1/* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright 2014-2015 PMC-Sierra, Inc. 4 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 13 * NON INFRINGEMENT. See the GNU General Public License for more details. 14 * 15 * Questions/Comments/Bugfixes to storagedev@pmcs.com 16 * 17 */ 18 19#include <linux/module.h> 20#include <linux/interrupt.h> 21#include <linux/types.h> 22#include <linux/pci.h> 23#include <linux/pci-aspm.h> 24#include <linux/kernel.h> 25#include <linux/slab.h> 26#include <linux/delay.h> 27#include <linux/fs.h> 28#include <linux/timer.h> 29#include <linux/init.h> 30#include <linux/spinlock.h> 31#include <linux/compat.h> 32#include <linux/blktrace_api.h> 33#include <linux/uaccess.h> 34#include <linux/io.h> 35#include <linux/dma-mapping.h> 36#include <linux/completion.h> 37#include <linux/moduleparam.h> 38#include <scsi/scsi.h> 39#include <scsi/scsi_cmnd.h> 40#include <scsi/scsi_device.h> 41#include <scsi/scsi_host.h> 42#include <scsi/scsi_tcq.h> 43#include <scsi/scsi_eh.h> 44#include <scsi/scsi_transport_sas.h> 45#include <scsi/scsi_dbg.h> 46#include <linux/cciss_ioctl.h> 47#include <linux/string.h> 48#include <linux/bitmap.h> 49#include <linux/atomic.h> 50#include <linux/jiffies.h> 51#include <linux/percpu-defs.h> 52#include <linux/percpu.h> 53#include <asm/unaligned.h> 54#include <asm/div64.h> 55#include "hpsa_cmd.h" 56#include "hpsa.h" 57 58/* 59 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' 60 * with an optional trailing '-' followed by a byte value (0-255). 61 */ 62#define HPSA_DRIVER_VERSION "3.4.14-0" 63#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" 64#define HPSA "hpsa" 65 66/* How long to wait for CISS doorbell communication */ 67#define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */ 68#define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */ 69#define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */ 70#define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */ 71#define MAX_IOCTL_CONFIG_WAIT 1000 72 73/*define how many times we will try a command because of bus resets */ 74#define MAX_CMD_RETRIES 3 75 76/* Embedded module documentation macros - see modules.h */ 77MODULE_AUTHOR("Hewlett-Packard Company"); 78MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ 79 HPSA_DRIVER_VERSION); 80MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); 81MODULE_VERSION(HPSA_DRIVER_VERSION); 82MODULE_LICENSE("GPL"); 83 84static int hpsa_allow_any; 85module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); 86MODULE_PARM_DESC(hpsa_allow_any, 87 "Allow hpsa driver to access unknown HP Smart Array hardware"); 88static int hpsa_simple_mode; 89module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); 90MODULE_PARM_DESC(hpsa_simple_mode, 91 "Use 'simple mode' rather than 'performant mode'"); 92 93/* define the PCI info for the cards we can control */ 94static const struct pci_device_id hpsa_pci_device_id[] = { 95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, 96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, 97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, 98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, 99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, 100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, 101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, 102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, 103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, 104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, 105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, 106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, 107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, 108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, 109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, 110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921}, 111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922}, 112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923}, 113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924}, 114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926}, 115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928}, 116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929}, 117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD}, 118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE}, 119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF}, 120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0}, 121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1}, 122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2}, 123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3}, 124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4}, 125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5}, 126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6}, 127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7}, 128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8}, 129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9}, 130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA}, 131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB}, 132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC}, 133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD}, 134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE}, 135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580}, 136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581}, 137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582}, 138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583}, 139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584}, 140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585}, 141 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076}, 142 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087}, 143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D}, 144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088}, 145 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f}, 146 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 147 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 148 {0,} 149}; 150 151MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); 152 153/* board_id = Subsystem Device ID & Vendor ID 154 * product = Marketing Name for the board 155 * access = Address of the struct of function pointers 156 */ 157static struct board_type products[] = { 158 {0x3241103C, "Smart Array P212", &SA5_access}, 159 {0x3243103C, "Smart Array P410", &SA5_access}, 160 {0x3245103C, "Smart Array P410i", &SA5_access}, 161 {0x3247103C, "Smart Array P411", &SA5_access}, 162 {0x3249103C, "Smart Array P812", &SA5_access}, 163 {0x324A103C, "Smart Array P712m", &SA5_access}, 164 {0x324B103C, "Smart Array P711m", &SA5_access}, 165 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */ 166 {0x3350103C, "Smart Array P222", &SA5_access}, 167 {0x3351103C, "Smart Array P420", &SA5_access}, 168 {0x3352103C, "Smart Array P421", &SA5_access}, 169 {0x3353103C, "Smart Array P822", &SA5_access}, 170 {0x3354103C, "Smart Array P420i", &SA5_access}, 171 {0x3355103C, "Smart Array P220i", &SA5_access}, 172 {0x3356103C, "Smart Array P721m", &SA5_access}, 173 {0x1921103C, "Smart Array P830i", &SA5_access}, 174 {0x1922103C, "Smart Array P430", &SA5_access}, 175 {0x1923103C, "Smart Array P431", &SA5_access}, 176 {0x1924103C, "Smart Array P830", &SA5_access}, 177 {0x1926103C, "Smart Array P731m", &SA5_access}, 178 {0x1928103C, "Smart Array P230i", &SA5_access}, 179 {0x1929103C, "Smart Array P530", &SA5_access}, 180 {0x21BD103C, "Smart Array P244br", &SA5_access}, 181 {0x21BE103C, "Smart Array P741m", &SA5_access}, 182 {0x21BF103C, "Smart HBA H240ar", &SA5_access}, 183 {0x21C0103C, "Smart Array P440ar", &SA5_access}, 184 {0x21C1103C, "Smart Array P840ar", &SA5_access}, 185 {0x21C2103C, "Smart Array P440", &SA5_access}, 186 {0x21C3103C, "Smart Array P441", &SA5_access}, 187 {0x21C4103C, "Smart Array", &SA5_access}, 188 {0x21C5103C, "Smart Array P841", &SA5_access}, 189 {0x21C6103C, "Smart HBA H244br", &SA5_access}, 190 {0x21C7103C, "Smart HBA H240", &SA5_access}, 191 {0x21C8103C, "Smart HBA H241", &SA5_access}, 192 {0x21C9103C, "Smart Array", &SA5_access}, 193 {0x21CA103C, "Smart Array P246br", &SA5_access}, 194 {0x21CB103C, "Smart Array P840", &SA5_access}, 195 {0x21CC103C, "Smart Array", &SA5_access}, 196 {0x21CD103C, "Smart Array", &SA5_access}, 197 {0x21CE103C, "Smart HBA", &SA5_access}, 198 {0x05809005, "SmartHBA-SA", &SA5_access}, 199 {0x05819005, "SmartHBA-SA 8i", &SA5_access}, 200 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access}, 201 {0x05839005, "SmartHBA-SA 8e", &SA5_access}, 202 {0x05849005, "SmartHBA-SA 16i", &SA5_access}, 203 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access}, 204 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access}, 205 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access}, 206 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access}, 207 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access}, 208 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access}, 209 {0xFFFF103C, "Unknown Smart Array", &SA5_access}, 210}; 211 212static struct scsi_transport_template *hpsa_sas_transport_template; 213static int hpsa_add_sas_host(struct ctlr_info *h); 214static void hpsa_delete_sas_host(struct ctlr_info *h); 215static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 216 struct hpsa_scsi_dev_t *device); 217static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device); 218static struct hpsa_scsi_dev_t 219 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 220 struct sas_rphy *rphy); 221 222#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) 223static const struct scsi_cmnd hpsa_cmd_busy; 224#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) 225static const struct scsi_cmnd hpsa_cmd_idle; 226static int number_of_controllers; 227 228static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); 229static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); 230static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg); 231 232#ifdef CONFIG_COMPAT 233static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, 234 void __user *arg); 235#endif 236 237static void cmd_free(struct ctlr_info *h, struct CommandList *c); 238static struct CommandList *cmd_alloc(struct ctlr_info *h); 239static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); 240static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 241 struct scsi_cmnd *scmd); 242static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 243 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 244 int cmd_type); 245static void hpsa_free_cmd_pool(struct ctlr_info *h); 246#define VPD_PAGE (1 << 8) 247#define HPSA_SIMPLE_ERROR_BITS 0x03 248 249static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); 250static void hpsa_scan_start(struct Scsi_Host *); 251static int hpsa_scan_finished(struct Scsi_Host *sh, 252 unsigned long elapsed_time); 253static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth); 254 255static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); 256static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd); 257static int hpsa_slave_alloc(struct scsi_device *sdev); 258static int hpsa_slave_configure(struct scsi_device *sdev); 259static void hpsa_slave_destroy(struct scsi_device *sdev); 260 261static void hpsa_update_scsi_devices(struct ctlr_info *h); 262static int check_for_unit_attention(struct ctlr_info *h, 263 struct CommandList *c); 264static void check_ioctl_unit_attention(struct ctlr_info *h, 265 struct CommandList *c); 266/* performant mode helper functions */ 267static void calc_bucket_map(int *bucket, int num_buckets, 268 int nsgs, int min_blocks, u32 *bucket_map); 269static void hpsa_free_performant_mode(struct ctlr_info *h); 270static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); 271static inline u32 next_command(struct ctlr_info *h, u8 q); 272static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 273 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 274 u64 *cfg_offset); 275static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 276 unsigned long *memory_bar); 277static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); 278static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 279 int wait_for_ready); 280static inline void finish_cmd(struct CommandList *c); 281static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h); 282#define BOARD_NOT_READY 0 283#define BOARD_READY 1 284static void hpsa_drain_accel_commands(struct ctlr_info *h); 285static void hpsa_flush_cache(struct ctlr_info *h); 286static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 287 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 288 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk); 289static void hpsa_command_resubmit_worker(struct work_struct *work); 290static u32 lockup_detected(struct ctlr_info *h); 291static int detect_controller_lockup(struct ctlr_info *h); 292static void hpsa_disable_rld_caching(struct ctlr_info *h); 293static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 294 struct ReportExtendedLUNdata *buf, int bufsize); 295static int hpsa_luns_changed(struct ctlr_info *h); 296 297static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) 298{ 299 unsigned long *priv = shost_priv(sdev->host); 300 return (struct ctlr_info *) *priv; 301} 302 303static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) 304{ 305 unsigned long *priv = shost_priv(sh); 306 return (struct ctlr_info *) *priv; 307} 308 309static inline bool hpsa_is_cmd_idle(struct CommandList *c) 310{ 311 return c->scsi_cmd == SCSI_CMD_IDLE; 312} 313 314static inline bool hpsa_is_pending_event(struct CommandList *c) 315{ 316 return c->abort_pending || c->reset_pending; 317} 318 319/* extract sense key, asc, and ascq from sense data. -1 means invalid. */ 320static void decode_sense_data(const u8 *sense_data, int sense_data_len, 321 u8 *sense_key, u8 *asc, u8 *ascq) 322{ 323 struct scsi_sense_hdr sshdr; 324 bool rc; 325 326 *sense_key = -1; 327 *asc = -1; 328 *ascq = -1; 329 330 if (sense_data_len < 1) 331 return; 332 333 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr); 334 if (rc) { 335 *sense_key = sshdr.sense_key; 336 *asc = sshdr.asc; 337 *ascq = sshdr.ascq; 338 } 339} 340 341static int check_for_unit_attention(struct ctlr_info *h, 342 struct CommandList *c) 343{ 344 u8 sense_key, asc, ascq; 345 int sense_len; 346 347 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 348 sense_len = sizeof(c->err_info->SenseInfo); 349 else 350 sense_len = c->err_info->SenseLen; 351 352 decode_sense_data(c->err_info->SenseInfo, sense_len, 353 &sense_key, &asc, &ascq); 354 if (sense_key != UNIT_ATTENTION || asc == 0xff) 355 return 0; 356 357 switch (asc) { 358 case STATE_CHANGED: 359 dev_warn(&h->pdev->dev, 360 "%s: a state change detected, command retried\n", 361 h->devname); 362 break; 363 case LUN_FAILED: 364 dev_warn(&h->pdev->dev, 365 "%s: LUN failure detected\n", h->devname); 366 break; 367 case REPORT_LUNS_CHANGED: 368 dev_warn(&h->pdev->dev, 369 "%s: report LUN data changed\n", h->devname); 370 /* 371 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external 372 * target (array) devices. 373 */ 374 break; 375 case POWER_OR_RESET: 376 dev_warn(&h->pdev->dev, 377 "%s: a power on or device reset detected\n", 378 h->devname); 379 break; 380 case UNIT_ATTENTION_CLEARED: 381 dev_warn(&h->pdev->dev, 382 "%s: unit attention cleared by another initiator\n", 383 h->devname); 384 break; 385 default: 386 dev_warn(&h->pdev->dev, 387 "%s: unknown unit attention detected\n", 388 h->devname); 389 break; 390 } 391 return 1; 392} 393 394static int check_for_busy(struct ctlr_info *h, struct CommandList *c) 395{ 396 if (c->err_info->CommandStatus != CMD_TARGET_STATUS || 397 (c->err_info->ScsiStatus != SAM_STAT_BUSY && 398 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL)) 399 return 0; 400 dev_warn(&h->pdev->dev, HPSA "device busy"); 401 return 1; 402} 403 404static u32 lockup_detected(struct ctlr_info *h); 405static ssize_t host_show_lockup_detected(struct device *dev, 406 struct device_attribute *attr, char *buf) 407{ 408 int ld; 409 struct ctlr_info *h; 410 struct Scsi_Host *shost = class_to_shost(dev); 411 412 h = shost_to_hba(shost); 413 ld = lockup_detected(h); 414 415 return sprintf(buf, "ld=%d\n", ld); 416} 417 418static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev, 419 struct device_attribute *attr, 420 const char *buf, size_t count) 421{ 422 int status, len; 423 struct ctlr_info *h; 424 struct Scsi_Host *shost = class_to_shost(dev); 425 char tmpbuf[10]; 426 427 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 428 return -EACCES; 429 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 430 strncpy(tmpbuf, buf, len); 431 tmpbuf[len] = '\0'; 432 if (sscanf(tmpbuf, "%d", &status) != 1) 433 return -EINVAL; 434 h = shost_to_hba(shost); 435 h->acciopath_status = !!status; 436 dev_warn(&h->pdev->dev, 437 "hpsa: HP SSD Smart Path %s via sysfs update.\n", 438 h->acciopath_status ? "enabled" : "disabled"); 439 return count; 440} 441 442static ssize_t host_store_raid_offload_debug(struct device *dev, 443 struct device_attribute *attr, 444 const char *buf, size_t count) 445{ 446 int debug_level, len; 447 struct ctlr_info *h; 448 struct Scsi_Host *shost = class_to_shost(dev); 449 char tmpbuf[10]; 450 451 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 452 return -EACCES; 453 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count; 454 strncpy(tmpbuf, buf, len); 455 tmpbuf[len] = '\0'; 456 if (sscanf(tmpbuf, "%d", &debug_level) != 1) 457 return -EINVAL; 458 if (debug_level < 0) 459 debug_level = 0; 460 h = shost_to_hba(shost); 461 h->raid_offload_debug = debug_level; 462 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n", 463 h->raid_offload_debug); 464 return count; 465} 466 467static ssize_t host_store_rescan(struct device *dev, 468 struct device_attribute *attr, 469 const char *buf, size_t count) 470{ 471 struct ctlr_info *h; 472 struct Scsi_Host *shost = class_to_shost(dev); 473 h = shost_to_hba(shost); 474 hpsa_scan_start(h->scsi_host); 475 return count; 476} 477 478static ssize_t host_show_firmware_revision(struct device *dev, 479 struct device_attribute *attr, char *buf) 480{ 481 struct ctlr_info *h; 482 struct Scsi_Host *shost = class_to_shost(dev); 483 unsigned char *fwrev; 484 485 h = shost_to_hba(shost); 486 if (!h->hba_inquiry_data) 487 return 0; 488 fwrev = &h->hba_inquiry_data[32]; 489 return snprintf(buf, 20, "%c%c%c%c\n", 490 fwrev[0], fwrev[1], fwrev[2], fwrev[3]); 491} 492 493static ssize_t host_show_commands_outstanding(struct device *dev, 494 struct device_attribute *attr, char *buf) 495{ 496 struct Scsi_Host *shost = class_to_shost(dev); 497 struct ctlr_info *h = shost_to_hba(shost); 498 499 return snprintf(buf, 20, "%d\n", 500 atomic_read(&h->commands_outstanding)); 501} 502 503static ssize_t host_show_transport_mode(struct device *dev, 504 struct device_attribute *attr, char *buf) 505{ 506 struct ctlr_info *h; 507 struct Scsi_Host *shost = class_to_shost(dev); 508 509 h = shost_to_hba(shost); 510 return snprintf(buf, 20, "%s\n", 511 h->transMethod & CFGTBL_Trans_Performant ? 512 "performant" : "simple"); 513} 514 515static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev, 516 struct device_attribute *attr, char *buf) 517{ 518 struct ctlr_info *h; 519 struct Scsi_Host *shost = class_to_shost(dev); 520 521 h = shost_to_hba(shost); 522 return snprintf(buf, 30, "HP SSD Smart Path %s\n", 523 (h->acciopath_status == 1) ? "enabled" : "disabled"); 524} 525 526/* List of controllers which cannot be hard reset on kexec with reset_devices */ 527static u32 unresettable_controller[] = { 528 0x324a103C, /* Smart Array P712m */ 529 0x324b103C, /* Smart Array P711m */ 530 0x3223103C, /* Smart Array P800 */ 531 0x3234103C, /* Smart Array P400 */ 532 0x3235103C, /* Smart Array P400i */ 533 0x3211103C, /* Smart Array E200i */ 534 0x3212103C, /* Smart Array E200 */ 535 0x3213103C, /* Smart Array E200i */ 536 0x3214103C, /* Smart Array E200i */ 537 0x3215103C, /* Smart Array E200i */ 538 0x3237103C, /* Smart Array E500 */ 539 0x323D103C, /* Smart Array P700m */ 540 0x40800E11, /* Smart Array 5i */ 541 0x409C0E11, /* Smart Array 6400 */ 542 0x409D0E11, /* Smart Array 6400 EM */ 543 0x40700E11, /* Smart Array 5300 */ 544 0x40820E11, /* Smart Array 532 */ 545 0x40830E11, /* Smart Array 5312 */ 546 0x409A0E11, /* Smart Array 641 */ 547 0x409B0E11, /* Smart Array 642 */ 548 0x40910E11, /* Smart Array 6i */ 549}; 550 551/* List of controllers which cannot even be soft reset */ 552static u32 soft_unresettable_controller[] = { 553 0x40800E11, /* Smart Array 5i */ 554 0x40700E11, /* Smart Array 5300 */ 555 0x40820E11, /* Smart Array 532 */ 556 0x40830E11, /* Smart Array 5312 */ 557 0x409A0E11, /* Smart Array 641 */ 558 0x409B0E11, /* Smart Array 642 */ 559 0x40910E11, /* Smart Array 6i */ 560 /* Exclude 640x boards. These are two pci devices in one slot 561 * which share a battery backed cache module. One controls the 562 * cache, the other accesses the cache through the one that controls 563 * it. If we reset the one controlling the cache, the other will 564 * likely not be happy. Just forbid resetting this conjoined mess. 565 * The 640x isn't really supported by hpsa anyway. 566 */ 567 0x409C0E11, /* Smart Array 6400 */ 568 0x409D0E11, /* Smart Array 6400 EM */ 569}; 570 571static u32 needs_abort_tags_swizzled[] = { 572 0x323D103C, /* Smart Array P700m */ 573 0x324a103C, /* Smart Array P712m */ 574 0x324b103C, /* SmartArray P711m */ 575}; 576 577static int board_id_in_array(u32 a[], int nelems, u32 board_id) 578{ 579 int i; 580 581 for (i = 0; i < nelems; i++) 582 if (a[i] == board_id) 583 return 1; 584 return 0; 585} 586 587static int ctlr_is_hard_resettable(u32 board_id) 588{ 589 return !board_id_in_array(unresettable_controller, 590 ARRAY_SIZE(unresettable_controller), board_id); 591} 592 593static int ctlr_is_soft_resettable(u32 board_id) 594{ 595 return !board_id_in_array(soft_unresettable_controller, 596 ARRAY_SIZE(soft_unresettable_controller), board_id); 597} 598 599static int ctlr_is_resettable(u32 board_id) 600{ 601 return ctlr_is_hard_resettable(board_id) || 602 ctlr_is_soft_resettable(board_id); 603} 604 605static int ctlr_needs_abort_tags_swizzled(u32 board_id) 606{ 607 return board_id_in_array(needs_abort_tags_swizzled, 608 ARRAY_SIZE(needs_abort_tags_swizzled), board_id); 609} 610 611static ssize_t host_show_resettable(struct device *dev, 612 struct device_attribute *attr, char *buf) 613{ 614 struct ctlr_info *h; 615 struct Scsi_Host *shost = class_to_shost(dev); 616 617 h = shost_to_hba(shost); 618 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); 619} 620 621static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) 622{ 623 return (scsi3addr[3] & 0xC0) == 0x40; 624} 625 626static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6", 627 "1(+0)ADM", "UNKNOWN", "PHYS DRV" 628}; 629#define HPSA_RAID_0 0 630#define HPSA_RAID_4 1 631#define HPSA_RAID_1 2 /* also used for RAID 10 */ 632#define HPSA_RAID_5 3 /* also used for RAID 50 */ 633#define HPSA_RAID_51 4 634#define HPSA_RAID_6 5 /* also used for RAID 60 */ 635#define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 636#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2) 637#define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1) 638 639static inline bool is_logical_device(struct hpsa_scsi_dev_t *device) 640{ 641 return !device->physical_device; 642} 643 644static ssize_t raid_level_show(struct device *dev, 645 struct device_attribute *attr, char *buf) 646{ 647 ssize_t l = 0; 648 unsigned char rlevel; 649 struct ctlr_info *h; 650 struct scsi_device *sdev; 651 struct hpsa_scsi_dev_t *hdev; 652 unsigned long flags; 653 654 sdev = to_scsi_device(dev); 655 h = sdev_to_hba(sdev); 656 spin_lock_irqsave(&h->lock, flags); 657 hdev = sdev->hostdata; 658 if (!hdev) { 659 spin_unlock_irqrestore(&h->lock, flags); 660 return -ENODEV; 661 } 662 663 /* Is this even a logical drive? */ 664 if (!is_logical_device(hdev)) { 665 spin_unlock_irqrestore(&h->lock, flags); 666 l = snprintf(buf, PAGE_SIZE, "N/A\n"); 667 return l; 668 } 669 670 rlevel = hdev->raid_level; 671 spin_unlock_irqrestore(&h->lock, flags); 672 if (rlevel > RAID_UNKNOWN) 673 rlevel = RAID_UNKNOWN; 674 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); 675 return l; 676} 677 678static ssize_t lunid_show(struct device *dev, 679 struct device_attribute *attr, char *buf) 680{ 681 struct ctlr_info *h; 682 struct scsi_device *sdev; 683 struct hpsa_scsi_dev_t *hdev; 684 unsigned long flags; 685 unsigned char lunid[8]; 686 687 sdev = to_scsi_device(dev); 688 h = sdev_to_hba(sdev); 689 spin_lock_irqsave(&h->lock, flags); 690 hdev = sdev->hostdata; 691 if (!hdev) { 692 spin_unlock_irqrestore(&h->lock, flags); 693 return -ENODEV; 694 } 695 memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); 696 spin_unlock_irqrestore(&h->lock, flags); 697 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 698 lunid[0], lunid[1], lunid[2], lunid[3], 699 lunid[4], lunid[5], lunid[6], lunid[7]); 700} 701 702static ssize_t unique_id_show(struct device *dev, 703 struct device_attribute *attr, char *buf) 704{ 705 struct ctlr_info *h; 706 struct scsi_device *sdev; 707 struct hpsa_scsi_dev_t *hdev; 708 unsigned long flags; 709 unsigned char sn[16]; 710 711 sdev = to_scsi_device(dev); 712 h = sdev_to_hba(sdev); 713 spin_lock_irqsave(&h->lock, flags); 714 hdev = sdev->hostdata; 715 if (!hdev) { 716 spin_unlock_irqrestore(&h->lock, flags); 717 return -ENODEV; 718 } 719 memcpy(sn, hdev->device_id, sizeof(sn)); 720 spin_unlock_irqrestore(&h->lock, flags); 721 return snprintf(buf, 16 * 2 + 2, 722 "%02X%02X%02X%02X%02X%02X%02X%02X" 723 "%02X%02X%02X%02X%02X%02X%02X%02X\n", 724 sn[0], sn[1], sn[2], sn[3], 725 sn[4], sn[5], sn[6], sn[7], 726 sn[8], sn[9], sn[10], sn[11], 727 sn[12], sn[13], sn[14], sn[15]); 728} 729 730static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, 731 struct device_attribute *attr, char *buf) 732{ 733 struct ctlr_info *h; 734 struct scsi_device *sdev; 735 struct hpsa_scsi_dev_t *hdev; 736 unsigned long flags; 737 int offload_enabled; 738 739 sdev = to_scsi_device(dev); 740 h = sdev_to_hba(sdev); 741 spin_lock_irqsave(&h->lock, flags); 742 hdev = sdev->hostdata; 743 if (!hdev) { 744 spin_unlock_irqrestore(&h->lock, flags); 745 return -ENODEV; 746 } 747 offload_enabled = hdev->offload_enabled; 748 spin_unlock_irqrestore(&h->lock, flags); 749 return snprintf(buf, 20, "%d\n", offload_enabled); 750} 751 752#define MAX_PATHS 8 753 754static ssize_t path_info_show(struct device *dev, 755 struct device_attribute *attr, char *buf) 756{ 757 struct ctlr_info *h; 758 struct scsi_device *sdev; 759 struct hpsa_scsi_dev_t *hdev; 760 unsigned long flags; 761 int i; 762 int output_len = 0; 763 u8 box; 764 u8 bay; 765 u8 path_map_index = 0; 766 char *active; 767 unsigned char phys_connector[2]; 768 769 sdev = to_scsi_device(dev); 770 h = sdev_to_hba(sdev); 771 spin_lock_irqsave(&h->devlock, flags); 772 hdev = sdev->hostdata; 773 if (!hdev) { 774 spin_unlock_irqrestore(&h->devlock, flags); 775 return -ENODEV; 776 } 777 778 bay = hdev->bay; 779 for (i = 0; i < MAX_PATHS; i++) { 780 path_map_index = 1<<i; 781 if (i == hdev->active_path_index) 782 active = "Active"; 783 else if (hdev->path_map & path_map_index) 784 active = "Inactive"; 785 else 786 continue; 787 788 output_len += scnprintf(buf + output_len, 789 PAGE_SIZE - output_len, 790 "[%d:%d:%d:%d] %20.20s ", 791 h->scsi_host->host_no, 792 hdev->bus, hdev->target, hdev->lun, 793 scsi_device_type(hdev->devtype)); 794 795 if (hdev->external || 796 hdev->devtype == TYPE_RAID || 797 is_logical_device(hdev)) { 798 output_len += snprintf(buf + output_len, 799 PAGE_SIZE - output_len, 800 "%s\n", active); 801 continue; 802 } 803 804 box = hdev->box[i]; 805 memcpy(&phys_connector, &hdev->phys_connector[i], 806 sizeof(phys_connector)); 807 if (phys_connector[0] < '0') 808 phys_connector[0] = '0'; 809 if (phys_connector[1] < '0') 810 phys_connector[1] = '0'; 811 if (hdev->phys_connector[i] > 0) 812 output_len += snprintf(buf + output_len, 813 PAGE_SIZE - output_len, 814 "PORT: %.2s ", 815 phys_connector); 816 if (hdev->devtype == TYPE_DISK && hdev->expose_device) { 817 if (box == 0 || box == 0xFF) { 818 output_len += snprintf(buf + output_len, 819 PAGE_SIZE - output_len, 820 "BAY: %hhu %s\n", 821 bay, active); 822 } else { 823 output_len += snprintf(buf + output_len, 824 PAGE_SIZE - output_len, 825 "BOX: %hhu BAY: %hhu %s\n", 826 box, bay, active); 827 } 828 } else if (box != 0 && box != 0xFF) { 829 output_len += snprintf(buf + output_len, 830 PAGE_SIZE - output_len, "BOX: %hhu %s\n", 831 box, active); 832 } else 833 output_len += snprintf(buf + output_len, 834 PAGE_SIZE - output_len, "%s\n", active); 835 } 836 837 spin_unlock_irqrestore(&h->devlock, flags); 838 return output_len; 839} 840 841static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); 842static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); 843static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); 844static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); 845static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, 846 host_show_hp_ssd_smart_path_enabled, NULL); 847static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL); 848static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH, 849 host_show_hp_ssd_smart_path_status, 850 host_store_hp_ssd_smart_path_status); 851static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL, 852 host_store_raid_offload_debug); 853static DEVICE_ATTR(firmware_revision, S_IRUGO, 854 host_show_firmware_revision, NULL); 855static DEVICE_ATTR(commands_outstanding, S_IRUGO, 856 host_show_commands_outstanding, NULL); 857static DEVICE_ATTR(transport_mode, S_IRUGO, 858 host_show_transport_mode, NULL); 859static DEVICE_ATTR(resettable, S_IRUGO, 860 host_show_resettable, NULL); 861static DEVICE_ATTR(lockup_detected, S_IRUGO, 862 host_show_lockup_detected, NULL); 863 864static struct device_attribute *hpsa_sdev_attrs[] = { 865 &dev_attr_raid_level, 866 &dev_attr_lunid, 867 &dev_attr_unique_id, 868 &dev_attr_hp_ssd_smart_path_enabled, 869 &dev_attr_path_info, 870 NULL, 871}; 872 873static struct device_attribute *hpsa_shost_attrs[] = { 874 &dev_attr_rescan, 875 &dev_attr_firmware_revision, 876 &dev_attr_commands_outstanding, 877 &dev_attr_transport_mode, 878 &dev_attr_resettable, 879 &dev_attr_hp_ssd_smart_path_status, 880 &dev_attr_raid_offload_debug, 881 &dev_attr_lockup_detected, 882 NULL, 883}; 884 885#define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \ 886 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS) 887 888static struct scsi_host_template hpsa_driver_template = { 889 .module = THIS_MODULE, 890 .name = HPSA, 891 .proc_name = HPSA, 892 .queuecommand = hpsa_scsi_queue_command, 893 .scan_start = hpsa_scan_start, 894 .scan_finished = hpsa_scan_finished, 895 .change_queue_depth = hpsa_change_queue_depth, 896 .this_id = -1, 897 .use_clustering = ENABLE_CLUSTERING, 898 .eh_abort_handler = hpsa_eh_abort_handler, 899 .eh_device_reset_handler = hpsa_eh_device_reset_handler, 900 .ioctl = hpsa_ioctl, 901 .slave_alloc = hpsa_slave_alloc, 902 .slave_configure = hpsa_slave_configure, 903 .slave_destroy = hpsa_slave_destroy, 904#ifdef CONFIG_COMPAT 905 .compat_ioctl = hpsa_compat_ioctl, 906#endif 907 .sdev_attrs = hpsa_sdev_attrs, 908 .shost_attrs = hpsa_shost_attrs, 909 .max_sectors = 8192, 910 .no_write_same = 1, 911}; 912 913static inline u32 next_command(struct ctlr_info *h, u8 q) 914{ 915 u32 a; 916 struct reply_queue_buffer *rq = &h->reply_queue[q]; 917 918 if (h->transMethod & CFGTBL_Trans_io_accel1) 919 return h->access.command_completed(h, q); 920 921 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) 922 return h->access.command_completed(h, q); 923 924 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { 925 a = rq->head[rq->current_entry]; 926 rq->current_entry++; 927 atomic_dec(&h->commands_outstanding); 928 } else { 929 a = FIFO_EMPTY; 930 } 931 /* Check for wraparound */ 932 if (rq->current_entry == h->max_commands) { 933 rq->current_entry = 0; 934 rq->wraparound ^= 1; 935 } 936 return a; 937} 938 939/* 940 * There are some special bits in the bus address of the 941 * command that we have to set for the controller to know 942 * how to process the command: 943 * 944 * Normal performant mode: 945 * bit 0: 1 means performant mode, 0 means simple mode. 946 * bits 1-3 = block fetch table entry 947 * bits 4-6 = command type (== 0) 948 * 949 * ioaccel1 mode: 950 * bit 0 = "performant mode" bit. 951 * bits 1-3 = block fetch table entry 952 * bits 4-6 = command type (== 110) 953 * (command type is needed because ioaccel1 mode 954 * commands are submitted through the same register as normal 955 * mode commands, so this is how the controller knows whether 956 * the command is normal mode or ioaccel1 mode.) 957 * 958 * ioaccel2 mode: 959 * bit 0 = "performant mode" bit. 960 * bits 1-4 = block fetch table entry (note extra bit) 961 * bits 4-6 = not needed, because ioaccel2 mode has 962 * a separate special register for submitting commands. 963 */ 964 965/* 966 * set_performant_mode: Modify the tag for cciss performant 967 * set bit 0 for pull model, bits 3-1 for block fetch 968 * register number 969 */ 970#define DEFAULT_REPLY_QUEUE (-1) 971static void set_performant_mode(struct ctlr_info *h, struct CommandList *c, 972 int reply_queue) 973{ 974 if (likely(h->transMethod & CFGTBL_Trans_Performant)) { 975 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); 976 if (unlikely(!h->msix_vector)) 977 return; 978 if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) 979 c->Header.ReplyQueue = 980 raw_smp_processor_id() % h->nreply_queues; 981 else 982 c->Header.ReplyQueue = reply_queue % h->nreply_queues; 983 } 984} 985 986static void set_ioaccel1_performant_mode(struct ctlr_info *h, 987 struct CommandList *c, 988 int reply_queue) 989{ 990 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 991 992 /* 993 * Tell the controller to post the reply to the queue for this 994 * processor. This seems to give the best I/O throughput. 995 */ 996 if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) 997 cp->ReplyQueue = smp_processor_id() % h->nreply_queues; 998 else 999 cp->ReplyQueue = reply_queue % h->nreply_queues; 1000 /* 1001 * Set the bits in the address sent down to include: 1002 * - performant mode bit (bit 0) 1003 * - pull count (bits 1-3) 1004 * - command type (bits 4-6) 1005 */ 1006 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) | 1007 IOACCEL1_BUSADDR_CMDTYPE; 1008} 1009 1010static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, 1011 struct CommandList *c, 1012 int reply_queue) 1013{ 1014 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *) 1015 &h->ioaccel2_cmd_pool[c->cmdindex]; 1016 1017 /* Tell the controller to post the reply to the queue for this 1018 * processor. This seems to give the best I/O throughput. 1019 */ 1020 if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) 1021 cp->reply_queue = smp_processor_id() % h->nreply_queues; 1022 else 1023 cp->reply_queue = reply_queue % h->nreply_queues; 1024 /* Set the bits in the address sent down to include: 1025 * - performant mode bit not used in ioaccel mode 2 1026 * - pull count (bits 0-3) 1027 * - command type isn't needed for ioaccel2 1028 */ 1029 c->busaddr |= h->ioaccel2_blockFetchTable[0]; 1030} 1031 1032static void set_ioaccel2_performant_mode(struct ctlr_info *h, 1033 struct CommandList *c, 1034 int reply_queue) 1035{ 1036 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 1037 1038 /* 1039 * Tell the controller to post the reply to the queue for this 1040 * processor. This seems to give the best I/O throughput. 1041 */ 1042 if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) 1043 cp->reply_queue = smp_processor_id() % h->nreply_queues; 1044 else 1045 cp->reply_queue = reply_queue % h->nreply_queues; 1046 /* 1047 * Set the bits in the address sent down to include: 1048 * - performant mode bit not used in ioaccel mode 2 1049 * - pull count (bits 0-3) 1050 * - command type isn't needed for ioaccel2 1051 */ 1052 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]); 1053} 1054 1055static int is_firmware_flash_cmd(u8 *cdb) 1056{ 1057 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE; 1058} 1059 1060/* 1061 * During firmware flash, the heartbeat register may not update as frequently 1062 * as it should. So we dial down lockup detection during firmware flash. and 1063 * dial it back up when firmware flash completes. 1064 */ 1065#define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ) 1066#define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ) 1067static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h, 1068 struct CommandList *c) 1069{ 1070 if (!is_firmware_flash_cmd(c->Request.CDB)) 1071 return; 1072 atomic_inc(&h->firmware_flash_in_progress); 1073 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH; 1074} 1075 1076static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h, 1077 struct CommandList *c) 1078{ 1079 if (is_firmware_flash_cmd(c->Request.CDB) && 1080 atomic_dec_and_test(&h->firmware_flash_in_progress)) 1081 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 1082} 1083 1084static void __enqueue_cmd_and_start_io(struct ctlr_info *h, 1085 struct CommandList *c, int reply_queue) 1086{ 1087 dial_down_lockup_detection_during_fw_flash(h, c); 1088 atomic_inc(&h->commands_outstanding); 1089 switch (c->cmd_type) { 1090 case CMD_IOACCEL1: 1091 set_ioaccel1_performant_mode(h, c, reply_queue); 1092 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 1093 break; 1094 case CMD_IOACCEL2: 1095 set_ioaccel2_performant_mode(h, c, reply_queue); 1096 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1097 break; 1098 case IOACCEL2_TMF: 1099 set_ioaccel2_tmf_performant_mode(h, c, reply_queue); 1100 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); 1101 break; 1102 default: 1103 set_performant_mode(h, c, reply_queue); 1104 h->access.submit_command(h, c); 1105 } 1106} 1107 1108static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c) 1109{ 1110 if (unlikely(hpsa_is_pending_event(c))) 1111 return finish_cmd(c); 1112 1113 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE); 1114} 1115 1116static inline int is_hba_lunid(unsigned char scsi3addr[]) 1117{ 1118 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; 1119} 1120 1121static inline int is_scsi_rev_5(struct ctlr_info *h) 1122{ 1123 if (!h->hba_inquiry_data) 1124 return 0; 1125 if ((h->hba_inquiry_data[2] & 0x07) == 5) 1126 return 1; 1127 return 0; 1128} 1129 1130static int hpsa_find_target_lun(struct ctlr_info *h, 1131 unsigned char scsi3addr[], int bus, int *target, int *lun) 1132{ 1133 /* finds an unused bus, target, lun for a new physical device 1134 * assumes h->devlock is held 1135 */ 1136 int i, found = 0; 1137 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES); 1138 1139 bitmap_zero(lun_taken, HPSA_MAX_DEVICES); 1140 1141 for (i = 0; i < h->ndevices; i++) { 1142 if (h->dev[i]->bus == bus && h->dev[i]->target != -1) 1143 __set_bit(h->dev[i]->target, lun_taken); 1144 } 1145 1146 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES); 1147 if (i < HPSA_MAX_DEVICES) { 1148 /* *bus = 1; */ 1149 *target = i; 1150 *lun = 0; 1151 found = 1; 1152 } 1153 return !found; 1154} 1155 1156static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, 1157 struct hpsa_scsi_dev_t *dev, char *description) 1158{ 1159#define LABEL_SIZE 25 1160 char label[LABEL_SIZE]; 1161 1162 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL) 1163 return; 1164 1165 switch (dev->devtype) { 1166 case TYPE_RAID: 1167 snprintf(label, LABEL_SIZE, "controller"); 1168 break; 1169 case TYPE_ENCLOSURE: 1170 snprintf(label, LABEL_SIZE, "enclosure"); 1171 break; 1172 case TYPE_DISK: 1173 if (dev->external) 1174 snprintf(label, LABEL_SIZE, "external"); 1175 else if (!is_logical_dev_addr_mode(dev->scsi3addr)) 1176 snprintf(label, LABEL_SIZE, "%s", 1177 raid_label[PHYSICAL_DRIVE]); 1178 else 1179 snprintf(label, LABEL_SIZE, "RAID-%s", 1180 dev->raid_level > RAID_UNKNOWN ? "?" : 1181 raid_label[dev->raid_level]); 1182 break; 1183 case TYPE_ROM: 1184 snprintf(label, LABEL_SIZE, "rom"); 1185 break; 1186 case TYPE_TAPE: 1187 snprintf(label, LABEL_SIZE, "tape"); 1188 break; 1189 case TYPE_MEDIUM_CHANGER: 1190 snprintf(label, LABEL_SIZE, "changer"); 1191 break; 1192 default: 1193 snprintf(label, LABEL_SIZE, "UNKNOWN"); 1194 break; 1195 } 1196 1197 dev_printk(level, &h->pdev->dev, 1198 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n", 1199 h->scsi_host->host_no, dev->bus, dev->target, dev->lun, 1200 description, 1201 scsi_device_type(dev->devtype), 1202 dev->vendor, 1203 dev->model, 1204 label, 1205 dev->offload_config ? '+' : '-', 1206 dev->offload_enabled ? '+' : '-', 1207 dev->expose_device); 1208} 1209 1210/* Add an entry into h->dev[] array. */ 1211static int hpsa_scsi_add_entry(struct ctlr_info *h, 1212 struct hpsa_scsi_dev_t *device, 1213 struct hpsa_scsi_dev_t *added[], int *nadded) 1214{ 1215 /* assumes h->devlock is held */ 1216 int n = h->ndevices; 1217 int i; 1218 unsigned char addr1[8], addr2[8]; 1219 struct hpsa_scsi_dev_t *sd; 1220 1221 if (n >= HPSA_MAX_DEVICES) { 1222 dev_err(&h->pdev->dev, "too many devices, some will be " 1223 "inaccessible.\n"); 1224 return -1; 1225 } 1226 1227 /* physical devices do not have lun or target assigned until now. */ 1228 if (device->lun != -1) 1229 /* Logical device, lun is already assigned. */ 1230 goto lun_assigned; 1231 1232 /* If this device a non-zero lun of a multi-lun device 1233 * byte 4 of the 8-byte LUN addr will contain the logical 1234 * unit no, zero otherwise. 1235 */ 1236 if (device->scsi3addr[4] == 0) { 1237 /* This is not a non-zero lun of a multi-lun device */ 1238 if (hpsa_find_target_lun(h, device->scsi3addr, 1239 device->bus, &device->target, &device->lun) != 0) 1240 return -1; 1241 goto lun_assigned; 1242 } 1243 1244 /* This is a non-zero lun of a multi-lun device. 1245 * Search through our list and find the device which 1246 * has the same 8 byte LUN address, excepting byte 4 and 5. 1247 * Assign the same bus and target for this new LUN. 1248 * Use the logical unit number from the firmware. 1249 */ 1250 memcpy(addr1, device->scsi3addr, 8); 1251 addr1[4] = 0; 1252 addr1[5] = 0; 1253 for (i = 0; i < n; i++) { 1254 sd = h->dev[i]; 1255 memcpy(addr2, sd->scsi3addr, 8); 1256 addr2[4] = 0; 1257 addr2[5] = 0; 1258 /* differ only in byte 4 and 5? */ 1259 if (memcmp(addr1, addr2, 8) == 0) { 1260 device->bus = sd->bus; 1261 device->target = sd->target; 1262 device->lun = device->scsi3addr[4]; 1263 break; 1264 } 1265 } 1266 if (device->lun == -1) { 1267 dev_warn(&h->pdev->dev, "physical device with no LUN=0," 1268 " suspect firmware bug or unsupported hardware " 1269 "configuration.\n"); 1270 return -1; 1271 } 1272 1273lun_assigned: 1274 1275 h->dev[n] = device; 1276 h->ndevices++; 1277 added[*nadded] = device; 1278 (*nadded)++; 1279 hpsa_show_dev_msg(KERN_INFO, h, device, 1280 device->expose_device ? "added" : "masked"); 1281 device->offload_to_be_enabled = device->offload_enabled; 1282 device->offload_enabled = 0; 1283 return 0; 1284} 1285 1286/* Update an entry in h->dev[] array. */ 1287static void hpsa_scsi_update_entry(struct ctlr_info *h, 1288 int entry, struct hpsa_scsi_dev_t *new_entry) 1289{ 1290 int offload_enabled; 1291 /* assumes h->devlock is held */ 1292 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1293 1294 /* Raid level changed. */ 1295 h->dev[entry]->raid_level = new_entry->raid_level; 1296 1297 /* Raid offload parameters changed. Careful about the ordering. */ 1298 if (new_entry->offload_config && new_entry->offload_enabled) { 1299 /* 1300 * if drive is newly offload_enabled, we want to copy the 1301 * raid map data first. If previously offload_enabled and 1302 * offload_config were set, raid map data had better be 1303 * the same as it was before. if raid map data is changed 1304 * then it had better be the case that 1305 * h->dev[entry]->offload_enabled is currently 0. 1306 */ 1307 h->dev[entry]->raid_map = new_entry->raid_map; 1308 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1309 } 1310 if (new_entry->hba_ioaccel_enabled) { 1311 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; 1312 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */ 1313 } 1314 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled; 1315 h->dev[entry]->offload_config = new_entry->offload_config; 1316 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror; 1317 h->dev[entry]->queue_depth = new_entry->queue_depth; 1318 1319 /* 1320 * We can turn off ioaccel offload now, but need to delay turning 1321 * it on until we can update h->dev[entry]->phys_disk[], but we 1322 * can't do that until all the devices are updated. 1323 */ 1324 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled; 1325 if (!new_entry->offload_enabled) 1326 h->dev[entry]->offload_enabled = 0; 1327 1328 offload_enabled = h->dev[entry]->offload_enabled; 1329 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled; 1330 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated"); 1331 h->dev[entry]->offload_enabled = offload_enabled; 1332} 1333 1334/* Replace an entry from h->dev[] array. */ 1335static void hpsa_scsi_replace_entry(struct ctlr_info *h, 1336 int entry, struct hpsa_scsi_dev_t *new_entry, 1337 struct hpsa_scsi_dev_t *added[], int *nadded, 1338 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1339{ 1340 /* assumes h->devlock is held */ 1341 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1342 removed[*nremoved] = h->dev[entry]; 1343 (*nremoved)++; 1344 1345 /* 1346 * New physical devices won't have target/lun assigned yet 1347 * so we need to preserve the values in the slot we are replacing. 1348 */ 1349 if (new_entry->target == -1) { 1350 new_entry->target = h->dev[entry]->target; 1351 new_entry->lun = h->dev[entry]->lun; 1352 } 1353 1354 h->dev[entry] = new_entry; 1355 added[*nadded] = new_entry; 1356 (*nadded)++; 1357 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced"); 1358 new_entry->offload_to_be_enabled = new_entry->offload_enabled; 1359 new_entry->offload_enabled = 0; 1360} 1361 1362/* Remove an entry from h->dev[] array. */ 1363static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry, 1364 struct hpsa_scsi_dev_t *removed[], int *nremoved) 1365{ 1366 /* assumes h->devlock is held */ 1367 int i; 1368 struct hpsa_scsi_dev_t *sd; 1369 1370 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); 1371 1372 sd = h->dev[entry]; 1373 removed[*nremoved] = h->dev[entry]; 1374 (*nremoved)++; 1375 1376 for (i = entry; i < h->ndevices-1; i++) 1377 h->dev[i] = h->dev[i+1]; 1378 h->ndevices--; 1379 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed"); 1380} 1381 1382#define SCSI3ADDR_EQ(a, b) ( \ 1383 (a)[7] == (b)[7] && \ 1384 (a)[6] == (b)[6] && \ 1385 (a)[5] == (b)[5] && \ 1386 (a)[4] == (b)[4] && \ 1387 (a)[3] == (b)[3] && \ 1388 (a)[2] == (b)[2] && \ 1389 (a)[1] == (b)[1] && \ 1390 (a)[0] == (b)[0]) 1391 1392static void fixup_botched_add(struct ctlr_info *h, 1393 struct hpsa_scsi_dev_t *added) 1394{ 1395 /* called when scsi_add_device fails in order to re-adjust 1396 * h->dev[] to match the mid layer's view. 1397 */ 1398 unsigned long flags; 1399 int i, j; 1400 1401 spin_lock_irqsave(&h->lock, flags); 1402 for (i = 0; i < h->ndevices; i++) { 1403 if (h->dev[i] == added) { 1404 for (j = i; j < h->ndevices-1; j++) 1405 h->dev[j] = h->dev[j+1]; 1406 h->ndevices--; 1407 break; 1408 } 1409 } 1410 spin_unlock_irqrestore(&h->lock, flags); 1411 kfree(added); 1412} 1413 1414static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, 1415 struct hpsa_scsi_dev_t *dev2) 1416{ 1417 /* we compare everything except lun and target as these 1418 * are not yet assigned. Compare parts likely 1419 * to differ first 1420 */ 1421 if (memcmp(dev1->scsi3addr, dev2->scsi3addr, 1422 sizeof(dev1->scsi3addr)) != 0) 1423 return 0; 1424 if (memcmp(dev1->device_id, dev2->device_id, 1425 sizeof(dev1->device_id)) != 0) 1426 return 0; 1427 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) 1428 return 0; 1429 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) 1430 return 0; 1431 if (dev1->devtype != dev2->devtype) 1432 return 0; 1433 if (dev1->bus != dev2->bus) 1434 return 0; 1435 return 1; 1436} 1437 1438static inline int device_updated(struct hpsa_scsi_dev_t *dev1, 1439 struct hpsa_scsi_dev_t *dev2) 1440{ 1441 /* Device attributes that can change, but don't mean 1442 * that the device is a different device, nor that the OS 1443 * needs to be told anything about the change. 1444 */ 1445 if (dev1->raid_level != dev2->raid_level) 1446 return 1; 1447 if (dev1->offload_config != dev2->offload_config) 1448 return 1; 1449 if (dev1->offload_enabled != dev2->offload_enabled) 1450 return 1; 1451 if (!is_logical_dev_addr_mode(dev1->scsi3addr)) 1452 if (dev1->queue_depth != dev2->queue_depth) 1453 return 1; 1454 return 0; 1455} 1456 1457/* Find needle in haystack. If exact match found, return DEVICE_SAME, 1458 * and return needle location in *index. If scsi3addr matches, but not 1459 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle 1460 * location in *index. 1461 * In the case of a minor device attribute change, such as RAID level, just 1462 * return DEVICE_UPDATED, along with the updated device's location in index. 1463 * If needle not found, return DEVICE_NOT_FOUND. 1464 */ 1465static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, 1466 struct hpsa_scsi_dev_t *haystack[], int haystack_size, 1467 int *index) 1468{ 1469 int i; 1470#define DEVICE_NOT_FOUND 0 1471#define DEVICE_CHANGED 1 1472#define DEVICE_SAME 2 1473#define DEVICE_UPDATED 3 1474 if (needle == NULL) 1475 return DEVICE_NOT_FOUND; 1476 1477 for (i = 0; i < haystack_size; i++) { 1478 if (haystack[i] == NULL) /* previously removed. */ 1479 continue; 1480 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { 1481 *index = i; 1482 if (device_is_the_same(needle, haystack[i])) { 1483 if (device_updated(needle, haystack[i])) 1484 return DEVICE_UPDATED; 1485 return DEVICE_SAME; 1486 } else { 1487 /* Keep offline devices offline */ 1488 if (needle->volume_offline) 1489 return DEVICE_NOT_FOUND; 1490 return DEVICE_CHANGED; 1491 } 1492 } 1493 } 1494 *index = -1; 1495 return DEVICE_NOT_FOUND; 1496} 1497 1498static void hpsa_monitor_offline_device(struct ctlr_info *h, 1499 unsigned char scsi3addr[]) 1500{ 1501 struct offline_device_entry *device; 1502 unsigned long flags; 1503 1504 /* Check to see if device is already on the list */ 1505 spin_lock_irqsave(&h->offline_device_lock, flags); 1506 list_for_each_entry(device, &h->offline_device_list, offline_list) { 1507 if (memcmp(device->scsi3addr, scsi3addr, 1508 sizeof(device->scsi3addr)) == 0) { 1509 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1510 return; 1511 } 1512 } 1513 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1514 1515 /* Device is not on the list, add it. */ 1516 device = kmalloc(sizeof(*device), GFP_KERNEL); 1517 if (!device) { 1518 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__); 1519 return; 1520 } 1521 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 1522 spin_lock_irqsave(&h->offline_device_lock, flags); 1523 list_add_tail(&device->offline_list, &h->offline_device_list); 1524 spin_unlock_irqrestore(&h->offline_device_lock, flags); 1525} 1526 1527/* Print a message explaining various offline volume states */ 1528static void hpsa_show_volume_status(struct ctlr_info *h, 1529 struct hpsa_scsi_dev_t *sd) 1530{ 1531 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED) 1532 dev_info(&h->pdev->dev, 1533 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n", 1534 h->scsi_host->host_no, 1535 sd->bus, sd->target, sd->lun); 1536 switch (sd->volume_offline) { 1537 case HPSA_LV_OK: 1538 break; 1539 case HPSA_LV_UNDERGOING_ERASE: 1540 dev_info(&h->pdev->dev, 1541 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n", 1542 h->scsi_host->host_no, 1543 sd->bus, sd->target, sd->lun); 1544 break; 1545 case HPSA_LV_NOT_AVAILABLE: 1546 dev_info(&h->pdev->dev, 1547 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n", 1548 h->scsi_host->host_no, 1549 sd->bus, sd->target, sd->lun); 1550 break; 1551 case HPSA_LV_UNDERGOING_RPI: 1552 dev_info(&h->pdev->dev, 1553 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n", 1554 h->scsi_host->host_no, 1555 sd->bus, sd->target, sd->lun); 1556 break; 1557 case HPSA_LV_PENDING_RPI: 1558 dev_info(&h->pdev->dev, 1559 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n", 1560 h->scsi_host->host_no, 1561 sd->bus, sd->target, sd->lun); 1562 break; 1563 case HPSA_LV_ENCRYPTED_NO_KEY: 1564 dev_info(&h->pdev->dev, 1565 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n", 1566 h->scsi_host->host_no, 1567 sd->bus, sd->target, sd->lun); 1568 break; 1569 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 1570 dev_info(&h->pdev->dev, 1571 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n", 1572 h->scsi_host->host_no, 1573 sd->bus, sd->target, sd->lun); 1574 break; 1575 case HPSA_LV_UNDERGOING_ENCRYPTION: 1576 dev_info(&h->pdev->dev, 1577 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n", 1578 h->scsi_host->host_no, 1579 sd->bus, sd->target, sd->lun); 1580 break; 1581 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 1582 dev_info(&h->pdev->dev, 1583 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n", 1584 h->scsi_host->host_no, 1585 sd->bus, sd->target, sd->lun); 1586 break; 1587 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1588 dev_info(&h->pdev->dev, 1589 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n", 1590 h->scsi_host->host_no, 1591 sd->bus, sd->target, sd->lun); 1592 break; 1593 case HPSA_LV_PENDING_ENCRYPTION: 1594 dev_info(&h->pdev->dev, 1595 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n", 1596 h->scsi_host->host_no, 1597 sd->bus, sd->target, sd->lun); 1598 break; 1599 case HPSA_LV_PENDING_ENCRYPTION_REKEYING: 1600 dev_info(&h->pdev->dev, 1601 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n", 1602 h->scsi_host->host_no, 1603 sd->bus, sd->target, sd->lun); 1604 break; 1605 } 1606} 1607 1608/* 1609 * Figure the list of physical drive pointers for a logical drive with 1610 * raid offload configured. 1611 */ 1612static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, 1613 struct hpsa_scsi_dev_t *dev[], int ndevices, 1614 struct hpsa_scsi_dev_t *logical_drive) 1615{ 1616 struct raid_map_data *map = &logical_drive->raid_map; 1617 struct raid_map_disk_data *dd = &map->data[0]; 1618 int i, j; 1619 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 1620 le16_to_cpu(map->metadata_disks_per_row); 1621 int nraid_map_entries = le16_to_cpu(map->row_cnt) * 1622 le16_to_cpu(map->layout_map_count) * 1623 total_disks_per_row; 1624 int nphys_disk = le16_to_cpu(map->layout_map_count) * 1625 total_disks_per_row; 1626 int qdepth; 1627 1628 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES) 1629 nraid_map_entries = RAID_MAP_MAX_ENTRIES; 1630 1631 logical_drive->nphysical_disks = nraid_map_entries; 1632 1633 qdepth = 0; 1634 for (i = 0; i < nraid_map_entries; i++) { 1635 logical_drive->phys_disk[i] = NULL; 1636 if (!logical_drive->offload_config) 1637 continue; 1638 for (j = 0; j < ndevices; j++) { 1639 if (dev[j] == NULL) 1640 continue; 1641 if (dev[j]->devtype != TYPE_DISK) 1642 continue; 1643 if (is_logical_device(dev[j])) 1644 continue; 1645 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle) 1646 continue; 1647 1648 logical_drive->phys_disk[i] = dev[j]; 1649 if (i < nphys_disk) 1650 qdepth = min(h->nr_cmds, qdepth + 1651 logical_drive->phys_disk[i]->queue_depth); 1652 break; 1653 } 1654 1655 /* 1656 * This can happen if a physical drive is removed and 1657 * the logical drive is degraded. In that case, the RAID 1658 * map data will refer to a physical disk which isn't actually 1659 * present. And in that case offload_enabled should already 1660 * be 0, but we'll turn it off here just in case 1661 */ 1662 if (!logical_drive->phys_disk[i]) { 1663 logical_drive->offload_enabled = 0; 1664 logical_drive->offload_to_be_enabled = 0; 1665 logical_drive->queue_depth = 8; 1666 } 1667 } 1668 if (nraid_map_entries) 1669 /* 1670 * This is correct for reads, too high for full stripe writes, 1671 * way too high for partial stripe writes 1672 */ 1673 logical_drive->queue_depth = qdepth; 1674 else 1675 logical_drive->queue_depth = h->nr_cmds; 1676} 1677 1678static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h, 1679 struct hpsa_scsi_dev_t *dev[], int ndevices) 1680{ 1681 int i; 1682 1683 for (i = 0; i < ndevices; i++) { 1684 if (dev[i] == NULL) 1685 continue; 1686 if (dev[i]->devtype != TYPE_DISK) 1687 continue; 1688 if (!is_logical_device(dev[i])) 1689 continue; 1690 1691 /* 1692 * If offload is currently enabled, the RAID map and 1693 * phys_disk[] assignment *better* not be changing 1694 * and since it isn't changing, we do not need to 1695 * update it. 1696 */ 1697 if (dev[i]->offload_enabled) 1698 continue; 1699 1700 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]); 1701 } 1702} 1703 1704static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) 1705{ 1706 int rc = 0; 1707 1708 if (!h->scsi_host) 1709 return 1; 1710 1711 if (is_logical_device(device)) /* RAID */ 1712 rc = scsi_add_device(h->scsi_host, device->bus, 1713 device->target, device->lun); 1714 else /* HBA */ 1715 rc = hpsa_add_sas_device(h->sas_host, device); 1716 1717 return rc; 1718} 1719 1720static void hpsa_remove_device(struct ctlr_info *h, 1721 struct hpsa_scsi_dev_t *device) 1722{ 1723 struct scsi_device *sdev = NULL; 1724 1725 if (!h->scsi_host) 1726 return; 1727 1728 if (is_logical_device(device)) { /* RAID */ 1729 sdev = scsi_device_lookup(h->scsi_host, device->bus, 1730 device->target, device->lun); 1731 if (sdev) { 1732 scsi_remove_device(sdev); 1733 scsi_device_put(sdev); 1734 } else { 1735 /* 1736 * We don't expect to get here. Future commands 1737 * to this device will get a selection timeout as 1738 * if the device were gone. 1739 */ 1740 hpsa_show_dev_msg(KERN_WARNING, h, device, 1741 "didn't find device for removal."); 1742 } 1743 } else /* HBA */ 1744 hpsa_remove_sas_device(device); 1745} 1746 1747static void adjust_hpsa_scsi_table(struct ctlr_info *h, 1748 struct hpsa_scsi_dev_t *sd[], int nsds) 1749{ 1750 /* sd contains scsi3 addresses and devtypes, and inquiry 1751 * data. This function takes what's in sd to be the current 1752 * reality and updates h->dev[] to reflect that reality. 1753 */ 1754 int i, entry, device_change, changes = 0; 1755 struct hpsa_scsi_dev_t *csd; 1756 unsigned long flags; 1757 struct hpsa_scsi_dev_t **added, **removed; 1758 int nadded, nremoved; 1759 1760 /* 1761 * A reset can cause a device status to change 1762 * re-schedule the scan to see what happened. 1763 */ 1764 if (h->reset_in_progress) { 1765 h->drv_req_rescan = 1; 1766 return; 1767 } 1768 1769 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); 1770 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); 1771 1772 if (!added || !removed) { 1773 dev_warn(&h->pdev->dev, "out of memory in " 1774 "adjust_hpsa_scsi_table\n"); 1775 goto free_and_out; 1776 } 1777 1778 spin_lock_irqsave(&h->devlock, flags); 1779 1780 /* find any devices in h->dev[] that are not in 1781 * sd[] and remove them from h->dev[], and for any 1782 * devices which have changed, remove the old device 1783 * info and add the new device info. 1784 * If minor device attributes change, just update 1785 * the existing device structure. 1786 */ 1787 i = 0; 1788 nremoved = 0; 1789 nadded = 0; 1790 while (i < h->ndevices) { 1791 csd = h->dev[i]; 1792 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); 1793 if (device_change == DEVICE_NOT_FOUND) { 1794 changes++; 1795 hpsa_scsi_remove_entry(h, i, removed, &nremoved); 1796 continue; /* remove ^^^, hence i not incremented */ 1797 } else if (device_change == DEVICE_CHANGED) { 1798 changes++; 1799 hpsa_scsi_replace_entry(h, i, sd[entry], 1800 added, &nadded, removed, &nremoved); 1801 /* Set it to NULL to prevent it from being freed 1802 * at the bottom of hpsa_update_scsi_devices() 1803 */ 1804 sd[entry] = NULL; 1805 } else if (device_change == DEVICE_UPDATED) { 1806 hpsa_scsi_update_entry(h, i, sd[entry]); 1807 } 1808 i++; 1809 } 1810 1811 /* Now, make sure every device listed in sd[] is also 1812 * listed in h->dev[], adding them if they aren't found 1813 */ 1814 1815 for (i = 0; i < nsds; i++) { 1816 if (!sd[i]) /* if already added above. */ 1817 continue; 1818 1819 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS 1820 * as the SCSI mid-layer does not handle such devices well. 1821 * It relentlessly loops sending TUR at 3Hz, then READ(10) 1822 * at 160Hz, and prevents the system from coming up. 1823 */ 1824 if (sd[i]->volume_offline) { 1825 hpsa_show_volume_status(h, sd[i]); 1826 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline"); 1827 continue; 1828 } 1829 1830 device_change = hpsa_scsi_find_entry(sd[i], h->dev, 1831 h->ndevices, &entry); 1832 if (device_change == DEVICE_NOT_FOUND) { 1833 changes++; 1834 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0) 1835 break; 1836 sd[i] = NULL; /* prevent from being freed later. */ 1837 } else if (device_change == DEVICE_CHANGED) { 1838 /* should never happen... */ 1839 changes++; 1840 dev_warn(&h->pdev->dev, 1841 "device unexpectedly changed.\n"); 1842 /* but if it does happen, we just ignore that device */ 1843 } 1844 } 1845 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices); 1846 1847 /* Now that h->dev[]->phys_disk[] is coherent, we can enable 1848 * any logical drives that need it enabled. 1849 */ 1850 for (i = 0; i < h->ndevices; i++) { 1851 if (h->dev[i] == NULL) 1852 continue; 1853 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled; 1854 } 1855 1856 spin_unlock_irqrestore(&h->devlock, flags); 1857 1858 /* Monitor devices which are in one of several NOT READY states to be 1859 * brought online later. This must be done without holding h->devlock, 1860 * so don't touch h->dev[] 1861 */ 1862 for (i = 0; i < nsds; i++) { 1863 if (!sd[i]) /* if already added above. */ 1864 continue; 1865 if (sd[i]->volume_offline) 1866 hpsa_monitor_offline_device(h, sd[i]->scsi3addr); 1867 } 1868 1869 /* Don't notify scsi mid layer of any changes the first time through 1870 * (or if there are no changes) scsi_scan_host will do it later the 1871 * first time through. 1872 */ 1873 if (!changes) 1874 goto free_and_out; 1875 1876 /* Notify scsi mid layer of any removed devices */ 1877 for (i = 0; i < nremoved; i++) { 1878 if (removed[i] == NULL) 1879 continue; 1880 if (removed[i]->expose_device) 1881 hpsa_remove_device(h, removed[i]); 1882 kfree(removed[i]); 1883 removed[i] = NULL; 1884 } 1885 1886 /* Notify scsi mid layer of any added devices */ 1887 for (i = 0; i < nadded; i++) { 1888 int rc = 0; 1889 1890 if (added[i] == NULL) 1891 continue; 1892 if (!(added[i]->expose_device)) 1893 continue; 1894 rc = hpsa_add_device(h, added[i]); 1895 if (!rc) 1896 continue; 1897 dev_warn(&h->pdev->dev, 1898 "addition failed %d, device not added.", rc); 1899 /* now we have to remove it from h->dev, 1900 * since it didn't get added to scsi mid layer 1901 */ 1902 fixup_botched_add(h, added[i]); 1903 h->drv_req_rescan = 1; 1904 } 1905 1906free_and_out: 1907 kfree(added); 1908 kfree(removed); 1909} 1910 1911/* 1912 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t * 1913 * Assume's h->devlock is held. 1914 */ 1915static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, 1916 int bus, int target, int lun) 1917{ 1918 int i; 1919 struct hpsa_scsi_dev_t *sd; 1920 1921 for (i = 0; i < h->ndevices; i++) { 1922 sd = h->dev[i]; 1923 if (sd->bus == bus && sd->target == target && sd->lun == lun) 1924 return sd; 1925 } 1926 return NULL; 1927} 1928 1929static int hpsa_slave_alloc(struct scsi_device *sdev) 1930{ 1931 struct hpsa_scsi_dev_t *sd; 1932 unsigned long flags; 1933 struct ctlr_info *h; 1934 1935 h = sdev_to_hba(sdev); 1936 spin_lock_irqsave(&h->devlock, flags); 1937 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) { 1938 struct scsi_target *starget; 1939 struct sas_rphy *rphy; 1940 1941 starget = scsi_target(sdev); 1942 rphy = target_to_rphy(starget); 1943 sd = hpsa_find_device_by_sas_rphy(h, rphy); 1944 if (sd) { 1945 sd->target = sdev_id(sdev); 1946 sd->lun = sdev->lun; 1947 } 1948 } else 1949 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), 1950 sdev_id(sdev), sdev->lun); 1951 1952 if (sd && sd->expose_device) { 1953 atomic_set(&sd->ioaccel_cmds_out, 0); 1954 sdev->hostdata = sd; 1955 } else 1956 sdev->hostdata = NULL; 1957 spin_unlock_irqrestore(&h->devlock, flags); 1958 return 0; 1959} 1960 1961/* configure scsi device based on internal per-device structure */ 1962static int hpsa_slave_configure(struct scsi_device *sdev) 1963{ 1964 struct hpsa_scsi_dev_t *sd; 1965 int queue_depth; 1966 1967 sd = sdev->hostdata; 1968 sdev->no_uld_attach = !sd || !sd->expose_device; 1969 1970 if (sd) 1971 queue_depth = sd->queue_depth != 0 ? 1972 sd->queue_depth : sdev->host->can_queue; 1973 else 1974 queue_depth = sdev->host->can_queue; 1975 1976 scsi_change_queue_depth(sdev, queue_depth); 1977 1978 return 0; 1979} 1980 1981static void hpsa_slave_destroy(struct scsi_device *sdev) 1982{ 1983 /* nothing to do. */ 1984} 1985 1986static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 1987{ 1988 int i; 1989 1990 if (!h->ioaccel2_cmd_sg_list) 1991 return; 1992 for (i = 0; i < h->nr_cmds; i++) { 1993 kfree(h->ioaccel2_cmd_sg_list[i]); 1994 h->ioaccel2_cmd_sg_list[i] = NULL; 1995 } 1996 kfree(h->ioaccel2_cmd_sg_list); 1997 h->ioaccel2_cmd_sg_list = NULL; 1998} 1999 2000static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) 2001{ 2002 int i; 2003 2004 if (h->chainsize <= 0) 2005 return 0; 2006 2007 h->ioaccel2_cmd_sg_list = 2008 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds, 2009 GFP_KERNEL); 2010 if (!h->ioaccel2_cmd_sg_list) 2011 return -ENOMEM; 2012 for (i = 0; i < h->nr_cmds; i++) { 2013 h->ioaccel2_cmd_sg_list[i] = 2014 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) * 2015 h->maxsgentries, GFP_KERNEL); 2016 if (!h->ioaccel2_cmd_sg_list[i]) 2017 goto clean; 2018 } 2019 return 0; 2020 2021clean: 2022 hpsa_free_ioaccel2_sg_chain_blocks(h); 2023 return -ENOMEM; 2024} 2025 2026static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) 2027{ 2028 int i; 2029 2030 if (!h->cmd_sg_list) 2031 return; 2032 for (i = 0; i < h->nr_cmds; i++) { 2033 kfree(h->cmd_sg_list[i]); 2034 h->cmd_sg_list[i] = NULL; 2035 } 2036 kfree(h->cmd_sg_list); 2037 h->cmd_sg_list = NULL; 2038} 2039 2040static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) 2041{ 2042 int i; 2043 2044 if (h->chainsize <= 0) 2045 return 0; 2046 2047 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, 2048 GFP_KERNEL); 2049 if (!h->cmd_sg_list) { 2050 dev_err(&h->pdev->dev, "Failed to allocate SG list\n"); 2051 return -ENOMEM; 2052 } 2053 for (i = 0; i < h->nr_cmds; i++) { 2054 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * 2055 h->chainsize, GFP_KERNEL); 2056 if (!h->cmd_sg_list[i]) { 2057 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n"); 2058 goto clean; 2059 } 2060 } 2061 return 0; 2062 2063clean: 2064 hpsa_free_sg_chain_blocks(h); 2065 return -ENOMEM; 2066} 2067 2068static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h, 2069 struct io_accel2_cmd *cp, struct CommandList *c) 2070{ 2071 struct ioaccel2_sg_element *chain_block; 2072 u64 temp64; 2073 u32 chain_size; 2074 2075 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex]; 2076 chain_size = le32_to_cpu(cp->sg[0].length); 2077 temp64 = pci_map_single(h->pdev, chain_block, chain_size, 2078 PCI_DMA_TODEVICE); 2079 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2080 /* prevent subsequent unmapping */ 2081 cp->sg->address = 0; 2082 return -1; 2083 } 2084 cp->sg->address = cpu_to_le64(temp64); 2085 return 0; 2086} 2087 2088static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h, 2089 struct io_accel2_cmd *cp) 2090{ 2091 struct ioaccel2_sg_element *chain_sg; 2092 u64 temp64; 2093 u32 chain_size; 2094 2095 chain_sg = cp->sg; 2096 temp64 = le64_to_cpu(chain_sg->address); 2097 chain_size = le32_to_cpu(cp->sg[0].length); 2098 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE); 2099} 2100 2101static int hpsa_map_sg_chain_block(struct ctlr_info *h, 2102 struct CommandList *c) 2103{ 2104 struct SGDescriptor *chain_sg, *chain_block; 2105 u64 temp64; 2106 u32 chain_len; 2107 2108 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2109 chain_block = h->cmd_sg_list[c->cmdindex]; 2110 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN); 2111 chain_len = sizeof(*chain_sg) * 2112 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries); 2113 chain_sg->Len = cpu_to_le32(chain_len); 2114 temp64 = pci_map_single(h->pdev, chain_block, chain_len, 2115 PCI_DMA_TODEVICE); 2116 if (dma_mapping_error(&h->pdev->dev, temp64)) { 2117 /* prevent subsequent unmapping */ 2118 chain_sg->Addr = cpu_to_le64(0); 2119 return -1; 2120 } 2121 chain_sg->Addr = cpu_to_le64(temp64); 2122 return 0; 2123} 2124 2125static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, 2126 struct CommandList *c) 2127{ 2128 struct SGDescriptor *chain_sg; 2129 2130 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries) 2131 return; 2132 2133 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 2134 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr), 2135 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE); 2136} 2137 2138 2139/* Decode the various types of errors on ioaccel2 path. 2140 * Return 1 for any error that should generate a RAID path retry. 2141 * Return 0 for errors that don't require a RAID path retry. 2142 */ 2143static int handle_ioaccel_mode2_error(struct ctlr_info *h, 2144 struct CommandList *c, 2145 struct scsi_cmnd *cmd, 2146 struct io_accel2_cmd *c2) 2147{ 2148 int data_len; 2149 int retry = 0; 2150 u32 ioaccel2_resid = 0; 2151 2152 switch (c2->error_data.serv_response) { 2153 case IOACCEL2_SERV_RESPONSE_COMPLETE: 2154 switch (c2->error_data.status) { 2155 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD: 2156 break; 2157 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND: 2158 cmd->result |= SAM_STAT_CHECK_CONDITION; 2159 if (c2->error_data.data_present != 2160 IOACCEL2_SENSE_DATA_PRESENT) { 2161 memset(cmd->sense_buffer, 0, 2162 SCSI_SENSE_BUFFERSIZE); 2163 break; 2164 } 2165 /* copy the sense data */ 2166 data_len = c2->error_data.sense_data_len; 2167 if (data_len > SCSI_SENSE_BUFFERSIZE) 2168 data_len = SCSI_SENSE_BUFFERSIZE; 2169 if (data_len > sizeof(c2->error_data.sense_data_buff)) 2170 data_len = 2171 sizeof(c2->error_data.sense_data_buff); 2172 memcpy(cmd->sense_buffer, 2173 c2->error_data.sense_data_buff, data_len); 2174 retry = 1; 2175 break; 2176 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY: 2177 retry = 1; 2178 break; 2179 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON: 2180 retry = 1; 2181 break; 2182 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL: 2183 retry = 1; 2184 break; 2185 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED: 2186 retry = 1; 2187 break; 2188 default: 2189 retry = 1; 2190 break; 2191 } 2192 break; 2193 case IOACCEL2_SERV_RESPONSE_FAILURE: 2194 switch (c2->error_data.status) { 2195 case IOACCEL2_STATUS_SR_IO_ERROR: 2196 case IOACCEL2_STATUS_SR_IO_ABORTED: 2197 case IOACCEL2_STATUS_SR_OVERRUN: 2198 retry = 1; 2199 break; 2200 case IOACCEL2_STATUS_SR_UNDERRUN: 2201 cmd->result = (DID_OK << 16); /* host byte */ 2202 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2203 ioaccel2_resid = get_unaligned_le32( 2204 &c2->error_data.resid_cnt[0]); 2205 scsi_set_resid(cmd, ioaccel2_resid); 2206 break; 2207 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE: 2208 case IOACCEL2_STATUS_SR_INVALID_DEVICE: 2209 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED: 2210 /* We will get an event from ctlr to trigger rescan */ 2211 retry = 1; 2212 break; 2213 default: 2214 retry = 1; 2215 } 2216 break; 2217 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: 2218 break; 2219 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: 2220 break; 2221 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: 2222 retry = 1; 2223 break; 2224 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: 2225 break; 2226 default: 2227 retry = 1; 2228 break; 2229 } 2230 2231 return retry; /* retry on raid path? */ 2232} 2233 2234static void hpsa_cmd_resolve_events(struct ctlr_info *h, 2235 struct CommandList *c) 2236{ 2237 bool do_wake = false; 2238 2239 /* 2240 * Prevent the following race in the abort handler: 2241 * 2242 * 1. LLD is requested to abort a SCSI command 2243 * 2. The SCSI command completes 2244 * 3. The struct CommandList associated with step 2 is made available 2245 * 4. New I/O request to LLD to another LUN re-uses struct CommandList 2246 * 5. Abort handler follows scsi_cmnd->host_scribble and 2247 * finds struct CommandList and tries to aborts it 2248 * Now we have aborted the wrong command. 2249 * 2250 * Reset c->scsi_cmd here so that the abort or reset handler will know 2251 * this command has completed. Then, check to see if the handler is 2252 * waiting for this command, and, if so, wake it. 2253 */ 2254 c->scsi_cmd = SCSI_CMD_IDLE; 2255 mb(); /* Declare command idle before checking for pending events. */ 2256 if (c->abort_pending) { 2257 do_wake = true; 2258 c->abort_pending = false; 2259 } 2260 if (c->reset_pending) { 2261 unsigned long flags; 2262 struct hpsa_scsi_dev_t *dev; 2263 2264 /* 2265 * There appears to be a reset pending; lock the lock and 2266 * reconfirm. If so, then decrement the count of outstanding 2267 * commands and wake the reset command if this is the last one. 2268 */ 2269 spin_lock_irqsave(&h->lock, flags); 2270 dev = c->reset_pending; /* Re-fetch under the lock. */ 2271 if (dev && atomic_dec_and_test(&dev->reset_cmds_out)) 2272 do_wake = true; 2273 c->reset_pending = NULL; 2274 spin_unlock_irqrestore(&h->lock, flags); 2275 } 2276 2277 if (do_wake) 2278 wake_up_all(&h->event_sync_wait_queue); 2279} 2280 2281static void hpsa_cmd_resolve_and_free(struct ctlr_info *h, 2282 struct CommandList *c) 2283{ 2284 hpsa_cmd_resolve_events(h, c); 2285 cmd_tagged_free(h, c); 2286} 2287 2288static void hpsa_cmd_free_and_done(struct ctlr_info *h, 2289 struct CommandList *c, struct scsi_cmnd *cmd) 2290{ 2291 hpsa_cmd_resolve_and_free(h, c); 2292 cmd->scsi_done(cmd); 2293} 2294 2295static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c) 2296{ 2297 INIT_WORK(&c->work, hpsa_command_resubmit_worker); 2298 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); 2299} 2300 2301static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd) 2302{ 2303 cmd->result = DID_ABORT << 16; 2304} 2305 2306static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c, 2307 struct scsi_cmnd *cmd) 2308{ 2309 hpsa_set_scsi_cmd_aborted(cmd); 2310 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n", 2311 c->Request.CDB, c->err_info->ScsiStatus); 2312 hpsa_cmd_resolve_and_free(h, c); 2313} 2314 2315static void process_ioaccel2_completion(struct ctlr_info *h, 2316 struct CommandList *c, struct scsi_cmnd *cmd, 2317 struct hpsa_scsi_dev_t *dev) 2318{ 2319 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 2320 2321 /* check for good status */ 2322 if (likely(c2->error_data.serv_response == 0 && 2323 c2->error_data.status == 0)) 2324 return hpsa_cmd_free_and_done(h, c, cmd); 2325 2326 /* 2327 * Any RAID offload error results in retry which will use 2328 * the normal I/O path so the controller can handle whatever's 2329 * wrong. 2330 */ 2331 if (is_logical_device(dev) && 2332 c2->error_data.serv_response == 2333 IOACCEL2_SERV_RESPONSE_FAILURE) { 2334 if (c2->error_data.status == 2335 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) 2336 dev->offload_enabled = 0; 2337 2338 return hpsa_retry_cmd(h, c); 2339 } 2340 2341 if (handle_ioaccel_mode2_error(h, c, cmd, c2)) 2342 return hpsa_retry_cmd(h, c); 2343 2344 return hpsa_cmd_free_and_done(h, c, cmd); 2345} 2346 2347/* Returns 0 on success, < 0 otherwise. */ 2348static int hpsa_evaluate_tmf_status(struct ctlr_info *h, 2349 struct CommandList *cp) 2350{ 2351 u8 tmf_status = cp->err_info->ScsiStatus; 2352 2353 switch (tmf_status) { 2354 case CISS_TMF_COMPLETE: 2355 /* 2356 * CISS_TMF_COMPLETE never happens, instead, 2357 * ei->CommandStatus == 0 for this case. 2358 */ 2359 case CISS_TMF_SUCCESS: 2360 return 0; 2361 case CISS_TMF_INVALID_FRAME: 2362 case CISS_TMF_NOT_SUPPORTED: 2363 case CISS_TMF_FAILED: 2364 case CISS_TMF_WRONG_LUN: 2365 case CISS_TMF_OVERLAPPED_TAG: 2366 break; 2367 default: 2368 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n", 2369 tmf_status); 2370 break; 2371 } 2372 return -tmf_status; 2373} 2374 2375static void complete_scsi_command(struct CommandList *cp) 2376{ 2377 struct scsi_cmnd *cmd; 2378 struct ctlr_info *h; 2379 struct ErrorInfo *ei; 2380 struct hpsa_scsi_dev_t *dev; 2381 struct io_accel2_cmd *c2; 2382 2383 u8 sense_key; 2384 u8 asc; /* additional sense code */ 2385 u8 ascq; /* additional sense code qualifier */ 2386 unsigned long sense_data_size; 2387 2388 ei = cp->err_info; 2389 cmd = cp->scsi_cmd; 2390 h = cp->h; 2391 dev = cmd->device->hostdata; 2392 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex]; 2393 2394 scsi_dma_unmap(cmd); /* undo the DMA mappings */ 2395 if ((cp->cmd_type == CMD_SCSI) && 2396 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries)) 2397 hpsa_unmap_sg_chain_block(h, cp); 2398 2399 if ((cp->cmd_type == CMD_IOACCEL2) && 2400 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN)) 2401 hpsa_unmap_ioaccel2_sg_chain_block(h, c2); 2402 2403 cmd->result = (DID_OK << 16); /* host byte */ 2404 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 2405 2406 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) 2407 atomic_dec(&cp->phys_disk->ioaccel_cmds_out); 2408 2409 /* 2410 * We check for lockup status here as it may be set for 2411 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by 2412 * fail_all_oustanding_cmds() 2413 */ 2414 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) { 2415 /* DID_NO_CONNECT will prevent a retry */ 2416 cmd->result = DID_NO_CONNECT << 16; 2417 return hpsa_cmd_free_and_done(h, cp, cmd); 2418 } 2419 2420 if ((unlikely(hpsa_is_pending_event(cp)))) { 2421 if (cp->reset_pending) 2422 return hpsa_cmd_resolve_and_free(h, cp); 2423 if (cp->abort_pending) 2424 return hpsa_cmd_abort_and_free(h, cp, cmd); 2425 } 2426 2427 if (cp->cmd_type == CMD_IOACCEL2) 2428 return process_ioaccel2_completion(h, cp, cmd, dev); 2429 2430 scsi_set_resid(cmd, ei->ResidualCnt); 2431 if (ei->CommandStatus == 0) 2432 return hpsa_cmd_free_and_done(h, cp, cmd); 2433 2434 /* For I/O accelerator commands, copy over some fields to the normal 2435 * CISS header used below for error handling. 2436 */ 2437 if (cp->cmd_type == CMD_IOACCEL1) { 2438 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex]; 2439 cp->Header.SGList = scsi_sg_count(cmd); 2440 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList); 2441 cp->Request.CDBLen = le16_to_cpu(c->io_flags) & 2442 IOACCEL1_IOFLAGS_CDBLEN_MASK; 2443 cp->Header.tag = c->tag; 2444 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8); 2445 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen); 2446 2447 /* Any RAID offload error results in retry which will use 2448 * the normal I/O path so the controller can handle whatever's 2449 * wrong. 2450 */ 2451 if (is_logical_device(dev)) { 2452 if (ei->CommandStatus == CMD_IOACCEL_DISABLED) 2453 dev->offload_enabled = 0; 2454 return hpsa_retry_cmd(h, cp); 2455 } 2456 } 2457 2458 /* an error has occurred */ 2459 switch (ei->CommandStatus) { 2460 2461 case CMD_TARGET_STATUS: 2462 cmd->result |= ei->ScsiStatus; 2463 /* copy the sense data */ 2464 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) 2465 sense_data_size = SCSI_SENSE_BUFFERSIZE; 2466 else 2467 sense_data_size = sizeof(ei->SenseInfo); 2468 if (ei->SenseLen < sense_data_size) 2469 sense_data_size = ei->SenseLen; 2470 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); 2471 if (ei->ScsiStatus) 2472 decode_sense_data(ei->SenseInfo, sense_data_size, 2473 &sense_key, &asc, &ascq); 2474 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { 2475 if (sense_key == ABORTED_COMMAND) { 2476 cmd->result |= DID_SOFT_ERROR << 16; 2477 break; 2478 } 2479 break; 2480 } 2481 /* Problem was not a check condition 2482 * Pass it up to the upper layers... 2483 */ 2484 if (ei->ScsiStatus) { 2485 dev_warn(&h->pdev->dev, "cp %p has status 0x%x " 2486 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " 2487 "Returning result: 0x%x\n", 2488 cp, ei->ScsiStatus, 2489 sense_key, asc, ascq, 2490 cmd->result); 2491 } else { /* scsi status is zero??? How??? */ 2492 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " 2493 "Returning no connection.\n", cp), 2494 2495 /* Ordinarily, this case should never happen, 2496 * but there is a bug in some released firmware 2497 * revisions that allows it to happen if, for 2498 * example, a 4100 backplane loses power and 2499 * the tape drive is in it. We assume that 2500 * it's a fatal error of some kind because we 2501 * can't show that it wasn't. We will make it 2502 * look like selection timeout since that is 2503 * the most common reason for this to occur, 2504 * and it's severe enough. 2505 */ 2506 2507 cmd->result = DID_NO_CONNECT << 16; 2508 } 2509 break; 2510 2511 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2512 break; 2513 case CMD_DATA_OVERRUN: 2514 dev_warn(&h->pdev->dev, 2515 "CDB %16phN data overrun\n", cp->Request.CDB); 2516 break; 2517 case CMD_INVALID: { 2518 /* print_bytes(cp, sizeof(*cp), 1, 0); 2519 print_cmd(cp); */ 2520 /* We get CMD_INVALID if you address a non-existent device 2521 * instead of a selection timeout (no response). You will 2522 * see this if you yank out a drive, then try to access it. 2523 * This is kind of a shame because it means that any other 2524 * CMD_INVALID (e.g. driver bug) will get interpreted as a 2525 * missing target. */ 2526 cmd->result = DID_NO_CONNECT << 16; 2527 } 2528 break; 2529 case CMD_PROTOCOL_ERR: 2530 cmd->result = DID_ERROR << 16; 2531 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n", 2532 cp->Request.CDB); 2533 break; 2534 case CMD_HARDWARE_ERR: 2535 cmd->result = DID_ERROR << 16; 2536 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n", 2537 cp->Request.CDB); 2538 break; 2539 case CMD_CONNECTION_LOST: 2540 cmd->result = DID_ERROR << 16; 2541 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n", 2542 cp->Request.CDB); 2543 break; 2544 case CMD_ABORTED: 2545 /* Return now to avoid calling scsi_done(). */ 2546 return hpsa_cmd_abort_and_free(h, cp, cmd); 2547 case CMD_ABORT_FAILED: 2548 cmd->result = DID_ERROR << 16; 2549 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n", 2550 cp->Request.CDB); 2551 break; 2552 case CMD_UNSOLICITED_ABORT: 2553 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */ 2554 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n", 2555 cp->Request.CDB); 2556 break; 2557 case CMD_TIMEOUT: 2558 cmd->result = DID_TIME_OUT << 16; 2559 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n", 2560 cp->Request.CDB); 2561 break; 2562 case CMD_UNABORTABLE: 2563 cmd->result = DID_ERROR << 16; 2564 dev_warn(&h->pdev->dev, "Command unabortable\n"); 2565 break; 2566 case CMD_TMF_STATUS: 2567 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */ 2568 cmd->result = DID_ERROR << 16; 2569 break; 2570 case CMD_IOACCEL_DISABLED: 2571 /* This only handles the direct pass-through case since RAID 2572 * offload is handled above. Just attempt a retry. 2573 */ 2574 cmd->result = DID_SOFT_ERROR << 16; 2575 dev_warn(&h->pdev->dev, 2576 "cp %p had HP SSD Smart Path error\n", cp); 2577 break; 2578 default: 2579 cmd->result = DID_ERROR << 16; 2580 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", 2581 cp, ei->CommandStatus); 2582 } 2583 2584 return hpsa_cmd_free_and_done(h, cp, cmd); 2585} 2586 2587static void hpsa_pci_unmap(struct pci_dev *pdev, 2588 struct CommandList *c, int sg_used, int data_direction) 2589{ 2590 int i; 2591 2592 for (i = 0; i < sg_used; i++) 2593 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr), 2594 le32_to_cpu(c->SG[i].Len), 2595 data_direction); 2596} 2597 2598static int hpsa_map_one(struct pci_dev *pdev, 2599 struct CommandList *cp, 2600 unsigned char *buf, 2601 size_t buflen, 2602 int data_direction) 2603{ 2604 u64 addr64; 2605 2606 if (buflen == 0 || data_direction == PCI_DMA_NONE) { 2607 cp->Header.SGList = 0; 2608 cp->Header.SGTotal = cpu_to_le16(0); 2609 return 0; 2610 } 2611 2612 addr64 = pci_map_single(pdev, buf, buflen, data_direction); 2613 if (dma_mapping_error(&pdev->dev, addr64)) { 2614 /* Prevent subsequent unmap of something never mapped */ 2615 cp->Header.SGList = 0; 2616 cp->Header.SGTotal = cpu_to_le16(0); 2617 return -1; 2618 } 2619 cp->SG[0].Addr = cpu_to_le64(addr64); 2620 cp->SG[0].Len = cpu_to_le32(buflen); 2621 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */ 2622 cp->Header.SGList = 1; /* no. SGs contig in this cmd */ 2623 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */ 2624 return 0; 2625} 2626 2627#define NO_TIMEOUT ((unsigned long) -1) 2628#define DEFAULT_TIMEOUT 30000 /* milliseconds */ 2629static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, 2630 struct CommandList *c, int reply_queue, unsigned long timeout_msecs) 2631{ 2632 DECLARE_COMPLETION_ONSTACK(wait); 2633 2634 c->waiting = &wait; 2635 __enqueue_cmd_and_start_io(h, c, reply_queue); 2636 if (timeout_msecs == NO_TIMEOUT) { 2637 /* TODO: get rid of this no-timeout thing */ 2638 wait_for_completion_io(&wait); 2639 return IO_OK; 2640 } 2641 if (!wait_for_completion_io_timeout(&wait, 2642 msecs_to_jiffies(timeout_msecs))) { 2643 dev_warn(&h->pdev->dev, "Command timed out.\n"); 2644 return -ETIMEDOUT; 2645 } 2646 return IO_OK; 2647} 2648 2649static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c, 2650 int reply_queue, unsigned long timeout_msecs) 2651{ 2652 if (unlikely(lockup_detected(h))) { 2653 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 2654 return IO_OK; 2655 } 2656 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs); 2657} 2658 2659static u32 lockup_detected(struct ctlr_info *h) 2660{ 2661 int cpu; 2662 u32 rc, *lockup_detected; 2663 2664 cpu = get_cpu(); 2665 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 2666 rc = *lockup_detected; 2667 put_cpu(); 2668 return rc; 2669} 2670 2671#define MAX_DRIVER_CMD_RETRIES 25 2672static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, 2673 struct CommandList *c, int data_direction, unsigned long timeout_msecs) 2674{ 2675 int backoff_time = 10, retry_count = 0; 2676 int rc; 2677 2678 do { 2679 memset(c->err_info, 0, sizeof(*c->err_info)); 2680 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, 2681 timeout_msecs); 2682 if (rc) 2683 break; 2684 retry_count++; 2685 if (retry_count > 3) { 2686 msleep(backoff_time); 2687 if (backoff_time < 1000) 2688 backoff_time *= 2; 2689 } 2690 } while ((check_for_unit_attention(h, c) || 2691 check_for_busy(h, c)) && 2692 retry_count <= MAX_DRIVER_CMD_RETRIES); 2693 hpsa_pci_unmap(h->pdev, c, 1, data_direction); 2694 if (retry_count > MAX_DRIVER_CMD_RETRIES) 2695 rc = -EIO; 2696 return rc; 2697} 2698 2699static void hpsa_print_cmd(struct ctlr_info *h, char *txt, 2700 struct CommandList *c) 2701{ 2702 const u8 *cdb = c->Request.CDB; 2703 const u8 *lun = c->Header.LUN.LunAddrBytes; 2704 2705 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x" 2706 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n", 2707 txt, lun[0], lun[1], lun[2], lun[3], 2708 lun[4], lun[5], lun[6], lun[7], 2709 cdb[0], cdb[1], cdb[2], cdb[3], 2710 cdb[4], cdb[5], cdb[6], cdb[7], 2711 cdb[8], cdb[9], cdb[10], cdb[11], 2712 cdb[12], cdb[13], cdb[14], cdb[15]); 2713} 2714 2715static void hpsa_scsi_interpret_error(struct ctlr_info *h, 2716 struct CommandList *cp) 2717{ 2718 const struct ErrorInfo *ei = cp->err_info; 2719 struct device *d = &cp->h->pdev->dev; 2720 u8 sense_key, asc, ascq; 2721 int sense_len; 2722 2723 switch (ei->CommandStatus) { 2724 case CMD_TARGET_STATUS: 2725 if (ei->SenseLen > sizeof(ei->SenseInfo)) 2726 sense_len = sizeof(ei->SenseInfo); 2727 else 2728 sense_len = ei->SenseLen; 2729 decode_sense_data(ei->SenseInfo, sense_len, 2730 &sense_key, &asc, &ascq); 2731 hpsa_print_cmd(h, "SCSI status", cp); 2732 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) 2733 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n", 2734 sense_key, asc, ascq); 2735 else 2736 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus); 2737 if (ei->ScsiStatus == 0) 2738 dev_warn(d, "SCSI status is abnormally zero. " 2739 "(probably indicates selection timeout " 2740 "reported incorrectly due to a known " 2741 "firmware bug, circa July, 2001.)\n"); 2742 break; 2743 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 2744 break; 2745 case CMD_DATA_OVERRUN: 2746 hpsa_print_cmd(h, "overrun condition", cp); 2747 break; 2748 case CMD_INVALID: { 2749 /* controller unfortunately reports SCSI passthru's 2750 * to non-existent targets as invalid commands. 2751 */ 2752 hpsa_print_cmd(h, "invalid command", cp); 2753 dev_warn(d, "probably means device no longer present\n"); 2754 } 2755 break; 2756 case CMD_PROTOCOL_ERR: 2757 hpsa_print_cmd(h, "protocol error", cp); 2758 break; 2759 case CMD_HARDWARE_ERR: 2760 hpsa_print_cmd(h, "hardware error", cp); 2761 break; 2762 case CMD_CONNECTION_LOST: 2763 hpsa_print_cmd(h, "connection lost", cp); 2764 break; 2765 case CMD_ABORTED: 2766 hpsa_print_cmd(h, "aborted", cp); 2767 break; 2768 case CMD_ABORT_FAILED: 2769 hpsa_print_cmd(h, "abort failed", cp); 2770 break; 2771 case CMD_UNSOLICITED_ABORT: 2772 hpsa_print_cmd(h, "unsolicited abort", cp); 2773 break; 2774 case CMD_TIMEOUT: 2775 hpsa_print_cmd(h, "timed out", cp); 2776 break; 2777 case CMD_UNABORTABLE: 2778 hpsa_print_cmd(h, "unabortable", cp); 2779 break; 2780 case CMD_CTLR_LOCKUP: 2781 hpsa_print_cmd(h, "controller lockup detected", cp); 2782 break; 2783 default: 2784 hpsa_print_cmd(h, "unknown status", cp); 2785 dev_warn(d, "Unknown command status %x\n", 2786 ei->CommandStatus); 2787 } 2788} 2789 2790static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, 2791 u16 page, unsigned char *buf, 2792 unsigned char bufsize) 2793{ 2794 int rc = IO_OK; 2795 struct CommandList *c; 2796 struct ErrorInfo *ei; 2797 2798 c = cmd_alloc(h); 2799 2800 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, 2801 page, scsi3addr, TYPE_CMD)) { 2802 rc = -1; 2803 goto out; 2804 } 2805 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 2806 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 2807 if (rc) 2808 goto out; 2809 ei = c->err_info; 2810 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 2811 hpsa_scsi_interpret_error(h, c); 2812 rc = -1; 2813 } 2814out: 2815 cmd_free(h, c); 2816 return rc; 2817} 2818 2819static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr, 2820 u8 reset_type, int reply_queue) 2821{ 2822 int rc = IO_OK; 2823 struct CommandList *c; 2824 struct ErrorInfo *ei; 2825 2826 c = cmd_alloc(h); 2827 2828 2829 /* fill_cmd can't fail here, no data buffer to map. */ 2830 (void) fill_cmd(c, reset_type, h, NULL, 0, 0, 2831 scsi3addr, TYPE_MSG); 2832 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 2833 if (rc) { 2834 dev_warn(&h->pdev->dev, "Failed to send reset command\n"); 2835 goto out; 2836 } 2837 /* no unmap needed here because no data xfer. */ 2838 2839 ei = c->err_info; 2840 if (ei->CommandStatus != 0) { 2841 hpsa_scsi_interpret_error(h, c); 2842 rc = -1; 2843 } 2844out: 2845 cmd_free(h, c); 2846 return rc; 2847} 2848 2849static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, 2850 struct hpsa_scsi_dev_t *dev, 2851 unsigned char *scsi3addr) 2852{ 2853 int i; 2854 bool match = false; 2855 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 2856 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; 2857 2858 if (hpsa_is_cmd_idle(c)) 2859 return false; 2860 2861 switch (c->cmd_type) { 2862 case CMD_SCSI: 2863 case CMD_IOCTL_PEND: 2864 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes, 2865 sizeof(c->Header.LUN.LunAddrBytes)); 2866 break; 2867 2868 case CMD_IOACCEL1: 2869 case CMD_IOACCEL2: 2870 if (c->phys_disk == dev) { 2871 /* HBA mode match */ 2872 match = true; 2873 } else { 2874 /* Possible RAID mode -- check each phys dev. */ 2875 /* FIXME: Do we need to take out a lock here? If 2876 * so, we could just call hpsa_get_pdisk_of_ioaccel2() 2877 * instead. */ 2878 for (i = 0; i < dev->nphysical_disks && !match; i++) { 2879 /* FIXME: an alternate test might be 2880 * 2881 * match = dev->phys_disk[i]->ioaccel_handle 2882 * == c2->scsi_nexus; */ 2883 match = dev->phys_disk[i] == c->phys_disk; 2884 } 2885 } 2886 break; 2887 2888 case IOACCEL2_TMF: 2889 for (i = 0; i < dev->nphysical_disks && !match; i++) { 2890 match = dev->phys_disk[i]->ioaccel_handle == 2891 le32_to_cpu(ac->it_nexus); 2892 } 2893 break; 2894 2895 case 0: /* The command is in the middle of being initialized. */ 2896 match = false; 2897 break; 2898 2899 default: 2900 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n", 2901 c->cmd_type); 2902 BUG(); 2903 } 2904 2905 return match; 2906} 2907 2908static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, 2909 unsigned char *scsi3addr, u8 reset_type, int reply_queue) 2910{ 2911 int i; 2912 int rc = 0; 2913 2914 /* We can really only handle one reset at a time */ 2915 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) { 2916 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n"); 2917 return -EINTR; 2918 } 2919 2920 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0); 2921 2922 for (i = 0; i < h->nr_cmds; i++) { 2923 struct CommandList *c = h->cmd_pool + i; 2924 int refcount = atomic_inc_return(&c->refcount); 2925 2926 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) { 2927 unsigned long flags; 2928 2929 /* 2930 * Mark the target command as having a reset pending, 2931 * then lock a lock so that the command cannot complete 2932 * while we're considering it. If the command is not 2933 * idle then count it; otherwise revoke the event. 2934 */ 2935 c->reset_pending = dev; 2936 spin_lock_irqsave(&h->lock, flags); /* Implied MB */ 2937 if (!hpsa_is_cmd_idle(c)) 2938 atomic_inc(&dev->reset_cmds_out); 2939 else 2940 c->reset_pending = NULL; 2941 spin_unlock_irqrestore(&h->lock, flags); 2942 } 2943 2944 cmd_free(h, c); 2945 } 2946 2947 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue); 2948 if (!rc) 2949 wait_event(h->event_sync_wait_queue, 2950 atomic_read(&dev->reset_cmds_out) == 0 || 2951 lockup_detected(h)); 2952 2953 if (unlikely(lockup_detected(h))) { 2954 dev_warn(&h->pdev->dev, 2955 "Controller lockup detected during reset wait\n"); 2956 rc = -ENODEV; 2957 } 2958 2959 if (unlikely(rc)) 2960 atomic_set(&dev->reset_cmds_out, 0); 2961 2962 mutex_unlock(&h->reset_mutex); 2963 return rc; 2964} 2965 2966static void hpsa_get_raid_level(struct ctlr_info *h, 2967 unsigned char *scsi3addr, unsigned char *raid_level) 2968{ 2969 int rc; 2970 unsigned char *buf; 2971 2972 *raid_level = RAID_UNKNOWN; 2973 buf = kzalloc(64, GFP_KERNEL); 2974 if (!buf) 2975 return; 2976 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64); 2977 if (rc == 0) 2978 *raid_level = buf[8]; 2979 if (*raid_level > RAID_UNKNOWN) 2980 *raid_level = RAID_UNKNOWN; 2981 kfree(buf); 2982 return; 2983} 2984 2985#define HPSA_MAP_DEBUG 2986#ifdef HPSA_MAP_DEBUG 2987static void hpsa_debug_map_buff(struct ctlr_info *h, int rc, 2988 struct raid_map_data *map_buff) 2989{ 2990 struct raid_map_disk_data *dd = &map_buff->data[0]; 2991 int map, row, col; 2992 u16 map_cnt, row_cnt, disks_per_row; 2993 2994 if (rc != 0) 2995 return; 2996 2997 /* Show details only if debugging has been activated. */ 2998 if (h->raid_offload_debug < 2) 2999 return; 3000 3001 dev_info(&h->pdev->dev, "structure_size = %u\n", 3002 le32_to_cpu(map_buff->structure_size)); 3003 dev_info(&h->pdev->dev, "volume_blk_size = %u\n", 3004 le32_to_cpu(map_buff->volume_blk_size)); 3005 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n", 3006 le64_to_cpu(map_buff->volume_blk_cnt)); 3007 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n", 3008 map_buff->phys_blk_shift); 3009 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n", 3010 map_buff->parity_rotation_shift); 3011 dev_info(&h->pdev->dev, "strip_size = %u\n", 3012 le16_to_cpu(map_buff->strip_size)); 3013 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n", 3014 le64_to_cpu(map_buff->disk_starting_blk)); 3015 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n", 3016 le64_to_cpu(map_buff->disk_blk_cnt)); 3017 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n", 3018 le16_to_cpu(map_buff->data_disks_per_row)); 3019 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n", 3020 le16_to_cpu(map_buff->metadata_disks_per_row)); 3021 dev_info(&h->pdev->dev, "row_cnt = %u\n", 3022 le16_to_cpu(map_buff->row_cnt)); 3023 dev_info(&h->pdev->dev, "layout_map_count = %u\n", 3024 le16_to_cpu(map_buff->layout_map_count)); 3025 dev_info(&h->pdev->dev, "flags = 0x%x\n", 3026 le16_to_cpu(map_buff->flags)); 3027 dev_info(&h->pdev->dev, "encrypytion = %s\n", 3028 le16_to_cpu(map_buff->flags) & 3029 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF"); 3030 dev_info(&h->pdev->dev, "dekindex = %u\n", 3031 le16_to_cpu(map_buff->dekindex)); 3032 map_cnt = le16_to_cpu(map_buff->layout_map_count); 3033 for (map = 0; map < map_cnt; map++) { 3034 dev_info(&h->pdev->dev, "Map%u:\n", map); 3035 row_cnt = le16_to_cpu(map_buff->row_cnt); 3036 for (row = 0; row < row_cnt; row++) { 3037 dev_info(&h->pdev->dev, " Row%u:\n", row); 3038 disks_per_row = 3039 le16_to_cpu(map_buff->data_disks_per_row); 3040 for (col = 0; col < disks_per_row; col++, dd++) 3041 dev_info(&h->pdev->dev, 3042 " D%02u: h=0x%04x xor=%u,%u\n", 3043 col, dd->ioaccel_handle, 3044 dd->xor_mult[0], dd->xor_mult[1]); 3045 disks_per_row = 3046 le16_to_cpu(map_buff->metadata_disks_per_row); 3047 for (col = 0; col < disks_per_row; col++, dd++) 3048 dev_info(&h->pdev->dev, 3049 " M%02u: h=0x%04x xor=%u,%u\n", 3050 col, dd->ioaccel_handle, 3051 dd->xor_mult[0], dd->xor_mult[1]); 3052 } 3053 } 3054} 3055#else 3056static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h, 3057 __attribute__((unused)) int rc, 3058 __attribute__((unused)) struct raid_map_data *map_buff) 3059{ 3060} 3061#endif 3062 3063static int hpsa_get_raid_map(struct ctlr_info *h, 3064 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3065{ 3066 int rc = 0; 3067 struct CommandList *c; 3068 struct ErrorInfo *ei; 3069 3070 c = cmd_alloc(h); 3071 3072 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, 3073 sizeof(this_device->raid_map), 0, 3074 scsi3addr, TYPE_CMD)) { 3075 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n"); 3076 cmd_free(h, c); 3077 return -1; 3078 } 3079 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 3080 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 3081 if (rc) 3082 goto out; 3083 ei = c->err_info; 3084 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3085 hpsa_scsi_interpret_error(h, c); 3086 rc = -1; 3087 goto out; 3088 } 3089 cmd_free(h, c); 3090 3091 /* @todo in the future, dynamically allocate RAID map memory */ 3092 if (le32_to_cpu(this_device->raid_map.structure_size) > 3093 sizeof(this_device->raid_map)) { 3094 dev_warn(&h->pdev->dev, "RAID map size is too large!\n"); 3095 rc = -1; 3096 } 3097 hpsa_debug_map_buff(h, rc, &this_device->raid_map); 3098 return rc; 3099out: 3100 cmd_free(h, c); 3101 return rc; 3102} 3103 3104static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, 3105 unsigned char scsi3addr[], u16 bmic_device_index, 3106 struct bmic_sense_subsystem_info *buf, size_t bufsize) 3107{ 3108 int rc = IO_OK; 3109 struct CommandList *c; 3110 struct ErrorInfo *ei; 3111 3112 c = cmd_alloc(h); 3113 3114 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, 3115 0, RAID_CTLR_LUNID, TYPE_CMD); 3116 if (rc) 3117 goto out; 3118 3119 c->Request.CDB[2] = bmic_device_index & 0xff; 3120 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3121 3122 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 3123 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 3124 if (rc) 3125 goto out; 3126 ei = c->err_info; 3127 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3128 hpsa_scsi_interpret_error(h, c); 3129 rc = -1; 3130 } 3131out: 3132 cmd_free(h, c); 3133 return rc; 3134} 3135 3136static int hpsa_bmic_id_controller(struct ctlr_info *h, 3137 struct bmic_identify_controller *buf, size_t bufsize) 3138{ 3139 int rc = IO_OK; 3140 struct CommandList *c; 3141 struct ErrorInfo *ei; 3142 3143 c = cmd_alloc(h); 3144 3145 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, 3146 0, RAID_CTLR_LUNID, TYPE_CMD); 3147 if (rc) 3148 goto out; 3149 3150 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 3151 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 3152 if (rc) 3153 goto out; 3154 ei = c->err_info; 3155 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3156 hpsa_scsi_interpret_error(h, c); 3157 rc = -1; 3158 } 3159out: 3160 cmd_free(h, c); 3161 return rc; 3162} 3163 3164static int hpsa_bmic_id_physical_device(struct ctlr_info *h, 3165 unsigned char scsi3addr[], u16 bmic_device_index, 3166 struct bmic_identify_physical_device *buf, size_t bufsize) 3167{ 3168 int rc = IO_OK; 3169 struct CommandList *c; 3170 struct ErrorInfo *ei; 3171 3172 c = cmd_alloc(h); 3173 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize, 3174 0, RAID_CTLR_LUNID, TYPE_CMD); 3175 if (rc) 3176 goto out; 3177 3178 c->Request.CDB[2] = bmic_device_index & 0xff; 3179 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; 3180 3181 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE, 3182 NO_TIMEOUT); 3183 ei = c->err_info; 3184 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 3185 hpsa_scsi_interpret_error(h, c); 3186 rc = -1; 3187 } 3188out: 3189 cmd_free(h, c); 3190 3191 return rc; 3192} 3193 3194static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h, 3195 unsigned char *scsi3addr) 3196{ 3197 struct ReportExtendedLUNdata *physdev; 3198 u32 nphysicals; 3199 u64 sa = 0; 3200 int i; 3201 3202 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL); 3203 if (!physdev) 3204 return 0; 3205 3206 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 3207 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 3208 kfree(physdev); 3209 return 0; 3210 } 3211 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24; 3212 3213 for (i = 0; i < nphysicals; i++) 3214 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) { 3215 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]); 3216 break; 3217 } 3218 3219 kfree(physdev); 3220 3221 return sa; 3222} 3223 3224static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr, 3225 struct hpsa_scsi_dev_t *dev) 3226{ 3227 int rc; 3228 u64 sa = 0; 3229 3230 if (is_hba_lunid(scsi3addr)) { 3231 struct bmic_sense_subsystem_info *ssi; 3232 3233 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL); 3234 if (ssi == NULL) { 3235 dev_warn(&h->pdev->dev, 3236 "%s: out of memory\n", __func__); 3237 return; 3238 } 3239 3240 rc = hpsa_bmic_sense_subsystem_information(h, 3241 scsi3addr, 0, ssi, sizeof(*ssi)); 3242 if (rc == 0) { 3243 sa = get_unaligned_be64(ssi->primary_world_wide_id); 3244 h->sas_address = sa; 3245 } 3246 3247 kfree(ssi); 3248 } else 3249 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr); 3250 3251 dev->sas_address = sa; 3252} 3253 3254/* Get a device id from inquiry page 0x83 */ 3255static int hpsa_vpd_page_supported(struct ctlr_info *h, 3256 unsigned char scsi3addr[], u8 page) 3257{ 3258 int rc; 3259 int i; 3260 int pages; 3261 unsigned char *buf, bufsize; 3262 3263 buf = kzalloc(256, GFP_KERNEL); 3264 if (!buf) 3265 return 0; 3266 3267 /* Get the size of the page list first */ 3268 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3269 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3270 buf, HPSA_VPD_HEADER_SZ); 3271 if (rc != 0) 3272 goto exit_unsupported; 3273 pages = buf[3]; 3274 if ((pages + HPSA_VPD_HEADER_SZ) <= 255) 3275 bufsize = pages + HPSA_VPD_HEADER_SZ; 3276 else 3277 bufsize = 255; 3278 3279 /* Get the whole VPD page list */ 3280 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3281 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, 3282 buf, bufsize); 3283 if (rc != 0) 3284 goto exit_unsupported; 3285 3286 pages = buf[3]; 3287 for (i = 1; i <= pages; i++) 3288 if (buf[3 + i] == page) 3289 goto exit_supported; 3290exit_unsupported: 3291 kfree(buf); 3292 return 0; 3293exit_supported: 3294 kfree(buf); 3295 return 1; 3296} 3297 3298static void hpsa_get_ioaccel_status(struct ctlr_info *h, 3299 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) 3300{ 3301 int rc; 3302 unsigned char *buf; 3303 u8 ioaccel_status; 3304 3305 this_device->offload_config = 0; 3306 this_device->offload_enabled = 0; 3307 this_device->offload_to_be_enabled = 0; 3308 3309 buf = kzalloc(64, GFP_KERNEL); 3310 if (!buf) 3311 return; 3312 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS)) 3313 goto out; 3314 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 3315 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64); 3316 if (rc != 0) 3317 goto out; 3318 3319#define IOACCEL_STATUS_BYTE 4 3320#define OFFLOAD_CONFIGURED_BIT 0x01 3321#define OFFLOAD_ENABLED_BIT 0x02 3322 ioaccel_status = buf[IOACCEL_STATUS_BYTE]; 3323 this_device->offload_config = 3324 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT); 3325 if (this_device->offload_config) { 3326 this_device->offload_enabled = 3327 !!(ioaccel_status & OFFLOAD_ENABLED_BIT); 3328 if (hpsa_get_raid_map(h, scsi3addr, this_device)) 3329 this_device->offload_enabled = 0; 3330 } 3331 this_device->offload_to_be_enabled = this_device->offload_enabled; 3332out: 3333 kfree(buf); 3334 return; 3335} 3336 3337/* Get the device id from inquiry page 0x83 */ 3338static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, 3339 unsigned char *device_id, int index, int buflen) 3340{ 3341 int rc; 3342 unsigned char *buf; 3343 3344 if (buflen > 16) 3345 buflen = 16; 3346 buf = kzalloc(64, GFP_KERNEL); 3347 if (!buf) 3348 return -ENOMEM; 3349 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64); 3350 if (rc == 0) 3351 memcpy(device_id, &buf[index], buflen); 3352 3353 kfree(buf); 3354 3355 return rc != 0; 3356} 3357 3358static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, 3359 void *buf, int bufsize, 3360 int extended_response) 3361{ 3362 int rc = IO_OK; 3363 struct CommandList *c; 3364 unsigned char scsi3addr[8]; 3365 struct ErrorInfo *ei; 3366 3367 c = cmd_alloc(h); 3368 3369 /* address the controller */ 3370 memset(scsi3addr, 0, sizeof(scsi3addr)); 3371 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, 3372 buf, bufsize, 0, scsi3addr, TYPE_CMD)) { 3373 rc = -1; 3374 goto out; 3375 } 3376 if (extended_response) 3377 c->Request.CDB[1] = extended_response; 3378 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 3379 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 3380 if (rc) 3381 goto out; 3382 ei = c->err_info; 3383 if (ei->CommandStatus != 0 && 3384 ei->CommandStatus != CMD_DATA_UNDERRUN) { 3385 hpsa_scsi_interpret_error(h, c); 3386 rc = -1; 3387 } else { 3388 struct ReportLUNdata *rld = buf; 3389 3390 if (rld->extended_response_flag != extended_response) { 3391 dev_err(&h->pdev->dev, 3392 "report luns requested format %u, got %u\n", 3393 extended_response, 3394 rld->extended_response_flag); 3395 rc = -1; 3396 } 3397 } 3398out: 3399 cmd_free(h, c); 3400 return rc; 3401} 3402 3403static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 3404 struct ReportExtendedLUNdata *buf, int bufsize) 3405{ 3406 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, 3407 HPSA_REPORT_PHYS_EXTENDED); 3408} 3409 3410static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, 3411 struct ReportLUNdata *buf, int bufsize) 3412{ 3413 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); 3414} 3415 3416static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, 3417 int bus, int target, int lun) 3418{ 3419 device->bus = bus; 3420 device->target = target; 3421 device->lun = lun; 3422} 3423 3424/* Use VPD inquiry to get details of volume status */ 3425static int hpsa_get_volume_status(struct ctlr_info *h, 3426 unsigned char scsi3addr[]) 3427{ 3428 int rc; 3429 int status; 3430 int size; 3431 unsigned char *buf; 3432 3433 buf = kzalloc(64, GFP_KERNEL); 3434 if (!buf) 3435 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3436 3437 /* Does controller have VPD for logical volume status? */ 3438 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS)) 3439 goto exit_failed; 3440 3441 /* Get the size of the VPD return buffer */ 3442 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3443 buf, HPSA_VPD_HEADER_SZ); 3444 if (rc != 0) 3445 goto exit_failed; 3446 size = buf[3]; 3447 3448 /* Now get the whole VPD buffer */ 3449 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS, 3450 buf, size + HPSA_VPD_HEADER_SZ); 3451 if (rc != 0) 3452 goto exit_failed; 3453 status = buf[4]; /* status byte */ 3454 3455 kfree(buf); 3456 return status; 3457exit_failed: 3458 kfree(buf); 3459 return HPSA_VPD_LV_STATUS_UNSUPPORTED; 3460} 3461 3462/* Determine offline status of a volume. 3463 * Return either: 3464 * 0 (not offline) 3465 * 0xff (offline for unknown reasons) 3466 * # (integer code indicating one of several NOT READY states 3467 * describing why a volume is to be kept offline) 3468 */ 3469static int hpsa_volume_offline(struct ctlr_info *h, 3470 unsigned char scsi3addr[]) 3471{ 3472 struct CommandList *c; 3473 unsigned char *sense; 3474 u8 sense_key, asc, ascq; 3475 int sense_len; 3476 int rc, ldstat = 0; 3477 u16 cmd_status; 3478 u8 scsi_status; 3479#define ASC_LUN_NOT_READY 0x04 3480#define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04 3481#define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 3482 3483 c = cmd_alloc(h); 3484 3485 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); 3486 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); 3487 if (rc) { 3488 cmd_free(h, c); 3489 return 0; 3490 } 3491 sense = c->err_info->SenseInfo; 3492 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) 3493 sense_len = sizeof(c->err_info->SenseInfo); 3494 else 3495 sense_len = c->err_info->SenseLen; 3496 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq); 3497 cmd_status = c->err_info->CommandStatus; 3498 scsi_status = c->err_info->ScsiStatus; 3499 cmd_free(h, c); 3500 /* Is the volume 'not ready'? */ 3501 if (cmd_status != CMD_TARGET_STATUS || 3502 scsi_status != SAM_STAT_CHECK_CONDITION || 3503 sense_key != NOT_READY || 3504 asc != ASC_LUN_NOT_READY) { 3505 return 0; 3506 } 3507 3508 /* Determine the reason for not ready state */ 3509 ldstat = hpsa_get_volume_status(h, scsi3addr); 3510 3511 /* Keep volume offline in certain cases: */ 3512 switch (ldstat) { 3513 case HPSA_LV_UNDERGOING_ERASE: 3514 case HPSA_LV_NOT_AVAILABLE: 3515 case HPSA_LV_UNDERGOING_RPI: 3516 case HPSA_LV_PENDING_RPI: 3517 case HPSA_LV_ENCRYPTED_NO_KEY: 3518 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER: 3519 case HPSA_LV_UNDERGOING_ENCRYPTION: 3520 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING: 3521 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 3522 return ldstat; 3523 case HPSA_VPD_LV_STATUS_UNSUPPORTED: 3524 /* If VPD status page isn't available, 3525 * use ASC/ASCQ to determine state 3526 */ 3527 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) || 3528 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ)) 3529 return ldstat; 3530 break; 3531 default: 3532 break; 3533 } 3534 return 0; 3535} 3536 3537/* 3538 * Find out if a logical device supports aborts by simply trying one. 3539 * Smart Array may claim not to support aborts on logical drives, but 3540 * if a MSA2000 * is connected, the drives on that will be presented 3541 * by the Smart Array as logical drives, and aborts may be sent to 3542 * those devices successfully. So the simplest way to find out is 3543 * to simply try an abort and see how the device responds. 3544 */ 3545static int hpsa_device_supports_aborts(struct ctlr_info *h, 3546 unsigned char *scsi3addr) 3547{ 3548 struct CommandList *c; 3549 struct ErrorInfo *ei; 3550 int rc = 0; 3551 3552 u64 tag = (u64) -1; /* bogus tag */ 3553 3554 /* Assume that physical devices support aborts */ 3555 if (!is_logical_dev_addr_mode(scsi3addr)) 3556 return 1; 3557 3558 c = cmd_alloc(h); 3559 3560 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG); 3561 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); 3562 /* no unmap needed here because no data xfer. */ 3563 ei = c->err_info; 3564 switch (ei->CommandStatus) { 3565 case CMD_INVALID: 3566 rc = 0; 3567 break; 3568 case CMD_UNABORTABLE: 3569 case CMD_ABORT_FAILED: 3570 rc = 1; 3571 break; 3572 case CMD_TMF_STATUS: 3573 rc = hpsa_evaluate_tmf_status(h, c); 3574 break; 3575 default: 3576 rc = 0; 3577 break; 3578 } 3579 cmd_free(h, c); 3580 return rc; 3581} 3582 3583static void sanitize_inquiry_string(unsigned char *s, int len) 3584{ 3585 bool terminated = false; 3586 3587 for (; len > 0; (--len, ++s)) { 3588 if (*s == 0) 3589 terminated = true; 3590 if (terminated || *s < 0x20 || *s > 0x7e) 3591 *s = ' '; 3592 } 3593} 3594 3595static int hpsa_update_device_info(struct ctlr_info *h, 3596 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, 3597 unsigned char *is_OBDR_device) 3598{ 3599 3600#define OBDR_SIG_OFFSET 43 3601#define OBDR_TAPE_SIG "$DR-10" 3602#define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1) 3603#define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN) 3604 3605 unsigned char *inq_buff; 3606 unsigned char *obdr_sig; 3607 int rc = 0; 3608 3609 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); 3610 if (!inq_buff) { 3611 rc = -ENOMEM; 3612 goto bail_out; 3613 } 3614 3615 /* Do an inquiry to the device to see what it is. */ 3616 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, 3617 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { 3618 /* Inquiry failed (msg printed already) */ 3619 dev_err(&h->pdev->dev, 3620 "hpsa_update_device_info: inquiry failed\n"); 3621 rc = -EIO; 3622 goto bail_out; 3623 } 3624 3625 sanitize_inquiry_string(&inq_buff[8], 8); 3626 sanitize_inquiry_string(&inq_buff[16], 16); 3627 3628 this_device->devtype = (inq_buff[0] & 0x1f); 3629 memcpy(this_device->scsi3addr, scsi3addr, 8); 3630 memcpy(this_device->vendor, &inq_buff[8], 3631 sizeof(this_device->vendor)); 3632 memcpy(this_device->model, &inq_buff[16], 3633 sizeof(this_device->model)); 3634 memset(this_device->device_id, 0, 3635 sizeof(this_device->device_id)); 3636 hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8, 3637 sizeof(this_device->device_id)); 3638 3639 if (this_device->devtype == TYPE_DISK && 3640 is_logical_dev_addr_mode(scsi3addr)) { 3641 int volume_offline; 3642 3643 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); 3644 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC) 3645 hpsa_get_ioaccel_status(h, scsi3addr, this_device); 3646 volume_offline = hpsa_volume_offline(h, scsi3addr); 3647 if (volume_offline < 0 || volume_offline > 0xff) 3648 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED; 3649 this_device->volume_offline = volume_offline & 0xff; 3650 } else { 3651 this_device->raid_level = RAID_UNKNOWN; 3652 this_device->offload_config = 0; 3653 this_device->offload_enabled = 0; 3654 this_device->offload_to_be_enabled = 0; 3655 this_device->hba_ioaccel_enabled = 0; 3656 this_device->volume_offline = 0; 3657 this_device->queue_depth = h->nr_cmds; 3658 } 3659 3660 if (is_OBDR_device) { 3661 /* See if this is a One-Button-Disaster-Recovery device 3662 * by looking for "$DR-10" at offset 43 in inquiry data. 3663 */ 3664 obdr_sig = &inq_buff[OBDR_SIG_OFFSET]; 3665 *is_OBDR_device = (this_device->devtype == TYPE_ROM && 3666 strncmp(obdr_sig, OBDR_TAPE_SIG, 3667 OBDR_SIG_LEN) == 0); 3668 } 3669 kfree(inq_buff); 3670 return 0; 3671 3672bail_out: 3673 kfree(inq_buff); 3674 return rc; 3675} 3676 3677static void hpsa_update_device_supports_aborts(struct ctlr_info *h, 3678 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr) 3679{ 3680 unsigned long flags; 3681 int rc, entry; 3682 /* 3683 * See if this device supports aborts. If we already know 3684 * the device, we already know if it supports aborts, otherwise 3685 * we have to find out if it supports aborts by trying one. 3686 */ 3687 spin_lock_irqsave(&h->devlock, flags); 3688 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry); 3689 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) && 3690 entry >= 0 && entry < h->ndevices) { 3691 dev->supports_aborts = h->dev[entry]->supports_aborts; 3692 spin_unlock_irqrestore(&h->devlock, flags); 3693 } else { 3694 spin_unlock_irqrestore(&h->devlock, flags); 3695 dev->supports_aborts = 3696 hpsa_device_supports_aborts(h, scsi3addr); 3697 if (dev->supports_aborts < 0) 3698 dev->supports_aborts = 0; 3699 } 3700} 3701 3702/* 3703 * Helper function to assign bus, target, lun mapping of devices. 3704 * Logical drive target and lun are assigned at this time, but 3705 * physical device lun and target assignment are deferred (assigned 3706 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) 3707*/ 3708static void figure_bus_target_lun(struct ctlr_info *h, 3709 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device) 3710{ 3711 u32 lunid = get_unaligned_le32(lunaddrbytes); 3712 3713 if (!is_logical_dev_addr_mode(lunaddrbytes)) { 3714 /* physical device, target and lun filled in later */ 3715 if (is_hba_lunid(lunaddrbytes)) 3716 hpsa_set_bus_target_lun(device, 3717 HPSA_HBA_BUS, 0, lunid & 0x3fff); 3718 else 3719 /* defer target, lun assignment for physical devices */ 3720 hpsa_set_bus_target_lun(device, 3721 HPSA_PHYSICAL_DEVICE_BUS, -1, -1); 3722 return; 3723 } 3724 /* It's a logical device */ 3725 if (device->external) { 3726 hpsa_set_bus_target_lun(device, 3727 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff, 3728 lunid & 0x00ff); 3729 return; 3730 } 3731 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS, 3732 0, lunid & 0x3fff); 3733} 3734 3735 3736/* 3737 * Get address of physical disk used for an ioaccel2 mode command: 3738 * 1. Extract ioaccel2 handle from the command. 3739 * 2. Find a matching ioaccel2 handle from list of physical disks. 3740 * 3. Return: 3741 * 1 and set scsi3addr to address of matching physical 3742 * 0 if no matching physical disk was found. 3743 */ 3744static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h, 3745 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr) 3746{ 3747 struct io_accel2_cmd *c2 = 3748 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex]; 3749 unsigned long flags; 3750 int i; 3751 3752 spin_lock_irqsave(&h->devlock, flags); 3753 for (i = 0; i < h->ndevices; i++) 3754 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) { 3755 memcpy(scsi3addr, h->dev[i]->scsi3addr, 3756 sizeof(h->dev[i]->scsi3addr)); 3757 spin_unlock_irqrestore(&h->devlock, flags); 3758 return 1; 3759 } 3760 spin_unlock_irqrestore(&h->devlock, flags); 3761 return 0; 3762} 3763 3764static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position, 3765 int i, int nphysicals, int nlocal_logicals) 3766{ 3767 /* In report logicals, local logicals are listed first, 3768 * then any externals. 3769 */ 3770 int logicals_start = nphysicals + (raid_ctlr_position == 0); 3771 3772 if (i == raid_ctlr_position) 3773 return 0; 3774 3775 if (i < logicals_start) 3776 return 0; 3777 3778 /* i is in logicals range, but still within local logicals */ 3779 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals) 3780 return 0; 3781 3782 return 1; /* it's an external lun */ 3783} 3784 3785/* 3786 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, 3787 * logdev. The number of luns in physdev and logdev are returned in 3788 * *nphysicals and *nlogicals, respectively. 3789 * Returns 0 on success, -1 otherwise. 3790 */ 3791static int hpsa_gather_lun_info(struct ctlr_info *h, 3792 struct ReportExtendedLUNdata *physdev, u32 *nphysicals, 3793 struct ReportLUNdata *logdev, u32 *nlogicals) 3794{ 3795 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { 3796 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 3797 return -1; 3798 } 3799 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24; 3800 if (*nphysicals > HPSA_MAX_PHYS_LUN) { 3801 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n", 3802 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN); 3803 *nphysicals = HPSA_MAX_PHYS_LUN; 3804 } 3805 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) { 3806 dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); 3807 return -1; 3808 } 3809 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; 3810 /* Reject Logicals in excess of our max capability. */ 3811 if (*nlogicals > HPSA_MAX_LUN) { 3812 dev_warn(&h->pdev->dev, 3813 "maximum logical LUNs (%d) exceeded. " 3814 "%d LUNs ignored.\n", HPSA_MAX_LUN, 3815 *nlogicals - HPSA_MAX_LUN); 3816 *nlogicals = HPSA_MAX_LUN; 3817 } 3818 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { 3819 dev_warn(&h->pdev->dev, 3820 "maximum logical + physical LUNs (%d) exceeded. " 3821 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, 3822 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); 3823 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; 3824 } 3825 return 0; 3826} 3827 3828static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, 3829 int i, int nphysicals, int nlogicals, 3830 struct ReportExtendedLUNdata *physdev_list, 3831 struct ReportLUNdata *logdev_list) 3832{ 3833 /* Helper function, figure out where the LUN ID info is coming from 3834 * given index i, lists of physical and logical devices, where in 3835 * the list the raid controller is supposed to appear (first or last) 3836 */ 3837 3838 int logicals_start = nphysicals + (raid_ctlr_position == 0); 3839 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); 3840 3841 if (i == raid_ctlr_position) 3842 return RAID_CTLR_LUNID; 3843 3844 if (i < logicals_start) 3845 return &physdev_list->LUN[i - 3846 (raid_ctlr_position == 0)].lunid[0]; 3847 3848 if (i < last_device) 3849 return &logdev_list->LUN[i - nphysicals - 3850 (raid_ctlr_position == 0)][0]; 3851 BUG(); 3852 return NULL; 3853} 3854 3855/* get physical drive ioaccel handle and queue depth */ 3856static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, 3857 struct hpsa_scsi_dev_t *dev, 3858 struct ReportExtendedLUNdata *rlep, int rle_index, 3859 struct bmic_identify_physical_device *id_phys) 3860{ 3861 int rc; 3862 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; 3863 3864 dev->ioaccel_handle = rle->ioaccel_handle; 3865 if ((rle->device_flags & 0x08) && dev->ioaccel_handle) 3866 dev->hba_ioaccel_enabled = 1; 3867 memset(id_phys, 0, sizeof(*id_phys)); 3868 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0], 3869 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys, 3870 sizeof(*id_phys)); 3871 if (!rc) 3872 /* Reserve space for FW operations */ 3873#define DRIVE_CMDS_RESERVED_FOR_FW 2 3874#define DRIVE_QUEUE_DEPTH 7 3875 dev->queue_depth = 3876 le16_to_cpu(id_phys->current_queue_depth_limit) - 3877 DRIVE_CMDS_RESERVED_FOR_FW; 3878 else 3879 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */ 3880} 3881 3882static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device, 3883 struct ReportExtendedLUNdata *rlep, int rle_index, 3884 struct bmic_identify_physical_device *id_phys) 3885{ 3886 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; 3887 3888 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle) 3889 this_device->hba_ioaccel_enabled = 1; 3890 3891 memcpy(&this_device->active_path_index, 3892 &id_phys->active_path_number, 3893 sizeof(this_device->active_path_index)); 3894 memcpy(&this_device->path_map, 3895 &id_phys->redundant_path_present_map, 3896 sizeof(this_device->path_map)); 3897 memcpy(&this_device->box, 3898 &id_phys->alternate_paths_phys_box_on_port, 3899 sizeof(this_device->box)); 3900 memcpy(&this_device->phys_connector, 3901 &id_phys->alternate_paths_phys_connector, 3902 sizeof(this_device->phys_connector)); 3903 memcpy(&this_device->bay, 3904 &id_phys->phys_bay_in_box, 3905 sizeof(this_device->bay)); 3906} 3907 3908/* get number of local logical disks. */ 3909static int hpsa_set_local_logical_count(struct ctlr_info *h, 3910 struct bmic_identify_controller *id_ctlr, 3911 u32 *nlocals) 3912{ 3913 int rc; 3914 3915 if (!id_ctlr) { 3916 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n", 3917 __func__); 3918 return -ENOMEM; 3919 } 3920 memset(id_ctlr, 0, sizeof(*id_ctlr)); 3921 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr)); 3922 if (!rc) 3923 if (id_ctlr->configured_logical_drive_count < 256) 3924 *nlocals = id_ctlr->configured_logical_drive_count; 3925 else 3926 *nlocals = le16_to_cpu( 3927 id_ctlr->extended_logical_unit_count); 3928 else 3929 *nlocals = -1; 3930 return rc; 3931} 3932 3933 3934static void hpsa_update_scsi_devices(struct ctlr_info *h) 3935{ 3936 /* the idea here is we could get notified 3937 * that some devices have changed, so we do a report 3938 * physical luns and report logical luns cmd, and adjust 3939 * our list of devices accordingly. 3940 * 3941 * The scsi3addr's of devices won't change so long as the 3942 * adapter is not reset. That means we can rescan and 3943 * tell which devices we already know about, vs. new 3944 * devices, vs. disappearing devices. 3945 */ 3946 struct ReportExtendedLUNdata *physdev_list = NULL; 3947 struct ReportLUNdata *logdev_list = NULL; 3948 struct bmic_identify_physical_device *id_phys = NULL; 3949 struct bmic_identify_controller *id_ctlr = NULL; 3950 u32 nphysicals = 0; 3951 u32 nlogicals = 0; 3952 u32 nlocal_logicals = 0; 3953 u32 ndev_allocated = 0; 3954 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; 3955 int ncurrent = 0; 3956 int i, n_ext_target_devs, ndevs_to_allocate; 3957 int raid_ctlr_position; 3958 bool physical_device; 3959 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); 3960 3961 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL); 3962 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL); 3963 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL); 3964 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); 3965 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); 3966 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL); 3967 3968 if (!currentsd || !physdev_list || !logdev_list || 3969 !tmpdevice || !id_phys || !id_ctlr) { 3970 dev_err(&h->pdev->dev, "out of memory\n"); 3971 goto out; 3972 } 3973 memset(lunzerobits, 0, sizeof(lunzerobits)); 3974 3975 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */ 3976 3977 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals, 3978 logdev_list, &nlogicals)) { 3979 h->drv_req_rescan = 1; 3980 goto out; 3981 } 3982 3983 /* Set number of local logicals (non PTRAID) */ 3984 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) { 3985 dev_warn(&h->pdev->dev, 3986 "%s: Can't determine number of local logical devices.\n", 3987 __func__); 3988 } 3989 3990 /* We might see up to the maximum number of logical and physical disks 3991 * plus external target devices, and a device for the local RAID 3992 * controller. 3993 */ 3994 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1; 3995 3996 /* Allocate the per device structures */ 3997 for (i = 0; i < ndevs_to_allocate; i++) { 3998 if (i >= HPSA_MAX_DEVICES) { 3999 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded." 4000 " %d devices ignored.\n", HPSA_MAX_DEVICES, 4001 ndevs_to_allocate - HPSA_MAX_DEVICES); 4002 break; 4003 } 4004 4005 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); 4006 if (!currentsd[i]) { 4007 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", 4008 __FILE__, __LINE__); 4009 h->drv_req_rescan = 1; 4010 goto out; 4011 } 4012 ndev_allocated++; 4013 } 4014 4015 if (is_scsi_rev_5(h)) 4016 raid_ctlr_position = 0; 4017 else 4018 raid_ctlr_position = nphysicals + nlogicals; 4019 4020 /* adjust our table of devices */ 4021 n_ext_target_devs = 0; 4022 for (i = 0; i < nphysicals + nlogicals + 1; i++) { 4023 u8 *lunaddrbytes, is_OBDR = 0; 4024 int rc = 0; 4025 int phys_dev_index = i - (raid_ctlr_position == 0); 4026 4027 physical_device = i < nphysicals + (raid_ctlr_position == 0); 4028 4029 /* Figure out where the LUN ID info is coming from */ 4030 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, 4031 i, nphysicals, nlogicals, physdev_list, logdev_list); 4032 4033 /* skip masked non-disk devices */ 4034 if (MASKED_DEVICE(lunaddrbytes) && physical_device && 4035 (physdev_list->LUN[phys_dev_index].device_flags & 0x01)) 4036 continue; 4037 4038 /* Get device type, vendor, model, device id */ 4039 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice, 4040 &is_OBDR); 4041 if (rc == -ENOMEM) { 4042 dev_warn(&h->pdev->dev, 4043 "Out of memory, rescan deferred.\n"); 4044 h->drv_req_rescan = 1; 4045 goto out; 4046 } 4047 if (rc) { 4048 dev_warn(&h->pdev->dev, 4049 "Inquiry failed, skipping device.\n"); 4050 continue; 4051 } 4052 4053 /* Determine if this is a lun from an external target array */ 4054 tmpdevice->external = 4055 figure_external_status(h, raid_ctlr_position, i, 4056 nphysicals, nlocal_logicals); 4057 4058 figure_bus_target_lun(h, lunaddrbytes, tmpdevice); 4059 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes); 4060 this_device = currentsd[ncurrent]; 4061 4062 /* Turn on discovery_polling if there are ext target devices. 4063 * Event-based change notification is unreliable for those. 4064 */ 4065 if (!h->discovery_polling) { 4066 if (tmpdevice->external) { 4067 h->discovery_polling = 1; 4068 dev_info(&h->pdev->dev, 4069 "External target, activate discovery polling.\n"); 4070 } 4071 } 4072 4073 4074 *this_device = *tmpdevice; 4075 this_device->physical_device = physical_device; 4076 4077 /* 4078 * Expose all devices except for physical devices that 4079 * are masked. 4080 */ 4081 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device) 4082 this_device->expose_device = 0; 4083 else 4084 this_device->expose_device = 1; 4085 4086 4087 /* 4088 * Get the SAS address for physical devices that are exposed. 4089 */ 4090 if (this_device->physical_device && this_device->expose_device) 4091 hpsa_get_sas_address(h, lunaddrbytes, this_device); 4092 4093 switch (this_device->devtype) { 4094 case TYPE_ROM: 4095 /* We don't *really* support actual CD-ROM devices, 4096 * just "One Button Disaster Recovery" tape drive 4097 * which temporarily pretends to be a CD-ROM drive. 4098 * So we check that the device is really an OBDR tape 4099 * device by checking for "$DR-10" in bytes 43-48 of 4100 * the inquiry data. 4101 */ 4102 if (is_OBDR) 4103 ncurrent++; 4104 break; 4105 case TYPE_DISK: 4106 if (this_device->physical_device) { 4107 /* The disk is in HBA mode. */ 4108 /* Never use RAID mapper in HBA mode. */ 4109 this_device->offload_enabled = 0; 4110 hpsa_get_ioaccel_drive_info(h, this_device, 4111 physdev_list, phys_dev_index, id_phys); 4112 hpsa_get_path_info(this_device, 4113 physdev_list, phys_dev_index, id_phys); 4114 } 4115 ncurrent++; 4116 break; 4117 case TYPE_TAPE: 4118 case TYPE_MEDIUM_CHANGER: 4119 case TYPE_ENCLOSURE: 4120 ncurrent++; 4121 break; 4122 case TYPE_RAID: 4123 /* Only present the Smartarray HBA as a RAID controller. 4124 * If it's a RAID controller other than the HBA itself 4125 * (an external RAID controller, MSA500 or similar) 4126 * don't present it. 4127 */ 4128 if (!is_hba_lunid(lunaddrbytes)) 4129 break; 4130 ncurrent++; 4131 break; 4132 default: 4133 break; 4134 } 4135 if (ncurrent >= HPSA_MAX_DEVICES) 4136 break; 4137 } 4138 4139 if (h->sas_host == NULL) { 4140 int rc = 0; 4141 4142 rc = hpsa_add_sas_host(h); 4143 if (rc) { 4144 dev_warn(&h->pdev->dev, 4145 "Could not add sas host %d\n", rc); 4146 goto out; 4147 } 4148 } 4149 4150 adjust_hpsa_scsi_table(h, currentsd, ncurrent); 4151out: 4152 kfree(tmpdevice); 4153 for (i = 0; i < ndev_allocated; i++) 4154 kfree(currentsd[i]); 4155 kfree(currentsd); 4156 kfree(physdev_list); 4157 kfree(logdev_list); 4158 kfree(id_ctlr); 4159 kfree(id_phys); 4160} 4161 4162static void hpsa_set_sg_descriptor(struct SGDescriptor *desc, 4163 struct scatterlist *sg) 4164{ 4165 u64 addr64 = (u64) sg_dma_address(sg); 4166 unsigned int len = sg_dma_len(sg); 4167 4168 desc->Addr = cpu_to_le64(addr64); 4169 desc->Len = cpu_to_le32(len); 4170 desc->Ext = 0; 4171} 4172 4173/* 4174 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci 4175 * dma mapping and fills in the scatter gather entries of the 4176 * hpsa command, cp. 4177 */ 4178static int hpsa_scatter_gather(struct ctlr_info *h, 4179 struct CommandList *cp, 4180 struct scsi_cmnd *cmd) 4181{ 4182 struct scatterlist *sg; 4183 int use_sg, i, sg_limit, chained, last_sg; 4184 struct SGDescriptor *curr_sg; 4185 4186 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4187 4188 use_sg = scsi_dma_map(cmd); 4189 if (use_sg < 0) 4190 return use_sg; 4191 4192 if (!use_sg) 4193 goto sglist_finished; 4194 4195 /* 4196 * If the number of entries is greater than the max for a single list, 4197 * then we have a chained list; we will set up all but one entry in the 4198 * first list (the last entry is saved for link information); 4199 * otherwise, we don't have a chained list and we'll set up at each of 4200 * the entries in the one list. 4201 */ 4202 curr_sg = cp->SG; 4203 chained = use_sg > h->max_cmd_sg_entries; 4204 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg; 4205 last_sg = scsi_sg_count(cmd) - 1; 4206 scsi_for_each_sg(cmd, sg, sg_limit, i) { 4207 hpsa_set_sg_descriptor(curr_sg, sg); 4208 curr_sg++; 4209 } 4210 4211 if (chained) { 4212 /* 4213 * Continue with the chained list. Set curr_sg to the chained 4214 * list. Modify the limit to the total count less the entries 4215 * we've already set up. Resume the scan at the list entry 4216 * where the previous loop left off. 4217 */ 4218 curr_sg = h->cmd_sg_list[cp->cmdindex]; 4219 sg_limit = use_sg - sg_limit; 4220 for_each_sg(sg, sg, sg_limit, i) { 4221 hpsa_set_sg_descriptor(curr_sg, sg); 4222 curr_sg++; 4223 } 4224 } 4225 4226 /* Back the pointer up to the last entry and mark it as "last". */ 4227 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST); 4228 4229 if (use_sg + chained > h->maxSG) 4230 h->maxSG = use_sg + chained; 4231 4232 if (chained) { 4233 cp->Header.SGList = h->max_cmd_sg_entries; 4234 cp->Header.SGTotal = cpu_to_le16(use_sg + 1); 4235 if (hpsa_map_sg_chain_block(h, cp)) { 4236 scsi_dma_unmap(cmd); 4237 return -1; 4238 } 4239 return 0; 4240 } 4241 4242sglist_finished: 4243 4244 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ 4245 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */ 4246 return 0; 4247} 4248 4249#define IO_ACCEL_INELIGIBLE (1) 4250static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len) 4251{ 4252 int is_write = 0; 4253 u32 block; 4254 u32 block_cnt; 4255 4256 /* Perform some CDB fixups if needed using 10 byte reads/writes only */ 4257 switch (cdb[0]) { 4258 case WRITE_6: 4259 case WRITE_12: 4260 is_write = 1; 4261 case READ_6: 4262 case READ_12: 4263 if (*cdb_len == 6) { 4264 block = get_unaligned_be16(&cdb[2]); 4265 block_cnt = cdb[4]; 4266 if (block_cnt == 0) 4267 block_cnt = 256; 4268 } else { 4269 BUG_ON(*cdb_len != 12); 4270 block = get_unaligned_be32(&cdb[2]); 4271 block_cnt = get_unaligned_be32(&cdb[6]); 4272 } 4273 if (block_cnt > 0xffff) 4274 return IO_ACCEL_INELIGIBLE; 4275 4276 cdb[0] = is_write ? WRITE_10 : READ_10; 4277 cdb[1] = 0; 4278 cdb[2] = (u8) (block >> 24); 4279 cdb[3] = (u8) (block >> 16); 4280 cdb[4] = (u8) (block >> 8); 4281 cdb[5] = (u8) (block); 4282 cdb[6] = 0; 4283 cdb[7] = (u8) (block_cnt >> 8); 4284 cdb[8] = (u8) (block_cnt); 4285 cdb[9] = 0; 4286 *cdb_len = 10; 4287 break; 4288 } 4289 return 0; 4290} 4291 4292static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h, 4293 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4294 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4295{ 4296 struct scsi_cmnd *cmd = c->scsi_cmd; 4297 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; 4298 unsigned int len; 4299 unsigned int total_len = 0; 4300 struct scatterlist *sg; 4301 u64 addr64; 4302 int use_sg, i; 4303 struct SGDescriptor *curr_sg; 4304 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE; 4305 4306 /* TODO: implement chaining support */ 4307 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) { 4308 atomic_dec(&phys_disk->ioaccel_cmds_out); 4309 return IO_ACCEL_INELIGIBLE; 4310 } 4311 4312 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX); 4313 4314 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4315 atomic_dec(&phys_disk->ioaccel_cmds_out); 4316 return IO_ACCEL_INELIGIBLE; 4317 } 4318 4319 c->cmd_type = CMD_IOACCEL1; 4320 4321 /* Adjust the DMA address to point to the accelerated command buffer */ 4322 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle + 4323 (c->cmdindex * sizeof(*cp)); 4324 BUG_ON(c->busaddr & 0x0000007F); 4325 4326 use_sg = scsi_dma_map(cmd); 4327 if (use_sg < 0) { 4328 atomic_dec(&phys_disk->ioaccel_cmds_out); 4329 return use_sg; 4330 } 4331 4332 if (use_sg) { 4333 curr_sg = cp->SG; 4334 scsi_for_each_sg(cmd, sg, use_sg, i) { 4335 addr64 = (u64) sg_dma_address(sg); 4336 len = sg_dma_len(sg); 4337 total_len += len; 4338 curr_sg->Addr = cpu_to_le64(addr64); 4339 curr_sg->Len = cpu_to_le32(len); 4340 curr_sg->Ext = cpu_to_le32(0); 4341 curr_sg++; 4342 } 4343 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST); 4344 4345 switch (cmd->sc_data_direction) { 4346 case DMA_TO_DEVICE: 4347 control |= IOACCEL1_CONTROL_DATA_OUT; 4348 break; 4349 case DMA_FROM_DEVICE: 4350 control |= IOACCEL1_CONTROL_DATA_IN; 4351 break; 4352 case DMA_NONE: 4353 control |= IOACCEL1_CONTROL_NODATAXFER; 4354 break; 4355 default: 4356 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4357 cmd->sc_data_direction); 4358 BUG(); 4359 break; 4360 } 4361 } else { 4362 control |= IOACCEL1_CONTROL_NODATAXFER; 4363 } 4364 4365 c->Header.SGList = use_sg; 4366 /* Fill out the command structure to submit */ 4367 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF); 4368 cp->transfer_len = cpu_to_le32(total_len); 4369 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ | 4370 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK)); 4371 cp->control = cpu_to_le32(control); 4372 memcpy(cp->CDB, cdb, cdb_len); 4373 memcpy(cp->CISS_LUN, scsi3addr, 8); 4374 /* Tag was already set at init time. */ 4375 enqueue_cmd_and_start_io(h, c); 4376 return 0; 4377} 4378 4379/* 4380 * Queue a command directly to a device behind the controller using the 4381 * I/O accelerator path. 4382 */ 4383static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h, 4384 struct CommandList *c) 4385{ 4386 struct scsi_cmnd *cmd = c->scsi_cmd; 4387 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4388 4389 c->phys_disk = dev; 4390 4391 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle, 4392 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev); 4393} 4394 4395/* 4396 * Set encryption parameters for the ioaccel2 request 4397 */ 4398static void set_encrypt_ioaccel2(struct ctlr_info *h, 4399 struct CommandList *c, struct io_accel2_cmd *cp) 4400{ 4401 struct scsi_cmnd *cmd = c->scsi_cmd; 4402 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4403 struct raid_map_data *map = &dev->raid_map; 4404 u64 first_block; 4405 4406 /* Are we doing encryption on this device */ 4407 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON)) 4408 return; 4409 /* Set the data encryption key index. */ 4410 cp->dekindex = map->dekindex; 4411 4412 /* Set the encryption enable flag, encoded into direction field. */ 4413 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK; 4414 4415 /* Set encryption tweak values based on logical block address 4416 * If block size is 512, tweak value is LBA. 4417 * For other block sizes, tweak is (LBA * block size)/ 512) 4418 */ 4419 switch (cmd->cmnd[0]) { 4420 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */ 4421 case WRITE_6: 4422 case READ_6: 4423 first_block = get_unaligned_be16(&cmd->cmnd[2]); 4424 break; 4425 case WRITE_10: 4426 case READ_10: 4427 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */ 4428 case WRITE_12: 4429 case READ_12: 4430 first_block = get_unaligned_be32(&cmd->cmnd[2]); 4431 break; 4432 case WRITE_16: 4433 case READ_16: 4434 first_block = get_unaligned_be64(&cmd->cmnd[2]); 4435 break; 4436 default: 4437 dev_err(&h->pdev->dev, 4438 "ERROR: %s: size (0x%x) not supported for encryption\n", 4439 __func__, cmd->cmnd[0]); 4440 BUG(); 4441 break; 4442 } 4443 4444 if (le32_to_cpu(map->volume_blk_size) != 512) 4445 first_block = first_block * 4446 le32_to_cpu(map->volume_blk_size)/512; 4447 4448 cp->tweak_lower = cpu_to_le32(first_block); 4449 cp->tweak_upper = cpu_to_le32(first_block >> 32); 4450} 4451 4452static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, 4453 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4454 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4455{ 4456 struct scsi_cmnd *cmd = c->scsi_cmd; 4457 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; 4458 struct ioaccel2_sg_element *curr_sg; 4459 int use_sg, i; 4460 struct scatterlist *sg; 4461 u64 addr64; 4462 u32 len; 4463 u32 total_len = 0; 4464 4465 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 4466 4467 if (fixup_ioaccel_cdb(cdb, &cdb_len)) { 4468 atomic_dec(&phys_disk->ioaccel_cmds_out); 4469 return IO_ACCEL_INELIGIBLE; 4470 } 4471 4472 c->cmd_type = CMD_IOACCEL2; 4473 /* Adjust the DMA address to point to the accelerated command buffer */ 4474 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + 4475 (c->cmdindex * sizeof(*cp)); 4476 BUG_ON(c->busaddr & 0x0000007F); 4477 4478 memset(cp, 0, sizeof(*cp)); 4479 cp->IU_type = IOACCEL2_IU_TYPE; 4480 4481 use_sg = scsi_dma_map(cmd); 4482 if (use_sg < 0) { 4483 atomic_dec(&phys_disk->ioaccel_cmds_out); 4484 return use_sg; 4485 } 4486 4487 if (use_sg) { 4488 curr_sg = cp->sg; 4489 if (use_sg > h->ioaccel_maxsg) { 4490 addr64 = le64_to_cpu( 4491 h->ioaccel2_cmd_sg_list[c->cmdindex]->address); 4492 curr_sg->address = cpu_to_le64(addr64); 4493 curr_sg->length = 0; 4494 curr_sg->reserved[0] = 0; 4495 curr_sg->reserved[1] = 0; 4496 curr_sg->reserved[2] = 0; 4497 curr_sg->chain_indicator = 0x80; 4498 4499 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex]; 4500 } 4501 scsi_for_each_sg(cmd, sg, use_sg, i) { 4502 addr64 = (u64) sg_dma_address(sg); 4503 len = sg_dma_len(sg); 4504 total_len += len; 4505 curr_sg->address = cpu_to_le64(addr64); 4506 curr_sg->length = cpu_to_le32(len); 4507 curr_sg->reserved[0] = 0; 4508 curr_sg->reserved[1] = 0; 4509 curr_sg->reserved[2] = 0; 4510 curr_sg->chain_indicator = 0; 4511 curr_sg++; 4512 } 4513 4514 switch (cmd->sc_data_direction) { 4515 case DMA_TO_DEVICE: 4516 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4517 cp->direction |= IOACCEL2_DIR_DATA_OUT; 4518 break; 4519 case DMA_FROM_DEVICE: 4520 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4521 cp->direction |= IOACCEL2_DIR_DATA_IN; 4522 break; 4523 case DMA_NONE: 4524 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4525 cp->direction |= IOACCEL2_DIR_NO_DATA; 4526 break; 4527 default: 4528 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4529 cmd->sc_data_direction); 4530 BUG(); 4531 break; 4532 } 4533 } else { 4534 cp->direction &= ~IOACCEL2_DIRECTION_MASK; 4535 cp->direction |= IOACCEL2_DIR_NO_DATA; 4536 } 4537 4538 /* Set encryption parameters, if necessary */ 4539 set_encrypt_ioaccel2(h, c, cp); 4540 4541 cp->scsi_nexus = cpu_to_le32(ioaccel_handle); 4542 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT); 4543 memcpy(cp->cdb, cdb, sizeof(cp->cdb)); 4544 4545 cp->data_len = cpu_to_le32(total_len); 4546 cp->err_ptr = cpu_to_le64(c->busaddr + 4547 offsetof(struct io_accel2_cmd, error_data)); 4548 cp->err_len = cpu_to_le32(sizeof(cp->error_data)); 4549 4550 /* fill in sg elements */ 4551 if (use_sg > h->ioaccel_maxsg) { 4552 cp->sg_count = 1; 4553 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0])); 4554 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) { 4555 atomic_dec(&phys_disk->ioaccel_cmds_out); 4556 scsi_dma_unmap(cmd); 4557 return -1; 4558 } 4559 } else 4560 cp->sg_count = (u8) use_sg; 4561 4562 enqueue_cmd_and_start_io(h, c); 4563 return 0; 4564} 4565 4566/* 4567 * Queue a command to the correct I/O accelerator path. 4568 */ 4569static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, 4570 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, 4571 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk) 4572{ 4573 /* Try to honor the device's queue depth */ 4574 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) > 4575 phys_disk->queue_depth) { 4576 atomic_dec(&phys_disk->ioaccel_cmds_out); 4577 return IO_ACCEL_INELIGIBLE; 4578 } 4579 if (h->transMethod & CFGTBL_Trans_io_accel1) 4580 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle, 4581 cdb, cdb_len, scsi3addr, 4582 phys_disk); 4583 else 4584 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle, 4585 cdb, cdb_len, scsi3addr, 4586 phys_disk); 4587} 4588 4589static void raid_map_helper(struct raid_map_data *map, 4590 int offload_to_mirror, u32 *map_index, u32 *current_group) 4591{ 4592 if (offload_to_mirror == 0) { 4593 /* use physical disk in the first mirrored group. */ 4594 *map_index %= le16_to_cpu(map->data_disks_per_row); 4595 return; 4596 } 4597 do { 4598 /* determine mirror group that *map_index indicates */ 4599 *current_group = *map_index / 4600 le16_to_cpu(map->data_disks_per_row); 4601 if (offload_to_mirror == *current_group) 4602 continue; 4603 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) { 4604 /* select map index from next group */ 4605 *map_index += le16_to_cpu(map->data_disks_per_row); 4606 (*current_group)++; 4607 } else { 4608 /* select map index from first group */ 4609 *map_index %= le16_to_cpu(map->data_disks_per_row); 4610 *current_group = 0; 4611 } 4612 } while (offload_to_mirror != *current_group); 4613} 4614 4615/* 4616 * Attempt to perform offload RAID mapping for a logical volume I/O. 4617 */ 4618static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, 4619 struct CommandList *c) 4620{ 4621 struct scsi_cmnd *cmd = c->scsi_cmd; 4622 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 4623 struct raid_map_data *map = &dev->raid_map; 4624 struct raid_map_disk_data *dd = &map->data[0]; 4625 int is_write = 0; 4626 u32 map_index; 4627 u64 first_block, last_block; 4628 u32 block_cnt; 4629 u32 blocks_per_row; 4630 u64 first_row, last_row; 4631 u32 first_row_offset, last_row_offset; 4632 u32 first_column, last_column; 4633 u64 r0_first_row, r0_last_row; 4634 u32 r5or6_blocks_per_row; 4635 u64 r5or6_first_row, r5or6_last_row; 4636 u32 r5or6_first_row_offset, r5or6_last_row_offset; 4637 u32 r5or6_first_column, r5or6_last_column; 4638 u32 total_disks_per_row; 4639 u32 stripesize; 4640 u32 first_group, last_group, current_group; 4641 u32 map_row; 4642 u32 disk_handle; 4643 u64 disk_block; 4644 u32 disk_block_cnt; 4645 u8 cdb[16]; 4646 u8 cdb_len; 4647 u16 strip_size; 4648#if BITS_PER_LONG == 32 4649 u64 tmpdiv; 4650#endif 4651 int offload_to_mirror; 4652 4653 /* check for valid opcode, get LBA and block count */ 4654 switch (cmd->cmnd[0]) { 4655 case WRITE_6: 4656 is_write = 1; 4657 case READ_6: 4658 first_block = get_unaligned_be16(&cmd->cmnd[2]); 4659 block_cnt = cmd->cmnd[4]; 4660 if (block_cnt == 0) 4661 block_cnt = 256; 4662 break; 4663 case WRITE_10: 4664 is_write = 1; 4665 case READ_10: 4666 first_block = 4667 (((u64) cmd->cmnd[2]) << 24) | 4668 (((u64) cmd->cmnd[3]) << 16) | 4669 (((u64) cmd->cmnd[4]) << 8) | 4670 cmd->cmnd[5]; 4671 block_cnt = 4672 (((u32) cmd->cmnd[7]) << 8) | 4673 cmd->cmnd[8]; 4674 break; 4675 case WRITE_12: 4676 is_write = 1; 4677 case READ_12: 4678 first_block = 4679 (((u64) cmd->cmnd[2]) << 24) | 4680 (((u64) cmd->cmnd[3]) << 16) | 4681 (((u64) cmd->cmnd[4]) << 8) | 4682 cmd->cmnd[5]; 4683 block_cnt = 4684 (((u32) cmd->cmnd[6]) << 24) | 4685 (((u32) cmd->cmnd[7]) << 16) | 4686 (((u32) cmd->cmnd[8]) << 8) | 4687 cmd->cmnd[9]; 4688 break; 4689 case WRITE_16: 4690 is_write = 1; 4691 case READ_16: 4692 first_block = 4693 (((u64) cmd->cmnd[2]) << 56) | 4694 (((u64) cmd->cmnd[3]) << 48) | 4695 (((u64) cmd->cmnd[4]) << 40) | 4696 (((u64) cmd->cmnd[5]) << 32) | 4697 (((u64) cmd->cmnd[6]) << 24) | 4698 (((u64) cmd->cmnd[7]) << 16) | 4699 (((u64) cmd->cmnd[8]) << 8) | 4700 cmd->cmnd[9]; 4701 block_cnt = 4702 (((u32) cmd->cmnd[10]) << 24) | 4703 (((u32) cmd->cmnd[11]) << 16) | 4704 (((u32) cmd->cmnd[12]) << 8) | 4705 cmd->cmnd[13]; 4706 break; 4707 default: 4708 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */ 4709 } 4710 last_block = first_block + block_cnt - 1; 4711 4712 /* check for write to non-RAID-0 */ 4713 if (is_write && dev->raid_level != 0) 4714 return IO_ACCEL_INELIGIBLE; 4715 4716 /* check for invalid block or wraparound */ 4717 if (last_block >= le64_to_cpu(map->volume_blk_cnt) || 4718 last_block < first_block) 4719 return IO_ACCEL_INELIGIBLE; 4720 4721 /* calculate stripe information for the request */ 4722 blocks_per_row = le16_to_cpu(map->data_disks_per_row) * 4723 le16_to_cpu(map->strip_size); 4724 strip_size = le16_to_cpu(map->strip_size); 4725#if BITS_PER_LONG == 32 4726 tmpdiv = first_block; 4727 (void) do_div(tmpdiv, blocks_per_row); 4728 first_row = tmpdiv; 4729 tmpdiv = last_block; 4730 (void) do_div(tmpdiv, blocks_per_row); 4731 last_row = tmpdiv; 4732 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 4733 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 4734 tmpdiv = first_row_offset; 4735 (void) do_div(tmpdiv, strip_size); 4736 first_column = tmpdiv; 4737 tmpdiv = last_row_offset; 4738 (void) do_div(tmpdiv, strip_size); 4739 last_column = tmpdiv; 4740#else 4741 first_row = first_block / blocks_per_row; 4742 last_row = last_block / blocks_per_row; 4743 first_row_offset = (u32) (first_block - (first_row * blocks_per_row)); 4744 last_row_offset = (u32) (last_block - (last_row * blocks_per_row)); 4745 first_column = first_row_offset / strip_size; 4746 last_column = last_row_offset / strip_size; 4747#endif 4748 4749 /* if this isn't a single row/column then give to the controller */ 4750 if ((first_row != last_row) || (first_column != last_column)) 4751 return IO_ACCEL_INELIGIBLE; 4752 4753 /* proceeding with driver mapping */ 4754 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) + 4755 le16_to_cpu(map->metadata_disks_per_row); 4756 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 4757 le16_to_cpu(map->row_cnt); 4758 map_index = (map_row * total_disks_per_row) + first_column; 4759 4760 switch (dev->raid_level) { 4761 case HPSA_RAID_0: 4762 break; /* nothing special to do */ 4763 case HPSA_RAID_1: 4764 /* Handles load balance across RAID 1 members. 4765 * (2-drive R1 and R10 with even # of drives.) 4766 * Appropriate for SSDs, not optimal for HDDs 4767 */ 4768 BUG_ON(le16_to_cpu(map->layout_map_count) != 2); 4769 if (dev->offload_to_mirror) 4770 map_index += le16_to_cpu(map->data_disks_per_row); 4771 dev->offload_to_mirror = !dev->offload_to_mirror; 4772 break; 4773 case HPSA_RAID_ADM: 4774 /* Handles N-way mirrors (R1-ADM) 4775 * and R10 with # of drives divisible by 3.) 4776 */ 4777 BUG_ON(le16_to_cpu(map->layout_map_count) != 3); 4778 4779 offload_to_mirror = dev->offload_to_mirror; 4780 raid_map_helper(map, offload_to_mirror, 4781 &map_index, ¤t_group); 4782 /* set mirror group to use next time */ 4783 offload_to_mirror = 4784 (offload_to_mirror >= 4785 le16_to_cpu(map->layout_map_count) - 1) 4786 ? 0 : offload_to_mirror + 1; 4787 dev->offload_to_mirror = offload_to_mirror; 4788 /* Avoid direct use of dev->offload_to_mirror within this 4789 * function since multiple threads might simultaneously 4790 * increment it beyond the range of dev->layout_map_count -1. 4791 */ 4792 break; 4793 case HPSA_RAID_5: 4794 case HPSA_RAID_6: 4795 if (le16_to_cpu(map->layout_map_count) <= 1) 4796 break; 4797 4798 /* Verify first and last block are in same RAID group */ 4799 r5or6_blocks_per_row = 4800 le16_to_cpu(map->strip_size) * 4801 le16_to_cpu(map->data_disks_per_row); 4802 BUG_ON(r5or6_blocks_per_row == 0); 4803 stripesize = r5or6_blocks_per_row * 4804 le16_to_cpu(map->layout_map_count); 4805#if BITS_PER_LONG == 32 4806 tmpdiv = first_block; 4807 first_group = do_div(tmpdiv, stripesize); 4808 tmpdiv = first_group; 4809 (void) do_div(tmpdiv, r5or6_blocks_per_row); 4810 first_group = tmpdiv; 4811 tmpdiv = last_block; 4812 last_group = do_div(tmpdiv, stripesize); 4813 tmpdiv = last_group; 4814 (void) do_div(tmpdiv, r5or6_blocks_per_row); 4815 last_group = tmpdiv; 4816#else 4817 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 4818 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 4819#endif 4820 if (first_group != last_group) 4821 return IO_ACCEL_INELIGIBLE; 4822 4823 /* Verify request is in a single row of RAID 5/6 */ 4824#if BITS_PER_LONG == 32 4825 tmpdiv = first_block; 4826 (void) do_div(tmpdiv, stripesize); 4827 first_row = r5or6_first_row = r0_first_row = tmpdiv; 4828 tmpdiv = last_block; 4829 (void) do_div(tmpdiv, stripesize); 4830 r5or6_last_row = r0_last_row = tmpdiv; 4831#else 4832 first_row = r5or6_first_row = r0_first_row = 4833 first_block / stripesize; 4834 r5or6_last_row = r0_last_row = last_block / stripesize; 4835#endif 4836 if (r5or6_first_row != r5or6_last_row) 4837 return IO_ACCEL_INELIGIBLE; 4838 4839 4840 /* Verify request is in a single column */ 4841#if BITS_PER_LONG == 32 4842 tmpdiv = first_block; 4843 first_row_offset = do_div(tmpdiv, stripesize); 4844 tmpdiv = first_row_offset; 4845 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row); 4846 r5or6_first_row_offset = first_row_offset; 4847 tmpdiv = last_block; 4848 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 4849 tmpdiv = r5or6_last_row_offset; 4850 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 4851 tmpdiv = r5or6_first_row_offset; 4852 (void) do_div(tmpdiv, map->strip_size); 4853 first_column = r5or6_first_column = tmpdiv; 4854 tmpdiv = r5or6_last_row_offset; 4855 (void) do_div(tmpdiv, map->strip_size); 4856 r5or6_last_column = tmpdiv; 4857#else 4858 first_row_offset = r5or6_first_row_offset = 4859 (u32)((first_block % stripesize) % 4860 r5or6_blocks_per_row); 4861 4862 r5or6_last_row_offset = 4863 (u32)((last_block % stripesize) % 4864 r5or6_blocks_per_row); 4865 4866 first_column = r5or6_first_column = 4867 r5or6_first_row_offset / le16_to_cpu(map->strip_size); 4868 r5or6_last_column = 4869 r5or6_last_row_offset / le16_to_cpu(map->strip_size); 4870#endif 4871 if (r5or6_first_column != r5or6_last_column) 4872 return IO_ACCEL_INELIGIBLE; 4873 4874 /* Request is eligible */ 4875 map_row = ((u32)(first_row >> map->parity_rotation_shift)) % 4876 le16_to_cpu(map->row_cnt); 4877 4878 map_index = (first_group * 4879 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) + 4880 (map_row * total_disks_per_row) + first_column; 4881 break; 4882 default: 4883 return IO_ACCEL_INELIGIBLE; 4884 } 4885 4886 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES)) 4887 return IO_ACCEL_INELIGIBLE; 4888 4889 c->phys_disk = dev->phys_disk[map_index]; 4890 4891 disk_handle = dd[map_index].ioaccel_handle; 4892 disk_block = le64_to_cpu(map->disk_starting_blk) + 4893 first_row * le16_to_cpu(map->strip_size) + 4894 (first_row_offset - first_column * 4895 le16_to_cpu(map->strip_size)); 4896 disk_block_cnt = block_cnt; 4897 4898 /* handle differing logical/physical block sizes */ 4899 if (map->phys_blk_shift) { 4900 disk_block <<= map->phys_blk_shift; 4901 disk_block_cnt <<= map->phys_blk_shift; 4902 } 4903 BUG_ON(disk_block_cnt > 0xffff); 4904 4905 /* build the new CDB for the physical disk I/O */ 4906 if (disk_block > 0xffffffff) { 4907 cdb[0] = is_write ? WRITE_16 : READ_16; 4908 cdb[1] = 0; 4909 cdb[2] = (u8) (disk_block >> 56); 4910 cdb[3] = (u8) (disk_block >> 48); 4911 cdb[4] = (u8) (disk_block >> 40); 4912 cdb[5] = (u8) (disk_block >> 32); 4913 cdb[6] = (u8) (disk_block >> 24); 4914 cdb[7] = (u8) (disk_block >> 16); 4915 cdb[8] = (u8) (disk_block >> 8); 4916 cdb[9] = (u8) (disk_block); 4917 cdb[10] = (u8) (disk_block_cnt >> 24); 4918 cdb[11] = (u8) (disk_block_cnt >> 16); 4919 cdb[12] = (u8) (disk_block_cnt >> 8); 4920 cdb[13] = (u8) (disk_block_cnt); 4921 cdb[14] = 0; 4922 cdb[15] = 0; 4923 cdb_len = 16; 4924 } else { 4925 cdb[0] = is_write ? WRITE_10 : READ_10; 4926 cdb[1] = 0; 4927 cdb[2] = (u8) (disk_block >> 24); 4928 cdb[3] = (u8) (disk_block >> 16); 4929 cdb[4] = (u8) (disk_block >> 8); 4930 cdb[5] = (u8) (disk_block); 4931 cdb[6] = 0; 4932 cdb[7] = (u8) (disk_block_cnt >> 8); 4933 cdb[8] = (u8) (disk_block_cnt); 4934 cdb[9] = 0; 4935 cdb_len = 10; 4936 } 4937 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len, 4938 dev->scsi3addr, 4939 dev->phys_disk[map_index]); 4940} 4941 4942/* 4943 * Submit commands down the "normal" RAID stack path 4944 * All callers to hpsa_ciss_submit must check lockup_detected 4945 * beforehand, before (opt.) and after calling cmd_alloc 4946 */ 4947static int hpsa_ciss_submit(struct ctlr_info *h, 4948 struct CommandList *c, struct scsi_cmnd *cmd, 4949 unsigned char scsi3addr[]) 4950{ 4951 cmd->host_scribble = (unsigned char *) c; 4952 c->cmd_type = CMD_SCSI; 4953 c->scsi_cmd = cmd; 4954 c->Header.ReplyQueue = 0; /* unused in simple mode */ 4955 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); 4956 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT)); 4957 4958 /* Fill in the request block... */ 4959 4960 c->Request.Timeout = 0; 4961 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); 4962 c->Request.CDBLen = cmd->cmd_len; 4963 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); 4964 switch (cmd->sc_data_direction) { 4965 case DMA_TO_DEVICE: 4966 c->Request.type_attr_dir = 4967 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE); 4968 break; 4969 case DMA_FROM_DEVICE: 4970 c->Request.type_attr_dir = 4971 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ); 4972 break; 4973 case DMA_NONE: 4974 c->Request.type_attr_dir = 4975 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE); 4976 break; 4977 case DMA_BIDIRECTIONAL: 4978 /* This can happen if a buggy application does a scsi passthru 4979 * and sets both inlen and outlen to non-zero. ( see 4980 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) 4981 */ 4982 4983 c->Request.type_attr_dir = 4984 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD); 4985 /* This is technically wrong, and hpsa controllers should 4986 * reject it with CMD_INVALID, which is the most correct 4987 * response, but non-fibre backends appear to let it 4988 * slide by, and give the same results as if this field 4989 * were set correctly. Either way is acceptable for 4990 * our purposes here. 4991 */ 4992 4993 break; 4994 4995 default: 4996 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 4997 cmd->sc_data_direction); 4998 BUG(); 4999 break; 5000 } 5001 5002 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ 5003 hpsa_cmd_resolve_and_free(h, c); 5004 return SCSI_MLQUEUE_HOST_BUSY; 5005 } 5006 enqueue_cmd_and_start_io(h, c); 5007 /* the cmd'll come back via intr handler in complete_scsi_command() */ 5008 return 0; 5009} 5010 5011static void hpsa_cmd_init(struct ctlr_info *h, int index, 5012 struct CommandList *c) 5013{ 5014 dma_addr_t cmd_dma_handle, err_dma_handle; 5015 5016 /* Zero out all of commandlist except the last field, refcount */ 5017 memset(c, 0, offsetof(struct CommandList, refcount)); 5018 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); 5019 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5020 c->err_info = h->errinfo_pool + index; 5021 memset(c->err_info, 0, sizeof(*c->err_info)); 5022 err_dma_handle = h->errinfo_pool_dhandle 5023 + index * sizeof(*c->err_info); 5024 c->cmdindex = index; 5025 c->busaddr = (u32) cmd_dma_handle; 5026 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); 5027 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); 5028 c->h = h; 5029 c->scsi_cmd = SCSI_CMD_IDLE; 5030} 5031 5032static void hpsa_preinitialize_commands(struct ctlr_info *h) 5033{ 5034 int i; 5035 5036 for (i = 0; i < h->nr_cmds; i++) { 5037 struct CommandList *c = h->cmd_pool + i; 5038 5039 hpsa_cmd_init(h, i, c); 5040 atomic_set(&c->refcount, 0); 5041 } 5042} 5043 5044static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index, 5045 struct CommandList *c) 5046{ 5047 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); 5048 5049 BUG_ON(c->cmdindex != index); 5050 5051 memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); 5052 memset(c->err_info, 0, sizeof(*c->err_info)); 5053 c->busaddr = (u32) cmd_dma_handle; 5054} 5055 5056static int hpsa_ioaccel_submit(struct ctlr_info *h, 5057 struct CommandList *c, struct scsi_cmnd *cmd, 5058 unsigned char *scsi3addr) 5059{ 5060 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; 5061 int rc = IO_ACCEL_INELIGIBLE; 5062 5063 cmd->host_scribble = (unsigned char *) c; 5064 5065 if (dev->offload_enabled) { 5066 hpsa_cmd_init(h, c->cmdindex, c); 5067 c->cmd_type = CMD_SCSI; 5068 c->scsi_cmd = cmd; 5069 rc = hpsa_scsi_ioaccel_raid_map(h, c); 5070 if (rc < 0) /* scsi_dma_map failed. */ 5071 rc = SCSI_MLQUEUE_HOST_BUSY; 5072 } else if (dev->hba_ioaccel_enabled) { 5073 hpsa_cmd_init(h, c->cmdindex, c); 5074 c->cmd_type = CMD_SCSI; 5075 c->scsi_cmd = cmd; 5076 rc = hpsa_scsi_ioaccel_direct_map(h, c); 5077 if (rc < 0) /* scsi_dma_map failed. */ 5078 rc = SCSI_MLQUEUE_HOST_BUSY; 5079 } 5080 return rc; 5081} 5082 5083static void hpsa_command_resubmit_worker(struct work_struct *work) 5084{ 5085 struct scsi_cmnd *cmd; 5086 struct hpsa_scsi_dev_t *dev; 5087 struct CommandList *c = container_of(work, struct CommandList, work); 5088 5089 cmd = c->scsi_cmd; 5090 dev = cmd->device->hostdata; 5091 if (!dev) { 5092 cmd->result = DID_NO_CONNECT << 16; 5093 return hpsa_cmd_free_and_done(c->h, c, cmd); 5094 } 5095 if (c->reset_pending) 5096 return hpsa_cmd_resolve_and_free(c->h, c); 5097 if (c->abort_pending) 5098 return hpsa_cmd_abort_and_free(c->h, c, cmd); 5099 if (c->cmd_type == CMD_IOACCEL2) { 5100 struct ctlr_info *h = c->h; 5101 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 5102 int rc; 5103 5104 if (c2->error_data.serv_response == 5105 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) { 5106 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr); 5107 if (rc == 0) 5108 return; 5109 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5110 /* 5111 * If we get here, it means dma mapping failed. 5112 * Try again via scsi mid layer, which will 5113 * then get SCSI_MLQUEUE_HOST_BUSY. 5114 */ 5115 cmd->result = DID_IMM_RETRY << 16; 5116 return hpsa_cmd_free_and_done(h, c, cmd); 5117 } 5118 /* else, fall thru and resubmit down CISS path */ 5119 } 5120 } 5121 hpsa_cmd_partial_init(c->h, c->cmdindex, c); 5122 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) { 5123 /* 5124 * If we get here, it means dma mapping failed. Try 5125 * again via scsi mid layer, which will then get 5126 * SCSI_MLQUEUE_HOST_BUSY. 5127 * 5128 * hpsa_ciss_submit will have already freed c 5129 * if it encountered a dma mapping failure. 5130 */ 5131 cmd->result = DID_IMM_RETRY << 16; 5132 cmd->scsi_done(cmd); 5133 } 5134} 5135 5136/* Running in struct Scsi_Host->host_lock less mode */ 5137static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) 5138{ 5139 struct ctlr_info *h; 5140 struct hpsa_scsi_dev_t *dev; 5141 unsigned char scsi3addr[8]; 5142 struct CommandList *c; 5143 int rc = 0; 5144 5145 /* Get the ptr to our adapter structure out of cmd->host. */ 5146 h = sdev_to_hba(cmd->device); 5147 5148 BUG_ON(cmd->request->tag < 0); 5149 5150 dev = cmd->device->hostdata; 5151 if (!dev) { 5152 cmd->result = DID_NO_CONNECT << 16; 5153 cmd->scsi_done(cmd); 5154 return 0; 5155 } 5156 5157 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); 5158 5159 if (unlikely(lockup_detected(h))) { 5160 cmd->result = DID_NO_CONNECT << 16; 5161 cmd->scsi_done(cmd); 5162 return 0; 5163 } 5164 c = cmd_tagged_alloc(h, cmd); 5165 5166 /* 5167 * Call alternate submit routine for I/O accelerated commands. 5168 * Retries always go down the normal I/O path. 5169 */ 5170 if (likely(cmd->retries == 0 && 5171 cmd->request->cmd_type == REQ_TYPE_FS && 5172 h->acciopath_status)) { 5173 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr); 5174 if (rc == 0) 5175 return 0; 5176 if (rc == SCSI_MLQUEUE_HOST_BUSY) { 5177 hpsa_cmd_resolve_and_free(h, c); 5178 return SCSI_MLQUEUE_HOST_BUSY; 5179 } 5180 } 5181 return hpsa_ciss_submit(h, c, cmd, scsi3addr); 5182} 5183 5184static void hpsa_scan_complete(struct ctlr_info *h) 5185{ 5186 unsigned long flags; 5187 5188 spin_lock_irqsave(&h->scan_lock, flags); 5189 h->scan_finished = 1; 5190 wake_up_all(&h->scan_wait_queue); 5191 spin_unlock_irqrestore(&h->scan_lock, flags); 5192} 5193 5194static void hpsa_scan_start(struct Scsi_Host *sh) 5195{ 5196 struct ctlr_info *h = shost_to_hba(sh); 5197 unsigned long flags; 5198 5199 /* 5200 * Don't let rescans be initiated on a controller known to be locked 5201 * up. If the controller locks up *during* a rescan, that thread is 5202 * probably hosed, but at least we can prevent new rescan threads from 5203 * piling up on a locked up controller. 5204 */ 5205 if (unlikely(lockup_detected(h))) 5206 return hpsa_scan_complete(h); 5207 5208 /* wait until any scan already in progress is finished. */ 5209 while (1) { 5210 spin_lock_irqsave(&h->scan_lock, flags); 5211 if (h->scan_finished) 5212 break; 5213 spin_unlock_irqrestore(&h->scan_lock, flags); 5214 wait_event(h->scan_wait_queue, h->scan_finished); 5215 /* Note: We don't need to worry about a race between this 5216 * thread and driver unload because the midlayer will 5217 * have incremented the reference count, so unload won't 5218 * happen if we're in here. 5219 */ 5220 } 5221 h->scan_finished = 0; /* mark scan as in progress */ 5222 spin_unlock_irqrestore(&h->scan_lock, flags); 5223 5224 if (unlikely(lockup_detected(h))) 5225 return hpsa_scan_complete(h); 5226 5227 hpsa_update_scsi_devices(h); 5228 5229 hpsa_scan_complete(h); 5230} 5231 5232static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth) 5233{ 5234 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata; 5235 5236 if (!logical_drive) 5237 return -ENODEV; 5238 5239 if (qdepth < 1) 5240 qdepth = 1; 5241 else if (qdepth > logical_drive->queue_depth) 5242 qdepth = logical_drive->queue_depth; 5243 5244 return scsi_change_queue_depth(sdev, qdepth); 5245} 5246 5247static int hpsa_scan_finished(struct Scsi_Host *sh, 5248 unsigned long elapsed_time) 5249{ 5250 struct ctlr_info *h = shost_to_hba(sh); 5251 unsigned long flags; 5252 int finished; 5253 5254 spin_lock_irqsave(&h->scan_lock, flags); 5255 finished = h->scan_finished; 5256 spin_unlock_irqrestore(&h->scan_lock, flags); 5257 return finished; 5258} 5259 5260static int hpsa_scsi_host_alloc(struct ctlr_info *h) 5261{ 5262 struct Scsi_Host *sh; 5263 5264 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); 5265 if (sh == NULL) { 5266 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n"); 5267 return -ENOMEM; 5268 } 5269 5270 sh->io_port = 0; 5271 sh->n_io_port = 0; 5272 sh->this_id = -1; 5273 sh->max_channel = 3; 5274 sh->max_cmd_len = MAX_COMMAND_SIZE; 5275 sh->max_lun = HPSA_MAX_LUN; 5276 sh->max_id = HPSA_MAX_LUN; 5277 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; 5278 sh->cmd_per_lun = sh->can_queue; 5279 sh->sg_tablesize = h->maxsgentries; 5280 sh->transportt = hpsa_sas_transport_template; 5281 sh->hostdata[0] = (unsigned long) h; 5282 sh->irq = h->intr[h->intr_mode]; 5283 sh->unique_id = sh->irq; 5284 5285 h->scsi_host = sh; 5286 return 0; 5287} 5288 5289static int hpsa_scsi_add_host(struct ctlr_info *h) 5290{ 5291 int rv; 5292 5293 rv = scsi_add_host(h->scsi_host, &h->pdev->dev); 5294 if (rv) { 5295 dev_err(&h->pdev->dev, "scsi_add_host failed\n"); 5296 return rv; 5297 } 5298 scsi_scan_host(h->scsi_host); 5299 return 0; 5300} 5301 5302/* 5303 * The block layer has already gone to the trouble of picking out a unique, 5304 * small-integer tag for this request. We use an offset from that value as 5305 * an index to select our command block. (The offset allows us to reserve the 5306 * low-numbered entries for our own uses.) 5307 */ 5308static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) 5309{ 5310 int idx = scmd->request->tag; 5311 5312 if (idx < 0) 5313 return idx; 5314 5315 /* Offset to leave space for internal cmds. */ 5316 return idx += HPSA_NRESERVED_CMDS; 5317} 5318 5319/* 5320 * Send a TEST_UNIT_READY command to the specified LUN using the specified 5321 * reply queue; returns zero if the unit is ready, and non-zero otherwise. 5322 */ 5323static int hpsa_send_test_unit_ready(struct ctlr_info *h, 5324 struct CommandList *c, unsigned char lunaddr[], 5325 int reply_queue) 5326{ 5327 int rc; 5328 5329 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ 5330 (void) fill_cmd(c, TEST_UNIT_READY, h, 5331 NULL, 0, 0, lunaddr, TYPE_CMD); 5332 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 5333 if (rc) 5334 return rc; 5335 /* no unmap needed here because no data xfer. */ 5336 5337 /* Check if the unit is already ready. */ 5338 if (c->err_info->CommandStatus == CMD_SUCCESS) 5339 return 0; 5340 5341 /* 5342 * The first command sent after reset will receive "unit attention" to 5343 * indicate that the LUN has been reset...this is actually what we're 5344 * looking for (but, success is good too). 5345 */ 5346 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 5347 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && 5348 (c->err_info->SenseInfo[2] == NO_SENSE || 5349 c->err_info->SenseInfo[2] == UNIT_ATTENTION)) 5350 return 0; 5351 5352 return 1; 5353} 5354 5355/* 5356 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary; 5357 * returns zero when the unit is ready, and non-zero when giving up. 5358 */ 5359static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h, 5360 struct CommandList *c, 5361 unsigned char lunaddr[], int reply_queue) 5362{ 5363 int rc; 5364 int count = 0; 5365 int waittime = 1; /* seconds */ 5366 5367 /* Send test unit ready until device ready, or give up. */ 5368 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) { 5369 5370 /* 5371 * Wait for a bit. do this first, because if we send 5372 * the TUR right away, the reset will just abort it. 5373 */ 5374 msleep(1000 * waittime); 5375 5376 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue); 5377 if (!rc) 5378 break; 5379 5380 /* Increase wait time with each try, up to a point. */ 5381 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) 5382 waittime *= 2; 5383 5384 dev_warn(&h->pdev->dev, 5385 "waiting %d secs for device to become ready.\n", 5386 waittime); 5387 } 5388 5389 return rc; 5390} 5391 5392static int wait_for_device_to_become_ready(struct ctlr_info *h, 5393 unsigned char lunaddr[], 5394 int reply_queue) 5395{ 5396 int first_queue; 5397 int last_queue; 5398 int rq; 5399 int rc = 0; 5400 struct CommandList *c; 5401 5402 c = cmd_alloc(h); 5403 5404 /* 5405 * If no specific reply queue was requested, then send the TUR 5406 * repeatedly, requesting a reply on each reply queue; otherwise execute 5407 * the loop exactly once using only the specified queue. 5408 */ 5409 if (reply_queue == DEFAULT_REPLY_QUEUE) { 5410 first_queue = 0; 5411 last_queue = h->nreply_queues - 1; 5412 } else { 5413 first_queue = reply_queue; 5414 last_queue = reply_queue; 5415 } 5416 5417 for (rq = first_queue; rq <= last_queue; rq++) { 5418 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq); 5419 if (rc) 5420 break; 5421 } 5422 5423 if (rc) 5424 dev_warn(&h->pdev->dev, "giving up on device.\n"); 5425 else 5426 dev_warn(&h->pdev->dev, "device is ready.\n"); 5427 5428 cmd_free(h, c); 5429 return rc; 5430} 5431 5432/* Need at least one of these error handlers to keep ../scsi/hosts.c from 5433 * complaining. Doing a host- or bus-reset can't do anything good here. 5434 */ 5435static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) 5436{ 5437 int rc; 5438 struct ctlr_info *h; 5439 struct hpsa_scsi_dev_t *dev; 5440 u8 reset_type; 5441 char msg[48]; 5442 5443 /* find the controller to which the command to be aborted was sent */ 5444 h = sdev_to_hba(scsicmd->device); 5445 if (h == NULL) /* paranoia */ 5446 return FAILED; 5447 5448 if (lockup_detected(h)) 5449 return FAILED; 5450 5451 dev = scsicmd->device->hostdata; 5452 if (!dev) { 5453 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__); 5454 return FAILED; 5455 } 5456 5457 /* if controller locked up, we can guarantee command won't complete */ 5458 if (lockup_detected(h)) { 5459 snprintf(msg, sizeof(msg), 5460 "cmd %d RESET FAILED, lockup detected", 5461 hpsa_get_cmd_index(scsicmd)); 5462 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 5463 return FAILED; 5464 } 5465 5466 /* this reset request might be the result of a lockup; check */ 5467 if (detect_controller_lockup(h)) { 5468 snprintf(msg, sizeof(msg), 5469 "cmd %d RESET FAILED, new lockup detected", 5470 hpsa_get_cmd_index(scsicmd)); 5471 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 5472 return FAILED; 5473 } 5474 5475 /* Do not attempt on controller */ 5476 if (is_hba_lunid(dev->scsi3addr)) 5477 return SUCCESS; 5478 5479 if (is_logical_dev_addr_mode(dev->scsi3addr)) 5480 reset_type = HPSA_DEVICE_RESET_MSG; 5481 else 5482 reset_type = HPSA_PHYS_TARGET_RESET; 5483 5484 sprintf(msg, "resetting %s", 5485 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical "); 5486 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 5487 5488 h->reset_in_progress = 1; 5489 5490 /* send a reset to the SCSI LUN which the command was sent to */ 5491 rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type, 5492 DEFAULT_REPLY_QUEUE); 5493 sprintf(msg, "reset %s %s", 5494 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ", 5495 rc == 0 ? "completed successfully" : "failed"); 5496 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); 5497 h->reset_in_progress = 0; 5498 return rc == 0 ? SUCCESS : FAILED; 5499} 5500 5501static void swizzle_abort_tag(u8 *tag) 5502{ 5503 u8 original_tag[8]; 5504 5505 memcpy(original_tag, tag, 8); 5506 tag[0] = original_tag[3]; 5507 tag[1] = original_tag[2]; 5508 tag[2] = original_tag[1]; 5509 tag[3] = original_tag[0]; 5510 tag[4] = original_tag[7]; 5511 tag[5] = original_tag[6]; 5512 tag[6] = original_tag[5]; 5513 tag[7] = original_tag[4]; 5514} 5515 5516static void hpsa_get_tag(struct ctlr_info *h, 5517 struct CommandList *c, __le32 *taglower, __le32 *tagupper) 5518{ 5519 u64 tag; 5520 if (c->cmd_type == CMD_IOACCEL1) { 5521 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *) 5522 &h->ioaccel_cmd_pool[c->cmdindex]; 5523 tag = le64_to_cpu(cm1->tag); 5524 *tagupper = cpu_to_le32(tag >> 32); 5525 *taglower = cpu_to_le32(tag); 5526 return; 5527 } 5528 if (c->cmd_type == CMD_IOACCEL2) { 5529 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *) 5530 &h->ioaccel2_cmd_pool[c->cmdindex]; 5531 /* upper tag not used in ioaccel2 mode */ 5532 memset(tagupper, 0, sizeof(*tagupper)); 5533 *taglower = cm2->Tag; 5534 return; 5535 } 5536 tag = le64_to_cpu(c->Header.tag); 5537 *tagupper = cpu_to_le32(tag >> 32); 5538 *taglower = cpu_to_le32(tag); 5539} 5540 5541static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, 5542 struct CommandList *abort, int reply_queue) 5543{ 5544 int rc = IO_OK; 5545 struct CommandList *c; 5546 struct ErrorInfo *ei; 5547 __le32 tagupper, taglower; 5548 5549 c = cmd_alloc(h); 5550 5551 /* fill_cmd can't fail here, no buffer to map */ 5552 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag, 5553 0, 0, scsi3addr, TYPE_MSG); 5554 if (h->needs_abort_tags_swizzled) 5555 swizzle_abort_tag(&c->Request.CDB[4]); 5556 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 5557 hpsa_get_tag(h, abort, &taglower, &tagupper); 5558 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n", 5559 __func__, tagupper, taglower); 5560 /* no unmap needed here because no data xfer. */ 5561 5562 ei = c->err_info; 5563 switch (ei->CommandStatus) { 5564 case CMD_SUCCESS: 5565 break; 5566 case CMD_TMF_STATUS: 5567 rc = hpsa_evaluate_tmf_status(h, c); 5568 break; 5569 case CMD_UNABORTABLE: /* Very common, don't make noise. */ 5570 rc = -1; 5571 break; 5572 default: 5573 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n", 5574 __func__, tagupper, taglower); 5575 hpsa_scsi_interpret_error(h, c); 5576 rc = -1; 5577 break; 5578 } 5579 cmd_free(h, c); 5580 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", 5581 __func__, tagupper, taglower); 5582 return rc; 5583} 5584 5585static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h, 5586 struct CommandList *command_to_abort, int reply_queue) 5587{ 5588 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 5589 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; 5590 struct io_accel2_cmd *c2a = 5591 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex]; 5592 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd; 5593 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata; 5594 5595 /* 5596 * We're overlaying struct hpsa_tmf_struct on top of something which 5597 * was allocated as a struct io_accel2_cmd, so we better be sure it 5598 * actually fits, and doesn't overrun the error info space. 5599 */ 5600 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) > 5601 sizeof(struct io_accel2_cmd)); 5602 BUG_ON(offsetof(struct io_accel2_cmd, error_data) < 5603 offsetof(struct hpsa_tmf_struct, error_len) + 5604 sizeof(ac->error_len)); 5605 5606 c->cmd_type = IOACCEL2_TMF; 5607 c->scsi_cmd = SCSI_CMD_BUSY; 5608 5609 /* Adjust the DMA address to point to the accelerated command buffer */ 5610 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + 5611 (c->cmdindex * sizeof(struct io_accel2_cmd)); 5612 BUG_ON(c->busaddr & 0x0000007F); 5613 5614 memset(ac, 0, sizeof(*c2)); /* yes this is correct */ 5615 ac->iu_type = IOACCEL2_IU_TMF_TYPE; 5616 ac->reply_queue = reply_queue; 5617 ac->tmf = IOACCEL2_TMF_ABORT; 5618 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle); 5619 memset(ac->lun_id, 0, sizeof(ac->lun_id)); 5620 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT); 5621 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag)); 5622 ac->error_ptr = cpu_to_le64(c->busaddr + 5623 offsetof(struct io_accel2_cmd, error_data)); 5624 ac->error_len = cpu_to_le32(sizeof(c2->error_data)); 5625} 5626 5627/* ioaccel2 path firmware cannot handle abort task requests. 5628 * Change abort requests to physical target reset, and send to the 5629 * address of the physical disk used for the ioaccel 2 command. 5630 * Return 0 on success (IO_OK) 5631 * -1 on failure 5632 */ 5633 5634static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, 5635 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue) 5636{ 5637 int rc = IO_OK; 5638 struct scsi_cmnd *scmd; /* scsi command within request being aborted */ 5639 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */ 5640 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */ 5641 unsigned char *psa = &phys_scsi3addr[0]; 5642 5643 /* Get a pointer to the hpsa logical device. */ 5644 scmd = abort->scsi_cmd; 5645 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata); 5646 if (dev == NULL) { 5647 dev_warn(&h->pdev->dev, 5648 "Cannot abort: no device pointer for command.\n"); 5649 return -1; /* not abortable */ 5650 } 5651 5652 if (h->raid_offload_debug > 0) 5653 dev_info(&h->pdev->dev, 5654 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 5655 h->scsi_host->host_no, dev->bus, dev->target, dev->lun, 5656 "Reset as abort", 5657 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3], 5658 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]); 5659 5660 if (!dev->offload_enabled) { 5661 dev_warn(&h->pdev->dev, 5662 "Can't abort: device is not operating in HP SSD Smart Path mode.\n"); 5663 return -1; /* not abortable */ 5664 } 5665 5666 /* Incoming scsi3addr is logical addr. We need physical disk addr. */ 5667 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) { 5668 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n"); 5669 return -1; /* not abortable */ 5670 } 5671 5672 /* send the reset */ 5673 if (h->raid_offload_debug > 0) 5674 dev_info(&h->pdev->dev, 5675 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 5676 psa[0], psa[1], psa[2], psa[3], 5677 psa[4], psa[5], psa[6], psa[7]); 5678 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue); 5679 if (rc != 0) { 5680 dev_warn(&h->pdev->dev, 5681 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 5682 psa[0], psa[1], psa[2], psa[3], 5683 psa[4], psa[5], psa[6], psa[7]); 5684 return rc; /* failed to reset */ 5685 } 5686 5687 /* wait for device to recover */ 5688 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) { 5689 dev_warn(&h->pdev->dev, 5690 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 5691 psa[0], psa[1], psa[2], psa[3], 5692 psa[4], psa[5], psa[6], psa[7]); 5693 return -1; /* failed to recover */ 5694 } 5695 5696 /* device recovered */ 5697 dev_info(&h->pdev->dev, 5698 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 5699 psa[0], psa[1], psa[2], psa[3], 5700 psa[4], psa[5], psa[6], psa[7]); 5701 5702 return rc; /* success */ 5703} 5704 5705static int hpsa_send_abort_ioaccel2(struct ctlr_info *h, 5706 struct CommandList *abort, int reply_queue) 5707{ 5708 int rc = IO_OK; 5709 struct CommandList *c; 5710 __le32 taglower, tagupper; 5711 struct hpsa_scsi_dev_t *dev; 5712 struct io_accel2_cmd *c2; 5713 5714 dev = abort->scsi_cmd->device->hostdata; 5715 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled) 5716 return -1; 5717 5718 c = cmd_alloc(h); 5719 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue); 5720 c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; 5721 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); 5722 hpsa_get_tag(h, abort, &taglower, &tagupper); 5723 dev_dbg(&h->pdev->dev, 5724 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n", 5725 __func__, tagupper, taglower); 5726 /* no unmap needed here because no data xfer. */ 5727 5728 dev_dbg(&h->pdev->dev, 5729 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n", 5730 __func__, tagupper, taglower, c2->error_data.serv_response); 5731 switch (c2->error_data.serv_response) { 5732 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: 5733 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: 5734 rc = 0; 5735 break; 5736 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: 5737 case IOACCEL2_SERV_RESPONSE_FAILURE: 5738 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: 5739 rc = -1; 5740 break; 5741 default: 5742 dev_warn(&h->pdev->dev, 5743 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n", 5744 __func__, tagupper, taglower, 5745 c2->error_data.serv_response); 5746 rc = -1; 5747 } 5748 cmd_free(h, c); 5749 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__, 5750 tagupper, taglower); 5751 return rc; 5752} 5753 5754static int hpsa_send_abort_both_ways(struct ctlr_info *h, 5755 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue) 5756{ 5757 /* 5758 * ioccelerator mode 2 commands should be aborted via the 5759 * accelerated path, since RAID path is unaware of these commands, 5760 * but not all underlying firmware can handle abort TMF. 5761 * Change abort to physical device reset when abort TMF is unsupported. 5762 */ 5763 if (abort->cmd_type == CMD_IOACCEL2) { 5764 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) 5765 return hpsa_send_abort_ioaccel2(h, abort, 5766 reply_queue); 5767 else 5768 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr, 5769 abort, reply_queue); 5770 } 5771 return hpsa_send_abort(h, scsi3addr, abort, reply_queue); 5772} 5773 5774/* Find out which reply queue a command was meant to return on */ 5775static int hpsa_extract_reply_queue(struct ctlr_info *h, 5776 struct CommandList *c) 5777{ 5778 if (c->cmd_type == CMD_IOACCEL2) 5779 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue; 5780 return c->Header.ReplyQueue; 5781} 5782 5783/* 5784 * Limit concurrency of abort commands to prevent 5785 * over-subscription of commands 5786 */ 5787static inline int wait_for_available_abort_cmd(struct ctlr_info *h) 5788{ 5789#define ABORT_CMD_WAIT_MSECS 5000 5790 return !wait_event_timeout(h->abort_cmd_wait_queue, 5791 atomic_dec_if_positive(&h->abort_cmds_available) >= 0, 5792 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS)); 5793} 5794 5795/* Send an abort for the specified command. 5796 * If the device and controller support it, 5797 * send a task abort request. 5798 */ 5799static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) 5800{ 5801 5802 int rc; 5803 struct ctlr_info *h; 5804 struct hpsa_scsi_dev_t *dev; 5805 struct CommandList *abort; /* pointer to command to be aborted */ 5806 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */ 5807 char msg[256]; /* For debug messaging. */ 5808 int ml = 0; 5809 __le32 tagupper, taglower; 5810 int refcount, reply_queue; 5811 5812 if (sc == NULL) 5813 return FAILED; 5814 5815 if (sc->device == NULL) 5816 return FAILED; 5817 5818 /* Find the controller of the command to be aborted */ 5819 h = sdev_to_hba(sc->device); 5820 if (h == NULL) 5821 return FAILED; 5822 5823 /* Find the device of the command to be aborted */ 5824 dev = sc->device->hostdata; 5825 if (!dev) { 5826 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n", 5827 msg); 5828 return FAILED; 5829 } 5830 5831 /* If controller locked up, we can guarantee command won't complete */ 5832 if (lockup_detected(h)) { 5833 hpsa_show_dev_msg(KERN_WARNING, h, dev, 5834 "ABORT FAILED, lockup detected"); 5835 return FAILED; 5836 } 5837 5838 /* This is a good time to check if controller lockup has occurred */ 5839 if (detect_controller_lockup(h)) { 5840 hpsa_show_dev_msg(KERN_WARNING, h, dev, 5841 "ABORT FAILED, new lockup detected"); 5842 return FAILED; 5843 } 5844 5845 /* Check that controller supports some kind of task abort */ 5846 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) && 5847 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) 5848 return FAILED; 5849 5850 memset(msg, 0, sizeof(msg)); 5851 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p", 5852 h->scsi_host->host_no, sc->device->channel, 5853 sc->device->id, sc->device->lun, 5854 "Aborting command", sc); 5855 5856 /* Get SCSI command to be aborted */ 5857 abort = (struct CommandList *) sc->host_scribble; 5858 if (abort == NULL) { 5859 /* This can happen if the command already completed. */ 5860 return SUCCESS; 5861 } 5862 refcount = atomic_inc_return(&abort->refcount); 5863 if (refcount == 1) { /* Command is done already. */ 5864 cmd_free(h, abort); 5865 return SUCCESS; 5866 } 5867 5868 /* Don't bother trying the abort if we know it won't work. */ 5869 if (abort->cmd_type != CMD_IOACCEL2 && 5870 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) { 5871 cmd_free(h, abort); 5872 return FAILED; 5873 } 5874 5875 /* 5876 * Check that we're aborting the right command. 5877 * It's possible the CommandList already completed and got re-used. 5878 */ 5879 if (abort->scsi_cmd != sc) { 5880 cmd_free(h, abort); 5881 return SUCCESS; 5882 } 5883 5884 abort->abort_pending = true; 5885 hpsa_get_tag(h, abort, &taglower, &tagupper); 5886 reply_queue = hpsa_extract_reply_queue(h, abort); 5887 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower); 5888 as = abort->scsi_cmd; 5889 if (as != NULL) 5890 ml += sprintf(msg+ml, 5891 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ", 5892 as->cmd_len, as->cmnd[0], as->cmnd[1], 5893 as->serial_number); 5894 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg); 5895 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command"); 5896 5897 /* 5898 * Command is in flight, or possibly already completed 5899 * by the firmware (but not to the scsi mid layer) but we can't 5900 * distinguish which. Send the abort down. 5901 */ 5902 if (wait_for_available_abort_cmd(h)) { 5903 dev_warn(&h->pdev->dev, 5904 "%s FAILED, timeout waiting for an abort command to become available.\n", 5905 msg); 5906 cmd_free(h, abort); 5907 return FAILED; 5908 } 5909 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue); 5910 atomic_inc(&h->abort_cmds_available); 5911 wake_up_all(&h->abort_cmd_wait_queue); 5912 if (rc != 0) { 5913 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg); 5914 hpsa_show_dev_msg(KERN_WARNING, h, dev, 5915 "FAILED to abort command"); 5916 cmd_free(h, abort); 5917 return FAILED; 5918 } 5919 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg); 5920 wait_event(h->event_sync_wait_queue, 5921 abort->scsi_cmd != sc || lockup_detected(h)); 5922 cmd_free(h, abort); 5923 return !lockup_detected(h) ? SUCCESS : FAILED; 5924} 5925 5926/* 5927 * For operations with an associated SCSI command, a command block is allocated 5928 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the 5929 * block request tag as an index into a table of entries. cmd_tagged_free() is 5930 * the complement, although cmd_free() may be called instead. 5931 */ 5932static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, 5933 struct scsi_cmnd *scmd) 5934{ 5935 int idx = hpsa_get_cmd_index(scmd); 5936 struct CommandList *c = h->cmd_pool + idx; 5937 5938 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { 5939 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", 5940 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); 5941 /* The index value comes from the block layer, so if it's out of 5942 * bounds, it's probably not our bug. 5943 */ 5944 BUG(); 5945 } 5946 5947 atomic_inc(&c->refcount); 5948 if (unlikely(!hpsa_is_cmd_idle(c))) { 5949 /* 5950 * We expect that the SCSI layer will hand us a unique tag 5951 * value. Thus, there should never be a collision here between 5952 * two requests...because if the selected command isn't idle 5953 * then someone is going to be very disappointed. 5954 */ 5955 dev_err(&h->pdev->dev, 5956 "tag collision (tag=%d) in cmd_tagged_alloc().\n", 5957 idx); 5958 if (c->scsi_cmd != NULL) 5959 scsi_print_command(c->scsi_cmd); 5960 scsi_print_command(scmd); 5961 } 5962 5963 hpsa_cmd_partial_init(h, idx, c); 5964 return c; 5965} 5966 5967static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) 5968{ 5969 /* 5970 * Release our reference to the block. We don't need to do anything 5971 * else to free it, because it is accessed by index. (There's no point 5972 * in checking the result of the decrement, since we cannot guarantee 5973 * that there isn't a concurrent abort which is also accessing it.) 5974 */ 5975 (void)atomic_dec(&c->refcount); 5976} 5977 5978/* 5979 * For operations that cannot sleep, a command block is allocated at init, 5980 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track 5981 * which ones are free or in use. Lock must be held when calling this. 5982 * cmd_free() is the complement. 5983 * This function never gives up and returns NULL. If it hangs, 5984 * another thread must call cmd_free() to free some tags. 5985 */ 5986 5987static struct CommandList *cmd_alloc(struct ctlr_info *h) 5988{ 5989 struct CommandList *c; 5990 int refcount, i; 5991 int offset = 0; 5992 5993 /* 5994 * There is some *extremely* small but non-zero chance that that 5995 * multiple threads could get in here, and one thread could 5996 * be scanning through the list of bits looking for a free 5997 * one, but the free ones are always behind him, and other 5998 * threads sneak in behind him and eat them before he can 5999 * get to them, so that while there is always a free one, a 6000 * very unlucky thread might be starved anyway, never able to 6001 * beat the other threads. In reality, this happens so 6002 * infrequently as to be indistinguishable from never. 6003 * 6004 * Note that we start allocating commands before the SCSI host structure 6005 * is initialized. Since the search starts at bit zero, this 6006 * all works, since we have at least one command structure available; 6007 * however, it means that the structures with the low indexes have to be 6008 * reserved for driver-initiated requests, while requests from the block 6009 * layer will use the higher indexes. 6010 */ 6011 6012 for (;;) { 6013 i = find_next_zero_bit(h->cmd_pool_bits, 6014 HPSA_NRESERVED_CMDS, 6015 offset); 6016 if (unlikely(i >= HPSA_NRESERVED_CMDS)) { 6017 offset = 0; 6018 continue; 6019 } 6020 c = h->cmd_pool + i; 6021 refcount = atomic_inc_return(&c->refcount); 6022 if (unlikely(refcount > 1)) { 6023 cmd_free(h, c); /* already in use */ 6024 offset = (i + 1) % HPSA_NRESERVED_CMDS; 6025 continue; 6026 } 6027 set_bit(i & (BITS_PER_LONG - 1), 6028 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6029 break; /* it's ours now. */ 6030 } 6031 hpsa_cmd_partial_init(h, i, c); 6032 return c; 6033} 6034 6035/* 6036 * This is the complementary operation to cmd_alloc(). Note, however, in some 6037 * corner cases it may also be used to free blocks allocated by 6038 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and 6039 * the clear-bit is harmless. 6040 */ 6041static void cmd_free(struct ctlr_info *h, struct CommandList *c) 6042{ 6043 if (atomic_dec_and_test(&c->refcount)) { 6044 int i; 6045 6046 i = c - h->cmd_pool; 6047 clear_bit(i & (BITS_PER_LONG - 1), 6048 h->cmd_pool_bits + (i / BITS_PER_LONG)); 6049 } 6050} 6051 6052#ifdef CONFIG_COMPAT 6053 6054static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, 6055 void __user *arg) 6056{ 6057 IOCTL32_Command_struct __user *arg32 = 6058 (IOCTL32_Command_struct __user *) arg; 6059 IOCTL_Command_struct arg64; 6060 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); 6061 int err; 6062 u32 cp; 6063 6064 memset(&arg64, 0, sizeof(arg64)); 6065 err = 0; 6066 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, 6067 sizeof(arg64.LUN_info)); 6068 err |= copy_from_user(&arg64.Request, &arg32->Request, 6069 sizeof(arg64.Request)); 6070 err |= copy_from_user(&arg64.error_info, &arg32->error_info, 6071 sizeof(arg64.error_info)); 6072 err |= get_user(arg64.buf_size, &arg32->buf_size); 6073 err |= get_user(cp, &arg32->buf); 6074 arg64.buf = compat_ptr(cp); 6075 err |= copy_to_user(p, &arg64, sizeof(arg64)); 6076 6077 if (err) 6078 return -EFAULT; 6079 6080 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p); 6081 if (err) 6082 return err; 6083 err |= copy_in_user(&arg32->error_info, &p->error_info, 6084 sizeof(arg32->error_info)); 6085 if (err) 6086 return -EFAULT; 6087 return err; 6088} 6089 6090static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, 6091 int cmd, void __user *arg) 6092{ 6093 BIG_IOCTL32_Command_struct __user *arg32 = 6094 (BIG_IOCTL32_Command_struct __user *) arg; 6095 BIG_IOCTL_Command_struct arg64; 6096 BIG_IOCTL_Command_struct __user *p = 6097 compat_alloc_user_space(sizeof(arg64)); 6098 int err; 6099 u32 cp; 6100 6101 memset(&arg64, 0, sizeof(arg64)); 6102 err = 0; 6103 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, 6104 sizeof(arg64.LUN_info)); 6105 err |= copy_from_user(&arg64.Request, &arg32->Request, 6106 sizeof(arg64.Request)); 6107 err |= copy_from_user(&arg64.error_info, &arg32->error_info, 6108 sizeof(arg64.error_info)); 6109 err |= get_user(arg64.buf_size, &arg32->buf_size); 6110 err |= get_user(arg64.malloc_size, &arg32->malloc_size); 6111 err |= get_user(cp, &arg32->buf); 6112 arg64.buf = compat_ptr(cp); 6113 err |= copy_to_user(p, &arg64, sizeof(arg64)); 6114 6115 if (err) 6116 return -EFAULT; 6117 6118 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p); 6119 if (err) 6120 return err; 6121 err |= copy_in_user(&arg32->error_info, &p->error_info, 6122 sizeof(arg32->error_info)); 6123 if (err) 6124 return -EFAULT; 6125 return err; 6126} 6127 6128static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg) 6129{ 6130 switch (cmd) { 6131 case CCISS_GETPCIINFO: 6132 case CCISS_GETINTINFO: 6133 case CCISS_SETINTINFO: 6134 case CCISS_GETNODENAME: 6135 case CCISS_SETNODENAME: 6136 case CCISS_GETHEARTBEAT: 6137 case CCISS_GETBUSTYPES: 6138 case CCISS_GETFIRMVER: 6139 case CCISS_GETDRIVVER: 6140 case CCISS_REVALIDVOLS: 6141 case CCISS_DEREGDISK: 6142 case CCISS_REGNEWDISK: 6143 case CCISS_REGNEWD: 6144 case CCISS_RESCANDISK: 6145 case CCISS_GETLUNINFO: 6146 return hpsa_ioctl(dev, cmd, arg); 6147 6148 case CCISS_PASSTHRU32: 6149 return hpsa_ioctl32_passthru(dev, cmd, arg); 6150 case CCISS_BIG_PASSTHRU32: 6151 return hpsa_ioctl32_big_passthru(dev, cmd, arg); 6152 6153 default: 6154 return -ENOIOCTLCMD; 6155 } 6156} 6157#endif 6158 6159static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) 6160{ 6161 struct hpsa_pci_info pciinfo; 6162 6163 if (!argp) 6164 return -EINVAL; 6165 pciinfo.domain = pci_domain_nr(h->pdev->bus); 6166 pciinfo.bus = h->pdev->bus->number; 6167 pciinfo.dev_fn = h->pdev->devfn; 6168 pciinfo.board_id = h->board_id; 6169 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) 6170 return -EFAULT; 6171 return 0; 6172} 6173 6174static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) 6175{ 6176 DriverVer_type DriverVer; 6177 unsigned char vmaj, vmin, vsubmin; 6178 int rc; 6179 6180 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", 6181 &vmaj, &vmin, &vsubmin); 6182 if (rc != 3) { 6183 dev_info(&h->pdev->dev, "driver version string '%s' " 6184 "unrecognized.", HPSA_DRIVER_VERSION); 6185 vmaj = 0; 6186 vmin = 0; 6187 vsubmin = 0; 6188 } 6189 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; 6190 if (!argp) 6191 return -EINVAL; 6192 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) 6193 return -EFAULT; 6194 return 0; 6195} 6196 6197static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) 6198{ 6199 IOCTL_Command_struct iocommand; 6200 struct CommandList *c; 6201 char *buff = NULL; 6202 u64 temp64; 6203 int rc = 0; 6204 6205 if (!argp) 6206 return -EINVAL; 6207 if (!capable(CAP_SYS_RAWIO)) 6208 return -EPERM; 6209 if (copy_from_user(&iocommand, argp, sizeof(iocommand))) 6210 return -EFAULT; 6211 if ((iocommand.buf_size < 1) && 6212 (iocommand.Request.Type.Direction != XFER_NONE)) { 6213 return -EINVAL; 6214 } 6215 if (iocommand.buf_size > 0) { 6216 buff = kmalloc(iocommand.buf_size, GFP_KERNEL); 6217 if (buff == NULL) 6218 return -ENOMEM; 6219 if (iocommand.Request.Type.Direction & XFER_WRITE) { 6220 /* Copy the data into the buffer we created */ 6221 if (copy_from_user(buff, iocommand.buf, 6222 iocommand.buf_size)) { 6223 rc = -EFAULT; 6224 goto out_kfree; 6225 } 6226 } else { 6227 memset(buff, 0, iocommand.buf_size); 6228 } 6229 } 6230 c = cmd_alloc(h); 6231 6232 /* Fill in the command type */ 6233 c->cmd_type = CMD_IOCTL_PEND; 6234 c->scsi_cmd = SCSI_CMD_BUSY; 6235 /* Fill in Command Header */ 6236 c->Header.ReplyQueue = 0; /* unused in simple mode */ 6237 if (iocommand.buf_size > 0) { /* buffer to fill */ 6238 c->Header.SGList = 1; 6239 c->Header.SGTotal = cpu_to_le16(1); 6240 } else { /* no buffers to fill */ 6241 c->Header.SGList = 0; 6242 c->Header.SGTotal = cpu_to_le16(0); 6243 } 6244 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); 6245 6246 /* Fill in Request block */ 6247 memcpy(&c->Request, &iocommand.Request, 6248 sizeof(c->Request)); 6249 6250 /* Fill in the scatter gather information */ 6251 if (iocommand.buf_size > 0) { 6252 temp64 = pci_map_single(h->pdev, buff, 6253 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); 6254 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) { 6255 c->SG[0].Addr = cpu_to_le64(0); 6256 c->SG[0].Len = cpu_to_le32(0); 6257 rc = -ENOMEM; 6258 goto out; 6259 } 6260 c->SG[0].Addr = cpu_to_le64(temp64); 6261 c->SG[0].Len = cpu_to_le32(iocommand.buf_size); 6262 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */ 6263 } 6264 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); 6265 if (iocommand.buf_size > 0) 6266 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); 6267 check_ioctl_unit_attention(h, c); 6268 if (rc) { 6269 rc = -EIO; 6270 goto out; 6271 } 6272 6273 /* Copy the error information out */ 6274 memcpy(&iocommand.error_info, c->err_info, 6275 sizeof(iocommand.error_info)); 6276 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { 6277 rc = -EFAULT; 6278 goto out; 6279 } 6280 if ((iocommand.Request.Type.Direction & XFER_READ) && 6281 iocommand.buf_size > 0) { 6282 /* Copy the data out of the buffer we created */ 6283 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { 6284 rc = -EFAULT; 6285 goto out; 6286 } 6287 } 6288out: 6289 cmd_free(h, c); 6290out_kfree: 6291 kfree(buff); 6292 return rc; 6293} 6294 6295static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) 6296{ 6297 BIG_IOCTL_Command_struct *ioc; 6298 struct CommandList *c; 6299 unsigned char **buff = NULL; 6300 int *buff_size = NULL; 6301 u64 temp64; 6302 BYTE sg_used = 0; 6303 int status = 0; 6304 u32 left; 6305 u32 sz; 6306 BYTE __user *data_ptr; 6307 6308 if (!argp) 6309 return -EINVAL; 6310 if (!capable(CAP_SYS_RAWIO)) 6311 return -EPERM; 6312 ioc = (BIG_IOCTL_Command_struct *) 6313 kmalloc(sizeof(*ioc), GFP_KERNEL); 6314 if (!ioc) { 6315 status = -ENOMEM; 6316 goto cleanup1; 6317 } 6318 if (copy_from_user(ioc, argp, sizeof(*ioc))) { 6319 status = -EFAULT; 6320 goto cleanup1; 6321 } 6322 if ((ioc->buf_size < 1) && 6323 (ioc->Request.Type.Direction != XFER_NONE)) { 6324 status = -EINVAL; 6325 goto cleanup1; 6326 } 6327 /* Check kmalloc limits using all SGs */ 6328 if (ioc->malloc_size > MAX_KMALLOC_SIZE) { 6329 status = -EINVAL; 6330 goto cleanup1; 6331 } 6332 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) { 6333 status = -EINVAL; 6334 goto cleanup1; 6335 } 6336 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL); 6337 if (!buff) { 6338 status = -ENOMEM; 6339 goto cleanup1; 6340 } 6341 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL); 6342 if (!buff_size) { 6343 status = -ENOMEM; 6344 goto cleanup1; 6345 } 6346 left = ioc->buf_size; 6347 data_ptr = ioc->buf; 6348 while (left) { 6349 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; 6350 buff_size[sg_used] = sz; 6351 buff[sg_used] = kmalloc(sz, GFP_KERNEL); 6352 if (buff[sg_used] == NULL) { 6353 status = -ENOMEM; 6354 goto cleanup1; 6355 } 6356 if (ioc->Request.Type.Direction & XFER_WRITE) { 6357 if (copy_from_user(buff[sg_used], data_ptr, sz)) { 6358 status = -EFAULT; 6359 goto cleanup1; 6360 } 6361 } else 6362 memset(buff[sg_used], 0, sz); 6363 left -= sz; 6364 data_ptr += sz; 6365 sg_used++; 6366 } 6367 c = cmd_alloc(h); 6368 6369 c->cmd_type = CMD_IOCTL_PEND; 6370 c->scsi_cmd = SCSI_CMD_BUSY; 6371 c->Header.ReplyQueue = 0; 6372 c->Header.SGList = (u8) sg_used; 6373 c->Header.SGTotal = cpu_to_le16(sg_used); 6374 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); 6375 memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); 6376 if (ioc->buf_size > 0) { 6377 int i; 6378 for (i = 0; i < sg_used; i++) { 6379 temp64 = pci_map_single(h->pdev, buff[i], 6380 buff_size[i], PCI_DMA_BIDIRECTIONAL); 6381 if (dma_mapping_error(&h->pdev->dev, 6382 (dma_addr_t) temp64)) { 6383 c->SG[i].Addr = cpu_to_le64(0); 6384 c->SG[i].Len = cpu_to_le32(0); 6385 hpsa_pci_unmap(h->pdev, c, i, 6386 PCI_DMA_BIDIRECTIONAL); 6387 status = -ENOMEM; 6388 goto cleanup0; 6389 } 6390 c->SG[i].Addr = cpu_to_le64(temp64); 6391 c->SG[i].Len = cpu_to_le32(buff_size[i]); 6392 c->SG[i].Ext = cpu_to_le32(0); 6393 } 6394 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST); 6395 } 6396 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); 6397 if (sg_used) 6398 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); 6399 check_ioctl_unit_attention(h, c); 6400 if (status) { 6401 status = -EIO; 6402 goto cleanup0; 6403 } 6404 6405 /* Copy the error information out */ 6406 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); 6407 if (copy_to_user(argp, ioc, sizeof(*ioc))) { 6408 status = -EFAULT; 6409 goto cleanup0; 6410 } 6411 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) { 6412 int i; 6413 6414 /* Copy the data out of the buffer we created */ 6415 BYTE __user *ptr = ioc->buf; 6416 for (i = 0; i < sg_used; i++) { 6417 if (copy_to_user(ptr, buff[i], buff_size[i])) { 6418 status = -EFAULT; 6419 goto cleanup0; 6420 } 6421 ptr += buff_size[i]; 6422 } 6423 } 6424 status = 0; 6425cleanup0: 6426 cmd_free(h, c); 6427cleanup1: 6428 if (buff) { 6429 int i; 6430 6431 for (i = 0; i < sg_used; i++) 6432 kfree(buff[i]); 6433 kfree(buff); 6434 } 6435 kfree(buff_size); 6436 kfree(ioc); 6437 return status; 6438} 6439 6440static void check_ioctl_unit_attention(struct ctlr_info *h, 6441 struct CommandList *c) 6442{ 6443 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 6444 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) 6445 (void) check_for_unit_attention(h, c); 6446} 6447 6448/* 6449 * ioctl 6450 */ 6451static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg) 6452{ 6453 struct ctlr_info *h; 6454 void __user *argp = (void __user *)arg; 6455 int rc; 6456 6457 h = sdev_to_hba(dev); 6458 6459 switch (cmd) { 6460 case CCISS_DEREGDISK: 6461 case CCISS_REGNEWDISK: 6462 case CCISS_REGNEWD: 6463 hpsa_scan_start(h->scsi_host); 6464 return 0; 6465 case CCISS_GETPCIINFO: 6466 return hpsa_getpciinfo_ioctl(h, argp); 6467 case CCISS_GETDRIVVER: 6468 return hpsa_getdrivver_ioctl(h, argp); 6469 case CCISS_PASSTHRU: 6470 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6471 return -EAGAIN; 6472 rc = hpsa_passthru_ioctl(h, argp); 6473 atomic_inc(&h->passthru_cmds_avail); 6474 return rc; 6475 case CCISS_BIG_PASSTHRU: 6476 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0) 6477 return -EAGAIN; 6478 rc = hpsa_big_passthru_ioctl(h, argp); 6479 atomic_inc(&h->passthru_cmds_avail); 6480 return rc; 6481 default: 6482 return -ENOTTY; 6483 } 6484} 6485 6486static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr, 6487 u8 reset_type) 6488{ 6489 struct CommandList *c; 6490 6491 c = cmd_alloc(h); 6492 6493 /* fill_cmd can't fail here, no data buffer to map */ 6494 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, 6495 RAID_CTLR_LUNID, TYPE_MSG); 6496 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ 6497 c->waiting = NULL; 6498 enqueue_cmd_and_start_io(h, c); 6499 /* Don't wait for completion, the reset won't complete. Don't free 6500 * the command either. This is the last command we will send before 6501 * re-initializing everything, so it doesn't matter and won't leak. 6502 */ 6503 return; 6504} 6505 6506static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 6507 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, 6508 int cmd_type) 6509{ 6510 int pci_dir = XFER_NONE; 6511 u64 tag; /* for commands to be aborted */ 6512 6513 c->cmd_type = CMD_IOCTL_PEND; 6514 c->scsi_cmd = SCSI_CMD_BUSY; 6515 c->Header.ReplyQueue = 0; 6516 if (buff != NULL && size > 0) { 6517 c->Header.SGList = 1; 6518 c->Header.SGTotal = cpu_to_le16(1); 6519 } else { 6520 c->Header.SGList = 0; 6521 c->Header.SGTotal = cpu_to_le16(0); 6522 } 6523 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); 6524 6525 if (cmd_type == TYPE_CMD) { 6526 switch (cmd) { 6527 case HPSA_INQUIRY: 6528 /* are we trying to read a vital product page */ 6529 if (page_code & VPD_PAGE) { 6530 c->Request.CDB[1] = 0x01; 6531 c->Request.CDB[2] = (page_code & 0xff); 6532 } 6533 c->Request.CDBLen = 6; 6534 c->Request.type_attr_dir = 6535 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6536 c->Request.Timeout = 0; 6537 c->Request.CDB[0] = HPSA_INQUIRY; 6538 c->Request.CDB[4] = size & 0xFF; 6539 break; 6540 case HPSA_REPORT_LOG: 6541 case HPSA_REPORT_PHYS: 6542 /* Talking to controller so It's a physical command 6543 mode = 00 target = 0. Nothing to write. 6544 */ 6545 c->Request.CDBLen = 12; 6546 c->Request.type_attr_dir = 6547 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6548 c->Request.Timeout = 0; 6549 c->Request.CDB[0] = cmd; 6550 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6551 c->Request.CDB[7] = (size >> 16) & 0xFF; 6552 c->Request.CDB[8] = (size >> 8) & 0xFF; 6553 c->Request.CDB[9] = size & 0xFF; 6554 break; 6555 case BMIC_SENSE_DIAG_OPTIONS: 6556 c->Request.CDBLen = 16; 6557 c->Request.type_attr_dir = 6558 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6559 c->Request.Timeout = 0; 6560 /* Spec says this should be BMIC_WRITE */ 6561 c->Request.CDB[0] = BMIC_READ; 6562 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS; 6563 break; 6564 case BMIC_SET_DIAG_OPTIONS: 6565 c->Request.CDBLen = 16; 6566 c->Request.type_attr_dir = 6567 TYPE_ATTR_DIR(cmd_type, 6568 ATTR_SIMPLE, XFER_WRITE); 6569 c->Request.Timeout = 0; 6570 c->Request.CDB[0] = BMIC_WRITE; 6571 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS; 6572 break; 6573 case HPSA_CACHE_FLUSH: 6574 c->Request.CDBLen = 12; 6575 c->Request.type_attr_dir = 6576 TYPE_ATTR_DIR(cmd_type, 6577 ATTR_SIMPLE, XFER_WRITE); 6578 c->Request.Timeout = 0; 6579 c->Request.CDB[0] = BMIC_WRITE; 6580 c->Request.CDB[6] = BMIC_CACHE_FLUSH; 6581 c->Request.CDB[7] = (size >> 8) & 0xFF; 6582 c->Request.CDB[8] = size & 0xFF; 6583 break; 6584 case TEST_UNIT_READY: 6585 c->Request.CDBLen = 6; 6586 c->Request.type_attr_dir = 6587 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6588 c->Request.Timeout = 0; 6589 break; 6590 case HPSA_GET_RAID_MAP: 6591 c->Request.CDBLen = 12; 6592 c->Request.type_attr_dir = 6593 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6594 c->Request.Timeout = 0; 6595 c->Request.CDB[0] = HPSA_CISS_READ; 6596 c->Request.CDB[1] = cmd; 6597 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 6598 c->Request.CDB[7] = (size >> 16) & 0xFF; 6599 c->Request.CDB[8] = (size >> 8) & 0xFF; 6600 c->Request.CDB[9] = size & 0xFF; 6601 break; 6602 case BMIC_SENSE_CONTROLLER_PARAMETERS: 6603 c->Request.CDBLen = 10; 6604 c->Request.type_attr_dir = 6605 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6606 c->Request.Timeout = 0; 6607 c->Request.CDB[0] = BMIC_READ; 6608 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS; 6609 c->Request.CDB[7] = (size >> 16) & 0xFF; 6610 c->Request.CDB[8] = (size >> 8) & 0xFF; 6611 break; 6612 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 6613 c->Request.CDBLen = 10; 6614 c->Request.type_attr_dir = 6615 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6616 c->Request.Timeout = 0; 6617 c->Request.CDB[0] = BMIC_READ; 6618 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE; 6619 c->Request.CDB[7] = (size >> 16) & 0xFF; 6620 c->Request.CDB[8] = (size >> 8) & 0XFF; 6621 break; 6622 case BMIC_SENSE_SUBSYSTEM_INFORMATION: 6623 c->Request.CDBLen = 10; 6624 c->Request.type_attr_dir = 6625 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6626 c->Request.Timeout = 0; 6627 c->Request.CDB[0] = BMIC_READ; 6628 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION; 6629 c->Request.CDB[7] = (size >> 16) & 0xFF; 6630 c->Request.CDB[8] = (size >> 8) & 0XFF; 6631 break; 6632 case BMIC_IDENTIFY_CONTROLLER: 6633 c->Request.CDBLen = 10; 6634 c->Request.type_attr_dir = 6635 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); 6636 c->Request.Timeout = 0; 6637 c->Request.CDB[0] = BMIC_READ; 6638 c->Request.CDB[1] = 0; 6639 c->Request.CDB[2] = 0; 6640 c->Request.CDB[3] = 0; 6641 c->Request.CDB[4] = 0; 6642 c->Request.CDB[5] = 0; 6643 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER; 6644 c->Request.CDB[7] = (size >> 16) & 0xFF; 6645 c->Request.CDB[8] = (size >> 8) & 0XFF; 6646 c->Request.CDB[9] = 0; 6647 break; 6648 default: 6649 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); 6650 BUG(); 6651 return -1; 6652 } 6653 } else if (cmd_type == TYPE_MSG) { 6654 switch (cmd) { 6655 6656 case HPSA_PHYS_TARGET_RESET: 6657 c->Request.CDBLen = 16; 6658 c->Request.type_attr_dir = 6659 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6660 c->Request.Timeout = 0; /* Don't time out */ 6661 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6662 c->Request.CDB[0] = HPSA_RESET; 6663 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE; 6664 /* Physical target reset needs no control bytes 4-7*/ 6665 c->Request.CDB[4] = 0x00; 6666 c->Request.CDB[5] = 0x00; 6667 c->Request.CDB[6] = 0x00; 6668 c->Request.CDB[7] = 0x00; 6669 break; 6670 case HPSA_DEVICE_RESET_MSG: 6671 c->Request.CDBLen = 16; 6672 c->Request.type_attr_dir = 6673 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); 6674 c->Request.Timeout = 0; /* Don't time out */ 6675 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); 6676 c->Request.CDB[0] = cmd; 6677 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN; 6678 /* If bytes 4-7 are zero, it means reset the */ 6679 /* LunID device */ 6680 c->Request.CDB[4] = 0x00; 6681 c->Request.CDB[5] = 0x00; 6682 c->Request.CDB[6] = 0x00; 6683 c->Request.CDB[7] = 0x00; 6684 break; 6685 case HPSA_ABORT_MSG: 6686 memcpy(&tag, buff, sizeof(tag)); 6687 dev_dbg(&h->pdev->dev, 6688 "Abort Tag:0x%016llx using rqst Tag:0x%016llx", 6689 tag, c->Header.tag); 6690 c->Request.CDBLen = 16; 6691 c->Request.type_attr_dir = 6692 TYPE_ATTR_DIR(cmd_type, 6693 ATTR_SIMPLE, XFER_WRITE); 6694 c->Request.Timeout = 0; /* Don't time out */ 6695 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT; 6696 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK; 6697 c->Request.CDB[2] = 0x00; /* reserved */ 6698 c->Request.CDB[3] = 0x00; /* reserved */ 6699 /* Tag to abort goes in CDB[4]-CDB[11] */ 6700 memcpy(&c->Request.CDB[4], &tag, sizeof(tag)); 6701 c->Request.CDB[12] = 0x00; /* reserved */ 6702 c->Request.CDB[13] = 0x00; /* reserved */ 6703 c->Request.CDB[14] = 0x00; /* reserved */ 6704 c->Request.CDB[15] = 0x00; /* reserved */ 6705 break; 6706 default: 6707 dev_warn(&h->pdev->dev, "unknown message type %d\n", 6708 cmd); 6709 BUG(); 6710 } 6711 } else { 6712 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); 6713 BUG(); 6714 } 6715 6716 switch (GET_DIR(c->Request.type_attr_dir)) { 6717 case XFER_READ: 6718 pci_dir = PCI_DMA_FROMDEVICE; 6719 break; 6720 case XFER_WRITE: 6721 pci_dir = PCI_DMA_TODEVICE; 6722 break; 6723 case XFER_NONE: 6724 pci_dir = PCI_DMA_NONE; 6725 break; 6726 default: 6727 pci_dir = PCI_DMA_BIDIRECTIONAL; 6728 } 6729 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir)) 6730 return -1; 6731 return 0; 6732} 6733 6734/* 6735 * Map (physical) PCI mem into (virtual) kernel space 6736 */ 6737static void __iomem *remap_pci_mem(ulong base, ulong size) 6738{ 6739 ulong page_base = ((ulong) base) & PAGE_MASK; 6740 ulong page_offs = ((ulong) base) - page_base; 6741 void __iomem *page_remapped = ioremap_nocache(page_base, 6742 page_offs + size); 6743 6744 return page_remapped ? (page_remapped + page_offs) : NULL; 6745} 6746 6747static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q) 6748{ 6749 return h->access.command_completed(h, q); 6750} 6751 6752static inline bool interrupt_pending(struct ctlr_info *h) 6753{ 6754 return h->access.intr_pending(h); 6755} 6756 6757static inline long interrupt_not_for_us(struct ctlr_info *h) 6758{ 6759 return (h->access.intr_pending(h) == 0) || 6760 (h->interrupts_enabled == 0); 6761} 6762 6763static inline int bad_tag(struct ctlr_info *h, u32 tag_index, 6764 u32 raw_tag) 6765{ 6766 if (unlikely(tag_index >= h->nr_cmds)) { 6767 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); 6768 return 1; 6769 } 6770 return 0; 6771} 6772 6773static inline void finish_cmd(struct CommandList *c) 6774{ 6775 dial_up_lockup_detection_on_fw_flash_complete(c->h, c); 6776 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI 6777 || c->cmd_type == CMD_IOACCEL2)) 6778 complete_scsi_command(c); 6779 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF) 6780 complete(c->waiting); 6781} 6782 6783/* process completion of an indexed ("direct lookup") command */ 6784static inline void process_indexed_cmd(struct ctlr_info *h, 6785 u32 raw_tag) 6786{ 6787 u32 tag_index; 6788 struct CommandList *c; 6789 6790 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT; 6791 if (!bad_tag(h, tag_index, raw_tag)) { 6792 c = h->cmd_pool + tag_index; 6793 finish_cmd(c); 6794 } 6795} 6796 6797/* Some controllers, like p400, will give us one interrupt 6798 * after a soft reset, even if we turned interrupts off. 6799 * Only need to check for this in the hpsa_xxx_discard_completions 6800 * functions. 6801 */ 6802static int ignore_bogus_interrupt(struct ctlr_info *h) 6803{ 6804 if (likely(!reset_devices)) 6805 return 0; 6806 6807 if (likely(h->interrupts_enabled)) 6808 return 0; 6809 6810 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " 6811 "(known firmware bug.) Ignoring.\n"); 6812 6813 return 1; 6814} 6815 6816/* 6817 * Convert &h->q[x] (passed to interrupt handlers) back to h. 6818 * Relies on (h-q[x] == x) being true for x such that 6819 * 0 <= x < MAX_REPLY_QUEUES. 6820 */ 6821static struct ctlr_info *queue_to_hba(u8 *queue) 6822{ 6823 return container_of((queue - *queue), struct ctlr_info, q[0]); 6824} 6825 6826static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue) 6827{ 6828 struct ctlr_info *h = queue_to_hba(queue); 6829 u8 q = *(u8 *) queue; 6830 u32 raw_tag; 6831 6832 if (ignore_bogus_interrupt(h)) 6833 return IRQ_NONE; 6834 6835 if (interrupt_not_for_us(h)) 6836 return IRQ_NONE; 6837 h->last_intr_timestamp = get_jiffies_64(); 6838 while (interrupt_pending(h)) { 6839 raw_tag = get_next_completion(h, q); 6840 while (raw_tag != FIFO_EMPTY) 6841 raw_tag = next_command(h, q); 6842 } 6843 return IRQ_HANDLED; 6844} 6845 6846static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue) 6847{ 6848 struct ctlr_info *h = queue_to_hba(queue); 6849 u32 raw_tag; 6850 u8 q = *(u8 *) queue; 6851 6852 if (ignore_bogus_interrupt(h)) 6853 return IRQ_NONE; 6854 6855 h->last_intr_timestamp = get_jiffies_64(); 6856 raw_tag = get_next_completion(h, q); 6857 while (raw_tag != FIFO_EMPTY) 6858 raw_tag = next_command(h, q); 6859 return IRQ_HANDLED; 6860} 6861 6862static irqreturn_t do_hpsa_intr_intx(int irq, void *queue) 6863{ 6864 struct ctlr_info *h = queue_to_hba((u8 *) queue); 6865 u32 raw_tag; 6866 u8 q = *(u8 *) queue; 6867 6868 if (interrupt_not_for_us(h)) 6869 return IRQ_NONE; 6870 h->last_intr_timestamp = get_jiffies_64(); 6871 while (interrupt_pending(h)) { 6872 raw_tag = get_next_completion(h, q); 6873 while (raw_tag != FIFO_EMPTY) { 6874 process_indexed_cmd(h, raw_tag); 6875 raw_tag = next_command(h, q); 6876 } 6877 } 6878 return IRQ_HANDLED; 6879} 6880 6881static irqreturn_t do_hpsa_intr_msi(int irq, void *queue) 6882{ 6883 struct ctlr_info *h = queue_to_hba(queue); 6884 u32 raw_tag; 6885 u8 q = *(u8 *) queue; 6886 6887 h->last_intr_timestamp = get_jiffies_64(); 6888 raw_tag = get_next_completion(h, q); 6889 while (raw_tag != FIFO_EMPTY) { 6890 process_indexed_cmd(h, raw_tag); 6891 raw_tag = next_command(h, q); 6892 } 6893 return IRQ_HANDLED; 6894} 6895 6896/* Send a message CDB to the firmware. Careful, this only works 6897 * in simple mode, not performant mode due to the tag lookup. 6898 * We only ever use this immediately after a controller reset. 6899 */ 6900static int hpsa_message(struct pci_dev *pdev, unsigned char opcode, 6901 unsigned char type) 6902{ 6903 struct Command { 6904 struct CommandListHeader CommandHeader; 6905 struct RequestBlock Request; 6906 struct ErrDescriptor ErrorDescriptor; 6907 }; 6908 struct Command *cmd; 6909 static const size_t cmd_sz = sizeof(*cmd) + 6910 sizeof(cmd->ErrorDescriptor); 6911 dma_addr_t paddr64; 6912 __le32 paddr32; 6913 u32 tag; 6914 void __iomem *vaddr; 6915 int i, err; 6916 6917 vaddr = pci_ioremap_bar(pdev, 0); 6918 if (vaddr == NULL) 6919 return -ENOMEM; 6920 6921 /* The Inbound Post Queue only accepts 32-bit physical addresses for the 6922 * CCISS commands, so they must be allocated from the lower 4GiB of 6923 * memory. 6924 */ 6925 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 6926 if (err) { 6927 iounmap(vaddr); 6928 return err; 6929 } 6930 6931 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); 6932 if (cmd == NULL) { 6933 iounmap(vaddr); 6934 return -ENOMEM; 6935 } 6936 6937 /* This must fit, because of the 32-bit consistent DMA mask. Also, 6938 * although there's no guarantee, we assume that the address is at 6939 * least 4-byte aligned (most likely, it's page-aligned). 6940 */ 6941 paddr32 = cpu_to_le32(paddr64); 6942 6943 cmd->CommandHeader.ReplyQueue = 0; 6944 cmd->CommandHeader.SGList = 0; 6945 cmd->CommandHeader.SGTotal = cpu_to_le16(0); 6946 cmd->CommandHeader.tag = cpu_to_le64(paddr64); 6947 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); 6948 6949 cmd->Request.CDBLen = 16; 6950 cmd->Request.type_attr_dir = 6951 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE); 6952 cmd->Request.Timeout = 0; /* Don't time out */ 6953 cmd->Request.CDB[0] = opcode; 6954 cmd->Request.CDB[1] = type; 6955 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ 6956 cmd->ErrorDescriptor.Addr = 6957 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd))); 6958 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo)); 6959 6960 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET); 6961 6962 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { 6963 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); 6964 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64) 6965 break; 6966 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); 6967 } 6968 6969 iounmap(vaddr); 6970 6971 /* we leak the DMA buffer here ... no choice since the controller could 6972 * still complete the command. 6973 */ 6974 if (i == HPSA_MSG_SEND_RETRY_LIMIT) { 6975 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", 6976 opcode, type); 6977 return -ETIMEDOUT; 6978 } 6979 6980 pci_free_consistent(pdev, cmd_sz, cmd, paddr64); 6981 6982 if (tag & HPSA_ERROR_BIT) { 6983 dev_err(&pdev->dev, "controller message %02x:%02x failed\n", 6984 opcode, type); 6985 return -EIO; 6986 } 6987 6988 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", 6989 opcode, type); 6990 return 0; 6991} 6992 6993#define hpsa_noop(p) hpsa_message(p, 3, 0) 6994 6995static int hpsa_controller_hard_reset(struct pci_dev *pdev, 6996 void __iomem *vaddr, u32 use_doorbell) 6997{ 6998 6999 if (use_doorbell) { 7000 /* For everything after the P600, the PCI power state method 7001 * of resetting the controller doesn't work, so we have this 7002 * other way using the doorbell register. 7003 */ 7004 dev_info(&pdev->dev, "using doorbell to reset controller\n"); 7005 writel(use_doorbell, vaddr + SA5_DOORBELL); 7006 7007 /* PMC hardware guys tell us we need a 10 second delay after 7008 * doorbell reset and before any attempt to talk to the board 7009 * at all to ensure that this actually works and doesn't fall 7010 * over in some weird corner cases. 7011 */ 7012 msleep(10000); 7013 } else { /* Try to do it the PCI power state way */ 7014 7015 /* Quoting from the Open CISS Specification: "The Power 7016 * Management Control/Status Register (CSR) controls the power 7017 * state of the device. The normal operating state is D0, 7018 * CSR=00h. The software off state is D3, CSR=03h. To reset 7019 * the controller, place the interface device in D3 then to D0, 7020 * this causes a secondary PCI reset which will reset the 7021 * controller." */ 7022 7023 int rc = 0; 7024 7025 dev_info(&pdev->dev, "using PCI PM to reset controller\n"); 7026 7027 /* enter the D3hot power management state */ 7028 rc = pci_set_power_state(pdev, PCI_D3hot); 7029 if (rc) 7030 return rc; 7031 7032 msleep(500); 7033 7034 /* enter the D0 power management state */ 7035 rc = pci_set_power_state(pdev, PCI_D0); 7036 if (rc) 7037 return rc; 7038 7039 /* 7040 * The P600 requires a small delay when changing states. 7041 * Otherwise we may think the board did not reset and we bail. 7042 * This for kdump only and is particular to the P600. 7043 */ 7044 msleep(500); 7045 } 7046 return 0; 7047} 7048 7049static void init_driver_version(char *driver_version, int len) 7050{ 7051 memset(driver_version, 0, len); 7052 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1); 7053} 7054 7055static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable) 7056{ 7057 char *driver_version; 7058 int i, size = sizeof(cfgtable->driver_version); 7059 7060 driver_version = kmalloc(size, GFP_KERNEL); 7061 if (!driver_version) 7062 return -ENOMEM; 7063 7064 init_driver_version(driver_version, size); 7065 for (i = 0; i < size; i++) 7066 writeb(driver_version[i], &cfgtable->driver_version[i]); 7067 kfree(driver_version); 7068 return 0; 7069} 7070 7071static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable, 7072 unsigned char *driver_ver) 7073{ 7074 int i; 7075 7076 for (i = 0; i < sizeof(cfgtable->driver_version); i++) 7077 driver_ver[i] = readb(&cfgtable->driver_version[i]); 7078} 7079 7080static int controller_reset_failed(struct CfgTable __iomem *cfgtable) 7081{ 7082 7083 char *driver_ver, *old_driver_ver; 7084 int rc, size = sizeof(cfgtable->driver_version); 7085 7086 old_driver_ver = kmalloc(2 * size, GFP_KERNEL); 7087 if (!old_driver_ver) 7088 return -ENOMEM; 7089 driver_ver = old_driver_ver + size; 7090 7091 /* After a reset, the 32 bytes of "driver version" in the cfgtable 7092 * should have been changed, otherwise we know the reset failed. 7093 */ 7094 init_driver_version(old_driver_ver, size); 7095 read_driver_ver_from_cfgtable(cfgtable, driver_ver); 7096 rc = !memcmp(driver_ver, old_driver_ver, size); 7097 kfree(old_driver_ver); 7098 return rc; 7099} 7100/* This does a hard reset of the controller using PCI power management 7101 * states or the using the doorbell register. 7102 */ 7103static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id) 7104{ 7105 u64 cfg_offset; 7106 u32 cfg_base_addr; 7107 u64 cfg_base_addr_index; 7108 void __iomem *vaddr; 7109 unsigned long paddr; 7110 u32 misc_fw_support; 7111 int rc; 7112 struct CfgTable __iomem *cfgtable; 7113 u32 use_doorbell; 7114 u16 command_register; 7115 7116 /* For controllers as old as the P600, this is very nearly 7117 * the same thing as 7118 * 7119 * pci_save_state(pci_dev); 7120 * pci_set_power_state(pci_dev, PCI_D3hot); 7121 * pci_set_power_state(pci_dev, PCI_D0); 7122 * pci_restore_state(pci_dev); 7123 * 7124 * For controllers newer than the P600, the pci power state 7125 * method of resetting doesn't work so we have another way 7126 * using the doorbell register. 7127 */ 7128 7129 if (!ctlr_is_resettable(board_id)) { 7130 dev_warn(&pdev->dev, "Controller not resettable\n"); 7131 return -ENODEV; 7132 } 7133 7134 /* if controller is soft- but not hard resettable... */ 7135 if (!ctlr_is_hard_resettable(board_id)) 7136 return -ENOTSUPP; /* try soft reset later. */ 7137 7138 /* Save the PCI command register */ 7139 pci_read_config_word(pdev, 4, &command_register); 7140 pci_save_state(pdev); 7141 7142 /* find the first memory BAR, so we can find the cfg table */ 7143 rc = hpsa_pci_find_memory_BAR(pdev, &paddr); 7144 if (rc) 7145 return rc; 7146 vaddr = remap_pci_mem(paddr, 0x250); 7147 if (!vaddr) 7148 return -ENOMEM; 7149 7150 /* find cfgtable in order to check if reset via doorbell is supported */ 7151 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, 7152 &cfg_base_addr_index, &cfg_offset); 7153 if (rc) 7154 goto unmap_vaddr; 7155 cfgtable = remap_pci_mem(pci_resource_start(pdev, 7156 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); 7157 if (!cfgtable) { 7158 rc = -ENOMEM; 7159 goto unmap_vaddr; 7160 } 7161 rc = write_driver_ver_to_cfgtable(cfgtable); 7162 if (rc) 7163 goto unmap_cfgtable; 7164 7165 /* If reset via doorbell register is supported, use that. 7166 * There are two such methods. Favor the newest method. 7167 */ 7168 misc_fw_support = readl(&cfgtable->misc_fw_support); 7169 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; 7170 if (use_doorbell) { 7171 use_doorbell = DOORBELL_CTLR_RESET2; 7172 } else { 7173 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; 7174 if (use_doorbell) { 7175 dev_warn(&pdev->dev, 7176 "Soft reset not supported. Firmware update is required.\n"); 7177 rc = -ENOTSUPP; /* try soft reset */ 7178 goto unmap_cfgtable; 7179 } 7180 } 7181 7182 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); 7183 if (rc) 7184 goto unmap_cfgtable; 7185 7186 pci_restore_state(pdev); 7187 pci_write_config_word(pdev, 4, command_register); 7188 7189 /* Some devices (notably the HP Smart Array 5i Controller) 7190 need a little pause here */ 7191 msleep(HPSA_POST_RESET_PAUSE_MSECS); 7192 7193 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); 7194 if (rc) { 7195 dev_warn(&pdev->dev, 7196 "Failed waiting for board to become ready after hard reset\n"); 7197 goto unmap_cfgtable; 7198 } 7199 7200 rc = controller_reset_failed(vaddr); 7201 if (rc < 0) 7202 goto unmap_cfgtable; 7203 if (rc) { 7204 dev_warn(&pdev->dev, "Unable to successfully reset " 7205 "controller. Will try soft reset.\n"); 7206 rc = -ENOTSUPP; 7207 } else { 7208 dev_info(&pdev->dev, "board ready after hard reset.\n"); 7209 } 7210 7211unmap_cfgtable: 7212 iounmap(cfgtable); 7213 7214unmap_vaddr: 7215 iounmap(vaddr); 7216 return rc; 7217} 7218 7219/* 7220 * We cannot read the structure directly, for portability we must use 7221 * the io functions. 7222 * This is for debug only. 7223 */ 7224static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb) 7225{ 7226#ifdef HPSA_DEBUG 7227 int i; 7228 char temp_name[17]; 7229 7230 dev_info(dev, "Controller Configuration information\n"); 7231 dev_info(dev, "------------------------------------\n"); 7232 for (i = 0; i < 4; i++) 7233 temp_name[i] = readb(&(tb->Signature[i])); 7234 temp_name[4] = '\0'; 7235 dev_info(dev, " Signature = %s\n", temp_name); 7236 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); 7237 dev_info(dev, " Transport methods supported = 0x%x\n", 7238 readl(&(tb->TransportSupport))); 7239 dev_info(dev, " Transport methods active = 0x%x\n", 7240 readl(&(tb->TransportActive))); 7241 dev_info(dev, " Requested transport Method = 0x%x\n", 7242 readl(&(tb->HostWrite.TransportRequest))); 7243 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", 7244 readl(&(tb->HostWrite.CoalIntDelay))); 7245 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", 7246 readl(&(tb->HostWrite.CoalIntCount))); 7247 dev_info(dev, " Max outstanding commands = %d\n", 7248 readl(&(tb->CmdsOutMax))); 7249 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); 7250 for (i = 0; i < 16; i++) 7251 temp_name[i] = readb(&(tb->ServerName[i])); 7252 temp_name[16] = '\0'; 7253 dev_info(dev, " Server Name = %s\n", temp_name); 7254 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", 7255 readl(&(tb->HeartBeat))); 7256#endif /* HPSA_DEBUG */ 7257} 7258 7259static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) 7260{ 7261 int i, offset, mem_type, bar_type; 7262 7263 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ 7264 return 0; 7265 offset = 0; 7266 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { 7267 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; 7268 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) 7269 offset += 4; 7270 else { 7271 mem_type = pci_resource_flags(pdev, i) & 7272 PCI_BASE_ADDRESS_MEM_TYPE_MASK; 7273 switch (mem_type) { 7274 case PCI_BASE_ADDRESS_MEM_TYPE_32: 7275 case PCI_BASE_ADDRESS_MEM_TYPE_1M: 7276 offset += 4; /* 32 bit */ 7277 break; 7278 case PCI_BASE_ADDRESS_MEM_TYPE_64: 7279 offset += 8; 7280 break; 7281 default: /* reserved in PCI 2.2 */ 7282 dev_warn(&pdev->dev, 7283 "base address is invalid\n"); 7284 return -1; 7285 break; 7286 } 7287 } 7288 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) 7289 return i + 1; 7290 } 7291 return -1; 7292} 7293 7294static void hpsa_disable_interrupt_mode(struct ctlr_info *h) 7295{ 7296 if (h->msix_vector) { 7297 if (h->pdev->msix_enabled) 7298 pci_disable_msix(h->pdev); 7299 h->msix_vector = 0; 7300 } else if (h->msi_vector) { 7301 if (h->pdev->msi_enabled) 7302 pci_disable_msi(h->pdev); 7303 h->msi_vector = 0; 7304 } 7305} 7306 7307/* If MSI/MSI-X is supported by the kernel we will try to enable it on 7308 * controllers that are capable. If not, we use legacy INTx mode. 7309 */ 7310static void hpsa_interrupt_mode(struct ctlr_info *h) 7311{ 7312#ifdef CONFIG_PCI_MSI 7313 int err, i; 7314 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES]; 7315 7316 for (i = 0; i < MAX_REPLY_QUEUES; i++) { 7317 hpsa_msix_entries[i].vector = 0; 7318 hpsa_msix_entries[i].entry = i; 7319 } 7320 7321 /* Some boards advertise MSI but don't really support it */ 7322 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || 7323 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) 7324 goto default_int_mode; 7325 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { 7326 dev_info(&h->pdev->dev, "MSI-X capable controller\n"); 7327 h->msix_vector = MAX_REPLY_QUEUES; 7328 if (h->msix_vector > num_online_cpus()) 7329 h->msix_vector = num_online_cpus(); 7330 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries, 7331 1, h->msix_vector); 7332 if (err < 0) { 7333 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err); 7334 h->msix_vector = 0; 7335 goto single_msi_mode; 7336 } else if (err < h->msix_vector) { 7337 dev_warn(&h->pdev->dev, "only %d MSI-X vectors " 7338 "available\n", err); 7339 } 7340 h->msix_vector = err; 7341 for (i = 0; i < h->msix_vector; i++) 7342 h->intr[i] = hpsa_msix_entries[i].vector; 7343 return; 7344 } 7345single_msi_mode: 7346 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { 7347 dev_info(&h->pdev->dev, "MSI capable controller\n"); 7348 if (!pci_enable_msi(h->pdev)) 7349 h->msi_vector = 1; 7350 else 7351 dev_warn(&h->pdev->dev, "MSI init failed\n"); 7352 } 7353default_int_mode: 7354#endif /* CONFIG_PCI_MSI */ 7355 /* if we get here we're going to use the default interrupt mode */ 7356 h->intr[h->intr_mode] = h->pdev->irq; 7357} 7358 7359static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) 7360{ 7361 int i; 7362 u32 subsystem_vendor_id, subsystem_device_id; 7363 7364 subsystem_vendor_id = pdev->subsystem_vendor; 7365 subsystem_device_id = pdev->subsystem_device; 7366 *board_id = ((subsystem_device_id << 16) & 0xffff0000) | 7367 subsystem_vendor_id; 7368 7369 for (i = 0; i < ARRAY_SIZE(products); i++) 7370 if (*board_id == products[i].board_id) 7371 return i; 7372 7373 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && 7374 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || 7375 !hpsa_allow_any) { 7376 dev_warn(&pdev->dev, "unrecognized board ID: " 7377 "0x%08x, ignoring.\n", *board_id); 7378 return -ENODEV; 7379 } 7380 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ 7381} 7382 7383static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 7384 unsigned long *memory_bar) 7385{ 7386 int i; 7387 7388 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) 7389 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { 7390 /* addressing mode bits already removed */ 7391 *memory_bar = pci_resource_start(pdev, i); 7392 dev_dbg(&pdev->dev, "memory BAR = %lx\n", 7393 *memory_bar); 7394 return 0; 7395 } 7396 dev_warn(&pdev->dev, "no memory BAR found\n"); 7397 return -ENODEV; 7398} 7399 7400static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, 7401 int wait_for_ready) 7402{ 7403 int i, iterations; 7404 u32 scratchpad; 7405 if (wait_for_ready) 7406 iterations = HPSA_BOARD_READY_ITERATIONS; 7407 else 7408 iterations = HPSA_BOARD_NOT_READY_ITERATIONS; 7409 7410 for (i = 0; i < iterations; i++) { 7411 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); 7412 if (wait_for_ready) { 7413 if (scratchpad == HPSA_FIRMWARE_READY) 7414 return 0; 7415 } else { 7416 if (scratchpad != HPSA_FIRMWARE_READY) 7417 return 0; 7418 } 7419 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); 7420 } 7421 dev_warn(&pdev->dev, "board not ready, timed out.\n"); 7422 return -ENODEV; 7423} 7424 7425static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, 7426 u32 *cfg_base_addr, u64 *cfg_base_addr_index, 7427 u64 *cfg_offset) 7428{ 7429 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); 7430 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); 7431 *cfg_base_addr &= (u32) 0x0000ffff; 7432 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); 7433 if (*cfg_base_addr_index == -1) { 7434 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); 7435 return -ENODEV; 7436 } 7437 return 0; 7438} 7439 7440static void hpsa_free_cfgtables(struct ctlr_info *h) 7441{ 7442 if (h->transtable) { 7443 iounmap(h->transtable); 7444 h->transtable = NULL; 7445 } 7446 if (h->cfgtable) { 7447 iounmap(h->cfgtable); 7448 h->cfgtable = NULL; 7449 } 7450} 7451 7452/* Find and map CISS config table and transfer table 7453+ * several items must be unmapped (freed) later 7454+ * */ 7455static int hpsa_find_cfgtables(struct ctlr_info *h) 7456{ 7457 u64 cfg_offset; 7458 u32 cfg_base_addr; 7459 u64 cfg_base_addr_index; 7460 u32 trans_offset; 7461 int rc; 7462 7463 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 7464 &cfg_base_addr_index, &cfg_offset); 7465 if (rc) 7466 return rc; 7467 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, 7468 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); 7469 if (!h->cfgtable) { 7470 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n"); 7471 return -ENOMEM; 7472 } 7473 rc = write_driver_ver_to_cfgtable(h->cfgtable); 7474 if (rc) 7475 return rc; 7476 /* Find performant mode table. */ 7477 trans_offset = readl(&h->cfgtable->TransMethodOffset); 7478 h->transtable = remap_pci_mem(pci_resource_start(h->pdev, 7479 cfg_base_addr_index)+cfg_offset+trans_offset, 7480 sizeof(*h->transtable)); 7481 if (!h->transtable) { 7482 dev_err(&h->pdev->dev, "Failed mapping transfer table\n"); 7483 hpsa_free_cfgtables(h); 7484 return -ENOMEM; 7485 } 7486 return 0; 7487} 7488 7489static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) 7490{ 7491#define MIN_MAX_COMMANDS 16 7492 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS); 7493 7494 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands); 7495 7496 /* Limit commands in memory limited kdump scenario. */ 7497 if (reset_devices && h->max_commands > 32) 7498 h->max_commands = 32; 7499 7500 if (h->max_commands < MIN_MAX_COMMANDS) { 7501 dev_warn(&h->pdev->dev, 7502 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n", 7503 h->max_commands, 7504 MIN_MAX_COMMANDS); 7505 h->max_commands = MIN_MAX_COMMANDS; 7506 } 7507} 7508 7509/* If the controller reports that the total max sg entries is greater than 512, 7510 * then we know that chained SG blocks work. (Original smart arrays did not 7511 * support chained SG blocks and would return zero for max sg entries.) 7512 */ 7513static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h) 7514{ 7515 return h->maxsgentries > 512; 7516} 7517 7518/* Interrogate the hardware for some limits: 7519 * max commands, max SG elements without chaining, and with chaining, 7520 * SG chain block size, etc. 7521 */ 7522static void hpsa_find_board_params(struct ctlr_info *h) 7523{ 7524 hpsa_get_max_perf_mode_cmds(h); 7525 h->nr_cmds = h->max_commands; 7526 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); 7527 h->fw_support = readl(&(h->cfgtable->misc_fw_support)); 7528 if (hpsa_supports_chained_sg_blocks(h)) { 7529 /* Limit in-command s/g elements to 32 save dma'able memory. */ 7530 h->max_cmd_sg_entries = 32; 7531 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries; 7532 h->maxsgentries--; /* save one for chain pointer */ 7533 } else { 7534 /* 7535 * Original smart arrays supported at most 31 s/g entries 7536 * embedded inline in the command (trying to use more 7537 * would lock up the controller) 7538 */ 7539 h->max_cmd_sg_entries = 31; 7540 h->maxsgentries = 31; /* default to traditional values */ 7541 h->chainsize = 0; 7542 } 7543 7544 /* Find out what task management functions are supported and cache */ 7545 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags)); 7546 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags)) 7547 dev_warn(&h->pdev->dev, "Physical aborts not supported\n"); 7548 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) 7549 dev_warn(&h->pdev->dev, "Logical aborts not supported\n"); 7550 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)) 7551 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n"); 7552} 7553 7554static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) 7555{ 7556 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { 7557 dev_err(&h->pdev->dev, "not a valid CISS config table\n"); 7558 return false; 7559 } 7560 return true; 7561} 7562 7563static inline void hpsa_set_driver_support_bits(struct ctlr_info *h) 7564{ 7565 u32 driver_support; 7566 7567 driver_support = readl(&(h->cfgtable->driver_support)); 7568 /* Need to enable prefetch in the SCSI core for 6400 in x86 */ 7569#ifdef CONFIG_X86 7570 driver_support |= ENABLE_SCSI_PREFETCH; 7571#endif 7572 driver_support |= ENABLE_UNIT_ATTN; 7573 writel(driver_support, &(h->cfgtable->driver_support)); 7574} 7575 7576/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result 7577 * in a prefetch beyond physical memory. 7578 */ 7579static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) 7580{ 7581 u32 dma_prefetch; 7582 7583 if (h->board_id != 0x3225103C) 7584 return; 7585 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); 7586 dma_prefetch |= 0x8000; 7587 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); 7588} 7589 7590static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h) 7591{ 7592 int i; 7593 u32 doorbell_value; 7594 unsigned long flags; 7595 /* wait until the clear_event_notify bit 6 is cleared by controller. */ 7596 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) { 7597 spin_lock_irqsave(&h->lock, flags); 7598 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7599 spin_unlock_irqrestore(&h->lock, flags); 7600 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS)) 7601 goto done; 7602 /* delay and try again */ 7603 msleep(CLEAR_EVENT_WAIT_INTERVAL); 7604 } 7605 return -ENODEV; 7606done: 7607 return 0; 7608} 7609 7610static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h) 7611{ 7612 int i; 7613 u32 doorbell_value; 7614 unsigned long flags; 7615 7616 /* under certain very rare conditions, this can take awhile. 7617 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right 7618 * as we enter this code.) 7619 */ 7620 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) { 7621 if (h->remove_in_progress) 7622 goto done; 7623 spin_lock_irqsave(&h->lock, flags); 7624 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 7625 spin_unlock_irqrestore(&h->lock, flags); 7626 if (!(doorbell_value & CFGTBL_ChangeReq)) 7627 goto done; 7628 /* delay and try again */ 7629 msleep(MODE_CHANGE_WAIT_INTERVAL); 7630 } 7631 return -ENODEV; 7632done: 7633 return 0; 7634} 7635 7636/* return -ENODEV or other reason on error, 0 on success */ 7637static int hpsa_enter_simple_mode(struct ctlr_info *h) 7638{ 7639 u32 trans_support; 7640 7641 trans_support = readl(&(h->cfgtable->TransportSupport)); 7642 if (!(trans_support & SIMPLE_MODE)) 7643 return -ENOTSUPP; 7644 7645 h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); 7646 7647 /* Update the field, and then ring the doorbell */ 7648 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); 7649 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 7650 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 7651 if (hpsa_wait_for_mode_change_ack(h)) 7652 goto error; 7653 print_cfg_table(&h->pdev->dev, h->cfgtable); 7654 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) 7655 goto error; 7656 h->transMethod = CFGTBL_Trans_Simple; 7657 return 0; 7658error: 7659 dev_err(&h->pdev->dev, "failed to enter simple mode\n"); 7660 return -ENODEV; 7661} 7662 7663/* free items allocated or mapped by hpsa_pci_init */ 7664static void hpsa_free_pci_init(struct ctlr_info *h) 7665{ 7666 hpsa_free_cfgtables(h); /* pci_init 4 */ 7667 iounmap(h->vaddr); /* pci_init 3 */ 7668 h->vaddr = NULL; 7669 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 7670 /* 7671 * call pci_disable_device before pci_release_regions per 7672 * Documentation/PCI/pci.txt 7673 */ 7674 pci_disable_device(h->pdev); /* pci_init 1 */ 7675 pci_release_regions(h->pdev); /* pci_init 2 */ 7676} 7677 7678/* several items must be freed later */ 7679static int hpsa_pci_init(struct ctlr_info *h) 7680{ 7681 int prod_index, err; 7682 7683 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); 7684 if (prod_index < 0) 7685 return prod_index; 7686 h->product_name = products[prod_index].product_name; 7687 h->access = *(products[prod_index].access); 7688 7689 h->needs_abort_tags_swizzled = 7690 ctlr_needs_abort_tags_swizzled(h->board_id); 7691 7692 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | 7693 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); 7694 7695 err = pci_enable_device(h->pdev); 7696 if (err) { 7697 dev_err(&h->pdev->dev, "failed to enable PCI device\n"); 7698 pci_disable_device(h->pdev); 7699 return err; 7700 } 7701 7702 err = pci_request_regions(h->pdev, HPSA); 7703 if (err) { 7704 dev_err(&h->pdev->dev, 7705 "failed to obtain PCI resources\n"); 7706 pci_disable_device(h->pdev); 7707 return err; 7708 } 7709 7710 pci_set_master(h->pdev); 7711 7712 hpsa_interrupt_mode(h); 7713 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); 7714 if (err) 7715 goto clean2; /* intmode+region, pci */ 7716 h->vaddr = remap_pci_mem(h->paddr, 0x250); 7717 if (!h->vaddr) { 7718 dev_err(&h->pdev->dev, "failed to remap PCI mem\n"); 7719 err = -ENOMEM; 7720 goto clean2; /* intmode+region, pci */ 7721 } 7722 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 7723 if (err) 7724 goto clean3; /* vaddr, intmode+region, pci */ 7725 err = hpsa_find_cfgtables(h); 7726 if (err) 7727 goto clean3; /* vaddr, intmode+region, pci */ 7728 hpsa_find_board_params(h); 7729 7730 if (!hpsa_CISS_signature_present(h)) { 7731 err = -ENODEV; 7732 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7733 } 7734 hpsa_set_driver_support_bits(h); 7735 hpsa_p600_dma_prefetch_quirk(h); 7736 err = hpsa_enter_simple_mode(h); 7737 if (err) 7738 goto clean4; /* cfgtables, vaddr, intmode+region, pci */ 7739 return 0; 7740 7741clean4: /* cfgtables, vaddr, intmode+region, pci */ 7742 hpsa_free_cfgtables(h); 7743clean3: /* vaddr, intmode+region, pci */ 7744 iounmap(h->vaddr); 7745 h->vaddr = NULL; 7746clean2: /* intmode+region, pci */ 7747 hpsa_disable_interrupt_mode(h); 7748 /* 7749 * call pci_disable_device before pci_release_regions per 7750 * Documentation/PCI/pci.txt 7751 */ 7752 pci_disable_device(h->pdev); 7753 pci_release_regions(h->pdev); 7754 return err; 7755} 7756 7757static void hpsa_hba_inquiry(struct ctlr_info *h) 7758{ 7759 int rc; 7760 7761#define HBA_INQUIRY_BYTE_COUNT 64 7762 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); 7763 if (!h->hba_inquiry_data) 7764 return; 7765 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, 7766 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); 7767 if (rc != 0) { 7768 kfree(h->hba_inquiry_data); 7769 h->hba_inquiry_data = NULL; 7770 } 7771} 7772 7773static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) 7774{ 7775 int rc, i; 7776 void __iomem *vaddr; 7777 7778 if (!reset_devices) 7779 return 0; 7780 7781 /* kdump kernel is loading, we don't know in which state is 7782 * the pci interface. The dev->enable_cnt is equal zero 7783 * so we call enable+disable, wait a while and switch it on. 7784 */ 7785 rc = pci_enable_device(pdev); 7786 if (rc) { 7787 dev_warn(&pdev->dev, "Failed to enable PCI device\n"); 7788 return -ENODEV; 7789 } 7790 pci_disable_device(pdev); 7791 msleep(260); /* a randomly chosen number */ 7792 rc = pci_enable_device(pdev); 7793 if (rc) { 7794 dev_warn(&pdev->dev, "failed to enable device.\n"); 7795 return -ENODEV; 7796 } 7797 7798 pci_set_master(pdev); 7799 7800 vaddr = pci_ioremap_bar(pdev, 0); 7801 if (vaddr == NULL) { 7802 rc = -ENOMEM; 7803 goto out_disable; 7804 } 7805 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET); 7806 iounmap(vaddr); 7807 7808 /* Reset the controller with a PCI power-cycle or via doorbell */ 7809 rc = hpsa_kdump_hard_reset_controller(pdev, board_id); 7810 7811 /* -ENOTSUPP here means we cannot reset the controller 7812 * but it's already (and still) up and running in 7813 * "performant mode". Or, it might be 640x, which can't reset 7814 * due to concerns about shared bbwc between 6402/6404 pair. 7815 */ 7816 if (rc) 7817 goto out_disable; 7818 7819 /* Now try to get the controller to respond to a no-op */ 7820 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n"); 7821 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { 7822 if (hpsa_noop(pdev) == 0) 7823 break; 7824 else 7825 dev_warn(&pdev->dev, "no-op failed%s\n", 7826 (i < 11 ? "; re-trying" : "")); 7827 } 7828 7829out_disable: 7830 7831 pci_disable_device(pdev); 7832 return rc; 7833} 7834 7835static void hpsa_free_cmd_pool(struct ctlr_info *h) 7836{ 7837 kfree(h->cmd_pool_bits); 7838 h->cmd_pool_bits = NULL; 7839 if (h->cmd_pool) { 7840 pci_free_consistent(h->pdev, 7841 h->nr_cmds * sizeof(struct CommandList), 7842 h->cmd_pool, 7843 h->cmd_pool_dhandle); 7844 h->cmd_pool = NULL; 7845 h->cmd_pool_dhandle = 0; 7846 } 7847 if (h->errinfo_pool) { 7848 pci_free_consistent(h->pdev, 7849 h->nr_cmds * sizeof(struct ErrorInfo), 7850 h->errinfo_pool, 7851 h->errinfo_pool_dhandle); 7852 h->errinfo_pool = NULL; 7853 h->errinfo_pool_dhandle = 0; 7854 } 7855} 7856 7857static int hpsa_alloc_cmd_pool(struct ctlr_info *h) 7858{ 7859 h->cmd_pool_bits = kzalloc( 7860 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * 7861 sizeof(unsigned long), GFP_KERNEL); 7862 h->cmd_pool = pci_alloc_consistent(h->pdev, 7863 h->nr_cmds * sizeof(*h->cmd_pool), 7864 &(h->cmd_pool_dhandle)); 7865 h->errinfo_pool = pci_alloc_consistent(h->pdev, 7866 h->nr_cmds * sizeof(*h->errinfo_pool), 7867 &(h->errinfo_pool_dhandle)); 7868 if ((h->cmd_pool_bits == NULL) 7869 || (h->cmd_pool == NULL) 7870 || (h->errinfo_pool == NULL)) { 7871 dev_err(&h->pdev->dev, "out of memory in %s", __func__); 7872 goto clean_up; 7873 } 7874 hpsa_preinitialize_commands(h); 7875 return 0; 7876clean_up: 7877 hpsa_free_cmd_pool(h); 7878 return -ENOMEM; 7879} 7880 7881static void hpsa_irq_affinity_hints(struct ctlr_info *h) 7882{ 7883 int i, cpu; 7884 7885 cpu = cpumask_first(cpu_online_mask); 7886 for (i = 0; i < h->msix_vector; i++) { 7887 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu)); 7888 cpu = cpumask_next(cpu, cpu_online_mask); 7889 } 7890} 7891 7892/* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */ 7893static void hpsa_free_irqs(struct ctlr_info *h) 7894{ 7895 int i; 7896 7897 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) { 7898 /* Single reply queue, only one irq to free */ 7899 i = h->intr_mode; 7900 irq_set_affinity_hint(h->intr[i], NULL); 7901 free_irq(h->intr[i], &h->q[i]); 7902 h->q[i] = 0; 7903 return; 7904 } 7905 7906 for (i = 0; i < h->msix_vector; i++) { 7907 irq_set_affinity_hint(h->intr[i], NULL); 7908 free_irq(h->intr[i], &h->q[i]); 7909 h->q[i] = 0; 7910 } 7911 for (; i < MAX_REPLY_QUEUES; i++) 7912 h->q[i] = 0; 7913} 7914 7915/* returns 0 on success; cleans up and returns -Enn on error */ 7916static int hpsa_request_irqs(struct ctlr_info *h, 7917 irqreturn_t (*msixhandler)(int, void *), 7918 irqreturn_t (*intxhandler)(int, void *)) 7919{ 7920 int rc, i; 7921 7922 /* 7923 * initialize h->q[x] = x so that interrupt handlers know which 7924 * queue to process. 7925 */ 7926 for (i = 0; i < MAX_REPLY_QUEUES; i++) 7927 h->q[i] = (u8) i; 7928 7929 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) { 7930 /* If performant mode and MSI-X, use multiple reply queues */ 7931 for (i = 0; i < h->msix_vector; i++) { 7932 sprintf(h->intrname[i], "%s-msix%d", h->devname, i); 7933 rc = request_irq(h->intr[i], msixhandler, 7934 0, h->intrname[i], 7935 &h->q[i]); 7936 if (rc) { 7937 int j; 7938 7939 dev_err(&h->pdev->dev, 7940 "failed to get irq %d for %s\n", 7941 h->intr[i], h->devname); 7942 for (j = 0; j < i; j++) { 7943 free_irq(h->intr[j], &h->q[j]); 7944 h->q[j] = 0; 7945 } 7946 for (; j < MAX_REPLY_QUEUES; j++) 7947 h->q[j] = 0; 7948 return rc; 7949 } 7950 } 7951 hpsa_irq_affinity_hints(h); 7952 } else { 7953 /* Use single reply pool */ 7954 if (h->msix_vector > 0 || h->msi_vector) { 7955 if (h->msix_vector) 7956 sprintf(h->intrname[h->intr_mode], 7957 "%s-msix", h->devname); 7958 else 7959 sprintf(h->intrname[h->intr_mode], 7960 "%s-msi", h->devname); 7961 rc = request_irq(h->intr[h->intr_mode], 7962 msixhandler, 0, 7963 h->intrname[h->intr_mode], 7964 &h->q[h->intr_mode]); 7965 } else { 7966 sprintf(h->intrname[h->intr_mode], 7967 "%s-intx", h->devname); 7968 rc = request_irq(h->intr[h->intr_mode], 7969 intxhandler, IRQF_SHARED, 7970 h->intrname[h->intr_mode], 7971 &h->q[h->intr_mode]); 7972 } 7973 irq_set_affinity_hint(h->intr[h->intr_mode], NULL); 7974 } 7975 if (rc) { 7976 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n", 7977 h->intr[h->intr_mode], h->devname); 7978 hpsa_free_irqs(h); 7979 return -ENODEV; 7980 } 7981 return 0; 7982} 7983 7984static int hpsa_kdump_soft_reset(struct ctlr_info *h) 7985{ 7986 int rc; 7987 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER); 7988 7989 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); 7990 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY); 7991 if (rc) { 7992 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); 7993 return rc; 7994 } 7995 7996 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); 7997 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 7998 if (rc) { 7999 dev_warn(&h->pdev->dev, "Board failed to become ready " 8000 "after soft reset.\n"); 8001 return rc; 8002 } 8003 8004 return 0; 8005} 8006 8007static void hpsa_free_reply_queues(struct ctlr_info *h) 8008{ 8009 int i; 8010 8011 for (i = 0; i < h->nreply_queues; i++) { 8012 if (!h->reply_queue[i].head) 8013 continue; 8014 pci_free_consistent(h->pdev, 8015 h->reply_queue_size, 8016 h->reply_queue[i].head, 8017 h->reply_queue[i].busaddr); 8018 h->reply_queue[i].head = NULL; 8019 h->reply_queue[i].busaddr = 0; 8020 } 8021 h->reply_queue_size = 0; 8022} 8023 8024static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) 8025{ 8026 hpsa_free_performant_mode(h); /* init_one 7 */ 8027 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 8028 hpsa_free_cmd_pool(h); /* init_one 5 */ 8029 hpsa_free_irqs(h); /* init_one 4 */ 8030 scsi_host_put(h->scsi_host); /* init_one 3 */ 8031 h->scsi_host = NULL; /* init_one 3 */ 8032 hpsa_free_pci_init(h); /* init_one 2_5 */ 8033 free_percpu(h->lockup_detected); /* init_one 2 */ 8034 h->lockup_detected = NULL; /* init_one 2 */ 8035 if (h->resubmit_wq) { 8036 destroy_workqueue(h->resubmit_wq); /* init_one 1 */ 8037 h->resubmit_wq = NULL; 8038 } 8039 if (h->rescan_ctlr_wq) { 8040 destroy_workqueue(h->rescan_ctlr_wq); 8041 h->rescan_ctlr_wq = NULL; 8042 } 8043 kfree(h); /* init_one 1 */ 8044} 8045 8046/* Called when controller lockup detected. */ 8047static void fail_all_outstanding_cmds(struct ctlr_info *h) 8048{ 8049 int i, refcount; 8050 struct CommandList *c; 8051 int failcount = 0; 8052 8053 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ 8054 for (i = 0; i < h->nr_cmds; i++) { 8055 c = h->cmd_pool + i; 8056 refcount = atomic_inc_return(&c->refcount); 8057 if (refcount > 1) { 8058 c->err_info->CommandStatus = CMD_CTLR_LOCKUP; 8059 finish_cmd(c); 8060 atomic_dec(&h->commands_outstanding); 8061 failcount++; 8062 } 8063 cmd_free(h, c); 8064 } 8065 dev_warn(&h->pdev->dev, 8066 "failed %d commands in fail_all\n", failcount); 8067} 8068 8069static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) 8070{ 8071 int cpu; 8072 8073 for_each_online_cpu(cpu) { 8074 u32 *lockup_detected; 8075 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu); 8076 *lockup_detected = value; 8077 } 8078 wmb(); /* be sure the per-cpu variables are out to memory */ 8079} 8080 8081static void controller_lockup_detected(struct ctlr_info *h) 8082{ 8083 unsigned long flags; 8084 u32 lockup_detected; 8085 8086 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8087 spin_lock_irqsave(&h->lock, flags); 8088 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); 8089 if (!lockup_detected) { 8090 /* no heartbeat, but controller gave us a zero. */ 8091 dev_warn(&h->pdev->dev, 8092 "lockup detected after %d but scratchpad register is zero\n", 8093 h->heartbeat_sample_interval / HZ); 8094 lockup_detected = 0xffffffff; 8095 } 8096 set_lockup_detected_for_all_cpus(h, lockup_detected); 8097 spin_unlock_irqrestore(&h->lock, flags); 8098 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n", 8099 lockup_detected, h->heartbeat_sample_interval / HZ); 8100 pci_disable_device(h->pdev); 8101 fail_all_outstanding_cmds(h); 8102} 8103 8104static int detect_controller_lockup(struct ctlr_info *h) 8105{ 8106 u64 now; 8107 u32 heartbeat; 8108 unsigned long flags; 8109 8110 now = get_jiffies_64(); 8111 /* If we've received an interrupt recently, we're ok. */ 8112 if (time_after64(h->last_intr_timestamp + 8113 (h->heartbeat_sample_interval), now)) 8114 return false; 8115 8116 /* 8117 * If we've already checked the heartbeat recently, we're ok. 8118 * This could happen if someone sends us a signal. We 8119 * otherwise don't care about signals in this thread. 8120 */ 8121 if (time_after64(h->last_heartbeat_timestamp + 8122 (h->heartbeat_sample_interval), now)) 8123 return false; 8124 8125 /* If heartbeat has not changed since we last looked, we're not ok. */ 8126 spin_lock_irqsave(&h->lock, flags); 8127 heartbeat = readl(&h->cfgtable->HeartBeat); 8128 spin_unlock_irqrestore(&h->lock, flags); 8129 if (h->last_heartbeat == heartbeat) { 8130 controller_lockup_detected(h); 8131 return true; 8132 } 8133 8134 /* We're ok. */ 8135 h->last_heartbeat = heartbeat; 8136 h->last_heartbeat_timestamp = now; 8137 return false; 8138} 8139 8140static void hpsa_ack_ctlr_events(struct ctlr_info *h) 8141{ 8142 int i; 8143 char *event_type; 8144 8145 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8146 return; 8147 8148 /* Ask the controller to clear the events we're handling. */ 8149 if ((h->transMethod & (CFGTBL_Trans_io_accel1 8150 | CFGTBL_Trans_io_accel2)) && 8151 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE || 8152 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) { 8153 8154 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE) 8155 event_type = "state change"; 8156 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE) 8157 event_type = "configuration change"; 8158 /* Stop sending new RAID offload reqs via the IO accelerator */ 8159 scsi_block_requests(h->scsi_host); 8160 for (i = 0; i < h->ndevices; i++) 8161 h->dev[i]->offload_enabled = 0; 8162 hpsa_drain_accel_commands(h); 8163 /* Set 'accelerator path config change' bit */ 8164 dev_warn(&h->pdev->dev, 8165 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n", 8166 h->events, event_type); 8167 writel(h->events, &(h->cfgtable->clear_event_notify)); 8168 /* Set the "clear event notify field update" bit 6 */ 8169 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8170 /* Wait until ctlr clears 'clear event notify field', bit 6 */ 8171 hpsa_wait_for_clear_event_notify_ack(h); 8172 scsi_unblock_requests(h->scsi_host); 8173 } else { 8174 /* Acknowledge controller notification events. */ 8175 writel(h->events, &(h->cfgtable->clear_event_notify)); 8176 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL); 8177 hpsa_wait_for_clear_event_notify_ack(h); 8178#if 0 8179 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 8180 hpsa_wait_for_mode_change_ack(h); 8181#endif 8182 } 8183 return; 8184} 8185 8186/* Check a register on the controller to see if there are configuration 8187 * changes (added/changed/removed logical drives, etc.) which mean that 8188 * we should rescan the controller for devices. 8189 * Also check flag for driver-initiated rescan. 8190 */ 8191static int hpsa_ctlr_needs_rescan(struct ctlr_info *h) 8192{ 8193 if (h->drv_req_rescan) { 8194 h->drv_req_rescan = 0; 8195 return 1; 8196 } 8197 8198 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) 8199 return 0; 8200 8201 h->events = readl(&(h->cfgtable->event_notify)); 8202 return h->events & RESCAN_REQUIRED_EVENT_BITS; 8203} 8204 8205/* 8206 * Check if any of the offline devices have become ready 8207 */ 8208static int hpsa_offline_devices_ready(struct ctlr_info *h) 8209{ 8210 unsigned long flags; 8211 struct offline_device_entry *d; 8212 struct list_head *this, *tmp; 8213 8214 spin_lock_irqsave(&h->offline_device_lock, flags); 8215 list_for_each_safe(this, tmp, &h->offline_device_list) { 8216 d = list_entry(this, struct offline_device_entry, 8217 offline_list); 8218 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8219 if (!hpsa_volume_offline(h, d->scsi3addr)) { 8220 spin_lock_irqsave(&h->offline_device_lock, flags); 8221 list_del(&d->offline_list); 8222 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8223 return 1; 8224 } 8225 spin_lock_irqsave(&h->offline_device_lock, flags); 8226 } 8227 spin_unlock_irqrestore(&h->offline_device_lock, flags); 8228 return 0; 8229} 8230 8231static int hpsa_luns_changed(struct ctlr_info *h) 8232{ 8233 int rc = 1; /* assume there are changes */ 8234 struct ReportLUNdata *logdev = NULL; 8235 8236 /* if we can't find out if lun data has changed, 8237 * assume that it has. 8238 */ 8239 8240 if (!h->lastlogicals) 8241 goto out; 8242 8243 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL); 8244 if (!logdev) { 8245 dev_warn(&h->pdev->dev, 8246 "Out of memory, can't track lun changes.\n"); 8247 goto out; 8248 } 8249 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) { 8250 dev_warn(&h->pdev->dev, 8251 "report luns failed, can't track lun changes.\n"); 8252 goto out; 8253 } 8254 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) { 8255 dev_info(&h->pdev->dev, 8256 "Lun changes detected.\n"); 8257 memcpy(h->lastlogicals, logdev, sizeof(*logdev)); 8258 goto out; 8259 } else 8260 rc = 0; /* no changes detected. */ 8261out: 8262 kfree(logdev); 8263 return rc; 8264} 8265 8266static void hpsa_rescan_ctlr_worker(struct work_struct *work) 8267{ 8268 unsigned long flags; 8269 struct ctlr_info *h = container_of(to_delayed_work(work), 8270 struct ctlr_info, rescan_ctlr_work); 8271 8272 8273 if (h->remove_in_progress) 8274 return; 8275 8276 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) { 8277 scsi_host_get(h->scsi_host); 8278 hpsa_ack_ctlr_events(h); 8279 hpsa_scan_start(h->scsi_host); 8280 scsi_host_put(h->scsi_host); 8281 } else if (h->discovery_polling) { 8282 hpsa_disable_rld_caching(h); 8283 if (hpsa_luns_changed(h)) { 8284 struct Scsi_Host *sh = NULL; 8285 8286 dev_info(&h->pdev->dev, 8287 "driver discovery polling rescan.\n"); 8288 sh = scsi_host_get(h->scsi_host); 8289 if (sh != NULL) { 8290 hpsa_scan_start(sh); 8291 scsi_host_put(sh); 8292 } 8293 } 8294 } 8295 spin_lock_irqsave(&h->lock, flags); 8296 if (!h->remove_in_progress) 8297 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8298 h->heartbeat_sample_interval); 8299 spin_unlock_irqrestore(&h->lock, flags); 8300} 8301 8302static void hpsa_monitor_ctlr_worker(struct work_struct *work) 8303{ 8304 unsigned long flags; 8305 struct ctlr_info *h = container_of(to_delayed_work(work), 8306 struct ctlr_info, monitor_ctlr_work); 8307 8308 detect_controller_lockup(h); 8309 if (lockup_detected(h)) 8310 return; 8311 8312 spin_lock_irqsave(&h->lock, flags); 8313 if (!h->remove_in_progress) 8314 schedule_delayed_work(&h->monitor_ctlr_work, 8315 h->heartbeat_sample_interval); 8316 spin_unlock_irqrestore(&h->lock, flags); 8317} 8318 8319static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h, 8320 char *name) 8321{ 8322 struct workqueue_struct *wq = NULL; 8323 8324 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr); 8325 if (!wq) 8326 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name); 8327 8328 return wq; 8329} 8330 8331static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 8332{ 8333 int dac, rc; 8334 struct ctlr_info *h; 8335 int try_soft_reset = 0; 8336 unsigned long flags; 8337 u32 board_id; 8338 8339 if (number_of_controllers == 0) 8340 printk(KERN_INFO DRIVER_NAME "\n"); 8341 8342 rc = hpsa_lookup_board_id(pdev, &board_id); 8343 if (rc < 0) { 8344 dev_warn(&pdev->dev, "Board ID not found\n"); 8345 return rc; 8346 } 8347 8348 rc = hpsa_init_reset_devices(pdev, board_id); 8349 if (rc) { 8350 if (rc != -ENOTSUPP) 8351 return rc; 8352 /* If the reset fails in a particular way (it has no way to do 8353 * a proper hard reset, so returns -ENOTSUPP) we can try to do 8354 * a soft reset once we get the controller configured up to the 8355 * point that it can accept a command. 8356 */ 8357 try_soft_reset = 1; 8358 rc = 0; 8359 } 8360 8361reinit_after_soft_reset: 8362 8363 /* Command structures must be aligned on a 32-byte boundary because 8364 * the 5 lower bits of the address are used by the hardware. and by 8365 * the driver. See comments in hpsa.h for more info. 8366 */ 8367 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); 8368 h = kzalloc(sizeof(*h), GFP_KERNEL); 8369 if (!h) { 8370 dev_err(&pdev->dev, "Failed to allocate controller head\n"); 8371 return -ENOMEM; 8372 } 8373 8374 h->pdev = pdev; 8375 8376 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; 8377 INIT_LIST_HEAD(&h->offline_device_list); 8378 spin_lock_init(&h->lock); 8379 spin_lock_init(&h->offline_device_lock); 8380 spin_lock_init(&h->scan_lock); 8381 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); 8382 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS); 8383 8384 /* Allocate and clear per-cpu variable lockup_detected */ 8385 h->lockup_detected = alloc_percpu(u32); 8386 if (!h->lockup_detected) { 8387 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); 8388 rc = -ENOMEM; 8389 goto clean1; /* aer/h */ 8390 } 8391 set_lockup_detected_for_all_cpus(h, 0); 8392 8393 rc = hpsa_pci_init(h); 8394 if (rc) 8395 goto clean2; /* lu, aer/h */ 8396 8397 /* relies on h-> settings made by hpsa_pci_init, including 8398 * interrupt_mode h->intr */ 8399 rc = hpsa_scsi_host_alloc(h); 8400 if (rc) 8401 goto clean2_5; /* pci, lu, aer/h */ 8402 8403 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no); 8404 h->ctlr = number_of_controllers; 8405 number_of_controllers++; 8406 8407 /* configure PCI DMA stuff */ 8408 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 8409 if (rc == 0) { 8410 dac = 1; 8411 } else { 8412 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8413 if (rc == 0) { 8414 dac = 0; 8415 } else { 8416 dev_err(&pdev->dev, "no suitable DMA available\n"); 8417 goto clean3; /* shost, pci, lu, aer/h */ 8418 } 8419 } 8420 8421 /* make sure the board interrupts are off */ 8422 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8423 8424 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); 8425 if (rc) 8426 goto clean3; /* shost, pci, lu, aer/h */ 8427 rc = hpsa_alloc_cmd_pool(h); 8428 if (rc) 8429 goto clean4; /* irq, shost, pci, lu, aer/h */ 8430 rc = hpsa_alloc_sg_chain_blocks(h); 8431 if (rc) 8432 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ 8433 init_waitqueue_head(&h->scan_wait_queue); 8434 init_waitqueue_head(&h->abort_cmd_wait_queue); 8435 init_waitqueue_head(&h->event_sync_wait_queue); 8436 mutex_init(&h->reset_mutex); 8437 h->scan_finished = 1; /* no scan currently in progress */ 8438 8439 pci_set_drvdata(pdev, h); 8440 h->ndevices = 0; 8441 8442 spin_lock_init(&h->devlock); 8443 rc = hpsa_put_ctlr_into_performant_mode(h); 8444 if (rc) 8445 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */ 8446 8447 /* hook into SCSI subsystem */ 8448 rc = hpsa_scsi_add_host(h); 8449 if (rc) 8450 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8451 8452 /* create the resubmit workqueue */ 8453 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); 8454 if (!h->rescan_ctlr_wq) { 8455 rc = -ENOMEM; 8456 goto clean7; 8457 } 8458 8459 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); 8460 if (!h->resubmit_wq) { 8461 rc = -ENOMEM; 8462 goto clean7; /* aer/h */ 8463 } 8464 8465 /* 8466 * At this point, the controller is ready to take commands. 8467 * Now, if reset_devices and the hard reset didn't work, try 8468 * the soft reset and see if that works. 8469 */ 8470 if (try_soft_reset) { 8471 8472 /* This is kind of gross. We may or may not get a completion 8473 * from the soft reset command, and if we do, then the value 8474 * from the fifo may or may not be valid. So, we wait 10 secs 8475 * after the reset throwing away any completions we get during 8476 * that time. Unregister the interrupt handler and register 8477 * fake ones to scoop up any residual completions. 8478 */ 8479 spin_lock_irqsave(&h->lock, flags); 8480 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8481 spin_unlock_irqrestore(&h->lock, flags); 8482 hpsa_free_irqs(h); 8483 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions, 8484 hpsa_intx_discard_completions); 8485 if (rc) { 8486 dev_warn(&h->pdev->dev, 8487 "Failed to request_irq after soft reset.\n"); 8488 /* 8489 * cannot goto clean7 or free_irqs will be called 8490 * again. Instead, do its work 8491 */ 8492 hpsa_free_performant_mode(h); /* clean7 */ 8493 hpsa_free_sg_chain_blocks(h); /* clean6 */ 8494 hpsa_free_cmd_pool(h); /* clean5 */ 8495 /* 8496 * skip hpsa_free_irqs(h) clean4 since that 8497 * was just called before request_irqs failed 8498 */ 8499 goto clean3; 8500 } 8501 8502 rc = hpsa_kdump_soft_reset(h); 8503 if (rc) 8504 /* Neither hard nor soft reset worked, we're hosed. */ 8505 goto clean7; 8506 8507 dev_info(&h->pdev->dev, "Board READY.\n"); 8508 dev_info(&h->pdev->dev, 8509 "Waiting for stale completions to drain.\n"); 8510 h->access.set_intr_mask(h, HPSA_INTR_ON); 8511 msleep(10000); 8512 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8513 8514 rc = controller_reset_failed(h->cfgtable); 8515 if (rc) 8516 dev_info(&h->pdev->dev, 8517 "Soft reset appears to have failed.\n"); 8518 8519 /* since the controller's reset, we have to go back and re-init 8520 * everything. Easiest to just forget what we've done and do it 8521 * all over again. 8522 */ 8523 hpsa_undo_allocations_after_kdump_soft_reset(h); 8524 try_soft_reset = 0; 8525 if (rc) 8526 /* don't goto clean, we already unallocated */ 8527 return -ENODEV; 8528 8529 goto reinit_after_soft_reset; 8530 } 8531 8532 /* Enable Accelerated IO path at driver layer */ 8533 h->acciopath_status = 1; 8534 /* Disable discovery polling.*/ 8535 h->discovery_polling = 0; 8536 8537 8538 /* Turn the interrupts on so we can service requests */ 8539 h->access.set_intr_mask(h, HPSA_INTR_ON); 8540 8541 hpsa_hba_inquiry(h); 8542 8543 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); 8544 if (!h->lastlogicals) 8545 dev_info(&h->pdev->dev, 8546 "Can't track change to report lun data\n"); 8547 8548 /* Monitor the controller for firmware lockups */ 8549 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; 8550 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker); 8551 schedule_delayed_work(&h->monitor_ctlr_work, 8552 h->heartbeat_sample_interval); 8553 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker); 8554 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, 8555 h->heartbeat_sample_interval); 8556 return 0; 8557 8558clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ 8559 hpsa_free_performant_mode(h); 8560 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8561clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ 8562 hpsa_free_sg_chain_blocks(h); 8563clean5: /* cmd, irq, shost, pci, lu, aer/h */ 8564 hpsa_free_cmd_pool(h); 8565clean4: /* irq, shost, pci, lu, aer/h */ 8566 hpsa_free_irqs(h); 8567clean3: /* shost, pci, lu, aer/h */ 8568 scsi_host_put(h->scsi_host); 8569 h->scsi_host = NULL; 8570clean2_5: /* pci, lu, aer/h */ 8571 hpsa_free_pci_init(h); 8572clean2: /* lu, aer/h */ 8573 if (h->lockup_detected) { 8574 free_percpu(h->lockup_detected); 8575 h->lockup_detected = NULL; 8576 } 8577clean1: /* wq/aer/h */ 8578 if (h->resubmit_wq) { 8579 destroy_workqueue(h->resubmit_wq); 8580 h->resubmit_wq = NULL; 8581 } 8582 if (h->rescan_ctlr_wq) { 8583 destroy_workqueue(h->rescan_ctlr_wq); 8584 h->rescan_ctlr_wq = NULL; 8585 } 8586 kfree(h); 8587 return rc; 8588} 8589 8590static void hpsa_flush_cache(struct ctlr_info *h) 8591{ 8592 char *flush_buf; 8593 struct CommandList *c; 8594 int rc; 8595 8596 if (unlikely(lockup_detected(h))) 8597 return; 8598 flush_buf = kzalloc(4, GFP_KERNEL); 8599 if (!flush_buf) 8600 return; 8601 8602 c = cmd_alloc(h); 8603 8604 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, 8605 RAID_CTLR_LUNID, TYPE_CMD)) { 8606 goto out; 8607 } 8608 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 8609 PCI_DMA_TODEVICE, NO_TIMEOUT); 8610 if (rc) 8611 goto out; 8612 if (c->err_info->CommandStatus != 0) 8613out: 8614 dev_warn(&h->pdev->dev, 8615 "error flushing cache on controller\n"); 8616 cmd_free(h, c); 8617 kfree(flush_buf); 8618} 8619 8620/* Make controller gather fresh report lun data each time we 8621 * send down a report luns request 8622 */ 8623static void hpsa_disable_rld_caching(struct ctlr_info *h) 8624{ 8625 u32 *options; 8626 struct CommandList *c; 8627 int rc; 8628 8629 /* Don't bother trying to set diag options if locked up */ 8630 if (unlikely(h->lockup_detected)) 8631 return; 8632 8633 options = kzalloc(sizeof(*options), GFP_KERNEL); 8634 if (!options) { 8635 dev_err(&h->pdev->dev, 8636 "Error: failed to disable rld caching, during alloc.\n"); 8637 return; 8638 } 8639 8640 c = cmd_alloc(h); 8641 8642 /* first, get the current diag options settings */ 8643 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8644 RAID_CTLR_LUNID, TYPE_CMD)) 8645 goto errout; 8646 8647 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 8648 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 8649 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8650 goto errout; 8651 8652 /* Now, set the bit for disabling the RLD caching */ 8653 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING; 8654 8655 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0, 8656 RAID_CTLR_LUNID, TYPE_CMD)) 8657 goto errout; 8658 8659 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 8660 PCI_DMA_TODEVICE, NO_TIMEOUT); 8661 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8662 goto errout; 8663 8664 /* Now verify that it got set: */ 8665 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, 8666 RAID_CTLR_LUNID, TYPE_CMD)) 8667 goto errout; 8668 8669 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, 8670 PCI_DMA_FROMDEVICE, NO_TIMEOUT); 8671 if ((rc != 0) || (c->err_info->CommandStatus != 0)) 8672 goto errout; 8673 8674 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING) 8675 goto out; 8676 8677errout: 8678 dev_err(&h->pdev->dev, 8679 "Error: failed to disable report lun data caching.\n"); 8680out: 8681 cmd_free(h, c); 8682 kfree(options); 8683} 8684 8685static void hpsa_shutdown(struct pci_dev *pdev) 8686{ 8687 struct ctlr_info *h; 8688 8689 h = pci_get_drvdata(pdev); 8690 /* Turn board interrupts off and send the flush cache command 8691 * sendcmd will turn off interrupt, and send the flush... 8692 * To write all data in the battery backed cache to disks 8693 */ 8694 hpsa_flush_cache(h); 8695 h->access.set_intr_mask(h, HPSA_INTR_OFF); 8696 hpsa_free_irqs(h); /* init_one 4 */ 8697 hpsa_disable_interrupt_mode(h); /* pci_init 2 */ 8698} 8699 8700static void hpsa_free_device_info(struct ctlr_info *h) 8701{ 8702 int i; 8703 8704 for (i = 0; i < h->ndevices; i++) { 8705 kfree(h->dev[i]); 8706 h->dev[i] = NULL; 8707 } 8708} 8709 8710static void hpsa_remove_one(struct pci_dev *pdev) 8711{ 8712 struct ctlr_info *h; 8713 unsigned long flags; 8714 8715 if (pci_get_drvdata(pdev) == NULL) { 8716 dev_err(&pdev->dev, "unable to remove device\n"); 8717 return; 8718 } 8719 h = pci_get_drvdata(pdev); 8720 8721 /* Get rid of any controller monitoring work items */ 8722 spin_lock_irqsave(&h->lock, flags); 8723 h->remove_in_progress = 1; 8724 spin_unlock_irqrestore(&h->lock, flags); 8725 cancel_delayed_work_sync(&h->monitor_ctlr_work); 8726 cancel_delayed_work_sync(&h->rescan_ctlr_work); 8727 destroy_workqueue(h->rescan_ctlr_wq); 8728 destroy_workqueue(h->resubmit_wq); 8729 8730 /* 8731 * Call before disabling interrupts. 8732 * scsi_remove_host can trigger I/O operations especially 8733 * when multipath is enabled. There can be SYNCHRONIZE CACHE 8734 * operations which cannot complete and will hang the system. 8735 */ 8736 if (h->scsi_host) 8737 scsi_remove_host(h->scsi_host); /* init_one 8 */ 8738 /* includes hpsa_free_irqs - init_one 4 */ 8739 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 8740 hpsa_shutdown(pdev); 8741 8742 hpsa_free_device_info(h); /* scan */ 8743 8744 kfree(h->hba_inquiry_data); /* init_one 10 */ 8745 h->hba_inquiry_data = NULL; /* init_one 10 */ 8746 hpsa_free_ioaccel2_sg_chain_blocks(h); 8747 hpsa_free_performant_mode(h); /* init_one 7 */ 8748 hpsa_free_sg_chain_blocks(h); /* init_one 6 */ 8749 hpsa_free_cmd_pool(h); /* init_one 5 */ 8750 kfree(h->lastlogicals); 8751 8752 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */ 8753 8754 scsi_host_put(h->scsi_host); /* init_one 3 */ 8755 h->scsi_host = NULL; /* init_one 3 */ 8756 8757 /* includes hpsa_disable_interrupt_mode - pci_init 2 */ 8758 hpsa_free_pci_init(h); /* init_one 2.5 */ 8759 8760 free_percpu(h->lockup_detected); /* init_one 2 */ 8761 h->lockup_detected = NULL; /* init_one 2 */ 8762 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */ 8763 8764 hpsa_delete_sas_host(h); 8765 8766 kfree(h); /* init_one 1 */ 8767} 8768 8769static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, 8770 __attribute__((unused)) pm_message_t state) 8771{ 8772 return -ENOSYS; 8773} 8774 8775static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) 8776{ 8777 return -ENOSYS; 8778} 8779 8780static struct pci_driver hpsa_pci_driver = { 8781 .name = HPSA, 8782 .probe = hpsa_init_one, 8783 .remove = hpsa_remove_one, 8784 .id_table = hpsa_pci_device_id, /* id_table */ 8785 .shutdown = hpsa_shutdown, 8786 .suspend = hpsa_suspend, 8787 .resume = hpsa_resume, 8788}; 8789 8790/* Fill in bucket_map[], given nsgs (the max number of 8791 * scatter gather elements supported) and bucket[], 8792 * which is an array of 8 integers. The bucket[] array 8793 * contains 8 different DMA transfer sizes (in 16 8794 * byte increments) which the controller uses to fetch 8795 * commands. This function fills in bucket_map[], which 8796 * maps a given number of scatter gather elements to one of 8797 * the 8 DMA transfer sizes. The point of it is to allow the 8798 * controller to only do as much DMA as needed to fetch the 8799 * command, with the DMA transfer size encoded in the lower 8800 * bits of the command address. 8801 */ 8802static void calc_bucket_map(int bucket[], int num_buckets, 8803 int nsgs, int min_blocks, u32 *bucket_map) 8804{ 8805 int i, j, b, size; 8806 8807 /* Note, bucket_map must have nsgs+1 entries. */ 8808 for (i = 0; i <= nsgs; i++) { 8809 /* Compute size of a command with i SG entries */ 8810 size = i + min_blocks; 8811 b = num_buckets; /* Assume the biggest bucket */ 8812 /* Find the bucket that is just big enough */ 8813 for (j = 0; j < num_buckets; j++) { 8814 if (bucket[j] >= size) { 8815 b = j; 8816 break; 8817 } 8818 } 8819 /* for a command with i SG entries, use bucket b. */ 8820 bucket_map[i] = b; 8821 } 8822} 8823 8824/* 8825 * return -ENODEV on err, 0 on success (or no action) 8826 * allocates numerous items that must be freed later 8827 */ 8828static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) 8829{ 8830 int i; 8831 unsigned long register_value; 8832 unsigned long transMethod = CFGTBL_Trans_Performant | 8833 (trans_support & CFGTBL_Trans_use_short_tags) | 8834 CFGTBL_Trans_enable_directed_msix | 8835 (trans_support & (CFGTBL_Trans_io_accel1 | 8836 CFGTBL_Trans_io_accel2)); 8837 struct access_method access = SA5_performant_access; 8838 8839 /* This is a bit complicated. There are 8 registers on 8840 * the controller which we write to to tell it 8 different 8841 * sizes of commands which there may be. It's a way of 8842 * reducing the DMA done to fetch each command. Encoded into 8843 * each command's tag are 3 bits which communicate to the controller 8844 * which of the eight sizes that command fits within. The size of 8845 * each command depends on how many scatter gather entries there are. 8846 * Each SG entry requires 16 bytes. The eight registers are programmed 8847 * with the number of 16-byte blocks a command of that size requires. 8848 * The smallest command possible requires 5 such 16 byte blocks. 8849 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte 8850 * blocks. Note, this only extends to the SG entries contained 8851 * within the command block, and does not extend to chained blocks 8852 * of SG elements. bft[] contains the eight values we write to 8853 * the registers. They are not evenly distributed, but have more 8854 * sizes for small commands, and fewer sizes for larger commands. 8855 */ 8856 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4}; 8857#define MIN_IOACCEL2_BFT_ENTRY 5 8858#define HPSA_IOACCEL2_HEADER_SZ 4 8859 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12, 8860 13, 14, 15, 16, 17, 18, 19, 8861 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES}; 8862 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16); 8863 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8); 8864 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) > 8865 16 * MIN_IOACCEL2_BFT_ENTRY); 8866 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16); 8867 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4); 8868 /* 5 = 1 s/g entry or 4k 8869 * 6 = 2 s/g entry or 8k 8870 * 8 = 4 s/g entry or 16k 8871 * 10 = 6 s/g entry or 24k 8872 */ 8873 8874 /* If the controller supports either ioaccel method then 8875 * we can also use the RAID stack submit path that does not 8876 * perform the superfluous readl() after each command submission. 8877 */ 8878 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2)) 8879 access = SA5_performant_access_no_read; 8880 8881 /* Controller spec: zero out this buffer. */ 8882 for (i = 0; i < h->nreply_queues; i++) 8883 memset(h->reply_queue[i].head, 0, h->reply_queue_size); 8884 8885 bft[7] = SG_ENTRIES_IN_CMD + 4; 8886 calc_bucket_map(bft, ARRAY_SIZE(bft), 8887 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable); 8888 for (i = 0; i < 8; i++) 8889 writel(bft[i], &h->transtable->BlockFetch[i]); 8890 8891 /* size of controller ring buffer */ 8892 writel(h->max_commands, &h->transtable->RepQSize); 8893 writel(h->nreply_queues, &h->transtable->RepQCount); 8894 writel(0, &h->transtable->RepQCtrAddrLow32); 8895 writel(0, &h->transtable->RepQCtrAddrHigh32); 8896 8897 for (i = 0; i < h->nreply_queues; i++) { 8898 writel(0, &h->transtable->RepQAddr[i].upper); 8899 writel(h->reply_queue[i].busaddr, 8900 &h->transtable->RepQAddr[i].lower); 8901 } 8902 8903 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi); 8904 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest)); 8905 /* 8906 * enable outbound interrupt coalescing in accelerator mode; 8907 */ 8908 if (trans_support & CFGTBL_Trans_io_accel1) { 8909 access = SA5_ioaccel_mode1_access; 8910 writel(10, &h->cfgtable->HostWrite.CoalIntDelay); 8911 writel(4, &h->cfgtable->HostWrite.CoalIntCount); 8912 } else { 8913 if (trans_support & CFGTBL_Trans_io_accel2) { 8914 access = SA5_ioaccel_mode2_access; 8915 writel(10, &h->cfgtable->HostWrite.CoalIntDelay); 8916 writel(4, &h->cfgtable->HostWrite.CoalIntCount); 8917 } 8918 } 8919 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 8920 if (hpsa_wait_for_mode_change_ack(h)) { 8921 dev_err(&h->pdev->dev, 8922 "performant mode problem - doorbell timeout\n"); 8923 return -ENODEV; 8924 } 8925 register_value = readl(&(h->cfgtable->TransportActive)); 8926 if (!(register_value & CFGTBL_Trans_Performant)) { 8927 dev_err(&h->pdev->dev, 8928 "performant mode problem - transport not active\n"); 8929 return -ENODEV; 8930 } 8931 /* Change the access methods to the performant access methods */ 8932 h->access = access; 8933 h->transMethod = transMethod; 8934 8935 if (!((trans_support & CFGTBL_Trans_io_accel1) || 8936 (trans_support & CFGTBL_Trans_io_accel2))) 8937 return 0; 8938 8939 if (trans_support & CFGTBL_Trans_io_accel1) { 8940 /* Set up I/O accelerator mode */ 8941 for (i = 0; i < h->nreply_queues; i++) { 8942 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX); 8943 h->reply_queue[i].current_entry = 8944 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX); 8945 } 8946 bft[7] = h->ioaccel_maxsg + 8; 8947 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8, 8948 h->ioaccel1_blockFetchTable); 8949 8950 /* initialize all reply queue entries to unused */ 8951 for (i = 0; i < h->nreply_queues; i++) 8952 memset(h->reply_queue[i].head, 8953 (u8) IOACCEL_MODE1_REPLY_UNUSED, 8954 h->reply_queue_size); 8955 8956 /* set all the constant fields in the accelerator command 8957 * frames once at init time to save CPU cycles later. 8958 */ 8959 for (i = 0; i < h->nr_cmds; i++) { 8960 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i]; 8961 8962 cp->function = IOACCEL1_FUNCTION_SCSIIO; 8963 cp->err_info = (u32) (h->errinfo_pool_dhandle + 8964 (i * sizeof(struct ErrorInfo))); 8965 cp->err_info_len = sizeof(struct ErrorInfo); 8966 cp->sgl_offset = IOACCEL1_SGLOFFSET; 8967 cp->host_context_flags = 8968 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT); 8969 cp->timeout_sec = 0; 8970 cp->ReplyQueue = 0; 8971 cp->tag = 8972 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT)); 8973 cp->host_addr = 8974 cpu_to_le64(h->ioaccel_cmd_pool_dhandle + 8975 (i * sizeof(struct io_accel1_cmd))); 8976 } 8977 } else if (trans_support & CFGTBL_Trans_io_accel2) { 8978 u64 cfg_offset, cfg_base_addr_index; 8979 u32 bft2_offset, cfg_base_addr; 8980 int rc; 8981 8982 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 8983 &cfg_base_addr_index, &cfg_offset); 8984 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64); 8985 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ; 8986 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg, 8987 4, h->ioaccel2_blockFetchTable); 8988 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset); 8989 BUILD_BUG_ON(offsetof(struct CfgTable, 8990 io_accel_request_size_offset) != 0xb8); 8991 h->ioaccel2_bft2_regs = 8992 remap_pci_mem(pci_resource_start(h->pdev, 8993 cfg_base_addr_index) + 8994 cfg_offset + bft2_offset, 8995 ARRAY_SIZE(bft2) * 8996 sizeof(*h->ioaccel2_bft2_regs)); 8997 for (i = 0; i < ARRAY_SIZE(bft2); i++) 8998 writel(bft2[i], &h->ioaccel2_bft2_regs[i]); 8999 } 9000 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 9001 if (hpsa_wait_for_mode_change_ack(h)) { 9002 dev_err(&h->pdev->dev, 9003 "performant mode problem - enabling ioaccel mode\n"); 9004 return -ENODEV; 9005 } 9006 return 0; 9007} 9008 9009/* Free ioaccel1 mode command blocks and block fetch table */ 9010static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9011{ 9012 if (h->ioaccel_cmd_pool) { 9013 pci_free_consistent(h->pdev, 9014 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9015 h->ioaccel_cmd_pool, 9016 h->ioaccel_cmd_pool_dhandle); 9017 h->ioaccel_cmd_pool = NULL; 9018 h->ioaccel_cmd_pool_dhandle = 0; 9019 } 9020 kfree(h->ioaccel1_blockFetchTable); 9021 h->ioaccel1_blockFetchTable = NULL; 9022} 9023 9024/* Allocate ioaccel1 mode command blocks and block fetch table */ 9025static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h) 9026{ 9027 h->ioaccel_maxsg = 9028 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9029 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES) 9030 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES; 9031 9032 /* Command structures must be aligned on a 128-byte boundary 9033 * because the 7 lower bits of the address are used by the 9034 * hardware. 9035 */ 9036 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) % 9037 IOACCEL1_COMMANDLIST_ALIGNMENT); 9038 h->ioaccel_cmd_pool = 9039 pci_alloc_consistent(h->pdev, 9040 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), 9041 &(h->ioaccel_cmd_pool_dhandle)); 9042 9043 h->ioaccel1_blockFetchTable = 9044 kmalloc(((h->ioaccel_maxsg + 1) * 9045 sizeof(u32)), GFP_KERNEL); 9046 9047 if ((h->ioaccel_cmd_pool == NULL) || 9048 (h->ioaccel1_blockFetchTable == NULL)) 9049 goto clean_up; 9050 9051 memset(h->ioaccel_cmd_pool, 0, 9052 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool)); 9053 return 0; 9054 9055clean_up: 9056 hpsa_free_ioaccel1_cmd_and_bft(h); 9057 return -ENOMEM; 9058} 9059 9060/* Free ioaccel2 mode command blocks and block fetch table */ 9061static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9062{ 9063 hpsa_free_ioaccel2_sg_chain_blocks(h); 9064 9065 if (h->ioaccel2_cmd_pool) { 9066 pci_free_consistent(h->pdev, 9067 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9068 h->ioaccel2_cmd_pool, 9069 h->ioaccel2_cmd_pool_dhandle); 9070 h->ioaccel2_cmd_pool = NULL; 9071 h->ioaccel2_cmd_pool_dhandle = 0; 9072 } 9073 kfree(h->ioaccel2_blockFetchTable); 9074 h->ioaccel2_blockFetchTable = NULL; 9075} 9076 9077/* Allocate ioaccel2 mode command blocks and block fetch table */ 9078static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h) 9079{ 9080 int rc; 9081 9082 /* Allocate ioaccel2 mode command blocks and block fetch table */ 9083 9084 h->ioaccel_maxsg = 9085 readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); 9086 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES) 9087 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES; 9088 9089 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) % 9090 IOACCEL2_COMMANDLIST_ALIGNMENT); 9091 h->ioaccel2_cmd_pool = 9092 pci_alloc_consistent(h->pdev, 9093 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), 9094 &(h->ioaccel2_cmd_pool_dhandle)); 9095 9096 h->ioaccel2_blockFetchTable = 9097 kmalloc(((h->ioaccel_maxsg + 1) * 9098 sizeof(u32)), GFP_KERNEL); 9099 9100 if ((h->ioaccel2_cmd_pool == NULL) || 9101 (h->ioaccel2_blockFetchTable == NULL)) { 9102 rc = -ENOMEM; 9103 goto clean_up; 9104 } 9105 9106 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h); 9107 if (rc) 9108 goto clean_up; 9109 9110 memset(h->ioaccel2_cmd_pool, 0, 9111 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool)); 9112 return 0; 9113 9114clean_up: 9115 hpsa_free_ioaccel2_cmd_and_bft(h); 9116 return rc; 9117} 9118 9119/* Free items allocated by hpsa_put_ctlr_into_performant_mode */ 9120static void hpsa_free_performant_mode(struct ctlr_info *h) 9121{ 9122 kfree(h->blockFetchTable); 9123 h->blockFetchTable = NULL; 9124 hpsa_free_reply_queues(h); 9125 hpsa_free_ioaccel1_cmd_and_bft(h); 9126 hpsa_free_ioaccel2_cmd_and_bft(h); 9127} 9128 9129/* return -ENODEV on error, 0 on success (or no action) 9130 * allocates numerous items that must be freed later 9131 */ 9132static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) 9133{ 9134 u32 trans_support; 9135 unsigned long transMethod = CFGTBL_Trans_Performant | 9136 CFGTBL_Trans_use_short_tags; 9137 int i, rc; 9138 9139 if (hpsa_simple_mode) 9140 return 0; 9141 9142 trans_support = readl(&(h->cfgtable->TransportSupport)); 9143 if (!(trans_support & PERFORMANT_MODE)) 9144 return 0; 9145 9146 /* Check for I/O accelerator mode support */ 9147 if (trans_support & CFGTBL_Trans_io_accel1) { 9148 transMethod |= CFGTBL_Trans_io_accel1 | 9149 CFGTBL_Trans_enable_directed_msix; 9150 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h); 9151 if (rc) 9152 return rc; 9153 } else if (trans_support & CFGTBL_Trans_io_accel2) { 9154 transMethod |= CFGTBL_Trans_io_accel2 | 9155 CFGTBL_Trans_enable_directed_msix; 9156 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h); 9157 if (rc) 9158 return rc; 9159 } 9160 9161 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1; 9162 hpsa_get_max_perf_mode_cmds(h); 9163 /* Performant mode ring buffer and supporting data structures */ 9164 h->reply_queue_size = h->max_commands * sizeof(u64); 9165 9166 for (i = 0; i < h->nreply_queues; i++) { 9167 h->reply_queue[i].head = pci_alloc_consistent(h->pdev, 9168 h->reply_queue_size, 9169 &(h->reply_queue[i].busaddr)); 9170 if (!h->reply_queue[i].head) { 9171 rc = -ENOMEM; 9172 goto clean1; /* rq, ioaccel */ 9173 } 9174 h->reply_queue[i].size = h->max_commands; 9175 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */ 9176 h->reply_queue[i].current_entry = 0; 9177 } 9178 9179 /* Need a block fetch table for performant mode */ 9180 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) * 9181 sizeof(u32)), GFP_KERNEL); 9182 if (!h->blockFetchTable) { 9183 rc = -ENOMEM; 9184 goto clean1; /* rq, ioaccel */ 9185 } 9186 9187 rc = hpsa_enter_performant_mode(h, trans_support); 9188 if (rc) 9189 goto clean2; /* bft, rq, ioaccel */ 9190 return 0; 9191 9192clean2: /* bft, rq, ioaccel */ 9193 kfree(h->blockFetchTable); 9194 h->blockFetchTable = NULL; 9195clean1: /* rq, ioaccel */ 9196 hpsa_free_reply_queues(h); 9197 hpsa_free_ioaccel1_cmd_and_bft(h); 9198 hpsa_free_ioaccel2_cmd_and_bft(h); 9199 return rc; 9200} 9201 9202static int is_accelerated_cmd(struct CommandList *c) 9203{ 9204 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2; 9205} 9206 9207static void hpsa_drain_accel_commands(struct ctlr_info *h) 9208{ 9209 struct CommandList *c = NULL; 9210 int i, accel_cmds_out; 9211 int refcount; 9212 9213 do { /* wait for all outstanding ioaccel commands to drain out */ 9214 accel_cmds_out = 0; 9215 for (i = 0; i < h->nr_cmds; i++) { 9216 c = h->cmd_pool + i; 9217 refcount = atomic_inc_return(&c->refcount); 9218 if (refcount > 1) /* Command is allocated */ 9219 accel_cmds_out += is_accelerated_cmd(c); 9220 cmd_free(h, c); 9221 } 9222 if (accel_cmds_out <= 0) 9223 break; 9224 msleep(100); 9225 } while (1); 9226} 9227 9228static struct hpsa_sas_phy *hpsa_alloc_sas_phy( 9229 struct hpsa_sas_port *hpsa_sas_port) 9230{ 9231 struct hpsa_sas_phy *hpsa_sas_phy; 9232 struct sas_phy *phy; 9233 9234 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL); 9235 if (!hpsa_sas_phy) 9236 return NULL; 9237 9238 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev, 9239 hpsa_sas_port->next_phy_index); 9240 if (!phy) { 9241 kfree(hpsa_sas_phy); 9242 return NULL; 9243 } 9244 9245 hpsa_sas_port->next_phy_index++; 9246 hpsa_sas_phy->phy = phy; 9247 hpsa_sas_phy->parent_port = hpsa_sas_port; 9248 9249 return hpsa_sas_phy; 9250} 9251 9252static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9253{ 9254 struct sas_phy *phy = hpsa_sas_phy->phy; 9255 9256 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy); 9257 sas_phy_free(phy); 9258 if (hpsa_sas_phy->added_to_port) 9259 list_del(&hpsa_sas_phy->phy_list_entry); 9260 kfree(hpsa_sas_phy); 9261} 9262 9263static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy) 9264{ 9265 int rc; 9266 struct hpsa_sas_port *hpsa_sas_port; 9267 struct sas_phy *phy; 9268 struct sas_identify *identify; 9269 9270 hpsa_sas_port = hpsa_sas_phy->parent_port; 9271 phy = hpsa_sas_phy->phy; 9272 9273 identify = &phy->identify; 9274 memset(identify, 0, sizeof(*identify)); 9275 identify->sas_address = hpsa_sas_port->sas_address; 9276 identify->device_type = SAS_END_DEVICE; 9277 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9278 identify->target_port_protocols = SAS_PROTOCOL_STP; 9279 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9280 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; 9281 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; 9282 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; 9283 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 9284 9285 rc = sas_phy_add(hpsa_sas_phy->phy); 9286 if (rc) 9287 return rc; 9288 9289 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy); 9290 list_add_tail(&hpsa_sas_phy->phy_list_entry, 9291 &hpsa_sas_port->phy_list_head); 9292 hpsa_sas_phy->added_to_port = true; 9293 9294 return 0; 9295} 9296 9297static int 9298 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port, 9299 struct sas_rphy *rphy) 9300{ 9301 struct sas_identify *identify; 9302 9303 identify = &rphy->identify; 9304 identify->sas_address = hpsa_sas_port->sas_address; 9305 identify->initiator_port_protocols = SAS_PROTOCOL_STP; 9306 identify->target_port_protocols = SAS_PROTOCOL_STP; 9307 9308 return sas_rphy_add(rphy); 9309} 9310 9311static struct hpsa_sas_port 9312 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node, 9313 u64 sas_address) 9314{ 9315 int rc; 9316 struct hpsa_sas_port *hpsa_sas_port; 9317 struct sas_port *port; 9318 9319 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL); 9320 if (!hpsa_sas_port) 9321 return NULL; 9322 9323 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head); 9324 hpsa_sas_port->parent_node = hpsa_sas_node; 9325 9326 port = sas_port_alloc_num(hpsa_sas_node->parent_dev); 9327 if (!port) 9328 goto free_hpsa_port; 9329 9330 rc = sas_port_add(port); 9331 if (rc) 9332 goto free_sas_port; 9333 9334 hpsa_sas_port->port = port; 9335 hpsa_sas_port->sas_address = sas_address; 9336 list_add_tail(&hpsa_sas_port->port_list_entry, 9337 &hpsa_sas_node->port_list_head); 9338 9339 return hpsa_sas_port; 9340 9341free_sas_port: 9342 sas_port_free(port); 9343free_hpsa_port: 9344 kfree(hpsa_sas_port); 9345 9346 return NULL; 9347} 9348 9349static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port) 9350{ 9351 struct hpsa_sas_phy *hpsa_sas_phy; 9352 struct hpsa_sas_phy *next; 9353 9354 list_for_each_entry_safe(hpsa_sas_phy, next, 9355 &hpsa_sas_port->phy_list_head, phy_list_entry) 9356 hpsa_free_sas_phy(hpsa_sas_phy); 9357 9358 sas_port_delete(hpsa_sas_port->port); 9359 list_del(&hpsa_sas_port->port_list_entry); 9360 kfree(hpsa_sas_port); 9361} 9362 9363static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev) 9364{ 9365 struct hpsa_sas_node *hpsa_sas_node; 9366 9367 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL); 9368 if (hpsa_sas_node) { 9369 hpsa_sas_node->parent_dev = parent_dev; 9370 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head); 9371 } 9372 9373 return hpsa_sas_node; 9374} 9375 9376static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node) 9377{ 9378 struct hpsa_sas_port *hpsa_sas_port; 9379 struct hpsa_sas_port *next; 9380 9381 if (!hpsa_sas_node) 9382 return; 9383 9384 list_for_each_entry_safe(hpsa_sas_port, next, 9385 &hpsa_sas_node->port_list_head, port_list_entry) 9386 hpsa_free_sas_port(hpsa_sas_port); 9387 9388 kfree(hpsa_sas_node); 9389} 9390 9391static struct hpsa_scsi_dev_t 9392 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, 9393 struct sas_rphy *rphy) 9394{ 9395 int i; 9396 struct hpsa_scsi_dev_t *device; 9397 9398 for (i = 0; i < h->ndevices; i++) { 9399 device = h->dev[i]; 9400 if (!device->sas_port) 9401 continue; 9402 if (device->sas_port->rphy == rphy) 9403 return device; 9404 } 9405 9406 return NULL; 9407} 9408 9409static int hpsa_add_sas_host(struct ctlr_info *h) 9410{ 9411 int rc; 9412 struct device *parent_dev; 9413 struct hpsa_sas_node *hpsa_sas_node; 9414 struct hpsa_sas_port *hpsa_sas_port; 9415 struct hpsa_sas_phy *hpsa_sas_phy; 9416 9417 parent_dev = &h->scsi_host->shost_gendev; 9418 9419 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev); 9420 if (!hpsa_sas_node) 9421 return -ENOMEM; 9422 9423 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address); 9424 if (!hpsa_sas_port) { 9425 rc = -ENODEV; 9426 goto free_sas_node; 9427 } 9428 9429 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port); 9430 if (!hpsa_sas_phy) { 9431 rc = -ENODEV; 9432 goto free_sas_port; 9433 } 9434 9435 rc = hpsa_sas_port_add_phy(hpsa_sas_phy); 9436 if (rc) 9437 goto free_sas_phy; 9438 9439 h->sas_host = hpsa_sas_node; 9440 9441 return 0; 9442 9443free_sas_phy: 9444 hpsa_free_sas_phy(hpsa_sas_phy); 9445free_sas_port: 9446 hpsa_free_sas_port(hpsa_sas_port); 9447free_sas_node: 9448 hpsa_free_sas_node(hpsa_sas_node); 9449 9450 return rc; 9451} 9452 9453static void hpsa_delete_sas_host(struct ctlr_info *h) 9454{ 9455 hpsa_free_sas_node(h->sas_host); 9456} 9457 9458static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, 9459 struct hpsa_scsi_dev_t *device) 9460{ 9461 int rc; 9462 struct hpsa_sas_port *hpsa_sas_port; 9463 struct sas_rphy *rphy; 9464 9465 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address); 9466 if (!hpsa_sas_port) 9467 return -ENOMEM; 9468 9469 rphy = sas_end_device_alloc(hpsa_sas_port->port); 9470 if (!rphy) { 9471 rc = -ENODEV; 9472 goto free_sas_port; 9473 } 9474 9475 hpsa_sas_port->rphy = rphy; 9476 device->sas_port = hpsa_sas_port; 9477 9478 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy); 9479 if (rc) 9480 goto free_sas_port; 9481 9482 return 0; 9483 9484free_sas_port: 9485 hpsa_free_sas_port(hpsa_sas_port); 9486 device->sas_port = NULL; 9487 9488 return rc; 9489} 9490 9491static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device) 9492{ 9493 if (device->sas_port) { 9494 hpsa_free_sas_port(device->sas_port); 9495 device->sas_port = NULL; 9496 } 9497} 9498 9499static int 9500hpsa_sas_get_linkerrors(struct sas_phy *phy) 9501{ 9502 return 0; 9503} 9504 9505static int 9506hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) 9507{ 9508 return 0; 9509} 9510 9511static int 9512hpsa_sas_get_bay_identifier(struct sas_rphy *rphy) 9513{ 9514 return -ENXIO; 9515} 9516 9517static int 9518hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset) 9519{ 9520 return 0; 9521} 9522 9523static int 9524hpsa_sas_phy_enable(struct sas_phy *phy, int enable) 9525{ 9526 return 0; 9527} 9528 9529static int 9530hpsa_sas_phy_setup(struct sas_phy *phy) 9531{ 9532 return 0; 9533} 9534 9535static void 9536hpsa_sas_phy_release(struct sas_phy *phy) 9537{ 9538} 9539 9540static int 9541hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) 9542{ 9543 return -EINVAL; 9544} 9545 9546/* SMP = Serial Management Protocol */ 9547static int 9548hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 9549struct request *req) 9550{ 9551 return -EINVAL; 9552} 9553 9554static struct sas_function_template hpsa_sas_transport_functions = { 9555 .get_linkerrors = hpsa_sas_get_linkerrors, 9556 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier, 9557 .get_bay_identifier = hpsa_sas_get_bay_identifier, 9558 .phy_reset = hpsa_sas_phy_reset, 9559 .phy_enable = hpsa_sas_phy_enable, 9560 .phy_setup = hpsa_sas_phy_setup, 9561 .phy_release = hpsa_sas_phy_release, 9562 .set_phy_speed = hpsa_sas_phy_speed, 9563 .smp_handler = hpsa_sas_smp_handler, 9564}; 9565 9566/* 9567 * This is it. Register the PCI driver information for the cards we control 9568 * the OS will call our registered routines when it finds one of our cards. 9569 */ 9570static int __init hpsa_init(void) 9571{ 9572 int rc; 9573 9574 hpsa_sas_transport_template = 9575 sas_attach_transport(&hpsa_sas_transport_functions); 9576 if (!hpsa_sas_transport_template) 9577 return -ENODEV; 9578 9579 rc = pci_register_driver(&hpsa_pci_driver); 9580 9581 if (rc) 9582 sas_release_transport(hpsa_sas_transport_template); 9583 9584 return rc; 9585} 9586 9587static void __exit hpsa_cleanup(void) 9588{ 9589 pci_unregister_driver(&hpsa_pci_driver); 9590 sas_release_transport(hpsa_sas_transport_template); 9591} 9592 9593static void __attribute__((unused)) verify_offsets(void) 9594{ 9595#define VERIFY_OFFSET(member, offset) \ 9596 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset) 9597 9598 VERIFY_OFFSET(structure_size, 0); 9599 VERIFY_OFFSET(volume_blk_size, 4); 9600 VERIFY_OFFSET(volume_blk_cnt, 8); 9601 VERIFY_OFFSET(phys_blk_shift, 16); 9602 VERIFY_OFFSET(parity_rotation_shift, 17); 9603 VERIFY_OFFSET(strip_size, 18); 9604 VERIFY_OFFSET(disk_starting_blk, 20); 9605 VERIFY_OFFSET(disk_blk_cnt, 28); 9606 VERIFY_OFFSET(data_disks_per_row, 36); 9607 VERIFY_OFFSET(metadata_disks_per_row, 38); 9608 VERIFY_OFFSET(row_cnt, 40); 9609 VERIFY_OFFSET(layout_map_count, 42); 9610 VERIFY_OFFSET(flags, 44); 9611 VERIFY_OFFSET(dekindex, 46); 9612 /* VERIFY_OFFSET(reserved, 48 */ 9613 VERIFY_OFFSET(data, 64); 9614 9615#undef VERIFY_OFFSET 9616 9617#define VERIFY_OFFSET(member, offset) \ 9618 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset) 9619 9620 VERIFY_OFFSET(IU_type, 0); 9621 VERIFY_OFFSET(direction, 1); 9622 VERIFY_OFFSET(reply_queue, 2); 9623 /* VERIFY_OFFSET(reserved1, 3); */ 9624 VERIFY_OFFSET(scsi_nexus, 4); 9625 VERIFY_OFFSET(Tag, 8); 9626 VERIFY_OFFSET(cdb, 16); 9627 VERIFY_OFFSET(cciss_lun, 32); 9628 VERIFY_OFFSET(data_len, 40); 9629 VERIFY_OFFSET(cmd_priority_task_attr, 44); 9630 VERIFY_OFFSET(sg_count, 45); 9631 /* VERIFY_OFFSET(reserved3 */ 9632 VERIFY_OFFSET(err_ptr, 48); 9633 VERIFY_OFFSET(err_len, 56); 9634 /* VERIFY_OFFSET(reserved4 */ 9635 VERIFY_OFFSET(sg, 64); 9636 9637#undef VERIFY_OFFSET 9638 9639#define VERIFY_OFFSET(member, offset) \ 9640 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset) 9641 9642 VERIFY_OFFSET(dev_handle, 0x00); 9643 VERIFY_OFFSET(reserved1, 0x02); 9644 VERIFY_OFFSET(function, 0x03); 9645 VERIFY_OFFSET(reserved2, 0x04); 9646 VERIFY_OFFSET(err_info, 0x0C); 9647 VERIFY_OFFSET(reserved3, 0x10); 9648 VERIFY_OFFSET(err_info_len, 0x12); 9649 VERIFY_OFFSET(reserved4, 0x13); 9650 VERIFY_OFFSET(sgl_offset, 0x14); 9651 VERIFY_OFFSET(reserved5, 0x15); 9652 VERIFY_OFFSET(transfer_len, 0x1C); 9653 VERIFY_OFFSET(reserved6, 0x20); 9654 VERIFY_OFFSET(io_flags, 0x24); 9655 VERIFY_OFFSET(reserved7, 0x26); 9656 VERIFY_OFFSET(LUN, 0x34); 9657 VERIFY_OFFSET(control, 0x3C); 9658 VERIFY_OFFSET(CDB, 0x40); 9659 VERIFY_OFFSET(reserved8, 0x50); 9660 VERIFY_OFFSET(host_context_flags, 0x60); 9661 VERIFY_OFFSET(timeout_sec, 0x62); 9662 VERIFY_OFFSET(ReplyQueue, 0x64); 9663 VERIFY_OFFSET(reserved9, 0x65); 9664 VERIFY_OFFSET(tag, 0x68); 9665 VERIFY_OFFSET(host_addr, 0x70); 9666 VERIFY_OFFSET(CISS_LUN, 0x78); 9667 VERIFY_OFFSET(SG, 0x78 + 8); 9668#undef VERIFY_OFFSET 9669} 9670 9671module_init(hpsa_init); 9672module_exit(hpsa_cleanup); 9673