1/* 2 * sata_qstor.c - Pacific Digital Corporation QStor SATA 3 * 4 * Maintained by: Mark Lord <mlord@pobox.com> 5 * 6 * Copyright 2005 Pacific Digital Corporation. 7 * (OSL/GPL code release authorized by Jalil Fadavi). 8 * 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; see the file COPYING. If not, write to 22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 * 25 * libata documentation is available via 'make {ps|pdf}docs', 26 * as Documentation/DocBook/libata.* 27 * 28 */ 29 30#include <linux/kernel.h> 31#include <linux/module.h> 32#include <linux/gfp.h> 33#include <linux/pci.h> 34#include <linux/blkdev.h> 35#include <linux/delay.h> 36#include <linux/interrupt.h> 37#include <linux/device.h> 38#include <scsi/scsi_host.h> 39#include <linux/libata.h> 40 41#define DRV_NAME "sata_qstor" 42#define DRV_VERSION "0.09" 43 44enum { 45 QS_MMIO_BAR = 4, 46 47 QS_PORTS = 4, 48 QS_MAX_PRD = LIBATA_MAX_PRD, 49 QS_CPB_ORDER = 6, 50 QS_CPB_BYTES = (1 << QS_CPB_ORDER), 51 QS_PRD_BYTES = QS_MAX_PRD * 16, 52 QS_PKT_BYTES = QS_CPB_BYTES + QS_PRD_BYTES, 53 54 /* global register offsets */ 55 QS_HCF_CNFG3 = 0x0003, /* host configuration offset */ 56 QS_HID_HPHY = 0x0004, /* host physical interface info */ 57 QS_HCT_CTRL = 0x00e4, /* global interrupt mask offset */ 58 QS_HST_SFF = 0x0100, /* host status fifo offset */ 59 QS_HVS_SERD3 = 0x0393, /* PHY enable offset */ 60 61 /* global control bits */ 62 QS_HPHY_64BIT = (1 << 1), /* 64-bit bus detected */ 63 QS_CNFG3_GSRST = 0x01, /* global chip reset */ 64 QS_SERD3_PHY_ENA = 0xf0, /* PHY detection ENAble*/ 65 66 /* per-channel register offsets */ 67 QS_CCF_CPBA = 0x0710, /* chan CPB base address */ 68 QS_CCF_CSEP = 0x0718, /* chan CPB separation factor */ 69 QS_CFC_HUFT = 0x0800, /* host upstream fifo threshold */ 70 QS_CFC_HDFT = 0x0804, /* host downstream fifo threshold */ 71 QS_CFC_DUFT = 0x0808, /* dev upstream fifo threshold */ 72 QS_CFC_DDFT = 0x080c, /* dev downstream fifo threshold */ 73 QS_CCT_CTR0 = 0x0900, /* chan control-0 offset */ 74 QS_CCT_CTR1 = 0x0901, /* chan control-1 offset */ 75 QS_CCT_CFF = 0x0a00, /* chan command fifo offset */ 76 77 /* channel control bits */ 78 QS_CTR0_REG = (1 << 1), /* register mode (vs. pkt mode) */ 79 QS_CTR0_CLER = (1 << 2), /* clear channel errors */ 80 QS_CTR1_RDEV = (1 << 1), /* sata phy/comms reset */ 81 QS_CTR1_RCHN = (1 << 4), /* reset channel logic */ 82 QS_CCF_RUN_PKT = 0x107, /* RUN a new dma PKT */ 83 84 /* pkt sub-field headers */ 85 QS_HCB_HDR = 0x01, /* Host Control Block header */ 86 QS_DCB_HDR = 0x02, /* Device Control Block header */ 87 88 /* pkt HCB flag bits */ 89 QS_HF_DIRO = (1 << 0), /* data DIRection Out */ 90 QS_HF_DAT = (1 << 3), /* DATa pkt */ 91 QS_HF_IEN = (1 << 4), /* Interrupt ENable */ 92 QS_HF_VLD = (1 << 5), /* VaLiD pkt */ 93 94 /* pkt DCB flag bits */ 95 QS_DF_PORD = (1 << 2), /* Pio OR Dma */ 96 QS_DF_ELBA = (1 << 3), /* Extended LBA (lba48) */ 97 98 /* PCI device IDs */ 99 board_2068_idx = 0, /* QStor 4-port SATA/RAID */ 100}; 101 102enum { 103 QS_DMA_BOUNDARY = ~0UL 104}; 105 106typedef enum { qs_state_mmio, qs_state_pkt } qs_state_t; 107 108struct qs_port_priv { 109 u8 *pkt; 110 dma_addr_t pkt_dma; 111 qs_state_t state; 112}; 113 114static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val); 115static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val); 116static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); 117static int qs_port_start(struct ata_port *ap); 118static void qs_host_stop(struct ata_host *host); 119static void qs_qc_prep(struct ata_queued_cmd *qc); 120static unsigned int qs_qc_issue(struct ata_queued_cmd *qc); 121static int qs_check_atapi_dma(struct ata_queued_cmd *qc); 122static void qs_freeze(struct ata_port *ap); 123static void qs_thaw(struct ata_port *ap); 124static int qs_prereset(struct ata_link *link, unsigned long deadline); 125static void qs_error_handler(struct ata_port *ap); 126 127static struct scsi_host_template qs_ata_sht = { 128 ATA_BASE_SHT(DRV_NAME), 129 .sg_tablesize = QS_MAX_PRD, 130 .dma_boundary = QS_DMA_BOUNDARY, 131}; 132 133static struct ata_port_operations qs_ata_ops = { 134 .inherits = &ata_sff_port_ops, 135 136 .check_atapi_dma = qs_check_atapi_dma, 137 .qc_prep = qs_qc_prep, 138 .qc_issue = qs_qc_issue, 139 140 .freeze = qs_freeze, 141 .thaw = qs_thaw, 142 .prereset = qs_prereset, 143 .softreset = ATA_OP_NULL, 144 .error_handler = qs_error_handler, 145 .lost_interrupt = ATA_OP_NULL, 146 147 .scr_read = qs_scr_read, 148 .scr_write = qs_scr_write, 149 150 .port_start = qs_port_start, 151 .host_stop = qs_host_stop, 152}; 153 154static const struct ata_port_info qs_port_info[] = { 155 /* board_2068_idx */ 156 { 157 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_POLLING, 158 .pio_mask = ATA_PIO4_ONLY, 159 .udma_mask = ATA_UDMA6, 160 .port_ops = &qs_ata_ops, 161 }, 162}; 163 164static const struct pci_device_id qs_ata_pci_tbl[] = { 165 { PCI_VDEVICE(PDC, 0x2068), board_2068_idx }, 166 167 { } /* terminate list */ 168}; 169 170static struct pci_driver qs_ata_pci_driver = { 171 .name = DRV_NAME, 172 .id_table = qs_ata_pci_tbl, 173 .probe = qs_ata_init_one, 174 .remove = ata_pci_remove_one, 175}; 176 177static void __iomem *qs_mmio_base(struct ata_host *host) 178{ 179 return host->iomap[QS_MMIO_BAR]; 180} 181 182static int qs_check_atapi_dma(struct ata_queued_cmd *qc) 183{ 184 return 1; /* ATAPI DMA not supported */ 185} 186 187static inline void qs_enter_reg_mode(struct ata_port *ap) 188{ 189 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 190 struct qs_port_priv *pp = ap->private_data; 191 192 pp->state = qs_state_mmio; 193 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0); 194 readb(chan + QS_CCT_CTR0); /* flush */ 195} 196 197static inline void qs_reset_channel_logic(struct ata_port *ap) 198{ 199 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 200 201 writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1); 202 readb(chan + QS_CCT_CTR0); /* flush */ 203 qs_enter_reg_mode(ap); 204} 205 206static void qs_freeze(struct ata_port *ap) 207{ 208 u8 __iomem *mmio_base = qs_mmio_base(ap->host); 209 210 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 211 qs_enter_reg_mode(ap); 212} 213 214static void qs_thaw(struct ata_port *ap) 215{ 216 u8 __iomem *mmio_base = qs_mmio_base(ap->host); 217 218 qs_enter_reg_mode(ap); 219 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */ 220} 221 222static int qs_prereset(struct ata_link *link, unsigned long deadline) 223{ 224 struct ata_port *ap = link->ap; 225 226 qs_reset_channel_logic(ap); 227 return ata_sff_prereset(link, deadline); 228} 229 230static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) 231{ 232 if (sc_reg > SCR_CONTROL) 233 return -EINVAL; 234 *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 8)); 235 return 0; 236} 237 238static void qs_error_handler(struct ata_port *ap) 239{ 240 qs_enter_reg_mode(ap); 241 ata_sff_error_handler(ap); 242} 243 244static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) 245{ 246 if (sc_reg > SCR_CONTROL) 247 return -EINVAL; 248 writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 8)); 249 return 0; 250} 251 252static unsigned int qs_fill_sg(struct ata_queued_cmd *qc) 253{ 254 struct scatterlist *sg; 255 struct ata_port *ap = qc->ap; 256 struct qs_port_priv *pp = ap->private_data; 257 u8 *prd = pp->pkt + QS_CPB_BYTES; 258 unsigned int si; 259 260 for_each_sg(qc->sg, sg, qc->n_elem, si) { 261 u64 addr; 262 u32 len; 263 264 addr = sg_dma_address(sg); 265 *(__le64 *)prd = cpu_to_le64(addr); 266 prd += sizeof(u64); 267 268 len = sg_dma_len(sg); 269 *(__le32 *)prd = cpu_to_le32(len); 270 prd += sizeof(u64); 271 272 VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", si, 273 (unsigned long long)addr, len); 274 } 275 276 return si; 277} 278 279static void qs_qc_prep(struct ata_queued_cmd *qc) 280{ 281 struct qs_port_priv *pp = qc->ap->private_data; 282 u8 dflags = QS_DF_PORD, *buf = pp->pkt; 283 u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD; 284 u64 addr; 285 unsigned int nelem; 286 287 VPRINTK("ENTER\n"); 288 289 qs_enter_reg_mode(qc->ap); 290 if (qc->tf.protocol != ATA_PROT_DMA) 291 return; 292 293 nelem = qs_fill_sg(qc); 294 295 if ((qc->tf.flags & ATA_TFLAG_WRITE)) 296 hflags |= QS_HF_DIRO; 297 if ((qc->tf.flags & ATA_TFLAG_LBA48)) 298 dflags |= QS_DF_ELBA; 299 300 /* host control block (HCB) */ 301 buf[ 0] = QS_HCB_HDR; 302 buf[ 1] = hflags; 303 *(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nbytes); 304 *(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem); 305 addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES; 306 *(__le64 *)(&buf[16]) = cpu_to_le64(addr); 307 308 /* device control block (DCB) */ 309 buf[24] = QS_DCB_HDR; 310 buf[28] = dflags; 311 312 /* frame information structure (FIS) */ 313 ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]); 314} 315 316static inline void qs_packet_start(struct ata_queued_cmd *qc) 317{ 318 struct ata_port *ap = qc->ap; 319 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); 320 321 VPRINTK("ENTER, ap %p\n", ap); 322 323 writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0); 324 wmb(); /* flush PRDs and pkt to memory */ 325 writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF); 326 readl(chan + QS_CCT_CFF); /* flush */ 327} 328 329static unsigned int qs_qc_issue(struct ata_queued_cmd *qc) 330{ 331 struct qs_port_priv *pp = qc->ap->private_data; 332 333 switch (qc->tf.protocol) { 334 case ATA_PROT_DMA: 335 pp->state = qs_state_pkt; 336 qs_packet_start(qc); 337 return 0; 338 339 case ATAPI_PROT_DMA: 340 BUG(); 341 break; 342 343 default: 344 break; 345 } 346 347 pp->state = qs_state_mmio; 348 return ata_sff_qc_issue(qc); 349} 350 351static void qs_do_or_die(struct ata_queued_cmd *qc, u8 status) 352{ 353 qc->err_mask |= ac_err_mask(status); 354 355 if (!qc->err_mask) { 356 ata_qc_complete(qc); 357 } else { 358 struct ata_port *ap = qc->ap; 359 struct ata_eh_info *ehi = &ap->link.eh_info; 360 361 ata_ehi_clear_desc(ehi); 362 ata_ehi_push_desc(ehi, "status 0x%02X", status); 363 364 if (qc->err_mask == AC_ERR_DEV) 365 ata_port_abort(ap); 366 else 367 ata_port_freeze(ap); 368 } 369} 370 371static inline unsigned int qs_intr_pkt(struct ata_host *host) 372{ 373 unsigned int handled = 0; 374 u8 sFFE; 375 u8 __iomem *mmio_base = qs_mmio_base(host); 376 377 do { 378 u32 sff0 = readl(mmio_base + QS_HST_SFF); 379 u32 sff1 = readl(mmio_base + QS_HST_SFF + 4); 380 u8 sEVLD = (sff1 >> 30) & 0x01; /* valid flag */ 381 sFFE = sff1 >> 31; /* empty flag */ 382 383 if (sEVLD) { 384 u8 sDST = sff0 >> 16; /* dev status */ 385 u8 sHST = sff1 & 0x3f; /* host status */ 386 unsigned int port_no = (sff1 >> 8) & 0x03; 387 struct ata_port *ap = host->ports[port_no]; 388 struct qs_port_priv *pp = ap->private_data; 389 struct ata_queued_cmd *qc; 390 391 DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n", 392 sff1, sff0, port_no, sHST, sDST); 393 handled = 1; 394 if (!pp || pp->state != qs_state_pkt) 395 continue; 396 qc = ata_qc_from_tag(ap, ap->link.active_tag); 397 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 398 switch (sHST) { 399 case 0: /* successful CPB */ 400 case 3: /* device error */ 401 qs_enter_reg_mode(qc->ap); 402 qs_do_or_die(qc, sDST); 403 break; 404 default: 405 break; 406 } 407 } 408 } 409 } while (!sFFE); 410 return handled; 411} 412 413static inline unsigned int qs_intr_mmio(struct ata_host *host) 414{ 415 unsigned int handled = 0, port_no; 416 417 for (port_no = 0; port_no < host->n_ports; ++port_no) { 418 struct ata_port *ap = host->ports[port_no]; 419 struct qs_port_priv *pp = ap->private_data; 420 struct ata_queued_cmd *qc; 421 422 qc = ata_qc_from_tag(ap, ap->link.active_tag); 423 if (!qc) { 424 /* 425 * The qstor hardware generates spurious 426 * interrupts from time to time when switching 427 * in and out of packet mode. There's no 428 * obvious way to know if we're here now due 429 * to that, so just ack the irq and pretend we 430 * knew it was ours.. (ugh). This does not 431 * affect packet mode. 432 */ 433 ata_sff_check_status(ap); 434 handled = 1; 435 continue; 436 } 437 438 if (!pp || pp->state != qs_state_mmio) 439 continue; 440 if (!(qc->tf.flags & ATA_TFLAG_POLLING)) 441 handled |= ata_sff_port_intr(ap, qc); 442 } 443 return handled; 444} 445 446static irqreturn_t qs_intr(int irq, void *dev_instance) 447{ 448 struct ata_host *host = dev_instance; 449 unsigned int handled = 0; 450 unsigned long flags; 451 452 VPRINTK("ENTER\n"); 453 454 spin_lock_irqsave(&host->lock, flags); 455 handled = qs_intr_pkt(host) | qs_intr_mmio(host); 456 spin_unlock_irqrestore(&host->lock, flags); 457 458 VPRINTK("EXIT\n"); 459 460 return IRQ_RETVAL(handled); 461} 462 463static void qs_ata_setup_port(struct ata_ioports *port, void __iomem *base) 464{ 465 port->cmd_addr = 466 port->data_addr = base + 0x400; 467 port->error_addr = 468 port->feature_addr = base + 0x408; /* hob_feature = 0x409 */ 469 port->nsect_addr = base + 0x410; /* hob_nsect = 0x411 */ 470 port->lbal_addr = base + 0x418; /* hob_lbal = 0x419 */ 471 port->lbam_addr = base + 0x420; /* hob_lbam = 0x421 */ 472 port->lbah_addr = base + 0x428; /* hob_lbah = 0x429 */ 473 port->device_addr = base + 0x430; 474 port->status_addr = 475 port->command_addr = base + 0x438; 476 port->altstatus_addr = 477 port->ctl_addr = base + 0x440; 478 port->scr_addr = base + 0xc00; 479} 480 481static int qs_port_start(struct ata_port *ap) 482{ 483 struct device *dev = ap->host->dev; 484 struct qs_port_priv *pp; 485 void __iomem *mmio_base = qs_mmio_base(ap->host); 486 void __iomem *chan = mmio_base + (ap->port_no * 0x4000); 487 u64 addr; 488 489 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); 490 if (!pp) 491 return -ENOMEM; 492 pp->pkt = dmam_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma, 493 GFP_KERNEL); 494 if (!pp->pkt) 495 return -ENOMEM; 496 memset(pp->pkt, 0, QS_PKT_BYTES); 497 ap->private_data = pp; 498 499 qs_enter_reg_mode(ap); 500 addr = (u64)pp->pkt_dma; 501 writel((u32) addr, chan + QS_CCF_CPBA); 502 writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4); 503 return 0; 504} 505 506static void qs_host_stop(struct ata_host *host) 507{ 508 void __iomem *mmio_base = qs_mmio_base(host); 509 510 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 511 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */ 512} 513 514static void qs_host_init(struct ata_host *host, unsigned int chip_id) 515{ 516 void __iomem *mmio_base = host->iomap[QS_MMIO_BAR]; 517 unsigned int port_no; 518 519 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 520 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */ 521 522 /* reset each channel in turn */ 523 for (port_no = 0; port_no < host->n_ports; ++port_no) { 524 u8 __iomem *chan = mmio_base + (port_no * 0x4000); 525 writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1); 526 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0); 527 readb(chan + QS_CCT_CTR0); /* flush */ 528 } 529 writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */ 530 531 for (port_no = 0; port_no < host->n_ports; ++port_no) { 532 u8 __iomem *chan = mmio_base + (port_no * 0x4000); 533 /* set FIFO depths to same settings as Windows driver */ 534 writew(32, chan + QS_CFC_HUFT); 535 writew(32, chan + QS_CFC_HDFT); 536 writew(10, chan + QS_CFC_DUFT); 537 writew( 8, chan + QS_CFC_DDFT); 538 /* set CPB size in bytes, as a power of two */ 539 writeb(QS_CPB_ORDER, chan + QS_CCF_CSEP); 540 } 541 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */ 542} 543 544/* 545 * The QStor understands 64-bit buses, and uses 64-bit fields 546 * for DMA pointers regardless of bus width. We just have to 547 * make sure our DMA masks are set appropriately for whatever 548 * bridge lies between us and the QStor, and then the DMA mapping 549 * code will ensure we only ever "see" appropriate buffer addresses. 550 * If we're 32-bit limited somewhere, then our 64-bit fields will 551 * just end up with zeros in the upper 32-bits, without any special 552 * logic required outside of this routine (below). 553 */ 554static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base) 555{ 556 u32 bus_info = readl(mmio_base + QS_HID_HPHY); 557 int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT); 558 559 if (have_64bit_bus && 560 !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { 561 rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); 562 if (rc) { 563 rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 564 if (rc) { 565 dev_err(&pdev->dev, 566 "64-bit DMA enable failed\n"); 567 return rc; 568 } 569 } 570 } else { 571 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 572 if (rc) { 573 dev_err(&pdev->dev, "32-bit DMA enable failed\n"); 574 return rc; 575 } 576 rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 577 if (rc) { 578 dev_err(&pdev->dev, 579 "32-bit consistent DMA enable failed\n"); 580 return rc; 581 } 582 } 583 return 0; 584} 585 586static int qs_ata_init_one(struct pci_dev *pdev, 587 const struct pci_device_id *ent) 588{ 589 unsigned int board_idx = (unsigned int) ent->driver_data; 590 const struct ata_port_info *ppi[] = { &qs_port_info[board_idx], NULL }; 591 struct ata_host *host; 592 int rc, port_no; 593 594 ata_print_version_once(&pdev->dev, DRV_VERSION); 595 596 /* alloc host */ 597 host = ata_host_alloc_pinfo(&pdev->dev, ppi, QS_PORTS); 598 if (!host) 599 return -ENOMEM; 600 601 /* acquire resources and fill host */ 602 rc = pcim_enable_device(pdev); 603 if (rc) 604 return rc; 605 606 if ((pci_resource_flags(pdev, QS_MMIO_BAR) & IORESOURCE_MEM) == 0) 607 return -ENODEV; 608 609 rc = pcim_iomap_regions(pdev, 1 << QS_MMIO_BAR, DRV_NAME); 610 if (rc) 611 return rc; 612 host->iomap = pcim_iomap_table(pdev); 613 614 rc = qs_set_dma_masks(pdev, host->iomap[QS_MMIO_BAR]); 615 if (rc) 616 return rc; 617 618 for (port_no = 0; port_no < host->n_ports; ++port_no) { 619 struct ata_port *ap = host->ports[port_no]; 620 unsigned int offset = port_no * 0x4000; 621 void __iomem *chan = host->iomap[QS_MMIO_BAR] + offset; 622 623 qs_ata_setup_port(&ap->ioaddr, chan); 624 625 ata_port_pbar_desc(ap, QS_MMIO_BAR, -1, "mmio"); 626 ata_port_pbar_desc(ap, QS_MMIO_BAR, offset, "port"); 627 } 628 629 /* initialize adapter */ 630 qs_host_init(host, board_idx); 631 632 pci_set_master(pdev); 633 return ata_host_activate(host, pdev->irq, qs_intr, IRQF_SHARED, 634 &qs_ata_sht); 635} 636 637module_pci_driver(qs_ata_pci_driver); 638 639MODULE_AUTHOR("Mark Lord"); 640MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver"); 641MODULE_LICENSE("GPL"); 642MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl); 643MODULE_VERSION(DRV_VERSION); 644