drivers/pcmcia/yenta

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This source file includes following definitions.
cb_readl
cb_writel
config_readb
config_readw
config_readl
config_writeb
config_writew
config_writel
exca_readb
exca_readw
exca_writeb
exca_writew
show_yenta_registers
yenta_get_status
yenta_set_power
yenta_set_socket
yenta_set_io_map
yenta_set_mem_map
yenta_interrupt
yenta_interrupt_wrapper
yenta_clear_maps
yenta_interrogate
yenta_sock_init
yenta_sock_suspend
yenta_search_one_res
yenta_search_res
yenta_allocate_res
yenta_allocate_resources
yenta_free_resources
yenta_close
yenta_probe_irq
yenta_probe_handler
yenta_probe_cb_irq
yenta_get_socket_capabilities
yenta_config_init
yenta_fixup_parent_bridge
yenta_probe
yenta_dev_suspend_noirq
yenta_dev_resume_noirq
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Regular cardbus driver ("yenta_socket")
   4  *
   5  * (C) Copyright 1999, 2000 Linus Torvalds
   6  *
   7  * Changelog:
   8  * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
   9  *      Dynamically adjust the size of the bridge resource
  10  *
  11  * May 2003: Dominik Brodowski <linux@brodo.de>
  12  *      Merge pci_socket.c and yenta.c into one file
  13  */
  14 #include <linux/init.h>
  15 #include <linux/pci.h>
  16 #include <linux/workqueue.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/delay.h>
  19 #include <linux/module.h>
  20 #include <linux/io.h>
  21 #include <linux/slab.h>
  22 
  23 #include <pcmcia/ss.h>
  24 
  25 #include "yenta_socket.h"
  26 #include "i82365.h"
  27 
  28 static bool disable_clkrun;
  29 module_param(disable_clkrun, bool, 0444);
  30 MODULE_PARM_DESC(disable_clkrun,
  31                  "If PC card doesn't function properly, please try this option (TI and Ricoh bridges only)");
  32 
  33 static bool isa_probe = 1;
  34 module_param(isa_probe, bool, 0444);
  35 MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
  36 
  37 static bool pwr_irqs_off;
  38 module_param(pwr_irqs_off, bool, 0644);
  39 MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
  40 
  41 static char o2_speedup[] = "default";
  42 module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
  43 MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
  44         "or 'default' (uses recommended behaviour for the detected bridge)");
  45 
  46 /*
  47  * Only probe "regular" interrupts, don't
  48  * touch dangerous spots like the mouse irq,
  49  * because there are mice that apparently
  50  * get really confused if they get fondled
  51  * too intimately.
  52  *
  53  * Default to 11, 10, 9, 7, 6, 5, 4, 3.
  54  */
  55 static u32 isa_interrupts = 0x0ef8;
  56 
  57 
  58 #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
  59 
  60 /* Don't ask.. */
  61 #define to_cycles(ns)   ((ns)/120)
  62 #define to_ns(cycles)   ((cycles)*120)
  63 
  64 /*
  65  * yenta PCI irq probing.
  66  * currently only used in the TI/EnE initialization code
  67  */
  68 #ifdef CONFIG_YENTA_TI
  69 static int yenta_probe_cb_irq(struct yenta_socket *socket);
  70 static unsigned int yenta_probe_irq(struct yenta_socket *socket,
  71                                 u32 isa_irq_mask);
  72 #endif
  73 
  74 
  75 static unsigned int override_bios;
  76 module_param(override_bios, uint, 0000);
  77 MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
  78 
  79 /*
  80  * Generate easy-to-use ways of reading a cardbus sockets
  81  * regular memory space ("cb_xxx"), configuration space
  82  * ("config_xxx") and compatibility space ("exca_xxxx")
  83  */
  84 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
  85 {
  86         u32 val = readl(socket->base + reg);
  87         debug("%04x %08x\n", socket, reg, val);
  88         return val;
  89 }
  90 
  91 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  92 {
  93         debug("%04x %08x\n", socket, reg, val);
  94         writel(val, socket->base + reg);
  95         readl(socket->base + reg); /* avoid problems with PCI write posting */
  96 }
  97 
  98 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  99 {
 100         u8 val;
 101         pci_read_config_byte(socket->dev, offset, &val);
 102         debug("%04x %02x\n", socket, offset, val);
 103         return val;
 104 }
 105 
 106 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
 107 {
 108         u16 val;
 109         pci_read_config_word(socket->dev, offset, &val);
 110         debug("%04x %04x\n", socket, offset, val);
 111         return val;
 112 }
 113 
 114 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
 115 {
 116         u32 val;
 117         pci_read_config_dword(socket->dev, offset, &val);
 118         debug("%04x %08x\n", socket, offset, val);
 119         return val;
 120 }
 121 
 122 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
 123 {
 124         debug("%04x %02x\n", socket, offset, val);
 125         pci_write_config_byte(socket->dev, offset, val);
 126 }
 127 
 128 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
 129 {
 130         debug("%04x %04x\n", socket, offset, val);
 131         pci_write_config_word(socket->dev, offset, val);
 132 }
 133 
 134 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
 135 {
 136         debug("%04x %08x\n", socket, offset, val);
 137         pci_write_config_dword(socket->dev, offset, val);
 138 }
 139 
 140 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
 141 {
 142         u8 val = readb(socket->base + 0x800 + reg);
 143         debug("%04x %02x\n", socket, reg, val);
 144         return val;
 145 }
 146 
 147 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
 148 {
 149         u16 val;
 150         val = readb(socket->base + 0x800 + reg);
 151         val |= readb(socket->base + 0x800 + reg + 1) << 8;
 152         debug("%04x %04x\n", socket, reg, val);
 153         return val;
 154 }
 155 
 156 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
 157 {
 158         debug("%04x %02x\n", socket, reg, val);
 159         writeb(val, socket->base + 0x800 + reg);
 160         readb(socket->base + 0x800 + reg); /* PCI write posting... */
 161 }
 162 
 163 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
 164 {
 165         debug("%04x %04x\n", socket, reg, val);
 166         writeb(val, socket->base + 0x800 + reg);
 167         writeb(val >> 8, socket->base + 0x800 + reg + 1);
 168 
 169         /* PCI write posting... */
 170         readb(socket->base + 0x800 + reg);
 171         readb(socket->base + 0x800 + reg + 1);
 172 }
 173 
 174 static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
 175 {
 176         struct pci_dev *dev = to_pci_dev(yentadev);
 177         struct yenta_socket *socket = pci_get_drvdata(dev);
 178         int offset = 0, i;
 179 
 180         offset = snprintf(buf, PAGE_SIZE, "CB registers:");
 181         for (i = 0; i < 0x24; i += 4) {
 182                 unsigned val;
 183                 if (!(i & 15))
 184                         offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
 185                 val = cb_readl(socket, i);
 186                 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
 187         }
 188 
 189         offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
 190         for (i = 0; i < 0x45; i++) {
 191                 unsigned char val;
 192                 if (!(i & 7)) {
 193                         if (i & 8) {
 194                                 memcpy(buf + offset, " -", 2);
 195                                 offset += 2;
 196                         } else
 197                                 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
 198                 }
 199                 val = exca_readb(socket, i);
 200                 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
 201         }
 202         buf[offset++] = '\n';
 203         return offset;
 204 }
 205 
 206 static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
 207 
 208 /*
 209  * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
 210  * on what kind of card is inserted..
 211  */
 212 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
 213 {
 214         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 215         unsigned int val;
 216         u32 state = cb_readl(socket, CB_SOCKET_STATE);
 217 
 218         val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
 219         val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
 220         val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
 221         val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
 222 
 223 
 224         if (state & CB_CBCARD) {
 225                 val |= SS_CARDBUS;
 226                 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
 227                 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
 228                 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
 229         } else if (state & CB_16BITCARD) {
 230                 u8 status = exca_readb(socket, I365_STATUS);
 231                 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
 232                 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 233                         val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
 234                 } else {
 235                         val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
 236                         val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
 237                 }
 238                 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
 239                 val |= (status & I365_CS_READY) ? SS_READY : 0;
 240                 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
 241         }
 242 
 243         *value = val;
 244         return 0;
 245 }
 246 
 247 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
 248 {
 249         /* some birdges require to use the ExCA registers to power 16bit cards */
 250         if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
 251             (socket->flags & YENTA_16BIT_POWER_EXCA)) {
 252                 u8 reg, old;
 253                 reg = old = exca_readb(socket, I365_POWER);
 254                 reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
 255 
 256                 /* i82365SL-DF style */
 257                 if (socket->flags & YENTA_16BIT_POWER_DF) {
 258                         switch (state->Vcc) {
 259                         case 33:
 260                                 reg |= I365_VCC_3V;
 261                                 break;
 262                         case 50:
 263                                 reg |= I365_VCC_5V;
 264                                 break;
 265                         default:
 266                                 reg = 0;
 267                                 break;
 268                         }
 269                         switch (state->Vpp) {
 270                         case 33:
 271                         case 50:
 272                                 reg |= I365_VPP1_5V;
 273                                 break;
 274                         case 120:
 275                                 reg |= I365_VPP1_12V;
 276                                 break;
 277                         }
 278                 } else {
 279                         /* i82365SL-B style */
 280                         switch (state->Vcc) {
 281                         case 50:
 282                                 reg |= I365_VCC_5V;
 283                                 break;
 284                         default:
 285                                 reg = 0;
 286                                 break;
 287                         }
 288                         switch (state->Vpp) {
 289                         case 50:
 290                                 reg |= I365_VPP1_5V | I365_VPP2_5V;
 291                                 break;
 292                         case 120:
 293                                 reg |= I365_VPP1_12V | I365_VPP2_12V;
 294                                 break;
 295                         }
 296                 }
 297 
 298                 if (reg != old)
 299                         exca_writeb(socket, I365_POWER, reg);
 300         } else {
 301                 u32 reg = 0;    /* CB_SC_STPCLK? */
 302                 switch (state->Vcc) {
 303                 case 33:
 304                         reg = CB_SC_VCC_3V;
 305                         break;
 306                 case 50:
 307                         reg = CB_SC_VCC_5V;
 308                         break;
 309                 default:
 310                         reg = 0;
 311                         break;
 312                 }
 313                 switch (state->Vpp) {
 314                 case 33:
 315                         reg |= CB_SC_VPP_3V;
 316                         break;
 317                 case 50:
 318                         reg |= CB_SC_VPP_5V;
 319                         break;
 320                 case 120:
 321                         reg |= CB_SC_VPP_12V;
 322                         break;
 323                 }
 324                 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
 325                         cb_writel(socket, CB_SOCKET_CONTROL, reg);
 326         }
 327 }
 328 
 329 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 330 {
 331         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 332         u16 bridge;
 333 
 334         /* if powering down: do it immediately */
 335         if (state->Vcc == 0)
 336                 yenta_set_power(socket, state);
 337 
 338         socket->io_irq = state->io_irq;
 339         bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
 340         if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
 341                 u8 intr;
 342                 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
 343 
 344                 /* ISA interrupt control? */
 345                 intr = exca_readb(socket, I365_INTCTL);
 346                 intr = (intr & ~0xf);
 347                 if (!socket->dev->irq) {
 348                         intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
 349                         bridge |= CB_BRIDGE_INTR;
 350                 }
 351                 exca_writeb(socket, I365_INTCTL, intr);
 352         }  else {
 353                 u8 reg;
 354 
 355                 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
 356                 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
 357                 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
 358                 if (state->io_irq != socket->dev->irq) {
 359                         reg |= state->io_irq;
 360                         bridge |= CB_BRIDGE_INTR;
 361                 }
 362                 exca_writeb(socket, I365_INTCTL, reg);
 363 
 364                 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
 365                 reg |= I365_PWR_NORESET;
 366                 if (state->flags & SS_PWR_AUTO)
 367                         reg |= I365_PWR_AUTO;
 368                 if (state->flags & SS_OUTPUT_ENA)
 369                         reg |= I365_PWR_OUT;
 370                 if (exca_readb(socket, I365_POWER) != reg)
 371                         exca_writeb(socket, I365_POWER, reg);
 372 
 373                 /* CSC interrupt: no ISA irq for CSC */
 374                 reg = exca_readb(socket, I365_CSCINT);
 375                 reg &= I365_CSC_IRQ_MASK;
 376                 reg |= I365_CSC_DETECT;
 377                 if (state->flags & SS_IOCARD) {
 378                         if (state->csc_mask & SS_STSCHG)
 379                                 reg |= I365_CSC_STSCHG;
 380                 } else {
 381                         if (state->csc_mask & SS_BATDEAD)
 382                                 reg |= I365_CSC_BVD1;
 383                         if (state->csc_mask & SS_BATWARN)
 384                                 reg |= I365_CSC_BVD2;
 385                         if (state->csc_mask & SS_READY)
 386                                 reg |= I365_CSC_READY;
 387                 }
 388                 exca_writeb(socket, I365_CSCINT, reg);
 389                 exca_readb(socket, I365_CSC);
 390                 if (sock->zoom_video)
 391                         sock->zoom_video(sock, state->flags & SS_ZVCARD);
 392         }
 393         config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 394         /* Socket event mask: get card insert/remove events.. */
 395         cb_writel(socket, CB_SOCKET_EVENT, -1);
 396         cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 397 
 398         /* if powering up: do it as the last step when the socket is configured */
 399         if (state->Vcc != 0)
 400                 yenta_set_power(socket, state);
 401         return 0;
 402 }
 403 
 404 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 405 {
 406         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 407         int map;
 408         unsigned char ioctl, addr, enable;
 409 
 410         map = io->map;
 411 
 412         if (map > 1)
 413                 return -EINVAL;
 414 
 415         enable = I365_ENA_IO(map);
 416         addr = exca_readb(socket, I365_ADDRWIN);
 417 
 418         /* Disable the window before changing it.. */
 419         if (addr & enable) {
 420                 addr &= ~enable;
 421                 exca_writeb(socket, I365_ADDRWIN, addr);
 422         }
 423 
 424         exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
 425         exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
 426 
 427         ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 428         if (io->flags & MAP_0WS)
 429                 ioctl |= I365_IOCTL_0WS(map);
 430         if (io->flags & MAP_16BIT)
 431                 ioctl |= I365_IOCTL_16BIT(map);
 432         if (io->flags & MAP_AUTOSZ)
 433                 ioctl |= I365_IOCTL_IOCS16(map);
 434         exca_writeb(socket, I365_IOCTL, ioctl);
 435 
 436         if (io->flags & MAP_ACTIVE)
 437                 exca_writeb(socket, I365_ADDRWIN, addr | enable);
 438         return 0;
 439 }
 440 
 441 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 442 {
 443         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 444         struct pci_bus_region region;
 445         int map;
 446         unsigned char addr, enable;
 447         unsigned int start, stop, card_start;
 448         unsigned short word;
 449 
 450         pcibios_resource_to_bus(socket->dev->bus, &region, mem->res);
 451 
 452         map = mem->map;
 453         start = region.start;
 454         stop = region.end;
 455         card_start = mem->card_start;
 456 
 457         if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
 458             (card_start >> 26) || mem->speed > 1000)
 459                 return -EINVAL;
 460 
 461         enable = I365_ENA_MEM(map);
 462         addr = exca_readb(socket, I365_ADDRWIN);
 463         if (addr & enable) {
 464                 addr &= ~enable;
 465                 exca_writeb(socket, I365_ADDRWIN, addr);
 466         }
 467 
 468         exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
 469 
 470         word = (start >> 12) & 0x0fff;
 471         if (mem->flags & MAP_16BIT)
 472                 word |= I365_MEM_16BIT;
 473         if (mem->flags & MAP_0WS)
 474                 word |= I365_MEM_0WS;
 475         exca_writew(socket, I365_MEM(map) + I365_W_START, word);
 476 
 477         word = (stop >> 12) & 0x0fff;
 478         switch (to_cycles(mem->speed)) {
 479         case 0:
 480                 break;
 481         case 1:
 482                 word |= I365_MEM_WS0;
 483                 break;
 484         case 2:
 485                 word |= I365_MEM_WS1;
 486                 break;
 487         default:
 488                 word |= I365_MEM_WS1 | I365_MEM_WS0;
 489                 break;
 490         }
 491         exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
 492 
 493         word = ((card_start - start) >> 12) & 0x3fff;
 494         if (mem->flags & MAP_WRPROT)
 495                 word |= I365_MEM_WRPROT;
 496         if (mem->flags & MAP_ATTRIB)
 497                 word |= I365_MEM_REG;
 498         exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
 499 
 500         if (mem->flags & MAP_ACTIVE)
 501                 exca_writeb(socket, I365_ADDRWIN, addr | enable);
 502         return 0;
 503 }
 504 
 505 
 506 
 507 static irqreturn_t yenta_interrupt(int irq, void *dev_id)
 508 {
 509         unsigned int events;
 510         struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 511         u8 csc;
 512         u32 cb_event;
 513 
 514         /* Clear interrupt status for the event */
 515         cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 516         cb_writel(socket, CB_SOCKET_EVENT, cb_event);
 517 
 518         csc = exca_readb(socket, I365_CSC);
 519 
 520         if (!(cb_event || csc))
 521                 return IRQ_NONE;
 522 
 523         events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
 524         events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
 525         if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 526                 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 527         } else {
 528                 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 529                 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 530                 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 531         }
 532 
 533         if (events)
 534                 pcmcia_parse_events(&socket->socket, events);
 535 
 536         return IRQ_HANDLED;
 537 }
 538 
 539 static void yenta_interrupt_wrapper(struct timer_list *t)
 540 {
 541         struct yenta_socket *socket = from_timer(socket, t, poll_timer);
 542 
 543         yenta_interrupt(0, (void *)socket);
 544         socket->poll_timer.expires = jiffies + HZ;
 545         add_timer(&socket->poll_timer);
 546 }
 547 
 548 static void yenta_clear_maps(struct yenta_socket *socket)
 549 {
 550         int i;
 551         struct resource res = { .start = 0, .end = 0x0fff };
 552         pccard_io_map io = { 0, 0, 0, 0, 1 };
 553         pccard_mem_map mem = { .res = &res, };
 554 
 555         yenta_set_socket(&socket->socket, &dead_socket);
 556         for (i = 0; i < 2; i++) {
 557                 io.map = i;
 558                 yenta_set_io_map(&socket->socket, &io);
 559         }
 560         for (i = 0; i < 5; i++) {
 561                 mem.map = i;
 562                 yenta_set_mem_map(&socket->socket, &mem);
 563         }
 564 }
 565 
 566 /* redoes voltage interrogation if required */
 567 static void yenta_interrogate(struct yenta_socket *socket)
 568 {
 569         u32 state;
 570 
 571         state = cb_readl(socket, CB_SOCKET_STATE);
 572         if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
 573             (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
 574             ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
 575                 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
 576 }
 577 
 578 /* Called at resume and initialization events */
 579 static int yenta_sock_init(struct pcmcia_socket *sock)
 580 {
 581         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 582 
 583         exca_writeb(socket, I365_GBLCTL, 0x00);
 584         exca_writeb(socket, I365_GENCTL, 0x00);
 585 
 586         /* Redo card voltage interrogation */
 587         yenta_interrogate(socket);
 588 
 589         yenta_clear_maps(socket);
 590 
 591         if (socket->type && socket->type->sock_init)
 592                 socket->type->sock_init(socket);
 593 
 594         /* Re-enable CSC interrupts */
 595         cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 596 
 597         return 0;
 598 }
 599 
 600 static int yenta_sock_suspend(struct pcmcia_socket *sock)
 601 {
 602         struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 603 
 604         /* Disable CSC interrupts */
 605         cb_writel(socket, CB_SOCKET_MASK, 0x0);
 606 
 607         return 0;
 608 }
 609 
 610 /*
 611  * Use an adaptive allocation for the memory resource,
 612  * sometimes the memory behind pci bridges is limited:
 613  * 1/8 of the size of the io window of the parent.
 614  * max 4 MB, min 16 kB. We try very hard to not get below
 615  * the "ACC" values, though.
 616  */
 617 #define BRIDGE_MEM_MAX (4*1024*1024)
 618 #define BRIDGE_MEM_ACC (128*1024)
 619 #define BRIDGE_MEM_MIN (16*1024)
 620 
 621 #define BRIDGE_IO_MAX 512
 622 #define BRIDGE_IO_ACC 256
 623 #define BRIDGE_IO_MIN 32
 624 
 625 #ifndef PCIBIOS_MIN_CARDBUS_IO
 626 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
 627 #endif
 628 
 629 static int yenta_search_one_res(struct resource *root, struct resource *res,
 630                                 u32 min)
 631 {
 632         u32 align, size, start, end;
 633 
 634         if (res->flags & IORESOURCE_IO) {
 635                 align = 1024;
 636                 size = BRIDGE_IO_MAX;
 637                 start = PCIBIOS_MIN_CARDBUS_IO;
 638                 end = ~0U;
 639         } else {
 640                 unsigned long avail = root->end - root->start;
 641                 int i;
 642                 size = BRIDGE_MEM_MAX;
 643                 if (size > avail/8) {
 644                         size = (avail+1)/8;
 645                         /* round size down to next power of 2 */
 646                         i = 0;
 647                         while ((size /= 2) != 0)
 648                                 i++;
 649                         size = 1 << i;
 650                 }
 651                 if (size < min)
 652                         size = min;
 653                 align = size;
 654                 start = PCIBIOS_MIN_MEM;
 655                 end = ~0U;
 656         }
 657 
 658         do {
 659                 if (allocate_resource(root, res, size, start, end, align,
 660                                       NULL, NULL) == 0) {
 661                         return 1;
 662                 }
 663                 size = size/2;
 664                 align = size;
 665         } while (size >= min);
 666 
 667         return 0;
 668 }
 669 
 670 
 671 static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
 672                             u32 min)
 673 {
 674         struct resource *root;
 675         int i;
 676 
 677         pci_bus_for_each_resource(socket->dev->bus, root, i) {
 678                 if (!root)
 679                         continue;
 680 
 681                 if ((res->flags ^ root->flags) &
 682                     (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
 683                         continue; /* Wrong type */
 684 
 685                 if (yenta_search_one_res(root, res, min))
 686                         return 1;
 687         }
 688         return 0;
 689 }
 690 
 691 static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
 692 {
 693         struct pci_dev *dev = socket->dev;
 694         struct resource *res;
 695         struct pci_bus_region region;
 696         unsigned mask;
 697 
 698         res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
 699         /* Already allocated? */
 700         if (res->parent)
 701                 return 0;
 702 
 703         /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
 704         mask = ~0xfff;
 705         if (type & IORESOURCE_IO)
 706                 mask = ~3;
 707 
 708         res->name = dev->subordinate->name;
 709         res->flags = type;
 710 
 711         region.start = config_readl(socket, addr_start) & mask;
 712         region.end = config_readl(socket, addr_end) | ~mask;
 713         if (region.start && region.end > region.start && !override_bios) {
 714                 pcibios_bus_to_resource(dev->bus, res, &region);
 715                 if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
 716                         return 0;
 717                 dev_info(&dev->dev,
 718                          "Preassigned resource %d busy or not available, reconfiguring...\n",
 719                          nr);
 720         }
 721 
 722         if (type & IORESOURCE_IO) {
 723                 if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
 724                     (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
 725                     (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
 726                         return 1;
 727         } else {
 728                 if (type & IORESOURCE_PREFETCH) {
 729                         if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 730                             (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 731                             (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 732                                 return 1;
 733                         /* Approximating prefetchable by non-prefetchable */
 734                         res->flags = IORESOURCE_MEM;
 735                 }
 736                 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
 737                     (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
 738                     (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
 739                         return 1;
 740         }
 741 
 742         dev_info(&dev->dev,
 743                  "no resource of type %x available, trying to continue...\n",
 744                  type);
 745         res->start = res->end = res->flags = 0;
 746         return 0;
 747 }
 748 
 749 /*
 750  * Allocate the bridge mappings for the device..
 751  */
 752 static void yenta_allocate_resources(struct yenta_socket *socket)
 753 {
 754         int program = 0;
 755         program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
 756                            PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
 757         program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
 758                            PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
 759         program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
 760                            PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
 761         program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
 762                            PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
 763         if (program)
 764                 pci_setup_cardbus(socket->dev->subordinate);
 765 }
 766 
 767 
 768 /*
 769  * Free the bridge mappings for the device..
 770  */
 771 static void yenta_free_resources(struct yenta_socket *socket)
 772 {
 773         int i;
 774         for (i = 0; i < 4; i++) {
 775                 struct resource *res;
 776                 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
 777                 if (res->start != 0 && res->end != 0)
 778                         release_resource(res);
 779                 res->start = res->end = res->flags = 0;
 780         }
 781 }
 782 
 783 
 784 /*
 785  * Close it down - release our resources and go home..
 786  */
 787 static void yenta_close(struct pci_dev *dev)
 788 {
 789         struct yenta_socket *sock = pci_get_drvdata(dev);
 790 
 791         /* Remove the register attributes */
 792         device_remove_file(&dev->dev, &dev_attr_yenta_registers);
 793 
 794         /* we don't want a dying socket registered */
 795         pcmcia_unregister_socket(&sock->socket);
 796 
 797         /* Disable all events so we don't die in an IRQ storm */
 798         cb_writel(sock, CB_SOCKET_MASK, 0x0);
 799         exca_writeb(sock, I365_CSCINT, 0);
 800 
 801         if (sock->cb_irq)
 802                 free_irq(sock->cb_irq, sock);
 803         else
 804                 del_timer_sync(&sock->poll_timer);
 805 
 806         iounmap(sock->base);
 807         yenta_free_resources(sock);
 808 
 809         pci_release_regions(dev);
 810         pci_disable_device(dev);
 811         pci_set_drvdata(dev, NULL);
 812         kfree(sock);
 813 }
 814 
 815 
 816 static struct pccard_operations yenta_socket_operations = {
 817         .init                   = yenta_sock_init,
 818         .suspend                = yenta_sock_suspend,
 819         .get_status             = yenta_get_status,
 820         .set_socket             = yenta_set_socket,
 821         .set_io_map             = yenta_set_io_map,
 822         .set_mem_map            = yenta_set_mem_map,
 823 };
 824 
 825 
 826 #ifdef CONFIG_YENTA_TI
 827 #include "ti113x.h"
 828 #endif
 829 #ifdef CONFIG_YENTA_RICOH
 830 #include "ricoh.h"
 831 #endif
 832 #ifdef CONFIG_YENTA_TOSHIBA
 833 #include "topic.h"
 834 #endif
 835 #ifdef CONFIG_YENTA_O2
 836 #include "o2micro.h"
 837 #endif
 838 
 839 enum {
 840         CARDBUS_TYPE_DEFAULT = -1,
 841         CARDBUS_TYPE_TI,
 842         CARDBUS_TYPE_TI113X,
 843         CARDBUS_TYPE_TI12XX,
 844         CARDBUS_TYPE_TI1250,
 845         CARDBUS_TYPE_RICOH,
 846         CARDBUS_TYPE_TOPIC95,
 847         CARDBUS_TYPE_TOPIC97,
 848         CARDBUS_TYPE_O2MICRO,
 849         CARDBUS_TYPE_ENE,
 850 };
 851 
 852 /*
 853  * Different cardbus controllers have slightly different
 854  * initialization sequences etc details. List them here..
 855  */
 856 static struct cardbus_type cardbus_type[] = {
 857 #ifdef CONFIG_YENTA_TI
 858         [CARDBUS_TYPE_TI]       = {
 859                 .override       = ti_override,
 860                 .save_state     = ti_save_state,
 861                 .restore_state  = ti_restore_state,
 862                 .sock_init      = ti_init,
 863         },
 864         [CARDBUS_TYPE_TI113X]   = {
 865                 .override       = ti113x_override,
 866                 .save_state     = ti_save_state,
 867                 .restore_state  = ti_restore_state,
 868                 .sock_init      = ti_init,
 869         },
 870         [CARDBUS_TYPE_TI12XX]   = {
 871                 .override       = ti12xx_override,
 872                 .save_state     = ti_save_state,
 873                 .restore_state  = ti_restore_state,
 874                 .sock_init      = ti_init,
 875         },
 876         [CARDBUS_TYPE_TI1250]   = {
 877                 .override       = ti1250_override,
 878                 .save_state     = ti_save_state,
 879                 .restore_state  = ti_restore_state,
 880                 .sock_init      = ti_init,
 881         },
 882         [CARDBUS_TYPE_ENE]      = {
 883                 .override       = ene_override,
 884                 .save_state     = ti_save_state,
 885                 .restore_state  = ti_restore_state,
 886                 .sock_init      = ti_init,
 887         },
 888 #endif
 889 #ifdef CONFIG_YENTA_RICOH
 890         [CARDBUS_TYPE_RICOH]    = {
 891                 .override       = ricoh_override,
 892                 .save_state     = ricoh_save_state,
 893                 .restore_state  = ricoh_restore_state,
 894         },
 895 #endif
 896 #ifdef CONFIG_YENTA_TOSHIBA
 897         [CARDBUS_TYPE_TOPIC95]  = {
 898                 .override       = topic95_override,
 899         },
 900         [CARDBUS_TYPE_TOPIC97]  = {
 901                 .override       = topic97_override,
 902         },
 903 #endif
 904 #ifdef CONFIG_YENTA_O2
 905         [CARDBUS_TYPE_O2MICRO]  = {
 906                 .override       = o2micro_override,
 907                 .restore_state  = o2micro_restore_state,
 908         },
 909 #endif
 910 };
 911 
 912 
 913 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
 914 {
 915         int i;
 916         unsigned long val;
 917         u32 mask;
 918         u8 reg;
 919 
 920         /*
 921          * Probe for usable interrupts using the force
 922          * register to generate bogus card status events.
 923          */
 924         cb_writel(socket, CB_SOCKET_EVENT, -1);
 925         cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 926         reg = exca_readb(socket, I365_CSCINT);
 927         exca_writeb(socket, I365_CSCINT, 0);
 928         val = probe_irq_on() & isa_irq_mask;
 929         for (i = 1; i < 16; i++) {
 930                 if (!((val >> i) & 1))
 931                         continue;
 932                 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
 933                 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 934                 udelay(100);
 935                 cb_writel(socket, CB_SOCKET_EVENT, -1);
 936         }
 937         cb_writel(socket, CB_SOCKET_MASK, 0);
 938         exca_writeb(socket, I365_CSCINT, reg);
 939 
 940         mask = probe_irq_mask(val) & 0xffff;
 941 
 942         return mask;
 943 }
 944 
 945 
 946 /*
 947  * yenta PCI irq probing.
 948  * currently only used in the TI/EnE initialization code
 949  */
 950 #ifdef CONFIG_YENTA_TI
 951 
 952 /* interrupt handler, only used during probing */
 953 static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
 954 {
 955         struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 956         u8 csc;
 957         u32 cb_event;
 958 
 959         /* Clear interrupt status for the event */
 960         cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 961         cb_writel(socket, CB_SOCKET_EVENT, -1);
 962         csc = exca_readb(socket, I365_CSC);
 963 
 964         if (cb_event || csc) {
 965                 socket->probe_status = 1;
 966                 return IRQ_HANDLED;
 967         }
 968 
 969         return IRQ_NONE;
 970 }
 971 
 972 /* probes the PCI interrupt, use only on override functions */
 973 static int yenta_probe_cb_irq(struct yenta_socket *socket)
 974 {
 975         u8 reg = 0;
 976 
 977         if (!socket->cb_irq)
 978                 return -1;
 979 
 980         socket->probe_status = 0;
 981 
 982         if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
 983                 dev_warn(&socket->dev->dev,
 984                          "request_irq() in yenta_probe_cb_irq() failed!\n");
 985                 return -1;
 986         }
 987 
 988         /* generate interrupt, wait */
 989         if (!socket->dev->irq)
 990                 reg = exca_readb(socket, I365_CSCINT);
 991         exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
 992         cb_writel(socket, CB_SOCKET_EVENT, -1);
 993         cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 994         cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 995 
 996         msleep(100);
 997 
 998         /* disable interrupts */
 999         cb_writel(socket, CB_SOCKET_MASK, 0);
1000         exca_writeb(socket, I365_CSCINT, reg);
1001         cb_writel(socket, CB_SOCKET_EVENT, -1);
1002         exca_readb(socket, I365_CSC);
1003 
1004         free_irq(socket->cb_irq, socket);
1005 
1006         return (int) socket->probe_status;
1007 }
1008 
1009 #endif /* CONFIG_YENTA_TI */
1010 
1011 
1012 /*
1013  * Set static data that doesn't need re-initializing..
1014  */
1015 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1016 {
1017         socket->socket.pci_irq = socket->cb_irq;
1018         if (isa_probe)
1019                 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1020         else
1021                 socket->socket.irq_mask = 0;
1022 
1023         dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
1024                  socket->socket.irq_mask, socket->cb_irq);
1025 }
1026 
1027 /*
1028  * Initialize the standard cardbus registers
1029  */
1030 static void yenta_config_init(struct yenta_socket *socket)
1031 {
1032         u16 bridge;
1033         struct pci_dev *dev = socket->dev;
1034         struct pci_bus_region region;
1035 
1036         pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
1037 
1038         config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1039         config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1040         config_writew(socket, PCI_COMMAND,
1041                         PCI_COMMAND_IO |
1042                         PCI_COMMAND_MEMORY |
1043                         PCI_COMMAND_MASTER |
1044                         PCI_COMMAND_WAIT);
1045 
1046         /* MAGIC NUMBERS! Fixme */
1047         config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1048         config_writeb(socket, PCI_LATENCY_TIMER, 168);
1049         config_writel(socket, PCI_PRIMARY_BUS,
1050                 (176 << 24) |                      /* sec. latency timer */
1051                 ((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
1052                 ((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
1053                 dev->subordinate->primary);                /* primary bus */
1054 
1055         /*
1056          * Set up the bridging state:
1057          *  - enable write posting.
1058          *  - memory window 0 prefetchable, window 1 non-prefetchable
1059          *  - PCI interrupts enabled if a PCI interrupt exists..
1060          */
1061         bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1062         bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1063         bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1064         config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1065 }
1066 
1067 /**
1068  * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1069  * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1070  *
1071  * Checks if devices on the bus which the CardBus bridge bridges to would be
1072  * invisible during PCI scans because of a misconfigured subordinate number
1073  * of the parent brige - some BIOSes seem to be too lazy to set it right.
1074  * Does the fixup carefully by checking how far it can go without conflicts.
1075  * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1076  */
1077 static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1078 {
1079         struct pci_bus *sibling;
1080         unsigned char upper_limit;
1081         /*
1082          * We only check and fix the parent bridge: All systems which need
1083          * this fixup that have been reviewed are laptops and the only bridge
1084          * which needed fixing was the parent bridge of the CardBus bridge:
1085          */
1086         struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1087 
1088         /* Check bus numbers are already set up correctly: */
1089         if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1090                 return; /* The subordinate number is ok, nothing to do */
1091 
1092         if (!bridge_to_fix->parent)
1093                 return; /* Root bridges are ok */
1094 
1095         /* stay within the limits of the bus range of the parent: */
1096         upper_limit = bridge_to_fix->parent->busn_res.end;
1097 
1098         /* check the bus ranges of all sibling bridges to prevent overlap */
1099         list_for_each_entry(sibling, &bridge_to_fix->parent->children,
1100                         node) {
1101                 /*
1102                  * If the sibling has a higher secondary bus number
1103                  * and it's secondary is equal or smaller than our
1104                  * current upper limit, set the new upper limit to
1105                  * the bus number below the sibling's range:
1106                  */
1107                 if (sibling->busn_res.start > bridge_to_fix->busn_res.end
1108                     && sibling->busn_res.start <= upper_limit)
1109                         upper_limit = sibling->busn_res.start - 1;
1110         }
1111 
1112         /* Show that the wanted subordinate number is not possible: */
1113         if (cardbus_bridge->busn_res.end > upper_limit)
1114                 dev_warn(&cardbus_bridge->dev,
1115                          "Upper limit for fixing this bridge's parent bridge: #%02x\n",
1116                          upper_limit);
1117 
1118         /* If we have room to increase the bridge's subordinate number, */
1119         if (bridge_to_fix->busn_res.end < upper_limit) {
1120 
1121                 /* use the highest number of the hidden bus, within limits */
1122                 unsigned char subordinate_to_assign =
1123                         min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1124 
1125                 dev_info(&bridge_to_fix->dev,
1126                          "Raising subordinate bus# of parent bus (#%02x) from #%02x to #%02x\n",
1127                          bridge_to_fix->number,
1128                          (int)bridge_to_fix->busn_res.end,
1129                          subordinate_to_assign);
1130 
1131                 /* Save the new subordinate in the bus struct of the bridge */
1132                 bridge_to_fix->busn_res.end = subordinate_to_assign;
1133 
1134                 /* and update the PCI config space with the new subordinate */
1135                 pci_write_config_byte(bridge_to_fix->self,
1136                         PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1137         }
1138 }
1139 
1140 /*
1141  * Initialize a cardbus controller. Make sure we have a usable
1142  * interrupt, and that we can map the cardbus area. Fill in the
1143  * socket information structure..
1144  */
1145 static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1146 {
1147         struct yenta_socket *socket;
1148         int ret;
1149 
1150         /*
1151          * If we failed to assign proper bus numbers for this cardbus
1152          * controller during PCI probe, its subordinate pci_bus is NULL.
1153          * Bail out if so.
1154          */
1155         if (!dev->subordinate) {
1156                 dev_err(&dev->dev, "no bus associated! (try 'pci=assign-busses')\n");
1157                 return -ENODEV;
1158         }
1159 
1160         socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1161         if (!socket)
1162                 return -ENOMEM;
1163 
1164         /* prepare pcmcia_socket */
1165         socket->socket.ops = &yenta_socket_operations;
1166         socket->socket.resource_ops = &pccard_nonstatic_ops;
1167         socket->socket.dev.parent = &dev->dev;
1168         socket->socket.driver_data = socket;
1169         socket->socket.owner = THIS_MODULE;
1170         socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1171         socket->socket.map_size = 0x1000;
1172         socket->socket.cb_dev = dev;
1173 
1174         /* prepare struct yenta_socket */
1175         socket->dev = dev;
1176         pci_set_drvdata(dev, socket);
1177 
1178         /*
1179          * Do some basic sanity checking..
1180          */
1181         if (pci_enable_device(dev)) {
1182                 ret = -EBUSY;
1183                 goto free;
1184         }
1185 
1186         ret = pci_request_regions(dev, "yenta_socket");
1187         if (ret)
1188                 goto disable;
1189 
1190         if (!pci_resource_start(dev, 0)) {
1191                 dev_err(&dev->dev, "No cardbus resource!\n");
1192                 ret = -ENODEV;
1193                 goto release;
1194         }
1195 
1196         /*
1197          * Ok, start setup.. Map the cardbus registers,
1198          * and request the IRQ.
1199          */
1200         socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1201         if (!socket->base) {
1202                 ret = -ENOMEM;
1203                 goto release;
1204         }
1205 
1206         /*
1207          * report the subsystem vendor and device for help debugging
1208          * the irq stuff...
1209          */
1210         dev_info(&dev->dev, "CardBus bridge found [%04x:%04x]\n",
1211                  dev->subsystem_vendor, dev->subsystem_device);
1212 
1213         yenta_config_init(socket);
1214 
1215         /* Disable all events */
1216         cb_writel(socket, CB_SOCKET_MASK, 0x0);
1217 
1218         /* Set up the bridge regions.. */
1219         yenta_allocate_resources(socket);
1220 
1221         socket->cb_irq = dev->irq;
1222 
1223         /* Do we have special options for the device? */
1224         if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1225             id->driver_data < ARRAY_SIZE(cardbus_type)) {
1226                 socket->type = &cardbus_type[id->driver_data];
1227 
1228                 ret = socket->type->override(socket);
1229                 if (ret < 0)
1230                         goto unmap;
1231         }
1232 
1233         /* We must finish initialization here */
1234 
1235         if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1236                 /* No IRQ or request_irq failed. Poll */
1237                 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1238                 timer_setup(&socket->poll_timer, yenta_interrupt_wrapper, 0);
1239                 mod_timer(&socket->poll_timer, jiffies + HZ);
1240                 dev_info(&dev->dev,
1241                          "no PCI IRQ, CardBus support disabled for this socket.\n");
1242                 dev_info(&dev->dev,
1243                          "check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
1244         } else {
1245                 socket->socket.features |= SS_CAP_CARDBUS;
1246         }
1247 
1248         /* Figure out what the dang thing can do for the PCMCIA layer... */
1249         yenta_interrogate(socket);
1250         yenta_get_socket_capabilities(socket, isa_interrupts);
1251         dev_info(&dev->dev, "Socket status: %08x\n",
1252                  cb_readl(socket, CB_SOCKET_STATE));
1253 
1254         yenta_fixup_parent_bridge(dev->subordinate);
1255 
1256         /* Register it with the pcmcia layer.. */
1257         ret = pcmcia_register_socket(&socket->socket);
1258         if (ret)
1259                 goto free_irq;
1260 
1261         /* Add the yenta register attributes */
1262         ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1263         if (ret)
1264                 goto unregister_socket;
1265 
1266         return ret;
1267 
1268         /* error path... */
1269  unregister_socket:
1270         pcmcia_unregister_socket(&socket->socket);
1271  free_irq:
1272         if (socket->cb_irq)
1273                 free_irq(socket->cb_irq, socket);
1274         else
1275                 del_timer_sync(&socket->poll_timer);
1276  unmap:
1277         iounmap(socket->base);
1278         yenta_free_resources(socket);
1279  release:
1280         pci_release_regions(dev);
1281  disable:
1282         pci_disable_device(dev);
1283  free:
1284         pci_set_drvdata(dev, NULL);
1285         kfree(socket);
1286         return ret;
1287 }
1288 
1289 #ifdef CONFIG_PM
1290 static int yenta_dev_suspend_noirq(struct device *dev)
1291 {
1292         struct pci_dev *pdev = to_pci_dev(dev);
1293         struct yenta_socket *socket = pci_get_drvdata(pdev);
1294 
1295         if (!socket)
1296                 return 0;
1297 
1298         if (socket->type && socket->type->save_state)
1299                 socket->type->save_state(socket);
1300 
1301         pci_save_state(pdev);
1302         pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1303         pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1304         pci_disable_device(pdev);
1305 
1306         return 0;
1307 }
1308 
1309 static int yenta_dev_resume_noirq(struct device *dev)
1310 {
1311         struct pci_dev *pdev = to_pci_dev(dev);
1312         struct yenta_socket *socket = pci_get_drvdata(pdev);
1313         int ret;
1314 
1315         if (!socket)
1316                 return 0;
1317 
1318         pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1319         pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1320 
1321         ret = pci_enable_device(pdev);
1322         if (ret)
1323                 return ret;
1324 
1325         pci_set_master(pdev);
1326 
1327         if (socket->type && socket->type->restore_state)
1328                 socket->type->restore_state(socket);
1329 
1330         return 0;
1331 }
1332 
1333 static const struct dev_pm_ops yenta_pm_ops = {
1334         .suspend_noirq = yenta_dev_suspend_noirq,
1335         .resume_noirq = yenta_dev_resume_noirq,
1336         .freeze_noirq = yenta_dev_suspend_noirq,
1337         .thaw_noirq = yenta_dev_resume_noirq,
1338         .poweroff_noirq = yenta_dev_suspend_noirq,
1339         .restore_noirq = yenta_dev_resume_noirq,
1340 };
1341 
1342 #define YENTA_PM_OPS    (&yenta_pm_ops)
1343 #else
1344 #define YENTA_PM_OPS    NULL
1345 #endif
1346 
1347 #define CB_ID(vend, dev, type)                          \
1348         {                                               \
1349                 .vendor         = vend,                 \
1350                 .device         = dev,                  \
1351                 .subvendor      = PCI_ANY_ID,           \
1352                 .subdevice      = PCI_ANY_ID,           \
1353                 .class          = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1354                 .class_mask     = ~0,                   \
1355                 .driver_data    = CARDBUS_TYPE_##type,  \
1356         }
1357 
1358 static const struct pci_device_id yenta_table[] = {
1359         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1360 
1361         /*
1362          * TBD: Check if these TI variants can use more
1363          * advanced overrides instead.  (I can't get the
1364          * data sheets for these devices. --rmk)
1365          */
1366 #ifdef CONFIG_YENTA_TI
1367         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1368 
1369         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1370         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1371 
1372         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1373         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1374         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1375         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1376         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1377         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1378         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1379         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1380         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1381         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1382         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1383         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1384         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1385         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1386         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1387         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1388         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1389 
1390         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1391         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1392 
1393         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1394         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1395         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1396         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1397         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1398         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1399         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1400         CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1401 
1402         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1403         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1404         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1405         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1406         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1407         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1408         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1409         CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1410 #endif /* CONFIG_YENTA_TI */
1411 
1412 #ifdef CONFIG_YENTA_RICOH
1413         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1414         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1415         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1416         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1417         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1418 #endif
1419 
1420 #ifdef CONFIG_YENTA_TOSHIBA
1421         CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1422         CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1423         CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1424 #endif
1425 
1426 #ifdef CONFIG_YENTA_O2
1427         CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1428 #endif
1429 
1430         /* match any cardbus bridge */
1431         CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1432         { /* all zeroes */ }
1433 };
1434 MODULE_DEVICE_TABLE(pci, yenta_table);
1435 
1436 
1437 static struct pci_driver yenta_cardbus_driver = {
1438         .name           = "yenta_cardbus",
1439         .id_table       = yenta_table,
1440         .probe          = yenta_probe,
1441         .remove         = yenta_close,
1442         .driver.pm      = YENTA_PM_OPS,
1443 };
1444 
1445 module_pci_driver(yenta_cardbus_driver);
1446 
1447 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/pcmcia/yenta_socket.c

DEFINITIONS
