1 /* 2 * Regular cardbus driver ("yenta_socket") 3 * 4 * (C) Copyright 1999, 2000 Linus Torvalds 5 * 6 * Changelog: 7 * Aug 2002: Manfred Spraul <manfred@colorfullife.com> 8 * Dynamically adjust the size of the bridge resource 9 * 10 * May 2003: Dominik Brodowski <linux@brodo.de> 11 * Merge pci_socket.c and yenta.c into one file 12 */ 13 #include <linux/init.h> 14 #include <linux/pci.h> 15 #include <linux/sched.h> 16 #include <linux/workqueue.h> 17 #include <linux/interrupt.h> 18 #include <linux/delay.h> 19 #include <linux/module.h> 20 21 #include <pcmcia/version.h> 22 #include <pcmcia/cs_types.h> 23 #include <pcmcia/ss.h> 24 #include <pcmcia/cs.h> 25 26 #include <asm/io.h> 27 28 #include "yenta_socket.h" 29 #include "i82365.h" 30 31 static int disable_clkrun; 32 module_param(disable_clkrun, bool, 0444); 33 MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option"); 34 35 #if 0 36 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) 37 #else 38 #define debug(x,args...) 39 #endif 40 41 /* Don't ask.. */ 42 #define to_cycles(ns) ((ns)/120) 43 #define to_ns(cycles) ((cycles)*120) 44 45 static int yenta_probe_cb_irq(struct yenta_socket *socket); 46 47 48 static unsigned int override_bios; 49 module_param(override_bios, uint, 0000); 50 MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation"); 51 52 /* 53 * Generate easy-to-use ways of reading a cardbus sockets 54 * regular memory space ("cb_xxx"), configuration space 55 * ("config_xxx") and compatibility space ("exca_xxxx") 56 */ 57 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg) 58 { 59 u32 val = readl(socket->base + reg); 60 debug("%p %04x %08x\n", socket, reg, val); 61 return val; 62 } 63 64 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val) 65 { 66 debug("%p %04x %08x\n", socket, reg, val); 67 writel(val, socket->base + reg); 68 } 69 70 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) 71 { 72 u8 val; 73 pci_read_config_byte(socket->dev, offset, &val); 74 debug("%p %04x %02x\n", socket, offset, val); 75 return val; 76 } 77 78 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset) 79 { 80 u16 val; 81 pci_read_config_word(socket->dev, offset, &val); 82 debug("%p %04x %04x\n", socket, offset, val); 83 return val; 84 } 85 86 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset) 87 { 88 u32 val; 89 pci_read_config_dword(socket->dev, offset, &val); 90 debug("%p %04x %08x\n", socket, offset, val); 91 return val; 92 } 93 94 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val) 95 { 96 debug("%p %04x %02x\n", socket, offset, val); 97 pci_write_config_byte(socket->dev, offset, val); 98 } 99 100 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val) 101 { 102 debug("%p %04x %04x\n", socket, offset, val); 103 pci_write_config_word(socket->dev, offset, val); 104 } 105 106 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val) 107 { 108 debug("%p %04x %08x\n", socket, offset, val); 109 pci_write_config_dword(socket->dev, offset, val); 110 } 111 112 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg) 113 { 114 u8 val = readb(socket->base + 0x800 + reg); 115 debug("%p %04x %02x\n", socket, reg, val); 116 return val; 117 } 118 119 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg) 120 { 121 u16 val; 122 val = readb(socket->base + 0x800 + reg); 123 val |= readb(socket->base + 0x800 + reg + 1) << 8; 124 debug("%p %04x %04x\n", socket, reg, val); 125 return val; 126 } 127 128 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val) 129 { 130 debug("%p %04x %02x\n", socket, reg, val); 131 writeb(val, socket->base + 0x800 + reg); 132 } 133 134 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) 135 { 136 debug("%p %04x %04x\n", socket, reg, val); 137 writeb(val, socket->base + 0x800 + reg); 138 writeb(val >> 8, socket->base + 0x800 + reg + 1); 139 } 140 141 /* 142 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend 143 * on what kind of card is inserted.. 144 */ 145 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) 146 { 147 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 148 unsigned int val; 149 u32 state = cb_readl(socket, CB_SOCKET_STATE); 150 151 val = (state & CB_3VCARD) ? SS_3VCARD : 0; 152 val |= (state & CB_XVCARD) ? SS_XVCARD : 0; 153 val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD 154 | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; 155 156 if (state & CB_CBCARD) { 157 val |= SS_CARDBUS; 158 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0; 159 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT; 160 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0; 161 } else { 162 u8 status = exca_readb(socket, I365_STATUS); 163 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0; 164 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { 165 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG; 166 } else { 167 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD; 168 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN; 169 } 170 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0; 171 val |= (status & I365_CS_READY) ? SS_READY : 0; 172 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0; 173 } 174 175 *value = val; 176 return 0; 177 } 178 179 static int yenta_Vcc_power(u32 control) 180 { 181 switch (control & CB_SC_VCC_MASK) { 182 case CB_SC_VCC_5V: return 50; 183 case CB_SC_VCC_3V: return 33; 184 default: return 0; 185 } 186 } 187 188 static int yenta_Vpp_power(u32 control) 189 { 190 switch (control & CB_SC_VPP_MASK) { 191 case CB_SC_VPP_12V: return 120; 192 case CB_SC_VPP_5V: return 50; 193 case CB_SC_VPP_3V: return 33; 194 default: return 0; 195 } 196 } 197 198 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state) 199 { 200 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 201 u8 reg; 202 u32 control; 203 204 control = cb_readl(socket, CB_SOCKET_CONTROL); 205 206 state->Vcc = yenta_Vcc_power(control); 207 state->Vpp = yenta_Vpp_power(control); 208 state->io_irq = socket->io_irq; 209 210 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { 211 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL); 212 if (bridge & CB_BRIDGE_CRST) 213 state->flags |= SS_RESET; 214 return 0; 215 } 216 217 /* 16-bit card state.. */ 218 reg = exca_readb(socket, I365_POWER); 219 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0; 220 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0; 221 222 reg = exca_readb(socket, I365_INTCTL); 223 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET; 224 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0; 225 226 reg = exca_readb(socket, I365_CSCINT); 227 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0; 228 if (state->flags & SS_IOCARD) { 229 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0; 230 } else { 231 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0; 232 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0; 233 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0; 234 } 235 236 return 0; 237 } 238 239 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state) 240 { 241 u32 reg = 0; /* CB_SC_STPCLK? */ 242 switch (state->Vcc) { 243 case 33: reg = CB_SC_VCC_3V; break; 244 case 50: reg = CB_SC_VCC_5V; break; 245 default: reg = 0; break; 246 } 247 switch (state->Vpp) { 248 case 33: reg |= CB_SC_VPP_3V; break; 249 case 50: reg |= CB_SC_VPP_5V; break; 250 case 120: reg |= CB_SC_VPP_12V; break; 251 } 252 if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) 253 cb_writel(socket, CB_SOCKET_CONTROL, reg); 254 } 255 256 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) 257 { 258 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 259 u16 bridge; 260 261 yenta_set_power(socket, state); 262 socket->io_irq = state->io_irq; 263 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR); 264 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { 265 u8 intr; 266 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0; 267 268 /* ISA interrupt control? */ 269 intr = exca_readb(socket, I365_INTCTL); 270 intr = (intr & ~0xf); 271 if (!socket->cb_irq) { 272 intr |= state->io_irq; 273 bridge |= CB_BRIDGE_INTR; 274 } 275 exca_writeb(socket, I365_INTCTL, intr); 276 } else { 277 u8 reg; 278 279 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA); 280 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET; 281 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0; 282 if (state->io_irq != socket->cb_irq) { 283 reg |= state->io_irq; 284 bridge |= CB_BRIDGE_INTR; 285 } 286 exca_writeb(socket, I365_INTCTL, reg); 287 288 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK); 289 reg |= I365_PWR_NORESET; 290 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO; 291 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT; 292 if (exca_readb(socket, I365_POWER) != reg) 293 exca_writeb(socket, I365_POWER, reg); 294 295 /* CSC interrupt: no ISA irq for CSC */ 296 reg = I365_CSC_DETECT; 297 if (state->flags & SS_IOCARD) { 298 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG; 299 } else { 300 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1; 301 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2; 302 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY; 303 } 304 exca_writeb(socket, I365_CSCINT, reg); 305 exca_readb(socket, I365_CSC); 306 if(sock->zoom_video) 307 sock->zoom_video(sock, state->flags & SS_ZVCARD); 308 } 309 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 310 /* Socket event mask: get card insert/remove events.. */ 311 cb_writel(socket, CB_SOCKET_EVENT, -1); 312 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); 313 return 0; 314 } 315 316 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) 317 { 318 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 319 int map; 320 unsigned char ioctl, addr, enable; 321 322 map = io->map; 323 324 if (map > 1) 325 return -EINVAL; 326 327 enable = I365_ENA_IO(map); 328 addr = exca_readb(socket, I365_ADDRWIN); 329 330 /* Disable the window before changing it.. */ 331 if (addr & enable) { 332 addr &= ~enable; 333 exca_writeb(socket, I365_ADDRWIN, addr); 334 } 335 336 exca_writew(socket, I365_IO(map)+I365_W_START, io->start); 337 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop); 338 339 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map); 340 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map); 341 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map); 342 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map); 343 exca_writeb(socket, I365_IOCTL, ioctl); 344 345 if (io->flags & MAP_ACTIVE) 346 exca_writeb(socket, I365_ADDRWIN, addr | enable); 347 return 0; 348 } 349 350 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) 351 { 352 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 353 struct pci_bus_region region; 354 int map; 355 unsigned char addr, enable; 356 unsigned int start, stop, card_start; 357 unsigned short word; 358 359 pcibios_resource_to_bus(socket->dev, ®ion, mem->res); 360 361 map = mem->map; 362 start = region.start; 363 stop = region.end; 364 card_start = mem->card_start; 365 366 if (map > 4 || start > stop || ((start ^ stop) >> 24) || 367 (card_start >> 26) || mem->speed > 1000) 368 return -EINVAL; 369 370 enable = I365_ENA_MEM(map); 371 addr = exca_readb(socket, I365_ADDRWIN); 372 if (addr & enable) { 373 addr &= ~enable; 374 exca_writeb(socket, I365_ADDRWIN, addr); 375 } 376 377 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24); 378 379 word = (start >> 12) & 0x0fff; 380 if (mem->flags & MAP_16BIT) 381 word |= I365_MEM_16BIT; 382 if (mem->flags & MAP_0WS) 383 word |= I365_MEM_0WS; 384 exca_writew(socket, I365_MEM(map) + I365_W_START, word); 385 386 word = (stop >> 12) & 0x0fff; 387 switch (to_cycles(mem->speed)) { 388 case 0: break; 389 case 1: word |= I365_MEM_WS0; break; 390 case 2: word |= I365_MEM_WS1; break; 391 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break; 392 } 393 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word); 394 395 word = ((card_start - start) >> 12) & 0x3fff; 396 if (mem->flags & MAP_WRPROT) 397 word |= I365_MEM_WRPROT; 398 if (mem->flags & MAP_ATTRIB) 399 word |= I365_MEM_REG; 400 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word); 401 402 if (mem->flags & MAP_ACTIVE) 403 exca_writeb(socket, I365_ADDRWIN, addr | enable); 404 return 0; 405 } 406 407 408 static unsigned int yenta_events(struct yenta_socket *socket) 409 { 410 u8 csc; 411 u32 cb_event; 412 unsigned int events; 413 414 /* Clear interrupt status for the event */ 415 cb_event = cb_readl(socket, CB_SOCKET_EVENT); 416 cb_writel(socket, CB_SOCKET_EVENT, cb_event); 417 418 csc = exca_readb(socket, I365_CSC); 419 420 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; 421 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; 422 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { 423 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; 424 } else { 425 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0; 426 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; 427 events |= (csc & I365_CSC_READY) ? SS_READY : 0; 428 } 429 return events; 430 } 431 432 433 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) 434 { 435 unsigned int events; 436 struct yenta_socket *socket = (struct yenta_socket *) dev_id; 437 438 events = yenta_events(socket); 439 if (events) { 440 pcmcia_parse_events(&socket->socket, events); 441 return IRQ_HANDLED; 442 } 443 return IRQ_NONE; 444 } 445 446 static void yenta_interrupt_wrapper(unsigned long data) 447 { 448 struct yenta_socket *socket = (struct yenta_socket *) data; 449 450 yenta_interrupt(0, (void *)socket, NULL); 451 socket->poll_timer.expires = jiffies + HZ; 452 add_timer(&socket->poll_timer); 453 } 454 455 static void yenta_clear_maps(struct yenta_socket *socket) 456 { 457 int i; 458 struct resource res = { .start = 0, .end = 0x0fff }; 459 pccard_io_map io = { 0, 0, 0, 0, 1 }; 460 pccard_mem_map mem = { .res = &res, }; 461 462 yenta_set_socket(&socket->socket, &dead_socket); 463 for (i = 0; i < 2; i++) { 464 io.map = i; 465 yenta_set_io_map(&socket->socket, &io); 466 } 467 for (i = 0; i < 5; i++) { 468 mem.map = i; 469 yenta_set_mem_map(&socket->socket, &mem); 470 } 471 } 472 473 /* Called at resume and initialization events */ 474 static int yenta_sock_init(struct pcmcia_socket *sock) 475 { 476 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 477 u32 state; 478 u16 bridge; 479 480 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR; 481 if (!socket->cb_irq) 482 bridge |= CB_BRIDGE_INTR; 483 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 484 485 exca_writeb(socket, I365_GBLCTL, 0x00); 486 exca_writeb(socket, I365_GENCTL, 0x00); 487 488 /* Redo card voltage interrogation */ 489 state = cb_readl(socket, CB_SOCKET_STATE); 490 if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | 491 CB_3VCARD | CB_XVCARD | CB_YVCARD))) 492 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); 493 494 yenta_clear_maps(socket); 495 496 if (socket->type && socket->type->sock_init) 497 socket->type->sock_init(socket); 498 499 /* Re-enable CSC interrupts */ 500 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); 501 502 return 0; 503 } 504 505 static int yenta_sock_suspend(struct pcmcia_socket *sock) 506 { 507 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 508 509 /* Disable CSC interrupts */ 510 cb_writel(socket, CB_SOCKET_MASK, 0x0); 511 512 return 0; 513 } 514 515 /* 516 * Use an adaptive allocation for the memory resource, 517 * sometimes the memory behind pci bridges is limited: 518 * 1/8 of the size of the io window of the parent. 519 * max 4 MB, min 16 kB. 520 */ 521 #define BRIDGE_MEM_MAX 4*1024*1024 522 #define BRIDGE_MEM_MIN 16*1024 523 524 #define BRIDGE_IO_MAX 256 525 #define BRIDGE_IO_MIN 32 526 527 #ifndef PCIBIOS_MIN_CARDBUS_IO 528 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO 529 #endif 530 531 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type) 532 { 533 struct pci_bus *bus; 534 struct resource *root, *res; 535 u32 start, end; 536 u32 align, size, min; 537 unsigned offset; 538 unsigned mask; 539 540 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ 541 mask = ~0xfff; 542 if (type & IORESOURCE_IO) 543 mask = ~3; 544 545 offset = 0x1c + 8*nr; 546 bus = socket->dev->subordinate; 547 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; 548 res->name = bus->name; 549 res->flags = type; 550 res->start = 0; 551 res->end = 0; 552 root = pci_find_parent_resource(socket->dev, res); 553 554 if (!root) 555 return; 556 557 start = config_readl(socket, offset) & mask; 558 end = config_readl(socket, offset+4) | ~mask; 559 if (start && end > start && !override_bios) { 560 res->start = start; 561 res->end = end; 562 if (request_resource(root, res) == 0) 563 return; 564 printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n", 565 pci_name(socket->dev), nr); 566 res->start = res->end = 0; 567 } 568 569 if (type & IORESOURCE_IO) { 570 align = 1024; 571 size = BRIDGE_IO_MAX; 572 min = BRIDGE_IO_MIN; 573 start = PCIBIOS_MIN_CARDBUS_IO; 574 end = ~0U; 575 } else { 576 unsigned long avail = root->end - root->start; 577 int i; 578 size = BRIDGE_MEM_MAX; 579 if (size > avail/8) { 580 size=(avail+1)/8; 581 /* round size down to next power of 2 */ 582 i = 0; 583 while ((size /= 2) != 0) 584 i++; 585 size = 1 << i; 586 } 587 if (size < BRIDGE_MEM_MIN) 588 size = BRIDGE_MEM_MIN; 589 min = BRIDGE_MEM_MIN; 590 align = size; 591 start = PCIBIOS_MIN_MEM; 592 end = ~0U; 593 } 594 595 do { 596 if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) { 597 config_writel(socket, offset, res->start); 598 config_writel(socket, offset+4, res->end); 599 return; 600 } 601 size = size/2; 602 align = size; 603 } while (size >= min); 604 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n", 605 pci_name(socket->dev), type); 606 res->start = res->end = 0; 607 } 608 609 /* 610 * Allocate the bridge mappings for the device.. 611 */ 612 static void yenta_allocate_resources(struct yenta_socket *socket) 613 { 614 yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH); 615 yenta_allocate_res(socket, 1, IORESOURCE_MEM); 616 yenta_allocate_res(socket, 2, IORESOURCE_IO); 617 yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */ 618 } 619 620 621 /* 622 * Free the bridge mappings for the device.. 623 */ 624 static void yenta_free_resources(struct yenta_socket *socket) 625 { 626 int i; 627 for (i=0;i<4;i++) { 628 struct resource *res; 629 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i; 630 if (res->start != 0 && res->end != 0) 631 release_resource(res); 632 res->start = res->end = 0; 633 } 634 } 635 636 637 /* 638 * Close it down - release our resources and go home.. 639 */ 640 static void yenta_close(struct pci_dev *dev) 641 { 642 struct yenta_socket *sock = pci_get_drvdata(dev); 643 644 /* we don't want a dying socket registered */ 645 pcmcia_unregister_socket(&sock->socket); 646 647 /* Disable all events so we don't die in an IRQ storm */ 648 cb_writel(sock, CB_SOCKET_MASK, 0x0); 649 exca_writeb(sock, I365_CSCINT, 0); 650 651 if (sock->cb_irq) 652 free_irq(sock->cb_irq, sock); 653 else 654 del_timer_sync(&sock->poll_timer); 655 656 if (sock->base) 657 iounmap(sock->base); 658 yenta_free_resources(sock); 659 660 pci_release_regions(dev); 661 pci_disable_device(dev); 662 pci_set_drvdata(dev, NULL); 663 } 664 665 666 static struct pccard_operations yenta_socket_operations = { 667 .init = yenta_sock_init, 668 .suspend = yenta_sock_suspend, 669 .get_status = yenta_get_status, 670 .get_socket = yenta_get_socket, 671 .set_socket = yenta_set_socket, 672 .set_io_map = yenta_set_io_map, 673 .set_mem_map = yenta_set_mem_map, 674 }; 675 676 677 #include "ti113x.h" 678 #include "ricoh.h" 679 #include "topic.h" 680 #include "o2micro.h" 681 682 enum { 683 CARDBUS_TYPE_DEFAULT = -1, 684 CARDBUS_TYPE_TI, 685 CARDBUS_TYPE_TI113X, 686 CARDBUS_TYPE_TI12XX, 687 CARDBUS_TYPE_TI1250, 688 CARDBUS_TYPE_RICOH, 689 CARDBUS_TYPE_TOPIC97, 690 CARDBUS_TYPE_O2MICRO, 691 }; 692 693 /* 694 * Different cardbus controllers have slightly different 695 * initialization sequences etc details. List them here.. 696 */ 697 static struct cardbus_type cardbus_type[] = { 698 [CARDBUS_TYPE_TI] = { 699 .override = ti_override, 700 .save_state = ti_save_state, 701 .restore_state = ti_restore_state, 702 .sock_init = ti_init, 703 }, 704 [CARDBUS_TYPE_TI113X] = { 705 .override = ti113x_override, 706 .save_state = ti_save_state, 707 .restore_state = ti_restore_state, 708 .sock_init = ti_init, 709 }, 710 [CARDBUS_TYPE_TI12XX] = { 711 .override = ti12xx_override, 712 .save_state = ti_save_state, 713 .restore_state = ti_restore_state, 714 .sock_init = ti_init, 715 }, 716 [CARDBUS_TYPE_TI1250] = { 717 .override = ti1250_override, 718 .save_state = ti_save_state, 719 .restore_state = ti_restore_state, 720 .sock_init = ti_init, 721 }, 722 [CARDBUS_TYPE_RICOH] = { 723 .override = ricoh_override, 724 .save_state = ricoh_save_state, 725 .restore_state = ricoh_restore_state, 726 }, 727 [CARDBUS_TYPE_TOPIC97] = { 728 .override = topic97_override, 729 }, 730 [CARDBUS_TYPE_O2MICRO] = { 731 .override = o2micro_override, 732 .restore_state = o2micro_restore_state, 733 }, 734 }; 735 736 737 /* 738 * Only probe "regular" interrupts, don't 739 * touch dangerous spots like the mouse irq, 740 * because there are mice that apparently 741 * get really confused if they get fondled 742 * too intimately. 743 * 744 * Default to 11, 10, 9, 7, 6, 5, 4, 3. 745 */ 746 static u32 isa_interrupts = 0x0ef8; 747 748 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask) 749 { 750 int i; 751 unsigned long val; 752 u16 bridge_ctrl; 753 u32 mask; 754 755 /* Set up ISA irq routing to probe the ISA irqs.. */ 756 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); 757 if (!(bridge_ctrl & CB_BRIDGE_INTR)) { 758 bridge_ctrl |= CB_BRIDGE_INTR; 759 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 760 } 761 762 /* 763 * Probe for usable interrupts using the force 764 * register to generate bogus card status events. 765 */ 766 cb_writel(socket, CB_SOCKET_EVENT, -1); 767 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); 768 exca_writeb(socket, I365_CSCINT, 0); 769 val = probe_irq_on() & isa_irq_mask; 770 for (i = 1; i < 16; i++) { 771 if (!((val >> i) & 1)) 772 continue; 773 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4)); 774 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); 775 udelay(100); 776 cb_writel(socket, CB_SOCKET_EVENT, -1); 777 } 778 cb_writel(socket, CB_SOCKET_MASK, 0); 779 exca_writeb(socket, I365_CSCINT, 0); 780 781 mask = probe_irq_mask(val) & 0xffff; 782 783 bridge_ctrl &= ~CB_BRIDGE_INTR; 784 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 785 786 return mask; 787 } 788 789 790 /* interrupt handler, only used during probing */ 791 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs) 792 { 793 struct yenta_socket *socket = (struct yenta_socket *) dev_id; 794 u8 csc; 795 u32 cb_event; 796 797 /* Clear interrupt status for the event */ 798 cb_event = cb_readl(socket, CB_SOCKET_EVENT); 799 cb_writel(socket, CB_SOCKET_EVENT, -1); 800 csc = exca_readb(socket, I365_CSC); 801 802 if (cb_event || csc) { 803 socket->probe_status = 1; 804 return IRQ_HANDLED; 805 } 806 807 return IRQ_NONE; 808 } 809 810 /* probes the PCI interrupt, use only on override functions */ 811 static int yenta_probe_cb_irq(struct yenta_socket *socket) 812 { 813 u16 bridge_ctrl; 814 815 if (!socket->cb_irq) 816 return -1; 817 818 socket->probe_status = 0; 819 820 /* disable ISA interrupts */ 821 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); 822 bridge_ctrl &= ~CB_BRIDGE_INTR; 823 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 824 825 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) { 826 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n"); 827 return -1; 828 } 829 830 /* generate interrupt, wait */ 831 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG); 832 cb_writel(socket, CB_SOCKET_EVENT, -1); 833 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); 834 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); 835 836 msleep(100); 837 838 /* disable interrupts */ 839 cb_writel(socket, CB_SOCKET_MASK, 0); 840 exca_writeb(socket, I365_CSCINT, 0); 841 cb_writel(socket, CB_SOCKET_EVENT, -1); 842 exca_readb(socket, I365_CSC); 843 844 free_irq(socket->cb_irq, socket); 845 846 return (int) socket->probe_status; 847 } 848 849 850 851 /* 852 * Set static data that doesn't need re-initializing.. 853 */ 854 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask) 855 { 856 socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS; 857 socket->socket.map_size = 0x1000; 858 socket->socket.pci_irq = socket->cb_irq; 859 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); 860 socket->socket.cb_dev = socket->dev; 861 862 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n", 863 socket->socket.irq_mask, socket->cb_irq); 864 } 865 866 /* 867 * Initialize the standard cardbus registers 868 */ 869 static void yenta_config_init(struct yenta_socket *socket) 870 { 871 u16 bridge; 872 struct pci_dev *dev = socket->dev; 873 874 pci_set_power_state(socket->dev, 0); 875 876 config_writel(socket, CB_LEGACY_MODE_BASE, 0); 877 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start); 878 config_writew(socket, PCI_COMMAND, 879 PCI_COMMAND_IO | 880 PCI_COMMAND_MEMORY | 881 PCI_COMMAND_MASTER | 882 PCI_COMMAND_WAIT); 883 884 /* MAGIC NUMBERS! Fixme */ 885 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4); 886 config_writeb(socket, PCI_LATENCY_TIMER, 168); 887 config_writel(socket, PCI_PRIMARY_BUS, 888 (176 << 24) | /* sec. latency timer */ 889 (dev->subordinate->subordinate << 16) | /* subordinate bus */ 890 (dev->subordinate->secondary << 8) | /* secondary bus */ 891 dev->subordinate->primary); /* primary bus */ 892 893 /* 894 * Set up the bridging state: 895 * - enable write posting. 896 * - memory window 0 prefetchable, window 1 non-prefetchable 897 * - PCI interrupts enabled if a PCI interrupt exists.. 898 */ 899 bridge = config_readw(socket, CB_BRIDGE_CONTROL); 900 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); 901 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR; 902 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 903 } 904 905 /* 906 * Initialize a cardbus controller. Make sure we have a usable 907 * interrupt, and that we can map the cardbus area. Fill in the 908 * socket information structure.. 909 */ 910 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id) 911 { 912 struct yenta_socket *socket; 913 int ret; 914 915 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL); 916 if (!socket) 917 return -ENOMEM; 918 memset(socket, 0, sizeof(*socket)); 919 920 /* prepare pcmcia_socket */ 921 socket->socket.ops = ¥ta_socket_operations; 922 socket->socket.resource_ops = &pccard_nonstatic_ops; 923 socket->socket.dev.dev = &dev->dev; 924 socket->socket.driver_data = socket; 925 socket->socket.owner = THIS_MODULE; 926 927 /* prepare struct yenta_socket */ 928 socket->dev = dev; 929 pci_set_drvdata(dev, socket); 930 931 /* 932 * Do some basic sanity checking.. 933 */ 934 if (pci_enable_device(dev)) { 935 ret = -EBUSY; 936 goto free; 937 } 938 939 ret = pci_request_regions(dev, "yenta_socket"); 940 if (ret) 941 goto disable; 942 943 if (!pci_resource_start(dev, 0)) { 944 printk(KERN_ERR "No cardbus resource!\n"); 945 ret = -ENODEV; 946 goto release; 947 } 948 949 /* 950 * Ok, start setup.. Map the cardbus registers, 951 * and request the IRQ. 952 */ 953 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000); 954 if (!socket->base) { 955 ret = -ENOMEM; 956 goto release; 957 } 958 959 /* 960 * report the subsystem vendor and device for help debugging 961 * the irq stuff... 962 */ 963 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n", 964 pci_name(dev), dev->subsystem_vendor, dev->subsystem_device); 965 966 yenta_config_init(socket); 967 968 /* Disable all events */ 969 cb_writel(socket, CB_SOCKET_MASK, 0x0); 970 971 /* Set up the bridge regions.. */ 972 yenta_allocate_resources(socket); 973 974 socket->cb_irq = dev->irq; 975 976 /* Do we have special options for the device? */ 977 if (id->driver_data != CARDBUS_TYPE_DEFAULT && 978 id->driver_data < ARRAY_SIZE(cardbus_type)) { 979 socket->type = &cardbus_type[id->driver_data]; 980 981 ret = socket->type->override(socket); 982 if (ret < 0) 983 goto unmap; 984 } 985 986 /* We must finish initialization here */ 987 988 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) { 989 /* No IRQ or request_irq failed. Poll */ 990 socket->cb_irq = 0; /* But zero is a valid IRQ number. */ 991 init_timer(&socket->poll_timer); 992 socket->poll_timer.function = yenta_interrupt_wrapper; 993 socket->poll_timer.data = (unsigned long)socket; 994 socket->poll_timer.expires = jiffies + HZ; 995 add_timer(&socket->poll_timer); 996 } 997 998 /* Figure out what the dang thing can do for the PCMCIA layer... */ 999 yenta_get_socket_capabilities(socket, isa_interrupts); 1000 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE)); 1001 1002 /* Register it with the pcmcia layer.. */ 1003 ret = pcmcia_register_socket(&socket->socket); 1004 if (ret == 0) 1005 goto out; 1006 1007 unmap: 1008 iounmap(socket->base); 1009 release: 1010 pci_release_regions(dev); 1011 disable: 1012 pci_disable_device(dev); 1013 free: 1014 kfree(socket); 1015 out: 1016 return ret; 1017 } 1018 1019 1020 static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state) 1021 { 1022 struct yenta_socket *socket = pci_get_drvdata(dev); 1023 int ret; 1024 1025 ret = pcmcia_socket_dev_suspend(&dev->dev, state); 1026 1027 if (socket) { 1028 if (socket->type && socket->type->save_state) 1029 socket->type->save_state(socket); 1030 1031 /* FIXME: pci_save_state needs to have a better interface */ 1032 pci_save_state(dev); 1033 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]); 1034 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]); 1035 1036 /* 1037 * Some laptops (IBM T22) do not like us putting the Cardbus 1038 * bridge into D3. At a guess, some other laptop will 1039 * probably require this, so leave it commented out for now. 1040 */ 1041 /* pci_set_power_state(dev, 3); */ 1042 } 1043 1044 return ret; 1045 } 1046 1047 1048 static int yenta_dev_resume (struct pci_dev *dev) 1049 { 1050 struct yenta_socket *socket = pci_get_drvdata(dev); 1051 1052 if (socket) { 1053 pci_set_power_state(dev, 0); 1054 /* FIXME: pci_restore_state needs to have a better interface */ 1055 pci_restore_state(dev); 1056 pci_write_config_dword(dev, 16*4, socket->saved_state[0]); 1057 pci_write_config_dword(dev, 17*4, socket->saved_state[1]); 1058 1059 if (socket->type && socket->type->restore_state) 1060 socket->type->restore_state(socket); 1061 } 1062 1063 return pcmcia_socket_dev_resume(&dev->dev); 1064 } 1065 1066 1067 #define CB_ID(vend,dev,type) \ 1068 { \ 1069 .vendor = vend, \ 1070 .device = dev, \ 1071 .subvendor = PCI_ANY_ID, \ 1072 .subdevice = PCI_ANY_ID, \ 1073 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \ 1074 .class_mask = ~0, \ 1075 .driver_data = CARDBUS_TYPE_##type, \ 1076 } 1077 1078 static struct pci_device_id yenta_table [] = { 1079 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI), 1080 1081 /* 1082 * TBD: Check if these TI variants can use more 1083 * advanced overrides instead. (I can't get the 1084 * data sheets for these devices. --rmk) 1085 */ 1086 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI), 1087 1088 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X), 1089 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X), 1090 1091 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX), 1092 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX), 1093 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX), 1094 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX), 1095 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX), 1096 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX), 1097 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX), 1098 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX), 1099 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX), 1100 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX), 1101 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX), 1102 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX), 1103 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX), 1104 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX), 1105 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX), 1106 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX), 1107 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX), 1108 1109 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250), 1110 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250), 1111 1112 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX), 1113 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX), 1114 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250), 1115 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX), 1116 1117 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH), 1118 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH), 1119 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH), 1120 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH), 1121 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH), 1122 1123 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97), 1124 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97), 1125 1126 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO), 1127 1128 /* match any cardbus bridge */ 1129 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT), 1130 { /* all zeroes */ } 1131 }; 1132 MODULE_DEVICE_TABLE(pci, yenta_table); 1133 1134 1135 static struct pci_driver yenta_cardbus_driver = { 1136 .name = "yenta_cardbus", 1137 .id_table = yenta_table, 1138 .probe = yenta_probe, 1139 .remove = __devexit_p(yenta_close), 1140 .suspend = yenta_dev_suspend, 1141 .resume = yenta_dev_resume, 1142 }; 1143 1144 1145 static int __init yenta_socket_init(void) 1146 { 1147 return pci_register_driver (¥ta_cardbus_driver); 1148 } 1149 1150 1151 static void __exit yenta_socket_exit (void) 1152 { 1153 pci_unregister_driver (¥ta_cardbus_driver); 1154 } 1155 1156 1157 module_init(yenta_socket_init); 1158 module_exit(yenta_socket_exit); 1159 1160 MODULE_LICENSE("GPL"); 1161