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 static int isa_probe = 1; 36 module_param(isa_probe, bool, 0444); 37 MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing"); 38 39 static int pwr_irqs_off; 40 module_param(pwr_irqs_off, bool, 0644); 41 MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!"); 42 43 #if 0 44 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) 45 #else 46 #define debug(x,args...) 47 #endif 48 49 /* Don't ask.. */ 50 #define to_cycles(ns) ((ns)/120) 51 #define to_ns(cycles) ((cycles)*120) 52 53 static int yenta_probe_cb_irq(struct yenta_socket *socket); 54 55 56 static unsigned int override_bios; 57 module_param(override_bios, uint, 0000); 58 MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation"); 59 60 /* 61 * Generate easy-to-use ways of reading a cardbus sockets 62 * regular memory space ("cb_xxx"), configuration space 63 * ("config_xxx") and compatibility space ("exca_xxxx") 64 */ 65 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg) 66 { 67 u32 val = readl(socket->base + reg); 68 debug("%p %04x %08x\n", socket, reg, val); 69 return val; 70 } 71 72 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val) 73 { 74 debug("%p %04x %08x\n", socket, reg, val); 75 writel(val, socket->base + reg); 76 } 77 78 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) 79 { 80 u8 val; 81 pci_read_config_byte(socket->dev, offset, &val); 82 debug("%p %04x %02x\n", socket, offset, val); 83 return val; 84 } 85 86 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset) 87 { 88 u16 val; 89 pci_read_config_word(socket->dev, offset, &val); 90 debug("%p %04x %04x\n", socket, offset, val); 91 return val; 92 } 93 94 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset) 95 { 96 u32 val; 97 pci_read_config_dword(socket->dev, offset, &val); 98 debug("%p %04x %08x\n", socket, offset, val); 99 return val; 100 } 101 102 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val) 103 { 104 debug("%p %04x %02x\n", socket, offset, val); 105 pci_write_config_byte(socket->dev, offset, val); 106 } 107 108 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val) 109 { 110 debug("%p %04x %04x\n", socket, offset, val); 111 pci_write_config_word(socket->dev, offset, val); 112 } 113 114 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val) 115 { 116 debug("%p %04x %08x\n", socket, offset, val); 117 pci_write_config_dword(socket->dev, offset, val); 118 } 119 120 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg) 121 { 122 u8 val = readb(socket->base + 0x800 + reg); 123 debug("%p %04x %02x\n", socket, reg, val); 124 return val; 125 } 126 127 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg) 128 { 129 u16 val; 130 val = readb(socket->base + 0x800 + reg); 131 val |= readb(socket->base + 0x800 + reg + 1) << 8; 132 debug("%p %04x %04x\n", socket, reg, val); 133 return val; 134 } 135 136 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val) 137 { 138 debug("%p %04x %02x\n", socket, reg, val); 139 writeb(val, socket->base + 0x800 + reg); 140 } 141 142 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) 143 { 144 debug("%p %04x %04x\n", socket, reg, val); 145 writeb(val, socket->base + 0x800 + reg); 146 writeb(val >> 8, socket->base + 0x800 + reg + 1); 147 } 148 149 /* 150 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend 151 * on what kind of card is inserted.. 152 */ 153 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) 154 { 155 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 156 unsigned int val; 157 u32 state = cb_readl(socket, CB_SOCKET_STATE); 158 159 val = (state & CB_3VCARD) ? SS_3VCARD : 0; 160 val |= (state & CB_XVCARD) ? SS_XVCARD : 0; 161 val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; 162 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0; 163 164 165 if (state & CB_CBCARD) { 166 val |= SS_CARDBUS; 167 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0; 168 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT; 169 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0; 170 } else if (state & CB_16BITCARD) { 171 u8 status = exca_readb(socket, I365_STATUS); 172 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0; 173 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { 174 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG; 175 } else { 176 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD; 177 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN; 178 } 179 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0; 180 val |= (status & I365_CS_READY) ? SS_READY : 0; 181 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0; 182 } 183 184 *value = val; 185 return 0; 186 } 187 188 static int yenta_Vcc_power(u32 control) 189 { 190 switch (control & CB_SC_VCC_MASK) { 191 case CB_SC_VCC_5V: return 50; 192 case CB_SC_VCC_3V: return 33; 193 default: return 0; 194 } 195 } 196 197 static int yenta_Vpp_power(u32 control) 198 { 199 switch (control & CB_SC_VPP_MASK) { 200 case CB_SC_VPP_12V: return 120; 201 case CB_SC_VPP_5V: return 50; 202 case CB_SC_VPP_3V: return 33; 203 default: return 0; 204 } 205 } 206 207 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state) 208 { 209 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 210 u8 reg; 211 u32 control; 212 213 control = cb_readl(socket, CB_SOCKET_CONTROL); 214 215 state->Vcc = yenta_Vcc_power(control); 216 state->Vpp = yenta_Vpp_power(control); 217 state->io_irq = socket->io_irq; 218 219 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { 220 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL); 221 if (bridge & CB_BRIDGE_CRST) 222 state->flags |= SS_RESET; 223 return 0; 224 } 225 226 /* 16-bit card state.. */ 227 reg = exca_readb(socket, I365_POWER); 228 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0; 229 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0; 230 231 reg = exca_readb(socket, I365_INTCTL); 232 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET; 233 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0; 234 235 reg = exca_readb(socket, I365_CSCINT); 236 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0; 237 if (state->flags & SS_IOCARD) { 238 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0; 239 } else { 240 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0; 241 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0; 242 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0; 243 } 244 245 return 0; 246 } 247 248 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state) 249 { 250 u32 reg = 0; /* CB_SC_STPCLK? */ 251 switch (state->Vcc) { 252 case 33: reg = CB_SC_VCC_3V; break; 253 case 50: reg = CB_SC_VCC_5V; break; 254 default: reg = 0; break; 255 } 256 switch (state->Vpp) { 257 case 33: reg |= CB_SC_VPP_3V; break; 258 case 50: reg |= CB_SC_VPP_5V; break; 259 case 120: reg |= CB_SC_VPP_12V; break; 260 } 261 if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) 262 cb_writel(socket, CB_SOCKET_CONTROL, reg); 263 } 264 265 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) 266 { 267 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 268 u16 bridge; 269 270 yenta_set_power(socket, state); 271 socket->io_irq = state->io_irq; 272 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR); 273 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { 274 u8 intr; 275 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0; 276 277 /* ISA interrupt control? */ 278 intr = exca_readb(socket, I365_INTCTL); 279 intr = (intr & ~0xf); 280 if (!socket->cb_irq) { 281 intr |= state->io_irq; 282 bridge |= CB_BRIDGE_INTR; 283 } 284 exca_writeb(socket, I365_INTCTL, intr); 285 } else { 286 u8 reg; 287 288 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA); 289 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET; 290 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0; 291 if (state->io_irq != socket->cb_irq) { 292 reg |= state->io_irq; 293 bridge |= CB_BRIDGE_INTR; 294 } 295 exca_writeb(socket, I365_INTCTL, reg); 296 297 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK); 298 reg |= I365_PWR_NORESET; 299 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO; 300 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT; 301 if (exca_readb(socket, I365_POWER) != reg) 302 exca_writeb(socket, I365_POWER, reg); 303 304 /* CSC interrupt: no ISA irq for CSC */ 305 reg = I365_CSC_DETECT; 306 if (state->flags & SS_IOCARD) { 307 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG; 308 } else { 309 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1; 310 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2; 311 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY; 312 } 313 exca_writeb(socket, I365_CSCINT, reg); 314 exca_readb(socket, I365_CSC); 315 if(sock->zoom_video) 316 sock->zoom_video(sock, state->flags & SS_ZVCARD); 317 } 318 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 319 /* Socket event mask: get card insert/remove events.. */ 320 cb_writel(socket, CB_SOCKET_EVENT, -1); 321 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); 322 return 0; 323 } 324 325 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) 326 { 327 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 328 int map; 329 unsigned char ioctl, addr, enable; 330 331 map = io->map; 332 333 if (map > 1) 334 return -EINVAL; 335 336 enable = I365_ENA_IO(map); 337 addr = exca_readb(socket, I365_ADDRWIN); 338 339 /* Disable the window before changing it.. */ 340 if (addr & enable) { 341 addr &= ~enable; 342 exca_writeb(socket, I365_ADDRWIN, addr); 343 } 344 345 exca_writew(socket, I365_IO(map)+I365_W_START, io->start); 346 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop); 347 348 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map); 349 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map); 350 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map); 351 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map); 352 exca_writeb(socket, I365_IOCTL, ioctl); 353 354 if (io->flags & MAP_ACTIVE) 355 exca_writeb(socket, I365_ADDRWIN, addr | enable); 356 return 0; 357 } 358 359 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) 360 { 361 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 362 struct pci_bus_region region; 363 int map; 364 unsigned char addr, enable; 365 unsigned int start, stop, card_start; 366 unsigned short word; 367 368 pcibios_resource_to_bus(socket->dev, ®ion, mem->res); 369 370 map = mem->map; 371 start = region.start; 372 stop = region.end; 373 card_start = mem->card_start; 374 375 if (map > 4 || start > stop || ((start ^ stop) >> 24) || 376 (card_start >> 26) || mem->speed > 1000) 377 return -EINVAL; 378 379 enable = I365_ENA_MEM(map); 380 addr = exca_readb(socket, I365_ADDRWIN); 381 if (addr & enable) { 382 addr &= ~enable; 383 exca_writeb(socket, I365_ADDRWIN, addr); 384 } 385 386 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24); 387 388 word = (start >> 12) & 0x0fff; 389 if (mem->flags & MAP_16BIT) 390 word |= I365_MEM_16BIT; 391 if (mem->flags & MAP_0WS) 392 word |= I365_MEM_0WS; 393 exca_writew(socket, I365_MEM(map) + I365_W_START, word); 394 395 word = (stop >> 12) & 0x0fff; 396 switch (to_cycles(mem->speed)) { 397 case 0: break; 398 case 1: word |= I365_MEM_WS0; break; 399 case 2: word |= I365_MEM_WS1; break; 400 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break; 401 } 402 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word); 403 404 word = ((card_start - start) >> 12) & 0x3fff; 405 if (mem->flags & MAP_WRPROT) 406 word |= I365_MEM_WRPROT; 407 if (mem->flags & MAP_ATTRIB) 408 word |= I365_MEM_REG; 409 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word); 410 411 if (mem->flags & MAP_ACTIVE) 412 exca_writeb(socket, I365_ADDRWIN, addr | enable); 413 return 0; 414 } 415 416 417 418 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) 419 { 420 unsigned int events; 421 struct yenta_socket *socket = (struct yenta_socket *) dev_id; 422 u8 csc; 423 u32 cb_event; 424 425 /* Clear interrupt status for the event */ 426 cb_event = cb_readl(socket, CB_SOCKET_EVENT); 427 cb_writel(socket, CB_SOCKET_EVENT, cb_event); 428 429 csc = exca_readb(socket, I365_CSC); 430 431 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; 432 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; 433 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { 434 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; 435 } else { 436 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0; 437 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; 438 events |= (csc & I365_CSC_READY) ? SS_READY : 0; 439 } 440 441 if (events) 442 pcmcia_parse_events(&socket->socket, events); 443 444 if (cb_event || csc) 445 return IRQ_HANDLED; 446 447 return IRQ_NONE; 448 } 449 450 static void yenta_interrupt_wrapper(unsigned long data) 451 { 452 struct yenta_socket *socket = (struct yenta_socket *) data; 453 454 yenta_interrupt(0, (void *)socket, NULL); 455 socket->poll_timer.expires = jiffies + HZ; 456 add_timer(&socket->poll_timer); 457 } 458 459 static void yenta_clear_maps(struct yenta_socket *socket) 460 { 461 int i; 462 struct resource res = { .start = 0, .end = 0x0fff }; 463 pccard_io_map io = { 0, 0, 0, 0, 1 }; 464 pccard_mem_map mem = { .res = &res, }; 465 466 yenta_set_socket(&socket->socket, &dead_socket); 467 for (i = 0; i < 2; i++) { 468 io.map = i; 469 yenta_set_io_map(&socket->socket, &io); 470 } 471 for (i = 0; i < 5; i++) { 472 mem.map = i; 473 yenta_set_mem_map(&socket->socket, &mem); 474 } 475 } 476 477 /* redoes voltage interrogation if required */ 478 static void yenta_interrogate(struct yenta_socket *socket) 479 { 480 u32 state; 481 482 state = cb_readl(socket, CB_SOCKET_STATE); 483 if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) || 484 (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) || 485 ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD))) 486 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); 487 } 488 489 /* Called at resume and initialization events */ 490 static int yenta_sock_init(struct pcmcia_socket *sock) 491 { 492 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 493 u16 bridge; 494 495 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR; 496 if (!socket->cb_irq) 497 bridge |= CB_BRIDGE_INTR; 498 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 499 500 exca_writeb(socket, I365_GBLCTL, 0x00); 501 exca_writeb(socket, I365_GENCTL, 0x00); 502 503 /* Redo card voltage interrogation */ 504 yenta_interrogate(socket); 505 506 yenta_clear_maps(socket); 507 508 if (socket->type && socket->type->sock_init) 509 socket->type->sock_init(socket); 510 511 /* Re-enable CSC interrupts */ 512 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); 513 514 return 0; 515 } 516 517 static int yenta_sock_suspend(struct pcmcia_socket *sock) 518 { 519 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); 520 521 /* Disable CSC interrupts */ 522 cb_writel(socket, CB_SOCKET_MASK, 0x0); 523 524 return 0; 525 } 526 527 /* 528 * Use an adaptive allocation for the memory resource, 529 * sometimes the memory behind pci bridges is limited: 530 * 1/8 of the size of the io window of the parent. 531 * max 4 MB, min 16 kB. 532 */ 533 #define BRIDGE_MEM_MAX 4*1024*1024 534 #define BRIDGE_MEM_MIN 16*1024 535 536 #define BRIDGE_IO_MAX 256 537 #define BRIDGE_IO_MIN 32 538 539 #ifndef PCIBIOS_MIN_CARDBUS_IO 540 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO 541 #endif 542 543 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type) 544 { 545 struct pci_bus *bus; 546 struct resource *root, *res; 547 u32 start, end; 548 u32 align, size, min; 549 unsigned offset; 550 unsigned mask; 551 552 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; 553 /* Already allocated? */ 554 if (res->parent) 555 return 0; 556 557 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ 558 mask = ~0xfff; 559 if (type & IORESOURCE_IO) 560 mask = ~3; 561 562 offset = 0x1c + 8*nr; 563 bus = socket->dev->subordinate; 564 res->name = bus->name; 565 res->flags = type; 566 res->start = 0; 567 res->end = 0; 568 root = pci_find_parent_resource(socket->dev, res); 569 570 if (!root) 571 return; 572 573 start = config_readl(socket, offset) & mask; 574 end = config_readl(socket, offset+4) | ~mask; 575 if (start && end > start && !override_bios) { 576 res->start = start; 577 res->end = end; 578 if (request_resource(root, res) == 0) 579 return; 580 printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n", 581 pci_name(socket->dev), nr); 582 res->start = res->end = 0; 583 } 584 585 if (type & IORESOURCE_IO) { 586 align = 1024; 587 size = BRIDGE_IO_MAX; 588 min = BRIDGE_IO_MIN; 589 start = PCIBIOS_MIN_CARDBUS_IO; 590 end = ~0U; 591 } else { 592 unsigned long avail = root->end - root->start; 593 int i; 594 size = BRIDGE_MEM_MAX; 595 if (size > avail/8) { 596 size=(avail+1)/8; 597 /* round size down to next power of 2 */ 598 i = 0; 599 while ((size /= 2) != 0) 600 i++; 601 size = 1 << i; 602 } 603 if (size < BRIDGE_MEM_MIN) 604 size = BRIDGE_MEM_MIN; 605 min = BRIDGE_MEM_MIN; 606 align = size; 607 start = PCIBIOS_MIN_MEM; 608 end = ~0U; 609 } 610 611 do { 612 if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) { 613 config_writel(socket, offset, res->start); 614 config_writel(socket, offset+4, res->end); 615 return; 616 } 617 size = size/2; 618 align = size; 619 } while (size >= min); 620 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n", 621 pci_name(socket->dev), type); 622 res->start = res->end = 0; 623 } 624 625 /* 626 * Allocate the bridge mappings for the device.. 627 */ 628 static void yenta_allocate_resources(struct yenta_socket *socket) 629 { 630 yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH); 631 yenta_allocate_res(socket, 1, IORESOURCE_MEM); 632 yenta_allocate_res(socket, 2, IORESOURCE_IO); 633 yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */ 634 } 635 636 637 /* 638 * Free the bridge mappings for the device.. 639 */ 640 static void yenta_free_resources(struct yenta_socket *socket) 641 { 642 int i; 643 for (i=0;i<4;i++) { 644 struct resource *res; 645 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i; 646 if (res->start != 0 && res->end != 0) 647 release_resource(res); 648 res->start = res->end = 0; 649 } 650 } 651 652 653 /* 654 * Close it down - release our resources and go home.. 655 */ 656 static void yenta_close(struct pci_dev *dev) 657 { 658 struct yenta_socket *sock = pci_get_drvdata(dev); 659 660 /* we don't want a dying socket registered */ 661 pcmcia_unregister_socket(&sock->socket); 662 663 /* Disable all events so we don't die in an IRQ storm */ 664 cb_writel(sock, CB_SOCKET_MASK, 0x0); 665 exca_writeb(sock, I365_CSCINT, 0); 666 667 if (sock->cb_irq) 668 free_irq(sock->cb_irq, sock); 669 else 670 del_timer_sync(&sock->poll_timer); 671 672 if (sock->base) 673 iounmap(sock->base); 674 yenta_free_resources(sock); 675 676 pci_release_regions(dev); 677 pci_disable_device(dev); 678 pci_set_drvdata(dev, NULL); 679 } 680 681 682 static struct pccard_operations yenta_socket_operations = { 683 .init = yenta_sock_init, 684 .suspend = yenta_sock_suspend, 685 .get_status = yenta_get_status, 686 .get_socket = yenta_get_socket, 687 .set_socket = yenta_set_socket, 688 .set_io_map = yenta_set_io_map, 689 .set_mem_map = yenta_set_mem_map, 690 }; 691 692 693 #include "ti113x.h" 694 #include "ricoh.h" 695 #include "topic.h" 696 #include "o2micro.h" 697 698 enum { 699 CARDBUS_TYPE_DEFAULT = -1, 700 CARDBUS_TYPE_TI, 701 CARDBUS_TYPE_TI113X, 702 CARDBUS_TYPE_TI12XX, 703 CARDBUS_TYPE_TI1250, 704 CARDBUS_TYPE_RICOH, 705 CARDBUS_TYPE_TOPIC97, 706 CARDBUS_TYPE_O2MICRO, 707 }; 708 709 /* 710 * Different cardbus controllers have slightly different 711 * initialization sequences etc details. List them here.. 712 */ 713 static struct cardbus_type cardbus_type[] = { 714 [CARDBUS_TYPE_TI] = { 715 .override = ti_override, 716 .save_state = ti_save_state, 717 .restore_state = ti_restore_state, 718 .sock_init = ti_init, 719 }, 720 [CARDBUS_TYPE_TI113X] = { 721 .override = ti113x_override, 722 .save_state = ti_save_state, 723 .restore_state = ti_restore_state, 724 .sock_init = ti_init, 725 }, 726 [CARDBUS_TYPE_TI12XX] = { 727 .override = ti12xx_override, 728 .save_state = ti_save_state, 729 .restore_state = ti_restore_state, 730 .sock_init = ti_init, 731 }, 732 [CARDBUS_TYPE_TI1250] = { 733 .override = ti1250_override, 734 .save_state = ti_save_state, 735 .restore_state = ti_restore_state, 736 .sock_init = ti_init, 737 }, 738 [CARDBUS_TYPE_RICOH] = { 739 .override = ricoh_override, 740 .save_state = ricoh_save_state, 741 .restore_state = ricoh_restore_state, 742 }, 743 [CARDBUS_TYPE_TOPIC97] = { 744 .override = topic97_override, 745 }, 746 [CARDBUS_TYPE_O2MICRO] = { 747 .override = o2micro_override, 748 .restore_state = o2micro_restore_state, 749 }, 750 }; 751 752 753 /* 754 * Only probe "regular" interrupts, don't 755 * touch dangerous spots like the mouse irq, 756 * because there are mice that apparently 757 * get really confused if they get fondled 758 * too intimately. 759 * 760 * Default to 11, 10, 9, 7, 6, 5, 4, 3. 761 */ 762 static u32 isa_interrupts = 0x0ef8; 763 764 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask) 765 { 766 int i; 767 unsigned long val; 768 u16 bridge_ctrl; 769 u32 mask; 770 771 /* Set up ISA irq routing to probe the ISA irqs.. */ 772 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); 773 if (!(bridge_ctrl & CB_BRIDGE_INTR)) { 774 bridge_ctrl |= CB_BRIDGE_INTR; 775 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 776 } 777 778 /* 779 * Probe for usable interrupts using the force 780 * register to generate bogus card status events. 781 */ 782 cb_writel(socket, CB_SOCKET_EVENT, -1); 783 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); 784 exca_writeb(socket, I365_CSCINT, 0); 785 val = probe_irq_on() & isa_irq_mask; 786 for (i = 1; i < 16; i++) { 787 if (!((val >> i) & 1)) 788 continue; 789 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4)); 790 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); 791 udelay(100); 792 cb_writel(socket, CB_SOCKET_EVENT, -1); 793 } 794 cb_writel(socket, CB_SOCKET_MASK, 0); 795 exca_writeb(socket, I365_CSCINT, 0); 796 797 mask = probe_irq_mask(val) & 0xffff; 798 799 bridge_ctrl &= ~CB_BRIDGE_INTR; 800 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 801 802 return mask; 803 } 804 805 806 /* interrupt handler, only used during probing */ 807 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs) 808 { 809 struct yenta_socket *socket = (struct yenta_socket *) dev_id; 810 u8 csc; 811 u32 cb_event; 812 813 /* Clear interrupt status for the event */ 814 cb_event = cb_readl(socket, CB_SOCKET_EVENT); 815 cb_writel(socket, CB_SOCKET_EVENT, -1); 816 csc = exca_readb(socket, I365_CSC); 817 818 if (cb_event || csc) { 819 socket->probe_status = 1; 820 return IRQ_HANDLED; 821 } 822 823 return IRQ_NONE; 824 } 825 826 /* probes the PCI interrupt, use only on override functions */ 827 static int yenta_probe_cb_irq(struct yenta_socket *socket) 828 { 829 u16 bridge_ctrl; 830 831 if (!socket->cb_irq) 832 return -1; 833 834 socket->probe_status = 0; 835 836 /* disable ISA interrupts */ 837 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); 838 bridge_ctrl &= ~CB_BRIDGE_INTR; 839 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); 840 841 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) { 842 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n"); 843 return -1; 844 } 845 846 /* generate interrupt, wait */ 847 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG); 848 cb_writel(socket, CB_SOCKET_EVENT, -1); 849 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); 850 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); 851 852 msleep(100); 853 854 /* disable interrupts */ 855 cb_writel(socket, CB_SOCKET_MASK, 0); 856 exca_writeb(socket, I365_CSCINT, 0); 857 cb_writel(socket, CB_SOCKET_EVENT, -1); 858 exca_readb(socket, I365_CSC); 859 860 free_irq(socket->cb_irq, socket); 861 862 return (int) socket->probe_status; 863 } 864 865 866 867 /* 868 * Set static data that doesn't need re-initializing.. 869 */ 870 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask) 871 { 872 socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS; 873 socket->socket.map_size = 0x1000; 874 socket->socket.pci_irq = socket->cb_irq; 875 if (isa_probe) 876 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); 877 else 878 socket->socket.irq_mask = 0; 879 socket->socket.cb_dev = socket->dev; 880 881 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n", 882 socket->socket.irq_mask, socket->cb_irq); 883 } 884 885 /* 886 * Initialize the standard cardbus registers 887 */ 888 static void yenta_config_init(struct yenta_socket *socket) 889 { 890 u16 bridge; 891 struct pci_dev *dev = socket->dev; 892 893 pci_set_power_state(socket->dev, 0); 894 895 config_writel(socket, CB_LEGACY_MODE_BASE, 0); 896 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start); 897 config_writew(socket, PCI_COMMAND, 898 PCI_COMMAND_IO | 899 PCI_COMMAND_MEMORY | 900 PCI_COMMAND_MASTER | 901 PCI_COMMAND_WAIT); 902 903 /* MAGIC NUMBERS! Fixme */ 904 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4); 905 config_writeb(socket, PCI_LATENCY_TIMER, 168); 906 config_writel(socket, PCI_PRIMARY_BUS, 907 (176 << 24) | /* sec. latency timer */ 908 (dev->subordinate->subordinate << 16) | /* subordinate bus */ 909 (dev->subordinate->secondary << 8) | /* secondary bus */ 910 dev->subordinate->primary); /* primary bus */ 911 912 /* 913 * Set up the bridging state: 914 * - enable write posting. 915 * - memory window 0 prefetchable, window 1 non-prefetchable 916 * - PCI interrupts enabled if a PCI interrupt exists.. 917 */ 918 bridge = config_readw(socket, CB_BRIDGE_CONTROL); 919 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); 920 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR; 921 config_writew(socket, CB_BRIDGE_CONTROL, bridge); 922 } 923 924 /* 925 * Initialize a cardbus controller. Make sure we have a usable 926 * interrupt, and that we can map the cardbus area. Fill in the 927 * socket information structure.. 928 */ 929 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id) 930 { 931 struct yenta_socket *socket; 932 int ret; 933 934 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL); 935 if (!socket) 936 return -ENOMEM; 937 memset(socket, 0, sizeof(*socket)); 938 939 /* prepare pcmcia_socket */ 940 socket->socket.ops = ¥ta_socket_operations; 941 socket->socket.resource_ops = &pccard_nonstatic_ops; 942 socket->socket.dev.dev = &dev->dev; 943 socket->socket.driver_data = socket; 944 socket->socket.owner = THIS_MODULE; 945 946 /* prepare struct yenta_socket */ 947 socket->dev = dev; 948 pci_set_drvdata(dev, socket); 949 950 /* 951 * Do some basic sanity checking.. 952 */ 953 if (pci_enable_device(dev)) { 954 ret = -EBUSY; 955 goto free; 956 } 957 958 ret = pci_request_regions(dev, "yenta_socket"); 959 if (ret) 960 goto disable; 961 962 if (!pci_resource_start(dev, 0)) { 963 printk(KERN_ERR "No cardbus resource!\n"); 964 ret = -ENODEV; 965 goto release; 966 } 967 968 /* 969 * Ok, start setup.. Map the cardbus registers, 970 * and request the IRQ. 971 */ 972 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000); 973 if (!socket->base) { 974 ret = -ENOMEM; 975 goto release; 976 } 977 978 /* 979 * report the subsystem vendor and device for help debugging 980 * the irq stuff... 981 */ 982 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n", 983 pci_name(dev), dev->subsystem_vendor, dev->subsystem_device); 984 985 yenta_config_init(socket); 986 987 /* Disable all events */ 988 cb_writel(socket, CB_SOCKET_MASK, 0x0); 989 990 /* Set up the bridge regions.. */ 991 yenta_allocate_resources(socket); 992 993 socket->cb_irq = dev->irq; 994 995 /* Do we have special options for the device? */ 996 if (id->driver_data != CARDBUS_TYPE_DEFAULT && 997 id->driver_data < ARRAY_SIZE(cardbus_type)) { 998 socket->type = &cardbus_type[id->driver_data]; 999 1000 ret = socket->type->override(socket); 1001 if (ret < 0) 1002 goto unmap; 1003 } 1004 1005 /* We must finish initialization here */ 1006 1007 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) { 1008 /* No IRQ or request_irq failed. Poll */ 1009 socket->cb_irq = 0; /* But zero is a valid IRQ number. */ 1010 init_timer(&socket->poll_timer); 1011 socket->poll_timer.function = yenta_interrupt_wrapper; 1012 socket->poll_timer.data = (unsigned long)socket; 1013 socket->poll_timer.expires = jiffies + HZ; 1014 add_timer(&socket->poll_timer); 1015 } 1016 1017 /* Figure out what the dang thing can do for the PCMCIA layer... */ 1018 yenta_interrogate(socket); 1019 yenta_get_socket_capabilities(socket, isa_interrupts); 1020 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE)); 1021 1022 /* Register it with the pcmcia layer.. */ 1023 ret = pcmcia_register_socket(&socket->socket); 1024 if (ret == 0) 1025 goto out; 1026 1027 unmap: 1028 iounmap(socket->base); 1029 release: 1030 pci_release_regions(dev); 1031 disable: 1032 pci_disable_device(dev); 1033 free: 1034 kfree(socket); 1035 out: 1036 return ret; 1037 } 1038 1039 1040 static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state) 1041 { 1042 struct yenta_socket *socket = pci_get_drvdata(dev); 1043 int ret; 1044 1045 ret = pcmcia_socket_dev_suspend(&dev->dev, state); 1046 1047 if (socket) { 1048 if (socket->type && socket->type->save_state) 1049 socket->type->save_state(socket); 1050 1051 /* FIXME: pci_save_state needs to have a better interface */ 1052 pci_save_state(dev); 1053 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]); 1054 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]); 1055 1056 /* 1057 * Some laptops (IBM T22) do not like us putting the Cardbus 1058 * bridge into D3. At a guess, some other laptop will 1059 * probably require this, so leave it commented out for now. 1060 */ 1061 /* pci_set_power_state(dev, 3); */ 1062 } 1063 1064 return ret; 1065 } 1066 1067 1068 static int yenta_dev_resume (struct pci_dev *dev) 1069 { 1070 struct yenta_socket *socket = pci_get_drvdata(dev); 1071 1072 if (socket) { 1073 pci_set_power_state(dev, 0); 1074 /* FIXME: pci_restore_state needs to have a better interface */ 1075 pci_restore_state(dev); 1076 pci_write_config_dword(dev, 16*4, socket->saved_state[0]); 1077 pci_write_config_dword(dev, 17*4, socket->saved_state[1]); 1078 1079 if (socket->type && socket->type->restore_state) 1080 socket->type->restore_state(socket); 1081 } 1082 1083 return pcmcia_socket_dev_resume(&dev->dev); 1084 } 1085 1086 1087 #define CB_ID(vend,dev,type) \ 1088 { \ 1089 .vendor = vend, \ 1090 .device = dev, \ 1091 .subvendor = PCI_ANY_ID, \ 1092 .subdevice = PCI_ANY_ID, \ 1093 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \ 1094 .class_mask = ~0, \ 1095 .driver_data = CARDBUS_TYPE_##type, \ 1096 } 1097 1098 static struct pci_device_id yenta_table [] = { 1099 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI), 1100 1101 /* 1102 * TBD: Check if these TI variants can use more 1103 * advanced overrides instead. (I can't get the 1104 * data sheets for these devices. --rmk) 1105 */ 1106 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI), 1107 1108 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X), 1109 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X), 1110 1111 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX), 1112 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX), 1113 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX), 1114 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX), 1115 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX), 1116 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX), 1117 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX), 1118 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX), 1119 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX), 1120 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX), 1121 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX), 1122 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX), 1123 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX), 1124 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX), 1125 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX), 1126 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX), 1127 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX), 1128 1129 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250), 1130 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250), 1131 1132 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX), 1133 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX), 1134 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250), 1135 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX), 1136 1137 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH), 1138 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH), 1139 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH), 1140 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH), 1141 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH), 1142 1143 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97), 1144 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97), 1145 1146 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO), 1147 1148 /* match any cardbus bridge */ 1149 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT), 1150 { /* all zeroes */ } 1151 }; 1152 MODULE_DEVICE_TABLE(pci, yenta_table); 1153 1154 1155 static struct pci_driver yenta_cardbus_driver = { 1156 .name = "yenta_cardbus", 1157 .id_table = yenta_table, 1158 .probe = yenta_probe, 1159 .remove = __devexit_p(yenta_close), 1160 .suspend = yenta_dev_suspend, 1161 .resume = yenta_dev_resume, 1162 }; 1163 1164 1165 static int __init yenta_socket_init(void) 1166 { 1167 return pci_register_driver (¥ta_cardbus_driver); 1168 } 1169 1170 1171 static void __exit yenta_socket_exit (void) 1172 { 1173 pci_unregister_driver (¥ta_cardbus_driver); 1174 } 1175 1176 1177 module_init(yenta_socket_init); 1178 module_exit(yenta_socket_exit); 1179 1180 MODULE_LICENSE("GPL"); 1181