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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / pcmcia / yenta_socket.c
blob849c0c11d2af84797ca686d6cf3f85cf3ba5de89
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/workqueue.h>
16 #include <linux/interrupt.h>
17 #include <linux/delay.h>
18 #include <linux/module.h>
19 #include <linux/io.h>
20 #include <linux/slab.h>
21
22 #include <pcmcia/ss.h>
23
24 #include "yenta_socket.h"
25 #include "i82365.h"
26
27 static bool disable_clkrun;
28 module_param(disable_clkrun, bool, 0444);
29 MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
30
31 static bool isa_probe = 1;
32 module_param(isa_probe, bool, 0444);
33 MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
34
35 static bool pwr_irqs_off;
36 module_param(pwr_irqs_off, bool, 0644);
37 MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
38
39 static char o2_speedup[] = "default";
40 module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
41 MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
42 "or 'default' (uses recommended behaviour for the detected bridge)");
43
44 /*
45 * Only probe "regular" interrupts, don't
46 * touch dangerous spots like the mouse irq,
47 * because there are mice that apparently
48 * get really confused if they get fondled
49 * too intimately.
50 *
51 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
52 */
53 static u32 isa_interrupts = 0x0ef8;
54
55
56 #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
57
58 /* Don't ask.. */
59 #define to_cycles(ns) ((ns)/120)
60 #define to_ns(cycles) ((cycles)*120)
61
62 /*
63 * yenta PCI irq probing.
64 * currently only used in the TI/EnE initialization code
65 */
66 #ifdef CONFIG_YENTA_TI
67 static int yenta_probe_cb_irq(struct yenta_socket *socket);
68 static unsigned int yenta_probe_irq(struct yenta_socket *socket,
69 u32 isa_irq_mask);
70 #endif
71
72
73 static unsigned int override_bios;
74 module_param(override_bios, uint, 0000);
75 MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
76
77 /*
78 * Generate easy-to-use ways of reading a cardbus sockets
79 * regular memory space ("cb_xxx"), configuration space
80 * ("config_xxx") and compatibility space ("exca_xxxx")
81 */
82 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
83 {
84 u32 val = readl(socket->base + reg);
85 debug("%04x %08x\n", socket, reg, val);
86 return val;
87 }
88
89 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
90 {
91 debug("%04x %08x\n", socket, reg, val);
92 writel(val, socket->base + reg);
93 readl(socket->base + reg); /* avoid problems with PCI write posting */
94 }
95
96 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
97 {
98 u8 val;
99 pci_read_config_byte(socket->dev, offset, &val);
100 debug("%04x %02x\n", socket, offset, val);
101 return val;
102 }
103
104 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
105 {
106 u16 val;
107 pci_read_config_word(socket->dev, offset, &val);
108 debug("%04x %04x\n", socket, offset, val);
109 return val;
110 }
111
112 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
113 {
114 u32 val;
115 pci_read_config_dword(socket->dev, offset, &val);
116 debug("%04x %08x\n", socket, offset, val);
117 return val;
118 }
119
120 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
121 {
122 debug("%04x %02x\n", socket, offset, val);
123 pci_write_config_byte(socket->dev, offset, val);
124 }
125
126 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
127 {
128 debug("%04x %04x\n", socket, offset, val);
129 pci_write_config_word(socket->dev, offset, val);
130 }
131
132 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
133 {
134 debug("%04x %08x\n", socket, offset, val);
135 pci_write_config_dword(socket->dev, offset, val);
136 }
137
138 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
139 {
140 u8 val = readb(socket->base + 0x800 + reg);
141 debug("%04x %02x\n", socket, reg, val);
142 return val;
143 }
144
145 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
146 {
147 u16 val;
148 val = readb(socket->base + 0x800 + reg);
149 val |= readb(socket->base + 0x800 + reg + 1) << 8;
150 debug("%04x %04x\n", socket, reg, val);
151 return val;
152 }
153
154 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
155 {
156 debug("%04x %02x\n", socket, reg, val);
157 writeb(val, socket->base + 0x800 + reg);
158 readb(socket->base + 0x800 + reg); /* PCI write posting... */
159 }
160
161 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
162 {
163 debug("%04x %04x\n", socket, reg, val);
164 writeb(val, socket->base + 0x800 + reg);
165 writeb(val >> 8, socket->base + 0x800 + reg + 1);
166
167 /* PCI write posting... */
168 readb(socket->base + 0x800 + reg);
169 readb(socket->base + 0x800 + reg + 1);
170 }
171
172 static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
173 {
174 struct pci_dev *dev = to_pci_dev(yentadev);
175 struct yenta_socket *socket = pci_get_drvdata(dev);
176 int offset = 0, i;
177
178 offset = snprintf(buf, PAGE_SIZE, "CB registers:");
179 for (i = 0; i < 0x24; i += 4) {
180 unsigned val;
181 if (!(i & 15))
182 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
183 val = cb_readl(socket, i);
184 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
185 }
186
187 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
188 for (i = 0; i < 0x45; i++) {
189 unsigned char val;
190 if (!(i & 7)) {
191 if (i & 8) {
192 memcpy(buf + offset, " -", 2);
193 offset += 2;
194 } else
195 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
196 }
197 val = exca_readb(socket, i);
198 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
199 }
200 buf[offset++] = '\n';
201 return offset;
202 }
203
204 static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
205
206 /*
207 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
208 * on what kind of card is inserted..
209 */
210 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
211 {
212 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
213 unsigned int val;
214 u32 state = cb_readl(socket, CB_SOCKET_STATE);
215
216 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
217 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
218 val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
219 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
220
221
222 if (state & CB_CBCARD) {
223 val |= SS_CARDBUS;
224 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
225 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
226 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
227 } else if (state & CB_16BITCARD) {
228 u8 status = exca_readb(socket, I365_STATUS);
229 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
230 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
231 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
232 } else {
233 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
234 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
235 }
236 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
237 val |= (status & I365_CS_READY) ? SS_READY : 0;
238 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
239 }
240
241 *value = val;
242 return 0;
243 }
244
245 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
246 {
247 /* some birdges require to use the ExCA registers to power 16bit cards */
248 if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
249 (socket->flags & YENTA_16BIT_POWER_EXCA)) {
250 u8 reg, old;
251 reg = old = exca_readb(socket, I365_POWER);
252 reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
253
254 /* i82365SL-DF style */
255 if (socket->flags & YENTA_16BIT_POWER_DF) {
256 switch (state->Vcc) {
257 case 33:
258 reg |= I365_VCC_3V;
259 break;
260 case 50:
261 reg |= I365_VCC_5V;
262 break;
263 default:
264 reg = 0;
265 break;
266 }
267 switch (state->Vpp) {
268 case 33:
269 case 50:
270 reg |= I365_VPP1_5V;
271 break;
272 case 120:
273 reg |= I365_VPP1_12V;
274 break;
275 }
276 } else {
277 /* i82365SL-B style */
278 switch (state->Vcc) {
279 case 50:
280 reg |= I365_VCC_5V;
281 break;
282 default:
283 reg = 0;
284 break;
285 }
286 switch (state->Vpp) {
287 case 50:
288 reg |= I365_VPP1_5V | I365_VPP2_5V;
289 break;
290 case 120:
291 reg |= I365_VPP1_12V | I365_VPP2_12V;
292 break;
293 }
294 }
295
296 if (reg != old)
297 exca_writeb(socket, I365_POWER, reg);
298 } else {
299 u32 reg = 0; /* CB_SC_STPCLK? */
300 switch (state->Vcc) {
301 case 33:
302 reg = CB_SC_VCC_3V;
303 break;
304 case 50:
305 reg = CB_SC_VCC_5V;
306 break;
307 default:
308 reg = 0;
309 break;
310 }
311 switch (state->Vpp) {
312 case 33:
313 reg |= CB_SC_VPP_3V;
314 break;
315 case 50:
316 reg |= CB_SC_VPP_5V;
317 break;
318 case 120:
319 reg |= CB_SC_VPP_12V;
320 break;
321 }
322 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
323 cb_writel(socket, CB_SOCKET_CONTROL, reg);
324 }
325 }
326
327 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
328 {
329 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
330 u16 bridge;
331
332 /* if powering down: do it immediately */
333 if (state->Vcc == 0)
334 yenta_set_power(socket, state);
335
336 socket->io_irq = state->io_irq;
337 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
338 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
339 u8 intr;
340 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
341
342 /* ISA interrupt control? */
343 intr = exca_readb(socket, I365_INTCTL);
344 intr = (intr & ~0xf);
345 if (!socket->dev->irq) {
346 intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
347 bridge |= CB_BRIDGE_INTR;
348 }
349 exca_writeb(socket, I365_INTCTL, intr);
350 } else {
351 u8 reg;
352
353 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
354 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
355 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
356 if (state->io_irq != socket->dev->irq) {
357 reg |= state->io_irq;
358 bridge |= CB_BRIDGE_INTR;
359 }
360 exca_writeb(socket, I365_INTCTL, reg);
361
362 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
363 reg |= I365_PWR_NORESET;
364 if (state->flags & SS_PWR_AUTO)
365 reg |= I365_PWR_AUTO;
366 if (state->flags & SS_OUTPUT_ENA)
367 reg |= I365_PWR_OUT;
368 if (exca_readb(socket, I365_POWER) != reg)
369 exca_writeb(socket, I365_POWER, reg);
370
371 /* CSC interrupt: no ISA irq for CSC */
372 reg = exca_readb(socket, I365_CSCINT);
373 reg &= I365_CSC_IRQ_MASK;
374 reg |= I365_CSC_DETECT;
375 if (state->flags & SS_IOCARD) {
376 if (state->csc_mask & SS_STSCHG)
377 reg |= I365_CSC_STSCHG;
378 } else {
379 if (state->csc_mask & SS_BATDEAD)
380 reg |= I365_CSC_BVD1;
381 if (state->csc_mask & SS_BATWARN)
382 reg |= I365_CSC_BVD2;
383 if (state->csc_mask & SS_READY)
384 reg |= I365_CSC_READY;
385 }
386 exca_writeb(socket, I365_CSCINT, reg);
387 exca_readb(socket, I365_CSC);
388 if (sock->zoom_video)
389 sock->zoom_video(sock, state->flags & SS_ZVCARD);
390 }
391 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
392 /* Socket event mask: get card insert/remove events.. */
393 cb_writel(socket, CB_SOCKET_EVENT, -1);
394 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
395
396 /* if powering up: do it as the last step when the socket is configured */
397 if (state->Vcc != 0)
398 yenta_set_power(socket, state);
399 return 0;
400 }
401
402 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
403 {
404 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
405 int map;
406 unsigned char ioctl, addr, enable;
407
408 map = io->map;
409
410 if (map > 1)
411 return -EINVAL;
412
413 enable = I365_ENA_IO(map);
414 addr = exca_readb(socket, I365_ADDRWIN);
415
416 /* Disable the window before changing it.. */
417 if (addr & enable) {
418 addr &= ~enable;
419 exca_writeb(socket, I365_ADDRWIN, addr);
420 }
421
422 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
423 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
424
425 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
426 if (io->flags & MAP_0WS)
427 ioctl |= I365_IOCTL_0WS(map);
428 if (io->flags & MAP_16BIT)
429 ioctl |= I365_IOCTL_16BIT(map);
430 if (io->flags & MAP_AUTOSZ)
431 ioctl |= I365_IOCTL_IOCS16(map);
432 exca_writeb(socket, I365_IOCTL, ioctl);
433
434 if (io->flags & MAP_ACTIVE)
435 exca_writeb(socket, I365_ADDRWIN, addr | enable);
436 return 0;
437 }
438
439 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
440 {
441 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
442 struct pci_bus_region region;
443 int map;
444 unsigned char addr, enable;
445 unsigned int start, stop, card_start;
446 unsigned short word;
447
448 pcibios_resource_to_bus(socket->dev, &region, mem->res);
449
450 map = mem->map;
451 start = region.start;
452 stop = region.end;
453 card_start = mem->card_start;
454
455 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
456 (card_start >> 26) || mem->speed > 1000)
457 return -EINVAL;
458
459 enable = I365_ENA_MEM(map);
460 addr = exca_readb(socket, I365_ADDRWIN);
461 if (addr & enable) {
462 addr &= ~enable;
463 exca_writeb(socket, I365_ADDRWIN, addr);
464 }
465
466 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
467
468 word = (start >> 12) & 0x0fff;
469 if (mem->flags & MAP_16BIT)
470 word |= I365_MEM_16BIT;
471 if (mem->flags & MAP_0WS)
472 word |= I365_MEM_0WS;
473 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
474
475 word = (stop >> 12) & 0x0fff;
476 switch (to_cycles(mem->speed)) {
477 case 0:
478 break;
479 case 1:
480 word |= I365_MEM_WS0;
481 break;
482 case 2:
483 word |= I365_MEM_WS1;
484 break;
485 default:
486 word |= I365_MEM_WS1 | I365_MEM_WS0;
487 break;
488 }
489 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
490
491 word = ((card_start - start) >> 12) & 0x3fff;
492 if (mem->flags & MAP_WRPROT)
493 word |= I365_MEM_WRPROT;
494 if (mem->flags & MAP_ATTRIB)
495 word |= I365_MEM_REG;
496 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
497
498 if (mem->flags & MAP_ACTIVE)
499 exca_writeb(socket, I365_ADDRWIN, addr | enable);
500 return 0;
501 }
502
503
504
505 static irqreturn_t yenta_interrupt(int irq, void *dev_id)
506 {
507 unsigned int events;
508 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
509 u8 csc;
510 u32 cb_event;
511
512 /* Clear interrupt status for the event */
513 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
514 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
515
516 csc = exca_readb(socket, I365_CSC);
517
518 if (!(cb_event || csc))
519 return IRQ_NONE;
520
521 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
522 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
523 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
524 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
525 } else {
526 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
527 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
528 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
529 }
530
531 if (events)
532 pcmcia_parse_events(&socket->socket, events);
533
534 return IRQ_HANDLED;
535 }
536
537 static void yenta_interrupt_wrapper(unsigned long data)
538 {
539 struct yenta_socket *socket = (struct yenta_socket *) data;
540
541 yenta_interrupt(0, (void *)socket);
542 socket->poll_timer.expires = jiffies + HZ;
543 add_timer(&socket->poll_timer);
544 }
545
546 static void yenta_clear_maps(struct yenta_socket *socket)
547 {
548 int i;
549 struct resource res = { .start = 0, .end = 0x0fff };
550 pccard_io_map io = { 0, 0, 0, 0, 1 };
551 pccard_mem_map mem = { .res = &res, };
552
553 yenta_set_socket(&socket->socket, &dead_socket);
554 for (i = 0; i < 2; i++) {
555 io.map = i;
556 yenta_set_io_map(&socket->socket, &io);
557 }
558 for (i = 0; i < 5; i++) {
559 mem.map = i;
560 yenta_set_mem_map(&socket->socket, &mem);
561 }
562 }
563
564 /* redoes voltage interrogation if required */
565 static void yenta_interrogate(struct yenta_socket *socket)
566 {
567 u32 state;
568
569 state = cb_readl(socket, CB_SOCKET_STATE);
570 if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
571 (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
572 ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
573 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
574 }
575
576 /* Called at resume and initialization events */
577 static int yenta_sock_init(struct pcmcia_socket *sock)
578 {
579 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
580
581 exca_writeb(socket, I365_GBLCTL, 0x00);
582 exca_writeb(socket, I365_GENCTL, 0x00);
583
584 /* Redo card voltage interrogation */
585 yenta_interrogate(socket);
586
587 yenta_clear_maps(socket);
588
589 if (socket->type && socket->type->sock_init)
590 socket->type->sock_init(socket);
591
592 /* Re-enable CSC interrupts */
593 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
594
595 return 0;
596 }
597
598 static int yenta_sock_suspend(struct pcmcia_socket *sock)
599 {
600 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
601
602 /* Disable CSC interrupts */
603 cb_writel(socket, CB_SOCKET_MASK, 0x0);
604
605 return 0;
606 }
607
608 /*
609 * Use an adaptive allocation for the memory resource,
610 * sometimes the memory behind pci bridges is limited:
611 * 1/8 of the size of the io window of the parent.
612 * max 4 MB, min 16 kB. We try very hard to not get below
613 * the "ACC" values, though.
614 */
615 #define BRIDGE_MEM_MAX (4*1024*1024)
616 #define BRIDGE_MEM_ACC (128*1024)
617 #define BRIDGE_MEM_MIN (16*1024)
618
619 #define BRIDGE_IO_MAX 512
620 #define BRIDGE_IO_ACC 256
621 #define BRIDGE_IO_MIN 32
622
623 #ifndef PCIBIOS_MIN_CARDBUS_IO
624 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
625 #endif
626
627 static int yenta_search_one_res(struct resource *root, struct resource *res,
628 u32 min)
629 {
630 u32 align, size, start, end;
631
632 if (res->flags & IORESOURCE_IO) {
633 align = 1024;
634 size = BRIDGE_IO_MAX;
635 start = PCIBIOS_MIN_CARDBUS_IO;
636 end = ~0U;
637 } else {
638 unsigned long avail = root->end - root->start;
639 int i;
640 size = BRIDGE_MEM_MAX;
641 if (size > avail/8) {
642 size = (avail+1)/8;
643 /* round size down to next power of 2 */
644 i = 0;
645 while ((size /= 2) != 0)
646 i++;
647 size = 1 << i;
648 }
649 if (size < min)
650 size = min;
651 align = size;
652 start = PCIBIOS_MIN_MEM;
653 end = ~0U;
654 }
655
656 do {
657 if (allocate_resource(root, res, size, start, end, align,
658 NULL, NULL) == 0) {
659 return 1;
660 }
661 size = size/2;
662 align = size;
663 } while (size >= min);
664
665 return 0;
666 }
667
668
669 static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
670 u32 min)
671 {
672 struct resource *root;
673 int i;
674
675 pci_bus_for_each_resource(socket->dev->bus, root, i) {
676 if (!root)
677 continue;
678
679 if ((res->flags ^ root->flags) &
680 (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
681 continue; /* Wrong type */
682
683 if (yenta_search_one_res(root, res, min))
684 return 1;
685 }
686 return 0;
687 }
688
689 static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
690 {
691 struct pci_dev *dev = socket->dev;
692 struct resource *res;
693 struct pci_bus_region region;
694 unsigned mask;
695
696 res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
697 /* Already allocated? */
698 if (res->parent)
699 return 0;
700
701 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
702 mask = ~0xfff;
703 if (type & IORESOURCE_IO)
704 mask = ~3;
705
706 res->name = dev->subordinate->name;
707 res->flags = type;
708
709 region.start = config_readl(socket, addr_start) & mask;
710 region.end = config_readl(socket, addr_end) | ~mask;
711 if (region.start && region.end > region.start && !override_bios) {
712 pcibios_bus_to_resource(dev, res, &region);
713 if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
714 return 0;
715 dev_printk(KERN_INFO, &dev->dev,
716 "Preassigned resource %d busy or not available, "
717 "reconfiguring...\n",
718 nr);
719 }
720
721 if (type & IORESOURCE_IO) {
722 if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
723 (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
724 (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
725 return 1;
726 } else {
727 if (type & IORESOURCE_PREFETCH) {
728 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
729 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
730 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
731 return 1;
732 /* Approximating prefetchable by non-prefetchable */
733 res->flags = IORESOURCE_MEM;
734 }
735 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
736 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
737 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
738 return 1;
739 }
740
741 dev_printk(KERN_INFO, &dev->dev,
742 "no resource of type %x available, trying to continue...\n",
743 type);
744 res->start = res->end = res->flags = 0;
745 return 0;
746 }
747
748 /*
749 * Allocate the bridge mappings for the device..
750 */
751 static void yenta_allocate_resources(struct yenta_socket *socket)
752 {
753 int program = 0;
754 program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
755 PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
756 program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
757 PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
758 program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
759 PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
760 program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
761 PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
762 if (program)
763 pci_setup_cardbus(socket->dev->subordinate);
764 }
765
766
767 /*
768 * Free the bridge mappings for the device..
769 */
770 static void yenta_free_resources(struct yenta_socket *socket)
771 {
772 int i;
773 for (i = 0; i < 4; i++) {
774 struct resource *res;
775 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
776 if (res->start != 0 && res->end != 0)
777 release_resource(res);
778 res->start = res->end = res->flags = 0;
779 }
780 }
781
782
783 /*
784 * Close it down - release our resources and go home..
785 */
786 static void __devexit yenta_close(struct pci_dev *dev)
787 {
788 struct yenta_socket *sock = pci_get_drvdata(dev);
789
790 /* Remove the register attributes */
791 device_remove_file(&dev->dev, &dev_attr_yenta_registers);
792
793 /* we don't want a dying socket registered */
794 pcmcia_unregister_socket(&sock->socket);
795
796 /* Disable all events so we don't die in an IRQ storm */
797 cb_writel(sock, CB_SOCKET_MASK, 0x0);
798 exca_writeb(sock, I365_CSCINT, 0);
799
800 if (sock->cb_irq)
801 free_irq(sock->cb_irq, sock);
802 else
803 del_timer_sync(&sock->poll_timer);
804
805 if (sock->base)
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 }
813
814
815 static struct pccard_operations yenta_socket_operations = {
816 .init = yenta_sock_init,
817 .suspend = yenta_sock_suspend,
818 .get_status = yenta_get_status,
819 .set_socket = yenta_set_socket,
820 .set_io_map = yenta_set_io_map,
821 .set_mem_map = yenta_set_mem_map,
822 };
823
824
825 #ifdef CONFIG_YENTA_TI
826 #include "ti113x.h"
827 #endif
828 #ifdef CONFIG_YENTA_RICOH
829 #include "ricoh.h"
830 #endif
831 #ifdef CONFIG_YENTA_TOSHIBA
832 #include "topic.h"
833 #endif
834 #ifdef CONFIG_YENTA_O2
835 #include "o2micro.h"
836 #endif
837
838 enum {
839 CARDBUS_TYPE_DEFAULT = -1,
840 CARDBUS_TYPE_TI,
841 CARDBUS_TYPE_TI113X,
842 CARDBUS_TYPE_TI12XX,
843 CARDBUS_TYPE_TI1250,
844 CARDBUS_TYPE_RICOH,
845 CARDBUS_TYPE_TOPIC95,
846 CARDBUS_TYPE_TOPIC97,
847 CARDBUS_TYPE_O2MICRO,
848 CARDBUS_TYPE_ENE,
849 };
850
851 /*
852 * Different cardbus controllers have slightly different
853 * initialization sequences etc details. List them here..
854 */
855 static struct cardbus_type cardbus_type[] = {
856 #ifdef CONFIG_YENTA_TI
857 [CARDBUS_TYPE_TI] = {
858 .override = ti_override,
859 .save_state = ti_save_state,
860 .restore_state = ti_restore_state,
861 .sock_init = ti_init,
862 },
863 [CARDBUS_TYPE_TI113X] = {
864 .override = ti113x_override,
865 .save_state = ti_save_state,
866 .restore_state = ti_restore_state,
867 .sock_init = ti_init,
868 },
869 [CARDBUS_TYPE_TI12XX] = {
870 .override = ti12xx_override,
871 .save_state = ti_save_state,
872 .restore_state = ti_restore_state,
873 .sock_init = ti_init,
874 },
875 [CARDBUS_TYPE_TI1250] = {
876 .override = ti1250_override,
877 .save_state = ti_save_state,
878 .restore_state = ti_restore_state,
879 .sock_init = ti_init,
880 },
881 [CARDBUS_TYPE_ENE] = {
882 .override = ene_override,
883 .save_state = ti_save_state,
884 .restore_state = ti_restore_state,
885 .sock_init = ti_init,
886 },
887 #endif
888 #ifdef CONFIG_YENTA_RICOH
889 [CARDBUS_TYPE_RICOH] = {
890 .override = ricoh_override,
891 .save_state = ricoh_save_state,
892 .restore_state = ricoh_restore_state,
893 },
894 #endif
895 #ifdef CONFIG_YENTA_TOSHIBA
896 [CARDBUS_TYPE_TOPIC95] = {
897 .override = topic95_override,
898 },
899 [CARDBUS_TYPE_TOPIC97] = {
900 .override = topic97_override,
901 },
902 #endif
903 #ifdef CONFIG_YENTA_O2
904 [CARDBUS_TYPE_O2MICRO] = {
905 .override = o2micro_override,
906 .restore_state = o2micro_restore_state,
907 },
908 #endif
909 };
910
911
912 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
913 {
914 int i;
915 unsigned long val;
916 u32 mask;
917 u8 reg;
918
919 /*
920 * Probe for usable interrupts using the force
921 * register to generate bogus card status events.
922 */
923 cb_writel(socket, CB_SOCKET_EVENT, -1);
924 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
925 reg = exca_readb(socket, I365_CSCINT);
926 exca_writeb(socket, I365_CSCINT, 0);
927 val = probe_irq_on() & isa_irq_mask;
928 for (i = 1; i < 16; i++) {
929 if (!((val >> i) & 1))
930 continue;
931 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
932 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
933 udelay(100);
934 cb_writel(socket, CB_SOCKET_EVENT, -1);
935 }
936 cb_writel(socket, CB_SOCKET_MASK, 0);
937 exca_writeb(socket, I365_CSCINT, reg);
938
939 mask = probe_irq_mask(val) & 0xffff;
940
941 return mask;
942 }
943
944
945 /*
946 * yenta PCI irq probing.
947 * currently only used in the TI/EnE initialization code
948 */
949 #ifdef CONFIG_YENTA_TI
950
951 /* interrupt handler, only used during probing */
952 static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
953 {
954 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
955 u8 csc;
956 u32 cb_event;
957
958 /* Clear interrupt status for the event */
959 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
960 cb_writel(socket, CB_SOCKET_EVENT, -1);
961 csc = exca_readb(socket, I365_CSC);
962
963 if (cb_event || csc) {
964 socket->probe_status = 1;
965 return IRQ_HANDLED;
966 }
967
968 return IRQ_NONE;
969 }
970
971 /* probes the PCI interrupt, use only on override functions */
972 static int yenta_probe_cb_irq(struct yenta_socket *socket)
973 {
974 u8 reg = 0;
975
976 if (!socket->cb_irq)
977 return -1;
978
979 socket->probe_status = 0;
980
981 if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
982 dev_printk(KERN_WARNING, &socket->dev->dev,
983 "request_irq() in yenta_probe_cb_irq() failed!\n");
984 return -1;
985 }
986
987 /* generate interrupt, wait */
988 if (!socket->dev->irq)
989 reg = exca_readb(socket, I365_CSCINT);
990 exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
991 cb_writel(socket, CB_SOCKET_EVENT, -1);
992 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
993 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
994
995 msleep(100);
996
997 /* disable interrupts */
998 cb_writel(socket, CB_SOCKET_MASK, 0);
999 exca_writeb(socket, I365_CSCINT, reg);
1000 cb_writel(socket, CB_SOCKET_EVENT, -1);
1001 exca_readb(socket, I365_CSC);
1002
1003 free_irq(socket->cb_irq, socket);
1004
1005 return (int) socket->probe_status;
1006 }
1007
1008 #endif /* CONFIG_YENTA_TI */
1009
1010
1011 /*
1012 * Set static data that doesn't need re-initializing..
1013 */
1014 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1015 {
1016 socket->socket.pci_irq = socket->cb_irq;
1017 if (isa_probe)
1018 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1019 else
1020 socket->socket.irq_mask = 0;
1021
1022 dev_printk(KERN_INFO, &socket->dev->dev,
1023 "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, &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 (dev->subordinate->subordinate << 16) | /* subordinate bus */
1052 (dev->subordinate->secondary << 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 list_head *tmp;
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->subordinate >= cardbus_bridge->subordinate)
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->subordinate;
1097
1098 /* check the bus ranges of all silbling bridges to prevent overlap */
1099 list_for_each(tmp, &bridge_to_fix->parent->children) {
1100 struct pci_bus *silbling = pci_bus_b(tmp);
1101 /*
1102 * If the silbling 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 silbling's range:
1106 */
1107 if (silbling->secondary > bridge_to_fix->subordinate
1108 && silbling->secondary <= upper_limit)
1109 upper_limit = silbling->secondary - 1;
1110 }
1111
1112 /* Show that the wanted subordinate number is not possible: */
1113 if (cardbus_bridge->subordinate > upper_limit)
1114 dev_printk(KERN_WARNING, &cardbus_bridge->dev,
1115 "Upper limit for fixing this "
1116 "bridge's parent bridge: #%02x\n", upper_limit);
1117
1118 /* If we have room to increase the bridge's subordinate number, */
1119 if (bridge_to_fix->subordinate < upper_limit) {
1120
1121 /* use the highest number of the hidden bus, within limits */
1122 unsigned char subordinate_to_assign =
1123 min(cardbus_bridge->subordinate, upper_limit);
1124
1125 dev_printk(KERN_INFO, &bridge_to_fix->dev,
1126 "Raising subordinate bus# of parent "
1127 "bus (#%02x) from #%02x to #%02x\n",
1128 bridge_to_fix->number,
1129 bridge_to_fix->subordinate, subordinate_to_assign);
1130
1131 /* Save the new subordinate in the bus struct of the bridge */
1132 bridge_to_fix->subordinate = 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->subordinate);
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 __devinit 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_printk(KERN_ERR, &dev->dev, "no bus associated! "
1157 "(try 'pci=assign-busses')\n");
1158 return -ENODEV;
1159 }
1160
1161 socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1162 if (!socket)
1163 return -ENOMEM;
1164
1165 /* prepare pcmcia_socket */
1166 socket->socket.ops = &yenta_socket_operations;
1167 socket->socket.resource_ops = &pccard_nonstatic_ops;
1168 socket->socket.dev.parent = &dev->dev;
1169 socket->socket.driver_data = socket;
1170 socket->socket.owner = THIS_MODULE;
1171 socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1172 socket->socket.map_size = 0x1000;
1173 socket->socket.cb_dev = dev;
1174
1175 /* prepare struct yenta_socket */
1176 socket->dev = dev;
1177 pci_set_drvdata(dev, socket);
1178
1179 /*
1180 * Do some basic sanity checking..
1181 */
1182 if (pci_enable_device(dev)) {
1183 ret = -EBUSY;
1184 goto free;
1185 }
1186
1187 ret = pci_request_regions(dev, "yenta_socket");
1188 if (ret)
1189 goto disable;
1190
1191 if (!pci_resource_start(dev, 0)) {
1192 dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
1193 ret = -ENODEV;
1194 goto release;
1195 }
1196
1197 /*
1198 * Ok, start setup.. Map the cardbus registers,
1199 * and request the IRQ.
1200 */
1201 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1202 if (!socket->base) {
1203 ret = -ENOMEM;
1204 goto release;
1205 }
1206
1207 /*
1208 * report the subsystem vendor and device for help debugging
1209 * the irq stuff...
1210 */
1211 dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
1212 dev->subsystem_vendor, dev->subsystem_device);
1213
1214 yenta_config_init(socket);
1215
1216 /* Disable all events */
1217 cb_writel(socket, CB_SOCKET_MASK, 0x0);
1218
1219 /* Set up the bridge regions.. */
1220 yenta_allocate_resources(socket);
1221
1222 socket->cb_irq = dev->irq;
1223
1224 /* Do we have special options for the device? */
1225 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1226 id->driver_data < ARRAY_SIZE(cardbus_type)) {
1227 socket->type = &cardbus_type[id->driver_data];
1228
1229 ret = socket->type->override(socket);
1230 if (ret < 0)
1231 goto unmap;
1232 }
1233
1234 /* We must finish initialization here */
1235
1236 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1237 /* No IRQ or request_irq failed. Poll */
1238 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1239 init_timer(&socket->poll_timer);
1240 socket->poll_timer.function = yenta_interrupt_wrapper;
1241 socket->poll_timer.data = (unsigned long)socket;
1242 socket->poll_timer.expires = jiffies + HZ;
1243 add_timer(&socket->poll_timer);
1244 dev_printk(KERN_INFO, &dev->dev,
1245 "no PCI IRQ, CardBus support disabled for this "
1246 "socket.\n");
1247 dev_printk(KERN_INFO, &dev->dev,
1248 "check your BIOS CardBus, BIOS IRQ or ACPI "
1249 "settings.\n");
1250 } else {
1251 socket->socket.features |= SS_CAP_CARDBUS;
1252 }
1253
1254 /* Figure out what the dang thing can do for the PCMCIA layer... */
1255 yenta_interrogate(socket);
1256 yenta_get_socket_capabilities(socket, isa_interrupts);
1257 dev_printk(KERN_INFO, &dev->dev,
1258 "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1259
1260 yenta_fixup_parent_bridge(dev->subordinate);
1261
1262 /* Register it with the pcmcia layer.. */
1263 ret = pcmcia_register_socket(&socket->socket);
1264 if (ret == 0) {
1265 /* Add the yenta register attributes */
1266 ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1267 if (ret == 0)
1268 goto out;
1269
1270 /* error path... */
1271 pcmcia_unregister_socket(&socket->socket);
1272 }
1273
1274 unmap:
1275 iounmap(socket->base);
1276 release:
1277 pci_release_regions(dev);
1278 disable:
1279 pci_disable_device(dev);
1280 free:
1281 kfree(socket);
1282 out:
1283 return ret;
1284 }
1285
1286 #ifdef CONFIG_PM
1287 static int yenta_dev_suspend_noirq(struct device *dev)
1288 {
1289 struct pci_dev *pdev = to_pci_dev(dev);
1290 struct yenta_socket *socket = pci_get_drvdata(pdev);
1291
1292 if (!socket)
1293 return 0;
1294
1295 if (socket->type && socket->type->save_state)
1296 socket->type->save_state(socket);
1297
1298 pci_save_state(pdev);
1299 pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1300 pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1301 pci_disable_device(pdev);
1302
1303 return 0;
1304 }
1305
1306 static int yenta_dev_resume_noirq(struct device *dev)
1307 {
1308 struct pci_dev *pdev = to_pci_dev(dev);
1309 struct yenta_socket *socket = pci_get_drvdata(pdev);
1310 int ret;
1311
1312 if (!socket)
1313 return 0;
1314
1315 pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1316 pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1317
1318 ret = pci_enable_device(pdev);
1319 if (ret)
1320 return ret;
1321
1322 pci_set_master(pdev);
1323
1324 if (socket->type && socket->type->restore_state)
1325 socket->type->restore_state(socket);
1326
1327 return 0;
1328 }
1329
1330 static const struct dev_pm_ops yenta_pm_ops = {
1331 .suspend_noirq = yenta_dev_suspend_noirq,
1332 .resume_noirq = yenta_dev_resume_noirq,
1333 .freeze_noirq = yenta_dev_suspend_noirq,
1334 .thaw_noirq = yenta_dev_resume_noirq,
1335 .poweroff_noirq = yenta_dev_suspend_noirq,
1336 .restore_noirq = yenta_dev_resume_noirq,
1337 };
1338
1339 #define YENTA_PM_OPS (&yenta_pm_ops)
1340 #else
1341 #define YENTA_PM_OPS NULL
1342 #endif
1343
1344 #define CB_ID(vend, dev, type) \
1345 { \
1346 .vendor = vend, \
1347 .device = dev, \
1348 .subvendor = PCI_ANY_ID, \
1349 .subdevice = PCI_ANY_ID, \
1350 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1351 .class_mask = ~0, \
1352 .driver_data = CARDBUS_TYPE_##type, \
1353 }
1354
1355 static struct pci_device_id yenta_table[] = {
1356 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1357
1358 /*
1359 * TBD: Check if these TI variants can use more
1360 * advanced overrides instead. (I can't get the
1361 * data sheets for these devices. --rmk)
1362 */
1363 #ifdef CONFIG_YENTA_TI
1364 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1365
1366 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1367 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1368
1369 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1370 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1371 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1372 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1373 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1374 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1375 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1376 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1377 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1378 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1379 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1380 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1381 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1382 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1383 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1384 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1385 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1386
1387 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1388 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1389
1390 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1391 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1392 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1393 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1394 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1395 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1396 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1397 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1398
1399 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1400 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1401 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1402 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1403 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1404 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1405 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1406 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1407 #endif /* CONFIG_YENTA_TI */
1408
1409 #ifdef CONFIG_YENTA_RICOH
1410 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1411 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1412 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1413 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1414 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1415 #endif
1416
1417 #ifdef CONFIG_YENTA_TOSHIBA
1418 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1419 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1420 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1421 #endif
1422
1423 #ifdef CONFIG_YENTA_O2
1424 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1425 #endif
1426
1427 /* match any cardbus bridge */
1428 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1429 { /* all zeroes */ }
1430 };
1431 MODULE_DEVICE_TABLE(pci, yenta_table);
1432
1433
1434 static struct pci_driver yenta_cardbus_driver = {
1435 .name = "yenta_cardbus",
1436 .id_table = yenta_table,
1437 .probe = yenta_probe,
1438 .remove = __devexit_p(yenta_close),
1439 .driver.pm = YENTA_PM_OPS,
1440 };
1441
1442
1443 static int __init yenta_socket_init(void)
1444 {
1445 return pci_register_driver(&yenta_cardbus_driver);
1446 }
1447
1448
1449 static void __exit yenta_socket_exit(void)
1450 {
1451 pci_unregister_driver(&yenta_cardbus_driver);
1452 }
1453
1454
1455 module_init(yenta_socket_init);
1456 module_exit(yenta_socket_exit);
1457
1458 MODULE_LICENSE("GPL");