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bpf: NULL pointer check is not needed in BPF_CGROUP_RUN_PROG_INET_SOCK
[linux-2.6/btrfs-unstable.git] / drivers / pcmcia / yenta_socket.c
blobab3da2262f0fc89f7b65fe898d6efa5bd3113d8f
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->bus, &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(struct timer_list *t)
538 {
539 struct yenta_socket *socket = from_timer(socket, t, poll_timer);
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->bus, res, &region);
713 if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
714 return 0;
715 dev_info(&dev->dev,
716 "Preassigned resource %d busy or not available, reconfiguring...\n",
717 nr);
718 }
719
720 if (type & IORESOURCE_IO) {
721 if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
722 (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
723 (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
724 return 1;
725 } else {
726 if (type & IORESOURCE_PREFETCH) {
727 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
728 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
729 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
730 return 1;
731 /* Approximating prefetchable by non-prefetchable */
732 res->flags = IORESOURCE_MEM;
733 }
734 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
735 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
736 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
737 return 1;
738 }
739
740 dev_info(&dev->dev,
741 "no resource of type %x available, trying to continue...\n",
742 type);
743 res->start = res->end = res->flags = 0;
744 return 0;
745 }
746
747 /*
748 * Allocate the bridge mappings for the device..
749 */
750 static void yenta_allocate_resources(struct yenta_socket *socket)
751 {
752 int program = 0;
753 program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
754 PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
755 program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
756 PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
757 program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
758 PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
759 program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
760 PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
761 if (program)
762 pci_setup_cardbus(socket->dev->subordinate);
763 }
764
765
766 /*
767 * Free the bridge mappings for the device..
768 */
769 static void yenta_free_resources(struct yenta_socket *socket)
770 {
771 int i;
772 for (i = 0; i < 4; i++) {
773 struct resource *res;
774 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
775 if (res->start != 0 && res->end != 0)
776 release_resource(res);
777 res->start = res->end = res->flags = 0;
778 }
779 }
780
781
782 /*
783 * Close it down - release our resources and go home..
784 */
785 static void yenta_close(struct pci_dev *dev)
786 {
787 struct yenta_socket *sock = pci_get_drvdata(dev);
788
789 /* Remove the register attributes */
790 device_remove_file(&dev->dev, &dev_attr_yenta_registers);
791
792 /* we don't want a dying socket registered */
793 pcmcia_unregister_socket(&sock->socket);
794
795 /* Disable all events so we don't die in an IRQ storm */
796 cb_writel(sock, CB_SOCKET_MASK, 0x0);
797 exca_writeb(sock, I365_CSCINT, 0);
798
799 if (sock->cb_irq)
800 free_irq(sock->cb_irq, sock);
801 else
802 del_timer_sync(&sock->poll_timer);
803
804 iounmap(sock->base);
805 yenta_free_resources(sock);
806
807 pci_release_regions(dev);
808 pci_disable_device(dev);
809 pci_set_drvdata(dev, NULL);
810 kfree(sock);
811 }
812
813
814 static struct pccard_operations yenta_socket_operations = {
815 .init = yenta_sock_init,
816 .suspend = yenta_sock_suspend,
817 .get_status = yenta_get_status,
818 .set_socket = yenta_set_socket,
819 .set_io_map = yenta_set_io_map,
820 .set_mem_map = yenta_set_mem_map,
821 };
822
823
824 #ifdef CONFIG_YENTA_TI
825 #include "ti113x.h"
826 #endif
827 #ifdef CONFIG_YENTA_RICOH
828 #include "ricoh.h"
829 #endif
830 #ifdef CONFIG_YENTA_TOSHIBA
831 #include "topic.h"
832 #endif
833 #ifdef CONFIG_YENTA_O2
834 #include "o2micro.h"
835 #endif
836
837 enum {
838 CARDBUS_TYPE_DEFAULT = -1,
839 CARDBUS_TYPE_TI,
840 CARDBUS_TYPE_TI113X,
841 CARDBUS_TYPE_TI12XX,
842 CARDBUS_TYPE_TI1250,
843 CARDBUS_TYPE_RICOH,
844 CARDBUS_TYPE_TOPIC95,
845 CARDBUS_TYPE_TOPIC97,
846 CARDBUS_TYPE_O2MICRO,
847 CARDBUS_TYPE_ENE,
848 };
849
850 /*
851 * Different cardbus controllers have slightly different
852 * initialization sequences etc details. List them here..
853 */
854 static struct cardbus_type cardbus_type[] = {
855 #ifdef CONFIG_YENTA_TI
856 [CARDBUS_TYPE_TI] = {
857 .override = ti_override,
858 .save_state = ti_save_state,
859 .restore_state = ti_restore_state,
860 .sock_init = ti_init,
861 },
862 [CARDBUS_TYPE_TI113X] = {
863 .override = ti113x_override,
864 .save_state = ti_save_state,
865 .restore_state = ti_restore_state,
866 .sock_init = ti_init,
867 },
868 [CARDBUS_TYPE_TI12XX] = {
869 .override = ti12xx_override,
870 .save_state = ti_save_state,
871 .restore_state = ti_restore_state,
872 .sock_init = ti_init,
873 },
874 [CARDBUS_TYPE_TI1250] = {
875 .override = ti1250_override,
876 .save_state = ti_save_state,
877 .restore_state = ti_restore_state,
878 .sock_init = ti_init,
879 },
880 [CARDBUS_TYPE_ENE] = {
881 .override = ene_override,
882 .save_state = ti_save_state,
883 .restore_state = ti_restore_state,
884 .sock_init = ti_init,
885 },
886 #endif
887 #ifdef CONFIG_YENTA_RICOH
888 [CARDBUS_TYPE_RICOH] = {
889 .override = ricoh_override,
890 .save_state = ricoh_save_state,
891 .restore_state = ricoh_restore_state,
892 },
893 #endif
894 #ifdef CONFIG_YENTA_TOSHIBA
895 [CARDBUS_TYPE_TOPIC95] = {
896 .override = topic95_override,
897 },
898 [CARDBUS_TYPE_TOPIC97] = {
899 .override = topic97_override,
900 },
901 #endif
902 #ifdef CONFIG_YENTA_O2
903 [CARDBUS_TYPE_O2MICRO] = {
904 .override = o2micro_override,
905 .restore_state = o2micro_restore_state,
906 },
907 #endif
908 };
909
910
911 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
912 {
913 int i;
914 unsigned long val;
915 u32 mask;
916 u8 reg;
917
918 /*
919 * Probe for usable interrupts using the force
920 * register to generate bogus card status events.
921 */
922 cb_writel(socket, CB_SOCKET_EVENT, -1);
923 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
924 reg = exca_readb(socket, I365_CSCINT);
925 exca_writeb(socket, I365_CSCINT, 0);
926 val = probe_irq_on() & isa_irq_mask;
927 for (i = 1; i < 16; i++) {
928 if (!((val >> i) & 1))
929 continue;
930 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
931 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
932 udelay(100);
933 cb_writel(socket, CB_SOCKET_EVENT, -1);
934 }
935 cb_writel(socket, CB_SOCKET_MASK, 0);
936 exca_writeb(socket, I365_CSCINT, reg);
937
938 mask = probe_irq_mask(val) & 0xffff;
939
940 return mask;
941 }
942
943
944 /*
945 * yenta PCI irq probing.
946 * currently only used in the TI/EnE initialization code
947 */
948 #ifdef CONFIG_YENTA_TI
949
950 /* interrupt handler, only used during probing */
951 static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
952 {
953 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
954 u8 csc;
955 u32 cb_event;
956
957 /* Clear interrupt status for the event */
958 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
959 cb_writel(socket, CB_SOCKET_EVENT, -1);
960 csc = exca_readb(socket, I365_CSC);
961
962 if (cb_event || csc) {
963 socket->probe_status = 1;
964 return IRQ_HANDLED;
965 }
966
967 return IRQ_NONE;
968 }
969
970 /* probes the PCI interrupt, use only on override functions */
971 static int yenta_probe_cb_irq(struct yenta_socket *socket)
972 {
973 u8 reg = 0;
974
975 if (!socket->cb_irq)
976 return -1;
977
978 socket->probe_status = 0;
979
980 if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
981 dev_warn(&socket->dev->dev,
982 "request_irq() in yenta_probe_cb_irq() failed!\n");
983 return -1;
984 }
985
986 /* generate interrupt, wait */
987 if (!socket->dev->irq)
988 reg = exca_readb(socket, I365_CSCINT);
989 exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
990 cb_writel(socket, CB_SOCKET_EVENT, -1);
991 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
992 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
993
994 msleep(100);
995
996 /* disable interrupts */
997 cb_writel(socket, CB_SOCKET_MASK, 0);
998 exca_writeb(socket, I365_CSCINT, reg);
999 cb_writel(socket, CB_SOCKET_EVENT, -1);
1000 exca_readb(socket, I365_CSC);
1001
1002 free_irq(socket->cb_irq, socket);
1003
1004 return (int) socket->probe_status;
1005 }
1006
1007 #endif /* CONFIG_YENTA_TI */
1008
1009
1010 /*
1011 * Set static data that doesn't need re-initializing..
1012 */
1013 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1014 {
1015 socket->socket.pci_irq = socket->cb_irq;
1016 if (isa_probe)
1017 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1018 else
1019 socket->socket.irq_mask = 0;
1020
1021 dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
1022 socket->socket.irq_mask, socket->cb_irq);
1023 }
1024
1025 /*
1026 * Initialize the standard cardbus registers
1027 */
1028 static void yenta_config_init(struct yenta_socket *socket)
1029 {
1030 u16 bridge;
1031 struct pci_dev *dev = socket->dev;
1032 struct pci_bus_region region;
1033
1034 pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
1035
1036 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1037 config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1038 config_writew(socket, PCI_COMMAND,
1039 PCI_COMMAND_IO |
1040 PCI_COMMAND_MEMORY |
1041 PCI_COMMAND_MASTER |
1042 PCI_COMMAND_WAIT);
1043
1044 /* MAGIC NUMBERS! Fixme */
1045 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1046 config_writeb(socket, PCI_LATENCY_TIMER, 168);
1047 config_writel(socket, PCI_PRIMARY_BUS,
1048 (176 << 24) | /* sec. latency timer */
1049 ((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
1050 ((unsigned int)dev->subordinate->busn_res.start << 8) | /* secondary bus */
1051 dev->subordinate->primary); /* primary bus */
1052
1053 /*
1054 * Set up the bridging state:
1055 * - enable write posting.
1056 * - memory window 0 prefetchable, window 1 non-prefetchable
1057 * - PCI interrupts enabled if a PCI interrupt exists..
1058 */
1059 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1060 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1061 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1062 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1063 }
1064
1065 /**
1066 * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1067 * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1068 *
1069 * Checks if devices on the bus which the CardBus bridge bridges to would be
1070 * invisible during PCI scans because of a misconfigured subordinate number
1071 * of the parent brige - some BIOSes seem to be too lazy to set it right.
1072 * Does the fixup carefully by checking how far it can go without conflicts.
1073 * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1074 */
1075 static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1076 {
1077 struct pci_bus *sibling;
1078 unsigned char upper_limit;
1079 /*
1080 * We only check and fix the parent bridge: All systems which need
1081 * this fixup that have been reviewed are laptops and the only bridge
1082 * which needed fixing was the parent bridge of the CardBus bridge:
1083 */
1084 struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1085
1086 /* Check bus numbers are already set up correctly: */
1087 if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1088 return; /* The subordinate number is ok, nothing to do */
1089
1090 if (!bridge_to_fix->parent)
1091 return; /* Root bridges are ok */
1092
1093 /* stay within the limits of the bus range of the parent: */
1094 upper_limit = bridge_to_fix->parent->busn_res.end;
1095
1096 /* check the bus ranges of all sibling bridges to prevent overlap */
1097 list_for_each_entry(sibling, &bridge_to_fix->parent->children,
1098 node) {
1099 /*
1100 * If the sibling has a higher secondary bus number
1101 * and it's secondary is equal or smaller than our
1102 * current upper limit, set the new upper limit to
1103 * the bus number below the sibling's range:
1104 */
1105 if (sibling->busn_res.start > bridge_to_fix->busn_res.end
1106 && sibling->busn_res.start <= upper_limit)
1107 upper_limit = sibling->busn_res.start - 1;
1108 }
1109
1110 /* Show that the wanted subordinate number is not possible: */
1111 if (cardbus_bridge->busn_res.end > upper_limit)
1112 dev_warn(&cardbus_bridge->dev,
1113 "Upper limit for fixing this bridge's parent bridge: #%02x\n",
1114 upper_limit);
1115
1116 /* If we have room to increase the bridge's subordinate number, */
1117 if (bridge_to_fix->busn_res.end < upper_limit) {
1118
1119 /* use the highest number of the hidden bus, within limits */
1120 unsigned char subordinate_to_assign =
1121 min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1122
1123 dev_info(&bridge_to_fix->dev,
1124 "Raising subordinate bus# of parent bus (#%02x) from #%02x to #%02x\n",
1125 bridge_to_fix->number,
1126 (int)bridge_to_fix->busn_res.end,
1127 subordinate_to_assign);
1128
1129 /* Save the new subordinate in the bus struct of the bridge */
1130 bridge_to_fix->busn_res.end = subordinate_to_assign;
1131
1132 /* and update the PCI config space with the new subordinate */
1133 pci_write_config_byte(bridge_to_fix->self,
1134 PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1135 }
1136 }
1137
1138 /*
1139 * Initialize a cardbus controller. Make sure we have a usable
1140 * interrupt, and that we can map the cardbus area. Fill in the
1141 * socket information structure..
1142 */
1143 static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1144 {
1145 struct yenta_socket *socket;
1146 int ret;
1147
1148 /*
1149 * If we failed to assign proper bus numbers for this cardbus
1150 * controller during PCI probe, its subordinate pci_bus is NULL.
1151 * Bail out if so.
1152 */
1153 if (!dev->subordinate) {
1154 dev_err(&dev->dev, "no bus associated! (try 'pci=assign-busses')\n");
1155 return -ENODEV;
1156 }
1157
1158 socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1159 if (!socket)
1160 return -ENOMEM;
1161
1162 /* prepare pcmcia_socket */
1163 socket->socket.ops = &yenta_socket_operations;
1164 socket->socket.resource_ops = &pccard_nonstatic_ops;
1165 socket->socket.dev.parent = &dev->dev;
1166 socket->socket.driver_data = socket;
1167 socket->socket.owner = THIS_MODULE;
1168 socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1169 socket->socket.map_size = 0x1000;
1170 socket->socket.cb_dev = dev;
1171
1172 /* prepare struct yenta_socket */
1173 socket->dev = dev;
1174 pci_set_drvdata(dev, socket);
1175
1176 /*
1177 * Do some basic sanity checking..
1178 */
1179 if (pci_enable_device(dev)) {
1180 ret = -EBUSY;
1181 goto free;
1182 }
1183
1184 ret = pci_request_regions(dev, "yenta_socket");
1185 if (ret)
1186 goto disable;
1187
1188 if (!pci_resource_start(dev, 0)) {
1189 dev_err(&dev->dev, "No cardbus resource!\n");
1190 ret = -ENODEV;
1191 goto release;
1192 }
1193
1194 /*
1195 * Ok, start setup.. Map the cardbus registers,
1196 * and request the IRQ.
1197 */
1198 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1199 if (!socket->base) {
1200 ret = -ENOMEM;
1201 goto release;
1202 }
1203
1204 /*
1205 * report the subsystem vendor and device for help debugging
1206 * the irq stuff...
1207 */
1208 dev_info(&dev->dev, "CardBus bridge found [%04x:%04x]\n",
1209 dev->subsystem_vendor, dev->subsystem_device);
1210
1211 yenta_config_init(socket);
1212
1213 /* Disable all events */
1214 cb_writel(socket, CB_SOCKET_MASK, 0x0);
1215
1216 /* Set up the bridge regions.. */
1217 yenta_allocate_resources(socket);
1218
1219 socket->cb_irq = dev->irq;
1220
1221 /* Do we have special options for the device? */
1222 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1223 id->driver_data < ARRAY_SIZE(cardbus_type)) {
1224 socket->type = &cardbus_type[id->driver_data];
1225
1226 ret = socket->type->override(socket);
1227 if (ret < 0)
1228 goto unmap;
1229 }
1230
1231 /* We must finish initialization here */
1232
1233 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1234 /* No IRQ or request_irq failed. Poll */
1235 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1236 timer_setup(&socket->poll_timer, yenta_interrupt_wrapper, 0);
1237 mod_timer(&socket->poll_timer, jiffies + HZ);
1238 dev_info(&dev->dev,
1239 "no PCI IRQ, CardBus support disabled for this socket.\n");
1240 dev_info(&dev->dev,
1241 "check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
1242 } else {
1243 socket->socket.features |= SS_CAP_CARDBUS;
1244 }
1245
1246 /* Figure out what the dang thing can do for the PCMCIA layer... */
1247 yenta_interrogate(socket);
1248 yenta_get_socket_capabilities(socket, isa_interrupts);
1249 dev_info(&dev->dev, "Socket status: %08x\n",
1250 cb_readl(socket, CB_SOCKET_STATE));
1251
1252 yenta_fixup_parent_bridge(dev->subordinate);
1253
1254 /* Register it with the pcmcia layer.. */
1255 ret = pcmcia_register_socket(&socket->socket);
1256 if (ret)
1257 goto free_irq;
1258
1259 /* Add the yenta register attributes */
1260 ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1261 if (ret)
1262 goto unregister_socket;
1263
1264 return ret;
1265
1266 /* error path... */
1267 unregister_socket:
1268 pcmcia_unregister_socket(&socket->socket);
1269 free_irq:
1270 if (socket->cb_irq)
1271 free_irq(socket->cb_irq, socket);
1272 else
1273 del_timer_sync(&socket->poll_timer);
1274 unmap:
1275 iounmap(socket->base);
1276 yenta_free_resources(socket);
1277 release:
1278 pci_release_regions(dev);
1279 disable:
1280 pci_disable_device(dev);
1281 free:
1282 pci_set_drvdata(dev, NULL);
1283 kfree(socket);
1284 return ret;
1285 }
1286
1287 #ifdef CONFIG_PM
1288 static int yenta_dev_suspend_noirq(struct device *dev)
1289 {
1290 struct pci_dev *pdev = to_pci_dev(dev);
1291 struct yenta_socket *socket = pci_get_drvdata(pdev);
1292
1293 if (!socket)
1294 return 0;
1295
1296 if (socket->type && socket->type->save_state)
1297 socket->type->save_state(socket);
1298
1299 pci_save_state(pdev);
1300 pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1301 pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1302 pci_disable_device(pdev);
1303
1304 return 0;
1305 }
1306
1307 static int yenta_dev_resume_noirq(struct device *dev)
1308 {
1309 struct pci_dev *pdev = to_pci_dev(dev);
1310 struct yenta_socket *socket = pci_get_drvdata(pdev);
1311 int ret;
1312
1313 if (!socket)
1314 return 0;
1315
1316 pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1317 pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1318
1319 ret = pci_enable_device(pdev);
1320 if (ret)
1321 return ret;
1322
1323 pci_set_master(pdev);
1324
1325 if (socket->type && socket->type->restore_state)
1326 socket->type->restore_state(socket);
1327
1328 return 0;
1329 }
1330
1331 static const struct dev_pm_ops yenta_pm_ops = {
1332 .suspend_noirq = yenta_dev_suspend_noirq,
1333 .resume_noirq = yenta_dev_resume_noirq,
1334 .freeze_noirq = yenta_dev_suspend_noirq,
1335 .thaw_noirq = yenta_dev_resume_noirq,
1336 .poweroff_noirq = yenta_dev_suspend_noirq,
1337 .restore_noirq = yenta_dev_resume_noirq,
1338 };
1339
1340 #define YENTA_PM_OPS (&yenta_pm_ops)
1341 #else
1342 #define YENTA_PM_OPS NULL
1343 #endif
1344
1345 #define CB_ID(vend, dev, type) \
1346 { \
1347 .vendor = vend, \
1348 .device = dev, \
1349 .subvendor = PCI_ANY_ID, \
1350 .subdevice = PCI_ANY_ID, \
1351 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1352 .class_mask = ~0, \
1353 .driver_data = CARDBUS_TYPE_##type, \
1354 }
1355
1356 static const struct pci_device_id yenta_table[] = {
1357 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1358
1359 /*
1360 * TBD: Check if these TI variants can use more
1361 * advanced overrides instead. (I can't get the
1362 * data sheets for these devices. --rmk)
1363 */
1364 #ifdef CONFIG_YENTA_TI
1365 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1366
1367 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1368 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1369
1370 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1371 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1372 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1373 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1374 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1375 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1376 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1377 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1378 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1379 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1380 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1381 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1382 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1383 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1384 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1385 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1386 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1387
1388 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1389 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1390
1391 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1392 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1393 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1394 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1395 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1396 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1397 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1398 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1399
1400 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1401 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1402 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1403 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1404 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1405 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1406 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1407 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1408 #endif /* CONFIG_YENTA_TI */
1409
1410 #ifdef CONFIG_YENTA_RICOH
1411 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1412 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1413 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1414 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1415 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1416 #endif
1417
1418 #ifdef CONFIG_YENTA_TOSHIBA
1419 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1420 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1421 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1422 #endif
1423
1424 #ifdef CONFIG_YENTA_O2
1425 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1426 #endif
1427
1428 /* match any cardbus bridge */
1429 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1430 { /* all zeroes */ }
1431 };
1432 MODULE_DEVICE_TABLE(pci, yenta_table);
1433
1434
1435 static struct pci_driver yenta_cardbus_driver = {
1436 .name = "yenta_cardbus",
1437 .id_table = yenta_table,
1438 .probe = yenta_probe,
1439 .remove = yenta_close,
1440 .driver.pm = YENTA_PM_OPS,
1441 };
1442
1443 module_pci_driver(yenta_cardbus_driver);
1444
1445 MODULE_LICENSE("GPL");
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