Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/pcmcia/yenta_socket.c

  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(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->bus, 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 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->bus, &region, &dev->resource[0]);
1037 
1038         config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1039         config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1040         config_writew(socket, PCI_COMMAND,
1041                         PCI_COMMAND_IO |
1042                         PCI_COMMAND_MEMORY |
1043                         PCI_COMMAND_MASTER |
1044                         PCI_COMMAND_WAIT);
1045 
1046         /* MAGIC NUMBERS! Fixme */
1047         config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1048         config_writeb(socket, PCI_LATENCY_TIMER, 168);
1049         config_writel(socket, PCI_PRIMARY_BUS,
1050                 (176 << 24) |                      /* sec. latency timer */
1051                 ((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
1052                 ((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
1053                 dev->subordinate->primary);                /* primary bus */
1054 
1055         /*
1056          * Set up the bridging state:
1057          *  - enable write posting.
1058          *  - memory window 0 prefetchable, window 1 non-prefetchable
1059          *  - PCI interrupts enabled if a PCI interrupt exists..
1060          */
1061         bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1062         bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1063         bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1064         config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1065 }
1066 
1067 /**
1068  * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1069  * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1070  *
1071  * Checks if devices on the bus which the CardBus bridge bridges to would be
1072  * invisible during PCI scans because of a misconfigured subordinate number
1073  * of the parent brige - some BIOSes seem to be too lazy to set it right.
1074  * Does the fixup carefully by checking how far it can go without conflicts.
1075  * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1076  */
1077 static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1078 {
1079         struct pci_bus *sibling;
1080         unsigned char upper_limit;
1081         /*
1082          * We only check and fix the parent bridge: All systems which need
1083          * this fixup that have been reviewed are laptops and the only bridge
1084          * which needed fixing was the parent bridge of the CardBus bridge:
1085          */
1086         struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1087 
1088         /* Check bus numbers are already set up correctly: */
1089         if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1090                 return; /* The subordinate number is ok, nothing to do */
1091 
1092         if (!bridge_to_fix->parent)
1093                 return; /* Root bridges are ok */
1094 
1095         /* stay within the limits of the bus range of the parent: */
1096         upper_limit = bridge_to_fix->parent->busn_res.end;
1097 
1098         /* check the bus ranges of all sibling bridges to prevent overlap */
1099         list_for_each_entry(sibling, &bridge_to_fix->parent->children,
1100                         node) {
1101                 /*
1102                  * If the sibling has a higher secondary bus number
1103                  * and it's secondary is equal or smaller than our
1104                  * current upper limit, set the new upper limit to
1105                  * the bus number below the sibling's range:
1106                  */
1107                 if (sibling->busn_res.start > bridge_to_fix->busn_res.end
1108                     && sibling->busn_res.start <= upper_limit)
1109                         upper_limit = sibling->busn_res.start - 1;
1110         }
1111 
1112         /* Show that the wanted subordinate number is not possible: */
1113         if (cardbus_bridge->busn_res.end > upper_limit)
1114                 dev_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->busn_res.end < upper_limit) {
1120 
1121                 /* use the highest number of the hidden bus, within limits */
1122                 unsigned char subordinate_to_assign =
1123                         min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1124 
1125                 dev_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                            (int)bridge_to_fix->busn_res.end, subordinate_to_assign);
1130 
1131                 /* Save the new subordinate in the bus struct of the bridge */
1132                 bridge_to_fix->busn_res.end = subordinate_to_assign;
1133 
1134                 /* and update the PCI config space with the new subordinate */
1135                 pci_write_config_byte(bridge_to_fix->self,
1136                         PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1137         }
1138 }
1139 
1140 /*
1141  * Initialize a cardbus controller. Make sure we have a usable
1142  * interrupt, and that we can map the cardbus area. Fill in the
1143  * socket information structure..
1144  */
1145 static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1146 {
1147         struct yenta_socket *socket;
1148         int ret;
1149 
1150         /*
1151          * If we failed to assign proper bus numbers for this cardbus
1152          * controller during PCI probe, its subordinate pci_bus is NULL.
1153          * Bail out if so.
1154          */
1155         if (!dev->subordinate) {
1156                 dev_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 DEFINE_PCI_DEVICE_TABLE(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         = yenta_close,
1439         .driver.pm      = YENTA_PM_OPS,
1440 };
1441 
1442 module_pci_driver(yenta_cardbus_driver);
1443 
1444 MODULE_LICENSE("GPL");
1445 

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