1 /*
2 * Regular cardbus driver ("yenta_socket")
3 *
4 * (C) Copyright 1999, 2000 Linus Torvalds
5 *
6 * Changelog:
7 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
8 * Dynamically adjust the size of the bridge resource
9 *
10 * May 2003: Dominik Brodowski <linux@brodo.de>
11 * Merge pci_socket.c and yenta.c into one file
12 */
13 #include <linux/init.h>
14 #include <linux/pci.h>
15 #include <linux/sched.h>
16 #include <linux/workqueue.h>
17 #include <linux/interrupt.h>
18 #include <linux/delay.h>
19 #include <linux/module.h>
20
21 #include <pcmcia/version.h>
22 #include <pcmcia/cs_types.h>
23 #include <pcmcia/ss.h>
24 #include <pcmcia/cs.h>
25
26 #include <asm/io.h>
27
28 #include "yenta_socket.h"
29 #include "i82365.h"
30
31 static int disable_clkrun;
32 module_param(disable_clkrun, bool, 0444);
33 MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
34
35 #if 0
36 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
37 #else
38 #define debug(x,args...)
39 #endif
40
41 /* Don't ask.. */
42 #define to_cycles(ns) ((ns)/120)
43 #define to_ns(cycles) ((cycles)*120)
44
45 static int yenta_probe_cb_irq(struct yenta_socket *socket);
46
47
48 static unsigned int override_bios;
49 module_param(override_bios, uint, 0000);
50 MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation");
51
52 /*
53 * Generate easy-to-use ways of reading a cardbus sockets
54 * regular memory space ("cb_xxx"), configuration space
55 * ("config_xxx") and compatibility space ("exca_xxxx")
56 */
57 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
58 {
59 u32 val = readl(socket->base + reg);
60 debug("%p %04x %08x\n", socket, reg, val);
61 return val;
62 }
63
64 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
65 {
66 debug("%p %04x %08x\n", socket, reg, val);
67 writel(val, socket->base + reg);
68 }
69
70 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
71 {
72 u8 val;
73 pci_read_config_byte(socket->dev, offset, &val);
74 debug("%p %04x %02x\n", socket, offset, val);
75 return val;
76 }
77
78 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
79 {
80 u16 val;
81 pci_read_config_word(socket->dev, offset, &val);
82 debug("%p %04x %04x\n", socket, offset, val);
83 return val;
84 }
85
86 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
87 {
88 u32 val;
89 pci_read_config_dword(socket->dev, offset, &val);
90 debug("%p %04x %08x\n", socket, offset, val);
91 return val;
92 }
93
94 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
95 {
96 debug("%p %04x %02x\n", socket, offset, val);
97 pci_write_config_byte(socket->dev, offset, val);
98 }
99
100 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
101 {
102 debug("%p %04x %04x\n", socket, offset, val);
103 pci_write_config_word(socket->dev, offset, val);
104 }
105
106 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
107 {
108 debug("%p %04x %08x\n", socket, offset, val);
109 pci_write_config_dword(socket->dev, offset, val);
110 }
111
112 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
113 {
114 u8 val = readb(socket->base + 0x800 + reg);
115 debug("%p %04x %02x\n", socket, reg, val);
116 return val;
117 }
118
119 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
120 {
121 u16 val;
122 val = readb(socket->base + 0x800 + reg);
123 val |= readb(socket->base + 0x800 + reg + 1) << 8;
124 debug("%p %04x %04x\n", socket, reg, val);
125 return val;
126 }
127
128 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
129 {
130 debug("%p %04x %02x\n", socket, reg, val);
131 writeb(val, socket->base + 0x800 + reg);
132 }
133
134 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
135 {
136 debug("%p %04x %04x\n", socket, reg, val);
137 writeb(val, socket->base + 0x800 + reg);
138 writeb(val >> 8, socket->base + 0x800 + reg + 1);
139 }
140
141 /*
142 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
143 * on what kind of card is inserted..
144 */
145 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
146 {
147 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
148 unsigned int val;
149 u32 state = cb_readl(socket, CB_SOCKET_STATE);
150
151 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
152 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
153 val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD
154 | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
155
156 if (state & CB_CBCARD) {
157 val |= SS_CARDBUS;
158 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
159 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
160 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
161 } else {
162 u8 status = exca_readb(socket, I365_STATUS);
163 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
164 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
165 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
166 } else {
167 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
168 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
169 }
170 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
171 val |= (status & I365_CS_READY) ? SS_READY : 0;
172 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
173 }
174
175 *value = val;
176 return 0;
177 }
178
179 static int yenta_Vcc_power(u32 control)
180 {
181 switch (control & CB_SC_VCC_MASK) {
182 case CB_SC_VCC_5V: return 50;
183 case CB_SC_VCC_3V: return 33;
184 default: return 0;
185 }
186 }
187
188 static int yenta_Vpp_power(u32 control)
189 {
190 switch (control & CB_SC_VPP_MASK) {
191 case CB_SC_VPP_12V: return 120;
192 case CB_SC_VPP_5V: return 50;
193 case CB_SC_VPP_3V: return 33;
194 default: return 0;
195 }
196 }
197
198 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
199 {
200 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
201 u8 reg;
202 u32 control;
203
204 control = cb_readl(socket, CB_SOCKET_CONTROL);
205
206 state->Vcc = yenta_Vcc_power(control);
207 state->Vpp = yenta_Vpp_power(control);
208 state->io_irq = socket->io_irq;
209
210 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
211 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
212 if (bridge & CB_BRIDGE_CRST)
213 state->flags |= SS_RESET;
214 return 0;
215 }
216
217 /* 16-bit card state.. */
218 reg = exca_readb(socket, I365_POWER);
219 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
220 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
221
222 reg = exca_readb(socket, I365_INTCTL);
223 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
224 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
225
226 reg = exca_readb(socket, I365_CSCINT);
227 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
228 if (state->flags & SS_IOCARD) {
229 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
230 } else {
231 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
232 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
233 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
234 }
235
236 return 0;
237 }
238
239 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
240 {
241 u32 reg = 0; /* CB_SC_STPCLK? */
242 switch (state->Vcc) {
243 case 33: reg = CB_SC_VCC_3V; break;
244 case 50: reg = CB_SC_VCC_5V; break;
245 default: reg = 0; break;
246 }
247 switch (state->Vpp) {
248 case 33: reg |= CB_SC_VPP_3V; break;
249 case 50: reg |= CB_SC_VPP_5V; break;
250 case 120: reg |= CB_SC_VPP_12V; break;
251 }
252 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
253 cb_writel(socket, CB_SOCKET_CONTROL, reg);
254 }
255
256 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
257 {
258 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
259 u16 bridge;
260
261 yenta_set_power(socket, state);
262 socket->io_irq = state->io_irq;
263 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
264 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
265 u8 intr;
266 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
267
268 /* ISA interrupt control? */
269 intr = exca_readb(socket, I365_INTCTL);
270 intr = (intr & ~0xf);
271 if (!socket->cb_irq) {
272 intr |= state->io_irq;
273 bridge |= CB_BRIDGE_INTR;
274 }
275 exca_writeb(socket, I365_INTCTL, intr);
276 } else {
277 u8 reg;
278
279 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
280 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
281 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
282 if (state->io_irq != socket->cb_irq) {
283 reg |= state->io_irq;
284 bridge |= CB_BRIDGE_INTR;
285 }
286 exca_writeb(socket, I365_INTCTL, reg);
287
288 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
289 reg |= I365_PWR_NORESET;
290 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
291 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
292 if (exca_readb(socket, I365_POWER) != reg)
293 exca_writeb(socket, I365_POWER, reg);
294
295 /* CSC interrupt: no ISA irq for CSC */
296 reg = I365_CSC_DETECT;
297 if (state->flags & SS_IOCARD) {
298 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
299 } else {
300 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
301 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
302 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
303 }
304 exca_writeb(socket, I365_CSCINT, reg);
305 exca_readb(socket, I365_CSC);
306 if(sock->zoom_video)
307 sock->zoom_video(sock, state->flags & SS_ZVCARD);
308 }
309 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
310 /* Socket event mask: get card insert/remove events.. */
311 cb_writel(socket, CB_SOCKET_EVENT, -1);
312 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
313 return 0;
314 }
315
316 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
317 {
318 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
319 int map;
320 unsigned char ioctl, addr, enable;
321
322 map = io->map;
323
324 if (map > 1)
325 return -EINVAL;
326
327 enable = I365_ENA_IO(map);
328 addr = exca_readb(socket, I365_ADDRWIN);
329
330 /* Disable the window before changing it.. */
331 if (addr & enable) {
332 addr &= ~enable;
333 exca_writeb(socket, I365_ADDRWIN, addr);
334 }
335
336 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
337 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
338
339 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
340 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
341 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
342 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
343 exca_writeb(socket, I365_IOCTL, ioctl);
344
345 if (io->flags & MAP_ACTIVE)
346 exca_writeb(socket, I365_ADDRWIN, addr | enable);
347 return 0;
348 }
349
350 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
351 {
352 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
353 struct pci_bus_region region;
354 int map;
355 unsigned char addr, enable;
356 unsigned int start, stop, card_start;
357 unsigned short word;
358
359 pcibios_resource_to_bus(socket->dev, ®ion, mem->res);
360
361 map = mem->map;
362 start = region.start;
363 stop = region.end;
364 card_start = mem->card_start;
365
366 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
367 (card_start >> 26) || mem->speed > 1000)
368 return -EINVAL;
369
370 enable = I365_ENA_MEM(map);
371 addr = exca_readb(socket, I365_ADDRWIN);
372 if (addr & enable) {
373 addr &= ~enable;
374 exca_writeb(socket, I365_ADDRWIN, addr);
375 }
376
377 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
378
379 word = (start >> 12) & 0x0fff;
380 if (mem->flags & MAP_16BIT)
381 word |= I365_MEM_16BIT;
382 if (mem->flags & MAP_0WS)
383 word |= I365_MEM_0WS;
384 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
385
386 word = (stop >> 12) & 0x0fff;
387 switch (to_cycles(mem->speed)) {
388 case 0: break;
389 case 1: word |= I365_MEM_WS0; break;
390 case 2: word |= I365_MEM_WS1; break;
391 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
392 }
393 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
394
395 word = ((card_start - start) >> 12) & 0x3fff;
396 if (mem->flags & MAP_WRPROT)
397 word |= I365_MEM_WRPROT;
398 if (mem->flags & MAP_ATTRIB)
399 word |= I365_MEM_REG;
400 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
401
402 if (mem->flags & MAP_ACTIVE)
403 exca_writeb(socket, I365_ADDRWIN, addr | enable);
404 return 0;
405 }
406
407
408 static unsigned int yenta_events(struct yenta_socket *socket)
409 {
410 u8 csc;
411 u32 cb_event;
412 unsigned int events;
413
414 /* Clear interrupt status for the event */
415 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
416 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
417
418 csc = exca_readb(socket, I365_CSC);
419
420 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
421 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
422 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
423 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
424 } else {
425 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
426 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
427 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
428 }
429 return events;
430 }
431
432
433 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
434 {
435 unsigned int events;
436 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
437
438 events = yenta_events(socket);
439 if (events) {
440 pcmcia_parse_events(&socket->socket, events);
441 return IRQ_HANDLED;
442 }
443 return IRQ_NONE;
444 }
445
446 static void yenta_interrupt_wrapper(unsigned long data)
447 {
448 struct yenta_socket *socket = (struct yenta_socket *) data;
449
450 yenta_interrupt(0, (void *)socket, NULL);
451 socket->poll_timer.expires = jiffies + HZ;
452 add_timer(&socket->poll_timer);
453 }
454
455 static void yenta_clear_maps(struct yenta_socket *socket)
456 {
457 int i;
458 struct resource res = { .start = 0, .end = 0x0fff };
459 pccard_io_map io = { 0, 0, 0, 0, 1 };
460 pccard_mem_map mem = { .res = &res, };
461
462 yenta_set_socket(&socket->socket, &dead_socket);
463 for (i = 0; i < 2; i++) {
464 io.map = i;
465 yenta_set_io_map(&socket->socket, &io);
466 }
467 for (i = 0; i < 5; i++) {
468 mem.map = i;
469 yenta_set_mem_map(&socket->socket, &mem);
470 }
471 }
472
473 /* Called at resume and initialization events */
474 static int yenta_sock_init(struct pcmcia_socket *sock)
475 {
476 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
477 u32 state;
478 u16 bridge;
479
480 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
481 if (!socket->cb_irq)
482 bridge |= CB_BRIDGE_INTR;
483 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
484
485 exca_writeb(socket, I365_GBLCTL, 0x00);
486 exca_writeb(socket, I365_GENCTL, 0x00);
487
488 /* Redo card voltage interrogation */
489 state = cb_readl(socket, CB_SOCKET_STATE);
490 if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD |
491 CB_3VCARD | CB_XVCARD | CB_YVCARD)))
492 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
493
494 yenta_clear_maps(socket);
495
496 if (socket->type && socket->type->sock_init)
497 socket->type->sock_init(socket);
498
499 /* Re-enable CSC interrupts */
500 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
501
502 return 0;
503 }
504
505 static int yenta_sock_suspend(struct pcmcia_socket *sock)
506 {
507 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
508
509 yenta_set_socket(sock, &dead_socket);
510
511 /* Disable CSC interrupts */
512 cb_writel(socket, CB_SOCKET_MASK, 0x0);
513
514 return 0;
515 }
516
517 /*
518 * Use an adaptive allocation for the memory resource,
519 * sometimes the memory behind pci bridges is limited:
520 * 1/8 of the size of the io window of the parent.
521 * max 4 MB, min 16 kB.
522 */
523 #define BRIDGE_MEM_MAX 4*1024*1024
524 #define BRIDGE_MEM_MIN 16*1024
525
526 #define BRIDGE_IO_MAX 256
527 #define BRIDGE_IO_MIN 32
528
529 #ifndef PCIBIOS_MIN_CARDBUS_IO
530 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
531 #endif
532
533 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type)
534 {
535 struct pci_bus *bus;
536 struct resource *root, *res;
537 u32 start, end;
538 u32 align, size, min;
539 unsigned offset;
540 unsigned mask;
541
542 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
543 mask = ~0xfff;
544 if (type & IORESOURCE_IO)
545 mask = ~3;
546
547 offset = 0x1c + 8*nr;
548 bus = socket->dev->subordinate;
549 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
550 res->name = bus->name;
551 res->flags = type;
552 res->start = 0;
553 res->end = 0;
554 root = pci_find_parent_resource(socket->dev, res);
555
556 if (!root)
557 return;
558
559 start = config_readl(socket, offset) & mask;
560 end = config_readl(socket, offset+4) | ~mask;
561 if (start && end > start && !override_bios) {
562 res->start = start;
563 res->end = end;
564 if (request_resource(root, res) == 0)
565 return;
566 printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n",
567 pci_name(socket->dev), nr);
568 res->start = res->end = 0;
569 }
570
571 if (type & IORESOURCE_IO) {
572 align = 1024;
573 size = BRIDGE_IO_MAX;
574 min = BRIDGE_IO_MIN;
575 start = PCIBIOS_MIN_CARDBUS_IO;
576 end = ~0U;
577 } else {
578 unsigned long avail = root->end - root->start;
579 int i;
580 size = BRIDGE_MEM_MAX;
581 if (size > avail/8) {
582 size=(avail+1)/8;
583 /* round size down to next power of 2 */
584 i = 0;
585 while ((size /= 2) != 0)
586 i++;
587 size = 1 << i;
588 }
589 if (size < BRIDGE_MEM_MIN)
590 size = BRIDGE_MEM_MIN;
591 min = BRIDGE_MEM_MIN;
592 align = size;
593 start = PCIBIOS_MIN_MEM;
594 end = ~0U;
595 }
596
597 do {
598 if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) {
599 config_writel(socket, offset, res->start);
600 config_writel(socket, offset+4, res->end);
601 return;
602 }
603 size = size/2;
604 align = size;
605 } while (size >= min);
606 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
607 pci_name(socket->dev), type);
608 res->start = res->end = 0;
609 }
610
611 /*
612 * Allocate the bridge mappings for the device..
613 */
614 static void yenta_allocate_resources(struct yenta_socket *socket)
615 {
616 yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH);
617 yenta_allocate_res(socket, 1, IORESOURCE_MEM);
618 yenta_allocate_res(socket, 2, IORESOURCE_IO);
619 yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */
620 }
621
622
623 /*
624 * Free the bridge mappings for the device..
625 */
626 static void yenta_free_resources(struct yenta_socket *socket)
627 {
628 int i;
629 for (i=0;i<4;i++) {
630 struct resource *res;
631 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
632 if (res->start != 0 && res->end != 0)
633 release_resource(res);
634 res->start = res->end = 0;
635 }
636 }
637
638
639 /*
640 * Close it down - release our resources and go home..
641 */
642 static void yenta_close(struct pci_dev *dev)
643 {
644 struct yenta_socket *sock = pci_get_drvdata(dev);
645
646 /* we don't want a dying socket registered */
647 pcmcia_unregister_socket(&sock->socket);
648
649 /* Disable all events so we don't die in an IRQ storm */
650 cb_writel(sock, CB_SOCKET_MASK, 0x0);
651 exca_writeb(sock, I365_CSCINT, 0);
652
653 if (sock->cb_irq)
654 free_irq(sock->cb_irq, sock);
655 else
656 del_timer_sync(&sock->poll_timer);
657
658 if (sock->base)
659 iounmap(sock->base);
660 yenta_free_resources(sock);
661
662 pci_release_regions(dev);
663 pci_disable_device(dev);
664 pci_set_drvdata(dev, NULL);
665 }
666
667
668 static struct pccard_operations yenta_socket_operations = {
669 .init = yenta_sock_init,
670 .suspend = yenta_sock_suspend,
671 .get_status = yenta_get_status,
672 .get_socket = yenta_get_socket,
673 .set_socket = yenta_set_socket,
674 .set_io_map = yenta_set_io_map,
675 .set_mem_map = yenta_set_mem_map,
676 };
677
678
679 #include "ti113x.h"
680 #include "ricoh.h"
681 #include "topic.h"
682 #include "o2micro.h"
683
684 enum {
685 CARDBUS_TYPE_DEFAULT = -1,
686 CARDBUS_TYPE_TI,
687 CARDBUS_TYPE_TI113X,
688 CARDBUS_TYPE_TI12XX,
689 CARDBUS_TYPE_TI1250,
690 CARDBUS_TYPE_RICOH,
691 CARDBUS_TYPE_TOPIC97,
692 CARDBUS_TYPE_O2MICRO,
693 };
694
695 /*
696 * Different cardbus controllers have slightly different
697 * initialization sequences etc details. List them here..
698 */
699 static struct cardbus_type cardbus_type[] = {
700 [CARDBUS_TYPE_TI] = {
701 .override = ti_override,
702 .save_state = ti_save_state,
703 .restore_state = ti_restore_state,
704 .sock_init = ti_init,
705 },
706 [CARDBUS_TYPE_TI113X] = {
707 .override = ti113x_override,
708 .save_state = ti_save_state,
709 .restore_state = ti_restore_state,
710 .sock_init = ti_init,
711 },
712 [CARDBUS_TYPE_TI12XX] = {
713 .override = ti12xx_override,
714 .save_state = ti_save_state,
715 .restore_state = ti_restore_state,
716 .sock_init = ti_init,
717 },
718 [CARDBUS_TYPE_TI1250] = {
719 .override = ti1250_override,
720 .save_state = ti_save_state,
721 .restore_state = ti_restore_state,
722 .sock_init = ti_init,
723 },
724 [CARDBUS_TYPE_RICOH] = {
725 .override = ricoh_override,
726 .save_state = ricoh_save_state,
727 .restore_state = ricoh_restore_state,
728 },
729 [CARDBUS_TYPE_TOPIC97] = {
730 .override = topic97_override,
731 },
732 [CARDBUS_TYPE_O2MICRO] = {
733 .override = o2micro_override,
734 .restore_state = o2micro_restore_state,
735 },
736 };
737
738
739 /*
740 * Only probe "regular" interrupts, don't
741 * touch dangerous spots like the mouse irq,
742 * because there are mice that apparently
743 * get really confused if they get fondled
744 * too intimately.
745 *
746 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
747 */
748 static u32 isa_interrupts = 0x0ef8;
749
750 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
751 {
752 int i;
753 unsigned long val;
754 u16 bridge_ctrl;
755 u32 mask;
756
757 /* Set up ISA irq routing to probe the ISA irqs.. */
758 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
759 if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
760 bridge_ctrl |= CB_BRIDGE_INTR;
761 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
762 }
763
764 /*
765 * Probe for usable interrupts using the force
766 * register to generate bogus card status events.
767 */
768 cb_writel(socket, CB_SOCKET_EVENT, -1);
769 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
770 exca_writeb(socket, I365_CSCINT, 0);
771 val = probe_irq_on() & isa_irq_mask;
772 for (i = 1; i < 16; i++) {
773 if (!((val >> i) & 1))
774 continue;
775 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
776 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
777 udelay(100);
778 cb_writel(socket, CB_SOCKET_EVENT, -1);
779 }
780 cb_writel(socket, CB_SOCKET_MASK, 0);
781 exca_writeb(socket, I365_CSCINT, 0);
782
783 mask = probe_irq_mask(val) & 0xffff;
784
785 bridge_ctrl &= ~CB_BRIDGE_INTR;
786 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
787
788 return mask;
789 }
790
791
792 /* interrupt handler, only used during probing */
793 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
794 {
795 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
796 u8 csc;
797 u32 cb_event;
798
799 /* Clear interrupt status for the event */
800 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
801 cb_writel(socket, CB_SOCKET_EVENT, -1);
802 csc = exca_readb(socket, I365_CSC);
803
804 if (cb_event || csc) {
805 socket->probe_status = 1;
806 return IRQ_HANDLED;
807 }
808
809 return IRQ_NONE;
810 }
811
812 /* probes the PCI interrupt, use only on override functions */
813 static int yenta_probe_cb_irq(struct yenta_socket *socket)
814 {
815 u16 bridge_ctrl;
816
817 if (!socket->cb_irq)
818 return -1;
819
820 socket->probe_status = 0;
821
822 /* disable ISA interrupts */
823 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
824 bridge_ctrl &= ~CB_BRIDGE_INTR;
825 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
826
827 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
828 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
829 return -1;
830 }
831
832 /* generate interrupt, wait */
833 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
834 cb_writel(socket, CB_SOCKET_EVENT, -1);
835 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
836 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
837
838 msleep(100);
839
840 /* disable interrupts */
841 cb_writel(socket, CB_SOCKET_MASK, 0);
842 exca_writeb(socket, I365_CSCINT, 0);
843 cb_writel(socket, CB_SOCKET_EVENT, -1);
844 exca_readb(socket, I365_CSC);
845
846 free_irq(socket->cb_irq, socket);
847
848 return (int) socket->probe_status;
849 }
850
851
852
853 /*
854 * Set static data that doesn't need re-initializing..
855 */
856 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
857 {
858 socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
859 socket->socket.map_size = 0x1000;
860 socket->socket.pci_irq = socket->cb_irq;
861 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
862 socket->socket.cb_dev = socket->dev;
863
864 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
865 socket->socket.irq_mask, socket->cb_irq);
866 }
867
868 /*
869 * Initialize the standard cardbus registers
870 */
871 static void yenta_config_init(struct yenta_socket *socket)
872 {
873 u16 bridge;
874 struct pci_dev *dev = socket->dev;
875
876 pci_set_power_state(socket->dev, 0);
877
878 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
879 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start);
880 config_writew(socket, PCI_COMMAND,
881 PCI_COMMAND_IO |
882 PCI_COMMAND_MEMORY |
883 PCI_COMMAND_MASTER |
884 PCI_COMMAND_WAIT);
885
886 /* MAGIC NUMBERS! Fixme */
887 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
888 config_writeb(socket, PCI_LATENCY_TIMER, 168);
889 config_writel(socket, PCI_PRIMARY_BUS,
890 (176 << 24) | /* sec. latency timer */
891 (dev->subordinate->subordinate << 16) | /* subordinate bus */
892 (dev->subordinate->secondary << 8) | /* secondary bus */
893 dev->subordinate->primary); /* primary bus */
894
895 /*
896 * Set up the bridging state:
897 * - enable write posting.
898 * - memory window 0 prefetchable, window 1 non-prefetchable
899 * - PCI interrupts enabled if a PCI interrupt exists..
900 */
901 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
902 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
903 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
904 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
905 }
906
907 /*
908 * Initialize a cardbus controller. Make sure we have a usable
909 * interrupt, and that we can map the cardbus area. Fill in the
910 * socket information structure..
911 */
912 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
913 {
914 struct yenta_socket *socket;
915 int ret;
916
917 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
918 if (!socket)
919 return -ENOMEM;
920 memset(socket, 0, sizeof(*socket));
921
922 /* prepare pcmcia_socket */
923 socket->socket.ops = ¥ta_socket_operations;
924 socket->socket.resource_ops = &pccard_nonstatic_ops;
925 socket->socket.dev.dev = &dev->dev;
926 socket->socket.driver_data = socket;
927 socket->socket.owner = THIS_MODULE;
928
929 /* prepare struct yenta_socket */
930 socket->dev = dev;
931 pci_set_drvdata(dev, socket);
932
933 /*
934 * Do some basic sanity checking..
935 */
936 if (pci_enable_device(dev)) {
937 ret = -EBUSY;
938 goto free;
939 }
940
941 ret = pci_request_regions(dev, "yenta_socket");
942 if (ret)
943 goto disable;
944
945 if (!pci_resource_start(dev, 0)) {
946 printk(KERN_ERR "No cardbus resource!\n");
947 ret = -ENODEV;
948 goto release;
949 }
950
951 /*
952 * Ok, start setup.. Map the cardbus registers,
953 * and request the IRQ.
954 */
955 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
956 if (!socket->base) {
957 ret = -ENOMEM;
958 goto release;
959 }
960
961 /*
962 * report the subsystem vendor and device for help debugging
963 * the irq stuff...
964 */
965 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
966 dev->slot_name, dev->subsystem_vendor, dev->subsystem_device);
967
968 yenta_config_init(socket);
969
970 /* Disable all events */
971 cb_writel(socket, CB_SOCKET_MASK, 0x0);
972
973 /* Set up the bridge regions.. */
974 yenta_allocate_resources(socket);
975
976 socket->cb_irq = dev->irq;
977
978 /* Do we have special options for the device? */
979 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
980 id->driver_data < ARRAY_SIZE(cardbus_type)) {
981 socket->type = &cardbus_type[id->driver_data];
982
983 ret = socket->type->override(socket);
984 if (ret < 0)
985 goto unmap;
986 }
987
988 /* We must finish initialization here */
989
990 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
991 /* No IRQ or request_irq failed. Poll */
992 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
993 init_timer(&socket->poll_timer);
994 socket->poll_timer.function = yenta_interrupt_wrapper;
995 socket->poll_timer.data = (unsigned long)socket;
996 socket->poll_timer.expires = jiffies + HZ;
997 add_timer(&socket->poll_timer);
998 }
999
1000 /* Figure out what the dang thing can do for the PCMCIA layer... */
1001 yenta_get_socket_capabilities(socket, isa_interrupts);
1002 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1003
1004 /* Register it with the pcmcia layer.. */
1005 ret = pcmcia_register_socket(&socket->socket);
1006 if (ret == 0)
1007 goto out;
1008
1009 unmap:
1010 iounmap(socket->base);
1011 release:
1012 pci_release_regions(dev);
1013 disable:
1014 pci_disable_device(dev);
1015 free:
1016 kfree(socket);
1017 out:
1018 return ret;
1019 }
1020
1021
1022 static int yenta_dev_suspend (struct pci_dev *dev, u32 state)
1023 {
1024 struct yenta_socket *socket = pci_get_drvdata(dev);
1025 int ret;
1026
1027 ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1028
1029 if (socket) {
1030 if (socket->type && socket->type->save_state)
1031 socket->type->save_state(socket);
1032
1033 /* FIXME: pci_save_state needs to have a better interface */
1034 pci_save_state(dev);
1035 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
1036 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
1037
1038 /*
1039 * Some laptops (IBM T22) do not like us putting the Cardbus
1040 * bridge into D3. At a guess, some other laptop will
1041 * probably require this, so leave it commented out for now.
1042 */
1043 /* pci_set_power_state(dev, 3); */
1044 }
1045
1046 return ret;
1047 }
1048
1049
1050 static int yenta_dev_resume (struct pci_dev *dev)
1051 {
1052 struct yenta_socket *socket = pci_get_drvdata(dev);
1053
1054 if (socket) {
1055 pci_set_power_state(dev, 0);
1056 /* FIXME: pci_restore_state needs to have a better interface */
1057 pci_restore_state(dev);
1058 pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
1059 pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
1060
1061 if (socket->type && socket->type->restore_state)
1062 socket->type->restore_state(socket);
1063 }
1064
1065 return pcmcia_socket_dev_resume(&dev->dev);
1066 }
1067
1068
1069 #define CB_ID(vend,dev,type) \
1070 { \
1071 .vendor = vend, \
1072 .device = dev, \
1073 .subvendor = PCI_ANY_ID, \
1074 .subdevice = PCI_ANY_ID, \
1075 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1076 .class_mask = ~0, \
1077 .driver_data = CARDBUS_TYPE_##type, \
1078 }
1079
1080 static struct pci_device_id yenta_table [] = {
1081 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1082
1083 /*
1084 * TBD: Check if these TI variants can use more
1085 * advanced overrides instead. (I can't get the
1086 * data sheets for these devices. --rmk)
1087 */
1088 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1089
1090 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1091 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1092
1093 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1094 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1095 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1096 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1097 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1098 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1099 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1100 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1101 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1102 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1103 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1104 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1105 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1106 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1107 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1108 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1109
1110 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1111 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1112
1113 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
1114 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
1115 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
1116 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
1117
1118 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1119 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1120 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1121 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1122 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1123
1124 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1125 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1126
1127 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1128
1129 /* match any cardbus bridge */
1130 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1131 { /* all zeroes */ }
1132 };
1133 MODULE_DEVICE_TABLE(pci, yenta_table);
1134
1135
1136 static struct pci_driver yenta_cardbus_driver = {
1137 .name = "yenta_cardbus",
1138 .id_table = yenta_table,
1139 .probe = yenta_probe,
1140 .remove = __devexit_p(yenta_close),
1141 .suspend = yenta_dev_suspend,
1142 .resume = yenta_dev_resume,
1143 };
1144
1145
1146 static int __init yenta_socket_init(void)
1147 {
1148 return pci_register_driver (¥ta_cardbus_driver);
1149 }
1150
1151
1152 static void __exit yenta_socket_exit (void)
1153 {
1154 pci_unregister_driver (¥ta_cardbus_driver);
1155 }
1156
1157
1158 module_init(yenta_socket_init);
1159 module_exit(yenta_socket_exit);
1160
1161 MODULE_LICENSE("GPL");
1162
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