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[PATCH] hvc_console: Add missing include
[linux-2.6/mini2440.git] / drivers / pcmcia / yenta_socket.c
blob02b23abc2df143edfac93a8985b6f1e9dc8084dd
1 /*
2 * Regular cardbus driver ("yenta_socket")
3 *
4 * (C) Copyright 1999, 2000 Linus Torvalds
5 *
6 * Changelog:
7 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
8 * Dynamically adjust the size of the bridge resource
9 *
10 * May 2003: Dominik Brodowski <linux@brodo.de>
11 * Merge pci_socket.c and yenta.c into one file
12 */
13 #include <linux/init.h>
14 #include <linux/pci.h>
15 #include <linux/sched.h>
16 #include <linux/workqueue.h>
17 #include <linux/interrupt.h>
18 #include <linux/delay.h>
19 #include <linux/module.h>
20
21 #include <pcmcia/version.h>
22 #include <pcmcia/cs_types.h>
23 #include <pcmcia/ss.h>
24 #include <pcmcia/cs.h>
25
26 #include <asm/io.h>
27
28 #include "yenta_socket.h"
29 #include "i82365.h"
30
31 static int disable_clkrun;
32 module_param(disable_clkrun, bool, 0444);
33 MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
34
35 static int isa_probe = 1;
36 module_param(isa_probe, bool, 0444);
37 MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
38
39 static int pwr_irqs_off;
40 module_param(pwr_irqs_off, bool, 0644);
41 MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
42
43 #if 0
44 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
45 #else
46 #define debug(x,args...)
47 #endif
48
49 /* Don't ask.. */
50 #define to_cycles(ns) ((ns)/120)
51 #define to_ns(cycles) ((cycles)*120)
52
53 static int yenta_probe_cb_irq(struct yenta_socket *socket);
54
55
56 static unsigned int override_bios;
57 module_param(override_bios, uint, 0000);
58 MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation");
59
60 /*
61 * Generate easy-to-use ways of reading a cardbus sockets
62 * regular memory space ("cb_xxx"), configuration space
63 * ("config_xxx") and compatibility space ("exca_xxxx")
64 */
65 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
66 {
67 u32 val = readl(socket->base + reg);
68 debug("%p %04x %08x\n", socket, reg, val);
69 return val;
70 }
71
72 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
73 {
74 debug("%p %04x %08x\n", socket, reg, val);
75 writel(val, socket->base + reg);
76 }
77
78 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
79 {
80 u8 val;
81 pci_read_config_byte(socket->dev, offset, &val);
82 debug("%p %04x %02x\n", socket, offset, val);
83 return val;
84 }
85
86 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
87 {
88 u16 val;
89 pci_read_config_word(socket->dev, offset, &val);
90 debug("%p %04x %04x\n", socket, offset, val);
91 return val;
92 }
93
94 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
95 {
96 u32 val;
97 pci_read_config_dword(socket->dev, offset, &val);
98 debug("%p %04x %08x\n", socket, offset, val);
99 return val;
100 }
101
102 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
103 {
104 debug("%p %04x %02x\n", socket, offset, val);
105 pci_write_config_byte(socket->dev, offset, val);
106 }
107
108 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
109 {
110 debug("%p %04x %04x\n", socket, offset, val);
111 pci_write_config_word(socket->dev, offset, val);
112 }
113
114 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
115 {
116 debug("%p %04x %08x\n", socket, offset, val);
117 pci_write_config_dword(socket->dev, offset, val);
118 }
119
120 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
121 {
122 u8 val = readb(socket->base + 0x800 + reg);
123 debug("%p %04x %02x\n", socket, reg, val);
124 return val;
125 }
126
127 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
128 {
129 u16 val;
130 val = readb(socket->base + 0x800 + reg);
131 val |= readb(socket->base + 0x800 + reg + 1) << 8;
132 debug("%p %04x %04x\n", socket, reg, val);
133 return val;
134 }
135
136 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
137 {
138 debug("%p %04x %02x\n", socket, reg, val);
139 writeb(val, socket->base + 0x800 + reg);
140 }
141
142 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
143 {
144 debug("%p %04x %04x\n", socket, reg, val);
145 writeb(val, socket->base + 0x800 + reg);
146 writeb(val >> 8, socket->base + 0x800 + reg + 1);
147 }
148
149 /*
150 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
151 * on what kind of card is inserted..
152 */
153 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
154 {
155 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
156 unsigned int val;
157 u32 state = cb_readl(socket, CB_SOCKET_STATE);
158
159 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
160 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
161 val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
162 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
163
164
165 if (state & CB_CBCARD) {
166 val |= SS_CARDBUS;
167 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
168 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
169 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
170 } else if (state & CB_16BITCARD) {
171 u8 status = exca_readb(socket, I365_STATUS);
172 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
173 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
174 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
175 } else {
176 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
177 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
178 }
179 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
180 val |= (status & I365_CS_READY) ? SS_READY : 0;
181 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
182 }
183
184 *value = val;
185 return 0;
186 }
187
188 static int yenta_Vcc_power(u32 control)
189 {
190 switch (control & CB_SC_VCC_MASK) {
191 case CB_SC_VCC_5V: return 50;
192 case CB_SC_VCC_3V: return 33;
193 default: return 0;
194 }
195 }
196
197 static int yenta_Vpp_power(u32 control)
198 {
199 switch (control & CB_SC_VPP_MASK) {
200 case CB_SC_VPP_12V: return 120;
201 case CB_SC_VPP_5V: return 50;
202 case CB_SC_VPP_3V: return 33;
203 default: return 0;
204 }
205 }
206
207 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
208 {
209 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
210 u8 reg;
211 u32 control;
212
213 control = cb_readl(socket, CB_SOCKET_CONTROL);
214
215 state->Vcc = yenta_Vcc_power(control);
216 state->Vpp = yenta_Vpp_power(control);
217 state->io_irq = socket->io_irq;
218
219 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
220 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
221 if (bridge & CB_BRIDGE_CRST)
222 state->flags |= SS_RESET;
223 return 0;
224 }
225
226 /* 16-bit card state.. */
227 reg = exca_readb(socket, I365_POWER);
228 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
229 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
230
231 reg = exca_readb(socket, I365_INTCTL);
232 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
233 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
234
235 reg = exca_readb(socket, I365_CSCINT);
236 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
237 if (state->flags & SS_IOCARD) {
238 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
239 } else {
240 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
241 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
242 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
243 }
244
245 return 0;
246 }
247
248 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
249 {
250 u32 reg = 0; /* CB_SC_STPCLK? */
251 switch (state->Vcc) {
252 case 33: reg = CB_SC_VCC_3V; break;
253 case 50: reg = CB_SC_VCC_5V; break;
254 default: reg = 0; break;
255 }
256 switch (state->Vpp) {
257 case 33: reg |= CB_SC_VPP_3V; break;
258 case 50: reg |= CB_SC_VPP_5V; break;
259 case 120: reg |= CB_SC_VPP_12V; break;
260 }
261 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
262 cb_writel(socket, CB_SOCKET_CONTROL, reg);
263 }
264
265 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
266 {
267 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
268 u16 bridge;
269
270 yenta_set_power(socket, state);
271 socket->io_irq = state->io_irq;
272 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
273 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
274 u8 intr;
275 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
276
277 /* ISA interrupt control? */
278 intr = exca_readb(socket, I365_INTCTL);
279 intr = (intr & ~0xf);
280 if (!socket->cb_irq) {
281 intr |= state->io_irq;
282 bridge |= CB_BRIDGE_INTR;
283 }
284 exca_writeb(socket, I365_INTCTL, intr);
285 } else {
286 u8 reg;
287
288 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
289 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
290 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
291 if (state->io_irq != socket->cb_irq) {
292 reg |= state->io_irq;
293 bridge |= CB_BRIDGE_INTR;
294 }
295 exca_writeb(socket, I365_INTCTL, reg);
296
297 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
298 reg |= I365_PWR_NORESET;
299 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
300 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
301 if (exca_readb(socket, I365_POWER) != reg)
302 exca_writeb(socket, I365_POWER, reg);
303
304 /* CSC interrupt: no ISA irq for CSC */
305 reg = I365_CSC_DETECT;
306 if (state->flags & SS_IOCARD) {
307 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
308 } else {
309 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
310 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
311 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
312 }
313 exca_writeb(socket, I365_CSCINT, reg);
314 exca_readb(socket, I365_CSC);
315 if(sock->zoom_video)
316 sock->zoom_video(sock, state->flags & SS_ZVCARD);
317 }
318 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
319 /* Socket event mask: get card insert/remove events.. */
320 cb_writel(socket, CB_SOCKET_EVENT, -1);
321 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
322 return 0;
323 }
324
325 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
326 {
327 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
328 int map;
329 unsigned char ioctl, addr, enable;
330
331 map = io->map;
332
333 if (map > 1)
334 return -EINVAL;
335
336 enable = I365_ENA_IO(map);
337 addr = exca_readb(socket, I365_ADDRWIN);
338
339 /* Disable the window before changing it.. */
340 if (addr & enable) {
341 addr &= ~enable;
342 exca_writeb(socket, I365_ADDRWIN, addr);
343 }
344
345 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
346 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
347
348 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
349 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
350 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
351 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
352 exca_writeb(socket, I365_IOCTL, ioctl);
353
354 if (io->flags & MAP_ACTIVE)
355 exca_writeb(socket, I365_ADDRWIN, addr | enable);
356 return 0;
357 }
358
359 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
360 {
361 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
362 struct pci_bus_region region;
363 int map;
364 unsigned char addr, enable;
365 unsigned int start, stop, card_start;
366 unsigned short word;
367
368 pcibios_resource_to_bus(socket->dev, &region, mem->res);
369
370 map = mem->map;
371 start = region.start;
372 stop = region.end;
373 card_start = mem->card_start;
374
375 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
376 (card_start >> 26) || mem->speed > 1000)
377 return -EINVAL;
378
379 enable = I365_ENA_MEM(map);
380 addr = exca_readb(socket, I365_ADDRWIN);
381 if (addr & enable) {
382 addr &= ~enable;
383 exca_writeb(socket, I365_ADDRWIN, addr);
384 }
385
386 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
387
388 word = (start >> 12) & 0x0fff;
389 if (mem->flags & MAP_16BIT)
390 word |= I365_MEM_16BIT;
391 if (mem->flags & MAP_0WS)
392 word |= I365_MEM_0WS;
393 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
394
395 word = (stop >> 12) & 0x0fff;
396 switch (to_cycles(mem->speed)) {
397 case 0: break;
398 case 1: word |= I365_MEM_WS0; break;
399 case 2: word |= I365_MEM_WS1; break;
400 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
401 }
402 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
403
404 word = ((card_start - start) >> 12) & 0x3fff;
405 if (mem->flags & MAP_WRPROT)
406 word |= I365_MEM_WRPROT;
407 if (mem->flags & MAP_ATTRIB)
408 word |= I365_MEM_REG;
409 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
410
411 if (mem->flags & MAP_ACTIVE)
412 exca_writeb(socket, I365_ADDRWIN, addr | enable);
413 return 0;
414 }
415
416
417
418 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
419 {
420 unsigned int events;
421 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
422 u8 csc;
423 u32 cb_event;
424
425 /* Clear interrupt status for the event */
426 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
427 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
428
429 csc = exca_readb(socket, I365_CSC);
430
431 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
432 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
433 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
434 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
435 } else {
436 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
437 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
438 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
439 }
440
441 if (events)
442 pcmcia_parse_events(&socket->socket, events);
443
444 if (cb_event || csc)
445 return IRQ_HANDLED;
446
447 return IRQ_NONE;
448 }
449
450 static void yenta_interrupt_wrapper(unsigned long data)
451 {
452 struct yenta_socket *socket = (struct yenta_socket *) data;
453
454 yenta_interrupt(0, (void *)socket, NULL);
455 socket->poll_timer.expires = jiffies + HZ;
456 add_timer(&socket->poll_timer);
457 }
458
459 static void yenta_clear_maps(struct yenta_socket *socket)
460 {
461 int i;
462 struct resource res = { .start = 0, .end = 0x0fff };
463 pccard_io_map io = { 0, 0, 0, 0, 1 };
464 pccard_mem_map mem = { .res = &res, };
465
466 yenta_set_socket(&socket->socket, &dead_socket);
467 for (i = 0; i < 2; i++) {
468 io.map = i;
469 yenta_set_io_map(&socket->socket, &io);
470 }
471 for (i = 0; i < 5; i++) {
472 mem.map = i;
473 yenta_set_mem_map(&socket->socket, &mem);
474 }
475 }
476
477 /* redoes voltage interrogation if required */
478 static void yenta_interrogate(struct yenta_socket *socket)
479 {
480 u32 state;
481
482 state = cb_readl(socket, CB_SOCKET_STATE);
483 if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
484 (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
485 ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
486 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
487 }
488
489 /* Called at resume and initialization events */
490 static int yenta_sock_init(struct pcmcia_socket *sock)
491 {
492 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
493 u16 bridge;
494
495 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
496 if (!socket->cb_irq)
497 bridge |= CB_BRIDGE_INTR;
498 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
499
500 exca_writeb(socket, I365_GBLCTL, 0x00);
501 exca_writeb(socket, I365_GENCTL, 0x00);
502
503 /* Redo card voltage interrogation */
504 yenta_interrogate(socket);
505
506 yenta_clear_maps(socket);
507
508 if (socket->type && socket->type->sock_init)
509 socket->type->sock_init(socket);
510
511 /* Re-enable CSC interrupts */
512 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
513
514 return 0;
515 }
516
517 static int yenta_sock_suspend(struct pcmcia_socket *sock)
518 {
519 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
520
521 /* Disable CSC interrupts */
522 cb_writel(socket, CB_SOCKET_MASK, 0x0);
523
524 return 0;
525 }
526
527 /*
528 * Use an adaptive allocation for the memory resource,
529 * sometimes the memory behind pci bridges is limited:
530 * 1/8 of the size of the io window of the parent.
531 * max 4 MB, min 16 kB.
532 */
533 #define BRIDGE_MEM_MAX 4*1024*1024
534 #define BRIDGE_MEM_MIN 16*1024
535
536 #define BRIDGE_IO_MAX 256
537 #define BRIDGE_IO_MIN 32
538
539 #ifndef PCIBIOS_MIN_CARDBUS_IO
540 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
541 #endif
542
543 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type)
544 {
545 struct pci_bus *bus;
546 struct resource *root, *res;
547 u32 start, end;
548 u32 align, size, min;
549 unsigned offset;
550 unsigned mask;
551
552 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
553 /* Already allocated? */
554 if (res->parent)
555 return 0;
556
557 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
558 mask = ~0xfff;
559 if (type & IORESOURCE_IO)
560 mask = ~3;
561
562 offset = 0x1c + 8*nr;
563 bus = socket->dev->subordinate;
564 res->name = bus->name;
565 res->flags = type;
566 res->start = 0;
567 res->end = 0;
568 root = pci_find_parent_resource(socket->dev, res);
569
570 if (!root)
571 return;
572
573 start = config_readl(socket, offset) & mask;
574 end = config_readl(socket, offset+4) | ~mask;
575 if (start && end > start && !override_bios) {
576 res->start = start;
577 res->end = end;
578 if (request_resource(root, res) == 0)
579 return;
580 printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n",
581 pci_name(socket->dev), nr);
582 res->start = res->end = 0;
583 }
584
585 if (type & IORESOURCE_IO) {
586 align = 1024;
587 size = BRIDGE_IO_MAX;
588 min = BRIDGE_IO_MIN;
589 start = PCIBIOS_MIN_CARDBUS_IO;
590 end = ~0U;
591 } else {
592 unsigned long avail = root->end - root->start;
593 int i;
594 size = BRIDGE_MEM_MAX;
595 if (size > avail/8) {
596 size=(avail+1)/8;
597 /* round size down to next power of 2 */
598 i = 0;
599 while ((size /= 2) != 0)
600 i++;
601 size = 1 << i;
602 }
603 if (size < BRIDGE_MEM_MIN)
604 size = BRIDGE_MEM_MIN;
605 min = BRIDGE_MEM_MIN;
606 align = size;
607 start = PCIBIOS_MIN_MEM;
608 end = ~0U;
609 }
610
611 do {
612 if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) {
613 config_writel(socket, offset, res->start);
614 config_writel(socket, offset+4, res->end);
615 return;
616 }
617 size = size/2;
618 align = size;
619 } while (size >= min);
620 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
621 pci_name(socket->dev), type);
622 res->start = res->end = 0;
623 }
624
625 /*
626 * Allocate the bridge mappings for the device..
627 */
628 static void yenta_allocate_resources(struct yenta_socket *socket)
629 {
630 yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH);
631 yenta_allocate_res(socket, 1, IORESOURCE_MEM);
632 yenta_allocate_res(socket, 2, IORESOURCE_IO);
633 yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */
634 }
635
636
637 /*
638 * Free the bridge mappings for the device..
639 */
640 static void yenta_free_resources(struct yenta_socket *socket)
641 {
642 int i;
643 for (i=0;i<4;i++) {
644 struct resource *res;
645 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
646 if (res->start != 0 && res->end != 0)
647 release_resource(res);
648 res->start = res->end = 0;
649 }
650 }
651
652
653 /*
654 * Close it down - release our resources and go home..
655 */
656 static void yenta_close(struct pci_dev *dev)
657 {
658 struct yenta_socket *sock = pci_get_drvdata(dev);
659
660 /* we don't want a dying socket registered */
661 pcmcia_unregister_socket(&sock->socket);
662
663 /* Disable all events so we don't die in an IRQ storm */
664 cb_writel(sock, CB_SOCKET_MASK, 0x0);
665 exca_writeb(sock, I365_CSCINT, 0);
666
667 if (sock->cb_irq)
668 free_irq(sock->cb_irq, sock);
669 else
670 del_timer_sync(&sock->poll_timer);
671
672 if (sock->base)
673 iounmap(sock->base);
674 yenta_free_resources(sock);
675
676 pci_release_regions(dev);
677 pci_disable_device(dev);
678 pci_set_drvdata(dev, NULL);
679 }
680
681
682 static struct pccard_operations yenta_socket_operations = {
683 .init = yenta_sock_init,
684 .suspend = yenta_sock_suspend,
685 .get_status = yenta_get_status,
686 .get_socket = yenta_get_socket,
687 .set_socket = yenta_set_socket,
688 .set_io_map = yenta_set_io_map,
689 .set_mem_map = yenta_set_mem_map,
690 };
691
692
693 #include "ti113x.h"
694 #include "ricoh.h"
695 #include "topic.h"
696 #include "o2micro.h"
697
698 enum {
699 CARDBUS_TYPE_DEFAULT = -1,
700 CARDBUS_TYPE_TI,
701 CARDBUS_TYPE_TI113X,
702 CARDBUS_TYPE_TI12XX,
703 CARDBUS_TYPE_TI1250,
704 CARDBUS_TYPE_RICOH,
705 CARDBUS_TYPE_TOPIC97,
706 CARDBUS_TYPE_O2MICRO,
707 };
708
709 /*
710 * Different cardbus controllers have slightly different
711 * initialization sequences etc details. List them here..
712 */
713 static struct cardbus_type cardbus_type[] = {
714 [CARDBUS_TYPE_TI] = {
715 .override = ti_override,
716 .save_state = ti_save_state,
717 .restore_state = ti_restore_state,
718 .sock_init = ti_init,
719 },
720 [CARDBUS_TYPE_TI113X] = {
721 .override = ti113x_override,
722 .save_state = ti_save_state,
723 .restore_state = ti_restore_state,
724 .sock_init = ti_init,
725 },
726 [CARDBUS_TYPE_TI12XX] = {
727 .override = ti12xx_override,
728 .save_state = ti_save_state,
729 .restore_state = ti_restore_state,
730 .sock_init = ti_init,
731 },
732 [CARDBUS_TYPE_TI1250] = {
733 .override = ti1250_override,
734 .save_state = ti_save_state,
735 .restore_state = ti_restore_state,
736 .sock_init = ti_init,
737 },
738 [CARDBUS_TYPE_RICOH] = {
739 .override = ricoh_override,
740 .save_state = ricoh_save_state,
741 .restore_state = ricoh_restore_state,
742 },
743 [CARDBUS_TYPE_TOPIC97] = {
744 .override = topic97_override,
745 },
746 [CARDBUS_TYPE_O2MICRO] = {
747 .override = o2micro_override,
748 .restore_state = o2micro_restore_state,
749 },
750 };
751
752
753 /*
754 * Only probe "regular" interrupts, don't
755 * touch dangerous spots like the mouse irq,
756 * because there are mice that apparently
757 * get really confused if they get fondled
758 * too intimately.
759 *
760 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
761 */
762 static u32 isa_interrupts = 0x0ef8;
763
764 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
765 {
766 int i;
767 unsigned long val;
768 u16 bridge_ctrl;
769 u32 mask;
770
771 /* Set up ISA irq routing to probe the ISA irqs.. */
772 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
773 if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
774 bridge_ctrl |= CB_BRIDGE_INTR;
775 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
776 }
777
778 /*
779 * Probe for usable interrupts using the force
780 * register to generate bogus card status events.
781 */
782 cb_writel(socket, CB_SOCKET_EVENT, -1);
783 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
784 exca_writeb(socket, I365_CSCINT, 0);
785 val = probe_irq_on() & isa_irq_mask;
786 for (i = 1; i < 16; i++) {
787 if (!((val >> i) & 1))
788 continue;
789 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
790 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
791 udelay(100);
792 cb_writel(socket, CB_SOCKET_EVENT, -1);
793 }
794 cb_writel(socket, CB_SOCKET_MASK, 0);
795 exca_writeb(socket, I365_CSCINT, 0);
796
797 mask = probe_irq_mask(val) & 0xffff;
798
799 bridge_ctrl &= ~CB_BRIDGE_INTR;
800 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
801
802 return mask;
803 }
804
805
806 /* interrupt handler, only used during probing */
807 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
808 {
809 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
810 u8 csc;
811 u32 cb_event;
812
813 /* Clear interrupt status for the event */
814 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
815 cb_writel(socket, CB_SOCKET_EVENT, -1);
816 csc = exca_readb(socket, I365_CSC);
817
818 if (cb_event || csc) {
819 socket->probe_status = 1;
820 return IRQ_HANDLED;
821 }
822
823 return IRQ_NONE;
824 }
825
826 /* probes the PCI interrupt, use only on override functions */
827 static int yenta_probe_cb_irq(struct yenta_socket *socket)
828 {
829 u16 bridge_ctrl;
830
831 if (!socket->cb_irq)
832 return -1;
833
834 socket->probe_status = 0;
835
836 /* disable ISA interrupts */
837 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
838 bridge_ctrl &= ~CB_BRIDGE_INTR;
839 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
840
841 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
842 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
843 return -1;
844 }
845
846 /* generate interrupt, wait */
847 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
848 cb_writel(socket, CB_SOCKET_EVENT, -1);
849 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
850 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
851
852 msleep(100);
853
854 /* disable interrupts */
855 cb_writel(socket, CB_SOCKET_MASK, 0);
856 exca_writeb(socket, I365_CSCINT, 0);
857 cb_writel(socket, CB_SOCKET_EVENT, -1);
858 exca_readb(socket, I365_CSC);
859
860 free_irq(socket->cb_irq, socket);
861
862 return (int) socket->probe_status;
863 }
864
865
866
867 /*
868 * Set static data that doesn't need re-initializing..
869 */
870 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
871 {
872 socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
873 socket->socket.map_size = 0x1000;
874 socket->socket.pci_irq = socket->cb_irq;
875 if (isa_probe)
876 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
877 else
878 socket->socket.irq_mask = 0;
879 socket->socket.cb_dev = socket->dev;
880
881 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
882 socket->socket.irq_mask, socket->cb_irq);
883 }
884
885 /*
886 * Initialize the standard cardbus registers
887 */
888 static void yenta_config_init(struct yenta_socket *socket)
889 {
890 u16 bridge;
891 struct pci_dev *dev = socket->dev;
892
893 pci_set_power_state(socket->dev, 0);
894
895 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
896 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start);
897 config_writew(socket, PCI_COMMAND,
898 PCI_COMMAND_IO |
899 PCI_COMMAND_MEMORY |
900 PCI_COMMAND_MASTER |
901 PCI_COMMAND_WAIT);
902
903 /* MAGIC NUMBERS! Fixme */
904 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
905 config_writeb(socket, PCI_LATENCY_TIMER, 168);
906 config_writel(socket, PCI_PRIMARY_BUS,
907 (176 << 24) | /* sec. latency timer */
908 (dev->subordinate->subordinate << 16) | /* subordinate bus */
909 (dev->subordinate->secondary << 8) | /* secondary bus */
910 dev->subordinate->primary); /* primary bus */
911
912 /*
913 * Set up the bridging state:
914 * - enable write posting.
915 * - memory window 0 prefetchable, window 1 non-prefetchable
916 * - PCI interrupts enabled if a PCI interrupt exists..
917 */
918 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
919 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
920 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
921 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
922 }
923
924 /*
925 * Initialize a cardbus controller. Make sure we have a usable
926 * interrupt, and that we can map the cardbus area. Fill in the
927 * socket information structure..
928 */
929 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
930 {
931 struct yenta_socket *socket;
932 int ret;
933
934 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
935 if (!socket)
936 return -ENOMEM;
937 memset(socket, 0, sizeof(*socket));
938
939 /* prepare pcmcia_socket */
940 socket->socket.ops = &yenta_socket_operations;
941 socket->socket.resource_ops = &pccard_nonstatic_ops;
942 socket->socket.dev.dev = &dev->dev;
943 socket->socket.driver_data = socket;
944 socket->socket.owner = THIS_MODULE;
945
946 /* prepare struct yenta_socket */
947 socket->dev = dev;
948 pci_set_drvdata(dev, socket);
949
950 /*
951 * Do some basic sanity checking..
952 */
953 if (pci_enable_device(dev)) {
954 ret = -EBUSY;
955 goto free;
956 }
957
958 ret = pci_request_regions(dev, "yenta_socket");
959 if (ret)
960 goto disable;
961
962 if (!pci_resource_start(dev, 0)) {
963 printk(KERN_ERR "No cardbus resource!\n");
964 ret = -ENODEV;
965 goto release;
966 }
967
968 /*
969 * Ok, start setup.. Map the cardbus registers,
970 * and request the IRQ.
971 */
972 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
973 if (!socket->base) {
974 ret = -ENOMEM;
975 goto release;
976 }
977
978 /*
979 * report the subsystem vendor and device for help debugging
980 * the irq stuff...
981 */
982 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
983 pci_name(dev), dev->subsystem_vendor, dev->subsystem_device);
984
985 yenta_config_init(socket);
986
987 /* Disable all events */
988 cb_writel(socket, CB_SOCKET_MASK, 0x0);
989
990 /* Set up the bridge regions.. */
991 yenta_allocate_resources(socket);
992
993 socket->cb_irq = dev->irq;
994
995 /* Do we have special options for the device? */
996 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
997 id->driver_data < ARRAY_SIZE(cardbus_type)) {
998 socket->type = &cardbus_type[id->driver_data];
999
1000 ret = socket->type->override(socket);
1001 if (ret < 0)
1002 goto unmap;
1003 }
1004
1005 /* We must finish initialization here */
1006
1007 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
1008 /* No IRQ or request_irq failed. Poll */
1009 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1010 init_timer(&socket->poll_timer);
1011 socket->poll_timer.function = yenta_interrupt_wrapper;
1012 socket->poll_timer.data = (unsigned long)socket;
1013 socket->poll_timer.expires = jiffies + HZ;
1014 add_timer(&socket->poll_timer);
1015 }
1016
1017 /* Figure out what the dang thing can do for the PCMCIA layer... */
1018 yenta_interrogate(socket);
1019 yenta_get_socket_capabilities(socket, isa_interrupts);
1020 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1021
1022 /* Register it with the pcmcia layer.. */
1023 ret = pcmcia_register_socket(&socket->socket);
1024 if (ret == 0)
1025 goto out;
1026
1027 unmap:
1028 iounmap(socket->base);
1029 release:
1030 pci_release_regions(dev);
1031 disable:
1032 pci_disable_device(dev);
1033 free:
1034 kfree(socket);
1035 out:
1036 return ret;
1037 }
1038
1039
1040 static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
1041 {
1042 struct yenta_socket *socket = pci_get_drvdata(dev);
1043 int ret;
1044
1045 ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1046
1047 if (socket) {
1048 if (socket->type && socket->type->save_state)
1049 socket->type->save_state(socket);
1050
1051 /* FIXME: pci_save_state needs to have a better interface */
1052 pci_save_state(dev);
1053 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
1054 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
1055
1056 /*
1057 * Some laptops (IBM T22) do not like us putting the Cardbus
1058 * bridge into D3. At a guess, some other laptop will
1059 * probably require this, so leave it commented out for now.
1060 */
1061 /* pci_set_power_state(dev, 3); */
1062 }
1063
1064 return ret;
1065 }
1066
1067
1068 static int yenta_dev_resume (struct pci_dev *dev)
1069 {
1070 struct yenta_socket *socket = pci_get_drvdata(dev);
1071
1072 if (socket) {
1073 pci_set_power_state(dev, 0);
1074 /* FIXME: pci_restore_state needs to have a better interface */
1075 pci_restore_state(dev);
1076 pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
1077 pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
1078
1079 if (socket->type && socket->type->restore_state)
1080 socket->type->restore_state(socket);
1081 }
1082
1083 return pcmcia_socket_dev_resume(&dev->dev);
1084 }
1085
1086
1087 #define CB_ID(vend,dev,type) \
1088 { \
1089 .vendor = vend, \
1090 .device = dev, \
1091 .subvendor = PCI_ANY_ID, \
1092 .subdevice = PCI_ANY_ID, \
1093 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1094 .class_mask = ~0, \
1095 .driver_data = CARDBUS_TYPE_##type, \
1096 }
1097
1098 static struct pci_device_id yenta_table [] = {
1099 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1100
1101 /*
1102 * TBD: Check if these TI variants can use more
1103 * advanced overrides instead. (I can't get the
1104 * data sheets for these devices. --rmk)
1105 */
1106 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1107
1108 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1109 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1110
1111 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1112 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1113 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1114 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1115 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1116 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1117 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1118 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1119 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1120 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1121 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1122 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1123 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1124 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1125 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1126 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1127 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1128
1129 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1130 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1131
1132 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
1133 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
1134 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
1135 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
1136
1137 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1138 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1139 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1140 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1141 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1142
1143 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1144 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1145
1146 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1147
1148 /* match any cardbus bridge */
1149 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1150 { /* all zeroes */ }
1151 };
1152 MODULE_DEVICE_TABLE(pci, yenta_table);
1153
1154
1155 static struct pci_driver yenta_cardbus_driver = {
1156 .name = "yenta_cardbus",
1157 .id_table = yenta_table,
1158 .probe = yenta_probe,
1159 .remove = __devexit_p(yenta_close),
1160 .suspend = yenta_dev_suspend,
1161 .resume = yenta_dev_resume,
1162 };
1163
1164
1165 static int __init yenta_socket_init(void)
1166 {
1167 return pci_register_driver (&yenta_cardbus_driver);
1168 }
1169
1170
1171 static void __exit yenta_socket_exit (void)
1172 {
1173 pci_unregister_driver (&yenta_cardbus_driver);
1174 }
1175
1176
1177 module_init(yenta_socket_init);
1178 module_exit(yenta_socket_exit);
1179
1180 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards