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drm/radeon: add a way to revoke hyper-z access
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / memstick / host / jmb38x_ms.c
blobf2b894cd8b026b49d9bdd1cec95ef55535abde8d
1 /*
2 * jmb38x_ms.c - JMicron jmb38x MemoryStick card reader
3 *
4 * Copyright (C) 2008 Alex Dubov <oakad@yahoo.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 */
11
12 #include <linux/spinlock.h>
13 #include <linux/interrupt.h>
14 #include <linux/pci.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/delay.h>
17 #include <linux/highmem.h>
18 #include <linux/memstick.h>
19 #include <linux/slab.h>
20
21 #define DRIVER_NAME "jmb38x_ms"
22
23 static int no_dma;
24 module_param(no_dma, bool, 0644);
25
26 enum {
27 DMA_ADDRESS = 0x00,
28 BLOCK = 0x04,
29 DMA_CONTROL = 0x08,
30 TPC_P0 = 0x0c,
31 TPC_P1 = 0x10,
32 TPC = 0x14,
33 HOST_CONTROL = 0x18,
34 DATA = 0x1c,
35 STATUS = 0x20,
36 INT_STATUS = 0x24,
37 INT_STATUS_ENABLE = 0x28,
38 INT_SIGNAL_ENABLE = 0x2c,
39 TIMER = 0x30,
40 TIMER_CONTROL = 0x34,
41 PAD_OUTPUT_ENABLE = 0x38,
42 PAD_PU_PD = 0x3c,
43 CLOCK_DELAY = 0x40,
44 ADMA_ADDRESS = 0x44,
45 CLOCK_CONTROL = 0x48,
46 LED_CONTROL = 0x4c,
47 VERSION = 0x50
48 };
49
50 struct jmb38x_ms_host {
51 struct jmb38x_ms *chip;
52 void __iomem *addr;
53 spinlock_t lock;
54 struct tasklet_struct notify;
55 int id;
56 char host_id[32];
57 int irq;
58 unsigned int block_pos;
59 unsigned long timeout_jiffies;
60 struct timer_list timer;
61 struct memstick_request *req;
62 unsigned char cmd_flags;
63 unsigned char io_pos;
64 unsigned int io_word[2];
65 };
66
67 struct jmb38x_ms {
68 struct pci_dev *pdev;
69 int host_cnt;
70 struct memstick_host *hosts[];
71 };
72
73 #define BLOCK_COUNT_MASK 0xffff0000
74 #define BLOCK_SIZE_MASK 0x00000fff
75
76 #define DMA_CONTROL_ENABLE 0x00000001
77
78 #define TPC_DATA_SEL 0x00008000
79 #define TPC_DIR 0x00004000
80 #define TPC_WAIT_INT 0x00002000
81 #define TPC_GET_INT 0x00000800
82 #define TPC_CODE_SZ_MASK 0x00000700
83 #define TPC_DATA_SZ_MASK 0x00000007
84
85 #define HOST_CONTROL_TDELAY_EN 0x00040000
86 #define HOST_CONTROL_HW_OC_P 0x00010000
87 #define HOST_CONTROL_RESET_REQ 0x00008000
88 #define HOST_CONTROL_REI 0x00004000
89 #define HOST_CONTROL_LED 0x00000400
90 #define HOST_CONTROL_FAST_CLK 0x00000200
91 #define HOST_CONTROL_RESET 0x00000100
92 #define HOST_CONTROL_POWER_EN 0x00000080
93 #define HOST_CONTROL_CLOCK_EN 0x00000040
94 #define HOST_CONTROL_REO 0x00000008
95 #define HOST_CONTROL_IF_SHIFT 4
96
97 #define HOST_CONTROL_IF_SERIAL 0x0
98 #define HOST_CONTROL_IF_PAR4 0x1
99 #define HOST_CONTROL_IF_PAR8 0x3
100
101 #define STATUS_BUSY 0x00080000
102 #define STATUS_MS_DAT7 0x00040000
103 #define STATUS_MS_DAT6 0x00020000
104 #define STATUS_MS_DAT5 0x00010000
105 #define STATUS_MS_DAT4 0x00008000
106 #define STATUS_MS_DAT3 0x00004000
107 #define STATUS_MS_DAT2 0x00002000
108 #define STATUS_MS_DAT1 0x00001000
109 #define STATUS_MS_DAT0 0x00000800
110 #define STATUS_HAS_MEDIA 0x00000400
111 #define STATUS_FIFO_EMPTY 0x00000200
112 #define STATUS_FIFO_FULL 0x00000100
113 #define STATUS_MS_CED 0x00000080
114 #define STATUS_MS_ERR 0x00000040
115 #define STATUS_MS_BRQ 0x00000020
116 #define STATUS_MS_CNK 0x00000001
117
118 #define INT_STATUS_TPC_ERR 0x00080000
119 #define INT_STATUS_CRC_ERR 0x00040000
120 #define INT_STATUS_TIMER_TO 0x00020000
121 #define INT_STATUS_HSK_TO 0x00010000
122 #define INT_STATUS_ANY_ERR 0x00008000
123 #define INT_STATUS_FIFO_WRDY 0x00000080
124 #define INT_STATUS_FIFO_RRDY 0x00000040
125 #define INT_STATUS_MEDIA_OUT 0x00000010
126 #define INT_STATUS_MEDIA_IN 0x00000008
127 #define INT_STATUS_DMA_BOUNDARY 0x00000004
128 #define INT_STATUS_EOTRAN 0x00000002
129 #define INT_STATUS_EOTPC 0x00000001
130
131 #define INT_STATUS_ALL 0x000f801f
132
133 #define PAD_OUTPUT_ENABLE_MS 0x0F3F
134
135 #define PAD_PU_PD_OFF 0x7FFF0000
136 #define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
137 #define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
138
139 #define CLOCK_CONTROL_40MHZ 0x00000001
140 #define CLOCK_CONTROL_50MHZ 0x0000000a
141 #define CLOCK_CONTROL_60MHZ 0x00000008
142 #define CLOCK_CONTROL_62_5MHZ 0x0000000c
143 #define CLOCK_CONTROL_OFF 0x00000000
144
145 #define PCI_CTL_CLOCK_DLY_ADDR 0x000000b0
146 #define PCI_CTL_CLOCK_DLY_MASK_A 0x00000f00
147 #define PCI_CTL_CLOCK_DLY_MASK_B 0x0000f000
148
149 enum {
150 CMD_READY = 0x01,
151 FIFO_READY = 0x02,
152 REG_DATA = 0x04,
153 DMA_DATA = 0x08
154 };
155
156 static unsigned int jmb38x_ms_read_data(struct jmb38x_ms_host *host,
157 unsigned char *buf, unsigned int length)
158 {
159 unsigned int off = 0;
160
161 while (host->io_pos && length) {
162 buf[off++] = host->io_word[0] & 0xff;
163 host->io_word[0] >>= 8;
164 length--;
165 host->io_pos--;
166 }
167
168 if (!length)
169 return off;
170
171 while (!(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
172 if (length < 4)
173 break;
174 *(unsigned int *)(buf + off) = __raw_readl(host->addr + DATA);
175 length -= 4;
176 off += 4;
177 }
178
179 if (length
180 && !(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
181 host->io_word[0] = readl(host->addr + DATA);
182 for (host->io_pos = 4; host->io_pos; --host->io_pos) {
183 buf[off++] = host->io_word[0] & 0xff;
184 host->io_word[0] >>= 8;
185 length--;
186 if (!length)
187 break;
188 }
189 }
190
191 return off;
192 }
193
194 static unsigned int jmb38x_ms_read_reg_data(struct jmb38x_ms_host *host,
195 unsigned char *buf,
196 unsigned int length)
197 {
198 unsigned int off = 0;
199
200 while (host->io_pos > 4 && length) {
201 buf[off++] = host->io_word[0] & 0xff;
202 host->io_word[0] >>= 8;
203 length--;
204 host->io_pos--;
205 }
206
207 if (!length)
208 return off;
209
210 while (host->io_pos && length) {
211 buf[off++] = host->io_word[1] & 0xff;
212 host->io_word[1] >>= 8;
213 length--;
214 host->io_pos--;
215 }
216
217 return off;
218 }
219
220 static unsigned int jmb38x_ms_write_data(struct jmb38x_ms_host *host,
221 unsigned char *buf,
222 unsigned int length)
223 {
224 unsigned int off = 0;
225
226 if (host->io_pos) {
227 while (host->io_pos < 4 && length) {
228 host->io_word[0] |= buf[off++] << (host->io_pos * 8);
229 host->io_pos++;
230 length--;
231 }
232 }
233
234 if (host->io_pos == 4
235 && !(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
236 writel(host->io_word[0], host->addr + DATA);
237 host->io_pos = 0;
238 host->io_word[0] = 0;
239 } else if (host->io_pos) {
240 return off;
241 }
242
243 if (!length)
244 return off;
245
246 while (!(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
247 if (length < 4)
248 break;
249
250 __raw_writel(*(unsigned int *)(buf + off),
251 host->addr + DATA);
252 length -= 4;
253 off += 4;
254 }
255
256 switch (length) {
257 case 3:
258 host->io_word[0] |= buf[off + 2] << 16;
259 host->io_pos++;
260 case 2:
261 host->io_word[0] |= buf[off + 1] << 8;
262 host->io_pos++;
263 case 1:
264 host->io_word[0] |= buf[off];
265 host->io_pos++;
266 }
267
268 off += host->io_pos;
269
270 return off;
271 }
272
273 static unsigned int jmb38x_ms_write_reg_data(struct jmb38x_ms_host *host,
274 unsigned char *buf,
275 unsigned int length)
276 {
277 unsigned int off = 0;
278
279 while (host->io_pos < 4 && length) {
280 host->io_word[0] &= ~(0xff << (host->io_pos * 8));
281 host->io_word[0] |= buf[off++] << (host->io_pos * 8);
282 host->io_pos++;
283 length--;
284 }
285
286 if (!length)
287 return off;
288
289 while (host->io_pos < 8 && length) {
290 host->io_word[1] &= ~(0xff << (host->io_pos * 8));
291 host->io_word[1] |= buf[off++] << (host->io_pos * 8);
292 host->io_pos++;
293 length--;
294 }
295
296 return off;
297 }
298
299 static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
300 {
301 unsigned int length;
302 unsigned int off;
303 unsigned int t_size, p_cnt;
304 unsigned char *buf;
305 struct page *pg;
306 unsigned long flags = 0;
307
308 if (host->req->long_data) {
309 length = host->req->sg.length - host->block_pos;
310 off = host->req->sg.offset + host->block_pos;
311 } else {
312 length = host->req->data_len - host->block_pos;
313 off = 0;
314 }
315
316 while (length) {
317 unsigned int uninitialized_var(p_off);
318
319 if (host->req->long_data) {
320 pg = nth_page(sg_page(&host->req->sg),
321 off >> PAGE_SHIFT);
322 p_off = offset_in_page(off);
323 p_cnt = PAGE_SIZE - p_off;
324 p_cnt = min(p_cnt, length);
325
326 local_irq_save(flags);
327 buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off;
328 } else {
329 buf = host->req->data + host->block_pos;
330 p_cnt = host->req->data_len - host->block_pos;
331 }
332
333 if (host->req->data_dir == WRITE)
334 t_size = !(host->cmd_flags & REG_DATA)
335 ? jmb38x_ms_write_data(host, buf, p_cnt)
336 : jmb38x_ms_write_reg_data(host, buf, p_cnt);
337 else
338 t_size = !(host->cmd_flags & REG_DATA)
339 ? jmb38x_ms_read_data(host, buf, p_cnt)
340 : jmb38x_ms_read_reg_data(host, buf, p_cnt);
341
342 if (host->req->long_data) {
343 kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ);
344 local_irq_restore(flags);
345 }
346
347 if (!t_size)
348 break;
349 host->block_pos += t_size;
350 length -= t_size;
351 off += t_size;
352 }
353
354 if (!length && host->req->data_dir == WRITE) {
355 if (host->cmd_flags & REG_DATA) {
356 writel(host->io_word[0], host->addr + TPC_P0);
357 writel(host->io_word[1], host->addr + TPC_P1);
358 } else if (host->io_pos) {
359 writel(host->io_word[0], host->addr + DATA);
360 }
361 }
362
363 return length;
364 }
365
366 static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
367 {
368 struct jmb38x_ms_host *host = memstick_priv(msh);
369 unsigned char *data;
370 unsigned int data_len, cmd, t_val;
371
372 if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) {
373 dev_dbg(&msh->dev, "no media status\n");
374 host->req->error = -ETIME;
375 return host->req->error;
376 }
377
378 dev_dbg(&msh->dev, "control %08x\n", readl(host->addr + HOST_CONTROL));
379 dev_dbg(&msh->dev, "status %08x\n", readl(host->addr + INT_STATUS));
380 dev_dbg(&msh->dev, "hstatus %08x\n", readl(host->addr + STATUS));
381
382 host->cmd_flags = 0;
383 host->block_pos = 0;
384 host->io_pos = 0;
385 host->io_word[0] = 0;
386 host->io_word[1] = 0;
387
388 cmd = host->req->tpc << 16;
389 cmd |= TPC_DATA_SEL;
390
391 if (host->req->data_dir == READ)
392 cmd |= TPC_DIR;
393 if (host->req->need_card_int)
394 cmd |= TPC_WAIT_INT;
395
396 data = host->req->data;
397
398 if (!no_dma)
399 host->cmd_flags |= DMA_DATA;
400
401 if (host->req->long_data) {
402 data_len = host->req->sg.length;
403 } else {
404 data_len = host->req->data_len;
405 host->cmd_flags &= ~DMA_DATA;
406 }
407
408 if (data_len <= 8) {
409 cmd &= ~(TPC_DATA_SEL | 0xf);
410 host->cmd_flags |= REG_DATA;
411 cmd |= data_len & 0xf;
412 host->cmd_flags &= ~DMA_DATA;
413 }
414
415 if (host->cmd_flags & DMA_DATA) {
416 if (1 != pci_map_sg(host->chip->pdev, &host->req->sg, 1,
417 host->req->data_dir == READ
418 ? PCI_DMA_FROMDEVICE
419 : PCI_DMA_TODEVICE)) {
420 host->req->error = -ENOMEM;
421 return host->req->error;
422 }
423 data_len = sg_dma_len(&host->req->sg);
424 writel(sg_dma_address(&host->req->sg),
425 host->addr + DMA_ADDRESS);
426 writel(((1 << 16) & BLOCK_COUNT_MASK)
427 | (data_len & BLOCK_SIZE_MASK),
428 host->addr + BLOCK);
429 writel(DMA_CONTROL_ENABLE, host->addr + DMA_CONTROL);
430 } else if (!(host->cmd_flags & REG_DATA)) {
431 writel(((1 << 16) & BLOCK_COUNT_MASK)
432 | (data_len & BLOCK_SIZE_MASK),
433 host->addr + BLOCK);
434 t_val = readl(host->addr + INT_STATUS_ENABLE);
435 t_val |= host->req->data_dir == READ
436 ? INT_STATUS_FIFO_RRDY
437 : INT_STATUS_FIFO_WRDY;
438
439 writel(t_val, host->addr + INT_STATUS_ENABLE);
440 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
441 } else {
442 cmd &= ~(TPC_DATA_SEL | 0xf);
443 host->cmd_flags |= REG_DATA;
444 cmd |= data_len & 0xf;
445
446 if (host->req->data_dir == WRITE) {
447 jmb38x_ms_transfer_data(host);
448 writel(host->io_word[0], host->addr + TPC_P0);
449 writel(host->io_word[1], host->addr + TPC_P1);
450 }
451 }
452
453 mod_timer(&host->timer, jiffies + host->timeout_jiffies);
454 writel(HOST_CONTROL_LED | readl(host->addr + HOST_CONTROL),
455 host->addr + HOST_CONTROL);
456 host->req->error = 0;
457
458 writel(cmd, host->addr + TPC);
459 dev_dbg(&msh->dev, "executing TPC %08x, len %x\n", cmd, data_len);
460
461 return 0;
462 }
463
464 static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
465 {
466 struct jmb38x_ms_host *host = memstick_priv(msh);
467 unsigned int t_val = 0;
468 int rc;
469
470 del_timer(&host->timer);
471
472 dev_dbg(&msh->dev, "c control %08x\n",
473 readl(host->addr + HOST_CONTROL));
474 dev_dbg(&msh->dev, "c status %08x\n",
475 readl(host->addr + INT_STATUS));
476 dev_dbg(&msh->dev, "c hstatus %08x\n", readl(host->addr + STATUS));
477
478 host->req->int_reg = readl(host->addr + STATUS) & 0xff;
479
480 writel(0, host->addr + BLOCK);
481 writel(0, host->addr + DMA_CONTROL);
482
483 if (host->cmd_flags & DMA_DATA) {
484 pci_unmap_sg(host->chip->pdev, &host->req->sg, 1,
485 host->req->data_dir == READ
486 ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
487 } else {
488 t_val = readl(host->addr + INT_STATUS_ENABLE);
489 if (host->req->data_dir == READ)
490 t_val &= ~INT_STATUS_FIFO_RRDY;
491 else
492 t_val &= ~INT_STATUS_FIFO_WRDY;
493
494 writel(t_val, host->addr + INT_STATUS_ENABLE);
495 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
496 }
497
498 writel((~HOST_CONTROL_LED) & readl(host->addr + HOST_CONTROL),
499 host->addr + HOST_CONTROL);
500
501 if (!last) {
502 do {
503 rc = memstick_next_req(msh, &host->req);
504 } while (!rc && jmb38x_ms_issue_cmd(msh));
505 } else {
506 do {
507 rc = memstick_next_req(msh, &host->req);
508 if (!rc)
509 host->req->error = -ETIME;
510 } while (!rc);
511 }
512 }
513
514 static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
515 {
516 struct memstick_host *msh = dev_id;
517 struct jmb38x_ms_host *host = memstick_priv(msh);
518 unsigned int irq_status;
519
520 spin_lock(&host->lock);
521 irq_status = readl(host->addr + INT_STATUS);
522 dev_dbg(&host->chip->pdev->dev, "irq_status = %08x\n", irq_status);
523 if (irq_status == 0 || irq_status == (~0)) {
524 spin_unlock(&host->lock);
525 return IRQ_NONE;
526 }
527
528 if (host->req) {
529 if (irq_status & INT_STATUS_ANY_ERR) {
530 if (irq_status & INT_STATUS_CRC_ERR)
531 host->req->error = -EILSEQ;
532 else
533 host->req->error = -ETIME;
534 } else {
535 if (host->cmd_flags & DMA_DATA) {
536 if (irq_status & INT_STATUS_EOTRAN)
537 host->cmd_flags |= FIFO_READY;
538 } else {
539 if (irq_status & (INT_STATUS_FIFO_RRDY
540 | INT_STATUS_FIFO_WRDY))
541 jmb38x_ms_transfer_data(host);
542
543 if (irq_status & INT_STATUS_EOTRAN) {
544 jmb38x_ms_transfer_data(host);
545 host->cmd_flags |= FIFO_READY;
546 }
547 }
548
549 if (irq_status & INT_STATUS_EOTPC) {
550 host->cmd_flags |= CMD_READY;
551 if (host->cmd_flags & REG_DATA) {
552 if (host->req->data_dir == READ) {
553 host->io_word[0]
554 = readl(host->addr
555 + TPC_P0);
556 host->io_word[1]
557 = readl(host->addr
558 + TPC_P1);
559 host->io_pos = 8;
560
561 jmb38x_ms_transfer_data(host);
562 }
563 host->cmd_flags |= FIFO_READY;
564 }
565 }
566 }
567 }
568
569 if (irq_status & (INT_STATUS_MEDIA_IN | INT_STATUS_MEDIA_OUT)) {
570 dev_dbg(&host->chip->pdev->dev, "media changed\n");
571 memstick_detect_change(msh);
572 }
573
574 writel(irq_status, host->addr + INT_STATUS);
575
576 if (host->req
577 && (((host->cmd_flags & CMD_READY)
578 && (host->cmd_flags & FIFO_READY))
579 || host->req->error))
580 jmb38x_ms_complete_cmd(msh, 0);
581
582 spin_unlock(&host->lock);
583 return IRQ_HANDLED;
584 }
585
586 static void jmb38x_ms_abort(unsigned long data)
587 {
588 struct memstick_host *msh = (struct memstick_host *)data;
589 struct jmb38x_ms_host *host = memstick_priv(msh);
590 unsigned long flags;
591
592 dev_dbg(&host->chip->pdev->dev, "abort\n");
593 spin_lock_irqsave(&host->lock, flags);
594 if (host->req) {
595 host->req->error = -ETIME;
596 jmb38x_ms_complete_cmd(msh, 0);
597 }
598 spin_unlock_irqrestore(&host->lock, flags);
599 }
600
601 static void jmb38x_ms_req_tasklet(unsigned long data)
602 {
603 struct memstick_host *msh = (struct memstick_host *)data;
604 struct jmb38x_ms_host *host = memstick_priv(msh);
605 unsigned long flags;
606 int rc;
607
608 spin_lock_irqsave(&host->lock, flags);
609 if (!host->req) {
610 do {
611 rc = memstick_next_req(msh, &host->req);
612 dev_dbg(&host->chip->pdev->dev, "tasklet req %d\n", rc);
613 } while (!rc && jmb38x_ms_issue_cmd(msh));
614 }
615 spin_unlock_irqrestore(&host->lock, flags);
616 }
617
618 static void jmb38x_ms_dummy_submit(struct memstick_host *msh)
619 {
620 return;
621 }
622
623 static void jmb38x_ms_submit_req(struct memstick_host *msh)
624 {
625 struct jmb38x_ms_host *host = memstick_priv(msh);
626
627 tasklet_schedule(&host->notify);
628 }
629
630 static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
631 {
632 int cnt;
633
634 writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN
635 | readl(host->addr + HOST_CONTROL),
636 host->addr + HOST_CONTROL);
637 mmiowb();
638
639 for (cnt = 0; cnt < 20; ++cnt) {
640 if (!(HOST_CONTROL_RESET_REQ
641 & readl(host->addr + HOST_CONTROL)))
642 goto reset_next;
643
644 ndelay(20);
645 }
646 dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n");
647 /* return -EIO; */
648
649 reset_next:
650 writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
651 | readl(host->addr + HOST_CONTROL),
652 host->addr + HOST_CONTROL);
653 mmiowb();
654
655 for (cnt = 0; cnt < 20; ++cnt) {
656 if (!(HOST_CONTROL_RESET
657 & readl(host->addr + HOST_CONTROL)))
658 goto reset_ok;
659
660 ndelay(20);
661 }
662 dev_dbg(&host->chip->pdev->dev, "reset timeout\n");
663 return -EIO;
664
665 reset_ok:
666 mmiowb();
667 writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
668 writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
669 return 0;
670 }
671
672 static int jmb38x_ms_set_param(struct memstick_host *msh,
673 enum memstick_param param,
674 int value)
675 {
676 struct jmb38x_ms_host *host = memstick_priv(msh);
677 unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
678 unsigned int clock_ctl = CLOCK_CONTROL_40MHZ, clock_delay = 0;
679 int rc = 0;
680
681 switch (param) {
682 case MEMSTICK_POWER:
683 if (value == MEMSTICK_POWER_ON) {
684 rc = jmb38x_ms_reset(host);
685 if (rc)
686 return rc;
687
688 host_ctl = 7;
689 host_ctl |= HOST_CONTROL_POWER_EN
690 | HOST_CONTROL_CLOCK_EN
691 | HOST_CONTROL_HW_OC_P
692 | HOST_CONTROL_TDELAY_EN;
693 writel(host_ctl, host->addr + HOST_CONTROL);
694
695 writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
696 : PAD_PU_PD_ON_MS_SOCK0,
697 host->addr + PAD_PU_PD);
698
699 writel(PAD_OUTPUT_ENABLE_MS,
700 host->addr + PAD_OUTPUT_ENABLE);
701
702 msleep(10);
703 dev_dbg(&host->chip->pdev->dev, "power on\n");
704 } else if (value == MEMSTICK_POWER_OFF) {
705 host_ctl &= ~(HOST_CONTROL_POWER_EN
706 | HOST_CONTROL_CLOCK_EN);
707 writel(host_ctl, host->addr + HOST_CONTROL);
708 writel(0, host->addr + PAD_OUTPUT_ENABLE);
709 writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD);
710 dev_dbg(&host->chip->pdev->dev, "power off\n");
711 } else
712 return -EINVAL;
713 break;
714 case MEMSTICK_INTERFACE:
715 host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
716 pci_read_config_dword(host->chip->pdev,
717 PCI_CTL_CLOCK_DLY_ADDR,
718 &clock_delay);
719 clock_delay &= host->id ? ~PCI_CTL_CLOCK_DLY_MASK_B
720 : ~PCI_CTL_CLOCK_DLY_MASK_A;
721
722 if (value == MEMSTICK_SERIAL) {
723 host_ctl &= ~HOST_CONTROL_FAST_CLK;
724 host_ctl &= ~HOST_CONTROL_REO;
725 host_ctl |= HOST_CONTROL_IF_SERIAL
726 << HOST_CONTROL_IF_SHIFT;
727 host_ctl |= HOST_CONTROL_REI;
728 clock_ctl = CLOCK_CONTROL_40MHZ;
729 } else if (value == MEMSTICK_PAR4) {
730 host_ctl |= HOST_CONTROL_FAST_CLK | HOST_CONTROL_REO;
731 host_ctl |= HOST_CONTROL_IF_PAR4
732 << HOST_CONTROL_IF_SHIFT;
733 host_ctl &= ~HOST_CONTROL_REI;
734 clock_ctl = CLOCK_CONTROL_40MHZ;
735 clock_delay |= host->id ? (4 << 12) : (4 << 8);
736 } else if (value == MEMSTICK_PAR8) {
737 host_ctl |= HOST_CONTROL_FAST_CLK;
738 host_ctl |= HOST_CONTROL_IF_PAR8
739 << HOST_CONTROL_IF_SHIFT;
740 host_ctl &= ~(HOST_CONTROL_REI | HOST_CONTROL_REO);
741 clock_ctl = CLOCK_CONTROL_50MHZ;
742 } else
743 return -EINVAL;
744
745 writel(host_ctl, host->addr + HOST_CONTROL);
746 writel(clock_ctl, host->addr + CLOCK_CONTROL);
747 pci_write_config_dword(host->chip->pdev,
748 PCI_CTL_CLOCK_DLY_ADDR,
749 clock_delay);
750 break;
751 };
752 return 0;
753 }
754
755 #ifdef CONFIG_PM
756
757 static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state)
758 {
759 struct jmb38x_ms *jm = pci_get_drvdata(dev);
760 int cnt;
761
762 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
763 if (!jm->hosts[cnt])
764 break;
765 memstick_suspend_host(jm->hosts[cnt]);
766 }
767
768 pci_save_state(dev);
769 pci_enable_wake(dev, pci_choose_state(dev, state), 0);
770 pci_disable_device(dev);
771 pci_set_power_state(dev, pci_choose_state(dev, state));
772 return 0;
773 }
774
775 static int jmb38x_ms_resume(struct pci_dev *dev)
776 {
777 struct jmb38x_ms *jm = pci_get_drvdata(dev);
778 int rc;
779
780 pci_set_power_state(dev, PCI_D0);
781 pci_restore_state(dev);
782 rc = pci_enable_device(dev);
783 if (rc)
784 return rc;
785 pci_set_master(dev);
786
787 pci_read_config_dword(dev, 0xac, &rc);
788 pci_write_config_dword(dev, 0xac, rc | 0x00470000);
789
790 for (rc = 0; rc < jm->host_cnt; ++rc) {
791 if (!jm->hosts[rc])
792 break;
793 memstick_resume_host(jm->hosts[rc]);
794 memstick_detect_change(jm->hosts[rc]);
795 }
796
797 return 0;
798 }
799
800 #else
801
802 #define jmb38x_ms_suspend NULL
803 #define jmb38x_ms_resume NULL
804
805 #endif /* CONFIG_PM */
806
807 static int jmb38x_ms_count_slots(struct pci_dev *pdev)
808 {
809 int cnt, rc = 0;
810
811 for (cnt = 0; cnt < PCI_ROM_RESOURCE; ++cnt) {
812 if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt)))
813 break;
814
815 if (256 != pci_resource_len(pdev, cnt))
816 break;
817
818 ++rc;
819 }
820 return rc;
821 }
822
823 static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt)
824 {
825 struct memstick_host *msh;
826 struct jmb38x_ms_host *host;
827
828 msh = memstick_alloc_host(sizeof(struct jmb38x_ms_host),
829 &jm->pdev->dev);
830 if (!msh)
831 return NULL;
832
833 host = memstick_priv(msh);
834 host->chip = jm;
835 host->addr = ioremap(pci_resource_start(jm->pdev, cnt),
836 pci_resource_len(jm->pdev, cnt));
837 if (!host->addr)
838 goto err_out_free;
839
840 spin_lock_init(&host->lock);
841 host->id = cnt;
842 snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d",
843 host->id);
844 host->irq = jm->pdev->irq;
845 host->timeout_jiffies = msecs_to_jiffies(1000);
846
847 tasklet_init(&host->notify, jmb38x_ms_req_tasklet, (unsigned long)msh);
848 msh->request = jmb38x_ms_submit_req;
849 msh->set_param = jmb38x_ms_set_param;
850
851 msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8;
852
853 setup_timer(&host->timer, jmb38x_ms_abort, (unsigned long)msh);
854
855 if (!request_irq(host->irq, jmb38x_ms_isr, IRQF_SHARED, host->host_id,
856 msh))
857 return msh;
858
859 iounmap(host->addr);
860 err_out_free:
861 kfree(msh);
862 return NULL;
863 }
864
865 static void jmb38x_ms_free_host(struct memstick_host *msh)
866 {
867 struct jmb38x_ms_host *host = memstick_priv(msh);
868
869 free_irq(host->irq, msh);
870 iounmap(host->addr);
871 memstick_free_host(msh);
872 }
873
874 static int jmb38x_ms_probe(struct pci_dev *pdev,
875 const struct pci_device_id *dev_id)
876 {
877 struct jmb38x_ms *jm;
878 int pci_dev_busy = 0;
879 int rc, cnt;
880
881 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
882 if (rc)
883 return rc;
884
885 rc = pci_enable_device(pdev);
886 if (rc)
887 return rc;
888
889 pci_set_master(pdev);
890
891 rc = pci_request_regions(pdev, DRIVER_NAME);
892 if (rc) {
893 pci_dev_busy = 1;
894 goto err_out;
895 }
896
897 pci_read_config_dword(pdev, 0xac, &rc);
898 pci_write_config_dword(pdev, 0xac, rc | 0x00470000);
899
900 cnt = jmb38x_ms_count_slots(pdev);
901 if (!cnt) {
902 rc = -ENODEV;
903 pci_dev_busy = 1;
904 goto err_out;
905 }
906
907 jm = kzalloc(sizeof(struct jmb38x_ms)
908 + cnt * sizeof(struct memstick_host *), GFP_KERNEL);
909 if (!jm) {
910 rc = -ENOMEM;
911 goto err_out_int;
912 }
913
914 jm->pdev = pdev;
915 jm->host_cnt = cnt;
916 pci_set_drvdata(pdev, jm);
917
918 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
919 jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt);
920 if (!jm->hosts[cnt])
921 break;
922
923 rc = memstick_add_host(jm->hosts[cnt]);
924
925 if (rc) {
926 jmb38x_ms_free_host(jm->hosts[cnt]);
927 jm->hosts[cnt] = NULL;
928 break;
929 }
930 }
931
932 if (cnt)
933 return 0;
934
935 rc = -ENODEV;
936
937 pci_set_drvdata(pdev, NULL);
938 kfree(jm);
939 err_out_int:
940 pci_release_regions(pdev);
941 err_out:
942 if (!pci_dev_busy)
943 pci_disable_device(pdev);
944 return rc;
945 }
946
947 static void jmb38x_ms_remove(struct pci_dev *dev)
948 {
949 struct jmb38x_ms *jm = pci_get_drvdata(dev);
950 struct jmb38x_ms_host *host;
951 int cnt;
952 unsigned long flags;
953
954 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
955 if (!jm->hosts[cnt])
956 break;
957
958 host = memstick_priv(jm->hosts[cnt]);
959
960 jm->hosts[cnt]->request = jmb38x_ms_dummy_submit;
961 tasklet_kill(&host->notify);
962 writel(0, host->addr + INT_SIGNAL_ENABLE);
963 writel(0, host->addr + INT_STATUS_ENABLE);
964 mmiowb();
965 dev_dbg(&jm->pdev->dev, "interrupts off\n");
966 spin_lock_irqsave(&host->lock, flags);
967 if (host->req) {
968 host->req->error = -ETIME;
969 jmb38x_ms_complete_cmd(jm->hosts[cnt], 1);
970 }
971 spin_unlock_irqrestore(&host->lock, flags);
972
973 memstick_remove_host(jm->hosts[cnt]);
974 dev_dbg(&jm->pdev->dev, "host removed\n");
975
976 jmb38x_ms_free_host(jm->hosts[cnt]);
977 }
978
979 pci_set_drvdata(dev, NULL);
980 pci_release_regions(dev);
981 pci_disable_device(dev);
982 kfree(jm);
983 }
984
985 static struct pci_device_id jmb38x_ms_id_tbl [] = {
986 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_MS, PCI_ANY_ID,
987 PCI_ANY_ID, 0, 0, 0 },
988 { }
989 };
990
991 static struct pci_driver jmb38x_ms_driver = {
992 .name = DRIVER_NAME,
993 .id_table = jmb38x_ms_id_tbl,
994 .probe = jmb38x_ms_probe,
995 .remove = jmb38x_ms_remove,
996 .suspend = jmb38x_ms_suspend,
997 .resume = jmb38x_ms_resume
998 };
999
1000 static int __init jmb38x_ms_init(void)
1001 {
1002 return pci_register_driver(&jmb38x_ms_driver);
1003 }
1004
1005 static void __exit jmb38x_ms_exit(void)
1006 {
1007 pci_unregister_driver(&jmb38x_ms_driver);
1008 }
1009
1010 MODULE_AUTHOR("Alex Dubov");
1011 MODULE_DESCRIPTION("JMicron jmb38x MemoryStick driver");
1012 MODULE_LICENSE("GPL");
1013 MODULE_DEVICE_TABLE(pci, jmb38x_ms_id_tbl);
1014
1015 module_init(jmb38x_ms_init);
1016 module_exit(jmb38x_ms_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree