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memstick: fix setup for JMicron 38x controllers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / memstick / host / jmb38x_ms.c
blobc90ba508225224fc93b2f475341459a0f4cde799
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 char ifmode;
65 unsigned int io_word[2];
66 };
67
68 struct jmb38x_ms {
69 struct pci_dev *pdev;
70 int host_cnt;
71 struct memstick_host *hosts[];
72 };
73
74 #define BLOCK_COUNT_MASK 0xffff0000
75 #define BLOCK_SIZE_MASK 0x00000fff
76
77 #define DMA_CONTROL_ENABLE 0x00000001
78
79 #define TPC_DATA_SEL 0x00008000
80 #define TPC_DIR 0x00004000
81 #define TPC_WAIT_INT 0x00002000
82 #define TPC_GET_INT 0x00000800
83 #define TPC_CODE_SZ_MASK 0x00000700
84 #define TPC_DATA_SZ_MASK 0x00000007
85
86 #define HOST_CONTROL_TDELAY_EN 0x00040000
87 #define HOST_CONTROL_HW_OC_P 0x00010000
88 #define HOST_CONTROL_RESET_REQ 0x00008000
89 #define HOST_CONTROL_REI 0x00004000
90 #define HOST_CONTROL_LED 0x00000400
91 #define HOST_CONTROL_FAST_CLK 0x00000200
92 #define HOST_CONTROL_RESET 0x00000100
93 #define HOST_CONTROL_POWER_EN 0x00000080
94 #define HOST_CONTROL_CLOCK_EN 0x00000040
95 #define HOST_CONTROL_REO 0x00000008
96 #define HOST_CONTROL_IF_SHIFT 4
97
98 #define HOST_CONTROL_IF_SERIAL 0x0
99 #define HOST_CONTROL_IF_PAR4 0x1
100 #define HOST_CONTROL_IF_PAR8 0x3
101
102 #define STATUS_BUSY 0x00080000
103 #define STATUS_MS_DAT7 0x00040000
104 #define STATUS_MS_DAT6 0x00020000
105 #define STATUS_MS_DAT5 0x00010000
106 #define STATUS_MS_DAT4 0x00008000
107 #define STATUS_MS_DAT3 0x00004000
108 #define STATUS_MS_DAT2 0x00002000
109 #define STATUS_MS_DAT1 0x00001000
110 #define STATUS_MS_DAT0 0x00000800
111 #define STATUS_HAS_MEDIA 0x00000400
112 #define STATUS_FIFO_EMPTY 0x00000200
113 #define STATUS_FIFO_FULL 0x00000100
114 #define STATUS_MS_CED 0x00000080
115 #define STATUS_MS_ERR 0x00000040
116 #define STATUS_MS_BRQ 0x00000020
117 #define STATUS_MS_CNK 0x00000001
118
119 #define INT_STATUS_TPC_ERR 0x00080000
120 #define INT_STATUS_CRC_ERR 0x00040000
121 #define INT_STATUS_TIMER_TO 0x00020000
122 #define INT_STATUS_HSK_TO 0x00010000
123 #define INT_STATUS_ANY_ERR 0x00008000
124 #define INT_STATUS_FIFO_WRDY 0x00000080
125 #define INT_STATUS_FIFO_RRDY 0x00000040
126 #define INT_STATUS_MEDIA_OUT 0x00000010
127 #define INT_STATUS_MEDIA_IN 0x00000008
128 #define INT_STATUS_DMA_BOUNDARY 0x00000004
129 #define INT_STATUS_EOTRAN 0x00000002
130 #define INT_STATUS_EOTPC 0x00000001
131
132 #define INT_STATUS_ALL 0x000f801f
133
134 #define PAD_OUTPUT_ENABLE_MS 0x0F3F
135
136 #define PAD_PU_PD_OFF 0x7FFF0000
137 #define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
138 #define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
139
140 #define CLOCK_CONTROL_BY_MMIO 0x00000008
141 #define CLOCK_CONTROL_40MHZ 0x00000001
142 #define CLOCK_CONTROL_50MHZ 0x00000002
143 #define CLOCK_CONTROL_60MHZ 0x00000010
144 #define CLOCK_CONTROL_62_5MHZ 0x00000004
145 #define CLOCK_CONTROL_OFF 0x00000000
146
147 #define PCI_CTL_CLOCK_DLY_ADDR 0x000000b0
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
394 if (host->req->need_card_int) {
395 if (host->ifmode == MEMSTICK_SERIAL)
396 cmd |= TPC_GET_INT;
397 else
398 cmd |= TPC_WAIT_INT;
399 }
400
401 data = host->req->data;
402
403 if (!no_dma)
404 host->cmd_flags |= DMA_DATA;
405
406 if (host->req->long_data) {
407 data_len = host->req->sg.length;
408 } else {
409 data_len = host->req->data_len;
410 host->cmd_flags &= ~DMA_DATA;
411 }
412
413 if (data_len <= 8) {
414 cmd &= ~(TPC_DATA_SEL | 0xf);
415 host->cmd_flags |= REG_DATA;
416 cmd |= data_len & 0xf;
417 host->cmd_flags &= ~DMA_DATA;
418 }
419
420 if (host->cmd_flags & DMA_DATA) {
421 if (1 != pci_map_sg(host->chip->pdev, &host->req->sg, 1,
422 host->req->data_dir == READ
423 ? PCI_DMA_FROMDEVICE
424 : PCI_DMA_TODEVICE)) {
425 host->req->error = -ENOMEM;
426 return host->req->error;
427 }
428 data_len = sg_dma_len(&host->req->sg);
429 writel(sg_dma_address(&host->req->sg),
430 host->addr + DMA_ADDRESS);
431 writel(((1 << 16) & BLOCK_COUNT_MASK)
432 | (data_len & BLOCK_SIZE_MASK),
433 host->addr + BLOCK);
434 writel(DMA_CONTROL_ENABLE, host->addr + DMA_CONTROL);
435 } else if (!(host->cmd_flags & REG_DATA)) {
436 writel(((1 << 16) & BLOCK_COUNT_MASK)
437 | (data_len & BLOCK_SIZE_MASK),
438 host->addr + BLOCK);
439 t_val = readl(host->addr + INT_STATUS_ENABLE);
440 t_val |= host->req->data_dir == READ
441 ? INT_STATUS_FIFO_RRDY
442 : INT_STATUS_FIFO_WRDY;
443
444 writel(t_val, host->addr + INT_STATUS_ENABLE);
445 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
446 } else {
447 cmd &= ~(TPC_DATA_SEL | 0xf);
448 host->cmd_flags |= REG_DATA;
449 cmd |= data_len & 0xf;
450
451 if (host->req->data_dir == WRITE) {
452 jmb38x_ms_transfer_data(host);
453 writel(host->io_word[0], host->addr + TPC_P0);
454 writel(host->io_word[1], host->addr + TPC_P1);
455 }
456 }
457
458 mod_timer(&host->timer, jiffies + host->timeout_jiffies);
459 writel(HOST_CONTROL_LED | readl(host->addr + HOST_CONTROL),
460 host->addr + HOST_CONTROL);
461 host->req->error = 0;
462
463 writel(cmd, host->addr + TPC);
464 dev_dbg(&msh->dev, "executing TPC %08x, len %x\n", cmd, data_len);
465
466 return 0;
467 }
468
469 static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
470 {
471 struct jmb38x_ms_host *host = memstick_priv(msh);
472 unsigned int t_val = 0;
473 int rc;
474
475 del_timer(&host->timer);
476
477 dev_dbg(&msh->dev, "c control %08x\n",
478 readl(host->addr + HOST_CONTROL));
479 dev_dbg(&msh->dev, "c status %08x\n",
480 readl(host->addr + INT_STATUS));
481 dev_dbg(&msh->dev, "c hstatus %08x\n", readl(host->addr + STATUS));
482
483 host->req->int_reg = readl(host->addr + STATUS) & 0xff;
484
485 writel(0, host->addr + BLOCK);
486 writel(0, host->addr + DMA_CONTROL);
487
488 if (host->cmd_flags & DMA_DATA) {
489 pci_unmap_sg(host->chip->pdev, &host->req->sg, 1,
490 host->req->data_dir == READ
491 ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
492 } else {
493 t_val = readl(host->addr + INT_STATUS_ENABLE);
494 if (host->req->data_dir == READ)
495 t_val &= ~INT_STATUS_FIFO_RRDY;
496 else
497 t_val &= ~INT_STATUS_FIFO_WRDY;
498
499 writel(t_val, host->addr + INT_STATUS_ENABLE);
500 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
501 }
502
503 writel((~HOST_CONTROL_LED) & readl(host->addr + HOST_CONTROL),
504 host->addr + HOST_CONTROL);
505
506 if (!last) {
507 do {
508 rc = memstick_next_req(msh, &host->req);
509 } while (!rc && jmb38x_ms_issue_cmd(msh));
510 } else {
511 do {
512 rc = memstick_next_req(msh, &host->req);
513 if (!rc)
514 host->req->error = -ETIME;
515 } while (!rc);
516 }
517 }
518
519 static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
520 {
521 struct memstick_host *msh = dev_id;
522 struct jmb38x_ms_host *host = memstick_priv(msh);
523 unsigned int irq_status;
524
525 spin_lock(&host->lock);
526 irq_status = readl(host->addr + INT_STATUS);
527 dev_dbg(&host->chip->pdev->dev, "irq_status = %08x\n", irq_status);
528 if (irq_status == 0 || irq_status == (~0)) {
529 spin_unlock(&host->lock);
530 return IRQ_NONE;
531 }
532
533 if (host->req) {
534 if (irq_status & INT_STATUS_ANY_ERR) {
535 if (irq_status & INT_STATUS_CRC_ERR)
536 host->req->error = -EILSEQ;
537 else if (irq_status & INT_STATUS_TPC_ERR) {
538 dev_dbg(&host->chip->pdev->dev, "TPC_ERR\n");
539 jmb38x_ms_complete_cmd(msh, 0);
540 } else
541 host->req->error = -ETIME;
542 } else {
543 if (host->cmd_flags & DMA_DATA) {
544 if (irq_status & INT_STATUS_EOTRAN)
545 host->cmd_flags |= FIFO_READY;
546 } else {
547 if (irq_status & (INT_STATUS_FIFO_RRDY
548 | INT_STATUS_FIFO_WRDY))
549 jmb38x_ms_transfer_data(host);
550
551 if (irq_status & INT_STATUS_EOTRAN) {
552 jmb38x_ms_transfer_data(host);
553 host->cmd_flags |= FIFO_READY;
554 }
555 }
556
557 if (irq_status & INT_STATUS_EOTPC) {
558 host->cmd_flags |= CMD_READY;
559 if (host->cmd_flags & REG_DATA) {
560 if (host->req->data_dir == READ) {
561 host->io_word[0]
562 = readl(host->addr
563 + TPC_P0);
564 host->io_word[1]
565 = readl(host->addr
566 + TPC_P1);
567 host->io_pos = 8;
568
569 jmb38x_ms_transfer_data(host);
570 }
571 host->cmd_flags |= FIFO_READY;
572 }
573 }
574 }
575 }
576
577 if (irq_status & (INT_STATUS_MEDIA_IN | INT_STATUS_MEDIA_OUT)) {
578 dev_dbg(&host->chip->pdev->dev, "media changed\n");
579 memstick_detect_change(msh);
580 }
581
582 writel(irq_status, host->addr + INT_STATUS);
583
584 if (host->req
585 && (((host->cmd_flags & CMD_READY)
586 && (host->cmd_flags & FIFO_READY))
587 || host->req->error))
588 jmb38x_ms_complete_cmd(msh, 0);
589
590 spin_unlock(&host->lock);
591 return IRQ_HANDLED;
592 }
593
594 static void jmb38x_ms_abort(unsigned long data)
595 {
596 struct memstick_host *msh = (struct memstick_host *)data;
597 struct jmb38x_ms_host *host = memstick_priv(msh);
598 unsigned long flags;
599
600 dev_dbg(&host->chip->pdev->dev, "abort\n");
601 spin_lock_irqsave(&host->lock, flags);
602 if (host->req) {
603 host->req->error = -ETIME;
604 jmb38x_ms_complete_cmd(msh, 0);
605 }
606 spin_unlock_irqrestore(&host->lock, flags);
607 }
608
609 static void jmb38x_ms_req_tasklet(unsigned long data)
610 {
611 struct memstick_host *msh = (struct memstick_host *)data;
612 struct jmb38x_ms_host *host = memstick_priv(msh);
613 unsigned long flags;
614 int rc;
615
616 spin_lock_irqsave(&host->lock, flags);
617 if (!host->req) {
618 do {
619 rc = memstick_next_req(msh, &host->req);
620 dev_dbg(&host->chip->pdev->dev, "tasklet req %d\n", rc);
621 } while (!rc && jmb38x_ms_issue_cmd(msh));
622 }
623 spin_unlock_irqrestore(&host->lock, flags);
624 }
625
626 static void jmb38x_ms_dummy_submit(struct memstick_host *msh)
627 {
628 return;
629 }
630
631 static void jmb38x_ms_submit_req(struct memstick_host *msh)
632 {
633 struct jmb38x_ms_host *host = memstick_priv(msh);
634
635 tasklet_schedule(&host->notify);
636 }
637
638 static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
639 {
640 int cnt;
641
642 writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN
643 | readl(host->addr + HOST_CONTROL),
644 host->addr + HOST_CONTROL);
645 mmiowb();
646
647 for (cnt = 0; cnt < 20; ++cnt) {
648 if (!(HOST_CONTROL_RESET_REQ
649 & readl(host->addr + HOST_CONTROL)))
650 goto reset_next;
651
652 ndelay(20);
653 }
654 dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n");
655
656 reset_next:
657 writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
658 | readl(host->addr + HOST_CONTROL),
659 host->addr + HOST_CONTROL);
660 mmiowb();
661
662 for (cnt = 0; cnt < 20; ++cnt) {
663 if (!(HOST_CONTROL_RESET
664 & readl(host->addr + HOST_CONTROL)))
665 goto reset_ok;
666
667 ndelay(20);
668 }
669 dev_dbg(&host->chip->pdev->dev, "reset timeout\n");
670 return -EIO;
671
672 reset_ok:
673 mmiowb();
674 writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
675 writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
676 return 0;
677 }
678
679 static int jmb38x_ms_set_param(struct memstick_host *msh,
680 enum memstick_param param,
681 int value)
682 {
683 struct jmb38x_ms_host *host = memstick_priv(msh);
684 unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
685 unsigned int clock_ctl = CLOCK_CONTROL_BY_MMIO, clock_delay = 0;
686 int rc = 0;
687
688 switch (param) {
689 case MEMSTICK_POWER:
690 if (value == MEMSTICK_POWER_ON) {
691 rc = jmb38x_ms_reset(host);
692 if (rc)
693 return rc;
694
695 host_ctl = 7;
696 host_ctl |= HOST_CONTROL_POWER_EN
697 | HOST_CONTROL_CLOCK_EN;
698 writel(host_ctl, host->addr + HOST_CONTROL);
699
700 writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
701 : PAD_PU_PD_ON_MS_SOCK0,
702 host->addr + PAD_PU_PD);
703
704 writel(PAD_OUTPUT_ENABLE_MS,
705 host->addr + PAD_OUTPUT_ENABLE);
706
707 msleep(10);
708 dev_dbg(&host->chip->pdev->dev, "power on\n");
709 } else if (value == MEMSTICK_POWER_OFF) {
710 host_ctl &= ~(HOST_CONTROL_POWER_EN
711 | HOST_CONTROL_CLOCK_EN);
712 writel(host_ctl, host->addr + HOST_CONTROL);
713 writel(0, host->addr + PAD_OUTPUT_ENABLE);
714 writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD);
715 dev_dbg(&host->chip->pdev->dev, "power off\n");
716 } else
717 return -EINVAL;
718 break;
719 case MEMSTICK_INTERFACE:
720 dev_dbg(&host->chip->pdev->dev,
721 "Set Host Interface Mode to %d\n", value);
722 host_ctl &= ~(HOST_CONTROL_FAST_CLK | HOST_CONTROL_REI |
723 HOST_CONTROL_REO);
724 host_ctl |= HOST_CONTROL_TDELAY_EN | HOST_CONTROL_HW_OC_P;
725 host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
726
727 if (value == MEMSTICK_SERIAL) {
728 host_ctl |= HOST_CONTROL_IF_SERIAL
729 << HOST_CONTROL_IF_SHIFT;
730 host_ctl |= HOST_CONTROL_REI;
731 clock_ctl |= CLOCK_CONTROL_40MHZ;
732 clock_delay = 0;
733 } else if (value == MEMSTICK_PAR4) {
734 host_ctl |= HOST_CONTROL_FAST_CLK;
735 host_ctl |= HOST_CONTROL_IF_PAR4
736 << HOST_CONTROL_IF_SHIFT;
737 host_ctl |= HOST_CONTROL_REO;
738 clock_ctl |= CLOCK_CONTROL_40MHZ;
739 clock_delay = 4;
740 } else if (value == MEMSTICK_PAR8) {
741 host_ctl |= HOST_CONTROL_FAST_CLK;
742 host_ctl |= HOST_CONTROL_IF_PAR8
743 << HOST_CONTROL_IF_SHIFT;
744 clock_ctl |= CLOCK_CONTROL_50MHZ;
745 clock_delay = 0;
746 } else
747 return -EINVAL;
748
749 writel(host_ctl, host->addr + HOST_CONTROL);
750 writel(CLOCK_CONTROL_OFF, host->addr + CLOCK_CONTROL);
751 writel(clock_ctl, host->addr + CLOCK_CONTROL);
752 pci_write_config_byte(host->chip->pdev,
753 PCI_CTL_CLOCK_DLY_ADDR + 1,
754 clock_delay);
755 host->ifmode = value;
756 break;
757 };
758 return 0;
759 }
760
761 #ifdef CONFIG_PM
762
763 static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state)
764 {
765 struct jmb38x_ms *jm = pci_get_drvdata(dev);
766 int cnt;
767
768 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
769 if (!jm->hosts[cnt])
770 break;
771 memstick_suspend_host(jm->hosts[cnt]);
772 }
773
774 pci_save_state(dev);
775 pci_enable_wake(dev, pci_choose_state(dev, state), 0);
776 pci_disable_device(dev);
777 pci_set_power_state(dev, pci_choose_state(dev, state));
778 return 0;
779 }
780
781 static int jmb38x_ms_resume(struct pci_dev *dev)
782 {
783 struct jmb38x_ms *jm = pci_get_drvdata(dev);
784 int rc;
785
786 pci_set_power_state(dev, PCI_D0);
787 pci_restore_state(dev);
788 rc = pci_enable_device(dev);
789 if (rc)
790 return rc;
791 pci_set_master(dev);
792
793 pci_read_config_dword(dev, 0xac, &rc);
794 pci_write_config_dword(dev, 0xac, rc | 0x00470000);
795
796 for (rc = 0; rc < jm->host_cnt; ++rc) {
797 if (!jm->hosts[rc])
798 break;
799 memstick_resume_host(jm->hosts[rc]);
800 memstick_detect_change(jm->hosts[rc]);
801 }
802
803 return 0;
804 }
805
806 #else
807
808 #define jmb38x_ms_suspend NULL
809 #define jmb38x_ms_resume NULL
810
811 #endif /* CONFIG_PM */
812
813 static int jmb38x_ms_count_slots(struct pci_dev *pdev)
814 {
815 int cnt, rc = 0;
816
817 for (cnt = 0; cnt < PCI_ROM_RESOURCE; ++cnt) {
818 if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt)))
819 break;
820
821 if (256 != pci_resource_len(pdev, cnt))
822 break;
823
824 ++rc;
825 }
826 return rc;
827 }
828
829 static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt)
830 {
831 struct memstick_host *msh;
832 struct jmb38x_ms_host *host;
833
834 msh = memstick_alloc_host(sizeof(struct jmb38x_ms_host),
835 &jm->pdev->dev);
836 if (!msh)
837 return NULL;
838
839 host = memstick_priv(msh);
840 host->chip = jm;
841 host->addr = ioremap(pci_resource_start(jm->pdev, cnt),
842 pci_resource_len(jm->pdev, cnt));
843 if (!host->addr)
844 goto err_out_free;
845
846 spin_lock_init(&host->lock);
847 host->id = cnt;
848 snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d",
849 host->id);
850 host->irq = jm->pdev->irq;
851 host->timeout_jiffies = msecs_to_jiffies(1000);
852
853 tasklet_init(&host->notify, jmb38x_ms_req_tasklet, (unsigned long)msh);
854 msh->request = jmb38x_ms_submit_req;
855 msh->set_param = jmb38x_ms_set_param;
856
857 msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8;
858
859 setup_timer(&host->timer, jmb38x_ms_abort, (unsigned long)msh);
860
861 if (!request_irq(host->irq, jmb38x_ms_isr, IRQF_SHARED, host->host_id,
862 msh))
863 return msh;
864
865 iounmap(host->addr);
866 err_out_free:
867 kfree(msh);
868 return NULL;
869 }
870
871 static void jmb38x_ms_free_host(struct memstick_host *msh)
872 {
873 struct jmb38x_ms_host *host = memstick_priv(msh);
874
875 free_irq(host->irq, msh);
876 iounmap(host->addr);
877 memstick_free_host(msh);
878 }
879
880 static int jmb38x_ms_probe(struct pci_dev *pdev,
881 const struct pci_device_id *dev_id)
882 {
883 struct jmb38x_ms *jm;
884 int pci_dev_busy = 0;
885 int rc, cnt;
886
887 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
888 if (rc)
889 return rc;
890
891 rc = pci_enable_device(pdev);
892 if (rc)
893 return rc;
894
895 pci_set_master(pdev);
896
897 rc = pci_request_regions(pdev, DRIVER_NAME);
898 if (rc) {
899 pci_dev_busy = 1;
900 goto err_out;
901 }
902
903 pci_read_config_dword(pdev, 0xac, &rc);
904 pci_write_config_dword(pdev, 0xac, rc | 0x00470000);
905
906 cnt = jmb38x_ms_count_slots(pdev);
907 if (!cnt) {
908 rc = -ENODEV;
909 pci_dev_busy = 1;
910 goto err_out;
911 }
912
913 jm = kzalloc(sizeof(struct jmb38x_ms)
914 + cnt * sizeof(struct memstick_host *), GFP_KERNEL);
915 if (!jm) {
916 rc = -ENOMEM;
917 goto err_out_int;
918 }
919
920 jm->pdev = pdev;
921 jm->host_cnt = cnt;
922 pci_set_drvdata(pdev, jm);
923
924 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
925 jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt);
926 if (!jm->hosts[cnt])
927 break;
928
929 rc = memstick_add_host(jm->hosts[cnt]);
930
931 if (rc) {
932 jmb38x_ms_free_host(jm->hosts[cnt]);
933 jm->hosts[cnt] = NULL;
934 break;
935 }
936 }
937
938 if (cnt)
939 return 0;
940
941 rc = -ENODEV;
942
943 pci_set_drvdata(pdev, NULL);
944 kfree(jm);
945 err_out_int:
946 pci_release_regions(pdev);
947 err_out:
948 if (!pci_dev_busy)
949 pci_disable_device(pdev);
950 return rc;
951 }
952
953 static void jmb38x_ms_remove(struct pci_dev *dev)
954 {
955 struct jmb38x_ms *jm = pci_get_drvdata(dev);
956 struct jmb38x_ms_host *host;
957 int cnt;
958 unsigned long flags;
959
960 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
961 if (!jm->hosts[cnt])
962 break;
963
964 host = memstick_priv(jm->hosts[cnt]);
965
966 jm->hosts[cnt]->request = jmb38x_ms_dummy_submit;
967 tasklet_kill(&host->notify);
968 writel(0, host->addr + INT_SIGNAL_ENABLE);
969 writel(0, host->addr + INT_STATUS_ENABLE);
970 mmiowb();
971 dev_dbg(&jm->pdev->dev, "interrupts off\n");
972 spin_lock_irqsave(&host->lock, flags);
973 if (host->req) {
974 host->req->error = -ETIME;
975 jmb38x_ms_complete_cmd(jm->hosts[cnt], 1);
976 }
977 spin_unlock_irqrestore(&host->lock, flags);
978
979 memstick_remove_host(jm->hosts[cnt]);
980 dev_dbg(&jm->pdev->dev, "host removed\n");
981
982 jmb38x_ms_free_host(jm->hosts[cnt]);
983 }
984
985 pci_set_drvdata(dev, NULL);
986 pci_release_regions(dev);
987 pci_disable_device(dev);
988 kfree(jm);
989 }
990
991 static struct pci_device_id jmb38x_ms_id_tbl [] = {
992 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_MS, PCI_ANY_ID,
993 PCI_ANY_ID, 0, 0, 0 },
994 { }
995 };
996
997 static struct pci_driver jmb38x_ms_driver = {
998 .name = DRIVER_NAME,
999 .id_table = jmb38x_ms_id_tbl,
1000 .probe = jmb38x_ms_probe,
1001 .remove = jmb38x_ms_remove,
1002 .suspend = jmb38x_ms_suspend,
1003 .resume = jmb38x_ms_resume
1004 };
1005
1006 static int __init jmb38x_ms_init(void)
1007 {
1008 return pci_register_driver(&jmb38x_ms_driver);
1009 }
1010
1011 static void __exit jmb38x_ms_exit(void)
1012 {
1013 pci_unregister_driver(&jmb38x_ms_driver);
1014 }
1015
1016 MODULE_AUTHOR("Alex Dubov");
1017 MODULE_DESCRIPTION("JMicron jmb38x MemoryStick driver");
1018 MODULE_LICENSE("GPL");
1019 MODULE_DEVICE_TABLE(pci, jmb38x_ms_id_tbl);
1020
1021 module_init(jmb38x_ms_init);
1022 module_exit(jmb38x_ms_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree