?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.19-rc7
[linux-2.6/btrfs-unstable.git] / drivers / memstick / host / jmb38x_ms.c
blobbcdca9fbef51cc802d34b74a4fab19abd308b1bc
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 #include <linux/module.h>
21
22 #define DRIVER_NAME "jmb38x_ms"
23
24 static bool no_dma;
25 module_param(no_dma, bool, 0644);
26
27 enum {
28 DMA_ADDRESS = 0x00,
29 BLOCK = 0x04,
30 DMA_CONTROL = 0x08,
31 TPC_P0 = 0x0c,
32 TPC_P1 = 0x10,
33 TPC = 0x14,
34 HOST_CONTROL = 0x18,
35 DATA = 0x1c,
36 STATUS = 0x20,
37 INT_STATUS = 0x24,
38 INT_STATUS_ENABLE = 0x28,
39 INT_SIGNAL_ENABLE = 0x2c,
40 TIMER = 0x30,
41 TIMER_CONTROL = 0x34,
42 PAD_OUTPUT_ENABLE = 0x38,
43 PAD_PU_PD = 0x3c,
44 CLOCK_DELAY = 0x40,
45 ADMA_ADDRESS = 0x44,
46 CLOCK_CONTROL = 0x48,
47 LED_CONTROL = 0x4c,
48 VERSION = 0x50
49 };
50
51 struct jmb38x_ms_host {
52 struct jmb38x_ms *chip;
53 void __iomem *addr;
54 spinlock_t lock;
55 struct tasklet_struct notify;
56 int id;
57 char host_id[32];
58 int irq;
59 unsigned int block_pos;
60 unsigned long timeout_jiffies;
61 struct timer_list timer;
62 struct memstick_host *msh;
63 struct memstick_request *req;
64 unsigned char cmd_flags;
65 unsigned char io_pos;
66 unsigned char ifmode;
67 unsigned int io_word[2];
68 };
69
70 struct jmb38x_ms {
71 struct pci_dev *pdev;
72 int host_cnt;
73 struct memstick_host *hosts[];
74 };
75
76 #define BLOCK_COUNT_MASK 0xffff0000
77 #define BLOCK_SIZE_MASK 0x00000fff
78
79 #define DMA_CONTROL_ENABLE 0x00000001
80
81 #define TPC_DATA_SEL 0x00008000
82 #define TPC_DIR 0x00004000
83 #define TPC_WAIT_INT 0x00002000
84 #define TPC_GET_INT 0x00000800
85 #define TPC_CODE_SZ_MASK 0x00000700
86 #define TPC_DATA_SZ_MASK 0x00000007
87
88 #define HOST_CONTROL_TDELAY_EN 0x00040000
89 #define HOST_CONTROL_HW_OC_P 0x00010000
90 #define HOST_CONTROL_RESET_REQ 0x00008000
91 #define HOST_CONTROL_REI 0x00004000
92 #define HOST_CONTROL_LED 0x00000400
93 #define HOST_CONTROL_FAST_CLK 0x00000200
94 #define HOST_CONTROL_RESET 0x00000100
95 #define HOST_CONTROL_POWER_EN 0x00000080
96 #define HOST_CONTROL_CLOCK_EN 0x00000040
97 #define HOST_CONTROL_REO 0x00000008
98 #define HOST_CONTROL_IF_SHIFT 4
99
100 #define HOST_CONTROL_IF_SERIAL 0x0
101 #define HOST_CONTROL_IF_PAR4 0x1
102 #define HOST_CONTROL_IF_PAR8 0x3
103
104 #define STATUS_BUSY 0x00080000
105 #define STATUS_MS_DAT7 0x00040000
106 #define STATUS_MS_DAT6 0x00020000
107 #define STATUS_MS_DAT5 0x00010000
108 #define STATUS_MS_DAT4 0x00008000
109 #define STATUS_MS_DAT3 0x00004000
110 #define STATUS_MS_DAT2 0x00002000
111 #define STATUS_MS_DAT1 0x00001000
112 #define STATUS_MS_DAT0 0x00000800
113 #define STATUS_HAS_MEDIA 0x00000400
114 #define STATUS_FIFO_EMPTY 0x00000200
115 #define STATUS_FIFO_FULL 0x00000100
116 #define STATUS_MS_CED 0x00000080
117 #define STATUS_MS_ERR 0x00000040
118 #define STATUS_MS_BRQ 0x00000020
119 #define STATUS_MS_CNK 0x00000001
120
121 #define INT_STATUS_TPC_ERR 0x00080000
122 #define INT_STATUS_CRC_ERR 0x00040000
123 #define INT_STATUS_TIMER_TO 0x00020000
124 #define INT_STATUS_HSK_TO 0x00010000
125 #define INT_STATUS_ANY_ERR 0x00008000
126 #define INT_STATUS_FIFO_WRDY 0x00000080
127 #define INT_STATUS_FIFO_RRDY 0x00000040
128 #define INT_STATUS_MEDIA_OUT 0x00000010
129 #define INT_STATUS_MEDIA_IN 0x00000008
130 #define INT_STATUS_DMA_BOUNDARY 0x00000004
131 #define INT_STATUS_EOTRAN 0x00000002
132 #define INT_STATUS_EOTPC 0x00000001
133
134 #define INT_STATUS_ALL 0x000f801f
135
136 #define PAD_OUTPUT_ENABLE_MS 0x0F3F
137
138 #define PAD_PU_PD_OFF 0x7FFF0000
139 #define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
140 #define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
141
142 #define CLOCK_CONTROL_BY_MMIO 0x00000008
143 #define CLOCK_CONTROL_40MHZ 0x00000001
144 #define CLOCK_CONTROL_50MHZ 0x00000002
145 #define CLOCK_CONTROL_60MHZ 0x00000010
146 #define CLOCK_CONTROL_62_5MHZ 0x00000004
147 #define CLOCK_CONTROL_OFF 0x00000000
148
149 #define PCI_CTL_CLOCK_DLY_ADDR 0x000000b0
150
151 enum {
152 CMD_READY = 0x01,
153 FIFO_READY = 0x02,
154 REG_DATA = 0x04,
155 DMA_DATA = 0x08
156 };
157
158 static unsigned int jmb38x_ms_read_data(struct jmb38x_ms_host *host,
159 unsigned char *buf, unsigned int length)
160 {
161 unsigned int off = 0;
162
163 while (host->io_pos && length) {
164 buf[off++] = host->io_word[0] & 0xff;
165 host->io_word[0] >>= 8;
166 length--;
167 host->io_pos--;
168 }
169
170 if (!length)
171 return off;
172
173 while (!(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
174 if (length < 4)
175 break;
176 *(unsigned int *)(buf + off) = __raw_readl(host->addr + DATA);
177 length -= 4;
178 off += 4;
179 }
180
181 if (length
182 && !(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
183 host->io_word[0] = readl(host->addr + DATA);
184 for (host->io_pos = 4; host->io_pos; --host->io_pos) {
185 buf[off++] = host->io_word[0] & 0xff;
186 host->io_word[0] >>= 8;
187 length--;
188 if (!length)
189 break;
190 }
191 }
192
193 return off;
194 }
195
196 static unsigned int jmb38x_ms_read_reg_data(struct jmb38x_ms_host *host,
197 unsigned char *buf,
198 unsigned int length)
199 {
200 unsigned int off = 0;
201
202 while (host->io_pos > 4 && length) {
203 buf[off++] = host->io_word[0] & 0xff;
204 host->io_word[0] >>= 8;
205 length--;
206 host->io_pos--;
207 }
208
209 if (!length)
210 return off;
211
212 while (host->io_pos && length) {
213 buf[off++] = host->io_word[1] & 0xff;
214 host->io_word[1] >>= 8;
215 length--;
216 host->io_pos--;
217 }
218
219 return off;
220 }
221
222 static unsigned int jmb38x_ms_write_data(struct jmb38x_ms_host *host,
223 unsigned char *buf,
224 unsigned int length)
225 {
226 unsigned int off = 0;
227
228 if (host->io_pos) {
229 while (host->io_pos < 4 && length) {
230 host->io_word[0] |= buf[off++] << (host->io_pos * 8);
231 host->io_pos++;
232 length--;
233 }
234 }
235
236 if (host->io_pos == 4
237 && !(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
238 writel(host->io_word[0], host->addr + DATA);
239 host->io_pos = 0;
240 host->io_word[0] = 0;
241 } else if (host->io_pos) {
242 return off;
243 }
244
245 if (!length)
246 return off;
247
248 while (!(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
249 if (length < 4)
250 break;
251
252 __raw_writel(*(unsigned int *)(buf + off),
253 host->addr + DATA);
254 length -= 4;
255 off += 4;
256 }
257
258 switch (length) {
259 case 3:
260 host->io_word[0] |= buf[off + 2] << 16;
261 host->io_pos++;
262 case 2:
263 host->io_word[0] |= buf[off + 1] << 8;
264 host->io_pos++;
265 case 1:
266 host->io_word[0] |= buf[off];
267 host->io_pos++;
268 }
269
270 off += host->io_pos;
271
272 return off;
273 }
274
275 static unsigned int jmb38x_ms_write_reg_data(struct jmb38x_ms_host *host,
276 unsigned char *buf,
277 unsigned int length)
278 {
279 unsigned int off = 0;
280
281 while (host->io_pos < 4 && length) {
282 host->io_word[0] &= ~(0xff << (host->io_pos * 8));
283 host->io_word[0] |= buf[off++] << (host->io_pos * 8);
284 host->io_pos++;
285 length--;
286 }
287
288 if (!length)
289 return off;
290
291 while (host->io_pos < 8 && length) {
292 host->io_word[1] &= ~(0xff << (host->io_pos * 8));
293 host->io_word[1] |= buf[off++] << (host->io_pos * 8);
294 host->io_pos++;
295 length--;
296 }
297
298 return off;
299 }
300
301 static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
302 {
303 unsigned int length;
304 unsigned int off;
305 unsigned int t_size, p_cnt;
306 unsigned char *buf;
307 struct page *pg;
308 unsigned long flags = 0;
309
310 if (host->req->long_data) {
311 length = host->req->sg.length - host->block_pos;
312 off = host->req->sg.offset + host->block_pos;
313 } else {
314 length = host->req->data_len - host->block_pos;
315 off = 0;
316 }
317
318 while (length) {
319 unsigned int uninitialized_var(p_off);
320
321 if (host->req->long_data) {
322 pg = nth_page(sg_page(&host->req->sg),
323 off >> PAGE_SHIFT);
324 p_off = offset_in_page(off);
325 p_cnt = PAGE_SIZE - p_off;
326 p_cnt = min(p_cnt, length);
327
328 local_irq_save(flags);
329 buf = kmap_atomic(pg) + p_off;
330 } else {
331 buf = host->req->data + host->block_pos;
332 p_cnt = host->req->data_len - host->block_pos;
333 }
334
335 if (host->req->data_dir == WRITE)
336 t_size = !(host->cmd_flags & REG_DATA)
337 ? jmb38x_ms_write_data(host, buf, p_cnt)
338 : jmb38x_ms_write_reg_data(host, buf, p_cnt);
339 else
340 t_size = !(host->cmd_flags & REG_DATA)
341 ? jmb38x_ms_read_data(host, buf, p_cnt)
342 : jmb38x_ms_read_reg_data(host, buf, p_cnt);
343
344 if (host->req->long_data) {
345 kunmap_atomic(buf - p_off);
346 local_irq_restore(flags);
347 }
348
349 if (!t_size)
350 break;
351 host->block_pos += t_size;
352 length -= t_size;
353 off += t_size;
354 }
355
356 if (!length && host->req->data_dir == WRITE) {
357 if (host->cmd_flags & REG_DATA) {
358 writel(host->io_word[0], host->addr + TPC_P0);
359 writel(host->io_word[1], host->addr + TPC_P1);
360 } else if (host->io_pos) {
361 writel(host->io_word[0], host->addr + DATA);
362 }
363 }
364
365 return length;
366 }
367
368 static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
369 {
370 struct jmb38x_ms_host *host = memstick_priv(msh);
371 unsigned char *data;
372 unsigned int data_len, cmd, t_val;
373
374 if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) {
375 dev_dbg(&msh->dev, "no media status\n");
376 host->req->error = -ETIME;
377 return host->req->error;
378 }
379
380 dev_dbg(&msh->dev, "control %08x\n", readl(host->addr + HOST_CONTROL));
381 dev_dbg(&msh->dev, "status %08x\n", readl(host->addr + INT_STATUS));
382 dev_dbg(&msh->dev, "hstatus %08x\n", readl(host->addr + STATUS));
383
384 host->cmd_flags = 0;
385 host->block_pos = 0;
386 host->io_pos = 0;
387 host->io_word[0] = 0;
388 host->io_word[1] = 0;
389
390 cmd = host->req->tpc << 16;
391 cmd |= TPC_DATA_SEL;
392
393 if (host->req->data_dir == READ)
394 cmd |= TPC_DIR;
395
396 if (host->req->need_card_int) {
397 if (host->ifmode == MEMSTICK_SERIAL)
398 cmd |= TPC_GET_INT;
399 else
400 cmd |= TPC_WAIT_INT;
401 }
402
403 data = host->req->data;
404
405 if (!no_dma)
406 host->cmd_flags |= DMA_DATA;
407
408 if (host->req->long_data) {
409 data_len = host->req->sg.length;
410 } else {
411 data_len = host->req->data_len;
412 host->cmd_flags &= ~DMA_DATA;
413 }
414
415 if (data_len <= 8) {
416 cmd &= ~(TPC_DATA_SEL | 0xf);
417 host->cmd_flags |= REG_DATA;
418 cmd |= data_len & 0xf;
419 host->cmd_flags &= ~DMA_DATA;
420 }
421
422 if (host->cmd_flags & DMA_DATA) {
423 if (1 != dma_map_sg(&host->chip->pdev->dev, &host->req->sg, 1,
424 host->req->data_dir == READ
425 ? DMA_FROM_DEVICE
426 : DMA_TO_DEVICE)) {
427 host->req->error = -ENOMEM;
428 return host->req->error;
429 }
430 data_len = sg_dma_len(&host->req->sg);
431 writel(sg_dma_address(&host->req->sg),
432 host->addr + DMA_ADDRESS);
433 writel(((1 << 16) & BLOCK_COUNT_MASK)
434 | (data_len & BLOCK_SIZE_MASK),
435 host->addr + BLOCK);
436 writel(DMA_CONTROL_ENABLE, host->addr + DMA_CONTROL);
437 } else if (!(host->cmd_flags & REG_DATA)) {
438 writel(((1 << 16) & BLOCK_COUNT_MASK)
439 | (data_len & BLOCK_SIZE_MASK),
440 host->addr + BLOCK);
441 t_val = readl(host->addr + INT_STATUS_ENABLE);
442 t_val |= host->req->data_dir == READ
443 ? INT_STATUS_FIFO_RRDY
444 : INT_STATUS_FIFO_WRDY;
445
446 writel(t_val, host->addr + INT_STATUS_ENABLE);
447 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
448 } else {
449 cmd &= ~(TPC_DATA_SEL | 0xf);
450 host->cmd_flags |= REG_DATA;
451 cmd |= data_len & 0xf;
452
453 if (host->req->data_dir == WRITE) {
454 jmb38x_ms_transfer_data(host);
455 writel(host->io_word[0], host->addr + TPC_P0);
456 writel(host->io_word[1], host->addr + TPC_P1);
457 }
458 }
459
460 mod_timer(&host->timer, jiffies + host->timeout_jiffies);
461 writel(HOST_CONTROL_LED | readl(host->addr + HOST_CONTROL),
462 host->addr + HOST_CONTROL);
463 host->req->error = 0;
464
465 writel(cmd, host->addr + TPC);
466 dev_dbg(&msh->dev, "executing TPC %08x, len %x\n", cmd, data_len);
467
468 return 0;
469 }
470
471 static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
472 {
473 struct jmb38x_ms_host *host = memstick_priv(msh);
474 unsigned int t_val = 0;
475 int rc;
476
477 del_timer(&host->timer);
478
479 dev_dbg(&msh->dev, "c control %08x\n",
480 readl(host->addr + HOST_CONTROL));
481 dev_dbg(&msh->dev, "c status %08x\n",
482 readl(host->addr + INT_STATUS));
483 dev_dbg(&msh->dev, "c hstatus %08x\n", readl(host->addr + STATUS));
484
485 host->req->int_reg = readl(host->addr + STATUS) & 0xff;
486
487 writel(0, host->addr + BLOCK);
488 writel(0, host->addr + DMA_CONTROL);
489
490 if (host->cmd_flags & DMA_DATA) {
491 dma_unmap_sg(&host->chip->pdev->dev, &host->req->sg, 1,
492 host->req->data_dir == READ
493 ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
494 } else {
495 t_val = readl(host->addr + INT_STATUS_ENABLE);
496 if (host->req->data_dir == READ)
497 t_val &= ~INT_STATUS_FIFO_RRDY;
498 else
499 t_val &= ~INT_STATUS_FIFO_WRDY;
500
501 writel(t_val, host->addr + INT_STATUS_ENABLE);
502 writel(t_val, host->addr + INT_SIGNAL_ENABLE);
503 }
504
505 writel((~HOST_CONTROL_LED) & readl(host->addr + HOST_CONTROL),
506 host->addr + HOST_CONTROL);
507
508 if (!last) {
509 do {
510 rc = memstick_next_req(msh, &host->req);
511 } while (!rc && jmb38x_ms_issue_cmd(msh));
512 } else {
513 do {
514 rc = memstick_next_req(msh, &host->req);
515 if (!rc)
516 host->req->error = -ETIME;
517 } while (!rc);
518 }
519 }
520
521 static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
522 {
523 struct memstick_host *msh = dev_id;
524 struct jmb38x_ms_host *host = memstick_priv(msh);
525 unsigned int irq_status;
526
527 spin_lock(&host->lock);
528 irq_status = readl(host->addr + INT_STATUS);
529 dev_dbg(&host->chip->pdev->dev, "irq_status = %08x\n", irq_status);
530 if (irq_status == 0 || irq_status == (~0)) {
531 spin_unlock(&host->lock);
532 return IRQ_NONE;
533 }
534
535 if (host->req) {
536 if (irq_status & INT_STATUS_ANY_ERR) {
537 if (irq_status & INT_STATUS_CRC_ERR)
538 host->req->error = -EILSEQ;
539 else if (irq_status & INT_STATUS_TPC_ERR) {
540 dev_dbg(&host->chip->pdev->dev, "TPC_ERR\n");
541 jmb38x_ms_complete_cmd(msh, 0);
542 } else
543 host->req->error = -ETIME;
544 } else {
545 if (host->cmd_flags & DMA_DATA) {
546 if (irq_status & INT_STATUS_EOTRAN)
547 host->cmd_flags |= FIFO_READY;
548 } else {
549 if (irq_status & (INT_STATUS_FIFO_RRDY
550 | INT_STATUS_FIFO_WRDY))
551 jmb38x_ms_transfer_data(host);
552
553 if (irq_status & INT_STATUS_EOTRAN) {
554 jmb38x_ms_transfer_data(host);
555 host->cmd_flags |= FIFO_READY;
556 }
557 }
558
559 if (irq_status & INT_STATUS_EOTPC) {
560 host->cmd_flags |= CMD_READY;
561 if (host->cmd_flags & REG_DATA) {
562 if (host->req->data_dir == READ) {
563 host->io_word[0]
564 = readl(host->addr
565 + TPC_P0);
566 host->io_word[1]
567 = readl(host->addr
568 + TPC_P1);
569 host->io_pos = 8;
570
571 jmb38x_ms_transfer_data(host);
572 }
573 host->cmd_flags |= FIFO_READY;
574 }
575 }
576 }
577 }
578
579 if (irq_status & (INT_STATUS_MEDIA_IN | INT_STATUS_MEDIA_OUT)) {
580 dev_dbg(&host->chip->pdev->dev, "media changed\n");
581 memstick_detect_change(msh);
582 }
583
584 writel(irq_status, host->addr + INT_STATUS);
585
586 if (host->req
587 && (((host->cmd_flags & CMD_READY)
588 && (host->cmd_flags & FIFO_READY))
589 || host->req->error))
590 jmb38x_ms_complete_cmd(msh, 0);
591
592 spin_unlock(&host->lock);
593 return IRQ_HANDLED;
594 }
595
596 static void jmb38x_ms_abort(struct timer_list *t)
597 {
598 struct jmb38x_ms_host *host = from_timer(host, t, timer);
599 struct memstick_host *msh = host->msh;
600 unsigned long flags;
601
602 dev_dbg(&host->chip->pdev->dev, "abort\n");
603 spin_lock_irqsave(&host->lock, flags);
604 if (host->req) {
605 host->req->error = -ETIME;
606 jmb38x_ms_complete_cmd(msh, 0);
607 }
608 spin_unlock_irqrestore(&host->lock, flags);
609 }
610
611 static void jmb38x_ms_req_tasklet(unsigned long data)
612 {
613 struct memstick_host *msh = (struct memstick_host *)data;
614 struct jmb38x_ms_host *host = memstick_priv(msh);
615 unsigned long flags;
616 int rc;
617
618 spin_lock_irqsave(&host->lock, flags);
619 if (!host->req) {
620 do {
621 rc = memstick_next_req(msh, &host->req);
622 dev_dbg(&host->chip->pdev->dev, "tasklet req %d\n", rc);
623 } while (!rc && jmb38x_ms_issue_cmd(msh));
624 }
625 spin_unlock_irqrestore(&host->lock, flags);
626 }
627
628 static void jmb38x_ms_dummy_submit(struct memstick_host *msh)
629 {
630 return;
631 }
632
633 static void jmb38x_ms_submit_req(struct memstick_host *msh)
634 {
635 struct jmb38x_ms_host *host = memstick_priv(msh);
636
637 tasklet_schedule(&host->notify);
638 }
639
640 static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
641 {
642 int cnt;
643
644 writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN
645 | readl(host->addr + HOST_CONTROL),
646 host->addr + HOST_CONTROL);
647 mmiowb();
648
649 for (cnt = 0; cnt < 20; ++cnt) {
650 if (!(HOST_CONTROL_RESET_REQ
651 & readl(host->addr + HOST_CONTROL)))
652 goto reset_next;
653
654 ndelay(20);
655 }
656 dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n");
657
658 reset_next:
659 writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
660 | readl(host->addr + HOST_CONTROL),
661 host->addr + HOST_CONTROL);
662 mmiowb();
663
664 for (cnt = 0; cnt < 20; ++cnt) {
665 if (!(HOST_CONTROL_RESET
666 & readl(host->addr + HOST_CONTROL)))
667 goto reset_ok;
668
669 ndelay(20);
670 }
671 dev_dbg(&host->chip->pdev->dev, "reset timeout\n");
672 return -EIO;
673
674 reset_ok:
675 mmiowb();
676 writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
677 writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
678 return 0;
679 }
680
681 static int jmb38x_ms_set_param(struct memstick_host *msh,
682 enum memstick_param param,
683 int value)
684 {
685 struct jmb38x_ms_host *host = memstick_priv(msh);
686 unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
687 unsigned int clock_ctl = CLOCK_CONTROL_BY_MMIO, clock_delay = 0;
688 int rc = 0;
689
690 switch (param) {
691 case MEMSTICK_POWER:
692 if (value == MEMSTICK_POWER_ON) {
693 rc = jmb38x_ms_reset(host);
694 if (rc)
695 return rc;
696
697 host_ctl = 7;
698 host_ctl |= HOST_CONTROL_POWER_EN
699 | HOST_CONTROL_CLOCK_EN;
700 writel(host_ctl, host->addr + HOST_CONTROL);
701
702 writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
703 : PAD_PU_PD_ON_MS_SOCK0,
704 host->addr + PAD_PU_PD);
705
706 writel(PAD_OUTPUT_ENABLE_MS,
707 host->addr + PAD_OUTPUT_ENABLE);
708
709 msleep(10);
710 dev_dbg(&host->chip->pdev->dev, "power on\n");
711 } else if (value == MEMSTICK_POWER_OFF) {
712 host_ctl &= ~(HOST_CONTROL_POWER_EN
713 | HOST_CONTROL_CLOCK_EN);
714 writel(host_ctl, host->addr + HOST_CONTROL);
715 writel(0, host->addr + PAD_OUTPUT_ENABLE);
716 writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD);
717 dev_dbg(&host->chip->pdev->dev, "power off\n");
718 } else
719 return -EINVAL;
720 break;
721 case MEMSTICK_INTERFACE:
722 dev_dbg(&host->chip->pdev->dev,
723 "Set Host Interface Mode to %d\n", value);
724 host_ctl &= ~(HOST_CONTROL_FAST_CLK | HOST_CONTROL_REI |
725 HOST_CONTROL_REO);
726 host_ctl |= HOST_CONTROL_TDELAY_EN | HOST_CONTROL_HW_OC_P;
727 host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
728
729 if (value == MEMSTICK_SERIAL) {
730 host_ctl |= HOST_CONTROL_IF_SERIAL
731 << HOST_CONTROL_IF_SHIFT;
732 host_ctl |= HOST_CONTROL_REI;
733 clock_ctl |= CLOCK_CONTROL_40MHZ;
734 clock_delay = 0;
735 } else if (value == MEMSTICK_PAR4) {
736 host_ctl |= HOST_CONTROL_FAST_CLK;
737 host_ctl |= HOST_CONTROL_IF_PAR4
738 << HOST_CONTROL_IF_SHIFT;
739 host_ctl |= HOST_CONTROL_REO;
740 clock_ctl |= CLOCK_CONTROL_40MHZ;
741 clock_delay = 4;
742 } else if (value == MEMSTICK_PAR8) {
743 host_ctl |= HOST_CONTROL_FAST_CLK;
744 host_ctl |= HOST_CONTROL_IF_PAR8
745 << HOST_CONTROL_IF_SHIFT;
746 clock_ctl |= CLOCK_CONTROL_50MHZ;
747 clock_delay = 0;
748 } else
749 return -EINVAL;
750
751 writel(host_ctl, host->addr + HOST_CONTROL);
752 writel(CLOCK_CONTROL_OFF, host->addr + CLOCK_CONTROL);
753 writel(clock_ctl, host->addr + CLOCK_CONTROL);
754 pci_write_config_byte(host->chip->pdev,
755 PCI_CTL_CLOCK_DLY_ADDR + 1,
756 clock_delay);
757 host->ifmode = value;
758 break;
759 };
760 return 0;
761 }
762
763 #define PCI_PMOS0_CONTROL 0xae
764 #define PMOS0_ENABLE 0x01
765 #define PMOS0_OVERCURRENT_LEVEL_2_4V 0x06
766 #define PMOS0_EN_OVERCURRENT_DEBOUNCE 0x40
767 #define PMOS0_SW_LED_POLARITY_ENABLE 0x80
768 #define PMOS0_ACTIVE_BITS (PMOS0_ENABLE | PMOS0_EN_OVERCURRENT_DEBOUNCE | \
769 PMOS0_OVERCURRENT_LEVEL_2_4V)
770 #define PCI_PMOS1_CONTROL 0xbd
771 #define PMOS1_ACTIVE_BITS 0x4a
772 #define PCI_CLOCK_CTL 0xb9
773
774 static int jmb38x_ms_pmos(struct pci_dev *pdev, int flag)
775 {
776 unsigned char val;
777
778 pci_read_config_byte(pdev, PCI_PMOS0_CONTROL, &val);
779 if (flag)
780 val |= PMOS0_ACTIVE_BITS;
781 else
782 val &= ~PMOS0_ACTIVE_BITS;
783 pci_write_config_byte(pdev, PCI_PMOS0_CONTROL, val);
784 dev_dbg(&pdev->dev, "JMB38x: set PMOS0 val 0x%x\n", val);
785
786 if (pci_resource_flags(pdev, 1)) {
787 pci_read_config_byte(pdev, PCI_PMOS1_CONTROL, &val);
788 if (flag)
789 val |= PMOS1_ACTIVE_BITS;
790 else
791 val &= ~PMOS1_ACTIVE_BITS;
792 pci_write_config_byte(pdev, PCI_PMOS1_CONTROL, val);
793 dev_dbg(&pdev->dev, "JMB38x: set PMOS1 val 0x%x\n", val);
794 }
795
796 pci_read_config_byte(pdev, PCI_CLOCK_CTL, &val);
797 pci_write_config_byte(pdev, PCI_CLOCK_CTL, val & ~0x0f);
798 pci_write_config_byte(pdev, PCI_CLOCK_CTL, val | 0x01);
799 dev_dbg(&pdev->dev, "Clock Control by PCI config is disabled!\n");
800
801 return 0;
802 }
803
804 #ifdef CONFIG_PM
805
806 static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state)
807 {
808 struct jmb38x_ms *jm = pci_get_drvdata(dev);
809 int cnt;
810
811 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
812 if (!jm->hosts[cnt])
813 break;
814 memstick_suspend_host(jm->hosts[cnt]);
815 }
816
817 pci_save_state(dev);
818 pci_enable_wake(dev, pci_choose_state(dev, state), 0);
819 pci_disable_device(dev);
820 pci_set_power_state(dev, pci_choose_state(dev, state));
821 return 0;
822 }
823
824 static int jmb38x_ms_resume(struct pci_dev *dev)
825 {
826 struct jmb38x_ms *jm = pci_get_drvdata(dev);
827 int rc;
828
829 pci_set_power_state(dev, PCI_D0);
830 pci_restore_state(dev);
831 rc = pci_enable_device(dev);
832 if (rc)
833 return rc;
834 pci_set_master(dev);
835
836 jmb38x_ms_pmos(dev, 1);
837
838 for (rc = 0; rc < jm->host_cnt; ++rc) {
839 if (!jm->hosts[rc])
840 break;
841 memstick_resume_host(jm->hosts[rc]);
842 memstick_detect_change(jm->hosts[rc]);
843 }
844
845 return 0;
846 }
847
848 #else
849
850 #define jmb38x_ms_suspend NULL
851 #define jmb38x_ms_resume NULL
852
853 #endif /* CONFIG_PM */
854
855 static int jmb38x_ms_count_slots(struct pci_dev *pdev)
856 {
857 int cnt, rc = 0;
858
859 for (cnt = 0; cnt < PCI_ROM_RESOURCE; ++cnt) {
860 if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt)))
861 break;
862
863 if (256 != pci_resource_len(pdev, cnt))
864 break;
865
866 ++rc;
867 }
868 return rc;
869 }
870
871 static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt)
872 {
873 struct memstick_host *msh;
874 struct jmb38x_ms_host *host;
875
876 msh = memstick_alloc_host(sizeof(struct jmb38x_ms_host),
877 &jm->pdev->dev);
878 if (!msh)
879 return NULL;
880
881 host = memstick_priv(msh);
882 host->msh = msh;
883 host->chip = jm;
884 host->addr = ioremap(pci_resource_start(jm->pdev, cnt),
885 pci_resource_len(jm->pdev, cnt));
886 if (!host->addr)
887 goto err_out_free;
888
889 spin_lock_init(&host->lock);
890 host->id = cnt;
891 snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d",
892 host->id);
893 host->irq = jm->pdev->irq;
894 host->timeout_jiffies = msecs_to_jiffies(1000);
895
896 tasklet_init(&host->notify, jmb38x_ms_req_tasklet, (unsigned long)msh);
897 msh->request = jmb38x_ms_submit_req;
898 msh->set_param = jmb38x_ms_set_param;
899
900 msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8;
901
902 timer_setup(&host->timer, jmb38x_ms_abort, 0);
903
904 if (!request_irq(host->irq, jmb38x_ms_isr, IRQF_SHARED, host->host_id,
905 msh))
906 return msh;
907
908 iounmap(host->addr);
909 err_out_free:
910 kfree(msh);
911 return NULL;
912 }
913
914 static void jmb38x_ms_free_host(struct memstick_host *msh)
915 {
916 struct jmb38x_ms_host *host = memstick_priv(msh);
917
918 free_irq(host->irq, msh);
919 iounmap(host->addr);
920 memstick_free_host(msh);
921 }
922
923 static int jmb38x_ms_probe(struct pci_dev *pdev,
924 const struct pci_device_id *dev_id)
925 {
926 struct jmb38x_ms *jm;
927 int pci_dev_busy = 0;
928 int rc, cnt;
929
930 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
931 if (rc)
932 return rc;
933
934 rc = pci_enable_device(pdev);
935 if (rc)
936 return rc;
937
938 pci_set_master(pdev);
939
940 rc = pci_request_regions(pdev, DRIVER_NAME);
941 if (rc) {
942 pci_dev_busy = 1;
943 goto err_out;
944 }
945
946 jmb38x_ms_pmos(pdev, 1);
947
948 cnt = jmb38x_ms_count_slots(pdev);
949 if (!cnt) {
950 rc = -ENODEV;
951 pci_dev_busy = 1;
952 goto err_out;
953 }
954
955 jm = kzalloc(sizeof(struct jmb38x_ms)
956 + cnt * sizeof(struct memstick_host *), GFP_KERNEL);
957 if (!jm) {
958 rc = -ENOMEM;
959 goto err_out_int;
960 }
961
962 jm->pdev = pdev;
963 jm->host_cnt = cnt;
964 pci_set_drvdata(pdev, jm);
965
966 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
967 jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt);
968 if (!jm->hosts[cnt])
969 break;
970
971 rc = memstick_add_host(jm->hosts[cnt]);
972
973 if (rc) {
974 jmb38x_ms_free_host(jm->hosts[cnt]);
975 jm->hosts[cnt] = NULL;
976 break;
977 }
978 }
979
980 if (cnt)
981 return 0;
982
983 rc = -ENODEV;
984
985 pci_set_drvdata(pdev, NULL);
986 kfree(jm);
987 err_out_int:
988 pci_release_regions(pdev);
989 err_out:
990 if (!pci_dev_busy)
991 pci_disable_device(pdev);
992 return rc;
993 }
994
995 static void jmb38x_ms_remove(struct pci_dev *dev)
996 {
997 struct jmb38x_ms *jm = pci_get_drvdata(dev);
998 struct jmb38x_ms_host *host;
999 int cnt;
1000 unsigned long flags;
1001
1002 for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
1003 if (!jm->hosts[cnt])
1004 break;
1005
1006 host = memstick_priv(jm->hosts[cnt]);
1007
1008 jm->hosts[cnt]->request = jmb38x_ms_dummy_submit;
1009 tasklet_kill(&host->notify);
1010 writel(0, host->addr + INT_SIGNAL_ENABLE);
1011 writel(0, host->addr + INT_STATUS_ENABLE);
1012 mmiowb();
1013 dev_dbg(&jm->pdev->dev, "interrupts off\n");
1014 spin_lock_irqsave(&host->lock, flags);
1015 if (host->req) {
1016 host->req->error = -ETIME;
1017 jmb38x_ms_complete_cmd(jm->hosts[cnt], 1);
1018 }
1019 spin_unlock_irqrestore(&host->lock, flags);
1020
1021 memstick_remove_host(jm->hosts[cnt]);
1022 dev_dbg(&jm->pdev->dev, "host removed\n");
1023
1024 jmb38x_ms_free_host(jm->hosts[cnt]);
1025 }
1026
1027 jmb38x_ms_pmos(dev, 0);
1028
1029 pci_set_drvdata(dev, NULL);
1030 pci_release_regions(dev);
1031 pci_disable_device(dev);
1032 kfree(jm);
1033 }
1034
1035 static struct pci_device_id jmb38x_ms_id_tbl [] = {
1036 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_MS) },
1037 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB385_MS) },
1038 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB390_MS) },
1039 { }
1040 };
1041
1042 static struct pci_driver jmb38x_ms_driver = {
1043 .name = DRIVER_NAME,
1044 .id_table = jmb38x_ms_id_tbl,
1045 .probe = jmb38x_ms_probe,
1046 .remove = jmb38x_ms_remove,
1047 .suspend = jmb38x_ms_suspend,
1048 .resume = jmb38x_ms_resume
1049 };
1050
1051 module_pci_driver(jmb38x_ms_driver);
1052
1053 MODULE_AUTHOR("Alex Dubov");
1054 MODULE_DESCRIPTION("JMicron jmb38x MemoryStick driver");
1055 MODULE_LICENSE("GPL");
1056 MODULE_DEVICE_TABLE(pci, jmb38x_ms_id_tbl);
(deprecated) Btrfs devel tree