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60fdd931 AD |
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> | |
d3597ea2 | 15 | #include <linux/dma-mapping.h> |
60fdd931 AD |
16 | #include <linux/delay.h> |
17 | #include <linux/highmem.h> | |
18 | #include <linux/memstick.h> | |
19 | ||
20 | #define DRIVER_NAME "jmb38x_ms" | |
21 | ||
22 | static int no_dma; | |
23 | module_param(no_dma, bool, 0644); | |
24 | ||
25 | enum { | |
26 | DMA_ADDRESS = 0x00, | |
27 | BLOCK = 0x04, | |
28 | DMA_CONTROL = 0x08, | |
29 | TPC_P0 = 0x0c, | |
30 | TPC_P1 = 0x10, | |
31 | TPC = 0x14, | |
32 | HOST_CONTROL = 0x18, | |
33 | DATA = 0x1c, | |
34 | STATUS = 0x20, | |
35 | INT_STATUS = 0x24, | |
36 | INT_STATUS_ENABLE = 0x28, | |
37 | INT_SIGNAL_ENABLE = 0x2c, | |
38 | TIMER = 0x30, | |
39 | TIMER_CONTROL = 0x34, | |
40 | PAD_OUTPUT_ENABLE = 0x38, | |
41 | PAD_PU_PD = 0x3c, | |
42 | CLOCK_DELAY = 0x40, | |
43 | ADMA_ADDRESS = 0x44, | |
44 | CLOCK_CONTROL = 0x48, | |
45 | LED_CONTROL = 0x4c, | |
46 | VERSION = 0x50 | |
47 | }; | |
48 | ||
49 | struct jmb38x_ms_host { | |
50 | struct jmb38x_ms *chip; | |
51 | void __iomem *addr; | |
52 | spinlock_t lock; | |
f1d82698 | 53 | struct tasklet_struct notify; |
60fdd931 | 54 | int id; |
b98cb4b7 | 55 | char host_id[32]; |
60fdd931 AD |
56 | int irq; |
57 | unsigned int block_pos; | |
58 | unsigned long timeout_jiffies; | |
59 | struct timer_list timer; | |
60 | struct memstick_request *req; | |
60fdd931 AD |
61 | unsigned char cmd_flags; |
62 | unsigned char io_pos; | |
63 | unsigned int io_word[2]; | |
64 | }; | |
65 | ||
66 | struct jmb38x_ms { | |
67 | struct pci_dev *pdev; | |
68 | int host_cnt; | |
69 | struct memstick_host *hosts[]; | |
70 | }; | |
71 | ||
72 | #define BLOCK_COUNT_MASK 0xffff0000 | |
73 | #define BLOCK_SIZE_MASK 0x00000fff | |
74 | ||
75 | #define DMA_CONTROL_ENABLE 0x00000001 | |
76 | ||
77 | #define TPC_DATA_SEL 0x00008000 | |
78 | #define TPC_DIR 0x00004000 | |
79 | #define TPC_WAIT_INT 0x00002000 | |
80 | #define TPC_GET_INT 0x00000800 | |
81 | #define TPC_CODE_SZ_MASK 0x00000700 | |
82 | #define TPC_DATA_SZ_MASK 0x00000007 | |
83 | ||
84 | #define HOST_CONTROL_RESET_REQ 0x00008000 | |
85 | #define HOST_CONTROL_REI 0x00004000 | |
86 | #define HOST_CONTROL_LED 0x00000400 | |
87 | #define HOST_CONTROL_FAST_CLK 0x00000200 | |
88 | #define HOST_CONTROL_RESET 0x00000100 | |
89 | #define HOST_CONTROL_POWER_EN 0x00000080 | |
90 | #define HOST_CONTROL_CLOCK_EN 0x00000040 | |
91 | #define HOST_CONTROL_IF_SHIFT 4 | |
92 | ||
93 | #define HOST_CONTROL_IF_SERIAL 0x0 | |
94 | #define HOST_CONTROL_IF_PAR4 0x1 | |
95 | #define HOST_CONTROL_IF_PAR8 0x3 | |
96 | ||
ead70773 AD |
97 | #define STATUS_BUSY 0x00080000 |
98 | #define STATUS_MS_DAT7 0x00040000 | |
99 | #define STATUS_MS_DAT6 0x00020000 | |
100 | #define STATUS_MS_DAT5 0x00010000 | |
101 | #define STATUS_MS_DAT4 0x00008000 | |
102 | #define STATUS_MS_DAT3 0x00004000 | |
103 | #define STATUS_MS_DAT2 0x00002000 | |
104 | #define STATUS_MS_DAT1 0x00001000 | |
105 | #define STATUS_MS_DAT0 0x00000800 | |
60fdd931 AD |
106 | #define STATUS_HAS_MEDIA 0x00000400 |
107 | #define STATUS_FIFO_EMPTY 0x00000200 | |
108 | #define STATUS_FIFO_FULL 0x00000100 | |
ead70773 AD |
109 | #define STATUS_MS_CED 0x00000080 |
110 | #define STATUS_MS_ERR 0x00000040 | |
111 | #define STATUS_MS_BRQ 0x00000020 | |
112 | #define STATUS_MS_CNK 0x00000001 | |
60fdd931 AD |
113 | |
114 | #define INT_STATUS_TPC_ERR 0x00080000 | |
115 | #define INT_STATUS_CRC_ERR 0x00040000 | |
116 | #define INT_STATUS_TIMER_TO 0x00020000 | |
117 | #define INT_STATUS_HSK_TO 0x00010000 | |
118 | #define INT_STATUS_ANY_ERR 0x00008000 | |
119 | #define INT_STATUS_FIFO_WRDY 0x00000080 | |
120 | #define INT_STATUS_FIFO_RRDY 0x00000040 | |
121 | #define INT_STATUS_MEDIA_OUT 0x00000010 | |
122 | #define INT_STATUS_MEDIA_IN 0x00000008 | |
123 | #define INT_STATUS_DMA_BOUNDARY 0x00000004 | |
124 | #define INT_STATUS_EOTRAN 0x00000002 | |
125 | #define INT_STATUS_EOTPC 0x00000001 | |
126 | ||
127 | #define INT_STATUS_ALL 0x000f801f | |
128 | ||
129 | #define PAD_OUTPUT_ENABLE_MS 0x0F3F | |
130 | ||
131 | #define PAD_PU_PD_OFF 0x7FFF0000 | |
132 | #define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000 | |
133 | #define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000 | |
134 | ||
cf821e8f AD |
135 | #define CLOCK_CONTROL_40MHZ 0x00000001 |
136 | #define CLOCK_CONTROL_50MHZ 0x00000002 | |
137 | #define CLOCK_CONTROL_60MHZ 0x00000008 | |
138 | #define CLOCK_CONTROL_62_5MHZ 0x0000000c | |
139 | #define CLOCK_CONTROL_OFF 0x00000000 | |
140 | ||
60fdd931 AD |
141 | enum { |
142 | CMD_READY = 0x01, | |
143 | FIFO_READY = 0x02, | |
144 | REG_DATA = 0x04, | |
ead70773 | 145 | DMA_DATA = 0x08 |
60fdd931 AD |
146 | }; |
147 | ||
148 | static unsigned int jmb38x_ms_read_data(struct jmb38x_ms_host *host, | |
149 | unsigned char *buf, unsigned int length) | |
150 | { | |
151 | unsigned int off = 0; | |
152 | ||
153 | while (host->io_pos && length) { | |
154 | buf[off++] = host->io_word[0] & 0xff; | |
155 | host->io_word[0] >>= 8; | |
156 | length--; | |
157 | host->io_pos--; | |
158 | } | |
159 | ||
160 | if (!length) | |
161 | return off; | |
162 | ||
163 | while (!(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) { | |
164 | if (length < 4) | |
165 | break; | |
166 | *(unsigned int *)(buf + off) = __raw_readl(host->addr + DATA); | |
167 | length -= 4; | |
168 | off += 4; | |
169 | } | |
170 | ||
171 | if (length | |
172 | && !(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) { | |
173 | host->io_word[0] = readl(host->addr + DATA); | |
174 | for (host->io_pos = 4; host->io_pos; --host->io_pos) { | |
175 | buf[off++] = host->io_word[0] & 0xff; | |
176 | host->io_word[0] >>= 8; | |
177 | length--; | |
178 | if (!length) | |
179 | break; | |
180 | } | |
181 | } | |
182 | ||
183 | return off; | |
184 | } | |
185 | ||
186 | static unsigned int jmb38x_ms_read_reg_data(struct jmb38x_ms_host *host, | |
187 | unsigned char *buf, | |
188 | unsigned int length) | |
189 | { | |
190 | unsigned int off = 0; | |
191 | ||
192 | while (host->io_pos > 4 && length) { | |
193 | buf[off++] = host->io_word[0] & 0xff; | |
194 | host->io_word[0] >>= 8; | |
195 | length--; | |
196 | host->io_pos--; | |
197 | } | |
198 | ||
199 | if (!length) | |
200 | return off; | |
201 | ||
202 | while (host->io_pos && length) { | |
203 | buf[off++] = host->io_word[1] & 0xff; | |
204 | host->io_word[1] >>= 8; | |
205 | length--; | |
206 | host->io_pos--; | |
207 | } | |
208 | ||
209 | return off; | |
210 | } | |
211 | ||
212 | static unsigned int jmb38x_ms_write_data(struct jmb38x_ms_host *host, | |
213 | unsigned char *buf, | |
214 | unsigned int length) | |
215 | { | |
216 | unsigned int off = 0; | |
217 | ||
218 | if (host->io_pos) { | |
219 | while (host->io_pos < 4 && length) { | |
220 | host->io_word[0] |= buf[off++] << (host->io_pos * 8); | |
221 | host->io_pos++; | |
222 | length--; | |
223 | } | |
224 | } | |
225 | ||
226 | if (host->io_pos == 4 | |
227 | && !(STATUS_FIFO_FULL & readl(host->addr + STATUS))) { | |
228 | writel(host->io_word[0], host->addr + DATA); | |
229 | host->io_pos = 0; | |
230 | host->io_word[0] = 0; | |
231 | } else if (host->io_pos) { | |
232 | return off; | |
233 | } | |
234 | ||
235 | if (!length) | |
236 | return off; | |
237 | ||
238 | while (!(STATUS_FIFO_FULL & readl(host->addr + STATUS))) { | |
239 | if (length < 4) | |
240 | break; | |
241 | ||
242 | __raw_writel(*(unsigned int *)(buf + off), | |
243 | host->addr + DATA); | |
244 | length -= 4; | |
245 | off += 4; | |
246 | } | |
247 | ||
248 | switch (length) { | |
249 | case 3: | |
250 | host->io_word[0] |= buf[off + 2] << 16; | |
251 | host->io_pos++; | |
252 | case 2: | |
253 | host->io_word[0] |= buf[off + 1] << 8; | |
254 | host->io_pos++; | |
255 | case 1: | |
256 | host->io_word[0] |= buf[off]; | |
257 | host->io_pos++; | |
258 | } | |
259 | ||
260 | off += host->io_pos; | |
261 | ||
262 | return off; | |
263 | } | |
264 | ||
265 | static unsigned int jmb38x_ms_write_reg_data(struct jmb38x_ms_host *host, | |
266 | unsigned char *buf, | |
267 | unsigned int length) | |
268 | { | |
269 | unsigned int off = 0; | |
270 | ||
271 | while (host->io_pos < 4 && length) { | |
272 | host->io_word[0] &= ~(0xff << (host->io_pos * 8)); | |
273 | host->io_word[0] |= buf[off++] << (host->io_pos * 8); | |
274 | host->io_pos++; | |
275 | length--; | |
276 | } | |
277 | ||
278 | if (!length) | |
279 | return off; | |
280 | ||
281 | while (host->io_pos < 8 && length) { | |
282 | host->io_word[1] &= ~(0xff << (host->io_pos * 8)); | |
283 | host->io_word[1] |= buf[off++] << (host->io_pos * 8); | |
284 | host->io_pos++; | |
285 | length--; | |
286 | } | |
287 | ||
288 | return off; | |
289 | } | |
290 | ||
291 | static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host) | |
292 | { | |
293 | unsigned int length; | |
294 | unsigned int off; | |
8195096b | 295 | unsigned int t_size, p_cnt; |
60fdd931 AD |
296 | unsigned char *buf; |
297 | struct page *pg; | |
298 | unsigned long flags = 0; | |
299 | ||
300 | if (host->req->long_data) { | |
301 | length = host->req->sg.length - host->block_pos; | |
302 | off = host->req->sg.offset + host->block_pos; | |
303 | } else { | |
304 | length = host->req->data_len - host->block_pos; | |
305 | off = 0; | |
306 | } | |
307 | ||
308 | while (length) { | |
8195096b AM |
309 | unsigned int uninitialized_var(p_off); |
310 | ||
60fdd931 AD |
311 | if (host->req->long_data) { |
312 | pg = nth_page(sg_page(&host->req->sg), | |
313 | off >> PAGE_SHIFT); | |
314 | p_off = offset_in_page(off); | |
315 | p_cnt = PAGE_SIZE - p_off; | |
316 | p_cnt = min(p_cnt, length); | |
317 | ||
318 | local_irq_save(flags); | |
319 | buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off; | |
320 | } else { | |
321 | buf = host->req->data + host->block_pos; | |
322 | p_cnt = host->req->data_len - host->block_pos; | |
323 | } | |
324 | ||
325 | if (host->req->data_dir == WRITE) | |
326 | t_size = !(host->cmd_flags & REG_DATA) | |
327 | ? jmb38x_ms_write_data(host, buf, p_cnt) | |
328 | : jmb38x_ms_write_reg_data(host, buf, p_cnt); | |
329 | else | |
330 | t_size = !(host->cmd_flags & REG_DATA) | |
331 | ? jmb38x_ms_read_data(host, buf, p_cnt) | |
332 | : jmb38x_ms_read_reg_data(host, buf, p_cnt); | |
333 | ||
334 | if (host->req->long_data) { | |
335 | kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ); | |
336 | local_irq_restore(flags); | |
337 | } | |
338 | ||
339 | if (!t_size) | |
340 | break; | |
341 | host->block_pos += t_size; | |
342 | length -= t_size; | |
343 | off += t_size; | |
344 | } | |
345 | ||
346 | if (!length && host->req->data_dir == WRITE) { | |
347 | if (host->cmd_flags & REG_DATA) { | |
348 | writel(host->io_word[0], host->addr + TPC_P0); | |
349 | writel(host->io_word[1], host->addr + TPC_P1); | |
350 | } else if (host->io_pos) { | |
351 | writel(host->io_word[0], host->addr + DATA); | |
352 | } | |
353 | } | |
354 | ||
355 | return length; | |
356 | } | |
357 | ||
358 | static int jmb38x_ms_issue_cmd(struct memstick_host *msh) | |
359 | { | |
360 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
361 | unsigned char *data; | |
362 | unsigned int data_len, cmd, t_val; | |
363 | ||
364 | if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) { | |
c4c66cf1 | 365 | dev_dbg(&msh->dev, "no media status\n"); |
60fdd931 AD |
366 | host->req->error = -ETIME; |
367 | return host->req->error; | |
368 | } | |
369 | ||
c4c66cf1 | 370 | dev_dbg(&msh->dev, "control %08x\n", |
60fdd931 | 371 | readl(host->addr + HOST_CONTROL)); |
c4c66cf1 GKH |
372 | dev_dbg(&msh->dev, "status %08x\n", readl(host->addr + INT_STATUS)); |
373 | dev_dbg(&msh->dev, "hstatus %08x\n", readl(host->addr + STATUS)); | |
60fdd931 AD |
374 | |
375 | host->cmd_flags = 0; | |
376 | host->block_pos = 0; | |
377 | host->io_pos = 0; | |
378 | host->io_word[0] = 0; | |
379 | host->io_word[1] = 0; | |
380 | ||
381 | cmd = host->req->tpc << 16; | |
382 | cmd |= TPC_DATA_SEL; | |
383 | ||
384 | if (host->req->data_dir == READ) | |
385 | cmd |= TPC_DIR; | |
386 | if (host->req->need_card_int) | |
387 | cmd |= TPC_WAIT_INT; | |
60fdd931 AD |
388 | |
389 | data = host->req->data; | |
390 | ||
ead70773 AD |
391 | if (!no_dma) |
392 | host->cmd_flags |= DMA_DATA; | |
60fdd931 AD |
393 | |
394 | if (host->req->long_data) { | |
395 | data_len = host->req->sg.length; | |
396 | } else { | |
397 | data_len = host->req->data_len; | |
ead70773 | 398 | host->cmd_flags &= ~DMA_DATA; |
60fdd931 AD |
399 | } |
400 | ||
401 | if (data_len <= 8) { | |
402 | cmd &= ~(TPC_DATA_SEL | 0xf); | |
403 | host->cmd_flags |= REG_DATA; | |
404 | cmd |= data_len & 0xf; | |
ead70773 | 405 | host->cmd_flags &= ~DMA_DATA; |
60fdd931 AD |
406 | } |
407 | ||
ead70773 | 408 | if (host->cmd_flags & DMA_DATA) { |
60fdd931 AD |
409 | if (1 != pci_map_sg(host->chip->pdev, &host->req->sg, 1, |
410 | host->req->data_dir == READ | |
411 | ? PCI_DMA_FROMDEVICE | |
412 | : PCI_DMA_TODEVICE)) { | |
413 | host->req->error = -ENOMEM; | |
414 | return host->req->error; | |
415 | } | |
416 | data_len = sg_dma_len(&host->req->sg); | |
417 | writel(sg_dma_address(&host->req->sg), | |
418 | host->addr + DMA_ADDRESS); | |
419 | writel(((1 << 16) & BLOCK_COUNT_MASK) | |
420 | | (data_len & BLOCK_SIZE_MASK), | |
421 | host->addr + BLOCK); | |
422 | writel(DMA_CONTROL_ENABLE, host->addr + DMA_CONTROL); | |
423 | } else if (!(host->cmd_flags & REG_DATA)) { | |
424 | writel(((1 << 16) & BLOCK_COUNT_MASK) | |
425 | | (data_len & BLOCK_SIZE_MASK), | |
426 | host->addr + BLOCK); | |
427 | t_val = readl(host->addr + INT_STATUS_ENABLE); | |
428 | t_val |= host->req->data_dir == READ | |
429 | ? INT_STATUS_FIFO_RRDY | |
430 | : INT_STATUS_FIFO_WRDY; | |
431 | ||
432 | writel(t_val, host->addr + INT_STATUS_ENABLE); | |
433 | writel(t_val, host->addr + INT_SIGNAL_ENABLE); | |
434 | } else { | |
435 | cmd &= ~(TPC_DATA_SEL | 0xf); | |
436 | host->cmd_flags |= REG_DATA; | |
437 | cmd |= data_len & 0xf; | |
438 | ||
439 | if (host->req->data_dir == WRITE) { | |
440 | jmb38x_ms_transfer_data(host); | |
441 | writel(host->io_word[0], host->addr + TPC_P0); | |
442 | writel(host->io_word[1], host->addr + TPC_P1); | |
443 | } | |
444 | } | |
445 | ||
446 | mod_timer(&host->timer, jiffies + host->timeout_jiffies); | |
447 | writel(HOST_CONTROL_LED | readl(host->addr + HOST_CONTROL), | |
448 | host->addr + HOST_CONTROL); | |
449 | host->req->error = 0; | |
450 | ||
451 | writel(cmd, host->addr + TPC); | |
c4c66cf1 | 452 | dev_dbg(&msh->dev, "executing TPC %08x, len %x\n", cmd, data_len); |
60fdd931 AD |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last) | |
458 | { | |
459 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
460 | unsigned int t_val = 0; | |
461 | int rc; | |
462 | ||
463 | del_timer(&host->timer); | |
464 | ||
c4c66cf1 | 465 | dev_dbg(&msh->dev, "c control %08x\n", |
60fdd931 | 466 | readl(host->addr + HOST_CONTROL)); |
c4c66cf1 | 467 | dev_dbg(&msh->dev, "c status %08x\n", |
60fdd931 | 468 | readl(host->addr + INT_STATUS)); |
c4c66cf1 | 469 | dev_dbg(&msh->dev, "c hstatus %08x\n", readl(host->addr + STATUS)); |
60fdd931 | 470 | |
ead70773 AD |
471 | host->req->int_reg = readl(host->addr + STATUS) & 0xff; |
472 | ||
473 | writel(0, host->addr + BLOCK); | |
474 | writel(0, host->addr + DMA_CONTROL); | |
60fdd931 | 475 | |
ead70773 | 476 | if (host->cmd_flags & DMA_DATA) { |
60fdd931 AD |
477 | pci_unmap_sg(host->chip->pdev, &host->req->sg, 1, |
478 | host->req->data_dir == READ | |
479 | ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); | |
480 | } else { | |
481 | t_val = readl(host->addr + INT_STATUS_ENABLE); | |
482 | if (host->req->data_dir == READ) | |
483 | t_val &= ~INT_STATUS_FIFO_RRDY; | |
484 | else | |
485 | t_val &= ~INT_STATUS_FIFO_WRDY; | |
486 | ||
487 | writel(t_val, host->addr + INT_STATUS_ENABLE); | |
488 | writel(t_val, host->addr + INT_SIGNAL_ENABLE); | |
489 | } | |
490 | ||
491 | writel((~HOST_CONTROL_LED) & readl(host->addr + HOST_CONTROL), | |
492 | host->addr + HOST_CONTROL); | |
493 | ||
494 | if (!last) { | |
495 | do { | |
496 | rc = memstick_next_req(msh, &host->req); | |
497 | } while (!rc && jmb38x_ms_issue_cmd(msh)); | |
498 | } else { | |
499 | do { | |
500 | rc = memstick_next_req(msh, &host->req); | |
501 | if (!rc) | |
502 | host->req->error = -ETIME; | |
503 | } while (!rc); | |
504 | } | |
505 | } | |
506 | ||
507 | static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id) | |
508 | { | |
509 | struct memstick_host *msh = dev_id; | |
510 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
511 | unsigned int irq_status; | |
512 | ||
513 | spin_lock(&host->lock); | |
514 | irq_status = readl(host->addr + INT_STATUS); | |
515 | dev_dbg(&host->chip->pdev->dev, "irq_status = %08x\n", irq_status); | |
516 | if (irq_status == 0 || irq_status == (~0)) { | |
517 | spin_unlock(&host->lock); | |
518 | return IRQ_NONE; | |
519 | } | |
520 | ||
521 | if (host->req) { | |
522 | if (irq_status & INT_STATUS_ANY_ERR) { | |
523 | if (irq_status & INT_STATUS_CRC_ERR) | |
524 | host->req->error = -EILSEQ; | |
525 | else | |
526 | host->req->error = -ETIME; | |
527 | } else { | |
ead70773 | 528 | if (host->cmd_flags & DMA_DATA) { |
60fdd931 AD |
529 | if (irq_status & INT_STATUS_EOTRAN) |
530 | host->cmd_flags |= FIFO_READY; | |
531 | } else { | |
532 | if (irq_status & (INT_STATUS_FIFO_RRDY | |
533 | | INT_STATUS_FIFO_WRDY)) | |
534 | jmb38x_ms_transfer_data(host); | |
535 | ||
536 | if (irq_status & INT_STATUS_EOTRAN) { | |
537 | jmb38x_ms_transfer_data(host); | |
538 | host->cmd_flags |= FIFO_READY; | |
539 | } | |
540 | } | |
541 | ||
542 | if (irq_status & INT_STATUS_EOTPC) { | |
543 | host->cmd_flags |= CMD_READY; | |
544 | if (host->cmd_flags & REG_DATA) { | |
545 | if (host->req->data_dir == READ) { | |
546 | host->io_word[0] | |
547 | = readl(host->addr | |
548 | + TPC_P0); | |
549 | host->io_word[1] | |
550 | = readl(host->addr | |
551 | + TPC_P1); | |
552 | host->io_pos = 8; | |
553 | ||
554 | jmb38x_ms_transfer_data(host); | |
555 | } | |
556 | host->cmd_flags |= FIFO_READY; | |
557 | } | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | if (irq_status & (INT_STATUS_MEDIA_IN | INT_STATUS_MEDIA_OUT)) { | |
563 | dev_dbg(&host->chip->pdev->dev, "media changed\n"); | |
564 | memstick_detect_change(msh); | |
565 | } | |
566 | ||
567 | writel(irq_status, host->addr + INT_STATUS); | |
568 | ||
569 | if (host->req | |
570 | && (((host->cmd_flags & CMD_READY) | |
571 | && (host->cmd_flags & FIFO_READY)) | |
572 | || host->req->error)) | |
573 | jmb38x_ms_complete_cmd(msh, 0); | |
574 | ||
575 | spin_unlock(&host->lock); | |
576 | return IRQ_HANDLED; | |
577 | } | |
578 | ||
579 | static void jmb38x_ms_abort(unsigned long data) | |
580 | { | |
581 | struct memstick_host *msh = (struct memstick_host *)data; | |
582 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
583 | unsigned long flags; | |
584 | ||
585 | dev_dbg(&host->chip->pdev->dev, "abort\n"); | |
586 | spin_lock_irqsave(&host->lock, flags); | |
587 | if (host->req) { | |
588 | host->req->error = -ETIME; | |
589 | jmb38x_ms_complete_cmd(msh, 0); | |
590 | } | |
591 | spin_unlock_irqrestore(&host->lock, flags); | |
592 | } | |
593 | ||
f1d82698 | 594 | static void jmb38x_ms_req_tasklet(unsigned long data) |
60fdd931 | 595 | { |
f1d82698 | 596 | struct memstick_host *msh = (struct memstick_host *)data; |
60fdd931 AD |
597 | struct jmb38x_ms_host *host = memstick_priv(msh); |
598 | unsigned long flags; | |
599 | int rc; | |
600 | ||
601 | spin_lock_irqsave(&host->lock, flags); | |
f1d82698 AD |
602 | if (!host->req) { |
603 | do { | |
604 | rc = memstick_next_req(msh, &host->req); | |
605 | dev_dbg(&host->chip->pdev->dev, "tasklet req %d\n", rc); | |
606 | } while (!rc && jmb38x_ms_issue_cmd(msh)); | |
60fdd931 | 607 | } |
60fdd931 AD |
608 | spin_unlock_irqrestore(&host->lock, flags); |
609 | } | |
610 | ||
f1d82698 AD |
611 | static void jmb38x_ms_dummy_submit(struct memstick_host *msh) |
612 | { | |
613 | return; | |
614 | } | |
615 | ||
616 | static void jmb38x_ms_submit_req(struct memstick_host *msh) | |
617 | { | |
618 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
619 | ||
620 | tasklet_schedule(&host->notify); | |
621 | } | |
622 | ||
b7789998 | 623 | static int jmb38x_ms_reset(struct jmb38x_ms_host *host) |
60fdd931 | 624 | { |
b7789998 | 625 | int cnt; |
60fdd931 | 626 | |
b7789998 AD |
627 | writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN |
628 | | readl(host->addr + HOST_CONTROL), | |
629 | host->addr + HOST_CONTROL); | |
630 | mmiowb(); | |
631 | ||
632 | for (cnt = 0; cnt < 20; ++cnt) { | |
633 | if (!(HOST_CONTROL_RESET_REQ | |
634 | & readl(host->addr + HOST_CONTROL))) | |
635 | goto reset_next; | |
60fdd931 | 636 | |
cf821e8f | 637 | ndelay(20); |
60fdd931 | 638 | } |
b7789998 AD |
639 | dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n"); |
640 | return -EIO; | |
60fdd931 | 641 | |
b7789998 AD |
642 | reset_next: |
643 | writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN | |
644 | | readl(host->addr + HOST_CONTROL), | |
645 | host->addr + HOST_CONTROL); | |
646 | mmiowb(); | |
647 | ||
648 | for (cnt = 0; cnt < 20; ++cnt) { | |
649 | if (!(HOST_CONTROL_RESET | |
650 | & readl(host->addr + HOST_CONTROL))) | |
651 | goto reset_ok; | |
652 | ||
653 | ndelay(20); | |
654 | } | |
655 | dev_dbg(&host->chip->pdev->dev, "reset timeout\n"); | |
656 | return -EIO; | |
657 | ||
658 | reset_ok: | |
cf821e8f | 659 | mmiowb(); |
60fdd931 | 660 | writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE); |
cf821e8f | 661 | writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE); |
b7789998 | 662 | return 0; |
60fdd931 AD |
663 | } |
664 | ||
b7789998 AD |
665 | static int jmb38x_ms_set_param(struct memstick_host *msh, |
666 | enum memstick_param param, | |
667 | int value) | |
60fdd931 AD |
668 | { |
669 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
cf821e8f AD |
670 | unsigned int host_ctl = readl(host->addr + HOST_CONTROL); |
671 | unsigned int clock_ctl = CLOCK_CONTROL_40MHZ, clock_delay = 0; | |
b7789998 | 672 | int rc = 0; |
60fdd931 AD |
673 | |
674 | switch (param) { | |
675 | case MEMSTICK_POWER: | |
676 | if (value == MEMSTICK_POWER_ON) { | |
b7789998 AD |
677 | rc = jmb38x_ms_reset(host); |
678 | if (rc) | |
679 | return rc; | |
680 | ||
681 | host_ctl = 7; | |
682 | host_ctl |= HOST_CONTROL_POWER_EN | |
683 | | HOST_CONTROL_CLOCK_EN; | |
684 | writel(host_ctl, host->addr + HOST_CONTROL); | |
60fdd931 AD |
685 | |
686 | writel(host->id ? PAD_PU_PD_ON_MS_SOCK1 | |
cf821e8f | 687 | : PAD_PU_PD_ON_MS_SOCK0, |
60fdd931 AD |
688 | host->addr + PAD_PU_PD); |
689 | ||
690 | writel(PAD_OUTPUT_ENABLE_MS, | |
691 | host->addr + PAD_OUTPUT_ENABLE); | |
692 | ||
b7789998 | 693 | msleep(10); |
60fdd931 AD |
694 | dev_dbg(&host->chip->pdev->dev, "power on\n"); |
695 | } else if (value == MEMSTICK_POWER_OFF) { | |
cf821e8f AD |
696 | host_ctl &= ~(HOST_CONTROL_POWER_EN |
697 | | HOST_CONTROL_CLOCK_EN); | |
698 | writel(host_ctl, host->addr + HOST_CONTROL); | |
60fdd931 AD |
699 | writel(0, host->addr + PAD_OUTPUT_ENABLE); |
700 | writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD); | |
701 | dev_dbg(&host->chip->pdev->dev, "power off\n"); | |
b7789998 AD |
702 | } else |
703 | return -EINVAL; | |
60fdd931 AD |
704 | break; |
705 | case MEMSTICK_INTERFACE: | |
60fdd931 | 706 | host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT); |
60fdd931 AD |
707 | |
708 | if (value == MEMSTICK_SERIAL) { | |
709 | host_ctl &= ~HOST_CONTROL_FAST_CLK; | |
710 | host_ctl |= HOST_CONTROL_IF_SERIAL | |
711 | << HOST_CONTROL_IF_SHIFT; | |
712 | host_ctl |= HOST_CONTROL_REI; | |
cf821e8f AD |
713 | clock_ctl = CLOCK_CONTROL_40MHZ; |
714 | clock_delay = 0; | |
60fdd931 AD |
715 | } else if (value == MEMSTICK_PAR4) { |
716 | host_ctl |= HOST_CONTROL_FAST_CLK; | |
717 | host_ctl |= HOST_CONTROL_IF_PAR4 | |
718 | << HOST_CONTROL_IF_SHIFT; | |
719 | host_ctl &= ~HOST_CONTROL_REI; | |
cf821e8f AD |
720 | clock_ctl = CLOCK_CONTROL_40MHZ; |
721 | clock_delay = 4; | |
60fdd931 AD |
722 | } else if (value == MEMSTICK_PAR8) { |
723 | host_ctl |= HOST_CONTROL_FAST_CLK; | |
724 | host_ctl |= HOST_CONTROL_IF_PAR8 | |
725 | << HOST_CONTROL_IF_SHIFT; | |
726 | host_ctl &= ~HOST_CONTROL_REI; | |
cf821e8f AD |
727 | clock_ctl = CLOCK_CONTROL_60MHZ; |
728 | clock_delay = 0; | |
b7789998 AD |
729 | } else |
730 | return -EINVAL; | |
60fdd931 | 731 | writel(host_ctl, host->addr + HOST_CONTROL); |
cf821e8f AD |
732 | writel(clock_ctl, host->addr + CLOCK_CONTROL); |
733 | writel(clock_delay, host->addr + CLOCK_DELAY); | |
60fdd931 AD |
734 | break; |
735 | }; | |
b7789998 | 736 | return 0; |
60fdd931 AD |
737 | } |
738 | ||
739 | #ifdef CONFIG_PM | |
740 | ||
741 | static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state) | |
742 | { | |
743 | struct jmb38x_ms *jm = pci_get_drvdata(dev); | |
744 | int cnt; | |
745 | ||
746 | for (cnt = 0; cnt < jm->host_cnt; ++cnt) { | |
747 | if (!jm->hosts[cnt]) | |
748 | break; | |
749 | memstick_suspend_host(jm->hosts[cnt]); | |
750 | } | |
751 | ||
752 | pci_save_state(dev); | |
753 | pci_enable_wake(dev, pci_choose_state(dev, state), 0); | |
754 | pci_disable_device(dev); | |
755 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | static int jmb38x_ms_resume(struct pci_dev *dev) | |
760 | { | |
761 | struct jmb38x_ms *jm = pci_get_drvdata(dev); | |
762 | int rc; | |
763 | ||
764 | pci_set_power_state(dev, PCI_D0); | |
765 | pci_restore_state(dev); | |
766 | rc = pci_enable_device(dev); | |
767 | if (rc) | |
768 | return rc; | |
769 | pci_set_master(dev); | |
770 | ||
771 | pci_read_config_dword(dev, 0xac, &rc); | |
772 | pci_write_config_dword(dev, 0xac, rc | 0x00470000); | |
773 | ||
774 | for (rc = 0; rc < jm->host_cnt; ++rc) { | |
775 | if (!jm->hosts[rc]) | |
776 | break; | |
777 | memstick_resume_host(jm->hosts[rc]); | |
778 | memstick_detect_change(jm->hosts[rc]); | |
779 | } | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | #else | |
785 | ||
786 | #define jmb38x_ms_suspend NULL | |
787 | #define jmb38x_ms_resume NULL | |
788 | ||
789 | #endif /* CONFIG_PM */ | |
790 | ||
791 | static int jmb38x_ms_count_slots(struct pci_dev *pdev) | |
792 | { | |
793 | int cnt, rc = 0; | |
794 | ||
795 | for (cnt = 0; cnt < PCI_ROM_RESOURCE; ++cnt) { | |
796 | if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt))) | |
797 | break; | |
798 | ||
799 | if (256 != pci_resource_len(pdev, cnt)) | |
800 | break; | |
801 | ||
802 | ++rc; | |
803 | } | |
804 | return rc; | |
805 | } | |
806 | ||
807 | static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt) | |
808 | { | |
809 | struct memstick_host *msh; | |
810 | struct jmb38x_ms_host *host; | |
811 | ||
812 | msh = memstick_alloc_host(sizeof(struct jmb38x_ms_host), | |
813 | &jm->pdev->dev); | |
814 | if (!msh) | |
815 | return NULL; | |
816 | ||
817 | host = memstick_priv(msh); | |
818 | host->chip = jm; | |
819 | host->addr = ioremap(pci_resource_start(jm->pdev, cnt), | |
820 | pci_resource_len(jm->pdev, cnt)); | |
821 | if (!host->addr) | |
822 | goto err_out_free; | |
823 | ||
824 | spin_lock_init(&host->lock); | |
825 | host->id = cnt; | |
b98cb4b7 | 826 | snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d", |
60fdd931 AD |
827 | host->id); |
828 | host->irq = jm->pdev->irq; | |
ead70773 | 829 | host->timeout_jiffies = msecs_to_jiffies(1000); |
f1d82698 AD |
830 | |
831 | tasklet_init(&host->notify, jmb38x_ms_req_tasklet, (unsigned long)msh); | |
832 | msh->request = jmb38x_ms_submit_req; | |
60fdd931 | 833 | msh->set_param = jmb38x_ms_set_param; |
ead70773 | 834 | |
60fdd931 AD |
835 | msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8; |
836 | ||
837 | setup_timer(&host->timer, jmb38x_ms_abort, (unsigned long)msh); | |
838 | ||
839 | if (!request_irq(host->irq, jmb38x_ms_isr, IRQF_SHARED, host->host_id, | |
840 | msh)) | |
841 | return msh; | |
842 | ||
843 | iounmap(host->addr); | |
844 | err_out_free: | |
845 | kfree(msh); | |
846 | return NULL; | |
847 | } | |
848 | ||
849 | static void jmb38x_ms_free_host(struct memstick_host *msh) | |
850 | { | |
851 | struct jmb38x_ms_host *host = memstick_priv(msh); | |
852 | ||
853 | free_irq(host->irq, msh); | |
854 | iounmap(host->addr); | |
855 | memstick_free_host(msh); | |
856 | } | |
857 | ||
858 | static int jmb38x_ms_probe(struct pci_dev *pdev, | |
859 | const struct pci_device_id *dev_id) | |
860 | { | |
861 | struct jmb38x_ms *jm; | |
862 | int pci_dev_busy = 0; | |
863 | int rc, cnt; | |
864 | ||
865 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
866 | if (rc) | |
867 | return rc; | |
868 | ||
869 | rc = pci_enable_device(pdev); | |
870 | if (rc) | |
871 | return rc; | |
872 | ||
873 | pci_set_master(pdev); | |
874 | ||
875 | rc = pci_request_regions(pdev, DRIVER_NAME); | |
876 | if (rc) { | |
877 | pci_dev_busy = 1; | |
878 | goto err_out; | |
879 | } | |
880 | ||
881 | pci_read_config_dword(pdev, 0xac, &rc); | |
882 | pci_write_config_dword(pdev, 0xac, rc | 0x00470000); | |
883 | ||
884 | cnt = jmb38x_ms_count_slots(pdev); | |
885 | if (!cnt) { | |
886 | rc = -ENODEV; | |
887 | pci_dev_busy = 1; | |
888 | goto err_out; | |
889 | } | |
890 | ||
891 | jm = kzalloc(sizeof(struct jmb38x_ms) | |
892 | + cnt * sizeof(struct memstick_host *), GFP_KERNEL); | |
893 | if (!jm) { | |
894 | rc = -ENOMEM; | |
895 | goto err_out_int; | |
896 | } | |
897 | ||
898 | jm->pdev = pdev; | |
899 | jm->host_cnt = cnt; | |
900 | pci_set_drvdata(pdev, jm); | |
901 | ||
902 | for (cnt = 0; cnt < jm->host_cnt; ++cnt) { | |
903 | jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt); | |
904 | if (!jm->hosts[cnt]) | |
905 | break; | |
906 | ||
907 | rc = memstick_add_host(jm->hosts[cnt]); | |
908 | ||
909 | if (rc) { | |
910 | jmb38x_ms_free_host(jm->hosts[cnt]); | |
911 | jm->hosts[cnt] = NULL; | |
912 | break; | |
913 | } | |
914 | } | |
915 | ||
916 | if (cnt) | |
917 | return 0; | |
918 | ||
919 | rc = -ENODEV; | |
920 | ||
921 | pci_set_drvdata(pdev, NULL); | |
922 | kfree(jm); | |
923 | err_out_int: | |
924 | pci_release_regions(pdev); | |
925 | err_out: | |
926 | if (!pci_dev_busy) | |
927 | pci_disable_device(pdev); | |
928 | return rc; | |
929 | } | |
930 | ||
931 | static void jmb38x_ms_remove(struct pci_dev *dev) | |
932 | { | |
933 | struct jmb38x_ms *jm = pci_get_drvdata(dev); | |
934 | struct jmb38x_ms_host *host; | |
935 | int cnt; | |
936 | unsigned long flags; | |
937 | ||
938 | for (cnt = 0; cnt < jm->host_cnt; ++cnt) { | |
939 | if (!jm->hosts[cnt]) | |
940 | break; | |
941 | ||
942 | host = memstick_priv(jm->hosts[cnt]); | |
943 | ||
f1d82698 AD |
944 | jm->hosts[cnt]->request = jmb38x_ms_dummy_submit; |
945 | tasklet_kill(&host->notify); | |
60fdd931 AD |
946 | writel(0, host->addr + INT_SIGNAL_ENABLE); |
947 | writel(0, host->addr + INT_STATUS_ENABLE); | |
948 | mmiowb(); | |
949 | dev_dbg(&jm->pdev->dev, "interrupts off\n"); | |
950 | spin_lock_irqsave(&host->lock, flags); | |
951 | if (host->req) { | |
952 | host->req->error = -ETIME; | |
953 | jmb38x_ms_complete_cmd(jm->hosts[cnt], 1); | |
954 | } | |
955 | spin_unlock_irqrestore(&host->lock, flags); | |
956 | ||
957 | memstick_remove_host(jm->hosts[cnt]); | |
958 | dev_dbg(&jm->pdev->dev, "host removed\n"); | |
959 | ||
960 | jmb38x_ms_free_host(jm->hosts[cnt]); | |
961 | } | |
962 | ||
963 | pci_set_drvdata(dev, NULL); | |
964 | pci_release_regions(dev); | |
965 | pci_disable_device(dev); | |
966 | kfree(jm); | |
967 | } | |
968 | ||
969 | static struct pci_device_id jmb38x_ms_id_tbl [] = { | |
970 | { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_MS, PCI_ANY_ID, | |
971 | PCI_ANY_ID, 0, 0, 0 }, | |
972 | { } | |
973 | }; | |
974 | ||
975 | static struct pci_driver jmb38x_ms_driver = { | |
976 | .name = DRIVER_NAME, | |
977 | .id_table = jmb38x_ms_id_tbl, | |
978 | .probe = jmb38x_ms_probe, | |
979 | .remove = jmb38x_ms_remove, | |
980 | .suspend = jmb38x_ms_suspend, | |
981 | .resume = jmb38x_ms_resume | |
982 | }; | |
983 | ||
984 | static int __init jmb38x_ms_init(void) | |
985 | { | |
986 | return pci_register_driver(&jmb38x_ms_driver); | |
987 | } | |
988 | ||
989 | static void __exit jmb38x_ms_exit(void) | |
990 | { | |
991 | pci_unregister_driver(&jmb38x_ms_driver); | |
992 | } | |
993 | ||
994 | MODULE_AUTHOR("Alex Dubov"); | |
995 | MODULE_DESCRIPTION("JMicron jmb38x MemoryStick driver"); | |
996 | MODULE_LICENSE("GPL"); | |
997 | MODULE_DEVICE_TABLE(pci, jmb38x_ms_id_tbl); | |
998 | ||
999 | module_init(jmb38x_ms_init); | |
1000 | module_exit(jmb38x_ms_exit); |