1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * TI FlashMedia driver |
4 | * |
5 | * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com> |
6 | * |
7 | * Special thanks to Carlos Corbacho for providing various MemoryStick cards |
8 | * that made this driver possible. |
9 | */ |
10 | |
11 | #include <linux/tifm.h> |
12 | #include <linux/memstick.h> |
13 | #include <linux/highmem.h> |
14 | #include <linux/scatterlist.h> |
15 | #include <linux/log2.h> |
16 | #include <linux/module.h> |
17 | #include <asm/io.h> |
18 | |
19 | #define DRIVER_NAME "tifm_ms" |
20 | |
21 | static bool no_dma; |
22 | module_param(no_dma, bool, 0644); |
23 | |
24 | /* |
25 | * Some control bits of TIFM appear to conform to Sony's reference design, |
26 | * so I'm just assuming they all are. |
27 | */ |
28 | |
29 | #define TIFM_MS_STAT_DRQ 0x04000 |
30 | #define TIFM_MS_STAT_MSINT 0x02000 |
31 | #define TIFM_MS_STAT_RDY 0x01000 |
32 | #define TIFM_MS_STAT_CRC 0x00200 |
33 | #define TIFM_MS_STAT_TOE 0x00100 |
34 | #define TIFM_MS_STAT_EMP 0x00020 |
35 | #define TIFM_MS_STAT_FUL 0x00010 |
36 | #define TIFM_MS_STAT_CED 0x00008 |
37 | #define TIFM_MS_STAT_ERR 0x00004 |
38 | #define TIFM_MS_STAT_BRQ 0x00002 |
39 | #define TIFM_MS_STAT_CNK 0x00001 |
40 | |
41 | #define TIFM_MS_SYS_DMA 0x10000 |
42 | #define TIFM_MS_SYS_RESET 0x08000 |
43 | #define TIFM_MS_SYS_SRAC 0x04000 |
44 | #define TIFM_MS_SYS_INTEN 0x02000 |
45 | #define TIFM_MS_SYS_NOCRC 0x01000 |
46 | #define TIFM_MS_SYS_INTCLR 0x00800 |
47 | #define TIFM_MS_SYS_MSIEN 0x00400 |
48 | #define TIFM_MS_SYS_FCLR 0x00200 |
49 | #define TIFM_MS_SYS_FDIR 0x00100 |
50 | #define TIFM_MS_SYS_DAM 0x00080 |
51 | #define TIFM_MS_SYS_DRM 0x00040 |
52 | #define TIFM_MS_SYS_DRQSL 0x00020 |
53 | #define TIFM_MS_SYS_REI 0x00010 |
54 | #define TIFM_MS_SYS_REO 0x00008 |
55 | #define TIFM_MS_SYS_BSY_MASK 0x00007 |
56 | |
57 | #define TIFM_MS_SYS_FIFO (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \ |
58 | | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK) |
59 | |
60 | /* Hardware flags */ |
61 | enum { |
62 | CMD_READY = 0x01, |
63 | FIFO_READY = 0x02, |
64 | CARD_INT = 0x04 |
65 | }; |
66 | |
67 | struct tifm_ms { |
68 | struct tifm_dev *dev; |
69 | struct timer_list timer; |
70 | struct memstick_request *req; |
71 | struct tasklet_struct notify; |
72 | unsigned int mode_mask; |
73 | unsigned int block_pos; |
74 | unsigned long timeout_jiffies; |
75 | unsigned char eject:1, |
76 | use_dma:1; |
77 | unsigned char cmd_flags; |
78 | unsigned char io_pos; |
79 | unsigned int io_word; |
80 | }; |
81 | |
82 | static unsigned int tifm_ms_read_data(struct tifm_ms *host, |
83 | unsigned char *buf, unsigned int length) |
84 | { |
85 | struct tifm_dev *sock = host->dev; |
86 | unsigned int off = 0; |
87 | |
88 | while (host->io_pos && length) { |
89 | buf[off++] = host->io_word & 0xff; |
90 | host->io_word >>= 8; |
91 | length--; |
92 | host->io_pos--; |
93 | } |
94 | |
95 | if (!length) |
96 | return off; |
97 | |
98 | while (!(TIFM_MS_STAT_EMP & readl(addr: sock->addr + SOCK_MS_STATUS))) { |
99 | if (length < 4) |
100 | break; |
101 | *(unsigned int *)(buf + off) = __raw_readl(addr: sock->addr |
102 | + SOCK_MS_DATA); |
103 | length -= 4; |
104 | off += 4; |
105 | } |
106 | |
107 | if (length |
108 | && !(TIFM_MS_STAT_EMP & readl(addr: sock->addr + SOCK_MS_STATUS))) { |
109 | host->io_word = readl(addr: sock->addr + SOCK_MS_DATA); |
110 | for (host->io_pos = 4; host->io_pos; --host->io_pos) { |
111 | buf[off++] = host->io_word & 0xff; |
112 | host->io_word >>= 8; |
113 | length--; |
114 | if (!length) |
115 | break; |
116 | } |
117 | } |
118 | |
119 | return off; |
120 | } |
121 | |
122 | static unsigned int tifm_ms_write_data(struct tifm_ms *host, |
123 | unsigned char *buf, unsigned int length) |
124 | { |
125 | struct tifm_dev *sock = host->dev; |
126 | unsigned int off = 0; |
127 | |
128 | if (host->io_pos) { |
129 | while (host->io_pos < 4 && length) { |
130 | host->io_word |= buf[off++] << (host->io_pos * 8); |
131 | host->io_pos++; |
132 | length--; |
133 | } |
134 | } |
135 | |
136 | if (host->io_pos == 4 |
137 | && !(TIFM_MS_STAT_FUL & readl(addr: sock->addr + SOCK_MS_STATUS))) { |
138 | writel(TIFM_MS_SYS_FDIR | readl(addr: sock->addr + SOCK_MS_SYSTEM), |
139 | addr: sock->addr + SOCK_MS_SYSTEM); |
140 | writel(val: host->io_word, addr: sock->addr + SOCK_MS_DATA); |
141 | host->io_pos = 0; |
142 | host->io_word = 0; |
143 | } else if (host->io_pos) { |
144 | return off; |
145 | } |
146 | |
147 | if (!length) |
148 | return off; |
149 | |
150 | while (!(TIFM_MS_STAT_FUL & readl(addr: sock->addr + SOCK_MS_STATUS))) { |
151 | if (length < 4) |
152 | break; |
153 | writel(TIFM_MS_SYS_FDIR | readl(addr: sock->addr + SOCK_MS_SYSTEM), |
154 | addr: sock->addr + SOCK_MS_SYSTEM); |
155 | __raw_writel(val: *(unsigned int *)(buf + off), |
156 | addr: sock->addr + SOCK_MS_DATA); |
157 | length -= 4; |
158 | off += 4; |
159 | } |
160 | |
161 | switch (length) { |
162 | case 3: |
163 | host->io_word |= buf[off + 2] << 16; |
164 | host->io_pos++; |
165 | fallthrough; |
166 | case 2: |
167 | host->io_word |= buf[off + 1] << 8; |
168 | host->io_pos++; |
169 | fallthrough; |
170 | case 1: |
171 | host->io_word |= buf[off]; |
172 | host->io_pos++; |
173 | } |
174 | |
175 | off += host->io_pos; |
176 | |
177 | return off; |
178 | } |
179 | |
180 | static unsigned int tifm_ms_transfer_data(struct tifm_ms *host) |
181 | { |
182 | struct tifm_dev *sock = host->dev; |
183 | unsigned int length; |
184 | unsigned int off; |
185 | unsigned int t_size, p_cnt; |
186 | unsigned char *buf; |
187 | struct page *pg; |
188 | unsigned long flags = 0; |
189 | |
190 | if (host->req->long_data) { |
191 | length = host->req->sg.length - host->block_pos; |
192 | off = host->req->sg.offset + host->block_pos; |
193 | } else { |
194 | length = host->req->data_len - host->block_pos; |
195 | off = 0; |
196 | } |
197 | dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n" , length, |
198 | host->block_pos); |
199 | |
200 | while (length) { |
201 | unsigned int p_off; |
202 | |
203 | if (host->req->long_data) { |
204 | pg = nth_page(sg_page(&host->req->sg), |
205 | off >> PAGE_SHIFT); |
206 | p_off = offset_in_page(off); |
207 | p_cnt = PAGE_SIZE - p_off; |
208 | p_cnt = min(p_cnt, length); |
209 | |
210 | local_irq_save(flags); |
211 | buf = kmap_atomic(page: pg) + p_off; |
212 | } else { |
213 | buf = host->req->data + host->block_pos; |
214 | p_cnt = host->req->data_len - host->block_pos; |
215 | } |
216 | |
217 | t_size = host->req->data_dir == WRITE |
218 | ? tifm_ms_write_data(host, buf, length: p_cnt) |
219 | : tifm_ms_read_data(host, buf, length: p_cnt); |
220 | |
221 | if (host->req->long_data) { |
222 | kunmap_atomic(buf - p_off); |
223 | local_irq_restore(flags); |
224 | } |
225 | |
226 | if (!t_size) |
227 | break; |
228 | host->block_pos += t_size; |
229 | length -= t_size; |
230 | off += t_size; |
231 | } |
232 | |
233 | dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n" , length); |
234 | if (!length && (host->req->data_dir == WRITE)) { |
235 | if (host->io_pos) { |
236 | writel(TIFM_MS_SYS_FDIR |
237 | | readl(addr: sock->addr + SOCK_MS_SYSTEM), |
238 | addr: sock->addr + SOCK_MS_SYSTEM); |
239 | writel(val: host->io_word, addr: sock->addr + SOCK_MS_DATA); |
240 | } |
241 | writel(TIFM_MS_SYS_FDIR |
242 | | readl(addr: sock->addr + SOCK_MS_SYSTEM), |
243 | addr: sock->addr + SOCK_MS_SYSTEM); |
244 | writel(val: 0, addr: sock->addr + SOCK_MS_DATA); |
245 | } else { |
246 | readl(addr: sock->addr + SOCK_MS_DATA); |
247 | } |
248 | |
249 | return length; |
250 | } |
251 | |
252 | static int tifm_ms_issue_cmd(struct tifm_ms *host) |
253 | { |
254 | struct tifm_dev *sock = host->dev; |
255 | unsigned int data_len, cmd, sys_param; |
256 | |
257 | host->cmd_flags = 0; |
258 | host->block_pos = 0; |
259 | host->io_pos = 0; |
260 | host->io_word = 0; |
261 | host->cmd_flags = 0; |
262 | |
263 | host->use_dma = !no_dma; |
264 | |
265 | if (host->req->long_data) { |
266 | data_len = host->req->sg.length; |
267 | if (!is_power_of_2(n: data_len)) |
268 | host->use_dma = 0; |
269 | } else { |
270 | data_len = host->req->data_len; |
271 | host->use_dma = 0; |
272 | } |
273 | |
274 | writel(TIFM_FIFO_INT_SETALL, |
275 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
276 | writel(TIFM_FIFO_ENABLE, |
277 | addr: sock->addr + SOCK_FIFO_CONTROL); |
278 | |
279 | if (host->use_dma) { |
280 | if (1 != tifm_map_sg(sock, sg: &host->req->sg, nents: 1, |
281 | direction: host->req->data_dir == READ |
282 | ? DMA_FROM_DEVICE |
283 | : DMA_TO_DEVICE)) { |
284 | host->req->error = -ENOMEM; |
285 | return host->req->error; |
286 | } |
287 | data_len = sg_dma_len(&host->req->sg); |
288 | |
289 | writel(ilog2(data_len) - 2, |
290 | addr: sock->addr + SOCK_FIFO_PAGE_SIZE); |
291 | writel(TIFM_FIFO_INTMASK, |
292 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); |
293 | sys_param = TIFM_DMA_EN | (1 << 8); |
294 | if (host->req->data_dir == WRITE) |
295 | sys_param |= TIFM_DMA_TX; |
296 | |
297 | writel(TIFM_FIFO_INTMASK, |
298 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); |
299 | |
300 | writel(sg_dma_address(&host->req->sg), |
301 | addr: sock->addr + SOCK_DMA_ADDRESS); |
302 | writel(val: sys_param, addr: sock->addr + SOCK_DMA_CONTROL); |
303 | } else { |
304 | writel(val: host->mode_mask | TIFM_MS_SYS_FIFO, |
305 | addr: sock->addr + SOCK_MS_SYSTEM); |
306 | |
307 | writel(TIFM_FIFO_MORE, |
308 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); |
309 | } |
310 | |
311 | mod_timer(timer: &host->timer, expires: jiffies + host->timeout_jiffies); |
312 | writel(TIFM_CTRL_LED | readl(addr: sock->addr + SOCK_CONTROL), |
313 | addr: sock->addr + SOCK_CONTROL); |
314 | host->req->error = 0; |
315 | |
316 | sys_param = readl(addr: sock->addr + SOCK_MS_SYSTEM); |
317 | sys_param |= TIFM_MS_SYS_INTCLR; |
318 | |
319 | if (host->use_dma) |
320 | sys_param |= TIFM_MS_SYS_DMA; |
321 | else |
322 | sys_param &= ~TIFM_MS_SYS_DMA; |
323 | |
324 | writel(val: sys_param, addr: sock->addr + SOCK_MS_SYSTEM); |
325 | |
326 | cmd = (host->req->tpc & 0xf) << 12; |
327 | cmd |= data_len; |
328 | writel(val: cmd, addr: sock->addr + SOCK_MS_COMMAND); |
329 | |
330 | dev_dbg(&sock->dev, "executing TPC %x, %x\n" , cmd, sys_param); |
331 | return 0; |
332 | } |
333 | |
334 | static void tifm_ms_complete_cmd(struct tifm_ms *host) |
335 | { |
336 | struct tifm_dev *sock = host->dev; |
337 | struct memstick_host *msh = tifm_get_drvdata(dev: sock); |
338 | int rc; |
339 | |
340 | del_timer(timer: &host->timer); |
341 | |
342 | host->req->int_reg = readl(addr: sock->addr + SOCK_MS_STATUS) & 0xff; |
343 | host->req->int_reg = (host->req->int_reg & 1) |
344 | | ((host->req->int_reg << 4) & 0xe0); |
345 | |
346 | writel(TIFM_FIFO_INT_SETALL, |
347 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
348 | writel(TIFM_DMA_RESET, addr: sock->addr + SOCK_DMA_CONTROL); |
349 | |
350 | if (host->use_dma) { |
351 | tifm_unmap_sg(sock, sg: &host->req->sg, nents: 1, |
352 | direction: host->req->data_dir == READ |
353 | ? DMA_FROM_DEVICE |
354 | : DMA_TO_DEVICE); |
355 | } |
356 | |
357 | writel(val: (~TIFM_CTRL_LED) & readl(addr: sock->addr + SOCK_CONTROL), |
358 | addr: sock->addr + SOCK_CONTROL); |
359 | |
360 | dev_dbg(&sock->dev, "TPC complete\n" ); |
361 | do { |
362 | rc = memstick_next_req(host: msh, mrq: &host->req); |
363 | } while (!rc && tifm_ms_issue_cmd(host)); |
364 | } |
365 | |
366 | static int tifm_ms_check_status(struct tifm_ms *host) |
367 | { |
368 | if (!host->req->error) { |
369 | if (!(host->cmd_flags & CMD_READY)) |
370 | return 1; |
371 | if (!(host->cmd_flags & FIFO_READY)) |
372 | return 1; |
373 | if (host->req->need_card_int |
374 | && !(host->cmd_flags & CARD_INT)) |
375 | return 1; |
376 | } |
377 | return 0; |
378 | } |
379 | |
380 | /* Called from interrupt handler */ |
381 | static void tifm_ms_data_event(struct tifm_dev *sock) |
382 | { |
383 | struct tifm_ms *host; |
384 | unsigned int fifo_status = 0, host_status = 0; |
385 | int rc = 1; |
386 | |
387 | spin_lock(lock: &sock->lock); |
388 | host = memstick_priv(host: (struct memstick_host *)tifm_get_drvdata(dev: sock)); |
389 | fifo_status = readl(addr: sock->addr + SOCK_DMA_FIFO_STATUS); |
390 | host_status = readl(addr: sock->addr + SOCK_MS_STATUS); |
391 | dev_dbg(&sock->dev, |
392 | "data event: fifo_status %x, host_status %x, flags %x\n" , |
393 | fifo_status, host_status, host->cmd_flags); |
394 | |
395 | if (host->req) { |
396 | if (host->use_dma && (fifo_status & 1)) { |
397 | host->cmd_flags |= FIFO_READY; |
398 | rc = tifm_ms_check_status(host); |
399 | } |
400 | if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) { |
401 | if (!tifm_ms_transfer_data(host)) { |
402 | host->cmd_flags |= FIFO_READY; |
403 | rc = tifm_ms_check_status(host); |
404 | } |
405 | } |
406 | } |
407 | |
408 | writel(val: fifo_status, addr: sock->addr + SOCK_DMA_FIFO_STATUS); |
409 | if (!rc) |
410 | tifm_ms_complete_cmd(host); |
411 | |
412 | spin_unlock(lock: &sock->lock); |
413 | } |
414 | |
415 | |
416 | /* Called from interrupt handler */ |
417 | static void tifm_ms_card_event(struct tifm_dev *sock) |
418 | { |
419 | struct tifm_ms *host; |
420 | unsigned int host_status = 0; |
421 | int rc = 1; |
422 | |
423 | spin_lock(lock: &sock->lock); |
424 | host = memstick_priv(host: (struct memstick_host *)tifm_get_drvdata(dev: sock)); |
425 | host_status = readl(addr: sock->addr + SOCK_MS_STATUS); |
426 | dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n" , |
427 | host_status, host->cmd_flags); |
428 | |
429 | if (host->req) { |
430 | if (host_status & TIFM_MS_STAT_TOE) |
431 | host->req->error = -ETIME; |
432 | else if (host_status & TIFM_MS_STAT_CRC) |
433 | host->req->error = -EILSEQ; |
434 | |
435 | if (host_status & TIFM_MS_STAT_RDY) |
436 | host->cmd_flags |= CMD_READY; |
437 | |
438 | if (host_status & TIFM_MS_STAT_MSINT) |
439 | host->cmd_flags |= CARD_INT; |
440 | |
441 | rc = tifm_ms_check_status(host); |
442 | |
443 | } |
444 | |
445 | writel(TIFM_MS_SYS_INTCLR | readl(addr: sock->addr + SOCK_MS_SYSTEM), |
446 | addr: sock->addr + SOCK_MS_SYSTEM); |
447 | |
448 | if (!rc) |
449 | tifm_ms_complete_cmd(host); |
450 | |
451 | spin_unlock(lock: &sock->lock); |
452 | return; |
453 | } |
454 | |
455 | static void tifm_ms_req_tasklet(unsigned long data) |
456 | { |
457 | struct memstick_host *msh = (struct memstick_host *)data; |
458 | struct tifm_ms *host = memstick_priv(host: msh); |
459 | struct tifm_dev *sock = host->dev; |
460 | unsigned long flags; |
461 | int rc; |
462 | |
463 | spin_lock_irqsave(&sock->lock, flags); |
464 | if (!host->req) { |
465 | if (host->eject) { |
466 | do { |
467 | rc = memstick_next_req(host: msh, mrq: &host->req); |
468 | if (!rc) |
469 | host->req->error = -ETIME; |
470 | } while (!rc); |
471 | spin_unlock_irqrestore(lock: &sock->lock, flags); |
472 | return; |
473 | } |
474 | |
475 | do { |
476 | rc = memstick_next_req(host: msh, mrq: &host->req); |
477 | } while (!rc && tifm_ms_issue_cmd(host)); |
478 | } |
479 | spin_unlock_irqrestore(lock: &sock->lock, flags); |
480 | } |
481 | |
482 | static void tifm_ms_dummy_submit(struct memstick_host *msh) |
483 | { |
484 | return; |
485 | } |
486 | |
487 | static void tifm_ms_submit_req(struct memstick_host *msh) |
488 | { |
489 | struct tifm_ms *host = memstick_priv(host: msh); |
490 | |
491 | tasklet_schedule(t: &host->notify); |
492 | } |
493 | |
494 | static int tifm_ms_set_param(struct memstick_host *msh, |
495 | enum memstick_param param, |
496 | int value) |
497 | { |
498 | struct tifm_ms *host = memstick_priv(host: msh); |
499 | struct tifm_dev *sock = host->dev; |
500 | |
501 | switch (param) { |
502 | case MEMSTICK_POWER: |
503 | /* also affected by media detection mechanism */ |
504 | if (value == MEMSTICK_POWER_ON) { |
505 | host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI; |
506 | writel(TIFM_MS_SYS_RESET, addr: sock->addr + SOCK_MS_SYSTEM); |
507 | writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR, |
508 | addr: sock->addr + SOCK_MS_SYSTEM); |
509 | writel(val: 0xffffffff, addr: sock->addr + SOCK_MS_STATUS); |
510 | } else if (value == MEMSTICK_POWER_OFF) { |
511 | writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR, |
512 | addr: sock->addr + SOCK_MS_SYSTEM); |
513 | writel(val: 0xffffffff, addr: sock->addr + SOCK_MS_STATUS); |
514 | } else |
515 | return -EINVAL; |
516 | break; |
517 | case MEMSTICK_INTERFACE: |
518 | if (value == MEMSTICK_SERIAL) { |
519 | host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI; |
520 | writel(val: (~TIFM_CTRL_FAST_CLK) |
521 | & readl(addr: sock->addr + SOCK_CONTROL), |
522 | addr: sock->addr + SOCK_CONTROL); |
523 | } else if (value == MEMSTICK_PAR4) { |
524 | host->mode_mask = 0; |
525 | writel(TIFM_CTRL_FAST_CLK |
526 | | readl(addr: sock->addr + SOCK_CONTROL), |
527 | addr: sock->addr + SOCK_CONTROL); |
528 | } else |
529 | return -EINVAL; |
530 | break; |
531 | } |
532 | |
533 | return 0; |
534 | } |
535 | |
536 | static void tifm_ms_abort(struct timer_list *t) |
537 | { |
538 | struct tifm_ms *host = from_timer(host, t, timer); |
539 | |
540 | dev_dbg(&host->dev->dev, "status %x\n" , |
541 | readl(host->dev->addr + SOCK_MS_STATUS)); |
542 | printk(KERN_ERR |
543 | "%s : card failed to respond for a long period of time " |
544 | "(%x, %x)\n" , |
545 | dev_name(&host->dev->dev), host->req ? host->req->tpc : 0, |
546 | host->cmd_flags); |
547 | |
548 | tifm_eject(sock: host->dev); |
549 | } |
550 | |
551 | static int tifm_ms_probe(struct tifm_dev *sock) |
552 | { |
553 | struct memstick_host *msh; |
554 | struct tifm_ms *host; |
555 | int rc = -EIO; |
556 | |
557 | if (!(TIFM_SOCK_STATE_OCCUPIED |
558 | & readl(addr: sock->addr + SOCK_PRESENT_STATE))) { |
559 | printk(KERN_WARNING "%s : card gone, unexpectedly\n" , |
560 | dev_name(&sock->dev)); |
561 | return rc; |
562 | } |
563 | |
564 | msh = memstick_alloc_host(extra: sizeof(struct tifm_ms), dev: &sock->dev); |
565 | if (!msh) |
566 | return -ENOMEM; |
567 | |
568 | host = memstick_priv(host: msh); |
569 | tifm_set_drvdata(dev: sock, data: msh); |
570 | host->dev = sock; |
571 | host->timeout_jiffies = msecs_to_jiffies(m: 1000); |
572 | |
573 | timer_setup(&host->timer, tifm_ms_abort, 0); |
574 | tasklet_init(t: &host->notify, func: tifm_ms_req_tasklet, data: (unsigned long)msh); |
575 | |
576 | msh->request = tifm_ms_submit_req; |
577 | msh->set_param = tifm_ms_set_param; |
578 | sock->card_event = tifm_ms_card_event; |
579 | sock->data_event = tifm_ms_data_event; |
580 | if (tifm_has_ms_pif(sock)) |
581 | msh->caps |= MEMSTICK_CAP_PAR4; |
582 | |
583 | rc = memstick_add_host(host: msh); |
584 | if (!rc) |
585 | return 0; |
586 | |
587 | memstick_free_host(host: msh); |
588 | return rc; |
589 | } |
590 | |
591 | static void tifm_ms_remove(struct tifm_dev *sock) |
592 | { |
593 | struct memstick_host *msh = tifm_get_drvdata(dev: sock); |
594 | struct tifm_ms *host = memstick_priv(host: msh); |
595 | int rc = 0; |
596 | unsigned long flags; |
597 | |
598 | msh->request = tifm_ms_dummy_submit; |
599 | tasklet_kill(t: &host->notify); |
600 | spin_lock_irqsave(&sock->lock, flags); |
601 | host->eject = 1; |
602 | if (host->req) { |
603 | del_timer(timer: &host->timer); |
604 | writel(TIFM_FIFO_INT_SETALL, |
605 | addr: sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
606 | writel(TIFM_DMA_RESET, addr: sock->addr + SOCK_DMA_CONTROL); |
607 | if (host->use_dma) |
608 | tifm_unmap_sg(sock, sg: &host->req->sg, nents: 1, |
609 | direction: host->req->data_dir == READ |
610 | ? DMA_TO_DEVICE |
611 | : DMA_FROM_DEVICE); |
612 | host->req->error = -ETIME; |
613 | |
614 | do { |
615 | rc = memstick_next_req(host: msh, mrq: &host->req); |
616 | if (!rc) |
617 | host->req->error = -ETIME; |
618 | } while (!rc); |
619 | } |
620 | spin_unlock_irqrestore(lock: &sock->lock, flags); |
621 | |
622 | memstick_remove_host(host: msh); |
623 | memstick_free_host(host: msh); |
624 | } |
625 | |
626 | #ifdef CONFIG_PM |
627 | |
628 | static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state) |
629 | { |
630 | struct memstick_host *msh = tifm_get_drvdata(dev: sock); |
631 | |
632 | memstick_suspend_host(host: msh); |
633 | return 0; |
634 | } |
635 | |
636 | static int tifm_ms_resume(struct tifm_dev *sock) |
637 | { |
638 | struct memstick_host *msh = tifm_get_drvdata(dev: sock); |
639 | |
640 | memstick_resume_host(host: msh); |
641 | return 0; |
642 | } |
643 | |
644 | #else |
645 | |
646 | #define tifm_ms_suspend NULL |
647 | #define tifm_ms_resume NULL |
648 | |
649 | #endif /* CONFIG_PM */ |
650 | |
651 | static struct tifm_device_id tifm_ms_id_tbl[] = { |
652 | { TIFM_TYPE_MS }, { 0 } |
653 | }; |
654 | |
655 | static struct tifm_driver tifm_ms_driver = { |
656 | .driver = { |
657 | .name = DRIVER_NAME, |
658 | .owner = THIS_MODULE |
659 | }, |
660 | .id_table = tifm_ms_id_tbl, |
661 | .probe = tifm_ms_probe, |
662 | .remove = tifm_ms_remove, |
663 | .suspend = tifm_ms_suspend, |
664 | .resume = tifm_ms_resume |
665 | }; |
666 | |
667 | static int __init tifm_ms_init(void) |
668 | { |
669 | return tifm_register_driver(drv: &tifm_ms_driver); |
670 | } |
671 | |
672 | static void __exit tifm_ms_exit(void) |
673 | { |
674 | tifm_unregister_driver(drv: &tifm_ms_driver); |
675 | } |
676 | |
677 | MODULE_AUTHOR("Alex Dubov" ); |
678 | MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver" ); |
679 | MODULE_LICENSE("GPL" ); |
680 | MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl); |
681 | |
682 | module_init(tifm_ms_init); |
683 | module_exit(tifm_ms_exit); |
684 | |