Commit | Line | Data |
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e8d548d5 KM |
1 | /* |
2 | * Renesas USB driver | |
3 | * | |
4 | * Copyright (C) 2011 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
15 | * | |
16 | */ | |
17 | #include <linux/delay.h> | |
18 | #include <linux/io.h> | |
9c646cfc | 19 | #include <linux/scatterlist.h> |
cc502bb7 PB |
20 | #include "common.h" |
21 | #include "pipe.h" | |
e8d548d5 | 22 | |
d3af90a5 | 23 | #define usbhsf_get_cfifo(p) (&((p)->fifo_info.cfifo)) |
e73a9891 KM |
24 | #define usbhsf_get_d0fifo(p) (&((p)->fifo_info.d0fifo)) |
25 | #define usbhsf_get_d1fifo(p) (&((p)->fifo_info.d1fifo)) | |
5ea43994 | 26 | #define usbhsf_is_cfifo(p, f) (usbhsf_get_cfifo(p) == f) |
d3af90a5 | 27 | |
d77e3f4e KM |
28 | #define usbhsf_fifo_is_busy(f) ((f)->pipe) /* see usbhs_pipe_select_fifo */ |
29 | ||
4bd04811 | 30 | /* |
233f519d KM |
31 | * packet initialize |
32 | */ | |
33 | void usbhs_pkt_init(struct usbhs_pkt *pkt) | |
34 | { | |
233f519d KM |
35 | INIT_LIST_HEAD(&pkt->node); |
36 | } | |
37 | ||
38 | /* | |
39 | * packet control function | |
4bd04811 | 40 | */ |
97664a20 | 41 | static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done) |
dad67397 KM |
42 | { |
43 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); | |
44 | struct device *dev = usbhs_priv_to_dev(priv); | |
45 | ||
46 | dev_err(dev, "null handler\n"); | |
47 | ||
48 | return -EINVAL; | |
49 | } | |
50 | ||
51 | static struct usbhs_pkt_handle usbhsf_null_handler = { | |
52 | .prepare = usbhsf_null_handle, | |
53 | .try_run = usbhsf_null_handle, | |
54 | }; | |
55 | ||
659d4954 | 56 | void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, |
b331872b KM |
57 | void (*done)(struct usbhs_priv *priv, |
58 | struct usbhs_pkt *pkt), | |
3edeee38 | 59 | void *buf, int len, int zero, int sequence) |
6acb95d4 | 60 | { |
dad67397 KM |
61 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
62 | struct device *dev = usbhs_priv_to_dev(priv); | |
97664a20 KM |
63 | unsigned long flags; |
64 | ||
b331872b KM |
65 | if (!done) { |
66 | dev_err(dev, "no done function\n"); | |
67 | return; | |
68 | } | |
69 | ||
a2c76b83 KM |
70 | /******************** spin lock ********************/ |
71 | usbhs_lock(priv, flags); | |
72 | ||
0c6ef985 | 73 | if (!pipe->handler) { |
dad67397 | 74 | dev_err(dev, "no handler function\n"); |
0c6ef985 | 75 | pipe->handler = &usbhsf_null_handler; |
dad67397 KM |
76 | } |
77 | ||
d5261286 | 78 | list_move_tail(&pkt->node, &pipe->list); |
6acb95d4 | 79 | |
0c6ef985 KM |
80 | /* |
81 | * each pkt must hold own handler. | |
82 | * because handler might be changed by its situation. | |
83 | * dma handler -> pio handler. | |
84 | */ | |
659d4954 KM |
85 | pkt->pipe = pipe; |
86 | pkt->buf = buf; | |
0c6ef985 | 87 | pkt->handler = pipe->handler; |
659d4954 KM |
88 | pkt->length = len; |
89 | pkt->zero = zero; | |
90 | pkt->actual = 0; | |
b331872b | 91 | pkt->done = done; |
3edeee38 | 92 | pkt->sequence = sequence; |
97664a20 KM |
93 | |
94 | usbhs_unlock(priv, flags); | |
95 | /******************** spin unlock ******************/ | |
6acb95d4 KM |
96 | } |
97 | ||
97664a20 | 98 | static void __usbhsf_pkt_del(struct usbhs_pkt *pkt) |
6acb95d4 KM |
99 | { |
100 | list_del_init(&pkt->node); | |
101 | } | |
102 | ||
97664a20 | 103 | static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe) |
6acb95d4 KM |
104 | { |
105 | if (list_empty(&pipe->list)) | |
106 | return NULL; | |
107 | ||
d5261286 | 108 | return list_first_entry(&pipe->list, struct usbhs_pkt, node); |
6acb95d4 KM |
109 | } |
110 | ||
97664a20 KM |
111 | struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt) |
112 | { | |
113 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
114 | unsigned long flags; | |
115 | ||
116 | /******************** spin lock ********************/ | |
117 | usbhs_lock(priv, flags); | |
118 | ||
119 | if (!pkt) | |
120 | pkt = __usbhsf_pkt_get(pipe); | |
121 | ||
122 | if (pkt) | |
123 | __usbhsf_pkt_del(pkt); | |
124 | ||
125 | usbhs_unlock(priv, flags); | |
126 | /******************** spin unlock ******************/ | |
127 | ||
128 | return pkt; | |
129 | } | |
130 | ||
51b8a021 KM |
131 | enum { |
132 | USBHSF_PKT_PREPARE, | |
133 | USBHSF_PKT_TRY_RUN, | |
134 | USBHSF_PKT_DMA_DONE, | |
135 | }; | |
136 | ||
137 | static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type) | |
97664a20 KM |
138 | { |
139 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
97664a20 KM |
140 | struct usbhs_pkt *pkt; |
141 | struct device *dev = usbhs_priv_to_dev(priv); | |
142 | int (*func)(struct usbhs_pkt *pkt, int *is_done); | |
143 | unsigned long flags; | |
144 | int ret = 0; | |
145 | int is_done = 0; | |
146 | ||
147 | /******************** spin lock ********************/ | |
148 | usbhs_lock(priv, flags); | |
149 | ||
150 | pkt = __usbhsf_pkt_get(pipe); | |
151 | if (!pkt) | |
152 | goto __usbhs_pkt_handler_end; | |
153 | ||
154 | switch (type) { | |
155 | case USBHSF_PKT_PREPARE: | |
156 | func = pkt->handler->prepare; | |
157 | break; | |
158 | case USBHSF_PKT_TRY_RUN: | |
159 | func = pkt->handler->try_run; | |
160 | break; | |
e73a9891 KM |
161 | case USBHSF_PKT_DMA_DONE: |
162 | func = pkt->handler->dma_done; | |
163 | break; | |
97664a20 | 164 | default: |
984e833c | 165 | dev_err(dev, "unknown pkt handler\n"); |
97664a20 KM |
166 | goto __usbhs_pkt_handler_end; |
167 | } | |
168 | ||
5a6df60e YS |
169 | if (likely(func)) |
170 | ret = func(pkt, &is_done); | |
97664a20 KM |
171 | |
172 | if (is_done) | |
173 | __usbhsf_pkt_del(pkt); | |
174 | ||
175 | __usbhs_pkt_handler_end: | |
176 | usbhs_unlock(priv, flags); | |
177 | /******************** spin unlock ******************/ | |
178 | ||
0432eed0 | 179 | if (is_done) { |
b331872b | 180 | pkt->done(priv, pkt); |
0432eed0 KM |
181 | usbhs_pkt_start(pipe); |
182 | } | |
97664a20 KM |
183 | |
184 | return ret; | |
185 | } | |
186 | ||
51b8a021 KM |
187 | void usbhs_pkt_start(struct usbhs_pipe *pipe) |
188 | { | |
189 | usbhsf_pkt_handler(pipe, USBHSF_PKT_PREPARE); | |
190 | } | |
191 | ||
659d4954 KM |
192 | /* |
193 | * irq enable/disable function | |
194 | */ | |
3192fcb2 KM |
195 | #define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_bempsts, e) |
196 | #define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_brdysts, e) | |
659d4954 KM |
197 | #define usbhsf_irq_callback_ctrl(pipe, status, enable) \ |
198 | ({ \ | |
199 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \ | |
200 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); \ | |
201 | u16 status = (1 << usbhs_pipe_number(pipe)); \ | |
202 | if (!mod) \ | |
203 | return; \ | |
204 | if (enable) \ | |
3192fcb2 | 205 | mod->status |= status; \ |
659d4954 | 206 | else \ |
3192fcb2 | 207 | mod->status &= ~status; \ |
659d4954 KM |
208 | usbhs_irq_callback_update(priv, mod); \ |
209 | }) | |
210 | ||
211 | static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable) | |
212 | { | |
213 | /* | |
214 | * And DCP pipe can NOT use "ready interrupt" for "send" | |
215 | * it should use "empty" interrupt. | |
216 | * see | |
217 | * "Operation" - "Interrupt Function" - "BRDY Interrupt" | |
218 | * | |
219 | * on the other hand, normal pipe can use "ready interrupt" for "send" | |
220 | * even though it is single/double buffer | |
221 | */ | |
222 | if (usbhs_pipe_is_dcp(pipe)) | |
223 | usbhsf_irq_empty_ctrl(pipe, enable); | |
224 | else | |
225 | usbhsf_irq_ready_ctrl(pipe, enable); | |
226 | } | |
227 | ||
228 | static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable) | |
229 | { | |
230 | usbhsf_irq_ready_ctrl(pipe, enable); | |
231 | } | |
232 | ||
e8d548d5 KM |
233 | /* |
234 | * FIFO ctrl | |
235 | */ | |
d3af90a5 KM |
236 | static void usbhsf_send_terminator(struct usbhs_pipe *pipe, |
237 | struct usbhs_fifo *fifo) | |
e8d548d5 KM |
238 | { |
239 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
240 | ||
d3af90a5 | 241 | usbhs_bset(priv, fifo->ctr, BVAL, BVAL); |
e8d548d5 KM |
242 | } |
243 | ||
d3af90a5 KM |
244 | static int usbhsf_fifo_barrier(struct usbhs_priv *priv, |
245 | struct usbhs_fifo *fifo) | |
e8d548d5 KM |
246 | { |
247 | int timeout = 1024; | |
248 | ||
249 | do { | |
250 | /* The FIFO port is accessible */ | |
d3af90a5 | 251 | if (usbhs_read(priv, fifo->ctr) & FRDY) |
e8d548d5 KM |
252 | return 0; |
253 | ||
254 | udelay(10); | |
255 | } while (timeout--); | |
256 | ||
257 | return -EBUSY; | |
258 | } | |
259 | ||
d3af90a5 KM |
260 | static void usbhsf_fifo_clear(struct usbhs_pipe *pipe, |
261 | struct usbhs_fifo *fifo) | |
e8d548d5 KM |
262 | { |
263 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
b974ab50 | 264 | int ret = 0; |
e8d548d5 | 265 | |
5abdd6e8 YS |
266 | if (!usbhs_pipe_is_dcp(pipe)) { |
267 | /* | |
268 | * This driver checks the pipe condition first to avoid -EBUSY | |
269 | * from usbhsf_fifo_barrier() with about 10 msec delay in | |
270 | * the interrupt handler if the pipe is RX direction and empty. | |
271 | */ | |
272 | if (usbhs_pipe_is_dir_in(pipe)) | |
273 | ret = usbhs_pipe_is_accessible(pipe); | |
274 | if (!ret) | |
275 | ret = usbhsf_fifo_barrier(priv, fifo); | |
276 | } | |
e8d548d5 | 277 | |
b974ab50 YS |
278 | /* |
279 | * if non-DCP pipe, this driver should set BCLR when | |
280 | * usbhsf_fifo_barrier() returns 0. | |
281 | */ | |
282 | if (!ret) | |
283 | usbhs_write(priv, fifo->ctr, BCLR); | |
e8d548d5 KM |
284 | } |
285 | ||
d3af90a5 KM |
286 | static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv, |
287 | struct usbhs_fifo *fifo) | |
e8d548d5 | 288 | { |
d3af90a5 | 289 | return usbhs_read(priv, fifo->ctr) & DTLN_MASK; |
e8d548d5 KM |
290 | } |
291 | ||
d77e3f4e KM |
292 | static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, |
293 | struct usbhs_fifo *fifo) | |
294 | { | |
295 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
296 | ||
297 | usbhs_pipe_select_fifo(pipe, NULL); | |
298 | usbhs_write(priv, fifo->sel, 0); | |
299 | } | |
300 | ||
d3af90a5 KM |
301 | static int usbhsf_fifo_select(struct usbhs_pipe *pipe, |
302 | struct usbhs_fifo *fifo, | |
303 | int write) | |
e8d548d5 KM |
304 | { |
305 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
306 | struct device *dev = usbhs_priv_to_dev(priv); | |
307 | int timeout = 1024; | |
308 | u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */ | |
309 | u16 base = usbhs_pipe_number(pipe); /* CURPIPE */ | |
310 | ||
d77e3f4e KM |
311 | if (usbhs_pipe_is_busy(pipe) || |
312 | usbhsf_fifo_is_busy(fifo)) | |
313 | return -EBUSY; | |
314 | ||
92352071 | 315 | if (usbhs_pipe_is_dcp(pipe)) { |
e8d548d5 KM |
316 | base |= (1 == write) << 5; /* ISEL */ |
317 | ||
92352071 KM |
318 | if (usbhs_mod_is_host(priv)) |
319 | usbhs_dcp_dir_for_host(pipe, write); | |
320 | } | |
321 | ||
e8d548d5 | 322 | /* "base" will be used below */ |
5ea43994 SY |
323 | if (usbhs_get_dparam(priv, has_sudmac) && !usbhsf_is_cfifo(priv, fifo)) |
324 | usbhs_write(priv, fifo->sel, base); | |
325 | else | |
326 | usbhs_write(priv, fifo->sel, base | MBW_32); | |
e8d548d5 KM |
327 | |
328 | /* check ISEL and CURPIPE value */ | |
329 | while (timeout--) { | |
d77e3f4e KM |
330 | if (base == (mask & usbhs_read(priv, fifo->sel))) { |
331 | usbhs_pipe_select_fifo(pipe, fifo); | |
e8d548d5 | 332 | return 0; |
d77e3f4e | 333 | } |
e8d548d5 KM |
334 | udelay(10); |
335 | } | |
336 | ||
337 | dev_err(dev, "fifo select error\n"); | |
338 | ||
339 | return -EIO; | |
340 | } | |
341 | ||
9e74d601 KM |
342 | /* |
343 | * DCP status stage | |
344 | */ | |
345 | static int usbhs_dcp_dir_switch_to_write(struct usbhs_pkt *pkt, int *is_done) | |
346 | { | |
347 | struct usbhs_pipe *pipe = pkt->pipe; | |
348 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
349 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ | |
350 | struct device *dev = usbhs_priv_to_dev(priv); | |
351 | int ret; | |
352 | ||
353 | usbhs_pipe_disable(pipe); | |
354 | ||
355 | ret = usbhsf_fifo_select(pipe, fifo, 1); | |
356 | if (ret < 0) { | |
357 | dev_err(dev, "%s() faile\n", __func__); | |
358 | return ret; | |
359 | } | |
360 | ||
361 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
362 | ||
363 | usbhsf_fifo_clear(pipe, fifo); | |
364 | usbhsf_send_terminator(pipe, fifo); | |
365 | ||
366 | usbhsf_fifo_unselect(pipe, fifo); | |
367 | ||
368 | usbhsf_tx_irq_ctrl(pipe, 1); | |
369 | usbhs_pipe_enable(pipe); | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
374 | static int usbhs_dcp_dir_switch_to_read(struct usbhs_pkt *pkt, int *is_done) | |
375 | { | |
376 | struct usbhs_pipe *pipe = pkt->pipe; | |
377 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
378 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ | |
379 | struct device *dev = usbhs_priv_to_dev(priv); | |
380 | int ret; | |
381 | ||
382 | usbhs_pipe_disable(pipe); | |
383 | ||
384 | ret = usbhsf_fifo_select(pipe, fifo, 0); | |
385 | if (ret < 0) { | |
386 | dev_err(dev, "%s() fail\n", __func__); | |
387 | return ret; | |
388 | } | |
389 | ||
390 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
391 | usbhsf_fifo_clear(pipe, fifo); | |
392 | ||
393 | usbhsf_fifo_unselect(pipe, fifo); | |
394 | ||
395 | usbhsf_rx_irq_ctrl(pipe, 1); | |
396 | usbhs_pipe_enable(pipe); | |
397 | ||
398 | return ret; | |
399 | ||
400 | } | |
401 | ||
402 | static int usbhs_dcp_dir_switch_done(struct usbhs_pkt *pkt, int *is_done) | |
403 | { | |
404 | struct usbhs_pipe *pipe = pkt->pipe; | |
405 | ||
406 | if (pkt->handler == &usbhs_dcp_status_stage_in_handler) | |
407 | usbhsf_tx_irq_ctrl(pipe, 0); | |
408 | else | |
409 | usbhsf_rx_irq_ctrl(pipe, 0); | |
410 | ||
411 | pkt->actual = pkt->length; | |
412 | *is_done = 1; | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler = { | |
418 | .prepare = usbhs_dcp_dir_switch_to_write, | |
419 | .try_run = usbhs_dcp_dir_switch_done, | |
420 | }; | |
421 | ||
422 | struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler = { | |
423 | .prepare = usbhs_dcp_dir_switch_to_read, | |
424 | .try_run = usbhs_dcp_dir_switch_done, | |
425 | }; | |
426 | ||
427 | /* | |
428 | * DCP data stage (push) | |
429 | */ | |
430 | static int usbhsf_dcp_data_stage_try_push(struct usbhs_pkt *pkt, int *is_done) | |
431 | { | |
432 | struct usbhs_pipe *pipe = pkt->pipe; | |
433 | ||
434 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
435 | ||
436 | /* | |
437 | * change handler to PIO push | |
438 | */ | |
439 | pkt->handler = &usbhs_fifo_pio_push_handler; | |
440 | ||
441 | return pkt->handler->prepare(pkt, is_done); | |
442 | } | |
443 | ||
444 | struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler = { | |
445 | .prepare = usbhsf_dcp_data_stage_try_push, | |
446 | }; | |
447 | ||
448 | /* | |
449 | * DCP data stage (pop) | |
450 | */ | |
451 | static int usbhsf_dcp_data_stage_prepare_pop(struct usbhs_pkt *pkt, | |
452 | int *is_done) | |
453 | { | |
454 | struct usbhs_pipe *pipe = pkt->pipe; | |
455 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
456 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); | |
457 | ||
458 | if (usbhs_pipe_is_busy(pipe)) | |
459 | return 0; | |
460 | ||
461 | /* | |
462 | * prepare pop for DCP should | |
463 | * - change DCP direction, | |
464 | * - clear fifo | |
465 | * - DATA1 | |
466 | */ | |
467 | usbhs_pipe_disable(pipe); | |
468 | ||
469 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
470 | ||
471 | usbhsf_fifo_select(pipe, fifo, 0); | |
472 | usbhsf_fifo_clear(pipe, fifo); | |
473 | usbhsf_fifo_unselect(pipe, fifo); | |
474 | ||
475 | /* | |
476 | * change handler to PIO pop | |
477 | */ | |
478 | pkt->handler = &usbhs_fifo_pio_pop_handler; | |
479 | ||
480 | return pkt->handler->prepare(pkt, is_done); | |
481 | } | |
482 | ||
483 | struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler = { | |
484 | .prepare = usbhsf_dcp_data_stage_prepare_pop, | |
485 | }; | |
486 | ||
e8d548d5 | 487 | /* |
233f519d | 488 | * PIO push handler |
e8d548d5 | 489 | */ |
0cb7e61d | 490 | static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done) |
e8d548d5 | 491 | { |
4bd04811 | 492 | struct usbhs_pipe *pipe = pkt->pipe; |
e8d548d5 | 493 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
659d4954 | 494 | struct device *dev = usbhs_priv_to_dev(priv); |
d3af90a5 KM |
495 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ |
496 | void __iomem *addr = priv->base + fifo->port; | |
659d4954 | 497 | u8 *buf; |
e8d548d5 KM |
498 | int maxp = usbhs_pipe_get_maxpacket(pipe); |
499 | int total_len; | |
4bd04811 | 500 | int i, ret, len; |
97664a20 | 501 | int is_short; |
e8d548d5 | 502 | |
3edeee38 KM |
503 | usbhs_pipe_data_sequence(pipe, pkt->sequence); |
504 | pkt->sequence = -1; /* -1 sequence will be ignored */ | |
505 | ||
1c90ee0b KM |
506 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); |
507 | ||
d3af90a5 | 508 | ret = usbhsf_fifo_select(pipe, fifo, 1); |
e8d548d5 | 509 | if (ret < 0) |
d77e3f4e | 510 | return 0; |
e8d548d5 | 511 | |
dad67397 | 512 | ret = usbhs_pipe_is_accessible(pipe); |
4ef85e0f KM |
513 | if (ret < 0) { |
514 | /* inaccessible pipe is not an error */ | |
515 | ret = 0; | |
659d4954 | 516 | goto usbhs_fifo_write_busy; |
4ef85e0f | 517 | } |
e8d548d5 | 518 | |
d3af90a5 | 519 | ret = usbhsf_fifo_barrier(priv, fifo); |
e8d548d5 | 520 | if (ret < 0) |
659d4954 | 521 | goto usbhs_fifo_write_busy; |
e8d548d5 | 522 | |
659d4954 KM |
523 | buf = pkt->buf + pkt->actual; |
524 | len = pkt->length - pkt->actual; | |
525 | len = min(len, maxp); | |
526 | total_len = len; | |
527 | is_short = total_len < maxp; | |
e8d548d5 KM |
528 | |
529 | /* | |
530 | * FIXME | |
531 | * | |
532 | * 32-bit access only | |
533 | */ | |
659d4954 | 534 | if (len >= 4 && !((unsigned long)buf & 0x03)) { |
e8d548d5 KM |
535 | iowrite32_rep(addr, buf, len / 4); |
536 | len %= 4; | |
537 | buf += total_len - len; | |
538 | } | |
539 | ||
540 | /* the rest operation */ | |
541 | for (i = 0; i < len; i++) | |
542 | iowrite8(buf[i], addr + (0x03 - (i & 0x03))); | |
543 | ||
659d4954 KM |
544 | /* |
545 | * variable update | |
546 | */ | |
547 | pkt->actual += total_len; | |
548 | ||
549 | if (pkt->actual < pkt->length) | |
97664a20 | 550 | *is_done = 0; /* there are remainder data */ |
659d4954 | 551 | else if (is_short) |
97664a20 | 552 | *is_done = 1; /* short packet */ |
659d4954 | 553 | else |
97664a20 | 554 | *is_done = !pkt->zero; /* send zero packet ? */ |
659d4954 KM |
555 | |
556 | /* | |
557 | * pipe/irq handling | |
558 | */ | |
559 | if (is_short) | |
d3af90a5 | 560 | usbhsf_send_terminator(pipe, fifo); |
e8d548d5 | 561 | |
97664a20 | 562 | usbhsf_tx_irq_ctrl(pipe, !*is_done); |
58e47d43 | 563 | usbhs_pipe_running(pipe, !*is_done); |
4bd04811 KM |
564 | usbhs_pipe_enable(pipe); |
565 | ||
659d4954 KM |
566 | dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n", |
567 | usbhs_pipe_number(pipe), | |
97664a20 | 568 | pkt->length, pkt->actual, *is_done, pkt->zero); |
659d4954 KM |
569 | |
570 | /* | |
571 | * Transmission end | |
572 | */ | |
97664a20 | 573 | if (*is_done) { |
659d4954 KM |
574 | if (usbhs_pipe_is_dcp(pipe)) |
575 | usbhs_dcp_control_transfer_done(pipe); | |
4bd04811 KM |
576 | } |
577 | ||
d77e3f4e KM |
578 | usbhsf_fifo_unselect(pipe, fifo); |
579 | ||
4bd04811 | 580 | return 0; |
659d4954 KM |
581 | |
582 | usbhs_fifo_write_busy: | |
d77e3f4e KM |
583 | usbhsf_fifo_unselect(pipe, fifo); |
584 | ||
659d4954 KM |
585 | /* |
586 | * pipe is busy. | |
587 | * retry in interrupt | |
588 | */ | |
589 | usbhsf_tx_irq_ctrl(pipe, 1); | |
58e47d43 | 590 | usbhs_pipe_running(pipe, 1); |
659d4954 KM |
591 | |
592 | return ret; | |
e8d548d5 KM |
593 | } |
594 | ||
58e47d43 YS |
595 | static int usbhsf_pio_prepare_push(struct usbhs_pkt *pkt, int *is_done) |
596 | { | |
597 | if (usbhs_pipe_is_running(pkt->pipe)) | |
598 | return 0; | |
599 | ||
600 | return usbhsf_pio_try_push(pkt, is_done); | |
601 | } | |
602 | ||
0cb7e61d | 603 | struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = { |
58e47d43 | 604 | .prepare = usbhsf_pio_prepare_push, |
0cb7e61d | 605 | .try_run = usbhsf_pio_try_push, |
dad67397 KM |
606 | }; |
607 | ||
233f519d KM |
608 | /* |
609 | * PIO pop handler | |
610 | */ | |
97664a20 | 611 | static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done) |
e8d548d5 | 612 | { |
dad67397 | 613 | struct usbhs_pipe *pipe = pkt->pipe; |
d77e3f4e KM |
614 | |
615 | if (usbhs_pipe_is_busy(pipe)) | |
616 | return 0; | |
e8d548d5 | 617 | |
58e47d43 YS |
618 | if (usbhs_pipe_is_running(pipe)) |
619 | return 0; | |
620 | ||
e8d548d5 | 621 | /* |
d77e3f4e | 622 | * pipe enable to prepare packet receive |
e8d548d5 | 623 | */ |
3edeee38 KM |
624 | usbhs_pipe_data_sequence(pipe, pkt->sequence); |
625 | pkt->sequence = -1; /* -1 sequence will be ignored */ | |
e8d548d5 | 626 | |
1c90ee0b | 627 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); |
e8d548d5 | 628 | usbhs_pipe_enable(pipe); |
58e47d43 | 629 | usbhs_pipe_running(pipe, 1); |
659d4954 | 630 | usbhsf_rx_irq_ctrl(pipe, 1); |
e8d548d5 | 631 | |
d3af90a5 | 632 | return 0; |
e8d548d5 KM |
633 | } |
634 | ||
0cb7e61d | 635 | static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done) |
e8d548d5 | 636 | { |
4bd04811 | 637 | struct usbhs_pipe *pipe = pkt->pipe; |
e8d548d5 | 638 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
659d4954 | 639 | struct device *dev = usbhs_priv_to_dev(priv); |
d3af90a5 KM |
640 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ |
641 | void __iomem *addr = priv->base + fifo->port; | |
659d4954 KM |
642 | u8 *buf; |
643 | u32 data = 0; | |
644 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
4bd04811 | 645 | int rcv_len, len; |
e8d548d5 | 646 | int i, ret; |
4bd04811 | 647 | int total_len = 0; |
e8d548d5 | 648 | |
d3af90a5 | 649 | ret = usbhsf_fifo_select(pipe, fifo, 0); |
e8d548d5 | 650 | if (ret < 0) |
d77e3f4e | 651 | return 0; |
e8d548d5 | 652 | |
d3af90a5 | 653 | ret = usbhsf_fifo_barrier(priv, fifo); |
e8d548d5 | 654 | if (ret < 0) |
d77e3f4e | 655 | goto usbhs_fifo_read_busy; |
e8d548d5 | 656 | |
d3af90a5 | 657 | rcv_len = usbhsf_fifo_rcv_len(priv, fifo); |
e8d548d5 | 658 | |
659d4954 KM |
659 | buf = pkt->buf + pkt->actual; |
660 | len = pkt->length - pkt->actual; | |
661 | len = min(len, rcv_len); | |
662 | total_len = len; | |
663 | ||
6ff5d09b KM |
664 | /* |
665 | * update actual length first here to decide disable pipe. | |
666 | * if this pipe keeps BUF status and all data were popped, | |
667 | * then, next interrupt/token will be issued again | |
668 | */ | |
669 | pkt->actual += total_len; | |
670 | ||
671 | if ((pkt->actual == pkt->length) || /* receive all data */ | |
672 | (total_len < maxp)) { /* short packet */ | |
673 | *is_done = 1; | |
674 | usbhsf_rx_irq_ctrl(pipe, 0); | |
58e47d43 | 675 | usbhs_pipe_running(pipe, 0); |
6ff5d09b KM |
676 | usbhs_pipe_disable(pipe); /* disable pipe first */ |
677 | } | |
678 | ||
e8d548d5 KM |
679 | /* |
680 | * Buffer clear if Zero-Length packet | |
681 | * | |
682 | * see | |
683 | * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function" | |
684 | */ | |
685 | if (0 == rcv_len) { | |
3edeee38 | 686 | pkt->zero = 1; |
d3af90a5 | 687 | usbhsf_fifo_clear(pipe, fifo); |
4bd04811 | 688 | goto usbhs_fifo_read_end; |
e8d548d5 KM |
689 | } |
690 | ||
e8d548d5 KM |
691 | /* |
692 | * FIXME | |
693 | * | |
694 | * 32-bit access only | |
695 | */ | |
659d4954 | 696 | if (len >= 4 && !((unsigned long)buf & 0x03)) { |
e8d548d5 KM |
697 | ioread32_rep(addr, buf, len / 4); |
698 | len %= 4; | |
659d4954 | 699 | buf += total_len - len; |
e8d548d5 KM |
700 | } |
701 | ||
702 | /* the rest operation */ | |
703 | for (i = 0; i < len; i++) { | |
704 | if (!(i & 0x03)) | |
705 | data = ioread32(addr); | |
706 | ||
707 | buf[i] = (data >> ((i & 0x03) * 8)) & 0xff; | |
708 | } | |
709 | ||
4bd04811 | 710 | usbhs_fifo_read_end: |
97664a20 KM |
711 | dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n", |
712 | usbhs_pipe_number(pipe), | |
713 | pkt->length, pkt->actual, *is_done, pkt->zero); | |
714 | ||
d77e3f4e KM |
715 | usbhs_fifo_read_busy: |
716 | usbhsf_fifo_unselect(pipe, fifo); | |
717 | ||
718 | return ret; | |
e8d548d5 | 719 | } |
dad67397 | 720 | |
0cb7e61d | 721 | struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler = { |
dad67397 | 722 | .prepare = usbhsf_prepare_pop, |
0cb7e61d | 723 | .try_run = usbhsf_pio_try_pop, |
dad67397 KM |
724 | }; |
725 | ||
726 | /* | |
233f519d | 727 | * DCP ctrol statge handler |
dad67397 | 728 | */ |
97664a20 | 729 | static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt, int *is_done) |
dad67397 | 730 | { |
97664a20 | 731 | usbhs_dcp_control_transfer_done(pkt->pipe); |
dad67397 | 732 | |
97664a20 | 733 | *is_done = 1; |
dad67397 KM |
734 | |
735 | return 0; | |
736 | } | |
737 | ||
738 | struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = { | |
739 | .prepare = usbhsf_ctrl_stage_end, | |
740 | .try_run = usbhsf_ctrl_stage_end, | |
741 | }; | |
742 | ||
e73a9891 KM |
743 | /* |
744 | * DMA fifo functions | |
745 | */ | |
746 | static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, | |
747 | struct usbhs_pkt *pkt) | |
748 | { | |
749 | if (&usbhs_fifo_dma_push_handler == pkt->handler) | |
750 | return fifo->tx_chan; | |
751 | ||
752 | if (&usbhs_fifo_dma_pop_handler == pkt->handler) | |
753 | return fifo->rx_chan; | |
754 | ||
755 | return NULL; | |
756 | } | |
757 | ||
758 | static struct usbhs_fifo *usbhsf_get_dma_fifo(struct usbhs_priv *priv, | |
759 | struct usbhs_pkt *pkt) | |
760 | { | |
761 | struct usbhs_fifo *fifo; | |
762 | ||
763 | /* DMA :: D0FIFO */ | |
764 | fifo = usbhsf_get_d0fifo(priv); | |
765 | if (usbhsf_dma_chan_get(fifo, pkt) && | |
766 | !usbhsf_fifo_is_busy(fifo)) | |
767 | return fifo; | |
768 | ||
769 | /* DMA :: D1FIFO */ | |
770 | fifo = usbhsf_get_d1fifo(priv); | |
771 | if (usbhsf_dma_chan_get(fifo, pkt) && | |
772 | !usbhsf_fifo_is_busy(fifo)) | |
773 | return fifo; | |
774 | ||
775 | return NULL; | |
776 | } | |
777 | ||
778 | #define usbhsf_dma_start(p, f) __usbhsf_dma_ctrl(p, f, DREQE) | |
779 | #define usbhsf_dma_stop(p, f) __usbhsf_dma_ctrl(p, f, 0) | |
780 | static void __usbhsf_dma_ctrl(struct usbhs_pipe *pipe, | |
781 | struct usbhs_fifo *fifo, | |
782 | u16 dreqe) | |
783 | { | |
784 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
785 | ||
786 | usbhs_bset(priv, fifo->sel, DREQE, dreqe); | |
787 | } | |
788 | ||
789 | #define usbhsf_dma_map(p) __usbhsf_dma_map_ctrl(p, 1) | |
790 | #define usbhsf_dma_unmap(p) __usbhsf_dma_map_ctrl(p, 0) | |
791 | static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
792 | { | |
793 | struct usbhs_pipe *pipe = pkt->pipe; | |
794 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
795 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); | |
796 | ||
797 | return info->dma_map_ctrl(pkt, map); | |
798 | } | |
799 | ||
800 | static void usbhsf_dma_complete(void *arg); | |
6e4b74e4 | 801 | static void xfer_work(struct work_struct *work) |
e73a9891 | 802 | { |
6e4b74e4 | 803 | struct usbhs_pkt *pkt = container_of(work, struct usbhs_pkt, work); |
e73a9891 KM |
804 | struct usbhs_pipe *pipe = pkt->pipe; |
805 | struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); | |
806 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
e73a9891 KM |
807 | struct dma_async_tx_descriptor *desc; |
808 | struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt); | |
809 | struct device *dev = usbhs_priv_to_dev(priv); | |
55ba4e5e | 810 | enum dma_transfer_direction dir; |
e73a9891 | 811 | |
55ba4e5e | 812 | dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV; |
e73a9891 | 813 | |
2f0de9d8 KM |
814 | desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual, |
815 | pkt->trans, dir, | |
16052827 | 816 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
e73a9891 KM |
817 | if (!desc) |
818 | return; | |
819 | ||
820 | desc->callback = usbhsf_dma_complete; | |
821 | desc->callback_param = pipe; | |
822 | ||
2f0de9d8 | 823 | if (dmaengine_submit(desc) < 0) { |
e73a9891 KM |
824 | dev_err(dev, "Failed to submit dma descriptor\n"); |
825 | return; | |
826 | } | |
827 | ||
828 | dev_dbg(dev, " %s %d (%d/ %d)\n", | |
829 | fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero); | |
830 | ||
58e47d43 | 831 | usbhs_pipe_running(pipe, 1); |
b2453bd4 | 832 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans); |
e73a9891 | 833 | dma_async_issue_pending(chan); |
9a95fe3d | 834 | usbhsf_dma_start(pipe, fifo); |
b2453bd4 | 835 | usbhs_pipe_enable(pipe); |
e73a9891 KM |
836 | } |
837 | ||
233f519d KM |
838 | /* |
839 | * DMA push handler | |
840 | */ | |
e73a9891 KM |
841 | static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) |
842 | { | |
843 | struct usbhs_pipe *pipe = pkt->pipe; | |
844 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
845 | struct usbhs_fifo *fifo; | |
846 | int len = pkt->length - pkt->actual; | |
847 | int ret; | |
848 | ||
849 | if (usbhs_pipe_is_busy(pipe)) | |
850 | return 0; | |
851 | ||
852 | /* use PIO if packet is less than pio_dma_border or pipe is DCP */ | |
853 | if ((len < usbhs_get_dparam(priv, pio_dma_border)) || | |
854 | usbhs_pipe_is_dcp(pipe)) | |
855 | goto usbhsf_pio_prepare_push; | |
856 | ||
77975eec | 857 | if (len & 0x7) /* 8byte alignment */ |
e73a9891 KM |
858 | goto usbhsf_pio_prepare_push; |
859 | ||
c9ae0c91 | 860 | if ((uintptr_t)(pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */ |
9a12d097 KM |
861 | goto usbhsf_pio_prepare_push; |
862 | ||
58e47d43 YS |
863 | /* return at this time if the pipe is running */ |
864 | if (usbhs_pipe_is_running(pipe)) | |
865 | return 0; | |
866 | ||
e73a9891 KM |
867 | /* get enable DMA fifo */ |
868 | fifo = usbhsf_get_dma_fifo(priv, pkt); | |
869 | if (!fifo) | |
870 | goto usbhsf_pio_prepare_push; | |
871 | ||
872 | if (usbhsf_dma_map(pkt) < 0) | |
873 | goto usbhsf_pio_prepare_push; | |
874 | ||
875 | ret = usbhsf_fifo_select(pipe, fifo, 0); | |
876 | if (ret < 0) | |
877 | goto usbhsf_pio_prepare_push_unmap; | |
878 | ||
879 | pkt->trans = len; | |
880 | ||
6e4b74e4 GL |
881 | INIT_WORK(&pkt->work, xfer_work); |
882 | schedule_work(&pkt->work); | |
e73a9891 KM |
883 | |
884 | return 0; | |
885 | ||
886 | usbhsf_pio_prepare_push_unmap: | |
887 | usbhsf_dma_unmap(pkt); | |
888 | usbhsf_pio_prepare_push: | |
889 | /* | |
890 | * change handler to PIO | |
891 | */ | |
892 | pkt->handler = &usbhs_fifo_pio_push_handler; | |
893 | ||
894 | return pkt->handler->prepare(pkt, is_done); | |
895 | } | |
896 | ||
897 | static int usbhsf_dma_push_done(struct usbhs_pkt *pkt, int *is_done) | |
898 | { | |
899 | struct usbhs_pipe *pipe = pkt->pipe; | |
900 | ||
901 | pkt->actual = pkt->trans; | |
902 | ||
903 | *is_done = !pkt->zero; /* send zero packet ? */ | |
58e47d43 | 904 | usbhs_pipe_running(pipe, !*is_done); |
e73a9891 KM |
905 | |
906 | usbhsf_dma_stop(pipe, pipe->fifo); | |
907 | usbhsf_dma_unmap(pkt); | |
908 | usbhsf_fifo_unselect(pipe, pipe->fifo); | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | struct usbhs_pkt_handle usbhs_fifo_dma_push_handler = { | |
914 | .prepare = usbhsf_dma_prepare_push, | |
915 | .dma_done = usbhsf_dma_push_done, | |
916 | }; | |
917 | ||
233f519d KM |
918 | /* |
919 | * DMA pop handler | |
920 | */ | |
e73a9891 KM |
921 | static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done) |
922 | { | |
923 | struct usbhs_pipe *pipe = pkt->pipe; | |
924 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
925 | struct usbhs_fifo *fifo; | |
926 | int len, ret; | |
927 | ||
928 | if (usbhs_pipe_is_busy(pipe)) | |
929 | return 0; | |
930 | ||
931 | if (usbhs_pipe_is_dcp(pipe)) | |
932 | goto usbhsf_pio_prepare_pop; | |
933 | ||
934 | /* get enable DMA fifo */ | |
935 | fifo = usbhsf_get_dma_fifo(priv, pkt); | |
936 | if (!fifo) | |
937 | goto usbhsf_pio_prepare_pop; | |
938 | ||
c9ae0c91 | 939 | if ((uintptr_t)(pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */ |
9a12d097 KM |
940 | goto usbhsf_pio_prepare_pop; |
941 | ||
e73a9891 KM |
942 | ret = usbhsf_fifo_select(pipe, fifo, 0); |
943 | if (ret < 0) | |
944 | goto usbhsf_pio_prepare_pop; | |
945 | ||
946 | /* use PIO if packet is less than pio_dma_border */ | |
947 | len = usbhsf_fifo_rcv_len(priv, fifo); | |
948 | len = min(pkt->length - pkt->actual, len); | |
77975eec | 949 | if (len & 0x7) /* 8byte alignment */ |
e73a9891 KM |
950 | goto usbhsf_pio_prepare_pop_unselect; |
951 | ||
952 | if (len < usbhs_get_dparam(priv, pio_dma_border)) | |
953 | goto usbhsf_pio_prepare_pop_unselect; | |
954 | ||
955 | ret = usbhsf_fifo_barrier(priv, fifo); | |
956 | if (ret < 0) | |
957 | goto usbhsf_pio_prepare_pop_unselect; | |
958 | ||
959 | if (usbhsf_dma_map(pkt) < 0) | |
960 | goto usbhsf_pio_prepare_pop_unselect; | |
961 | ||
962 | /* DMA */ | |
963 | ||
964 | /* | |
965 | * usbhs_fifo_dma_pop_handler :: prepare | |
966 | * enabled irq to come here. | |
967 | * but it is no longer needed for DMA. disable it. | |
968 | */ | |
969 | usbhsf_rx_irq_ctrl(pipe, 0); | |
970 | ||
971 | pkt->trans = len; | |
972 | ||
4407936b | 973 | usbhsf_tx_irq_ctrl(pipe, 0); |
6e4b74e4 GL |
974 | INIT_WORK(&pkt->work, xfer_work); |
975 | schedule_work(&pkt->work); | |
e73a9891 KM |
976 | |
977 | return 0; | |
978 | ||
979 | usbhsf_pio_prepare_pop_unselect: | |
980 | usbhsf_fifo_unselect(pipe, fifo); | |
981 | usbhsf_pio_prepare_pop: | |
982 | ||
983 | /* | |
984 | * change handler to PIO | |
985 | */ | |
986 | pkt->handler = &usbhs_fifo_pio_pop_handler; | |
987 | ||
988 | return pkt->handler->try_run(pkt, is_done); | |
989 | } | |
990 | ||
991 | static int usbhsf_dma_pop_done(struct usbhs_pkt *pkt, int *is_done) | |
992 | { | |
993 | struct usbhs_pipe *pipe = pkt->pipe; | |
994 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
995 | ||
996 | usbhsf_dma_stop(pipe, pipe->fifo); | |
997 | usbhsf_dma_unmap(pkt); | |
998 | usbhsf_fifo_unselect(pipe, pipe->fifo); | |
999 | ||
1000 | pkt->actual += pkt->trans; | |
1001 | ||
1002 | if ((pkt->actual == pkt->length) || /* receive all data */ | |
1003 | (pkt->trans < maxp)) { /* short packet */ | |
1004 | *is_done = 1; | |
58e47d43 | 1005 | usbhs_pipe_running(pipe, 0); |
e73a9891 KM |
1006 | } else { |
1007 | /* re-enable */ | |
58e47d43 | 1008 | usbhs_pipe_running(pipe, 0); |
e73a9891 KM |
1009 | usbhsf_prepare_pop(pkt, is_done); |
1010 | } | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler = { | |
1016 | .prepare = usbhsf_prepare_pop, | |
1017 | .try_run = usbhsf_dma_try_pop, | |
1018 | .dma_done = usbhsf_dma_pop_done | |
1019 | }; | |
1020 | ||
1021 | /* | |
1022 | * DMA setting | |
1023 | */ | |
1024 | static bool usbhsf_dma_filter(struct dma_chan *chan, void *param) | |
1025 | { | |
1026 | struct sh_dmae_slave *slave = param; | |
1027 | ||
1028 | /* | |
1029 | * FIXME | |
1030 | * | |
1031 | * usbhs doesn't recognize id = 0 as valid DMA | |
1032 | */ | |
f19b7e0d | 1033 | if (0 == slave->shdma_slave.slave_id) |
e73a9891 KM |
1034 | return false; |
1035 | ||
1036 | chan->private = slave; | |
1037 | ||
1038 | return true; | |
1039 | } | |
1040 | ||
1041 | static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo) | |
1042 | { | |
1043 | if (fifo->tx_chan) | |
1044 | dma_release_channel(fifo->tx_chan); | |
1045 | if (fifo->rx_chan) | |
1046 | dma_release_channel(fifo->rx_chan); | |
1047 | ||
1048 | fifo->tx_chan = NULL; | |
1049 | fifo->rx_chan = NULL; | |
1050 | } | |
1051 | ||
1052 | static void usbhsf_dma_init(struct usbhs_priv *priv, | |
1053 | struct usbhs_fifo *fifo) | |
1054 | { | |
1055 | struct device *dev = usbhs_priv_to_dev(priv); | |
1056 | dma_cap_mask_t mask; | |
1057 | ||
1058 | dma_cap_zero(mask); | |
1059 | dma_cap_set(DMA_SLAVE, mask); | |
1060 | fifo->tx_chan = dma_request_channel(mask, usbhsf_dma_filter, | |
1061 | &fifo->tx_slave); | |
1062 | ||
1063 | dma_cap_zero(mask); | |
1064 | dma_cap_set(DMA_SLAVE, mask); | |
1065 | fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter, | |
1066 | &fifo->rx_slave); | |
1067 | ||
1068 | if (fifo->tx_chan || fifo->rx_chan) | |
4ce68805 | 1069 | dev_dbg(dev, "enable DMAEngine (%s%s%s)\n", |
e73a9891 KM |
1070 | fifo->name, |
1071 | fifo->tx_chan ? "[TX]" : " ", | |
1072 | fifo->rx_chan ? "[RX]" : " "); | |
1073 | } | |
1074 | ||
dad67397 KM |
1075 | /* |
1076 | * irq functions | |
1077 | */ | |
1078 | static int usbhsf_irq_empty(struct usbhs_priv *priv, | |
1079 | struct usbhs_irq_state *irq_state) | |
1080 | { | |
1081 | struct usbhs_pipe *pipe; | |
dad67397 KM |
1082 | struct device *dev = usbhs_priv_to_dev(priv); |
1083 | int i, ret; | |
1084 | ||
1085 | if (!irq_state->bempsts) { | |
1086 | dev_err(dev, "debug %s !!\n", __func__); | |
1087 | return -EIO; | |
1088 | } | |
1089 | ||
1090 | dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts); | |
1091 | ||
1092 | /* | |
1093 | * search interrupted "pipe" | |
1094 | * not "uep". | |
1095 | */ | |
1096 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
1097 | if (!(irq_state->bempsts & (1 << i))) | |
1098 | continue; | |
1099 | ||
51b8a021 | 1100 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); |
dad67397 KM |
1101 | if (ret < 0) |
1102 | dev_err(dev, "irq_empty run_error %d : %d\n", i, ret); | |
1103 | } | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static int usbhsf_irq_ready(struct usbhs_priv *priv, | |
1109 | struct usbhs_irq_state *irq_state) | |
1110 | { | |
1111 | struct usbhs_pipe *pipe; | |
dad67397 KM |
1112 | struct device *dev = usbhs_priv_to_dev(priv); |
1113 | int i, ret; | |
1114 | ||
1115 | if (!irq_state->brdysts) { | |
1116 | dev_err(dev, "debug %s !!\n", __func__); | |
1117 | return -EIO; | |
1118 | } | |
1119 | ||
1120 | dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts); | |
1121 | ||
1122 | /* | |
1123 | * search interrupted "pipe" | |
1124 | * not "uep". | |
1125 | */ | |
1126 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
1127 | if (!(irq_state->brdysts & (1 << i))) | |
1128 | continue; | |
1129 | ||
51b8a021 | 1130 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); |
dad67397 KM |
1131 | if (ret < 0) |
1132 | dev_err(dev, "irq_ready run_error %d : %d\n", i, ret); | |
1133 | } | |
1134 | ||
1135 | return 0; | |
1136 | } | |
1137 | ||
e73a9891 KM |
1138 | static void usbhsf_dma_complete(void *arg) |
1139 | { | |
1140 | struct usbhs_pipe *pipe = arg; | |
1141 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
1142 | struct device *dev = usbhs_priv_to_dev(priv); | |
1143 | int ret; | |
1144 | ||
51b8a021 | 1145 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_DMA_DONE); |
e73a9891 KM |
1146 | if (ret < 0) |
1147 | dev_err(dev, "dma_complete run_error %d : %d\n", | |
1148 | usbhs_pipe_number(pipe), ret); | |
1149 | } | |
1150 | ||
dad67397 KM |
1151 | /* |
1152 | * fifo init | |
1153 | */ | |
1154 | void usbhs_fifo_init(struct usbhs_priv *priv) | |
1155 | { | |
1156 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
d77e3f4e | 1157 | struct usbhs_fifo *cfifo = usbhsf_get_cfifo(priv); |
e73a9891 KM |
1158 | struct usbhs_fifo *d0fifo = usbhsf_get_d0fifo(priv); |
1159 | struct usbhs_fifo *d1fifo = usbhsf_get_d1fifo(priv); | |
dad67397 KM |
1160 | |
1161 | mod->irq_empty = usbhsf_irq_empty; | |
1162 | mod->irq_ready = usbhsf_irq_ready; | |
1163 | mod->irq_bempsts = 0; | |
1164 | mod->irq_brdysts = 0; | |
d77e3f4e KM |
1165 | |
1166 | cfifo->pipe = NULL; | |
e73a9891 KM |
1167 | cfifo->tx_chan = NULL; |
1168 | cfifo->rx_chan = NULL; | |
1169 | ||
1170 | d0fifo->pipe = NULL; | |
1171 | d0fifo->tx_chan = NULL; | |
1172 | d0fifo->rx_chan = NULL; | |
1173 | ||
1174 | d1fifo->pipe = NULL; | |
1175 | d1fifo->tx_chan = NULL; | |
1176 | d1fifo->rx_chan = NULL; | |
1177 | ||
1178 | usbhsf_dma_init(priv, usbhsf_get_d0fifo(priv)); | |
1179 | usbhsf_dma_init(priv, usbhsf_get_d1fifo(priv)); | |
dad67397 KM |
1180 | } |
1181 | ||
1182 | void usbhs_fifo_quit(struct usbhs_priv *priv) | |
1183 | { | |
1184 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
1185 | ||
1186 | mod->irq_empty = NULL; | |
1187 | mod->irq_ready = NULL; | |
1188 | mod->irq_bempsts = 0; | |
1189 | mod->irq_brdysts = 0; | |
e73a9891 KM |
1190 | |
1191 | usbhsf_dma_quit(priv, usbhsf_get_d0fifo(priv)); | |
1192 | usbhsf_dma_quit(priv, usbhsf_get_d1fifo(priv)); | |
dad67397 | 1193 | } |
d3af90a5 KM |
1194 | |
1195 | int usbhs_fifo_probe(struct usbhs_priv *priv) | |
1196 | { | |
1197 | struct usbhs_fifo *fifo; | |
1198 | ||
1199 | /* CFIFO */ | |
1200 | fifo = usbhsf_get_cfifo(priv); | |
e73a9891 | 1201 | fifo->name = "CFIFO"; |
d3af90a5 KM |
1202 | fifo->port = CFIFO; |
1203 | fifo->sel = CFIFOSEL; | |
1204 | fifo->ctr = CFIFOCTR; | |
1205 | ||
e73a9891 KM |
1206 | /* D0FIFO */ |
1207 | fifo = usbhsf_get_d0fifo(priv); | |
1208 | fifo->name = "D0FIFO"; | |
1209 | fifo->port = D0FIFO; | |
1210 | fifo->sel = D0FIFOSEL; | |
1211 | fifo->ctr = D0FIFOCTR; | |
f19b7e0d GL |
1212 | fifo->tx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d0_tx_id); |
1213 | fifo->rx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d0_rx_id); | |
e73a9891 KM |
1214 | |
1215 | /* D1FIFO */ | |
1216 | fifo = usbhsf_get_d1fifo(priv); | |
1217 | fifo->name = "D1FIFO"; | |
1218 | fifo->port = D1FIFO; | |
1219 | fifo->sel = D1FIFOSEL; | |
1220 | fifo->ctr = D1FIFOCTR; | |
f19b7e0d GL |
1221 | fifo->tx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d1_tx_id); |
1222 | fifo->rx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d1_rx_id); | |
e73a9891 | 1223 | |
d3af90a5 KM |
1224 | return 0; |
1225 | } | |
1226 | ||
1227 | void usbhs_fifo_remove(struct usbhs_priv *priv) | |
1228 | { | |
1229 | } |