Commit | Line | Data |
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5fd54ace | 1 | // SPDX-License-Identifier: GPL-1.0+ |
e8d548d5 KM |
2 | /* |
3 | * Renesas USB driver | |
4 | * | |
5 | * Copyright (C) 2011 Renesas Solutions Corp. | |
31e795c6 | 6 | * Copyright (C) 2019 Renesas Electronics Corporation |
e8d548d5 | 7 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
e8d548d5 KM |
8 | */ |
9 | #include <linux/delay.h> | |
10 | #include <linux/io.h> | |
9c646cfc | 11 | #include <linux/scatterlist.h> |
cc502bb7 PB |
12 | #include "common.h" |
13 | #include "pipe.h" | |
e8d548d5 | 14 | |
d3af90a5 KM |
15 | #define usbhsf_get_cfifo(p) (&((p)->fifo_info.cfifo)) |
16 | ||
d77e3f4e KM |
17 | #define usbhsf_fifo_is_busy(f) ((f)->pipe) /* see usbhs_pipe_select_fifo */ |
18 | ||
4bd04811 | 19 | /* |
233f519d KM |
20 | * packet initialize |
21 | */ | |
22 | void usbhs_pkt_init(struct usbhs_pkt *pkt) | |
23 | { | |
233f519d KM |
24 | INIT_LIST_HEAD(&pkt->node); |
25 | } | |
26 | ||
27 | /* | |
28 | * packet control function | |
4bd04811 | 29 | */ |
97664a20 | 30 | static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done) |
dad67397 KM |
31 | { |
32 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); | |
33 | struct device *dev = usbhs_priv_to_dev(priv); | |
34 | ||
35 | dev_err(dev, "null handler\n"); | |
36 | ||
37 | return -EINVAL; | |
38 | } | |
39 | ||
fcb42e23 | 40 | static const struct usbhs_pkt_handle usbhsf_null_handler = { |
dad67397 KM |
41 | .prepare = usbhsf_null_handle, |
42 | .try_run = usbhsf_null_handle, | |
43 | }; | |
44 | ||
659d4954 | 45 | void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, |
b331872b KM |
46 | void (*done)(struct usbhs_priv *priv, |
47 | struct usbhs_pkt *pkt), | |
3edeee38 | 48 | void *buf, int len, int zero, int sequence) |
6acb95d4 | 49 | { |
dad67397 KM |
50 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
51 | struct device *dev = usbhs_priv_to_dev(priv); | |
97664a20 KM |
52 | unsigned long flags; |
53 | ||
b331872b KM |
54 | if (!done) { |
55 | dev_err(dev, "no done function\n"); | |
56 | return; | |
57 | } | |
58 | ||
a2c76b83 KM |
59 | /******************** spin lock ********************/ |
60 | usbhs_lock(priv, flags); | |
61 | ||
0c6ef985 | 62 | if (!pipe->handler) { |
dad67397 | 63 | dev_err(dev, "no handler function\n"); |
0c6ef985 | 64 | pipe->handler = &usbhsf_null_handler; |
dad67397 KM |
65 | } |
66 | ||
d5261286 | 67 | list_move_tail(&pkt->node, &pipe->list); |
6acb95d4 | 68 | |
0c6ef985 KM |
69 | /* |
70 | * each pkt must hold own handler. | |
71 | * because handler might be changed by its situation. | |
72 | * dma handler -> pio handler. | |
73 | */ | |
659d4954 KM |
74 | pkt->pipe = pipe; |
75 | pkt->buf = buf; | |
0c6ef985 | 76 | pkt->handler = pipe->handler; |
659d4954 KM |
77 | pkt->length = len; |
78 | pkt->zero = zero; | |
79 | pkt->actual = 0; | |
b331872b | 80 | pkt->done = done; |
3edeee38 | 81 | pkt->sequence = sequence; |
97664a20 KM |
82 | |
83 | usbhs_unlock(priv, flags); | |
84 | /******************** spin unlock ******************/ | |
6acb95d4 KM |
85 | } |
86 | ||
97664a20 | 87 | static void __usbhsf_pkt_del(struct usbhs_pkt *pkt) |
6acb95d4 KM |
88 | { |
89 | list_del_init(&pkt->node); | |
90 | } | |
91 | ||
4d599cd3 | 92 | struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe) |
6acb95d4 | 93 | { |
31faf878 | 94 | return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node); |
6acb95d4 KM |
95 | } |
96 | ||
2743e7f9 YS |
97 | static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, |
98 | struct usbhs_fifo *fifo); | |
99 | static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, | |
100 | struct usbhs_pkt *pkt); | |
101 | #define usbhsf_dma_map(p) __usbhsf_dma_map_ctrl(p, 1) | |
102 | #define usbhsf_dma_unmap(p) __usbhsf_dma_map_ctrl(p, 0) | |
103 | static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map); | |
97664a20 KM |
104 | struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt) |
105 | { | |
106 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
2743e7f9 | 107 | struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); |
97664a20 KM |
108 | unsigned long flags; |
109 | ||
110 | /******************** spin lock ********************/ | |
111 | usbhs_lock(priv, flags); | |
112 | ||
2743e7f9 YS |
113 | usbhs_pipe_disable(pipe); |
114 | ||
97664a20 KM |
115 | if (!pkt) |
116 | pkt = __usbhsf_pkt_get(pipe); | |
117 | ||
2743e7f9 YS |
118 | if (pkt) { |
119 | struct dma_chan *chan = NULL; | |
120 | ||
121 | if (fifo) | |
122 | chan = usbhsf_dma_chan_get(fifo, pkt); | |
123 | if (chan) { | |
124 | dmaengine_terminate_all(chan); | |
2743e7f9 YS |
125 | usbhsf_dma_unmap(pkt); |
126 | } | |
127 | ||
5785e87a | 128 | usbhs_pipe_clear_without_sequence(pipe, 0, 0); |
9917f0e3 | 129 | usbhs_pipe_running(pipe, 0); |
5785e87a | 130 | |
97664a20 | 131 | __usbhsf_pkt_del(pkt); |
2743e7f9 YS |
132 | } |
133 | ||
134 | if (fifo) | |
135 | usbhsf_fifo_unselect(pipe, fifo); | |
97664a20 KM |
136 | |
137 | usbhs_unlock(priv, flags); | |
138 | /******************** spin unlock ******************/ | |
139 | ||
140 | return pkt; | |
141 | } | |
142 | ||
51b8a021 KM |
143 | enum { |
144 | USBHSF_PKT_PREPARE, | |
145 | USBHSF_PKT_TRY_RUN, | |
146 | USBHSF_PKT_DMA_DONE, | |
147 | }; | |
148 | ||
149 | static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type) | |
97664a20 KM |
150 | { |
151 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
97664a20 KM |
152 | struct usbhs_pkt *pkt; |
153 | struct device *dev = usbhs_priv_to_dev(priv); | |
154 | int (*func)(struct usbhs_pkt *pkt, int *is_done); | |
155 | unsigned long flags; | |
156 | int ret = 0; | |
157 | int is_done = 0; | |
158 | ||
159 | /******************** spin lock ********************/ | |
160 | usbhs_lock(priv, flags); | |
161 | ||
162 | pkt = __usbhsf_pkt_get(pipe); | |
163 | if (!pkt) | |
164 | goto __usbhs_pkt_handler_end; | |
165 | ||
166 | switch (type) { | |
167 | case USBHSF_PKT_PREPARE: | |
168 | func = pkt->handler->prepare; | |
169 | break; | |
170 | case USBHSF_PKT_TRY_RUN: | |
171 | func = pkt->handler->try_run; | |
172 | break; | |
e73a9891 KM |
173 | case USBHSF_PKT_DMA_DONE: |
174 | func = pkt->handler->dma_done; | |
175 | break; | |
97664a20 | 176 | default: |
984e833c | 177 | dev_err(dev, "unknown pkt handler\n"); |
97664a20 KM |
178 | goto __usbhs_pkt_handler_end; |
179 | } | |
180 | ||
894f2fc4 YS |
181 | if (likely(func)) |
182 | ret = func(pkt, &is_done); | |
97664a20 KM |
183 | |
184 | if (is_done) | |
185 | __usbhsf_pkt_del(pkt); | |
186 | ||
187 | __usbhs_pkt_handler_end: | |
188 | usbhs_unlock(priv, flags); | |
189 | /******************** spin unlock ******************/ | |
190 | ||
0432eed0 | 191 | if (is_done) { |
b331872b | 192 | pkt->done(priv, pkt); |
0432eed0 KM |
193 | usbhs_pkt_start(pipe); |
194 | } | |
97664a20 KM |
195 | |
196 | return ret; | |
197 | } | |
198 | ||
51b8a021 KM |
199 | void usbhs_pkt_start(struct usbhs_pipe *pipe) |
200 | { | |
201 | usbhsf_pkt_handler(pipe, USBHSF_PKT_PREPARE); | |
202 | } | |
203 | ||
659d4954 KM |
204 | /* |
205 | * irq enable/disable function | |
206 | */ | |
3192fcb2 KM |
207 | #define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_bempsts, e) |
208 | #define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_brdysts, e) | |
659d4954 KM |
209 | #define usbhsf_irq_callback_ctrl(pipe, status, enable) \ |
210 | ({ \ | |
211 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \ | |
212 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); \ | |
213 | u16 status = (1 << usbhs_pipe_number(pipe)); \ | |
214 | if (!mod) \ | |
215 | return; \ | |
216 | if (enable) \ | |
3192fcb2 | 217 | mod->status |= status; \ |
659d4954 | 218 | else \ |
3192fcb2 | 219 | mod->status &= ~status; \ |
659d4954 KM |
220 | usbhs_irq_callback_update(priv, mod); \ |
221 | }) | |
222 | ||
223 | static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable) | |
224 | { | |
225 | /* | |
226 | * And DCP pipe can NOT use "ready interrupt" for "send" | |
227 | * it should use "empty" interrupt. | |
228 | * see | |
229 | * "Operation" - "Interrupt Function" - "BRDY Interrupt" | |
230 | * | |
231 | * on the other hand, normal pipe can use "ready interrupt" for "send" | |
232 | * even though it is single/double buffer | |
233 | */ | |
234 | if (usbhs_pipe_is_dcp(pipe)) | |
235 | usbhsf_irq_empty_ctrl(pipe, enable); | |
236 | else | |
237 | usbhsf_irq_ready_ctrl(pipe, enable); | |
238 | } | |
239 | ||
240 | static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable) | |
241 | { | |
242 | usbhsf_irq_ready_ctrl(pipe, enable); | |
243 | } | |
244 | ||
e8d548d5 KM |
245 | /* |
246 | * FIFO ctrl | |
247 | */ | |
d3af90a5 KM |
248 | static void usbhsf_send_terminator(struct usbhs_pipe *pipe, |
249 | struct usbhs_fifo *fifo) | |
e8d548d5 KM |
250 | { |
251 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
252 | ||
d3af90a5 | 253 | usbhs_bset(priv, fifo->ctr, BVAL, BVAL); |
e8d548d5 KM |
254 | } |
255 | ||
d3af90a5 KM |
256 | static int usbhsf_fifo_barrier(struct usbhs_priv *priv, |
257 | struct usbhs_fifo *fifo) | |
e8d548d5 | 258 | { |
469e2978 YS |
259 | /* The FIFO port is accessible */ |
260 | if (usbhs_read(priv, fifo->ctr) & FRDY) | |
261 | return 0; | |
e8d548d5 KM |
262 | |
263 | return -EBUSY; | |
264 | } | |
265 | ||
d3af90a5 KM |
266 | static void usbhsf_fifo_clear(struct usbhs_pipe *pipe, |
267 | struct usbhs_fifo *fifo) | |
e8d548d5 KM |
268 | { |
269 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
6124607a | 270 | int ret = 0; |
e8d548d5 | 271 | |
0a2ce62b YS |
272 | if (!usbhs_pipe_is_dcp(pipe)) { |
273 | /* | |
274 | * This driver checks the pipe condition first to avoid -EBUSY | |
469e2978 YS |
275 | * from usbhsf_fifo_barrier() if the pipe is RX direction and |
276 | * empty. | |
0a2ce62b YS |
277 | */ |
278 | if (usbhs_pipe_is_dir_in(pipe)) | |
279 | ret = usbhs_pipe_is_accessible(pipe); | |
280 | if (!ret) | |
281 | ret = usbhsf_fifo_barrier(priv, fifo); | |
282 | } | |
e8d548d5 | 283 | |
6124607a YS |
284 | /* |
285 | * if non-DCP pipe, this driver should set BCLR when | |
286 | * usbhsf_fifo_barrier() returns 0. | |
287 | */ | |
288 | if (!ret) | |
289 | usbhs_write(priv, fifo->ctr, BCLR); | |
e8d548d5 KM |
290 | } |
291 | ||
d3af90a5 KM |
292 | static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv, |
293 | struct usbhs_fifo *fifo) | |
e8d548d5 | 294 | { |
d3af90a5 | 295 | return usbhs_read(priv, fifo->ctr) & DTLN_MASK; |
e8d548d5 KM |
296 | } |
297 | ||
d77e3f4e KM |
298 | static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, |
299 | struct usbhs_fifo *fifo) | |
300 | { | |
301 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
302 | ||
303 | usbhs_pipe_select_fifo(pipe, NULL); | |
304 | usbhs_write(priv, fifo->sel, 0); | |
305 | } | |
306 | ||
d3af90a5 KM |
307 | static int usbhsf_fifo_select(struct usbhs_pipe *pipe, |
308 | struct usbhs_fifo *fifo, | |
309 | int write) | |
e8d548d5 KM |
310 | { |
311 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
312 | struct device *dev = usbhs_priv_to_dev(priv); | |
313 | int timeout = 1024; | |
314 | u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */ | |
315 | u16 base = usbhs_pipe_number(pipe); /* CURPIPE */ | |
316 | ||
d77e3f4e KM |
317 | if (usbhs_pipe_is_busy(pipe) || |
318 | usbhsf_fifo_is_busy(fifo)) | |
319 | return -EBUSY; | |
320 | ||
92352071 | 321 | if (usbhs_pipe_is_dcp(pipe)) { |
e8d548d5 KM |
322 | base |= (1 == write) << 5; /* ISEL */ |
323 | ||
92352071 KM |
324 | if (usbhs_mod_is_host(priv)) |
325 | usbhs_dcp_dir_for_host(pipe, write); | |
326 | } | |
327 | ||
e8d548d5 | 328 | /* "base" will be used below */ |
32a6cfdf | 329 | usbhs_write(priv, fifo->sel, base | MBW_32); |
e8d548d5 KM |
330 | |
331 | /* check ISEL and CURPIPE value */ | |
332 | while (timeout--) { | |
d77e3f4e KM |
333 | if (base == (mask & usbhs_read(priv, fifo->sel))) { |
334 | usbhs_pipe_select_fifo(pipe, fifo); | |
e8d548d5 | 335 | return 0; |
d77e3f4e | 336 | } |
e8d548d5 KM |
337 | udelay(10); |
338 | } | |
339 | ||
340 | dev_err(dev, "fifo select error\n"); | |
341 | ||
342 | return -EIO; | |
343 | } | |
344 | ||
9e74d601 KM |
345 | /* |
346 | * DCP status stage | |
347 | */ | |
348 | static int usbhs_dcp_dir_switch_to_write(struct usbhs_pkt *pkt, int *is_done) | |
349 | { | |
350 | struct usbhs_pipe *pipe = pkt->pipe; | |
351 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
352 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ | |
353 | struct device *dev = usbhs_priv_to_dev(priv); | |
354 | int ret; | |
355 | ||
356 | usbhs_pipe_disable(pipe); | |
357 | ||
358 | ret = usbhsf_fifo_select(pipe, fifo, 1); | |
359 | if (ret < 0) { | |
360 | dev_err(dev, "%s() faile\n", __func__); | |
361 | return ret; | |
362 | } | |
363 | ||
364 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
365 | ||
366 | usbhsf_fifo_clear(pipe, fifo); | |
367 | usbhsf_send_terminator(pipe, fifo); | |
368 | ||
369 | usbhsf_fifo_unselect(pipe, fifo); | |
370 | ||
371 | usbhsf_tx_irq_ctrl(pipe, 1); | |
372 | usbhs_pipe_enable(pipe); | |
373 | ||
374 | return ret; | |
375 | } | |
376 | ||
377 | static int usbhs_dcp_dir_switch_to_read(struct usbhs_pkt *pkt, int *is_done) | |
378 | { | |
379 | struct usbhs_pipe *pipe = pkt->pipe; | |
380 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
381 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ | |
382 | struct device *dev = usbhs_priv_to_dev(priv); | |
383 | int ret; | |
384 | ||
385 | usbhs_pipe_disable(pipe); | |
386 | ||
387 | ret = usbhsf_fifo_select(pipe, fifo, 0); | |
388 | if (ret < 0) { | |
389 | dev_err(dev, "%s() fail\n", __func__); | |
390 | return ret; | |
391 | } | |
392 | ||
393 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
394 | usbhsf_fifo_clear(pipe, fifo); | |
395 | ||
396 | usbhsf_fifo_unselect(pipe, fifo); | |
397 | ||
398 | usbhsf_rx_irq_ctrl(pipe, 1); | |
399 | usbhs_pipe_enable(pipe); | |
400 | ||
401 | return ret; | |
402 | ||
403 | } | |
404 | ||
405 | static int usbhs_dcp_dir_switch_done(struct usbhs_pkt *pkt, int *is_done) | |
406 | { | |
407 | struct usbhs_pipe *pipe = pkt->pipe; | |
408 | ||
409 | if (pkt->handler == &usbhs_dcp_status_stage_in_handler) | |
410 | usbhsf_tx_irq_ctrl(pipe, 0); | |
411 | else | |
412 | usbhsf_rx_irq_ctrl(pipe, 0); | |
413 | ||
414 | pkt->actual = pkt->length; | |
415 | *is_done = 1; | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
fcb42e23 | 420 | const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler = { |
9e74d601 KM |
421 | .prepare = usbhs_dcp_dir_switch_to_write, |
422 | .try_run = usbhs_dcp_dir_switch_done, | |
423 | }; | |
424 | ||
fcb42e23 | 425 | const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler = { |
9e74d601 KM |
426 | .prepare = usbhs_dcp_dir_switch_to_read, |
427 | .try_run = usbhs_dcp_dir_switch_done, | |
428 | }; | |
429 | ||
430 | /* | |
431 | * DCP data stage (push) | |
432 | */ | |
433 | static int usbhsf_dcp_data_stage_try_push(struct usbhs_pkt *pkt, int *is_done) | |
434 | { | |
435 | struct usbhs_pipe *pipe = pkt->pipe; | |
436 | ||
437 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
438 | ||
439 | /* | |
440 | * change handler to PIO push | |
441 | */ | |
442 | pkt->handler = &usbhs_fifo_pio_push_handler; | |
443 | ||
444 | return pkt->handler->prepare(pkt, is_done); | |
445 | } | |
446 | ||
fcb42e23 | 447 | const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler = { |
9e74d601 KM |
448 | .prepare = usbhsf_dcp_data_stage_try_push, |
449 | }; | |
450 | ||
451 | /* | |
452 | * DCP data stage (pop) | |
453 | */ | |
454 | static int usbhsf_dcp_data_stage_prepare_pop(struct usbhs_pkt *pkt, | |
455 | int *is_done) | |
456 | { | |
457 | struct usbhs_pipe *pipe = pkt->pipe; | |
458 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
459 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); | |
460 | ||
461 | if (usbhs_pipe_is_busy(pipe)) | |
462 | return 0; | |
463 | ||
464 | /* | |
465 | * prepare pop for DCP should | |
466 | * - change DCP direction, | |
467 | * - clear fifo | |
468 | * - DATA1 | |
469 | */ | |
470 | usbhs_pipe_disable(pipe); | |
471 | ||
472 | usbhs_pipe_sequence_data1(pipe); /* DATA1 */ | |
473 | ||
474 | usbhsf_fifo_select(pipe, fifo, 0); | |
475 | usbhsf_fifo_clear(pipe, fifo); | |
476 | usbhsf_fifo_unselect(pipe, fifo); | |
477 | ||
478 | /* | |
479 | * change handler to PIO pop | |
480 | */ | |
481 | pkt->handler = &usbhs_fifo_pio_pop_handler; | |
482 | ||
483 | return pkt->handler->prepare(pkt, is_done); | |
484 | } | |
485 | ||
fcb42e23 | 486 | const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler = { |
9e74d601 KM |
487 | .prepare = usbhsf_dcp_data_stage_prepare_pop, |
488 | }; | |
489 | ||
e8d548d5 | 490 | /* |
233f519d | 491 | * PIO push handler |
e8d548d5 | 492 | */ |
0cb7e61d | 493 | static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done) |
e8d548d5 | 494 | { |
4bd04811 | 495 | struct usbhs_pipe *pipe = pkt->pipe; |
e8d548d5 | 496 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
659d4954 | 497 | struct device *dev = usbhs_priv_to_dev(priv); |
d3af90a5 KM |
498 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ |
499 | void __iomem *addr = priv->base + fifo->port; | |
659d4954 | 500 | u8 *buf; |
e8d548d5 KM |
501 | int maxp = usbhs_pipe_get_maxpacket(pipe); |
502 | int total_len; | |
4bd04811 | 503 | int i, ret, len; |
97664a20 | 504 | int is_short; |
e8d548d5 | 505 | |
3edeee38 KM |
506 | usbhs_pipe_data_sequence(pipe, pkt->sequence); |
507 | pkt->sequence = -1; /* -1 sequence will be ignored */ | |
508 | ||
1c90ee0b KM |
509 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); |
510 | ||
d3af90a5 | 511 | ret = usbhsf_fifo_select(pipe, fifo, 1); |
e8d548d5 | 512 | if (ret < 0) |
d77e3f4e | 513 | return 0; |
e8d548d5 | 514 | |
dad67397 | 515 | ret = usbhs_pipe_is_accessible(pipe); |
4ef85e0f KM |
516 | if (ret < 0) { |
517 | /* inaccessible pipe is not an error */ | |
518 | ret = 0; | |
659d4954 | 519 | goto usbhs_fifo_write_busy; |
4ef85e0f | 520 | } |
e8d548d5 | 521 | |
d3af90a5 | 522 | ret = usbhsf_fifo_barrier(priv, fifo); |
e8d548d5 | 523 | if (ret < 0) |
659d4954 | 524 | goto usbhs_fifo_write_busy; |
e8d548d5 | 525 | |
659d4954 KM |
526 | buf = pkt->buf + pkt->actual; |
527 | len = pkt->length - pkt->actual; | |
528 | len = min(len, maxp); | |
529 | total_len = len; | |
530 | is_short = total_len < maxp; | |
e8d548d5 KM |
531 | |
532 | /* | |
533 | * FIXME | |
534 | * | |
535 | * 32-bit access only | |
536 | */ | |
659d4954 | 537 | if (len >= 4 && !((unsigned long)buf & 0x03)) { |
e8d548d5 KM |
538 | iowrite32_rep(addr, buf, len / 4); |
539 | len %= 4; | |
540 | buf += total_len - len; | |
541 | } | |
542 | ||
543 | /* the rest operation */ | |
f7560669 CB |
544 | if (usbhs_get_dparam(priv, cfifo_byte_addr)) { |
545 | for (i = 0; i < len; i++) | |
546 | iowrite8(buf[i], addr + (i & 0x03)); | |
547 | } else { | |
548 | for (i = 0; i < len; i++) | |
549 | iowrite8(buf[i], addr + (0x03 - (i & 0x03))); | |
550 | } | |
e8d548d5 | 551 | |
659d4954 KM |
552 | /* |
553 | * variable update | |
554 | */ | |
555 | pkt->actual += total_len; | |
556 | ||
557 | if (pkt->actual < pkt->length) | |
97664a20 | 558 | *is_done = 0; /* there are remainder data */ |
659d4954 | 559 | else if (is_short) |
97664a20 | 560 | *is_done = 1; /* short packet */ |
659d4954 | 561 | else |
97664a20 | 562 | *is_done = !pkt->zero; /* send zero packet ? */ |
659d4954 KM |
563 | |
564 | /* | |
565 | * pipe/irq handling | |
566 | */ | |
567 | if (is_short) | |
d3af90a5 | 568 | usbhsf_send_terminator(pipe, fifo); |
e8d548d5 | 569 | |
97664a20 | 570 | usbhsf_tx_irq_ctrl(pipe, !*is_done); |
8355b2b3 | 571 | usbhs_pipe_running(pipe, !*is_done); |
4bd04811 KM |
572 | usbhs_pipe_enable(pipe); |
573 | ||
659d4954 KM |
574 | dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n", |
575 | usbhs_pipe_number(pipe), | |
97664a20 | 576 | pkt->length, pkt->actual, *is_done, pkt->zero); |
659d4954 | 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); | |
8355b2b3 | 590 | usbhs_pipe_running(pipe, 1); |
659d4954 KM |
591 | |
592 | return ret; | |
e8d548d5 KM |
593 | } |
594 | ||
8355b2b3 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 | ||
fcb42e23 | 603 | const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = { |
8355b2b3 | 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; |
e73d42f1 KM |
614 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
615 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); | |
d77e3f4e KM |
616 | |
617 | if (usbhs_pipe_is_busy(pipe)) | |
618 | return 0; | |
e8d548d5 | 619 | |
8355b2b3 YS |
620 | if (usbhs_pipe_is_running(pipe)) |
621 | return 0; | |
622 | ||
e8d548d5 | 623 | /* |
d77e3f4e | 624 | * pipe enable to prepare packet receive |
e8d548d5 | 625 | */ |
3edeee38 KM |
626 | usbhs_pipe_data_sequence(pipe, pkt->sequence); |
627 | pkt->sequence = -1; /* -1 sequence will be ignored */ | |
e8d548d5 | 628 | |
e73d42f1 KM |
629 | if (usbhs_pipe_is_dcp(pipe)) |
630 | usbhsf_fifo_clear(pipe, fifo); | |
631 | ||
1c90ee0b | 632 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); |
e8d548d5 | 633 | usbhs_pipe_enable(pipe); |
8355b2b3 | 634 | usbhs_pipe_running(pipe, 1); |
659d4954 | 635 | usbhsf_rx_irq_ctrl(pipe, 1); |
e8d548d5 | 636 | |
d3af90a5 | 637 | return 0; |
e8d548d5 KM |
638 | } |
639 | ||
0cb7e61d | 640 | static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done) |
e8d548d5 | 641 | { |
4bd04811 | 642 | struct usbhs_pipe *pipe = pkt->pipe; |
e8d548d5 | 643 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
659d4954 | 644 | struct device *dev = usbhs_priv_to_dev(priv); |
d3af90a5 KM |
645 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ |
646 | void __iomem *addr = priv->base + fifo->port; | |
659d4954 KM |
647 | u8 *buf; |
648 | u32 data = 0; | |
649 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
4bd04811 | 650 | int rcv_len, len; |
e8d548d5 | 651 | int i, ret; |
4bd04811 | 652 | int total_len = 0; |
e8d548d5 | 653 | |
d3af90a5 | 654 | ret = usbhsf_fifo_select(pipe, fifo, 0); |
e8d548d5 | 655 | if (ret < 0) |
d77e3f4e | 656 | return 0; |
e8d548d5 | 657 | |
d3af90a5 | 658 | ret = usbhsf_fifo_barrier(priv, fifo); |
e8d548d5 | 659 | if (ret < 0) |
d77e3f4e | 660 | goto usbhs_fifo_read_busy; |
e8d548d5 | 661 | |
d3af90a5 | 662 | rcv_len = usbhsf_fifo_rcv_len(priv, fifo); |
e8d548d5 | 663 | |
659d4954 KM |
664 | buf = pkt->buf + pkt->actual; |
665 | len = pkt->length - pkt->actual; | |
666 | len = min(len, rcv_len); | |
667 | total_len = len; | |
668 | ||
6ff5d09b KM |
669 | /* |
670 | * update actual length first here to decide disable pipe. | |
671 | * if this pipe keeps BUF status and all data were popped, | |
672 | * then, next interrupt/token will be issued again | |
673 | */ | |
674 | pkt->actual += total_len; | |
675 | ||
676 | if ((pkt->actual == pkt->length) || /* receive all data */ | |
677 | (total_len < maxp)) { /* short packet */ | |
678 | *is_done = 1; | |
679 | usbhsf_rx_irq_ctrl(pipe, 0); | |
8355b2b3 | 680 | usbhs_pipe_running(pipe, 0); |
93fb9127 YS |
681 | /* |
682 | * If function mode, since this controller is possible to enter | |
683 | * Control Write status stage at this timing, this driver | |
684 | * should not disable the pipe. If such a case happens, this | |
685 | * controller is not able to complete the status stage. | |
686 | */ | |
687 | if (!usbhs_mod_is_host(priv) && !usbhs_pipe_is_dcp(pipe)) | |
688 | usbhs_pipe_disable(pipe); /* disable pipe first */ | |
6ff5d09b KM |
689 | } |
690 | ||
e8d548d5 KM |
691 | /* |
692 | * Buffer clear if Zero-Length packet | |
693 | * | |
694 | * see | |
695 | * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function" | |
696 | */ | |
697 | if (0 == rcv_len) { | |
3edeee38 | 698 | pkt->zero = 1; |
d3af90a5 | 699 | usbhsf_fifo_clear(pipe, fifo); |
4bd04811 | 700 | goto usbhs_fifo_read_end; |
e8d548d5 KM |
701 | } |
702 | ||
e8d548d5 KM |
703 | /* |
704 | * FIXME | |
705 | * | |
706 | * 32-bit access only | |
707 | */ | |
659d4954 | 708 | if (len >= 4 && !((unsigned long)buf & 0x03)) { |
e8d548d5 KM |
709 | ioread32_rep(addr, buf, len / 4); |
710 | len %= 4; | |
659d4954 | 711 | buf += total_len - len; |
e8d548d5 KM |
712 | } |
713 | ||
714 | /* the rest operation */ | |
715 | for (i = 0; i < len; i++) { | |
716 | if (!(i & 0x03)) | |
717 | data = ioread32(addr); | |
718 | ||
719 | buf[i] = (data >> ((i & 0x03) * 8)) & 0xff; | |
720 | } | |
721 | ||
4bd04811 | 722 | usbhs_fifo_read_end: |
97664a20 KM |
723 | dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n", |
724 | usbhs_pipe_number(pipe), | |
725 | pkt->length, pkt->actual, *is_done, pkt->zero); | |
726 | ||
d77e3f4e KM |
727 | usbhs_fifo_read_busy: |
728 | usbhsf_fifo_unselect(pipe, fifo); | |
729 | ||
730 | return ret; | |
e8d548d5 | 731 | } |
dad67397 | 732 | |
fcb42e23 | 733 | const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler = { |
dad67397 | 734 | .prepare = usbhsf_prepare_pop, |
0cb7e61d | 735 | .try_run = usbhsf_pio_try_pop, |
dad67397 KM |
736 | }; |
737 | ||
738 | /* | |
233f519d | 739 | * DCP ctrol statge handler |
dad67397 | 740 | */ |
97664a20 | 741 | static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt, int *is_done) |
dad67397 | 742 | { |
97664a20 | 743 | usbhs_dcp_control_transfer_done(pkt->pipe); |
dad67397 | 744 | |
97664a20 | 745 | *is_done = 1; |
dad67397 KM |
746 | |
747 | return 0; | |
748 | } | |
749 | ||
fcb42e23 | 750 | const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = { |
dad67397 KM |
751 | .prepare = usbhsf_ctrl_stage_end, |
752 | .try_run = usbhsf_ctrl_stage_end, | |
753 | }; | |
754 | ||
e73a9891 KM |
755 | /* |
756 | * DMA fifo functions | |
757 | */ | |
758 | static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, | |
759 | struct usbhs_pkt *pkt) | |
760 | { | |
761 | if (&usbhs_fifo_dma_push_handler == pkt->handler) | |
762 | return fifo->tx_chan; | |
763 | ||
764 | if (&usbhs_fifo_dma_pop_handler == pkt->handler) | |
765 | return fifo->rx_chan; | |
766 | ||
767 | return NULL; | |
768 | } | |
769 | ||
770 | static struct usbhs_fifo *usbhsf_get_dma_fifo(struct usbhs_priv *priv, | |
771 | struct usbhs_pkt *pkt) | |
772 | { | |
773 | struct usbhs_fifo *fifo; | |
3a2634a5 | 774 | int i; |
e73a9891 | 775 | |
3a2634a5 YS |
776 | usbhs_for_each_dfifo(priv, fifo, i) { |
777 | if (usbhsf_dma_chan_get(fifo, pkt) && | |
778 | !usbhsf_fifo_is_busy(fifo)) | |
779 | return fifo; | |
780 | } | |
e73a9891 KM |
781 | |
782 | return NULL; | |
783 | } | |
784 | ||
785 | #define usbhsf_dma_start(p, f) __usbhsf_dma_ctrl(p, f, DREQE) | |
786 | #define usbhsf_dma_stop(p, f) __usbhsf_dma_ctrl(p, f, 0) | |
787 | static void __usbhsf_dma_ctrl(struct usbhs_pipe *pipe, | |
788 | struct usbhs_fifo *fifo, | |
789 | u16 dreqe) | |
790 | { | |
791 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
792 | ||
793 | usbhs_bset(priv, fifo->sel, DREQE, dreqe); | |
794 | } | |
795 | ||
e73a9891 KM |
796 | static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map) |
797 | { | |
798 | struct usbhs_pipe *pipe = pkt->pipe; | |
799 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
800 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); | |
c3cdcac7 YS |
801 | struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); |
802 | struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt); | |
e73a9891 | 803 | |
c3cdcac7 | 804 | return info->dma_map_ctrl(chan->device->dev, pkt, map); |
e73a9891 KM |
805 | } |
806 | ||
ea0efd68 YS |
807 | static void usbhsf_dma_complete(void *arg, |
808 | const struct dmaengine_result *result); | |
b2357839 | 809 | static void usbhsf_dma_xfer_preparing(struct usbhs_pkt *pkt) |
e73a9891 | 810 | { |
e73a9891 | 811 | struct usbhs_pipe *pipe = pkt->pipe; |
4fdef698 | 812 | struct usbhs_fifo *fifo; |
e73a9891 | 813 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
e73a9891 | 814 | struct dma_async_tx_descriptor *desc; |
4fdef698 | 815 | struct dma_chan *chan; |
e73a9891 | 816 | struct device *dev = usbhs_priv_to_dev(priv); |
55ba4e5e | 817 | enum dma_transfer_direction dir; |
ea0efd68 | 818 | dma_cookie_t cookie; |
4fdef698 | 819 | |
4fdef698 YS |
820 | fifo = usbhs_pipe_to_fifo(pipe); |
821 | if (!fifo) | |
b2357839 | 822 | return; |
e73a9891 | 823 | |
4fdef698 | 824 | chan = usbhsf_dma_chan_get(fifo, pkt); |
55ba4e5e | 825 | dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV; |
e73a9891 | 826 | |
2f0de9d8 KM |
827 | desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual, |
828 | pkt->trans, dir, | |
16052827 | 829 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
e73a9891 | 830 | if (!desc) |
b2357839 | 831 | return; |
e73a9891 | 832 | |
ea0efd68 YS |
833 | desc->callback_result = usbhsf_dma_complete; |
834 | desc->callback_param = pkt; | |
e73a9891 | 835 | |
ea0efd68 YS |
836 | cookie = dmaengine_submit(desc); |
837 | if (cookie < 0) { | |
e73a9891 | 838 | dev_err(dev, "Failed to submit dma descriptor\n"); |
b2357839 | 839 | return; |
e73a9891 KM |
840 | } |
841 | ||
842 | dev_dbg(dev, " %s %d (%d/ %d)\n", | |
843 | fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero); | |
844 | ||
8355b2b3 | 845 | usbhs_pipe_running(pipe, 1); |
9b53d9af | 846 | usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans); |
e73a9891 | 847 | dma_async_issue_pending(chan); |
29c7f3e6 | 848 | usbhsf_dma_start(pipe, fifo); |
9b53d9af | 849 | usbhs_pipe_enable(pipe); |
b2357839 YS |
850 | } |
851 | ||
852 | static void xfer_work(struct work_struct *work) | |
853 | { | |
854 | struct usbhs_pkt *pkt = container_of(work, struct usbhs_pkt, work); | |
855 | struct usbhs_pipe *pipe = pkt->pipe; | |
856 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
857 | unsigned long flags; | |
4fdef698 | 858 | |
b2357839 YS |
859 | usbhs_lock(priv, flags); |
860 | usbhsf_dma_xfer_preparing(pkt); | |
4fdef698 | 861 | usbhs_unlock(priv, flags); |
e73a9891 KM |
862 | } |
863 | ||
233f519d KM |
864 | /* |
865 | * DMA push handler | |
866 | */ | |
e73a9891 KM |
867 | static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) |
868 | { | |
869 | struct usbhs_pipe *pipe = pkt->pipe; | |
870 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
871 | struct usbhs_fifo *fifo; | |
872 | int len = pkt->length - pkt->actual; | |
873 | int ret; | |
ab330cf3 | 874 | uintptr_t align_mask; |
e73a9891 KM |
875 | |
876 | if (usbhs_pipe_is_busy(pipe)) | |
877 | return 0; | |
878 | ||
879 | /* use PIO if packet is less than pio_dma_border or pipe is DCP */ | |
880 | if ((len < usbhs_get_dparam(priv, pio_dma_border)) || | |
700aa7ff | 881 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) |
e73a9891 KM |
882 | goto usbhsf_pio_prepare_push; |
883 | ||
ab330cf3 YS |
884 | /* check data length if this driver don't use USB-DMAC */ |
885 | if (!usbhs_get_dparam(priv, has_usb_dmac) && len & 0x7) | |
e73a9891 KM |
886 | goto usbhsf_pio_prepare_push; |
887 | ||
ab330cf3 YS |
888 | /* check buffer alignment */ |
889 | align_mask = usbhs_get_dparam(priv, has_usb_dmac) ? | |
890 | USBHS_USB_DMAC_XFER_SIZE - 1 : 0x7; | |
891 | if ((uintptr_t)(pkt->buf + pkt->actual) & align_mask) | |
9a12d097 KM |
892 | goto usbhsf_pio_prepare_push; |
893 | ||
8355b2b3 YS |
894 | /* return at this time if the pipe is running */ |
895 | if (usbhs_pipe_is_running(pipe)) | |
896 | return 0; | |
897 | ||
e73a9891 KM |
898 | /* get enable DMA fifo */ |
899 | fifo = usbhsf_get_dma_fifo(priv, pkt); | |
900 | if (!fifo) | |
901 | goto usbhsf_pio_prepare_push; | |
902 | ||
e73a9891 KM |
903 | ret = usbhsf_fifo_select(pipe, fifo, 0); |
904 | if (ret < 0) | |
e789ece1 YS |
905 | goto usbhsf_pio_prepare_push; |
906 | ||
907 | if (usbhsf_dma_map(pkt) < 0) | |
908 | goto usbhsf_pio_prepare_push_unselect; | |
e73a9891 KM |
909 | |
910 | pkt->trans = len; | |
911 | ||
6490865c | 912 | usbhsf_tx_irq_ctrl(pipe, 0); |
b2357839 YS |
913 | /* FIXME: Workaound for usb dmac that driver can be used in atomic */ |
914 | if (usbhs_get_dparam(priv, has_usb_dmac)) { | |
915 | usbhsf_dma_xfer_preparing(pkt); | |
916 | } else { | |
917 | INIT_WORK(&pkt->work, xfer_work); | |
918 | schedule_work(&pkt->work); | |
919 | } | |
e73a9891 KM |
920 | |
921 | return 0; | |
922 | ||
e789ece1 YS |
923 | usbhsf_pio_prepare_push_unselect: |
924 | usbhsf_fifo_unselect(pipe, fifo); | |
e73a9891 KM |
925 | usbhsf_pio_prepare_push: |
926 | /* | |
927 | * change handler to PIO | |
928 | */ | |
929 | pkt->handler = &usbhs_fifo_pio_push_handler; | |
930 | ||
931 | return pkt->handler->prepare(pkt, is_done); | |
932 | } | |
933 | ||
934 | static int usbhsf_dma_push_done(struct usbhs_pkt *pkt, int *is_done) | |
935 | { | |
936 | struct usbhs_pipe *pipe = pkt->pipe; | |
c0ed8b23 | 937 | int is_short = pkt->trans % usbhs_pipe_get_maxpacket(pipe); |
e73a9891 | 938 | |
c0ed8b23 YS |
939 | pkt->actual += pkt->trans; |
940 | ||
941 | if (pkt->actual < pkt->length) | |
942 | *is_done = 0; /* there are remainder data */ | |
943 | else if (is_short) | |
944 | *is_done = 1; /* short packet */ | |
945 | else | |
946 | *is_done = !pkt->zero; /* send zero packet? */ | |
e73a9891 | 947 | |
8355b2b3 | 948 | usbhs_pipe_running(pipe, !*is_done); |
e73a9891 KM |
949 | |
950 | usbhsf_dma_stop(pipe, pipe->fifo); | |
951 | usbhsf_dma_unmap(pkt); | |
952 | usbhsf_fifo_unselect(pipe, pipe->fifo); | |
953 | ||
c0ed8b23 YS |
954 | if (!*is_done) { |
955 | /* change handler to PIO */ | |
956 | pkt->handler = &usbhs_fifo_pio_push_handler; | |
957 | return pkt->handler->try_run(pkt, is_done); | |
958 | } | |
959 | ||
e73a9891 KM |
960 | return 0; |
961 | } | |
962 | ||
fcb42e23 | 963 | const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler = { |
e73a9891 KM |
964 | .prepare = usbhsf_dma_prepare_push, |
965 | .dma_done = usbhsf_dma_push_done, | |
966 | }; | |
967 | ||
233f519d KM |
968 | /* |
969 | * DMA pop handler | |
970 | */ | |
ab330cf3 YS |
971 | |
972 | static int usbhsf_dma_prepare_pop_with_rx_irq(struct usbhs_pkt *pkt, | |
973 | int *is_done) | |
974 | { | |
975 | return usbhsf_prepare_pop(pkt, is_done); | |
976 | } | |
977 | ||
978 | static int usbhsf_dma_prepare_pop_with_usb_dmac(struct usbhs_pkt *pkt, | |
979 | int *is_done) | |
980 | { | |
981 | struct usbhs_pipe *pipe = pkt->pipe; | |
982 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
983 | struct usbhs_fifo *fifo; | |
984 | int ret; | |
985 | ||
986 | if (usbhs_pipe_is_busy(pipe)) | |
987 | return 0; | |
988 | ||
989 | /* use PIO if packet is less than pio_dma_border or pipe is DCP */ | |
990 | if ((pkt->length < usbhs_get_dparam(priv, pio_dma_border)) || | |
700aa7ff | 991 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) |
ab330cf3 YS |
992 | goto usbhsf_pio_prepare_pop; |
993 | ||
994 | fifo = usbhsf_get_dma_fifo(priv, pkt); | |
995 | if (!fifo) | |
996 | goto usbhsf_pio_prepare_pop; | |
997 | ||
998 | if ((uintptr_t)pkt->buf & (USBHS_USB_DMAC_XFER_SIZE - 1)) | |
999 | goto usbhsf_pio_prepare_pop; | |
1000 | ||
d6efa938 YS |
1001 | /* return at this time if the pipe is running */ |
1002 | if (usbhs_pipe_is_running(pipe)) | |
1003 | return 0; | |
1004 | ||
ab330cf3 YS |
1005 | usbhs_pipe_config_change_bfre(pipe, 1); |
1006 | ||
1007 | ret = usbhsf_fifo_select(pipe, fifo, 0); | |
1008 | if (ret < 0) | |
1009 | goto usbhsf_pio_prepare_pop; | |
1010 | ||
1011 | if (usbhsf_dma_map(pkt) < 0) | |
1012 | goto usbhsf_pio_prepare_pop_unselect; | |
1013 | ||
1014 | /* DMA */ | |
1015 | ||
1016 | /* | |
1017 | * usbhs_fifo_dma_pop_handler :: prepare | |
1018 | * enabled irq to come here. | |
1019 | * but it is no longer needed for DMA. disable it. | |
1020 | */ | |
1021 | usbhsf_rx_irq_ctrl(pipe, 0); | |
1022 | ||
1023 | pkt->trans = pkt->length; | |
1024 | ||
b2357839 | 1025 | usbhsf_dma_xfer_preparing(pkt); |
ab330cf3 YS |
1026 | |
1027 | return 0; | |
1028 | ||
1029 | usbhsf_pio_prepare_pop_unselect: | |
1030 | usbhsf_fifo_unselect(pipe, fifo); | |
1031 | usbhsf_pio_prepare_pop: | |
1032 | ||
1033 | /* | |
1034 | * change handler to PIO | |
1035 | */ | |
1036 | pkt->handler = &usbhs_fifo_pio_pop_handler; | |
1037 | usbhs_pipe_config_change_bfre(pipe, 0); | |
1038 | ||
1039 | return pkt->handler->prepare(pkt, is_done); | |
1040 | } | |
1041 | ||
1042 | static int usbhsf_dma_prepare_pop(struct usbhs_pkt *pkt, int *is_done) | |
1043 | { | |
1044 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); | |
1045 | ||
1046 | if (usbhs_get_dparam(priv, has_usb_dmac)) | |
1047 | return usbhsf_dma_prepare_pop_with_usb_dmac(pkt, is_done); | |
1048 | else | |
1049 | return usbhsf_dma_prepare_pop_with_rx_irq(pkt, is_done); | |
1050 | } | |
1051 | ||
1052 | static int usbhsf_dma_try_pop_with_rx_irq(struct usbhs_pkt *pkt, int *is_done) | |
e73a9891 KM |
1053 | { |
1054 | struct usbhs_pipe *pipe = pkt->pipe; | |
1055 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
1056 | struct usbhs_fifo *fifo; | |
1057 | int len, ret; | |
1058 | ||
1059 | if (usbhs_pipe_is_busy(pipe)) | |
1060 | return 0; | |
1061 | ||
1062 | if (usbhs_pipe_is_dcp(pipe)) | |
1063 | goto usbhsf_pio_prepare_pop; | |
1064 | ||
1065 | /* get enable DMA fifo */ | |
1066 | fifo = usbhsf_get_dma_fifo(priv, pkt); | |
1067 | if (!fifo) | |
1068 | goto usbhsf_pio_prepare_pop; | |
1069 | ||
c9ae0c91 | 1070 | if ((uintptr_t)(pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */ |
9a12d097 KM |
1071 | goto usbhsf_pio_prepare_pop; |
1072 | ||
e73a9891 KM |
1073 | ret = usbhsf_fifo_select(pipe, fifo, 0); |
1074 | if (ret < 0) | |
1075 | goto usbhsf_pio_prepare_pop; | |
1076 | ||
1077 | /* use PIO if packet is less than pio_dma_border */ | |
1078 | len = usbhsf_fifo_rcv_len(priv, fifo); | |
1079 | len = min(pkt->length - pkt->actual, len); | |
77975eec | 1080 | if (len & 0x7) /* 8byte alignment */ |
e73a9891 KM |
1081 | goto usbhsf_pio_prepare_pop_unselect; |
1082 | ||
1083 | if (len < usbhs_get_dparam(priv, pio_dma_border)) | |
1084 | goto usbhsf_pio_prepare_pop_unselect; | |
1085 | ||
1086 | ret = usbhsf_fifo_barrier(priv, fifo); | |
1087 | if (ret < 0) | |
1088 | goto usbhsf_pio_prepare_pop_unselect; | |
1089 | ||
1090 | if (usbhsf_dma_map(pkt) < 0) | |
1091 | goto usbhsf_pio_prepare_pop_unselect; | |
1092 | ||
1093 | /* DMA */ | |
1094 | ||
1095 | /* | |
1096 | * usbhs_fifo_dma_pop_handler :: prepare | |
1097 | * enabled irq to come here. | |
1098 | * but it is no longer needed for DMA. disable it. | |
1099 | */ | |
1100 | usbhsf_rx_irq_ctrl(pipe, 0); | |
1101 | ||
1102 | pkt->trans = len; | |
1103 | ||
6e4b74e4 GL |
1104 | INIT_WORK(&pkt->work, xfer_work); |
1105 | schedule_work(&pkt->work); | |
e73a9891 KM |
1106 | |
1107 | return 0; | |
1108 | ||
1109 | usbhsf_pio_prepare_pop_unselect: | |
1110 | usbhsf_fifo_unselect(pipe, fifo); | |
1111 | usbhsf_pio_prepare_pop: | |
1112 | ||
1113 | /* | |
1114 | * change handler to PIO | |
1115 | */ | |
1116 | pkt->handler = &usbhs_fifo_pio_pop_handler; | |
1117 | ||
1118 | return pkt->handler->try_run(pkt, is_done); | |
1119 | } | |
1120 | ||
ab330cf3 YS |
1121 | static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done) |
1122 | { | |
1123 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); | |
1124 | ||
1125 | BUG_ON(usbhs_get_dparam(priv, has_usb_dmac)); | |
1126 | ||
1127 | return usbhsf_dma_try_pop_with_rx_irq(pkt, is_done); | |
1128 | } | |
1129 | ||
1130 | static int usbhsf_dma_pop_done_with_rx_irq(struct usbhs_pkt *pkt, int *is_done) | |
e73a9891 KM |
1131 | { |
1132 | struct usbhs_pipe *pipe = pkt->pipe; | |
1133 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
1134 | ||
1135 | usbhsf_dma_stop(pipe, pipe->fifo); | |
1136 | usbhsf_dma_unmap(pkt); | |
1137 | usbhsf_fifo_unselect(pipe, pipe->fifo); | |
1138 | ||
1139 | pkt->actual += pkt->trans; | |
1140 | ||
1141 | if ((pkt->actual == pkt->length) || /* receive all data */ | |
1142 | (pkt->trans < maxp)) { /* short packet */ | |
1143 | *is_done = 1; | |
8355b2b3 | 1144 | usbhs_pipe_running(pipe, 0); |
e73a9891 KM |
1145 | } else { |
1146 | /* re-enable */ | |
8355b2b3 | 1147 | usbhs_pipe_running(pipe, 0); |
e73a9891 KM |
1148 | usbhsf_prepare_pop(pkt, is_done); |
1149 | } | |
1150 | ||
1151 | return 0; | |
1152 | } | |
1153 | ||
ab330cf3 YS |
1154 | static size_t usbhs_dma_calc_received_size(struct usbhs_pkt *pkt, |
1155 | struct dma_chan *chan, int dtln) | |
1156 | { | |
1157 | struct usbhs_pipe *pipe = pkt->pipe; | |
ab330cf3 YS |
1158 | size_t received_size; |
1159 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
1160 | ||
ea0efd68 | 1161 | received_size = pkt->length - pkt->dma_result->residue; |
ab330cf3 YS |
1162 | |
1163 | if (dtln) { | |
1164 | received_size -= USBHS_USB_DMAC_XFER_SIZE; | |
1165 | received_size &= ~(maxp - 1); | |
1166 | received_size += dtln; | |
1167 | } | |
1168 | ||
1169 | return received_size; | |
1170 | } | |
1171 | ||
1172 | static int usbhsf_dma_pop_done_with_usb_dmac(struct usbhs_pkt *pkt, | |
1173 | int *is_done) | |
1174 | { | |
1175 | struct usbhs_pipe *pipe = pkt->pipe; | |
1176 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
1177 | struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); | |
1178 | struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt); | |
1179 | int rcv_len; | |
1180 | ||
1181 | /* | |
1182 | * Since the driver disables rx_irq in DMA mode, the interrupt handler | |
1183 | * cannot the BRDYSTS. So, the function clears it here because the | |
1184 | * driver may use PIO mode next time. | |
1185 | */ | |
1186 | usbhs_xxxsts_clear(priv, BRDYSTS, usbhs_pipe_number(pipe)); | |
1187 | ||
1188 | rcv_len = usbhsf_fifo_rcv_len(priv, fifo); | |
1189 | usbhsf_fifo_clear(pipe, fifo); | |
1190 | pkt->actual = usbhs_dma_calc_received_size(pkt, chan, rcv_len); | |
1191 | ||
d6efa938 | 1192 | usbhs_pipe_running(pipe, 0); |
ab330cf3 YS |
1193 | usbhsf_dma_stop(pipe, fifo); |
1194 | usbhsf_dma_unmap(pkt); | |
1195 | usbhsf_fifo_unselect(pipe, pipe->fifo); | |
1196 | ||
1197 | /* The driver can assume the rx transaction is always "done" */ | |
1198 | *is_done = 1; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | static int usbhsf_dma_pop_done(struct usbhs_pkt *pkt, int *is_done) | |
1204 | { | |
1205 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); | |
1206 | ||
1207 | if (usbhs_get_dparam(priv, has_usb_dmac)) | |
1208 | return usbhsf_dma_pop_done_with_usb_dmac(pkt, is_done); | |
1209 | else | |
1210 | return usbhsf_dma_pop_done_with_rx_irq(pkt, is_done); | |
1211 | } | |
1212 | ||
fcb42e23 | 1213 | const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler = { |
ab330cf3 | 1214 | .prepare = usbhsf_dma_prepare_pop, |
e73a9891 KM |
1215 | .try_run = usbhsf_dma_try_pop, |
1216 | .dma_done = usbhsf_dma_pop_done | |
1217 | }; | |
1218 | ||
1219 | /* | |
1220 | * DMA setting | |
1221 | */ | |
1222 | static bool usbhsf_dma_filter(struct dma_chan *chan, void *param) | |
1223 | { | |
1224 | struct sh_dmae_slave *slave = param; | |
1225 | ||
1226 | /* | |
1227 | * FIXME | |
1228 | * | |
1229 | * usbhs doesn't recognize id = 0 as valid DMA | |
1230 | */ | |
f19b7e0d | 1231 | if (0 == slave->shdma_slave.slave_id) |
e73a9891 KM |
1232 | return false; |
1233 | ||
1234 | chan->private = slave; | |
1235 | ||
1236 | return true; | |
1237 | } | |
1238 | ||
1239 | static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo) | |
1240 | { | |
1241 | if (fifo->tx_chan) | |
1242 | dma_release_channel(fifo->tx_chan); | |
1243 | if (fifo->rx_chan) | |
1244 | dma_release_channel(fifo->rx_chan); | |
1245 | ||
1246 | fifo->tx_chan = NULL; | |
1247 | fifo->rx_chan = NULL; | |
1248 | } | |
1249 | ||
6e3f53ab | 1250 | static void usbhsf_dma_init_pdev(struct usbhs_fifo *fifo) |
e73a9891 | 1251 | { |
e73a9891 KM |
1252 | dma_cap_mask_t mask; |
1253 | ||
1254 | dma_cap_zero(mask); | |
1255 | dma_cap_set(DMA_SLAVE, mask); | |
1256 | fifo->tx_chan = dma_request_channel(mask, usbhsf_dma_filter, | |
1257 | &fifo->tx_slave); | |
1258 | ||
1259 | dma_cap_zero(mask); | |
1260 | dma_cap_set(DMA_SLAVE, mask); | |
1261 | fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter, | |
1262 | &fifo->rx_slave); | |
6e3f53ab YS |
1263 | } |
1264 | ||
7a96b784 YS |
1265 | static void usbhsf_dma_init_dt(struct device *dev, struct usbhs_fifo *fifo, |
1266 | int channel) | |
abd2dbf6 | 1267 | { |
7a96b784 YS |
1268 | char name[16]; |
1269 | ||
7cc99f1e YS |
1270 | /* |
1271 | * To avoid complex handing for DnFIFOs, the driver uses each | |
1272 | * DnFIFO as TX or RX direction (not bi-direction). | |
1273 | * So, the driver uses odd channels for TX, even channels for RX. | |
1274 | */ | |
1275 | snprintf(name, sizeof(name), "ch%d", channel); | |
1276 | if (channel & 1) { | |
ba9f0f6e | 1277 | fifo->tx_chan = dma_request_chan(dev, name); |
7cc99f1e YS |
1278 | if (IS_ERR(fifo->tx_chan)) |
1279 | fifo->tx_chan = NULL; | |
1280 | } else { | |
ba9f0f6e | 1281 | fifo->rx_chan = dma_request_chan(dev, name); |
7cc99f1e YS |
1282 | if (IS_ERR(fifo->rx_chan)) |
1283 | fifo->rx_chan = NULL; | |
1284 | } | |
abd2dbf6 YS |
1285 | } |
1286 | ||
7a96b784 YS |
1287 | static void usbhsf_dma_init(struct usbhs_priv *priv, struct usbhs_fifo *fifo, |
1288 | int channel) | |
6e3f53ab YS |
1289 | { |
1290 | struct device *dev = usbhs_priv_to_dev(priv); | |
1291 | ||
31e795c6 | 1292 | if (dev_of_node(dev)) |
7a96b784 | 1293 | usbhsf_dma_init_dt(dev, fifo, channel); |
abd2dbf6 YS |
1294 | else |
1295 | usbhsf_dma_init_pdev(fifo); | |
e73a9891 KM |
1296 | |
1297 | if (fifo->tx_chan || fifo->rx_chan) | |
4ce68805 | 1298 | dev_dbg(dev, "enable DMAEngine (%s%s%s)\n", |
e73a9891 KM |
1299 | fifo->name, |
1300 | fifo->tx_chan ? "[TX]" : " ", | |
1301 | fifo->rx_chan ? "[RX]" : " "); | |
1302 | } | |
1303 | ||
dad67397 KM |
1304 | /* |
1305 | * irq functions | |
1306 | */ | |
1307 | static int usbhsf_irq_empty(struct usbhs_priv *priv, | |
1308 | struct usbhs_irq_state *irq_state) | |
1309 | { | |
1310 | struct usbhs_pipe *pipe; | |
dad67397 KM |
1311 | struct device *dev = usbhs_priv_to_dev(priv); |
1312 | int i, ret; | |
1313 | ||
1314 | if (!irq_state->bempsts) { | |
1315 | dev_err(dev, "debug %s !!\n", __func__); | |
1316 | return -EIO; | |
1317 | } | |
1318 | ||
1319 | dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts); | |
1320 | ||
1321 | /* | |
1322 | * search interrupted "pipe" | |
1323 | * not "uep". | |
1324 | */ | |
1325 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
1326 | if (!(irq_state->bempsts & (1 << i))) | |
1327 | continue; | |
1328 | ||
51b8a021 | 1329 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); |
dad67397 KM |
1330 | if (ret < 0) |
1331 | dev_err(dev, "irq_empty run_error %d : %d\n", i, ret); | |
1332 | } | |
1333 | ||
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | static int usbhsf_irq_ready(struct usbhs_priv *priv, | |
1338 | struct usbhs_irq_state *irq_state) | |
1339 | { | |
1340 | struct usbhs_pipe *pipe; | |
dad67397 KM |
1341 | struct device *dev = usbhs_priv_to_dev(priv); |
1342 | int i, ret; | |
1343 | ||
1344 | if (!irq_state->brdysts) { | |
1345 | dev_err(dev, "debug %s !!\n", __func__); | |
1346 | return -EIO; | |
1347 | } | |
1348 | ||
1349 | dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts); | |
1350 | ||
1351 | /* | |
1352 | * search interrupted "pipe" | |
1353 | * not "uep". | |
1354 | */ | |
1355 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
1356 | if (!(irq_state->brdysts & (1 << i))) | |
1357 | continue; | |
1358 | ||
51b8a021 | 1359 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); |
dad67397 KM |
1360 | if (ret < 0) |
1361 | dev_err(dev, "irq_ready run_error %d : %d\n", i, ret); | |
1362 | } | |
1363 | ||
1364 | return 0; | |
1365 | } | |
1366 | ||
ea0efd68 YS |
1367 | static void usbhsf_dma_complete(void *arg, |
1368 | const struct dmaengine_result *result) | |
e73a9891 | 1369 | { |
ea0efd68 YS |
1370 | struct usbhs_pkt *pkt = arg; |
1371 | struct usbhs_pipe *pipe = pkt->pipe; | |
e73a9891 KM |
1372 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
1373 | struct device *dev = usbhs_priv_to_dev(priv); | |
1374 | int ret; | |
1375 | ||
ea0efd68 | 1376 | pkt->dma_result = result; |
51b8a021 | 1377 | ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_DMA_DONE); |
e73a9891 KM |
1378 | if (ret < 0) |
1379 | dev_err(dev, "dma_complete run_error %d : %d\n", | |
1380 | usbhs_pipe_number(pipe), ret); | |
1381 | } | |
1382 | ||
cdeb7943 YS |
1383 | void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe) |
1384 | { | |
1385 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
1386 | struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ | |
1387 | ||
1388 | /* clear DCP FIFO of transmission */ | |
1389 | if (usbhsf_fifo_select(pipe, fifo, 1) < 0) | |
1390 | return; | |
1391 | usbhsf_fifo_clear(pipe, fifo); | |
1392 | usbhsf_fifo_unselect(pipe, fifo); | |
1393 | ||
1394 | /* clear DCP FIFO of reception */ | |
1395 | if (usbhsf_fifo_select(pipe, fifo, 0) < 0) | |
1396 | return; | |
1397 | usbhsf_fifo_clear(pipe, fifo); | |
1398 | usbhsf_fifo_unselect(pipe, fifo); | |
1399 | } | |
1400 | ||
dad67397 KM |
1401 | /* |
1402 | * fifo init | |
1403 | */ | |
1404 | void usbhs_fifo_init(struct usbhs_priv *priv) | |
1405 | { | |
1406 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
d77e3f4e | 1407 | struct usbhs_fifo *cfifo = usbhsf_get_cfifo(priv); |
3a2634a5 YS |
1408 | struct usbhs_fifo *dfifo; |
1409 | int i; | |
dad67397 KM |
1410 | |
1411 | mod->irq_empty = usbhsf_irq_empty; | |
1412 | mod->irq_ready = usbhsf_irq_ready; | |
1413 | mod->irq_bempsts = 0; | |
1414 | mod->irq_brdysts = 0; | |
d77e3f4e KM |
1415 | |
1416 | cfifo->pipe = NULL; | |
3a2634a5 YS |
1417 | usbhs_for_each_dfifo(priv, dfifo, i) |
1418 | dfifo->pipe = NULL; | |
dad67397 KM |
1419 | } |
1420 | ||
1421 | void usbhs_fifo_quit(struct usbhs_priv *priv) | |
1422 | { | |
1423 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
1424 | ||
1425 | mod->irq_empty = NULL; | |
1426 | mod->irq_ready = NULL; | |
1427 | mod->irq_bempsts = 0; | |
1428 | mod->irq_brdysts = 0; | |
1429 | } | |
d3af90a5 | 1430 | |
53e734b1 | 1431 | #define __USBHS_DFIFO_INIT(priv, fifo, channel, fifo_port) \ |
3a2634a5 YS |
1432 | do { \ |
1433 | fifo = usbhsf_get_dnfifo(priv, channel); \ | |
1434 | fifo->name = "D"#channel"FIFO"; \ | |
53e734b1 | 1435 | fifo->port = fifo_port; \ |
3a2634a5 YS |
1436 | fifo->sel = D##channel##FIFOSEL; \ |
1437 | fifo->ctr = D##channel##FIFOCTR; \ | |
1438 | fifo->tx_slave.shdma_slave.slave_id = \ | |
1439 | usbhs_get_dparam(priv, d##channel##_tx_id); \ | |
1440 | fifo->rx_slave.shdma_slave.slave_id = \ | |
1441 | usbhs_get_dparam(priv, d##channel##_rx_id); \ | |
7a96b784 | 1442 | usbhsf_dma_init(priv, fifo, channel); \ |
3a2634a5 YS |
1443 | } while (0) |
1444 | ||
53e734b1 YS |
1445 | #define USBHS_DFIFO_INIT(priv, fifo, channel) \ |
1446 | __USBHS_DFIFO_INIT(priv, fifo, channel, D##channel##FIFO) | |
1447 | #define USBHS_DFIFO_INIT_NO_PORT(priv, fifo, channel) \ | |
1448 | __USBHS_DFIFO_INIT(priv, fifo, channel, 0) | |
1449 | ||
d3af90a5 KM |
1450 | int usbhs_fifo_probe(struct usbhs_priv *priv) |
1451 | { | |
1452 | struct usbhs_fifo *fifo; | |
1453 | ||
1454 | /* CFIFO */ | |
1455 | fifo = usbhsf_get_cfifo(priv); | |
e73a9891 | 1456 | fifo->name = "CFIFO"; |
d3af90a5 KM |
1457 | fifo->port = CFIFO; |
1458 | fifo->sel = CFIFOSEL; | |
1459 | fifo->ctr = CFIFOCTR; | |
1460 | ||
3a2634a5 YS |
1461 | /* DFIFO */ |
1462 | USBHS_DFIFO_INIT(priv, fifo, 0); | |
1463 | USBHS_DFIFO_INIT(priv, fifo, 1); | |
d3cf6a4b YS |
1464 | USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 2); |
1465 | USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 3); | |
e73a9891 | 1466 | |
d3af90a5 KM |
1467 | return 0; |
1468 | } | |
1469 | ||
1470 | void usbhs_fifo_remove(struct usbhs_priv *priv) | |
1471 | { | |
3a2634a5 YS |
1472 | struct usbhs_fifo *fifo; |
1473 | int i; | |
1474 | ||
1475 | usbhs_for_each_dfifo(priv, fifo, i) | |
1476 | usbhsf_dma_quit(priv, fifo); | |
d3af90a5 | 1477 | } |