Commit | Line | Data |
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f1407d5c 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> | |
f1407d5c | 18 | #include <linux/slab.h> |
cc502bb7 PB |
19 | #include "common.h" |
20 | #include "pipe.h" | |
f1407d5c KM |
21 | |
22 | /* | |
23 | * macros | |
24 | */ | |
f1407d5c KM |
25 | #define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2) |
26 | ||
f1407d5c KM |
27 | #define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f) |
28 | #define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f) | |
29 | #define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f) | |
30 | #define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0) | |
31 | ||
f1407d5c KM |
32 | /* |
33 | * for debug | |
34 | */ | |
35 | static char *usbhsp_pipe_name[] = { | |
36 | [USB_ENDPOINT_XFER_CONTROL] = "DCP", | |
37 | [USB_ENDPOINT_XFER_BULK] = "BULK", | |
38 | [USB_ENDPOINT_XFER_INT] = "INT", | |
39 | [USB_ENDPOINT_XFER_ISOC] = "ISO", | |
40 | }; | |
41 | ||
3cf8ed12 KM |
42 | char *usbhs_pipe_name(struct usbhs_pipe *pipe) |
43 | { | |
44 | return usbhsp_pipe_name[usbhs_pipe_type(pipe)]; | |
45 | } | |
46 | ||
51f141a9 YS |
47 | static struct renesas_usbhs_driver_pipe_config |
48 | *usbhsp_get_pipe_config(struct usbhs_priv *priv, int pipe_num) | |
49 | { | |
50 | struct renesas_usbhs_driver_pipe_config *pipe_configs = | |
51 | usbhs_get_dparam(priv, pipe_configs); | |
52 | ||
53 | return &pipe_configs[pipe_num]; | |
54 | } | |
55 | ||
f1407d5c KM |
56 | /* |
57 | * DCPCTR/PIPEnCTR functions | |
58 | */ | |
59 | static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
60 | { | |
e8d548d5 | 61 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
62 | int offset = usbhsp_addr_offset(pipe); |
63 | ||
e8d548d5 | 64 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
65 | usbhs_bset(priv, DCPCTR, mask, val); |
66 | else | |
67 | usbhs_bset(priv, PIPEnCTR + offset, mask, val); | |
68 | } | |
69 | ||
70 | static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe) | |
71 | { | |
e8d548d5 | 72 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
73 | int offset = usbhsp_addr_offset(pipe); |
74 | ||
e8d548d5 | 75 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
76 | return usbhs_read(priv, DCPCTR); |
77 | else | |
78 | return usbhs_read(priv, PIPEnCTR + offset); | |
79 | } | |
80 | ||
81 | /* | |
82 | * DCP/PIPE functions | |
83 | */ | |
84 | static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe, | |
85 | u16 dcp_reg, u16 pipe_reg, | |
86 | u16 mask, u16 val) | |
87 | { | |
e8d548d5 | 88 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c | 89 | |
e8d548d5 | 90 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
91 | usbhs_bset(priv, dcp_reg, mask, val); |
92 | else | |
93 | usbhs_bset(priv, pipe_reg, mask, val); | |
94 | } | |
95 | ||
ab330cf3 YS |
96 | static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe, |
97 | u16 dcp_reg, u16 pipe_reg) | |
98 | { | |
99 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
100 | ||
101 | if (usbhs_pipe_is_dcp(pipe)) | |
102 | return usbhs_read(priv, dcp_reg); | |
103 | else | |
104 | return usbhs_read(priv, pipe_reg); | |
105 | } | |
106 | ||
f1407d5c KM |
107 | /* |
108 | * DCPCFG/PIPECFG functions | |
109 | */ | |
110 | static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
111 | { | |
112 | __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val); | |
113 | } | |
114 | ||
ab330cf3 YS |
115 | static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe) |
116 | { | |
117 | return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG); | |
118 | } | |
119 | ||
1c90ee0b KM |
120 | /* |
121 | * PIPEnTRN/PIPEnTRE functions | |
122 | */ | |
123 | static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
124 | { | |
125 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
126 | struct device *dev = usbhs_priv_to_dev(priv); | |
127 | int num = usbhs_pipe_number(pipe); | |
128 | u16 reg; | |
129 | ||
130 | /* | |
131 | * It is impossible to calculate address, | |
132 | * since PIPEnTRN addresses were mapped randomly. | |
133 | */ | |
134 | #define CASE_PIPExTRN(a) \ | |
135 | case 0x ## a: \ | |
136 | reg = PIPE ## a ## TRN; \ | |
137 | break; | |
138 | ||
139 | switch (num) { | |
140 | CASE_PIPExTRN(1); | |
141 | CASE_PIPExTRN(2); | |
142 | CASE_PIPExTRN(3); | |
143 | CASE_PIPExTRN(4); | |
144 | CASE_PIPExTRN(5); | |
145 | CASE_PIPExTRN(B); | |
146 | CASE_PIPExTRN(C); | |
147 | CASE_PIPExTRN(D); | |
148 | CASE_PIPExTRN(E); | |
149 | CASE_PIPExTRN(F); | |
150 | CASE_PIPExTRN(9); | |
151 | CASE_PIPExTRN(A); | |
152 | default: | |
153 | dev_err(dev, "unknown pipe (%d)\n", num); | |
154 | return; | |
155 | } | |
156 | __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); | |
157 | } | |
158 | ||
159 | static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
160 | { | |
161 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
162 | struct device *dev = usbhs_priv_to_dev(priv); | |
163 | int num = usbhs_pipe_number(pipe); | |
164 | u16 reg; | |
165 | ||
166 | /* | |
167 | * It is impossible to calculate address, | |
168 | * since PIPEnTRE addresses were mapped randomly. | |
169 | */ | |
170 | #define CASE_PIPExTRE(a) \ | |
171 | case 0x ## a: \ | |
172 | reg = PIPE ## a ## TRE; \ | |
173 | break; | |
174 | ||
175 | switch (num) { | |
176 | CASE_PIPExTRE(1); | |
177 | CASE_PIPExTRE(2); | |
178 | CASE_PIPExTRE(3); | |
179 | CASE_PIPExTRE(4); | |
180 | CASE_PIPExTRE(5); | |
181 | CASE_PIPExTRE(B); | |
182 | CASE_PIPExTRE(C); | |
183 | CASE_PIPExTRE(D); | |
184 | CASE_PIPExTRE(E); | |
185 | CASE_PIPExTRE(F); | |
186 | CASE_PIPExTRE(9); | |
187 | CASE_PIPExTRE(A); | |
188 | default: | |
189 | dev_err(dev, "unknown pipe (%d)\n", num); | |
190 | return; | |
191 | } | |
192 | ||
193 | __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); | |
194 | } | |
195 | ||
f1407d5c KM |
196 | /* |
197 | * PIPEBUF | |
198 | */ | |
199 | static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
200 | { | |
e8d548d5 | 201 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
202 | return; |
203 | ||
204 | __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val); | |
205 | } | |
206 | ||
207 | /* | |
208 | * DCPMAXP/PIPEMAXP | |
209 | */ | |
210 | static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
211 | { | |
212 | __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val); | |
213 | } | |
214 | ||
f1407d5c KM |
215 | /* |
216 | * pipe control functions | |
217 | */ | |
218 | static void usbhsp_pipe_select(struct usbhs_pipe *pipe) | |
219 | { | |
e8d548d5 | 220 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
221 | |
222 | /* | |
223 | * On pipe, this is necessary before | |
224 | * accesses to below registers. | |
225 | * | |
226 | * PIPESEL : usbhsp_pipe_select | |
227 | * PIPECFG : usbhsp_pipe_cfg_xxx | |
228 | * PIPEBUF : usbhsp_pipe_buf_xxx | |
229 | * PIPEMAXP : usbhsp_pipe_maxp_xxx | |
230 | * PIPEPERI | |
231 | */ | |
232 | ||
233 | /* | |
234 | * if pipe is dcp, no pipe is selected. | |
235 | * it is no problem, because dcp have its register | |
236 | */ | |
237 | usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe)); | |
238 | } | |
239 | ||
240 | static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe) | |
241 | { | |
e8d548d5 | 242 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
243 | int timeout = 1024; |
244 | u16 val; | |
245 | ||
246 | /* | |
247 | * make sure.... | |
248 | * | |
249 | * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is | |
250 | * specified by the CURPIPE bits. | |
251 | * When changing the setting of this bit after changing | |
252 | * the PID bits for the selected pipe from BUF to NAK, | |
253 | * check that CSSTS = 0 and PBUSY = 0. | |
254 | */ | |
255 | ||
256 | /* | |
257 | * CURPIPE bit = 0 | |
258 | * | |
259 | * see also | |
260 | * "Operation" | |
261 | * - "Pipe Control" | |
262 | * - "Pipe Control Registers Switching Procedure" | |
263 | */ | |
264 | usbhs_write(priv, CFIFOSEL, 0); | |
e8d548d5 | 265 | usbhs_pipe_disable(pipe); |
f1407d5c KM |
266 | |
267 | do { | |
268 | val = usbhsp_pipectrl_get(pipe); | |
269 | val &= CSSTS | PID_MASK; | |
270 | if (!val) | |
271 | return 0; | |
272 | ||
273 | udelay(10); | |
274 | ||
275 | } while (timeout--); | |
276 | ||
f1407d5c KM |
277 | return -EBUSY; |
278 | } | |
279 | ||
e8d548d5 | 280 | int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) |
f1407d5c KM |
281 | { |
282 | u16 val; | |
283 | ||
284 | val = usbhsp_pipectrl_get(pipe); | |
285 | if (val & BSTS) | |
286 | return 0; | |
287 | ||
288 | return -EBUSY; | |
289 | } | |
290 | ||
291 | /* | |
292 | * PID ctrl | |
293 | */ | |
294 | static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) | |
295 | { | |
296 | u16 pid = usbhsp_pipectrl_get(pipe); | |
297 | ||
298 | pid &= PID_MASK; | |
299 | ||
300 | /* | |
301 | * see | |
302 | * "Pipe n Control Register" - "PID" | |
303 | */ | |
304 | switch (pid) { | |
305 | case PID_STALL11: | |
306 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
307 | /* fall-through */ | |
308 | case PID_STALL10: | |
309 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
310 | } | |
311 | } | |
312 | ||
e8d548d5 | 313 | void usbhs_pipe_disable(struct usbhs_pipe *pipe) |
f1407d5c | 314 | { |
c786e09c KM |
315 | int timeout = 1024; |
316 | u16 val; | |
317 | ||
f1407d5c KM |
318 | /* see "Pipe n Control Register" - "PID" */ |
319 | __usbhsp_pid_try_nak_if_stall(pipe); | |
320 | ||
321 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
c786e09c KM |
322 | |
323 | do { | |
324 | val = usbhsp_pipectrl_get(pipe); | |
325 | val &= PBUSY; | |
326 | if (!val) | |
327 | break; | |
328 | ||
329 | udelay(10); | |
330 | } while (timeout--); | |
f1407d5c KM |
331 | } |
332 | ||
e8d548d5 | 333 | void usbhs_pipe_enable(struct usbhs_pipe *pipe) |
f1407d5c KM |
334 | { |
335 | /* see "Pipe n Control Register" - "PID" */ | |
336 | __usbhsp_pid_try_nak_if_stall(pipe); | |
337 | ||
338 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); | |
339 | } | |
340 | ||
e8d548d5 | 341 | void usbhs_pipe_stall(struct usbhs_pipe *pipe) |
f1407d5c KM |
342 | { |
343 | u16 pid = usbhsp_pipectrl_get(pipe); | |
344 | ||
345 | pid &= PID_MASK; | |
346 | ||
347 | /* | |
348 | * see | |
349 | * "Pipe n Control Register" - "PID" | |
350 | */ | |
351 | switch (pid) { | |
352 | case PID_NAK: | |
353 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
354 | break; | |
355 | case PID_BUF: | |
356 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); | |
357 | break; | |
358 | } | |
359 | } | |
360 | ||
9cf1b06e KM |
361 | int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) |
362 | { | |
363 | u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; | |
364 | ||
365 | return (int)(pid == PID_STALL10 || pid == PID_STALL11); | |
366 | } | |
367 | ||
1c90ee0b KM |
368 | void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) |
369 | { | |
370 | if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
371 | return; | |
372 | ||
373 | /* | |
374 | * clear and disable transfer counter for IN/OUT pipe | |
375 | */ | |
376 | usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); | |
377 | ||
378 | /* | |
379 | * Only IN direction bulk pipe can use transfer count. | |
380 | * Without using this function, | |
381 | * received data will break if it was large data size. | |
382 | * see PIPEnTRN/PIPEnTRE for detail | |
383 | */ | |
384 | if (usbhs_pipe_is_dir_in(pipe)) { | |
385 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
386 | ||
387 | usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); | |
388 | usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ | |
389 | } | |
390 | } | |
391 | ||
392 | ||
f1407d5c KM |
393 | /* |
394 | * pipe setup | |
395 | */ | |
f1407d5c | 396 | static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, |
f5aa889f KM |
397 | int is_host, |
398 | int dir_in) | |
f1407d5c KM |
399 | { |
400 | u16 type = 0; | |
401 | u16 bfre = 0; | |
402 | u16 dblb = 0; | |
403 | u16 cntmd = 0; | |
404 | u16 dir = 0; | |
405 | u16 epnum = 0; | |
406 | u16 shtnak = 0; | |
407 | u16 type_array[] = { | |
408 | [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, | |
409 | [USB_ENDPOINT_XFER_INT] = TYPE_INT, | |
410 | [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, | |
411 | }; | |
f1407d5c | 412 | |
e8d548d5 | 413 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
414 | return -EINVAL; |
415 | ||
416 | /* | |
417 | * PIPECFG | |
418 | * | |
419 | * see | |
420 | * - "Register Descriptions" - "PIPECFG" register | |
421 | * - "Features" - "Pipe configuration" | |
422 | * - "Operation" - "Pipe Control" | |
423 | */ | |
424 | ||
425 | /* TYPE */ | |
356db7ed | 426 | type = type_array[usbhs_pipe_type(pipe)]; |
f1407d5c KM |
427 | |
428 | /* BFRE */ | |
356db7ed KM |
429 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || |
430 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
f1407d5c KM |
431 | bfre = 0; /* FIXME */ |
432 | ||
51f141a9 | 433 | /* DBLB: see usbhs_pipe_config_update() */ |
f1407d5c KM |
434 | |
435 | /* CNTMD */ | |
356db7ed | 436 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) |
f1407d5c KM |
437 | cntmd = 0; /* FIXME */ |
438 | ||
439 | /* DIR */ | |
f5aa889f | 440 | if (dir_in) |
ad6f2a8b | 441 | usbhsp_flags_set(pipe, IS_DIR_HOST); |
f1407d5c | 442 | |
14ff96e0 | 443 | if (!!is_host ^ !!dir_in) |
f1407d5c KM |
444 | dir |= DIR_OUT; |
445 | ||
ad6f2a8b KM |
446 | if (!dir) |
447 | usbhsp_flags_set(pipe, IS_DIR_IN); | |
448 | ||
f1407d5c | 449 | /* SHTNAK */ |
356db7ed | 450 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && |
f1407d5c KM |
451 | !dir) |
452 | shtnak = SHTNAK; | |
453 | ||
454 | /* EPNUM */ | |
f5aa889f | 455 | epnum = 0; /* see usbhs_pipe_config_update() */ |
f1407d5c KM |
456 | |
457 | return type | | |
458 | bfre | | |
459 | dblb | | |
460 | cntmd | | |
461 | dir | | |
462 | shtnak | | |
463 | epnum; | |
464 | } | |
465 | ||
f5aa889f | 466 | static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) |
f1407d5c | 467 | { |
e8d548d5 | 468 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
469 | struct device *dev = usbhs_priv_to_dev(priv); |
470 | int pipe_num = usbhs_pipe_number(pipe); | |
f1407d5c KM |
471 | u16 buff_size; |
472 | u16 bufnmb; | |
473 | u16 bufnmb_cnt; | |
51f141a9 YS |
474 | struct renesas_usbhs_driver_pipe_config *pipe_config = |
475 | usbhsp_get_pipe_config(priv, pipe_num); | |
f1407d5c KM |
476 | |
477 | /* | |
478 | * PIPEBUF | |
479 | * | |
480 | * see | |
481 | * - "Register Descriptions" - "PIPEBUF" register | |
482 | * - "Features" - "Pipe configuration" | |
483 | * - "Operation" - "FIFO Buffer Memory" | |
484 | * - "Operation" - "Pipe Control" | |
f1407d5c | 485 | */ |
51f141a9 YS |
486 | buff_size = pipe_config->bufsize; |
487 | bufnmb = pipe_config->bufnum; | |
f1407d5c KM |
488 | |
489 | /* change buff_size to register value */ | |
490 | bufnmb_cnt = (buff_size / 64) - 1; | |
491 | ||
f1407d5c KM |
492 | dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", |
493 | pipe_num, buff_size, bufnmb); | |
494 | ||
495 | return (0x1f & bufnmb_cnt) << 10 | | |
496 | (0xff & bufnmb) << 0; | |
497 | } | |
498 | ||
bc6fbf59 KM |
499 | void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, |
500 | u16 epnum, u16 maxp) | |
f5aa889f | 501 | { |
51f141a9 YS |
502 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
503 | int pipe_num = usbhs_pipe_number(pipe); | |
504 | struct renesas_usbhs_driver_pipe_config *pipe_config = | |
505 | usbhsp_get_pipe_config(priv, pipe_num); | |
506 | u16 dblb = pipe_config->double_buf ? DBLB : 0; | |
507 | ||
bc6fbf59 | 508 | if (devsel > 0xA) { |
bc6fbf59 KM |
509 | struct device *dev = usbhs_priv_to_dev(priv); |
510 | ||
511 | dev_err(dev, "devsel error %d\n", devsel); | |
512 | ||
513 | devsel = 0; | |
514 | } | |
515 | ||
f5aa889f KM |
516 | usbhsp_pipe_barrier(pipe); |
517 | ||
7fd097e7 KM |
518 | pipe->maxp = maxp; |
519 | ||
f5aa889f | 520 | usbhsp_pipe_select(pipe); |
bc6fbf59 KM |
521 | usbhsp_pipe_maxp_set(pipe, 0xFFFF, |
522 | (devsel << 12) | | |
523 | maxp); | |
f5aa889f KM |
524 | |
525 | if (!usbhs_pipe_is_dcp(pipe)) | |
51f141a9 | 526 | usbhsp_pipe_cfg_set(pipe, 0x000F | DBLB, epnum | dblb); |
f5aa889f KM |
527 | } |
528 | ||
f1407d5c KM |
529 | /* |
530 | * pipe control | |
531 | */ | |
532 | int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) | |
533 | { | |
7fd097e7 KM |
534 | /* |
535 | * see | |
536 | * usbhs_pipe_config_update() | |
537 | * usbhs_dcp_malloc() | |
538 | */ | |
539 | return pipe->maxp; | |
f1407d5c KM |
540 | } |
541 | ||
542 | int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) | |
543 | { | |
544 | return usbhsp_flags_has(pipe, IS_DIR_IN); | |
545 | } | |
546 | ||
ad6f2a8b KM |
547 | int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) |
548 | { | |
549 | return usbhsp_flags_has(pipe, IS_DIR_HOST); | |
550 | } | |
551 | ||
8355b2b3 YS |
552 | int usbhs_pipe_is_running(struct usbhs_pipe *pipe) |
553 | { | |
554 | return usbhsp_flags_has(pipe, IS_RUNNING); | |
555 | } | |
556 | ||
557 | void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) | |
558 | { | |
559 | if (running) | |
560 | usbhsp_flags_set(pipe, IS_RUNNING); | |
561 | else | |
562 | usbhsp_flags_clr(pipe, IS_RUNNING); | |
563 | } | |
564 | ||
3edeee38 | 565 | void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) |
f1407d5c | 566 | { |
6e6db82b | 567 | u16 mask = (SQCLR | SQSET); |
3edeee38 KM |
568 | u16 val; |
569 | ||
570 | /* | |
571 | * sequence | |
572 | * 0 : data0 | |
573 | * 1 : data1 | |
574 | * -1 : no change | |
575 | */ | |
576 | switch (sequence) { | |
577 | case 0: | |
578 | val = SQCLR; | |
579 | break; | |
580 | case 1: | |
581 | val = SQSET; | |
582 | break; | |
583 | default: | |
584 | return; | |
585 | } | |
6e6db82b KM |
586 | |
587 | usbhsp_pipectrl_set(pipe, mask, val); | |
f1407d5c KM |
588 | } |
589 | ||
ab330cf3 YS |
590 | static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) |
591 | { | |
592 | return !!(usbhsp_pipectrl_get(pipe) & SQMON); | |
593 | } | |
594 | ||
08e6c611 KM |
595 | void usbhs_pipe_clear(struct usbhs_pipe *pipe) |
596 | { | |
cdeb7943 YS |
597 | if (usbhs_pipe_is_dcp(pipe)) { |
598 | usbhs_fifo_clear_dcp(pipe); | |
599 | } else { | |
600 | usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); | |
601 | usbhsp_pipectrl_set(pipe, ACLRM, 0); | |
602 | } | |
08e6c611 KM |
603 | } |
604 | ||
ab330cf3 YS |
605 | void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) |
606 | { | |
607 | int sequence; | |
608 | ||
609 | if (usbhs_pipe_is_dcp(pipe)) | |
610 | return; | |
611 | ||
612 | usbhsp_pipe_select(pipe); | |
613 | /* check if the driver needs to change the BFRE value */ | |
614 | if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) | |
615 | return; | |
616 | ||
617 | sequence = usbhs_pipe_get_data_sequence(pipe); | |
618 | usbhsp_pipe_cfg_set(pipe, BFRE, enable ? BFRE : 0); | |
619 | usbhs_pipe_clear(pipe); | |
620 | usbhs_pipe_data_sequence(pipe, sequence); | |
621 | } | |
622 | ||
f1407d5c KM |
623 | static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) |
624 | { | |
625 | struct usbhs_pipe *pos, *pipe; | |
626 | int i; | |
627 | ||
628 | /* | |
629 | * find target pipe | |
630 | */ | |
631 | pipe = NULL; | |
632 | usbhs_for_each_pipe_with_dcp(pos, priv, i) { | |
356db7ed | 633 | if (!usbhs_pipe_type_is(pos, type)) |
f1407d5c KM |
634 | continue; |
635 | if (usbhsp_flags_has(pos, IS_USED)) | |
636 | continue; | |
637 | ||
638 | pipe = pos; | |
639 | break; | |
640 | } | |
641 | ||
642 | if (!pipe) | |
643 | return NULL; | |
644 | ||
645 | /* | |
646 | * initialize pipe flags | |
647 | */ | |
648 | usbhsp_flags_init(pipe); | |
649 | usbhsp_flags_set(pipe, IS_USED); | |
650 | ||
651 | return pipe; | |
652 | } | |
653 | ||
dfb87b8b YS |
654 | static void usbhsp_put_pipe(struct usbhs_pipe *pipe) |
655 | { | |
656 | usbhsp_flags_init(pipe); | |
657 | } | |
658 | ||
4bd04811 | 659 | void usbhs_pipe_init(struct usbhs_priv *priv, |
e73a9891 | 660 | int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) |
f1407d5c | 661 | { |
e8d548d5 | 662 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
663 | struct usbhs_pipe *pipe; |
664 | int i; | |
665 | ||
f1407d5c | 666 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { |
f1407d5c | 667 | usbhsp_flags_init(pipe); |
d77e3f4e | 668 | pipe->fifo = NULL; |
f1407d5c | 669 | pipe->mod_private = NULL; |
6acb95d4 | 670 | INIT_LIST_HEAD(&pipe->list); |
45e13e6e | 671 | |
e8d548d5 | 672 | /* pipe force init */ |
08e6c611 | 673 | usbhs_pipe_clear(pipe); |
f1407d5c | 674 | } |
4bd04811 | 675 | |
e73a9891 | 676 | info->dma_map_ctrl = dma_map_ctrl; |
f1407d5c KM |
677 | } |
678 | ||
679 | struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, | |
f5aa889f KM |
680 | int endpoint_type, |
681 | int dir_in) | |
f1407d5c KM |
682 | { |
683 | struct device *dev = usbhs_priv_to_dev(priv); | |
f1407d5c | 684 | struct usbhs_pipe *pipe; |
0deb3e77 | 685 | int is_host = usbhs_mod_is_host(priv); |
f1407d5c | 686 | int ret; |
f5aa889f | 687 | u16 pipecfg, pipebuf; |
f1407d5c | 688 | |
f5aa889f | 689 | pipe = usbhsp_get_pipe(priv, endpoint_type); |
f429ea3f KM |
690 | if (!pipe) { |
691 | dev_err(dev, "can't get pipe (%s)\n", | |
f5aa889f | 692 | usbhsp_pipe_name[endpoint_type]); |
f1407d5c | 693 | return NULL; |
f429ea3f | 694 | } |
f1407d5c | 695 | |
6acb95d4 KM |
696 | INIT_LIST_HEAD(&pipe->list); |
697 | ||
e8d548d5 | 698 | usbhs_pipe_disable(pipe); |
f1407d5c KM |
699 | |
700 | /* make sure pipe is not busy */ | |
701 | ret = usbhsp_pipe_barrier(pipe); | |
702 | if (ret < 0) { | |
703 | dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); | |
704 | return NULL; | |
705 | } | |
706 | ||
f5aa889f KM |
707 | pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in); |
708 | pipebuf = usbhsp_setup_pipebuff(pipe); | |
f1407d5c | 709 | |
f1407d5c KM |
710 | usbhsp_pipe_select(pipe); |
711 | usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); | |
712 | usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); | |
6a054159 | 713 | usbhs_pipe_clear(pipe); |
f1407d5c | 714 | |
6e6db82b | 715 | usbhs_pipe_sequence_data0(pipe); |
f1407d5c KM |
716 | |
717 | dev_dbg(dev, "enable pipe %d : %s (%s)\n", | |
718 | usbhs_pipe_number(pipe), | |
3cf8ed12 | 719 | usbhs_pipe_name(pipe), |
f1407d5c KM |
720 | usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); |
721 | ||
f5aa889f KM |
722 | /* |
723 | * epnum / maxp are still not set to this pipe. | |
724 | * call usbhs_pipe_config_update() after this function !! | |
725 | */ | |
726 | ||
f1407d5c KM |
727 | return pipe; |
728 | } | |
729 | ||
dfb87b8b YS |
730 | void usbhs_pipe_free(struct usbhs_pipe *pipe) |
731 | { | |
732 | usbhsp_put_pipe(pipe); | |
733 | } | |
734 | ||
d77e3f4e KM |
735 | void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) |
736 | { | |
737 | if (pipe->fifo) | |
738 | pipe->fifo->pipe = NULL; | |
739 | ||
740 | pipe->fifo = fifo; | |
741 | ||
742 | if (fifo) | |
743 | fifo->pipe = pipe; | |
744 | } | |
745 | ||
746 | ||
f1407d5c KM |
747 | /* |
748 | * dcp control | |
749 | */ | |
750 | struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) | |
751 | { | |
752 | struct usbhs_pipe *pipe; | |
753 | ||
754 | pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); | |
755 | if (!pipe) | |
756 | return NULL; | |
757 | ||
f5aa889f KM |
758 | INIT_LIST_HEAD(&pipe->list); |
759 | ||
f1407d5c | 760 | /* |
f5aa889f | 761 | * call usbhs_pipe_config_update() after this function !! |
f1407d5c KM |
762 | */ |
763 | ||
f1407d5c KM |
764 | return pipe; |
765 | } | |
766 | ||
767 | void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) | |
768 | { | |
e2eddc61 KM |
769 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
770 | ||
e8d548d5 | 771 | WARN_ON(!usbhs_pipe_is_dcp(pipe)); |
f1407d5c | 772 | |
e8d548d5 | 773 | usbhs_pipe_enable(pipe); |
e2eddc61 KM |
774 | |
775 | if (!usbhs_mod_is_host(priv)) /* funconly */ | |
776 | usbhsp_pipectrl_set(pipe, CCPL, CCPL); | |
f1407d5c KM |
777 | } |
778 | ||
92352071 KM |
779 | void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) |
780 | { | |
781 | usbhsp_pipe_cfg_set(pipe, DIR_OUT, | |
782 | dir_out ? DIR_OUT : 0); | |
783 | } | |
784 | ||
f1407d5c KM |
785 | /* |
786 | * pipe module function | |
787 | */ | |
788 | int usbhs_pipe_probe(struct usbhs_priv *priv) | |
789 | { | |
e8d548d5 | 790 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
791 | struct usbhs_pipe *pipe; |
792 | struct device *dev = usbhs_priv_to_dev(priv); | |
51f141a9 YS |
793 | struct renesas_usbhs_driver_pipe_config *pipe_configs = |
794 | usbhs_get_dparam(priv, pipe_configs); | |
f1407d5c KM |
795 | int pipe_size = usbhs_get_dparam(priv, pipe_size); |
796 | int i; | |
797 | ||
798 | /* This driver expects 1st pipe is DCP */ | |
51f141a9 | 799 | if (pipe_configs[0].type != USB_ENDPOINT_XFER_CONTROL) { |
f1407d5c KM |
800 | dev_err(dev, "1st PIPE is not DCP\n"); |
801 | return -EINVAL; | |
802 | } | |
803 | ||
804 | info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); | |
805 | if (!info->pipe) { | |
806 | dev_err(dev, "Could not allocate pipe\n"); | |
807 | return -ENOMEM; | |
808 | } | |
809 | ||
810 | info->size = pipe_size; | |
811 | ||
812 | /* | |
813 | * init pipe | |
814 | */ | |
815 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
816 | pipe->priv = priv; | |
356db7ed KM |
817 | |
818 | usbhs_pipe_type(pipe) = | |
51f141a9 | 819 | pipe_configs[i].type & USB_ENDPOINT_XFERTYPE_MASK; |
f1407d5c KM |
820 | |
821 | dev_dbg(dev, "pipe %x\t: %s\n", | |
51f141a9 | 822 | i, usbhsp_pipe_name[pipe_configs[i].type]); |
f1407d5c KM |
823 | } |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | void usbhs_pipe_remove(struct usbhs_priv *priv) | |
829 | { | |
e8d548d5 | 830 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
831 | |
832 | kfree(info->pipe); | |
833 | } |