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 | 243 | int timeout = 1024; |
21a596c1 | 244 | u16 mask = usbhs_mod_is_host(priv) ? (CSSTS | PID_MASK) : PID_MASK; |
f1407d5c KM |
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 { | |
21a596c1 | 268 | if (!(usbhsp_pipectrl_get(pipe) & mask)) |
f1407d5c KM |
269 | return 0; |
270 | ||
271 | udelay(10); | |
272 | ||
273 | } while (timeout--); | |
274 | ||
f1407d5c KM |
275 | return -EBUSY; |
276 | } | |
277 | ||
e8d548d5 | 278 | int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) |
f1407d5c KM |
279 | { |
280 | u16 val; | |
281 | ||
282 | val = usbhsp_pipectrl_get(pipe); | |
283 | if (val & BSTS) | |
284 | return 0; | |
285 | ||
286 | return -EBUSY; | |
287 | } | |
288 | ||
289 | /* | |
290 | * PID ctrl | |
291 | */ | |
292 | static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) | |
293 | { | |
294 | u16 pid = usbhsp_pipectrl_get(pipe); | |
295 | ||
296 | pid &= PID_MASK; | |
297 | ||
298 | /* | |
299 | * see | |
300 | * "Pipe n Control Register" - "PID" | |
301 | */ | |
302 | switch (pid) { | |
303 | case PID_STALL11: | |
304 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
305 | /* fall-through */ | |
306 | case PID_STALL10: | |
307 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
308 | } | |
309 | } | |
310 | ||
e8d548d5 | 311 | void usbhs_pipe_disable(struct usbhs_pipe *pipe) |
f1407d5c | 312 | { |
c786e09c KM |
313 | int timeout = 1024; |
314 | u16 val; | |
315 | ||
f1407d5c KM |
316 | /* see "Pipe n Control Register" - "PID" */ |
317 | __usbhsp_pid_try_nak_if_stall(pipe); | |
318 | ||
319 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
c786e09c KM |
320 | |
321 | do { | |
322 | val = usbhsp_pipectrl_get(pipe); | |
323 | val &= PBUSY; | |
324 | if (!val) | |
325 | break; | |
326 | ||
327 | udelay(10); | |
328 | } while (timeout--); | |
f1407d5c KM |
329 | } |
330 | ||
e8d548d5 | 331 | void usbhs_pipe_enable(struct usbhs_pipe *pipe) |
f1407d5c KM |
332 | { |
333 | /* see "Pipe n Control Register" - "PID" */ | |
334 | __usbhsp_pid_try_nak_if_stall(pipe); | |
335 | ||
336 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); | |
337 | } | |
338 | ||
e8d548d5 | 339 | void usbhs_pipe_stall(struct usbhs_pipe *pipe) |
f1407d5c KM |
340 | { |
341 | u16 pid = usbhsp_pipectrl_get(pipe); | |
342 | ||
343 | pid &= PID_MASK; | |
344 | ||
345 | /* | |
346 | * see | |
347 | * "Pipe n Control Register" - "PID" | |
348 | */ | |
349 | switch (pid) { | |
350 | case PID_NAK: | |
351 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
352 | break; | |
353 | case PID_BUF: | |
354 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); | |
355 | break; | |
356 | } | |
357 | } | |
358 | ||
9cf1b06e KM |
359 | int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) |
360 | { | |
361 | u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; | |
362 | ||
363 | return (int)(pid == PID_STALL10 || pid == PID_STALL11); | |
364 | } | |
365 | ||
1c90ee0b KM |
366 | void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) |
367 | { | |
368 | if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
369 | return; | |
370 | ||
371 | /* | |
372 | * clear and disable transfer counter for IN/OUT pipe | |
373 | */ | |
374 | usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); | |
375 | ||
376 | /* | |
377 | * Only IN direction bulk pipe can use transfer count. | |
378 | * Without using this function, | |
379 | * received data will break if it was large data size. | |
380 | * see PIPEnTRN/PIPEnTRE for detail | |
381 | */ | |
382 | if (usbhs_pipe_is_dir_in(pipe)) { | |
383 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
384 | ||
385 | usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); | |
386 | usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ | |
387 | } | |
388 | } | |
389 | ||
390 | ||
f1407d5c KM |
391 | /* |
392 | * pipe setup | |
393 | */ | |
f1407d5c | 394 | static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, |
f5aa889f KM |
395 | int is_host, |
396 | int dir_in) | |
f1407d5c KM |
397 | { |
398 | u16 type = 0; | |
399 | u16 bfre = 0; | |
400 | u16 dblb = 0; | |
401 | u16 cntmd = 0; | |
402 | u16 dir = 0; | |
403 | u16 epnum = 0; | |
404 | u16 shtnak = 0; | |
405 | u16 type_array[] = { | |
406 | [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, | |
407 | [USB_ENDPOINT_XFER_INT] = TYPE_INT, | |
408 | [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, | |
409 | }; | |
f1407d5c | 410 | |
e8d548d5 | 411 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
412 | return -EINVAL; |
413 | ||
414 | /* | |
415 | * PIPECFG | |
416 | * | |
417 | * see | |
418 | * - "Register Descriptions" - "PIPECFG" register | |
419 | * - "Features" - "Pipe configuration" | |
420 | * - "Operation" - "Pipe Control" | |
421 | */ | |
422 | ||
423 | /* TYPE */ | |
356db7ed | 424 | type = type_array[usbhs_pipe_type(pipe)]; |
f1407d5c KM |
425 | |
426 | /* BFRE */ | |
356db7ed KM |
427 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || |
428 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
f1407d5c KM |
429 | bfre = 0; /* FIXME */ |
430 | ||
51f141a9 | 431 | /* DBLB: see usbhs_pipe_config_update() */ |
f1407d5c KM |
432 | |
433 | /* CNTMD */ | |
356db7ed | 434 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) |
f1407d5c KM |
435 | cntmd = 0; /* FIXME */ |
436 | ||
437 | /* DIR */ | |
f5aa889f | 438 | if (dir_in) |
ad6f2a8b | 439 | usbhsp_flags_set(pipe, IS_DIR_HOST); |
f1407d5c | 440 | |
14ff96e0 | 441 | if (!!is_host ^ !!dir_in) |
f1407d5c KM |
442 | dir |= DIR_OUT; |
443 | ||
ad6f2a8b KM |
444 | if (!dir) |
445 | usbhsp_flags_set(pipe, IS_DIR_IN); | |
446 | ||
f1407d5c | 447 | /* SHTNAK */ |
356db7ed | 448 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && |
f1407d5c KM |
449 | !dir) |
450 | shtnak = SHTNAK; | |
451 | ||
452 | /* EPNUM */ | |
f5aa889f | 453 | epnum = 0; /* see usbhs_pipe_config_update() */ |
f1407d5c KM |
454 | |
455 | return type | | |
456 | bfre | | |
457 | dblb | | |
458 | cntmd | | |
459 | dir | | |
460 | shtnak | | |
461 | epnum; | |
462 | } | |
463 | ||
f5aa889f | 464 | static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) |
f1407d5c | 465 | { |
e8d548d5 | 466 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
467 | struct device *dev = usbhs_priv_to_dev(priv); |
468 | int pipe_num = usbhs_pipe_number(pipe); | |
f1407d5c KM |
469 | u16 buff_size; |
470 | u16 bufnmb; | |
471 | u16 bufnmb_cnt; | |
51f141a9 YS |
472 | struct renesas_usbhs_driver_pipe_config *pipe_config = |
473 | usbhsp_get_pipe_config(priv, pipe_num); | |
f1407d5c KM |
474 | |
475 | /* | |
476 | * PIPEBUF | |
477 | * | |
478 | * see | |
479 | * - "Register Descriptions" - "PIPEBUF" register | |
480 | * - "Features" - "Pipe configuration" | |
481 | * - "Operation" - "FIFO Buffer Memory" | |
482 | * - "Operation" - "Pipe Control" | |
f1407d5c | 483 | */ |
51f141a9 YS |
484 | buff_size = pipe_config->bufsize; |
485 | bufnmb = pipe_config->bufnum; | |
f1407d5c KM |
486 | |
487 | /* change buff_size to register value */ | |
488 | bufnmb_cnt = (buff_size / 64) - 1; | |
489 | ||
f1407d5c KM |
490 | dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", |
491 | pipe_num, buff_size, bufnmb); | |
492 | ||
493 | return (0x1f & bufnmb_cnt) << 10 | | |
494 | (0xff & bufnmb) << 0; | |
495 | } | |
496 | ||
bc6fbf59 KM |
497 | void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, |
498 | u16 epnum, u16 maxp) | |
f5aa889f | 499 | { |
51f141a9 YS |
500 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
501 | int pipe_num = usbhs_pipe_number(pipe); | |
502 | struct renesas_usbhs_driver_pipe_config *pipe_config = | |
503 | usbhsp_get_pipe_config(priv, pipe_num); | |
504 | u16 dblb = pipe_config->double_buf ? DBLB : 0; | |
505 | ||
bc6fbf59 | 506 | if (devsel > 0xA) { |
bc6fbf59 KM |
507 | struct device *dev = usbhs_priv_to_dev(priv); |
508 | ||
509 | dev_err(dev, "devsel error %d\n", devsel); | |
510 | ||
511 | devsel = 0; | |
512 | } | |
513 | ||
f5aa889f KM |
514 | usbhsp_pipe_barrier(pipe); |
515 | ||
7fd097e7 KM |
516 | pipe->maxp = maxp; |
517 | ||
f5aa889f | 518 | usbhsp_pipe_select(pipe); |
bc6fbf59 KM |
519 | usbhsp_pipe_maxp_set(pipe, 0xFFFF, |
520 | (devsel << 12) | | |
521 | maxp); | |
f5aa889f KM |
522 | |
523 | if (!usbhs_pipe_is_dcp(pipe)) | |
51f141a9 | 524 | usbhsp_pipe_cfg_set(pipe, 0x000F | DBLB, epnum | dblb); |
f5aa889f KM |
525 | } |
526 | ||
f1407d5c KM |
527 | /* |
528 | * pipe control | |
529 | */ | |
530 | int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) | |
531 | { | |
7fd097e7 KM |
532 | /* |
533 | * see | |
534 | * usbhs_pipe_config_update() | |
535 | * usbhs_dcp_malloc() | |
536 | */ | |
537 | return pipe->maxp; | |
f1407d5c KM |
538 | } |
539 | ||
540 | int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) | |
541 | { | |
542 | return usbhsp_flags_has(pipe, IS_DIR_IN); | |
543 | } | |
544 | ||
ad6f2a8b KM |
545 | int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) |
546 | { | |
547 | return usbhsp_flags_has(pipe, IS_DIR_HOST); | |
548 | } | |
549 | ||
8355b2b3 YS |
550 | int usbhs_pipe_is_running(struct usbhs_pipe *pipe) |
551 | { | |
552 | return usbhsp_flags_has(pipe, IS_RUNNING); | |
553 | } | |
554 | ||
555 | void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) | |
556 | { | |
557 | if (running) | |
558 | usbhsp_flags_set(pipe, IS_RUNNING); | |
559 | else | |
560 | usbhsp_flags_clr(pipe, IS_RUNNING); | |
561 | } | |
562 | ||
3edeee38 | 563 | void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) |
f1407d5c | 564 | { |
6e6db82b | 565 | u16 mask = (SQCLR | SQSET); |
3edeee38 KM |
566 | u16 val; |
567 | ||
568 | /* | |
569 | * sequence | |
570 | * 0 : data0 | |
571 | * 1 : data1 | |
572 | * -1 : no change | |
573 | */ | |
574 | switch (sequence) { | |
575 | case 0: | |
576 | val = SQCLR; | |
577 | break; | |
578 | case 1: | |
579 | val = SQSET; | |
580 | break; | |
581 | default: | |
582 | return; | |
583 | } | |
6e6db82b KM |
584 | |
585 | usbhsp_pipectrl_set(pipe, mask, val); | |
f1407d5c KM |
586 | } |
587 | ||
ab330cf3 YS |
588 | static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) |
589 | { | |
590 | return !!(usbhsp_pipectrl_get(pipe) & SQMON); | |
591 | } | |
592 | ||
08e6c611 KM |
593 | void usbhs_pipe_clear(struct usbhs_pipe *pipe) |
594 | { | |
cdeb7943 YS |
595 | if (usbhs_pipe_is_dcp(pipe)) { |
596 | usbhs_fifo_clear_dcp(pipe); | |
597 | } else { | |
598 | usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); | |
599 | usbhsp_pipectrl_set(pipe, ACLRM, 0); | |
600 | } | |
08e6c611 KM |
601 | } |
602 | ||
ab330cf3 YS |
603 | void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) |
604 | { | |
605 | int sequence; | |
606 | ||
607 | if (usbhs_pipe_is_dcp(pipe)) | |
608 | return; | |
609 | ||
610 | usbhsp_pipe_select(pipe); | |
611 | /* check if the driver needs to change the BFRE value */ | |
612 | if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) | |
613 | return; | |
614 | ||
615 | sequence = usbhs_pipe_get_data_sequence(pipe); | |
616 | usbhsp_pipe_cfg_set(pipe, BFRE, enable ? BFRE : 0); | |
617 | usbhs_pipe_clear(pipe); | |
618 | usbhs_pipe_data_sequence(pipe, sequence); | |
619 | } | |
620 | ||
f1407d5c KM |
621 | static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) |
622 | { | |
623 | struct usbhs_pipe *pos, *pipe; | |
624 | int i; | |
625 | ||
626 | /* | |
627 | * find target pipe | |
628 | */ | |
629 | pipe = NULL; | |
630 | usbhs_for_each_pipe_with_dcp(pos, priv, i) { | |
356db7ed | 631 | if (!usbhs_pipe_type_is(pos, type)) |
f1407d5c KM |
632 | continue; |
633 | if (usbhsp_flags_has(pos, IS_USED)) | |
634 | continue; | |
635 | ||
636 | pipe = pos; | |
637 | break; | |
638 | } | |
639 | ||
640 | if (!pipe) | |
641 | return NULL; | |
642 | ||
643 | /* | |
644 | * initialize pipe flags | |
645 | */ | |
646 | usbhsp_flags_init(pipe); | |
647 | usbhsp_flags_set(pipe, IS_USED); | |
648 | ||
649 | return pipe; | |
650 | } | |
651 | ||
dfb87b8b YS |
652 | static void usbhsp_put_pipe(struct usbhs_pipe *pipe) |
653 | { | |
654 | usbhsp_flags_init(pipe); | |
655 | } | |
656 | ||
4bd04811 | 657 | void usbhs_pipe_init(struct usbhs_priv *priv, |
e73a9891 | 658 | int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) |
f1407d5c | 659 | { |
e8d548d5 | 660 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
661 | struct usbhs_pipe *pipe; |
662 | int i; | |
663 | ||
f1407d5c | 664 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { |
f1407d5c | 665 | usbhsp_flags_init(pipe); |
d77e3f4e | 666 | pipe->fifo = NULL; |
f1407d5c | 667 | pipe->mod_private = NULL; |
6acb95d4 | 668 | INIT_LIST_HEAD(&pipe->list); |
45e13e6e | 669 | |
e8d548d5 | 670 | /* pipe force init */ |
08e6c611 | 671 | usbhs_pipe_clear(pipe); |
f1407d5c | 672 | } |
4bd04811 | 673 | |
e73a9891 | 674 | info->dma_map_ctrl = dma_map_ctrl; |
f1407d5c KM |
675 | } |
676 | ||
677 | struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, | |
f5aa889f KM |
678 | int endpoint_type, |
679 | int dir_in) | |
f1407d5c KM |
680 | { |
681 | struct device *dev = usbhs_priv_to_dev(priv); | |
f1407d5c | 682 | struct usbhs_pipe *pipe; |
0deb3e77 | 683 | int is_host = usbhs_mod_is_host(priv); |
f1407d5c | 684 | int ret; |
f5aa889f | 685 | u16 pipecfg, pipebuf; |
f1407d5c | 686 | |
f5aa889f | 687 | pipe = usbhsp_get_pipe(priv, endpoint_type); |
f429ea3f KM |
688 | if (!pipe) { |
689 | dev_err(dev, "can't get pipe (%s)\n", | |
f5aa889f | 690 | usbhsp_pipe_name[endpoint_type]); |
f1407d5c | 691 | return NULL; |
f429ea3f | 692 | } |
f1407d5c | 693 | |
6acb95d4 KM |
694 | INIT_LIST_HEAD(&pipe->list); |
695 | ||
e8d548d5 | 696 | usbhs_pipe_disable(pipe); |
f1407d5c KM |
697 | |
698 | /* make sure pipe is not busy */ | |
699 | ret = usbhsp_pipe_barrier(pipe); | |
700 | if (ret < 0) { | |
701 | dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); | |
702 | return NULL; | |
703 | } | |
704 | ||
f5aa889f KM |
705 | pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in); |
706 | pipebuf = usbhsp_setup_pipebuff(pipe); | |
f1407d5c | 707 | |
f1407d5c KM |
708 | usbhsp_pipe_select(pipe); |
709 | usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); | |
710 | usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); | |
6a054159 | 711 | usbhs_pipe_clear(pipe); |
f1407d5c | 712 | |
6e6db82b | 713 | usbhs_pipe_sequence_data0(pipe); |
f1407d5c KM |
714 | |
715 | dev_dbg(dev, "enable pipe %d : %s (%s)\n", | |
716 | usbhs_pipe_number(pipe), | |
3cf8ed12 | 717 | usbhs_pipe_name(pipe), |
f1407d5c KM |
718 | usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); |
719 | ||
f5aa889f KM |
720 | /* |
721 | * epnum / maxp are still not set to this pipe. | |
722 | * call usbhs_pipe_config_update() after this function !! | |
723 | */ | |
724 | ||
f1407d5c KM |
725 | return pipe; |
726 | } | |
727 | ||
dfb87b8b YS |
728 | void usbhs_pipe_free(struct usbhs_pipe *pipe) |
729 | { | |
730 | usbhsp_put_pipe(pipe); | |
731 | } | |
732 | ||
d77e3f4e KM |
733 | void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) |
734 | { | |
735 | if (pipe->fifo) | |
736 | pipe->fifo->pipe = NULL; | |
737 | ||
738 | pipe->fifo = fifo; | |
739 | ||
740 | if (fifo) | |
741 | fifo->pipe = pipe; | |
742 | } | |
743 | ||
744 | ||
f1407d5c KM |
745 | /* |
746 | * dcp control | |
747 | */ | |
748 | struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) | |
749 | { | |
750 | struct usbhs_pipe *pipe; | |
751 | ||
752 | pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); | |
753 | if (!pipe) | |
754 | return NULL; | |
755 | ||
f5aa889f KM |
756 | INIT_LIST_HEAD(&pipe->list); |
757 | ||
f1407d5c | 758 | /* |
f5aa889f | 759 | * call usbhs_pipe_config_update() after this function !! |
f1407d5c KM |
760 | */ |
761 | ||
f1407d5c KM |
762 | return pipe; |
763 | } | |
764 | ||
765 | void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) | |
766 | { | |
e2eddc61 KM |
767 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
768 | ||
e8d548d5 | 769 | WARN_ON(!usbhs_pipe_is_dcp(pipe)); |
f1407d5c | 770 | |
e8d548d5 | 771 | usbhs_pipe_enable(pipe); |
e2eddc61 KM |
772 | |
773 | if (!usbhs_mod_is_host(priv)) /* funconly */ | |
774 | usbhsp_pipectrl_set(pipe, CCPL, CCPL); | |
f1407d5c KM |
775 | } |
776 | ||
92352071 KM |
777 | void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) |
778 | { | |
779 | usbhsp_pipe_cfg_set(pipe, DIR_OUT, | |
780 | dir_out ? DIR_OUT : 0); | |
781 | } | |
782 | ||
f1407d5c KM |
783 | /* |
784 | * pipe module function | |
785 | */ | |
786 | int usbhs_pipe_probe(struct usbhs_priv *priv) | |
787 | { | |
e8d548d5 | 788 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
789 | struct usbhs_pipe *pipe; |
790 | struct device *dev = usbhs_priv_to_dev(priv); | |
51f141a9 YS |
791 | struct renesas_usbhs_driver_pipe_config *pipe_configs = |
792 | usbhs_get_dparam(priv, pipe_configs); | |
f1407d5c KM |
793 | int pipe_size = usbhs_get_dparam(priv, pipe_size); |
794 | int i; | |
795 | ||
796 | /* This driver expects 1st pipe is DCP */ | |
51f141a9 | 797 | if (pipe_configs[0].type != USB_ENDPOINT_XFER_CONTROL) { |
f1407d5c KM |
798 | dev_err(dev, "1st PIPE is not DCP\n"); |
799 | return -EINVAL; | |
800 | } | |
801 | ||
802 | info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); | |
803 | if (!info->pipe) { | |
804 | dev_err(dev, "Could not allocate pipe\n"); | |
805 | return -ENOMEM; | |
806 | } | |
807 | ||
808 | info->size = pipe_size; | |
809 | ||
810 | /* | |
811 | * init pipe | |
812 | */ | |
813 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
814 | pipe->priv = priv; | |
356db7ed KM |
815 | |
816 | usbhs_pipe_type(pipe) = | |
51f141a9 | 817 | pipe_configs[i].type & USB_ENDPOINT_XFERTYPE_MASK; |
f1407d5c KM |
818 | |
819 | dev_dbg(dev, "pipe %x\t: %s\n", | |
51f141a9 | 820 | i, usbhsp_pipe_name[pipe_configs[i].type]); |
f1407d5c KM |
821 | } |
822 | ||
823 | return 0; | |
824 | } | |
825 | ||
826 | void usbhs_pipe_remove(struct usbhs_priv *priv) | |
827 | { | |
e8d548d5 | 828 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
829 | |
830 | kfree(info->pipe); | |
831 | } |