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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 | ||
f1407d5c KM |
47 | /* |
48 | * DCPCTR/PIPEnCTR functions | |
49 | */ | |
50 | static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
51 | { | |
e8d548d5 | 52 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
53 | int offset = usbhsp_addr_offset(pipe); |
54 | ||
e8d548d5 | 55 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
56 | usbhs_bset(priv, DCPCTR, mask, val); |
57 | else | |
58 | usbhs_bset(priv, PIPEnCTR + offset, mask, val); | |
59 | } | |
60 | ||
61 | static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe) | |
62 | { | |
e8d548d5 | 63 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
64 | int offset = usbhsp_addr_offset(pipe); |
65 | ||
e8d548d5 | 66 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
67 | return usbhs_read(priv, DCPCTR); |
68 | else | |
69 | return usbhs_read(priv, PIPEnCTR + offset); | |
70 | } | |
71 | ||
72 | /* | |
73 | * DCP/PIPE functions | |
74 | */ | |
75 | static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe, | |
76 | u16 dcp_reg, u16 pipe_reg, | |
77 | u16 mask, u16 val) | |
78 | { | |
e8d548d5 | 79 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c | 80 | |
e8d548d5 | 81 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
82 | usbhs_bset(priv, dcp_reg, mask, val); |
83 | else | |
84 | usbhs_bset(priv, pipe_reg, mask, val); | |
85 | } | |
86 | ||
ab330cf3 YS |
87 | static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe, |
88 | u16 dcp_reg, u16 pipe_reg) | |
89 | { | |
90 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
91 | ||
92 | if (usbhs_pipe_is_dcp(pipe)) | |
93 | return usbhs_read(priv, dcp_reg); | |
94 | else | |
95 | return usbhs_read(priv, pipe_reg); | |
96 | } | |
97 | ||
f1407d5c KM |
98 | /* |
99 | * DCPCFG/PIPECFG functions | |
100 | */ | |
101 | static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
102 | { | |
103 | __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val); | |
104 | } | |
105 | ||
ab330cf3 YS |
106 | static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe) |
107 | { | |
108 | return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG); | |
109 | } | |
110 | ||
1c90ee0b KM |
111 | /* |
112 | * PIPEnTRN/PIPEnTRE functions | |
113 | */ | |
114 | static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
115 | { | |
116 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
117 | struct device *dev = usbhs_priv_to_dev(priv); | |
118 | int num = usbhs_pipe_number(pipe); | |
119 | u16 reg; | |
120 | ||
121 | /* | |
122 | * It is impossible to calculate address, | |
123 | * since PIPEnTRN addresses were mapped randomly. | |
124 | */ | |
125 | #define CASE_PIPExTRN(a) \ | |
126 | case 0x ## a: \ | |
127 | reg = PIPE ## a ## TRN; \ | |
128 | break; | |
129 | ||
130 | switch (num) { | |
131 | CASE_PIPExTRN(1); | |
132 | CASE_PIPExTRN(2); | |
133 | CASE_PIPExTRN(3); | |
134 | CASE_PIPExTRN(4); | |
135 | CASE_PIPExTRN(5); | |
136 | CASE_PIPExTRN(B); | |
137 | CASE_PIPExTRN(C); | |
138 | CASE_PIPExTRN(D); | |
139 | CASE_PIPExTRN(E); | |
140 | CASE_PIPExTRN(F); | |
141 | CASE_PIPExTRN(9); | |
142 | CASE_PIPExTRN(A); | |
143 | default: | |
144 | dev_err(dev, "unknown pipe (%d)\n", num); | |
145 | return; | |
146 | } | |
147 | __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); | |
148 | } | |
149 | ||
150 | static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
151 | { | |
152 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
153 | struct device *dev = usbhs_priv_to_dev(priv); | |
154 | int num = usbhs_pipe_number(pipe); | |
155 | u16 reg; | |
156 | ||
157 | /* | |
158 | * It is impossible to calculate address, | |
159 | * since PIPEnTRE addresses were mapped randomly. | |
160 | */ | |
161 | #define CASE_PIPExTRE(a) \ | |
162 | case 0x ## a: \ | |
163 | reg = PIPE ## a ## TRE; \ | |
164 | break; | |
165 | ||
166 | switch (num) { | |
167 | CASE_PIPExTRE(1); | |
168 | CASE_PIPExTRE(2); | |
169 | CASE_PIPExTRE(3); | |
170 | CASE_PIPExTRE(4); | |
171 | CASE_PIPExTRE(5); | |
172 | CASE_PIPExTRE(B); | |
173 | CASE_PIPExTRE(C); | |
174 | CASE_PIPExTRE(D); | |
175 | CASE_PIPExTRE(E); | |
176 | CASE_PIPExTRE(F); | |
177 | CASE_PIPExTRE(9); | |
178 | CASE_PIPExTRE(A); | |
179 | default: | |
180 | dev_err(dev, "unknown pipe (%d)\n", num); | |
181 | return; | |
182 | } | |
183 | ||
184 | __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); | |
185 | } | |
186 | ||
f1407d5c KM |
187 | /* |
188 | * PIPEBUF | |
189 | */ | |
190 | static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
191 | { | |
e8d548d5 | 192 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
193 | return; |
194 | ||
195 | __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val); | |
196 | } | |
197 | ||
198 | /* | |
199 | * DCPMAXP/PIPEMAXP | |
200 | */ | |
201 | static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val) | |
202 | { | |
203 | __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val); | |
204 | } | |
205 | ||
f1407d5c KM |
206 | /* |
207 | * pipe control functions | |
208 | */ | |
209 | static void usbhsp_pipe_select(struct usbhs_pipe *pipe) | |
210 | { | |
e8d548d5 | 211 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
212 | |
213 | /* | |
214 | * On pipe, this is necessary before | |
215 | * accesses to below registers. | |
216 | * | |
217 | * PIPESEL : usbhsp_pipe_select | |
218 | * PIPECFG : usbhsp_pipe_cfg_xxx | |
219 | * PIPEBUF : usbhsp_pipe_buf_xxx | |
220 | * PIPEMAXP : usbhsp_pipe_maxp_xxx | |
221 | * PIPEPERI | |
222 | */ | |
223 | ||
224 | /* | |
225 | * if pipe is dcp, no pipe is selected. | |
226 | * it is no problem, because dcp have its register | |
227 | */ | |
228 | usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe)); | |
229 | } | |
230 | ||
231 | static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe) | |
232 | { | |
e8d548d5 | 233 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
f1407d5c KM |
234 | int timeout = 1024; |
235 | u16 val; | |
236 | ||
237 | /* | |
238 | * make sure.... | |
239 | * | |
240 | * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is | |
241 | * specified by the CURPIPE bits. | |
242 | * When changing the setting of this bit after changing | |
243 | * the PID bits for the selected pipe from BUF to NAK, | |
244 | * check that CSSTS = 0 and PBUSY = 0. | |
245 | */ | |
246 | ||
247 | /* | |
248 | * CURPIPE bit = 0 | |
249 | * | |
250 | * see also | |
251 | * "Operation" | |
252 | * - "Pipe Control" | |
253 | * - "Pipe Control Registers Switching Procedure" | |
254 | */ | |
255 | usbhs_write(priv, CFIFOSEL, 0); | |
e8d548d5 | 256 | usbhs_pipe_disable(pipe); |
f1407d5c KM |
257 | |
258 | do { | |
259 | val = usbhsp_pipectrl_get(pipe); | |
260 | val &= CSSTS | PID_MASK; | |
261 | if (!val) | |
262 | return 0; | |
263 | ||
264 | udelay(10); | |
265 | ||
266 | } while (timeout--); | |
267 | ||
f1407d5c KM |
268 | return -EBUSY; |
269 | } | |
270 | ||
e8d548d5 | 271 | int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) |
f1407d5c KM |
272 | { |
273 | u16 val; | |
274 | ||
275 | val = usbhsp_pipectrl_get(pipe); | |
276 | if (val & BSTS) | |
277 | return 0; | |
278 | ||
279 | return -EBUSY; | |
280 | } | |
281 | ||
282 | /* | |
283 | * PID ctrl | |
284 | */ | |
285 | static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) | |
286 | { | |
287 | u16 pid = usbhsp_pipectrl_get(pipe); | |
288 | ||
289 | pid &= PID_MASK; | |
290 | ||
291 | /* | |
292 | * see | |
293 | * "Pipe n Control Register" - "PID" | |
294 | */ | |
295 | switch (pid) { | |
296 | case PID_STALL11: | |
297 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
298 | /* fall-through */ | |
299 | case PID_STALL10: | |
300 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
301 | } | |
302 | } | |
303 | ||
e8d548d5 | 304 | void usbhs_pipe_disable(struct usbhs_pipe *pipe) |
f1407d5c | 305 | { |
c786e09c KM |
306 | int timeout = 1024; |
307 | u16 val; | |
308 | ||
f1407d5c KM |
309 | /* see "Pipe n Control Register" - "PID" */ |
310 | __usbhsp_pid_try_nak_if_stall(pipe); | |
311 | ||
312 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); | |
c786e09c KM |
313 | |
314 | do { | |
315 | val = usbhsp_pipectrl_get(pipe); | |
316 | val &= PBUSY; | |
317 | if (!val) | |
318 | break; | |
319 | ||
320 | udelay(10); | |
321 | } while (timeout--); | |
f1407d5c KM |
322 | } |
323 | ||
e8d548d5 | 324 | void usbhs_pipe_enable(struct usbhs_pipe *pipe) |
f1407d5c KM |
325 | { |
326 | /* see "Pipe n Control Register" - "PID" */ | |
327 | __usbhsp_pid_try_nak_if_stall(pipe); | |
328 | ||
329 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); | |
330 | } | |
331 | ||
e8d548d5 | 332 | void usbhs_pipe_stall(struct usbhs_pipe *pipe) |
f1407d5c KM |
333 | { |
334 | u16 pid = usbhsp_pipectrl_get(pipe); | |
335 | ||
336 | pid &= PID_MASK; | |
337 | ||
338 | /* | |
339 | * see | |
340 | * "Pipe n Control Register" - "PID" | |
341 | */ | |
342 | switch (pid) { | |
343 | case PID_NAK: | |
344 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); | |
345 | break; | |
346 | case PID_BUF: | |
347 | usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); | |
348 | break; | |
349 | } | |
350 | } | |
351 | ||
9cf1b06e KM |
352 | int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) |
353 | { | |
354 | u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; | |
355 | ||
356 | return (int)(pid == PID_STALL10 || pid == PID_STALL11); | |
357 | } | |
358 | ||
1c90ee0b KM |
359 | void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) |
360 | { | |
361 | if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
362 | return; | |
363 | ||
364 | /* | |
365 | * clear and disable transfer counter for IN/OUT pipe | |
366 | */ | |
367 | usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); | |
368 | ||
369 | /* | |
370 | * Only IN direction bulk pipe can use transfer count. | |
371 | * Without using this function, | |
372 | * received data will break if it was large data size. | |
373 | * see PIPEnTRN/PIPEnTRE for detail | |
374 | */ | |
375 | if (usbhs_pipe_is_dir_in(pipe)) { | |
376 | int maxp = usbhs_pipe_get_maxpacket(pipe); | |
377 | ||
378 | usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); | |
379 | usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ | |
380 | } | |
381 | } | |
382 | ||
383 | ||
f1407d5c KM |
384 | /* |
385 | * pipe setup | |
386 | */ | |
387 | static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe) | |
388 | { | |
389 | /* | |
390 | * only ISO / BULK pipe can use double buffer | |
391 | */ | |
356db7ed KM |
392 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) || |
393 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) | |
f1407d5c KM |
394 | return 1; |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, | |
f5aa889f KM |
400 | int is_host, |
401 | int dir_in) | |
f1407d5c KM |
402 | { |
403 | u16 type = 0; | |
404 | u16 bfre = 0; | |
405 | u16 dblb = 0; | |
406 | u16 cntmd = 0; | |
407 | u16 dir = 0; | |
408 | u16 epnum = 0; | |
409 | u16 shtnak = 0; | |
410 | u16 type_array[] = { | |
411 | [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, | |
412 | [USB_ENDPOINT_XFER_INT] = TYPE_INT, | |
413 | [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, | |
414 | }; | |
415 | int is_double = usbhsp_possible_double_buffer(pipe); | |
416 | ||
e8d548d5 | 417 | if (usbhs_pipe_is_dcp(pipe)) |
f1407d5c KM |
418 | return -EINVAL; |
419 | ||
420 | /* | |
421 | * PIPECFG | |
422 | * | |
423 | * see | |
424 | * - "Register Descriptions" - "PIPECFG" register | |
425 | * - "Features" - "Pipe configuration" | |
426 | * - "Operation" - "Pipe Control" | |
427 | */ | |
428 | ||
429 | /* TYPE */ | |
356db7ed | 430 | type = type_array[usbhs_pipe_type(pipe)]; |
f1407d5c KM |
431 | |
432 | /* BFRE */ | |
356db7ed KM |
433 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || |
434 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
f1407d5c KM |
435 | bfre = 0; /* FIXME */ |
436 | ||
437 | /* DBLB */ | |
356db7ed KM |
438 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || |
439 | usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) | |
f1407d5c KM |
440 | dblb = (is_double) ? DBLB : 0; |
441 | ||
442 | /* CNTMD */ | |
356db7ed | 443 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) |
f1407d5c KM |
444 | cntmd = 0; /* FIXME */ |
445 | ||
446 | /* DIR */ | |
f5aa889f | 447 | if (dir_in) |
ad6f2a8b | 448 | usbhsp_flags_set(pipe, IS_DIR_HOST); |
f1407d5c | 449 | |
14ff96e0 | 450 | if (!!is_host ^ !!dir_in) |
f1407d5c KM |
451 | dir |= DIR_OUT; |
452 | ||
ad6f2a8b KM |
453 | if (!dir) |
454 | usbhsp_flags_set(pipe, IS_DIR_IN); | |
455 | ||
f1407d5c | 456 | /* SHTNAK */ |
356db7ed | 457 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && |
f1407d5c KM |
458 | !dir) |
459 | shtnak = SHTNAK; | |
460 | ||
461 | /* EPNUM */ | |
f5aa889f | 462 | epnum = 0; /* see usbhs_pipe_config_update() */ |
f1407d5c KM |
463 | |
464 | return type | | |
465 | bfre | | |
466 | dblb | | |
467 | cntmd | | |
468 | dir | | |
469 | shtnak | | |
470 | epnum; | |
471 | } | |
472 | ||
f5aa889f | 473 | static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) |
f1407d5c | 474 | { |
e8d548d5 KM |
475 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
476 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); | |
f1407d5c KM |
477 | struct device *dev = usbhs_priv_to_dev(priv); |
478 | int pipe_num = usbhs_pipe_number(pipe); | |
479 | int is_double = usbhsp_possible_double_buffer(pipe); | |
480 | u16 buff_size; | |
481 | u16 bufnmb; | |
482 | u16 bufnmb_cnt; | |
483 | ||
484 | /* | |
485 | * PIPEBUF | |
486 | * | |
487 | * see | |
488 | * - "Register Descriptions" - "PIPEBUF" register | |
489 | * - "Features" - "Pipe configuration" | |
490 | * - "Operation" - "FIFO Buffer Memory" | |
491 | * - "Operation" - "Pipe Control" | |
492 | * | |
493 | * ex) if pipe6 - pipe9 are USB_ENDPOINT_XFER_INT (SH7724) | |
494 | * | |
495 | * BUFNMB: PIPE | |
496 | * 0: pipe0 (DCP 256byte) | |
497 | * 1: - | |
498 | * 2: - | |
499 | * 3: - | |
500 | * 4: pipe6 (INT 64byte) | |
501 | * 5: pipe7 (INT 64byte) | |
502 | * 6: pipe8 (INT 64byte) | |
503 | * 7: pipe9 (INT 64byte) | |
504 | * 8 - xx: free (for BULK, ISOC) | |
505 | */ | |
506 | ||
507 | /* | |
508 | * FIXME | |
509 | * | |
510 | * it doesn't have good buffer allocator | |
511 | * | |
512 | * DCP : 256 byte | |
513 | * BULK: 512 byte | |
514 | * INT : 64 byte | |
515 | * ISOC: 512 byte | |
516 | */ | |
356db7ed | 517 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL)) |
f1407d5c | 518 | buff_size = 256; |
356db7ed | 519 | else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) |
f1407d5c KM |
520 | buff_size = 64; |
521 | else | |
522 | buff_size = 512; | |
523 | ||
524 | /* change buff_size to register value */ | |
525 | bufnmb_cnt = (buff_size / 64) - 1; | |
526 | ||
527 | /* BUFNMB has been reserved for INT pipe | |
528 | * see above */ | |
356db7ed | 529 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) { |
f1407d5c KM |
530 | bufnmb = pipe_num - 2; |
531 | } else { | |
532 | bufnmb = info->bufnmb_last; | |
533 | info->bufnmb_last += bufnmb_cnt + 1; | |
534 | ||
535 | /* | |
536 | * double buffer | |
537 | */ | |
538 | if (is_double) | |
539 | info->bufnmb_last += bufnmb_cnt + 1; | |
540 | } | |
541 | ||
542 | dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", | |
543 | pipe_num, buff_size, bufnmb); | |
544 | ||
545 | return (0x1f & bufnmb_cnt) << 10 | | |
546 | (0xff & bufnmb) << 0; | |
547 | } | |
548 | ||
bc6fbf59 KM |
549 | void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, |
550 | u16 epnum, u16 maxp) | |
f5aa889f | 551 | { |
bc6fbf59 KM |
552 | if (devsel > 0xA) { |
553 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); | |
554 | struct device *dev = usbhs_priv_to_dev(priv); | |
555 | ||
556 | dev_err(dev, "devsel error %d\n", devsel); | |
557 | ||
558 | devsel = 0; | |
559 | } | |
560 | ||
f5aa889f KM |
561 | usbhsp_pipe_barrier(pipe); |
562 | ||
7fd097e7 KM |
563 | pipe->maxp = maxp; |
564 | ||
f5aa889f | 565 | usbhsp_pipe_select(pipe); |
bc6fbf59 KM |
566 | usbhsp_pipe_maxp_set(pipe, 0xFFFF, |
567 | (devsel << 12) | | |
568 | maxp); | |
f5aa889f KM |
569 | |
570 | if (!usbhs_pipe_is_dcp(pipe)) | |
571 | usbhsp_pipe_cfg_set(pipe, 0x000F, epnum); | |
572 | } | |
573 | ||
f1407d5c KM |
574 | /* |
575 | * pipe control | |
576 | */ | |
577 | int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) | |
578 | { | |
7fd097e7 KM |
579 | /* |
580 | * see | |
581 | * usbhs_pipe_config_update() | |
582 | * usbhs_dcp_malloc() | |
583 | */ | |
584 | return pipe->maxp; | |
f1407d5c KM |
585 | } |
586 | ||
587 | int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) | |
588 | { | |
589 | return usbhsp_flags_has(pipe, IS_DIR_IN); | |
590 | } | |
591 | ||
ad6f2a8b KM |
592 | int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) |
593 | { | |
594 | return usbhsp_flags_has(pipe, IS_DIR_HOST); | |
595 | } | |
596 | ||
8355b2b3 YS |
597 | int usbhs_pipe_is_running(struct usbhs_pipe *pipe) |
598 | { | |
599 | return usbhsp_flags_has(pipe, IS_RUNNING); | |
600 | } | |
601 | ||
602 | void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) | |
603 | { | |
604 | if (running) | |
605 | usbhsp_flags_set(pipe, IS_RUNNING); | |
606 | else | |
607 | usbhsp_flags_clr(pipe, IS_RUNNING); | |
608 | } | |
609 | ||
3edeee38 | 610 | void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) |
f1407d5c | 611 | { |
6e6db82b | 612 | u16 mask = (SQCLR | SQSET); |
3edeee38 KM |
613 | u16 val; |
614 | ||
615 | /* | |
616 | * sequence | |
617 | * 0 : data0 | |
618 | * 1 : data1 | |
619 | * -1 : no change | |
620 | */ | |
621 | switch (sequence) { | |
622 | case 0: | |
623 | val = SQCLR; | |
624 | break; | |
625 | case 1: | |
626 | val = SQSET; | |
627 | break; | |
628 | default: | |
629 | return; | |
630 | } | |
6e6db82b KM |
631 | |
632 | usbhsp_pipectrl_set(pipe, mask, val); | |
f1407d5c KM |
633 | } |
634 | ||
ab330cf3 YS |
635 | static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) |
636 | { | |
637 | return !!(usbhsp_pipectrl_get(pipe) & SQMON); | |
638 | } | |
639 | ||
08e6c611 KM |
640 | void usbhs_pipe_clear(struct usbhs_pipe *pipe) |
641 | { | |
cdeb7943 YS |
642 | if (usbhs_pipe_is_dcp(pipe)) { |
643 | usbhs_fifo_clear_dcp(pipe); | |
644 | } else { | |
645 | usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); | |
646 | usbhsp_pipectrl_set(pipe, ACLRM, 0); | |
647 | } | |
08e6c611 KM |
648 | } |
649 | ||
ab330cf3 YS |
650 | void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) |
651 | { | |
652 | int sequence; | |
653 | ||
654 | if (usbhs_pipe_is_dcp(pipe)) | |
655 | return; | |
656 | ||
657 | usbhsp_pipe_select(pipe); | |
658 | /* check if the driver needs to change the BFRE value */ | |
659 | if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) | |
660 | return; | |
661 | ||
662 | sequence = usbhs_pipe_get_data_sequence(pipe); | |
663 | usbhsp_pipe_cfg_set(pipe, BFRE, enable ? BFRE : 0); | |
664 | usbhs_pipe_clear(pipe); | |
665 | usbhs_pipe_data_sequence(pipe, sequence); | |
666 | } | |
667 | ||
f1407d5c KM |
668 | static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) |
669 | { | |
670 | struct usbhs_pipe *pos, *pipe; | |
671 | int i; | |
672 | ||
673 | /* | |
674 | * find target pipe | |
675 | */ | |
676 | pipe = NULL; | |
677 | usbhs_for_each_pipe_with_dcp(pos, priv, i) { | |
356db7ed | 678 | if (!usbhs_pipe_type_is(pos, type)) |
f1407d5c KM |
679 | continue; |
680 | if (usbhsp_flags_has(pos, IS_USED)) | |
681 | continue; | |
682 | ||
683 | pipe = pos; | |
684 | break; | |
685 | } | |
686 | ||
687 | if (!pipe) | |
688 | return NULL; | |
689 | ||
690 | /* | |
691 | * initialize pipe flags | |
692 | */ | |
693 | usbhsp_flags_init(pipe); | |
694 | usbhsp_flags_set(pipe, IS_USED); | |
695 | ||
696 | return pipe; | |
697 | } | |
698 | ||
dfb87b8b YS |
699 | static void usbhsp_put_pipe(struct usbhs_pipe *pipe) |
700 | { | |
701 | usbhsp_flags_init(pipe); | |
702 | } | |
703 | ||
4bd04811 | 704 | void usbhs_pipe_init(struct usbhs_priv *priv, |
e73a9891 | 705 | int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) |
f1407d5c | 706 | { |
e8d548d5 | 707 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
708 | struct usbhs_pipe *pipe; |
709 | int i; | |
710 | ||
711 | /* | |
712 | * FIXME | |
713 | * | |
714 | * driver needs good allocator. | |
715 | * | |
716 | * find first free buffer area (BULK, ISOC) | |
717 | * (DCP, INT area is fixed) | |
718 | * | |
719 | * buffer number 0 - 3 have been reserved for DCP | |
720 | * see | |
721 | * usbhsp_to_bufnmb | |
722 | */ | |
723 | info->bufnmb_last = 4; | |
724 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
356db7ed | 725 | if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) |
f1407d5c KM |
726 | info->bufnmb_last++; |
727 | ||
728 | usbhsp_flags_init(pipe); | |
d77e3f4e | 729 | pipe->fifo = NULL; |
f1407d5c | 730 | pipe->mod_private = NULL; |
6acb95d4 | 731 | INIT_LIST_HEAD(&pipe->list); |
45e13e6e | 732 | |
e8d548d5 | 733 | /* pipe force init */ |
08e6c611 | 734 | usbhs_pipe_clear(pipe); |
f1407d5c | 735 | } |
4bd04811 | 736 | |
e73a9891 | 737 | info->dma_map_ctrl = dma_map_ctrl; |
f1407d5c KM |
738 | } |
739 | ||
740 | struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, | |
f5aa889f KM |
741 | int endpoint_type, |
742 | int dir_in) | |
f1407d5c KM |
743 | { |
744 | struct device *dev = usbhs_priv_to_dev(priv); | |
f1407d5c | 745 | struct usbhs_pipe *pipe; |
0deb3e77 | 746 | int is_host = usbhs_mod_is_host(priv); |
f1407d5c | 747 | int ret; |
f5aa889f | 748 | u16 pipecfg, pipebuf; |
f1407d5c | 749 | |
f5aa889f | 750 | pipe = usbhsp_get_pipe(priv, endpoint_type); |
f429ea3f KM |
751 | if (!pipe) { |
752 | dev_err(dev, "can't get pipe (%s)\n", | |
f5aa889f | 753 | usbhsp_pipe_name[endpoint_type]); |
f1407d5c | 754 | return NULL; |
f429ea3f | 755 | } |
f1407d5c | 756 | |
6acb95d4 KM |
757 | INIT_LIST_HEAD(&pipe->list); |
758 | ||
e8d548d5 | 759 | usbhs_pipe_disable(pipe); |
f1407d5c KM |
760 | |
761 | /* make sure pipe is not busy */ | |
762 | ret = usbhsp_pipe_barrier(pipe); | |
763 | if (ret < 0) { | |
764 | dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); | |
765 | return NULL; | |
766 | } | |
767 | ||
f5aa889f KM |
768 | pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in); |
769 | pipebuf = usbhsp_setup_pipebuff(pipe); | |
f1407d5c | 770 | |
f1407d5c KM |
771 | usbhsp_pipe_select(pipe); |
772 | usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); | |
773 | usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); | |
6a054159 | 774 | usbhs_pipe_clear(pipe); |
f1407d5c | 775 | |
6e6db82b | 776 | usbhs_pipe_sequence_data0(pipe); |
f1407d5c KM |
777 | |
778 | dev_dbg(dev, "enable pipe %d : %s (%s)\n", | |
779 | usbhs_pipe_number(pipe), | |
3cf8ed12 | 780 | usbhs_pipe_name(pipe), |
f1407d5c KM |
781 | usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); |
782 | ||
f5aa889f KM |
783 | /* |
784 | * epnum / maxp are still not set to this pipe. | |
785 | * call usbhs_pipe_config_update() after this function !! | |
786 | */ | |
787 | ||
f1407d5c KM |
788 | return pipe; |
789 | } | |
790 | ||
dfb87b8b YS |
791 | void usbhs_pipe_free(struct usbhs_pipe *pipe) |
792 | { | |
793 | usbhsp_put_pipe(pipe); | |
794 | } | |
795 | ||
d77e3f4e KM |
796 | void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) |
797 | { | |
798 | if (pipe->fifo) | |
799 | pipe->fifo->pipe = NULL; | |
800 | ||
801 | pipe->fifo = fifo; | |
802 | ||
803 | if (fifo) | |
804 | fifo->pipe = pipe; | |
805 | } | |
806 | ||
807 | ||
f1407d5c KM |
808 | /* |
809 | * dcp control | |
810 | */ | |
811 | struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) | |
812 | { | |
813 | struct usbhs_pipe *pipe; | |
814 | ||
815 | pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); | |
816 | if (!pipe) | |
817 | return NULL; | |
818 | ||
f5aa889f KM |
819 | INIT_LIST_HEAD(&pipe->list); |
820 | ||
f1407d5c | 821 | /* |
f5aa889f | 822 | * call usbhs_pipe_config_update() after this function !! |
f1407d5c KM |
823 | */ |
824 | ||
f1407d5c KM |
825 | return pipe; |
826 | } | |
827 | ||
828 | void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) | |
829 | { | |
e2eddc61 KM |
830 | struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); |
831 | ||
e8d548d5 | 832 | WARN_ON(!usbhs_pipe_is_dcp(pipe)); |
f1407d5c | 833 | |
e8d548d5 | 834 | usbhs_pipe_enable(pipe); |
e2eddc61 KM |
835 | |
836 | if (!usbhs_mod_is_host(priv)) /* funconly */ | |
837 | usbhsp_pipectrl_set(pipe, CCPL, CCPL); | |
f1407d5c KM |
838 | } |
839 | ||
92352071 KM |
840 | void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) |
841 | { | |
842 | usbhsp_pipe_cfg_set(pipe, DIR_OUT, | |
843 | dir_out ? DIR_OUT : 0); | |
844 | } | |
845 | ||
f1407d5c KM |
846 | /* |
847 | * pipe module function | |
848 | */ | |
849 | int usbhs_pipe_probe(struct usbhs_priv *priv) | |
850 | { | |
e8d548d5 | 851 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
852 | struct usbhs_pipe *pipe; |
853 | struct device *dev = usbhs_priv_to_dev(priv); | |
854 | u32 *pipe_type = usbhs_get_dparam(priv, pipe_type); | |
855 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
856 | int i; | |
857 | ||
858 | /* This driver expects 1st pipe is DCP */ | |
859 | if (pipe_type[0] != USB_ENDPOINT_XFER_CONTROL) { | |
860 | dev_err(dev, "1st PIPE is not DCP\n"); | |
861 | return -EINVAL; | |
862 | } | |
863 | ||
864 | info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); | |
865 | if (!info->pipe) { | |
866 | dev_err(dev, "Could not allocate pipe\n"); | |
867 | return -ENOMEM; | |
868 | } | |
869 | ||
870 | info->size = pipe_size; | |
871 | ||
872 | /* | |
873 | * init pipe | |
874 | */ | |
875 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { | |
876 | pipe->priv = priv; | |
356db7ed KM |
877 | |
878 | usbhs_pipe_type(pipe) = | |
879 | pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK; | |
f1407d5c KM |
880 | |
881 | dev_dbg(dev, "pipe %x\t: %s\n", | |
882 | i, usbhsp_pipe_name[pipe_type[i]]); | |
883 | } | |
884 | ||
885 | return 0; | |
886 | } | |
887 | ||
888 | void usbhs_pipe_remove(struct usbhs_priv *priv) | |
889 | { | |
e8d548d5 | 890 | struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); |
f1407d5c KM |
891 | |
892 | kfree(info->pipe); | |
893 | } |