1 /* 2 * Renesas USB driver 3 * 4 * Copyright (C) 2011 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * This program is distributed in the hope that it will be useful, 8 * but WITHOUT ANY WARRANTY; without even the implied warranty of 9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 * GNU General Public License for more details. 11 * 12 * You should have received a copy of the GNU General Public License 13 * along with this program; if not, write to the Free Software 14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 15 * 16 */ 17 #include <linux/delay.h> 18 #include <linux/slab.h> 19 #include "common.h" 20 #include "pipe.h" 21 22 /* 23 * macros 24 */ 25 #define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2) 26 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 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 42 char *usbhs_pipe_name(struct usbhs_pipe *pipe) 43 { 44 return usbhsp_pipe_name[usbhs_pipe_type(pipe)]; 45 } 46 47 /* 48 * DCPCTR/PIPEnCTR functions 49 */ 50 static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 51 { 52 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 53 int offset = usbhsp_addr_offset(pipe); 54 55 if (usbhs_pipe_is_dcp(pipe)) 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 { 63 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 64 int offset = usbhsp_addr_offset(pipe); 65 66 if (usbhs_pipe_is_dcp(pipe)) 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 { 79 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 80 81 if (usbhs_pipe_is_dcp(pipe)) 82 usbhs_bset(priv, dcp_reg, mask, val); 83 else 84 usbhs_bset(priv, pipe_reg, mask, val); 85 } 86 87 /* 88 * DCPCFG/PIPECFG functions 89 */ 90 static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 91 { 92 __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val); 93 } 94 95 /* 96 * PIPEnTRN/PIPEnTRE functions 97 */ 98 static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 99 { 100 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 101 struct device *dev = usbhs_priv_to_dev(priv); 102 int num = usbhs_pipe_number(pipe); 103 u16 reg; 104 105 /* 106 * It is impossible to calculate address, 107 * since PIPEnTRN addresses were mapped randomly. 108 */ 109 #define CASE_PIPExTRN(a) \ 110 case 0x ## a: \ 111 reg = PIPE ## a ## TRN; \ 112 break; 113 114 switch (num) { 115 CASE_PIPExTRN(1); 116 CASE_PIPExTRN(2); 117 CASE_PIPExTRN(3); 118 CASE_PIPExTRN(4); 119 CASE_PIPExTRN(5); 120 CASE_PIPExTRN(B); 121 CASE_PIPExTRN(C); 122 CASE_PIPExTRN(D); 123 CASE_PIPExTRN(E); 124 CASE_PIPExTRN(F); 125 CASE_PIPExTRN(9); 126 CASE_PIPExTRN(A); 127 default: 128 dev_err(dev, "unknown pipe (%d)\n", num); 129 return; 130 } 131 __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); 132 } 133 134 static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 135 { 136 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 137 struct device *dev = usbhs_priv_to_dev(priv); 138 int num = usbhs_pipe_number(pipe); 139 u16 reg; 140 141 /* 142 * It is impossible to calculate address, 143 * since PIPEnTRE addresses were mapped randomly. 144 */ 145 #define CASE_PIPExTRE(a) \ 146 case 0x ## a: \ 147 reg = PIPE ## a ## TRE; \ 148 break; 149 150 switch (num) { 151 CASE_PIPExTRE(1); 152 CASE_PIPExTRE(2); 153 CASE_PIPExTRE(3); 154 CASE_PIPExTRE(4); 155 CASE_PIPExTRE(5); 156 CASE_PIPExTRE(B); 157 CASE_PIPExTRE(C); 158 CASE_PIPExTRE(D); 159 CASE_PIPExTRE(E); 160 CASE_PIPExTRE(F); 161 CASE_PIPExTRE(9); 162 CASE_PIPExTRE(A); 163 default: 164 dev_err(dev, "unknown pipe (%d)\n", num); 165 return; 166 } 167 168 __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); 169 } 170 171 /* 172 * PIPEBUF 173 */ 174 static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 175 { 176 if (usbhs_pipe_is_dcp(pipe)) 177 return; 178 179 __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val); 180 } 181 182 /* 183 * DCPMAXP/PIPEMAXP 184 */ 185 static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 186 { 187 __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val); 188 } 189 190 /* 191 * pipe control functions 192 */ 193 static void usbhsp_pipe_select(struct usbhs_pipe *pipe) 194 { 195 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 196 197 /* 198 * On pipe, this is necessary before 199 * accesses to below registers. 200 * 201 * PIPESEL : usbhsp_pipe_select 202 * PIPECFG : usbhsp_pipe_cfg_xxx 203 * PIPEBUF : usbhsp_pipe_buf_xxx 204 * PIPEMAXP : usbhsp_pipe_maxp_xxx 205 * PIPEPERI 206 */ 207 208 /* 209 * if pipe is dcp, no pipe is selected. 210 * it is no problem, because dcp have its register 211 */ 212 usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe)); 213 } 214 215 static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe) 216 { 217 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 218 int timeout = 1024; 219 u16 val; 220 221 /* 222 * make sure.... 223 * 224 * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is 225 * specified by the CURPIPE bits. 226 * When changing the setting of this bit after changing 227 * the PID bits for the selected pipe from BUF to NAK, 228 * check that CSSTS = 0 and PBUSY = 0. 229 */ 230 231 /* 232 * CURPIPE bit = 0 233 * 234 * see also 235 * "Operation" 236 * - "Pipe Control" 237 * - "Pipe Control Registers Switching Procedure" 238 */ 239 usbhs_write(priv, CFIFOSEL, 0); 240 usbhs_pipe_disable(pipe); 241 242 do { 243 val = usbhsp_pipectrl_get(pipe); 244 val &= CSSTS | PID_MASK; 245 if (!val) 246 return 0; 247 248 udelay(10); 249 250 } while (timeout--); 251 252 return -EBUSY; 253 } 254 255 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) 256 { 257 u16 val; 258 259 val = usbhsp_pipectrl_get(pipe); 260 if (val & BSTS) 261 return 0; 262 263 return -EBUSY; 264 } 265 266 /* 267 * PID ctrl 268 */ 269 static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) 270 { 271 u16 pid = usbhsp_pipectrl_get(pipe); 272 273 pid &= PID_MASK; 274 275 /* 276 * see 277 * "Pipe n Control Register" - "PID" 278 */ 279 switch (pid) { 280 case PID_STALL11: 281 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); 282 /* fall-through */ 283 case PID_STALL10: 284 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); 285 } 286 } 287 288 void usbhs_pipe_disable(struct usbhs_pipe *pipe) 289 { 290 int timeout = 1024; 291 u16 val; 292 293 /* see "Pipe n Control Register" - "PID" */ 294 __usbhsp_pid_try_nak_if_stall(pipe); 295 296 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); 297 298 do { 299 val = usbhsp_pipectrl_get(pipe); 300 val &= PBUSY; 301 if (!val) 302 break; 303 304 udelay(10); 305 } while (timeout--); 306 } 307 308 void usbhs_pipe_enable(struct usbhs_pipe *pipe) 309 { 310 /* see "Pipe n Control Register" - "PID" */ 311 __usbhsp_pid_try_nak_if_stall(pipe); 312 313 usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); 314 } 315 316 void usbhs_pipe_stall(struct usbhs_pipe *pipe) 317 { 318 u16 pid = usbhsp_pipectrl_get(pipe); 319 320 pid &= PID_MASK; 321 322 /* 323 * see 324 * "Pipe n Control Register" - "PID" 325 */ 326 switch (pid) { 327 case PID_NAK: 328 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); 329 break; 330 case PID_BUF: 331 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); 332 break; 333 } 334 } 335 336 int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) 337 { 338 u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; 339 340 return (int)(pid == PID_STALL10 || pid == PID_STALL11); 341 } 342 343 void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) 344 { 345 if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 346 return; 347 348 /* 349 * clear and disable transfer counter for IN/OUT pipe 350 */ 351 usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); 352 353 /* 354 * Only IN direction bulk pipe can use transfer count. 355 * Without using this function, 356 * received data will break if it was large data size. 357 * see PIPEnTRN/PIPEnTRE for detail 358 */ 359 if (usbhs_pipe_is_dir_in(pipe)) { 360 int maxp = usbhs_pipe_get_maxpacket(pipe); 361 362 usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); 363 usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ 364 } 365 } 366 367 368 /* 369 * pipe setup 370 */ 371 static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe) 372 { 373 /* 374 * only ISO / BULK pipe can use double buffer 375 */ 376 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) || 377 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) 378 return 1; 379 380 return 0; 381 } 382 383 static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, 384 int is_host, 385 int dir_in) 386 { 387 u16 type = 0; 388 u16 bfre = 0; 389 u16 dblb = 0; 390 u16 cntmd = 0; 391 u16 dir = 0; 392 u16 epnum = 0; 393 u16 shtnak = 0; 394 u16 type_array[] = { 395 [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, 396 [USB_ENDPOINT_XFER_INT] = TYPE_INT, 397 [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, 398 }; 399 int is_double = usbhsp_possible_double_buffer(pipe); 400 401 if (usbhs_pipe_is_dcp(pipe)) 402 return -EINVAL; 403 404 /* 405 * PIPECFG 406 * 407 * see 408 * - "Register Descriptions" - "PIPECFG" register 409 * - "Features" - "Pipe configuration" 410 * - "Operation" - "Pipe Control" 411 */ 412 413 /* TYPE */ 414 type = type_array[usbhs_pipe_type(pipe)]; 415 416 /* BFRE */ 417 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || 418 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 419 bfre = 0; /* FIXME */ 420 421 /* DBLB */ 422 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || 423 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 424 dblb = (is_double) ? DBLB : 0; 425 426 /* CNTMD */ 427 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 428 cntmd = 0; /* FIXME */ 429 430 /* DIR */ 431 if (dir_in) 432 usbhsp_flags_set(pipe, IS_DIR_HOST); 433 434 if (!!is_host ^ !!dir_in) 435 dir |= DIR_OUT; 436 437 if (!dir) 438 usbhsp_flags_set(pipe, IS_DIR_IN); 439 440 /* SHTNAK */ 441 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && 442 !dir) 443 shtnak = SHTNAK; 444 445 /* EPNUM */ 446 epnum = 0; /* see usbhs_pipe_config_update() */ 447 448 return type | 449 bfre | 450 dblb | 451 cntmd | 452 dir | 453 shtnak | 454 epnum; 455 } 456 457 static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) 458 { 459 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 460 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 461 struct device *dev = usbhs_priv_to_dev(priv); 462 int pipe_num = usbhs_pipe_number(pipe); 463 int is_double = usbhsp_possible_double_buffer(pipe); 464 u16 buff_size; 465 u16 bufnmb; 466 u16 bufnmb_cnt; 467 468 /* 469 * PIPEBUF 470 * 471 * see 472 * - "Register Descriptions" - "PIPEBUF" register 473 * - "Features" - "Pipe configuration" 474 * - "Operation" - "FIFO Buffer Memory" 475 * - "Operation" - "Pipe Control" 476 * 477 * ex) if pipe6 - pipe9 are USB_ENDPOINT_XFER_INT (SH7724) 478 * 479 * BUFNMB: PIPE 480 * 0: pipe0 (DCP 256byte) 481 * 1: - 482 * 2: - 483 * 3: - 484 * 4: pipe6 (INT 64byte) 485 * 5: pipe7 (INT 64byte) 486 * 6: pipe8 (INT 64byte) 487 * 7: pipe9 (INT 64byte) 488 * 8 - xx: free (for BULK, ISOC) 489 */ 490 491 /* 492 * FIXME 493 * 494 * it doesn't have good buffer allocator 495 * 496 * DCP : 256 byte 497 * BULK: 512 byte 498 * INT : 64 byte 499 * ISOC: 512 byte 500 */ 501 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL)) 502 buff_size = 256; 503 else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) 504 buff_size = 64; 505 else 506 buff_size = 512; 507 508 /* change buff_size to register value */ 509 bufnmb_cnt = (buff_size / 64) - 1; 510 511 /* BUFNMB has been reserved for INT pipe 512 * see above */ 513 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) { 514 bufnmb = pipe_num - 2; 515 } else { 516 bufnmb = info->bufnmb_last; 517 info->bufnmb_last += bufnmb_cnt + 1; 518 519 /* 520 * double buffer 521 */ 522 if (is_double) 523 info->bufnmb_last += bufnmb_cnt + 1; 524 } 525 526 dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", 527 pipe_num, buff_size, bufnmb); 528 529 return (0x1f & bufnmb_cnt) << 10 | 530 (0xff & bufnmb) << 0; 531 } 532 533 void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, 534 u16 epnum, u16 maxp) 535 { 536 if (devsel > 0xA) { 537 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 538 struct device *dev = usbhs_priv_to_dev(priv); 539 540 dev_err(dev, "devsel error %d\n", devsel); 541 542 devsel = 0; 543 } 544 545 usbhsp_pipe_barrier(pipe); 546 547 pipe->maxp = maxp; 548 549 usbhsp_pipe_select(pipe); 550 usbhsp_pipe_maxp_set(pipe, 0xFFFF, 551 (devsel << 12) | 552 maxp); 553 554 if (!usbhs_pipe_is_dcp(pipe)) 555 usbhsp_pipe_cfg_set(pipe, 0x000F, epnum); 556 } 557 558 /* 559 * pipe control 560 */ 561 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) 562 { 563 /* 564 * see 565 * usbhs_pipe_config_update() 566 * usbhs_dcp_malloc() 567 */ 568 return pipe->maxp; 569 } 570 571 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) 572 { 573 return usbhsp_flags_has(pipe, IS_DIR_IN); 574 } 575 576 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) 577 { 578 return usbhsp_flags_has(pipe, IS_DIR_HOST); 579 } 580 581 int usbhs_pipe_is_running(struct usbhs_pipe *pipe) 582 { 583 return usbhsp_flags_has(pipe, IS_RUNNING); 584 } 585 586 void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) 587 { 588 if (running) 589 usbhsp_flags_set(pipe, IS_RUNNING); 590 else 591 usbhsp_flags_clr(pipe, IS_RUNNING); 592 } 593 594 void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) 595 { 596 u16 mask = (SQCLR | SQSET); 597 u16 val; 598 599 /* 600 * sequence 601 * 0 : data0 602 * 1 : data1 603 * -1 : no change 604 */ 605 switch (sequence) { 606 case 0: 607 val = SQCLR; 608 break; 609 case 1: 610 val = SQSET; 611 break; 612 default: 613 return; 614 } 615 616 usbhsp_pipectrl_set(pipe, mask, val); 617 } 618 619 void usbhs_pipe_clear(struct usbhs_pipe *pipe) 620 { 621 if (usbhs_pipe_is_dcp(pipe)) { 622 usbhs_fifo_clear_dcp(pipe); 623 } else { 624 usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); 625 usbhsp_pipectrl_set(pipe, ACLRM, 0); 626 } 627 } 628 629 static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) 630 { 631 struct usbhs_pipe *pos, *pipe; 632 int i; 633 634 /* 635 * find target pipe 636 */ 637 pipe = NULL; 638 usbhs_for_each_pipe_with_dcp(pos, priv, i) { 639 if (!usbhs_pipe_type_is(pos, type)) 640 continue; 641 if (usbhsp_flags_has(pos, IS_USED)) 642 continue; 643 644 pipe = pos; 645 break; 646 } 647 648 if (!pipe) 649 return NULL; 650 651 /* 652 * initialize pipe flags 653 */ 654 usbhsp_flags_init(pipe); 655 usbhsp_flags_set(pipe, IS_USED); 656 657 return pipe; 658 } 659 660 static void usbhsp_put_pipe(struct usbhs_pipe *pipe) 661 { 662 usbhsp_flags_init(pipe); 663 } 664 665 void usbhs_pipe_init(struct usbhs_priv *priv, 666 int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) 667 { 668 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 669 struct usbhs_pipe *pipe; 670 int i; 671 672 /* 673 * FIXME 674 * 675 * driver needs good allocator. 676 * 677 * find first free buffer area (BULK, ISOC) 678 * (DCP, INT area is fixed) 679 * 680 * buffer number 0 - 3 have been reserved for DCP 681 * see 682 * usbhsp_to_bufnmb 683 */ 684 info->bufnmb_last = 4; 685 usbhs_for_each_pipe_with_dcp(pipe, priv, i) { 686 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) 687 info->bufnmb_last++; 688 689 usbhsp_flags_init(pipe); 690 pipe->fifo = NULL; 691 pipe->mod_private = NULL; 692 INIT_LIST_HEAD(&pipe->list); 693 694 /* pipe force init */ 695 usbhs_pipe_clear(pipe); 696 } 697 698 info->dma_map_ctrl = dma_map_ctrl; 699 } 700 701 struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, 702 int endpoint_type, 703 int dir_in) 704 { 705 struct device *dev = usbhs_priv_to_dev(priv); 706 struct usbhs_pipe *pipe; 707 int is_host = usbhs_mod_is_host(priv); 708 int ret; 709 u16 pipecfg, pipebuf; 710 711 pipe = usbhsp_get_pipe(priv, endpoint_type); 712 if (!pipe) { 713 dev_err(dev, "can't get pipe (%s)\n", 714 usbhsp_pipe_name[endpoint_type]); 715 return NULL; 716 } 717 718 INIT_LIST_HEAD(&pipe->list); 719 720 usbhs_pipe_disable(pipe); 721 722 /* make sure pipe is not busy */ 723 ret = usbhsp_pipe_barrier(pipe); 724 if (ret < 0) { 725 dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); 726 return NULL; 727 } 728 729 pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in); 730 pipebuf = usbhsp_setup_pipebuff(pipe); 731 732 usbhsp_pipe_select(pipe); 733 usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); 734 usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); 735 usbhs_pipe_clear(pipe); 736 737 usbhs_pipe_sequence_data0(pipe); 738 739 dev_dbg(dev, "enable pipe %d : %s (%s)\n", 740 usbhs_pipe_number(pipe), 741 usbhs_pipe_name(pipe), 742 usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); 743 744 /* 745 * epnum / maxp are still not set to this pipe. 746 * call usbhs_pipe_config_update() after this function !! 747 */ 748 749 return pipe; 750 } 751 752 void usbhs_pipe_free(struct usbhs_pipe *pipe) 753 { 754 usbhsp_put_pipe(pipe); 755 } 756 757 void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) 758 { 759 if (pipe->fifo) 760 pipe->fifo->pipe = NULL; 761 762 pipe->fifo = fifo; 763 764 if (fifo) 765 fifo->pipe = pipe; 766 } 767 768 769 /* 770 * dcp control 771 */ 772 struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) 773 { 774 struct usbhs_pipe *pipe; 775 776 pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); 777 if (!pipe) 778 return NULL; 779 780 INIT_LIST_HEAD(&pipe->list); 781 782 /* 783 * call usbhs_pipe_config_update() after this function !! 784 */ 785 786 return pipe; 787 } 788 789 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) 790 { 791 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 792 793 WARN_ON(!usbhs_pipe_is_dcp(pipe)); 794 795 usbhs_pipe_enable(pipe); 796 797 if (!usbhs_mod_is_host(priv)) /* funconly */ 798 usbhsp_pipectrl_set(pipe, CCPL, CCPL); 799 } 800 801 void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) 802 { 803 usbhsp_pipe_cfg_set(pipe, DIR_OUT, 804 dir_out ? DIR_OUT : 0); 805 } 806 807 /* 808 * pipe module function 809 */ 810 int usbhs_pipe_probe(struct usbhs_priv *priv) 811 { 812 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 813 struct usbhs_pipe *pipe; 814 struct device *dev = usbhs_priv_to_dev(priv); 815 u32 *pipe_type = usbhs_get_dparam(priv, pipe_type); 816 int pipe_size = usbhs_get_dparam(priv, pipe_size); 817 int i; 818 819 /* This driver expects 1st pipe is DCP */ 820 if (pipe_type[0] != USB_ENDPOINT_XFER_CONTROL) { 821 dev_err(dev, "1st PIPE is not DCP\n"); 822 return -EINVAL; 823 } 824 825 info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); 826 if (!info->pipe) { 827 dev_err(dev, "Could not allocate pipe\n"); 828 return -ENOMEM; 829 } 830 831 info->size = pipe_size; 832 833 /* 834 * init pipe 835 */ 836 usbhs_for_each_pipe_with_dcp(pipe, priv, i) { 837 pipe->priv = priv; 838 839 usbhs_pipe_type(pipe) = 840 pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK; 841 842 dev_dbg(dev, "pipe %x\t: %s\n", 843 i, usbhsp_pipe_name[pipe_type[i]]); 844 } 845 846 return 0; 847 } 848 849 void usbhs_pipe_remove(struct usbhs_priv *priv) 850 { 851 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 852 853 kfree(info->pipe); 854 } 855