1 // SPDX-License-Identifier: GPL-1.0+ 2 /* 3 * Renesas USB driver 4 * 5 * Copyright (C) 2011 Renesas Solutions Corp. 6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7 */ 8 #include <linux/delay.h> 9 #include <linux/slab.h> 10 #include "common.h" 11 #include "pipe.h" 12 13 /* 14 * macros 15 */ 16 #define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2) 17 18 #define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f) 19 #define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f) 20 #define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f) 21 #define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0) 22 23 /* 24 * for debug 25 */ 26 static char *usbhsp_pipe_name[] = { 27 [USB_ENDPOINT_XFER_CONTROL] = "DCP", 28 [USB_ENDPOINT_XFER_BULK] = "BULK", 29 [USB_ENDPOINT_XFER_INT] = "INT", 30 [USB_ENDPOINT_XFER_ISOC] = "ISO", 31 }; 32 33 char *usbhs_pipe_name(struct usbhs_pipe *pipe) 34 { 35 return usbhsp_pipe_name[usbhs_pipe_type(pipe)]; 36 } 37 38 static struct renesas_usbhs_driver_pipe_config 39 *usbhsp_get_pipe_config(struct usbhs_priv *priv, int pipe_num) 40 { 41 struct renesas_usbhs_driver_pipe_config *pipe_configs = 42 usbhs_get_dparam(priv, pipe_configs); 43 44 return &pipe_configs[pipe_num]; 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 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 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 } 105 106 static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe) 107 { 108 return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG); 109 } 110 111 /* 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 } 186 187 /* 188 * PIPEBUF 189 */ 190 static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) 191 { 192 if (usbhs_pipe_is_dcp(pipe)) 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 } 205 206 /* 207 * pipe control functions 208 */ 209 static void usbhsp_pipe_select(struct usbhs_pipe *pipe) 210 { 211 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 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 { 233 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 234 int timeout = 1024; 235 u16 mask = usbhs_mod_is_host(priv) ? (CSSTS | PID_MASK) : PID_MASK; 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); 256 usbhs_pipe_disable(pipe); 257 258 do { 259 if (!(usbhsp_pipectrl_get(pipe) & mask)) 260 return 0; 261 262 udelay(10); 263 264 } while (timeout--); 265 266 return -EBUSY; 267 } 268 269 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) 270 { 271 u16 val; 272 273 val = usbhsp_pipectrl_get(pipe); 274 if (val & BSTS) 275 return 0; 276 277 return -EBUSY; 278 } 279 280 /* 281 * PID ctrl 282 */ 283 static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) 284 { 285 u16 pid = usbhsp_pipectrl_get(pipe); 286 287 pid &= PID_MASK; 288 289 /* 290 * see 291 * "Pipe n Control Register" - "PID" 292 */ 293 switch (pid) { 294 case PID_STALL11: 295 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); 296 /* fall-through */ 297 case PID_STALL10: 298 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); 299 } 300 } 301 302 void usbhs_pipe_disable(struct usbhs_pipe *pipe) 303 { 304 int timeout = 1024; 305 u16 val; 306 307 /* see "Pipe n Control Register" - "PID" */ 308 __usbhsp_pid_try_nak_if_stall(pipe); 309 310 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); 311 312 do { 313 val = usbhsp_pipectrl_get(pipe); 314 val &= PBUSY; 315 if (!val) 316 break; 317 318 udelay(10); 319 } while (timeout--); 320 } 321 322 void usbhs_pipe_enable(struct usbhs_pipe *pipe) 323 { 324 /* see "Pipe n Control Register" - "PID" */ 325 __usbhsp_pid_try_nak_if_stall(pipe); 326 327 usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); 328 } 329 330 void usbhs_pipe_stall(struct usbhs_pipe *pipe) 331 { 332 u16 pid = usbhsp_pipectrl_get(pipe); 333 334 pid &= PID_MASK; 335 336 /* 337 * see 338 * "Pipe n Control Register" - "PID" 339 */ 340 switch (pid) { 341 case PID_NAK: 342 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); 343 break; 344 case PID_BUF: 345 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); 346 break; 347 } 348 } 349 350 int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) 351 { 352 u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; 353 354 return (int)(pid == PID_STALL10 || pid == PID_STALL11); 355 } 356 357 void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) 358 { 359 if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 360 return; 361 362 /* 363 * clear and disable transfer counter for IN/OUT pipe 364 */ 365 usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); 366 367 /* 368 * Only IN direction bulk pipe can use transfer count. 369 * Without using this function, 370 * received data will break if it was large data size. 371 * see PIPEnTRN/PIPEnTRE for detail 372 */ 373 if (usbhs_pipe_is_dir_in(pipe)) { 374 int maxp = usbhs_pipe_get_maxpacket(pipe); 375 376 usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); 377 usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ 378 } 379 } 380 381 382 /* 383 * pipe setup 384 */ 385 static int usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, int is_host, 386 int dir_in, u16 *pipecfg) 387 { 388 u16 type = 0; 389 u16 bfre = 0; 390 u16 dblb = 0; 391 u16 cntmd = 0; 392 u16 dir = 0; 393 u16 epnum = 0; 394 u16 shtnak = 0; 395 static const u16 type_array[] = { 396 [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, 397 [USB_ENDPOINT_XFER_INT] = TYPE_INT, 398 [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, 399 }; 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: see usbhs_pipe_config_update() */ 422 423 /* CNTMD */ 424 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) 425 cntmd = 0; /* FIXME */ 426 427 /* DIR */ 428 if (dir_in) 429 usbhsp_flags_set(pipe, IS_DIR_HOST); 430 431 if (!!is_host ^ !!dir_in) 432 dir |= DIR_OUT; 433 434 if (!dir) 435 usbhsp_flags_set(pipe, IS_DIR_IN); 436 437 /* SHTNAK */ 438 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && 439 !dir) 440 shtnak = SHTNAK; 441 442 /* EPNUM */ 443 epnum = 0; /* see usbhs_pipe_config_update() */ 444 *pipecfg = type | 445 bfre | 446 dblb | 447 cntmd | 448 dir | 449 shtnak | 450 epnum; 451 return 0; 452 } 453 454 static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) 455 { 456 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 457 struct device *dev = usbhs_priv_to_dev(priv); 458 int pipe_num = usbhs_pipe_number(pipe); 459 u16 buff_size; 460 u16 bufnmb; 461 u16 bufnmb_cnt; 462 struct renesas_usbhs_driver_pipe_config *pipe_config = 463 usbhsp_get_pipe_config(priv, pipe_num); 464 465 /* 466 * PIPEBUF 467 * 468 * see 469 * - "Register Descriptions" - "PIPEBUF" register 470 * - "Features" - "Pipe configuration" 471 * - "Operation" - "FIFO Buffer Memory" 472 * - "Operation" - "Pipe Control" 473 */ 474 buff_size = pipe_config->bufsize; 475 bufnmb = pipe_config->bufnum; 476 477 /* change buff_size to register value */ 478 bufnmb_cnt = (buff_size / 64) - 1; 479 480 dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", 481 pipe_num, buff_size, bufnmb); 482 483 return (0x1f & bufnmb_cnt) << 10 | 484 (0xff & bufnmb) << 0; 485 } 486 487 void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, 488 u16 epnum, u16 maxp) 489 { 490 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 491 int pipe_num = usbhs_pipe_number(pipe); 492 struct renesas_usbhs_driver_pipe_config *pipe_config = 493 usbhsp_get_pipe_config(priv, pipe_num); 494 u16 dblb = pipe_config->double_buf ? DBLB : 0; 495 496 if (devsel > 0xA) { 497 struct device *dev = usbhs_priv_to_dev(priv); 498 499 dev_err(dev, "devsel error %d\n", devsel); 500 501 devsel = 0; 502 } 503 504 usbhsp_pipe_barrier(pipe); 505 506 pipe->maxp = maxp; 507 508 usbhsp_pipe_select(pipe); 509 usbhsp_pipe_maxp_set(pipe, 0xFFFF, 510 (devsel << 12) | 511 maxp); 512 513 if (!usbhs_pipe_is_dcp(pipe)) 514 usbhsp_pipe_cfg_set(pipe, 0x000F | DBLB, epnum | dblb); 515 } 516 517 /* 518 * pipe control 519 */ 520 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) 521 { 522 /* 523 * see 524 * usbhs_pipe_config_update() 525 * usbhs_dcp_malloc() 526 */ 527 return pipe->maxp; 528 } 529 530 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) 531 { 532 return usbhsp_flags_has(pipe, IS_DIR_IN); 533 } 534 535 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) 536 { 537 return usbhsp_flags_has(pipe, IS_DIR_HOST); 538 } 539 540 int usbhs_pipe_is_running(struct usbhs_pipe *pipe) 541 { 542 return usbhsp_flags_has(pipe, IS_RUNNING); 543 } 544 545 void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) 546 { 547 if (running) 548 usbhsp_flags_set(pipe, IS_RUNNING); 549 else 550 usbhsp_flags_clr(pipe, IS_RUNNING); 551 } 552 553 void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) 554 { 555 u16 mask = (SQCLR | SQSET); 556 u16 val; 557 558 /* 559 * sequence 560 * 0 : data0 561 * 1 : data1 562 * -1 : no change 563 */ 564 switch (sequence) { 565 case 0: 566 val = SQCLR; 567 break; 568 case 1: 569 val = SQSET; 570 break; 571 default: 572 return; 573 } 574 575 usbhsp_pipectrl_set(pipe, mask, val); 576 } 577 578 static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) 579 { 580 return !!(usbhsp_pipectrl_get(pipe) & SQMON); 581 } 582 583 void usbhs_pipe_clear(struct usbhs_pipe *pipe) 584 { 585 if (usbhs_pipe_is_dcp(pipe)) { 586 usbhs_fifo_clear_dcp(pipe); 587 } else { 588 usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); 589 usbhsp_pipectrl_set(pipe, ACLRM, 0); 590 } 591 } 592 593 /* Should call usbhsp_pipe_select() before */ 594 void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe, 595 int needs_bfre, int bfre_enable) 596 { 597 int sequence; 598 599 usbhsp_pipe_select(pipe); 600 sequence = usbhs_pipe_get_data_sequence(pipe); 601 if (needs_bfre) 602 usbhsp_pipe_cfg_set(pipe, BFRE, bfre_enable ? BFRE : 0); 603 usbhs_pipe_clear(pipe); 604 usbhs_pipe_data_sequence(pipe, sequence); 605 } 606 607 void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) 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 usbhs_pipe_clear_without_sequence(pipe, 1, enable); 618 } 619 620 static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) 621 { 622 struct usbhs_pipe *pos, *pipe; 623 int i; 624 625 /* 626 * find target pipe 627 */ 628 pipe = NULL; 629 usbhs_for_each_pipe_with_dcp(pos, priv, i) { 630 if (!usbhs_pipe_type_is(pos, type)) 631 continue; 632 if (usbhsp_flags_has(pos, IS_USED)) 633 continue; 634 635 pipe = pos; 636 break; 637 } 638 639 if (!pipe) 640 return NULL; 641 642 /* 643 * initialize pipe flags 644 */ 645 usbhsp_flags_init(pipe); 646 usbhsp_flags_set(pipe, IS_USED); 647 648 return pipe; 649 } 650 651 static void usbhsp_put_pipe(struct usbhs_pipe *pipe) 652 { 653 usbhsp_flags_init(pipe); 654 } 655 656 void usbhs_pipe_init(struct usbhs_priv *priv, 657 int (*dma_map_ctrl)(struct device *dma_dev, 658 struct usbhs_pkt *pkt, int map)) 659 { 660 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 661 struct usbhs_pipe *pipe; 662 int i; 663 664 usbhs_for_each_pipe_with_dcp(pipe, priv, i) { 665 usbhsp_flags_init(pipe); 666 pipe->fifo = NULL; 667 pipe->mod_private = NULL; 668 INIT_LIST_HEAD(&pipe->list); 669 670 /* pipe force init */ 671 usbhs_pipe_clear(pipe); 672 } 673 674 info->dma_map_ctrl = dma_map_ctrl; 675 } 676 677 struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, 678 int endpoint_type, 679 int dir_in) 680 { 681 struct device *dev = usbhs_priv_to_dev(priv); 682 struct usbhs_pipe *pipe; 683 int is_host = usbhs_mod_is_host(priv); 684 int ret; 685 u16 pipecfg, pipebuf; 686 687 pipe = usbhsp_get_pipe(priv, endpoint_type); 688 if (!pipe) { 689 dev_err(dev, "can't get pipe (%s)\n", 690 usbhsp_pipe_name[endpoint_type]); 691 return NULL; 692 } 693 694 INIT_LIST_HEAD(&pipe->list); 695 696 usbhs_pipe_disable(pipe); 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 } 704 705 if (usbhsp_setup_pipecfg(pipe, is_host, dir_in, &pipecfg)) { 706 dev_err(dev, "can't setup pipe\n"); 707 return NULL; 708 } 709 710 pipebuf = usbhsp_setup_pipebuff(pipe); 711 712 usbhsp_pipe_select(pipe); 713 usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); 714 usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); 715 usbhs_pipe_clear(pipe); 716 717 usbhs_pipe_sequence_data0(pipe); 718 719 dev_dbg(dev, "enable pipe %d : %s (%s)\n", 720 usbhs_pipe_number(pipe), 721 usbhs_pipe_name(pipe), 722 usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); 723 724 /* 725 * epnum / maxp are still not set to this pipe. 726 * call usbhs_pipe_config_update() after this function !! 727 */ 728 729 return pipe; 730 } 731 732 void usbhs_pipe_free(struct usbhs_pipe *pipe) 733 { 734 usbhsp_put_pipe(pipe); 735 } 736 737 void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) 738 { 739 if (pipe->fifo) 740 pipe->fifo->pipe = NULL; 741 742 pipe->fifo = fifo; 743 744 if (fifo) 745 fifo->pipe = pipe; 746 } 747 748 749 /* 750 * dcp control 751 */ 752 struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) 753 { 754 struct usbhs_pipe *pipe; 755 756 pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); 757 if (!pipe) 758 return NULL; 759 760 INIT_LIST_HEAD(&pipe->list); 761 762 /* 763 * call usbhs_pipe_config_update() after this function !! 764 */ 765 766 return pipe; 767 } 768 769 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) 770 { 771 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); 772 773 WARN_ON(!usbhs_pipe_is_dcp(pipe)); 774 775 usbhs_pipe_enable(pipe); 776 777 if (!usbhs_mod_is_host(priv)) /* funconly */ 778 usbhsp_pipectrl_set(pipe, CCPL, CCPL); 779 } 780 781 void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) 782 { 783 usbhsp_pipe_cfg_set(pipe, DIR_OUT, 784 dir_out ? DIR_OUT : 0); 785 } 786 787 /* 788 * pipe module function 789 */ 790 int usbhs_pipe_probe(struct usbhs_priv *priv) 791 { 792 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 793 struct usbhs_pipe *pipe; 794 struct device *dev = usbhs_priv_to_dev(priv); 795 struct renesas_usbhs_driver_pipe_config *pipe_configs = 796 usbhs_get_dparam(priv, pipe_configs); 797 int pipe_size = usbhs_get_dparam(priv, pipe_size); 798 int i; 799 800 /* This driver expects 1st pipe is DCP */ 801 if (pipe_configs[0].type != USB_ENDPOINT_XFER_CONTROL) { 802 dev_err(dev, "1st PIPE is not DCP\n"); 803 return -EINVAL; 804 } 805 806 info->pipe = kcalloc(pipe_size, sizeof(struct usbhs_pipe), 807 GFP_KERNEL); 808 if (!info->pipe) 809 return -ENOMEM; 810 811 info->size = pipe_size; 812 813 /* 814 * init pipe 815 */ 816 usbhs_for_each_pipe_with_dcp(pipe, priv, i) { 817 pipe->priv = priv; 818 819 usbhs_pipe_type(pipe) = 820 pipe_configs[i].type & USB_ENDPOINT_XFERTYPE_MASK; 821 822 dev_dbg(dev, "pipe %x\t: %s\n", 823 i, usbhsp_pipe_name[pipe_configs[i].type]); 824 } 825 826 return 0; 827 } 828 829 void usbhs_pipe_remove(struct usbhs_priv *priv) 830 { 831 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); 832 833 kfree(info->pipe); 834 } 835