1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __LINUX_FOTG210_H 3 #define __LINUX_FOTG210_H 4 5 #include <linux/usb/ehci-dbgp.h> 6 7 /* definitions used for the EHCI driver */ 8 9 /* 10 * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to 11 * __leXX (normally) or __beXX (given FOTG210_BIG_ENDIAN_DESC), depending on 12 * the host controller implementation. 13 * 14 * To facilitate the strongest possible byte-order checking from "sparse" 15 * and so on, we use __leXX unless that's not practical. 16 */ 17 #define __hc32 __le32 18 #define __hc16 __le16 19 20 /* statistics can be kept for tuning/monitoring */ 21 struct fotg210_stats { 22 /* irq usage */ 23 unsigned long normal; 24 unsigned long error; 25 unsigned long iaa; 26 unsigned long lost_iaa; 27 28 /* termination of urbs from core */ 29 unsigned long complete; 30 unsigned long unlink; 31 }; 32 33 /* fotg210_hcd->lock guards shared data against other CPUs: 34 * fotg210_hcd: async, unlink, periodic (and shadow), ... 35 * usb_host_endpoint: hcpriv 36 * fotg210_qh: qh_next, qtd_list 37 * fotg210_qtd: qtd_list 38 * 39 * Also, hold this lock when talking to HC registers or 40 * when updating hw_* fields in shared qh/qtd/... structures. 41 */ 42 43 #define FOTG210_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */ 44 45 /* 46 * fotg210_rh_state values of FOTG210_RH_RUNNING or above mean that the 47 * controller may be doing DMA. Lower values mean there's no DMA. 48 */ 49 enum fotg210_rh_state { 50 FOTG210_RH_HALTED, 51 FOTG210_RH_SUSPENDED, 52 FOTG210_RH_RUNNING, 53 FOTG210_RH_STOPPING 54 }; 55 56 /* 57 * Timer events, ordered by increasing delay length. 58 * Always update event_delays_ns[] and event_handlers[] (defined in 59 * ehci-timer.c) in parallel with this list. 60 */ 61 enum fotg210_hrtimer_event { 62 FOTG210_HRTIMER_POLL_ASS, /* Poll for async schedule off */ 63 FOTG210_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */ 64 FOTG210_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ 65 FOTG210_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ 66 FOTG210_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ 67 FOTG210_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ 68 FOTG210_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ 69 FOTG210_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ 70 FOTG210_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */ 71 FOTG210_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */ 72 FOTG210_HRTIMER_NUM_EVENTS /* Must come last */ 73 }; 74 #define FOTG210_HRTIMER_NO_EVENT 99 75 76 struct fotg210_hcd { /* one per controller */ 77 /* timing support */ 78 enum fotg210_hrtimer_event next_hrtimer_event; 79 unsigned enabled_hrtimer_events; 80 ktime_t hr_timeouts[FOTG210_HRTIMER_NUM_EVENTS]; 81 struct hrtimer hrtimer; 82 83 int PSS_poll_count; 84 int ASS_poll_count; 85 int died_poll_count; 86 87 /* glue to PCI and HCD framework */ 88 struct fotg210_caps __iomem *caps; 89 struct fotg210_regs __iomem *regs; 90 struct ehci_dbg_port __iomem *debug; 91 92 __u32 hcs_params; /* cached register copy */ 93 spinlock_t lock; 94 enum fotg210_rh_state rh_state; 95 96 /* general schedule support */ 97 bool scanning:1; 98 bool need_rescan:1; 99 bool intr_unlinking:1; 100 bool async_unlinking:1; 101 bool shutdown:1; 102 struct fotg210_qh *qh_scan_next; 103 104 /* async schedule support */ 105 struct fotg210_qh *async; 106 struct fotg210_qh *dummy; /* For AMD quirk use */ 107 struct fotg210_qh *async_unlink; 108 struct fotg210_qh *async_unlink_last; 109 struct fotg210_qh *async_iaa; 110 unsigned async_unlink_cycle; 111 unsigned async_count; /* async activity count */ 112 113 /* periodic schedule support */ 114 #define DEFAULT_I_TDPS 1024 /* some HCs can do less */ 115 unsigned periodic_size; 116 __hc32 *periodic; /* hw periodic table */ 117 dma_addr_t periodic_dma; 118 struct list_head intr_qh_list; 119 unsigned i_thresh; /* uframes HC might cache */ 120 121 union fotg210_shadow *pshadow; /* mirror hw periodic table */ 122 struct fotg210_qh *intr_unlink; 123 struct fotg210_qh *intr_unlink_last; 124 unsigned intr_unlink_cycle; 125 unsigned now_frame; /* frame from HC hardware */ 126 unsigned next_frame; /* scan periodic, start here */ 127 unsigned intr_count; /* intr activity count */ 128 unsigned isoc_count; /* isoc activity count */ 129 unsigned periodic_count; /* periodic activity count */ 130 /* max periodic time per uframe */ 131 unsigned uframe_periodic_max; 132 133 134 /* list of itds completed while now_frame was still active */ 135 struct list_head cached_itd_list; 136 struct fotg210_itd *last_itd_to_free; 137 138 /* per root hub port */ 139 unsigned long reset_done[FOTG210_MAX_ROOT_PORTS]; 140 141 /* bit vectors (one bit per port) 142 * which ports were already suspended at the start of a bus suspend 143 */ 144 unsigned long bus_suspended; 145 146 /* which ports are edicated to the companion controller */ 147 unsigned long companion_ports; 148 149 /* which ports are owned by the companion during a bus suspend */ 150 unsigned long owned_ports; 151 152 /* which ports have the change-suspend feature turned on */ 153 unsigned long port_c_suspend; 154 155 /* which ports are suspended */ 156 unsigned long suspended_ports; 157 158 /* which ports have started to resume */ 159 unsigned long resuming_ports; 160 161 /* per-HC memory pools (could be per-bus, but ...) */ 162 struct dma_pool *qh_pool; /* qh per active urb */ 163 struct dma_pool *qtd_pool; /* one or more per qh */ 164 struct dma_pool *itd_pool; /* itd per iso urb */ 165 166 unsigned random_frame; 167 unsigned long next_statechange; 168 ktime_t last_periodic_enable; 169 u32 command; 170 171 /* SILICON QUIRKS */ 172 unsigned need_io_watchdog:1; 173 unsigned fs_i_thresh:1; /* Intel iso scheduling */ 174 175 u8 sbrn; /* packed release number */ 176 177 /* irq statistics */ 178 #ifdef FOTG210_STATS 179 struct fotg210_stats stats; 180 # define INCR(x) ((x)++) 181 #else 182 # define INCR(x) do {} while (0) 183 #endif 184 185 struct fotg210 *fotg; /* Overarching FOTG210 device */ 186 /* silicon clock */ 187 struct clk *pclk; 188 }; 189 190 /* convert between an HCD pointer and the corresponding FOTG210_HCD */ hcd_to_fotg210(struct usb_hcd * hcd)191 static inline struct fotg210_hcd *hcd_to_fotg210(struct usb_hcd *hcd) 192 { 193 return (struct fotg210_hcd *)(hcd->hcd_priv); 194 } fotg210_to_hcd(struct fotg210_hcd * fotg210)195 static inline struct usb_hcd *fotg210_to_hcd(struct fotg210_hcd *fotg210) 196 { 197 return container_of((void *) fotg210, struct usb_hcd, hcd_priv); 198 } 199 200 /*-------------------------------------------------------------------------*/ 201 202 /* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ 203 204 /* Section 2.2 Host Controller Capability Registers */ 205 struct fotg210_caps { 206 /* these fields are specified as 8 and 16 bit registers, 207 * but some hosts can't perform 8 or 16 bit PCI accesses. 208 * some hosts treat caplength and hciversion as parts of a 32-bit 209 * register, others treat them as two separate registers, this 210 * affects the memory map for big endian controllers. 211 */ 212 u32 hc_capbase; 213 #define HC_LENGTH(fotg210, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \ 214 (fotg210_big_endian_capbase(fotg210) ? 24 : 0))) 215 #define HC_VERSION(fotg210, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \ 216 (fotg210_big_endian_capbase(fotg210) ? 0 : 16))) 217 u32 hcs_params; /* HCSPARAMS - offset 0x4 */ 218 #define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ 219 220 u32 hcc_params; /* HCCPARAMS - offset 0x8 */ 221 #define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ 222 #define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ 223 u8 portroute[8]; /* nibbles for routing - offset 0xC */ 224 }; 225 226 227 /* Section 2.3 Host Controller Operational Registers */ 228 struct fotg210_regs { 229 230 /* USBCMD: offset 0x00 */ 231 u32 command; 232 233 /* EHCI 1.1 addendum */ 234 /* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ 235 #define CMD_PARK (1<<11) /* enable "park" on async qh */ 236 #define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ 237 #define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ 238 #define CMD_ASE (1<<5) /* async schedule enable */ 239 #define CMD_PSE (1<<4) /* periodic schedule enable */ 240 /* 3:2 is periodic frame list size */ 241 #define CMD_RESET (1<<1) /* reset HC not bus */ 242 #define CMD_RUN (1<<0) /* start/stop HC */ 243 244 /* USBSTS: offset 0x04 */ 245 u32 status; 246 #define STS_ASS (1<<15) /* Async Schedule Status */ 247 #define STS_PSS (1<<14) /* Periodic Schedule Status */ 248 #define STS_RECL (1<<13) /* Reclamation */ 249 #define STS_HALT (1<<12) /* Not running (any reason) */ 250 /* some bits reserved */ 251 /* these STS_* flags are also intr_enable bits (USBINTR) */ 252 #define STS_IAA (1<<5) /* Interrupted on async advance */ 253 #define STS_FATAL (1<<4) /* such as some PCI access errors */ 254 #define STS_FLR (1<<3) /* frame list rolled over */ 255 #define STS_PCD (1<<2) /* port change detect */ 256 #define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ 257 #define STS_INT (1<<0) /* "normal" completion (short, ...) */ 258 259 /* USBINTR: offset 0x08 */ 260 u32 intr_enable; 261 262 /* FRINDEX: offset 0x0C */ 263 u32 frame_index; /* current microframe number */ 264 /* CTRLDSSEGMENT: offset 0x10 */ 265 u32 segment; /* address bits 63:32 if needed */ 266 /* PERIODICLISTBASE: offset 0x14 */ 267 u32 frame_list; /* points to periodic list */ 268 /* ASYNCLISTADDR: offset 0x18 */ 269 u32 async_next; /* address of next async queue head */ 270 271 u32 reserved1; 272 /* PORTSC: offset 0x20 */ 273 u32 port_status; 274 /* 31:23 reserved */ 275 #define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */ 276 #define PORT_RESET (1<<8) /* reset port */ 277 #define PORT_SUSPEND (1<<7) /* suspend port */ 278 #define PORT_RESUME (1<<6) /* resume it */ 279 #define PORT_PEC (1<<3) /* port enable change */ 280 #define PORT_PE (1<<2) /* port enable */ 281 #define PORT_CSC (1<<1) /* connect status change */ 282 #define PORT_CONNECT (1<<0) /* device connected */ 283 #define PORT_RWC_BITS (PORT_CSC | PORT_PEC) 284 u32 reserved2[19]; 285 286 /* OTGCSR: offet 0x70 */ 287 u32 otgcsr; 288 #define OTGCSR_HOST_SPD_TYP (3 << 22) 289 #define OTGCSR_A_BUS_DROP (1 << 5) 290 #define OTGCSR_A_BUS_REQ (1 << 4) 291 292 /* OTGISR: offset 0x74 */ 293 u32 otgisr; 294 #define OTGISR_OVC (1 << 10) 295 296 u32 reserved3[15]; 297 298 /* GMIR: offset 0xB4 */ 299 u32 gmir; 300 #define GMIR_INT_POLARITY (1 << 3) /*Active High*/ 301 #define GMIR_MHC_INT (1 << 2) 302 #define GMIR_MOTG_INT (1 << 1) 303 #define GMIR_MDEV_INT (1 << 0) 304 }; 305 306 /*-------------------------------------------------------------------------*/ 307 308 #define QTD_NEXT(fotg210, dma) cpu_to_hc32(fotg210, (u32)dma) 309 310 /* 311 * EHCI Specification 0.95 Section 3.5 312 * QTD: describe data transfer components (buffer, direction, ...) 313 * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram". 314 * 315 * These are associated only with "QH" (Queue Head) structures, 316 * used with control, bulk, and interrupt transfers. 317 */ 318 struct fotg210_qtd { 319 /* first part defined by EHCI spec */ 320 __hc32 hw_next; /* see EHCI 3.5.1 */ 321 __hc32 hw_alt_next; /* see EHCI 3.5.2 */ 322 __hc32 hw_token; /* see EHCI 3.5.3 */ 323 #define QTD_TOGGLE (1 << 31) /* data toggle */ 324 #define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff) 325 #define QTD_IOC (1 << 15) /* interrupt on complete */ 326 #define QTD_CERR(tok) (((tok)>>10) & 0x3) 327 #define QTD_PID(tok) (((tok)>>8) & 0x3) 328 #define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */ 329 #define QTD_STS_HALT (1 << 6) /* halted on error */ 330 #define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */ 331 #define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */ 332 #define QTD_STS_XACT (1 << 3) /* device gave illegal response */ 333 #define QTD_STS_MMF (1 << 2) /* incomplete split transaction */ 334 #define QTD_STS_STS (1 << 1) /* split transaction state */ 335 #define QTD_STS_PING (1 << 0) /* issue PING? */ 336 337 #define ACTIVE_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_ACTIVE) 338 #define HALT_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_HALT) 339 #define STATUS_BIT(fotg210) cpu_to_hc32(fotg210, QTD_STS_STS) 340 341 __hc32 hw_buf[5]; /* see EHCI 3.5.4 */ 342 __hc32 hw_buf_hi[5]; /* Appendix B */ 343 344 /* the rest is HCD-private */ 345 dma_addr_t qtd_dma; /* qtd address */ 346 struct list_head qtd_list; /* sw qtd list */ 347 struct urb *urb; /* qtd's urb */ 348 size_t length; /* length of buffer */ 349 } __aligned(32); 350 351 /* mask NakCnt+T in qh->hw_alt_next */ 352 #define QTD_MASK(fotg210) cpu_to_hc32(fotg210, ~0x1f) 353 354 #define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1) 355 356 /*-------------------------------------------------------------------------*/ 357 358 /* type tag from {qh,itd,fstn}->hw_next */ 359 #define Q_NEXT_TYPE(fotg210, dma) ((dma) & cpu_to_hc32(fotg210, 3 << 1)) 360 361 /* 362 * Now the following defines are not converted using the 363 * cpu_to_le32() macro anymore, since we have to support 364 * "dynamic" switching between be and le support, so that the driver 365 * can be used on one system with SoC EHCI controller using big-endian 366 * descriptors as well as a normal little-endian PCI EHCI controller. 367 */ 368 /* values for that type tag */ 369 #define Q_TYPE_ITD (0 << 1) 370 #define Q_TYPE_QH (1 << 1) 371 #define Q_TYPE_SITD (2 << 1) 372 #define Q_TYPE_FSTN (3 << 1) 373 374 /* next async queue entry, or pointer to interrupt/periodic QH */ 375 #define QH_NEXT(fotg210, dma) \ 376 (cpu_to_hc32(fotg210, (((u32)dma)&~0x01f)|Q_TYPE_QH)) 377 378 /* for periodic/async schedules and qtd lists, mark end of list */ 379 #define FOTG210_LIST_END(fotg210) \ 380 cpu_to_hc32(fotg210, 1) /* "null pointer" to hw */ 381 382 /* 383 * Entries in periodic shadow table are pointers to one of four kinds 384 * of data structure. That's dictated by the hardware; a type tag is 385 * encoded in the low bits of the hardware's periodic schedule. Use 386 * Q_NEXT_TYPE to get the tag. 387 * 388 * For entries in the async schedule, the type tag always says "qh". 389 */ 390 union fotg210_shadow { 391 struct fotg210_qh *qh; /* Q_TYPE_QH */ 392 struct fotg210_itd *itd; /* Q_TYPE_ITD */ 393 struct fotg210_fstn *fstn; /* Q_TYPE_FSTN */ 394 __hc32 *hw_next; /* (all types) */ 395 void *ptr; 396 }; 397 398 /*-------------------------------------------------------------------------*/ 399 400 /* 401 * EHCI Specification 0.95 Section 3.6 402 * QH: describes control/bulk/interrupt endpoints 403 * See Fig 3-7 "Queue Head Structure Layout". 404 * 405 * These appear in both the async and (for interrupt) periodic schedules. 406 */ 407 408 /* first part defined by EHCI spec */ 409 struct fotg210_qh_hw { 410 __hc32 hw_next; /* see EHCI 3.6.1 */ 411 __hc32 hw_info1; /* see EHCI 3.6.2 */ 412 #define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ 413 #define QH_HEAD (1 << 15) /* Head of async reclamation list */ 414 #define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ 415 #define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ 416 #define QH_LOW_SPEED (1 << 12) 417 #define QH_FULL_SPEED (0 << 12) 418 #define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */ 419 __hc32 hw_info2; /* see EHCI 3.6.2 */ 420 #define QH_SMASK 0x000000ff 421 #define QH_CMASK 0x0000ff00 422 #define QH_HUBADDR 0x007f0000 423 #define QH_HUBPORT 0x3f800000 424 #define QH_MULT 0xc0000000 425 __hc32 hw_current; /* qtd list - see EHCI 3.6.4 */ 426 427 /* qtd overlay (hardware parts of a struct fotg210_qtd) */ 428 __hc32 hw_qtd_next; 429 __hc32 hw_alt_next; 430 __hc32 hw_token; 431 __hc32 hw_buf[5]; 432 __hc32 hw_buf_hi[5]; 433 } __aligned(32); 434 435 struct fotg210_qh { 436 struct fotg210_qh_hw *hw; /* Must come first */ 437 /* the rest is HCD-private */ 438 dma_addr_t qh_dma; /* address of qh */ 439 union fotg210_shadow qh_next; /* ptr to qh; or periodic */ 440 struct list_head qtd_list; /* sw qtd list */ 441 struct list_head intr_node; /* list of intr QHs */ 442 struct fotg210_qtd *dummy; 443 struct fotg210_qh *unlink_next; /* next on unlink list */ 444 445 unsigned unlink_cycle; 446 447 u8 needs_rescan; /* Dequeue during giveback */ 448 u8 qh_state; 449 #define QH_STATE_LINKED 1 /* HC sees this */ 450 #define QH_STATE_UNLINK 2 /* HC may still see this */ 451 #define QH_STATE_IDLE 3 /* HC doesn't see this */ 452 #define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */ 453 #define QH_STATE_COMPLETING 5 /* don't touch token.HALT */ 454 455 u8 xacterrs; /* XactErr retry counter */ 456 #define QH_XACTERR_MAX 32 /* XactErr retry limit */ 457 458 /* periodic schedule info */ 459 u8 usecs; /* intr bandwidth */ 460 u8 gap_uf; /* uframes split/csplit gap */ 461 u8 c_usecs; /* ... split completion bw */ 462 u16 tt_usecs; /* tt downstream bandwidth */ 463 unsigned short period; /* polling interval */ 464 unsigned short start; /* where polling starts */ 465 #define NO_FRAME ((unsigned short)~0) /* pick new start */ 466 467 struct usb_device *dev; /* access to TT */ 468 unsigned is_out:1; /* bulk or intr OUT */ 469 unsigned clearing_tt:1; /* Clear-TT-Buf in progress */ 470 }; 471 472 /*-------------------------------------------------------------------------*/ 473 474 /* description of one iso transaction (up to 3 KB data if highspeed) */ 475 struct fotg210_iso_packet { 476 /* These will be copied to iTD when scheduling */ 477 u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */ 478 __hc32 transaction; /* itd->hw_transaction[i] |= */ 479 u8 cross; /* buf crosses pages */ 480 /* for full speed OUT splits */ 481 u32 buf1; 482 }; 483 484 /* temporary schedule data for packets from iso urbs (both speeds) 485 * each packet is one logical usb transaction to the device (not TT), 486 * beginning at stream->next_uframe 487 */ 488 struct fotg210_iso_sched { 489 struct list_head td_list; 490 unsigned span; 491 struct fotg210_iso_packet packet[]; 492 }; 493 494 /* 495 * fotg210_iso_stream - groups all (s)itds for this endpoint. 496 * acts like a qh would, if EHCI had them for ISO. 497 */ 498 struct fotg210_iso_stream { 499 /* first field matches fotg210_hq, but is NULL */ 500 struct fotg210_qh_hw *hw; 501 502 u8 bEndpointAddress; 503 u8 highspeed; 504 struct list_head td_list; /* queued itds */ 505 struct list_head free_list; /* list of unused itds */ 506 struct usb_device *udev; 507 struct usb_host_endpoint *ep; 508 509 /* output of (re)scheduling */ 510 int next_uframe; 511 __hc32 splits; 512 513 /* the rest is derived from the endpoint descriptor, 514 * trusting urb->interval == f(epdesc->bInterval) and 515 * including the extra info for hw_bufp[0..2] 516 */ 517 u8 usecs, c_usecs; 518 u16 interval; 519 u16 tt_usecs; 520 u16 maxp; 521 u16 raw_mask; 522 unsigned bandwidth; 523 524 /* This is used to initialize iTD's hw_bufp fields */ 525 __hc32 buf0; 526 __hc32 buf1; 527 __hc32 buf2; 528 529 /* this is used to initialize sITD's tt info */ 530 __hc32 address; 531 }; 532 533 /*-------------------------------------------------------------------------*/ 534 535 /* 536 * EHCI Specification 0.95 Section 3.3 537 * Fig 3-4 "Isochronous Transaction Descriptor (iTD)" 538 * 539 * Schedule records for high speed iso xfers 540 */ 541 struct fotg210_itd { 542 /* first part defined by EHCI spec */ 543 __hc32 hw_next; /* see EHCI 3.3.1 */ 544 __hc32 hw_transaction[8]; /* see EHCI 3.3.2 */ 545 #define FOTG210_ISOC_ACTIVE (1<<31) /* activate transfer this slot */ 546 #define FOTG210_ISOC_BUF_ERR (1<<30) /* Data buffer error */ 547 #define FOTG210_ISOC_BABBLE (1<<29) /* babble detected */ 548 #define FOTG210_ISOC_XACTERR (1<<28) /* XactErr - transaction error */ 549 #define FOTG210_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff) 550 #define FOTG210_ITD_IOC (1 << 15) /* interrupt on complete */ 551 552 #define ITD_ACTIVE(fotg210) cpu_to_hc32(fotg210, FOTG210_ISOC_ACTIVE) 553 554 __hc32 hw_bufp[7]; /* see EHCI 3.3.3 */ 555 __hc32 hw_bufp_hi[7]; /* Appendix B */ 556 557 /* the rest is HCD-private */ 558 dma_addr_t itd_dma; /* for this itd */ 559 union fotg210_shadow itd_next; /* ptr to periodic q entry */ 560 561 struct urb *urb; 562 struct fotg210_iso_stream *stream; /* endpoint's queue */ 563 struct list_head itd_list; /* list of stream's itds */ 564 565 /* any/all hw_transactions here may be used by that urb */ 566 unsigned frame; /* where scheduled */ 567 unsigned pg; 568 unsigned index[8]; /* in urb->iso_frame_desc */ 569 } __aligned(32); 570 571 /*-------------------------------------------------------------------------*/ 572 573 /* 574 * EHCI Specification 0.96 Section 3.7 575 * Periodic Frame Span Traversal Node (FSTN) 576 * 577 * Manages split interrupt transactions (using TT) that span frame boundaries 578 * into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN 579 * makes the HC jump (back) to a QH to scan for fs/ls QH completions until 580 * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work. 581 */ 582 struct fotg210_fstn { 583 __hc32 hw_next; /* any periodic q entry */ 584 __hc32 hw_prev; /* qh or FOTG210_LIST_END */ 585 586 /* the rest is HCD-private */ 587 dma_addr_t fstn_dma; 588 union fotg210_shadow fstn_next; /* ptr to periodic q entry */ 589 } __aligned(32); 590 591 /*-------------------------------------------------------------------------*/ 592 593 /* Prepare the PORTSC wakeup flags during controller suspend/resume */ 594 595 #define fotg210_prepare_ports_for_controller_suspend(fotg210, do_wakeup) \ 596 fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup) 597 598 #define fotg210_prepare_ports_for_controller_resume(fotg210) \ 599 fotg210_adjust_port_wakeup_flags(fotg210, false, false) 600 601 /*-------------------------------------------------------------------------*/ 602 603 /* 604 * Some EHCI controllers have a Transaction Translator built into the 605 * root hub. This is a non-standard feature. Each controller will need 606 * to add code to the following inline functions, and call them as 607 * needed (mostly in root hub code). 608 */ 609 610 static inline unsigned int fotg210_get_speed(struct fotg210_hcd * fotg210,unsigned int portsc)611 fotg210_get_speed(struct fotg210_hcd *fotg210, unsigned int portsc) 612 { 613 return (readl(&fotg210->regs->otgcsr) 614 & OTGCSR_HOST_SPD_TYP) >> 22; 615 } 616 617 /* Returns the speed of a device attached to a port on the root hub. */ 618 static inline unsigned int fotg210_port_speed(struct fotg210_hcd * fotg210,unsigned int portsc)619 fotg210_port_speed(struct fotg210_hcd *fotg210, unsigned int portsc) 620 { 621 switch (fotg210_get_speed(fotg210, portsc)) { 622 case 0: 623 return 0; 624 case 1: 625 return USB_PORT_STAT_LOW_SPEED; 626 case 2: 627 default: 628 return USB_PORT_STAT_HIGH_SPEED; 629 } 630 } 631 632 /*-------------------------------------------------------------------------*/ 633 634 #define fotg210_has_fsl_portno_bug(e) (0) 635 636 /* 637 * While most USB host controllers implement their registers in 638 * little-endian format, a minority (celleb companion chip) implement 639 * them in big endian format. 640 * 641 * This attempts to support either format at compile time without a 642 * runtime penalty, or both formats with the additional overhead 643 * of checking a flag bit. 644 * 645 */ 646 647 #define fotg210_big_endian_mmio(e) 0 648 #define fotg210_big_endian_capbase(e) 0 649 fotg210_readl(const struct fotg210_hcd * fotg210,__u32 __iomem * regs)650 static inline unsigned int fotg210_readl(const struct fotg210_hcd *fotg210, 651 __u32 __iomem *regs) 652 { 653 return readl(regs); 654 } 655 fotg210_writel(const struct fotg210_hcd * fotg210,const unsigned int val,__u32 __iomem * regs)656 static inline void fotg210_writel(const struct fotg210_hcd *fotg210, 657 const unsigned int val, __u32 __iomem *regs) 658 { 659 writel(val, regs); 660 } 661 662 /* cpu to fotg210 */ cpu_to_hc32(const struct fotg210_hcd * fotg210,const u32 x)663 static inline __hc32 cpu_to_hc32(const struct fotg210_hcd *fotg210, const u32 x) 664 { 665 return cpu_to_le32(x); 666 } 667 668 /* fotg210 to cpu */ hc32_to_cpu(const struct fotg210_hcd * fotg210,const __hc32 x)669 static inline u32 hc32_to_cpu(const struct fotg210_hcd *fotg210, const __hc32 x) 670 { 671 return le32_to_cpu(x); 672 } 673 hc32_to_cpup(const struct fotg210_hcd * fotg210,const __hc32 * x)674 static inline u32 hc32_to_cpup(const struct fotg210_hcd *fotg210, 675 const __hc32 *x) 676 { 677 return le32_to_cpup(x); 678 } 679 680 /*-------------------------------------------------------------------------*/ 681 fotg210_read_frame_index(struct fotg210_hcd * fotg210)682 static inline unsigned fotg210_read_frame_index(struct fotg210_hcd *fotg210) 683 { 684 return fotg210_readl(fotg210, &fotg210->regs->frame_index); 685 } 686 687 /*-------------------------------------------------------------------------*/ 688 689 #endif /* __LINUX_FOTG210_H */ 690