LXR uboot/drivers/usb/musb/musb

   1/******************************************************************
   2 * Copyright 2008 Mentor Graphics Corporation
   3 * Copyright (C) 2008 by Texas Instruments
   4 *
   5 * This file is part of the Inventra Controller Driver for Linux.
   6 *
   7 * The Inventra Controller Driver for Linux is free software; you
   8 * can redistribute it and/or modify it under the terms of the GNU
   9 * General Public License version 2 as published by the Free Software
  10 * Foundation.
  11 *
  12 * The Inventra Controller Driver for Linux is distributed in
  13 * the hope that it will be useful, but WITHOUT ANY WARRANTY;
  14 * without even the implied warranty of MERCHANTABILITY or
  15 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16 * License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with The Inventra Controller Driver for Linux ; if not,
  20 * write to the Free Software Foundation, Inc., 59 Temple Place,
  21 * Suite 330, Boston, MA  02111-1307  USA
  22 *
  23 * ANY DOWNLOAD, USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION
  24 * OF THIS DRIVER INDICATES YOUR COMPLETE AND UNCONDITIONAL ACCEPTANCE
  25 * OF THOSE TERMS.THIS DRIVER IS PROVIDED "AS IS" AND MENTOR GRAPHICS
  26 * MAKES NO WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THIS DRIVER.
  27 * MENTOR GRAPHICS SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES
  28 * OF MERCHANTABILITY; FITNESS FOR A PARTICULAR PURPOSE AND
  29 * NON-INFRINGEMENT.  MENTOR GRAPHICS DOES NOT PROVIDE SUPPORT
  30 * SERVICES OR UPDATES FOR THIS DRIVER, EVEN IF YOU ARE A MENTOR
  31 * GRAPHICS SUPPORT CUSTOMER.
  32 ******************************************************************/
  33
  34#ifndef __MUSB_HDRC_DEFS_H__
  35#define __MUSB_HDRC_DEFS_H__
  36
  37#include <usb_defs.h>
  38#include <asm/io.h>
  39
  40#ifdef CONFIG_USB_BLACKFIN
  41# include "blackfin_usb.h"
  42#endif
  43
  44#define MUSB_EP0_FIFOSIZE       64      /* This is non-configurable */
  45
  46/* EP0 */
  47struct musb_ep0_regs {
  48        u16     reserved4;
  49        u16     csr0;
  50        u16     reserved5;
  51        u16     reserved6;
  52        u16     count0;
  53        u8      host_type0;
  54        u8      host_naklimit0;
  55        u8      reserved7;
  56        u8      reserved8;
  57        u8      reserved9;
  58        u8      configdata;
  59};
  60
  61/* EP 1-15 */
  62struct musb_epN_regs {
  63        u16     txmaxp;
  64        u16     txcsr;
  65        u16     rxmaxp;
  66        u16     rxcsr;
  67        u16     rxcount;
  68        u8      txtype;
  69        u8      txinterval;
  70        u8      rxtype;
  71        u8      rxinterval;
  72        u8      reserved0;
  73        u8      fifosize;
  74};
  75
  76/* Mentor USB core register overlay structure */
  77#ifndef musb_regs
  78struct musb_regs {
  79        /* common registers */
  80        u8      faddr;
  81        u8      power;
  82        u16     intrtx;
  83        u16     intrrx;
  84        u16     intrtxe;
  85        u16     intrrxe;
  86        u8      intrusb;
  87        u8      intrusbe;
  88        u16     frame;
  89        u8      index;
  90        u8      testmode;
  91        /* indexed registers */
  92        u16     txmaxp;
  93        u16     txcsr;
  94        u16     rxmaxp;
  95        u16     rxcsr;
  96        u16     rxcount;
  97        u8      txtype;
  98        u8      txinterval;
  99        u8      rxtype;
 100        u8      rxinterval;
 101        u8      reserved0;
 102        u8      fifosize;
 103        /* fifo */
 104        u32     fifox[16];
 105        /* OTG, dynamic FIFO, version & vendor registers */
 106        u8      devctl;
 107        u8      reserved1;
 108        u8      txfifosz;
 109        u8      rxfifosz;
 110        u16     txfifoadd;
 111        u16     rxfifoadd;
 112        u32     vcontrol;
 113        u16     hwvers;
 114        u16     reserved2a[1];
 115        u8      ulpi_busctl;
 116        u8      reserved2b[1];
 117        u16     reserved2[3];
 118        u8      epinfo;
 119        u8      raminfo;
 120        u8      linkinfo;
 121        u8      vplen;
 122        u8      hseof1;
 123        u8      fseof1;
 124        u8      lseof1;
 125        u8      reserved3;
 126        /* target address registers */
 127        struct musb_tar_regs {
 128                u8      txfuncaddr;
 129                u8      reserved0;
 130                u8      txhubaddr;
 131                u8      txhubport;
 132                u8      rxfuncaddr;
 133                u8      reserved1;
 134                u8      rxhubaddr;
 135                u8      rxhubport;
 136        } tar[16];
 137        /*
 138         * endpoint registers
 139         * ep0 elements are valid when array index is 0
 140         * otherwise epN is valid
 141         */
 142        union musb_ep_regs {
 143                struct musb_ep0_regs ep0;
 144                struct musb_epN_regs epN;
 145        } ep[16];
 146
 147} __attribute__((packed));
 148#endif
 149
 150/*
 151 * MUSB Register bits
 152 */
 153
 154/* POWER */
 155#define MUSB_POWER_ISOUPDATE    0x80
 156#define MUSB_POWER_SOFTCONN     0x40
 157#define MUSB_POWER_HSENAB       0x20
 158#define MUSB_POWER_HSMODE       0x10
 159#define MUSB_POWER_RESET        0x08
 160#define MUSB_POWER_RESUME       0x04
 161#define MUSB_POWER_SUSPENDM     0x02
 162#define MUSB_POWER_ENSUSPEND    0x01
 163#define MUSB_POWER_HSMODE_SHIFT 4
 164
 165/* INTRUSB */
 166#define MUSB_INTR_SUSPEND       0x01
 167#define MUSB_INTR_RESUME        0x02
 168#define MUSB_INTR_RESET         0x04
 169#define MUSB_INTR_BABBLE        0x04
 170#define MUSB_INTR_SOF           0x08
 171#define MUSB_INTR_CONNECT       0x10
 172#define MUSB_INTR_DISCONNECT    0x20
 173#define MUSB_INTR_SESSREQ       0x40
 174#define MUSB_INTR_VBUSERROR     0x80    /* For SESSION end */
 175
 176/* DEVCTL */
 177#define MUSB_DEVCTL_BDEVICE     0x80
 178#define MUSB_DEVCTL_FSDEV       0x40
 179#define MUSB_DEVCTL_LSDEV       0x20
 180#define MUSB_DEVCTL_VBUS        0x18
 181#define MUSB_DEVCTL_VBUS_SHIFT  3
 182#define MUSB_DEVCTL_HM          0x04
 183#define MUSB_DEVCTL_HR          0x02
 184#define MUSB_DEVCTL_SESSION     0x01
 185
 186/* ULPI VBUSCONTROL */
 187#define ULPI_USE_EXTVBUS        0x01
 188#define ULPI_USE_EXTVBUSIND     0x02
 189
 190/* TESTMODE */
 191#define MUSB_TEST_FORCE_HOST    0x80
 192#define MUSB_TEST_FIFO_ACCESS   0x40
 193#define MUSB_TEST_FORCE_FS      0x20
 194#define MUSB_TEST_FORCE_HS      0x10
 195#define MUSB_TEST_PACKET        0x08
 196#define MUSB_TEST_K             0x04
 197#define MUSB_TEST_J             0x02
 198#define MUSB_TEST_SE0_NAK       0x01
 199
 200/* Allocate for double-packet buffering (effectively doubles assigned _SIZE) */
 201#define MUSB_FIFOSZ_DPB         0x10
 202/* Allocation size (8, 16, 32, ... 4096) */
 203#define MUSB_FIFOSZ_SIZE        0x0f
 204
 205/* CSR0 */
 206#define MUSB_CSR0_FLUSHFIFO     0x0100
 207#define MUSB_CSR0_TXPKTRDY      0x0002
 208#define MUSB_CSR0_RXPKTRDY      0x0001
 209
 210/* CSR0 in Peripheral mode */
 211#define MUSB_CSR0_P_SVDSETUPEND 0x0080
 212#define MUSB_CSR0_P_SVDRXPKTRDY 0x0040
 213#define MUSB_CSR0_P_SENDSTALL   0x0020
 214#define MUSB_CSR0_P_SETUPEND    0x0010
 215#define MUSB_CSR0_P_DATAEND     0x0008
 216#define MUSB_CSR0_P_SENTSTALL   0x0004
 217
 218/* CSR0 in Host mode */
 219#define MUSB_CSR0_H_DIS_PING            0x0800
 220#define MUSB_CSR0_H_WR_DATATOGGLE       0x0400  /* Set to allow setting: */
 221#define MUSB_CSR0_H_DATATOGGLE          0x0200  /* Data toggle control */
 222#define MUSB_CSR0_H_NAKTIMEOUT          0x0080
 223#define MUSB_CSR0_H_STATUSPKT           0x0040
 224#define MUSB_CSR0_H_REQPKT              0x0020
 225#define MUSB_CSR0_H_ERROR               0x0010
 226#define MUSB_CSR0_H_SETUPPKT            0x0008
 227#define MUSB_CSR0_H_RXSTALL             0x0004
 228
 229/* CSR0 bits to avoid zeroing (write zero clears, write 1 ignored) */
 230#define MUSB_CSR0_P_WZC_BITS    \
 231        (MUSB_CSR0_P_SENTSTALL)
 232#define MUSB_CSR0_H_WZC_BITS    \
 233        (MUSB_CSR0_H_NAKTIMEOUT | MUSB_CSR0_H_RXSTALL \
 234        | MUSB_CSR0_RXPKTRDY)
 235
 236/* TxType/RxType */
 237#define MUSB_TYPE_SPEED         0xc0
 238#define MUSB_TYPE_SPEED_SHIFT   6
 239#define MUSB_TYPE_SPEED_HIGH    1
 240#define MUSB_TYPE_SPEED_FULL    2
 241#define MUSB_TYPE_SPEED_LOW     3
 242#define MUSB_TYPE_PROTO         0x30    /* Implicitly zero for ep0 */
 243#define MUSB_TYPE_PROTO_SHIFT   4
 244#define MUSB_TYPE_REMOTE_END    0xf     /* Implicitly zero for ep0 */
 245#define MUSB_TYPE_PROTO_BULK    2
 246#define MUSB_TYPE_PROTO_INTR    3
 247
 248/* CONFIGDATA */
 249#define MUSB_CONFIGDATA_MPRXE           0x80    /* Auto bulk pkt combining */
 250#define MUSB_CONFIGDATA_MPTXE           0x40    /* Auto bulk pkt splitting */
 251#define MUSB_CONFIGDATA_BIGENDIAN       0x20
 252#define MUSB_CONFIGDATA_HBRXE           0x10    /* HB-ISO for RX */
 253#define MUSB_CONFIGDATA_HBTXE           0x08    /* HB-ISO for TX */
 254#define MUSB_CONFIGDATA_DYNFIFO         0x04    /* Dynamic FIFO sizing */
 255#define MUSB_CONFIGDATA_SOFTCONE        0x02    /* SoftConnect */
 256#define MUSB_CONFIGDATA_UTMIDW          0x01    /* Data width 0/1 => 8/16bits */
 257
 258/* TXCSR in Peripheral and Host mode */
 259#define MUSB_TXCSR_AUTOSET              0x8000
 260#define MUSB_TXCSR_MODE                 0x2000
 261#define MUSB_TXCSR_DMAENAB              0x1000
 262#define MUSB_TXCSR_FRCDATATOG           0x0800
 263#define MUSB_TXCSR_DMAMODE              0x0400
 264#define MUSB_TXCSR_CLRDATATOG           0x0040
 265#define MUSB_TXCSR_FLUSHFIFO            0x0008
 266#define MUSB_TXCSR_FIFONOTEMPTY         0x0002
 267#define MUSB_TXCSR_TXPKTRDY             0x0001
 268
 269/* TXCSR in Peripheral mode */
 270#define MUSB_TXCSR_P_ISO                0x4000
 271#define MUSB_TXCSR_P_INCOMPTX           0x0080
 272#define MUSB_TXCSR_P_SENTSTALL          0x0020
 273#define MUSB_TXCSR_P_SENDSTALL          0x0010
 274#define MUSB_TXCSR_P_UNDERRUN           0x0004
 275
 276/* TXCSR in Host mode */
 277#define MUSB_TXCSR_H_WR_DATATOGGLE      0x0200
 278#define MUSB_TXCSR_H_DATATOGGLE         0x0100
 279#define MUSB_TXCSR_H_NAKTIMEOUT         0x0080
 280#define MUSB_TXCSR_H_RXSTALL            0x0020
 281#define MUSB_TXCSR_H_ERROR              0x0004
 282#define MUSB_TXCSR_H_DATATOGGLE_SHIFT   8
 283
 284/* TXCSR bits to avoid zeroing (write zero clears, write 1 ignored) */
 285#define MUSB_TXCSR_P_WZC_BITS   \
 286        (MUSB_TXCSR_P_INCOMPTX | MUSB_TXCSR_P_SENTSTALL \
 287        | MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_FIFONOTEMPTY)
 288#define MUSB_TXCSR_H_WZC_BITS   \
 289        (MUSB_TXCSR_H_NAKTIMEOUT | MUSB_TXCSR_H_RXSTALL \
 290        | MUSB_TXCSR_H_ERROR | MUSB_TXCSR_FIFONOTEMPTY)
 291
 292/* RXCSR in Peripheral and Host mode */
 293#define MUSB_RXCSR_AUTOCLEAR            0x8000
 294#define MUSB_RXCSR_DMAENAB              0x2000
 295#define MUSB_RXCSR_DISNYET              0x1000
 296#define MUSB_RXCSR_PID_ERR              0x1000
 297#define MUSB_RXCSR_DMAMODE              0x0800
 298#define MUSB_RXCSR_INCOMPRX             0x0100
 299#define MUSB_RXCSR_CLRDATATOG           0x0080
 300#define MUSB_RXCSR_FLUSHFIFO            0x0010
 301#define MUSB_RXCSR_DATAERROR            0x0008
 302#define MUSB_RXCSR_FIFOFULL             0x0002
 303#define MUSB_RXCSR_RXPKTRDY             0x0001
 304
 305/* RXCSR in Peripheral mode */
 306#define MUSB_RXCSR_P_ISO                0x4000
 307#define MUSB_RXCSR_P_SENTSTALL          0x0040
 308#define MUSB_RXCSR_P_SENDSTALL          0x0020
 309#define MUSB_RXCSR_P_OVERRUN            0x0004
 310
 311/* RXCSR in Host mode */
 312#define MUSB_RXCSR_H_AUTOREQ            0x4000
 313#define MUSB_RXCSR_H_WR_DATATOGGLE      0x0400
 314#define MUSB_RXCSR_H_DATATOGGLE         0x0200
 315#define MUSB_RXCSR_H_RXSTALL            0x0040
 316#define MUSB_RXCSR_H_REQPKT             0x0020
 317#define MUSB_RXCSR_H_ERROR              0x0004
 318#define MUSB_S_RXCSR_H_DATATOGGLE       9
 319
 320/* RXCSR bits to avoid zeroing (write zero clears, write 1 ignored) */
 321#define MUSB_RXCSR_P_WZC_BITS   \
 322        (MUSB_RXCSR_P_SENTSTALL | MUSB_RXCSR_P_OVERRUN \
 323        | MUSB_RXCSR_RXPKTRDY)
 324#define MUSB_RXCSR_H_WZC_BITS   \
 325        (MUSB_RXCSR_H_RXSTALL | MUSB_RXCSR_H_ERROR \
 326        | MUSB_RXCSR_DATAERROR | MUSB_RXCSR_RXPKTRDY)
 327
 328/* HUBADDR */
 329#define MUSB_HUBADDR_MULTI_TT           0x80
 330
 331/* Endpoint configuration information. Note: The value of endpoint fifo size
 332 * element should be either 8,16,32,64,128,256,512,1024,2048 or 4096. Other
 333 * values are not supported
 334 */
 335struct musb_epinfo {
 336        u8      epnum;  /* endpoint number      */
 337        u8      epdir;  /* endpoint direction   */
 338        u16     epsize; /* endpoint FIFO size   */
 339};
 340
 341/*
 342 * Platform specific MUSB configuration. Any platform using the musb
 343 * functionality should create one instance of this structure in the
 344 * platform specific file.
 345 */
 346struct musb_config {
 347        struct  musb_regs       *regs;
 348        u32                     timeout;
 349        u8                      musb_speed;
 350        u8                      extvbus;
 351};
 352
 353/* externally defined data */
 354extern struct musb_config       musb_cfg;
 355extern struct musb_regs         *musbr;
 356
 357/* exported functions */
 358extern void musb_start(void);
 359extern void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt);
 360extern void write_fifo(u8 ep, u32 length, void *fifo_data);
 361extern void read_fifo(u8 ep, u32 length, void *fifo_data);
 362
 363#if defined(CONFIG_USB_BLACKFIN)
 364/* Every USB register is accessed as a 16-bit even if the value itself
 365 * is only 8-bits in size.  Fun stuff.
 366 */
 367# undef  readb
 368# define readb(addr)     (u8)bfin_read16(addr)
 369# undef  writeb
 370# define writeb(b, addr) bfin_write16(addr, b)
 371# undef MUSB_TXCSR_MODE /* not supported */
 372# define MUSB_TXCSR_MODE 0
 373/*
 374 * The USB PHY on current Blackfin processors is a UTMI+ level 2 PHY.
 375 * However, it has no ULPI support - so there are no registers at all.
 376 * That means accesses to ULPI_BUSCONTROL have to be abstracted away.
 377 */
 378static inline u8 musb_read_ulpi_buscontrol(struct musb_regs *musbr)
 379{
 380        return 0;
 381}
 382static inline void musb_write_ulpi_buscontrol(struct musb_regs *musbr, u8 val)
 383{}
 384#else
 385static inline u8 musb_read_ulpi_buscontrol(struct musb_regs *musbr)
 386{
 387        return readb(&musbr->ulpi_busctl);
 388}
 389static inline void musb_write_ulpi_buscontrol(struct musb_regs *musbr, u8 val)
 390{
 391        writeb(val, &musbr->ulpi_busctl);
 392}
 393#endif
 394
 395#endif  /* __MUSB_HDRC_DEFS_H__ */
 396