drivers/usb/gadget/goku_udc.h

   1 /*
   2  * Toshiba TC86C001 ("Goku-S") USB Device Controller driver
   3  *
   4  * Copyright (C) 2000-2002 Lineo
   5  *      by Stuart Lynne, Tom Rushworth, and Bruce Balden
   6  * Copyright (C) 2002 Toshiba Corporation
   7  * Copyright (C) 2003 MontaVista Software (source@mvista.com)
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2.  This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 /*
  15  * PCI BAR 0 points to these registers.
  16  */
  17 struct goku_udc_regs {
  18         /* irq management */
  19         u32     int_status;             /* 0x000 */
  20         u32     int_enable;
  21 #define INT_SUSPEND             0x00001         /* or resume */
  22 #define INT_USBRESET            0x00002
  23 #define INT_ENDPOINT0           0x00004
  24 #define INT_SETUP               0x00008
  25 #define INT_STATUS              0x00010
  26 #define INT_STATUSNAK           0x00020
  27 #define INT_EPxDATASET(n)       (0x00020 << (n))        /* 0 < n < 4 */
  28 #       define INT_EP1DATASET           0x00040
  29 #       define INT_EP2DATASET           0x00080
  30 #       define INT_EP3DATASET           0x00100
  31 #define INT_EPnNAK(n)           (0x00100 < (n))         /* 0 < n < 4 */
  32 #       define INT_EP1NAK               0x00200
  33 #       define INT_EP2NAK               0x00400
  34 #       define INT_EP3NAK               0x00800
  35 #define INT_SOF                 0x01000
  36 #define INT_ERR                 0x02000
  37 #define INT_MSTWRSET            0x04000
  38 #define INT_MSTWREND            0x08000
  39 #define INT_MSTWRTMOUT          0x10000
  40 #define INT_MSTRDEND            0x20000
  41 #define INT_SYSERROR            0x40000
  42 #define INT_PWRDETECT           0x80000
  43
  44 #define INT_DEVWIDE \
  45         (INT_PWRDETECT|INT_SYSERROR/*|INT_ERR*/|INT_USBRESET|INT_SUSPEND)
  46 #define INT_EP0 \
  47         (INT_SETUP|INT_ENDPOINT0/*|INT_STATUS*/|INT_STATUSNAK)
  48
  49         u32     dma_master;
  50 #define MST_EOPB_DIS            0x0800
  51 #define MST_EOPB_ENA            0x0400
  52 #define MST_TIMEOUT_DIS         0x0200
  53 #define MST_TIMEOUT_ENA         0x0100
  54 #define MST_RD_EOPB             0x0080          /* write-only */
  55 #define MST_RD_RESET            0x0040
  56 #define MST_WR_RESET            0x0020
  57 #define MST_RD_ENA              0x0004          /* 1:start, 0:ignore */
  58 #define MST_WR_ENA              0x0002          /* 1:start, 0:ignore */
  59 #define MST_CONNECTION          0x0001          /* 0 for ep1out/ep2in */
  60
  61 #define MST_R_BITS              (MST_EOPB_DIS|MST_EOPB_ENA \
  62                                         |MST_RD_ENA|MST_RD_RESET)
  63 #define MST_W_BITS              (MST_TIMEOUT_DIS|MST_TIMEOUT_ENA \
  64                                         |MST_WR_ENA|MST_WR_RESET)
  65 #define MST_RW_BITS             (MST_R_BITS|MST_W_BITS \
  66                                         |MST_CONNECTION)
  67
  68 /* these values assume (dma_master & MST_CONNECTION) == 0 */
  69 #define UDC_MSTWR_ENDPOINT        1
  70 #define UDC_MSTRD_ENDPOINT        2
  71
  72         /* dma master write */
  73         u32     out_dma_start;
  74         u32     out_dma_end;
  75         u32     out_dma_current;
  76
  77         /* dma master read */
  78         u32     in_dma_start;
  79         u32     in_dma_end;
  80         u32     in_dma_current;
  81
  82         u32     power_detect;
  83 #define PW_DETECT               0x04
  84 #define PW_RESETB               0x02
  85 #define PW_PULLUP               0x01
  86
  87         u8      _reserved0 [0x1d8];
  88
  89         /* endpoint registers */
  90         u32     ep_fifo [4];            /* 0x200 */
  91         u8      _reserved1 [0x10];
  92         u32     ep_mode [4];            /* only 1-3 valid */
  93         u8      _reserved2 [0x10];
  94
  95         u32     ep_status [4];
  96 #define EPxSTATUS_TOGGLE        0x40
  97 #define EPxSTATUS_SUSPEND       0x20
  98 #define EPxSTATUS_EP_MASK       (0x07<<2)
  99 #       define EPxSTATUS_EP_READY       (0<<2)
 100 #       define EPxSTATUS_EP_DATAIN      (1<<2)
 101 #       define EPxSTATUS_EP_FULL        (2<<2)
 102 #       define EPxSTATUS_EP_TX_ERR      (3<<2)
 103 #       define EPxSTATUS_EP_RX_ERR      (4<<2)
 104 #       define EPxSTATUS_EP_BUSY        (5<<2)
 105 #       define EPxSTATUS_EP_STALL       (6<<2)
 106 #       define EPxSTATUS_EP_INVALID     (7<<2)
 107 #define EPxSTATUS_FIFO_DISABLE  0x02
 108 #define EPxSTATUS_STAGE_ERROR   0x01
 109
 110         u8      _reserved3 [0x10];
 111         u32     EPxSizeLA[4];
 112 #define PACKET_ACTIVE           (1<<7)
 113 #define DATASIZE                0x7f
 114         u8      _reserved3a [0x10];
 115         u32     EPxSizeLB[4];           /* only 1,2 valid */
 116         u8      _reserved3b [0x10];
 117         u32     EPxSizeHA[4];           /* only 1-3 valid */
 118         u8      _reserved3c [0x10];
 119         u32     EPxSizeHB[4];           /* only 1,2 valid */
 120         u8      _reserved4[0x30];
 121
 122         /* SETUP packet contents */
 123         u32     bRequestType;           /* 0x300 */
 124         u32     bRequest;
 125         u32     wValueL;
 126         u32     wValueH;
 127         u32     wIndexL;
 128         u32     wIndexH;
 129         u32     wLengthL;
 130         u32     wLengthH;
 131
 132         /* command interaction/handshaking */
 133         u32     SetupRecv;              /* 0x320 */
 134         u32     CurrConfig;
 135         u32     StdRequest;
 136         u32     Request;
 137         u32     DataSet;
 138 #define DATASET_A(epnum)        (1<<(2*(epnum)))
 139 #define DATASET_B(epnum)        (2<<(2*(epnum)))
 140 #define DATASET_AB(epnum)       (3<<(2*(epnum)))
 141         u8      _reserved5[4];
 142
 143         u32     UsbState;
 144 #define USBSTATE_CONFIGURED     0x04
 145 #define USBSTATE_ADDRESSED      0x02
 146 #define USBSTATE_DEFAULT        0x01
 147
 148         u32     EOP;
 149
 150         u32     Command;                /* 0x340 */
 151 #define COMMAND_SETDATA0        2
 152 #define COMMAND_RESET           3
 153 #define COMMAND_STALL           4
 154 #define COMMAND_INVALID         5
 155 #define COMMAND_FIFO_DISABLE    7
 156 #define COMMAND_FIFO_ENABLE     8
 157 #define COMMAND_INIT_DESCRIPTOR 9
 158 #define COMMAND_FIFO_CLEAR      10      /* also stall */
 159 #define COMMAND_STALL_CLEAR     11
 160 #define COMMAND_EP(n)           ((n) << 4)
 161
 162         u32     EPxSingle;
 163         u8      _reserved6[4];
 164         u32     EPxBCS;
 165         u8      _reserved7[8];
 166         u32     IntControl;
 167 #define ICONTROL_STATUSNAK      1
 168         u8      _reserved8[4];
 169
 170         u32     reqmode;        // 0x360 standard request mode, low 8 bits
 171 #define G_REQMODE_SET_INTF      (1<<7)
 172 #define G_REQMODE_GET_INTF      (1<<6)
 173 #define G_REQMODE_SET_CONF      (1<<5)
 174 #define G_REQMODE_GET_CONF      (1<<4)
 175 #define G_REQMODE_GET_DESC      (1<<3)
 176 #define G_REQMODE_SET_FEAT      (1<<2)
 177 #define G_REQMODE_CLEAR_FEAT    (1<<1)
 178 #define G_REQMODE_GET_STATUS    (1<<0)
 179
 180         u32     ReqMode;
 181         u8      _reserved9[0x18];
 182         u32     PortStatus;             /* 0x380 */
 183         u8      _reserved10[8];
 184         u32     address;
 185         u32     buff_test;
 186         u8      _reserved11[4];
 187         u32     UsbReady;
 188         u8      _reserved12[4];
 189         u32     SetDescStall;           /* 0x3a0 */
 190         u8      _reserved13[0x45c];
 191
 192         /* hardware could handle limited GET_DESCRIPTOR duties */
 193 #define DESC_LEN        0x80
 194         u32     descriptors[DESC_LEN];  /* 0x800 */
 195         u8      _reserved14[0x600];
 196
 197 } __attribute__ ((packed));
 198
 199 #define MAX_FIFO_SIZE   64
 200 #define MAX_EP0_SIZE    8               /* ep0 fifo is bigger, though */
 201
 202
 203 /*-------------------------------------------------------------------------*/
 204
 205 /* DRIVER DATA STRUCTURES and UTILITIES */
 206
 207 struct goku_ep {
 208         struct usb_ep                           ep;
 209         struct goku_udc                         *dev;
 210         unsigned long                           irqs;
 211
 212         unsigned                                num:8,
 213                                                 dma:1,
 214                                                 is_in:1,
 215                                                 stopped:1;
 216
 217         /* analogous to a host-side qh */
 218         struct list_head                        queue;
 219         const struct usb_endpoint_descriptor    *desc;
 220
 221         u32 __iomem                             *reg_fifo;
 222         u32 __iomem                             *reg_mode;
 223         u32 __iomem                             *reg_status;
 224 };
 225
 226 struct goku_request {
 227         struct usb_request              req;
 228         struct list_head                queue;
 229
 230         unsigned                        mapped:1;
 231 };
 232
 233 enum ep0state {
 234         EP0_DISCONNECT,         /* no host */
 235         EP0_IDLE,               /* between STATUS ack and SETUP report */
 236         EP0_IN, EP0_OUT,        /* data stage */
 237         EP0_STATUS,             /* status stage */
 238         EP0_STALL,              /* data or status stages */
 239         EP0_SUSPEND,            /* usb suspend */
 240 };
 241
 242 struct goku_udc {
 243         /* each pci device provides one gadget, several endpoints */
 244         struct usb_gadget               gadget;
 245         spinlock_t                      lock;
 246         struct goku_ep                  ep[4];
 247         struct usb_gadget_driver        *driver;
 248
 249         enum ep0state                   ep0state;
 250         unsigned                        got_irq:1,
 251                                         got_region:1,
 252                                         req_config:1,
 253                                         configured:1,
 254                                         enabled:1,
 255                                         registered:1;
 256
 257         /* pci state used to access those endpoints */
 258         struct pci_dev                  *pdev;
 259         struct goku_udc_regs __iomem    *regs;
 260         u32                             int_enable;
 261
 262         /* statistics... */
 263         unsigned long                   irqs;
 264 };
 265
 266 /*-------------------------------------------------------------------------*/
 267
 268 #define xprintk(dev,level,fmt,args...) \
 269         printk(level "%s %s: " fmt , driver_name , \
 270                         pci_name(dev->pdev) , ## args)
 271
 272 #ifdef DEBUG
 273 #define DBG(dev,fmt,args...) \
 274         xprintk(dev , KERN_DEBUG , fmt , ## args)
 275 #else
 276 #define DBG(dev,fmt,args...) \
 277         do { } while (0)
 278 #endif /* DEBUG */
 279
 280 #ifdef VERBOSE
 281 #define VDBG DBG
 282 #else
 283 #define VDBG(dev,fmt,args...) \
 284         do { } while (0)
 285 #endif  /* VERBOSE */
 286
 287 #define ERROR(dev,fmt,args...) \
 288         xprintk(dev , KERN_ERR , fmt , ## args)
 289 #define WARNING(dev,fmt,args...) \
 290         xprintk(dev , KERN_WARNING , fmt , ## args)
 291 #define INFO(dev,fmt,args...) \
 292         xprintk(dev , KERN_INFO , fmt , ## args)
 293