1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Toshiba TC86C001 ("Goku-S") USB Device Controller driver 4 * 5 * Copyright (C) 2000-2002 Lineo 6 * by Stuart Lynne, Tom Rushworth, and Bruce Balden 7 * Copyright (C) 2002 Toshiba Corporation 8 * Copyright (C) 2003 MontaVista Software (source@mvista.com) 9 */ 10 11 /* 12 * PCI BAR 0 points to these registers. 13 */ 14 struct goku_udc_regs { 15 /* irq management */ 16 u32 int_status; /* 0x000 */ 17 u32 int_enable; 18 #define INT_SUSPEND 0x00001 /* or resume */ 19 #define INT_USBRESET 0x00002 20 #define INT_ENDPOINT0 0x00004 21 #define INT_SETUP 0x00008 22 #define INT_STATUS 0x00010 23 #define INT_STATUSNAK 0x00020 24 #define INT_EPxDATASET(n) (0x00020 << (n)) /* 0 < n < 4 */ 25 # define INT_EP1DATASET 0x00040 26 # define INT_EP2DATASET 0x00080 27 # define INT_EP3DATASET 0x00100 28 #define INT_EPnNAK(n) (0x00100 << (n)) /* 0 < n < 4 */ 29 # define INT_EP1NAK 0x00200 30 # define INT_EP2NAK 0x00400 31 # define INT_EP3NAK 0x00800 32 #define INT_SOF 0x01000 33 #define INT_ERR 0x02000 34 #define INT_MSTWRSET 0x04000 35 #define INT_MSTWREND 0x08000 36 #define INT_MSTWRTMOUT 0x10000 37 #define INT_MSTRDEND 0x20000 38 #define INT_SYSERROR 0x40000 39 #define INT_PWRDETECT 0x80000 40 41 #define INT_DEVWIDE \ 42 (INT_PWRDETECT|INT_SYSERROR/*|INT_ERR*/|INT_USBRESET|INT_SUSPEND) 43 #define INT_EP0 \ 44 (INT_SETUP|INT_ENDPOINT0/*|INT_STATUS*/|INT_STATUSNAK) 45 46 u32 dma_master; 47 #define MST_EOPB_DIS 0x0800 48 #define MST_EOPB_ENA 0x0400 49 #define MST_TIMEOUT_DIS 0x0200 50 #define MST_TIMEOUT_ENA 0x0100 51 #define MST_RD_EOPB 0x0080 /* write-only */ 52 #define MST_RD_RESET 0x0040 53 #define MST_WR_RESET 0x0020 54 #define MST_RD_ENA 0x0004 /* 1:start, 0:ignore */ 55 #define MST_WR_ENA 0x0002 /* 1:start, 0:ignore */ 56 #define MST_CONNECTION 0x0001 /* 0 for ep1out/ep2in */ 57 58 #define MST_R_BITS (MST_EOPB_DIS|MST_EOPB_ENA \ 59 |MST_RD_ENA|MST_RD_RESET) 60 #define MST_W_BITS (MST_TIMEOUT_DIS|MST_TIMEOUT_ENA \ 61 |MST_WR_ENA|MST_WR_RESET) 62 #define MST_RW_BITS (MST_R_BITS|MST_W_BITS \ 63 |MST_CONNECTION) 64 65 /* these values assume (dma_master & MST_CONNECTION) == 0 */ 66 #define UDC_MSTWR_ENDPOINT 1 67 #define UDC_MSTRD_ENDPOINT 2 68 69 /* dma master write */ 70 u32 out_dma_start; 71 u32 out_dma_end; 72 u32 out_dma_current; 73 74 /* dma master read */ 75 u32 in_dma_start; 76 u32 in_dma_end; 77 u32 in_dma_current; 78 79 u32 power_detect; 80 #define PW_DETECT 0x04 81 #define PW_RESETB 0x02 82 #define PW_PULLUP 0x01 83 84 u8 _reserved0 [0x1d8]; 85 86 /* endpoint registers */ 87 u32 ep_fifo [4]; /* 0x200 */ 88 u8 _reserved1 [0x10]; 89 u32 ep_mode [4]; /* only 1-3 valid */ 90 u8 _reserved2 [0x10]; 91 92 u32 ep_status [4]; 93 #define EPxSTATUS_TOGGLE 0x40 94 #define EPxSTATUS_SUSPEND 0x20 95 #define EPxSTATUS_EP_MASK (0x07<<2) 96 # define EPxSTATUS_EP_READY (0<<2) 97 # define EPxSTATUS_EP_DATAIN (1<<2) 98 # define EPxSTATUS_EP_FULL (2<<2) 99 # define EPxSTATUS_EP_TX_ERR (3<<2) 100 # define EPxSTATUS_EP_RX_ERR (4<<2) 101 # define EPxSTATUS_EP_BUSY (5<<2) 102 # define EPxSTATUS_EP_STALL (6<<2) 103 # define EPxSTATUS_EP_INVALID (7<<2) 104 #define EPxSTATUS_FIFO_DISABLE 0x02 105 #define EPxSTATUS_STAGE_ERROR 0x01 106 107 u8 _reserved3 [0x10]; 108 u32 EPxSizeLA[4]; 109 #define PACKET_ACTIVE (1<<7) 110 #define DATASIZE 0x7f 111 u8 _reserved3a [0x10]; 112 u32 EPxSizeLB[4]; /* only 1,2 valid */ 113 u8 _reserved3b [0x10]; 114 u32 EPxSizeHA[4]; /* only 1-3 valid */ 115 u8 _reserved3c [0x10]; 116 u32 EPxSizeHB[4]; /* only 1,2 valid */ 117 u8 _reserved4[0x30]; 118 119 /* SETUP packet contents */ 120 u32 bRequestType; /* 0x300 */ 121 u32 bRequest; 122 u32 wValueL; 123 u32 wValueH; 124 u32 wIndexL; 125 u32 wIndexH; 126 u32 wLengthL; 127 u32 wLengthH; 128 129 /* command interaction/handshaking */ 130 u32 SetupRecv; /* 0x320 */ 131 u32 CurrConfig; 132 u32 StdRequest; 133 u32 Request; 134 u32 DataSet; 135 #define DATASET_A(epnum) (1<<(2*(epnum))) 136 #define DATASET_B(epnum) (2<<(2*(epnum))) 137 #define DATASET_AB(epnum) (3<<(2*(epnum))) 138 u8 _reserved5[4]; 139 140 u32 UsbState; 141 #define USBSTATE_CONFIGURED 0x04 142 #define USBSTATE_ADDRESSED 0x02 143 #define USBSTATE_DEFAULT 0x01 144 145 u32 EOP; 146 147 u32 Command; /* 0x340 */ 148 #define COMMAND_SETDATA0 2 149 #define COMMAND_RESET 3 150 #define COMMAND_STALL 4 151 #define COMMAND_INVALID 5 152 #define COMMAND_FIFO_DISABLE 7 153 #define COMMAND_FIFO_ENABLE 8 154 #define COMMAND_INIT_DESCRIPTOR 9 155 #define COMMAND_FIFO_CLEAR 10 /* also stall */ 156 #define COMMAND_STALL_CLEAR 11 157 #define COMMAND_EP(n) ((n) << 4) 158 159 u32 EPxSingle; 160 u8 _reserved6[4]; 161 u32 EPxBCS; 162 u8 _reserved7[8]; 163 u32 IntControl; 164 #define ICONTROL_STATUSNAK 1 165 u8 _reserved8[4]; 166 167 u32 reqmode; // 0x360 standard request mode, low 8 bits 168 #define G_REQMODE_SET_INTF (1<<7) 169 #define G_REQMODE_GET_INTF (1<<6) 170 #define G_REQMODE_SET_CONF (1<<5) 171 #define G_REQMODE_GET_CONF (1<<4) 172 #define G_REQMODE_GET_DESC (1<<3) 173 #define G_REQMODE_SET_FEAT (1<<2) 174 #define G_REQMODE_CLEAR_FEAT (1<<1) 175 #define G_REQMODE_GET_STATUS (1<<0) 176 177 u32 ReqMode; 178 u8 _reserved9[0x18]; 179 u32 PortStatus; /* 0x380 */ 180 u8 _reserved10[8]; 181 u32 address; 182 u32 buff_test; 183 u8 _reserved11[4]; 184 u32 UsbReady; 185 u8 _reserved12[4]; 186 u32 SetDescStall; /* 0x3a0 */ 187 u8 _reserved13[0x45c]; 188 189 /* hardware could handle limited GET_DESCRIPTOR duties */ 190 #define DESC_LEN 0x80 191 u32 descriptors[DESC_LEN]; /* 0x800 */ 192 u8 _reserved14[0x600]; 193 194 } __attribute__ ((packed)); 195 196 #define MAX_FIFO_SIZE 64 197 #define MAX_EP0_SIZE 8 /* ep0 fifo is bigger, though */ 198 199 200 /*-------------------------------------------------------------------------*/ 201 202 /* DRIVER DATA STRUCTURES and UTILITIES */ 203 204 struct goku_ep { 205 struct usb_ep ep; 206 struct goku_udc *dev; 207 unsigned long irqs; 208 209 unsigned num:8, 210 dma:1, 211 is_in:1, 212 stopped:1; 213 214 /* analogous to a host-side qh */ 215 struct list_head queue; 216 217 u32 __iomem *reg_fifo; 218 u32 __iomem *reg_mode; 219 u32 __iomem *reg_status; 220 }; 221 222 struct goku_request { 223 struct usb_request req; 224 struct list_head queue; 225 226 unsigned mapped:1; 227 }; 228 229 enum ep0state { 230 EP0_DISCONNECT, /* no host */ 231 EP0_IDLE, /* between STATUS ack and SETUP report */ 232 EP0_IN, EP0_OUT, /* data stage */ 233 EP0_STATUS, /* status stage */ 234 EP0_STALL, /* data or status stages */ 235 EP0_SUSPEND, /* usb suspend */ 236 }; 237 238 struct goku_udc { 239 /* each pci device provides one gadget, several endpoints */ 240 struct usb_gadget gadget; 241 spinlock_t lock; 242 struct goku_ep ep[4]; 243 struct usb_gadget_driver *driver; 244 245 enum ep0state ep0state; 246 unsigned got_irq:1, 247 got_region:1, 248 req_config:1, 249 configured:1, 250 enabled:1; 251 252 /* pci state used to access those endpoints */ 253 struct pci_dev *pdev; 254 struct goku_udc_regs __iomem *regs; 255 u32 int_enable; 256 257 /* statistics... */ 258 unsigned long irqs; 259 }; 260 #define to_goku_udc(g) (container_of((g), struct goku_udc, gadget)) 261 262 /*-------------------------------------------------------------------------*/ 263 264 #define xprintk(dev,level,fmt,args...) \ 265 printk(level "%s %s: " fmt , driver_name , \ 266 pci_name(dev->pdev) , ## args) 267 268 #ifdef DEBUG 269 #define DBG(dev,fmt,args...) \ 270 xprintk(dev , KERN_DEBUG , fmt , ## args) 271 #else 272 #define DBG(dev,fmt,args...) \ 273 do { } while (0) 274 #endif /* DEBUG */ 275 276 #ifdef VERBOSE 277 #define VDBG DBG 278 #else 279 #define VDBG(dev,fmt,args...) \ 280 do { } while (0) 281 #endif /* VERBOSE */ 282 283 #define ERROR(dev,fmt,args...) \ 284 xprintk(dev , KERN_ERR , fmt , ## args) 285 #define WARNING(dev,fmt,args...) \ 286 xprintk(dev , KERN_WARNING , fmt , ## args) 287 #define INFO(dev,fmt,args...) \ 288 xprintk(dev , KERN_INFO , fmt , ## args) 289 290