| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * NetChip 2280 high/full speed USB device controller. |
| 3 | * Unlike many such controllers, this one talks PCI. |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com) |
| 8 | * Copyright (C) 2003 David Brownell |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | /*-------------------------------------------------------------------------*/ |
| 26 | |
| 27 | /* NET2280 MEMORY MAPPED REGISTERS |
| 28 | * |
| 29 | * The register layout came from the chip documentation, and the bit |
| 30 | * number definitions were extracted from chip specification. |
| 31 | * |
| 32 | * Use the shift operator ('<<') to build bit masks, with readl/writel |
| 33 | * to access the registers through PCI. |
| 34 | */ |
| 35 | |
| 36 | /* main registers, BAR0 + 0x0000 */ |
| 37 | struct net2280_regs { |
| 38 | // offset 0x0000 |
| 39 | u32 devinit; |
| 40 | #define LOCAL_CLOCK_FREQUENCY 8 |
| 41 | #define FORCE_PCI_RESET 7 |
| 42 | #define PCI_ID 6 |
| 43 | #define PCI_ENABLE 5 |
| 44 | #define FIFO_SOFT_RESET 4 |
| 45 | #define CFG_SOFT_RESET 3 |
| 46 | #define PCI_SOFT_RESET 2 |
| 47 | #define USB_SOFT_RESET 1 |
| 48 | #define M8051_RESET 0 |
| 49 | u32 eectl; |
| 50 | #define EEPROM_ADDRESS_WIDTH 23 |
| 51 | #define EEPROM_CHIP_SELECT_ACTIVE 22 |
| 52 | #define EEPROM_PRESENT 21 |
| 53 | #define EEPROM_VALID 20 |
| 54 | #define EEPROM_BUSY 19 |
| 55 | #define EEPROM_CHIP_SELECT_ENABLE 18 |
| 56 | #define EEPROM_BYTE_READ_START 17 |
| 57 | #define EEPROM_BYTE_WRITE_START 16 |
| 58 | #define EEPROM_READ_DATA 8 |
| 59 | #define EEPROM_WRITE_DATA 0 |
| 60 | u32 eeclkfreq; |
| 61 | u32 _unused0; |
| 62 | // offset 0x0010 |
| 63 | |
| 64 | u32 pciirqenb0; /* interrupt PCI master ... */ |
| 65 | #define SETUP_PACKET_INTERRUPT_ENABLE 7 |
| 66 | #define ENDPOINT_F_INTERRUPT_ENABLE 6 |
| 67 | #define ENDPOINT_E_INTERRUPT_ENABLE 5 |
| 68 | #define ENDPOINT_D_INTERRUPT_ENABLE 4 |
| 69 | #define ENDPOINT_C_INTERRUPT_ENABLE 3 |
| 70 | #define ENDPOINT_B_INTERRUPT_ENABLE 2 |
| 71 | #define ENDPOINT_A_INTERRUPT_ENABLE 1 |
| 72 | #define ENDPOINT_0_INTERRUPT_ENABLE 0 |
| 73 | u32 pciirqenb1; |
| 74 | #define PCI_INTERRUPT_ENABLE 31 |
| 75 | #define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27 |
| 76 | #define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26 |
| 77 | #define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25 |
| 78 | #define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20 |
| 79 | #define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19 |
| 80 | #define PCI_TARGET_ABORT_ASSERTED_INTERRUPT_ENABLE 18 |
| 81 | #define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17 |
| 82 | #define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16 |
| 83 | #define GPIO_INTERRUPT_ENABLE 13 |
| 84 | #define DMA_D_INTERRUPT_ENABLE 12 |
| 85 | #define DMA_C_INTERRUPT_ENABLE 11 |
| 86 | #define DMA_B_INTERRUPT_ENABLE 10 |
| 87 | #define DMA_A_INTERRUPT_ENABLE 9 |
| 88 | #define EEPROM_DONE_INTERRUPT_ENABLE 8 |
| 89 | #define VBUS_INTERRUPT_ENABLE 7 |
| 90 | #define CONTROL_STATUS_INTERRUPT_ENABLE 6 |
| 91 | #define ROOT_PORT_RESET_INTERRUPT_ENABLE 4 |
| 92 | #define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 |
| 93 | #define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2 |
| 94 | #define RESUME_INTERRUPT_ENABLE 1 |
| 95 | #define SOF_INTERRUPT_ENABLE 0 |
| 96 | u32 cpu_irqenb0; /* ... or onboard 8051 */ |
| 97 | #define SETUP_PACKET_INTERRUPT_ENABLE 7 |
| 98 | #define ENDPOINT_F_INTERRUPT_ENABLE 6 |
| 99 | #define ENDPOINT_E_INTERRUPT_ENABLE 5 |
| 100 | #define ENDPOINT_D_INTERRUPT_ENABLE 4 |
| 101 | #define ENDPOINT_C_INTERRUPT_ENABLE 3 |
| 102 | #define ENDPOINT_B_INTERRUPT_ENABLE 2 |
| 103 | #define ENDPOINT_A_INTERRUPT_ENABLE 1 |
| 104 | #define ENDPOINT_0_INTERRUPT_ENABLE 0 |
| 105 | u32 cpu_irqenb1; |
| 106 | #define CPU_INTERRUPT_ENABLE 31 |
| 107 | #define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27 |
| 108 | #define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26 |
| 109 | #define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25 |
| 110 | #define PCI_INTA_INTERRUPT_ENABLE 24 |
| 111 | #define PCI_PME_INTERRUPT_ENABLE 23 |
| 112 | #define PCI_SERR_INTERRUPT_ENABLE 22 |
| 113 | #define PCI_PERR_INTERRUPT_ENABLE 21 |
| 114 | #define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20 |
| 115 | #define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19 |
| 116 | #define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17 |
| 117 | #define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16 |
| 118 | #define GPIO_INTERRUPT_ENABLE 13 |
| 119 | #define DMA_D_INTERRUPT_ENABLE 12 |
| 120 | #define DMA_C_INTERRUPT_ENABLE 11 |
| 121 | #define DMA_B_INTERRUPT_ENABLE 10 |
| 122 | #define DMA_A_INTERRUPT_ENABLE 9 |
| 123 | #define EEPROM_DONE_INTERRUPT_ENABLE 8 |
| 124 | #define VBUS_INTERRUPT_ENABLE 7 |
| 125 | #define CONTROL_STATUS_INTERRUPT_ENABLE 6 |
| 126 | #define ROOT_PORT_RESET_INTERRUPT_ENABLE 4 |
| 127 | #define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 |
| 128 | #define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2 |
| 129 | #define RESUME_INTERRUPT_ENABLE 1 |
| 130 | #define SOF_INTERRUPT_ENABLE 0 |
| 131 | |
| 132 | // offset 0x0020 |
| 133 | u32 _unused1; |
| 134 | u32 usbirqenb1; |
| 135 | #define USB_INTERRUPT_ENABLE 31 |
| 136 | #define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27 |
| 137 | #define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26 |
| 138 | #define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25 |
| 139 | #define PCI_INTA_INTERRUPT_ENABLE 24 |
| 140 | #define PCI_PME_INTERRUPT_ENABLE 23 |
| 141 | #define PCI_SERR_INTERRUPT_ENABLE 22 |
| 142 | #define PCI_PERR_INTERRUPT_ENABLE 21 |
| 143 | #define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20 |
| 144 | #define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19 |
| 145 | #define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17 |
| 146 | #define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16 |
| 147 | #define GPIO_INTERRUPT_ENABLE 13 |
| 148 | #define DMA_D_INTERRUPT_ENABLE 12 |
| 149 | #define DMA_C_INTERRUPT_ENABLE 11 |
| 150 | #define DMA_B_INTERRUPT_ENABLE 10 |
| 151 | #define DMA_A_INTERRUPT_ENABLE 9 |
| 152 | #define EEPROM_DONE_INTERRUPT_ENABLE 8 |
| 153 | #define VBUS_INTERRUPT_ENABLE 7 |
| 154 | #define CONTROL_STATUS_INTERRUPT_ENABLE 6 |
| 155 | #define ROOT_PORT_RESET_INTERRUPT_ENABLE 4 |
| 156 | #define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 |
| 157 | #define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2 |
| 158 | #define RESUME_INTERRUPT_ENABLE 1 |
| 159 | #define SOF_INTERRUPT_ENABLE 0 |
| 160 | u32 irqstat0; |
| 161 | #define INTA_ASSERTED 12 |
| 162 | #define SETUP_PACKET_INTERRUPT 7 |
| 163 | #define ENDPOINT_F_INTERRUPT 6 |
| 164 | #define ENDPOINT_E_INTERRUPT 5 |
| 165 | #define ENDPOINT_D_INTERRUPT 4 |
| 166 | #define ENDPOINT_C_INTERRUPT 3 |
| 167 | #define ENDPOINT_B_INTERRUPT 2 |
| 168 | #define ENDPOINT_A_INTERRUPT 1 |
| 169 | #define ENDPOINT_0_INTERRUPT 0 |
| 170 | u32 irqstat1; |
| 171 | #define POWER_STATE_CHANGE_INTERRUPT 27 |
| 172 | #define PCI_ARBITER_TIMEOUT_INTERRUPT 26 |
| 173 | #define PCI_PARITY_ERROR_INTERRUPT 25 |
| 174 | #define PCI_INTA_INTERRUPT 24 |
| 175 | #define PCI_PME_INTERRUPT 23 |
| 176 | #define PCI_SERR_INTERRUPT 22 |
| 177 | #define PCI_PERR_INTERRUPT 21 |
| 178 | #define PCI_MASTER_ABORT_RECEIVED_INTERRUPT 20 |
| 179 | #define PCI_TARGET_ABORT_RECEIVED_INTERRUPT 19 |
| 180 | #define PCI_RETRY_ABORT_INTERRUPT 17 |
| 181 | #define PCI_MASTER_CYCLE_DONE_INTERRUPT 16 |
| Guennadi Liakhovetski | 950ee4c | 2006-03-19 20:49:14 +0100 | [diff] [blame] | 182 | #define SOF_DOWN_INTERRUPT 14 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | #define GPIO_INTERRUPT 13 |
| 184 | #define DMA_D_INTERRUPT 12 |
| 185 | #define DMA_C_INTERRUPT 11 |
| 186 | #define DMA_B_INTERRUPT 10 |
| 187 | #define DMA_A_INTERRUPT 9 |
| 188 | #define EEPROM_DONE_INTERRUPT 8 |
| 189 | #define VBUS_INTERRUPT 7 |
| 190 | #define CONTROL_STATUS_INTERRUPT 6 |
| 191 | #define ROOT_PORT_RESET_INTERRUPT 4 |
| 192 | #define SUSPEND_REQUEST_INTERRUPT 3 |
| 193 | #define SUSPEND_REQUEST_CHANGE_INTERRUPT 2 |
| 194 | #define RESUME_INTERRUPT 1 |
| 195 | #define SOF_INTERRUPT 0 |
| 196 | // offset 0x0030 |
| 197 | u32 idxaddr; |
| 198 | u32 idxdata; |
| 199 | u32 fifoctl; |
| 200 | #define PCI_BASE2_RANGE 16 |
| 201 | #define IGNORE_FIFO_AVAILABILITY 3 |
| 202 | #define PCI_BASE2_SELECT 2 |
| 203 | #define FIFO_CONFIGURATION_SELECT 0 |
| 204 | u32 _unused2; |
| 205 | // offset 0x0040 |
| 206 | u32 memaddr; |
| 207 | #define START 28 |
| 208 | #define DIRECTION 27 |
| 209 | #define FIFO_DIAGNOSTIC_SELECT 24 |
| 210 | #define MEMORY_ADDRESS 0 |
| 211 | u32 memdata0; |
| 212 | u32 memdata1; |
| 213 | u32 _unused3; |
| 214 | // offset 0x0050 |
| 215 | u32 gpioctl; |
| 216 | #define GPIO3_LED_SELECT 12 |
| 217 | #define GPIO3_INTERRUPT_ENABLE 11 |
| 218 | #define GPIO2_INTERRUPT_ENABLE 10 |
| 219 | #define GPIO1_INTERRUPT_ENABLE 9 |
| 220 | #define GPIO0_INTERRUPT_ENABLE 8 |
| 221 | #define GPIO3_OUTPUT_ENABLE 7 |
| 222 | #define GPIO2_OUTPUT_ENABLE 6 |
| 223 | #define GPIO1_OUTPUT_ENABLE 5 |
| 224 | #define GPIO0_OUTPUT_ENABLE 4 |
| 225 | #define GPIO3_DATA 3 |
| 226 | #define GPIO2_DATA 2 |
| 227 | #define GPIO1_DATA 1 |
| 228 | #define GPIO0_DATA 0 |
| 229 | u32 gpiostat; |
| 230 | #define GPIO3_INTERRUPT 3 |
| 231 | #define GPIO2_INTERRUPT 2 |
| 232 | #define GPIO1_INTERRUPT 1 |
| 233 | #define GPIO0_INTERRUPT 0 |
| 234 | } __attribute__ ((packed)); |
| 235 | |
| 236 | /* usb control, BAR0 + 0x0080 */ |
| 237 | struct net2280_usb_regs { |
| 238 | // offset 0x0080 |
| 239 | u32 stdrsp; |
| 240 | #define STALL_UNSUPPORTED_REQUESTS 31 |
| 241 | #define SET_TEST_MODE 16 |
| 242 | #define GET_OTHER_SPEED_CONFIGURATION 15 |
| 243 | #define GET_DEVICE_QUALIFIER 14 |
| 244 | #define SET_ADDRESS 13 |
| 245 | #define ENDPOINT_SET_CLEAR_HALT 12 |
| 246 | #define DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP 11 |
| 247 | #define GET_STRING_DESCRIPTOR_2 10 |
| 248 | #define GET_STRING_DESCRIPTOR_1 9 |
| 249 | #define GET_STRING_DESCRIPTOR_0 8 |
| 250 | #define GET_SET_INTERFACE 6 |
| 251 | #define GET_SET_CONFIGURATION 5 |
| 252 | #define GET_CONFIGURATION_DESCRIPTOR 4 |
| 253 | #define GET_DEVICE_DESCRIPTOR 3 |
| 254 | #define GET_ENDPOINT_STATUS 2 |
| 255 | #define GET_INTERFACE_STATUS 1 |
| 256 | #define GET_DEVICE_STATUS 0 |
| 257 | u32 prodvendid; |
| 258 | #define PRODUCT_ID 16 |
| 259 | #define VENDOR_ID 0 |
| 260 | u32 relnum; |
| 261 | u32 usbctl; |
| 262 | #define SERIAL_NUMBER_INDEX 16 |
| 263 | #define PRODUCT_ID_STRING_ENABLE 13 |
| 264 | #define VENDOR_ID_STRING_ENABLE 12 |
| 265 | #define USB_ROOT_PORT_WAKEUP_ENABLE 11 |
| 266 | #define VBUS_PIN 10 |
| 267 | #define TIMED_DISCONNECT 9 |
| 268 | #define SUSPEND_IMMEDIATELY 7 |
| 269 | #define SELF_POWERED_USB_DEVICE 6 |
| 270 | #define REMOTE_WAKEUP_SUPPORT 5 |
| 271 | #define PME_POLARITY 4 |
| 272 | #define USB_DETECT_ENABLE 3 |
| 273 | #define PME_WAKEUP_ENABLE 2 |
| 274 | #define DEVICE_REMOTE_WAKEUP_ENABLE 1 |
| 275 | #define SELF_POWERED_STATUS 0 |
| 276 | // offset 0x0090 |
| 277 | u32 usbstat; |
| 278 | #define HIGH_SPEED 7 |
| 279 | #define FULL_SPEED 6 |
| 280 | #define GENERATE_RESUME 5 |
| 281 | #define GENERATE_DEVICE_REMOTE_WAKEUP 4 |
| 282 | u32 xcvrdiag; |
| 283 | #define FORCE_HIGH_SPEED_MODE 31 |
| 284 | #define FORCE_FULL_SPEED_MODE 30 |
| 285 | #define USB_TEST_MODE 24 |
| 286 | #define LINE_STATE 16 |
| 287 | #define TRANSCEIVER_OPERATION_MODE 2 |
| 288 | #define TRANSCEIVER_SELECT 1 |
| 289 | #define TERMINATION_SELECT 0 |
| 290 | u32 setup0123; |
| 291 | u32 setup4567; |
| 292 | // offset 0x0090 |
| 293 | u32 _unused0; |
| 294 | u32 ouraddr; |
| 295 | #define FORCE_IMMEDIATE 7 |
| 296 | #define OUR_USB_ADDRESS 0 |
| 297 | u32 ourconfig; |
| 298 | } __attribute__ ((packed)); |
| 299 | |
| 300 | /* pci control, BAR0 + 0x0100 */ |
| 301 | struct net2280_pci_regs { |
| 302 | // offset 0x0100 |
| 303 | u32 pcimstctl; |
| 304 | #define PCI_ARBITER_PARK_SELECT 13 |
| 305 | #define PCI_MULTI LEVEL_ARBITER 12 |
| 306 | #define PCI_RETRY_ABORT_ENABLE 11 |
| 307 | #define DMA_MEMORY_WRITE_AND_INVALIDATE_ENABLE 10 |
| 308 | #define DMA_READ_MULTIPLE_ENABLE 9 |
| 309 | #define DMA_READ_LINE_ENABLE 8 |
| 310 | #define PCI_MASTER_COMMAND_SELECT 6 |
| 311 | #define MEM_READ_OR_WRITE 0 |
| 312 | #define IO_READ_OR_WRITE 1 |
| 313 | #define CFG_READ_OR_WRITE 2 |
| 314 | #define PCI_MASTER_START 5 |
| 315 | #define PCI_MASTER_READ_WRITE 4 |
| 316 | #define PCI_MASTER_WRITE 0 |
| 317 | #define PCI_MASTER_READ 1 |
| 318 | #define PCI_MASTER_BYTE_WRITE_ENABLES 0 |
| 319 | u32 pcimstaddr; |
| 320 | u32 pcimstdata; |
| 321 | u32 pcimststat; |
| 322 | #define PCI_ARBITER_CLEAR 2 |
| 323 | #define PCI_EXTERNAL_ARBITER 1 |
| 324 | #define PCI_HOST_MODE 0 |
| 325 | } __attribute__ ((packed)); |
| 326 | |
| 327 | /* dma control, BAR0 + 0x0180 ... array of four structs like this, |
| 328 | * for channels 0..3. see also struct net2280_dma: descriptor |
| 329 | * that can be loaded into some of these registers. |
| 330 | */ |
| 331 | struct net2280_dma_regs { /* [11.7] */ |
| 332 | // offset 0x0180, 0x01a0, 0x01c0, 0x01e0, |
| 333 | u32 dmactl; |
| 334 | #define DMA_SCATTER_GATHER_DONE_INTERRUPT_ENABLE 25 |
| 335 | #define DMA_CLEAR_COUNT_ENABLE 21 |
| 336 | #define DESCRIPTOR_POLLING_RATE 19 |
| 337 | #define POLL_CONTINUOUS 0 |
| 338 | #define POLL_1_USEC 1 |
| 339 | #define POLL_100_USEC 2 |
| 340 | #define POLL_1_MSEC 3 |
| 341 | #define DMA_VALID_BIT_POLLING_ENABLE 18 |
| 342 | #define DMA_VALID_BIT_ENABLE 17 |
| 343 | #define DMA_SCATTER_GATHER_ENABLE 16 |
| 344 | #define DMA_OUT_AUTO_START_ENABLE 4 |
| 345 | #define DMA_PREEMPT_ENABLE 3 |
| 346 | #define DMA_FIFO_VALIDATE 2 |
| 347 | #define DMA_ENABLE 1 |
| 348 | #define DMA_ADDRESS_HOLD 0 |
| 349 | u32 dmastat; |
| Guennadi Liakhovetski | 950ee4c | 2006-03-19 20:49:14 +0100 | [diff] [blame] | 350 | #define DMA_ABORT_DONE_INTERRUPT 27 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | #define DMA_SCATTER_GATHER_DONE_INTERRUPT 25 |
| 352 | #define DMA_TRANSACTION_DONE_INTERRUPT 24 |
| 353 | #define DMA_ABORT 1 |
| 354 | #define DMA_START 0 |
| 355 | u32 _unused0 [2]; |
| 356 | // offset 0x0190, 0x01b0, 0x01d0, 0x01f0, |
| 357 | u32 dmacount; |
| 358 | #define VALID_BIT 31 |
| 359 | #define DMA_DIRECTION 30 |
| 360 | #define DMA_DONE_INTERRUPT_ENABLE 29 |
| 361 | #define END_OF_CHAIN 28 |
| 362 | #define DMA_BYTE_COUNT_MASK ((1<<24)-1) |
| 363 | #define DMA_BYTE_COUNT 0 |
| 364 | u32 dmaaddr; |
| 365 | u32 dmadesc; |
| 366 | u32 _unused1; |
| 367 | } __attribute__ ((packed)); |
| 368 | |
| 369 | /* dedicated endpoint registers, BAR0 + 0x0200 */ |
| 370 | |
| 371 | struct net2280_dep_regs { /* [11.8] */ |
| 372 | // offset 0x0200, 0x0210, 0x220, 0x230, 0x240 |
| 373 | u32 dep_cfg; |
| 374 | // offset 0x0204, 0x0214, 0x224, 0x234, 0x244 |
| 375 | u32 dep_rsp; |
| 376 | u32 _unused [2]; |
| 377 | } __attribute__ ((packed)); |
| 378 | |
| 379 | /* configurable endpoint registers, BAR0 + 0x0300 ... array of seven structs |
| 380 | * like this, for ep0 then the configurable endpoints A..F |
| 381 | * ep0 reserved for control; E and F have only 64 bytes of fifo |
| 382 | */ |
| 383 | struct net2280_ep_regs { /* [11.9] */ |
| 384 | // offset 0x0300, 0x0320, 0x0340, 0x0360, 0x0380, 0x03a0, 0x03c0 |
| 385 | u32 ep_cfg; |
| 386 | #define ENDPOINT_BYTE_COUNT 16 |
| 387 | #define ENDPOINT_ENABLE 10 |
| 388 | #define ENDPOINT_TYPE 8 |
| 389 | #define ENDPOINT_DIRECTION 7 |
| 390 | #define ENDPOINT_NUMBER 0 |
| 391 | u32 ep_rsp; |
| 392 | #define SET_NAK_OUT_PACKETS 15 |
| 393 | #define SET_EP_HIDE_STATUS_PHASE 14 |
| 394 | #define SET_EP_FORCE_CRC_ERROR 13 |
| 395 | #define SET_INTERRUPT_MODE 12 |
| 396 | #define SET_CONTROL_STATUS_PHASE_HANDSHAKE 11 |
| 397 | #define SET_NAK_OUT_PACKETS_MODE 10 |
| 398 | #define SET_ENDPOINT_TOGGLE 9 |
| 399 | #define SET_ENDPOINT_HALT 8 |
| 400 | #define CLEAR_NAK_OUT_PACKETS 7 |
| 401 | #define CLEAR_EP_HIDE_STATUS_PHASE 6 |
| 402 | #define CLEAR_EP_FORCE_CRC_ERROR 5 |
| 403 | #define CLEAR_INTERRUPT_MODE 4 |
| 404 | #define CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE 3 |
| 405 | #define CLEAR_NAK_OUT_PACKETS_MODE 2 |
| 406 | #define CLEAR_ENDPOINT_TOGGLE 1 |
| 407 | #define CLEAR_ENDPOINT_HALT 0 |
| 408 | u32 ep_irqenb; |
| 409 | #define SHORT_PACKET_OUT_DONE_INTERRUPT_ENABLE 6 |
| 410 | #define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 5 |
| 411 | #define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3 |
| 412 | #define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2 |
| 413 | #define DATA_OUT_PING_TOKEN_INTERRUPT_ENABLE 1 |
| 414 | #define DATA_IN_TOKEN_INTERRUPT_ENABLE 0 |
| 415 | u32 ep_stat; |
| 416 | #define FIFO_VALID_COUNT 24 |
| 417 | #define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 22 |
| 418 | #define TIMEOUT 21 |
| 419 | #define USB_STALL_SENT 20 |
| 420 | #define USB_IN_NAK_SENT 19 |
| 421 | #define USB_IN_ACK_RCVD 18 |
| 422 | #define USB_OUT_PING_NAK_SENT 17 |
| 423 | #define USB_OUT_ACK_SENT 16 |
| 424 | #define FIFO_OVERFLOW 13 |
| 425 | #define FIFO_UNDERFLOW 12 |
| 426 | #define FIFO_FULL 11 |
| 427 | #define FIFO_EMPTY 10 |
| 428 | #define FIFO_FLUSH 9 |
| 429 | #define SHORT_PACKET_OUT_DONE_INTERRUPT 6 |
| 430 | #define SHORT_PACKET_TRANSFERRED_INTERRUPT 5 |
| 431 | #define NAK_OUT_PACKETS 4 |
| 432 | #define DATA_PACKET_RECEIVED_INTERRUPT 3 |
| 433 | #define DATA_PACKET_TRANSMITTED_INTERRUPT 2 |
| 434 | #define DATA_OUT_PING_TOKEN_INTERRUPT 1 |
| 435 | #define DATA_IN_TOKEN_INTERRUPT 0 |
| 436 | // offset 0x0310, 0x0330, 0x0350, 0x0370, 0x0390, 0x03b0, 0x03d0 |
| 437 | u32 ep_avail; |
| 438 | u32 ep_data; |
| 439 | u32 _unused0 [2]; |
| 440 | } __attribute__ ((packed)); |
| 441 | |
| 442 | /*-------------------------------------------------------------------------*/ |
| 443 | |
| 444 | #ifdef __KERNEL__ |
| 445 | |
| 446 | /* indexed registers [11.10] are accessed indirectly |
| 447 | * caller must own the device lock. |
| 448 | */ |
| 449 | |
| 450 | static inline u32 |
| 451 | get_idx_reg (struct net2280_regs __iomem *regs, u32 index) |
| 452 | { |
| 453 | writel (index, ®s->idxaddr); |
| 454 | /* NOTE: synchs device/cpu memory views */ |
| 455 | return readl (®s->idxdata); |
| 456 | } |
| 457 | |
| 458 | static inline void |
| 459 | set_idx_reg (struct net2280_regs __iomem *regs, u32 index, u32 value) |
| 460 | { |
| 461 | writel (index, ®s->idxaddr); |
| 462 | writel (value, ®s->idxdata); |
| 463 | /* posted, may not be visible yet */ |
| 464 | } |
| 465 | |
| 466 | #endif /* __KERNEL__ */ |
| 467 | |
| 468 | |
| 469 | #define REG_DIAG 0x0 |
| 470 | #define RETRY_COUNTER 16 |
| 471 | #define FORCE_PCI_SERR 11 |
| 472 | #define FORCE_PCI_INTERRUPT 10 |
| 473 | #define FORCE_USB_INTERRUPT 9 |
| 474 | #define FORCE_CPU_INTERRUPT 8 |
| 475 | #define ILLEGAL_BYTE_ENABLES 5 |
| 476 | #define FAST_TIMES 4 |
| 477 | #define FORCE_RECEIVE_ERROR 2 |
| 478 | #define FORCE_TRANSMIT_CRC_ERROR 0 |
| 479 | #define REG_FRAME 0x02 /* from last sof */ |
| 480 | #define REG_CHIPREV 0x03 /* in bcd */ |
| 481 | #define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */ |
| 482 | |
| 483 | #define CHIPREV_1 0x0100 |
| 484 | #define CHIPREV_1A 0x0110 |
| 485 | |
| 486 | #ifdef __KERNEL__ |
| 487 | |
| 488 | /* ep a-f highspeed and fullspeed maxpacket, addresses |
| 489 | * computed from ep->num |
| 490 | */ |
| 491 | #define REG_EP_MAXPKT(dev,num) (((num) + 1) * 0x10 + \ |
| 492 | (((dev)->gadget.speed == USB_SPEED_HIGH) ? 0 : 1)) |
| 493 | |
| 494 | /*-------------------------------------------------------------------------*/ |
| 495 | |
| 496 | /* [8.3] for scatter/gather i/o |
| 497 | * use struct net2280_dma_regs bitfields |
| 498 | */ |
| 499 | struct net2280_dma { |
| 500 | __le32 dmacount; |
| 501 | __le32 dmaaddr; /* the buffer */ |
| 502 | __le32 dmadesc; /* next dma descriptor */ |
| 503 | __le32 _reserved; |
| 504 | } __attribute__ ((aligned (16))); |
| 505 | |
| 506 | /*-------------------------------------------------------------------------*/ |
| 507 | |
| 508 | /* DRIVER DATA STRUCTURES and UTILITIES */ |
| 509 | |
| 510 | struct net2280_ep { |
| 511 | struct usb_ep ep; |
| 512 | struct net2280_ep_regs __iomem *regs; |
| 513 | struct net2280_dma_regs __iomem *dma; |
| 514 | struct net2280_dma *dummy; |
| 515 | dma_addr_t td_dma; /* of dummy */ |
| 516 | struct net2280 *dev; |
| 517 | unsigned long irqs; |
| 518 | |
| 519 | /* analogous to a host-side qh */ |
| 520 | struct list_head queue; |
| 521 | const struct usb_endpoint_descriptor *desc; |
| 522 | unsigned num : 8, |
| 523 | fifo_size : 12, |
| 524 | in_fifo_validate : 1, |
| 525 | out_overflow : 1, |
| 526 | stopped : 1, |
| 527 | is_in : 1, |
| 528 | is_iso : 1; |
| 529 | }; |
| 530 | |
| 531 | static inline void allow_status (struct net2280_ep *ep) |
| 532 | { |
| 533 | /* ep0 only */ |
| 534 | writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |
| 535 | | (1 << CLEAR_NAK_OUT_PACKETS) |
| 536 | | (1 << CLEAR_NAK_OUT_PACKETS_MODE) |
| 537 | , &ep->regs->ep_rsp); |
| 538 | ep->stopped = 1; |
| 539 | } |
| 540 | |
| 541 | /* count (<= 4) bytes in the next fifo write will be valid */ |
| 542 | static inline void set_fifo_bytecount (struct net2280_ep *ep, unsigned count) |
| 543 | { |
| 544 | writeb (count, 2 + (u8 __iomem *) &ep->regs->ep_cfg); |
| 545 | } |
| 546 | |
| 547 | struct net2280_request { |
| 548 | struct usb_request req; |
| 549 | struct net2280_dma *td; |
| 550 | dma_addr_t td_dma; |
| 551 | struct list_head queue; |
| 552 | unsigned mapped : 1, |
| 553 | valid : 1; |
| 554 | }; |
| 555 | |
| 556 | struct net2280 { |
| 557 | /* each pci device provides one gadget, several endpoints */ |
| 558 | struct usb_gadget gadget; |
| 559 | spinlock_t lock; |
| 560 | struct net2280_ep ep [7]; |
| 561 | struct usb_gadget_driver *driver; |
| 562 | unsigned enabled : 1, |
| 563 | protocol_stall : 1, |
| 564 | softconnect : 1, |
| 565 | got_irq : 1, |
| 566 | region : 1; |
| 567 | u16 chiprev; |
| 568 | |
| 569 | /* pci state used to access those endpoints */ |
| 570 | struct pci_dev *pdev; |
| 571 | struct net2280_regs __iomem *regs; |
| 572 | struct net2280_usb_regs __iomem *usb; |
| 573 | struct net2280_pci_regs __iomem *pci; |
| 574 | struct net2280_dma_regs __iomem *dma; |
| 575 | struct net2280_dep_regs __iomem *dep; |
| 576 | struct net2280_ep_regs __iomem *epregs; |
| 577 | |
| 578 | struct pci_pool *requests; |
| 579 | // statistics... |
| 580 | }; |
| 581 | |
| 582 | static inline void set_halt (struct net2280_ep *ep) |
| 583 | { |
| 584 | /* ep0 and bulk/intr endpoints */ |
| 585 | writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |
| 586 | /* set NAK_OUT for erratum 0114 */ |
| 587 | | ((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS) |
| 588 | | (1 << SET_ENDPOINT_HALT) |
| 589 | , &ep->regs->ep_rsp); |
| 590 | } |
| 591 | |
| 592 | static inline void clear_halt (struct net2280_ep *ep) |
| 593 | { |
| 594 | /* ep0 and bulk/intr endpoints */ |
| 595 | writel ( (1 << CLEAR_ENDPOINT_HALT) |
| 596 | | (1 << CLEAR_ENDPOINT_TOGGLE) |
| 597 | /* unless the gadget driver left a short packet in the |
| 598 | * fifo, this reverses the erratum 0114 workaround. |
| 599 | */ |
| 600 | | ((ep->dev->chiprev == CHIPREV_1) << CLEAR_NAK_OUT_PACKETS) |
| 601 | , &ep->regs->ep_rsp); |
| 602 | } |
| 603 | |
| 604 | #ifdef USE_RDK_LEDS |
| 605 | |
| 606 | static inline void net2280_led_init (struct net2280 *dev) |
| 607 | { |
| 608 | /* LED3 (green) is on during USB activity. note erratum 0113. */ |
| 609 | writel ((1 << GPIO3_LED_SELECT) |
| 610 | | (1 << GPIO3_OUTPUT_ENABLE) |
| 611 | | (1 << GPIO2_OUTPUT_ENABLE) |
| 612 | | (1 << GPIO1_OUTPUT_ENABLE) |
| 613 | | (1 << GPIO0_OUTPUT_ENABLE) |
| 614 | , &dev->regs->gpioctl); |
| 615 | } |
| 616 | |
| 617 | /* indicate speed with bi-color LED 0/1 */ |
| 618 | static inline |
| 619 | void net2280_led_speed (struct net2280 *dev, enum usb_device_speed speed) |
| 620 | { |
| 621 | u32 val = readl (&dev->regs->gpioctl); |
| 622 | switch (speed) { |
| 623 | case USB_SPEED_HIGH: /* green */ |
| 624 | val &= ~(1 << GPIO0_DATA); |
| 625 | val |= (1 << GPIO1_DATA); |
| 626 | break; |
| 627 | case USB_SPEED_FULL: /* red */ |
| 628 | val &= ~(1 << GPIO1_DATA); |
| 629 | val |= (1 << GPIO0_DATA); |
| 630 | break; |
| 631 | default: /* (off/black) */ |
| 632 | val &= ~((1 << GPIO1_DATA) | (1 << GPIO0_DATA)); |
| 633 | break; |
| 634 | } |
| 635 | writel (val, &dev->regs->gpioctl); |
| 636 | } |
| 637 | |
| 638 | /* indicate power with LED 2 */ |
| 639 | static inline void net2280_led_active (struct net2280 *dev, int is_active) |
| 640 | { |
| 641 | u32 val = readl (&dev->regs->gpioctl); |
| 642 | |
| 643 | // FIXME this LED never seems to turn on. |
| 644 | if (is_active) |
| 645 | val |= GPIO2_DATA; |
| 646 | else |
| 647 | val &= ~GPIO2_DATA; |
| 648 | writel (val, &dev->regs->gpioctl); |
| 649 | } |
| 650 | static inline void net2280_led_shutdown (struct net2280 *dev) |
| 651 | { |
| 652 | /* turn off all four GPIO*_DATA bits */ |
| 653 | writel (readl (&dev->regs->gpioctl) & ~0x0f, |
| 654 | &dev->regs->gpioctl); |
| 655 | } |
| 656 | |
| 657 | #else |
| 658 | |
| 659 | #define net2280_led_init(dev) do { } while (0) |
| 660 | #define net2280_led_speed(dev, speed) do { } while (0) |
| 661 | #define net2280_led_shutdown(dev) do { } while (0) |
| 662 | |
| 663 | #endif |
| 664 | |
| 665 | /*-------------------------------------------------------------------------*/ |
| 666 | |
| 667 | #define xprintk(dev,level,fmt,args...) \ |
| 668 | printk(level "%s %s: " fmt , driver_name , \ |
| 669 | pci_name(dev->pdev) , ## args) |
| 670 | |
| 671 | #ifdef DEBUG |
| 672 | #undef DEBUG |
| 673 | #define DEBUG(dev,fmt,args...) \ |
| 674 | xprintk(dev , KERN_DEBUG , fmt , ## args) |
| 675 | #else |
| 676 | #define DEBUG(dev,fmt,args...) \ |
| 677 | do { } while (0) |
| 678 | #endif /* DEBUG */ |
| 679 | |
| 680 | #ifdef VERBOSE |
| 681 | #define VDEBUG DEBUG |
| 682 | #else |
| 683 | #define VDEBUG(dev,fmt,args...) \ |
| 684 | do { } while (0) |
| 685 | #endif /* VERBOSE */ |
| 686 | |
| 687 | #define ERROR(dev,fmt,args...) \ |
| 688 | xprintk(dev , KERN_ERR , fmt , ## args) |
| 689 | #define WARN(dev,fmt,args...) \ |
| 690 | xprintk(dev , KERN_WARNING , fmt , ## args) |
| 691 | #define INFO(dev,fmt,args...) \ |
| 692 | xprintk(dev , KERN_INFO , fmt , ## args) |
| 693 | |
| 694 | /*-------------------------------------------------------------------------*/ |
| 695 | |
| 696 | static inline void start_out_naking (struct net2280_ep *ep) |
| 697 | { |
| 698 | /* NOTE: hardware races lurk here, and PING protocol issues */ |
| 699 | writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp); |
| 700 | /* synch with device */ |
| 701 | readl (&ep->regs->ep_rsp); |
| 702 | } |
| 703 | |
| 704 | #ifdef DEBUG |
| 705 | static inline void assert_out_naking (struct net2280_ep *ep, const char *where) |
| 706 | { |
| 707 | u32 tmp = readl (&ep->regs->ep_stat); |
| 708 | |
| 709 | if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) { |
| 710 | DEBUG (ep->dev, "%s %s %08x !NAK\n", |
| 711 | ep->ep.name, where, tmp); |
| 712 | writel ((1 << SET_NAK_OUT_PACKETS), |
| 713 | &ep->regs->ep_rsp); |
| 714 | } |
| 715 | } |
| 716 | #define ASSERT_OUT_NAKING(ep) assert_out_naking(ep,__FUNCTION__) |
| 717 | #else |
| 718 | #define ASSERT_OUT_NAKING(ep) do {} while (0) |
| 719 | #endif |
| 720 | |
| 721 | static inline void stop_out_naking (struct net2280_ep *ep) |
| 722 | { |
| 723 | u32 tmp; |
| 724 | |
| 725 | tmp = readl (&ep->regs->ep_stat); |
| 726 | if ((tmp & (1 << NAK_OUT_PACKETS)) != 0) |
| 727 | writel ((1 << CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp); |
| 728 | } |
| 729 | |
| 730 | #endif /* __KERNEL__ */ |