1 /* 2 * PLX NET2272 high/full speed USB device controller 3 * 4 * Copyright (C) 2005-2006 PLX Technology, Inc. 5 * Copyright (C) 2006-2011 Analog Devices, Inc. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #ifndef __NET2272_H__ 23 #define __NET2272_H__ 24 25 /* Main Registers */ 26 #define REGADDRPTR 0x00 27 #define REGDATA 0x01 28 #define IRQSTAT0 0x02 29 #define ENDPOINT_0_INTERRUPT 0 30 #define ENDPOINT_A_INTERRUPT 1 31 #define ENDPOINT_B_INTERRUPT 2 32 #define ENDPOINT_C_INTERRUPT 3 33 #define VIRTUALIZED_ENDPOINT_INTERRUPT 4 34 #define SETUP_PACKET_INTERRUPT 5 35 #define DMA_DONE_INTERRUPT 6 36 #define SOF_INTERRUPT 7 37 #define IRQSTAT1 0x03 38 #define CONTROL_STATUS_INTERRUPT 1 39 #define VBUS_INTERRUPT 2 40 #define SUSPEND_REQUEST_INTERRUPT 3 41 #define SUSPEND_REQUEST_CHANGE_INTERRUPT 4 42 #define RESUME_INTERRUPT 5 43 #define ROOT_PORT_RESET_INTERRUPT 6 44 #define RESET_STATUS 7 45 #define PAGESEL 0x04 46 #define DMAREQ 0x1c 47 #define DMA_ENDPOINT_SELECT 0 48 #define DREQ_POLARITY 1 49 #define DACK_POLARITY 2 50 #define EOT_POLARITY 3 51 #define DMA_CONTROL_DACK 4 52 #define DMA_REQUEST_ENABLE 5 53 #define DMA_REQUEST 6 54 #define DMA_BUFFER_VALID 7 55 #define SCRATCH 0x1d 56 #define IRQENB0 0x20 57 #define ENDPOINT_0_INTERRUPT_ENABLE 0 58 #define ENDPOINT_A_INTERRUPT_ENABLE 1 59 #define ENDPOINT_B_INTERRUPT_ENABLE 2 60 #define ENDPOINT_C_INTERRUPT_ENABLE 3 61 #define VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE 4 62 #define SETUP_PACKET_INTERRUPT_ENABLE 5 63 #define DMA_DONE_INTERRUPT_ENABLE 6 64 #define SOF_INTERRUPT_ENABLE 7 65 #define IRQENB1 0x21 66 #define VBUS_INTERRUPT_ENABLE 2 67 #define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 68 #define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4 69 #define RESUME_INTERRUPT_ENABLE 5 70 #define ROOT_PORT_RESET_INTERRUPT_ENABLE 6 71 #define LOCCTL 0x22 72 #define DATA_WIDTH 0 73 #define LOCAL_CLOCK_OUTPUT 1 74 #define LOCAL_CLOCK_OUTPUT_OFF 0 75 #define LOCAL_CLOCK_OUTPUT_3_75MHZ 1 76 #define LOCAL_CLOCK_OUTPUT_7_5MHZ 2 77 #define LOCAL_CLOCK_OUTPUT_15MHZ 3 78 #define LOCAL_CLOCK_OUTPUT_30MHZ 4 79 #define LOCAL_CLOCK_OUTPUT_60MHZ 5 80 #define DMA_SPLIT_BUS_MODE 4 81 #define BYTE_SWAP 5 82 #define BUFFER_CONFIGURATION 6 83 #define BUFFER_CONFIGURATION_EPA512_EPB512 0 84 #define BUFFER_CONFIGURATION_EPA1024_EPB512 1 85 #define BUFFER_CONFIGURATION_EPA1024_EPB1024 2 86 #define BUFFER_CONFIGURATION_EPA1024DB 3 87 #define CHIPREV_LEGACY 0x23 88 #define NET2270_LEGACY_REV 0x40 89 #define LOCCTL1 0x24 90 #define DMA_MODE 0 91 #define SLOW_DREQ 0 92 #define FAST_DREQ 1 93 #define BURST_MODE 2 94 #define DMA_DACK_ENABLE 2 95 #define CHIPREV_2272 0x25 96 #define CHIPREV_NET2272_R1 0x10 97 #define CHIPREV_NET2272_R1A 0x11 98 /* USB Registers */ 99 #define USBCTL0 0x18 100 #define IO_WAKEUP_ENABLE 1 101 #define USB_DETECT_ENABLE 3 102 #define USB_ROOT_PORT_WAKEUP_ENABLE 5 103 #define USBCTL1 0x19 104 #define VBUS_PIN 0 105 #define USB_FULL_SPEED 1 106 #define USB_HIGH_SPEED 2 107 #define GENERATE_RESUME 3 108 #define VIRTUAL_ENDPOINT_ENABLE 4 109 #define FRAME0 0x1a 110 #define FRAME1 0x1b 111 #define OURADDR 0x30 112 #define FORCE_IMMEDIATE 7 113 #define USBDIAG 0x31 114 #define FORCE_TRANSMIT_CRC_ERROR 0 115 #define PREVENT_TRANSMIT_BIT_STUFF 1 116 #define FORCE_RECEIVE_ERROR 2 117 #define FAST_TIMES 4 118 #define USBTEST 0x32 119 #define TEST_MODE_SELECT 0 120 #define NORMAL_OPERATION 0 121 #define TEST_J 1 122 #define TEST_K 2 123 #define TEST_SE0_NAK 3 124 #define TEST_PACKET 4 125 #define TEST_FORCE_ENABLE 5 126 #define XCVRDIAG 0x33 127 #define FORCE_FULL_SPEED 2 128 #define FORCE_HIGH_SPEED 3 129 #define OPMODE 4 130 #define NORMAL_OPERATION 0 131 #define NON_DRIVING 1 132 #define DISABLE_BITSTUFF_AND_NRZI_ENCODE 2 133 #define LINESTATE 6 134 #define SE0_STATE 0 135 #define J_STATE 1 136 #define K_STATE 2 137 #define SE1_STATE 3 138 #define VIRTOUT0 0x34 139 #define VIRTOUT1 0x35 140 #define VIRTIN0 0x36 141 #define VIRTIN1 0x37 142 #define SETUP0 0x40 143 #define SETUP1 0x41 144 #define SETUP2 0x42 145 #define SETUP3 0x43 146 #define SETUP4 0x44 147 #define SETUP5 0x45 148 #define SETUP6 0x46 149 #define SETUP7 0x47 150 /* Endpoint Registers (Paged via PAGESEL) */ 151 #define EP_DATA 0x05 152 #define EP_STAT0 0x06 153 #define DATA_IN_TOKEN_INTERRUPT 0 154 #define DATA_OUT_TOKEN_INTERRUPT 1 155 #define DATA_PACKET_TRANSMITTED_INTERRUPT 2 156 #define DATA_PACKET_RECEIVED_INTERRUPT 3 157 #define SHORT_PACKET_TRANSFERRED_INTERRUPT 4 158 #define NAK_OUT_PACKETS 5 159 #define BUFFER_EMPTY 6 160 #define BUFFER_FULL 7 161 #define EP_STAT1 0x07 162 #define TIMEOUT 0 163 #define USB_OUT_ACK_SENT 1 164 #define USB_OUT_NAK_SENT 2 165 #define USB_IN_ACK_RCVD 3 166 #define USB_IN_NAK_SENT 4 167 #define USB_STALL_SENT 5 168 #define LOCAL_OUT_ZLP 6 169 #define BUFFER_FLUSH 7 170 #define EP_TRANSFER0 0x08 171 #define EP_TRANSFER1 0x09 172 #define EP_TRANSFER2 0x0a 173 #define EP_IRQENB 0x0b 174 #define DATA_IN_TOKEN_INTERRUPT_ENABLE 0 175 #define DATA_OUT_TOKEN_INTERRUPT_ENABLE 1 176 #define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2 177 #define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3 178 #define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 4 179 #define EP_AVAIL0 0x0c 180 #define EP_AVAIL1 0x0d 181 #define EP_RSPCLR 0x0e 182 #define EP_RSPSET 0x0f 183 #define ENDPOINT_HALT 0 184 #define ENDPOINT_TOGGLE 1 185 #define NAK_OUT_PACKETS_MODE 2 186 #define CONTROL_STATUS_PHASE_HANDSHAKE 3 187 #define INTERRUPT_MODE 4 188 #define AUTOVALIDATE 5 189 #define HIDE_STATUS_PHASE 6 190 #define ALT_NAK_OUT_PACKETS 7 191 #define EP_MAXPKT0 0x28 192 #define EP_MAXPKT1 0x29 193 #define ADDITIONAL_TRANSACTION_OPPORTUNITIES 3 194 #define NONE_ADDITIONAL_TRANSACTION 0 195 #define ONE_ADDITIONAL_TRANSACTION 1 196 #define TWO_ADDITIONAL_TRANSACTION 2 197 #define EP_CFG 0x2a 198 #define ENDPOINT_NUMBER 0 199 #define ENDPOINT_DIRECTION 4 200 #define ENDPOINT_TYPE 5 201 #define ENDPOINT_ENABLE 7 202 #define EP_HBW 0x2b 203 #define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 0 204 #define DATA0_PID 0 205 #define DATA1_PID 1 206 #define DATA2_PID 2 207 #define MDATA_PID 3 208 #define EP_BUFF_STATES 0x2c 209 #define BUFFER_A_STATE 0 210 #define BUFFER_B_STATE 2 211 #define BUFF_FREE 0 212 #define BUFF_VALID 1 213 #define BUFF_LCL 2 214 #define BUFF_USB 3 215 216 /*---------------------------------------------------------------------------*/ 217 218 #define PCI_DEVICE_ID_RDK1 0x9054 219 220 /* PCI-RDK EPLD Registers */ 221 #define RDK_EPLD_IO_REGISTER1 0x00000000 222 #define RDK_EPLD_USB_RESET 0 223 #define RDK_EPLD_USB_POWERDOWN 1 224 #define RDK_EPLD_USB_WAKEUP 2 225 #define RDK_EPLD_USB_EOT 3 226 #define RDK_EPLD_DPPULL 4 227 #define RDK_EPLD_IO_REGISTER2 0x00000004 228 #define RDK_EPLD_BUSWIDTH 0 229 #define RDK_EPLD_USER 2 230 #define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 231 #define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 232 #define RDK_EPLD_STATUS_REGISTER 0x00000008 233 #define RDK_EPLD_USB_LRESET 0 234 #define RDK_EPLD_REVISION_REGISTER 0x0000000c 235 236 /* PCI-RDK PLX 9054 Registers */ 237 #define INTCSR 0x68 238 #define PCI_INTERRUPT_ENABLE 8 239 #define LOCAL_INTERRUPT_INPUT_ENABLE 11 240 #define LOCAL_INPUT_INTERRUPT_ACTIVE 15 241 #define LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE 18 242 #define LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE 19 243 #define DMA_CHANNEL_0_INTERRUPT_ACTIVE 21 244 #define DMA_CHANNEL_1_INTERRUPT_ACTIVE 22 245 #define CNTRL 0x6C 246 #define RELOAD_CONFIGURATION_REGISTERS 29 247 #define PCI_ADAPTER_SOFTWARE_RESET 30 248 #define DMAMODE0 0x80 249 #define LOCAL_BUS_WIDTH 0 250 #define INTERNAL_WAIT_STATES 2 251 #define TA_READY_INPUT_ENABLE 6 252 #define LOCAL_BURST_ENABLE 8 253 #define SCATTER_GATHER_MODE 9 254 #define DONE_INTERRUPT_ENABLE 10 255 #define LOCAL_ADDRESSING_MODE 11 256 #define DEMAND_MODE 12 257 #define DMA_EOT_ENABLE 14 258 #define FAST_SLOW_TERMINATE_MODE_SELECT 15 259 #define DMA_CHANNEL_INTERRUPT_SELECT 17 260 #define DMAPADR0 0x84 261 #define DMALADR0 0x88 262 #define DMASIZ0 0x8c 263 #define DMADPR0 0x90 264 #define DESCRIPTOR_LOCATION 0 265 #define END_OF_CHAIN 1 266 #define INTERRUPT_AFTER_TERMINAL_COUNT 2 267 #define DIRECTION_OF_TRANSFER 3 268 #define DMACSR0 0xa8 269 #define CHANNEL_ENABLE 0 270 #define CHANNEL_START 1 271 #define CHANNEL_ABORT 2 272 #define CHANNEL_CLEAR_INTERRUPT 3 273 #define CHANNEL_DONE 4 274 #define DMATHR 0xb0 275 #define LBRD1 0xf8 276 #define MEMORY_SPACE_LOCAL_BUS_WIDTH 0 277 #define W8_BIT 0 278 #define W16_BIT 1 279 280 /* Special OR'ing of INTCSR bits */ 281 #define LOCAL_INTERRUPT_TEST \ 282 ((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \ 283 (1 << LOCAL_INTERRUPT_INPUT_ENABLE)) 284 285 #define DMA_CHANNEL_0_TEST \ 286 ((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \ 287 (1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE)) 288 289 #define DMA_CHANNEL_1_TEST \ 290 ((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \ 291 (1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE)) 292 293 /* EPLD Registers */ 294 #define RDK_EPLD_IO_REGISTER1 0x00000000 295 #define RDK_EPLD_USB_RESET 0 296 #define RDK_EPLD_USB_POWERDOWN 1 297 #define RDK_EPLD_USB_WAKEUP 2 298 #define RDK_EPLD_USB_EOT 3 299 #define RDK_EPLD_DPPULL 4 300 #define RDK_EPLD_IO_REGISTER2 0x00000004 301 #define RDK_EPLD_BUSWIDTH 0 302 #define RDK_EPLD_USER 2 303 #define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 304 #define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 305 #define RDK_EPLD_STATUS_REGISTER 0x00000008 306 #define RDK_EPLD_USB_LRESET 0 307 #define RDK_EPLD_REVISION_REGISTER 0x0000000c 308 309 #define EPLD_IO_CONTROL_REGISTER 0x400 310 #define NET2272_RESET 0 311 #define BUSWIDTH 1 312 #define MPX_MODE 3 313 #define USER 4 314 #define DMA_TIMEOUT_ENABLE 5 315 #define DMA_CTL_DACK 6 316 #define EPLD_DMA_ENABLE 7 317 #define EPLD_DMA_CONTROL_REGISTER 0x800 318 #define SPLIT_DMA_MODE 0 319 #define SPLIT_DMA_DIRECTION 1 320 #define SPLIT_DMA_ENABLE 2 321 #define SPLIT_DMA_INTERRUPT_ENABLE 3 322 #define SPLIT_DMA_INTERRUPT 4 323 #define EPLD_DMA_MODE 5 324 #define EPLD_DMA_CONTROLLER_ENABLE 7 325 #define SPLIT_DMA_ADDRESS_LOW 0xc00 326 #define SPLIT_DMA_ADDRESS_HIGH 0x1000 327 #define SPLIT_DMA_BYTE_COUNT_LOW 0x1400 328 #define SPLIT_DMA_BYTE_COUNT_HIGH 0x1800 329 #define EPLD_REVISION_REGISTER 0x1c00 330 #define SPLIT_DMA_RAM 0x4000 331 #define DMA_RAM_SIZE 0x1000 332 333 /*---------------------------------------------------------------------------*/ 334 335 #define PCI_DEVICE_ID_RDK2 0x3272 336 337 /* PCI-RDK version 2 registers */ 338 339 /* Main Control Registers */ 340 341 #define RDK2_IRQENB 0x00 342 #define RDK2_IRQSTAT 0x04 343 #define PB7 23 344 #define PB6 22 345 #define PB5 21 346 #define PB4 20 347 #define PB3 19 348 #define PB2 18 349 #define PB1 17 350 #define PB0 16 351 #define GP3 23 352 #define GP2 23 353 #define GP1 23 354 #define GP0 23 355 #define DMA_RETRY_ABORT 6 356 #define DMA_PAUSE_DONE 5 357 #define DMA_ABORT_DONE 4 358 #define DMA_OUT_FIFO_TRANSFER_DONE 3 359 #define DMA_LOCAL_DONE 2 360 #define DMA_PCI_DONE 1 361 #define NET2272_PCI_IRQ 0 362 363 #define RDK2_LOCCTLRDK 0x08 364 #define CHIP_RESET 3 365 #define SPLIT_DMA 2 366 #define MULTIPLEX_MODE 1 367 #define BUS_WIDTH 0 368 369 #define RDK2_GPIOCTL 0x10 370 #define GP3_OUT_ENABLE 7 371 #define GP2_OUT_ENABLE 6 372 #define GP1_OUT_ENABLE 5 373 #define GP0_OUT_ENABLE 4 374 #define GP3_DATA 3 375 #define GP2_DATA 2 376 #define GP1_DATA 1 377 #define GP0_DATA 0 378 379 #define RDK2_LEDSW 0x14 380 #define LED3 27 381 #define LED2 26 382 #define LED1 25 383 #define LED0 24 384 #define PBUTTON 16 385 #define DIPSW 0 386 387 #define RDK2_DIAG 0x18 388 #define RDK2_FAST_TIMES 2 389 #define FORCE_PCI_SERR 1 390 #define FORCE_PCI_INT 0 391 #define RDK2_FPGAREV 0x1C 392 393 /* Dma Control registers */ 394 #define RDK2_DMACTL 0x80 395 #define ADDR_HOLD 24 396 #define RETRY_COUNT 16 /* 23:16 */ 397 #define FIFO_THRESHOLD 11 /* 15:11 */ 398 #define MEM_WRITE_INVALIDATE 10 399 #define READ_MULTIPLE 9 400 #define READ_LINE 8 401 #define RDK2_DMA_MODE 6 /* 7:6 */ 402 #define CONTROL_DACK 5 403 #define EOT_ENABLE 4 404 #define EOT_POLARITY 3 405 #define DACK_POLARITY 2 406 #define DREQ_POLARITY 1 407 #define DMA_ENABLE 0 408 409 #define RDK2_DMASTAT 0x84 410 #define GATHER_COUNT 12 /* 14:12 */ 411 #define FIFO_COUNT 6 /* 11:6 */ 412 #define FIFO_FLUSH 5 413 #define FIFO_TRANSFER 4 414 #define PAUSE_DONE 3 415 #define ABORT_DONE 2 416 #define DMA_ABORT 1 417 #define DMA_START 0 418 419 #define RDK2_DMAPCICOUNT 0x88 420 #define DMA_DIRECTION 31 421 #define DMA_PCI_BYTE_COUNT 0 /* 0:23 */ 422 423 #define RDK2_DMALOCCOUNT 0x8C /* 0:23 dma local byte count */ 424 425 #define RDK2_DMAADDR 0x90 /* 2:31 PCI bus starting address */ 426 427 /*---------------------------------------------------------------------------*/ 428 429 #define REG_INDEXED_THRESHOLD (1 << 5) 430 431 /* DRIVER DATA STRUCTURES and UTILITIES */ 432 struct net2272_ep { 433 struct usb_ep ep; 434 struct net2272 *dev; 435 unsigned long irqs; 436 437 /* analogous to a host-side qh */ 438 struct list_head queue; 439 const struct usb_endpoint_descriptor *desc; 440 unsigned num:8, 441 fifo_size:12, 442 stopped:1, 443 wedged:1, 444 is_in:1, 445 is_iso:1, 446 dma:1, 447 not_empty:1; 448 }; 449 450 struct net2272 { 451 /* each device provides one gadget, several endpoints */ 452 struct usb_gadget gadget; 453 struct device *dev; 454 unsigned short dev_id; 455 456 spinlock_t lock; 457 struct net2272_ep ep[4]; 458 struct usb_gadget_driver *driver; 459 unsigned protocol_stall:1, 460 softconnect:1, 461 wakeup:1, 462 dma_eot_polarity:1, 463 dma_dack_polarity:1, 464 dma_dreq_polarity:1, 465 dma_busy:1; 466 u16 chiprev; 467 u8 pagesel; 468 469 unsigned int irq; 470 unsigned short fifo_mode; 471 472 unsigned int base_shift; 473 u16 __iomem *base_addr; 474 union { 475 #ifdef CONFIG_USB_PCI 476 struct { 477 void __iomem *plx9054_base_addr; 478 void __iomem *epld_base_addr; 479 } rdk1; 480 struct { 481 /* Bar0, Bar1 is base_addr both mem-mapped */ 482 void __iomem *fpga_base_addr; 483 } rdk2; 484 #endif 485 }; 486 }; 487 488 static void __iomem * 489 net2272_reg_addr(struct net2272 *dev, unsigned int reg) 490 { 491 return dev->base_addr + (reg << dev->base_shift); 492 } 493 494 static void 495 net2272_write(struct net2272 *dev, unsigned int reg, u8 value) 496 { 497 if (reg >= REG_INDEXED_THRESHOLD) { 498 /* 499 * Indexed register; use REGADDRPTR/REGDATA 500 * - Save and restore REGADDRPTR. This prevents REGADDRPTR from 501 * changes between other code sections, but it is time consuming. 502 * - Performance tips: either do not save and restore REGADDRPTR (if it 503 * is safe) or do save/restore operations only in critical sections. 504 u8 tmp = readb(dev->base_addr + REGADDRPTR); 505 */ 506 writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); 507 writeb(value, net2272_reg_addr(dev, REGDATA)); 508 /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ 509 } else 510 writeb(value, net2272_reg_addr(dev, reg)); 511 } 512 513 static u8 514 net2272_read(struct net2272 *dev, unsigned int reg) 515 { 516 u8 ret; 517 518 if (reg >= REG_INDEXED_THRESHOLD) { 519 /* 520 * Indexed register; use REGADDRPTR/REGDATA 521 * - Save and restore REGADDRPTR. This prevents REGADDRPTR from 522 * changes between other code sections, but it is time consuming. 523 * - Performance tips: either do not save and restore REGADDRPTR (if it 524 * is safe) or do save/restore operations only in critical sections. 525 u8 tmp = readb(dev->base_addr + REGADDRPTR); 526 */ 527 writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); 528 ret = readb(net2272_reg_addr(dev, REGDATA)); 529 /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ 530 } else 531 ret = readb(net2272_reg_addr(dev, reg)); 532 533 return ret; 534 } 535 536 static void 537 net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value) 538 { 539 struct net2272 *dev = ep->dev; 540 541 if (dev->pagesel != ep->num) { 542 net2272_write(dev, PAGESEL, ep->num); 543 dev->pagesel = ep->num; 544 } 545 net2272_write(dev, reg, value); 546 } 547 548 static u8 549 net2272_ep_read(struct net2272_ep *ep, unsigned int reg) 550 { 551 struct net2272 *dev = ep->dev; 552 553 if (dev->pagesel != ep->num) { 554 net2272_write(dev, PAGESEL, ep->num); 555 dev->pagesel = ep->num; 556 } 557 return net2272_read(dev, reg); 558 } 559 560 static void allow_status(struct net2272_ep *ep) 561 { 562 /* ep0 only */ 563 net2272_ep_write(ep, EP_RSPCLR, 564 (1 << CONTROL_STATUS_PHASE_HANDSHAKE) | 565 (1 << ALT_NAK_OUT_PACKETS) | 566 (1 << NAK_OUT_PACKETS_MODE)); 567 ep->stopped = 1; 568 } 569 570 static void set_halt(struct net2272_ep *ep) 571 { 572 /* ep0 and bulk/intr endpoints */ 573 net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE); 574 net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT); 575 } 576 577 static void clear_halt(struct net2272_ep *ep) 578 { 579 /* ep0 and bulk/intr endpoints */ 580 net2272_ep_write(ep, EP_RSPCLR, 581 (1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE)); 582 } 583 584 /* count (<= 4) bytes in the next fifo write will be valid */ 585 static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count) 586 { 587 /* net2272_ep_write will truncate to u8 for us */ 588 net2272_ep_write(ep, EP_TRANSFER2, count >> 16); 589 net2272_ep_write(ep, EP_TRANSFER1, count >> 8); 590 net2272_ep_write(ep, EP_TRANSFER0, count); 591 } 592 593 struct net2272_request { 594 struct usb_request req; 595 struct list_head queue; 596 unsigned mapped:1, 597 valid:1; 598 }; 599 600 #endif 601