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 */ 432struct 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 450struct 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 is_selfpowered:1, 462 wakeup:1, 463 dma_eot_polarity:1, 464 dma_dack_polarity:1, 465 dma_dreq_polarity:1, 466 dma_busy:1; 467 u16 chiprev; 468 u8 pagesel; 469 470 unsigned int irq; 471 unsigned short fifo_mode; 472 473 unsigned int base_shift; 474 u16 __iomem *base_addr; 475 union { 476#ifdef CONFIG_PCI 477 struct { 478 void __iomem *plx9054_base_addr; 479 void __iomem *epld_base_addr; 480 } rdk1; 481 struct { 482 /* Bar0, Bar1 is base_addr both mem-mapped */ 483 void __iomem *fpga_base_addr; 484 } rdk2; 485#endif 486 }; 487}; 488 489static void __iomem * 490net2272_reg_addr(struct net2272 *dev, unsigned int reg) 491{ 492 return dev->base_addr + (reg << dev->base_shift); 493} 494 495static void 496net2272_write(struct net2272 *dev, unsigned int reg, u8 value) 497{ 498 if (reg >= REG_INDEXED_THRESHOLD) { 499 /* 500 * Indexed register; use REGADDRPTR/REGDATA 501 * - Save and restore REGADDRPTR. This prevents REGADDRPTR from 502 * changes between other code sections, but it is time consuming. 503 * - Performance tips: either do not save and restore REGADDRPTR (if it 504 * is safe) or do save/restore operations only in critical sections. 505 u8 tmp = readb(dev->base_addr + REGADDRPTR); 506 */ 507 writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); 508 writeb(value, net2272_reg_addr(dev, REGDATA)); 509 /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ 510 } else 511 writeb(value, net2272_reg_addr(dev, reg)); 512} 513 514static u8 515net2272_read(struct net2272 *dev, unsigned int reg) 516{ 517 u8 ret; 518 519 if (reg >= REG_INDEXED_THRESHOLD) { 520 /* 521 * Indexed register; use REGADDRPTR/REGDATA 522 * - Save and restore REGADDRPTR. This prevents REGADDRPTR from 523 * changes between other code sections, but it is time consuming. 524 * - Performance tips: either do not save and restore REGADDRPTR (if it 525 * is safe) or do save/restore operations only in critical sections. 526 u8 tmp = readb(dev->base_addr + REGADDRPTR); 527 */ 528 writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); 529 ret = readb(net2272_reg_addr(dev, REGDATA)); 530 /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ 531 } else 532 ret = readb(net2272_reg_addr(dev, reg)); 533 534 return ret; 535} 536 537static void 538net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value) 539{ 540 struct net2272 *dev = ep->dev; 541 542 if (dev->pagesel != ep->num) { 543 net2272_write(dev, PAGESEL, ep->num); 544 dev->pagesel = ep->num; 545 } 546 net2272_write(dev, reg, value); 547} 548 549static u8 550net2272_ep_read(struct net2272_ep *ep, unsigned int reg) 551{ 552 struct net2272 *dev = ep->dev; 553 554 if (dev->pagesel != ep->num) { 555 net2272_write(dev, PAGESEL, ep->num); 556 dev->pagesel = ep->num; 557 } 558 return net2272_read(dev, reg); 559} 560 561static void allow_status(struct net2272_ep *ep) 562{ 563 /* ep0 only */ 564 net2272_ep_write(ep, EP_RSPCLR, 565 (1 << CONTROL_STATUS_PHASE_HANDSHAKE) | 566 (1 << ALT_NAK_OUT_PACKETS) | 567 (1 << NAK_OUT_PACKETS_MODE)); 568 ep->stopped = 1; 569} 570 571static void set_halt(struct net2272_ep *ep) 572{ 573 /* ep0 and bulk/intr endpoints */ 574 net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE); 575 net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT); 576} 577 578static void clear_halt(struct net2272_ep *ep) 579{ 580 /* ep0 and bulk/intr endpoints */ 581 net2272_ep_write(ep, EP_RSPCLR, 582 (1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE)); 583} 584 585/* count (<= 4) bytes in the next fifo write will be valid */ 586static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count) 587{ 588 /* net2272_ep_write will truncate to u8 for us */ 589 net2272_ep_write(ep, EP_TRANSFER2, count >> 16); 590 net2272_ep_write(ep, EP_TRANSFER1, count >> 8); 591 net2272_ep_write(ep, EP_TRANSFER0, count); 592} 593 594struct net2272_request { 595 struct usb_request req; 596 struct list_head queue; 597 unsigned mapped:1, 598 valid:1; 599}; 600 601#endif 602