1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * CAN driver for PEAK System PCAN-USB FD / PCAN-USB Pro FD adapter 4 * 5 * Copyright (C) 2013-2014 Stephane Grosjean <s.grosjean@peak-system.com> 6 */ 7 #include <linux/netdevice.h> 8 #include <linux/usb.h> 9 #include <linux/module.h> 10 11 #include <linux/can.h> 12 #include <linux/can/dev.h> 13 #include <linux/can/error.h> 14 #include <linux/can/dev/peak_canfd.h> 15 16 #include "pcan_usb_core.h" 17 #include "pcan_usb_pro.h" 18 19 MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB FD adapter"); 20 MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB Pro FD adapter"); 21 22 #define PCAN_USBPROFD_CHANNEL_COUNT 2 23 #define PCAN_USBFD_CHANNEL_COUNT 1 24 25 /* PCAN-USB Pro FD adapter internal clock (Hz) */ 26 #define PCAN_UFD_CRYSTAL_HZ 80000000 27 28 #define PCAN_UFD_CMD_BUFFER_SIZE 512 29 #define PCAN_UFD_LOSPD_PKT_SIZE 64 30 31 /* PCAN-USB Pro FD command timeout (ms.) */ 32 #define PCAN_UFD_CMD_TIMEOUT_MS 1000 33 34 /* PCAN-USB Pro FD rx/tx buffers size */ 35 #define PCAN_UFD_RX_BUFFER_SIZE 2048 36 #define PCAN_UFD_TX_BUFFER_SIZE 512 37 38 /* read some versions info from the hw device */ 39 struct __packed pcan_ufd_fw_info { 40 __le16 size_of; /* sizeof this */ 41 __le16 type; /* type of this structure */ 42 u8 hw_type; /* Type of hardware (HW_TYPE_xxx) */ 43 u8 bl_version[3]; /* Bootloader version */ 44 u8 hw_version; /* Hardware version (PCB) */ 45 u8 fw_version[3]; /* Firmware version */ 46 __le32 dev_id[2]; /* "device id" per CAN */ 47 __le32 ser_no; /* S/N */ 48 __le32 flags; /* special functions */ 49 }; 50 51 /* handle device specific info used by the netdevices */ 52 struct pcan_usb_fd_if { 53 struct peak_usb_device *dev[PCAN_USB_MAX_CHANNEL]; 54 struct pcan_ufd_fw_info fw_info; 55 struct peak_time_ref time_ref; 56 int cm_ignore_count; 57 int dev_opened_count; 58 }; 59 60 /* device information */ 61 struct pcan_usb_fd_device { 62 struct peak_usb_device dev; 63 struct can_berr_counter bec; 64 struct pcan_usb_fd_if *usb_if; 65 u8 *cmd_buffer_addr; 66 }; 67 68 /* Extended USB commands (non uCAN commands) */ 69 70 /* Clock Modes command */ 71 #define PCAN_UFD_CMD_CLK_SET 0x80 72 73 #define PCAN_UFD_CLK_80MHZ 0x0 74 #define PCAN_UFD_CLK_60MHZ 0x1 75 #define PCAN_UFD_CLK_40MHZ 0x2 76 #define PCAN_UFD_CLK_30MHZ 0x3 77 #define PCAN_UFD_CLK_24MHZ 0x4 78 #define PCAN_UFD_CLK_20MHZ 0x5 79 #define PCAN_UFD_CLK_DEF PCAN_UFD_CLK_80MHZ 80 81 struct __packed pcan_ufd_clock { 82 __le16 opcode_channel; 83 84 u8 mode; 85 u8 unused[5]; 86 }; 87 88 /* LED control command */ 89 #define PCAN_UFD_CMD_LED_SET 0x86 90 91 #define PCAN_UFD_LED_DEV 0x00 92 #define PCAN_UFD_LED_FAST 0x01 93 #define PCAN_UFD_LED_SLOW 0x02 94 #define PCAN_UFD_LED_ON 0x03 95 #define PCAN_UFD_LED_OFF 0x04 96 #define PCAN_UFD_LED_DEF PCAN_UFD_LED_DEV 97 98 struct __packed pcan_ufd_led { 99 __le16 opcode_channel; 100 101 u8 mode; 102 u8 unused[5]; 103 }; 104 105 /* Extended usage of uCAN commands CMD_xxx_xx_OPTION for PCAN-USB Pro FD */ 106 #define PCAN_UFD_FLTEXT_CALIBRATION 0x8000 107 108 struct __packed pcan_ufd_options { 109 __le16 opcode_channel; 110 111 __le16 ucan_mask; 112 u16 unused; 113 __le16 usb_mask; 114 }; 115 116 /* Extended usage of uCAN messages for PCAN-USB Pro FD */ 117 #define PCAN_UFD_MSG_CALIBRATION 0x100 118 119 struct __packed pcan_ufd_ts_msg { 120 __le16 size; 121 __le16 type; 122 __le32 ts_low; 123 __le32 ts_high; 124 __le16 usb_frame_index; 125 u16 unused; 126 }; 127 128 #define PCAN_UFD_MSG_OVERRUN 0x101 129 130 #define PCAN_UFD_OVMSG_CHANNEL(o) ((o)->channel & 0xf) 131 132 struct __packed pcan_ufd_ovr_msg { 133 __le16 size; 134 __le16 type; 135 __le32 ts_low; 136 __le32 ts_high; 137 u8 channel; 138 u8 unused[3]; 139 }; 140 141 static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om) 142 { 143 return om->channel & 0xf; 144 } 145 146 /* Clock mode frequency values */ 147 static const u32 pcan_usb_fd_clk_freq[6] = { 148 [PCAN_UFD_CLK_80MHZ] = 80000000, 149 [PCAN_UFD_CLK_60MHZ] = 60000000, 150 [PCAN_UFD_CLK_40MHZ] = 40000000, 151 [PCAN_UFD_CLK_30MHZ] = 30000000, 152 [PCAN_UFD_CLK_24MHZ] = 24000000, 153 [PCAN_UFD_CLK_20MHZ] = 20000000 154 }; 155 156 /* return a device USB interface */ 157 static inline 158 struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev) 159 { 160 struct pcan_usb_fd_device *pdev = 161 container_of(dev, struct pcan_usb_fd_device, dev); 162 return pdev->usb_if; 163 } 164 165 /* return a device USB commands buffer */ 166 static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev) 167 { 168 struct pcan_usb_fd_device *pdev = 169 container_of(dev, struct pcan_usb_fd_device, dev); 170 return pdev->cmd_buffer_addr; 171 } 172 173 /* send PCAN-USB Pro FD commands synchronously */ 174 static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) 175 { 176 void *cmd_head = pcan_usb_fd_cmd_buffer(dev); 177 int err = 0; 178 u8 *packet_ptr; 179 int packet_len; 180 ptrdiff_t cmd_len; 181 182 /* usb device unregistered? */ 183 if (!(dev->state & PCAN_USB_STATE_CONNECTED)) 184 return 0; 185 186 /* if a packet is not filled completely by commands, the command list 187 * is terminated with an "end of collection" record. 188 */ 189 cmd_len = cmd_tail - cmd_head; 190 if (cmd_len <= (PCAN_UFD_CMD_BUFFER_SIZE - sizeof(u64))) { 191 memset(cmd_tail, 0xff, sizeof(u64)); 192 cmd_len += sizeof(u64); 193 } 194 195 packet_ptr = cmd_head; 196 packet_len = cmd_len; 197 198 /* firmware is not able to re-assemble 512 bytes buffer in full-speed */ 199 if (unlikely(dev->udev->speed != USB_SPEED_HIGH)) 200 packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE); 201 202 do { 203 err = usb_bulk_msg(dev->udev, 204 usb_sndbulkpipe(dev->udev, 205 PCAN_USBPRO_EP_CMDOUT), 206 packet_ptr, packet_len, 207 NULL, PCAN_UFD_CMD_TIMEOUT_MS); 208 if (err) { 209 netdev_err(dev->netdev, 210 "sending command failure: %d\n", err); 211 break; 212 } 213 214 packet_ptr += packet_len; 215 cmd_len -= packet_len; 216 217 if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE) 218 packet_len = cmd_len; 219 220 } while (packet_len > 0); 221 222 return err; 223 } 224 225 /* build the commands list in the given buffer, to enter operational mode */ 226 static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf) 227 { 228 struct pucan_wr_err_cnt *prc; 229 struct pucan_command *cmd; 230 u8 *pc = buf; 231 232 /* 1st, reset error counters: */ 233 prc = (struct pucan_wr_err_cnt *)pc; 234 prc->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 235 PUCAN_CMD_WR_ERR_CNT); 236 237 /* select both counters */ 238 prc->sel_mask = cpu_to_le16(PUCAN_WRERRCNT_TE|PUCAN_WRERRCNT_RE); 239 240 /* and reset their values */ 241 prc->tx_counter = 0; 242 prc->rx_counter = 0; 243 244 /* moves the pointer forward */ 245 pc += sizeof(struct pucan_wr_err_cnt); 246 247 /* add command to switch from ISO to non-ISO mode, if fw allows it */ 248 if (dev->can.ctrlmode_supported & CAN_CTRLMODE_FD_NON_ISO) { 249 struct pucan_options *puo = (struct pucan_options *)pc; 250 251 puo->opcode_channel = 252 (dev->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO) ? 253 pucan_cmd_opcode_channel(dev->ctrl_idx, 254 PUCAN_CMD_CLR_DIS_OPTION) : 255 pucan_cmd_opcode_channel(dev->ctrl_idx, 256 PUCAN_CMD_SET_EN_OPTION); 257 258 puo->options = cpu_to_le16(PUCAN_OPTION_CANDFDISO); 259 260 /* to be sure that no other extended bits will be taken into 261 * account 262 */ 263 puo->unused = 0; 264 265 /* moves the pointer forward */ 266 pc += sizeof(struct pucan_options); 267 } 268 269 /* next, go back to operational mode */ 270 cmd = (struct pucan_command *)pc; 271 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 272 (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) ? 273 PUCAN_CMD_LISTEN_ONLY_MODE : 274 PUCAN_CMD_NORMAL_MODE); 275 pc += sizeof(struct pucan_command); 276 277 return pc - buf; 278 } 279 280 /* set CAN bus on/off */ 281 static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff) 282 { 283 u8 *pc = pcan_usb_fd_cmd_buffer(dev); 284 int l; 285 286 if (onoff) { 287 /* build the cmds list to enter operational mode */ 288 l = pcan_usb_fd_build_restart_cmd(dev, pc); 289 } else { 290 struct pucan_command *cmd = (struct pucan_command *)pc; 291 292 /* build cmd to go back to reset mode */ 293 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 294 PUCAN_CMD_RESET_MODE); 295 l = sizeof(struct pucan_command); 296 } 297 298 /* send the command */ 299 return pcan_usb_fd_send_cmd(dev, pc + l); 300 } 301 302 /* set filtering masks: 303 * 304 * idx in range [0..63] selects a row #idx, all rows otherwise 305 * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s) 306 * 307 * Each bit of this 64 x 32 bits array defines a CANID value: 308 * 309 * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while 310 * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded. 311 */ 312 static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx, 313 u32 mask) 314 { 315 struct pucan_filter_std *cmd = pcan_usb_fd_cmd_buffer(dev); 316 int i, n; 317 318 /* select all rows when idx is out of range [0..63] */ 319 if ((idx < 0) || (idx >= (1 << PUCAN_FLTSTD_ROW_IDX_BITS))) { 320 n = 1 << PUCAN_FLTSTD_ROW_IDX_BITS; 321 idx = 0; 322 323 /* select the row (and only the row) otherwise */ 324 } else { 325 n = idx + 1; 326 } 327 328 for (i = idx; i < n; i++, cmd++) { 329 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 330 PUCAN_CMD_FILTER_STD); 331 cmd->idx = cpu_to_le16(i); 332 cmd->mask = cpu_to_le32(mask); 333 } 334 335 /* send the command */ 336 return pcan_usb_fd_send_cmd(dev, cmd); 337 } 338 339 /* set/unset options 340 * 341 * onoff set(1)/unset(0) options 342 * mask each bit defines a kind of options to set/unset 343 */ 344 static int pcan_usb_fd_set_options(struct peak_usb_device *dev, 345 bool onoff, u16 ucan_mask, u16 usb_mask) 346 { 347 struct pcan_ufd_options *cmd = pcan_usb_fd_cmd_buffer(dev); 348 349 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 350 (onoff) ? PUCAN_CMD_SET_EN_OPTION : 351 PUCAN_CMD_CLR_DIS_OPTION); 352 353 cmd->ucan_mask = cpu_to_le16(ucan_mask); 354 cmd->usb_mask = cpu_to_le16(usb_mask); 355 356 /* send the command */ 357 return pcan_usb_fd_send_cmd(dev, ++cmd); 358 } 359 360 /* setup LED control */ 361 static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode) 362 { 363 struct pcan_ufd_led *cmd = pcan_usb_fd_cmd_buffer(dev); 364 365 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 366 PCAN_UFD_CMD_LED_SET); 367 cmd->mode = led_mode; 368 369 /* send the command */ 370 return pcan_usb_fd_send_cmd(dev, ++cmd); 371 } 372 373 /* set CAN clock domain */ 374 static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev, 375 u8 clk_mode) 376 { 377 struct pcan_ufd_clock *cmd = pcan_usb_fd_cmd_buffer(dev); 378 379 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 380 PCAN_UFD_CMD_CLK_SET); 381 cmd->mode = clk_mode; 382 383 /* send the command */ 384 return pcan_usb_fd_send_cmd(dev, ++cmd); 385 } 386 387 /* set bittiming for CAN and CAN-FD header */ 388 static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev, 389 struct can_bittiming *bt) 390 { 391 struct pucan_timing_slow *cmd = pcan_usb_fd_cmd_buffer(dev); 392 393 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 394 PUCAN_CMD_TIMING_SLOW); 395 cmd->sjw_t = PUCAN_TSLOW_SJW_T(bt->sjw - 1, 396 dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES); 397 398 cmd->tseg2 = PUCAN_TSLOW_TSEG2(bt->phase_seg2 - 1); 399 cmd->tseg1 = PUCAN_TSLOW_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); 400 cmd->brp = cpu_to_le16(PUCAN_TSLOW_BRP(bt->brp - 1)); 401 402 cmd->ewl = 96; /* default */ 403 404 /* send the command */ 405 return pcan_usb_fd_send_cmd(dev, ++cmd); 406 } 407 408 /* set CAN-FD bittiming for data */ 409 static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev, 410 struct can_bittiming *bt) 411 { 412 struct pucan_timing_fast *cmd = pcan_usb_fd_cmd_buffer(dev); 413 414 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 415 PUCAN_CMD_TIMING_FAST); 416 cmd->sjw = PUCAN_TFAST_SJW(bt->sjw - 1); 417 cmd->tseg2 = PUCAN_TFAST_TSEG2(bt->phase_seg2 - 1); 418 cmd->tseg1 = PUCAN_TFAST_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); 419 cmd->brp = cpu_to_le16(PUCAN_TFAST_BRP(bt->brp - 1)); 420 421 /* send the command */ 422 return pcan_usb_fd_send_cmd(dev, ++cmd); 423 } 424 425 /* handle restart but in asynchronously way 426 * (uses PCAN-USB Pro code to complete asynchronous request) 427 */ 428 static int pcan_usb_fd_restart_async(struct peak_usb_device *dev, 429 struct urb *urb, u8 *buf) 430 { 431 u8 *pc = buf; 432 433 /* build the entire cmds list in the provided buffer, to go back into 434 * operational mode. 435 */ 436 pc += pcan_usb_fd_build_restart_cmd(dev, pc); 437 438 /* add EOC */ 439 memset(pc, 0xff, sizeof(struct pucan_command)); 440 pc += sizeof(struct pucan_command); 441 442 /* complete the URB */ 443 usb_fill_bulk_urb(urb, dev->udev, 444 usb_sndbulkpipe(dev->udev, PCAN_USBPRO_EP_CMDOUT), 445 buf, pc - buf, 446 pcan_usb_pro_restart_complete, dev); 447 448 /* and submit it. */ 449 return usb_submit_urb(urb, GFP_ATOMIC); 450 } 451 452 static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded) 453 { 454 struct pcan_usb_fd_device *pdev = 455 container_of(dev, struct pcan_usb_fd_device, dev); 456 457 pdev->cmd_buffer_addr[0] = 0; 458 pdev->cmd_buffer_addr[1] = !!loaded; 459 460 return pcan_usb_pro_send_req(dev, 461 PCAN_USBPRO_REQ_FCT, 462 PCAN_USBPRO_FCT_DRVLD, 463 pdev->cmd_buffer_addr, 464 PCAN_USBPRO_FCT_DRVLD_REQ_LEN); 465 } 466 467 static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if, 468 struct pucan_msg *rx_msg) 469 { 470 struct pucan_rx_msg *rm = (struct pucan_rx_msg *)rx_msg; 471 struct peak_usb_device *dev; 472 struct net_device *netdev; 473 struct canfd_frame *cfd; 474 struct sk_buff *skb; 475 const u16 rx_msg_flags = le16_to_cpu(rm->flags); 476 477 if (pucan_msg_get_channel(rm) >= ARRAY_SIZE(usb_if->dev)) 478 return -ENOMEM; 479 480 dev = usb_if->dev[pucan_msg_get_channel(rm)]; 481 netdev = dev->netdev; 482 483 if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN) { 484 /* CANFD frame case */ 485 skb = alloc_canfd_skb(netdev, &cfd); 486 if (!skb) 487 return -ENOMEM; 488 489 if (rx_msg_flags & PUCAN_MSG_BITRATE_SWITCH) 490 cfd->flags |= CANFD_BRS; 491 492 if (rx_msg_flags & PUCAN_MSG_ERROR_STATE_IND) 493 cfd->flags |= CANFD_ESI; 494 495 cfd->len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(rm))); 496 } else { 497 /* CAN 2.0 frame case */ 498 skb = alloc_can_skb(netdev, (struct can_frame **)&cfd); 499 if (!skb) 500 return -ENOMEM; 501 502 cfd->len = get_can_dlc(pucan_msg_get_dlc(rm)); 503 } 504 505 cfd->can_id = le32_to_cpu(rm->can_id); 506 507 if (rx_msg_flags & PUCAN_MSG_EXT_ID) 508 cfd->can_id |= CAN_EFF_FLAG; 509 510 if (rx_msg_flags & PUCAN_MSG_RTR) 511 cfd->can_id |= CAN_RTR_FLAG; 512 else 513 memcpy(cfd->data, rm->d, cfd->len); 514 515 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(rm->ts_low)); 516 517 netdev->stats.rx_packets++; 518 netdev->stats.rx_bytes += cfd->len; 519 520 return 0; 521 } 522 523 /* handle uCAN status message */ 524 static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, 525 struct pucan_msg *rx_msg) 526 { 527 struct pucan_status_msg *sm = (struct pucan_status_msg *)rx_msg; 528 struct pcan_usb_fd_device *pdev; 529 enum can_state new_state = CAN_STATE_ERROR_ACTIVE; 530 enum can_state rx_state, tx_state; 531 struct peak_usb_device *dev; 532 struct net_device *netdev; 533 struct can_frame *cf; 534 struct sk_buff *skb; 535 536 if (pucan_stmsg_get_channel(sm) >= ARRAY_SIZE(usb_if->dev)) 537 return -ENOMEM; 538 539 dev = usb_if->dev[pucan_stmsg_get_channel(sm)]; 540 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 541 netdev = dev->netdev; 542 543 /* nothing should be sent while in BUS_OFF state */ 544 if (dev->can.state == CAN_STATE_BUS_OFF) 545 return 0; 546 547 if (sm->channel_p_w_b & PUCAN_BUS_BUSOFF) { 548 new_state = CAN_STATE_BUS_OFF; 549 } else if (sm->channel_p_w_b & PUCAN_BUS_PASSIVE) { 550 new_state = CAN_STATE_ERROR_PASSIVE; 551 } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) { 552 new_state = CAN_STATE_ERROR_WARNING; 553 } else { 554 /* no error bit (so, no error skb, back to active state) */ 555 dev->can.state = CAN_STATE_ERROR_ACTIVE; 556 pdev->bec.txerr = 0; 557 pdev->bec.rxerr = 0; 558 return 0; 559 } 560 561 /* state hasn't changed */ 562 if (new_state == dev->can.state) 563 return 0; 564 565 /* handle bus state change */ 566 tx_state = (pdev->bec.txerr >= pdev->bec.rxerr) ? new_state : 0; 567 rx_state = (pdev->bec.txerr <= pdev->bec.rxerr) ? new_state : 0; 568 569 /* allocate an skb to store the error frame */ 570 skb = alloc_can_err_skb(netdev, &cf); 571 if (skb) 572 can_change_state(netdev, cf, tx_state, rx_state); 573 574 /* things must be done even in case of OOM */ 575 if (new_state == CAN_STATE_BUS_OFF) 576 can_bus_off(netdev); 577 578 if (!skb) 579 return -ENOMEM; 580 581 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(sm->ts_low)); 582 583 netdev->stats.rx_packets++; 584 netdev->stats.rx_bytes += cf->can_dlc; 585 586 return 0; 587 } 588 589 /* handle uCAN error message */ 590 static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if, 591 struct pucan_msg *rx_msg) 592 { 593 struct pucan_error_msg *er = (struct pucan_error_msg *)rx_msg; 594 struct pcan_usb_fd_device *pdev; 595 struct peak_usb_device *dev; 596 597 if (pucan_ermsg_get_channel(er) >= ARRAY_SIZE(usb_if->dev)) 598 return -EINVAL; 599 600 dev = usb_if->dev[pucan_ermsg_get_channel(er)]; 601 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 602 603 /* keep a trace of tx and rx error counters for later use */ 604 pdev->bec.txerr = er->tx_err_cnt; 605 pdev->bec.rxerr = er->rx_err_cnt; 606 607 return 0; 608 } 609 610 /* handle uCAN overrun message */ 611 static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if, 612 struct pucan_msg *rx_msg) 613 { 614 struct pcan_ufd_ovr_msg *ov = (struct pcan_ufd_ovr_msg *)rx_msg; 615 struct peak_usb_device *dev; 616 struct net_device *netdev; 617 struct can_frame *cf; 618 struct sk_buff *skb; 619 620 if (pufd_omsg_get_channel(ov) >= ARRAY_SIZE(usb_if->dev)) 621 return -EINVAL; 622 623 dev = usb_if->dev[pufd_omsg_get_channel(ov)]; 624 netdev = dev->netdev; 625 626 /* allocate an skb to store the error frame */ 627 skb = alloc_can_err_skb(netdev, &cf); 628 if (!skb) 629 return -ENOMEM; 630 631 cf->can_id |= CAN_ERR_CRTL; 632 cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW; 633 634 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(ov->ts_low)); 635 636 netdev->stats.rx_over_errors++; 637 netdev->stats.rx_errors++; 638 639 return 0; 640 } 641 642 /* handle USB calibration message */ 643 static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if, 644 struct pucan_msg *rx_msg) 645 { 646 struct pcan_ufd_ts_msg *ts = (struct pcan_ufd_ts_msg *)rx_msg; 647 648 /* should wait until clock is stabilized */ 649 if (usb_if->cm_ignore_count > 0) 650 usb_if->cm_ignore_count--; 651 else 652 peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low)); 653 } 654 655 /* callback for bulk IN urb */ 656 static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb) 657 { 658 struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev); 659 struct net_device *netdev = dev->netdev; 660 struct pucan_msg *rx_msg; 661 u8 *msg_ptr, *msg_end; 662 int err = 0; 663 664 /* loop reading all the records from the incoming message */ 665 msg_ptr = urb->transfer_buffer; 666 msg_end = urb->transfer_buffer + urb->actual_length; 667 for (; msg_ptr < msg_end;) { 668 u16 rx_msg_type, rx_msg_size; 669 670 rx_msg = (struct pucan_msg *)msg_ptr; 671 if (!rx_msg->size) { 672 /* null packet found: end of list */ 673 break; 674 } 675 676 rx_msg_size = le16_to_cpu(rx_msg->size); 677 rx_msg_type = le16_to_cpu(rx_msg->type); 678 679 /* check if the record goes out of current packet */ 680 if (msg_ptr + rx_msg_size > msg_end) { 681 netdev_err(netdev, 682 "got frag rec: should inc usb rx buf sze\n"); 683 err = -EBADMSG; 684 break; 685 } 686 687 switch (rx_msg_type) { 688 case PUCAN_MSG_CAN_RX: 689 err = pcan_usb_fd_decode_canmsg(usb_if, rx_msg); 690 if (err < 0) 691 goto fail; 692 break; 693 694 case PCAN_UFD_MSG_CALIBRATION: 695 pcan_usb_fd_decode_ts(usb_if, rx_msg); 696 break; 697 698 case PUCAN_MSG_ERROR: 699 err = pcan_usb_fd_decode_error(usb_if, rx_msg); 700 if (err < 0) 701 goto fail; 702 break; 703 704 case PUCAN_MSG_STATUS: 705 err = pcan_usb_fd_decode_status(usb_if, rx_msg); 706 if (err < 0) 707 goto fail; 708 break; 709 710 case PCAN_UFD_MSG_OVERRUN: 711 err = pcan_usb_fd_decode_overrun(usb_if, rx_msg); 712 if (err < 0) 713 goto fail; 714 break; 715 716 default: 717 netdev_err(netdev, 718 "unhandled msg type 0x%02x (%d): ignored\n", 719 rx_msg_type, rx_msg_type); 720 break; 721 } 722 723 msg_ptr += rx_msg_size; 724 } 725 726 fail: 727 if (err) 728 pcan_dump_mem("received msg", 729 urb->transfer_buffer, urb->actual_length); 730 return err; 731 } 732 733 /* CAN/CANFD frames encoding callback */ 734 static int pcan_usb_fd_encode_msg(struct peak_usb_device *dev, 735 struct sk_buff *skb, u8 *obuf, size_t *size) 736 { 737 struct pucan_tx_msg *tx_msg = (struct pucan_tx_msg *)obuf; 738 struct canfd_frame *cfd = (struct canfd_frame *)skb->data; 739 u16 tx_msg_size, tx_msg_flags; 740 u8 can_dlc; 741 742 if (cfd->len > CANFD_MAX_DLEN) 743 return -EINVAL; 744 745 tx_msg_size = ALIGN(sizeof(struct pucan_tx_msg) + cfd->len, 4); 746 tx_msg->size = cpu_to_le16(tx_msg_size); 747 tx_msg->type = cpu_to_le16(PUCAN_MSG_CAN_TX); 748 749 tx_msg_flags = 0; 750 if (cfd->can_id & CAN_EFF_FLAG) { 751 tx_msg_flags |= PUCAN_MSG_EXT_ID; 752 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_EFF_MASK); 753 } else { 754 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_SFF_MASK); 755 } 756 757 if (can_is_canfd_skb(skb)) { 758 /* considering a CANFD frame */ 759 can_dlc = can_len2dlc(cfd->len); 760 761 tx_msg_flags |= PUCAN_MSG_EXT_DATA_LEN; 762 763 if (cfd->flags & CANFD_BRS) 764 tx_msg_flags |= PUCAN_MSG_BITRATE_SWITCH; 765 766 if (cfd->flags & CANFD_ESI) 767 tx_msg_flags |= PUCAN_MSG_ERROR_STATE_IND; 768 } else { 769 /* CAND 2.0 frames */ 770 can_dlc = cfd->len; 771 772 if (cfd->can_id & CAN_RTR_FLAG) 773 tx_msg_flags |= PUCAN_MSG_RTR; 774 } 775 776 tx_msg->flags = cpu_to_le16(tx_msg_flags); 777 tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, can_dlc); 778 memcpy(tx_msg->d, cfd->data, cfd->len); 779 780 /* add null size message to tag the end (messages are 32-bits aligned) 781 */ 782 tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size); 783 784 tx_msg->size = 0; 785 786 /* set the whole size of the USB packet to send */ 787 *size = tx_msg_size + sizeof(u32); 788 789 return 0; 790 } 791 792 /* start the interface (last chance before set bus on) */ 793 static int pcan_usb_fd_start(struct peak_usb_device *dev) 794 { 795 struct pcan_usb_fd_device *pdev = 796 container_of(dev, struct pcan_usb_fd_device, dev); 797 int err; 798 799 /* set filter mode: all acceptance */ 800 err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff); 801 if (err) 802 return err; 803 804 /* opening first device: */ 805 if (pdev->usb_if->dev_opened_count == 0) { 806 /* reset time_ref */ 807 peak_usb_init_time_ref(&pdev->usb_if->time_ref, 808 &pcan_usb_pro_fd); 809 810 /* enable USB calibration messages */ 811 err = pcan_usb_fd_set_options(dev, 1, 812 PUCAN_OPTION_ERROR, 813 PCAN_UFD_FLTEXT_CALIBRATION); 814 } 815 816 pdev->usb_if->dev_opened_count++; 817 818 /* reset cached error counters */ 819 pdev->bec.txerr = 0; 820 pdev->bec.rxerr = 0; 821 822 return err; 823 } 824 825 /* socket callback used to copy berr counters values received through USB */ 826 static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev, 827 struct can_berr_counter *bec) 828 { 829 struct peak_usb_device *dev = netdev_priv(netdev); 830 struct pcan_usb_fd_device *pdev = 831 container_of(dev, struct pcan_usb_fd_device, dev); 832 833 *bec = pdev->bec; 834 835 /* must return 0 */ 836 return 0; 837 } 838 839 /* stop interface (last chance before set bus off) */ 840 static int pcan_usb_fd_stop(struct peak_usb_device *dev) 841 { 842 struct pcan_usb_fd_device *pdev = 843 container_of(dev, struct pcan_usb_fd_device, dev); 844 845 /* turn off special msgs for that interface if no other dev opened */ 846 if (pdev->usb_if->dev_opened_count == 1) 847 pcan_usb_fd_set_options(dev, 0, 848 PUCAN_OPTION_ERROR, 849 PCAN_UFD_FLTEXT_CALIBRATION); 850 pdev->usb_if->dev_opened_count--; 851 852 return 0; 853 } 854 855 /* called when probing, to initialize a device object */ 856 static int pcan_usb_fd_init(struct peak_usb_device *dev) 857 { 858 struct pcan_usb_fd_device *pdev = 859 container_of(dev, struct pcan_usb_fd_device, dev); 860 int i, err = -ENOMEM; 861 862 /* do this for 1st channel only */ 863 if (!dev->prev_siblings) { 864 /* allocate netdevices common structure attached to first one */ 865 pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL); 866 if (!pdev->usb_if) 867 goto err_out; 868 869 /* allocate command buffer once for all for the interface */ 870 pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE, 871 GFP_KERNEL); 872 if (!pdev->cmd_buffer_addr) 873 goto err_out_1; 874 875 /* number of ts msgs to ignore before taking one into account */ 876 pdev->usb_if->cm_ignore_count = 5; 877 878 err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, 879 PCAN_USBPRO_INFO_FW, 880 &pdev->usb_if->fw_info, 881 sizeof(pdev->usb_if->fw_info)); 882 if (err) { 883 dev_err(dev->netdev->dev.parent, 884 "unable to read %s firmware info (err %d)\n", 885 dev->adapter->name, err); 886 goto err_out_2; 887 } 888 889 /* explicit use of dev_xxx() instead of netdev_xxx() here: 890 * information displayed are related to the device itself, not 891 * to the canx (channel) device. 892 */ 893 dev_info(dev->netdev->dev.parent, 894 "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n", 895 dev->adapter->name, pdev->usb_if->fw_info.hw_version, 896 pdev->usb_if->fw_info.fw_version[0], 897 pdev->usb_if->fw_info.fw_version[1], 898 pdev->usb_if->fw_info.fw_version[2], 899 dev->adapter->ctrl_count); 900 901 /* check for ability to switch between ISO/non-ISO modes */ 902 if (pdev->usb_if->fw_info.fw_version[0] >= 2) { 903 /* firmware >= 2.x supports ISO/non-ISO switching */ 904 dev->can.ctrlmode_supported |= CAN_CTRLMODE_FD_NON_ISO; 905 } else { 906 /* firmware < 2.x only supports fixed(!) non-ISO */ 907 dev->can.ctrlmode |= CAN_CTRLMODE_FD_NON_ISO; 908 } 909 910 /* tell the hardware the can driver is running */ 911 err = pcan_usb_fd_drv_loaded(dev, 1); 912 if (err) { 913 dev_err(dev->netdev->dev.parent, 914 "unable to tell %s driver is loaded (err %d)\n", 915 dev->adapter->name, err); 916 goto err_out_2; 917 } 918 } else { 919 /* otherwise, simply copy previous sibling's values */ 920 struct pcan_usb_fd_device *ppdev = 921 container_of(dev->prev_siblings, 922 struct pcan_usb_fd_device, dev); 923 924 pdev->usb_if = ppdev->usb_if; 925 pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr; 926 927 /* do a copy of the ctrlmode[_supported] too */ 928 dev->can.ctrlmode = ppdev->dev.can.ctrlmode; 929 dev->can.ctrlmode_supported = ppdev->dev.can.ctrlmode_supported; 930 } 931 932 pdev->usb_if->dev[dev->ctrl_idx] = dev; 933 dev->device_number = 934 le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]); 935 936 /* set clock domain */ 937 for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++) 938 if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i]) 939 break; 940 941 if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) { 942 dev_warn(dev->netdev->dev.parent, 943 "incompatible clock frequencies\n"); 944 err = -EINVAL; 945 goto err_out_2; 946 } 947 948 pcan_usb_fd_set_clock_domain(dev, i); 949 950 /* set LED in default state (end of init phase) */ 951 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF); 952 953 return 0; 954 955 err_out_2: 956 kfree(pdev->cmd_buffer_addr); 957 err_out_1: 958 kfree(pdev->usb_if); 959 err_out: 960 return err; 961 } 962 963 /* called when driver module is being unloaded */ 964 static void pcan_usb_fd_exit(struct peak_usb_device *dev) 965 { 966 struct pcan_usb_fd_device *pdev = 967 container_of(dev, struct pcan_usb_fd_device, dev); 968 969 /* when rmmod called before unplug and if down, should reset things 970 * before leaving 971 */ 972 if (dev->can.state != CAN_STATE_STOPPED) { 973 /* set bus off on the corresponding channel */ 974 pcan_usb_fd_set_bus(dev, 0); 975 } 976 977 /* switch off corresponding CAN LEDs */ 978 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF); 979 980 /* if channel #0 (only) */ 981 if (dev->ctrl_idx == 0) { 982 /* turn off calibration message if any device were opened */ 983 if (pdev->usb_if->dev_opened_count > 0) 984 pcan_usb_fd_set_options(dev, 0, 985 PUCAN_OPTION_ERROR, 986 PCAN_UFD_FLTEXT_CALIBRATION); 987 988 /* tell USB adapter that the driver is being unloaded */ 989 pcan_usb_fd_drv_loaded(dev, 0); 990 } 991 } 992 993 /* called when the USB adapter is unplugged */ 994 static void pcan_usb_fd_free(struct peak_usb_device *dev) 995 { 996 /* last device: can free shared objects now */ 997 if (!dev->prev_siblings && !dev->next_siblings) { 998 struct pcan_usb_fd_device *pdev = 999 container_of(dev, struct pcan_usb_fd_device, dev); 1000 1001 /* free commands buffer */ 1002 kfree(pdev->cmd_buffer_addr); 1003 1004 /* free usb interface object */ 1005 kfree(pdev->usb_if); 1006 } 1007 } 1008 1009 /* describes the PCAN-USB FD adapter */ 1010 static const struct can_bittiming_const pcan_usb_fd_const = { 1011 .name = "pcan_usb_fd", 1012 .tseg1_min = 1, 1013 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1014 .tseg2_min = 1, 1015 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1016 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1017 .brp_min = 1, 1018 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1019 .brp_inc = 1, 1020 }; 1021 1022 static const struct can_bittiming_const pcan_usb_fd_data_const = { 1023 .name = "pcan_usb_fd", 1024 .tseg1_min = 1, 1025 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1026 .tseg2_min = 1, 1027 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1028 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1029 .brp_min = 1, 1030 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1031 .brp_inc = 1, 1032 }; 1033 1034 const struct peak_usb_adapter pcan_usb_fd = { 1035 .name = "PCAN-USB FD", 1036 .device_id = PCAN_USBFD_PRODUCT_ID, 1037 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1038 .ctrlmode_supported = CAN_CTRLMODE_FD | 1039 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, 1040 .clock = { 1041 .freq = PCAN_UFD_CRYSTAL_HZ, 1042 }, 1043 .bittiming_const = &pcan_usb_fd_const, 1044 .data_bittiming_const = &pcan_usb_fd_data_const, 1045 1046 /* size of device private data */ 1047 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1048 1049 /* timestamps usage */ 1050 .ts_used_bits = 32, 1051 .ts_period = 1000000, /* calibration period in ts. */ 1052 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1053 .us_per_ts_shift = 0, 1054 1055 /* give here messages in/out endpoints */ 1056 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1057 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1058 1059 /* size of rx/tx usb buffers */ 1060 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1061 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1062 1063 /* device callbacks */ 1064 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1065 .dev_init = pcan_usb_fd_init, 1066 1067 .dev_exit = pcan_usb_fd_exit, 1068 .dev_free = pcan_usb_fd_free, 1069 .dev_set_bus = pcan_usb_fd_set_bus, 1070 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1071 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1072 .dev_decode_buf = pcan_usb_fd_decode_buf, 1073 .dev_start = pcan_usb_fd_start, 1074 .dev_stop = pcan_usb_fd_stop, 1075 .dev_restart_async = pcan_usb_fd_restart_async, 1076 .dev_encode_msg = pcan_usb_fd_encode_msg, 1077 1078 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1079 }; 1080 1081 /* describes the PCAN-CHIP USB */ 1082 static const struct can_bittiming_const pcan_usb_chip_const = { 1083 .name = "pcan_chip_usb", 1084 .tseg1_min = 1, 1085 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1086 .tseg2_min = 1, 1087 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1088 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1089 .brp_min = 1, 1090 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1091 .brp_inc = 1, 1092 }; 1093 1094 static const struct can_bittiming_const pcan_usb_chip_data_const = { 1095 .name = "pcan_chip_usb", 1096 .tseg1_min = 1, 1097 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1098 .tseg2_min = 1, 1099 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1100 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1101 .brp_min = 1, 1102 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1103 .brp_inc = 1, 1104 }; 1105 1106 const struct peak_usb_adapter pcan_usb_chip = { 1107 .name = "PCAN-Chip USB", 1108 .device_id = PCAN_USBCHIP_PRODUCT_ID, 1109 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1110 .ctrlmode_supported = CAN_CTRLMODE_FD | 1111 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, 1112 .clock = { 1113 .freq = PCAN_UFD_CRYSTAL_HZ, 1114 }, 1115 .bittiming_const = &pcan_usb_chip_const, 1116 .data_bittiming_const = &pcan_usb_chip_data_const, 1117 1118 /* size of device private data */ 1119 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1120 1121 /* timestamps usage */ 1122 .ts_used_bits = 32, 1123 .ts_period = 1000000, /* calibration period in ts. */ 1124 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1125 .us_per_ts_shift = 0, 1126 1127 /* give here messages in/out endpoints */ 1128 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1129 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1130 1131 /* size of rx/tx usb buffers */ 1132 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1133 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1134 1135 /* device callbacks */ 1136 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1137 .dev_init = pcan_usb_fd_init, 1138 1139 .dev_exit = pcan_usb_fd_exit, 1140 .dev_free = pcan_usb_fd_free, 1141 .dev_set_bus = pcan_usb_fd_set_bus, 1142 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1143 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1144 .dev_decode_buf = pcan_usb_fd_decode_buf, 1145 .dev_start = pcan_usb_fd_start, 1146 .dev_stop = pcan_usb_fd_stop, 1147 .dev_restart_async = pcan_usb_fd_restart_async, 1148 .dev_encode_msg = pcan_usb_fd_encode_msg, 1149 1150 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1151 }; 1152 1153 /* describes the PCAN-USB Pro FD adapter */ 1154 static const struct can_bittiming_const pcan_usb_pro_fd_const = { 1155 .name = "pcan_usb_pro_fd", 1156 .tseg1_min = 1, 1157 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1158 .tseg2_min = 1, 1159 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1160 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1161 .brp_min = 1, 1162 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1163 .brp_inc = 1, 1164 }; 1165 1166 static const struct can_bittiming_const pcan_usb_pro_fd_data_const = { 1167 .name = "pcan_usb_pro_fd", 1168 .tseg1_min = 1, 1169 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1170 .tseg2_min = 1, 1171 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1172 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1173 .brp_min = 1, 1174 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1175 .brp_inc = 1, 1176 }; 1177 1178 const struct peak_usb_adapter pcan_usb_pro_fd = { 1179 .name = "PCAN-USB Pro FD", 1180 .device_id = PCAN_USBPROFD_PRODUCT_ID, 1181 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1182 .ctrlmode_supported = CAN_CTRLMODE_FD | 1183 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, 1184 .clock = { 1185 .freq = PCAN_UFD_CRYSTAL_HZ, 1186 }, 1187 .bittiming_const = &pcan_usb_pro_fd_const, 1188 .data_bittiming_const = &pcan_usb_pro_fd_data_const, 1189 1190 /* size of device private data */ 1191 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1192 1193 /* timestamps usage */ 1194 .ts_used_bits = 32, 1195 .ts_period = 1000000, /* calibration period in ts. */ 1196 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1197 .us_per_ts_shift = 0, 1198 1199 /* give here messages in/out endpoints */ 1200 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1201 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1202 1203 /* size of rx/tx usb buffers */ 1204 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1205 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1206 1207 /* device callbacks */ 1208 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1209 .dev_init = pcan_usb_fd_init, 1210 1211 .dev_exit = pcan_usb_fd_exit, 1212 .dev_free = pcan_usb_fd_free, 1213 .dev_set_bus = pcan_usb_fd_set_bus, 1214 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1215 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1216 .dev_decode_buf = pcan_usb_fd_decode_buf, 1217 .dev_start = pcan_usb_fd_start, 1218 .dev_stop = pcan_usb_fd_stop, 1219 .dev_restart_async = pcan_usb_fd_restart_async, 1220 .dev_encode_msg = pcan_usb_fd_encode_msg, 1221 1222 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1223 }; 1224 1225 /* describes the PCAN-USB X6 adapter */ 1226 static const struct can_bittiming_const pcan_usb_x6_const = { 1227 .name = "pcan_usb_x6", 1228 .tseg1_min = 1, 1229 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1230 .tseg2_min = 1, 1231 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1232 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1233 .brp_min = 1, 1234 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1235 .brp_inc = 1, 1236 }; 1237 1238 static const struct can_bittiming_const pcan_usb_x6_data_const = { 1239 .name = "pcan_usb_x6", 1240 .tseg1_min = 1, 1241 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1242 .tseg2_min = 1, 1243 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1244 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1245 .brp_min = 1, 1246 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1247 .brp_inc = 1, 1248 }; 1249 1250 const struct peak_usb_adapter pcan_usb_x6 = { 1251 .name = "PCAN-USB X6", 1252 .device_id = PCAN_USBX6_PRODUCT_ID, 1253 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1254 .ctrlmode_supported = CAN_CTRLMODE_FD | 1255 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, 1256 .clock = { 1257 .freq = PCAN_UFD_CRYSTAL_HZ, 1258 }, 1259 .bittiming_const = &pcan_usb_x6_const, 1260 .data_bittiming_const = &pcan_usb_x6_data_const, 1261 1262 /* size of device private data */ 1263 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1264 1265 /* timestamps usage */ 1266 .ts_used_bits = 32, 1267 .ts_period = 1000000, /* calibration period in ts. */ 1268 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1269 .us_per_ts_shift = 0, 1270 1271 /* give here messages in/out endpoints */ 1272 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1273 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1274 1275 /* size of rx/tx usb buffers */ 1276 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1277 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1278 1279 /* device callbacks */ 1280 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1281 .dev_init = pcan_usb_fd_init, 1282 1283 .dev_exit = pcan_usb_fd_exit, 1284 .dev_free = pcan_usb_fd_free, 1285 .dev_set_bus = pcan_usb_fd_set_bus, 1286 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1287 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1288 .dev_decode_buf = pcan_usb_fd_decode_buf, 1289 .dev_start = pcan_usb_fd_start, 1290 .dev_stop = pcan_usb_fd_stop, 1291 .dev_restart_async = pcan_usb_fd_restart_async, 1292 .dev_encode_msg = pcan_usb_fd_encode_msg, 1293 1294 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1295 }; 1296