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_fd_dlc2len(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 can_frame_set_cc_len((struct can_frame *)cfd, 503 pucan_msg_get_dlc(rm), 504 dev->can.ctrlmode); 505 } 506 507 cfd->can_id = le32_to_cpu(rm->can_id); 508 509 if (rx_msg_flags & PUCAN_MSG_EXT_ID) 510 cfd->can_id |= CAN_EFF_FLAG; 511 512 if (rx_msg_flags & PUCAN_MSG_RTR) 513 cfd->can_id |= CAN_RTR_FLAG; 514 else 515 memcpy(cfd->data, rm->d, cfd->len); 516 517 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(rm->ts_low)); 518 519 netdev->stats.rx_packets++; 520 netdev->stats.rx_bytes += cfd->len; 521 522 return 0; 523 } 524 525 /* handle uCAN status message */ 526 static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, 527 struct pucan_msg *rx_msg) 528 { 529 struct pucan_status_msg *sm = (struct pucan_status_msg *)rx_msg; 530 struct pcan_usb_fd_device *pdev; 531 enum can_state new_state = CAN_STATE_ERROR_ACTIVE; 532 enum can_state rx_state, tx_state; 533 struct peak_usb_device *dev; 534 struct net_device *netdev; 535 struct can_frame *cf; 536 struct sk_buff *skb; 537 538 if (pucan_stmsg_get_channel(sm) >= ARRAY_SIZE(usb_if->dev)) 539 return -ENOMEM; 540 541 dev = usb_if->dev[pucan_stmsg_get_channel(sm)]; 542 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 543 netdev = dev->netdev; 544 545 /* nothing should be sent while in BUS_OFF state */ 546 if (dev->can.state == CAN_STATE_BUS_OFF) 547 return 0; 548 549 if (sm->channel_p_w_b & PUCAN_BUS_BUSOFF) { 550 new_state = CAN_STATE_BUS_OFF; 551 } else if (sm->channel_p_w_b & PUCAN_BUS_PASSIVE) { 552 new_state = CAN_STATE_ERROR_PASSIVE; 553 } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) { 554 new_state = CAN_STATE_ERROR_WARNING; 555 } else { 556 /* no error bit (so, no error skb, back to active state) */ 557 dev->can.state = CAN_STATE_ERROR_ACTIVE; 558 pdev->bec.txerr = 0; 559 pdev->bec.rxerr = 0; 560 return 0; 561 } 562 563 /* state hasn't changed */ 564 if (new_state == dev->can.state) 565 return 0; 566 567 /* handle bus state change */ 568 tx_state = (pdev->bec.txerr >= pdev->bec.rxerr) ? new_state : 0; 569 rx_state = (pdev->bec.txerr <= pdev->bec.rxerr) ? new_state : 0; 570 571 /* allocate an skb to store the error frame */ 572 skb = alloc_can_err_skb(netdev, &cf); 573 if (skb) 574 can_change_state(netdev, cf, tx_state, rx_state); 575 576 /* things must be done even in case of OOM */ 577 if (new_state == CAN_STATE_BUS_OFF) 578 can_bus_off(netdev); 579 580 if (!skb) 581 return -ENOMEM; 582 583 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(sm->ts_low)); 584 585 netdev->stats.rx_packets++; 586 netdev->stats.rx_bytes += cf->len; 587 588 return 0; 589 } 590 591 /* handle uCAN error message */ 592 static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if, 593 struct pucan_msg *rx_msg) 594 { 595 struct pucan_error_msg *er = (struct pucan_error_msg *)rx_msg; 596 struct pcan_usb_fd_device *pdev; 597 struct peak_usb_device *dev; 598 599 if (pucan_ermsg_get_channel(er) >= ARRAY_SIZE(usb_if->dev)) 600 return -EINVAL; 601 602 dev = usb_if->dev[pucan_ermsg_get_channel(er)]; 603 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 604 605 /* keep a trace of tx and rx error counters for later use */ 606 pdev->bec.txerr = er->tx_err_cnt; 607 pdev->bec.rxerr = er->rx_err_cnt; 608 609 return 0; 610 } 611 612 /* handle uCAN overrun message */ 613 static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if, 614 struct pucan_msg *rx_msg) 615 { 616 struct pcan_ufd_ovr_msg *ov = (struct pcan_ufd_ovr_msg *)rx_msg; 617 struct peak_usb_device *dev; 618 struct net_device *netdev; 619 struct can_frame *cf; 620 struct sk_buff *skb; 621 622 if (pufd_omsg_get_channel(ov) >= ARRAY_SIZE(usb_if->dev)) 623 return -EINVAL; 624 625 dev = usb_if->dev[pufd_omsg_get_channel(ov)]; 626 netdev = dev->netdev; 627 628 /* allocate an skb to store the error frame */ 629 skb = alloc_can_err_skb(netdev, &cf); 630 if (!skb) 631 return -ENOMEM; 632 633 cf->can_id |= CAN_ERR_CRTL; 634 cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW; 635 636 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(ov->ts_low)); 637 638 netdev->stats.rx_over_errors++; 639 netdev->stats.rx_errors++; 640 641 return 0; 642 } 643 644 /* handle USB calibration message */ 645 static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if, 646 struct pucan_msg *rx_msg) 647 { 648 struct pcan_ufd_ts_msg *ts = (struct pcan_ufd_ts_msg *)rx_msg; 649 650 /* should wait until clock is stabilized */ 651 if (usb_if->cm_ignore_count > 0) 652 usb_if->cm_ignore_count--; 653 else 654 peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low)); 655 } 656 657 /* callback for bulk IN urb */ 658 static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb) 659 { 660 struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev); 661 struct net_device *netdev = dev->netdev; 662 struct pucan_msg *rx_msg; 663 u8 *msg_ptr, *msg_end; 664 int err = 0; 665 666 /* loop reading all the records from the incoming message */ 667 msg_ptr = urb->transfer_buffer; 668 msg_end = urb->transfer_buffer + urb->actual_length; 669 for (; msg_ptr < msg_end;) { 670 u16 rx_msg_type, rx_msg_size; 671 672 rx_msg = (struct pucan_msg *)msg_ptr; 673 if (!rx_msg->size) { 674 /* null packet found: end of list */ 675 break; 676 } 677 678 rx_msg_size = le16_to_cpu(rx_msg->size); 679 rx_msg_type = le16_to_cpu(rx_msg->type); 680 681 /* check if the record goes out of current packet */ 682 if (msg_ptr + rx_msg_size > msg_end) { 683 netdev_err(netdev, 684 "got frag rec: should inc usb rx buf sze\n"); 685 err = -EBADMSG; 686 break; 687 } 688 689 switch (rx_msg_type) { 690 case PUCAN_MSG_CAN_RX: 691 err = pcan_usb_fd_decode_canmsg(usb_if, rx_msg); 692 if (err < 0) 693 goto fail; 694 break; 695 696 case PCAN_UFD_MSG_CALIBRATION: 697 pcan_usb_fd_decode_ts(usb_if, rx_msg); 698 break; 699 700 case PUCAN_MSG_ERROR: 701 err = pcan_usb_fd_decode_error(usb_if, rx_msg); 702 if (err < 0) 703 goto fail; 704 break; 705 706 case PUCAN_MSG_STATUS: 707 err = pcan_usb_fd_decode_status(usb_if, rx_msg); 708 if (err < 0) 709 goto fail; 710 break; 711 712 case PCAN_UFD_MSG_OVERRUN: 713 err = pcan_usb_fd_decode_overrun(usb_if, rx_msg); 714 if (err < 0) 715 goto fail; 716 break; 717 718 default: 719 netdev_err(netdev, 720 "unhandled msg type 0x%02x (%d): ignored\n", 721 rx_msg_type, rx_msg_type); 722 break; 723 } 724 725 msg_ptr += rx_msg_size; 726 } 727 728 fail: 729 if (err) 730 pcan_dump_mem("received msg", 731 urb->transfer_buffer, urb->actual_length); 732 return err; 733 } 734 735 /* CAN/CANFD frames encoding callback */ 736 static int pcan_usb_fd_encode_msg(struct peak_usb_device *dev, 737 struct sk_buff *skb, u8 *obuf, size_t *size) 738 { 739 struct pucan_tx_msg *tx_msg = (struct pucan_tx_msg *)obuf; 740 struct canfd_frame *cfd = (struct canfd_frame *)skb->data; 741 u16 tx_msg_size, tx_msg_flags; 742 u8 dlc; 743 744 if (cfd->len > CANFD_MAX_DLEN) 745 return -EINVAL; 746 747 tx_msg_size = ALIGN(sizeof(struct pucan_tx_msg) + cfd->len, 4); 748 tx_msg->size = cpu_to_le16(tx_msg_size); 749 tx_msg->type = cpu_to_le16(PUCAN_MSG_CAN_TX); 750 751 tx_msg_flags = 0; 752 if (cfd->can_id & CAN_EFF_FLAG) { 753 tx_msg_flags |= PUCAN_MSG_EXT_ID; 754 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_EFF_MASK); 755 } else { 756 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_SFF_MASK); 757 } 758 759 if (can_is_canfd_skb(skb)) { 760 /* considering a CANFD frame */ 761 dlc = can_fd_len2dlc(cfd->len); 762 763 tx_msg_flags |= PUCAN_MSG_EXT_DATA_LEN; 764 765 if (cfd->flags & CANFD_BRS) 766 tx_msg_flags |= PUCAN_MSG_BITRATE_SWITCH; 767 768 if (cfd->flags & CANFD_ESI) 769 tx_msg_flags |= PUCAN_MSG_ERROR_STATE_IND; 770 } else { 771 /* CAND 2.0 frames */ 772 dlc = can_get_cc_dlc((struct can_frame *)cfd, 773 dev->can.ctrlmode); 774 775 if (cfd->can_id & CAN_RTR_FLAG) 776 tx_msg_flags |= PUCAN_MSG_RTR; 777 } 778 779 tx_msg->flags = cpu_to_le16(tx_msg_flags); 780 tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, dlc); 781 memcpy(tx_msg->d, cfd->data, cfd->len); 782 783 /* add null size message to tag the end (messages are 32-bits aligned) 784 */ 785 tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size); 786 787 tx_msg->size = 0; 788 789 /* set the whole size of the USB packet to send */ 790 *size = tx_msg_size + sizeof(u32); 791 792 return 0; 793 } 794 795 /* start the interface (last chance before set bus on) */ 796 static int pcan_usb_fd_start(struct peak_usb_device *dev) 797 { 798 struct pcan_usb_fd_device *pdev = 799 container_of(dev, struct pcan_usb_fd_device, dev); 800 int err; 801 802 /* set filter mode: all acceptance */ 803 err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff); 804 if (err) 805 return err; 806 807 /* opening first device: */ 808 if (pdev->usb_if->dev_opened_count == 0) { 809 /* reset time_ref */ 810 peak_usb_init_time_ref(&pdev->usb_if->time_ref, 811 &pcan_usb_pro_fd); 812 813 /* enable USB calibration messages */ 814 err = pcan_usb_fd_set_options(dev, 1, 815 PUCAN_OPTION_ERROR, 816 PCAN_UFD_FLTEXT_CALIBRATION); 817 } 818 819 pdev->usb_if->dev_opened_count++; 820 821 /* reset cached error counters */ 822 pdev->bec.txerr = 0; 823 pdev->bec.rxerr = 0; 824 825 return err; 826 } 827 828 /* socket callback used to copy berr counters values received through USB */ 829 static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev, 830 struct can_berr_counter *bec) 831 { 832 struct peak_usb_device *dev = netdev_priv(netdev); 833 struct pcan_usb_fd_device *pdev = 834 container_of(dev, struct pcan_usb_fd_device, dev); 835 836 *bec = pdev->bec; 837 838 /* must return 0 */ 839 return 0; 840 } 841 842 /* stop interface (last chance before set bus off) */ 843 static int pcan_usb_fd_stop(struct peak_usb_device *dev) 844 { 845 struct pcan_usb_fd_device *pdev = 846 container_of(dev, struct pcan_usb_fd_device, dev); 847 848 /* turn off special msgs for that interface if no other dev opened */ 849 if (pdev->usb_if->dev_opened_count == 1) 850 pcan_usb_fd_set_options(dev, 0, 851 PUCAN_OPTION_ERROR, 852 PCAN_UFD_FLTEXT_CALIBRATION); 853 pdev->usb_if->dev_opened_count--; 854 855 return 0; 856 } 857 858 /* called when probing, to initialize a device object */ 859 static int pcan_usb_fd_init(struct peak_usb_device *dev) 860 { 861 struct pcan_usb_fd_device *pdev = 862 container_of(dev, struct pcan_usb_fd_device, dev); 863 int i, err = -ENOMEM; 864 865 /* do this for 1st channel only */ 866 if (!dev->prev_siblings) { 867 /* allocate netdevices common structure attached to first one */ 868 pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL); 869 if (!pdev->usb_if) 870 goto err_out; 871 872 /* allocate command buffer once for all for the interface */ 873 pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE, 874 GFP_KERNEL); 875 if (!pdev->cmd_buffer_addr) 876 goto err_out_1; 877 878 /* number of ts msgs to ignore before taking one into account */ 879 pdev->usb_if->cm_ignore_count = 5; 880 881 err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, 882 PCAN_USBPRO_INFO_FW, 883 &pdev->usb_if->fw_info, 884 sizeof(pdev->usb_if->fw_info)); 885 if (err) { 886 dev_err(dev->netdev->dev.parent, 887 "unable to read %s firmware info (err %d)\n", 888 dev->adapter->name, err); 889 goto err_out_2; 890 } 891 892 /* explicit use of dev_xxx() instead of netdev_xxx() here: 893 * information displayed are related to the device itself, not 894 * to the canx (channel) device. 895 */ 896 dev_info(dev->netdev->dev.parent, 897 "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n", 898 dev->adapter->name, pdev->usb_if->fw_info.hw_version, 899 pdev->usb_if->fw_info.fw_version[0], 900 pdev->usb_if->fw_info.fw_version[1], 901 pdev->usb_if->fw_info.fw_version[2], 902 dev->adapter->ctrl_count); 903 904 /* check for ability to switch between ISO/non-ISO modes */ 905 if (pdev->usb_if->fw_info.fw_version[0] >= 2) { 906 /* firmware >= 2.x supports ISO/non-ISO switching */ 907 dev->can.ctrlmode_supported |= CAN_CTRLMODE_FD_NON_ISO; 908 } else { 909 /* firmware < 2.x only supports fixed(!) non-ISO */ 910 dev->can.ctrlmode |= CAN_CTRLMODE_FD_NON_ISO; 911 } 912 913 /* tell the hardware the can driver is running */ 914 err = pcan_usb_fd_drv_loaded(dev, 1); 915 if (err) { 916 dev_err(dev->netdev->dev.parent, 917 "unable to tell %s driver is loaded (err %d)\n", 918 dev->adapter->name, err); 919 goto err_out_2; 920 } 921 } else { 922 /* otherwise, simply copy previous sibling's values */ 923 struct pcan_usb_fd_device *ppdev = 924 container_of(dev->prev_siblings, 925 struct pcan_usb_fd_device, dev); 926 927 pdev->usb_if = ppdev->usb_if; 928 pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr; 929 930 /* do a copy of the ctrlmode[_supported] too */ 931 dev->can.ctrlmode = ppdev->dev.can.ctrlmode; 932 dev->can.ctrlmode_supported = ppdev->dev.can.ctrlmode_supported; 933 } 934 935 pdev->usb_if->dev[dev->ctrl_idx] = dev; 936 dev->device_number = 937 le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]); 938 939 /* set clock domain */ 940 for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++) 941 if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i]) 942 break; 943 944 if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) { 945 dev_warn(dev->netdev->dev.parent, 946 "incompatible clock frequencies\n"); 947 err = -EINVAL; 948 goto err_out_2; 949 } 950 951 pcan_usb_fd_set_clock_domain(dev, i); 952 953 /* set LED in default state (end of init phase) */ 954 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF); 955 956 return 0; 957 958 err_out_2: 959 kfree(pdev->cmd_buffer_addr); 960 err_out_1: 961 kfree(pdev->usb_if); 962 err_out: 963 return err; 964 } 965 966 /* called when driver module is being unloaded */ 967 static void pcan_usb_fd_exit(struct peak_usb_device *dev) 968 { 969 struct pcan_usb_fd_device *pdev = 970 container_of(dev, struct pcan_usb_fd_device, dev); 971 972 /* when rmmod called before unplug and if down, should reset things 973 * before leaving 974 */ 975 if (dev->can.state != CAN_STATE_STOPPED) { 976 /* set bus off on the corresponding channel */ 977 pcan_usb_fd_set_bus(dev, 0); 978 } 979 980 /* switch off corresponding CAN LEDs */ 981 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF); 982 983 /* if channel #0 (only) */ 984 if (dev->ctrl_idx == 0) { 985 /* turn off calibration message if any device were opened */ 986 if (pdev->usb_if->dev_opened_count > 0) 987 pcan_usb_fd_set_options(dev, 0, 988 PUCAN_OPTION_ERROR, 989 PCAN_UFD_FLTEXT_CALIBRATION); 990 991 /* tell USB adapter that the driver is being unloaded */ 992 pcan_usb_fd_drv_loaded(dev, 0); 993 } 994 } 995 996 /* called when the USB adapter is unplugged */ 997 static void pcan_usb_fd_free(struct peak_usb_device *dev) 998 { 999 /* last device: can free shared objects now */ 1000 if (!dev->prev_siblings && !dev->next_siblings) { 1001 struct pcan_usb_fd_device *pdev = 1002 container_of(dev, struct pcan_usb_fd_device, dev); 1003 1004 /* free commands buffer */ 1005 kfree(pdev->cmd_buffer_addr); 1006 1007 /* free usb interface object */ 1008 kfree(pdev->usb_if); 1009 } 1010 } 1011 1012 /* describes the PCAN-USB FD adapter */ 1013 static const struct can_bittiming_const pcan_usb_fd_const = { 1014 .name = "pcan_usb_fd", 1015 .tseg1_min = 1, 1016 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1017 .tseg2_min = 1, 1018 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1019 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1020 .brp_min = 1, 1021 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1022 .brp_inc = 1, 1023 }; 1024 1025 static const struct can_bittiming_const pcan_usb_fd_data_const = { 1026 .name = "pcan_usb_fd", 1027 .tseg1_min = 1, 1028 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1029 .tseg2_min = 1, 1030 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1031 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1032 .brp_min = 1, 1033 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1034 .brp_inc = 1, 1035 }; 1036 1037 const struct peak_usb_adapter pcan_usb_fd = { 1038 .name = "PCAN-USB FD", 1039 .device_id = PCAN_USBFD_PRODUCT_ID, 1040 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1041 .ctrlmode_supported = CAN_CTRLMODE_FD | 1042 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1043 CAN_CTRLMODE_CC_LEN8_DLC, 1044 .clock = { 1045 .freq = PCAN_UFD_CRYSTAL_HZ, 1046 }, 1047 .bittiming_const = &pcan_usb_fd_const, 1048 .data_bittiming_const = &pcan_usb_fd_data_const, 1049 1050 /* size of device private data */ 1051 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1052 1053 /* timestamps usage */ 1054 .ts_used_bits = 32, 1055 .ts_period = 1000000, /* calibration period in ts. */ 1056 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1057 .us_per_ts_shift = 0, 1058 1059 /* give here messages in/out endpoints */ 1060 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1061 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1062 1063 /* size of rx/tx usb buffers */ 1064 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1065 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1066 1067 /* device callbacks */ 1068 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1069 .dev_init = pcan_usb_fd_init, 1070 1071 .dev_exit = pcan_usb_fd_exit, 1072 .dev_free = pcan_usb_fd_free, 1073 .dev_set_bus = pcan_usb_fd_set_bus, 1074 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1075 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1076 .dev_decode_buf = pcan_usb_fd_decode_buf, 1077 .dev_start = pcan_usb_fd_start, 1078 .dev_stop = pcan_usb_fd_stop, 1079 .dev_restart_async = pcan_usb_fd_restart_async, 1080 .dev_encode_msg = pcan_usb_fd_encode_msg, 1081 1082 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1083 }; 1084 1085 /* describes the PCAN-CHIP USB */ 1086 static const struct can_bittiming_const pcan_usb_chip_const = { 1087 .name = "pcan_chip_usb", 1088 .tseg1_min = 1, 1089 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1090 .tseg2_min = 1, 1091 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1092 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1093 .brp_min = 1, 1094 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1095 .brp_inc = 1, 1096 }; 1097 1098 static const struct can_bittiming_const pcan_usb_chip_data_const = { 1099 .name = "pcan_chip_usb", 1100 .tseg1_min = 1, 1101 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1102 .tseg2_min = 1, 1103 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1104 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1105 .brp_min = 1, 1106 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1107 .brp_inc = 1, 1108 }; 1109 1110 const struct peak_usb_adapter pcan_usb_chip = { 1111 .name = "PCAN-Chip USB", 1112 .device_id = PCAN_USBCHIP_PRODUCT_ID, 1113 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1114 .ctrlmode_supported = CAN_CTRLMODE_FD | 1115 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1116 CAN_CTRLMODE_CC_LEN8_DLC, 1117 .clock = { 1118 .freq = PCAN_UFD_CRYSTAL_HZ, 1119 }, 1120 .bittiming_const = &pcan_usb_chip_const, 1121 .data_bittiming_const = &pcan_usb_chip_data_const, 1122 1123 /* size of device private data */ 1124 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1125 1126 /* timestamps usage */ 1127 .ts_used_bits = 32, 1128 .ts_period = 1000000, /* calibration period in ts. */ 1129 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1130 .us_per_ts_shift = 0, 1131 1132 /* give here messages in/out endpoints */ 1133 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1134 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1135 1136 /* size of rx/tx usb buffers */ 1137 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1138 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1139 1140 /* device callbacks */ 1141 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1142 .dev_init = pcan_usb_fd_init, 1143 1144 .dev_exit = pcan_usb_fd_exit, 1145 .dev_free = pcan_usb_fd_free, 1146 .dev_set_bus = pcan_usb_fd_set_bus, 1147 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1148 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1149 .dev_decode_buf = pcan_usb_fd_decode_buf, 1150 .dev_start = pcan_usb_fd_start, 1151 .dev_stop = pcan_usb_fd_stop, 1152 .dev_restart_async = pcan_usb_fd_restart_async, 1153 .dev_encode_msg = pcan_usb_fd_encode_msg, 1154 1155 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1156 }; 1157 1158 /* describes the PCAN-USB Pro FD adapter */ 1159 static const struct can_bittiming_const pcan_usb_pro_fd_const = { 1160 .name = "pcan_usb_pro_fd", 1161 .tseg1_min = 1, 1162 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1163 .tseg2_min = 1, 1164 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1165 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1166 .brp_min = 1, 1167 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1168 .brp_inc = 1, 1169 }; 1170 1171 static const struct can_bittiming_const pcan_usb_pro_fd_data_const = { 1172 .name = "pcan_usb_pro_fd", 1173 .tseg1_min = 1, 1174 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1175 .tseg2_min = 1, 1176 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1177 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1178 .brp_min = 1, 1179 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1180 .brp_inc = 1, 1181 }; 1182 1183 const struct peak_usb_adapter pcan_usb_pro_fd = { 1184 .name = "PCAN-USB Pro FD", 1185 .device_id = PCAN_USBPROFD_PRODUCT_ID, 1186 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1187 .ctrlmode_supported = CAN_CTRLMODE_FD | 1188 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1189 CAN_CTRLMODE_CC_LEN8_DLC, 1190 .clock = { 1191 .freq = PCAN_UFD_CRYSTAL_HZ, 1192 }, 1193 .bittiming_const = &pcan_usb_pro_fd_const, 1194 .data_bittiming_const = &pcan_usb_pro_fd_data_const, 1195 1196 /* size of device private data */ 1197 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1198 1199 /* timestamps usage */ 1200 .ts_used_bits = 32, 1201 .ts_period = 1000000, /* calibration period in ts. */ 1202 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1203 .us_per_ts_shift = 0, 1204 1205 /* give here messages in/out endpoints */ 1206 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1207 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1208 1209 /* size of rx/tx usb buffers */ 1210 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1211 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1212 1213 /* device callbacks */ 1214 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1215 .dev_init = pcan_usb_fd_init, 1216 1217 .dev_exit = pcan_usb_fd_exit, 1218 .dev_free = pcan_usb_fd_free, 1219 .dev_set_bus = pcan_usb_fd_set_bus, 1220 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1221 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1222 .dev_decode_buf = pcan_usb_fd_decode_buf, 1223 .dev_start = pcan_usb_fd_start, 1224 .dev_stop = pcan_usb_fd_stop, 1225 .dev_restart_async = pcan_usb_fd_restart_async, 1226 .dev_encode_msg = pcan_usb_fd_encode_msg, 1227 1228 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1229 }; 1230 1231 /* describes the PCAN-USB X6 adapter */ 1232 static const struct can_bittiming_const pcan_usb_x6_const = { 1233 .name = "pcan_usb_x6", 1234 .tseg1_min = 1, 1235 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1236 .tseg2_min = 1, 1237 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1238 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1239 .brp_min = 1, 1240 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1241 .brp_inc = 1, 1242 }; 1243 1244 static const struct can_bittiming_const pcan_usb_x6_data_const = { 1245 .name = "pcan_usb_x6", 1246 .tseg1_min = 1, 1247 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1248 .tseg2_min = 1, 1249 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1250 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1251 .brp_min = 1, 1252 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1253 .brp_inc = 1, 1254 }; 1255 1256 const struct peak_usb_adapter pcan_usb_x6 = { 1257 .name = "PCAN-USB X6", 1258 .device_id = PCAN_USBX6_PRODUCT_ID, 1259 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1260 .ctrlmode_supported = CAN_CTRLMODE_FD | 1261 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1262 CAN_CTRLMODE_CC_LEN8_DLC, 1263 .clock = { 1264 .freq = PCAN_UFD_CRYSTAL_HZ, 1265 }, 1266 .bittiming_const = &pcan_usb_x6_const, 1267 .data_bittiming_const = &pcan_usb_x6_data_const, 1268 1269 /* size of device private data */ 1270 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1271 1272 /* timestamps usage */ 1273 .ts_used_bits = 32, 1274 .ts_period = 1000000, /* calibration period in ts. */ 1275 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1276 .us_per_ts_shift = 0, 1277 1278 /* give here messages in/out endpoints */ 1279 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1280 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1281 1282 /* size of rx/tx usb buffers */ 1283 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1284 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1285 1286 /* device callbacks */ 1287 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1288 .dev_init = pcan_usb_fd_init, 1289 1290 .dev_exit = pcan_usb_fd_exit, 1291 .dev_free = pcan_usb_fd_free, 1292 .dev_set_bus = pcan_usb_fd_set_bus, 1293 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1294 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1295 .dev_decode_buf = pcan_usb_fd_decode_buf, 1296 .dev_start = pcan_usb_fd_start, 1297 .dev_stop = pcan_usb_fd_stop, 1298 .dev_restart_async = pcan_usb_fd_restart_async, 1299 .dev_encode_msg = pcan_usb_fd_encode_msg, 1300 1301 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1302 }; 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