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pcan_usb_fd.c
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linux-6.19.14/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
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) 2013-2025 PEAK System-Technik GmbH 6 * Author: Stéphane Grosjean <stephane.grosjean@hms-networks.com> 7 */ 8#include <linux/ethtool.h> 9#include <linux/module.h> 10#include <linux/netdevice.h> 11#include <linux/usb.h> 12 13#include <linux/can.h> 14#include <linux/can/dev.h> 15#include <linux/can/error.h> 16#include <linux/can/dev/peak_canfd.h> 17 18#include "pcan_usb_core.h" 19#include "pcan_usb_pro.h" 20 21#define PCAN_USBPROFD_CHANNEL_COUNT 2 22#define PCAN_USBFD_CHANNEL_COUNT 1 23 24/* PCAN-USB Pro FD adapter internal clock (Hz) */ 25#define PCAN_UFD_CRYSTAL_HZ 80000000 26 27#define PCAN_UFD_CMD_BUFFER_SIZE 512 28#define PCAN_UFD_LOSPD_PKT_SIZE 64 29 30/* PCAN-USB Pro FD command timeout (ms.) */ 31#define PCAN_UFD_CMD_TIMEOUT_MS 1000 32 33/* PCAN-USB Pro FD rx/tx buffers size */ 34#define PCAN_UFD_RX_BUFFER_SIZE 2048 35#define PCAN_UFD_TX_BUFFER_SIZE 512 36 37/* struct pcan_ufd_fw_info::type */ 38#define PCAN_USBFD_TYPE_STD 1 39#define PCAN_USBFD_TYPE_EXT 2 /* includes EP numbers */ 40 41/* read some versions info from the hw device */ 42struct __packed pcan_ufd_fw_info { 43 __le16 size_of; /* sizeof this */ 44 __le16 type; /* type of this structure */ 45 u8 hw_type; /* Type of hardware (HW_TYPE_xxx) */ 46 u8 bl_version[3]; /* Bootloader version */ 47 u8 hw_version; /* Hardware version (PCB) */ 48 u8 fw_version[3]; /* Firmware version */ 49 __le32 dev_id[2]; /* "device id" per CAN */ 50 __le32 ser_no; /* S/N */ 51 __le32 flags; /* special functions */ 52 53 /* extended data when type >= PCAN_USBFD_TYPE_EXT */ 54 u8 cmd_out_ep; /* ep for cmd */ 55 u8 cmd_in_ep; /* ep for replies */ 56 u8 data_out_ep[2]; /* ep for CANx TX */ 57 u8 data_in_ep; /* ep for CAN RX */ 58 u8 dummy[3]; 59}; 60 61/* handle device specific info used by the netdevices */ 62struct pcan_usb_fd_if { 63 struct peak_usb_device *dev[PCAN_USB_MAX_CHANNEL]; 64 struct pcan_ufd_fw_info fw_info; 65 struct peak_time_ref time_ref; 66 int cm_ignore_count; 67 int dev_opened_count; 68}; 69 70/* device information */ 71struct pcan_usb_fd_device { 72 struct peak_usb_device dev; 73 struct can_berr_counter bec; 74 struct pcan_usb_fd_if *usb_if; 75 u8 *cmd_buffer_addr; 76}; 77 78/* Extended USB commands (non uCAN commands) */ 79 80/* Clock Modes command */ 81#define PCAN_UFD_CMD_CLK_SET 0x80 82 83#define PCAN_UFD_CLK_80MHZ 0x0 84#define PCAN_UFD_CLK_60MHZ 0x1 85#define PCAN_UFD_CLK_40MHZ 0x2 86#define PCAN_UFD_CLK_30MHZ 0x3 87#define PCAN_UFD_CLK_24MHZ 0x4 88#define PCAN_UFD_CLK_20MHZ 0x5 89#define PCAN_UFD_CLK_DEF PCAN_UFD_CLK_80MHZ 90 91struct __packed pcan_ufd_clock { 92 __le16 opcode_channel; 93 94 u8 mode; 95 u8 unused[5]; 96}; 97 98/* LED control command */ 99#define PCAN_UFD_CMD_LED_SET 0x86 100 101#define PCAN_UFD_LED_DEV 0x00 102#define PCAN_UFD_LED_FAST 0x01 103#define PCAN_UFD_LED_SLOW 0x02 104#define PCAN_UFD_LED_ON 0x03 105#define PCAN_UFD_LED_OFF 0x04 106#define PCAN_UFD_LED_DEF PCAN_UFD_LED_DEV 107 108struct __packed pcan_ufd_led { 109 __le16 opcode_channel; 110 111 u8 mode; 112 u8 unused[5]; 113}; 114 115/* Extended usage of uCAN commands CMD_xxx_xx_OPTION for PCAN-USB Pro FD */ 116#define PCAN_UFD_FLTEXT_CALIBRATION 0x8000 117 118struct __packed pcan_ufd_options { 119 __le16 opcode_channel; 120 121 __le16 ucan_mask; 122 u16 unused; 123 __le16 usb_mask; 124}; 125 126/* Extended usage of uCAN messages for PCAN-USB Pro FD */ 127#define PCAN_UFD_MSG_CALIBRATION 0x100 128 129struct __packed pcan_ufd_ts_msg { 130 __le16 size; 131 __le16 type; 132 __le32 ts_low; 133 __le32 ts_high; 134 __le16 usb_frame_index; 135 u16 unused; 136}; 137 138#define PCAN_UFD_MSG_OVERRUN 0x101 139 140#define PCAN_UFD_OVMSG_CHANNEL(o) ((o)->channel & 0xf) 141 142struct __packed pcan_ufd_ovr_msg { 143 __le16 size; 144 __le16 type; 145 __le32 ts_low; 146 __le32 ts_high; 147 u8 channel; 148 u8 unused[3]; 149}; 150 151#define PCAN_UFD_CMD_DEVID_SET 0x81 152 153struct __packed pcan_ufd_device_id { 154 __le16 opcode_channel; 155 156 u16 unused; 157 __le32 device_id; 158}; 159 160static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om) 161{ 162 return om->channel & 0xf; 163} 164 165/* Clock mode frequency values */ 166static const u32 pcan_usb_fd_clk_freq[6] = { 167 [PCAN_UFD_CLK_80MHZ] = 80000000, 168 [PCAN_UFD_CLK_60MHZ] = 60000000, 169 [PCAN_UFD_CLK_40MHZ] = 40000000, 170 [PCAN_UFD_CLK_30MHZ] = 30000000, 171 [PCAN_UFD_CLK_24MHZ] = 24000000, 172 [PCAN_UFD_CLK_20MHZ] = 20000000 173}; 174 175/* return a device USB interface */ 176static inline 177struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev) 178{ 179 struct pcan_usb_fd_device *pdev = 180 container_of(dev, struct pcan_usb_fd_device, dev); 181 return pdev->usb_if; 182} 183 184/* return a device USB commands buffer */ 185static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev) 186{ 187 struct pcan_usb_fd_device *pdev = 188 container_of(dev, struct pcan_usb_fd_device, dev); 189 return pdev->cmd_buffer_addr; 190} 191 192/* send PCAN-USB Pro FD commands synchronously */ 193static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) 194{ 195 struct pcan_usb_fd_device *pdev = 196 container_of(dev, struct pcan_usb_fd_device, dev); 197 struct pcan_ufd_fw_info *fw_info = &pdev->usb_if->fw_info; 198 void *cmd_head = pcan_usb_fd_cmd_buffer(dev); 199 int err = 0; 200 u8 *packet_ptr; 201 int packet_len; 202 ptrdiff_t cmd_len; 203 204 /* usb device unregistered? */ 205 if (!(dev->state & PCAN_USB_STATE_CONNECTED)) 206 return 0; 207 208 /* if a packet is not filled completely by commands, the command list 209 * is terminated with an "end of collection" record. 210 */ 211 cmd_len = cmd_tail - cmd_head; 212 if (cmd_len <= (PCAN_UFD_CMD_BUFFER_SIZE - sizeof(u64))) { 213 memset(cmd_tail, 0xff, sizeof(u64)); 214 cmd_len += sizeof(u64); 215 } 216 217 packet_ptr = cmd_head; 218 packet_len = cmd_len; 219 220 /* firmware is not able to re-assemble 512 bytes buffer in full-speed */ 221 if (unlikely(dev->udev->speed != USB_SPEED_HIGH)) 222 packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE); 223 224 do { 225 err = usb_bulk_msg(dev->udev, 226 usb_sndbulkpipe(dev->udev, 227 fw_info->cmd_out_ep), 228 packet_ptr, packet_len, 229 NULL, PCAN_UFD_CMD_TIMEOUT_MS); 230 if (err) { 231 netdev_err(dev->netdev, 232 "sending command failure: %d\n", err); 233 break; 234 } 235 236 packet_ptr += packet_len; 237 cmd_len -= packet_len; 238 239 if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE) 240 packet_len = cmd_len; 241 242 } while (packet_len > 0); 243 244 return err; 245} 246 247static int pcan_usb_fd_read_fwinfo(struct peak_usb_device *dev, 248 struct pcan_ufd_fw_info *fw_info) 249{ 250 return pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, 251 PCAN_USBPRO_INFO_FW, 252 fw_info, 253 sizeof(*fw_info)); 254} 255 256/* build the commands list in the given buffer, to enter operational mode */ 257static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf) 258{ 259 struct pucan_wr_err_cnt *prc; 260 struct pucan_command *cmd; 261 u8 *pc = buf; 262 263 /* 1st, reset error counters: */ 264 prc = (struct pucan_wr_err_cnt *)pc; 265 prc->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 266 PUCAN_CMD_WR_ERR_CNT); 267 268 /* select both counters */ 269 prc->sel_mask = cpu_to_le16(PUCAN_WRERRCNT_TE|PUCAN_WRERRCNT_RE); 270 271 /* and reset their values */ 272 prc->tx_counter = 0; 273 prc->rx_counter = 0; 274 275 /* moves the pointer forward */ 276 pc += sizeof(struct pucan_wr_err_cnt); 277 278 /* add command to switch from ISO to non-ISO mode, if fw allows it */ 279 if (dev->can.ctrlmode_supported & CAN_CTRLMODE_FD_NON_ISO) { 280 struct pucan_options *puo = (struct pucan_options *)pc; 281 282 puo->opcode_channel = 283 (dev->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO) ? 284 pucan_cmd_opcode_channel(dev->ctrl_idx, 285 PUCAN_CMD_CLR_DIS_OPTION) : 286 pucan_cmd_opcode_channel(dev->ctrl_idx, 287 PUCAN_CMD_SET_EN_OPTION); 288 289 puo->options = cpu_to_le16(PUCAN_OPTION_CANDFDISO); 290 291 /* to be sure that no other extended bits will be taken into 292 * account 293 */ 294 puo->unused = 0; 295 296 /* moves the pointer forward */ 297 pc += sizeof(struct pucan_options); 298 } 299 300 /* next, go back to operational mode */ 301 cmd = (struct pucan_command *)pc; 302 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 303 (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) ? 304 PUCAN_CMD_LISTEN_ONLY_MODE : 305 PUCAN_CMD_NORMAL_MODE); 306 pc += sizeof(struct pucan_command); 307 308 return pc - buf; 309} 310 311/* set CAN bus on/off */ 312static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff) 313{ 314 u8 *pc = pcan_usb_fd_cmd_buffer(dev); 315 int l; 316 317 if (onoff) { 318 /* build the cmds list to enter operational mode */ 319 l = pcan_usb_fd_build_restart_cmd(dev, pc); 320 } else { 321 struct pucan_command *cmd = (struct pucan_command *)pc; 322 323 /* build cmd to go back to reset mode */ 324 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 325 PUCAN_CMD_RESET_MODE); 326 l = sizeof(struct pucan_command); 327 } 328 329 /* send the command */ 330 return pcan_usb_fd_send_cmd(dev, pc + l); 331} 332 333/* set filtering masks: 334 * 335 * idx in range [0..63] selects a row #idx, all rows otherwise 336 * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s) 337 * 338 * Each bit of this 64 x 32 bits array defines a CANID value: 339 * 340 * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while 341 * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded. 342 */ 343static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx, 344 u32 mask) 345{ 346 struct pucan_filter_std *cmd = pcan_usb_fd_cmd_buffer(dev); 347 int i, n; 348 349 /* select all rows when idx is out of range [0..63] */ 350 if ((idx < 0) || (idx >= (1 << PUCAN_FLTSTD_ROW_IDX_BITS))) { 351 n = 1 << PUCAN_FLTSTD_ROW_IDX_BITS; 352 idx = 0; 353 354 /* select the row (and only the row) otherwise */ 355 } else { 356 n = idx + 1; 357 } 358 359 for (i = idx; i < n; i++, cmd++) { 360 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 361 PUCAN_CMD_FILTER_STD); 362 cmd->idx = cpu_to_le16(i); 363 cmd->mask = cpu_to_le32(mask); 364 } 365 366 /* send the command */ 367 return pcan_usb_fd_send_cmd(dev, cmd); 368} 369 370/* set/unset options 371 * 372 * onoff set(1)/unset(0) options 373 * mask each bit defines a kind of options to set/unset 374 */ 375static int pcan_usb_fd_set_options(struct peak_usb_device *dev, 376 bool onoff, u16 ucan_mask, u16 usb_mask) 377{ 378 struct pcan_ufd_options *cmd = pcan_usb_fd_cmd_buffer(dev); 379 380 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 381 (onoff) ? PUCAN_CMD_SET_EN_OPTION : 382 PUCAN_CMD_CLR_DIS_OPTION); 383 384 cmd->ucan_mask = cpu_to_le16(ucan_mask); 385 cmd->usb_mask = cpu_to_le16(usb_mask); 386 387 /* send the command */ 388 return pcan_usb_fd_send_cmd(dev, ++cmd); 389} 390 391/* setup LED control */ 392static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode) 393{ 394 struct pcan_ufd_led *cmd = pcan_usb_fd_cmd_buffer(dev); 395 396 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 397 PCAN_UFD_CMD_LED_SET); 398 cmd->mode = led_mode; 399 400 /* send the command */ 401 return pcan_usb_fd_send_cmd(dev, ++cmd); 402} 403 404/* set CAN clock domain */ 405static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev, 406 u8 clk_mode) 407{ 408 struct pcan_ufd_clock *cmd = pcan_usb_fd_cmd_buffer(dev); 409 410 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 411 PCAN_UFD_CMD_CLK_SET); 412 cmd->mode = clk_mode; 413 414 /* send the command */ 415 return pcan_usb_fd_send_cmd(dev, ++cmd); 416} 417 418/* set bittiming for CAN and CAN-FD header */ 419static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev, 420 struct can_bittiming *bt) 421{ 422 struct pucan_timing_slow *cmd = pcan_usb_fd_cmd_buffer(dev); 423 424 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 425 PUCAN_CMD_TIMING_SLOW); 426 cmd->sjw_t = PUCAN_TSLOW_SJW_T(bt->sjw - 1, 427 dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES); 428 429 cmd->tseg2 = PUCAN_TSLOW_TSEG2(bt->phase_seg2 - 1); 430 cmd->tseg1 = PUCAN_TSLOW_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); 431 cmd->brp = cpu_to_le16(PUCAN_TSLOW_BRP(bt->brp - 1)); 432 433 cmd->ewl = 96; /* default */ 434 435 /* send the command */ 436 return pcan_usb_fd_send_cmd(dev, ++cmd); 437} 438 439/* set CAN-FD bittiming for data */ 440static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev, 441 struct can_bittiming *bt) 442{ 443 struct pucan_timing_fast *cmd = pcan_usb_fd_cmd_buffer(dev); 444 445 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 446 PUCAN_CMD_TIMING_FAST); 447 cmd->sjw = PUCAN_TFAST_SJW(bt->sjw - 1); 448 cmd->tseg2 = PUCAN_TFAST_TSEG2(bt->phase_seg2 - 1); 449 cmd->tseg1 = PUCAN_TFAST_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); 450 cmd->brp = cpu_to_le16(PUCAN_TFAST_BRP(bt->brp - 1)); 451 452 /* send the command */ 453 return pcan_usb_fd_send_cmd(dev, ++cmd); 454} 455 456/* read user CAN channel id from device */ 457static int pcan_usb_fd_get_can_channel_id(struct peak_usb_device *dev, 458 u32 *can_ch_id) 459{ 460 int err; 461 struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev); 462 463 err = pcan_usb_fd_read_fwinfo(dev, &usb_if->fw_info); 464 if (err) 465 return err; 466 467 *can_ch_id = le32_to_cpu(usb_if->fw_info.dev_id[dev->ctrl_idx]); 468 return err; 469} 470 471/* set a new CAN channel id in the flash memory of the device */ 472static int pcan_usb_fd_set_can_channel_id(struct peak_usb_device *dev, u32 can_ch_id) 473{ 474 struct pcan_ufd_device_id *cmd = pcan_usb_fd_cmd_buffer(dev); 475 476 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx, 477 PCAN_UFD_CMD_DEVID_SET); 478 cmd->device_id = cpu_to_le32(can_ch_id); 479 480 /* send the command */ 481 return pcan_usb_fd_send_cmd(dev, ++cmd); 482} 483 484/* handle restart but in asynchronously way 485 * (uses PCAN-USB Pro code to complete asynchronous request) 486 */ 487static int pcan_usb_fd_restart_async(struct peak_usb_device *dev, 488 struct urb *urb, u8 *buf) 489{ 490 struct pcan_usb_fd_device *pdev = 491 container_of(dev, struct pcan_usb_fd_device, dev); 492 struct pcan_ufd_fw_info *fw_info = &pdev->usb_if->fw_info; 493 u8 *pc = buf; 494 495 /* build the entire cmds list in the provided buffer, to go back into 496 * operational mode. 497 */ 498 pc += pcan_usb_fd_build_restart_cmd(dev, pc); 499 500 /* add EOC */ 501 memset(pc, 0xff, sizeof(struct pucan_command)); 502 pc += sizeof(struct pucan_command); 503 504 /* complete the URB */ 505 usb_fill_bulk_urb(urb, dev->udev, 506 usb_sndbulkpipe(dev->udev, fw_info->cmd_out_ep), 507 buf, pc - buf, 508 pcan_usb_pro_restart_complete, dev); 509 510 /* and submit it. */ 511 return usb_submit_urb(urb, GFP_ATOMIC); 512} 513 514static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded) 515{ 516 struct pcan_usb_fd_device *pdev = 517 container_of(dev, struct pcan_usb_fd_device, dev); 518 519 pdev->cmd_buffer_addr[0] = 0; 520 pdev->cmd_buffer_addr[1] = !!loaded; 521 522 return pcan_usb_pro_send_req(dev, 523 PCAN_USBPRO_REQ_FCT, 524 PCAN_USBPRO_FCT_DRVLD, 525 pdev->cmd_buffer_addr, 526 PCAN_USBPRO_FCT_DRVLD_REQ_LEN); 527} 528 529static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if, 530 struct pucan_msg *rx_msg) 531{ 532 struct pucan_rx_msg *rm = (struct pucan_rx_msg *)rx_msg; 533 struct peak_usb_device *dev; 534 struct net_device *netdev; 535 struct canfd_frame *cfd; 536 struct sk_buff *skb; 537 const u16 rx_msg_flags = le16_to_cpu(rm->flags); 538 539 if (pucan_msg_get_channel(rm) >= ARRAY_SIZE(usb_if->dev)) 540 return -ENOMEM; 541 542 dev = usb_if->dev[pucan_msg_get_channel(rm)]; 543 netdev = dev->netdev; 544 545 if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN) { 546 /* CANFD frame case */ 547 skb = alloc_canfd_skb(netdev, &cfd); 548 if (!skb) 549 return -ENOMEM; 550 551 if (rx_msg_flags & PUCAN_MSG_BITRATE_SWITCH) 552 cfd->flags |= CANFD_BRS; 553 554 if (rx_msg_flags & PUCAN_MSG_ERROR_STATE_IND) 555 cfd->flags |= CANFD_ESI; 556 557 cfd->len = can_fd_dlc2len(pucan_msg_get_dlc(rm)); 558 } else { 559 /* CAN 2.0 frame case */ 560 skb = alloc_can_skb(netdev, (struct can_frame **)&cfd); 561 if (!skb) 562 return -ENOMEM; 563 564 can_frame_set_cc_len((struct can_frame *)cfd, 565 pucan_msg_get_dlc(rm), 566 dev->can.ctrlmode); 567 } 568 569 cfd->can_id = le32_to_cpu(rm->can_id); 570 571 if (rx_msg_flags & PUCAN_MSG_EXT_ID) 572 cfd->can_id |= CAN_EFF_FLAG; 573 574 if (rx_msg_flags & PUCAN_MSG_RTR) { 575 cfd->can_id |= CAN_RTR_FLAG; 576 } else { 577 memcpy(cfd->data, rm->d, cfd->len); 578 netdev->stats.rx_bytes += cfd->len; 579 } 580 netdev->stats.rx_packets++; 581 582 peak_usb_netif_rx_64(skb, le32_to_cpu(rm->ts_low), 583 le32_to_cpu(rm->ts_high)); 584 585 return 0; 586} 587 588/* handle uCAN status message */ 589static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, 590 struct pucan_msg *rx_msg) 591{ 592 struct pucan_status_msg *sm = (struct pucan_status_msg *)rx_msg; 593 struct pcan_usb_fd_device *pdev; 594 enum can_state new_state = CAN_STATE_ERROR_ACTIVE; 595 enum can_state rx_state, tx_state; 596 struct peak_usb_device *dev; 597 struct net_device *netdev; 598 struct can_frame *cf; 599 struct sk_buff *skb; 600 601 if (pucan_stmsg_get_channel(sm) >= ARRAY_SIZE(usb_if->dev)) 602 return -ENOMEM; 603 604 dev = usb_if->dev[pucan_stmsg_get_channel(sm)]; 605 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 606 netdev = dev->netdev; 607 608 /* nothing should be sent while in BUS_OFF state */ 609 if (dev->can.state == CAN_STATE_BUS_OFF) 610 return 0; 611 612 if (sm->channel_p_w_b & PUCAN_BUS_BUSOFF) { 613 new_state = CAN_STATE_BUS_OFF; 614 } else if (sm->channel_p_w_b & PUCAN_BUS_PASSIVE) { 615 new_state = CAN_STATE_ERROR_PASSIVE; 616 } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) { 617 new_state = CAN_STATE_ERROR_WARNING; 618 } else { 619 /* back to (or still in) ERROR_ACTIVE state */ 620 new_state = CAN_STATE_ERROR_ACTIVE; 621 pdev->bec.txerr = 0; 622 pdev->bec.rxerr = 0; 623 } 624 625 /* state hasn't changed */ 626 if (new_state == dev->can.state) 627 return 0; 628 629 /* handle bus state change */ 630 tx_state = (pdev->bec.txerr >= pdev->bec.rxerr) ? new_state : 0; 631 rx_state = (pdev->bec.txerr <= pdev->bec.rxerr) ? new_state : 0; 632 633 /* allocate an skb to store the error frame */ 634 skb = alloc_can_err_skb(netdev, &cf); 635 can_change_state(netdev, cf, tx_state, rx_state); 636 637 /* things must be done even in case of OOM */ 638 if (new_state == CAN_STATE_BUS_OFF) 639 can_bus_off(netdev); 640 641 if (!skb) 642 return -ENOMEM; 643 644 peak_usb_netif_rx_64(skb, le32_to_cpu(sm->ts_low), 645 le32_to_cpu(sm->ts_high)); 646 647 return 0; 648} 649 650/* handle uCAN error message */ 651static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if, 652 struct pucan_msg *rx_msg) 653{ 654 struct pucan_error_msg *er = (struct pucan_error_msg *)rx_msg; 655 struct pcan_usb_fd_device *pdev; 656 struct peak_usb_device *dev; 657 658 if (pucan_ermsg_get_channel(er) >= ARRAY_SIZE(usb_if->dev)) 659 return -EINVAL; 660 661 dev = usb_if->dev[pucan_ermsg_get_channel(er)]; 662 pdev = container_of(dev, struct pcan_usb_fd_device, dev); 663 664 /* keep a trace of tx and rx error counters for later use */ 665 pdev->bec.txerr = er->tx_err_cnt; 666 pdev->bec.rxerr = er->rx_err_cnt; 667 668 return 0; 669} 670 671/* handle uCAN overrun message */ 672static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if, 673 struct pucan_msg *rx_msg) 674{ 675 struct pcan_ufd_ovr_msg *ov = (struct pcan_ufd_ovr_msg *)rx_msg; 676 struct peak_usb_device *dev; 677 struct net_device *netdev; 678 struct can_frame *cf; 679 struct sk_buff *skb; 680 681 if (pufd_omsg_get_channel(ov) >= ARRAY_SIZE(usb_if->dev)) 682 return -EINVAL; 683 684 dev = usb_if->dev[pufd_omsg_get_channel(ov)]; 685 netdev = dev->netdev; 686 687 /* allocate an skb to store the error frame */ 688 skb = alloc_can_err_skb(netdev, &cf); 689 if (!skb) 690 return -ENOMEM; 691 692 cf->can_id |= CAN_ERR_CRTL; 693 cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW; 694 695 peak_usb_netif_rx_64(skb, le32_to_cpu(ov->ts_low), 696 le32_to_cpu(ov->ts_high)); 697 698 netdev->stats.rx_over_errors++; 699 netdev->stats.rx_errors++; 700 701 return 0; 702} 703 704/* handle USB calibration message */ 705static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if, 706 struct pucan_msg *rx_msg) 707{ 708 struct pcan_ufd_ts_msg *ts = (struct pcan_ufd_ts_msg *)rx_msg; 709 710 /* should wait until clock is stabilized */ 711 if (usb_if->cm_ignore_count > 0) 712 usb_if->cm_ignore_count--; 713 else 714 peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low)); 715} 716 717/* callback for bulk IN urb */ 718static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb) 719{ 720 struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev); 721 struct net_device *netdev = dev->netdev; 722 struct pucan_msg *rx_msg; 723 u8 *msg_ptr, *msg_end; 724 int err = 0; 725 726 /* loop reading all the records from the incoming message */ 727 msg_ptr = urb->transfer_buffer; 728 msg_end = urb->transfer_buffer + urb->actual_length; 729 for (; msg_ptr < msg_end;) { 730 u16 rx_msg_type, rx_msg_size; 731 732 rx_msg = (struct pucan_msg *)msg_ptr; 733 if (!rx_msg->size) { 734 /* null packet found: end of list */ 735 break; 736 } 737 738 rx_msg_size = le16_to_cpu(rx_msg->size); 739 rx_msg_type = le16_to_cpu(rx_msg->type); 740 741 /* check if the record goes out of current packet */ 742 if (msg_ptr + rx_msg_size > msg_end) { 743 netdev_err(netdev, 744 "got frag rec: should inc usb rx buf sze\n"); 745 err = -EBADMSG; 746 break; 747 } 748 749 switch (rx_msg_type) { 750 case PUCAN_MSG_CAN_RX: 751 err = pcan_usb_fd_decode_canmsg(usb_if, rx_msg); 752 if (err < 0) 753 goto fail; 754 break; 755 756 case PCAN_UFD_MSG_CALIBRATION: 757 pcan_usb_fd_decode_ts(usb_if, rx_msg); 758 break; 759 760 case PUCAN_MSG_ERROR: 761 err = pcan_usb_fd_decode_error(usb_if, rx_msg); 762 if (err < 0) 763 goto fail; 764 break; 765 766 case PUCAN_MSG_STATUS: 767 err = pcan_usb_fd_decode_status(usb_if, rx_msg); 768 if (err < 0) 769 goto fail; 770 break; 771 772 case PCAN_UFD_MSG_OVERRUN: 773 err = pcan_usb_fd_decode_overrun(usb_if, rx_msg); 774 if (err < 0) 775 goto fail; 776 break; 777 778 default: 779 netdev_err(netdev, 780 "unhandled msg type 0x%02x (%d): ignored\n", 781 rx_msg_type, rx_msg_type); 782 break; 783 } 784 785 msg_ptr += rx_msg_size; 786 } 787 788fail: 789 if (err) 790 pcan_dump_mem("received msg", 791 urb->transfer_buffer, urb->actual_length); 792 return err; 793} 794 795/* CAN/CANFD frames encoding callback */ 796static int pcan_usb_fd_encode_msg(struct peak_usb_device *dev, 797 struct sk_buff *skb, u8 *obuf, size_t *size) 798{ 799 struct pucan_tx_msg *tx_msg = (struct pucan_tx_msg *)obuf; 800 struct canfd_frame *cfd = (struct canfd_frame *)skb->data; 801 u16 tx_msg_size, tx_msg_flags; 802 u8 dlc; 803 804 if (cfd->len > CANFD_MAX_DLEN) 805 return -EINVAL; 806 807 tx_msg_size = ALIGN(sizeof(struct pucan_tx_msg) + cfd->len, 4); 808 tx_msg->size = cpu_to_le16(tx_msg_size); 809 tx_msg->type = cpu_to_le16(PUCAN_MSG_CAN_TX); 810 811 tx_msg_flags = 0; 812 if (cfd->can_id & CAN_EFF_FLAG) { 813 tx_msg_flags |= PUCAN_MSG_EXT_ID; 814 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_EFF_MASK); 815 } else { 816 tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_SFF_MASK); 817 } 818 819 if (can_is_canfd_skb(skb)) { 820 /* considering a CANFD frame */ 821 dlc = can_fd_len2dlc(cfd->len); 822 823 tx_msg_flags |= PUCAN_MSG_EXT_DATA_LEN; 824 825 if (cfd->flags & CANFD_BRS) 826 tx_msg_flags |= PUCAN_MSG_BITRATE_SWITCH; 827 828 if (cfd->flags & CANFD_ESI) 829 tx_msg_flags |= PUCAN_MSG_ERROR_STATE_IND; 830 } else { 831 /* CAND 2.0 frames */ 832 dlc = can_get_cc_dlc((struct can_frame *)cfd, 833 dev->can.ctrlmode); 834 835 if (cfd->can_id & CAN_RTR_FLAG) 836 tx_msg_flags |= PUCAN_MSG_RTR; 837 } 838 839 /* Single-Shot frame */ 840 if (dev->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT) 841 tx_msg_flags |= PUCAN_MSG_SINGLE_SHOT; 842 843 tx_msg->flags = cpu_to_le16(tx_msg_flags); 844 tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, dlc); 845 memcpy(tx_msg->d, cfd->data, cfd->len); 846 847 /* add null size message to tag the end (messages are 32-bits aligned) 848 */ 849 tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size); 850 851 tx_msg->size = 0; 852 853 /* set the whole size of the USB packet to send */ 854 *size = tx_msg_size + sizeof(u32); 855 856 return 0; 857} 858 859/* start the interface (last chance before set bus on) */ 860static int pcan_usb_fd_start(struct peak_usb_device *dev) 861{ 862 struct pcan_usb_fd_device *pdev = 863 container_of(dev, struct pcan_usb_fd_device, dev); 864 int err; 865 866 /* set filter mode: all acceptance */ 867 err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff); 868 if (err) 869 return err; 870 871 /* opening first device: */ 872 if (pdev->usb_if->dev_opened_count == 0) { 873 /* reset time_ref */ 874 peak_usb_init_time_ref(&pdev->usb_if->time_ref, 875 &pcan_usb_pro_fd); 876 877 /* enable USB calibration messages */ 878 err = pcan_usb_fd_set_options(dev, 1, 879 PUCAN_OPTION_ERROR, 880 PCAN_UFD_FLTEXT_CALIBRATION); 881 } 882 883 pdev->usb_if->dev_opened_count++; 884 885 /* reset cached error counters */ 886 pdev->bec.txerr = 0; 887 pdev->bec.rxerr = 0; 888 889 return err; 890} 891 892/* socket callback used to copy berr counters values received through USB */ 893static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev, 894 struct can_berr_counter *bec) 895{ 896 struct peak_usb_device *dev = netdev_priv(netdev); 897 struct pcan_usb_fd_device *pdev = 898 container_of(dev, struct pcan_usb_fd_device, dev); 899 900 *bec = pdev->bec; 901 902 /* must return 0 */ 903 return 0; 904} 905 906/* probe function for all PCAN-USB FD family usb interfaces */ 907static int pcan_usb_fd_probe(struct usb_interface *intf) 908{ 909 struct usb_host_interface *iface_desc = &intf->altsetting[0]; 910 911 /* CAN interface is always interface #0 */ 912 return iface_desc->desc.bInterfaceNumber; 913} 914 915/* stop interface (last chance before set bus off) */ 916static int pcan_usb_fd_stop(struct peak_usb_device *dev) 917{ 918 struct pcan_usb_fd_device *pdev = 919 container_of(dev, struct pcan_usb_fd_device, dev); 920 921 /* turn off special msgs for that interface if no other dev opened */ 922 if (pdev->usb_if->dev_opened_count == 1) 923 pcan_usb_fd_set_options(dev, 0, 924 PUCAN_OPTION_ERROR, 925 PCAN_UFD_FLTEXT_CALIBRATION); 926 pdev->usb_if->dev_opened_count--; 927 928 return 0; 929} 930 931/* called when probing, to initialize a device object */ 932static int pcan_usb_fd_init(struct peak_usb_device *dev) 933{ 934 struct pcan_usb_fd_device *pdev = 935 container_of(dev, struct pcan_usb_fd_device, dev); 936 struct pcan_ufd_fw_info *fw_info; 937 int i, err = -ENOMEM; 938 939 /* do this for 1st channel only */ 940 if (!dev->prev_siblings) { 941 /* allocate netdevices common structure attached to first one */ 942 pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL); 943 if (!pdev->usb_if) 944 goto err_out; 945 946 /* allocate command buffer once for all for the interface */ 947 pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE, 948 GFP_KERNEL); 949 if (!pdev->cmd_buffer_addr) 950 goto err_out_1; 951 952 /* number of ts msgs to ignore before taking one into account */ 953 pdev->usb_if->cm_ignore_count = 5; 954 955 fw_info = &pdev->usb_if->fw_info; 956 957 err = pcan_usb_fd_read_fwinfo(dev, fw_info); 958 if (err) { 959 dev_err(dev->netdev->dev.parent, 960 "unable to read %s firmware info (err %d)\n", 961 dev->adapter->name, err); 962 goto err_out_2; 963 } 964 965 /* explicit use of dev_xxx() instead of netdev_xxx() here: 966 * information displayed are related to the device itself, not 967 * to the canx (channel) device. 968 */ 969 dev_info(dev->netdev->dev.parent, 970 "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n", 971 dev->adapter->name, fw_info->hw_version, 972 fw_info->fw_version[0], 973 fw_info->fw_version[1], 974 fw_info->fw_version[2], 975 dev->adapter->ctrl_count); 976 977 /* check for ability to switch between ISO/non-ISO modes */ 978 if (fw_info->fw_version[0] >= 2) { 979 /* firmware >= 2.x supports ISO/non-ISO switching */ 980 dev->can.ctrlmode_supported |= CAN_CTRLMODE_FD_NON_ISO; 981 } else { 982 /* firmware < 2.x only supports fixed(!) non-ISO */ 983 dev->can.ctrlmode |= CAN_CTRLMODE_FD_NON_ISO; 984 } 985 986 /* if vendor rsp type is greater than or equal to 2, then it 987 * contains EP numbers to use for cmds pipes. If not, then 988 * default EP should be used. 989 */ 990 if (le16_to_cpu(fw_info->type) < PCAN_USBFD_TYPE_EXT) { 991 fw_info->cmd_out_ep = PCAN_USBPRO_EP_CMDOUT; 992 fw_info->cmd_in_ep = PCAN_USBPRO_EP_CMDIN; 993 } 994 995 /* tell the hardware the can driver is running */ 996 err = pcan_usb_fd_drv_loaded(dev, 1); 997 if (err) { 998 dev_err(dev->netdev->dev.parent, 999 "unable to tell %s driver is loaded (err %d)\n", 1000 dev->adapter->name, err); 1001 goto err_out_2; 1002 } 1003 } else { 1004 /* otherwise, simply copy previous sibling's values */ 1005 struct pcan_usb_fd_device *ppdev = 1006 container_of(dev->prev_siblings, 1007 struct pcan_usb_fd_device, dev); 1008 1009 pdev->usb_if = ppdev->usb_if; 1010 pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr; 1011 1012 /* do a copy of the ctrlmode[_supported] too */ 1013 dev->can.ctrlmode = ppdev->dev.can.ctrlmode; 1014 dev->can.ctrlmode_supported = ppdev->dev.can.ctrlmode_supported; 1015 1016 fw_info = &pdev->usb_if->fw_info; 1017 } 1018 1019 pdev->usb_if->dev[dev->ctrl_idx] = dev; 1020 dev->can_channel_id = 1021 le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]); 1022 1023 /* if vendor rsp type is greater than or equal to 2, then it contains EP 1024 * numbers to use for data pipes. If not, then statically defined EP are 1025 * used (see peak_usb_create_dev()). 1026 */ 1027 if (le16_to_cpu(fw_info->type) >= PCAN_USBFD_TYPE_EXT) { 1028 dev->ep_msg_in = fw_info->data_in_ep; 1029 dev->ep_msg_out = fw_info->data_out_ep[dev->ctrl_idx]; 1030 } 1031 1032 /* set clock domain */ 1033 for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++) 1034 if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i]) 1035 break; 1036 1037 if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) { 1038 dev_warn(dev->netdev->dev.parent, 1039 "incompatible clock frequencies\n"); 1040 err = -EINVAL; 1041 goto err_out_2; 1042 } 1043 1044 pcan_usb_fd_set_clock_domain(dev, i); 1045 1046 /* set LED in default state (end of init phase) */ 1047 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF); 1048 1049 return 0; 1050 1051err_out_2: 1052 kfree(pdev->cmd_buffer_addr); 1053err_out_1: 1054 kfree(pdev->usb_if); 1055err_out: 1056 return err; 1057} 1058 1059/* called when driver module is being unloaded */ 1060static void pcan_usb_fd_exit(struct peak_usb_device *dev) 1061{ 1062 struct pcan_usb_fd_device *pdev = 1063 container_of(dev, struct pcan_usb_fd_device, dev); 1064 1065 /* when rmmod called before unplug and if down, should reset things 1066 * before leaving 1067 */ 1068 if (dev->can.state != CAN_STATE_STOPPED) { 1069 /* set bus off on the corresponding channel */ 1070 pcan_usb_fd_set_bus(dev, 0); 1071 } 1072 1073 /* switch off corresponding CAN LEDs */ 1074 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF); 1075 1076 /* if channel #0 (only) */ 1077 if (dev->ctrl_idx == 0) { 1078 /* turn off calibration message if any device were opened */ 1079 if (pdev->usb_if->dev_opened_count > 0) 1080 pcan_usb_fd_set_options(dev, 0, 1081 PUCAN_OPTION_ERROR, 1082 PCAN_UFD_FLTEXT_CALIBRATION); 1083 1084 /* tell USB adapter that the driver is being unloaded */ 1085 pcan_usb_fd_drv_loaded(dev, 0); 1086 } 1087} 1088 1089/* called when the USB adapter is unplugged */ 1090static void pcan_usb_fd_free(struct peak_usb_device *dev) 1091{ 1092 /* last device: can free shared objects now */ 1093 if (!dev->prev_siblings && !dev->next_siblings) { 1094 struct pcan_usb_fd_device *pdev = 1095 container_of(dev, struct pcan_usb_fd_device, dev); 1096 1097 /* free commands buffer */ 1098 kfree(pdev->cmd_buffer_addr); 1099 1100 /* free usb interface object */ 1101 kfree(pdev->usb_if); 1102 } 1103} 1104 1105/* blink LED's */ 1106static int pcan_usb_fd_set_phys_id(struct net_device *netdev, 1107 enum ethtool_phys_id_state state) 1108{ 1109 struct peak_usb_device *dev = netdev_priv(netdev); 1110 int err = 0; 1111 1112 switch (state) { 1113 case ETHTOOL_ID_ACTIVE: 1114 err = pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_FAST); 1115 break; 1116 case ETHTOOL_ID_INACTIVE: 1117 err = pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF); 1118 break; 1119 default: 1120 break; 1121 } 1122 1123 return err; 1124} 1125 1126static const struct ethtool_ops pcan_usb_fd_ethtool_ops = { 1127 .set_phys_id = pcan_usb_fd_set_phys_id, 1128 .get_ts_info = pcan_get_ts_info, 1129 .get_eeprom_len = peak_usb_get_eeprom_len, 1130 .get_eeprom = peak_usb_get_eeprom, 1131 .set_eeprom = peak_usb_set_eeprom, 1132}; 1133 1134/* describes the PCAN-USB FD adapter */ 1135static const struct can_bittiming_const pcan_usb_fd_const = { 1136 .name = "pcan_usb_fd", 1137 .tseg1_min = 1, 1138 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1139 .tseg2_min = 1, 1140 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1141 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1142 .brp_min = 1, 1143 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1144 .brp_inc = 1, 1145}; 1146 1147static const struct can_bittiming_const pcan_usb_fd_data_const = { 1148 .name = "pcan_usb_fd", 1149 .tseg1_min = 1, 1150 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1151 .tseg2_min = 1, 1152 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1153 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1154 .brp_min = 1, 1155 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1156 .brp_inc = 1, 1157}; 1158 1159const struct peak_usb_adapter pcan_usb_fd = { 1160 .name = "PCAN-USB FD", 1161 .device_id = PCAN_USBFD_PRODUCT_ID, 1162 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1163 .ctrlmode_supported = CAN_CTRLMODE_FD | 1164 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1165 CAN_CTRLMODE_ONE_SHOT | CAN_CTRLMODE_CC_LEN8_DLC, 1166 .clock = { 1167 .freq = PCAN_UFD_CRYSTAL_HZ, 1168 }, 1169 .bittiming_const = &pcan_usb_fd_const, 1170 .data_bittiming_const = &pcan_usb_fd_data_const, 1171 1172 /* size of device private data */ 1173 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1174 1175 .ethtool_ops = &pcan_usb_fd_ethtool_ops, 1176 1177 /* timestamps usage */ 1178 .ts_used_bits = 32, 1179 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1180 .us_per_ts_shift = 0, 1181 1182 /* give here messages in/out endpoints */ 1183 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1184 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1185 1186 /* size of rx/tx usb buffers */ 1187 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1188 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1189 1190 /* device callbacks */ 1191 .intf_probe = pcan_usb_fd_probe, 1192 .dev_init = pcan_usb_fd_init, 1193 1194 .dev_exit = pcan_usb_fd_exit, 1195 .dev_free = pcan_usb_fd_free, 1196 .dev_set_bus = pcan_usb_fd_set_bus, 1197 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1198 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1199 .dev_get_can_channel_id = pcan_usb_fd_get_can_channel_id, 1200 .dev_set_can_channel_id = pcan_usb_fd_set_can_channel_id, 1201 .dev_decode_buf = pcan_usb_fd_decode_buf, 1202 .dev_start = pcan_usb_fd_start, 1203 .dev_stop = pcan_usb_fd_stop, 1204 .dev_restart_async = pcan_usb_fd_restart_async, 1205 .dev_encode_msg = pcan_usb_fd_encode_msg, 1206 1207 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1208}; 1209 1210/* describes the PCAN-CHIP USB */ 1211static const struct can_bittiming_const pcan_usb_chip_const = { 1212 .name = "pcan_chip_usb", 1213 .tseg1_min = 1, 1214 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1215 .tseg2_min = 1, 1216 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1217 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1218 .brp_min = 1, 1219 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1220 .brp_inc = 1, 1221}; 1222 1223static const struct can_bittiming_const pcan_usb_chip_data_const = { 1224 .name = "pcan_chip_usb", 1225 .tseg1_min = 1, 1226 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1227 .tseg2_min = 1, 1228 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1229 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1230 .brp_min = 1, 1231 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1232 .brp_inc = 1, 1233}; 1234 1235const struct peak_usb_adapter pcan_usb_chip = { 1236 .name = "PCAN-Chip USB", 1237 .device_id = PCAN_USBCHIP_PRODUCT_ID, 1238 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, 1239 .ctrlmode_supported = CAN_CTRLMODE_FD | 1240 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1241 CAN_CTRLMODE_ONE_SHOT | CAN_CTRLMODE_CC_LEN8_DLC, 1242 .clock = { 1243 .freq = PCAN_UFD_CRYSTAL_HZ, 1244 }, 1245 .bittiming_const = &pcan_usb_chip_const, 1246 .data_bittiming_const = &pcan_usb_chip_data_const, 1247 1248 /* size of device private data */ 1249 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1250 1251 .ethtool_ops = &pcan_usb_fd_ethtool_ops, 1252 1253 /* timestamps usage */ 1254 .ts_used_bits = 32, 1255 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1256 .us_per_ts_shift = 0, 1257 1258 /* give here messages in/out endpoints */ 1259 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1260 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, 1261 1262 /* size of rx/tx usb buffers */ 1263 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1264 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1265 1266 /* device callbacks */ 1267 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1268 .dev_init = pcan_usb_fd_init, 1269 1270 .dev_exit = pcan_usb_fd_exit, 1271 .dev_free = pcan_usb_fd_free, 1272 .dev_set_bus = pcan_usb_fd_set_bus, 1273 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1274 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1275 .dev_get_can_channel_id = pcan_usb_fd_get_can_channel_id, 1276 .dev_set_can_channel_id = pcan_usb_fd_set_can_channel_id, 1277 .dev_decode_buf = pcan_usb_fd_decode_buf, 1278 .dev_start = pcan_usb_fd_start, 1279 .dev_stop = pcan_usb_fd_stop, 1280 .dev_restart_async = pcan_usb_fd_restart_async, 1281 .dev_encode_msg = pcan_usb_fd_encode_msg, 1282 1283 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1284}; 1285 1286/* describes the PCAN-USB Pro FD adapter */ 1287static const struct can_bittiming_const pcan_usb_pro_fd_const = { 1288 .name = "pcan_usb_pro_fd", 1289 .tseg1_min = 1, 1290 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1291 .tseg2_min = 1, 1292 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1293 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1294 .brp_min = 1, 1295 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1296 .brp_inc = 1, 1297}; 1298 1299static const struct can_bittiming_const pcan_usb_pro_fd_data_const = { 1300 .name = "pcan_usb_pro_fd", 1301 .tseg1_min = 1, 1302 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1303 .tseg2_min = 1, 1304 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1305 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1306 .brp_min = 1, 1307 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1308 .brp_inc = 1, 1309}; 1310 1311const struct peak_usb_adapter pcan_usb_pro_fd = { 1312 .name = "PCAN-USB Pro FD", 1313 .device_id = PCAN_USBPROFD_PRODUCT_ID, 1314 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1315 .ctrlmode_supported = CAN_CTRLMODE_FD | 1316 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1317 CAN_CTRLMODE_ONE_SHOT | CAN_CTRLMODE_CC_LEN8_DLC, 1318 .clock = { 1319 .freq = PCAN_UFD_CRYSTAL_HZ, 1320 }, 1321 .bittiming_const = &pcan_usb_pro_fd_const, 1322 .data_bittiming_const = &pcan_usb_pro_fd_data_const, 1323 1324 /* size of device private data */ 1325 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1326 1327 .ethtool_ops = &pcan_usb_fd_ethtool_ops, 1328 1329 /* timestamps usage */ 1330 .ts_used_bits = 32, 1331 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1332 .us_per_ts_shift = 0, 1333 1334 /* give here messages in/out endpoints */ 1335 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1336 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1337 1338 /* size of rx/tx usb buffers */ 1339 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1340 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1341 1342 /* device callbacks */ 1343 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1344 .dev_init = pcan_usb_fd_init, 1345 1346 .dev_exit = pcan_usb_fd_exit, 1347 .dev_free = pcan_usb_fd_free, 1348 .dev_set_bus = pcan_usb_fd_set_bus, 1349 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1350 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1351 .dev_get_can_channel_id = pcan_usb_fd_get_can_channel_id, 1352 .dev_set_can_channel_id = pcan_usb_fd_set_can_channel_id, 1353 .dev_decode_buf = pcan_usb_fd_decode_buf, 1354 .dev_start = pcan_usb_fd_start, 1355 .dev_stop = pcan_usb_fd_stop, 1356 .dev_restart_async = pcan_usb_fd_restart_async, 1357 .dev_encode_msg = pcan_usb_fd_encode_msg, 1358 1359 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1360}; 1361 1362/* describes the PCAN-USB X6 adapter */ 1363static const struct can_bittiming_const pcan_usb_x6_const = { 1364 .name = "pcan_usb_x6", 1365 .tseg1_min = 1, 1366 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), 1367 .tseg2_min = 1, 1368 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), 1369 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), 1370 .brp_min = 1, 1371 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), 1372 .brp_inc = 1, 1373}; 1374 1375static const struct can_bittiming_const pcan_usb_x6_data_const = { 1376 .name = "pcan_usb_x6", 1377 .tseg1_min = 1, 1378 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), 1379 .tseg2_min = 1, 1380 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), 1381 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), 1382 .brp_min = 1, 1383 .brp_max = (1 << PUCAN_TFAST_BRP_BITS), 1384 .brp_inc = 1, 1385}; 1386 1387const struct peak_usb_adapter pcan_usb_x6 = { 1388 .name = "PCAN-USB X6", 1389 .device_id = PCAN_USBX6_PRODUCT_ID, 1390 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, 1391 .ctrlmode_supported = CAN_CTRLMODE_FD | 1392 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY | 1393 CAN_CTRLMODE_ONE_SHOT | CAN_CTRLMODE_CC_LEN8_DLC, 1394 .clock = { 1395 .freq = PCAN_UFD_CRYSTAL_HZ, 1396 }, 1397 .bittiming_const = &pcan_usb_x6_const, 1398 .data_bittiming_const = &pcan_usb_x6_data_const, 1399 1400 /* size of device private data */ 1401 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), 1402 1403 .ethtool_ops = &pcan_usb_fd_ethtool_ops, 1404 1405 /* timestamps usage */ 1406 .ts_used_bits = 32, 1407 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ 1408 .us_per_ts_shift = 0, 1409 1410 /* give here messages in/out endpoints */ 1411 .ep_msg_in = PCAN_USBPRO_EP_MSGIN, 1412 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, 1413 1414 /* size of rx/tx usb buffers */ 1415 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, 1416 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, 1417 1418 /* device callbacks */ 1419 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ 1420 .dev_init = pcan_usb_fd_init, 1421 1422 .dev_exit = pcan_usb_fd_exit, 1423 .dev_free = pcan_usb_fd_free, 1424 .dev_set_bus = pcan_usb_fd_set_bus, 1425 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, 1426 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, 1427 .dev_get_can_channel_id = pcan_usb_fd_get_can_channel_id, 1428 .dev_set_can_channel_id = pcan_usb_fd_set_can_channel_id, 1429 .dev_decode_buf = pcan_usb_fd_decode_buf, 1430 .dev_start = pcan_usb_fd_start, 1431 .dev_stop = pcan_usb_fd_stop, 1432 .dev_restart_async = pcan_usb_fd_restart_async, 1433 .dev_encode_msg = pcan_usb_fd_encode_msg, 1434 1435 .do_get_berr_counter = pcan_usb_fd_get_berr_counter, 1436};
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