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