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can: peak_usb: add forgotten supported devices
[mirror_ubuntu-focal-kernel.git] / drivers / net / can / usb / peak_usb / pcan_usb_fd.c
CommitLineData
8e8e69d6 1// SPDX-License-Identifier: GPL-2.0-only
0a25e1f4
SG		 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>
0a25e1f4
SG		 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>
c3df7c57 14#include <linux/can/dev/peak_canfd.h>
0a25e1f4
SG		 15
16#include "pcan_usb_core.h"
17#include "pcan_usb_pro.h"
0a25e1f4
SG		 18
19MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB FD adapter");
20MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB Pro FD adapter");
918a2354
SG		 21MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-Chip USB");
22MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB X6 adapter");
0a25e1f4
SG		 23
24#define PCAN_USBPROFD_CHANNEL_COUNT 2
25#define PCAN_USBFD_CHANNEL_COUNT 1
26
27/* PCAN-USB Pro FD adapter internal clock (Hz) */
28#define PCAN_UFD_CRYSTAL_HZ 80000000
29
30#define PCAN_UFD_CMD_BUFFER_SIZE 512
31#define PCAN_UFD_LOSPD_PKT_SIZE 64
32
33/* PCAN-USB Pro FD command timeout (ms.) */
34#define PCAN_UFD_CMD_TIMEOUT_MS 1000
35
36/* PCAN-USB Pro FD rx/tx buffers size */
37#define PCAN_UFD_RX_BUFFER_SIZE 2048
38#define PCAN_UFD_TX_BUFFER_SIZE 512
39
40/* read some versions info from the hw devcie */
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
53/* handle device specific info used by the netdevices */
54struct pcan_usb_fd_if {
55 struct peak_usb_device *dev[PCAN_USB_MAX_CHANNEL];
56 struct pcan_ufd_fw_info fw_info;
57 struct peak_time_ref time_ref;
58 int cm_ignore_count;
59 int dev_opened_count;
60};
61
62/* device information */
63struct pcan_usb_fd_device {
64 struct peak_usb_device dev;
65 struct can_berr_counter bec;
66 struct pcan_usb_fd_if *usb_if;
67 u8 *cmd_buffer_addr;
68};
69
70/* Extended USB commands (non uCAN commands) */
71
72/* Clock Modes command */
73#define PCAN_UFD_CMD_CLK_SET 0x80
74
75#define PCAN_UFD_CLK_80MHZ 0x0
76#define PCAN_UFD_CLK_60MHZ 0x1
77#define PCAN_UFD_CLK_40MHZ 0x2
78#define PCAN_UFD_CLK_30MHZ 0x3
79#define PCAN_UFD_CLK_24MHZ 0x4
80#define PCAN_UFD_CLK_20MHZ 0x5
81#define PCAN_UFD_CLK_DEF PCAN_UFD_CLK_80MHZ
82
83struct __packed pcan_ufd_clock {
84 __le16 opcode_channel;
85
86 u8 mode;
87 u8 unused[5];
88};
89
90/* LED control command */
91#define PCAN_UFD_CMD_LED_SET 0x86
92
93#define PCAN_UFD_LED_DEV 0x00
94#define PCAN_UFD_LED_FAST 0x01
95#define PCAN_UFD_LED_SLOW 0x02
96#define PCAN_UFD_LED_ON 0x03
97#define PCAN_UFD_LED_OFF 0x04
98#define PCAN_UFD_LED_DEF PCAN_UFD_LED_DEV
99
100struct __packed pcan_ufd_led {
101 __le16 opcode_channel;
102
103 u8 mode;
104 u8 unused[5];
105};
106
3ef5247e 107/* Extended usage of uCAN commands CMD_xxx_xx_OPTION for PCAN-USB Pro FD */
0a25e1f4
SG		 108#define PCAN_UFD_FLTEXT_CALIBRATION 0x8000
109
3ef5247e 110struct __packed pcan_ufd_options {
0a25e1f4
SG		 111 __le16 opcode_channel;
112
3ef5247e 113 __le16 ucan_mask;
0a25e1f4
SG		 114 u16 unused;
115 __le16 usb_mask;
116};
117
118/* Extended usage of uCAN messages for PCAN-USB Pro FD */
119#define PCAN_UFD_MSG_CALIBRATION 0x100
120
121struct __packed pcan_ufd_ts_msg {
122 __le16 size;
123 __le16 type;
124 __le32 ts_low;
125 __le32 ts_high;
126 __le16 usb_frame_index;
127 u16 unused;
128};
129
130#define PCAN_UFD_MSG_OVERRUN 0x101
131
132#define PCAN_UFD_OVMSG_CHANNEL(o) ((o)->channel & 0xf)
133
134struct __packed pcan_ufd_ovr_msg {
135 __le16 size;
136 __le16 type;
137 __le32 ts_low;
138 __le32 ts_high;
139 u8 channel;
140 u8 unused[3];
141};
142
143static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om)
144{
145 return om->channel & 0xf;
146}
147
148/* Clock mode frequency values */
149static const u32 pcan_usb_fd_clk_freq[6] = {
150 [PCAN_UFD_CLK_80MHZ] = 80000000,
151 [PCAN_UFD_CLK_60MHZ] = 60000000,
152 [PCAN_UFD_CLK_40MHZ] = 40000000,
153 [PCAN_UFD_CLK_30MHZ] = 30000000,
154 [PCAN_UFD_CLK_24MHZ] = 24000000,
155 [PCAN_UFD_CLK_20MHZ] = 20000000
156};
157
158/* return a device USB interface */
159static inline
160struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev)
161{
162 struct pcan_usb_fd_device *pdev =
163 container_of(dev, struct pcan_usb_fd_device, dev);
164 return pdev->usb_if;
165}
166
167/* return a device USB commands buffer */
168static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev)
169{
170 struct pcan_usb_fd_device *pdev =
171 container_of(dev, struct pcan_usb_fd_device, dev);
172 return pdev->cmd_buffer_addr;
173}
174
175/* send PCAN-USB Pro FD commands synchronously */
176static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail)
177{
178 void *cmd_head = pcan_usb_fd_cmd_buffer(dev);
79d5eedd 179 int err = 0;
0a25e1f4 180 u8 *packet_ptr;
d8a243af 181 int packet_len;
0a25e1f4
SG		 182 ptrdiff_t cmd_len;
183
184 /* usb device unregistered? */
185 if (!(dev->state & PCAN_USB_STATE_CONNECTED))
186 return 0;
187
188 /* if a packet is not filled completely by commands, the command list
189 * is terminated with an "end of collection" record.
190 */
191 cmd_len = cmd_tail - cmd_head;
192 if (cmd_len <= (PCAN_UFD_CMD_BUFFER_SIZE - sizeof(u64))) {
193 memset(cmd_tail, 0xff, sizeof(u64));
194 cmd_len += sizeof(u64);
195 }
196
197 packet_ptr = cmd_head;
d8a243af 198 packet_len = cmd_len;
0a25e1f4
SG		 199
200 /* firmware is not able to re-assemble 512 bytes buffer in full-speed */
d8a243af
SG		 201 if (unlikely(dev->udev->speed != USB_SPEED_HIGH))
202 packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE);
0a25e1f4 203
d8a243af 204 do {
0a25e1f4
SG		 205 err = usb_bulk_msg(dev->udev,
206 usb_sndbulkpipe(dev->udev,
207 PCAN_USBPRO_EP_CMDOUT),
208 packet_ptr, packet_len,
209 NULL, PCAN_UFD_CMD_TIMEOUT_MS);
210 if (err) {
211 netdev_err(dev->netdev,
212 "sending command failure: %d\n", err);
213 break;
214 }
215
216 packet_ptr += packet_len;
d8a243af
SG		 217 cmd_len -= packet_len;
218
219 if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE)
220 packet_len = cmd_len;
221
222 } while (packet_len > 0);
0a25e1f4
SG		 223
224 return err;
225}
226
227/* build the commands list in the given buffer, to enter operational mode */
228static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf)
229{
230 struct pucan_wr_err_cnt *prc;
231 struct pucan_command *cmd;
232 u8 *pc = buf;
233
234 /* 1st, reset error counters: */
235 prc = (struct pucan_wr_err_cnt *)pc;
81c5e13d 236 prc->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 237 PUCAN_CMD_WR_ERR_CNT);
238
239 /* select both counters */
240 prc->sel_mask = cpu_to_le16(PUCAN_WRERRCNT_TE|PUCAN_WRERRCNT_RE);
241
242 /* and reset their values */
243 prc->tx_counter = 0;
244 prc->rx_counter = 0;
245
246 /* moves the pointer forward */
247 pc += sizeof(struct pucan_wr_err_cnt);
248
0f251e45
SG		 249 /* add command to switch from ISO to non-ISO mode, if fw allows it */
250 if (dev->can.ctrlmode_supported & CAN_CTRLMODE_FD_NON_ISO) {
251 struct pucan_options *puo = (struct pucan_options *)pc;
252
253 puo->opcode_channel =
254 (dev->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO) ?
81c5e13d 255 pucan_cmd_opcode_channel(dev->ctrl_idx,
0f251e45 256 PUCAN_CMD_CLR_DIS_OPTION) :
81c5e13d
SG		 257 pucan_cmd_opcode_channel(dev->ctrl_idx,
258 PUCAN_CMD_SET_EN_OPTION);
0f251e45
SG		 259
260 puo->options = cpu_to_le16(PUCAN_OPTION_CANDFDISO);
261
262 /* to be sure that no other extended bits will be taken into
263 * account
264 */
265 puo->unused = 0;
266
267 /* moves the pointer forward */
268 pc += sizeof(struct pucan_options);
269 }
270
0a25e1f4
SG		 271 /* next, go back to operational mode */
272 cmd = (struct pucan_command *)pc;
81c5e13d 273 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 274 (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) ?
275 PUCAN_CMD_LISTEN_ONLY_MODE :
276 PUCAN_CMD_NORMAL_MODE);
277 pc += sizeof(struct pucan_command);
278
279 return pc - buf;
280}
281
282/* set CAN bus on/off */
283static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff)
284{
285 u8 *pc = pcan_usb_fd_cmd_buffer(dev);
286 int l;
287
288 if (onoff) {
289 /* build the cmds list to enter operational mode */
290 l = pcan_usb_fd_build_restart_cmd(dev, pc);
291 } else {
292 struct pucan_command *cmd = (struct pucan_command *)pc;
293
294 /* build cmd to go back to reset mode */
81c5e13d 295 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 296 PUCAN_CMD_RESET_MODE);
297 l = sizeof(struct pucan_command);
298 }
299
300 /* send the command */
301 return pcan_usb_fd_send_cmd(dev, pc + l);
302}
303
304/* set filtering masks:
305 *
306 * idx in range [0..63] selects a row #idx, all rows otherwise
307 * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s)
308 *
309 * Each bit of this 64 x 32 bits array defines a CANID value:
310 *
311 * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while
312 * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded.
313 */
314static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx,
315 u32 mask)
316{
317 struct pucan_filter_std *cmd = pcan_usb_fd_cmd_buffer(dev);
318 int i, n;
319
320 /* select all rows when idx is out of range [0..63] */
321 if ((idx < 0) || (idx >= (1 << PUCAN_FLTSTD_ROW_IDX_BITS))) {
322 n = 1 << PUCAN_FLTSTD_ROW_IDX_BITS;
323 idx = 0;
324
325 /* select the row (and only the row) otherwise */
326 } else {
327 n = idx + 1;
328 }
329
330 for (i = idx; i < n; i++, cmd++) {
81c5e13d 331 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 332 PUCAN_CMD_FILTER_STD);
333 cmd->idx = cpu_to_le16(i);
334 cmd->mask = cpu_to_le32(mask);
335 }
336
337 /* send the command */
338 return pcan_usb_fd_send_cmd(dev, cmd);
339}
340
3ef5247e 341/* set/unset options
0a25e1f4 342 *
3ef5247e
SG		 343 * onoff set(1)/unset(0) options
344 * mask each bit defines a kind of options to set/unset
0a25e1f4 345 */
3ef5247e
SG		 346static int pcan_usb_fd_set_options(struct peak_usb_device *dev,
347 bool onoff, u16 ucan_mask, u16 usb_mask)
0a25e1f4 348{
3ef5247e 349 struct pcan_ufd_options *cmd = pcan_usb_fd_cmd_buffer(dev);
0a25e1f4 350
81c5e13d 351 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
3ef5247e
SG		 352 (onoff) ? PUCAN_CMD_SET_EN_OPTION :
353 PUCAN_CMD_CLR_DIS_OPTION);
0a25e1f4 354
3ef5247e 355 cmd->ucan_mask = cpu_to_le16(ucan_mask);
0a25e1f4
SG		 356 cmd->usb_mask = cpu_to_le16(usb_mask);
357
358 /* send the command */
359 return pcan_usb_fd_send_cmd(dev, ++cmd);
360}
361
362/* setup LED control */
363static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode)
364{
365 struct pcan_ufd_led *cmd = pcan_usb_fd_cmd_buffer(dev);
366
81c5e13d 367 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 368 PCAN_UFD_CMD_LED_SET);
369 cmd->mode = led_mode;
370
371 /* send the command */
372 return pcan_usb_fd_send_cmd(dev, ++cmd);
373}
374
375/* set CAN clock domain */
376static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev,
377 u8 clk_mode)
378{
379 struct pcan_ufd_clock *cmd = pcan_usb_fd_cmd_buffer(dev);
380
81c5e13d 381 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 382 PCAN_UFD_CMD_CLK_SET);
383 cmd->mode = clk_mode;
384
385 /* send the command */
386 return pcan_usb_fd_send_cmd(dev, ++cmd);
387}
388
389/* set bittiming for CAN and CAN-FD header */
390static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev,
391 struct can_bittiming *bt)
392{
393 struct pucan_timing_slow *cmd = pcan_usb_fd_cmd_buffer(dev);
394
81c5e13d 395 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 396 PUCAN_CMD_TIMING_SLOW);
397 cmd->sjw_t = PUCAN_TSLOW_SJW_T(bt->sjw - 1,
398 dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES);
399
400 cmd->tseg2 = PUCAN_TSLOW_TSEG2(bt->phase_seg2 - 1);
401 cmd->tseg1 = PUCAN_TSLOW_TSEG1(bt->prop_seg + bt->phase_seg1 - 1);
402 cmd->brp = cpu_to_le16(PUCAN_TSLOW_BRP(bt->brp - 1));
403
404 cmd->ewl = 96; /* default */
405
406 /* send the command */
407 return pcan_usb_fd_send_cmd(dev, ++cmd);
408}
409
410/* set CAN-FD bittiming for data */
411static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev,
412 struct can_bittiming *bt)
413{
414 struct pucan_timing_fast *cmd = pcan_usb_fd_cmd_buffer(dev);
415
81c5e13d 416 cmd->opcode_channel = pucan_cmd_opcode_channel(dev->ctrl_idx,
0a25e1f4
SG		 417 PUCAN_CMD_TIMING_FAST);
418 cmd->sjw = PUCAN_TFAST_SJW(bt->sjw - 1);
419 cmd->tseg2 = PUCAN_TFAST_TSEG2(bt->phase_seg2 - 1);
420 cmd->tseg1 = PUCAN_TFAST_TSEG1(bt->prop_seg + bt->phase_seg1 - 1);
421 cmd->brp = cpu_to_le16(PUCAN_TFAST_BRP(bt->brp - 1));
422
423 /* send the command */
424 return pcan_usb_fd_send_cmd(dev, ++cmd);
425}
426
427/* handle restart but in asynchronously way
428 * (uses PCAN-USB Pro code to complete asynchronous request)
429 */
430static int pcan_usb_fd_restart_async(struct peak_usb_device *dev,
431 struct urb *urb, u8 *buf)
432{
433 u8 *pc = buf;
434
435 /* build the entire cmds list in the provided buffer, to go back into
436 * operational mode.
437 */
438 pc += pcan_usb_fd_build_restart_cmd(dev, pc);
439
440 /* add EOC */
441 memset(pc, 0xff, sizeof(struct pucan_command));
442 pc += sizeof(struct pucan_command);
443
444 /* complete the URB */
445 usb_fill_bulk_urb(urb, dev->udev,
446 usb_sndbulkpipe(dev->udev, PCAN_USBPRO_EP_CMDOUT),
447 buf, pc - buf,
448 pcan_usb_pro_restart_complete, dev);
449
450 /* and submit it. */
451 return usb_submit_urb(urb, GFP_ATOMIC);
452}
453
454static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded)
455{
456 struct pcan_usb_fd_device *pdev =
457 container_of(dev, struct pcan_usb_fd_device, dev);
458
459 pdev->cmd_buffer_addr[0] = 0;
460 pdev->cmd_buffer_addr[1] = !!loaded;
461
462 return pcan_usb_pro_send_req(dev,
463 PCAN_USBPRO_REQ_FCT,
464 PCAN_USBPRO_FCT_DRVLD,
465 pdev->cmd_buffer_addr,
466 PCAN_USBPRO_FCT_DRVLD_REQ_LEN);
467}
468
469static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if,
470 struct pucan_msg *rx_msg)
471{
472 struct pucan_rx_msg *rm = (struct pucan_rx_msg *)rx_msg;
cdc74789
DC		 473 struct peak_usb_device *dev;
474 struct net_device *netdev;
0a25e1f4
SG		 475 struct canfd_frame *cfd;
476 struct sk_buff *skb;
477 const u16 rx_msg_flags = le16_to_cpu(rm->flags);
478
cdc74789
DC		 479 if (pucan_msg_get_channel(rm) >= ARRAY_SIZE(usb_if->dev))
480 return -ENOMEM;
481
482 dev = usb_if->dev[pucan_msg_get_channel(rm)];
483 netdev = dev->netdev;
484
0a25e1f4
SG		 485 if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN) {
486 /* CANFD frame case */
487 skb = alloc_canfd_skb(netdev, &cfd);
488 if (!skb)
489 return -ENOMEM;
490
491 if (rx_msg_flags & PUCAN_MSG_BITRATE_SWITCH)
492 cfd->flags |= CANFD_BRS;
493
494 if (rx_msg_flags & PUCAN_MSG_ERROR_STATE_IND)
495 cfd->flags |= CANFD_ESI;
496
497 cfd->len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(rm)));
498 } else {
499 /* CAN 2.0 frame case */
500 skb = alloc_can_skb(netdev, (struct can_frame **)&cfd);
501 if (!skb)
502 return -ENOMEM;
503
504 cfd->len = get_can_dlc(pucan_msg_get_dlc(rm));
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
0a25e1f4
SG		 517 netdev->stats.rx_packets++;
518 netdev->stats.rx_bytes += cfd->len;
519
f8a3af6c
VM		 520 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(rm->ts_low));
521
0a25e1f4
SG		 522 return 0;
523}
524
525/* handle uCAN status message */
526static 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;
cdc74789 530 struct pcan_usb_fd_device *pdev;
0a25e1f4
SG		 531 enum can_state new_state = CAN_STATE_ERROR_ACTIVE;
532 enum can_state rx_state, tx_state;
cdc74789
DC		 533 struct peak_usb_device *dev;
534 struct net_device *netdev;
0a25e1f4
SG		 535 struct can_frame *cf;
536 struct sk_buff *skb;
537
cdc74789
DC		 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
0a25e1f4
SG		 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
0a25e1f4
SG		 583 netdev->stats.rx_packets++;
584 netdev->stats.rx_bytes += cf->can_dlc;
585
f8a3af6c
VM		 586 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(sm->ts_low));
587
0a25e1f4
SG		 588 return 0;
589}
590
591/* handle uCAN error message */
592static 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;
cdc74789
DC		 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);
0a25e1f4
SG		 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 */
613static 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;
cdc74789
DC		 617 struct peak_usb_device *dev;
618 struct net_device *netdev;
0a25e1f4
SG		 619 struct can_frame *cf;
620 struct sk_buff *skb;
621
cdc74789
DC		 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
0a25e1f4
SG		 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
8e36917d 636 peak_usb_netif_rx(skb, &usb_if->time_ref, le32_to_cpu(ov->ts_low));
0a25e1f4
SG		 637
638 netdev->stats.rx_over_errors++;
639 netdev->stats.rx_errors++;
640
641 return 0;
642}
643
644/* handle USB calibration message */
645static 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 */
658static 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
728fail:
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 */
736static 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 can_dlc;
743
cdc74789
DC		 744 if (cfd->len > CANFD_MAX_DLEN)
745 return -EINVAL;
746
0a25e1f4
SG		 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 can_dlc = can_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 can_dlc = cfd->len;
773
774 if (cfd->can_id & CAN_RTR_FLAG)
775 tx_msg_flags |= PUCAN_MSG_RTR;
776 }
777
778 tx_msg->flags = cpu_to_le16(tx_msg_flags);
779 tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, can_dlc);
780 memcpy(tx_msg->d, cfd->data, cfd->len);
781
782 /* add null size message to tag the end (messages are 32-bits aligned)
783 */
784 tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size);
785
786 tx_msg->size = 0;
787
788 /* set the whole size of the USB packet to send */
789 *size = tx_msg_size + sizeof(u32);
790
791 return 0;
792}
793
794/* start the interface (last chance before set bus on) */
795static int pcan_usb_fd_start(struct peak_usb_device *dev)
796{
797 struct pcan_usb_fd_device *pdev =
798 container_of(dev, struct pcan_usb_fd_device, dev);
799 int err;
800
801 /* set filter mode: all acceptance */
802 err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff);
803 if (err)
804 return err;
805
806 /* opening first device: */
807 if (pdev->usb_if->dev_opened_count == 0) {
808 /* reset time_ref */
809 peak_usb_init_time_ref(&pdev->usb_if->time_ref,
810 &pcan_usb_pro_fd);
811
812 /* enable USB calibration messages */
3ef5247e
SG		 813 err = pcan_usb_fd_set_options(dev, 1,
814 PUCAN_OPTION_ERROR,
815 PCAN_UFD_FLTEXT_CALIBRATION);
0a25e1f4
SG		 816 }
817
818 pdev->usb_if->dev_opened_count++;
819
820 /* reset cached error counters */
821 pdev->bec.txerr = 0;
822 pdev->bec.rxerr = 0;
823
824 return err;
825}
826
827/* socket callback used to copy berr counters values receieved through USB */
828static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev,
829 struct can_berr_counter *bec)
830{
831 struct peak_usb_device *dev = netdev_priv(netdev);
832 struct pcan_usb_fd_device *pdev =
833 container_of(dev, struct pcan_usb_fd_device, dev);
834
835 *bec = pdev->bec;
836
837 /* must return 0 */
838 return 0;
839}
840
841/* stop interface (last chance before set bus off) */
842static int pcan_usb_fd_stop(struct peak_usb_device *dev)
843{
844 struct pcan_usb_fd_device *pdev =
845 container_of(dev, struct pcan_usb_fd_device, dev);
846
847 /* turn off special msgs for that interface if no other dev opened */
848 if (pdev->usb_if->dev_opened_count == 1)
3ef5247e
SG		 849 pcan_usb_fd_set_options(dev, 0,
850 PUCAN_OPTION_ERROR,
851 PCAN_UFD_FLTEXT_CALIBRATION);
0a25e1f4
SG		 852 pdev->usb_if->dev_opened_count--;
853
854 return 0;
855}
856
857/* called when probing, to initialize a device object */
858static int pcan_usb_fd_init(struct peak_usb_device *dev)
859{
860 struct pcan_usb_fd_device *pdev =
861 container_of(dev, struct pcan_usb_fd_device, dev);
862 int i, err = -ENOMEM;
863
864 /* do this for 1st channel only */
865 if (!dev->prev_siblings) {
866 /* allocate netdevices common structure attached to first one */
867 pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL);
868 if (!pdev->usb_if)
869 goto err_out;
870
871 /* allocate command buffer once for all for the interface */
30a8beeb 872 pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE,
0a25e1f4
SG		 873 GFP_KERNEL);
874 if (!pdev->cmd_buffer_addr)
875 goto err_out_1;
876
877 /* number of ts msgs to ignore before taking one into account */
878 pdev->usb_if->cm_ignore_count = 5;
879
880 err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO,
881 PCAN_USBPRO_INFO_FW,
882 &pdev->usb_if->fw_info,
883 sizeof(pdev->usb_if->fw_info));
884 if (err) {
885 dev_err(dev->netdev->dev.parent,
886 "unable to read %s firmware info (err %d)\n",
887 dev->adapter->name, err);
888 goto err_out_2;
889 }
890
891 /* explicit use of dev_xxx() instead of netdev_xxx() here:
892 * information displayed are related to the device itself, not
893 * to the canx (channel) device.
894 */
895 dev_info(dev->netdev->dev.parent,
896 "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n",
897 dev->adapter->name, pdev->usb_if->fw_info.hw_version,
898 pdev->usb_if->fw_info.fw_version[0],
899 pdev->usb_if->fw_info.fw_version[1],
900 pdev->usb_if->fw_info.fw_version[2],
901 dev->adapter->ctrl_count);
902
0f251e45
SG		 903 /* check for ability to switch between ISO/non-ISO modes */
904 if (pdev->usb_if->fw_info.fw_version[0] >= 2) {
905 /* firmware >= 2.x supports ISO/non-ISO switching */
906 dev->can.ctrlmode_supported |= CAN_CTRLMODE_FD_NON_ISO;
907 } else {
908 /* firmware < 2.x only supports fixed(!) non-ISO */
909 dev->can.ctrlmode |= CAN_CTRLMODE_FD_NON_ISO;
910 }
0a25e1f4
SG		 911
912 /* tell the hardware the can driver is running */
913 err = pcan_usb_fd_drv_loaded(dev, 1);
914 if (err) {
915 dev_err(dev->netdev->dev.parent,
916 "unable to tell %s driver is loaded (err %d)\n",
917 dev->adapter->name, err);
918 goto err_out_2;
919 }
920 } else {
921 /* otherwise, simply copy previous sibling's values */
922 struct pcan_usb_fd_device *ppdev =
923 container_of(dev->prev_siblings,
924 struct pcan_usb_fd_device, dev);
925
926 pdev->usb_if = ppdev->usb_if;
927 pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr;
b0d4724b
SG		 928
929 /* do a copy of the ctrlmode[_supported] too */
930 dev->can.ctrlmode = ppdev->dev.can.ctrlmode;
931 dev->can.ctrlmode_supported = ppdev->dev.can.ctrlmode_supported;
0a25e1f4
SG		 932 }
933
934 pdev->usb_if->dev[dev->ctrl_idx] = dev;
935 dev->device_number =
936 le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]);
937
938 /* set clock domain */
939 for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++)
940 if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i])
941 break;
942
943 if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) {
944 dev_warn(dev->netdev->dev.parent,
945 "incompatible clock frequencies\n");
946 err = -EINVAL;
947 goto err_out_2;
948 }
949
950 pcan_usb_fd_set_clock_domain(dev, i);
951
952 /* set LED in default state (end of init phase) */
953 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF);
954
955 return 0;
956
957err_out_2:
958 kfree(pdev->cmd_buffer_addr);
959err_out_1:
960 kfree(pdev->usb_if);
961err_out:
962 return err;
963}
964
965/* called when driver module is being unloaded */
966static void pcan_usb_fd_exit(struct peak_usb_device *dev)
967{
968 struct pcan_usb_fd_device *pdev =
969 container_of(dev, struct pcan_usb_fd_device, dev);
970
971 /* when rmmod called before unplug and if down, should reset things
972 * before leaving
973 */
974 if (dev->can.state != CAN_STATE_STOPPED) {
975 /* set bus off on the corresponding channel */
976 pcan_usb_fd_set_bus(dev, 0);
977 }
978
979 /* switch off corresponding CAN LEDs */
980 pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF);
981
982 /* if channel #0 (only) */
983 if (dev->ctrl_idx == 0) {
984 /* turn off calibration message if any device were opened */
985 if (pdev->usb_if->dev_opened_count > 0)
3ef5247e
SG		 986 pcan_usb_fd_set_options(dev, 0,
987 PUCAN_OPTION_ERROR,
988 PCAN_UFD_FLTEXT_CALIBRATION);
0a25e1f4
SG		 989
990 /* tell USB adapter that the driver is being unloaded */
991 pcan_usb_fd_drv_loaded(dev, 0);
992 }
993}
994
995/* called when the USB adapter is unplugged */
996static void pcan_usb_fd_free(struct peak_usb_device *dev)
997{
998 /* last device: can free shared objects now */
999 if (!dev->prev_siblings && !dev->next_siblings) {
1000 struct pcan_usb_fd_device *pdev =
1001 container_of(dev, struct pcan_usb_fd_device, dev);
1002
1003 /* free commands buffer */
1004 kfree(pdev->cmd_buffer_addr);
1005
1006 /* free usb interface object */
1007 kfree(pdev->usb_if);
1008 }
1009}
1010
1011/* describes the PCAN-USB FD adapter */
06b23f7f
MKB		 1012static const struct can_bittiming_const pcan_usb_fd_const = {
1013 .name = "pcan_usb_fd",
1014 .tseg1_min = 1,
fe5b4064 1015 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS),
06b23f7f 1016 .tseg2_min = 1,
fe5b4064
SG		 1017 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS),
1018 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS),
06b23f7f 1019 .brp_min = 1,
fe5b4064 1020 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS),
06b23f7f
MKB		 1021 .brp_inc = 1,
1022};
1023
1024static const struct can_bittiming_const pcan_usb_fd_data_const = {
1025 .name = "pcan_usb_fd",
1026 .tseg1_min = 1,
fe5b4064 1027 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS),
06b23f7f 1028 .tseg2_min = 1,
fe5b4064
SG		 1029 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS),
1030 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS),
06b23f7f 1031 .brp_min = 1,
fe5b4064 1032 .brp_max = (1 << PUCAN_TFAST_BRP_BITS),
06b23f7f
MKB		 1033 .brp_inc = 1,
1034};
1035
0a25e1f4
SG		 1036const struct peak_usb_adapter pcan_usb_fd = {
1037 .name = "PCAN-USB FD",
1038 .device_id = PCAN_USBFD_PRODUCT_ID,
1039 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT,
1040 .ctrlmode_supported = CAN_CTRLMODE_FD |
1041 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
1042 .clock = {
1043 .freq = PCAN_UFD_CRYSTAL_HZ,
1044 },
06b23f7f
MKB		 1045 .bittiming_const = &pcan_usb_fd_const,
1046 .data_bittiming_const = &pcan_usb_fd_data_const,
0a25e1f4
SG		 1047
1048 /* size of device private data */
1049 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
1050
1051 /* timestamps usage */
1052 .ts_used_bits = 32,
1053 .ts_period = 1000000, /* calibration period in ts. */
1054 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
1055 .us_per_ts_shift = 0,
1056
1057 /* give here messages in/out endpoints */
1058 .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
1059 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0},
1060
1061 /* size of rx/tx usb buffers */
1062 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
ea8b65b5
SG		 1063 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
1064
1065 /* device callbacks */
1066 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
1067 .dev_init = pcan_usb_fd_init,
1068
1069 .dev_exit = pcan_usb_fd_exit,
1070 .dev_free = pcan_usb_fd_free,
1071 .dev_set_bus = pcan_usb_fd_set_bus,
1072 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
1073 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
1074 .dev_decode_buf = pcan_usb_fd_decode_buf,
1075 .dev_start = pcan_usb_fd_start,
1076 .dev_stop = pcan_usb_fd_stop,
1077 .dev_restart_async = pcan_usb_fd_restart_async,
1078 .dev_encode_msg = pcan_usb_fd_encode_msg,
1079
1080 .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
1081};
1082
1083/* describes the PCAN-CHIP USB */
1084static const struct can_bittiming_const pcan_usb_chip_const = {
1085 .name = "pcan_chip_usb",
1086 .tseg1_min = 1,
1087 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS),
1088 .tseg2_min = 1,
1089 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS),
1090 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS),
1091 .brp_min = 1,
1092 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS),
1093 .brp_inc = 1,
1094};
1095
1096static const struct can_bittiming_const pcan_usb_chip_data_const = {
1097 .name = "pcan_chip_usb",
1098 .tseg1_min = 1,
1099 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS),
1100 .tseg2_min = 1,
1101 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS),
1102 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS),
1103 .brp_min = 1,
1104 .brp_max = (1 << PUCAN_TFAST_BRP_BITS),
1105 .brp_inc = 1,
1106};
1107
1108const struct peak_usb_adapter pcan_usb_chip = {
1109 .name = "PCAN-Chip USB",
1110 .device_id = PCAN_USBCHIP_PRODUCT_ID,
1111 .ctrl_count = PCAN_USBFD_CHANNEL_COUNT,
1112 .ctrlmode_supported = CAN_CTRLMODE_FD |
1113 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
1114 .clock = {
1115 .freq = PCAN_UFD_CRYSTAL_HZ,
1116 },
1117 .bittiming_const = &pcan_usb_chip_const,
1118 .data_bittiming_const = &pcan_usb_chip_data_const,
1119
1120 /* size of device private data */
1121 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
1122
1123 /* timestamps usage */
1124 .ts_used_bits = 32,
1125 .ts_period = 1000000, /* calibration period in ts. */
1126 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
1127 .us_per_ts_shift = 0,
1128
1129 /* give here messages in/out endpoints */
1130 .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
1131 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0},
1132
1133 /* size of rx/tx usb buffers */
1134 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
0a25e1f4
SG		 1135 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
1136
1137 /* device callbacks */
1138 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
1139 .dev_init = pcan_usb_fd_init,
1140
1141 .dev_exit = pcan_usb_fd_exit,
1142 .dev_free = pcan_usb_fd_free,
1143 .dev_set_bus = pcan_usb_fd_set_bus,
1144 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
1145 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
1146 .dev_decode_buf = pcan_usb_fd_decode_buf,
1147 .dev_start = pcan_usb_fd_start,
1148 .dev_stop = pcan_usb_fd_stop,
1149 .dev_restart_async = pcan_usb_fd_restart_async,
1150 .dev_encode_msg = pcan_usb_fd_encode_msg,
1151
1152 .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
1153};
1154
1155/* describes the PCAN-USB Pro FD adapter */
06b23f7f
MKB		 1156static const struct can_bittiming_const pcan_usb_pro_fd_const = {
1157 .name = "pcan_usb_pro_fd",
1158 .tseg1_min = 1,
fe5b4064 1159 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS),
06b23f7f 1160 .tseg2_min = 1,
fe5b4064
SG		 1161 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS),
1162 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS),
06b23f7f 1163 .brp_min = 1,
fe5b4064 1164 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS),
06b23f7f
MKB		 1165 .brp_inc = 1,
1166};
1167
1168static const struct can_bittiming_const pcan_usb_pro_fd_data_const = {
1169 .name = "pcan_usb_pro_fd",
1170 .tseg1_min = 1,
fe5b4064 1171 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS),
06b23f7f 1172 .tseg2_min = 1,
fe5b4064
SG		 1173 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS),
1174 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS),
06b23f7f 1175 .brp_min = 1,
fe5b4064 1176 .brp_max = (1 << PUCAN_TFAST_BRP_BITS),
06b23f7f
MKB		 1177 .brp_inc = 1,
1178};
1179
0a25e1f4
SG		 1180const struct peak_usb_adapter pcan_usb_pro_fd = {
1181 .name = "PCAN-USB Pro FD",
1182 .device_id = PCAN_USBPROFD_PRODUCT_ID,
1183 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT,
1184 .ctrlmode_supported = CAN_CTRLMODE_FD |
1185 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
1186 .clock = {
1187 .freq = PCAN_UFD_CRYSTAL_HZ,
1188 },
06b23f7f
MKB		 1189 .bittiming_const = &pcan_usb_pro_fd_const,
1190 .data_bittiming_const = &pcan_usb_pro_fd_data_const,
0a25e1f4
SG		 1191
1192 /* size of device private data */
1193 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
1194
1195 /* timestamps usage */
f00b534d
SG		 1196 .ts_used_bits = 32,
1197 .ts_period = 1000000, /* calibration period in ts. */
1198 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
1199 .us_per_ts_shift = 0,
1200
1201 /* give here messages in/out endpoints */
1202 .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
1203 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1},
1204
1205 /* size of rx/tx usb buffers */
1206 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
1207 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
1208
1209 /* device callbacks */
1210 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
1211 .dev_init = pcan_usb_fd_init,
1212
1213 .dev_exit = pcan_usb_fd_exit,
1214 .dev_free = pcan_usb_fd_free,
1215 .dev_set_bus = pcan_usb_fd_set_bus,
1216 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
1217 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
1218 .dev_decode_buf = pcan_usb_fd_decode_buf,
1219 .dev_start = pcan_usb_fd_start,
1220 .dev_stop = pcan_usb_fd_stop,
1221 .dev_restart_async = pcan_usb_fd_restart_async,
1222 .dev_encode_msg = pcan_usb_fd_encode_msg,
1223
1224 .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
1225};
1226
1227/* describes the PCAN-USB X6 adapter */
1228static const struct can_bittiming_const pcan_usb_x6_const = {
1229 .name = "pcan_usb_x6",
1230 .tseg1_min = 1,
1231 .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS),
1232 .tseg2_min = 1,
1233 .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS),
1234 .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS),
1235 .brp_min = 1,
1236 .brp_max = (1 << PUCAN_TSLOW_BRP_BITS),
1237 .brp_inc = 1,
1238};
1239
1240static const struct can_bittiming_const pcan_usb_x6_data_const = {
1241 .name = "pcan_usb_x6",
1242 .tseg1_min = 1,
1243 .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS),
1244 .tseg2_min = 1,
1245 .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS),
1246 .sjw_max = (1 << PUCAN_TFAST_SJW_BITS),
1247 .brp_min = 1,
1248 .brp_max = (1 << PUCAN_TFAST_BRP_BITS),
1249 .brp_inc = 1,
1250};
1251
1252const struct peak_usb_adapter pcan_usb_x6 = {
1253 .name = "PCAN-USB X6",
1254 .device_id = PCAN_USBX6_PRODUCT_ID,
1255 .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT,
1256 .ctrlmode_supported = CAN_CTRLMODE_FD |
1257 CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY,
1258 .clock = {
1259 .freq = PCAN_UFD_CRYSTAL_HZ,
1260 },
1261 .bittiming_const = &pcan_usb_x6_const,
1262 .data_bittiming_const = &pcan_usb_x6_data_const,
1263
1264 /* size of device private data */
1265 .sizeof_dev_private = sizeof(struct pcan_usb_fd_device),
1266
1267 /* timestamps usage */
0a25e1f4
SG		 1268 .ts_used_bits = 32,
1269 .ts_period = 1000000, /* calibration period in ts. */
1270 .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */
1271 .us_per_ts_shift = 0,
1272
1273 /* give here messages in/out endpoints */
1274 .ep_msg_in = PCAN_USBPRO_EP_MSGIN,
1275 .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1},
1276
1277 /* size of rx/tx usb buffers */
1278 .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE,
1279 .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE,
1280
1281 /* device callbacks */
1282 .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */
1283 .dev_init = pcan_usb_fd_init,
1284
1285 .dev_exit = pcan_usb_fd_exit,
1286 .dev_free = pcan_usb_fd_free,
1287 .dev_set_bus = pcan_usb_fd_set_bus,
1288 .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow,
1289 .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast,
1290 .dev_decode_buf = pcan_usb_fd_decode_buf,
1291 .dev_start = pcan_usb_fd_start,
1292 .dev_stop = pcan_usb_fd_stop,
1293 .dev_restart_async = pcan_usb_fd_restart_async,
1294 .dev_encode_msg = pcan_usb_fd_encode_msg,
1295
1296 .do_get_berr_counter = pcan_usb_fd_get_berr_counter,
1297};
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