forked from ~ljy/RK356X_SDK_RELEASE
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2023-12-11 223293205a7265c8b02882461ba8996650048ade 
 kernel/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
....@@ -100,16 +100,6 @@
100100 #define USBCAN_ERROR_STATE_RX_ERROR	BIT(1)
101101 #define USBCAN_ERROR_STATE_BUSERROR	BIT(2)
102102 
103
-/* bittiming parameters */
104
-#define KVASER_USB_TSEG1_MIN		1
105
-#define KVASER_USB_TSEG1_MAX		16
106
-#define KVASER_USB_TSEG2_MIN		1
107
-#define KVASER_USB_TSEG2_MAX		8
108
-#define KVASER_USB_SJW_MAX		4
109
-#define KVASER_USB_BRP_MIN		1
110
-#define KVASER_USB_BRP_MAX		64
111
-#define KVASER_USB_BRP_INC		1
112
-
113103 /* ctrl modes */
114104 #define KVASER_CTRL_MODE_NORMAL		1
115105 #define KVASER_CTRL_MODE_SILENT		2
....@@ -319,6 +309,38 @@
319309 	} u;
320310 } __packed;
321311 
312
+#define CMD_SIZE_ANY 0xff
313
+#define kvaser_fsize(field) sizeof_field(struct kvaser_cmd, field)
314
+
315
+static const u8 kvaser_usb_leaf_cmd_sizes_leaf[] = {
316
+	[CMD_START_CHIP_REPLY]		= kvaser_fsize(u.simple),
317
+	[CMD_STOP_CHIP_REPLY]		= kvaser_fsize(u.simple),
318
+	[CMD_GET_CARD_INFO_REPLY]	= kvaser_fsize(u.cardinfo),
319
+	[CMD_TX_ACKNOWLEDGE]		= kvaser_fsize(u.tx_acknowledge_header),
320
+	[CMD_GET_SOFTWARE_INFO_REPLY]	= kvaser_fsize(u.leaf.softinfo),
321
+	[CMD_RX_STD_MESSAGE]		= kvaser_fsize(u.leaf.rx_can),
322
+	[CMD_RX_EXT_MESSAGE]		= kvaser_fsize(u.leaf.rx_can),
323
+	[CMD_LEAF_LOG_MESSAGE]		= kvaser_fsize(u.leaf.log_message),
324
+	[CMD_CHIP_STATE_EVENT]		= kvaser_fsize(u.leaf.chip_state_event),
325
+	[CMD_CAN_ERROR_EVENT]		= kvaser_fsize(u.leaf.error_event),
326
+	/* ignored events: */
327
+	[CMD_FLUSH_QUEUE_REPLY]		= CMD_SIZE_ANY,
328
+};
329
+
330
+static const u8 kvaser_usb_leaf_cmd_sizes_usbcan[] = {
331
+	[CMD_START_CHIP_REPLY]		= kvaser_fsize(u.simple),
332
+	[CMD_STOP_CHIP_REPLY]		= kvaser_fsize(u.simple),
333
+	[CMD_GET_CARD_INFO_REPLY]	= kvaser_fsize(u.cardinfo),
334
+	[CMD_TX_ACKNOWLEDGE]		= kvaser_fsize(u.tx_acknowledge_header),
335
+	[CMD_GET_SOFTWARE_INFO_REPLY]	= kvaser_fsize(u.usbcan.softinfo),
336
+	[CMD_RX_STD_MESSAGE]		= kvaser_fsize(u.usbcan.rx_can),
337
+	[CMD_RX_EXT_MESSAGE]		= kvaser_fsize(u.usbcan.rx_can),
338
+	[CMD_CHIP_STATE_EVENT]		= kvaser_fsize(u.usbcan.chip_state_event),
339
+	[CMD_CAN_ERROR_EVENT]		= kvaser_fsize(u.usbcan.error_event),
340
+	/* ignored events: */
341
+	[CMD_USBCAN_CLOCK_OVERFLOW_EVENT] = CMD_SIZE_ANY,
342
+};
343
+
322344 /* Summary of a kvaser error event, for a unified Leaf/Usbcan error
323345  * handling. Some discrepancies between the two families exist:
324346  *
....@@ -342,49 +364,106 @@
342364 	};
343365 };
344366 
345
-static const struct can_bittiming_const kvaser_usb_leaf_bittiming_const = {
346
-	.name = "kvaser_usb",
347
-	.tseg1_min = KVASER_USB_TSEG1_MIN,
348
-	.tseg1_max = KVASER_USB_TSEG1_MAX,
349
-	.tseg2_min = KVASER_USB_TSEG2_MIN,
350
-	.tseg2_max = KVASER_USB_TSEG2_MAX,
351
-	.sjw_max = KVASER_USB_SJW_MAX,
352
-	.brp_min = KVASER_USB_BRP_MIN,
353
-	.brp_max = KVASER_USB_BRP_MAX,
354
-	.brp_inc = KVASER_USB_BRP_INC,
367
+static const struct can_bittiming_const kvaser_usb_leaf_m16c_bittiming_const = {
368
+	.name = "kvaser_usb_ucii",
369
+	.tseg1_min = 4,
370
+	.tseg1_max = 16,
371
+	.tseg2_min = 2,
372
+	.tseg2_max = 8,
373
+	.sjw_max = 4,
374
+	.brp_min = 1,
375
+	.brp_max = 16,
376
+	.brp_inc = 1,
355377 };
356378 
357
-static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg_8mhz = {
379
+static const struct can_bittiming_const kvaser_usb_leaf_m32c_bittiming_const = {
380
+	.name = "kvaser_usb_leaf",
381
+	.tseg1_min = 3,
382
+	.tseg1_max = 16,
383
+	.tseg2_min = 2,
384
+	.tseg2_max = 8,
385
+	.sjw_max = 4,
386
+	.brp_min = 2,
387
+	.brp_max = 128,
388
+	.brp_inc = 2,
389
+};
390
+
391
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_usbcan_dev_cfg = {
358392 	.clock = {
359393 		.freq = 8000000,
360394 	},
361395 	.timestamp_freq = 1,
362
-	.bittiming_const = &kvaser_usb_leaf_bittiming_const,
396
+	.bittiming_const = &kvaser_usb_leaf_m16c_bittiming_const,
363397 };
364398 
365
-static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg_16mhz = {
399
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_m32c_dev_cfg = {
366400 	.clock = {
367401 		.freq = 16000000,
368402 	},
369403 	.timestamp_freq = 1,
370
-	.bittiming_const = &kvaser_usb_leaf_bittiming_const,
404
+	.bittiming_const = &kvaser_usb_leaf_m32c_bittiming_const,
371405 };
372406 
373
-static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg_24mhz = {
407
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_imx_dev_cfg_16mhz = {
408
+	.clock = {
409
+		.freq = 16000000,
410
+	},
411
+	.timestamp_freq = 1,
412
+	.bittiming_const = &kvaser_usb_flexc_bittiming_const,
413
+};
414
+
415
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_imx_dev_cfg_24mhz = {
374416 	.clock = {
375417 		.freq = 24000000,
376418 	},
377419 	.timestamp_freq = 1,
378
-	.bittiming_const = &kvaser_usb_leaf_bittiming_const,
420
+	.bittiming_const = &kvaser_usb_flexc_bittiming_const,
379421 };
380422 
381
-static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_dev_cfg_32mhz = {
423
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_imx_dev_cfg_32mhz = {
382424 	.clock = {
383425 		.freq = 32000000,
384426 	},
385427 	.timestamp_freq = 1,
386
-	.bittiming_const = &kvaser_usb_leaf_bittiming_const,
428
+	.bittiming_const = &kvaser_usb_flexc_bittiming_const,
387429 };
430
+
431
+static int kvaser_usb_leaf_verify_size(const struct kvaser_usb *dev,
432
+				       const struct kvaser_cmd *cmd)
433
+{
434
+	/* buffer size >= cmd->len ensured by caller */
435
+	u8 min_size = 0;
436
+
437
+	switch (dev->driver_info->family) {
438
+	case KVASER_LEAF:
439
+		if (cmd->id < ARRAY_SIZE(kvaser_usb_leaf_cmd_sizes_leaf))
440
+			min_size = kvaser_usb_leaf_cmd_sizes_leaf[cmd->id];
441
+		break;
442
+	case KVASER_USBCAN:
443
+		if (cmd->id < ARRAY_SIZE(kvaser_usb_leaf_cmd_sizes_usbcan))
444
+			min_size = kvaser_usb_leaf_cmd_sizes_usbcan[cmd->id];
445
+		break;
446
+	}
447
+
448
+	if (min_size == CMD_SIZE_ANY)
449
+		return 0;
450
+
451
+	if (min_size) {
452
+		min_size += CMD_HEADER_LEN;
453
+		if (cmd->len >= min_size)
454
+			return 0;
455
+
456
+		dev_err_ratelimited(&dev->intf->dev,
457
+				    "Received command %u too short (size %u, needed %u)",
458
+				    cmd->id, cmd->len, min_size);
459
+		return -EIO;
460
+	}
461
+
462
+	dev_warn_ratelimited(&dev->intf->dev,
463
+			     "Unhandled command (%d, size %d)\n",
464
+			     cmd->id, cmd->len);
465
+	return -EINVAL;
466
+}
388467 
389468 static void *
390469 kvaser_usb_leaf_frame_to_cmd(const struct kvaser_usb_net_priv *priv,
....@@ -405,7 +484,7 @@
405484 				      sizeof(struct kvaser_cmd_tx_can);
406485 		cmd->u.tx_can.channel = priv->channel;
407486 
408
-		switch (dev->card_data.leaf.family) {
487
+		switch (dev->driver_info->family) {
409488 		case KVASER_LEAF:
410489 			cmd_tx_can_flags = &cmd->u.tx_can.leaf.flags;
411490 			break;
....@@ -493,6 +572,9 @@
493572 end:
494573 	kfree(buf);
495574 
575
+	if (err == 0)
576
+		err = kvaser_usb_leaf_verify_size(dev, cmd);
577
+
496578 	return err;
497579 }
498580 
....@@ -525,16 +607,23 @@
525607 	dev->fw_version = le32_to_cpu(softinfo->fw_version);
526608 	dev->max_tx_urbs = le16_to_cpu(softinfo->max_outstanding_tx);
527609 
528
-	switch (sw_options & KVASER_USB_LEAF_SWOPTION_FREQ_MASK) {
529
-	case KVASER_USB_LEAF_SWOPTION_FREQ_16_MHZ_CLK:
530
-		dev->cfg = &kvaser_usb_leaf_dev_cfg_16mhz;
531
-		break;
532
-	case KVASER_USB_LEAF_SWOPTION_FREQ_24_MHZ_CLK:
533
-		dev->cfg = &kvaser_usb_leaf_dev_cfg_24mhz;
534
-		break;
535
-	case KVASER_USB_LEAF_SWOPTION_FREQ_32_MHZ_CLK:
536
-		dev->cfg = &kvaser_usb_leaf_dev_cfg_32mhz;
537
-		break;
610
+	if (dev->driver_info->quirks & KVASER_USB_QUIRK_IGNORE_CLK_FREQ) {
611
+		/* Firmware expects bittiming parameters calculated for 16MHz
612
+		 * clock, regardless of the actual clock
613
+		 */
614
+		dev->cfg = &kvaser_usb_leaf_m32c_dev_cfg;
615
+	} else {
616
+		switch (sw_options & KVASER_USB_LEAF_SWOPTION_FREQ_MASK) {
617
+		case KVASER_USB_LEAF_SWOPTION_FREQ_16_MHZ_CLK:
618
+			dev->cfg = &kvaser_usb_leaf_imx_dev_cfg_16mhz;
619
+			break;
620
+		case KVASER_USB_LEAF_SWOPTION_FREQ_24_MHZ_CLK:
621
+			dev->cfg = &kvaser_usb_leaf_imx_dev_cfg_24mhz;
622
+			break;
623
+		case KVASER_USB_LEAF_SWOPTION_FREQ_32_MHZ_CLK:
624
+			dev->cfg = &kvaser_usb_leaf_imx_dev_cfg_32mhz;
625
+			break;
626
+		}
538627 	}
539628 }
540629 
....@@ -551,7 +640,7 @@
551640 	if (err)
552641 		return err;
553642 
554
-	switch (dev->card_data.leaf.family) {
643
+	switch (dev->driver_info->family) {
555644 	case KVASER_LEAF:
556645 		kvaser_usb_leaf_get_software_info_leaf(dev, &cmd.u.leaf.softinfo);
557646 		break;
....@@ -559,7 +648,7 @@
559648 		dev->fw_version = le32_to_cpu(cmd.u.usbcan.softinfo.fw_version);
560649 		dev->max_tx_urbs =
561650 			le16_to_cpu(cmd.u.usbcan.softinfo.max_outstanding_tx);
562
-		dev->cfg = &kvaser_usb_leaf_dev_cfg_8mhz;
651
+		dev->cfg = &kvaser_usb_leaf_usbcan_dev_cfg;
563652 		break;
564653 	}
565654 
....@@ -598,7 +687,7 @@
598687 
599688 	dev->nchannels = cmd.u.cardinfo.nchannels;
600689 	if (dev->nchannels > KVASER_USB_MAX_NET_DEVICES ||
601
-	    (dev->card_data.leaf.family == KVASER_USBCAN &&
690
+	    (dev->driver_info->family == KVASER_USBCAN &&
602691 	     dev->nchannels > MAX_USBCAN_NET_DEVICES))
603692 		return -EINVAL;
604693 
....@@ -734,7 +823,7 @@
734823 	    new_state < CAN_STATE_BUS_OFF)
735824 		priv->can.can_stats.restarts++;
736825 
737
-	switch (dev->card_data.leaf.family) {
826
+	switch (dev->driver_info->family) {
738827 	case KVASER_LEAF:
739828 		if (es->leaf.error_factor) {
740829 			priv->can.can_stats.bus_error++;
....@@ -813,7 +902,7 @@
813902 		}
814903 	}
815904 
816
-	switch (dev->card_data.leaf.family) {
905
+	switch (dev->driver_info->family) {
817906 	case KVASER_LEAF:
818907 		if (es->leaf.error_factor) {
819908 			cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
....@@ -840,8 +929,10 @@
840929 		break;
841930 	}
842931 
843
-	cf->data[6] = es->txerr;
844
-	cf->data[7] = es->rxerr;
932
+	if (new_state != CAN_STATE_BUS_OFF) {
933
+		cf->data[6] = es->txerr;
934
+		cf->data[7] = es->rxerr;
935
+	}
845936 
846937 	stats->rx_packets++;
847938 	stats->rx_bytes += cf->can_dlc;
....@@ -1005,7 +1096,7 @@
10051096 	stats = &priv->netdev->stats;
10061097 
10071098 	if ((cmd->u.rx_can_header.flag & MSG_FLAG_ERROR_FRAME) &&
1008
-	    (dev->card_data.leaf.family == KVASER_LEAF &&
1099
+	    (dev->driver_info->family == KVASER_LEAF &&
10091100 	     cmd->id == CMD_LEAF_LOG_MESSAGE)) {
10101101 		kvaser_usb_leaf_leaf_rx_error(dev, cmd);
10111102 		return;
....@@ -1021,7 +1112,7 @@
10211112 		return;
10221113 	}
10231114 
1024
-	switch (dev->card_data.leaf.family) {
1115
+	switch (dev->driver_info->family) {
10251116 	case KVASER_LEAF:
10261117 		rx_data = cmd->u.leaf.rx_can.data;
10271118 		break;
....@@ -1036,7 +1127,7 @@
10361127 		return;
10371128 	}
10381129 
1039
-	if (dev->card_data.leaf.family == KVASER_LEAF && cmd->id ==
1130
+	if (dev->driver_info->family == KVASER_LEAF && cmd->id ==
10401131 	    CMD_LEAF_LOG_MESSAGE) {
10411132 		cf->can_id = le32_to_cpu(cmd->u.leaf.log_message.id);
10421133 		if (cf->can_id & KVASER_EXTENDED_FRAME)
....@@ -1118,6 +1209,9 @@
11181209 static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
11191210 					   const struct kvaser_cmd *cmd)
11201211 {
1212
+	if (kvaser_usb_leaf_verify_size(dev, cmd) < 0)
1213
+		return;
1214
+
11211215 	switch (cmd->id) {
11221216 	case CMD_START_CHIP_REPLY:
11231217 		kvaser_usb_leaf_start_chip_reply(dev, cmd);
....@@ -1133,14 +1227,14 @@
11331227 		break;
11341228 
11351229 	case CMD_LEAF_LOG_MESSAGE:
1136
-		if (dev->card_data.leaf.family != KVASER_LEAF)
1230
+		if (dev->driver_info->family != KVASER_LEAF)
11371231 			goto warn;
11381232 		kvaser_usb_leaf_rx_can_msg(dev, cmd);
11391233 		break;
11401234 
11411235 	case CMD_CHIP_STATE_EVENT:
11421236 	case CMD_CAN_ERROR_EVENT:
1143
-		if (dev->card_data.leaf.family == KVASER_LEAF)
1237
+		if (dev->driver_info->family == KVASER_LEAF)
11441238 			kvaser_usb_leaf_leaf_rx_error(dev, cmd);
11451239 		else
11461240 			kvaser_usb_leaf_usbcan_rx_error(dev, cmd);
....@@ -1152,12 +1246,12 @@
11521246 
11531247 	/* Ignored commands */
11541248 	case CMD_USBCAN_CLOCK_OVERFLOW_EVENT:
1155
-		if (dev->card_data.leaf.family != KVASER_USBCAN)
1249
+		if (dev->driver_info->family != KVASER_USBCAN)
11561250 			goto warn;
11571251 		break;
11581252 
11591253 	case CMD_FLUSH_QUEUE_REPLY:
1160
-		if (dev->card_data.leaf.family != KVASER_LEAF)
1254
+		if (dev->driver_info->family != KVASER_LEAF)
11611255 			goto warn;
11621256 		break;
11631257 
....@@ -1230,7 +1324,7 @@
12301324 {
12311325 	int err;
12321326 
1233
-	init_completion(&priv->start_comp);
1327
+	reinit_completion(&priv->start_comp);
12341328 
12351329 	err = kvaser_usb_leaf_send_simple_cmd(priv->dev, CMD_START_CHIP,
12361330 					      priv->channel);
....@@ -1248,7 +1342,7 @@
12481342 {
12491343 	int err;
12501344 
1251
-	init_completion(&priv->stop_comp);
1345
+	reinit_completion(&priv->stop_comp);
12521346 
12531347 	err = kvaser_usb_leaf_send_simple_cmd(priv->dev, CMD_STOP_CHIP,
12541348 					      priv->channel);
....@@ -1336,9 +1430,13 @@
13361430 
13371431 	switch (mode) {
13381432 	case CAN_MODE_START:
1433
+		kvaser_usb_unlink_tx_urbs(priv);
1434
+
13391435 		err = kvaser_usb_leaf_simple_cmd_async(priv, CMD_START_CHIP);
13401436 		if (err)
13411437 			return err;
1438
+
1439
+		priv->can.state = CAN_STATE_ERROR_ACTIVE;
13421440 		break;
13431441 	default:
13441442 		return -EOPNOTSUPP;