2 * Copyright (C) 2009 Thomas Koerper <thomas.koerper@esd.eu>, esd gmbh
3 * derived from kernel/2.6/drivers/net/can/sja1000/esd_pci.c,
4 * * Copyright (C) 2007 Wolfgang Grandegger <wg@grandegger.com>
5 * * Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
6 * * Copyright (C) 2009 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh
7 * and kernel/2.6/drivers/net/can/at91_can.c,
8 * * Copyright (C) 2007 by Hans J. Koch <hjk@linutronix.de>
9 * * Copyright (C) 2008 by Marc Kleine-Budde <kernel@pengutronix.de
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the version 2 of the GNU General Public License
13 * as published by the Free Software Foundation
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 #include <linux/interrupt.h>
26 #include <linux/netdevice.h>
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/if_arp.h>
30 #include <linux/skbuff.h>
31 #include <linux/types.h>
32 #include <linux/delay.h>
33 #include <linux/errno.h>
34 #include <linux/init.h>
36 #include <linux/byteorder/generic.h>
37 #include <linux/pci.h>
38 #include <linux/pci_ids.h>
39 #include <socketcan/can.h>
40 #include <socketcan/can/error.h>
41 #include <socketcan/can/dev.h>
43 #define DRV_NAME "esd_pci331"
45 MODULE_AUTHOR("Thomas Koerper <thomas.koerper@esd.eu>");
46 MODULE_LICENSE("GPL v2");
47 MODULE_DESCRIPTION("Socket-CAN driver for the esd 331 CAN cards");
48 MODULE_DEVICE_TABLE(pci, esd331_pci_tbl);
49 MODULE_SUPPORTED_DEVICE("esd CAN-PCI/331, CAN-CPCI/331, CAN-PMC/331");
51 #ifndef PCI_DEVICE_ID_PLX_9030
52 # define PCI_DEVICE_ID_PLX_9030 0x9030
54 #ifndef PCI_DEVICE_ID_PLX_9050
55 # define PCI_DEVICE_ID_PLX_9050 0x9050
57 #ifndef PCI_VENDOR_ID_ESDGMBH
58 #define PCI_VENDOR_ID_ESDGMBH 0x12fe
61 #define ESD_PCI_SUB_SYS_ID_PCI331 0x0001
62 #define ESD_PCI_SUB_SYS_ID_PMC331 0x000C
64 /* Maximum number of interfaces supported per card */
65 #define ESD331_MAX_CAN 2
66 /* 331's fifo size. Don't change! */
67 #define ESD331_DPRSIZE 1024
68 /* Max. messages to handle per interrupt */
69 #define ESD331_MAX_INTERRUPT_WORK 8
70 #define ESD331_MAX_BOARD_MESSAGES 5
71 #define ESD331_RTR_FLAG 0x10
72 #define ESD331_ERR_OK 0x00
73 #define ESD331_ERR_WARN 0x40
74 #define ESD331_ERR_BUSOFF1 0x80
75 #define ESD331_ERR_BUSOFF2 0xc0
76 #define ESD331_CONF_OFFS_ICS 0x4c
77 #define ESD331_CONF_OFFS_MISC_CTRL 0x50
78 #define ESD331_OFFS_LINK_BASE 0x846
79 #define ESD331_OFFS_IRQ_ACK 0xc0100
80 #define ESD331_NETS_MASK 0x07
81 #define ESD331_EVENT_MASK 0x7f
82 #define ESD331_DLC_MASK 0x0f
83 #define ESD331_EFF_SUPP_FLAG 0x80
84 #define ESD331_IRQ_FLAG 0x00000004
85 #define ESD331_ENABLE_IRQ_FLAG 0x00000041
86 #define ESD331_STOP_OS 0x40000010
87 #define ESD331_RESTART_OS 0x40000028
89 #define ESD331_I20_BCAN 0
90 #define ESD331_I20_ENABLE 1
91 #define ESD331_I20_BAUD 4
92 #define ESD331_I20_TXDONE 5
93 #define ESD331_I20_TXTOUT 12
94 #define ESD331_I20_ERROR 13
95 #define ESD331_I20_BOARD 14
96 #define ESD331_I20_EX_BCAN 15
97 #define ESD331_I20_EX_TXDONE 16
98 #define ESD331_I20_EX_TXTOUT 17
99 #define ESD331_I20_BOARD2 20
100 #define ESD331_I20_FAST 21
102 static struct pci_device_id esd331_pci_tbl[] = {
103 {PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
104 PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PCI331},
105 {PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
106 PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PMC331},
110 struct esd331_can_msg {
119 } __attribute__((packed));
120 #define ESD331_CM_SSIZE (sizeof(struct esd331_can_msg) / sizeof(u16))
125 } __attribute__((packed));
133 struct esd331_can_msg rx_buff[ESD331_DPRSIZE];
138 struct esd331_can_msg tx_buff[ESD331_DPRSIZE];
139 } __attribute__((packed));
142 struct pci_dev *pci_dev;
143 struct net_device *dev[ESD331_MAX_CAN];
144 void __iomem *conf_addr;
145 void __iomem *base_addr1;
146 void __iomem *base_addr2;
147 spinlock_t irq_lock; /* locks access to card's fifo */
148 struct esd331_dpr *dpr;
154 struct can_priv can; /* must be the first member! */
155 struct esd331_pci *board;
159 struct esd331_baud_entry {
164 static struct esd331_baud_entry esd331_baud_table[] = {
184 static void esd331_reset(void *pci331_confspace, int wait_for_restart)
187 void __iomem *addr = pci331_confspace + ESD331_CONF_OFFS_MISC_CTRL;
190 data |= ESD331_STOP_OS;
195 data &= ~ESD331_RESTART_OS;
198 if (wait_for_restart)
199 msleep_interruptible(3500);
202 static struct esd331_dpr *esd331_init_pointer(void __iomem *pci331_space2)
205 struct esd331_idp *idp;
206 void __iomem *ptr = pci331_space2 + ESD331_OFFS_LINK_BASE;
209 data = (data << 8) + readb(ptr++);
210 data = (data << 8) + readb(ptr++);
211 data = (data << 8) + readb(ptr++);
213 idp = (struct esd331_idp *)(pci331_space2 + data);
214 data = idp->buffer[0];
215 data = (data << 8) + idp->buffer[1];
216 data = (data << 8) + idp->buffer[2];
217 data = (data << 8) + idp->buffer[3];
219 return (struct esd331_dpr *)(pci331_space2 + data);
222 static void esd331_enable_irq(void *pci331_confspace)
224 void __iomem *addr = pci331_confspace + ESD331_CONF_OFFS_ICS;
228 data |= ESD331_ENABLE_IRQ_FLAG;
232 static void esd331_disable_irq(void *pci331_confspace)
234 void __iomem *addr = pci331_confspace + ESD331_CONF_OFFS_ICS;
238 data &= ~ESD331_ENABLE_IRQ_FLAG;
242 static int esd331_write(struct esd331_can_msg *mesg, struct esd331_pci *board)
247 unsigned long irq_flags;
248 int err = -EAGAIN; /* = card's fifo full */
251 spin_lock_irqsave(&board->irq_lock, irq_flags);
253 out = be16_to_cpu(readw(&board->dpr->rx_ou));
254 in = be16_to_cpu(readw(&board->dpr->rx_in));
256 in_new = (in + 1) % ESD331_DPRSIZE;
263 ptr2 = (u16 *)&board->dpr->rx_buff[in];
264 for (i = 0; i < ESD331_CM_SSIZE; i++)
265 writew(*ptr1++, ptr2++);
267 in_new = cpu_to_be16(in_new);
269 writew(in_new, &board->dpr->rx_in);
274 spin_unlock_irqrestore(&board->irq_lock, irq_flags);
278 static int esd331_read(struct esd331_can_msg *mesg, struct esd331_pci *board)
282 unsigned long irq_flags;
285 spin_lock_irqsave(&board->irq_lock, irq_flags);
287 out = be16_to_cpu(readw(&board->dpr->tx_ou));
288 in = be16_to_cpu(readw(&board->dpr->tx_in));
296 ptr2 = (u16 *)&board->dpr->tx_buff[out];
297 for (ll = 0; ll < ESD331_CM_SSIZE; ll++)
298 *ptr1++ = readw(ptr2++);
301 out %= ESD331_DPRSIZE;
304 writew(cpu_to_be16(out), &board->dpr->tx_ou);
306 mesg->id = be16_to_cpu(mesg->id);
307 mesg->len = be16_to_cpu(mesg->len);
308 mesg->x1 = be16_to_cpu(mesg->x1);
309 mesg->x2 = be16_to_cpu(mesg->x2);
310 mesg->x3 = be16_to_cpu(mesg->x3);
315 spin_unlock_irqrestore(&board->irq_lock, irq_flags);
319 static int esd331_send(struct esd331_pci *board, u8 pci331net, unsigned long id,
320 int eff, int rtr, u16 dlc, u8 *data)
322 struct esd331_can_msg msg;
325 memset(&msg, 0, sizeof(msg));
328 msg.cmmd = ESD331_I20_EX_BCAN;
329 msg.id = cpu_to_be16((id >> 16) & 0x1fff);
330 msg.x2 = cpu_to_be16(id);
332 msg.cmmd = ESD331_I20_BCAN;
333 msg.id = cpu_to_be16(id);
336 msg.len = cpu_to_be16(rtr ? dlc | ESD331_RTR_FLAG : dlc);
338 i = (dlc < 8) ? dlc : 8;
340 msg.data[i] = data[i];
342 return esd331_write(&msg, board);
345 static int esd331_write_allid(u8 net, struct esd331_pci *board)
347 struct esd331_can_msg mesg;
350 memset(&mesg, 0, sizeof(mesg));
352 mesg.cmmd = ESD331_I20_ENABLE;
355 for (id = 0; id < 2048; id++) {
358 mesg.id = cpu_to_be16(id);
360 while (esd331_write(&mesg, board) && (retryCount--))
370 static int esd331_write_fast(struct esd331_pci *board)
372 struct esd331_can_msg mesg;
374 memset(&mesg, 0, sizeof(mesg));
375 mesg.cmmd = ESD331_I20_FAST;
377 return esd331_write(&mesg, board);
380 static int esd331_write_baud(u8 pci331net, int index, struct esd331_pci *board)
382 struct esd331_can_msg mesg;
384 memset(&mesg, 0, sizeof(mesg));
385 mesg.cmmd = ESD331_I20_BAUD;
386 mesg.net = pci331net;
387 mesg.data[0] = (u8)(index >> 8);
388 mesg.data[1] = (u8)index;
390 return esd331_write(&mesg, board);
393 static int esd331_read_features(struct esd331_pci *board)
395 struct esd331_can_msg msg;
396 int max_msg = ESD331_MAX_BOARD_MESSAGES;
398 board->net_count = 0;
401 while ((esd331_read(&msg, board) == 0) && (max_msg--)) {
402 if (msg.cmmd == ESD331_I20_BOARD) {
403 u8 magic = (msg.x1 >> 8);
406 u8 features = (u8)msg.x1;
407 u8 nets = (features & ESD331_NETS_MASK);
409 if (nets <= ESD331_MAX_CAN)
410 board->net_count = nets;
412 if (features & ESD331_EFF_SUPP_FLAG)
415 } else if (msg.cmmd == ESD331_I20_BOARD2) {
416 u8 features = msg.net;
418 if (features & ESD331_EFF_SUPP_FLAG)
421 if (board->net_count == 0) {
422 u8 nets = (features & ESD331_NETS_MASK);
424 if (nets <= ESD331_MAX_CAN)
425 board->net_count = nets;
430 return (board->net_count < 1) ? -EIO : 0;
433 static int esd331_create_err_frame(struct net_device *dev, canid_t idflags,
436 struct net_device_stats *stats;
437 struct can_frame *cf;
440 skb = dev_alloc_skb(sizeof(*cf));
441 if (unlikely(skb == NULL))
444 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
445 stats = can_get_stats(dev);
451 skb->protocol = htons(ETH_P_CAN);
452 cf = (struct can_frame *)skb_put(skb, sizeof(*cf));
453 memset(cf, 0, sizeof(*cf));
455 cf->can_id = CAN_ERR_FLAG | idflags;
456 cf->can_dlc = CAN_ERR_DLC;
461 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,31)
462 dev->last_rx = jiffies;
465 stats->rx_bytes += cf->can_dlc;
470 static void esd331_irq_rx(struct net_device *dev, struct esd331_can_msg *msg,
473 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
474 struct net_device_stats *stats = can_get_stats(dev);
476 struct net_device_stats *stats = &dev->stats;
478 struct can_frame *cfrm;
482 skb = netdev_alloc_skb(dev, sizeof(*cfrm));
483 if (unlikely(skb == NULL)) {
487 skb->protocol = htons(ETH_P_CAN);
489 cfrm = (struct can_frame *)skb_put(skb, sizeof(*cfrm));
490 memset(cfrm, 0, sizeof(*cfrm));
493 cfrm->can_id = (msg->id << 16);
494 cfrm->can_id |= (msg->x2);
496 cfrm->can_id = msg->id;
498 if (msg->len & ESD331_RTR_FLAG)
499 cfrm->can_id |= CAN_RTR_FLAG;
502 cfrm->can_id |= CAN_EFF_FLAG;
504 cfrm->can_dlc = msg->len & ESD331_DLC_MASK;
506 if (cfrm->can_dlc > 8)
509 for (i = 0; i < cfrm->can_dlc; ++i)
510 cfrm->data[i] = msg->data[i];
514 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,31)
515 dev->last_rx = jiffies;
518 stats->rx_bytes += cfrm->can_dlc;
521 static void esd331_handle_errmsg(struct net_device *dev,
522 struct esd331_can_msg *msg)
524 struct esd331_priv *priv = netdev_priv(dev);
526 if (msg->id & ESD331_EVENT_MASK)
529 switch (msg->data[1]) {
531 if (priv->can.state != CAN_STATE_STOPPED)
532 priv->can.state = CAN_STATE_ERROR_ACTIVE;
535 case ESD331_ERR_WARN:
536 if ((priv->can.state != CAN_STATE_ERROR_WARNING)
537 && (priv->can.state != CAN_STATE_STOPPED)) {
538 priv->can.can_stats.error_warning++;
539 priv->can.state = CAN_STATE_ERROR_WARNING;
541 /* might be RX warning, too... */
542 esd331_create_err_frame(dev, CAN_ERR_CRTL,
543 CAN_ERR_CRTL_TX_WARNING);
547 case ESD331_ERR_BUSOFF1:
548 case ESD331_ERR_BUSOFF2:
549 if ((priv->can.state != CAN_STATE_BUS_OFF)
550 && (priv->can.state != CAN_STATE_STOPPED)) {
551 priv->can.state = CAN_STATE_BUS_OFF;
552 esd331_create_err_frame(dev, CAN_ERR_BUSOFF, 0);
563 static void esd331_handle_messages(struct esd331_pci *board)
565 struct net_device *dev;
566 struct esd331_priv *priv;
567 struct net_device_stats *stats;
568 struct esd331_can_msg msg;
569 int msg_count = ESD331_MAX_INTERRUPT_WORK;
571 while ((esd331_read(&msg, board) == 0) && (msg_count--)) {
572 if (unlikely((msg.net >= ESD331_MAX_CAN)
573 || (board->dev[msg.net] == NULL)))
576 dev = board->dev[msg.net];
577 priv = netdev_priv(dev);
578 if (priv->can.state == CAN_STATE_STOPPED)
581 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
582 stats = can_get_stats(dev);
588 case ESD331_I20_BCAN:
589 case ESD331_I20_EX_BCAN:
590 esd331_irq_rx(dev, &msg,
591 (msg.cmmd == ESD331_I20_EX_BCAN));
594 case ESD331_I20_TXDONE:
595 case ESD331_I20_EX_TXDONE:
597 can_get_echo_skb(dev, 0);
598 netif_wake_queue(dev);
601 case ESD331_I20_TXTOUT:
602 case ESD331_I20_EX_TXTOUT:
605 can_free_echo_skb(dev, 0);
606 netif_wake_queue(dev);
609 case ESD331_I20_ERROR:
610 esd331_handle_errmsg(dev, &msg);
619 static int esd331_all_nets_stopped(struct esd331_pci *board)
623 for (i = 0; i < ESD331_MAX_CAN; i++) {
624 if (board->dev[i] == NULL) {
627 struct esd331_priv *priv = netdev_priv(board->dev[i]);
629 if (priv->can.state != CAN_STATE_STOPPED)
637 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
638 irqreturn_t esd331_interrupt(int irq, void *dev_id, struct pt_regs *regs)
640 irqreturn_t esd331_interrupt(int irq, void *dev_id)
643 struct esd331_pci *board = (struct esd331_pci *)dev_id;
644 void __iomem *ics = board->conf_addr + ESD331_CONF_OFFS_ICS;
646 if (!(readl(ics) & ESD331_IRQ_FLAG))
649 writew(0xffff, board->base_addr2 + ESD331_OFFS_IRQ_ACK);
650 esd331_handle_messages(board);
655 /* also enables interrupt when no other net on card is openened yet */
656 static int esd331_open(struct net_device *dev)
658 struct esd331_priv *priv = netdev_priv(dev);
661 err = open_candev(dev);
665 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
666 memset(&priv->can.net_stats, 0, sizeof(priv->can.net_stats));
669 if (esd331_all_nets_stopped(priv->board))
670 esd331_enable_irq(priv->board->conf_addr);
672 priv->can.state = CAN_STATE_ERROR_ACTIVE;
673 netif_start_queue(dev);
678 /* also disables interrupt when all other nets on card are closed already*/
679 static int esd331_close(struct net_device *dev)
681 struct esd331_priv *priv = netdev_priv(dev);
683 priv->can.state = CAN_STATE_STOPPED;
684 netif_stop_queue(dev);
687 if (esd331_all_nets_stopped(priv->board))
688 esd331_disable_irq(priv->board->conf_addr);
693 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,31)
694 static int esd331_start_xmit(struct sk_buff *skb, struct net_device *dev)
696 static netdev_tx_t esd331_start_xmit(struct sk_buff *skb,
697 struct net_device *dev)
700 struct esd331_priv *priv = netdev_priv(dev);
701 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
702 struct net_device_stats *stats = can_get_stats(dev);
704 struct net_device_stats *stats = &dev->stats;
706 struct can_frame *cf = (struct can_frame *)skb->data;
709 can_put_echo_skb(skb, dev, 0);
711 if ((cf->can_id & CAN_EFF_FLAG) && (priv->board->eff_supp == 0)) {
714 can_free_echo_skb(dev, 0);
719 err = esd331_send(priv->board, priv->boards_net,
720 cf->can_id & CAN_EFF_MASK,
721 cf->can_id & CAN_EFF_FLAG,
722 cf->can_id & CAN_RTR_FLAG,
723 cf->can_dlc, cf->data);
725 stats->tx_fifo_errors++;
728 can_free_echo_skb(dev, 0);
732 netif_stop_queue(dev);
733 stats->tx_bytes += cf->can_dlc;
734 dev->trans_start = jiffies;
739 static int esd331_set_bittiming(struct net_device *dev)
741 struct esd331_priv *priv = netdev_priv(dev);
744 for (i = 0; i < ARRAY_SIZE(esd331_baud_table); i++) {
745 if (priv->can.bittiming.bitrate == esd331_baud_table[i].rate) {
746 return esd331_write_baud(priv->boards_net,
747 esd331_baud_table[i].index, priv->board);
754 static int esd331_set_mode(struct net_device *dev, enum can_mode mode)
756 struct esd331_priv *priv = netdev_priv(dev);
760 priv->can.state = CAN_STATE_ERROR_ACTIVE;
761 if (netif_queue_stopped(dev))
762 netif_wake_queue(dev);
773 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28)
774 static const struct net_device_ops esd331_netdev_ops = {
775 .ndo_open = esd331_open,
776 .ndo_stop = esd331_close,
777 .ndo_start_xmit = esd331_start_xmit,
781 static struct net_device *__devinit esd331_pci_add_chan(struct pci_dev *pdev,
782 struct esd331_pci *board, u8 boards_net)
784 struct net_device *dev;
785 struct esd331_priv *priv;
788 dev = alloc_candev(sizeof(*priv));
790 return ERR_PTR(-ENOMEM);
792 priv = netdev_priv(dev);
793 priv->boards_net = boards_net;
796 SET_NETDEV_DEV(dev, &pdev->dev);
798 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,28)
799 dev->netdev_ops = &esd331_netdev_ops;
801 dev->open = esd331_open;
802 dev->stop = esd331_close;
803 dev->hard_start_xmit = esd331_start_xmit;
806 dev->irq = pdev->irq;
807 /* Set and enable PCI interrupts */
808 dev->flags |= IFF_ECHO;
810 priv->can.do_set_bittiming = esd331_set_bittiming;
811 priv->can.do_set_mode = esd331_set_mode;
813 err = register_candev(dev);
815 dev_err(&pdev->dev, "registering candev failed\n");
820 dev_info(&pdev->dev, "device %s registered\n", dev->name);
825 static int __devinit esd331_pci_init_one(struct pci_dev *pdev,
826 const struct pci_device_id *ent)
828 struct esd331_pci *board;
831 int read_features = 0;
834 "Initializing device %04x:%04x %04x:%04x\n",
835 pdev->vendor, pdev->device,
836 pdev->subsystem_vendor, pdev->subsystem_device);
838 board = kzalloc(sizeof(*board), GFP_KERNEL);
842 err = pci_enable_device(pdev);
846 err = pci_request_regions(pdev, DRV_NAME);
850 board->conf_addr = pci_iomap(pdev, 0, 0);
851 if (board->conf_addr == NULL) {
853 goto failure_release_pci;
855 board->base_addr1 = pci_iomap(pdev, 2, 0);
856 if (board->base_addr1 == NULL) {
858 goto failure_iounmap_conf;
860 board->base_addr2 = pci_iomap(pdev, 3, 0);
861 if (board->base_addr2 == NULL) {
863 goto failure_iounmap_base1;
866 spin_lock_init(&board->irq_lock);
869 board->dpr = esd331_init_pointer(board->base_addr1);
870 err = esd331_read_features(board);
872 /* esd331_read_features() works only after board reset */
873 /* So if failed: reset board and retry: */
874 if (!read_features) {
876 esd331_reset(board->conf_addr, 1);
880 goto failure_iounmap_base2;
883 for (i = 0; i < board->net_count; ++i) {
884 board->dev[i] = esd331_pci_add_chan(pdev, board, i);
885 if (IS_ERR(board->dev[i])) {
886 err = (int)board->dev[i];
887 goto failure_iounmap_base2;
889 if (esd331_write_allid(i, board)) {
890 dev_err(&pdev->dev, "device %s failed to enable all "
891 "IDs\n", board->dev[i]->name);
895 if (esd331_write_fast(board))
896 dev_err(&pdev->dev, "failed to enable fast mode\n");
898 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
899 err = request_irq(pdev->irq, &esd331_interrupt, SA_SHIRQ, "pci331",
902 err = request_irq(pdev->irq, &esd331_interrupt, IRQF_SHARED, "pci331",
907 goto failure_iounmap_base2;
909 pci_set_drvdata(pdev, board);
912 failure_iounmap_base2:
913 pci_iounmap(pdev, board->base_addr2);
915 failure_iounmap_base1:
916 pci_iounmap(pdev, board->base_addr1);
918 failure_iounmap_conf:
919 pci_iounmap(pdev, board->conf_addr);
922 pci_release_regions(pdev);
930 static void __devexit esd331_pci_remove_one(struct pci_dev *pdev)
932 struct esd331_pci *board = pci_get_drvdata(pdev);
935 esd331_disable_irq(board->conf_addr);
936 free_irq(pdev->irq, (void *)board);
938 for (i = 0; i < ESD331_MAX_CAN; i++) {
939 if (board->dev[i] == NULL)
942 unregister_candev(board->dev[i]);
943 free_netdev(board->dev[i]);
946 esd331_reset(board->conf_addr, 0); /* 0 = No wait for restart here */
947 /* If module is reloaded too early, it will try a reset with waiting */
949 pci_iounmap(pdev, board->base_addr2);
950 pci_iounmap(pdev, board->base_addr1);
951 pci_iounmap(pdev, board->conf_addr);
952 pci_release_regions(pdev);
954 pci_disable_device(pdev);
955 pci_set_drvdata(pdev, NULL);
960 static struct pci_driver esd331_pci_driver = {
962 .id_table = esd331_pci_tbl,
963 .probe = esd331_pci_init_one,
964 .remove = __devexit_p(esd331_pci_remove_one), };
966 static int __init esd331_pci_init(void)
968 printk(KERN_INFO "%s CAN netdevice driver\n", DRV_NAME);
969 return pci_register_driver(&esd331_pci_driver);
972 static void __exit esd331_pci_exit(void)
974 pci_unregister_driver(&esd331_pci_driver);
975 printk(KERN_INFO "%s driver removed\n", DRV_NAME);
978 module_init(esd331_pci_init);
979 module_exit(esd331_pci_exit);