1 /* Copyright (C) 2007-2008 One Stop Systems
2 * Copyright (C) 2003-2006 SBE, Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17 #include <linux/types.h>
18 #include <linux/netdevice.h>
19 #include <linux/module.h>
20 #include <linux/hdlc.h>
21 #include <linux/if_arp.h>
22 #include <linux/init.h>
23 #include <asm/uaccess.h>
24 #include <linux/rtnetlink.h>
25 #include <linux/skbuff.h>
26 #include "pmcc4_sysdep.h"
27 #include "sbecom_inline_linux.h"
30 #include "pmcc4_ioctls.h"
31 #include "pmcc4_private.h"
34 /*******************************************************************************
35 * Error out early if we have compiler trouble.
37 * (This section is included from the kernel's init/main.c as a friendly
38 * spiderman recommendation...)
40 * Versions of gcc older than that listed below may actually compile and link
41 * okay, but the end product can have subtle run time bugs. To avoid associated
42 * bogus bug reports, we flatly refuse to compile with a gcc that is known to be
43 * too old from the very beginning.
45 #if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)
46 #error Sorry, your GCC is too old. It builds incorrect kernels.
49 #if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
50 #warning gcc-4.1.0 is known to miscompile the kernel. A different compiler version is recommended.
53 /*******************************************************************************/
55 #define CHANNAME "hdlc"
57 /*******************************************************************/
58 /* forward references */
59 status_t c4_chan_work_init(mpi_t *, mch_t *);
60 void musycc_wq_chan_restart(void *);
61 status_t __init c4_init(ci_t *, u_char *, u_char *);
62 status_t __init c4_init2(ci_t *);
63 int __init c4hw_attach_all(void);
64 void __init hdw_sn_get(hdw_info_t *, int);
66 #ifdef CONFIG_SBE_PMCC4_NCOMM
67 irqreturn_t c4_ebus_intr_th_handler(void *);
70 int c4_frame_rw(ci_t *, struct sbecom_port_param *);
71 status_t c4_get_port(ci_t *, int);
72 int c4_loop_port(ci_t *, int, u_int8_t);
73 int c4_musycc_rw(ci_t *, struct c4_musycc_param *);
74 int c4_new_chan(ci_t *, int, int, void *);
75 status_t c4_set_port(ci_t *, int);
76 int c4_pld_rw(ci_t *, struct sbecom_port_param *);
77 void cleanup_devs(void);
78 void cleanup_ioremap(void);
79 status_t musycc_chan_down(ci_t *, int);
80 irqreturn_t musycc_intr_th_handler(void *);
81 int musycc_start_xmit(ci_t *, int, void *);
84 extern struct s_hdw_info hdw_info[];
86 #if defined(CONFIG_SBE_HDLC_V7) || defined(CONFIG_SBE_WAN256T3_HDLC_V7) || \
87 defined(CONFIG_SBE_HDLC_V7_MODULE) || defined(CONFIG_SBE_WAN256T3_HDLC_V7_MODULE)
94 #define V7(x) (x ## _v7)
95 extern int hdlc_netif_rx_v7(hdlc_device *, struct sk_buff *);
96 extern int register_hdlc_device_v7(hdlc_device *);
97 extern int unregister_hdlc_device_v7(hdlc_device *);
103 int error_flag; /* module load error reporting */
104 int cxt1e1_log_level = LOG_ERROR;
105 static int log_level_default = LOG_ERROR;
106 module_param(cxt1e1_log_level, int, 0444);
108 int cxt1e1_max_mru = MUSYCC_MRU;
109 static int max_mru_default = MUSYCC_MRU;
110 module_param(cxt1e1_max_mru, int, 0444);
112 int cxt1e1_max_mtu = MUSYCC_MTU;
113 int max_mtu_default = MUSYCC_MTU;
114 module_param(cxt1e1_max_mtu, int, 0444);
116 int max_txdesc_used = MUSYCC_TXDESC_MIN;
117 int max_txdesc_default = MUSYCC_TXDESC_MIN;
118 module_param(max_txdesc_used, int, 0444);
120 int max_rxdesc_used = MUSYCC_RXDESC_MIN;
121 int max_rxdesc_default = MUSYCC_RXDESC_MIN;
122 module_param(max_rxdesc_used, int, 0444);
124 /****************************************************************************/
125 /****************************************************************************/
126 /****************************************************************************/
129 getuserbychan(int channum)
133 ch = c4_find_chan(channum);
134 return ch ? ch->user : NULL;
139 get_hdlc_name(hdlc_device *hdlc)
141 struct c4_priv *priv = hdlc->priv;
142 struct net_device *dev = getuserbychan(priv->channum);
147 /***************************************************************************/
148 #include <linux/workqueue.h>
151 * One workqueue (wq) per port (since musycc allows simultaneous group
152 * commands), with individual data for each channel:
154 * mpi_t -> struct workqueue_struct *wq_port; (dynamically allocated using
155 * create_workqueue())
157 * With work structure (work) statically allocated for each channel:
159 * mch_t -> struct work_struct ch_work; (statically allocated using ???)
165 * Called by the start transmit routine when a channel TX_ENABLE is to be
166 * issued. This queues the transmission start request among other channels
167 * within a port's group.
170 c4_wk_chan_restart(mch_t *ch)
174 #ifdef RLD_RESTART_DEBUG
175 pr_info(">> %s: queueing Port %d Chan %d, mch_t @ %p\n",
176 __func__, pi->portnum, ch->channum, ch);
179 /* create new entry w/in workqueue for this channel and let'er rip */
181 /** queue_work(struct workqueue_struct *queue,
182 ** struct work_struct *work);
184 queue_work(pi->wq_port, &ch->ch_work);
188 c4_wk_chan_init(mpi_t *pi, mch_t *ch)
191 * this will be used to restart a stopped channel
194 /** INIT_WORK(struct work_struct *work,
195 ** void (*function)(void *),
198 INIT_WORK(&ch->ch_work, (void *)musycc_wq_chan_restart);
199 return 0; /* success */
203 c4_wq_port_init(mpi_t *pi)
206 char name[16]; /* NOTE: name of the queue limited by system
207 * to 10 characters */
209 return 0; /* already initialized */
212 snprintf(name, sizeof(name), "%s%d", pi->up->devname, pi->portnum);
214 #ifdef RLD_RESTART_DEBUG
215 pr_info(">> %s: creating workqueue <%s> for Port %d.\n",
216 __func__, name, pi->portnum); /* RLD DEBUG */
218 pi->wq_port = create_singlethread_workqueue(name);
221 return 0; /* success */
225 c4_wq_port_cleanup(mpi_t *pi)
228 * PORT POINT: cannot call this if WQ is statically allocated w/in
229 * structure since it calls kfree(wq);
232 destroy_workqueue(pi->wq_port); /* this also calls
233 * flush_workqueue() */
238 /***************************************************************************/
241 c4_linux_interrupt(int irq, void *dev_instance)
243 struct net_device *ndev = dev_instance;
245 return musycc_intr_th_handler(netdev_priv(ndev));
249 #ifdef CONFIG_SBE_PMCC4_NCOMM
251 c4_ebus_interrupt(int irq, void *dev_instance)
253 struct net_device *ndev = dev_instance;
255 return c4_ebus_intr_th_handler(netdev_priv(ndev));
261 void_open(struct net_device *ndev)
263 pr_info("%s: trying to open master device !\n", ndev->name);
269 chan_open(struct net_device *ndev)
271 hdlc_device *hdlc = dev_to_hdlc(ndev);
272 const struct c4_priv *priv = hdlc->priv;
275 ret = hdlc_open(ndev);
277 pr_info("hdlc_open failure, err %d.\n", ret);
281 ret = c4_chan_up(priv->ci, priv->channum);
284 try_module_get(THIS_MODULE);
285 netif_start_queue(ndev);
286 return 0; /* no error = success */
291 chan_close(struct net_device *ndev)
293 hdlc_device *hdlc = dev_to_hdlc(ndev);
294 const struct c4_priv *priv = hdlc->priv;
296 netif_stop_queue(ndev);
297 musycc_chan_down((ci_t *) 0, priv->channum);
299 module_put(THIS_MODULE);
305 chan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
307 return hdlc_ioctl(dev, ifr, cmd);
312 chan_attach_noop(struct net_device *ndev, unsigned short foo_1,
313 unsigned short foo_2)
315 /* our driver has nothing to do here, show's
322 static struct net_device_stats *
323 chan_get_stats(struct net_device *ndev)
326 struct net_device_stats *nstats;
327 struct sbecom_chan_stats *stats;
331 struct c4_priv *priv;
333 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
334 channum = priv->channum;
337 ch = c4_find_chan(channum);
341 nstats = &ndev->stats;
344 memset(nstats, 0, sizeof(struct net_device_stats));
345 nstats->rx_packets = stats->rx_packets;
346 nstats->tx_packets = stats->tx_packets;
347 nstats->rx_bytes = stats->rx_bytes;
348 nstats->tx_bytes = stats->tx_bytes;
349 nstats->rx_errors = stats->rx_length_errors +
350 stats->rx_over_errors +
351 stats->rx_crc_errors +
352 stats->rx_frame_errors +
353 stats->rx_fifo_errors +
354 stats->rx_missed_errors;
355 nstats->tx_errors = stats->tx_dropped +
356 stats->tx_aborted_errors +
357 stats->tx_fifo_errors;
358 nstats->rx_dropped = stats->rx_dropped;
359 nstats->tx_dropped = stats->tx_dropped;
361 nstats->rx_length_errors = stats->rx_length_errors;
362 nstats->rx_over_errors = stats->rx_over_errors;
363 nstats->rx_crc_errors = stats->rx_crc_errors;
364 nstats->rx_frame_errors = stats->rx_frame_errors;
365 nstats->rx_fifo_errors = stats->rx_fifo_errors;
366 nstats->rx_missed_errors = stats->rx_missed_errors;
368 nstats->tx_aborted_errors = stats->tx_aborted_errors;
369 nstats->tx_fifo_errors = stats->tx_fifo_errors;
376 get_ci_by_dev(struct net_device *ndev)
378 return (ci_t *)(netdev_priv(ndev));
383 c4_linux_xmit(struct sk_buff *skb, struct net_device *ndev)
385 const struct c4_priv *priv;
388 hdlc_device *hdlc = dev_to_hdlc(ndev);
392 rval = musycc_start_xmit(priv->ci, priv->channum, skb);
396 static const struct net_device_ops chan_ops = {
397 .ndo_open = chan_open,
398 .ndo_stop = chan_close,
399 .ndo_start_xmit = c4_linux_xmit,
400 .ndo_do_ioctl = chan_dev_ioctl,
401 .ndo_get_stats = chan_get_stats,
404 static struct net_device *
405 create_chan(struct net_device *ndev, ci_t *ci,
406 struct sbecom_chan_param *cp)
409 struct net_device *dev;
413 if (c4_find_chan(cp->channum))
414 return NULL; /* channel already exists */
417 struct c4_priv *priv;
419 /* allocate then fill in private data structure */
420 priv = kzalloc(sizeof(struct c4_priv), GFP_KERNEL);
422 pr_warning("%s: no memory for net_device !\n",
426 dev = alloc_hdlcdev(priv);
428 pr_warning("%s: no memory for hdlc_device !\n",
434 priv->channum = cp->channum;
437 hdlc = dev_to_hdlc(dev);
439 dev->base_addr = 0; /* not I/O mapped */
440 dev->irq = ndev->irq;
441 dev->type = ARPHRD_RAWHDLC;
442 *dev->name = 0; /* default ifconfig name = "hdlc" */
444 hi = (hdw_info_t *)ci->hdw_info;
445 if (hi->mfg_info_sts == EEPROM_OK) {
446 switch (hi->promfmt) {
447 case PROM_FORMAT_TYPE1:
448 memcpy(dev->dev_addr,
449 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
451 case PROM_FORMAT_TYPE2:
452 memcpy(dev->dev_addr,
453 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
456 memset(dev->dev_addr, 0, 6);
460 memset(dev->dev_addr, 0, 6);
462 hdlc->xmit = c4_linux_xmit;
464 dev->netdev_ops = &chan_ops;
466 * The native hdlc stack calls this 'attach' routine during
467 * hdlc_raw_ioctl(), passing parameters for line encoding and parity.
468 * Since hdlc_raw_ioctl() stack does not interrogate whether an 'attach'
469 * routine is actually registered or not, we supply a dummy routine which
470 * does nothing (since encoding and parity are setup for our driver via a
471 * special configuration application).
474 hdlc->attach = chan_attach_noop;
476 /* needed due to Ioctl calling sequence */
478 ret = register_hdlc_device(dev);
479 /* NOTE: <stats> setting must occur AFTER registration in order to "take" */
480 dev->tx_queue_len = MAX_DEFAULT_IFQLEN;
482 /* needed due to Ioctl calling sequence */
485 if (cxt1e1_log_level >= LOG_WARN)
486 pr_info("%s: create_chan[%d] registration error = %d.\n",
487 ci->devname, cp->channum, ret);
490 /* failed to register */
497 /* the idea here is to get port information and pass it back (using pointer) */
499 do_get_port(struct net_device *ndev, void *data)
502 ci_t *ci; /* ci stands for card information */
503 struct sbecom_port_param pp;/* copy data to kernel land */
505 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
507 if (pp.portnum >= MUSYCC_NPORTS)
509 ci = get_ci_by_dev(ndev);
511 return -EINVAL; /* get card info */
513 ret = c4_get_port(ci, pp.portnum);
516 if (copy_to_user(data, &ci->port[pp.portnum].p,
517 sizeof(struct sbecom_port_param)))
522 /* this function copys the user data and then calls the real action function */
524 do_set_port(struct net_device *ndev, void *data)
526 ci_t *ci; /* ci stands for card information */
527 struct sbecom_port_param pp;/* copy data to kernel land */
529 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
531 if (pp.portnum >= MUSYCC_NPORTS)
533 ci = get_ci_by_dev(ndev);
535 return -EINVAL; /* get card info */
537 if (pp.portnum >= ci->max_port) /* sanity check */
540 memcpy(&ci->port[pp.portnum].p, &pp, sizeof(struct sbecom_port_param));
541 return c4_set_port(ci, pp.portnum);
544 /* work the port loopback mode as per directed */
546 do_port_loop(struct net_device *ndev, void *data)
548 struct sbecom_port_param pp;
551 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
553 ci = get_ci_by_dev(ndev);
556 return c4_loop_port(ci, pp.portnum, pp.port_mode);
559 /* set the specified register with the given value / or just read it */
561 do_framer_rw(struct net_device *ndev, void *data)
563 struct sbecom_port_param pp;
567 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
569 ci = get_ci_by_dev(ndev);
572 ret = c4_frame_rw(ci, &pp);
575 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
580 /* set the specified register with the given value / or just read it */
582 do_pld_rw(struct net_device *ndev, void *data)
584 struct sbecom_port_param pp;
588 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
590 ci = get_ci_by_dev(ndev);
594 ret = c4_pld_rw(ci, &pp);
597 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
602 /* set the specified register with the given value / or just read it */
604 do_musycc_rw(struct net_device *ndev, void *data)
606 struct c4_musycc_param mp;
610 if (copy_from_user(&mp, data, sizeof(struct c4_musycc_param)))
612 ci = get_ci_by_dev(ndev);
615 ret = c4_musycc_rw(ci, &mp);
618 if (copy_to_user(data, &mp, sizeof(struct c4_musycc_param)))
624 do_get_chan(struct net_device *ndev, void *data)
626 struct sbecom_chan_param cp;
629 if (copy_from_user(&cp, data,
630 sizeof(struct sbecom_chan_param)))
633 ret = c4_get_chan(cp.channum, &cp);
637 if (copy_to_user(data, &cp, sizeof(struct sbecom_chan_param)))
643 do_set_chan(struct net_device *ndev, void *data)
645 struct sbecom_chan_param cp;
648 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
650 ci = get_ci_by_dev(ndev);
653 return c4_set_chan(cp.channum, &cp);
657 do_create_chan(struct net_device *ndev, void *data)
660 struct net_device *dev;
661 struct sbecom_chan_param cp;
664 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
666 ci = get_ci_by_dev(ndev);
669 dev = create_chan(ndev, ci, &cp);
672 ret = c4_new_chan(ci, cp.port, cp.channum, dev);
674 /* needed due to Ioctl calling sequence */
676 unregister_hdlc_device(dev);
677 /* needed due to Ioctl calling sequence */
685 do_get_chan_stats(struct net_device *ndev, void *data)
687 struct c4_chan_stats_wrap ccs;
690 if (copy_from_user(&ccs, data,
691 sizeof(struct c4_chan_stats_wrap)))
694 ret = c4_get_chan_stats(ccs.channum, &ccs.stats);
698 if (copy_to_user(data, &ccs,
699 sizeof(struct c4_chan_stats_wrap)))
704 do_set_loglevel(struct net_device *ndev, void *data)
706 unsigned int cxt1e1_log_level;
708 if (copy_from_user(&cxt1e1_log_level, data, sizeof(int)))
710 sbecom_set_loglevel(cxt1e1_log_level);
715 do_deluser(struct net_device *ndev, int lockit)
717 if (ndev->flags & IFF_UP)
723 const struct c4_priv *priv;
726 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
728 channum = priv->channum;
730 ch = c4_find_chan(channum);
733 ch->user = NULL; /* will be freed, below */
736 /* needed if Ioctl calling sequence */
739 unregister_hdlc_device(ndev);
740 /* needed if Ioctl calling sequence */
748 do_del_chan(struct net_device *musycc_dev, void *data)
750 struct sbecom_chan_param cp;
751 char buf[sizeof(CHANNAME) + 3];
752 struct net_device *dev;
755 if (copy_from_user(&cp, data,
756 sizeof(struct sbecom_chan_param)))
758 if (cp.channum > 999)
760 snprintf(buf, sizeof(buf), CHANNAME "%d", cp.channum);
761 dev = __dev_get_by_name(&init_net, buf);
764 ret = do_deluser(dev, 1);
767 return c4_del_chan(cp.channum);
769 int c4_reset_board(void *);
772 do_reset(struct net_device *musycc_dev, void *data)
774 const struct c4_priv *priv;
777 for (i = 0; i < 128; i++) {
778 struct net_device *ndev;
779 char buf[sizeof(CHANNAME) + 3];
781 sprintf(buf, CHANNAME "%d", i);
782 ndev = __dev_get_by_name(&init_net, buf);
785 priv = dev_to_hdlc(ndev)->priv;
787 if ((unsigned long) (priv->ci) ==
788 (unsigned long) (netdev_priv(musycc_dev))) {
789 ndev->flags &= ~IFF_UP;
790 netif_stop_queue(ndev);
798 do_reset_chan_stats(struct net_device *musycc_dev, void *data)
800 struct sbecom_chan_param cp;
802 if (copy_from_user(&cp, data,
803 sizeof(struct sbecom_chan_param)))
805 return c4_del_chan_stats(cp.channum);
809 c4_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
819 struct sbe_brd_info bip;
820 struct sbe_drv_info dip;
821 struct sbe_iid_info iip;
822 struct sbe_brd_addr bap;
823 struct sbecom_chan_stats stats;
824 struct sbecom_chan_param param;
825 struct temux_card_stats cards;
826 struct sbecom_card_param cardp;
827 struct sbecom_framer_param frp;
832 if (!capable(CAP_SYS_ADMIN))
834 if (cmd != SIOCDEVPRIVATE + 15)
836 ci = get_ci_by_dev(ndev);
839 if (ci->state != C_RUNNING)
841 if (copy_from_user(&iocmd, ifr->ifr_data, sizeof(iocmd)))
844 if (copy_from_user(&len, ifr->ifr_data + sizeof(iocmd), sizeof(len)))
849 pr_info("c4_ioctl: iocmd %x, dir %x type %x nr %x iolen %d.\n", iocmd,
850 _IOC_DIR(iocmd), _IOC_TYPE(iocmd), _IOC_NR(iocmd),
853 iolen = _IOC_SIZE(iocmd);
854 if (iolen > sizeof(arg))
856 data = ifr->ifr_data + sizeof(iocmd);
857 if (copy_from_user(&arg, data, iolen))
862 case SBE_IOC_PORT_GET:
863 ret = do_get_port(ndev, data);
865 case SBE_IOC_PORT_SET:
866 ret = do_set_port(ndev, data);
868 case SBE_IOC_CHAN_GET:
869 ret = do_get_chan(ndev, data);
871 case SBE_IOC_CHAN_SET:
872 ret = do_set_chan(ndev, data);
875 ret = do_del_chan(ndev, data);
877 case SBE_IOC_CHAN_NEW:
878 ret = do_create_chan(ndev, data);
880 case SBE_IOC_CHAN_GET_STAT:
881 ret = do_get_chan_stats(ndev, data);
883 case SBE_IOC_LOGLEVEL:
884 ret = do_set_loglevel(ndev, data);
886 case SBE_IOC_RESET_DEV:
887 ret = do_reset(ndev, data);
889 case SBE_IOC_CHAN_DEL_STAT:
890 ret = do_reset_chan_stats(ndev, data);
893 ret = do_port_loop(ndev, data);
896 ret = do_framer_rw(ndev, data);
899 ret = do_musycc_rw(ndev, data);
902 ret = do_pld_rw(ndev, data);
904 case SBE_IOC_IID_GET:
905 ret = (iolen == sizeof(struct sbe_iid_info)) ?
906 c4_get_iidinfo(ci, &arg.u.iip) : -EFAULT;
907 if (ret == 0) /* no error, copy data */
908 if (copy_to_user(data, &arg, iolen))
918 static const struct net_device_ops c4_ops = {
919 .ndo_open = void_open,
920 .ndo_start_xmit = c4_linux_xmit,
921 .ndo_do_ioctl = c4_ioctl,
924 static void c4_setup(struct net_device *dev)
926 dev->type = ARPHRD_VOID;
927 dev->netdev_ops = &c4_ops;
930 struct net_device *__init
931 c4_add_dev(hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
934 struct net_device *ndev;
937 ndev = alloc_netdev(sizeof(ci_t), SBE_IFACETMPL, c4_setup);
939 pr_warning("%s: no memory for struct net_device !\n",
941 error_flag = -ENOMEM;
944 ci = (ci_t *)(netdev_priv(ndev));
948 ci->state = C_INIT; /* mark as hardware not available */
951 ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
954 CI = ci; /* DEBUG, only board 0 usage */
956 strcpy(ci->devname, hi->devname);
959 #if defined(SBE_ISR_TASKLET)
960 tasklet_init(&ci->ci_musycc_isr_tasklet,
961 (void (*) (unsigned long)) musycc_intr_bh_tasklet,
964 if (atomic_read(&ci->ci_musycc_isr_tasklet.count) == 0)
965 tasklet_disable_nosync(&ci->ci_musycc_isr_tasklet);
966 #elif defined(SBE_ISR_IMMEDIATE)
967 ci->ci_musycc_isr_tq.routine = (void *)(unsigned long)musycc_intr_bh_tasklet;
968 ci->ci_musycc_isr_tq.data = ci;
972 if (register_netdev(ndev) ||
973 (c4_init(ci, (u_char *) f0, (u_char *) f1) != SBE_DRVR_SUCCESS)) {
974 kfree(netdev_priv(ndev));
976 error_flag = -ENODEV;
979 /*************************************************************
980 * int request_irq(unsigned int irq,
981 * void (*handler)(int, void *, struct pt_regs *),
982 * unsigned long flags, const char *dev_name, void *dev_id);
984 * irq -> The interrupt number that is being requested.
985 * handler -> Pointer to handling function being installed.
986 * flags -> A bit mask of options related to interrupt management.
987 * dev_name -> String used in /proc/interrupts to show owner of interrupt.
988 * dev_id -> Pointer (for shared interrupt lines) to point to its own
989 * private data area (to identify which device is interrupting).
991 * extern void free_irq(unsigned int irq, void *dev_id);
992 **************************************************************/
994 if (request_irq(irq0, &c4_linux_interrupt,
997 pr_warning("%s: MUSYCC could not get irq: %d\n",
999 unregister_netdev(ndev);
1000 kfree(netdev_priv(ndev));
1005 #ifdef CONFIG_SBE_PMCC4_NCOMM
1006 if (request_irq(irq1, &c4_ebus_interrupt, IRQF_SHARED, ndev->name, ndev)) {
1007 pr_warning("%s: EBUS could not get irq: %d\n", hi->devname, irq1);
1008 unregister_netdev(ndev);
1009 free_irq(irq0, ndev);
1010 kfree(netdev_priv(ndev));
1017 /* setup board identification information */
1022 /* also sets PROM format type (promfmt) for later usage */
1023 hdw_sn_get(hi, brdno);
1025 switch (hi->promfmt) {
1026 case PROM_FORMAT_TYPE1:
1027 memcpy(ndev->dev_addr,
1028 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
1029 /* unaligned data acquisition */
1030 memcpy(&tmp, (FLD_TYPE1 *) (hi->mfg_info.pft1.Id), 4);
1031 ci->brd_id = cpu_to_be32(tmp);
1033 case PROM_FORMAT_TYPE2:
1034 memcpy(ndev->dev_addr,
1035 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
1036 /* unaligned data acquisition */
1037 memcpy(&tmp, (FLD_TYPE2 *) (hi->mfg_info.pft2.Id), 4);
1038 ci->brd_id = cpu_to_be32(tmp);
1042 memset(ndev->dev_addr, 0, 6);
1047 /* requires bid to be preset */
1048 sbeid_set_hdwbid(ci);
1050 /* requires hdw_bid to be preset */
1051 sbeid_set_bdtype(ci);
1055 #ifdef CONFIG_PROC_FS
1056 sbecom_proc_brd_init(ci);
1058 #if defined(SBE_ISR_TASKLET)
1059 tasklet_enable(&ci->ci_musycc_isr_tasklet);
1062 error_flag = c4_init2(ci);
1063 if (error_flag != SBE_DRVR_SUCCESS) {
1064 #ifdef CONFIG_PROC_FS
1065 sbecom_proc_brd_cleanup(ci);
1067 unregister_netdev(ndev);
1068 free_irq(irq1, ndev);
1069 free_irq(irq0, ndev);
1070 kfree(netdev_priv(ndev));
1072 /* failure, error_flag is set */
1083 rtn = c4hw_attach_all();
1085 return -rtn; /* installation failure - see system log */
1087 /* housekeeping notifications */
1088 if (cxt1e1_log_level != log_level_default)
1089 pr_info("NOTE: driver parameter <cxt1e1_log_level> changed from default %d to %d.\n",
1090 log_level_default, cxt1e1_log_level);
1091 if (cxt1e1_max_mru != max_mru_default)
1092 pr_info("NOTE: driver parameter <cxt1e1_max_mru> changed from default %d to %d.\n",
1093 max_mru_default, cxt1e1_max_mru);
1094 if (cxt1e1_max_mtu != max_mtu_default)
1095 pr_info("NOTE: driver parameter <cxt1e1_max_mtu> changed from default %d to %d.\n",
1096 max_mtu_default, cxt1e1_max_mtu);
1097 if (max_rxdesc_used != max_rxdesc_default) {
1098 if (max_rxdesc_used > 2000)
1099 max_rxdesc_used = 2000; /* out-of-bounds reset */
1100 pr_info("NOTE: driver parameter <max_rxdesc_used> changed from default %d to %d.\n",
1101 max_rxdesc_default, max_rxdesc_used);
1103 if (max_txdesc_used != max_txdesc_default) {
1104 if (max_txdesc_used > 1000)
1105 max_txdesc_used = 1000; /* out-of-bounds reset */
1106 pr_info("NOTE: driver parameter <max_txdesc_used> changed from default %d to %d.\n",
1107 max_txdesc_default, max_txdesc_used);
1109 return 0; /* installation success */
1114 * find any still allocated hdlc registrations and unregister via call to
1123 struct net_device *ndev;
1126 for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
1127 if (hi->ndev) { /* a board has been attached */
1128 ci = (ci_t *)(netdev_priv(hi->ndev));
1129 for (j = 0; j < ci->max_port; j++)
1130 for (k = 0; k < MUSYCC_NCHANS; k++) {
1131 ndev = ci->port[j].chan[k]->user;
1133 do_deluser(ndev, 0);
1143 cleanup_hdlc(); /* delete any missed channels */
1147 pr_info("SBE - driver removed.\n");
1150 module_init(c4_mod_init);
1151 module_exit(c4_mod_remove);
1153 MODULE_AUTHOR("SBE Technical Services <support@sbei.com>");
1154 MODULE_DESCRIPTION("wanPCI-CxT1E1 Generic HDLC WAN Driver module");
1155 #ifdef MODULE_LICENSE
1156 MODULE_LICENSE("GPL");
1159 /*** End-of-File ***/