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 int error_flag; /* module load error reporting */
87 int cxt1e1_log_level = LOG_ERROR;
88 static int log_level_default = LOG_ERROR;
89 module_param(cxt1e1_log_level, int, 0444);
91 int cxt1e1_max_mru = MUSYCC_MRU;
92 static int max_mru_default = MUSYCC_MRU;
93 module_param(cxt1e1_max_mru, int, 0444);
95 int cxt1e1_max_mtu = MUSYCC_MTU;
96 int max_mtu_default = MUSYCC_MTU;
97 module_param(cxt1e1_max_mtu, int, 0444);
99 int max_txdesc_used = MUSYCC_TXDESC_MIN;
100 int max_txdesc_default = MUSYCC_TXDESC_MIN;
101 module_param(max_txdesc_used, int, 0444);
103 int max_rxdesc_used = MUSYCC_RXDESC_MIN;
104 int max_rxdesc_default = MUSYCC_RXDESC_MIN;
105 module_param(max_rxdesc_used, int, 0444);
107 /****************************************************************************/
108 /****************************************************************************/
109 /****************************************************************************/
112 getuserbychan(int channum)
116 ch = c4_find_chan(channum);
117 return ch ? ch->user : NULL;
122 get_hdlc_name(hdlc_device *hdlc)
124 struct c4_priv *priv = hdlc->priv;
125 struct net_device *dev = getuserbychan(priv->channum);
130 /***************************************************************************/
131 #include <linux/workqueue.h>
134 * One workqueue (wq) per port (since musycc allows simultaneous group
135 * commands), with individual data for each channel:
137 * mpi_t -> struct workqueue_struct *wq_port; (dynamically allocated using
138 * create_workqueue())
140 * With work structure (work) statically allocated for each channel:
142 * mch_t -> struct work_struct ch_work; (statically allocated using ???)
148 * Called by the start transmit routine when a channel TX_ENABLE is to be
149 * issued. This queues the transmission start request among other channels
150 * within a port's group.
153 c4_wk_chan_restart(mch_t *ch)
157 #ifdef RLD_RESTART_DEBUG
158 pr_info(">> %s: queueing Port %d Chan %d, mch_t @ %p\n",
159 __func__, pi->portnum, ch->channum, ch);
162 /* create new entry w/in workqueue for this channel and let'er rip */
164 /** queue_work(struct workqueue_struct *queue,
165 ** struct work_struct *work);
167 queue_work(pi->wq_port, &ch->ch_work);
171 c4_wk_chan_init(mpi_t *pi, mch_t *ch)
174 * this will be used to restart a stopped channel
177 /** INIT_WORK(struct work_struct *work,
178 ** void (*function)(void *),
181 INIT_WORK(&ch->ch_work, (void *)musycc_wq_chan_restart);
182 return 0; /* success */
186 c4_wq_port_init(mpi_t *pi)
189 char name[16]; /* NOTE: name of the queue limited by system
190 * to 10 characters */
192 return 0; /* already initialized */
195 snprintf(name, sizeof(name), "%s%d", pi->up->devname, pi->portnum);
197 #ifdef RLD_RESTART_DEBUG
198 pr_info(">> %s: creating workqueue <%s> for Port %d.\n",
199 __func__, name, pi->portnum); /* RLD DEBUG */
201 pi->wq_port = create_singlethread_workqueue(name);
204 return 0; /* success */
208 c4_wq_port_cleanup(mpi_t *pi)
211 * PORT POINT: cannot call this if WQ is statically allocated w/in
212 * structure since it calls kfree(wq);
215 destroy_workqueue(pi->wq_port); /* this also calls
216 * flush_workqueue() */
221 /***************************************************************************/
224 c4_linux_interrupt(int irq, void *dev_instance)
226 struct net_device *ndev = dev_instance;
228 return musycc_intr_th_handler(netdev_priv(ndev));
232 #ifdef CONFIG_SBE_PMCC4_NCOMM
234 c4_ebus_interrupt(int irq, void *dev_instance)
236 struct net_device *ndev = dev_instance;
238 return c4_ebus_intr_th_handler(netdev_priv(ndev));
244 void_open(struct net_device *ndev)
246 pr_info("%s: trying to open master device !\n", ndev->name);
252 chan_open(struct net_device *ndev)
254 hdlc_device *hdlc = dev_to_hdlc(ndev);
255 const struct c4_priv *priv = hdlc->priv;
258 ret = hdlc_open(ndev);
260 pr_info("hdlc_open failure, err %d.\n", ret);
264 ret = c4_chan_up(priv->ci, priv->channum);
267 try_module_get(THIS_MODULE);
268 netif_start_queue(ndev);
269 return 0; /* no error = success */
274 chan_close(struct net_device *ndev)
276 hdlc_device *hdlc = dev_to_hdlc(ndev);
277 const struct c4_priv *priv = hdlc->priv;
279 netif_stop_queue(ndev);
280 musycc_chan_down((ci_t *) 0, priv->channum);
282 module_put(THIS_MODULE);
288 chan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
290 return hdlc_ioctl(dev, ifr, cmd);
295 chan_attach_noop(struct net_device *ndev, unsigned short foo_1,
296 unsigned short foo_2)
298 /* our driver has nothing to do here, show's
305 static struct net_device_stats *
306 chan_get_stats(struct net_device *ndev)
309 struct net_device_stats *nstats;
310 struct sbecom_chan_stats *stats;
314 struct c4_priv *priv;
316 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
317 channum = priv->channum;
320 ch = c4_find_chan(channum);
324 nstats = &ndev->stats;
327 memset(nstats, 0, sizeof(struct net_device_stats));
328 nstats->rx_packets = stats->rx_packets;
329 nstats->tx_packets = stats->tx_packets;
330 nstats->rx_bytes = stats->rx_bytes;
331 nstats->tx_bytes = stats->tx_bytes;
332 nstats->rx_errors = stats->rx_length_errors +
333 stats->rx_over_errors +
334 stats->rx_crc_errors +
335 stats->rx_frame_errors +
336 stats->rx_fifo_errors +
337 stats->rx_missed_errors;
338 nstats->tx_errors = stats->tx_dropped +
339 stats->tx_aborted_errors +
340 stats->tx_fifo_errors;
341 nstats->rx_dropped = stats->rx_dropped;
342 nstats->tx_dropped = stats->tx_dropped;
344 nstats->rx_length_errors = stats->rx_length_errors;
345 nstats->rx_over_errors = stats->rx_over_errors;
346 nstats->rx_crc_errors = stats->rx_crc_errors;
347 nstats->rx_frame_errors = stats->rx_frame_errors;
348 nstats->rx_fifo_errors = stats->rx_fifo_errors;
349 nstats->rx_missed_errors = stats->rx_missed_errors;
351 nstats->tx_aborted_errors = stats->tx_aborted_errors;
352 nstats->tx_fifo_errors = stats->tx_fifo_errors;
359 get_ci_by_dev(struct net_device *ndev)
361 return (ci_t *)(netdev_priv(ndev));
366 c4_linux_xmit(struct sk_buff *skb, struct net_device *ndev)
368 const struct c4_priv *priv;
371 hdlc_device *hdlc = dev_to_hdlc(ndev);
375 rval = musycc_start_xmit(priv->ci, priv->channum, skb);
379 static const struct net_device_ops chan_ops = {
380 .ndo_open = chan_open,
381 .ndo_stop = chan_close,
382 .ndo_start_xmit = c4_linux_xmit,
383 .ndo_do_ioctl = chan_dev_ioctl,
384 .ndo_get_stats = chan_get_stats,
387 static struct net_device *
388 create_chan(struct net_device *ndev, ci_t *ci,
389 struct sbecom_chan_param *cp)
392 struct net_device *dev;
396 if (c4_find_chan(cp->channum))
397 return NULL; /* channel already exists */
400 struct c4_priv *priv;
402 /* allocate then fill in private data structure */
403 priv = kzalloc(sizeof(struct c4_priv), GFP_KERNEL);
405 pr_warning("%s: no memory for net_device !\n",
409 dev = alloc_hdlcdev(priv);
411 pr_warning("%s: no memory for hdlc_device !\n",
417 priv->channum = cp->channum;
420 hdlc = dev_to_hdlc(dev);
422 dev->base_addr = 0; /* not I/O mapped */
423 dev->irq = ndev->irq;
424 dev->type = ARPHRD_RAWHDLC;
425 *dev->name = 0; /* default ifconfig name = "hdlc" */
427 hi = (hdw_info_t *)ci->hdw_info;
428 if (hi->mfg_info_sts == EEPROM_OK) {
429 switch (hi->promfmt) {
430 case PROM_FORMAT_TYPE1:
431 memcpy(dev->dev_addr,
432 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
434 case PROM_FORMAT_TYPE2:
435 memcpy(dev->dev_addr,
436 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
439 memset(dev->dev_addr, 0, 6);
443 memset(dev->dev_addr, 0, 6);
445 hdlc->xmit = c4_linux_xmit;
447 dev->netdev_ops = &chan_ops;
449 * The native hdlc stack calls this 'attach' routine during
450 * hdlc_raw_ioctl(), passing parameters for line encoding and parity.
451 * Since hdlc_raw_ioctl() stack does not interrogate whether an 'attach'
452 * routine is actually registered or not, we supply a dummy routine which
453 * does nothing (since encoding and parity are setup for our driver via a
454 * special configuration application).
457 hdlc->attach = chan_attach_noop;
459 /* needed due to Ioctl calling sequence */
461 ret = register_hdlc_device(dev);
462 /* NOTE: <stats> setting must occur AFTER registration in order to "take" */
463 dev->tx_queue_len = MAX_DEFAULT_IFQLEN;
465 /* needed due to Ioctl calling sequence */
468 if (cxt1e1_log_level >= LOG_WARN)
469 pr_info("%s: create_chan[%d] registration error = %d.\n",
470 ci->devname, cp->channum, ret);
473 /* failed to register */
480 /* the idea here is to get port information and pass it back (using pointer) */
482 do_get_port(struct net_device *ndev, void *data)
485 ci_t *ci; /* ci stands for card information */
486 struct sbecom_port_param pp;/* copy data to kernel land */
488 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
490 if (pp.portnum >= MUSYCC_NPORTS)
492 ci = get_ci_by_dev(ndev);
494 return -EINVAL; /* get card info */
496 ret = c4_get_port(ci, pp.portnum);
499 if (copy_to_user(data, &ci->port[pp.portnum].p,
500 sizeof(struct sbecom_port_param)))
505 /* this function copys the user data and then calls the real action function */
507 do_set_port(struct net_device *ndev, void *data)
509 ci_t *ci; /* ci stands for card information */
510 struct sbecom_port_param pp;/* copy data to kernel land */
512 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
514 if (pp.portnum >= MUSYCC_NPORTS)
516 ci = get_ci_by_dev(ndev);
518 return -EINVAL; /* get card info */
520 if (pp.portnum >= ci->max_port) /* sanity check */
523 memcpy(&ci->port[pp.portnum].p, &pp, sizeof(struct sbecom_port_param));
524 return c4_set_port(ci, pp.portnum);
527 /* work the port loopback mode as per directed */
529 do_port_loop(struct net_device *ndev, void *data)
531 struct sbecom_port_param pp;
534 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
536 ci = get_ci_by_dev(ndev);
539 return c4_loop_port(ci, pp.portnum, pp.port_mode);
542 /* set the specified register with the given value / or just read it */
544 do_framer_rw(struct net_device *ndev, void *data)
546 struct sbecom_port_param pp;
550 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
552 ci = get_ci_by_dev(ndev);
555 ret = c4_frame_rw(ci, &pp);
558 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
563 /* set the specified register with the given value / or just read it */
565 do_pld_rw(struct net_device *ndev, void *data)
567 struct sbecom_port_param pp;
571 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
573 ci = get_ci_by_dev(ndev);
577 ret = c4_pld_rw(ci, &pp);
580 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
585 /* set the specified register with the given value / or just read it */
587 do_musycc_rw(struct net_device *ndev, void *data)
589 struct c4_musycc_param mp;
593 if (copy_from_user(&mp, data, sizeof(struct c4_musycc_param)))
595 ci = get_ci_by_dev(ndev);
598 ret = c4_musycc_rw(ci, &mp);
601 if (copy_to_user(data, &mp, sizeof(struct c4_musycc_param)))
607 do_get_chan(struct net_device *ndev, void *data)
609 struct sbecom_chan_param cp;
612 if (copy_from_user(&cp, data,
613 sizeof(struct sbecom_chan_param)))
616 ret = c4_get_chan(cp.channum, &cp);
620 if (copy_to_user(data, &cp, sizeof(struct sbecom_chan_param)))
626 do_set_chan(struct net_device *ndev, void *data)
628 struct sbecom_chan_param cp;
631 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
633 ci = get_ci_by_dev(ndev);
636 return c4_set_chan(cp.channum, &cp);
640 do_create_chan(struct net_device *ndev, void *data)
643 struct net_device *dev;
644 struct sbecom_chan_param cp;
647 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
649 ci = get_ci_by_dev(ndev);
652 dev = create_chan(ndev, ci, &cp);
655 ret = c4_new_chan(ci, cp.port, cp.channum, dev);
657 /* needed due to Ioctl calling sequence */
659 unregister_hdlc_device(dev);
660 /* needed due to Ioctl calling sequence */
668 do_get_chan_stats(struct net_device *ndev, void *data)
670 struct c4_chan_stats_wrap ccs;
673 if (copy_from_user(&ccs, data,
674 sizeof(struct c4_chan_stats_wrap)))
677 ret = c4_get_chan_stats(ccs.channum, &ccs.stats);
681 if (copy_to_user(data, &ccs,
682 sizeof(struct c4_chan_stats_wrap)))
687 do_set_loglevel(struct net_device *ndev, void *data)
689 unsigned int cxt1e1_log_level;
691 if (copy_from_user(&cxt1e1_log_level, data, sizeof(int)))
693 sbecom_set_loglevel(cxt1e1_log_level);
698 do_deluser(struct net_device *ndev, int lockit)
700 if (ndev->flags & IFF_UP)
706 const struct c4_priv *priv;
709 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
711 channum = priv->channum;
713 ch = c4_find_chan(channum);
716 ch->user = NULL; /* will be freed, below */
719 /* needed if Ioctl calling sequence */
722 unregister_hdlc_device(ndev);
723 /* needed if Ioctl calling sequence */
731 do_del_chan(struct net_device *musycc_dev, void *data)
733 struct sbecom_chan_param cp;
734 char buf[sizeof(CHANNAME) + 3];
735 struct net_device *dev;
738 if (copy_from_user(&cp, data,
739 sizeof(struct sbecom_chan_param)))
741 if (cp.channum > 999)
743 snprintf(buf, sizeof(buf), CHANNAME "%d", cp.channum);
744 dev = __dev_get_by_name(&init_net, buf);
747 ret = do_deluser(dev, 1);
750 return c4_del_chan(cp.channum);
752 int c4_reset_board(void *);
755 do_reset(struct net_device *musycc_dev, void *data)
757 const struct c4_priv *priv;
760 for (i = 0; i < 128; i++) {
761 struct net_device *ndev;
762 char buf[sizeof(CHANNAME) + 3];
764 sprintf(buf, CHANNAME "%d", i);
765 ndev = __dev_get_by_name(&init_net, buf);
768 priv = dev_to_hdlc(ndev)->priv;
770 if ((unsigned long) (priv->ci) ==
771 (unsigned long) (netdev_priv(musycc_dev))) {
772 ndev->flags &= ~IFF_UP;
773 netif_stop_queue(ndev);
781 do_reset_chan_stats(struct net_device *musycc_dev, void *data)
783 struct sbecom_chan_param cp;
785 if (copy_from_user(&cp, data,
786 sizeof(struct sbecom_chan_param)))
788 return c4_del_chan_stats(cp.channum);
792 c4_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
802 struct sbe_brd_info bip;
803 struct sbe_drv_info dip;
804 struct sbe_iid_info iip;
805 struct sbe_brd_addr bap;
806 struct sbecom_chan_stats stats;
807 struct sbecom_chan_param param;
808 struct temux_card_stats cards;
809 struct sbecom_card_param cardp;
810 struct sbecom_framer_param frp;
815 if (!capable(CAP_SYS_ADMIN))
817 if (cmd != SIOCDEVPRIVATE + 15)
819 ci = get_ci_by_dev(ndev);
822 if (ci->state != C_RUNNING)
824 if (copy_from_user(&iocmd, ifr->ifr_data, sizeof(iocmd)))
827 if (copy_from_user(&len, ifr->ifr_data + sizeof(iocmd), sizeof(len)))
832 pr_info("c4_ioctl: iocmd %x, dir %x type %x nr %x iolen %d.\n", iocmd,
833 _IOC_DIR(iocmd), _IOC_TYPE(iocmd), _IOC_NR(iocmd),
836 iolen = _IOC_SIZE(iocmd);
837 if (iolen > sizeof(arg))
839 data = ifr->ifr_data + sizeof(iocmd);
840 if (copy_from_user(&arg, data, iolen))
845 case SBE_IOC_PORT_GET:
846 ret = do_get_port(ndev, data);
848 case SBE_IOC_PORT_SET:
849 ret = do_set_port(ndev, data);
851 case SBE_IOC_CHAN_GET:
852 ret = do_get_chan(ndev, data);
854 case SBE_IOC_CHAN_SET:
855 ret = do_set_chan(ndev, data);
858 ret = do_del_chan(ndev, data);
860 case SBE_IOC_CHAN_NEW:
861 ret = do_create_chan(ndev, data);
863 case SBE_IOC_CHAN_GET_STAT:
864 ret = do_get_chan_stats(ndev, data);
866 case SBE_IOC_LOGLEVEL:
867 ret = do_set_loglevel(ndev, data);
869 case SBE_IOC_RESET_DEV:
870 ret = do_reset(ndev, data);
872 case SBE_IOC_CHAN_DEL_STAT:
873 ret = do_reset_chan_stats(ndev, data);
876 ret = do_port_loop(ndev, data);
879 ret = do_framer_rw(ndev, data);
882 ret = do_musycc_rw(ndev, data);
885 ret = do_pld_rw(ndev, data);
887 case SBE_IOC_IID_GET:
888 ret = (iolen == sizeof(struct sbe_iid_info)) ?
889 c4_get_iidinfo(ci, &arg.u.iip) : -EFAULT;
890 if (ret == 0) /* no error, copy data */
891 if (copy_to_user(data, &arg, iolen))
901 static const struct net_device_ops c4_ops = {
902 .ndo_open = void_open,
903 .ndo_start_xmit = c4_linux_xmit,
904 .ndo_do_ioctl = c4_ioctl,
907 static void c4_setup(struct net_device *dev)
909 dev->type = ARPHRD_VOID;
910 dev->netdev_ops = &c4_ops;
913 struct net_device *__init
914 c4_add_dev(hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
917 struct net_device *ndev;
920 ndev = alloc_netdev(sizeof(ci_t), SBE_IFACETMPL, c4_setup);
922 pr_warning("%s: no memory for struct net_device !\n",
924 error_flag = -ENOMEM;
927 ci = (ci_t *)(netdev_priv(ndev));
931 ci->state = C_INIT; /* mark as hardware not available */
934 ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
937 CI = ci; /* DEBUG, only board 0 usage */
939 strcpy(ci->devname, hi->devname);
942 #if defined(SBE_ISR_TASKLET)
943 tasklet_init(&ci->ci_musycc_isr_tasklet,
944 (void (*) (unsigned long)) musycc_intr_bh_tasklet,
947 if (atomic_read(&ci->ci_musycc_isr_tasklet.count) == 0)
948 tasklet_disable_nosync(&ci->ci_musycc_isr_tasklet);
949 #elif defined(SBE_ISR_IMMEDIATE)
950 ci->ci_musycc_isr_tq.routine = (void *)(unsigned long)musycc_intr_bh_tasklet;
951 ci->ci_musycc_isr_tq.data = ci;
955 if (register_netdev(ndev) ||
956 (c4_init(ci, (u_char *) f0, (u_char *) f1) != SBE_DRVR_SUCCESS)) {
957 kfree(netdev_priv(ndev));
959 error_flag = -ENODEV;
962 /*************************************************************
963 * int request_irq(unsigned int irq,
964 * void (*handler)(int, void *, struct pt_regs *),
965 * unsigned long flags, const char *dev_name, void *dev_id);
967 * irq -> The interrupt number that is being requested.
968 * handler -> Pointer to handling function being installed.
969 * flags -> A bit mask of options related to interrupt management.
970 * dev_name -> String used in /proc/interrupts to show owner of interrupt.
971 * dev_id -> Pointer (for shared interrupt lines) to point to its own
972 * private data area (to identify which device is interrupting).
974 * extern void free_irq(unsigned int irq, void *dev_id);
975 **************************************************************/
977 if (request_irq(irq0, &c4_linux_interrupt,
980 pr_warning("%s: MUSYCC could not get irq: %d\n",
982 unregister_netdev(ndev);
983 kfree(netdev_priv(ndev));
988 #ifdef CONFIG_SBE_PMCC4_NCOMM
989 if (request_irq(irq1, &c4_ebus_interrupt, IRQF_SHARED, ndev->name, ndev)) {
990 pr_warning("%s: EBUS could not get irq: %d\n", hi->devname, irq1);
991 unregister_netdev(ndev);
992 free_irq(irq0, ndev);
993 kfree(netdev_priv(ndev));
1000 /* setup board identification information */
1005 /* also sets PROM format type (promfmt) for later usage */
1006 hdw_sn_get(hi, brdno);
1008 switch (hi->promfmt) {
1009 case PROM_FORMAT_TYPE1:
1010 memcpy(ndev->dev_addr,
1011 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
1012 /* unaligned data acquisition */
1013 memcpy(&tmp, (FLD_TYPE1 *) (hi->mfg_info.pft1.Id), 4);
1014 ci->brd_id = cpu_to_be32(tmp);
1016 case PROM_FORMAT_TYPE2:
1017 memcpy(ndev->dev_addr,
1018 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
1019 /* unaligned data acquisition */
1020 memcpy(&tmp, (FLD_TYPE2 *) (hi->mfg_info.pft2.Id), 4);
1021 ci->brd_id = cpu_to_be32(tmp);
1025 memset(ndev->dev_addr, 0, 6);
1030 /* requires bid to be preset */
1031 sbeid_set_hdwbid(ci);
1033 /* requires hdw_bid to be preset */
1034 sbeid_set_bdtype(ci);
1038 #ifdef CONFIG_PROC_FS
1039 sbecom_proc_brd_init(ci);
1041 #if defined(SBE_ISR_TASKLET)
1042 tasklet_enable(&ci->ci_musycc_isr_tasklet);
1045 error_flag = c4_init2(ci);
1046 if (error_flag != SBE_DRVR_SUCCESS) {
1047 #ifdef CONFIG_PROC_FS
1048 sbecom_proc_brd_cleanup(ci);
1050 unregister_netdev(ndev);
1051 free_irq(irq1, ndev);
1052 free_irq(irq0, ndev);
1053 kfree(netdev_priv(ndev));
1055 /* failure, error_flag is set */
1066 rtn = c4hw_attach_all();
1068 return -rtn; /* installation failure - see system log */
1070 /* housekeeping notifications */
1071 if (cxt1e1_log_level != log_level_default)
1072 pr_info("NOTE: driver parameter <cxt1e1_log_level> changed from default %d to %d.\n",
1073 log_level_default, cxt1e1_log_level);
1074 if (cxt1e1_max_mru != max_mru_default)
1075 pr_info("NOTE: driver parameter <cxt1e1_max_mru> changed from default %d to %d.\n",
1076 max_mru_default, cxt1e1_max_mru);
1077 if (cxt1e1_max_mtu != max_mtu_default)
1078 pr_info("NOTE: driver parameter <cxt1e1_max_mtu> changed from default %d to %d.\n",
1079 max_mtu_default, cxt1e1_max_mtu);
1080 if (max_rxdesc_used != max_rxdesc_default) {
1081 if (max_rxdesc_used > 2000)
1082 max_rxdesc_used = 2000; /* out-of-bounds reset */
1083 pr_info("NOTE: driver parameter <max_rxdesc_used> changed from default %d to %d.\n",
1084 max_rxdesc_default, max_rxdesc_used);
1086 if (max_txdesc_used != max_txdesc_default) {
1087 if (max_txdesc_used > 1000)
1088 max_txdesc_used = 1000; /* out-of-bounds reset */
1089 pr_info("NOTE: driver parameter <max_txdesc_used> changed from default %d to %d.\n",
1090 max_txdesc_default, max_txdesc_used);
1092 return 0; /* installation success */
1097 * find any still allocated hdlc registrations and unregister via call to
1106 struct net_device *ndev;
1109 for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
1110 if (hi->ndev) { /* a board has been attached */
1111 ci = (ci_t *)(netdev_priv(hi->ndev));
1112 for (j = 0; j < ci->max_port; j++)
1113 for (k = 0; k < MUSYCC_NCHANS; k++) {
1114 ndev = ci->port[j].chan[k]->user;
1116 do_deluser(ndev, 0);
1126 cleanup_hdlc(); /* delete any missed channels */
1130 pr_info("SBE - driver removed.\n");
1133 module_init(c4_mod_init);
1134 module_exit(c4_mod_remove);
1136 MODULE_AUTHOR("SBE Technical Services <support@sbei.com>");
1137 MODULE_DESCRIPTION("wanPCI-CxT1E1 Generic HDLC WAN Driver module");
1138 #ifdef MODULE_LICENSE
1139 MODULE_LICENSE("GPL");
1142 /*** End-of-File ***/