/* Copyright (C) 2007-2008 One Stop Systems
* Copyright (C) 2003-2006 SBE, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/module.h>
#include <linux/hdlc.h>
#include <linux/if_arp.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
#include "pmcc4_sysdep.h"
#include "sbecom_inline_linux.h"
#include "libsbew.h"
#include "pmcc4.h"
#include "pmcc4_ioctls.h"
#include "pmcc4_private.h"
#include "sbeproc.h"
/*****************************************************************************************
* Error out early if we have compiler trouble.
*
* (This section is included from the kernel's init/main.c as a friendly
* spiderman recommendation...)
*
* Versions of gcc older than that listed below may actually compile and link
* okay, but the end product can have subtle run time bugs. To avoid associated
* bogus bug reports, we flatly refuse to compile with a gcc that is known to be
* too old from the very beginning.
*/
#if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)
#error Sorry, your GCC is too old. It builds incorrect kernels.
#endif
#if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
#warning gcc-4.1.0 is known to miscompile the kernel. A different compiler version is recommended.
#endif
/*****************************************************************************************/
#ifdef SBE_INCLUDE_SYMBOLS
#define STATIC
#else
#define STATIC static
#endif
#define CHANNAME "hdlc"
/*******************************************************************/
/* forward references */
status_t c4_chan_work_init (mpi_t *, mch_t *);
void musycc_wq_chan_restart (void *);
status_t __init c4_init (ci_t *, u_char *, u_char *);
status_t __init c4_init2 (ci_t *);
ci_t *__init c4_new (void *);
int __init c4hw_attach_all (void);
void __init hdw_sn_get (hdw_info_t *, int);
#ifdef CONFIG_SBE_PMCC4_NCOMM
irqreturn_t c4_ebus_intr_th_handler (void *);
#endif
int c4_frame_rw (ci_t *, struct sbecom_port_param *);
status_t c4_get_port (ci_t *, int);
int c4_loop_port (ci_t *, int, u_int8_t);
int c4_musycc_rw (ci_t *, struct c4_musycc_param *);
int c4_new_chan (ci_t *, int, int, void *);
status_t c4_set_port (ci_t *, int);
int c4_pld_rw (ci_t *, struct sbecom_port_param *);
void cleanup_devs (void);
void cleanup_ioremap (void);
status_t musycc_chan_down (ci_t *, int);
irqreturn_t musycc_intr_th_handler (void *);
int musycc_start_xmit (ci_t *, int, void *);
extern char pmcc4_OSSI_release[];
extern ci_t *CI;
extern struct s_hdw_info hdw_info[];
#if defined(CONFIG_SBE_HDLC_V7) || defined(CONFIG_SBE_WAN256T3_HDLC_V7) || \
defined(CONFIG_SBE_HDLC_V7_MODULE) || defined(CONFIG_SBE_WAN256T3_HDLC_V7_MODULE)
#define _v7_hdlc_ 1
#else
#define _v7_hdlc_ 0
#endif
#if _v7_hdlc_
#define V7(x) (x ## _v7)
extern int hdlc_netif_rx_v7 (hdlc_device *, struct sk_buff *);
extern int register_hdlc_device_v7 (hdlc_device *);
extern int unregister_hdlc_device_v7 (hdlc_device *);
#else
#define V7(x) x
#endif
int error_flag; /* module load error reporting */
int cxt1e1_log_level = LOG_ERROR;
int log_level_default = LOG_ERROR;
module_param(cxt1e1_log_level, int, 0444);
int cxt1e1_max_mru = MUSYCC_MRU;
int max_mru_default = MUSYCC_MRU;
module_param(cxt1e1_max_mru, int, 0444);
int cxt1e1_max_mtu = MUSYCC_MTU;
int max_mtu_default = MUSYCC_MTU;
module_param(cxt1e1_max_mtu, int, 0444);
int max_txdesc_used = MUSYCC_TXDESC_MIN;
int max_txdesc_default = MUSYCC_TXDESC_MIN;
module_param(max_txdesc_used, int, 0444);
int max_rxdesc_used = MUSYCC_RXDESC_MIN;
int max_rxdesc_default = MUSYCC_RXDESC_MIN;
module_param(max_rxdesc_used, int, 0444);
/****************************************************************************/
/****************************************************************************/
/****************************************************************************/
void *
getuserbychan (int channum)
{
mch_t *ch;
ch = c4_find_chan (channum);
return ch ? ch->user : 0;
}
char *
get_hdlc_name (hdlc_device * hdlc)
{
struct c4_priv *priv = hdlc->priv;
struct net_device *dev = getuserbychan (priv->channum);
return dev->name;
}
static status_t
mkret (int bsd)
{
if (bsd > 0)
return -bsd;
else
return bsd;
}
/***************************************************************************/
#include <linux/workqueue.h>
/***
* One workqueue (wq) per port (since musycc allows simultaneous group
* commands), with individual data for each channel:
*
* mpi_t -> struct workqueue_struct *wq_port; (dynamically allocated using
* create_workqueue())
*
* With work structure (work) statically allocated for each channel:
*
* mch_t -> struct work_struct ch_work; (statically allocated using ???)
*
***/
/*
* Called by the start transmit routine when a channel TX_ENABLE is to be
* issued. This queues the transmission start request among other channels
* within a port's group.
*/
void
c4_wk_chan_restart (mch_t * ch)
{
mpi_t *pi = ch->up;
#ifdef RLD_RESTART_DEBUG
pr_info(">> %s: queueing Port %d Chan %d, mch_t @ %p\n",
__func__, pi->portnum, ch->channum, ch);
#endif
/* create new entry w/in workqueue for this channel and let'er rip */
/** queue_work (struct workqueue_struct *queue,
** struct work_struct *work);
**/
queue_work (pi->wq_port, &ch->ch_work);
}
status_t
c4_wk_chan_init (mpi_t * pi, mch_t * ch)
{
/*
* this will be used to restart a stopped channel
*/
/** INIT_WORK (struct work_struct *work,
** void (*function)(void *),
** void *data);
**/
INIT_WORK(&ch->ch_work, (void *)musycc_wq_chan_restart);
return 0; /* success */
}
status_t
c4_wq_port_init (mpi_t * pi)
{
char name[16], *np; /* NOTE: name of the queue limited by system
* to 10 characters */
if (pi->wq_port)
return 0; /* already initialized */
np = name;
memset (name, 0, 16);
sprintf (np, "%s%d", pi->up->devname, pi->portnum); /* IE pmcc4-01) */
#ifdef RLD_RESTART_DEBUG
pr_info(">> %s: creating workqueue <%s> for Port %d.\n",
__func__, name, pi->portnum); /* RLD DEBUG */
#endif
if (!(pi->wq_port = create_singlethread_workqueue (name)))
return ENOMEM;
return 0; /* success */
}
void
c4_wq_port_cleanup (mpi_t * pi)
{
/*
* PORT POINT: cannot call this if WQ is statically allocated w/in
* structure since it calls kfree(wq);
*/
if (pi->wq_port)
{
destroy_workqueue (pi->wq_port); /* this also calls
* flush_workqueue() */
pi->wq_port = 0;
}
}
/***************************************************************************/
irqreturn_t
c4_linux_interrupt (int irq, void *dev_instance)
{
struct net_device *ndev = dev_instance;
return musycc_intr_th_handler(netdev_priv(ndev));
}
#ifdef CONFIG_SBE_PMCC4_NCOMM
irqreturn_t
c4_ebus_interrupt (int irq, void *dev_instance)
{
struct net_device *ndev = dev_instance;
return c4_ebus_intr_th_handler(netdev_priv(ndev));
}
#endif
static int
void_open (struct net_device * ndev)
{
pr_info("%s: trying to open master device !\n", ndev->name);
return -1;
}
STATIC int
chan_open (struct net_device * ndev)
{
hdlc_device *hdlc = dev_to_hdlc (ndev);
const struct c4_priv *priv = hdlc->priv;
int ret;
if ((ret = hdlc_open (ndev)))
{
pr_info("hdlc_open failure, err %d.\n", ret);
return ret;
}
if ((ret = c4_chan_up (priv->ci, priv->channum)))
return -ret;
try_module_get (THIS_MODULE);
netif_start_queue (ndev);
return 0; /* no error = success */
}
STATIC int
chan_close (struct net_device * ndev)
{
hdlc_device *hdlc = dev_to_hdlc (ndev);
const struct c4_priv *priv = hdlc->priv;
netif_stop_queue (ndev);
musycc_chan_down ((ci_t *) 0, priv->channum);
hdlc_close (ndev);
module_put (THIS_MODULE);
return 0;
}
STATIC int
chan_dev_ioctl (struct net_device * dev, struct ifreq * ifr, int cmd)
{
return hdlc_ioctl (dev, ifr, cmd);
}
STATIC int
chan_attach_noop (struct net_device * ndev, unsigned short foo_1, unsigned short foo_2)
{
return 0; /* our driver has nothing to do here, show's
* over, go home */
}
STATIC struct net_device_stats *
chan_get_stats (struct net_device * ndev)
{
mch_t *ch;
struct net_device_stats *nstats;
struct sbecom_chan_stats *stats;
int channum;
{
struct c4_priv *priv;
priv = (struct c4_priv *) dev_to_hdlc (ndev)->priv;
channum = priv->channum;
}
ch = c4_find_chan (channum);
if (ch == NULL)
return NULL;
nstats = &ndev->stats;
stats = &ch->s;
memset (nstats, 0, sizeof (struct net_device_stats));
nstats->rx_packets = stats->rx_packets;
nstats->tx_packets = stats->tx_packets;
nstats->rx_bytes = stats->rx_bytes;
nstats->tx_bytes = stats->tx_bytes;
nstats->rx_errors = stats->rx_length_errors +
stats->rx_over_errors +
stats->rx_crc_errors +
stats->rx_frame_errors +
stats->rx_fifo_errors +
stats->rx_missed_errors;
nstats->tx_errors = stats->tx_dropped +
stats->tx_aborted_errors +
stats->tx_fifo_errors;
nstats->rx_dropped = stats->rx_dropped;
nstats->tx_dropped = stats->tx_dropped;
nstats->rx_length_errors = stats->rx_length_errors;
nstats->rx_over_errors = stats->rx_over_errors;
nstats->rx_crc_errors = stats->rx_crc_errors;
nstats->rx_frame_errors = stats->rx_frame_errors;
nstats->rx_fifo_errors = stats->rx_fifo_errors;
nstats->rx_missed_errors = stats->rx_missed_errors;
nstats->tx_aborted_errors = stats->tx_aborted_errors;
nstats->tx_fifo_errors = stats->tx_fifo_errors;
return nstats;
}
static ci_t *
get_ci_by_dev (struct net_device * ndev)
{
return (ci_t *)(netdev_priv(ndev));
}
STATIC int
c4_linux_xmit (struct sk_buff * skb, struct net_device * ndev)
{
const struct c4_priv *priv;
int rval;
hdlc_device *hdlc = dev_to_hdlc (ndev);
priv = hdlc->priv;
rval = musycc_start_xmit (priv->ci, priv->channum, skb);
return rval;
}
static const struct net_device_ops chan_ops = {
.ndo_open = chan_open,
.ndo_stop = chan_close,
.ndo_start_xmit = c4_linux_xmit,
.ndo_do_ioctl = chan_dev_ioctl,
.ndo_get_stats = chan_get_stats,
};
STATIC struct net_device *
create_chan (struct net_device * ndev, ci_t * ci,
struct sbecom_chan_param * cp)
{
hdlc_device *hdlc;
struct net_device *dev;
hdw_info_t *hi;
int ret;
if (c4_find_chan (cp->channum))
return 0; /* channel already exists */
{
struct c4_priv *priv;
/* allocate then fill in private data structure */
priv = OS_kmalloc (sizeof (struct c4_priv));
if (!priv)
{
pr_warning("%s: no memory for net_device !\n", ci->devname);
return 0;
}
dev = alloc_hdlcdev (priv);
if (!dev)
{
pr_warning("%s: no memory for hdlc_device !\n", ci->devname);
OS_kfree (priv);
return 0;
}
priv->ci = ci;
priv->channum = cp->channum;
}
hdlc = dev_to_hdlc (dev);
dev->base_addr = 0; /* not I/O mapped */
dev->irq = ndev->irq;
dev->type = ARPHRD_RAWHDLC;
*dev->name = 0; /* default ifconfig name = "hdlc" */
hi = (hdw_info_t *) ci->hdw_info;
if (hi->mfg_info_sts == EEPROM_OK)
{
switch (hi->promfmt)
{
case PROM_FORMAT_TYPE1:
memcpy (dev->dev_addr, (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
break;
case PROM_FORMAT_TYPE2:
memcpy (dev->dev_addr, (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
break;
default:
memset (dev->dev_addr, 0, 6);
break;
}
} else
{
memset (dev->dev_addr, 0, 6);
}
hdlc->xmit = c4_linux_xmit;
dev->netdev_ops = &chan_ops;
/*
* The native hdlc stack calls this 'attach' routine during
* hdlc_raw_ioctl(), passing parameters for line encoding and parity.
* Since hdlc_raw_ioctl() stack does not interrogate whether an 'attach'
* routine is actually registered or not, we supply a dummy routine which
* does nothing (since encoding and parity are setup for our driver via a
* special configuration application).
*/
hdlc->attach = chan_attach_noop;
rtnl_unlock (); /* needed due to Ioctl calling sequence */
ret = register_hdlc_device (dev);
/* NOTE: <stats> setting must occur AFTER registration in order to "take" */
dev->tx_queue_len = MAX_DEFAULT_IFQLEN;
rtnl_lock (); /* needed due to Ioctl calling sequence */
if (ret)
{
if (cxt1e1_log_level >= LOG_WARN)
pr_info("%s: create_chan[%d] registration error = %d.\n",
ci->devname, cp->channum, ret);
free_netdev (dev); /* cleanup */
return 0; /* failed to register */
}
return dev;
}
/* the idea here is to get port information and pass it back (using pointer) */
STATIC status_t
do_get_port (struct net_device * ndev, void *data)
{
int ret;
ci_t *ci; /* ci stands for card information */
struct sbecom_port_param pp;/* copy data to kernel land */
if (copy_from_user (&pp, data, sizeof (struct sbecom_port_param)))
return -EFAULT;
if (pp.portnum >= MUSYCC_NPORTS)
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL; /* get card info */
ret = mkret (c4_get_port (ci, pp.portnum));
if (ret)
return ret;
if (copy_to_user (data, &ci->port[pp.portnum].p,
sizeof (struct sbecom_port_param)))
return -EFAULT;
return 0;
}
/* this function copys the user data and then calls the real action function */
STATIC status_t
do_set_port (struct net_device * ndev, void *data)
{
ci_t *ci; /* ci stands for card information */
struct sbecom_port_param pp;/* copy data to kernel land */
if (copy_from_user (&pp, data, sizeof (struct sbecom_port_param)))
return -EFAULT;
if (pp.portnum >= MUSYCC_NPORTS)
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL; /* get card info */
if (pp.portnum >= ci->max_port) /* sanity check */
return -ENXIO;
memcpy (&ci->port[pp.portnum].p, &pp, sizeof (struct sbecom_port_param));
return mkret (c4_set_port (ci, pp.portnum));
}
/* work the port loopback mode as per directed */
STATIC status_t
do_port_loop (struct net_device * ndev, void *data)
{
struct sbecom_port_param pp;
ci_t *ci;
if (copy_from_user (&pp, data, sizeof (struct sbecom_port_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
return mkret (c4_loop_port (ci, pp.portnum, pp.port_mode));
}
/* set the specified register with the given value / or just read it */
STATIC status_t
do_framer_rw (struct net_device * ndev, void *data)
{
struct sbecom_port_param pp;
ci_t *ci;
int ret;
if (copy_from_user (&pp, data, sizeof (struct sbecom_port_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
ret = mkret (c4_frame_rw (ci, &pp));
if (ret)
return ret;
if (copy_to_user (data, &pp, sizeof (struct sbecom_port_param)))
return -EFAULT;
return 0;
}
/* set the specified register with the given value / or just read it */
STATIC status_t
do_pld_rw (struct net_device * ndev, void *data)
{
struct sbecom_port_param pp;
ci_t *ci;
int ret;
if (copy_from_user (&pp, data, sizeof (struct sbecom_port_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
ret = mkret (c4_pld_rw (ci, &pp));
if (ret)
return ret;
if (copy_to_user (data, &pp, sizeof (struct sbecom_port_param)))
return -EFAULT;
return 0;
}
/* set the specified register with the given value / or just read it */
STATIC status_t
do_musycc_rw (struct net_device * ndev, void *data)
{
struct c4_musycc_param mp;
ci_t *ci;
int ret;
if (copy_from_user (&mp, data, sizeof (struct c4_musycc_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
ret = mkret (c4_musycc_rw (ci, &mp));
if (ret)
return ret;
if (copy_to_user (data, &mp, sizeof (struct c4_musycc_param)))
return -EFAULT;
return 0;
}
STATIC status_t
do_get_chan (struct net_device * ndev, void *data)
{
struct sbecom_chan_param cp;
int ret;
if (copy_from_user (&cp, data,
sizeof (struct sbecom_chan_param)))
return -EFAULT;
if ((ret = mkret (c4_get_chan (cp.channum, &cp))))
return ret;
if (copy_to_user (data, &cp, sizeof (struct sbecom_chan_param)))
return -EFAULT;
return 0;
}
STATIC status_t
do_set_chan (struct net_device * ndev, void *data)
{
struct sbecom_chan_param cp;
int ret;
ci_t *ci;
if (copy_from_user (&cp, data, sizeof (struct sbecom_chan_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
switch (ret = mkret (c4_set_chan (cp.channum, &cp)))
{
case 0:
return 0;
default:
return ret;
}
}
STATIC status_t
do_create_chan (struct net_device * ndev, void *data)
{
ci_t *ci;
struct net_device *dev;
struct sbecom_chan_param cp;
int ret;
if (copy_from_user (&cp, data, sizeof (struct sbecom_chan_param)))
return -EFAULT;
ci = get_ci_by_dev (ndev);
if (!ci)
return -EINVAL;
dev = create_chan (ndev, ci, &cp);
if (!dev)
return -EBUSY;
ret = mkret (c4_new_chan (ci, cp.port, cp.channum, dev));
if (ret)
{
rtnl_unlock (); /* needed due to Ioctl calling sequence */
unregister_hdlc_device (dev);
rtnl_lock (); /* needed due to Ioctl calling sequence */
free_netdev (dev);
}
return ret;
}
STATIC status_t
do_get_chan_stats (struct net_device * ndev, void *data)
{
struct c4_chan_stats_wrap ccs;
int ret;
if (copy_from_user (&ccs, data,
sizeof (struct c4_chan_stats_wrap)))
return -EFAULT;
switch (ret = mkret (c4_get_chan_stats (ccs.channum, &ccs.stats)))
{
case 0:
break;
default:
return ret;
}
if (copy_to_user (data, &ccs,
sizeof (struct c4_chan_stats_wrap)))
return -EFAULT;
return 0;
}
STATIC status_t
do_set_loglevel (struct net_device * ndev, void *data)
{
unsigned int cxt1e1_log_level;
if (copy_from_user (&cxt1e1_log_level, data, sizeof (int)))
return -EFAULT;
sbecom_set_loglevel (cxt1e1_log_level);
return 0;
}
STATIC status_t
do_deluser (struct net_device * ndev, int lockit)
{
if (ndev->flags & IFF_UP)
return -EBUSY;
{
ci_t *ci;
mch_t *ch;
const struct c4_priv *priv;
int channum;
priv = (struct c4_priv *) dev_to_hdlc (ndev)->priv;
ci = priv->ci;
channum = priv->channum;
ch = c4_find_chan (channum);
if (ch == NULL)
return -ENOENT;
ch->user = 0; /* will be freed, below */
}
if (lockit)
rtnl_unlock (); /* needed if Ioctl calling sequence */
unregister_hdlc_device (ndev);
if (lockit)
rtnl_lock (); /* needed if Ioctl calling sequence */
free_netdev (ndev);
return 0;
}
int
do_del_chan (struct net_device * musycc_dev, void *data)
{
struct sbecom_chan_param cp;
char buf[sizeof (CHANNAME) + 3];
struct net_device *dev;
int ret;
if (copy_from_user (&cp, data,
sizeof (struct sbecom_chan_param)))
return -EFAULT;
if (cp.channum > 999)
return -EINVAL;
snprintf (buf, sizeof(buf), CHANNAME "%d", cp.channum);
if (!(dev = dev_get_by_name (&init_net, buf)))
return -ENOENT;
dev_put (dev);
ret = do_deluser (dev, 1);
if (ret)
return ret;
return c4_del_chan (cp.channum);
}
int c4_reset_board (void *);
int
do_reset (struct net_device * musycc_dev, void *data)
{
const struct c4_priv *priv;
int i;
for (i = 0; i < 128; i++)
{
struct net_device *ndev;
char buf[sizeof (CHANNAME) + 3];
sprintf (buf, CHANNAME "%d", i);
if (!(ndev = dev_get_by_name(&init_net, buf)))
continue;
priv = dev_to_hdlc (ndev)->priv;
if ((unsigned long) (priv->ci) ==
(unsigned long) (netdev_priv(musycc_dev)))
{
ndev->flags &= ~IFF_UP;
dev_put (ndev);
netif_stop_queue (ndev);
do_deluser (ndev, 1);
} else
dev_put (ndev);
}
return 0;
}
int
do_reset_chan_stats (struct net_device * musycc_dev, void *data)
{
struct sbecom_chan_param cp;
if (copy_from_user (&cp, data,
sizeof (struct sbecom_chan_param)))
return -EFAULT;
return mkret (c4_del_chan_stats (cp.channum));
}
STATIC status_t
c4_ioctl (struct net_device * ndev, struct ifreq * ifr, int cmd)
{
ci_t *ci;
void *data;
int iocmd, iolen;
status_t ret;
static struct data
{
union
{
u_int8_t c;
u_int32_t i;
struct sbe_brd_info bip;
struct sbe_drv_info dip;
struct sbe_iid_info iip;
struct sbe_brd_addr bap;
struct sbecom_chan_stats stats;
struct sbecom_chan_param param;
struct temux_card_stats cards;
struct sbecom_card_param cardp;
struct sbecom_framer_param frp;
} u;
} arg;
if (!capable (CAP_SYS_ADMIN))
return -EPERM;
if (cmd != SIOCDEVPRIVATE + 15)
return -EINVAL;
if (!(ci = get_ci_by_dev (ndev)))
return -EINVAL;
if (ci->state != C_RUNNING)
return -ENODEV;
if (copy_from_user (&iocmd, ifr->ifr_data, sizeof (iocmd)))
return -EFAULT;
#if 0
if (copy_from_user (&len, ifr->ifr_data + sizeof (iocmd), sizeof (len)))
return -EFAULT;
#endif
#if 0
pr_info("c4_ioctl: iocmd %x, dir %x type %x nr %x iolen %d.\n", iocmd,
_IOC_DIR (iocmd), _IOC_TYPE (iocmd), _IOC_NR (iocmd),
_IOC_SIZE (iocmd));
#endif
iolen = _IOC_SIZE (iocmd);
data = ifr->ifr_data + sizeof (iocmd);
if (copy_from_user (&arg, data, iolen))
return -EFAULT;
ret = 0;
switch (iocmd)
{
case SBE_IOC_PORT_GET:
//pr_info(">> SBE_IOC_PORT_GET Ioctl...\n");
ret = do_get_port (ndev, data);
break;
case SBE_IOC_PORT_SET:
//pr_info(">> SBE_IOC_PORT_SET Ioctl...\n");
ret = do_set_port (ndev, data);
break;
case SBE_IOC_CHAN_GET:
//pr_info(">> SBE_IOC_CHAN_GET Ioctl...\n");
ret = do_get_chan (ndev, data);
break;
case SBE_IOC_CHAN_SET:
//pr_info(">> SBE_IOC_CHAN_SET Ioctl...\n");
ret = do_set_chan (ndev, data);
break;
case C4_DEL_CHAN:
//pr_info(">> C4_DEL_CHAN Ioctl...\n");
ret = do_del_chan (ndev, data);
break;
case SBE_IOC_CHAN_NEW:
ret = do_create_chan (ndev, data);
break;
case SBE_IOC_CHAN_GET_STAT:
ret = do_get_chan_stats (ndev, data);
break;
case SBE_IOC_LOGLEVEL:
ret = do_set_loglevel (ndev, data);
break;
case SBE_IOC_RESET_DEV:
ret = do_reset (ndev, data);
break;
case SBE_IOC_CHAN_DEL_STAT:
ret = do_reset_chan_stats (ndev, data);
break;
case C4_LOOP_PORT:
ret = do_port_loop (ndev, data);
break;
case C4_RW_FRMR:
ret = do_framer_rw (ndev, data);
break;
case C4_RW_MSYC:
ret = do_musycc_rw (ndev, data);
break;
case C4_RW_PLD:
ret = do_pld_rw (ndev, data);
break;
case SBE_IOC_IID_GET:
ret = (iolen == sizeof (struct sbe_iid_info)) ? c4_get_iidinfo (ci, &arg.u.iip) : -EFAULT;
if (ret == 0) /* no error, copy data */
if (copy_to_user (data, &arg, iolen))
return -EFAULT;
break;
default:
//pr_info(">> c4_ioctl: EINVAL - unknown iocmd <%x>\n", iocmd);
ret = -EINVAL;
break;
}
return mkret (ret);
}
static const struct net_device_ops c4_ops = {
.ndo_open = void_open,
.ndo_start_xmit = c4_linux_xmit,
.ndo_do_ioctl = c4_ioctl,
};
static void c4_setup(struct net_device *dev)
{
dev->type = ARPHRD_VOID;
dev->netdev_ops = &c4_ops;
}
struct net_device *__init
c4_add_dev (hdw_info_t * hi, int brdno, unsigned long f0, unsigned long f1,
int irq0, int irq1)
{
struct net_device *ndev;
ci_t *ci;
ndev = alloc_netdev(sizeof(ci_t), SBE_IFACETMPL, c4_setup);
if (!ndev)
{
pr_warning("%s: no memory for struct net_device !\n", hi->devname);
error_flag = ENOMEM;
return 0;
}
ci = (ci_t *)(netdev_priv(ndev));
ndev->irq = irq0;
ci->hdw_info = hi;
ci->state = C_INIT; /* mark as hardware not available */
ci->next = c4_list;
c4_list = ci;
ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
if (CI == 0)
CI = ci; /* DEBUG, only board 0 usage */
strcpy (ci->devname, hi->devname);
ci->release = &pmcc4_OSSI_release[0];
/* tasklet */
#if defined(SBE_ISR_TASKLET)
tasklet_init (&ci->ci_musycc_isr_tasklet,
(void (*) (unsigned long)) musycc_intr_bh_tasklet,
(unsigned long) ci);
if (atomic_read (&ci->ci_musycc_isr_tasklet.count) == 0)
tasklet_disable_nosync (&ci->ci_musycc_isr_tasklet);
#elif defined(SBE_ISR_IMMEDIATE)
ci->ci_musycc_isr_tq.routine = (void *) (unsigned long) musycc_intr_bh_tasklet;
ci->ci_musycc_isr_tq.data = ci;
#endif
if (register_netdev (ndev) ||
(c4_init (ci, (u_char *) f0, (u_char *) f1) != SBE_DRVR_SUCCESS))
{
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = ENODEV;
return 0;
}
/*************************************************************
* int request_irq(unsigned int irq,
* void (*handler)(int, void *, struct pt_regs *),
* unsigned long flags, const char *dev_name, void *dev_id);
* wherein:
* irq -> The interrupt number that is being requested.
* handler -> Pointer to handling function being installed.
* flags -> A bit mask of options related to interrupt management.
* dev_name -> String used in /proc/interrupts to show owner of interrupt.
* dev_id -> Pointer (for shared interrupt lines) to point to its own
* private data area (to identify which device is interrupting).
*
* extern void free_irq(unsigned int irq, void *dev_id);
**************************************************************/
if (request_irq (irq0, &c4_linux_interrupt,
IRQF_SHARED,
ndev->name, ndev))
{
pr_warning("%s: MUSYCC could not get irq: %d\n", ndev->name, irq0);
unregister_netdev (ndev);
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = EIO;
return 0;
}
#ifdef CONFIG_SBE_PMCC4_NCOMM
if (request_irq (irq1, &c4_ebus_interrupt, IRQF_SHARED, ndev->name, ndev))
{
pr_warning("%s: EBUS could not get irq: %d\n", hi->devname, irq1);
unregister_netdev (ndev);
free_irq (irq0, ndev);
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
error_flag = EIO;
return 0;
}
#endif
/* setup board identification information */
{
u_int32_t tmp;
hdw_sn_get (hi, brdno); /* also sets PROM format type (promfmt)
* for later usage */
switch (hi->promfmt)
{
case PROM_FORMAT_TYPE1:
memcpy (ndev->dev_addr, (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
memcpy (&tmp, (FLD_TYPE1 *) (hi->mfg_info.pft1.Id), 4); /* unaligned data
* acquisition */
ci->brd_id = cpu_to_be32 (tmp);
break;
case PROM_FORMAT_TYPE2:
memcpy (ndev->dev_addr, (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
memcpy (&tmp, (FLD_TYPE2 *) (hi->mfg_info.pft2.Id), 4); /* unaligned data
* acquisition */
ci->brd_id = cpu_to_be32 (tmp);
break;
default:
ci->brd_id = 0;
memset (ndev->dev_addr, 0, 6);
break;
}
#if 1
sbeid_set_hdwbid (ci); /* requires bid to be preset */
#else
sbeid_set_bdtype (ci); /* requires hdw_bid to be preset */
#endif
}
#ifdef CONFIG_PROC_FS
sbecom_proc_brd_init (ci);
#endif
#if defined(SBE_ISR_TASKLET)
tasklet_enable (&ci->ci_musycc_isr_tasklet);
#endif
if ((error_flag = c4_init2 (ci)) != SBE_DRVR_SUCCESS)
{
#ifdef CONFIG_PROC_FS
sbecom_proc_brd_cleanup (ci);
#endif
unregister_netdev (ndev);
free_irq (irq1, ndev);
free_irq (irq0, ndev);
OS_kfree (netdev_priv(ndev));
OS_kfree (ndev);
return 0; /* failure, error_flag is set */
}
return ndev;
}
STATIC int __init
c4_mod_init (void)
{
int rtn;
pr_warning("%s\n", pmcc4_OSSI_release);
if ((rtn = c4hw_attach_all ()))
return -rtn; /* installation failure - see system log */
/* housekeeping notifications */
if (cxt1e1_log_level != log_level_default)
pr_info("NOTE: driver parameter <cxt1e1_log_level> changed from default %d to %d.\n",
log_level_default, cxt1e1_log_level);
if (cxt1e1_max_mru != max_mru_default)
pr_info("NOTE: driver parameter <cxt1e1_max_mru> changed from default %d to %d.\n",
max_mru_default, cxt1e1_max_mru);
if (cxt1e1_max_mtu != max_mtu_default)
pr_info("NOTE: driver parameter <cxt1e1_max_mtu> changed from default %d to %d.\n",
max_mtu_default, cxt1e1_max_mtu);
if (max_rxdesc_used != max_rxdesc_default)
{
if (max_rxdesc_used > 2000)
max_rxdesc_used = 2000; /* out-of-bounds reset */
pr_info("NOTE: driver parameter <max_rxdesc_used> changed from default %d to %d.\n",
max_rxdesc_default, max_rxdesc_used);
}
if (max_txdesc_used != max_txdesc_default)
{
if (max_txdesc_used > 1000)
max_txdesc_used = 1000; /* out-of-bounds reset */
pr_info("NOTE: driver parameter <max_txdesc_used> changed from default %d to %d.\n",
max_txdesc_default, max_txdesc_used);
}
return 0; /* installation success */
}
/*
* find any still allocated hdlc registrations and unregister via call to
* do_deluser()
*/
STATIC void __exit
cleanup_hdlc (void)
{
hdw_info_t *hi;
ci_t *ci;
struct net_device *ndev;
int i, j, k;
for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++)
{
if (hi->ndev) /* a board has been attached */
{
ci = (ci_t *)(netdev_priv(hi->ndev));
for (j = 0; j < ci->max_port; j++)
for (k = 0; k < MUSYCC_NCHANS; k++)
if ((ndev = ci->port[j].chan[k]->user))
{
do_deluser (ndev, 0);
}
}
}
}
STATIC void __exit
c4_mod_remove (void)
{
cleanup_hdlc(); /* delete any missed channels */
cleanup_devs();
c4_cleanup();
cleanup_ioremap();
pr_info("SBE - driver removed.\n");
}
module_init (c4_mod_init);
module_exit (c4_mod_remove);
MODULE_AUTHOR ("SBE Technical Services <support@sbei.com>");
MODULE_DESCRIPTION ("wanPCI-CxT1E1 Generic HDLC WAN Driver module");
#ifdef MODULE_LICENSE
MODULE_LICENSE ("GPL");
#endif
/*** End-of-File ***/