| /* 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/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; |
| sprintf (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, |
| #if defined(SBE_ISR_TASKLET) |
| IRQF_DISABLED | IRQF_SHARED, |
| #elif defined(SBE_ISR_IMMEDIATE) |
| IRQF_DISABLED | IRQF_SHARED, |
| #elif defined(SBE_ISR_INLINE) |
| IRQF_SHARED, |
| #endif |
| 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 ***/ |
