diff options
Diffstat (limited to 'drivers/staging/cxt1e1/linux.c')
| -rw-r--r-- | drivers/staging/cxt1e1/linux.c | 1142 |
1 files changed, 1142 insertions, 0 deletions
diff --git a/drivers/staging/cxt1e1/linux.c b/drivers/staging/cxt1e1/linux.c new file mode 100644 index 00000000000..09f3d5ca75a --- /dev/null +++ b/drivers/staging/cxt1e1/linux.c @@ -0,0 +1,1142 @@ +/* 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 + +/*******************************************************************************/ + +#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 *); +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 ci_t *CI; +extern struct s_hdw_info hdw_info[]; + +int error_flag; /* module load error reporting */ +int cxt1e1_log_level = LOG_ERROR; +static int log_level_default = LOG_ERROR; +module_param(cxt1e1_log_level, int, 0444); + +int cxt1e1_max_mru = MUSYCC_MRU; +static 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 : NULL; +} + + +char * +get_hdlc_name(hdlc_device *hdlc) +{ + struct c4_priv *priv = hdlc->priv; + struct net_device *dev = getuserbychan(priv->channum); + + return dev->name; +} + +/***************************************************************************/ +#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]; /* NOTE: name of the queue limited by system + * to 10 characters */ + if (pi->wq_port) + return 0; /* already initialized */ + + /* IE pmcc4-01 */ + snprintf(name, sizeof(name), "%s%d", pi->up->devname, pi->portnum); + +#ifdef RLD_RESTART_DEBUG + pr_info(">> %s: creating workqueue <%s> for Port %d.\n", + __func__, name, pi->portnum); /* RLD DEBUG */ +#endif + pi->wq_port = create_singlethread_workqueue(name); + if (!pi->wq_port) + 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 = NULL; + } +} + +/***************************************************************************/ + +static 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 +static 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; + + ret = hdlc_open(ndev); + if (ret) { + pr_info("hdlc_open failure, err %d.\n", ret); + return ret; + } + + ret = c4_chan_up(priv->ci, priv->channum); + if (ret < 0) + 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) +{ + /* our driver has nothing to do here, show's + * over, go home + */ + return 0; +} + + +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 NULL; /* channel already exists */ + + { + struct c4_priv *priv; + + /* allocate then fill in private data structure */ + priv = kzalloc(sizeof(struct c4_priv), GFP_KERNEL); + if (!priv) { + pr_warning("%s: no memory for net_device !\n", + ci->devname); + return NULL; + } + dev = alloc_hdlcdev(priv); + if (!dev) { + pr_warning("%s: no memory for hdlc_device !\n", + ci->devname); + kfree(priv); + return NULL; + } + 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; + + /* needed due to Ioctl calling sequence */ + rtnl_unlock(); + ret = register_hdlc_device(dev); + /* NOTE: <stats> setting must occur AFTER registration in order to "take" */ + dev->tx_queue_len = MAX_DEFAULT_IFQLEN; + + /* needed due to Ioctl calling sequence */ + rtnl_lock(); + if (ret) { + if (cxt1e1_log_level >= LOG_WARN) + pr_info("%s: create_chan[%d] registration error = %d.\n", + ci->devname, cp->channum, ret); + /* cleanup */ + free_netdev(dev); + /* failed to register */ + return NULL; + } + 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 = c4_get_port(ci, pp.portnum); + if (ret < 0) + 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 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 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 = c4_frame_rw(ci, &pp); + if (ret < 0) + 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 = 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 = c4_musycc_rw(ci, &mp); + if (ret < 0) + 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; + + ret = c4_get_chan(cp.channum, &cp); + if (ret < 0) + 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; + 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; + return c4_set_chan(cp.channum, &cp); +} + +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 = c4_new_chan(ci, cp.port, cp.channum, dev); + if (ret < 0) { + /* needed due to Ioctl calling sequence */ + rtnl_unlock(); + unregister_hdlc_device(dev); + /* needed due to Ioctl calling sequence */ + rtnl_lock(); + 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; + + ret = c4_get_chan_stats(ccs.channum, &ccs.stats); + if (ret < 0) + 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 = NULL; /* will be freed, below */ + } + + /* needed if Ioctl calling sequence */ + if (lockit) + rtnl_unlock(); + unregister_hdlc_device(ndev); + /* needed if Ioctl calling sequence */ + if (lockit) + rtnl_lock(); + 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); + dev = __dev_get_by_name(&init_net, buf); + if (!dev) + return -ENODEV; + 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); + ndev = __dev_get_by_name(&init_net, buf); + if (!ndev) + continue; + priv = dev_to_hdlc(ndev)->priv; + + if ((unsigned long) (priv->ci) == + (unsigned long) (netdev_priv(musycc_dev))) { + ndev->flags &= ~IFF_UP; + netif_stop_queue(ndev); + do_deluser(ndev, 1); + } + } + 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 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; + ci = get_ci_by_dev(ndev); + if (!ci) + 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); + if (iolen > sizeof(arg)) + return -EFAULT; + data = ifr->ifr_data + sizeof(iocmd); + if (copy_from_user(&arg, data, iolen)) + return -EFAULT; + + ret = 0; + switch (iocmd) { + case SBE_IOC_PORT_GET: + ret = do_get_port(ndev, data); + break; + case SBE_IOC_PORT_SET: + ret = do_set_port(ndev, data); + break; + case SBE_IOC_CHAN_GET: + ret = do_get_chan(ndev, data); + break; + case SBE_IOC_CHAN_SET: + ret = do_set_chan(ndev, data); + break; + case C4_DEL_CHAN: + 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: + ret = -EINVAL; + break; + } + return 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 NULL; + } + 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) + CI = ci; /* DEBUG, only board 0 usage */ + + strcpy(ci->devname, hi->devname); + + /* 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)) { + kfree(netdev_priv(ndev)); + kfree(ndev); + error_flag = -ENODEV; + return NULL; + } + /************************************************************* + * 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); + kfree(netdev_priv(ndev)); + kfree(ndev); + error_flag = -EIO; + return NULL; + } +#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); + kfree(netdev_priv(ndev)); + kfree(ndev); + error_flag = -EIO; + return NULL; + } +#endif + + /* setup board identification information */ + + { + u_int32_t tmp; + + /* also sets PROM format type (promfmt) for later usage */ + hdw_sn_get(hi, brdno); + + switch (hi->promfmt) { + case PROM_FORMAT_TYPE1: + memcpy(ndev->dev_addr, + (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6); + /* unaligned data acquisition */ + memcpy(&tmp, (FLD_TYPE1 *) (hi->mfg_info.pft1.Id), 4); + ci->brd_id = cpu_to_be32(tmp); + break; + case PROM_FORMAT_TYPE2: + memcpy(ndev->dev_addr, + (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6); + /* unaligned data acquisition */ + memcpy(&tmp, (FLD_TYPE2 *) (hi->mfg_info.pft2.Id), 4); + ci->brd_id = cpu_to_be32(tmp); + break; + default: + ci->brd_id = 0; + memset(ndev->dev_addr, 0, 6); + break; + } + +#if 1 + /* requires bid to be preset */ + sbeid_set_hdwbid(ci); +#else + /* requires hdw_bid to be preset */ + sbeid_set_bdtype(ci); +#endif + } + +#ifdef CONFIG_PROC_FS + sbecom_proc_brd_init(ci); +#endif +#if defined(SBE_ISR_TASKLET) + tasklet_enable(&ci->ci_musycc_isr_tasklet); +#endif + + error_flag = c4_init2(ci); + if (error_flag != SBE_DRVR_SUCCESS) { +#ifdef CONFIG_PROC_FS + sbecom_proc_brd_cleanup(ci); +#endif + unregister_netdev(ndev); + free_irq(irq1, ndev); + free_irq(irq0, ndev); + kfree(netdev_priv(ndev)); + kfree(ndev); + /* failure, error_flag is set */ + return NULL; + } + return ndev; +} + +static int __init +c4_mod_init(void) +{ + int rtn; + + rtn = c4hw_attach_all(); + if (rtn) + 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++) { + ndev = ci->port[j].chan[k]->user; + if (ndev) + 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 ***/ |