ft1000_proc.c

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/*
 * ft1000_proc.c - ft1000 proc interface
 *
 * Copyright    (C) 2009-2010 Quintec
 *      (C) 2010 Open-nandra
 *      <[email protected]>
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License. See the file "COPYING" in the main directory of this
 * archive for more details.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/netdevice.h>


#include "ft1000_usb.h"

#define FT1000_PROC_DIR "ft1000"


#define PUTM_TO_PAGE(len,page,args...) \
    len += snprintf(page+len, PAGE_SIZE - len, args)

#define PUTX_TO_PAGE(len,page,message,size,var) \
    len += snprintf(page+len, PAGE_SIZE - len, message); \
    for (i = 0; i < (size - 1); i++) {\
        len += snprintf(page+len, PAGE_SIZE - len, "%02x:", var[i]); \
    } \
    len += snprintf(page+len, PAGE_SIZE - len, "%02x\n", var[i])

#define PUTD_TO_PAGE(len,page,message,size,var) \
    len += snprintf(page+len, PAGE_SIZE - len, message); \
    for (i = 0; i < (size - 1); i++) {\
        len += snprintf(page+len, PAGE_SIZE - len, "%d.", var[i]); \
    } \
    len += snprintf(page+len, PAGE_SIZE - len, "%d\n", var[i])


#define FTNET_PROC init_net.proc_net


int ft1000_read_dpram16 (struct ft1000_device *ft1000dev, u16 indx,
             u8 *buffer, u8 highlow);


static int
ft1000ReadProc(char *page, char **start, off_t off, int count, int *eof,
        void *data)
{
    struct net_device *dev;
    int len;
    int i;
    unsigned short ledStat;
    unsigned short conStat;

    struct ft1000_info *info;

    char *status[] = { 
        "Idle (Disconnect)", 
        "Searching",
        "Active (Connected)",
        "Waiting for L2",
        "Sleep",
        "No Coverage",
        "",
        "",
    };

    char *signal[] = { "", "*", "**", "***", "****" };
    int strength;
    int quality;
    struct timeval tv;
    time_t delta;

    dev = (struct net_device *) data;
    info = netdev_priv(dev);

    if (off > 0) {
        *eof = 1;
        return 0;
    }


    if (info->ProgConStat != 0xFF) {
        ft1000_read_dpram16(info->pFt1000Dev, FT1000_MAG_DSP_LED,
               (u8 *)&ledStat, FT1000_MAG_DSP_LED_INDX);
        info->LedStat = ntohs(ledStat);

        ft1000_read_dpram16(info->pFt1000Dev, FT1000_MAG_DSP_CON_STATE,
            (u8 *)&conStat, FT1000_MAG_DSP_CON_STATE_INDX);
        info->ConStat = ntohs(conStat);
        do_gettimeofday(&tv);
        delta = (tv.tv_sec - info->ConTm);
    } else {
        info->ConStat = 0xf;
        delta = 0;
    }

    i = (info->LedStat) & 0xf;
    switch (i) {
    case 0x1:
        strength = 1;
        break;
    case 0x3:
        strength = 2;
        break;
    case 0x7:
        strength = 3;
        break;
    case 0xf:
        strength = 4;
        break;
    default:
        strength = 0;
    }

    i = (info->LedStat >> 8) & 0xf;
    switch (i) {
    case 0x1:
        quality = 1;
        break;
    case 0x3:
        quality = 2;
        break;
    case 0x7:
        quality = 3;
        break;
    case 0xf:
        quality = 4;
        break;
    default:
        quality = 0;
    }

    len = 0;
    PUTM_TO_PAGE(len, page, "Connection Time: %02ld:%02ld:%02ld\n",
            ((delta / 3600) % 24), ((delta / 60) % 60), (delta % 60));
    PUTM_TO_PAGE(len, page, "Connection Time[s]: %ld\n", delta);
    PUTM_TO_PAGE(len, page, "Asic ID: %s\n",
        (info->AsicID) ==
        ELECTRABUZZ_ID ? "ELECTRABUZZ ASIC" : "MAGNEMITE ASIC");
    PUTX_TO_PAGE(len, page, "SKU: ", SKUSZ, info->Sku);
    PUTX_TO_PAGE(len, page, "EUI64: ", EUISZ, info->eui64);
    PUTD_TO_PAGE(len, page, "DSP version number: ", DSPVERSZ, info->DspVer);
    PUTX_TO_PAGE(len, page, "Hardware Serial Number: ", HWSERNUMSZ,
            info->HwSerNum);
    PUTX_TO_PAGE(len, page, "Caliberation Version: ", CALVERSZ,
            info->RfCalVer);
    PUTD_TO_PAGE(len, page, "Caliberation Date: ", CALDATESZ,
        info->RfCalDate);
    PUTM_TO_PAGE(len, page, "Media State: %s\n",
            (info->mediastate) ? "link" : "no link");
    PUTM_TO_PAGE(len, page, "Connection Status: %s\n",
            status[((info->ConStat) & 0x7)]);
    PUTM_TO_PAGE(len, page, "RX packets: %ld\n", info->stats.rx_packets);
    PUTM_TO_PAGE(len, page, "TX packets: %ld\n", info->stats.tx_packets);
    PUTM_TO_PAGE(len, page, "RX bytes: %ld\n", info->stats.rx_bytes);
    PUTM_TO_PAGE(len, page, "TX bytes: %ld\n", info->stats.tx_bytes);
    PUTM_TO_PAGE(len, page, "Signal Strength: %s\n", signal[strength]);
    PUTM_TO_PAGE(len, page, "Signal Quality: %s\n", signal[quality]);

    return len;
}

static int
ft1000NotifyProc(struct notifier_block *this, unsigned long event, void *ptr)
{
    struct net_device *dev = ptr;
    struct ft1000_info *info;
    struct proc_dir_entry *ft1000_proc_file;

    info = netdev_priv(dev);

    switch (event) {
    case NETDEV_CHANGENAME:
        remove_proc_entry(info->netdevname, info->ft1000_proc_dir);
        ft1000_proc_file = create_proc_read_entry(dev->name, 0644,
                    info->ft1000_proc_dir,
                    ft1000ReadProc, dev);
        snprintf(info->netdevname, IFNAMSIZ, "%s", dev->name);
        break;
    }

    return NOTIFY_DONE;
}

static struct notifier_block ft1000_netdev_notifier = {
    .notifier_call = ft1000NotifyProc,
};


int ft1000_init_proc(struct net_device *dev)
{
    struct ft1000_info *info;
    struct proc_dir_entry *ft1000_proc_file;
    int ret = 0;

    info = netdev_priv(dev);

    info->ft1000_proc_dir = proc_mkdir(FT1000_PROC_DIR, FTNET_PROC);
    if (info->ft1000_proc_dir == NULL) {
        printk(KERN_WARNING "Unable to create %s dir.\n",
            FT1000_PROC_DIR);
        ret = -EINVAL;
        goto fail;
    }

    ft1000_proc_file =
        create_proc_read_entry(dev->name, 0644,
            info->ft1000_proc_dir, ft1000ReadProc, dev);

    if (ft1000_proc_file == NULL) {
        printk(KERN_WARNING "Unable to create /proc entry.\n");
        ret = -EINVAL;
        goto fail_entry;
    }

    snprintf(info->netdevname, IFNAMSIZ, "%s", dev->name);

    ret = register_netdevice_notifier(&ft1000_netdev_notifier);
    if (ret)
        goto fail_notif;

    return 0;

fail_notif:
    remove_proc_entry(info->netdevname, info->ft1000_proc_dir);
fail_entry:
    remove_proc_entry(FT1000_PROC_DIR, FTNET_PROC);
fail:
    return ret;
}

void ft1000_cleanup_proc(struct ft1000_info *info)
{
    remove_proc_entry(info->netdevname, info->ft1000_proc_dir);
    remove_proc_entry(FT1000_PROC_DIR, FTNET_PROC);
    unregister_netdevice_notifier(&ft1000_netdev_notifier);
}