diff options
Diffstat (limited to 'drivers/staging/ft1000/ft1000-usb/ft1000_debug.c')
| -rw-r--r-- | drivers/staging/ft1000/ft1000-usb/ft1000_debug.c | 779 |
1 files changed, 779 insertions, 0 deletions
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c b/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c new file mode 100644 index 000000000..2d758fb26 --- /dev/null +++ b/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c @@ -0,0 +1,779 @@ +/* + *--------------------------------------------------------------------------- + * FT1000 driver for Flarion Flash OFDM NIC Device + * + * Copyright (C) 2006 Flarion Technologies, All rights reserved. + * + * 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. 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. + *--------------------------------------------------------------------------- + * + * File: ft1000_chdev.c + * + * Description: Custom character device dispatch routines. + * + * History: + * 8/29/02 Whc Ported to Linux. + * 6/05/06 Whc Porting to Linux 2.6.9 + * + *--------------------------------------------------------------------------- + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/errno.h> +#include <linux/poll.h> +#include <linux/netdevice.h> +#include <linux/delay.h> + +#include <linux/ioctl.h> +#include <linux/debugfs.h> +#include "ft1000_usb.h" + +static int ft1000_flarion_cnt; + +static int ft1000_open(struct inode *inode, struct file *file); +static unsigned int ft1000_poll_dev(struct file *file, poll_table *wait); +static long ft1000_ioctl(struct file *file, unsigned int command, + unsigned long argument); +static int ft1000_release(struct inode *inode, struct file *file); + +/* List to free receive command buffer pool */ +struct list_head freercvpool; + +/* lock to arbitrate free buffer list for receive command data */ +spinlock_t free_buff_lock; + +int numofmsgbuf = 0; + +/* + * Table of entry-point routines for char device + */ +static const struct file_operations ft1000fops = { + .unlocked_ioctl = ft1000_ioctl, + .poll = ft1000_poll_dev, + .open = ft1000_open, + .release = ft1000_release, + .llseek = no_llseek, +}; + +/* + --------------------------------------------------------------------------- + * Function: ft1000_get_buffer + * + * Parameters: + * + * Returns: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ +struct dpram_blk *ft1000_get_buffer(struct list_head *bufflist) +{ + unsigned long flags; + struct dpram_blk *ptr; + + spin_lock_irqsave(&free_buff_lock, flags); + /* Check if buffer is available */ + if (list_empty(bufflist)) { + pr_debug("No more buffer - %d\n", numofmsgbuf); + ptr = NULL; + } else { + numofmsgbuf--; + ptr = list_entry(bufflist->next, struct dpram_blk, list); + list_del(&ptr->list); + /* pr_debug("number of free msg buffers = %d\n", numofmsgbuf); */ + } + spin_unlock_irqrestore(&free_buff_lock, flags); + + return ptr; +} + + + + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_free_buffer + * + * Parameters: + * + * Returns: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ +void ft1000_free_buffer(struct dpram_blk *pdpram_blk, struct list_head *plist) +{ + unsigned long flags; + + spin_lock_irqsave(&free_buff_lock, flags); + /* Put memory back to list */ + list_add_tail(&pdpram_blk->list, plist); + numofmsgbuf++; + /*pr_debug("number of free msg buffers = %d\n", numofmsgbuf); */ + spin_unlock_irqrestore(&free_buff_lock, flags); +} + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_CreateDevice + * + * Parameters: dev - pointer to adapter object + * + * Returns: 0 if successful + * + * Description: Creates a private char device. + * + * Notes: Only called by init_module(). + * + *--------------------------------------------------------------------------- + */ +int ft1000_create_dev(struct ft1000_usb *dev) +{ + int result; + int i; + struct dentry *dir, *file; + struct ft1000_debug_dirs *tmp; + + /* make a new device name */ + sprintf(dev->DeviceName, "%s%d", "FT1000_", dev->CardNumber); + + pr_debug("number of instance = %d\n", ft1000_flarion_cnt); + pr_debug("DeviceCreated = %x\n", dev->DeviceCreated); + + if (dev->DeviceCreated) { + pr_debug("\"%s\" already registered\n", dev->DeviceName); + return -EIO; + } + + + /* register the device */ + pr_debug("\"%s\" debugfs device registration\n", dev->DeviceName); + + tmp = kmalloc(sizeof(struct ft1000_debug_dirs), GFP_KERNEL); + if (tmp == NULL) { + result = -1; + goto fail; + } + + dir = debugfs_create_dir(dev->DeviceName, NULL); + if (IS_ERR(dir)) { + result = PTR_ERR(dir); + goto debug_dir_fail; + } + + file = debugfs_create_file("device", S_IRUGO | S_IWUSR, dir, + dev, &ft1000fops); + if (IS_ERR(file)) { + result = PTR_ERR(file); + goto debug_file_fail; + } + + tmp->dent = dir; + tmp->file = file; + tmp->int_number = dev->CardNumber; + list_add(&tmp->list, &dev->nodes.list); + + pr_debug("registered debugfs directory \"%s\"\n", dev->DeviceName); + + /* initialize application information */ + dev->appcnt = 0; + for (i = 0; i < MAX_NUM_APP; i++) { + dev->app_info[i].nTxMsg = 0; + dev->app_info[i].nRxMsg = 0; + dev->app_info[i].nTxMsgReject = 0; + dev->app_info[i].nRxMsgMiss = 0; + dev->app_info[i].fileobject = NULL; + dev->app_info[i].app_id = i+1; + dev->app_info[i].DspBCMsgFlag = 0; + dev->app_info[i].NumOfMsg = 0; + init_waitqueue_head(&dev->app_info[i].wait_dpram_msg); + INIT_LIST_HEAD(&dev->app_info[i].app_sqlist); + } + + dev->DeviceCreated = TRUE; + ft1000_flarion_cnt++; + + return 0; + +debug_file_fail: + debugfs_remove(dir); +debug_dir_fail: + kfree(tmp); +fail: + return result; +} + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_DestroyDeviceDEBUG + * + * Parameters: dev - pointer to adapter object + * + * Description: Destroys a private char device. + * + * Notes: Only called by cleanup_module(). + * + *--------------------------------------------------------------------------- + */ +void ft1000_destroy_dev(struct net_device *netdev) +{ + struct ft1000_info *info = netdev_priv(netdev); + struct ft1000_usb *dev = info->priv; + int i; + struct dpram_blk *pdpram_blk; + struct dpram_blk *ptr; + struct list_head *pos, *q; + struct ft1000_debug_dirs *dir; + + if (dev->DeviceCreated) { + ft1000_flarion_cnt--; + list_for_each_safe(pos, q, &dev->nodes.list) { + dir = list_entry(pos, struct ft1000_debug_dirs, list); + if (dir->int_number == dev->CardNumber) { + debugfs_remove(dir->file); + debugfs_remove(dir->dent); + list_del(pos); + kfree(dir); + } + } + pr_debug("unregistered device \"%s\"\n", dev->DeviceName); + + /* Make sure we free any memory reserve for slow Queue */ + for (i = 0; i < MAX_NUM_APP; i++) { + while (list_empty(&dev->app_info[i].app_sqlist) == 0) { + pdpram_blk = list_entry(dev->app_info[i].app_sqlist.next, struct dpram_blk, list); + list_del(&pdpram_blk->list); + ft1000_free_buffer(pdpram_blk, &freercvpool); + + } + wake_up_interruptible(&dev->app_info[i].wait_dpram_msg); + } + + /* Remove buffer allocated for receive command data */ + if (ft1000_flarion_cnt == 0) { + while (list_empty(&freercvpool) == 0) { + ptr = list_entry(freercvpool.next, struct dpram_blk, list); + list_del(&ptr->list); + kfree(ptr->pbuffer); + kfree(ptr); + } + } + dev->DeviceCreated = FALSE; + } + + +} + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_open + * + * Parameters: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ +static int ft1000_open(struct inode *inode, struct file *file) +{ + struct ft1000_info *info; + struct ft1000_usb *dev = (struct ft1000_usb *)inode->i_private; + int i, num; + + num = MINOR(inode->i_rdev) & 0xf; + pr_debug("minor number=%d\n", num); + + info = file->private_data = netdev_priv(dev->net); + + pr_debug("f_owner = %p number of application = %d\n", + &file->f_owner, dev->appcnt); + + /* Check if maximum number of application exceeded */ + if (dev->appcnt > MAX_NUM_APP) { + pr_debug("Maximum number of application exceeded\n"); + return -EACCES; + } + + /* Search for available application info block */ + for (i = 0; i < MAX_NUM_APP; i++) { + if ((dev->app_info[i].fileobject == NULL)) + break; + } + + /* Fail due to lack of application info block */ + if (i == MAX_NUM_APP) { + pr_debug("Could not find an application info block\n"); + return -EACCES; + } + + dev->appcnt++; + dev->app_info[i].fileobject = &file->f_owner; + dev->app_info[i].nTxMsg = 0; + dev->app_info[i].nRxMsg = 0; + dev->app_info[i].nTxMsgReject = 0; + dev->app_info[i].nRxMsgMiss = 0; + + nonseekable_open(inode, file); + return 0; +} + + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_poll_dev + * + * Parameters: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ + +static unsigned int ft1000_poll_dev(struct file *file, poll_table *wait) +{ + struct net_device *netdev = file->private_data; + struct ft1000_info *info = netdev_priv(netdev); + struct ft1000_usb *dev = info->priv; + int i; + + if (ft1000_flarion_cnt == 0) { + pr_debug("called with ft1000_flarion_cnt value zero\n"); + return -EBADF; + } + + /* Search for matching file object */ + for (i = 0; i < MAX_NUM_APP; i++) { + if (dev->app_info[i].fileobject == &file->f_owner) { + /* pr_debug("Message is for AppId = %d\n", dev->app_info[i].app_id); */ + break; + } + } + + /* Could not find application info block */ + if (i == MAX_NUM_APP) { + pr_debug("Could not find application info block\n"); + return -EACCES; + } + + if (list_empty(&dev->app_info[i].app_sqlist) == 0) { + pr_debug("Message detected in slow queue\n"); + return(POLLIN | POLLRDNORM | POLLPRI); + } + + poll_wait(file, &dev->app_info[i].wait_dpram_msg, wait); + /* pr_debug("Polling for data from DSP\n"); */ + + return 0; +} + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_ioctl + * + * Parameters: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ +static long ft1000_ioctl(struct file *file, unsigned int command, + unsigned long argument) +{ + void __user *argp = (void __user *)argument; + struct ft1000_info *info; + struct ft1000_usb *ft1000dev; + int result = 0; + int cmd; + int i; + u16 tempword; + unsigned long flags; + struct timeval tv; + struct IOCTL_GET_VER get_ver_data; + struct IOCTL_GET_DSP_STAT get_stat_data; + u8 ConnectionMsg[] = {0x00, 0x44, 0x10, 0x20, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x93, 0x64, + 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x0a, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x02, 0x37, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x7f, 0x00, + 0x00, 0x01, 0x00, 0x00}; + + unsigned short ledStat = 0; + unsigned short conStat = 0; + + if (ft1000_flarion_cnt == 0) { + pr_debug("called with ft1000_flarion_cnt of zero\n"); + return -EBADF; + } + + /* pr_debug("command = 0x%x argument = 0x%8x\n", command, (u32)argument); */ + + info = file->private_data; + ft1000dev = info->priv; + cmd = _IOC_NR(command); + /* pr_debug("cmd = 0x%x\n", cmd); */ + + /* process the command */ + switch (cmd) { + case IOCTL_REGISTER_CMD: + pr_debug("IOCTL_FT1000_REGISTER called\n"); + result = get_user(tempword, (__u16 __user *)argp); + if (result) { + pr_debug("result = %d failed to get_user\n", result); + break; + } + if (tempword == DSPBCMSGID) { + /* Search for matching file object */ + for (i = 0; i < MAX_NUM_APP; i++) { + if (ft1000dev->app_info[i].fileobject == &file->f_owner) { + ft1000dev->app_info[i].DspBCMsgFlag = 1; + pr_debug("Registered for broadcast messages\n"); + break; + } + } + } + break; + + case IOCTL_GET_VER_CMD: + pr_debug("IOCTL_FT1000_GET_VER called\n"); + + get_ver_data.drv_ver = FT1000_DRV_VER; + + if (copy_to_user(argp, &get_ver_data, sizeof(get_ver_data))) { + pr_debug("copy fault occurred\n"); + result = -EFAULT; + break; + } + + pr_debug("driver version = 0x%x\n", + (unsigned int)get_ver_data.drv_ver); + + break; + case IOCTL_CONNECT: + /* Connect Message */ + pr_debug("IOCTL_FT1000_CONNECT\n"); + ConnectionMsg[79] = 0xfc; + result = card_send_command(ft1000dev, ConnectionMsg, 0x4c); + + break; + case IOCTL_DISCONNECT: + /* Disconnect Message */ + pr_debug("IOCTL_FT1000_DISCONNECT\n"); + ConnectionMsg[79] = 0xfd; + result = card_send_command(ft1000dev, ConnectionMsg, 0x4c); + break; + case IOCTL_GET_DSP_STAT_CMD: + /* pr_debug("IOCTL_FT1000_GET_DSP_STAT\n"); */ + memset(&get_stat_data, 0, sizeof(get_stat_data)); + memcpy(get_stat_data.DspVer, info->DspVer, DSPVERSZ); + memcpy(get_stat_data.HwSerNum, info->HwSerNum, HWSERNUMSZ); + memcpy(get_stat_data.Sku, info->Sku, SKUSZ); + memcpy(get_stat_data.eui64, info->eui64, EUISZ); + + if (info->ProgConStat != 0xFF) { + ft1000_read_dpram16(ft1000dev, FT1000_MAG_DSP_LED, (u8 *)&ledStat, FT1000_MAG_DSP_LED_INDX); + get_stat_data.LedStat = ntohs(ledStat); + pr_debug("LedStat = 0x%x\n", get_stat_data.LedStat); + ft1000_read_dpram16(ft1000dev, FT1000_MAG_DSP_CON_STATE, (u8 *)&conStat, FT1000_MAG_DSP_CON_STATE_INDX); + get_stat_data.ConStat = ntohs(conStat); + pr_debug("ConStat = 0x%x\n", get_stat_data.ConStat); + } else { + get_stat_data.ConStat = 0x0f; + } + + + get_stat_data.nTxPkts = info->stats.tx_packets; + get_stat_data.nRxPkts = info->stats.rx_packets; + get_stat_data.nTxBytes = info->stats.tx_bytes; + get_stat_data.nRxBytes = info->stats.rx_bytes; + do_gettimeofday(&tv); + get_stat_data.ConTm = (u32)(tv.tv_sec - info->ConTm); + pr_debug("Connection Time = %d\n", (int)get_stat_data.ConTm); + if (copy_to_user(argp, &get_stat_data, sizeof(get_stat_data))) { + pr_debug("copy fault occurred\n"); + result = -EFAULT; + break; + } + pr_debug("GET_DSP_STAT succeed\n"); + break; + case IOCTL_SET_DPRAM_CMD: + { + struct IOCTL_DPRAM_BLK *dpram_data = NULL; + /* struct IOCTL_DPRAM_COMMAND dpram_command; */ + u16 qtype; + u16 msgsz; + struct pseudo_hdr *ppseudo_hdr; + u16 *pmsg; + u16 total_len; + u16 app_index; + u16 status; + + /* pr_debug("IOCTL_FT1000_SET_DPRAM called\n");*/ + + + if (ft1000_flarion_cnt == 0) + return -EBADF; + + if (ft1000dev->DrvMsgPend) + return -ENOTTY; + + if (ft1000dev->fProvComplete == 0) + return -EACCES; + + ft1000dev->fAppMsgPend = true; + + if (info->CardReady) { + + /* pr_debug("try to SET_DPRAM\n"); */ + + /* Get the length field to see how many bytes to copy */ + result = get_user(msgsz, (__u16 __user *)argp); + if (result) + break; + msgsz = ntohs(msgsz); + /* pr_debug("length of message = %d\n", msgsz); */ + + if (msgsz > MAX_CMD_SQSIZE) { + pr_debug("bad message length = %d\n", msgsz); + result = -EINVAL; + break; + } + + result = -ENOMEM; + dpram_data = kmalloc(msgsz + 2, GFP_KERNEL); + if (!dpram_data) + break; + + if (copy_from_user(dpram_data, argp, msgsz+2)) { + pr_debug("copy fault occurred\n"); + result = -EFAULT; + } else { + /* Check if this message came from a registered application */ + for (i = 0; i < MAX_NUM_APP; i++) { + if (ft1000dev->app_info[i].fileobject == &file->f_owner) + break; + } + if (i == MAX_NUM_APP) { + pr_debug("No matching application fileobject\n"); + result = -EINVAL; + kfree(dpram_data); + break; + } + app_index = i; + + /* Check message qtype type which is the lower byte within qos_class */ + qtype = ntohs(dpram_data->pseudohdr.qos_class) & 0xff; + /* pr_debug("qtype = %d\n", qtype); */ + if (qtype) { + } else { + /* Put message into Slow Queue */ + /* Only put a message into the DPRAM if msg doorbell is available */ + status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL); + /* pr_debug("READ REGISTER tempword=%x\n", tempword); */ + if (tempword & FT1000_DB_DPRAM_TX) { + /* Suspend for 2ms and try again due to DSP doorbell busy */ + mdelay(2); + status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL); + if (tempword & FT1000_DB_DPRAM_TX) { + /* Suspend for 1ms and try again due to DSP doorbell busy */ + mdelay(1); + status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL); + if (tempword & FT1000_DB_DPRAM_TX) { + status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL); + if (tempword & FT1000_DB_DPRAM_TX) { + /* Suspend for 3ms and try again due to DSP doorbell busy */ + mdelay(3); + status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL); + if (tempword & FT1000_DB_DPRAM_TX) { + pr_debug("Doorbell not available\n"); + result = -ENOTTY; + kfree(dpram_data); + break; + } + } + } + } + } + + /*pr_debug("finished reading register\n"); */ + + /* Make sure we are within the limits of the slow queue memory limitation */ + if ((msgsz < MAX_CMD_SQSIZE) && (msgsz > PSEUDOSZ)) { + /* Need to put sequence number plus new checksum for message */ + pmsg = (u16 *)&dpram_data->pseudohdr; + ppseudo_hdr = (struct pseudo_hdr *)pmsg; + total_len = msgsz+2; + if (total_len & 0x1) + total_len++; + + /* Insert slow queue sequence number */ + ppseudo_hdr->seq_num = info->squeseqnum++; + ppseudo_hdr->portsrc = ft1000dev->app_info[app_index].app_id; + /* Calculate new checksum */ + ppseudo_hdr->checksum = *pmsg++; + /* pr_debug("checksum = 0x%x\n", ppseudo_hdr->checksum); */ + for (i = 1; i < 7; i++) { + ppseudo_hdr->checksum ^= *pmsg++; + /* pr_debug("checksum = 0x%x\n", ppseudo_hdr->checksum); */ + } + pmsg++; + ppseudo_hdr = (struct pseudo_hdr *)pmsg; + result = card_send_command(ft1000dev, dpram_data, total_len+2); + + + ft1000dev->app_info[app_index].nTxMsg++; + } else { + result = -EINVAL; + } + } + } + } else { + pr_debug("Card not ready take messages\n"); + result = -EACCES; + } + kfree(dpram_data); + + } + break; + case IOCTL_GET_DPRAM_CMD: + { + struct dpram_blk *pdpram_blk; + struct IOCTL_DPRAM_BLK __user *pioctl_dpram; + int msglen; + + /* pr_debug("IOCTL_FT1000_GET_DPRAM called\n"); */ + + if (ft1000_flarion_cnt == 0) + return -EBADF; + + /* Search for matching file object */ + for (i = 0; i < MAX_NUM_APP; i++) { + if (ft1000dev->app_info[i].fileobject == &file->f_owner) { + /*pr_debug("Message is for AppId = %d\n", ft1000dev->app_info[i].app_id); */ + break; + } + } + + /* Could not find application info block */ + if (i == MAX_NUM_APP) { + pr_debug("Could not find application info block\n"); + result = -EBADF; + break; + } + + result = 0; + pioctl_dpram = argp; + if (list_empty(&ft1000dev->app_info[i].app_sqlist) == 0) { + /* pr_debug("Message detected in slow queue\n"); */ + spin_lock_irqsave(&free_buff_lock, flags); + pdpram_blk = list_entry(ft1000dev->app_info[i].app_sqlist.next, struct dpram_blk, list); + list_del(&pdpram_blk->list); + ft1000dev->app_info[i].NumOfMsg--; + /* pr_debug("NumOfMsg for app %d = %d\n", i, ft1000dev->app_info[i].NumOfMsg); */ + spin_unlock_irqrestore(&free_buff_lock, flags); + msglen = ntohs(*(u16 *)pdpram_blk->pbuffer) + PSEUDOSZ; + result = get_user(msglen, &pioctl_dpram->total_len); + if (result) + break; + msglen = htons(msglen); + /* pr_debug("msg length = %x\n", msglen); */ + if (copy_to_user(&pioctl_dpram->pseudohdr, pdpram_blk->pbuffer, msglen)) { + pr_debug("copy fault occurred\n"); + result = -EFAULT; + break; + } + + ft1000_free_buffer(pdpram_blk, &freercvpool); + result = msglen; + } + /* pr_debug("IOCTL_FT1000_GET_DPRAM no message\n"); */ + } + break; + + default: + pr_debug("unknown command: 0x%x\n", command); + result = -ENOTTY; + break; + } + ft1000dev->fAppMsgPend = false; + return result; +} + +/* + *--------------------------------------------------------------------------- + * Function: ft1000_release + * + * Parameters: + * + * Description: + * + * Notes: + * + *--------------------------------------------------------------------------- + */ +static int ft1000_release(struct inode *inode, struct file *file) +{ + struct ft1000_info *info; + struct net_device *dev; + struct ft1000_usb *ft1000dev; + int i; + struct dpram_blk *pdpram_blk; + struct dpram_blk *tmp; + + dev = file->private_data; + info = netdev_priv(dev); + ft1000dev = info->priv; + + if (ft1000_flarion_cnt == 0) { + ft1000dev->appcnt--; + return -EBADF; + } + + /* Search for matching file object */ + for (i = 0; i < MAX_NUM_APP; i++) { + if (ft1000dev->app_info[i].fileobject == &file->f_owner) { + /* pr_debug("Message is for AppId = %d\n", ft1000dev->app_info[i].app_id); */ + break; + } + } + + if (i == MAX_NUM_APP) + return 0; + + list_for_each_entry_safe(pdpram_blk, tmp, &ft1000dev->app_info[i].app_sqlist, list) { + pr_debug("Remove and free memory queue up on slow queue\n"); + list_del(&pdpram_blk->list); + ft1000_free_buffer(pdpram_blk, &freercvpool); + } + + /* initialize application information */ + ft1000dev->appcnt--; + pr_debug("appcnt = %d\n", ft1000dev->appcnt); + ft1000dev->app_info[i].fileobject = NULL; + + return 0; +} |