diff options
Diffstat (limited to 'drivers/staging/ft1000/ft1000-usb/ft1000_debug.c')
| -rw-r--r-- | drivers/staging/ft1000/ft1000-usb/ft1000_debug.c | 782 |
1 files changed, 782 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 000000000000..149ba59f96bf --- /dev/null +++ b/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c @@ -0,0 +1,782 @@ +//--------------------------------------------------------------------------- +// 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 +// +//--------------------------------------------------------------------------- +#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 = 0; + +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 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) ) { + DEBUG("ft1000_get_buffer: No more buffer - %d\n", numofmsgbuf); + ptr = NULL; + } + else { + numofmsgbuf--; + ptr = list_entry(bufflist->next, struct dpram_blk, list); + list_del(&ptr->list); + //DEBUG("ft1000_get_buffer: 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++; + //DEBUG("ft1000_free_buffer: 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_device *dev) +{ + struct ft1000_info *info = netdev_priv(dev->net); + int result; + int i; + struct dentry *dir, *file; + struct ft1000_debug_dirs *tmp; + + // make a new device name + sprintf(info->DeviceName, "%s%d", "FT1000_", info->CardNumber); + + DEBUG("%s: number of instance = %d\n", __func__, ft1000_flarion_cnt); + DEBUG("DeviceCreated = %x\n", info->DeviceCreated); + + if (info->DeviceCreated) + { + DEBUG("%s: \"%s\" already registered\n", __func__, info->DeviceName); + return -EIO; + } + + + // register the device + DEBUG("%s: \"%s\" debugfs device registration\n", __func__, info->DeviceName); + + tmp = kmalloc(sizeof(struct ft1000_debug_dirs), GFP_KERNEL); + if (tmp == NULL) { + result = -1; + goto fail; + } + + dir = debugfs_create_dir(info->DeviceName, 0); + 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 = info->CardNumber; + list_add(&(tmp->list), &(info->nodes.list)); + + DEBUG("%s: registered debugfs directory \"%s\"\n", __func__, info->DeviceName); + + // initialize application information + info->appcnt = 0; + for (i=0; i<MAX_NUM_APP; i++) { + info->app_info[i].nTxMsg = 0; + info->app_info[i].nRxMsg = 0; + info->app_info[i].nTxMsgReject = 0; + info->app_info[i].nRxMsgMiss = 0; + info->app_info[i].fileobject = NULL; + info->app_info[i].app_id = i+1; + info->app_info[i].DspBCMsgFlag = 0; + info->app_info[i].NumOfMsg = 0; + init_waitqueue_head(&info->app_info[i].wait_dpram_msg); + INIT_LIST_HEAD (&info->app_info[i].app_sqlist); + } + + info->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 *dev) +{ + struct ft1000_info *info = netdev_priv(dev); + int i; + struct dpram_blk *pdpram_blk; + struct dpram_blk *ptr; + struct list_head *pos, *q; + struct ft1000_debug_dirs *dir; + + DEBUG("%s called\n", __func__); + + + + if (info->DeviceCreated) + { + ft1000_flarion_cnt--; + list_for_each_safe(pos, q, &info->nodes.list) { + dir = list_entry(pos, struct ft1000_debug_dirs, list); + if (dir->int_number == info->CardNumber) { + debugfs_remove(dir->file); + debugfs_remove(dir->dent); + list_del(pos); + kfree(dir); + } + } + DEBUG("%s: unregistered device \"%s\"\n", __func__, + info->DeviceName); + + // Make sure we free any memory reserve for slow Queue + for (i=0; i<MAX_NUM_APP; i++) { + while (list_empty(&info->app_info[i].app_sqlist) == 0) { + pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list); + list_del(&pdpram_blk->list); + ft1000_free_buffer(pdpram_blk, &freercvpool); + + } + wake_up_interruptible(&info->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); + } + } + info->DeviceCreated = FALSE; + } + + +} + +//--------------------------------------------------------------------------- +// Function: ft1000_open +// +// Parameters: +// +// Description: +// +// Notes: +// +//--------------------------------------------------------------------------- +static int ft1000_open (struct inode *inode, struct file *file) +{ + struct ft1000_info *info; + struct ft1000_device *dev = (struct ft1000_device *)inode->i_private; + int i,num; + + DEBUG("%s called\n", __func__); + num = (MINOR(inode->i_rdev) & 0xf); + DEBUG("ft1000_open: minor number=%d\n", num); + + info = file->private_data = netdev_priv(dev->net); + + DEBUG("f_owner = %p number of application = %d\n", (&file->f_owner), info->appcnt ); + + // Check if maximum number of application exceeded + if (info->appcnt > MAX_NUM_APP) { + DEBUG("Maximum number of application exceeded\n"); + return -EACCES; + } + + // Search for available application info block + for (i=0; i<MAX_NUM_APP; i++) { + if ( (info->app_info[i].fileobject == NULL) ) { + break; + } + } + + // Fail due to lack of application info block + if (i == MAX_NUM_APP) { + DEBUG("Could not find an application info block\n"); + return -EACCES; + } + + info->appcnt++; + info->app_info[i].fileobject = &file->f_owner; + info->app_info[i].nTxMsg = 0; + info->app_info[i].nRxMsg = 0; + info->app_info[i].nTxMsgReject = 0; + info->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 *dev = file->private_data; + struct ft1000_info *info; + int i; + + //DEBUG("ft1000_poll_dev called\n"); + if (ft1000_flarion_cnt == 0) { + DEBUG("FT1000:ft1000_poll_dev called when ft1000_flarion_cnt is zero\n"); + return (-EBADF); + } + + info = netdev_priv(dev); + + // Search for matching file object + for (i=0; i<MAX_NUM_APP; i++) { + if ( info->app_info[i].fileobject == &file->f_owner) { + //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id); + break; + } + } + + // Could not find application info block + if (i == MAX_NUM_APP) { + DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n"); + return ( -EACCES ); + } + + if (list_empty(&info->app_info[i].app_sqlist) == 0) { + DEBUG("FT1000:ft1000_poll_dev:Message detected in slow queue\n"); + return(POLLIN | POLLRDNORM | POLLPRI); + } + + poll_wait (file, &info->app_info[i].wait_dpram_msg, wait); + //DEBUG("FT1000:ft1000_poll_dev: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_device *ft1000dev; + int result=0; + int cmd; + int i; + u16 tempword; + unsigned long flags; + struct timeval tv; + IOCTL_GET_VER get_ver_data; + 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; + + //DEBUG("ft1000_ioctl called\n"); + + if (ft1000_flarion_cnt == 0) { + DEBUG("FT1000:ft1000_ioctl called when ft1000_flarion_cnt is zero\n"); + return (-EBADF); + } + + //DEBUG("FT1000:ft1000_ioctl:command = 0x%x argument = 0x%8x\n", command, (u32)argument); + + info = file->private_data; + ft1000dev = info->pFt1000Dev; + cmd = _IOC_NR(command); + //DEBUG("FT1000:ft1000_ioctl:cmd = 0x%x\n", cmd); + + // process the command + switch (cmd) { + case IOCTL_REGISTER_CMD: + DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_REGISTER called\n"); + result = get_user(tempword, (__u16 __user*)argp); + if (result) { + 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 ( info->app_info[i].fileobject == &file->f_owner) { + info->app_info[i].DspBCMsgFlag = 1; + DEBUG("FT1000:ft1000_ioctl:Registered for broadcast messages\n"); + break; + } + } + } + break; + + case IOCTL_GET_VER_CMD: + DEBUG("FT1000:ft1000_ioctl: 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)) ) { + DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n"); + result = -EFAULT; + break; + } + + DEBUG("FT1000:ft1000_ioctl:driver version = 0x%x\n",(unsigned int)get_ver_data.drv_ver); + + break; + case IOCTL_CONNECT: + // Connect Message + DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_CONNECT\n"); + ConnectionMsg[79] = 0xfc; + CardSendCommand(ft1000dev, (unsigned short *)ConnectionMsg, 0x4c); + + break; + case IOCTL_DISCONNECT: + // Disconnect Message + DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_DISCONNECT\n"); + ConnectionMsg[79] = 0xfd; + CardSendCommand(ft1000dev, (unsigned short *)ConnectionMsg, 0x4c); + break; + case IOCTL_GET_DSP_STAT_CMD: + //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DSP_STAT called\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); + DEBUG("FT1000:ft1000_ioctl: 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); + DEBUG("FT1000:ft1000_ioctl: 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); + DEBUG("Connection Time = %d\n", (int)get_stat_data.ConTm); + if (copy_to_user(argp, &get_stat_data, sizeof(get_stat_data)) ) { + DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n"); + result = -EFAULT; + break; + } + DEBUG("ft1000_chioctl: GET_DSP_STAT succeed\n"); + break; + case IOCTL_SET_DPRAM_CMD: + { + IOCTL_DPRAM_BLK *dpram_data = NULL; + //IOCTL_DPRAM_COMMAND dpram_command; + u16 qtype; + u16 msgsz; + struct pseudo_hdr *ppseudo_hdr; + u16 *pmsg; + u16 total_len; + u16 app_index; + u16 status; + + //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_SET_DPRAM called\n"); + + + if (ft1000_flarion_cnt == 0) { + return (-EBADF); + } + + if (info->DrvMsgPend) { + return (-ENOTTY); + } + + if ( (info->DspAsicReset) || (info->fProvComplete == 0) ) { + return (-EACCES); + } + + info->fAppMsgPend = 1; + + if (info->CardReady) { + + //DEBUG("FT1000:ft1000_ioctl: try to SET_DPRAM \n"); + + // Get the length field to see how many bytes to copy + result = get_user(msgsz, (__u16 __user *)argp); + msgsz = ntohs (msgsz); + //DEBUG("FT1000:ft1000_ioctl: length of message = %d\n", msgsz); + + if (msgsz > MAX_CMD_SQSIZE) { + DEBUG("FT1000:ft1000_ioctl: 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) ) { + DEBUG("FT1000:ft1000_ChIoctl: 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 ( info->app_info[i].fileobject == &file->f_owner) { + break; + } + } + if (i==MAX_NUM_APP) { + DEBUG("FT1000: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; + //DEBUG("FT1000_ft1000_ioctl: 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); + //DEBUG("FT1000_ft1000_ioctl: 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) { + DEBUG("FT1000:ft1000_ioctl:Doorbell not available\n"); + result = -ENOTTY; + kfree(dpram_data); + break; + } + } + } + } + } + + //DEBUG("FT1000_ft1000_ioctl: 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 = info->app_info[app_index].app_id; + // Calculate new checksum + ppseudo_hdr->checksum = *pmsg++; + //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum); + for (i=1; i<7; i++) { + ppseudo_hdr->checksum ^= *pmsg++; + //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum); + } + pmsg++; + ppseudo_hdr = (struct pseudo_hdr *)pmsg; + CardSendCommand(ft1000dev,(unsigned short*)dpram_data,total_len+2); + + + info->app_info[app_index].nTxMsg++; + } + else { + result = -EINVAL; + } + } + } + } + else { + DEBUG("FT1000:ft1000_ioctl: Card not ready take messages\n"); + result = -EACCES; + } + kfree(dpram_data); + + } + break; + case IOCTL_GET_DPRAM_CMD: + { + struct dpram_blk *pdpram_blk; + IOCTL_DPRAM_BLK __user *pioctl_dpram; + int msglen; + + //DEBUG("FT1000:ft1000_ioctl: 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 ( info->app_info[i].fileobject == &file->f_owner) { + //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id); + break; + } + } + + // Could not find application info block + if (i == MAX_NUM_APP) { + DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n"); + result = -EBADF; + break; + } + + result = 0; + pioctl_dpram = argp; + if (list_empty(&info->app_info[i].app_sqlist) == 0) { + //DEBUG("FT1000:ft1000_ioctl:Message detected in slow queue\n"); + spin_lock_irqsave(&free_buff_lock, flags); + pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list); + list_del(&pdpram_blk->list); + info->app_info[i].NumOfMsg--; + //DEBUG("FT1000:ft1000_ioctl:NumOfMsg for app %d = %d\n", i, info->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); + //DEBUG("FT1000:ft1000_ioctl:msg length = %x\n", msglen); + if(copy_to_user (&pioctl_dpram->pseudohdr, pdpram_blk->pbuffer, msglen)) + { + DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n"); + result = -EFAULT; + break; + } + + ft1000_free_buffer(pdpram_blk, &freercvpool); + result = msglen; + } + //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DPRAM no message\n"); + } + break; + + default: + DEBUG("FT1000:ft1000_ioctl:unknown command: 0x%x\n", command); + result = -ENOTTY; + break; + } + info->fAppMsgPend = 0; + 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; + int i; + struct dpram_blk *pdpram_blk; + + DEBUG("ft1000_release called\n"); + + dev = file->private_data; + info = netdev_priv(dev); + + if (ft1000_flarion_cnt == 0) { + info->appcnt--; + return (-EBADF); + } + + // Search for matching file object + for (i=0; i<MAX_NUM_APP; i++) { + if ( info->app_info[i].fileobject == &file->f_owner) { + //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id); + break; + } + } + + if (i==MAX_NUM_APP) + return 0; + + while (list_empty(&info->app_info[i].app_sqlist) == 0) { + DEBUG("Remove and free memory queue up on slow queue\n"); + pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list); + list_del(&pdpram_blk->list); + ft1000_free_buffer(pdpram_blk, &freercvpool); + } + + // initialize application information + info->appcnt--; + DEBUG("ft1000_chdev:%s:appcnt = %d\n", __FUNCTION__, info->appcnt); + info->app_info[i].fileobject = NULL; + + return 0; +} + |