--- /dev/null
+/*
+ *---------------------------------------------------------------------------
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff