1 //---------------------------------------------------------------------------
2 // FT1000 driver for Flarion Flash OFDM NIC Device
4 // Copyright (C) 2006 Flarion Technologies, All rights reserved.
6 // This program is free software; you can redistribute it and/or modify it
7 // under the terms of the GNU General Public License as published by the Free
8 // Software Foundation; either version 2 of the License, or (at your option) any
9 // later version. This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 // more details. You should have received a copy of the GNU General Public
13 // License along with this program; if not, write to the
14 // Free Software Foundation, Inc., 59 Temple Place -
15 // Suite 330, Boston, MA 02111-1307, USA.
16 //---------------------------------------------------------------------------
18 // File: ft1000_chdev.c
20 // Description: Custom character device dispatch routines.
23 // 8/29/02 Whc Ported to Linux.
24 // 6/05/06 Whc Porting to Linux 2.6.9
26 //---------------------------------------------------------------------------
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/poll.h>
32 #include <linux/netdevice.h>
33 #include <linux/delay.h>
35 #include <linux/ioctl.h>
36 #include <linux/debugfs.h>
37 #include "ft1000_usb.h"
39 static int ft1000_flarion_cnt
= 0;
41 static int ft1000_open (struct inode
*inode
, struct file
*file
);
42 static unsigned int ft1000_poll_dev(struct file
*file
, poll_table
*wait
);
43 static long ft1000_ioctl(struct file
*file
, unsigned int command
,
44 unsigned long argument
);
45 static int ft1000_release (struct inode
*inode
, struct file
*file
);
47 // List to free receive command buffer pool
48 struct list_head freercvpool
;
50 // lock to arbitrate free buffer list for receive command data
51 spinlock_t free_buff_lock
;
56 // Table of entry-point routines for char device
58 static struct file_operations ft1000fops
=
60 .unlocked_ioctl
= ft1000_ioctl
,
61 .poll
= ft1000_poll_dev
,
63 .release
= ft1000_release
,
67 //---------------------------------------------------------------------------
68 // Function: ft1000_get_buffer
78 //---------------------------------------------------------------------------
79 struct dpram_blk
*ft1000_get_buffer(struct list_head
*bufflist
)
82 struct dpram_blk
*ptr
;
84 spin_lock_irqsave(&free_buff_lock
, flags
);
85 // Check if buffer is available
86 if ( list_empty(bufflist
) ) {
87 DEBUG("ft1000_get_buffer: No more buffer - %d\n", numofmsgbuf
);
92 ptr
= list_entry(bufflist
->next
, struct dpram_blk
, list
);
94 //DEBUG("ft1000_get_buffer: number of free msg buffers = %d\n", numofmsgbuf);
96 spin_unlock_irqrestore(&free_buff_lock
, flags
);
104 //---------------------------------------------------------------------------
105 // Function: ft1000_free_buffer
115 //---------------------------------------------------------------------------
116 void ft1000_free_buffer(struct dpram_blk
*pdpram_blk
, struct list_head
*plist
)
120 spin_lock_irqsave(&free_buff_lock
, flags
);
121 // Put memory back to list
122 list_add_tail(&pdpram_blk
->list
, plist
);
124 //DEBUG("ft1000_free_buffer: number of free msg buffers = %d\n", numofmsgbuf);
125 spin_unlock_irqrestore(&free_buff_lock
, flags
);
128 //---------------------------------------------------------------------------
129 // Function: ft1000_CreateDevice
131 // Parameters: dev - pointer to adapter object
133 // Returns: 0 if successful
135 // Description: Creates a private char device.
137 // Notes: Only called by init_module().
139 //---------------------------------------------------------------------------
140 int ft1000_create_dev(struct ft1000_device
*dev
)
142 struct ft1000_info
*info
= netdev_priv(dev
->net
);
145 struct dentry
*dir
, *file
;
146 struct ft1000_debug_dirs
*tmp
;
148 // make a new device name
149 sprintf(info
->DeviceName
, "%s%d", "FT1000_", info
->CardNumber
);
151 DEBUG("%s: number of instance = %d\n", __func__
, ft1000_flarion_cnt
);
152 DEBUG("DeviceCreated = %x\n", info
->DeviceCreated
);
154 if (info
->DeviceCreated
)
156 DEBUG("%s: \"%s\" already registered\n", __func__
, info
->DeviceName
);
161 // register the device
162 DEBUG("%s: \"%s\" debugfs device registration\n", __func__
, info
->DeviceName
);
164 tmp
= kmalloc(sizeof(struct ft1000_debug_dirs
), GFP_KERNEL
);
170 dir
= debugfs_create_dir(info
->DeviceName
, 0);
172 result
= PTR_ERR(dir
);
176 file
= debugfs_create_file("device", S_IRUGO
| S_IWUSR
, dir
,
179 result
= PTR_ERR(file
);
180 goto debug_file_fail
;
185 tmp
->int_number
= info
->CardNumber
;
186 list_add(&(tmp
->list
), &(info
->nodes
.list
));
188 DEBUG("%s: registered debugfs directory \"%s\"\n", __func__
, info
->DeviceName
);
190 // initialize application information
192 for (i
=0; i
<MAX_NUM_APP
; i
++) {
193 info
->app_info
[i
].nTxMsg
= 0;
194 info
->app_info
[i
].nRxMsg
= 0;
195 info
->app_info
[i
].nTxMsgReject
= 0;
196 info
->app_info
[i
].nRxMsgMiss
= 0;
197 info
->app_info
[i
].fileobject
= NULL
;
198 info
->app_info
[i
].app_id
= i
+1;
199 info
->app_info
[i
].DspBCMsgFlag
= 0;
200 info
->app_info
[i
].NumOfMsg
= 0;
201 init_waitqueue_head(&info
->app_info
[i
].wait_dpram_msg
);
202 INIT_LIST_HEAD (&info
->app_info
[i
].app_sqlist
);
205 info
->DeviceCreated
= TRUE
;
206 ft1000_flarion_cnt
++;
218 //---------------------------------------------------------------------------
219 // Function: ft1000_DestroyDeviceDEBUG
221 // Parameters: dev - pointer to adapter object
223 // Description: Destroys a private char device.
225 // Notes: Only called by cleanup_module().
227 //---------------------------------------------------------------------------
228 void ft1000_destroy_dev(struct net_device
*dev
)
230 struct ft1000_info
*info
= netdev_priv(dev
);
232 struct dpram_blk
*pdpram_blk
;
233 struct dpram_blk
*ptr
;
234 struct list_head
*pos
, *q
;
235 struct ft1000_debug_dirs
*dir
;
237 DEBUG("%s called\n", __func__
);
241 if (info
->DeviceCreated
)
243 ft1000_flarion_cnt
--;
244 list_for_each_safe(pos
, q
, &info
->nodes
.list
) {
245 dir
= list_entry(pos
, struct ft1000_debug_dirs
, list
);
246 if (dir
->int_number
== info
->CardNumber
) {
247 debugfs_remove(dir
->file
);
248 debugfs_remove(dir
->dent
);
253 DEBUG("%s: unregistered device \"%s\"\n", __func__
,
256 // Make sure we free any memory reserve for slow Queue
257 for (i
=0; i
<MAX_NUM_APP
; i
++) {
258 while (list_empty(&info
->app_info
[i
].app_sqlist
) == 0) {
259 pdpram_blk
= list_entry(info
->app_info
[i
].app_sqlist
.next
, struct dpram_blk
, list
);
260 list_del(&pdpram_blk
->list
);
261 ft1000_free_buffer(pdpram_blk
, &freercvpool
);
264 wake_up_interruptible(&info
->app_info
[i
].wait_dpram_msg
);
267 // Remove buffer allocated for receive command data
268 if (ft1000_flarion_cnt
== 0) {
269 while (list_empty(&freercvpool
) == 0) {
270 ptr
= list_entry(freercvpool
.next
, struct dpram_blk
, list
);
271 list_del(&ptr
->list
);
276 info
->DeviceCreated
= FALSE
;
282 //---------------------------------------------------------------------------
283 // Function: ft1000_open
291 //---------------------------------------------------------------------------
292 static int ft1000_open (struct inode
*inode
, struct file
*file
)
294 struct ft1000_info
*info
;
295 struct ft1000_device
*dev
= (struct ft1000_device
*)inode
->i_private
;
298 DEBUG("%s called\n", __func__
);
299 num
= (MINOR(inode
->i_rdev
) & 0xf);
300 DEBUG("ft1000_open: minor number=%d\n", num
);
302 info
= file
->private_data
= netdev_priv(dev
->net
);
304 DEBUG("f_owner = %p number of application = %d\n", (&file
->f_owner
), info
->appcnt
);
306 // Check if maximum number of application exceeded
307 if (info
->appcnt
> MAX_NUM_APP
) {
308 DEBUG("Maximum number of application exceeded\n");
312 // Search for available application info block
313 for (i
=0; i
<MAX_NUM_APP
; i
++) {
314 if ( (info
->app_info
[i
].fileobject
== NULL
) ) {
319 // Fail due to lack of application info block
320 if (i
== MAX_NUM_APP
) {
321 DEBUG("Could not find an application info block\n");
326 info
->app_info
[i
].fileobject
= &file
->f_owner
;
327 info
->app_info
[i
].nTxMsg
= 0;
328 info
->app_info
[i
].nRxMsg
= 0;
329 info
->app_info
[i
].nTxMsgReject
= 0;
330 info
->app_info
[i
].nRxMsgMiss
= 0;
332 nonseekable_open(inode
, file
);
337 //---------------------------------------------------------------------------
338 // Function: ft1000_poll_dev
346 //---------------------------------------------------------------------------
348 static unsigned int ft1000_poll_dev(struct file
*file
, poll_table
*wait
)
350 struct net_device
*dev
= file
->private_data
;
351 struct ft1000_info
*info
;
354 //DEBUG("ft1000_poll_dev called\n");
355 if (ft1000_flarion_cnt
== 0) {
356 DEBUG("FT1000:ft1000_poll_dev called when ft1000_flarion_cnt is zero\n");
360 info
= netdev_priv(dev
);
362 // Search for matching file object
363 for (i
=0; i
<MAX_NUM_APP
; i
++) {
364 if ( info
->app_info
[i
].fileobject
== &file
->f_owner
) {
365 //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
370 // Could not find application info block
371 if (i
== MAX_NUM_APP
) {
372 DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n");
376 if (list_empty(&info
->app_info
[i
].app_sqlist
) == 0) {
377 DEBUG("FT1000:ft1000_poll_dev:Message detected in slow queue\n");
378 return(POLLIN
| POLLRDNORM
| POLLPRI
);
381 poll_wait (file
, &info
->app_info
[i
].wait_dpram_msg
, wait
);
382 //DEBUG("FT1000:ft1000_poll_dev:Polling for data from DSP\n");
387 //---------------------------------------------------------------------------
388 // Function: ft1000_ioctl
396 //---------------------------------------------------------------------------
397 static long ft1000_ioctl (struct file
*file
, unsigned int command
,
398 unsigned long argument
)
400 void __user
*argp
= (void __user
*)argument
;
401 struct net_device
*dev
;
402 struct ft1000_info
*info
;
403 struct ft1000_device
*ft1000dev
;
410 IOCTL_GET_VER get_ver_data
;
411 IOCTL_GET_DSP_STAT get_stat_data
;
412 u8 ConnectionMsg
[] = {0x00,0x44,0x10,0x20,0x80,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x93,0x64,
413 0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x0a,
414 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
415 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x12,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
416 0x00,0x00,0x02,0x37,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x01,0x00,0x01,0x7f,0x00,
417 0x00,0x01,0x00,0x00};
419 unsigned short ledStat
=0;
420 unsigned short conStat
=0;
422 //DEBUG("ft1000_ioctl called\n");
424 if (ft1000_flarion_cnt
== 0) {
425 DEBUG("FT1000:ft1000_ioctl called when ft1000_flarion_cnt is zero\n");
429 //DEBUG("FT1000:ft1000_ioctl:command = 0x%x argument = 0x%8x\n", command, (u32)argument);
431 dev
= file
->private_data
;
432 info
= netdev_priv(dev
);
433 ft1000dev
= info
->pFt1000Dev
;
434 cmd
= _IOC_NR(command
);
435 //DEBUG("FT1000:ft1000_ioctl:cmd = 0x%x\n", cmd);
437 // process the command
439 case IOCTL_REGISTER_CMD
:
440 DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_REGISTER called\n");
441 result
= get_user(tempword
, (__u16 __user
*)argp
);
443 DEBUG("result = %d failed to get_user\n", result
);
446 if (tempword
== DSPBCMSGID
) {
447 // Search for matching file object
448 for (i
=0; i
<MAX_NUM_APP
; i
++) {
449 if ( info
->app_info
[i
].fileobject
== &file
->f_owner
) {
450 info
->app_info
[i
].DspBCMsgFlag
= 1;
451 DEBUG("FT1000:ft1000_ioctl:Registered for broadcast messages\n");
458 case IOCTL_GET_VER_CMD
:
459 DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_VER called\n");
461 get_ver_data
.drv_ver
= FT1000_DRV_VER
;
463 if (copy_to_user(argp
, &get_ver_data
, sizeof(get_ver_data
)) ) {
464 DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
469 DEBUG("FT1000:ft1000_ioctl:driver version = 0x%x\n",(unsigned int)get_ver_data
.drv_ver
);
474 DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_CONNECT\n");
475 ConnectionMsg
[79] = 0xfc;
476 CardSendCommand(ft1000dev
, (unsigned short *)ConnectionMsg
, 0x4c);
479 case IOCTL_DISCONNECT
:
480 // Disconnect Message
481 DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_DISCONNECT\n");
482 ConnectionMsg
[79] = 0xfd;
483 CardSendCommand(ft1000dev
, (unsigned short *)ConnectionMsg
, 0x4c);
485 case IOCTL_GET_DSP_STAT_CMD
:
486 //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DSP_STAT called\n");
487 memset(&get_stat_data
, 0, sizeof(get_stat_data
));
488 memcpy(get_stat_data
.DspVer
, info
->DspVer
, DSPVERSZ
);
489 memcpy(get_stat_data
.HwSerNum
, info
->HwSerNum
, HWSERNUMSZ
);
490 memcpy(get_stat_data
.Sku
, info
->Sku
, SKUSZ
);
491 memcpy(get_stat_data
.eui64
, info
->eui64
, EUISZ
);
493 if (info
->ProgConStat
!= 0xFF) {
494 ft1000_read_dpram16(ft1000dev
, FT1000_MAG_DSP_LED
, (u8
*)&ledStat
, FT1000_MAG_DSP_LED_INDX
);
495 get_stat_data
.LedStat
= ntohs(ledStat
);
496 DEBUG("FT1000:ft1000_ioctl: LedStat = 0x%x\n", get_stat_data
.LedStat
);
497 ft1000_read_dpram16(ft1000dev
, FT1000_MAG_DSP_CON_STATE
, (u8
*)&conStat
, FT1000_MAG_DSP_CON_STATE_INDX
);
498 get_stat_data
.ConStat
= ntohs(conStat
);
499 DEBUG("FT1000:ft1000_ioctl: ConStat = 0x%x\n", get_stat_data
.ConStat
);
502 get_stat_data
.ConStat
= 0x0f;
506 get_stat_data
.nTxPkts
= info
->stats
.tx_packets
;
507 get_stat_data
.nRxPkts
= info
->stats
.rx_packets
;
508 get_stat_data
.nTxBytes
= info
->stats
.tx_bytes
;
509 get_stat_data
.nRxBytes
= info
->stats
.rx_bytes
;
510 do_gettimeofday ( &tv
);
511 get_stat_data
.ConTm
= (u32
)(tv
.tv_sec
- info
->ConTm
);
512 DEBUG("Connection Time = %d\n", (int)get_stat_data
.ConTm
);
513 if (copy_to_user(argp
, &get_stat_data
, sizeof(get_stat_data
)) ) {
514 DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
518 DEBUG("ft1000_chioctl: GET_DSP_STAT succeed\n");
520 case IOCTL_SET_DPRAM_CMD
:
522 IOCTL_DPRAM_BLK
*dpram_data
= NULL
;
523 //IOCTL_DPRAM_COMMAND dpram_command;
526 struct pseudo_hdr
*ppseudo_hdr
;
532 //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_SET_DPRAM called\n");
535 if (ft1000_flarion_cnt
== 0) {
539 if (info
->DrvMsgPend
) {
543 if ( (info
->DspAsicReset
) || (info
->fProvComplete
== 0) ) {
547 info
->fAppMsgPend
= 1;
549 if (info
->CardReady
) {
551 //DEBUG("FT1000:ft1000_ioctl: try to SET_DPRAM \n");
553 // Get the length field to see how many bytes to copy
554 result
= get_user(msgsz
, (__u16 __user
*)argp
);
555 msgsz
= ntohs (msgsz
);
556 //DEBUG("FT1000:ft1000_ioctl: length of message = %d\n", msgsz);
558 if (msgsz
> MAX_CMD_SQSIZE
) {
559 DEBUG("FT1000:ft1000_ioctl: bad message length = %d\n", msgsz
);
565 dpram_data
= kmalloc(msgsz
+ 2, GFP_KERNEL
);
569 if ( copy_from_user(dpram_data
, argp
, msgsz
+2) ) {
570 DEBUG("FT1000:ft1000_ChIoctl: copy fault occurred\n");
574 // Check if this message came from a registered application
575 for (i
=0; i
<MAX_NUM_APP
; i
++) {
576 if ( info
->app_info
[i
].fileobject
== &file
->f_owner
) {
580 if (i
==MAX_NUM_APP
) {
581 DEBUG("FT1000:No matching application fileobject\n");
588 // Check message qtype type which is the lower byte within qos_class
589 qtype
= ntohs(dpram_data
->pseudohdr
.qos_class
) & 0xff;
590 //DEBUG("FT1000_ft1000_ioctl: qtype = %d\n", qtype);
594 // Put message into Slow Queue
595 // Only put a message into the DPRAM if msg doorbell is available
596 status
= ft1000_read_register(ft1000dev
, &tempword
, FT1000_REG_DOORBELL
);
597 //DEBUG("FT1000_ft1000_ioctl: READ REGISTER tempword=%x\n", tempword);
598 if (tempword
& FT1000_DB_DPRAM_TX
) {
599 // Suspend for 2ms and try again due to DSP doorbell busy
601 status
= ft1000_read_register(ft1000dev
, &tempword
, FT1000_REG_DOORBELL
);
602 if (tempword
& FT1000_DB_DPRAM_TX
) {
603 // Suspend for 1ms and try again due to DSP doorbell busy
605 status
= ft1000_read_register(ft1000dev
, &tempword
, FT1000_REG_DOORBELL
);
606 if (tempword
& FT1000_DB_DPRAM_TX
) {
607 status
= ft1000_read_register(ft1000dev
, &tempword
, FT1000_REG_DOORBELL
);
608 if (tempword
& FT1000_DB_DPRAM_TX
) {
609 // Suspend for 3ms and try again due to DSP doorbell busy
611 status
= ft1000_read_register(ft1000dev
, &tempword
, FT1000_REG_DOORBELL
);
612 if (tempword
& FT1000_DB_DPRAM_TX
) {
613 DEBUG("FT1000:ft1000_ioctl:Doorbell not available\n");
623 //DEBUG("FT1000_ft1000_ioctl: finished reading register\n");
625 // Make sure we are within the limits of the slow queue memory limitation
626 if ( (msgsz
< MAX_CMD_SQSIZE
) && (msgsz
> PSEUDOSZ
) ) {
627 // Need to put sequence number plus new checksum for message
628 pmsg
= (u16
*)&dpram_data
->pseudohdr
;
629 ppseudo_hdr
= (struct pseudo_hdr
*)pmsg
;
631 if (total_len
& 0x1) {
635 // Insert slow queue sequence number
636 ppseudo_hdr
->seq_num
= info
->squeseqnum
++;
637 ppseudo_hdr
->portsrc
= info
->app_info
[app_index
].app_id
;
638 // Calculate new checksum
639 ppseudo_hdr
->checksum
= *pmsg
++;
640 //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum);
641 for (i
=1; i
<7; i
++) {
642 ppseudo_hdr
->checksum
^= *pmsg
++;
643 //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum);
646 ppseudo_hdr
= (struct pseudo_hdr
*)pmsg
;
647 CardSendCommand(ft1000dev
,(unsigned short*)dpram_data
,total_len
+2);
650 info
->app_info
[app_index
].nTxMsg
++;
659 DEBUG("FT1000:ft1000_ioctl: Card not ready take messages\n");
666 case IOCTL_GET_DPRAM_CMD
:
668 struct dpram_blk
*pdpram_blk
;
669 IOCTL_DPRAM_BLK __user
*pioctl_dpram
;
672 //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DPRAM called\n");
674 if (ft1000_flarion_cnt
== 0) {
678 // Search for matching file object
679 for (i
=0; i
<MAX_NUM_APP
; i
++) {
680 if ( info
->app_info
[i
].fileobject
== &file
->f_owner
) {
681 //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
686 // Could not find application info block
687 if (i
== MAX_NUM_APP
) {
688 DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n");
695 if (list_empty(&info
->app_info
[i
].app_sqlist
) == 0) {
696 //DEBUG("FT1000:ft1000_ioctl:Message detected in slow queue\n");
697 spin_lock_irqsave(&free_buff_lock
, flags
);
698 pdpram_blk
= list_entry(info
->app_info
[i
].app_sqlist
.next
, struct dpram_blk
, list
);
699 list_del(&pdpram_blk
->list
);
700 info
->app_info
[i
].NumOfMsg
--;
701 //DEBUG("FT1000:ft1000_ioctl:NumOfMsg for app %d = %d\n", i, info->app_info[i].NumOfMsg);
702 spin_unlock_irqrestore(&free_buff_lock
, flags
);
703 msglen
= ntohs(*(u16
*)pdpram_blk
->pbuffer
) + PSEUDOSZ
;
704 result
= get_user(msglen
, &pioctl_dpram
->total_len
);
707 msglen
= htons(msglen
);
708 //DEBUG("FT1000:ft1000_ioctl:msg length = %x\n", msglen);
709 if(copy_to_user (&pioctl_dpram
->pseudohdr
, pdpram_blk
->pbuffer
, msglen
))
711 DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
716 ft1000_free_buffer(pdpram_blk
, &freercvpool
);
719 //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DPRAM no message\n");
724 DEBUG("FT1000:ft1000_ioctl:unknown command: 0x%x\n", command
);
728 info
->fAppMsgPend
= 0;
732 //---------------------------------------------------------------------------
733 // Function: ft1000_release
741 //---------------------------------------------------------------------------
742 static int ft1000_release (struct inode
*inode
, struct file
*file
)
744 struct ft1000_info
*info
;
745 struct net_device
*dev
;
747 struct dpram_blk
*pdpram_blk
;
749 DEBUG("ft1000_release called\n");
751 dev
= file
->private_data
;
752 info
= netdev_priv(dev
);
754 if (ft1000_flarion_cnt
== 0) {
759 // Search for matching file object
760 for (i
=0; i
<MAX_NUM_APP
; i
++) {
761 if ( info
->app_info
[i
].fileobject
== &file
->f_owner
) {
762 //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
770 while (list_empty(&info
->app_info
[i
].app_sqlist
) == 0) {
771 DEBUG("Remove and free memory queue up on slow queue\n");
772 pdpram_blk
= list_entry(info
->app_info
[i
].app_sqlist
.next
, struct dpram_blk
, list
);
773 list_del(&pdpram_blk
->list
);
774 ft1000_free_buffer(pdpram_blk
, &freercvpool
);
777 // initialize application information
779 DEBUG("ft1000_chdev:%s:appcnt = %d\n", __FUNCTION__
, info
->appcnt
);
780 info
->app_info
[i
].fileobject
= NULL
;