diff options
Diffstat (limited to 'nuttx/drivers/bch/bchdev_driver.c')
| -rw-r--r-- | nuttx/drivers/bch/bchdev_driver.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/nuttx/drivers/bch/bchdev_driver.c b/nuttx/drivers/bch/bchdev_driver.c deleted file mode 100644 index 262a0af46..000000000 --- a/nuttx/drivers/bch/bchdev_driver.c +++ /dev/null @@ -1,255 +0,0 @@ -/**************************************************************************** - * drivers/bch/bchdev_driver.c - * - * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Compilation Switches - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/ioctl.h> - -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <sched.h> -#include <errno.h> -#include <assert.h> -#include <debug.h> - -#include <nuttx/fs/fs.h> -#include <nuttx/fs/ioctl.h> - -#include "bch_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -static int bch_open(FAR struct file *filp); -static int bch_close(FAR struct file *filp); -static ssize_t bch_read(FAR struct file *, FAR char *, size_t); -static ssize_t bch_write(FAR struct file *, FAR const char *, size_t); -static int bch_ioctl(FAR struct file *filp, int cmd, unsigned long arg); - -/**************************************************************************** - * Public Data - ****************************************************************************/ - -const struct file_operations bch_fops = -{ - bch_open, /* open */ - bch_close, /* close */ - bch_read, /* read */ - bch_write, /* write */ - 0, /* seek */ - bch_ioctl /* ioctl */ -#ifndef CONFIG_DISABLE_POLL - , 0 /* poll */ -#endif -}; - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: bch_open - * - * Description: Open the block device - * - ****************************************************************************/ - -static int bch_open(FAR struct file *filp) -{ - FAR struct inode *inode = filp->f_inode; - FAR struct bchlib_s *bch; - - DEBUGASSERT(inode && inode->i_private); - bch = (FAR struct bchlib_s *)inode->i_private; - - /* Increment the reference count */ - - bchlib_semtake(bch); - if (bch->refs == MAX_OPENCNT) - { - return -EMFILE; - } - else - { - bch->refs++; - } - bchlib_semgive(bch); - - return OK; -} - -/**************************************************************************** - * Name: bch_close - * - * Description: close the block device - * - ****************************************************************************/ - -static int bch_close(FAR struct file *filp) -{ - FAR struct inode *inode = filp->f_inode; - FAR struct bchlib_s *bch; - int ret = OK; - - DEBUGASSERT(inode && inode->i_private); - bch = (FAR struct bchlib_s *)inode->i_private; - - /* Flush any dirty pages remaining in the cache */ - - bchlib_semtake(bch); - (void)bchlib_flushsector(bch); - - /* Decrement the reference count (I don't use bchlib_decref() because I - * want the entire close operation to be atomic wrt other driver operations. - */ - - if (bch->refs == 0) - { - ret = -EIO; - } - else - { - bch->refs--; - } - bchlib_semgive(bch); - - return ret; -} - -/**************************************************************************** - * Name:bch_read - ****************************************************************************/ - -static ssize_t bch_read(FAR struct file *filp, FAR char *buffer, size_t len) -{ - FAR struct inode *inode = filp->f_inode; - FAR struct bchlib_s *bch; - int ret; - - DEBUGASSERT(inode && inode->i_private); - bch = (FAR struct bchlib_s *)inode->i_private; - - bchlib_semtake(bch); - ret = bchlib_read(bch, buffer, filp->f_pos, len); - if (ret > 0) - { - filp->f_pos += len; - } - bchlib_semgive(bch); - return ret; -} - -/**************************************************************************** - * Name:bch_write - ****************************************************************************/ - -static ssize_t bch_write(FAR struct file *filp, FAR const char *buffer, size_t len) -{ - FAR struct inode *inode = filp->f_inode; - FAR struct bchlib_s *bch; - int ret = -EACCES; - - DEBUGASSERT(inode && inode->i_private); - bch = (FAR struct bchlib_s *)inode->i_private; - - if (!bch->readonly) - { - bchlib_semtake(bch); - ret = bchlib_write(bch, buffer, filp->f_pos, len); - if (ret > 0) - { - filp->f_pos += len; - } - bchlib_semgive(bch); - } - - return ret; -} - -/**************************************************************************** - * Name: bch_ioctl - * - * Description: Return device geometry - * - ****************************************************************************/ - -static int bch_ioctl(FAR struct file *filp, int cmd, unsigned long arg) -{ - FAR struct inode *inode = filp->f_inode; - FAR struct bchlib_s *bch; - int ret = -ENOTTY; - - DEBUGASSERT(inode && inode->i_private); - bch = (FAR struct bchlib_s *)inode->i_private; - - if (cmd == DIOC_GETPRIV) - { - FAR struct bchlib_s **bchr = (FAR struct bchlib_s **)((uintptr_t)arg); - - bchlib_semtake(bch); - if (!bchr && bch->refs < 255) - { - ret = -EINVAL; - } - else - { - bch->refs++; - *bchr = bch; - } - bchlib_semgive(bch); - } - - return ret; -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ |