mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-24 02:48:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Driver model is used for host device block devices now, so we don't need the old code. Remove it. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@nvidia.com>
153 lines
3.2 KiB
C
153 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2013 Henrik Nordstrom <henrik@henriknordstrom.net>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <blk.h>
|
|
#include <dm.h>
|
|
#include <fdtdec.h>
|
|
#include <part.h>
|
|
#include <os.h>
|
|
#include <malloc.h>
|
|
#include <sandboxblockdev.h>
|
|
#include <asm/errno.h>
|
|
#include <dm/device-internal.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static unsigned long host_block_read(struct udevice *dev,
|
|
unsigned long start, lbaint_t blkcnt,
|
|
void *buffer)
|
|
{
|
|
struct host_block_dev *host_dev = dev_get_priv(dev);
|
|
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
|
|
|
|
if (os_lseek(host_dev->fd, start * block_dev->blksz, OS_SEEK_SET) ==
|
|
-1) {
|
|
printf("ERROR: Invalid block %lx\n", start);
|
|
return -1;
|
|
}
|
|
ssize_t len = os_read(host_dev->fd, buffer, blkcnt * block_dev->blksz);
|
|
if (len >= 0)
|
|
return len / block_dev->blksz;
|
|
return -1;
|
|
}
|
|
|
|
static unsigned long host_block_write(struct udevice *dev,
|
|
unsigned long start, lbaint_t blkcnt,
|
|
const void *buffer)
|
|
{
|
|
struct host_block_dev *host_dev = dev_get_priv(dev);
|
|
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
|
|
|
|
if (os_lseek(host_dev->fd, start * block_dev->blksz, OS_SEEK_SET) ==
|
|
-1) {
|
|
printf("ERROR: Invalid block %lx\n", start);
|
|
return -1;
|
|
}
|
|
ssize_t len = os_write(host_dev->fd, buffer, blkcnt * block_dev->blksz);
|
|
if (len >= 0)
|
|
return len / block_dev->blksz;
|
|
return -1;
|
|
}
|
|
|
|
int host_dev_bind(int devnum, char *filename)
|
|
{
|
|
struct host_block_dev *host_dev;
|
|
struct udevice *dev;
|
|
char dev_name[20], *str, *fname;
|
|
int ret, fd;
|
|
|
|
/* Remove and unbind the old device, if any */
|
|
ret = blk_get_device(IF_TYPE_HOST, devnum, &dev);
|
|
if (ret == 0) {
|
|
ret = device_remove(dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = device_unbind(dev);
|
|
if (ret)
|
|
return ret;
|
|
} else if (ret != -ENODEV) {
|
|
return ret;
|
|
}
|
|
|
|
if (!filename)
|
|
return 0;
|
|
|
|
snprintf(dev_name, sizeof(dev_name), "host%d", devnum);
|
|
str = strdup(dev_name);
|
|
if (!str)
|
|
return -ENOMEM;
|
|
fname = strdup(filename);
|
|
if (!fname) {
|
|
free(str);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fd = os_open(filename, OS_O_RDWR);
|
|
if (fd == -1) {
|
|
printf("Failed to access host backing file '%s'\n", filename);
|
|
ret = -ENOENT;
|
|
goto err;
|
|
}
|
|
ret = blk_create_device(gd->dm_root, "sandbox_host_blk", str,
|
|
IF_TYPE_HOST, devnum, 512,
|
|
os_lseek(fd, 0, OS_SEEK_END), &dev);
|
|
if (ret)
|
|
goto err_file;
|
|
ret = device_probe(dev);
|
|
if (ret) {
|
|
device_unbind(dev);
|
|
goto err_file;
|
|
}
|
|
|
|
host_dev = dev_get_priv(dev);
|
|
host_dev->fd = fd;
|
|
host_dev->filename = fname;
|
|
|
|
return blk_prepare_device(dev);
|
|
err_file:
|
|
os_close(fd);
|
|
err:
|
|
free(fname);
|
|
free(str);
|
|
return ret;
|
|
}
|
|
|
|
int host_get_dev_err(int devnum, struct blk_desc **blk_devp)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
ret = blk_get_device(IF_TYPE_HOST, devnum, &dev);
|
|
if (ret)
|
|
return ret;
|
|
*blk_devp = dev_get_uclass_platdata(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct blk_desc *host_get_dev(int dev)
|
|
{
|
|
struct blk_desc *blk_dev;
|
|
|
|
if (host_get_dev_err(dev, &blk_dev))
|
|
return NULL;
|
|
|
|
return blk_dev;
|
|
}
|
|
|
|
static const struct blk_ops sandbox_host_blk_ops = {
|
|
.read = host_block_read,
|
|
.write = host_block_write,
|
|
};
|
|
|
|
U_BOOT_DRIVER(sandbox_host_blk) = {
|
|
.name = "sandbox_host_blk",
|
|
.id = UCLASS_BLK,
|
|
.ops = &sandbox_host_blk_ops,
|
|
.priv_auto_alloc_size = sizeof(struct host_block_dev),
|
|
};
|