mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 02:08:38 +00:00
33cf727b16
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>
152 lines
3.2 KiB
C
152 lines
3.2 KiB
C
/*
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* Copyright (C) 2013 Henrik Nordstrom <henrik@henriknordstrom.net>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <blk.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <part.h>
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#include <os.h>
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#include <malloc.h>
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#include <sandboxblockdev.h>
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#include <asm/errno.h>
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#include <dm/device-internal.h>
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DECLARE_GLOBAL_DATA_PTR;
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static unsigned long host_block_read(struct udevice *dev,
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unsigned long start, lbaint_t blkcnt,
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void *buffer)
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{
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struct host_block_dev *host_dev = dev_get_priv(dev);
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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if (os_lseek(host_dev->fd, start * block_dev->blksz, OS_SEEK_SET) ==
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-1) {
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printf("ERROR: Invalid block %lx\n", start);
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return -1;
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}
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ssize_t len = os_read(host_dev->fd, buffer, blkcnt * block_dev->blksz);
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if (len >= 0)
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return len / block_dev->blksz;
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return -1;
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}
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static unsigned long host_block_write(struct udevice *dev,
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unsigned long start, lbaint_t blkcnt,
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const void *buffer)
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{
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struct host_block_dev *host_dev = dev_get_priv(dev);
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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if (os_lseek(host_dev->fd, start * block_dev->blksz, OS_SEEK_SET) ==
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-1) {
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printf("ERROR: Invalid block %lx\n", start);
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return -1;
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}
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ssize_t len = os_write(host_dev->fd, buffer, blkcnt * block_dev->blksz);
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if (len >= 0)
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return len / block_dev->blksz;
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return -1;
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}
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int host_dev_bind(int devnum, char *filename)
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{
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struct host_block_dev *host_dev;
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struct udevice *dev;
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char dev_name[20], *str, *fname;
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int ret, fd;
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/* Remove and unbind the old device, if any */
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ret = blk_get_device(IF_TYPE_HOST, devnum, &dev);
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if (ret == 0) {
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ret = device_remove(dev);
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if (ret)
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return ret;
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ret = device_unbind(dev);
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if (ret)
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return ret;
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} else if (ret != -ENODEV) {
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return ret;
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}
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if (!filename)
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return 0;
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snprintf(dev_name, sizeof(dev_name), "host%d", devnum);
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str = strdup(dev_name);
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if (!str)
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return -ENOMEM;
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fname = strdup(filename);
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if (!fname) {
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free(str);
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return -ENOMEM;
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}
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fd = os_open(filename, OS_O_RDWR);
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if (fd == -1) {
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printf("Failed to access host backing file '%s'\n", filename);
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ret = -ENOENT;
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goto err;
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}
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ret = blk_create_device(gd->dm_root, "sandbox_host_blk", str,
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IF_TYPE_HOST, devnum, 512,
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os_lseek(fd, 0, OS_SEEK_END), &dev);
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if (ret)
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goto err_file;
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ret = device_probe(dev);
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if (ret) {
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device_unbind(dev);
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goto err_file;
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}
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host_dev = dev_get_priv(dev);
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host_dev->fd = fd;
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host_dev->filename = fname;
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return blk_prepare_device(dev);
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err_file:
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os_close(fd);
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err:
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free(fname);
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free(str);
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return ret;
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}
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int host_get_dev_err(int devnum, struct blk_desc **blk_devp)
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{
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struct udevice *dev;
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int ret;
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ret = blk_get_device(IF_TYPE_HOST, devnum, &dev);
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if (ret)
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return ret;
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*blk_devp = dev_get_uclass_platdata(dev);
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return 0;
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}
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struct blk_desc *host_get_dev(int dev)
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{
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struct blk_desc *blk_dev;
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if (host_get_dev_err(dev, &blk_dev))
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return NULL;
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return blk_dev;
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}
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static const struct blk_ops sandbox_host_blk_ops = {
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.read = host_block_read,
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.write = host_block_write,
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};
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U_BOOT_DRIVER(sandbox_host_blk) = {
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.name = "sandbox_host_blk",
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.id = UCLASS_BLK,
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.ops = &sandbox_host_blk_ops,
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.priv_auto_alloc_size = sizeof(struct host_block_dev),
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};
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