diff options
Diffstat (limited to 'drivers/block/sandbox.c')
| -rw-r--r-- | drivers/block/sandbox.c | 166 |
1 files changed, 140 insertions, 26 deletions
diff --git a/drivers/block/sandbox.c b/drivers/block/sandbox.c index 170f0fa5bf..6d41508d5c 100644 --- a/drivers/block/sandbox.c +++ b/drivers/block/sandbox.c @@ -4,14 +4,20 @@ * SPDX-License-Identifier: GPL-2.0+ */ -#include <config.h> #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; + +#ifndef CONFIG_BLK static struct host_block_dev host_devices[CONFIG_HOST_MAX_DEVICES]; static struct host_block_dev *find_host_device(int dev) @@ -21,48 +27,130 @@ static struct host_block_dev *find_host_device(int dev) return NULL; } +#endif -static unsigned long host_block_read(block_dev_desc_t *block_dev, +#ifdef CONFIG_BLK +static unsigned long host_block_read(struct udevice *dev, unsigned long start, lbaint_t blkcnt, void *buffer) { - int dev = block_dev->dev; + struct host_block_dev *host_dev = dev_get_priv(dev); + struct blk_desc *block_dev = dev_get_uclass_platdata(dev); + +#else +static unsigned long host_block_read(struct blk_desc *block_dev, + unsigned long start, lbaint_t blkcnt, + void *buffer) +{ + int dev = block_dev->devnum; struct host_block_dev *host_dev = find_host_device(dev); if (!host_dev) return -1; - if (os_lseek(host_dev->fd, - start * host_dev->blk_dev.blksz, - OS_SEEK_SET) == -1) { - printf("ERROR: Invalid position\n"); +#endif + + 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 * host_dev->blk_dev.blksz); + ssize_t len = os_read(host_dev->fd, buffer, blkcnt * block_dev->blksz); if (len >= 0) - return len / host_dev->blk_dev.blksz; + return len / block_dev->blksz; return -1; } -static unsigned long host_block_write(block_dev_desc_t *block_dev, +#ifdef CONFIG_BLK +static unsigned long host_block_write(struct udevice *dev, unsigned long start, lbaint_t blkcnt, const void *buffer) { - int dev = block_dev->dev; + struct host_block_dev *host_dev = dev_get_priv(dev); + struct blk_desc *block_dev = dev_get_uclass_platdata(dev); +#else +static unsigned long host_block_write(struct blk_desc *block_dev, + unsigned long start, lbaint_t blkcnt, + const void *buffer) +{ + int dev = block_dev->devnum; struct host_block_dev *host_dev = find_host_device(dev); - if (os_lseek(host_dev->fd, - start * host_dev->blk_dev.blksz, - OS_SEEK_SET) == -1) { - printf("ERROR: Invalid position\n"); +#endif + + 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 * - host_dev->blk_dev.blksz); + ssize_t len = os_write(host_dev->fd, buffer, blkcnt * block_dev->blksz); if (len >= 0) - return len / host_dev->blk_dev.blksz; + return len / block_dev->blksz; return -1; } +#ifdef CONFIG_BLK +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; +} +#else int host_dev_bind(int dev, char *filename) { struct host_block_dev *host_dev = find_host_device(dev); @@ -89,23 +177,33 @@ int host_dev_bind(int dev, char *filename) return 1; } - block_dev_desc_t *blk_dev = &host_dev->blk_dev; + struct blk_desc *blk_dev = &host_dev->blk_dev; blk_dev->if_type = IF_TYPE_HOST; blk_dev->priv = host_dev; blk_dev->blksz = 512; blk_dev->lba = os_lseek(host_dev->fd, 0, OS_SEEK_END) / blk_dev->blksz; blk_dev->block_read = host_block_read; blk_dev->block_write = host_block_write; - blk_dev->dev = dev; + blk_dev->devnum = dev; blk_dev->part_type = PART_TYPE_UNKNOWN; - init_part(blk_dev); + part_init(blk_dev); return 0; } +#endif -int host_get_dev_err(int dev, block_dev_desc_t **blk_devp) +int host_get_dev_err(int devnum, struct blk_desc **blk_devp) { - struct host_block_dev *host_dev = find_host_device(dev); +#ifdef CONFIG_BLK + 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); +#else + struct host_block_dev *host_dev = find_host_device(devnum); if (!host_dev) return -ENODEV; @@ -114,15 +212,31 @@ int host_get_dev_err(int dev, block_dev_desc_t **blk_devp) return -ENOENT; *blk_devp = &host_dev->blk_dev; +#endif + return 0; } -block_dev_desc_t *host_get_dev(int dev) +struct blk_desc *host_get_dev(int dev) { - block_dev_desc_t *blk_dev; + struct blk_desc *blk_dev; if (host_get_dev_err(dev, &blk_dev)) return NULL; return blk_dev; } + +#ifdef CONFIG_BLK +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), +}; +#endif |
