4  * SPDX-License-Identifier: Apache-2.0
17 	const char *name;  member
24 	struct disk_data *disk = fs->backend;  in disk_access_device_size()  local
26 	return disk->sector_count * disk->sector_size;  in disk_access_device_size()
31 	struct disk_data *disk = fs->backend;  in disk_access_write_size()  local
33 	return disk->sector_size;  in disk_access_write_size()
36 static int disk_read(const char *disk, uint8_t *buf, uint32_t start, uint32_t num)  in disk_read()  argument
41 		rc = disk_access_ioctl(disk, DISK_IOCTL_CTRL_SYNC, NULL);  in disk_read()
43 			rc = disk_access_read(disk, buf, start, num);  in disk_read()
44 			LOG_DBG("disk read: (start:%d, num:%d) (ret: %d)", start, num, rc);  in disk_read()
46 	} while ((rc == -EBUSY) && (loop++ < 16));  in disk_read()
50 static int disk_write(const char *disk, const uint8_t *buf, uint32_t start, uint32_t num)  in disk_write()  argument
55 		rc = disk_access_ioctl(disk, DISK_IOCTL_CTRL_SYNC, NULL);  in disk_write()
57 			rc = disk_access_write(disk, buf, start, num);  in disk_write()
58 			LOG_DBG("disk write: (start:%d, num:%d) (ret: %d)", start, num, rc);  in disk_write()
60 	} while ((rc == -EBUSY) && (loop++ < 16));  in disk_write()
64 static int disk_prepare_range(struct disk_data *disk, uint32_t addr, uint32_t size,  in disk_prepare_range()  argument
67 	*s_start = CONFIG_EXT2_DISK_STARTING_SECTOR + addr / disk->sector_size;  in disk_prepare_range()
68 	*s_count = size / disk->sector_size;  in disk_prepare_range()
70 	LOG_DBG("addr:0x%x size:0x%x -> sector_start:%d sector_count:%d",  in disk_prepare_range()
74 	if (*s_count > UINT32_MAX - *s_start) {  in disk_prepare_range()
77 		return -ENOSPC;  in disk_prepare_range()
80 	/* Cannot read or write outside the disk. */  in disk_prepare_range()
81 	if (*s_start + *s_count > disk->sector_count) {  in disk_prepare_range()
82 		LOG_ERR("Requested sectors: %d-%d are outside of disk (num_sectors: %d)",  in disk_prepare_range()
83 			*s_start, *s_start + *s_count, disk->sector_count);  in disk_prepare_range()
84 		return -ENOSPC;  in disk_prepare_range()
92 	struct disk_data *disk = fs->backend;  in disk_access_read_block()  local
95 	rc = disk_prepare_range(disk, block * fs->block_size, fs->block_size,  in disk_access_read_block()
100 	return disk_read(disk->name, buf, sector_start, sector_count);  in disk_access_read_block()
106 	struct disk_data *disk = fs->backend;  in disk_access_write_block()  local
109 	rc = disk_prepare_range(disk, block * fs->block_size, fs->block_size,  in disk_access_write_block()
114 	return disk_write(disk->name, buf, sector_start, sector_count);  in disk_access_write_block()
120 	struct disk_data *disk = fs->backend;  in disk_access_read_superblock()  local
123 	rc = disk_prepare_range(disk, EXT2_SUPERBLOCK_OFFSET, sizeof(struct ext2_disk_superblock),  in disk_access_read_superblock()
128 	return disk_read(disk->name, (uint8_t *)sb, sector_start, sector_count);  in disk_access_read_superblock()
133 	struct disk_data *disk = fs->backend;  in disk_access_sync()  local
135 	LOG_DBG("Sync disk %s", disk->name);  in disk_access_sync()
136 	return disk_access_ioctl(disk->name, DISK_IOCTL_CTRL_SYNC, NULL);  in disk_access_sync()
152 	const char *name = (const char *)storage_dev;  in ext2_init_disk_access_backend()  local
154 	rc = disk_access_init(name);  in ext2_init_disk_access_backend()
156 		LOG_ERR("FAIL: unable to find disk %s: %d\n", name, rc);  in ext2_init_disk_access_backend()
160 	rc = disk_access_ioctl(name, DISK_IOCTL_GET_SECTOR_COUNT, &sector_count);  in ext2_init_disk_access_backend()
162 		LOG_ERR("Disk access (sector count) error: %d", rc);  in ext2_init_disk_access_backend()
166 	rc = disk_access_ioctl(name, DISK_IOCTL_GET_SECTOR_SIZE, &sector_size);  in ext2_init_disk_access_backend()
168 		LOG_ERR("Disk access (sector size) error: %d", rc);  in ext2_init_disk_access_backend()
173 		.name = storage_dev,  in ext2_init_disk_access_backend()
178 	fs->backend = &disk_data;  in ext2_init_disk_access_backend()
179 	fs->backend_ops = &disk_access_ops;  in ext2_init_disk_access_backend()