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authorMarek Szyprowski <m.szyprowski@samsung.com>2019-12-02 12:11:16 +0100
committerMatthias Brugger <mbrugger@suse.com>2020-01-29 18:30:33 +0100
commitc2a1e3dbf83f150f6d87cad243255d3f84ceca72 (patch)
tree6abfba8e731f614ce0b0e9520ddf88457dfb2219 /drivers/dfu/dfu_mmc.c
parent774f8b00b6e59aa8ee48d6aa716c94a00987eaf7 (diff)
dfu: mmc: remove file size limit for io operations
Add support for operations on files larger than CONFIG_SYS_DFU_MAX_FILE_SIZE. The buffered io mechanism is still used for aggregating io requests, so for files up to CONFIG_SYS_DFU_MAX_FILE_SIZE nothing is changed and they will be handled in a single filesystem call. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Lukasz Majewski <lukma@denx.de> Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Diffstat (limited to 'drivers/dfu/dfu_mmc.c')
-rw-r--r--drivers/dfu/dfu_mmc.c46
1 files changed, 30 insertions, 16 deletions
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index e52c02be10..0d495a785b 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -17,7 +17,7 @@
static unsigned char *dfu_file_buf;
static u64 dfu_file_buf_len;
-static long dfu_file_buf_filled;
+static u64 dfu_file_buf_offset;
static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
u64 offset, void *buf, long *len)
@@ -123,7 +123,7 @@ static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
switch (op) {
case DFU_OP_READ:
- ret = fs_read(dfu->name, (size_t)buf, offset, 0, &size);
+ ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size);
if (ret) {
puts("dfu: fs_read error!\n");
return ret;
@@ -154,25 +154,38 @@ static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
static int mmc_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
{
- if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
+ int ret = 0;
+
+ if (offset == 0) {
dfu_file_buf_len = 0;
- return -EINVAL;
+ dfu_file_buf_offset = 0;
}
/* Add to the current buffer. */
+ if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
+ *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len;
memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
dfu_file_buf_len += *len;
- return 0;
+ if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) {
+ ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset,
+ dfu_file_buf, &dfu_file_buf_len);
+ dfu_file_buf_offset += dfu_file_buf_len;
+ dfu_file_buf_len = 0;
+ }
+
+ return ret;
}
static int mmc_file_buf_write_finish(struct dfu_entity *dfu)
{
- int ret = mmc_file_op(DFU_OP_WRITE, dfu, 0, dfu_file_buf,
- &dfu_file_buf_len);
+ int ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset,
+ dfu_file_buf, &dfu_file_buf_len);
/* Now that we're done */
dfu_file_buf_len = 0;
+ dfu_file_buf_offset = 0;
+
return ret;
}
@@ -219,12 +232,9 @@ int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size)
return 0;
case DFU_FS_FAT:
case DFU_FS_EXT4:
- dfu_file_buf_filled = -1;
ret = mmc_file_op(DFU_OP_SIZE, dfu, 0, NULL, size);
if (ret < 0)
return ret;
- if (*size > CONFIG_SYS_DFU_MAX_FILE_SIZE)
- return -1;
return 0;
default:
printf("%s: Layout (%s) not (yet) supported!\n", __func__,
@@ -238,19 +248,23 @@ static int mmc_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf,
long *len)
{
int ret;
- u64 file_len;
- if (dfu_file_buf_filled == -1) {
- ret = mmc_file_op(DFU_OP_READ, dfu, 0, dfu_file_buf, &file_len);
+ if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len ||
+ offset + *len < dfu_file_buf_offset) {
+ u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE;
+
+ ret = mmc_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf,
+ &file_len);
if (ret < 0)
return ret;
- dfu_file_buf_filled = file_len;
+ dfu_file_buf_len = file_len;
+ dfu_file_buf_offset = offset;
}
- if (offset + *len > dfu_file_buf_filled)
+ if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len)
return -EINVAL;
/* Add to the current buffer. */
- memcpy(buf, dfu_file_buf + offset, *len);
+ memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len);
return 0;
}