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mtd_mapper: implement pagewise functions

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Implement functions to use the pagewise MTD API.
This commit is contained in:
Benjamin Valentin 2020-09-04 17:56:50 +02:00
parent c6c0f6a180
commit 43ee53a059
1 changed files with 44 additions and 0 deletions
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44
drivers/mtd_mapper/mtd_mapper.c
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@ -51,6 +51,11 @@ static uint32_t _byte_offset(mtd_mapper_region_t *region)
region->sector;
}
static uint32_t _page_offset(mtd_mapper_region_t *region)
{
return region->mtd.pages_per_sector * region->sector;
}
static int _init_target(mtd_mapper_region_t *region)
{
mtd_mapper_parent_t *parent = region->parent;
@ -100,6 +105,19 @@ static int _write(mtd_dev_t *mtd, const void *src, uint32_t addr,
return res;
}
static int _write_page(mtd_dev_t *mtd, const void *src, uint32_t page,
uint32_t offset, uint32_t count)
{
mtd_mapper_region_t *region = container_of(mtd, mtd_mapper_region_t, mtd);
_lock(region);
int res = mtd_write_page(region->parent->mtd, src,
page + _page_offset(region),
offset, count);
_unlock(region);
return res;
}
static int _read(mtd_dev_t *mtd, void *dest, uint32_t addr, uint32_t count)
{
mtd_mapper_region_t *region = container_of(mtd, mtd_mapper_region_t, mtd);
@ -114,6 +132,19 @@ static int _read(mtd_dev_t *mtd, void *dest, uint32_t addr, uint32_t count)
return res;
}
static int _read_page(mtd_dev_t *mtd, void *dest, uint32_t page,
uint32_t offset, uint32_t count)
{
mtd_mapper_region_t *region = container_of(mtd, mtd_mapper_region_t, mtd);
_lock(region);
int res = mtd_read_page(region->parent->mtd, dest,
page + _page_offset(region),
offset, count);
_unlock(region);
return res;
}
static int _erase(mtd_dev_t *mtd, uint32_t addr, uint32_t count)
{
mtd_mapper_region_t *region = container_of(mtd, mtd_mapper_region_t, mtd);
@ -128,9 +159,22 @@ static int _erase(mtd_dev_t *mtd, uint32_t addr, uint32_t count)
return res;
}
static int _erase_sector(mtd_dev_t *mtd, uint32_t sector, uint32_t count)
{
mtd_mapper_region_t *region = container_of(mtd, mtd_mapper_region_t, mtd);
_lock(region);
int res = mtd_erase_sector(region->parent->mtd, region->sector + sector, count);
_unlock(region);
return res;
}
const mtd_desc_t mtd_mapper_driver = {
.init = _init,
.read = _read,
.read_page = _read_page,
.write = _write,
.write_page = _write_page,
.erase = _erase,
.erase_sector = _erase_sector,
};