diff options
| author | Fabien Dessenne <fabien.dessenne@st.com> | 2019-05-31 15:11:30 +0200 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2019-07-22 09:21:28 +0200 |
| commit | 641067fb0c64dec8b6da962eb1d9fc49a6c7b499 (patch) | |
| tree | 594af009ab9d03084047c09310018efe257cf926 /drivers | |
| parent | 0de815356474912ef5bef9a69f0327a5a93bb2c2 (diff) | |
dm: core: Introduce xxx_translate_dma_address()
Add the following functions to translate DMA address to CPU address:
- dev_translate_dma_address()
- ofnode_translate_dma_address()
- of_translate_dma_address()
- fdt_translate_dma_address()
These functions work the same way as xxx_translate_address(), with the
difference that the translation relies on the "dma-ranges" property
instead of the "ranges" property.
Add related test. Test report:
=> ut dm fdt_translation
Test: dm_test_fdt_translation: test-fdt.c
Test: dm_test_fdt_translation: test-fdt.c (flat tree)
Failures: 0
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/core/of_addr.c | 4 | ||||
| -rw-r--r-- | drivers/core/ofnode.c | 8 | ||||
| -rw-r--r-- | drivers/core/read.c | 5 |
3 files changed, 17 insertions, 0 deletions
diff --git a/drivers/core/of_addr.c b/drivers/core/of_addr.c index 1bfaaeec00..4e256d9926 100644 --- a/drivers/core/of_addr.c +++ b/drivers/core/of_addr.c @@ -318,6 +318,10 @@ u64 of_translate_address(const struct device_node *dev, const __be32 *in_addr) return __of_translate_address(dev, in_addr, "ranges"); } +u64 of_translate_dma_address(const struct device_node *dev, const __be32 *in_addr) +{ + return __of_translate_address(dev, in_addr, "dma-ranges"); +} static int __of_address_to_resource(const struct device_node *dev, const __be32 *addrp, u64 size, unsigned int flags, diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index c72c6e2673..179a6447dc 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -770,6 +770,14 @@ u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr) return fdt_translate_address(gd->fdt_blob, ofnode_to_offset(node), in_addr); } +u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr) +{ + if (ofnode_is_np(node)) + return of_translate_dma_address(ofnode_to_np(node), in_addr); + else + return fdt_translate_dma_address(gd->fdt_blob, ofnode_to_offset(node), in_addr); +} + int ofnode_device_is_compatible(ofnode node, const char *compat) { if (ofnode_is_np(node)) diff --git a/drivers/core/read.c b/drivers/core/read.c index 6bda077a34..1a044b05e8 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -265,6 +265,11 @@ u64 dev_translate_address(struct udevice *dev, const fdt32_t *in_addr) return ofnode_translate_address(dev_ofnode(dev), in_addr); } +u64 dev_translate_dma_address(struct udevice *dev, const fdt32_t *in_addr) +{ + return ofnode_translate_dma_address(dev_ofnode(dev), in_addr); +} + int dev_read_alias_highest_id(const char *stem) { if (of_live_active()) |