Add dma_set_mask(), dma_set_coherent_mask(), dma_map_sgtable(), and
dma_max_mapping_size() helpers to fix a build error when
CONFIG_HAS_DMA is not enabled.
Note that when CONFIG_HAS_DMA is enabled, they are included in both
bindings_generated.rs and bindings_helpers_generated.rs. The former
takes precedence so behavior remains unchanged in that case.
This fixes the following build error on UML:
error[E0425]: cannot find function `dma_set_mask` in crate `bindings`
--> rust/kernel/dma.rs:46:38
|
46 | to_result(unsafe { bindings::dma_set_mask(self.as_ref().as_raw(), mask.value()) })
| ^^^^^^^^^^^^ help: a function with a similar name exists: `xa_set_mark`
|
::: rust/bindings/bindings_generated.rs:24690:5
|
24690 | pub fn xa_set_mark(arg1: *mut xarray, index: ffi::c_ulong, arg2: xa_mark_t);
| ---------------------------------------------------------------------------- similarly named function `xa_set_mark` defined here
error[E0425]: cannot find function `dma_set_coherent_mask` in crate `bindings`
--> rust/kernel/dma.rs:63:38
|
63 | to_result(unsafe { bindings::dma_set_coherent_mask(self.as_ref().as_raw(), mask.value()) })
| ^^^^^^^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_coherent_ok`
|
::: rust/bindings/bindings_generated.rs:52745:5
|
52745 | pub fn dma_coherent_ok(dev: *mut device, phys: phys_addr_t, size: usize) -> bool_;
| ---------------------------------------------------------------------------------- similarly named function `dma_coherent_ok` defined here
error[E0425]: cannot find function `dma_map_sgtable` in crate `bindings`
--> rust/kernel/scatterlist.rs:212:23
|
212 | bindings::dma_map_sgtable(dev.as_raw(), sgt.as_ptr(), dir.into(), 0)
| ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_unmap_sgtable`
|
::: rust/bindings/bindings_helpers_generated.rs:1351:5
|
1351 | / pub fn dma_unmap_sgtable(
1352 | | dev: *mut device,
1353 | | sgt: *mut sg_table,
1354 | | dir: dma_data_direction,
1355 | | attrs: ffi::c_ulong,
1356 | | );
| |______- similarly named function `dma_unmap_sgtable` defined here
error[E0425]: cannot find function `dma_max_mapping_size` in crate `bindings`
--> rust/kernel/scatterlist.rs:356:52
|
356 | let max_segment = match unsafe { bindings::dma_max_mapping_size(dev.as_raw()) } {
| ^^^^^^^^^^^^^^^^^^^^ not found in `bindings`
error: aborting due to 4 previous errors
Cc: stable@vger.kernel.org # v6.17+
Fixes: 101d66828a ("rust: dma: add DMA addressing capabilities")
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251204160639.364936-1-fujita.tomonori@gmail.com
[ Use relative paths in the error splat; add 'dma' prefix. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Add dma_alloc_attrs() and dma_free_attrs() helpers to fix a build
error when CONFIG_HAS_DMA is not enabled.
Note that when CONFIG_HAS_DMA is enabled, dma_alloc_attrs() and
dma_free_attrs() are included in both bindings_generated.rs and
bindings_helpers_generated.rs. The former takes precedence so behavior
remains unchanged in that case.
This fixes the following build error on UML:
error[E0425]: cannot find function `dma_alloc_attrs` in crate `bindings`
--> rust/kernel/dma.rs:171:23
|
171 | bindings::dma_alloc_attrs(
| ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_alloc_pages`
|
::: rust/bindings/bindings_generated.rs:44568:5
|
44568 | / pub fn dma_alloc_pages(
44569 | | dev: *mut device,
44570 | | size: usize,
44571 | | dma_handle: *mut dma_addr_t,
44572 | | dir: dma_data_direction,
44573 | | gfp: gfp_t,
44574 | | ) -> *mut page;
| |___________________- similarly named function `dma_alloc_pages` defined here
error[E0425]: cannot find function `dma_free_attrs` in crate `bindings`
--> rust/kernel/dma.rs:293:23
|
293 | bindings::dma_free_attrs(
| ^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_free_pages`
|
::: rust/bindings/bindings_generated.rs:44577:5
|
44577 | / pub fn dma_free_pages(
44578 | | dev: *mut device,
44579 | | size: usize,
44580 | | page: *mut page,
44581 | | dma_handle: dma_addr_t,
44582 | | dir: dma_data_direction,
44583 | | );
| |______- similarly named function `dma_free_pages` defined here
Fixes: ad2907b4e3 ("rust: add dma coherent allocator abstraction")
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250412000507.157000-1-fujita.tomonori@gmail.com
[ Reworded for relative paths. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
