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drm/amdgpu: Expand kernel-doc in amdgpu_ring

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Expand the kernel-doc about amdgpu_ring and add some tiny improvements.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rodrigo Siqueira 2025-11-18 17:45:50 -07:00 committed by Alex Deucher
parent e06d194201
commit b9befc9a21
2 changed files with 10 additions and 3 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View File

@ -76,8 +76,12 @@ unsigned int amdgpu_ring_max_ibs(enum amdgpu_ring_type type)
* @ring: amdgpu_ring structure holding ring information
* @ndw: number of dwords to allocate in the ring buffer
*
* Allocate @ndw dwords in the ring buffer (all asics).
* Returns 0 on success, error on failure.
* Allocate @ndw dwords in the ring buffer. The number of dwords should be the
* sum of all commands written to the ring.
*
* Returns:
* 0 on success, otherwise -ENOMEM if it tries to allocate more than the
* maximum dword allowed for one submission.
*/
int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned int ndw)
{
@ -123,7 +127,8 @@ static void amdgpu_ring_alloc_reemit(struct amdgpu_ring *ring, unsigned int ndw)
ring->funcs->begin_use(ring);
}
/** amdgpu_ring_insert_nop - insert NOP packets
/**
* amdgpu_ring_insert_nop - insert NOP packets
*
* @ring: amdgpu_ring structure holding ring information
* @count: the number of NOP packets to insert

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View File

@ -62,6 +62,8 @@ enum amdgpu_ring_priority_level {
#define AMDGPU_FENCE_FLAG_64BIT (1 << 0)
#define AMDGPU_FENCE_FLAG_INT (1 << 1)
#define AMDGPU_FENCE_FLAG_TC_WB_ONLY (1 << 2)
/* Ensure the execution in case of preemption or reset */
#define AMDGPU_FENCE_FLAG_EXEC (1 << 3)
#define to_amdgpu_ring(s) container_of((s), struct amdgpu_ring, sched)