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| author | Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> | 2023-04-13 17:22:53 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-04-18 23:28:54 +0300 |
| commit | 4f18b9a6711adbc7c76993c734a94ee3f5c61791 (patch) | |
| tree | 18d76f6c268f1d870253b749c2d68c8c7a081512 /drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | |
| parent | c30ddcece3a0a86853862a7d92678a79525ca1fb (diff) | |
| download | linux-4f18b9a6711adbc7c76993c734a94ee3f5c61791.tar.xz | |
drm/amdgpu: Add support for querying the max ibs in a submission. (v3)
This info would be used by radv to figure out when we need to
split a submission into multiple submissions. radv currently has
a limit of 192 which seems to work for most gfx submissions, but
is way too high for e.g. compute or sdma.
Userspace is available at
https://gitlab.freedesktop.org/bnieuwenhuizen/mesa/-/commits/ib-rejection-v3
v3: Completely rewrote based on suggestion of making it a separate query.
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2498
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 0efb38539d70..1a2e342af1c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -1140,6 +1140,15 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) kfree(caps); return r; } + case AMDGPU_INFO_MAX_IBS: { + uint32_t max_ibs[AMDGPU_HW_IP_NUM]; + + for (i = 0; i < AMDGPU_HW_IP_NUM; ++i) + max_ibs[i] = amdgpu_ring_max_ibs(i); + + return copy_to_user(out, max_ibs, + min((size_t)size, sizeof(max_ibs))) ? -EFAULT : 0; + } default: DRM_DEBUG_KMS("Invalid request %d\n", info->query); return -EINVAL; |