linux-next.git/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c, branch master

drm/amdgpu: switch all IPs to using job for IBs

2026-09-02T18:54:40+00:00

Switch remaining direct submissions to using a job structure for IBs. This converts GFX, compute, SDMA, and VPE to using jobs. VCE, UVD, JPEG, and VCN already did. v2: fix missing ib pointer setup spotted by the kernel test robot v3: rebase Acked-by: Pierre-Eric Pelloux-Prayer Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Remove is_idle (non trivial functions)

2026-08-25T22:25:28+00:00

The is_idle method on amd_ip_funcs is never called. Remove the implementations that actually do something. In most cases the same code has been duplicated in the wait_for_idle method implementations that is still used. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Alex Deucher

drm/amdgpu: move struct amdgpu_wb and helpers into separate files

2026-07-08T18:20:30+00:00

Move struct amdgpu_wb and helpers out of the monolithic header amdgpu.h into its own dedicated header amdgpu_wb.h. Add amdgpu_wb_init() and amdgpu_wb_fini() into amdgpu_wb.h. Move functions amdgpu_device_wb_get(), amdgpu_device_wb_free(), amdgpu_device_wb_init(), and amdgpu_device_wb_fini() out of amdgpu_device.c into new dedicated amdgpu_wb.c file. Removed static from functions amdgpu_device_wb_init() and amdgpu_device_wb_fini(). Rename functions amdgpu_device_wb_get(), amdgpu_device_wb_free(), amdgpu_device_wb_init(), and amdgpu_device_wb_fini() into amdgpu_wb_get(), amdgpu_wb_free(), amdgpu_wb_init(), and amdgpu_wb_fini(). Update amdgpu/Makefile to build amdgpu_wb.o. This is part of the ongoing effort to reduce the size of amdgpu.h into their own respective separate headers. Signed-off-by: Shahyan Soltani Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission

2026-05-05T13:56:51+00:00

sdma_v4_0_ring_emit_fence() contains two BUG_ON(addr & 0x3) assertions that verify fence writeback addresses are dword-aligned. These assertions can be reached from unprivileged userspace via crafted DRM_IOCTL_AMDGPU_CS submissions, causing a fatal kernel panic in a scheduler worker thread. Replace both BUG_ON() calls with WARN_ON() to log the condition without crashing the kernel. A misaligned fence address at this point indicates a driver bug, but crashing the kernel is never the correct response when the assertion is reachable from userspace. The CS IOCTL path is the correct place to filter invalid submissions; the ring emission callback is too late to do anything about it. Fixes: 2130f89ced2c ("drm/amdgpu: add SDMA v4.0 implementation (v2)") Reviewed-by: Christian König Signed-off-by: John B. Moore Signed-off-by: Alex Deucher

drm/amdgpu: only use working sdma schedulers for ttm

2026-04-17T19:41:12+00:00

It's possible that some sdma instances aren't working so we shouldn't try to use them from TTM. To achieve this, delay the call to amdgpu_sdma_set_buffer_funcs_scheds after the rings have been tested, and then use the 'ready' property to decide if a sched should be used or not. Note that currently it's not doing much, because if the ring helper fails for any ring, the whole sdma block init fails. --- v5: check buffer_funcs_enabled from amdgpu_ttm_access_memory_sdma --- Signed-off-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: pass all the sdma scheds to amdgpu_mman

2026-04-17T19:41:12+00:00

This will allow the use of all of them for clear/fill buffer operations. Since drm_sched_entity_init requires a scheduler array, we store schedulers rather than rings. For the few places that need access to a ring, we can get it from the sched using container_of. Since the code is the same for all sdma versions, add a new helper amdgpu_sdma_set_buffer_funcs_scheds to set buffer_funcs_scheds based on the number of sdma instances. Note: the new sched array is identical to the amdgpu_vm_manager one. These 2 could be merged. Signed-off-by: Pierre-Eric Pelloux-Prayer Acked-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/sdma4.0: adjust SDMA limits

2026-02-23T19:39:32+00:00

SDMA 4.4.x has increased transfer limits. v2: fix harder, use shifts to make it more obvious Cc: Vitaly Prosyak Reviewed-by: Vitaly Prosyak Signed-off-by: Alex Deucher

drm/amdgpu: introduce amdgpu_sdma_set_vm_pte_scheds

2026-02-23T19:16:30+00:00

All sdma versions used the same logic, so add a helper and move the common code to a single place. --- v2: pass amdgpu_vm_pte_funcs as well v3: drop all the *_set_vm_pte_funcs one liners v5: rebased --- Signed-off-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm: amdgpu: Use struct drm_wedge_task_info inside of struct amdgpu_task_info

2025-06-17T14:32:47+00:00

To avoid a cast when calling drm_dev_wedged_event(), replace pid and task name inside of struct amdgpu_task_info with struct drm_wedge_task_info. Reviewed-by: Christian König Link: https://lore.kernel.org/r/20250617124949.2151549-6-andrealmeid@igalia.com Signed-off-by: André Almeida

drm/amdgpu: update the handle ptr in is_idle

2025-02-25T16:43:58+00:00

Update the *handle to amdgpu_ip_block ptr for all functions pointers of is_idle. Signed-off-by: Sunil Khatri Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher