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| author | Harish Kasiviswanathan | 2017-06-09 17:26:57 +0200 |
|---|---|---|
| committer | Alex Deucher | 2017-06-09 17:29:38 +0200 |
| commit | 9a4b7d4c769e7513dec8f441de1f521ec4ead4b6 (patch) | |
| tree | 2484bc22632c27cba01ef82389ce8c82840d7181 /drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | |
| parent | drm/amdgpu: drop deprecated drm_get_pci_dev and drm_put_dev (diff) | |
| download | kernel-qcow2-linux-9a4b7d4c769e7513dec8f441de1f521ec4ead4b6.tar.gz kernel-qcow2-linux-9a4b7d4c769e7513dec8f441de1f521ec4ead4b6.tar.xz kernel-qcow2-linux-9a4b7d4c769e7513dec8f441de1f521ec4ead4b6.zip | |
drm/amdgpu: Add vm context module param
Add VM update mode module param (amdgpu.vm_update_mode) that can used to
control how VM pde/pte are updated for Graphics and Compute.
BIT0 controls Graphics and BIT1 Compute.
BIT0 [= 0] Graphics updated by SDMA [= 1] by CPU
BIT1 [= 0] Compute updated by SDMA [= 1] by CPU
By default, only for large BAR system vm_update_mode = 2, indicating
that Graphics VMs will be updated via SDMA and Compute VMs will be
updated via CPU. And for all all other systems (by default)
vm_update_mode = 0
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 9c6cdfd45e49..4d2bad404100 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -95,6 +95,7 @@ int amdgpu_vm_block_size = -1; int amdgpu_vm_fault_stop = 0; int amdgpu_vm_debug = 0; int amdgpu_vram_page_split = 512; +int amdgpu_vm_update_mode = -1; int amdgpu_exp_hw_support = 0; int amdgpu_sched_jobs = 32; int amdgpu_sched_hw_submission = 2; @@ -181,6 +182,9 @@ module_param_named(vm_fault_stop, amdgpu_vm_fault_stop, int, 0444); MODULE_PARM_DESC(vm_debug, "Debug VM handling (0 = disabled (default), 1 = enabled)"); module_param_named(vm_debug, amdgpu_vm_debug, int, 0644); +MODULE_PARM_DESC(vm_update_mode, "VM update using CPU (0 = never (default except for large BAR(LB)), 1 = Graphics only, 2 = Compute only (default for LB), 3 = Both"); +module_param_named(vm_update_mode, amdgpu_vm_update_mode, int, 0444); + MODULE_PARM_DESC(vram_page_split, "Number of pages after we split VRAM allocations (default 1024, -1 = disable)"); module_param_named(vram_page_split, amdgpu_vram_page_split, int, 0444); |