From 9a4b7d4c769e7513dec8f441de1f521ec4ead4b6 Mon Sep 17 00:00:00 2001 From: Harish Kasiviswanathan Date: Fri, 9 Jun 2017 11:26:57 -0400 Subject: drm/amdgpu: Add vm context module param MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c') 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); -- cgit v1.2.3