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| author | Alex Deucher <alexander.deucher@amd.com> | 2016-02-04 10:21:23 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-02-08 10:37:41 -0500 |
| commit | cd474ba0d6048aeefe6f1066a6bfb5eac36a2a81 (patch) | |
| tree | 4854307a6b0b4be42ee7885f27597ca652b51048 /drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | |
| parent | 6739b3d7bc18a5373efd863b11831e8f515fffe1 (diff) | |
| download | op-kernel-dev-cd474ba0d6048aeefe6f1066a6bfb5eac36a2a81.zip op-kernel-dev-cd474ba0d6048aeefe6f1066a6bfb5eac36a2a81.tar.gz | |
drm/amdgpu: add pcie cap module parameters (v2)
Allows the user to force the supported pcie gen and lane
config on both the asic and the chipset.
Useful for debugging pcie problems and for virtualization
where we may not be able to query the pcie bridge caps.
Default to:
gen: chipset 1/2, asic 1/2/3
lanes: 1/2/4/8/16
v2: fix bare metal case
Reviewed-by: monk liu <monk.liu@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 | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 9c1af89..9ef1db8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -83,6 +83,8 @@ int amdgpu_sched_jobs = 32; int amdgpu_sched_hw_submission = 2; int amdgpu_enable_semaphores = 0; int amdgpu_powerplay = -1; +unsigned amdgpu_pcie_gen_cap = 0; +unsigned amdgpu_pcie_lane_cap = 0; MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes"); module_param_named(vramlimit, amdgpu_vram_limit, int, 0600); @@ -170,6 +172,12 @@ MODULE_PARM_DESC(powerplay, "Powerplay component (1 = enable, 0 = disable, -1 = module_param_named(powerplay, amdgpu_powerplay, int, 0444); #endif +MODULE_PARM_DESC(pcie_gen_cap, "PCIE Gen Caps (0: autodetect (default))"); +module_param_named(pcie_gen_cap, amdgpu_pcie_gen_cap, uint, 0444); + +MODULE_PARM_DESC(pcie_lane_cap, "PCIE Lane Caps (0: autodetect (default))"); +module_param_named(pcie_lane_cap, amdgpu_pcie_lane_cap, uint, 0444); + static struct pci_device_id pciidlist[] = { #ifdef CONFIG_DRM_AMDGPU_CIK /* Kaveri */ |
