diff options
| author |   Ramesh Errabolu <Ramesh.Errabolu@amd.com> | 2022-05-26 12:24:23 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2022-06-08 11:40:12 -0400 |
| commit | 08a2fd23c6c21e5ef24248a9c1b09e929655eb3b (patch) | |
| tree | 5de8e5e2839cdc06bbc40c9e87fec3d92a99b1c3 /drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | |
| parent | drm/amdkfd: Define config HSA_AMD_P2P to support peer-to-peer (diff) | |
| download | linux-dev-08a2fd23c6c21e5ef24248a9c1b09e929655eb3b.tar.xz linux-dev-08a2fd23c6c21e5ef24248a9c1b09e929655eb3b.zip | |
drm/amdgpu: Add peer-to-peer support among PCIe connected AMD GPUs
Add support for peer-to-peer communication among AMD GPUs over PCIe
bus. Support REQUIRES enablement of config HSA_AMD_P2P.
Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@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 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 8890300766a5..e3d139708160 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -803,6 +803,16 @@ module_param_named(no_queue_eviction_on_vm_fault, amdgpu_no_queue_eviction_on_vm #endif /** + * DOC: pcie_p2p (bool) + * Enable PCIe P2P (requires large-BAR). Default value: true (on) + */ +#ifdef CONFIG_HSA_AMD_P2P +bool pcie_p2p = true; +module_param(pcie_p2p, bool, 0444); +MODULE_PARM_DESC(pcie_p2p, "Enable PCIe P2P (requires large-BAR). (N = off, Y = on(default))"); +#endif + +/** * DOC: dcfeaturemask (uint) * Override display features enabled. See enum DC_FEATURE_MASK in drivers/gpu/drm/amd/include/amd_shared.h. * The default is the current set of stable display features. |