git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-18 06:33:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: Add peer-to-peer support among PCIe connected AMD GPUs

Browse Source 
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>
This commit is contained in:
Ramesh Errabolu
2022-05-26 12:24:23 -05:00
committed by Alex Deucher
parent 6fbfc3a23c
commit 08a2fd23c6
5 changed files with 283 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@@ -802,6 +802,16 @@ MODULE_PARM_DESC(no_queue_eviction_on_vm_fault, "No queue eviction on VM fault (
module_param_named(no_queue_eviction_on_vm_fault, amdgpu_no_queue_eviction_on_vm_fault, int, 0444);
#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.