Commit ba0fb4b4 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: don't put MQDs in VRAM on ARM | ARM64 

Issues were reported with commit 1cfb4d61
("drm/amdgpu: put MQDs in VRAM") on an ADLINK Ampere
Altra Developer Platform (AVA developer platform).

Various ARM systems seem to have problems related
to PCIe and MMIO access.  In this case, I'm not sure
if this is specific to the ADLINK platform or ARM
in general.  Seems to be some coherency issue with
VRAM.  For now, just don't put MQDs in VRAM on ARM.

Link: https://lists.freedesktop.org/archives/amd-gfx/2023-October/100453.html


Fixes: 1cfb4d61 ("drm/amdgpu: put MQDs in VRAM")
Acked-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: alexey.klimov@linaro.org
parent 23170863

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

+2 −0
Original line number Diff line number Diff line
@@ -385,9 +385,11 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev, 
	struct amdgpu_ring *ring = &kiq->ring;

	u32 domain = AMDGPU_GEM_DOMAIN_GTT;



#if !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)

	/* Only enable on gfx10 and 11 for now to avoid changing behavior on older chips */

	if (amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(10, 0, 0))

		domain |= AMDGPU_GEM_DOMAIN_VRAM;

#endif



	/* create MQD for KIQ */

	if (!adev->enable_mes_kiq && !ring->mqd_obj) {