[PATCH] drm/amdgpu: Fix DPX valid mode check on GC 9.4.3

[Zhang, Hawking]

[AMD Official Use Only - AMD Internal Distribution Only]


Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: Lazar, Lijo <Lijo.Lazar at amd.com>
Sent: Monday, November 4, 2024 13:11
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>; Kamal, Asad <Asad.Kamal at amd.com>
Subject: [PATCH] drm/amdgpu: Fix DPX valid mode check on GC 9.4.3

For DPX mode, the number of memory partitions supported should be less than or equal to 2.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com<mailto:lijo.lazar at amd.com>>
Fixes: 1589c82a1085 ("drm/amdgpu: Check memory ranges for valid xcp mode")
---
 drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c
index fccccea0d2d0..e157d6d857b6 100644
--- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c
+++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c
@@ -548,7 +548,7 @@ static bool __aqua_vanjaram_is_valid_mode(struct amdgpu_xcp_mgr *xcp_mgr,
        case AMDGPU_SPX_PARTITION_MODE:
                return adev->gmc.num_mem_partitions == 1 && num_xcc > 0;
        case AMDGPU_DPX_PARTITION_MODE:
-               return adev->gmc.num_mem_partitions != 8 && (num_xcc % 4) == 0;
+               return adev->gmc.num_mem_partitions <= 2 && (num_xcc % 4) == 0;
        case AMDGPU_TPX_PARTITION_MODE:
                return (adev->gmc.num_mem_partitions == 1 ||
                        adev->gmc.num_mem_partitions == 3) &&
--
2.25.1

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