[PATCH 072/159] drm/amdgpu: init gds for aldebaran

[Alex Deucher]

From: Hawking Zhang <Hawking.Zhang at amd.com>

aldebaran removed gds internal memory for atomic usage.
it only supports gws opcode in kernel like barrier,
semaphore.etc. there won't be usage of gds in either
kernel or pm4 packet. max_wave_id should also be marked
as deprecated for aldebaran.

Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index f8816ebd431d..91da6561cd1b 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -6974,6 +6974,12 @@ static void gfx_v9_0_set_gds_init(struct amdgpu_device *adev)
 	case CHIP_ARCTURUS:
 		adev->gds.gds_size = 0x1000;
 		break;
+	case CHIP_ALDEBARAN:
+		/* aldebaran removed all the GDS internal memory,
+		 * only support GWS opcode in kernel, like barrier
+		 * semaphore.etc */
+		adev->gds.gds_size = 0;
+		break;
 	default:
 		adev->gds.gds_size = 0x10000;
 		break;
@@ -6996,6 +7002,10 @@ static void gfx_v9_0_set_gds_init(struct amdgpu_device *adev)
 	case CHIP_ARCTURUS:
 		adev->gds.gds_compute_max_wave_id = 0xfff;
 		break;
+	case CHIP_ALDEBARAN:
+		/* deprecated for Aldebaran, no usage at all */
+		adev->gds.gds_compute_max_wave_id = 0;
+		break;
 	default:
 		/* this really depends on the chip */
 		adev->gds.gds_compute_max_wave_id = 0x7ff;
-- 
2.29.2