[PATCH v11 15/28] drm/amdgpu: add kernel config for gfx-userqueue

[Shashank Sharma <shashank.sharma@amd.com>]

This patch:
- adds a kernel config option "CONFIG_DRM_AMD_USERQ_GFX"
- moves the usequeue initialization code for all IPs under
  this flag

so that the userqueue works only when the config is enabled.

V9:  Introduce this patch
V10: Call it CONFIG_DRM_AMDGPU_NAVI3X_USERQ instead of
     CONFIG_DRM_AMDGPU_USERQ_GFX (Christian)
V11: Add GFX in the config help description message.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Arvind Yadav <arvind.yadav@amd.com>
Change-Id: I509a1fc9eb9ae1adddd1e042ae4456737333a606
---
 drivers/gpu/drm/amd/amdgpu/Kconfig     | 8 ++++++++
 drivers/gpu/drm/amd/amdgpu/Makefile    | 4 +++-
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 4 ++++
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c | 3 +++
 4 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 0051fb1b437f..b7f41177b3b9 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -92,6 +92,14 @@ config DRM_AMDGPU_WERROR
 	  Add -Werror to the build flags for amdgpu.ko.
 	  Only enable this if you are warning code for amdgpu.ko.
 
+config DRM_AMDGPU_NAVI3X_USERQ
+	bool "Enable Navi 3x gfx usermode queues"
+	depends on DRM_AMDGPU
+	default n
+	help
+	  Choose this option to enable GFX usermode queue support for GFX/SDMA/Compute
+          workload submission. This feature is supported on Navi 3X only.
+
 source "drivers/gpu/drm/amd/acp/Kconfig"
 source "drivers/gpu/drm/amd/display/Kconfig"
 source "drivers/gpu/drm/amd/amdkfd/Kconfig"
diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index d9bf70251eba..beb8442b4e3a 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -174,7 +174,9 @@ amdgpu-y += \
 	amdgpu_mes.o \
 	mes_v11_0.o \
 	mes_v12_0.o \
-	mes_v11_0_userqueue.o
+
+# add GFX userqueue support
+amdgpu-$(CONFIG_DRM_AMDGPU_NAVI3X_USERQ) += mes_v11_0_userqueue.o
 
 # add UVD block
 amdgpu-y += \
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 82a8df56240e..f3d034f2d4fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1553,8 +1553,10 @@ static int gfx_v11_0_sw_init(void *handle)
 		adev->gfx.mec.num_mec = 2;
 		adev->gfx.mec.num_pipe_per_mec = 4;
 		adev->gfx.mec.num_queue_per_pipe = 4;
+#ifdef CONFIG_DRM_AMDGPU_NAVI3X_USERQ
 		adev->userq_funcs[AMDGPU_HW_IP_GFX] = &userq_mes_v11_0_funcs;
 		adev->userq_funcs[AMDGPU_HW_IP_COMPUTE] = &userq_mes_v11_0_funcs;
+#endif
 		break;
 	case IP_VERSION(11, 0, 1):
 	case IP_VERSION(11, 0, 4):
@@ -1567,8 +1569,10 @@ static int gfx_v11_0_sw_init(void *handle)
 		adev->gfx.mec.num_mec = 1;
 		adev->gfx.mec.num_pipe_per_mec = 4;
 		adev->gfx.mec.num_queue_per_pipe = 4;
+#ifdef CONFIG_DRM_AMD_USERQ_GFX
 		adev->userq_funcs[AMDGPU_HW_IP_GFX] = &userq_mes_v11_0_funcs;
 		adev->userq_funcs[AMDGPU_HW_IP_COMPUTE] = &userq_mes_v11_0_funcs;
+#endif
 		break;
 	default:
 		adev->gfx.me.num_me = 1;
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index 62f6f015c685..bb11917ad855 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -1341,7 +1341,10 @@ static int sdma_v6_0_sw_init(void *handle)
 	else
 		DRM_ERROR("Failed to allocated memory for SDMA IP Dump\n");
 
+#ifdef CONFIG_DRM_AMDGPU_NAVI3X_USERQ
 	adev->userq_funcs[AMDGPU_HW_IP_DMA] = &userq_mes_v11_0_funcs;
+#endif
+
 	return r;
 }
 
-- 
2.45.1