drm/amdgpu: move nbio sdma_doorbell_range() into sdma code for vega

commit e3163bc8ffdfdb405e10530b140135b2ee487f89 upstream.

This mirrors what we do for other asics and this way we are
sure the sdma doorbell range is properly initialized.

There is a comment about the way doorbells on gfx9 work that
requires that they are initialized for other IPs before GFX
is initialized.  However, the statement says that it applies to
multimedia as well, but the VCN code currently initializes
doorbells after GFX and there are no known issues there.  In my
testing at least I don't see any problems on SDMA.

This is a prerequisite for fixing the Unsupported Request error
reported through AER during driver load.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216373
The error was unnoticed before and got visible because of the commit
referenced below. This doesn't fix anything in the commit below, rather
fixes the issue in amdgpu exposed by the commit. The reference is only
to associate this commit with below one so that both go together.

Fixes: 8795e182b02d ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()")
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 65181efba50ec73c68e44001692259f590983373..56424f75dd2cc900d078bba712b0f882f564c51d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1504,6 +1504,11 @@ static int sdma_v4_0_start(struct amdgpu_device *adev)
                WREG32_SDMA(i, mmSDMA0_CNTL, temp);
 
                if (!amdgpu_sriov_vf(adev)) {
+                       ring = &adev->sdma.instance[i].ring;
+                       adev->nbio.funcs->sdma_doorbell_range(adev, i,
+                               ring->use_doorbell, ring->doorbell_index,
+                               adev->doorbell_index.sdma_doorbell_range);
+
                        /* unhalt engine */
                        temp = RREG32_SDMA(i, mmSDMA0_F32_CNTL);
                        temp = REG_SET_FIELD(temp, SDMA0_F32_CNTL, HALT, 0);

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 7324e304288e86d7d13a531b2f27d4fe5f204c61..183024d7c184e3d2be2b4c1386a827f500661bb2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1211,22 +1211,6 @@ static int soc15_common_sw_fini(void *handle)
        return 0;
 }
 
-static void soc15_doorbell_range_init(struct amdgpu_device *adev)
-{
-       int i;
-       struct amdgpu_ring *ring;
-
-       /* sdma/ih doorbell range are programed by hypervisor */
-       if (!amdgpu_sriov_vf(adev)) {
-               for (i = 0; i < adev->sdma.num_instances; i++) {
-                       ring = &adev->sdma.instance[i].ring;
-                       adev->nbio.funcs->sdma_doorbell_range(adev, i,
-                               ring->use_doorbell, ring->doorbell_index,
-                               adev->doorbell_index.sdma_doorbell_range);
-               }
-       }
-}
-
 static int soc15_common_hw_init(void *handle)
 {
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -1246,12 +1230,6 @@ static int soc15_common_hw_init(void *handle)
 
        /* enable the doorbell aperture */
        soc15_enable_doorbell_aperture(adev, true);
-       /* HW doorbell routing policy: doorbell writing not
-        * in SDMA/IH/MM/ACV range will be routed to CP. So
-        * we need to init SDMA/IH/MM/ACV doorbell range prior
-        * to CP ip block init and ring test.
-        */
-       soc15_doorbell_range_init(adev);
 
        return 0;
 }