This is a note to let you know that I've just added the patch titled drm/amdgpu: move nbio sdma_doorbell_range() into sdma code for vega to the 5.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amdgpu-move-nbio-sdma_doorbell_range-into-sdma-code-for-vega.patch and it can be found in the queue-5.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e3163bc8ffdfdb405e10530b140135b2ee487f89 Mon Sep 17 00:00:00 2001 From: Alex Deucher <alexander.deucher@xxxxxxx> Date: Fri, 9 Sep 2022 11:53:27 -0400 Subject: drm/amdgpu: move nbio sdma_doorbell_range() into sdma code for vega MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Alex Deucher <alexander.deucher@xxxxxxx> 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@xxxxxxx> Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 5 +++++ drivers/gpu/drm/amd/amdgpu/soc15.c | 22 ---------------------- 2 files changed, 5 insertions(+), 22 deletions(-) --- 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 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); --- 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 *ha 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 *ha /* 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; } Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are queue-5.19/drm-amdgpu-move-nbio-ih_doorbell_range-into-ih-code-for-vega.patch queue-5.19/drm-amdgpu-move-nbio-sdma_doorbell_range-into-sdma-code-for-vega.patch queue-5.19/drm-amdgpu-don-t-enable-ltr-if-not-supported.patch queue-5.19/drm-amdgpu-make-sure-to-init-common-ip-before-gmc.patch