<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> </div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr">From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Zeng, Oak <Oak.Zeng@amd.com> Sent: Monday, January 14, 2019 5:39:41 PM To: amd-gfx@lists.freedesktop.org Cc: Zeng, Oak Subject: [PATCH] drm/amdgpu: Setting doorbell range registers earlier <div> </div> </div> <div class="BodyFragment"> <div class="PlainText">HW doorbell writing routing policy: writing to doorbell not in SDMA/IH/MM/ACV doorbell range will be routed to CP. So CP doorbell routing depends on doorbell range setting of above blocks. Setting doorbell range of above blocks earlier (soc15_common_hw_init) to make sure CP doorbell writing be routed to CP block. Change-Id: I3f8edd582fb7cc20a83f48f7a1ff789036b3550e Signed-off-by: Oak Zeng <Oak.Zeng@amd.com> --- drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 -- drivers/gpu/drm/amd/amdgpu/soc15.c | 21 +++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 2 -- 3 files changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c index 59638b8..48a166b 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c @@ -834,8 +834,6 @@ static void sdma_v4_0_gfx_resume(struct amdgpu_device *adev, unsigned int i) OFFSET, ring->doorbell_index); WREG32_SDMA(i, mmSDMA0_GFX_DOORBELL, doorbell); WREG32_SDMA(i, mmSDMA0_GFX_DOORBELL_OFFSET, doorbell_offset); - adev->nbio_funcs->sdma_doorbell_range(adev, i, ring->use_doorbell, - ring->doorbell_index); sdma_v4_0_ring_set_wptr(ring); diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 5248b03..4cae547 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -966,6 +966,21 @@ 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; + + 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->nbio_funcs->ih_doorbell_range(adev, adev->irq.ih.use_doorbell, + adev->irq.ih.doorbell_index); +} + static int soc15_common_hw_init(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; @@ -978,6 +993,12 @@ static int soc15_common_hw_init(void *handle) adev->nbio_funcs->init_registers(adev); /* 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; } diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c index 5627019..877b4a6 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c @@ -140,8 +140,6 @@ static int vega10_ih_irq_init(struct amdgpu_device *adev) ENABLE, 0); } WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR, ih_doorbell_rtpr); - adev->nbio_funcs->ih_doorbell_range(adev, adev->irq.ih.use_doorbell, - adev->irq.ih.doorbell_index); tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL); tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL, -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org <a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> </div> </div> </body> </html>