From dcf75843c0f7b654c327c140293ba53bb4b3da85 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 4 Jul 2017 01:47:00 -0400 Subject: [PATCH] drm/amdgpu/gfx8: fix driver reload with KIQ MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Drop the deactivation in KIQ init and drop the KCQ disabling via KIQ. We disable the MEC shortly after anyway, so there is no need to wait for all of this. Doing so seems to leave the MEC in a bad way. Tested-by: Michel Dänzer Acked-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 69 +-------------------------- 1 file changed, 1 insertion(+), 68 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index a1ef7f6307b9..aa5a50f5eac8 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -4636,56 +4636,6 @@ static int gfx_v8_0_kiq_kcq_enable(struct amdgpu_device *adev) return r; } -static int gfx_v8_0_kiq_kcq_disable(struct amdgpu_device *adev) -{ - struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring; - uint32_t scratch, tmp = 0; - int r, i; - - r = amdgpu_gfx_scratch_get(adev, &scratch); - if (r) { - DRM_ERROR("Failed to get scratch reg (%d).\n", r); - return r; - } - WREG32(scratch, 0xCAFEDEAD); - - r = amdgpu_ring_alloc(kiq_ring, 6 + 3); - if (r) { - DRM_ERROR("Failed to lock KIQ (%d).\n", r); - amdgpu_gfx_scratch_free(adev, scratch); - return r; - } - /* unmap queues */ - amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_UNMAP_QUEUES, 4)); - amdgpu_ring_write(kiq_ring, - PACKET3_UNMAP_QUEUES_ACTION(1)| /* RESET_QUEUES */ - PACKET3_UNMAP_QUEUES_QUEUE_SEL(2)); /* select all queues */ - amdgpu_ring_write(kiq_ring, 0); - amdgpu_ring_write(kiq_ring, 0); - amdgpu_ring_write(kiq_ring, 0); - amdgpu_ring_write(kiq_ring, 0); - /* write to scratch for completion */ - amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_SET_UCONFIG_REG, 1)); - amdgpu_ring_write(kiq_ring, (scratch - PACKET3_SET_UCONFIG_REG_START)); - amdgpu_ring_write(kiq_ring, 0xDEADBEEF); - amdgpu_ring_commit(kiq_ring); - - for (i = 0; i < adev->usec_timeout; i++) { - tmp = RREG32(scratch); - if (tmp == 0xDEADBEEF) - break; - DRM_UDELAY(1); - } - if (i >= adev->usec_timeout) { - DRM_ERROR("KCQ disabled failed (scratch(0x%04X)=0x%08X)\n", - scratch, tmp); - r = -EINVAL; - } - amdgpu_gfx_scratch_free(adev, scratch); - - return r; -} - static int gfx_v8_0_deactivate_hqd(struct amdgpu_device *adev, u32 req) { int i, r = 0; @@ -4891,7 +4841,6 @@ int gfx_v8_0_mqd_commit(struct amdgpu_device *adev, static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring) { - int r = 0; struct amdgpu_device *adev = ring->adev; struct vi_mqd *mqd = ring->mqd_ptr; int mqd_idx = AMDGPU_MAX_COMPUTE_RINGS; @@ -4908,11 +4857,6 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring) amdgpu_ring_clear_ring(ring); mutex_lock(&adev->srbm_mutex); vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0); - r = gfx_v8_0_deactivate_hqd(adev, 1); - if (r) { - dev_err(adev->dev, "failed to deactivate ring %s\n", ring->name); - goto out_unlock; - } gfx_v8_0_mqd_commit(adev, mqd); vi_srbm_select(adev, 0, 0, 0, 0); mutex_unlock(&adev->srbm_mutex); @@ -4923,11 +4867,6 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring) mutex_lock(&adev->srbm_mutex); vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0); gfx_v8_0_mqd_init(ring); - r = gfx_v8_0_deactivate_hqd(adev, 1); - if (r) { - dev_err(adev->dev, "failed to deactivate ring %s\n", ring->name); - goto out_unlock; - } gfx_v8_0_mqd_commit(adev, mqd); vi_srbm_select(adev, 0, 0, 0, 0); mutex_unlock(&adev->srbm_mutex); @@ -4936,12 +4875,7 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring) memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(struct vi_mqd_allocation)); } - return r; - -out_unlock: - vi_srbm_select(adev, 0, 0, 0, 0); - mutex_unlock(&adev->srbm_mutex); - return r; + return 0; } static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring) @@ -5145,7 +5079,6 @@ static int gfx_v8_0_hw_fini(void *handle) pr_debug("For SRIOV client, shouldn't do anything.\n"); return 0; } - gfx_v8_0_kiq_kcq_disable(adev); gfx_v8_0_cp_enable(adev, false); gfx_v8_0_rlc_stop(adev); -- 2.20.1