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From 4f20032955876f4f5e3c6840495e45a9861a1213 Mon Sep 17 00:00:00 2001
From: Monk Liu <Monk.Liu@amd.com>
Date: Thu, 21 Sep 2017 14:59:40 +0800
Subject: [PATCH 1870/4131] drm/amdgpu:unmap KCQ in gfx hw_fini(v2)
v2:
move kcq_disable out of SRIOV, make it genearal
Change-Id: Ieee45a0127701ba946b5f8014ff0ac0a8a94a200
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 57 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 58 +++++++++++++++++++++++++++++++++++
2 files changed, 115 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 9476a22..e752f37 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -5037,12 +5037,69 @@ static int gfx_v8_0_hw_init(void *handle)
return r;
}
+static int gfx_v8_0_kcq_disable(struct amdgpu_ring *kiq_ring,struct amdgpu_ring *ring)
+{
+ struct amdgpu_device *adev = kiq_ring->adev;
+ 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, 10);
+ 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, /* Q_sel: 0, vmid: 0, engine: 0, num_Q: 1 */
+ PACKET3_UNMAP_QUEUES_ACTION(1) | /* RESET_QUEUES */
+ PACKET3_UNMAP_QUEUES_QUEUE_SEL(0) |
+ PACKET3_UNMAP_QUEUES_ENGINE_SEL(0) |
+ PACKET3_UNMAP_QUEUES_NUM_QUEUES(1));
+ amdgpu_ring_write(kiq_ring, PACKET3_UNMAP_QUEUES_DOORBELL_OFFSET0(ring->doorbell_index));
+ 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_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int i;
amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0);
+
+ /* disable KCQ to avoid CPC touch memory not valid anymore */
+ for (i = 0; i < adev->gfx.num_compute_rings; i++)
+ gfx_v8_0_kcq_disable(&adev->gfx.kiq.ring, &adev->gfx.compute_ring[i]);
+
if (amdgpu_sriov_vf(adev)) {
pr_debug("For SRIOV client, shouldn't do anything.\n");
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index d1dbec1..6f509d9 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2895,12 +2895,70 @@ static int gfx_v9_0_hw_init(void *handle)
return r;
}
+static int gfx_v9_0_kcq_disable(struct amdgpu_ring *kiq_ring,struct amdgpu_ring *ring)
+{
+ struct amdgpu_device *adev = kiq_ring->adev;
+ 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, 10);
+ 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, /* Q_sel: 0, vmid: 0, engine: 0, num_Q: 1 */
+ PACKET3_UNMAP_QUEUES_ACTION(1) | /* RESET_QUEUES */
+ PACKET3_UNMAP_QUEUES_QUEUE_SEL(0) |
+ PACKET3_UNMAP_QUEUES_ENGINE_SEL(0) |
+ PACKET3_UNMAP_QUEUES_NUM_QUEUES(1));
+ amdgpu_ring_write(kiq_ring, PACKET3_UNMAP_QUEUES_DOORBELL_OFFSET0(ring->doorbell_index));
+ 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_v9_0_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int i;
amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0);
+
+ /* disable KCQ to avoid CPC touch memory not valid anymore */
+ for (i = 0; i < adev->gfx.num_compute_rings; i++)
+ gfx_v9_0_kcq_disable(&adev->gfx.kiq.ring, &adev->gfx.compute_ring[i]);
+
if (amdgpu_sriov_vf(adev)) {
gfx_v9_0_cp_gfx_enable(adev, false);
/* must disable polling for SRIOV when hw finished, otherwise
--
2.7.4
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