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From: Alex Sierra <alex.sierra@amd.com>
To: amd-gfx@lists.freedesktop.org
Cc: Alex Sierra <alex.sierra@amd.com>,
	Felix.Kuehling@amd.com, christian.Koenig@amd.com
Subject: [PATCH] drm/amdgpu: enable 48-bit IH timestamp counter
Date: Tue, 10 Nov 2020 11:55:19 -0600	[thread overview]
Message-ID: <20201110175519.21308-1-alex.sierra@amd.com> (raw)

By default this timestamp is based on a 32 bit counter.
This is used by the amdgpu_gmc_filter_faults, to
avoid process the same interrupt in retry configuration.
Apparently there's a problem when the timestamp coming from
IH overflows and compares against timestamp coming from the
the hash table.
This patch only extends the time overflow from 10 minutes to
aprx 455 days.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 6 ++++++
 drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
index 837769fcb35b..bda916f33805 100644
--- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
@@ -94,6 +94,8 @@ static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
 
 	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1);
 	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
+	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
+				   RB_GPU_TS_ENABLE, 1);
 	if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 		if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
 			DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
@@ -109,6 +111,8 @@ static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
 		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
 					   RB_ENABLE, 1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
+					   RB_GPU_TS_ENABLE, 1);
 		if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 			if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
 						ih_rb_cntl)) {
@@ -125,6 +129,8 @@ static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
 		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
 					   RB_ENABLE, 1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
+					   RB_GPU_TS_ENABLE, 1);
 		if (amdgpu_sriov_vf(adev) && adev->asic_type < CHIP_NAVI10) {
 			if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
 						ih_rb_cntl)) {
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
index 407c6093c2ec..35d68bc5d95e 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
@@ -50,6 +50,8 @@ static void vega10_ih_enable_interrupts(struct amdgpu_device *adev)
 
 	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1);
 	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
+	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
+				   RB_GPU_TS_ENABLE, 1);
 	if (amdgpu_sriov_vf(adev)) {
 		if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL, ih_rb_cntl)) {
 			DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
@@ -64,6 +66,8 @@ static void vega10_ih_enable_interrupts(struct amdgpu_device *adev)
 		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
 		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
 					   RB_ENABLE, 1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
+					   RB_GPU_TS_ENABLE, 1);
 		if (amdgpu_sriov_vf(adev)) {
 			if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1,
 						ih_rb_cntl)) {
@@ -80,6 +84,8 @@ static void vega10_ih_enable_interrupts(struct amdgpu_device *adev)
 		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
 		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
 					   RB_ENABLE, 1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
+					   RB_GPU_TS_ENABLE, 1);
 		if (amdgpu_sriov_vf(adev)) {
 			if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2,
 						ih_rb_cntl)) {
-- 
2.17.1

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             reply	other threads:[~2020-11-10 17:55 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-10 17:55 Alex Sierra [this message]
2020-11-10 17:57 ` [PATCH] drm/amdgpu: enable 48-bit IH timestamp counter Sierra Guiza, Alejandro (Alex)
2020-11-16 11:31   ` Christian König
2020-11-13 17:11     ` Sierra Guiza, Alejandro (Alex)
2020-11-13 17:15     ` Felix Kuehling
2020-11-14  8:26       ` Christian König
  -- strict thread matches above, loose matches on Subject: below --
2020-11-10  3:20 Alex Sierra
2020-11-10 11:54 ` Christian König
2020-11-10 18:08 ` philip yang

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