From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Wed, 13 Dec 2017 14:36:53 -0500
Subject: drm/amdgpu: Simplify amdgpu_lockup_timeout usage.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: 8854695add1eaaeafae728850c905c4727e56f35
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

With introduction of amdgpu_gpu_recovery we don't need any more
to rely on amdgpu_lockup_timeout == 0 for disabling GPU reset.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    7 ++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    |    4 ++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c  |   14 +-------------
 drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c      |    2 +-
 drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c      |    2 +-
 5 files changed, 11 insertions(+), 18 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1229,6 +1229,11 @@ static void amdgpu_check_arguments(struc
 			 amdgpu_vram_page_split);
 		amdgpu_vram_page_split = 1024;
 	}
+
+	if (amdgpu_lockup_timeout == 0) {
+		dev_warn(adev->dev, "lockup_timeout msut be > 0, adjusting to 10000\n");
+		amdgpu_lockup_timeout = 10000;
+	}
 }
 
 /**
@@ -2827,7 +2832,7 @@ bool amdgpu_need_backup(struct amdgpu_de
 	if (adev->flags & AMD_IS_APU)
 		return false;
 
-	return amdgpu_lockup_timeout > 0 ? true : false;
+	return amdgpu_gpu_recovery;
 }
 
 static int amdgpu_recover_vram_from_shadow(struct amdgpu_device *adev,
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -90,7 +90,7 @@ int amdgpu_disp_priority = 0;
 int amdgpu_hw_i2c = 0;
 int amdgpu_pcie_gen2 = -1;
 int amdgpu_msi = -1;
-int amdgpu_lockup_timeout = 0;
+int amdgpu_lockup_timeout = 10000;
 int amdgpu_dpm = -1;
 int amdgpu_fw_load_type = -1;
 int amdgpu_aspm = -1;
@@ -166,7 +166,7 @@ module_param_named(pcie_gen2, amdgpu_pci
 MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
 module_param_named(msi, amdgpu_msi, int, 0444);
 
-MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default 0 = disable)");
+MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms > 0 (default 10000)");
 module_param_named(lockup_timeout, amdgpu_lockup_timeout, int, 0444);
 
 MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -409,7 +409,6 @@ int amdgpu_fence_driver_start_ring(struc
 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
 				  unsigned num_hw_submission)
 {
-	long timeout;
 	int r;
 
 	/* Check that num_hw_submission is a power of two */
@@ -434,20 +433,9 @@ int amdgpu_fence_driver_init_ring(struct
 
 	/* No need to setup the GPU scheduler for KIQ ring */
 	if (ring->funcs->type != AMDGPU_RING_TYPE_KIQ) {
-		timeout = msecs_to_jiffies(amdgpu_lockup_timeout);
-		if (timeout == 0) {
-			/*
-			 * FIXME:
-			 * Delayed workqueue cannot use it directly,
-			 * so the scheduler will not use delayed workqueue if
-			 * MAX_SCHEDULE_TIMEOUT is set.
-			 * Currently keep it simple and silly.
-			 */
-			timeout = MAX_SCHEDULE_TIMEOUT;
-		}
 		r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
 				   num_hw_submission, amdgpu_job_hang_limit,
-				   timeout, ring->name);
+				   msecs_to_jiffies(amdgpu_lockup_timeout), ring->name);
 		if (r) {
 			DRM_ERROR("Failed to create scheduler on ring %s.\n",
 				  ring->name);
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -277,7 +277,7 @@ static int xgpu_ai_mailbox_rcv_irq(struc
 	int r;
 
 	/* trigger gpu-reset by hypervisor only if TDR disbaled */
-	if (amdgpu_lockup_timeout == 0) {
+	if (!amdgpu_gpu_recovery) {
 		/* see what event we get */
 		r = xgpu_ai_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION);
 
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
@@ -545,7 +545,7 @@ static int xgpu_vi_mailbox_rcv_irq(struc
 	int r;
 
 	/* trigger gpu-reset by hypervisor only if TDR disbaled */
-	if (amdgpu_lockup_timeout == 0) {
+	if (!amdgpu_gpu_recovery) {
 		/* see what event we get */
 		r = xgpu_vi_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION);