From: Monk Liu <Monk.Liu-5C7GfCeVMHo@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Cc: Monk Liu <Monk.Liu-5C7GfCeVMHo@public.gmane.org>
Subject: [PATCH 5/6] drm/amdgpu:kiq reg access need timeout(v2)
Date: Wed, 3 May 2017 11:48:11 +0800 [thread overview]
Message-ID: <1493783292-2661-5-git-send-email-Monk.Liu@amd.com> (raw)
In-Reply-To: <1493783292-2661-1-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
this is to prevent fence forever waiting if FLR occured
during register accessing.
v2:
use define instead of hardcode for the timeout msec
Change-Id: I32cc219a08f5a67654beb26c45d1b95d2b60cc96
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 966bf7f..757cbc4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -22,6 +22,7 @@
*/
#include "amdgpu.h"
+#define MAX_KIQ_REG_WAIT 100000
int amdgpu_allocate_static_csa(struct amdgpu_device *adev)
{
@@ -128,10 +129,12 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
amdgpu_ring_commit(ring);
mutex_unlock(&kiq->ring_mutex);
- r = fence_wait(f, false);
- if (r)
- DRM_ERROR("wait for kiq fence error: %ld.\n", r);
+ r = fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT));
fence_put(f);
+ if (r < 1) {
+ DRM_ERROR("wait for kiq fence error: %ld.\n", r);
+ return ~0;
+ }
val = adev->wb.wb[adev->virt.reg_val_offs];
@@ -154,8 +157,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
amdgpu_ring_commit(ring);
mutex_unlock(&kiq->ring_mutex);
- r = fence_wait(f, false);
- if (r)
+ r = fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT));
+ if (r < 1)
DRM_ERROR("wait for kiq fence error: %ld.\n", r);
fence_put(f);
}
--
2.7.4
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next prev parent reply other threads:[~2017-05-03 3:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-03 3:48 [PATCH 1/6] drm/amdgpu:fix cannot receive rcv/ack irq bug Monk Liu
[not found] ` <1493783292-2661-1-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 3:48 ` [PATCH 2/6] drm/amdgpu:need som change on vega10 mailbox Monk Liu
[not found] ` <1493783292-2661-2-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 6:27 ` Yu, Xiangliang
2017-05-03 9:05 ` Christian König
[not found] ` <09b3c7b4-19f9-2ca2-301e-324b71af1479-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
2017-05-03 15:20 ` Alex Deucher
[not found] ` <CADnq5_MHdrQzRKQNHMSR5ucorerVZ9JMA3kE4LOVVx1Lwz0=KA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-05-03 15:22 ` Liu, Monk
2017-05-03 3:48 ` [PATCH 3/6] drm/amdgpu:re-write sriov_reinit_early/late Monk Liu
[not found] ` <1493783292-2661-3-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 6:43 ` Yu, Xiangliang
2017-05-03 9:02 ` Christian König
[not found] ` <fe18ce3e-dc63-412b-7dbb-aa5265dfad9f-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
2017-05-03 9:10 ` Liu, Monk
[not found] ` <DM5PR12MB1610B39D23F8DC3CBCD18A3784160-2J9CzHegvk++jCVTvoAFKAdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2017-05-03 15:23 ` Alex Deucher
2017-05-03 3:48 ` [PATCH 4/6] drm/amdgpu:cleanups KIQ ring_funcs emit_frame_size Monk Liu
[not found] ` <1493783292-2661-4-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 6:33 ` Yu, Xiangliang
2017-05-03 9:02 ` Christian König
2017-05-03 15:23 ` Alex Deucher
2017-05-03 3:48 ` Monk Liu [this message]
[not found] ` <1493783292-2661-5-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 6:35 ` [PATCH 5/6] drm/amdgpu:kiq reg access need timeout(v2) Yu, Xiangliang
2017-05-03 3:48 ` [PATCH 6/6] drm/amdgpu:PTE flag should be 64 bit width Monk Liu
[not found] ` <1493783292-2661-6-git-send-email-Monk.Liu-5C7GfCeVMHo@public.gmane.org>
2017-05-03 13:10 ` Alex Deucher
2017-05-03 6:24 ` [PATCH 1/6] drm/amdgpu:fix cannot receive rcv/ack irq bug Yu, Xiangliang
2017-05-03 9:05 ` Christian König
2017-05-03 15:19 ` Alex Deucher
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