From: James Zhu <James.Zhu@amd.com>
To: amd-gfx@lists.freedesktop.org
Cc: jamesz@amd.com
Subject: [PATCH 1/2] drm/amdgpu/vcn: fix race condition issue for vcn start
Date: Mon, 10 Feb 2020 13:06:55 -0500 [thread overview]
Message-ID: <1581358016-8986-1-git-send-email-James.Zhu@amd.com> (raw)
Fix race condition issue when multiple vcn starts are called.
Signed-off-by: James Zhu <James.Zhu@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h | 1 +
2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index f96464e..aa7663f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -63,6 +63,7 @@ int amdgpu_vcn_sw_init(struct amdgpu_device *adev)
int i, r;
INIT_DELAYED_WORK(&adev->vcn.idle_work, amdgpu_vcn_idle_work_handler);
+ mutex_init(&adev->vcn.vcn_pg_lock);
switch (adev->asic_type) {
case CHIP_RAVEN:
@@ -210,6 +211,7 @@ int amdgpu_vcn_sw_fini(struct amdgpu_device *adev)
}
release_firmware(adev->vcn.fw);
+ mutex_destroy(&adev->vcn.vcn_pg_lock);
return 0;
}
@@ -321,6 +323,7 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
struct amdgpu_device *adev = ring->adev;
bool set_clocks = !cancel_delayed_work_sync(&adev->vcn.idle_work);
+ mutex_lock(&adev->vcn.vcn_pg_lock);
if (set_clocks) {
amdgpu_gfx_off_ctrl(adev, false);
amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
@@ -345,6 +348,7 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
adev->vcn.pause_dpg_mode(adev, ring->me, &new_state);
}
+ mutex_unlock(&adev->vcn.vcn_pg_lock);
}
void amdgpu_vcn_ring_end_use(struct amdgpu_ring *ring)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
index 6fe0573..2ae110d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
@@ -200,6 +200,7 @@ struct amdgpu_vcn {
struct drm_gpu_scheduler *vcn_dec_sched[AMDGPU_MAX_VCN_INSTANCES];
uint32_t num_vcn_enc_sched;
uint32_t num_vcn_dec_sched;
+ struct mutex vcn_pg_lock;
unsigned harvest_config;
int (*pause_dpg_mode)(struct amdgpu_device *adev,
--
2.7.4
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next reply other threads:[~2020-02-10 18:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-10 18:06 James Zhu [this message]
2020-02-10 18:06 ` [PATCH 2/2] drm/amdgpu/vcn: fix race condition issue for dpg unpause mode switch James Zhu
2020-02-12 14:27 ` [PATCH 1/2] drm/amdgpu/vcn: fix race condition issue for vcn start Zhu, James
2020-02-12 15:11 ` Liu, Leo
2020-02-12 16:13 ` Zhu, James
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