[PATCH Review 1/1] drm/amdgpu: Workaround to skip kiq ring test during ras gpu recovery

[Zhang, Hawking]

[AMD Official Use Only - General]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Stanley.Yang
Sent: Tuesday, October 17, 2023 22:37
To: amd-gfx at lists.freedesktop.org
Cc: Yang, Stanley <Stanley.Yang at amd.com>
Subject: [PATCH Review 1/1] drm/amdgpu: Workaround to skip kiq ring test during ras gpu recovery

This is workaround, kiq ring test failed in suspend stage when do ras recovery for gfx v9_4_3.

Change-Id: I8de9900aa76706f59bc029d4e9e8438c6e1db8e0
Signed-off-by: Stanley.Yang <Stanley.Yang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 9a158018ae16..902e60203809 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -29,6 +29,7 @@
 #include "amdgpu_rlc.h"
 #include "amdgpu_ras.h"
 #include "amdgpu_xcp.h"
+#include "amdgpu_xgmi.h"

 /* delay 0.1 second to enable gfx off feature */
 #define GFX_OFF_DELAY_ENABLE         msecs_to_jiffies(100)
@@ -501,6 +502,9 @@ int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev, int xcc_id)  {
        struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_id];
        struct amdgpu_ring *kiq_ring = &kiq->ring;
+       struct amdgpu_hive_info *hive;
+       struct amdgpu_ras *ras;
+       int hive_ras_recovery;
        int i, r = 0;
        int j;

@@ -521,6 +525,23 @@ int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev, int xcc_id)
                                           RESET_QUEUES, 0, 0);
        }

+       /**
+        * This is workaround: only skip kiq_ring test
+        * during ras recovery in suspend stage for gfx v9_4_3
+        */
+       hive = amdgpu_get_xgmi_hive(adev);
+       if (hive) {
+               hive_ras_recovery = atomic_read(&hive->ras_recovery);
+               amdgpu_put_xgmi_hive(hive);
+       }
+
+       ras = amdgpu_ras_get_context(adev);
+       if ((amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3)) &&
+               ras && (atomic_read(&ras->in_recovery) || hive_ras_recovery)) {
+               spin_unlock(&kiq->ring_lock);
+               return 0;
+       }
+
        if (kiq_ring->sched.ready && !adev->job_hang)
                r = amdgpu_ring_test_helper(kiq_ring);
        spin_unlock(&kiq->ring_lock);
--
2.25.1