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From 048928c678b34792e07cfa4c0917eca3338fd9e8 Mon Sep 17 00:00:00 2001
From: Jay Cornwall <Jay.Cornwall@amd.com>
Date: Thu, 6 Oct 2016 20:10:12 -0500
Subject: [PATCH 1198/4131] drm/amdkfd: Use software scheduler on Tonga ASIC
The CP scheduling path depends on the context save/restore feature for
timely runlist dequeue. Tonga ASICs do not support this feature.
Instead use the software scheduling path on Tonga. This does not
support HQD/VMID oversubscription or SR-IOV virtualization but is
otherwise equal in functionality.
Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index d77c1ad..3bc831f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1483,8 +1483,15 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
if (!dqm)
return NULL;
- dqm->sched_policy = (dev->device_info->asic_family == CHIP_HAWAII) ?
- KFD_SCHED_POLICY_NO_HWS : sched_policy;
+ switch (dev->device_info->asic_family) {
+ case CHIP_HAWAII:
+ case CHIP_TONGA:
+ dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
+ break;
+ default:
+ dqm->sched_policy = sched_policy;
+ break;
+ }
dqm->dev = dev;
switch (dqm->sched_policy) {
--
2.7.4
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