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drm/amdkfd: Set iolink non-coherent in topology

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Fix non-coherent bit of iolink properties flag
which always is 0.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2021-06-16 11:42:13 -04:00 committed by Alex Deucher
parent 5fd953a3f6
commit c9cfbf7f44
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/amd/amdkfd/kfd_topology.c
View file

@ -1222,6 +1222,28 @@ static void kfd_set_iolink_no_atomics(struct kfd_topology_device *dev,
}
}
static void kfd_set_iolink_non_coherent(struct kfd_topology_device *to_dev,
struct kfd_iolink_properties *outbound_link,
struct kfd_iolink_properties *inbound_link)
{
/* CPU -> GPU with PCIe */
if (!to_dev->gpu &&
inbound_link->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS)
inbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT;
if (to_dev->gpu) {
/* GPU <-> GPU with PCIe and
* Vega20 with XGMI
*/
if (inbound_link->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS ||
(inbound_link->iolink_type == CRAT_IOLINK_TYPE_XGMI &&
to_dev->gpu->device_info->asic_family == CHIP_VEGA20)) {
outbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT;
inbound_link->flags |= CRAT_IOLINK_FLAGS_NON_COHERENT;
}
}
}
static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
{
struct kfd_iolink_properties *link, *inbound_link;
@ -1247,6 +1269,7 @@ static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
inbound_link->flags = CRAT_IOLINK_FLAGS_ENABLED;
kfd_set_iolink_no_atomics(peer_dev, dev, inbound_link);
kfd_set_iolink_non_coherent(peer_dev, link, inbound_link);
}
}
}