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From ea752b9af39ba414e529579dacf37c70ee726533 Mon Sep 17 00:00:00 2001
From: Amber Lin <Amber.Lin@amd.com>
Date: Mon, 16 May 2016 18:34:37 -0400
Subject: [PATCH 1133/4131] drm/amdkfd: Hawaii doesn't support atomics
Hawaii doesn't support atomics on system memory. Put this information in IO
link flags.
BUG: KFD-239
Change-Id: I5bf0e5e32ac4f2a3c9431328b68b75754e7f1d6d
Signed-off-by: Amber Lin <Amber.Lin@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 4e34ffd..8253036 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1004,6 +1004,21 @@ static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
mem->mem_clk_max = local_mem_info.mem_clk_max;
}
+static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
+{
+ struct kfd_iolink_properties *link;
+
+ if ((dev == NULL) || (dev->gpu == NULL))
+ return;
+
+ /* GPU only creates direck links so apply flags setting to all */
+ if (dev->gpu->device_info->asic_family == CHIP_HAWAII)
+ list_for_each_entry(link, &dev->io_link_props, list)
+ link->flags = CRAT_IOLINK_FLAGS_ENABLED |
+ CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
+ CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
+}
+
int kfd_topology_add_device(struct kfd_dev *gpu)
{
uint32_t gpu_id;
@@ -1086,6 +1101,7 @@ int kfd_topology_add_device(struct kfd_dev *gpu)
cpufreq_quick_get_max(0) / 1000;
kfd_fill_mem_clk_max_info(dev);
+ kfd_fill_iolink_non_crat_info(dev);
switch (dev->gpu->device_info->asic_family) {
case CHIP_KAVERI:
--
2.7.4
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