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From 8c39f7199fd044f38a97b9f6e30dfbb593581562 Mon Sep 17 00:00:00 2001
From: Felix Kuehling <Felix.Kuehling@amd.com>
Date: Wed, 2 Jan 2019 14:52:13 -0500
Subject: [PATCH 2734/2940] drm/amdkfd: Allow building KFD on ARM64 (v2)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
ifdef x86_64 specific code.
Allow enabling CONFIG_HSA_AMD on ARM64.
v2: Fixed a compiler warning due to an unused variable
CC: Mark Nutter <Mark.Nutter@arm.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Mark Nutter <Mark.Nutter@arm.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdkfd/Kconfig | 5 ++---
drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 8 ++++++++
drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 9 +++++----
3 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/Kconfig b/drivers/gpu/drm/amd/amdkfd/Kconfig
index 94cbfbcbda4f..2ddd92bb49af 100644
--- a/drivers/gpu/drm/amd/amdkfd/Kconfig
+++ b/drivers/gpu/drm/amd/amdkfd/Kconfig
@@ -4,9 +4,8 @@
config HSA_AMD
bool "HSA kernel driver for AMD GPU devices"
- depends on (DRM_RADEON || DRM_AMDGPU) && (X86_64 || PPC64 || ARM64)
- select DRM_AMDGPU_USERPTR
- imply AMD_IOMMU_V2
+ depends on DRM_AMDGPU && (X86_64 || PPC64 || ARM64)
+ imply AMD_IOMMU_V2 if X86_64
select MMU_NOTIFIER
help
Enable this if you want to use HSA features on AMD GPU devices.
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index c02adbbeef2a..d7ddb352bd8f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -863,6 +863,7 @@ static int kfd_fill_mem_info_for_cpu(int numa_node_id, int *avail_size,
return 0;
}
+#if CONFIG_X86_64
static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size,
uint32_t *num_entries,
struct crat_subtype_iolink *sub_type_hdr)
@@ -905,6 +906,7 @@ static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size,
return 0;
}
+#endif
/* kfd_create_vcrat_image_cpu - Create Virtual CRAT for CPU
*
@@ -920,7 +922,9 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size)
struct crat_subtype_generic *sub_type_hdr;
int avail_size = *size;
int numa_node_id;
+#ifdef CONFIG_X86_64
uint32_t entries = 0;
+#endif
int ret = 0;
if (!pcrat_image || avail_size < VCRAT_SIZE_FOR_CPU)
@@ -982,6 +986,7 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size)
sub_type_hdr->length);
/* Fill in Subtype: IO Link */
+#ifdef CONFIG_X86_64
ret = kfd_fill_iolink_info_for_cpu(numa_node_id, &avail_size,
&entries,
(struct crat_subtype_iolink *)sub_type_hdr);
@@ -992,6 +997,9 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size)
sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr +
sub_type_hdr->length * entries);
+#else
+ pr_info("IO link not available for non x86 platforms\n");
+#endif
crat_table->num_domains++;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 5f5b2acedbac..4734f1a35516 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1392,7 +1392,6 @@ int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
{
- const struct cpuinfo_x86 *cpuinfo;
int first_cpu_of_numa_node;
if (!cpumask || cpumask == cpu_none_mask)
@@ -1400,9 +1399,11 @@ static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
first_cpu_of_numa_node = cpumask_first(cpumask);
if (first_cpu_of_numa_node >= nr_cpu_ids)
return -1;
- cpuinfo = &cpu_data(first_cpu_of_numa_node);
-
- return cpuinfo->apicid;
+#ifdef CONFIG_X86_64
+ return cpu_data(first_cpu_of_numa_node).apicid;
+#else
+ return first_cpu_of_numa_node;
+#endif
}
/* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
--
2.17.1
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