From e06b71b2313a00579ba64a1cc43ad29d64cb8d4c Mon Sep 17 00:00:00 2001 From: Jonathan Kim Date: Tue, 21 May 2024 13:22:15 -0400 Subject: drm/amdkfd: allow users to target recommended SDMA engines Certain GPUs have better copy performance over xGMI on specific SDMA engines depending on the source and destination GPU. Allow users to create SDMA queues on these recommended engines. Close to 2x overall performance has been observed with this optimization. Signed-off-by: Jonathan Kim Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- include/uapi/linux/kfd_ioctl.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h index 285a36601dc9..71a7ce5f2d4c 100644 --- a/include/uapi/linux/kfd_ioctl.h +++ b/include/uapi/linux/kfd_ioctl.h @@ -42,9 +42,10 @@ * - 1.14 - Update kfd_event_data * - 1.15 - Enable managing mappings in compute VMs with GEM_VA ioctl * - 1.16 - Add contiguous VRAM allocation flag + * - 1.17 - Add SDMA queue creation with target SDMA engine ID */ #define KFD_IOCTL_MAJOR_VERSION 1 -#define KFD_IOCTL_MINOR_VERSION 16 +#define KFD_IOCTL_MINOR_VERSION 17 struct kfd_ioctl_get_version_args { __u32 major_version; /* from KFD */ @@ -56,6 +57,7 @@ struct kfd_ioctl_get_version_args { #define KFD_IOC_QUEUE_TYPE_SDMA 0x1 #define KFD_IOC_QUEUE_TYPE_COMPUTE_AQL 0x2 #define KFD_IOC_QUEUE_TYPE_SDMA_XGMI 0x3 +#define KFD_IOC_QUEUE_TYPE_SDMA_BY_ENG_ID 0x4 #define KFD_MAX_QUEUE_PERCENTAGE 100 #define KFD_MAX_QUEUE_PRIORITY 15 @@ -78,6 +80,8 @@ struct kfd_ioctl_create_queue_args { __u64 ctx_save_restore_address; /* to KFD */ __u32 ctx_save_restore_size; /* to KFD */ __u32 ctl_stack_size; /* to KFD */ + __u32 sdma_engine_id; /* to KFD */ + __u32 pad; }; struct kfd_ioctl_destroy_queue_args { -- cgit v1.2.3