bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdkfd: Add metadata ring buffer for compute

Browse Source 
Add support for separate ring-buffer for metadata packets when using
compute queues. Userspace application allocate the metadata ring-buffer
and the queue ring-buffer with a single allocation. The metadata
ring-buffer starts after the queue ring-buffer.

Signed-off-by: David Yat Sin <David.YatSin@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David Yat Sin
2025-03-18 19:49:55 +00:00
committed by Alex Deucher
parent d0c989a0aa
commit c51bb53d5c
5 changed files with 39 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
View File

@@ -221,6 +221,11 @@ static int set_queue_properties_from_user(struct queue_properties *q_properties,
pr_debug("Size lower. clamped to KFD_MIN_QUEUE_RING_SIZE");
}
if ((args->metadata_ring_size != 0) && !is_power_of_2(args->metadata_ring_size)) {
pr_err("Metadata ring size must be a power of 2 or 0\n");
return -EINVAL;
}
if (!access_ok((const void __user *) args->read_pointer_address,
sizeof(uint32_t))) {
pr_err("Can't access read pointer\n");
@@ -255,6 +260,9 @@ static int set_queue_properties_from_user(struct queue_properties *q_properties,
q_properties->priority = args->queue_priority;
q_properties->queue_address = args->ring_base_address;
q_properties->queue_size = args->ring_size;
if (args->queue_type == KFD_IOC_QUEUE_TYPE_COMPUTE_AQL)
q_properties->metadata_queue_size = args->metadata_ring_size;
q_properties->read_ptr = (void __user *)args->read_pointer_address;
q_properties->write_ptr = (void __user *)args->write_pointer_address;
q_properties->eop_ring_buffer_address = args->eop_buffer_address;