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/*
* Copyright © 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including
* the next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "libhsakmt.h"
#include "linux/kfd_ioctl.h"
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <math.h>
#include <stdio.h>
/* 1024 doorbells, 4 bytes each doorbell */
#define DOORBELLS_PAGE_SIZE 1024 * 4
struct queue
{
uint32_t queue_id;
uint32_t wptr;
uint32_t rptr;
};
struct process_doorbells
{
bool need_mmap;
void* doorbells;
pthread_mutex_t doorbells_mutex;
};
struct process_doorbells doorbells[] = {[0 ... (NUM_OF_SUPPORTED_GPUS-1)] = {.need_mmap = true, .doorbells = NULL, .doorbells_mutex = PTHREAD_MUTEX_INITIALIZER}};
HSAKMT_STATUS
HSAKMTAPI
hsaKmtCreateQueue(
HSAuint32 NodeId, //IN
HSA_QUEUE_TYPE Type, //IN
HSAuint32 QueuePercentage, //IN
HSA_QUEUE_PRIORITY Priority, //IN
void* QueueAddress, //IN
HSAuint64 QueueSizeInBytes, //IN
HsaEvent* Event, //IN
HsaQueueResource* QueueResource //OUT
)
{
HSAKMT_STATUS result;
uint32_t gpu_id;
int err;
void* ptr;
CHECK_KFD_OPEN();
result = validate_nodeid(NodeId, &gpu_id);
if (result != HSAKMT_STATUS_SUCCESS)
return result;
struct queue *q = malloc(sizeof(struct queue));
if (q == NULL)
{
return HSAKMT_STATUS_NO_MEMORY;
}
memset(q, 0, sizeof(*q));
struct kfd_ioctl_create_queue_args args;
memset(&args, 0, sizeof(args));
args.gpu_id = gpu_id;
switch (Type)
{
case HSA_QUEUE_COMPUTE: args.queue_type = KFD_IOC_QUEUE_TYPE_COMPUTE; break;
case HSA_QUEUE_SDMA: free(q); return HSAKMT_STATUS_NOT_IMPLEMENTED;
case HSA_QUEUE_COMPUTE_AQL: args.queue_type = KFD_IOC_QUEUE_TYPE_COMPUTE_AQL; break;
default: free(q); return HSAKMT_STATUS_INVALID_PARAMETER;
}
if (Type != HSA_QUEUE_COMPUTE_AQL)
{
QueueResource->QueueRptrValue = (uintptr_t)&q->rptr;
QueueResource->QueueWptrValue = (uintptr_t)&q->wptr;
}
args.read_pointer_address = QueueResource->QueueRptrValue;
args.write_pointer_address = QueueResource->QueueWptrValue;
args.ring_base_address = (uintptr_t)QueueAddress;
args.ring_size = QueueSizeInBytes;
args.queue_percentage = QueuePercentage;
args.queue_priority = Priority;
err = kmtIoctl(kfd_fd, AMDKFD_IOC_CREATE_QUEUE, &args);
if (err == -1)
{
free(q);
return HSAKMT_STATUS_ERROR;
}
q->queue_id = args.queue_id;
pthread_mutex_lock(&doorbells[NodeId].doorbells_mutex);
if (doorbells[NodeId].need_mmap) {
ptr = mmap(0, DOORBELLS_PAGE_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, kfd_fd, args.doorbell_offset);
if (ptr == MAP_FAILED) {
pthread_mutex_unlock(&doorbells[NodeId].doorbells_mutex);
hsaKmtDestroyQueue(q->queue_id);
return HSAKMT_STATUS_ERROR;
}
doorbells[NodeId].need_mmap = false;
doorbells[NodeId].doorbells = ptr;
}
pthread_mutex_unlock(&doorbells[NodeId].doorbells_mutex);
QueueResource->QueueId = PORT_VPTR_TO_UINT64(q);
QueueResource->Queue_DoorBell = VOID_PTR_ADD32(doorbells[NodeId].doorbells, q->queue_id);
return HSAKMT_STATUS_SUCCESS;
}
HSAKMT_STATUS
HSAKMTAPI
hsaKmtUpdateQueue(
HSA_QUEUEID QueueId, //IN
HSAuint32 QueuePercentage,//IN
HSA_QUEUE_PRIORITY Priority, //IN
void* QueueAddress, //IN
HSAuint64 QueueSize, //IN
HsaEvent* Event //IN
)
{
struct kfd_ioctl_update_queue_args arg;
struct queue *q = PORT_UINT64_TO_VPTR(QueueId);
CHECK_KFD_OPEN();
if (q == NULL)
return (HSAKMT_STATUS_INVALID_PARAMETER);
arg.queue_id = (HSAuint32)q->queue_id;
arg.ring_base_address = (uintptr_t)QueueAddress;
arg.ring_size = QueueSize;
arg.queue_percentage = QueuePercentage;
arg.queue_priority = Priority;
int err = kmtIoctl(kfd_fd, AMDKFD_IOC_UPDATE_QUEUE, &arg);
if (err == -1)
{
return HSAKMT_STATUS_ERROR;
}
return HSAKMT_STATUS_SUCCESS;
}
HSAKMT_STATUS
HSAKMTAPI
hsaKmtDestroyQueue(
HSA_QUEUEID QueueId //IN
)
{
CHECK_KFD_OPEN();
struct queue *q = PORT_UINT64_TO_VPTR(QueueId);
struct kfd_ioctl_destroy_queue_args args;
if (q == NULL)
return (HSAKMT_STATUS_INVALID_PARAMETER);
memset(&args, 0, sizeof(args));
args.queue_id = q->queue_id;
int err = kmtIoctl(kfd_fd, AMDKFD_IOC_DESTROY_QUEUE, &args);
if (err == -1)
{
return HSAKMT_STATUS_ERROR;
}
else
{
free(q);
return HSAKMT_STATUS_SUCCESS;
}
}
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