static int dbgdev_register_diq(struct kfd_dbgdev *dbgdev)
{
struct queue_properties properties;
unsigned int qid;
struct kernel_queue *kq = NULL;
int status;
BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->dev);
status = pqm_create_queue(dbgdev->pqm, dbgdev->dev, NULL,
&properties, 0, KFD_QUEUE_TYPE_DIQ,
&qid);
if (status) {
pr_err("amdkfd: Failed to create DIQ\n");
return status;
}
pr_debug("DIQ Created with queue id: %d\n", qid);
kq = pqm_get_kernel_queue(dbgdev->pqm, qid);
if (kq == NULL) {
pr_err("amdkfd: Error getting DIQ\n");
pqm_destroy_queue(dbgdev->pqm, qid);
return -EFAULT;
}
dbgdev->kq = kq;
return status;
}
static int dbgdev_unregister_diq(struct kfd_dbgdev *dbgdev)
{
/* todo - disable address watch */
int status;
BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->kq);
status = pqm_destroy_queue(dbgdev->pqm,
dbgdev->kq->queue->properties.queue_id);
dbgdev->kq = NULL;
return status;
}
static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p,
void *data)
{
int retval;
struct kfd_ioctl_destroy_queue_args *args = data;
pr_debug("kfd: destroying queue id %d for PASID %d\n",
args->queue_id,
p->pasid);
mutex_lock(&p->mutex);
retval = pqm_destroy_queue(&p->pqm, args->queue_id);
mutex_unlock(&p->mutex);
return retval;
}
static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p,
void __user *arg)
{
int retval;
struct kfd_ioctl_destroy_queue_args args;
if (copy_from_user(&args, arg, sizeof(args)))
return -EFAULT;
pr_debug("kfd: destroying queue id %d for PASID %d\n",
args.queue_id,
p->pasid);
mutex_lock(&p->mutex);
retval = pqm_destroy_queue(&p->pqm, args.queue_id);
mutex_unlock(&p->mutex);
return retval;
}
static long kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
void __user *arg)
{
struct kfd_ioctl_create_queue_args args;
struct kfd_dev *dev;
int err = 0;
unsigned int queue_id;
struct kfd_process_device *pdd;
struct queue_properties q_properties;
memset(&q_properties, 0, sizeof(struct queue_properties));
if (copy_from_user(&args, arg, sizeof(args)))
return -EFAULT;
pr_debug("kfd: creating queue ioctl\n");
err = set_queue_properties_from_user(&q_properties, &args);
if (err)
return err;
dev = kfd_device_by_id(args.gpu_id);
if (dev == NULL)
return -EINVAL;
mutex_lock(&p->mutex);
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
err = PTR_ERR(pdd);
goto err_bind_process;
}
pr_debug("kfd: creating queue for PASID %d on GPU 0x%x\n",
p->pasid,
dev->id);
err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, 0,
KFD_QUEUE_TYPE_COMPUTE, &queue_id);
if (err != 0)
goto err_create_queue;
args.queue_id = queue_id;
/* Return gpu_id as doorbell offset for mmap usage */
args.doorbell_offset = args.gpu_id << PAGE_SHIFT;
if (copy_to_user(arg, &args, sizeof(args))) {
err = -EFAULT;
goto err_copy_args_out;
}
mutex_unlock(&p->mutex);
pr_debug("kfd: queue id %d was created successfully\n", args.queue_id);
pr_debug("ring buffer address == 0x%016llX\n",
args.ring_base_address);
pr_debug("read ptr address == 0x%016llX\n",
args.read_pointer_address);
pr_debug("write ptr address == 0x%016llX\n",
args.write_pointer_address);
return 0;
err_copy_args_out:
pqm_destroy_queue(&p->pqm, queue_id);
err_create_queue:
err_bind_process:
mutex_unlock(&p->mutex);
return err;
}
