drm/amdkfd: New IOCTL to allocate queue GWS
Add a new kfd ioctl to allocate queue GWS. Queue GWS is released on queue destroy. Signed-off-by: Oak Zeng <Oak.Zeng@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -1567,6 +1567,31 @@ copy_from_user_failed:
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return err;
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}
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static int kfd_ioctl_alloc_queue_gws(struct file *filep,
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struct kfd_process *p, void *data)
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{
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int retval;
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struct kfd_ioctl_alloc_queue_gws_args *args = data;
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struct kfd_dev *dev = NULL;
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if (!hws_gws_support ||
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dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
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return -EINVAL;
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dev = kfd_device_by_id(args->gpu_id);
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if (!dev) {
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pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
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return -EINVAL;
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}
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mutex_lock(&p->mutex);
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retval = pqm_set_gws(&p->pqm, args->queue_id, args->num_gws ? dev->gws : NULL);
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mutex_unlock(&p->mutex);
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args->first_gws = 0;
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return retval;
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}
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static int kfd_ioctl_get_dmabuf_info(struct file *filep,
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struct kfd_process *p, void *data)
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{
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@ -1769,6 +1794,8 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
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AMDKFD_IOCTL_DEF(AMDKFD_IOC_IMPORT_DMABUF,
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kfd_ioctl_import_dmabuf, 0),
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AMDKFD_IOCTL_DEF(AMDKFD_IOC_ALLOC_QUEUE_GWS,
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kfd_ioctl_alloc_queue_gws, 0),
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};
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#define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls)
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@ -410,6 +410,21 @@ struct kfd_ioctl_unmap_memory_from_gpu_args {
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__u32 n_success; /* to/from KFD */
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};
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/* Allocate GWS for specific queue
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*
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* @gpu_id: device identifier
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* @queue_id: queue's id that GWS is allocated for
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* @num_gws: how many GWS to allocate
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* @first_gws: index of the first GWS allocated.
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* only support contiguous GWS allocation
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*/
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struct kfd_ioctl_alloc_queue_gws_args {
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__u32 gpu_id; /* to KFD */
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__u32 queue_id; /* to KFD */
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__u32 num_gws; /* to KFD */
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__u32 first_gws; /* from KFD */
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};
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struct kfd_ioctl_get_dmabuf_info_args {
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__u64 size; /* from KFD */
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__u64 metadata_ptr; /* to KFD */
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@ -529,7 +544,10 @@ enum kfd_mmio_remap {
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#define AMDKFD_IOC_IMPORT_DMABUF \
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AMDKFD_IOWR(0x1D, struct kfd_ioctl_import_dmabuf_args)
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#define AMDKFD_IOC_ALLOC_QUEUE_GWS \
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AMDKFD_IOWR(0x1E, struct kfd_ioctl_alloc_queue_gws_args)
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#define AMDKFD_COMMAND_START 0x01
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#define AMDKFD_COMMAND_END 0x1E
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#define AMDKFD_COMMAND_END 0x1F
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#endif
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