[PATCH] Revert "drm/amdkfd: New IOCTL to allocate queue GWS"

[Alex Deucher]

This reverts commit 1a058c3376765ee31d65e28cbbb9d4ff15120056.

This interface is still in too much flux.  Revert until
it's sorted out.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 28 ------------------------
 include/uapi/linux/kfd_ioctl.h           | 20 +----------------
 2 files changed, 1 insertion(+), 47 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 26b15cc56c31..1d3cd5c50d5f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1567,32 +1567,6 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
 	return err;
 }
 
-static int kfd_ioctl_alloc_queue_gws(struct file *filep,
-		struct kfd_process *p, void *data)
-{
-	int retval;
-	struct kfd_ioctl_alloc_queue_gws_args *args = data;
-	struct kfd_dev *dev;
-
-	if (!hws_gws_support)
-		return -ENODEV;
-
-	dev = kfd_device_by_id(args->gpu_id);
-	if (!dev) {
-		pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
-		return -ENODEV;
-	}
-	if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
-		return -ENODEV;
-
-	mutex_lock(&p->mutex);
-	retval = pqm_set_gws(&p->pqm, args->queue_id, args->num_gws ? dev->gws : NULL);
-	mutex_unlock(&p->mutex);
-
-	args->first_gws = 0;
-	return retval;
-}
-
 static int kfd_ioctl_get_dmabuf_info(struct file *filep,
 		struct kfd_process *p, void *data)
 {
@@ -1795,8 +1769,6 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
 	AMDKFD_IOCTL_DEF(AMDKFD_IOC_IMPORT_DMABUF,
 				kfd_ioctl_import_dmabuf, 0),
 
-	AMDKFD_IOCTL_DEF(AMDKFD_IOC_ALLOC_QUEUE_GWS,
-			kfd_ioctl_alloc_queue_gws, 0),
 };
 
 #define AMDKFD_CORE_IOCTL_COUNT	ARRAY_SIZE(amdkfd_ioctls)
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index 070d1bc7e725..20917c59f39c 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -410,21 +410,6 @@ struct kfd_ioctl_unmap_memory_from_gpu_args {
 	__u32 n_success;		/* to/from KFD */
 };
 
-/* Allocate GWS for specific queue
- *
- * @gpu_id:      device identifier
- * @queue_id:    queue's id that GWS is allocated for
- * @num_gws:     how many GWS to allocate
- * @first_gws:   index of the first GWS allocated.
- *               only support contiguous GWS allocation
- */
-struct kfd_ioctl_alloc_queue_gws_args {
-	__u32 gpu_id;		/* to KFD */
-	__u32 queue_id;		/* to KFD */
-	__u32 num_gws;		/* to KFD */
-	__u32 first_gws;	/* from KFD */
-};
-
 struct kfd_ioctl_get_dmabuf_info_args {
 	__u64 size;		/* from KFD */
 	__u64 metadata_ptr;	/* to KFD */
@@ -544,10 +529,7 @@ enum kfd_mmio_remap {
 #define AMDKFD_IOC_IMPORT_DMABUF		\
 		AMDKFD_IOWR(0x1D, struct kfd_ioctl_import_dmabuf_args)
 
-#define AMDKFD_IOC_ALLOC_QUEUE_GWS		\
-		AMDKFD_IOWR(0x1E, struct kfd_ioctl_alloc_queue_gws_args)
-
 #define AMDKFD_COMMAND_START		0x01
-#define AMDKFD_COMMAND_END		0x1F
+#define AMDKFD_COMMAND_END		0x1E
 
 #endif
-- 
2.20.1