diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_marker.c')
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_marker.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c deleted file mode 100644 index e53bc639a754..000000000000 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c +++ /dev/null @@ -1,155 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 OR MIT -/************************************************************************** - * - * Copyright 2010 VMware, Inc., Palo Alto, CA., USA - * - * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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 "vmwgfx_drv.h" - -struct vmw_marker { - struct list_head head; - uint32_t seqno; - u64 submitted; -}; - -void vmw_marker_queue_init(struct vmw_marker_queue *queue) -{ - INIT_LIST_HEAD(&queue->head); - queue->lag = 0; - queue->lag_time = ktime_get_raw_ns(); - spin_lock_init(&queue->lock); -} - -void vmw_marker_queue_takedown(struct vmw_marker_queue *queue) -{ - struct vmw_marker *marker, *next; - - spin_lock(&queue->lock); - list_for_each_entry_safe(marker, next, &queue->head, head) { - kfree(marker); - } - spin_unlock(&queue->lock); -} - -int vmw_marker_push(struct vmw_marker_queue *queue, - uint32_t seqno) -{ - struct vmw_marker *marker = kmalloc(sizeof(*marker), GFP_KERNEL); - - if (unlikely(!marker)) - return -ENOMEM; - - marker->seqno = seqno; - marker->submitted = ktime_get_raw_ns(); - spin_lock(&queue->lock); - list_add_tail(&marker->head, &queue->head); - spin_unlock(&queue->lock); - - return 0; -} - -int vmw_marker_pull(struct vmw_marker_queue *queue, - uint32_t signaled_seqno) -{ - struct vmw_marker *marker, *next; - bool updated = false; - u64 now; - - spin_lock(&queue->lock); - now = ktime_get_raw_ns(); - - if (list_empty(&queue->head)) { - queue->lag = 0; - queue->lag_time = now; - updated = true; - goto out_unlock; - } - - list_for_each_entry_safe(marker, next, &queue->head, head) { - if (signaled_seqno - marker->seqno > (1 << 30)) - continue; - - queue->lag = now - marker->submitted; - queue->lag_time = now; - updated = true; - list_del(&marker->head); - kfree(marker); - } - -out_unlock: - spin_unlock(&queue->lock); - - return (updated) ? 0 : -EBUSY; -} - -static u64 vmw_fifo_lag(struct vmw_marker_queue *queue) -{ - u64 now; - - spin_lock(&queue->lock); - now = ktime_get_raw_ns(); - queue->lag += now - queue->lag_time; - queue->lag_time = now; - spin_unlock(&queue->lock); - return queue->lag; -} - - -static bool vmw_lag_lt(struct vmw_marker_queue *queue, - uint32_t us) -{ - u64 cond = (u64) us * NSEC_PER_USEC; - - return vmw_fifo_lag(queue) <= cond; -} - -int vmw_wait_lag(struct vmw_private *dev_priv, - struct vmw_marker_queue *queue, uint32_t us) -{ - struct vmw_marker *marker; - uint32_t seqno; - int ret; - - while (!vmw_lag_lt(queue, us)) { - spin_lock(&queue->lock); - if (list_empty(&queue->head)) - seqno = atomic_read(&dev_priv->marker_seq); - else { - marker = list_first_entry(&queue->head, - struct vmw_marker, head); - seqno = marker->seqno; - } - spin_unlock(&queue->lock); - - ret = vmw_wait_seqno(dev_priv, false, seqno, true, - 3*HZ); - - if (unlikely(ret != 0)) - return ret; - - (void) vmw_marker_pull(queue, seqno); - } - return 0; -} |