145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
|
|
* All Rights Reserved.
|
|
*
|
|
* 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 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.
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
*
|
|
**************************************************************************/
|
|
/*
|
|
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
|
|
*/
|
|
|
|
#include "drmP.h"
|
|
#include "drm.h"
|
|
#include "i915_drm.h"
|
|
#include "i915_drv.h"
|
|
|
|
/*
|
|
* Implements an intel sync flush operation.
|
|
*/
|
|
|
|
static void i915_perform_flush(drm_device_t * dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
|
|
drm_fence_manager_t *fm = &dev->fm;
|
|
drm_fence_driver_t *driver = dev->driver->fence_driver;
|
|
uint32_t flush_flags = 0;
|
|
uint32_t flush_sequence = 0;
|
|
uint32_t i_status;
|
|
uint32_t diff;
|
|
uint32_t sequence;
|
|
|
|
if (!dev_priv)
|
|
return;
|
|
|
|
if (fm->pending_exe_flush) {
|
|
sequence = READ_BREADCRUMB(dev_priv);
|
|
|
|
/*
|
|
* First update fences with the current breadcrumb.
|
|
*/
|
|
|
|
diff = sequence - fm->last_exe_flush;
|
|
if (diff < driver->wrap_diff && diff != 0) {
|
|
drm_fence_handler(dev, sequence, DRM_FENCE_TYPE_EXE);
|
|
}
|
|
|
|
diff = sequence - fm->exe_flush_sequence;
|
|
if (diff < driver->wrap_diff) {
|
|
fm->pending_exe_flush = 0;
|
|
if (dev_priv->fence_irq_on) {
|
|
i915_user_irq_off(dev_priv);
|
|
dev_priv->fence_irq_on = 0;
|
|
}
|
|
} else if (!dev_priv->fence_irq_on) {
|
|
i915_user_irq_on(dev_priv);
|
|
dev_priv->fence_irq_on = 1;
|
|
}
|
|
}
|
|
|
|
if (dev_priv->flush_pending) {
|
|
i_status = READ_HWSP(dev_priv, 0);
|
|
if ((i_status & (1 << 12)) !=
|
|
(dev_priv->saved_flush_status & (1 << 12))) {
|
|
flush_flags = dev_priv->flush_flags;
|
|
flush_sequence = dev_priv->flush_sequence;
|
|
dev_priv->flush_pending = 0;
|
|
drm_fence_handler(dev, flush_sequence, flush_flags);
|
|
}
|
|
}
|
|
|
|
if (fm->pending_flush && !dev_priv->flush_pending) {
|
|
dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv);
|
|
dev_priv->flush_flags = fm->pending_flush;
|
|
dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0);
|
|
I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21));
|
|
dev_priv->flush_pending = 1;
|
|
fm->pending_flush = 0;
|
|
}
|
|
|
|
if (dev_priv->flush_pending) {
|
|
i_status = READ_HWSP(dev_priv, 0);
|
|
if ((i_status & (1 << 12)) !=
|
|
(dev_priv->saved_flush_status & (1 << 12))) {
|
|
flush_flags = dev_priv->flush_flags;
|
|
flush_sequence = dev_priv->flush_sequence;
|
|
dev_priv->flush_pending = 0;
|
|
drm_fence_handler(dev, flush_sequence, flush_flags);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void i915_poke_flush(drm_device_t * dev)
|
|
{
|
|
drm_fence_manager_t *fm = &dev->fm;
|
|
unsigned long flags;
|
|
|
|
write_lock_irqsave(&fm->lock, flags);
|
|
i915_perform_flush(dev);
|
|
write_unlock_irqrestore(&fm->lock, flags);
|
|
}
|
|
|
|
int i915_fence_emit_sequence(drm_device_t * dev, uint32_t flags,
|
|
uint32_t * sequence, uint32_t *native_type)
|
|
{
|
|
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
|
|
i915_emit_irq(dev);
|
|
*sequence = (uint32_t) dev_priv->counter;
|
|
*native_type = DRM_FENCE_TYPE_EXE;
|
|
if (flags & DRM_I915_FENCE_FLAG_FLUSHED)
|
|
*native_type |= DRM_I915_FENCE_TYPE_RW;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void i915_fence_handler(drm_device_t * dev)
|
|
{
|
|
drm_fence_manager_t *fm = &dev->fm;
|
|
|
|
write_lock(&fm->lock);
|
|
i915_perform_flush(dev);
|
|
write_unlock(&fm->lock);
|
|
}
|
|
|