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Diffstat (limited to 'linux-core/drm_fence.c')
-rw-r--r--linux-core/drm_fence.c114
1 files changed, 63 insertions, 51 deletions
diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c
index 06d48255..3ccfdcb8 100644
--- a/linux-core/drm_fence.c
+++ b/linux-core/drm_fence.c
@@ -1,6 +1,6 @@
/**************************************************************************
*
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * Copyright (c) 2006-2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -11,6 +11,10 @@
* 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
@@ -19,11 +23,6 @@
* 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>
@@ -35,7 +34,8 @@
* Typically called by the IRQ handler.
*/
-void drm_fence_handler(drm_device_t * dev, uint32_t sequence, uint32_t type)
+void drm_fence_handler(drm_device_t * dev, uint32_t class,
+ uint32_t sequence, uint32_t type)
{
int wake = 0;
uint32_t diff;
@@ -147,7 +147,7 @@ static void drm_fence_object_destroy(drm_file_t * priv,
drm_fence_usage_deref_locked(dev, fence);
}
-static int fence_signaled(drm_device_t * dev, volatile
+static int fence_signaled(drm_device_t * dev,
drm_fence_object_t * fence,
uint32_t mask, int poke_flush)
{
@@ -157,7 +157,7 @@ static int fence_signaled(drm_device_t * dev, volatile
drm_fence_driver_t *driver = dev->driver->fence_driver;
if (poke_flush)
- driver->poke_flush(dev);
+ driver->poke_flush(dev, fence->class);
read_lock_irqsave(&fm->lock, flags);
signaled =
(fence->type & mask & fence->signaled) == (fence->type & mask);
@@ -172,13 +172,12 @@ static void drm_fence_flush_exe(drm_fence_manager_t * fm,
uint32_t diff;
if (!fm->pending_exe_flush) {
- volatile struct list_head *list;
+ struct list_head *list;
/*
* Last_exe_flush is invalid. Find oldest sequence.
*/
-/* list = fm->fence_types[_DRM_FENCE_TYPE_EXE];*/
list = &fm->ring;
if (list->next == &fm->ring) {
return;
@@ -202,14 +201,15 @@ static void drm_fence_flush_exe(drm_fence_manager_t * fm,
}
}
-int drm_fence_object_signaled(volatile drm_fence_object_t * fence,
+int drm_fence_object_signaled(drm_fence_object_t * fence,
uint32_t type)
{
return ((fence->signaled & type) == type);
}
int drm_fence_object_flush(drm_device_t * dev,
- volatile drm_fence_object_t * fence, uint32_t type)
+ drm_fence_object_t * fence,
+ uint32_t type)
{
drm_fence_manager_t *fm = &dev->fm;
drm_fence_driver_t *driver = dev->driver->fence_driver;
@@ -235,7 +235,7 @@ int drm_fence_object_flush(drm_device_t * dev,
}
}
write_unlock_irqrestore(&fm->lock, flags);
- driver->poke_flush(dev);
+ driver->poke_flush(dev, fence->class);
return 0;
}
@@ -274,11 +274,37 @@ void drm_fence_flush_old(drm_device_t * dev, uint32_t sequence)
EXPORT_SYMBOL(drm_fence_flush_old);
+static int drm_fence_lazy_wait(drm_device_t *dev,
+ drm_fence_object_t *fence,
+ int ignore_signals, uint32_t mask)
+{
+ drm_fence_manager_t *fm = &dev->fm;
+ unsigned long _end = jiffies + 3*DRM_HZ;
+ int ret = 0;
+
+ do {
+ DRM_WAIT_ON(ret, fm->fence_queue, 3 * DRM_HZ,
+ fence_signaled(dev, fence, mask, 1));
+ if (time_after_eq(jiffies, _end))
+ break;
+ } while (ret == -EINTR && ignore_signals);
+ if (time_after_eq(jiffies, _end) && (ret != 0))
+ ret = -EBUSY;
+ if (ret) {
+ if (ret == -EBUSY) {
+ DRM_ERROR("Fence timeout. "
+ "GPU lockup or fence driver was "
+ "taken down.\n");
+ }
+ return ((ret == -EINTR) ? -EAGAIN : ret);
+ }
+ return 0;
+}
+
int drm_fence_object_wait(drm_device_t * dev,
- volatile drm_fence_object_t * fence,
+ drm_fence_object_t * fence,
int lazy, int ignore_signals, uint32_t mask)
{
- drm_fence_manager_t *fm = &dev->fm;
drm_fence_driver_t *driver = dev->driver->fence_driver;
int ret = 0;
unsigned long _end;
@@ -299,46 +325,32 @@ int drm_fence_object_wait(drm_device_t * dev,
if (lazy && driver->lazy_capable) {
- do {
- DRM_WAIT_ON(ret, fm->fence_queue, 3 * DRM_HZ,
- fence_signaled(dev, fence, mask, 1));
- if (time_after_eq(jiffies, _end))
- break;
- } while (ret == -EINTR && ignore_signals);
- if (time_after_eq(jiffies, _end) && (ret != 0))
- ret = -EBUSY;
- if (ret) {
- if (ret == -EBUSY) {
- DRM_ERROR("Fence timeout. "
- "GPU lockup or fence driver was "
- "taken down.\n");
- }
- return ((ret == -EINTR) ? -EAGAIN : ret);
- }
- } else if ((fence->class == 0) && (mask & DRM_FENCE_TYPE_EXE) &&
- driver->lazy_capable) {
+ ret = drm_fence_lazy_wait(dev, fence, ignore_signals, mask);
+ if (ret)
+ return ret;
- /*
- * We use IRQ wait for EXE fence if available to gain
- * CPU in some cases.
- */
+ } else {
- do {
- DRM_WAIT_ON(ret, fm->fence_queue, 3 * DRM_HZ,
- fence_signaled(dev, fence,
- DRM_FENCE_TYPE_EXE, 1));
- if (time_after_eq(jiffies, _end))
- break;
- } while (ret == -EINTR && ignore_signals);
- if (time_after_eq(jiffies, _end) && (ret != 0))
- ret = -EBUSY;
- if (ret)
- return ((ret == -EINTR) ? -EAGAIN : ret);
- }
+ if (driver->has_irq(dev, fence->class,
+ DRM_FENCE_TYPE_EXE)) {
+ ret = drm_fence_lazy_wait(dev, fence, ignore_signals,
+ DRM_FENCE_TYPE_EXE);
+ if (ret)
+ return ret;
+ }
+ if (driver->has_irq(dev, fence->class,
+ mask & ~DRM_FENCE_TYPE_EXE)) {
+ ret = drm_fence_lazy_wait(dev, fence, ignore_signals,
+ mask);
+ if (ret)
+ return ret;
+ }
+ }
if (fence_signaled(dev, fence, mask, 0))
return 0;
+ DRM_ERROR("Busy wait\n");
/*
* Avoid kernel-space busy-waits.
*/
@@ -368,7 +380,7 @@ int drm_fence_object_emit(drm_device_t * dev, drm_fence_object_t * fence,
int ret;
drm_fence_unring(dev, &fence->ring);
- ret = driver->emit(dev, fence_flags, &sequence, &native_type);
+ ret = driver->emit(dev, fence->class, fence_flags, &sequence, &native_type);
if (ret)
return ret;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 10:39:36 +0000