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Diffstat (limited to 'linux-core/i915_fence.c')
-rw-r--r--linux-core/i915_fence.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/linux-core/i915_fence.c b/linux-core/i915_fence.c
deleted file mode 100644
index 45613c3a..00000000
--- a/linux-core/i915_fence.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/**************************************************************************
- *
- * 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"
-
-/*
- * Initiate a sync flush if it's not already pending.
- */
-
-static inline void i915_initiate_rwflush(struct drm_i915_private *dev_priv,
- struct drm_fence_class_manager *fc)
-{
- if ((fc->pending_flush & DRM_I915_FENCE_TYPE_RW) &&
- !dev_priv->flush_pending) {
- dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv);
- dev_priv->flush_flags = fc->pending_flush;
- dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0);
- I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
- dev_priv->flush_pending = 1;
- fc->pending_flush &= ~DRM_I915_FENCE_TYPE_RW;
- }
-}
-
-static inline void i915_report_rwflush(struct drm_device *dev,
- struct drm_i915_private *dev_priv)
-{
- if (unlikely(dev_priv->flush_pending)) {
-
- uint32_t flush_flags;
- uint32_t i_status;
- uint32_t flush_sequence;
-
- 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, 0, flush_sequence,
- flush_flags, 0);
- }
- }
-}
-
-static void i915_fence_flush(struct drm_device *dev,
- uint32_t fence_class)
-{
- struct drm_i915_private *dev_priv =
- (struct drm_i915_private *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- struct drm_fence_class_manager *fc = &fm->fence_class[0];
- unsigned long irq_flags;
-
- if (unlikely(!dev_priv))
- return;
-
- write_lock_irqsave(&fm->lock, irq_flags);
- i915_initiate_rwflush(dev_priv, fc);
- write_unlock_irqrestore(&fm->lock, irq_flags);
-}
-
-
-static void i915_fence_poll(struct drm_device *dev, uint32_t fence_class,
- uint32_t waiting_types)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- struct drm_fence_class_manager *fc = &fm->fence_class[0];
- uint32_t sequence;
-
- if (unlikely(!dev_priv))
- return;
-
- /*
- * First, report any executed sync flush:
- */
-
- i915_report_rwflush(dev, dev_priv);
-
- /*
- * Report A new breadcrumb, and adjust IRQs.
- */
-
- if (waiting_types & DRM_FENCE_TYPE_EXE) {
-
- sequence = READ_BREADCRUMB(dev_priv);
- drm_fence_handler(dev, 0, sequence,
- DRM_FENCE_TYPE_EXE, 0);
-
- if (dev_priv->fence_irq_on &&
- !(fc->waiting_types & DRM_FENCE_TYPE_EXE)) {
- i915_user_irq_off(dev_priv);
- dev_priv->fence_irq_on = 0;
- } else if (!dev_priv->fence_irq_on &&
- (fc->waiting_types & DRM_FENCE_TYPE_EXE)) {
- i915_user_irq_on(dev_priv);
- dev_priv->fence_irq_on = 1;
- }
- }
-
- /*
- * There may be new RW flushes pending. Start them.
- */
-
- i915_initiate_rwflush(dev_priv, fc);
-
- /*
- * And possibly, but unlikely, they finish immediately.
- */
-
- i915_report_rwflush(dev, dev_priv);
-
-}
-
-static int i915_fence_emit_sequence(struct drm_device *dev, uint32_t class,
- uint32_t flags, uint32_t *sequence,
- uint32_t *native_type)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- if (unlikely(!dev_priv))
- return -EINVAL;
-
- 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(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = (struct drm_i915_private *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- struct drm_fence_class_manager *fc = &fm->fence_class[0];
-
- write_lock(&fm->lock);
- if (likely(dev_priv->fence_irq_on))
- i915_fence_poll(dev, 0, fc->waiting_types);
- write_unlock(&fm->lock);
-}
-
-/*
- * We need a separate wait function since we need to poll for
- * sync flushes.
- */
-
-static int i915_fence_wait(struct drm_fence_object *fence,
- int lazy, int interruptible, uint32_t mask)
-{
- struct drm_device *dev = fence->dev;
- drm_i915_private_t *dev_priv = (struct drm_i915_private *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- struct drm_fence_class_manager *fc = &fm->fence_class[0];
- int ret;
- unsigned long _end = jiffies + 3 * DRM_HZ;
-
- drm_fence_object_flush(fence, mask);
- if (likely(interruptible))
- ret = wait_event_interruptible_timeout
- (fc->fence_queue, drm_fence_object_signaled(fence, DRM_FENCE_TYPE_EXE),
- 3 * DRM_HZ);
- else
- ret = wait_event_timeout
- (fc->fence_queue, drm_fence_object_signaled(fence, DRM_FENCE_TYPE_EXE),
- 3 * DRM_HZ);
-
- if (unlikely(ret == -ERESTARTSYS))
- return -EAGAIN;
-
- if (unlikely(ret == 0))
- return -EBUSY;
-
- if (likely(mask == DRM_FENCE_TYPE_EXE ||
- drm_fence_object_signaled(fence, mask)))
- return 0;
-
- /*
- * Remove this code snippet when fixed. HWSTAM doesn't let
- * flush info through...
- */
-
- if (unlikely(dev_priv && !dev_priv->irq_enabled)) {
- unsigned long irq_flags;
-
- DRM_ERROR("X server disabled IRQs before releasing frame buffer.\n");
- msleep(100);
- dev_priv->flush_pending = 0;
- write_lock_irqsave(&fm->lock, irq_flags);
- drm_fence_handler(dev, fence->fence_class,
- fence->sequence, fence->type, 0);
- write_unlock_irqrestore(&fm->lock, irq_flags);
- }
-
- /*
- * Poll for sync flush completion.
- */
-
- return drm_fence_wait_polling(fence, lazy, interruptible, mask, _end);
-}
-
-static uint32_t i915_fence_needed_flush(struct drm_fence_object *fence)
-{
- uint32_t flush_flags = fence->waiting_types &
- ~(DRM_FENCE_TYPE_EXE | fence->signaled_types);
-
- if (likely(flush_flags == 0 ||
- ((flush_flags & ~fence->native_types) == 0) ||
- (fence->signaled_types != DRM_FENCE_TYPE_EXE)))
- return 0;
- else {
- struct drm_device *dev = fence->dev;
- struct drm_i915_private *dev_priv = (struct drm_i915_private *) dev->dev_private;
- struct drm_fence_driver *driver = dev->driver->fence_driver;
-
- if (unlikely(!dev_priv))
- return 0;
-
- if (dev_priv->flush_pending) {
- uint32_t diff = (dev_priv->flush_sequence - fence->sequence) &
- driver->sequence_mask;
-
- if (diff < driver->wrap_diff)
- return 0;
- }
- }
- return flush_flags;
-}
-
-struct drm_fence_driver i915_fence_driver = {
- .num_classes = 1,
- .wrap_diff = (1U << (BREADCRUMB_BITS - 1)),
- .flush_diff = (1U << (BREADCRUMB_BITS - 2)),
- .sequence_mask = BREADCRUMB_MASK,
- .has_irq = NULL,
- .emit = i915_fence_emit_sequence,
- .flush = i915_fence_flush,
- .poll = i915_fence_poll,
- .needed_flush = i915_fence_needed_flush,
- .wait = i915_fence_wait,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 19:21:39 +0000