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drm/i915: restore gtt on resume in the drm instead of in intel-gtt.ko 

This still uses the agp functions to actually reinstate the mappings
(with a gross hack to make agp cooperate), but it wires everything
up correctly for the switchover.

The call to agp_rebind_memory can be dropped because all non-kms drivers
do all their rebinding on EnterVT.

v2: Be more paranoid and flush the chipset cache after restoring gtt
mappings.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Daniel Vetter 2010-11-05 22:23:30 +01:00 committed by Chris Wilson
parent 93a37f20ea
commit 76aaf22016
5 changed files with 54 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/char/agp/intel-agp.c
View File

@ -828,14 +828,9 @@ static void __devexit agp_intel_remove(struct pci_dev *pdev)
static int agp_intel_resume(struct pci_dev *pdev)
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
int ret_val;
bridge->driver->configure();
ret_val = agp_rebind_memory();
if (ret_val != 0)
return ret_val;
return 0;
}
#endif

1
drivers/gpu/drm/i915/Makefile
View File

@ -8,6 +8,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
i915_suspend.o \
i915_gem.o \
i915_gem_debug.o \
i915_gem_gtt.o \
i915_gem_evict.o \
i915_gem_tiling.o \
i915_trace_points.o \

1
drivers/gpu/drm/i915/i915_drv.c
View File

@ -310,6 +310,7 @@ static int i915_drm_thaw(struct drm_device *dev)
/* KMS EnterVT equivalent */
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
mutex_lock(&dev->struct_mutex);
i915_gem_restore_gtt_mappings(dev);
dev_priv->mm.suspended = 0;
error = i915_gem_init_ringbuffer(dev);

3
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1141,6 +1141,9 @@ void i915_gem_detach_phys_object(struct drm_device *dev,
void i915_gem_free_all_phys_object(struct drm_device *dev);
void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv);
/* i915_gem_gtt.c */
void i915_gem_restore_gtt_mappings(struct drm_device *dev);
/* i915_gem_evict.c */
int i915_gem_evict_something(struct drm_device *dev, int min_size,
unsigned alignment, bool mappable);

49
drivers/gpu/drm/i915/i915_gem_gtt.c Normal file
View File

@ -0,0 +1,49 @@
/*
* Copyright © 2010 Daniel Vetter
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "drmP.h"
#include "drm.h"
#include "i915_drm.h"
#include "i915_drv.h"
#include "i915_trace.h"
#include "intel_drv.h"
void i915_gem_restore_gtt_mappings(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv;
int ret;
list_for_each_entry(obj_priv,
&dev_priv->mm.gtt_list,
gtt_list) {
/* Hack to force agp to reinsert buffer object. */
obj_priv->agp_mem->is_bound = false;
ret = agp_bind_memory(obj_priv->agp_mem, obj_priv->gtt_space->start / PAGE_SIZE);
BUG_ON(ret != 0);
}
/* Be paranoid and flush the chipset cache. */
intel_gtt_chipset_flush();
}