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linux/drivers/gpu/drm
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Chris Wilson 931872fcea drm/i915: Check that plane/pipe is disabled before removing the fb 
Staring at an error state such as:

PGTBL_ER: 0x00000400
    Display B: Invalid tiling
fence[0] = 05001001
    valid, x-tiled, pitch: 512, start: 0x05000000, size: 1048576
Pinned [2]:
  00000000   131072 0001 0001 00000000 P uncached
  00020000  4096000 0041 0000 00000000 P uncached (name: 1)
Plane [1]:
  CNTR: c0000000 # enabled | gamma
  STRIDE: 00001400
  SIZE: 03ff04ff
  POS: 00000000
  ADDR: 05000000

Suggests that we did not clear the DSPBCNTR prior to unpinning the
framebuffer and reusing the GTT space. Impossible! Unless our DPMS
bookkeeping ran afoul again...

In the meantime add an assertion that the plane is decoupled from the
framebuffer prior to release.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-01-17 11:07:06 +01:00
..
exynos drm: add support for private planes 2012-01-05 10:00:16 +00:00
gma500 gma500: silence gcc warnings in mid_get_vbt_data() 2012-01-10 10:01:22 +00:00
i2c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
i810 drm/i810: don't acces hw regs in lastclose 2011-12-22 19:54:58 +01:00
i915 drm/i915: Check that plane/pipe is disabled before removing the fb 2012-01-17 11:07:06 +01:00
mga drm: Make the per-driver file_operations struct const 2011-11-11 11:14:47 +00:00
nouveau drm/nouveau/pm: fix build with HWMON off 2012-01-10 10:13:16 +00:00
r128 drm: Make the per-driver file_operations struct const 2011-11-11 11:14:47 +00:00
radeon drm/radeon: double lock typo in radeon_vm_bo_rmv() 2012-01-09 12:49:48 +00:00
savage drm: Make the per-driver file_operations struct const 2011-11-11 11:14:47 +00:00
sis drm/sis|via: don't return stack garbage from free_mem ioctl 2012-01-09 12:11:39 +00:00
tdfx drm: Make the per-driver file_operations struct const 2011-11-11 11:14:47 +00:00
ttm drm/ttm: fix condition (and vs or) 2012-01-10 10:00:42 +00:00
via drm/sis|via: don't return stack garbage from free_mem ioctl 2012-01-09 12:11:39 +00:00
vmwgfx Merge remote-tracking branch 'pfdo/drm-fixes' into drm-core-next 2011-12-21 09:50:56 +00:00
ati_pcigart.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_agpsupport.c
drm_auth.c
drm_buffer.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_bufs.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_cache.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_context.c drm: make DRM_UNLOCKED ioctls with their own mutex 2012-01-05 14:43:02 +00:00
drm_crtc.c drm: add support for private planes 2012-01-05 10:00:16 +00:00
drm_crtc_helper.c drm: Add drm_format_num_planes() utility function 2011-12-20 20:34:32 +00:00
drm_debugfs.c drm: serialize access to list of debugfs files 2011-11-11 11:05:19 +00:00
drm_dma.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_dp_i2c_helper.c
drm_drv.c drm: make DRM_UNLOCKED ioctls with their own mutex 2012-01-05 14:43:02 +00:00
drm_edid.c Fix wrong assumptions in cea_for_each_detailed_block v2 2011-12-20 09:51:10 +00:00
drm_edid_modes.h drm/edid: support CEA video modes. 2011-12-19 14:53:16 +00:00
drm_encoder_slave.c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
drm_fb_helper.c drm: avoid switching to text console if there is no panic timeout 2011-11-10 21:27:34 +00:00
drm_fops.c drm: Make the per-driver file_operations struct const 2011-11-11 11:14:47 +00:00
drm_gem.c drm/gem: add functions for mmap offset creation 2011-08-30 11:06:06 +01:00
drm_global.c
drm_hashtab.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_info.c
drm_ioc32.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_ioctl.c drm: make DRM_UNLOCKED ioctls with their own mutex 2012-01-05 14:43:02 +00:00
drm_irq.c drm: Remove utterly bogus preempt_disable() sections 2011-11-14 09:28:50 +00:00
drm_lock.c drm: add missing exports for i810 driver. 2011-12-22 19:09:01 +00:00
drm_memory.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_mm.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_modes.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_pci.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_platform.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_proc.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_scatter.c drivers: use kzalloc/kcalloc instead of 'kmalloc+memset', where possible 2011-07-25 20:57:13 -07:00
drm_stub.c
drm_sysfs.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_trace.h
drm_trace_points.c
drm_usb.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_vm.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
Kconfig Merge tag 'v3.2-rc6' of /home/airlied/devel/kernel/linux-2.6 into drm-core-next 2011-12-20 14:43:53 +00:00
Makefile drm: kill drm_sman 2011-12-22 00:33:23 +01:00
README.drm

README.drm 

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html