TononixOS/ubports_kernel_google_msm
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ae662d31264979e52581bd2573bf0b82812f52ab
ubports_kernel_google_msm/drivers/gpu/drm
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Eric Anholt ae662d3126 drm/i915: Add support for resetting the SO write pointers on gen7. 
These registers are automatically incremented by the hardware during
transform feedback to track where the next streamed vertex output
should go.  Unlike the previous generation, which had a packet for
setting the corresponding registers to a defined value, gen7 only has
MI_LOAD_REGISTER_IMM to do so.  That's a secure packet (since it loads
an arbitrary register), so we need to do it from the kernel, and it
needs to be settable atomically with the batchbuffer execution so that
two clients doing transform feedback don't stomp on each others'
state.

Instead of building a more complicated interface involcing setting the
registers to a specific value, just set them to 0 when asked and
userland can tweak its pointers accordingly.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 09:31:18 -08:00
..
exynos
drm/exynos: added hdmi display support
2011-12-29 11:21:42 +09:00
gma500
gma500: remove no_fb bits
2012-01-03 09:30:29 +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: Add support for resetting the SO write pointers on gen7.
2012-01-03 09:31:18 -08:00
mga
drm: Make the per-driver file_operations struct const
2011-11-11 11:14:47 +00:00
nouveau
drm/nouveau/ttm: fix crash as a result of a recent ttm change
2011-12-22 15:23:25 +10:00
r128
drm: Make the per-driver file_operations struct const
2011-11-11 11:14:47 +00:00
radeon
Merge branch 'drm-radeon-testing' of ../drm-radeon-next into drm-core-next
2012-01-03 09:45:12 +00:00
savage
drm: Make the per-driver file_operations struct const
2011-11-11 11:14:47 +00:00
sis
drm/sis: use drm_mm instead of drm_sman
2011-12-22 00:33:23 +01:00
tdfx
drm: Make the per-driver file_operations struct const
2011-11-11 11:14:47 +00:00
ttm
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
via
drm/via: use drm_mm instead of drm_sman
2011-12-22 00:33:22 +01:00
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_crtc_helper.c
drm: Add drm_format_num_planes() utility function
2011-12-20 20:34:32 +00:00
drm_crtc.c
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
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
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
drm_edid_modes.h
drm/edid: support CEA video modes.
2011-12-19 14:53:16 +00:00
drm_edid.c
Fix wrong assumptions in cea_for_each_detailed_block v2
2011-12-20 09:51:10 +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_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_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
…
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_points.c
…
drm_trace.h
…
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