linux

History

Eric Anholt ed4cb4142b i915: Add support for MSI and interrupt mitigation. Previous attempts at interrupt mitigation had been foiled by i915_wait_irq's failure to update the sarea seqno value when the status page indicated that the seqno had already been passed. MSI support has been seen to cut CPU costs by up to 40% in some workloads by avoiding other expensive interrupt handlers for frequent graphics interrupts. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>		2008-10-18 07:10:10 +10:00
..
i810
i830
i915	i915: Add support for MSI and interrupt mitigation.	2008-10-18 07:10:10 +10:00
mga
r128
radeon	drm/radeon: downgrade debug message from info to debug.	2008-09-01 08:51:52 +10:00
savage
sis	SiS DRM: fix a pointer cast warning	2008-10-18 07:10:10 +10:00
tdfx
via
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_bufs.c
drm_context.c
drm_dma.c
drm_drawable.c
drm_drv.c	drm: make drm_minors_cleanup() static	2008-07-26 12:00:11 -07:00
drm_fops.c
drm_hashtab.c
drm_ioc32.c
drm_ioctl.c
drm_irq.c	i915: Add support for MSI and interrupt mitigation.	2008-10-18 07:10:10 +10:00
drm_lock.c	drm: don't set the signal blocker on the master process.	2008-08-25 06:35:33 +10:00
drm_memory.c
drm_mm.c
drm_pci.c
drm_proc.c
drm_scatter.c
drm_sman.c
drm_stub.c
drm_sysfs.c
drm_vm.c
Kconfig
Makefile
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