0735f62e11
Previously, if there was no firmware available, the DRM would just disable channel creation from userspace, but still use a single channel for its own purposes. With a bit of care it should actually be possible to do this, due to the DRM's very limited use of the engine. It currently doesn't work correctly however, resulting in corrupted fbcon and hangs on a number of cards. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> |
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.. | ||
i2c | ||
i810 | ||
i830 | ||
i915 | ||
mga | ||
nouveau | ||
r128 | ||
radeon | ||
savage | ||
sis | ||
tdfx | ||
ttm | ||
via | ||
ati_pcigart.c | ||
drm_agpsupport.c | ||
drm_auth.c | ||
drm_bufs.c | ||
drm_cache.c | ||
drm_context.c | ||
drm_crtc_helper.c | ||
drm_crtc.c | ||
drm_debugfs.c | ||
drm_dma.c | ||
drm_dp_i2c_helper.c | ||
drm_drawable.c | ||
drm_drv.c | ||
drm_edid.c | ||
drm_encoder_slave.c | ||
drm_fb_helper.c | ||
drm_fops.c | ||
drm_gem.c | ||
drm_hashtab.c | ||
drm_info.c | ||
drm_ioc32.c | ||
drm_ioctl.c | ||
drm_irq.c | ||
drm_lock.c | ||
drm_memory.c | ||
drm_mm.c | ||
drm_modes.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 |
************************************************************ * 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