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554d6af50a
Our code makes a lot of assumptions regarding what each DDI port actually supports, and the VBT should tell us what is really happening in the hardware. So parse the information provided by the VBT and check if any of our assumptions is wrong. Our driver also has a history of not really trusting the VBT, so a WARN here could mean that: a) our coding assumptions are wrong b) the VBT is wrong c) we're incorrectly parsing the VBT d) the checks are wrong But I really hope we won't ever trigger any of those WARNs. v2: Don't check the redundant "Capabilities" field from byte 24 since it doesn't seem to be used. v3: Rebase v4: Replace WARN with DRM_DEBUG_KMS Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> (v2) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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ast | ||
cirrus | ||
exynos | ||
gma500 | ||
i2c | ||
i810 | ||
i915 | ||
mga | ||
mgag200 | ||
msm | ||
nouveau | ||
omapdrm | ||
qxl | ||
r128 | ||
radeon | ||
rcar-du | ||
savage | ||
shmobile | ||
sis | ||
tdfx | ||
tilcdc | ||
ttm | ||
udl | ||
via | ||
vmwgfx | ||
ati_pcigart.c | ||
drm_agpsupport.c | ||
drm_auth.c | ||
drm_buffer.c | ||
drm_bufs.c | ||
drm_cache.c | ||
drm_context.c | ||
drm_crtc.c | ||
drm_crtc_helper.c | ||
drm_debugfs.c | ||
drm_dma.c | ||
drm_dp_helper.c | ||
drm_drv.c | ||
drm_edid.c | ||
drm_edid_load.c | ||
drm_encoder_slave.c | ||
drm_fb_cma_helper.c | ||
drm_fb_helper.c | ||
drm_flip_work.c | ||
drm_fops.c | ||
drm_gem.c | ||
drm_gem_cma_helper.c | ||
drm_global.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_platform.c | ||
drm_prime.c | ||
drm_rect.c | ||
drm_scatter.c | ||
drm_stub.c | ||
drm_sysfs.c | ||
drm_trace.h | ||
drm_trace_points.c | ||
drm_usb.c | ||
drm_vm.c | ||
drm_vma_manager.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