linux_dsm_epyc7002/drivers/gpu/drm
Sergei Antonov 9a11843987 drm/nouveau/bios: fix a bit shift error introduced by 457e77b
Commit 457e77b264 added two checks applied to a
value received from nv_rd32(bios, 0x619f04). But after this new piece of code
is executed, the addr local variable does not hold the same value it used to
hold before the commit. Here is what is was assigned in the original code:
	(u64)(nv_rd32(bios, 0x619f04) & 0xffffff00) << 8
in the committed code it ends up with this value:
	(u64)(nv_rd32(bios, 0x619f04) >> 8) << 8
These expressions are obviously not equivalent.

My Nvidia video card does not show anything on the display when I boot a
kernel containing this commit.

The patch fixes the code so that the new checks are still done, but the
side effect of an incorrect addr value is gone.

Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-04-18 13:15:18 +10:00
..
armada DRM: armada: fix corruption while loading cursors 2014-04-08 10:51:03 +10:00
ast drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
bochs drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
bridge drm/bridge: export ptn3460_init function 2014-04-04 21:24:50 +09:00
cirrus drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
exynos Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
gma500 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
i2c drm/i2c: tda998x: always use the same device for all kernel messages 2014-02-14 20:11:12 +00:00
i810
i915 Merge tag 'drm-intel-fixes-2014-04-11' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-04-16 10:35:01 +10:00
mga drivers: gpu: Include appropriate header file in mga_ioc32.c 2014-01-14 12:59:24 +10:00
mgag200 drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
msm Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
nouveau drm/nouveau/bios: fix a bit shift error introduced by 457e77b 2014-04-18 13:15:18 +10:00
omapdrm drm/omap: fix the handling of fb ref counts 2014-04-15 16:40:01 +03:00
panel drm/panel: Changes for v3.15-rc1 2014-04-05 16:12:27 +10:00
qxl drm/ttm: Hide the implementation details of reservation 2014-04-04 08:00:59 +02:00
r128 drivers: gpu: Include appropriate header file in r128_ioc32.c 2014-01-14 13:05:37 +10:00
radeon drm/radeon/ci: make sure mc ucode is loaded before checking the size 2014-04-17 14:14:43 +02:00
rcar-du drm/rcar-du: Handle encoder initialization failures 2014-04-04 08:02:54 +10:00
savage
shmobile drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
sis drivers: gpu: Mark function as static in sis_drv.c 2014-01-14 13:04:33 +10:00
tdfx
tegra drm/tegra: Changes for v3.15-rc1 2014-04-05 16:13:08 +10:00
tilcdc drm: Replace crtc fb with primary plane fb (v3) 2014-04-01 20:18:28 -04:00
ttm Merge tag 'ttm-next-2014-04-04' of git://people.freedesktop.org/~thomash/linux into drm-next 2014-04-05 16:07:39 +10:00
udl Merge tag 'drm-intel-fixes-2014-04-04' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-04-05 16:14:21 +10:00
via drivers: gpu: Mark function as static in via_drv.c 2014-01-14 13:05:00 +10:00
vmwgfx drm/vmwgfx: correct fb_fix_screeninfo.line_length 2014-04-03 09:34:06 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c
drm_cache.c x86: Use clflushopt in drm_clflush_virt_range 2014-02-27 08:26:31 -08:00
drm_context.c
drm_crtc_helper.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
drm_crtc_internal.h drm: move drm_mode related functions into drm_modes.c 2014-03-13 12:48:40 +01:00
drm_crtc.c drm: Allow userspace to ask for universal plane list (v2) 2014-04-01 20:18:29 -04:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c drm/dp_helper: don't return EPROTO for defers (v2) 2014-04-05 16:06:34 +10:00
drm_drv.c drm: Add a function to get the ioctl flags 2014-03-28 14:19:02 +01:00
drm_edid_load.c
drm_edid.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c drm: Prefer noninterlace cmdline mode unless explicitly specified 2014-04-04 10:07:03 +10:00
drm_flip_work.c
drm_fops.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
drm_gem_cma_helper.c drm: gem-cma: Fix warnings due to improper printk formats 2014-04-04 10:13:48 +10:00
drm_gem.c Merge branch 'drm-docs' of ssh://people.freedesktop.org/~danvet/drm into drm-next 2014-03-18 19:09:10 +10:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_ioc32.c
drm_ioctl.c drm: Allow userspace to ask for universal plane list (v2) 2014-04-01 20:18:29 -04:00
drm_irq.c drm/radeon: Move the early vblank IRQ fixup to radeon_get_crtc_scanoutpos() 2014-01-20 12:21:35 +02:00
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/mipi_dsi: create dsi devices only for nodes with reg property 2014-04-04 21:24:47 +09:00
drm_mm.c drm/mm: Don't WARN if drm_mm_reserve_node 2014-04-10 10:54:47 +03:00
drm_modes.c drm: polish function kerneldoc for drm_modes.[hc] 2014-03-13 12:48:44 +01:00
drm_panel.c
drm_pci.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_plane_helper.c drm: Add drm_crtc_init_with_planes() (v2) 2014-04-01 20:18:27 -04:00
drm_platform.c drm: provide device-refcount 2014-03-16 12:25:17 +01:00
drm_prime.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
drm_rect.c
drm_scatter.c
drm_stub.c drm: Allow userspace to ask for universal plane list (v2) 2014-04-01 20:18:29 -04:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c drm: provide device-refcount 2014-03-16 12:25:17 +01:00
drm_vm.c
drm_vma_manager.c
Kconfig drm/bridge: Add PTN3460 bridge driver 2014-03-24 00:36:37 +09:00
Makefile drm: Add primary plane helpers (v3) 2014-04-01 20:11:28 -04:00
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