Russell Currey 71f677a910 drm/ast: Handle configuration without P2A bridge ... The ast driver configures a window to enable access into BMC memory space in order to read some configuration registers. If this window is disabled, which it can be from the BMC side, the ast driver can't function. Closing this window is a necessity for security if a machine's host side and BMC side are controlled by different parties; i.e. a cloud provider offering machines "bare metal". A recent patch went in to try to check if that window is open but it does so by trying to access the registers in question and testing if the result is 0xffffffff. This method will trigger a PCIe error when the window is closed which on some systems will be fatal (it will trigger an EEH for example on POWER which will take out the device). This patch improves this in two ways: - First, if the firmware has put properties in the device-tree containing the relevant configuration information, we use these. - Otherwise, a bit in one of the SCU scratch registers (which are readable via the VGA register space and writeable by the BMC) will indicate if the BMC has closed the window. This bit has been defined by Y.C Chen from Aspeed. If the window is closed and the configuration isn't available from the device-tree, some sane defaults are used. Those defaults are hopefully sufficient for standard video modes used on a server. Signed-off-by: Russell Currey <ruscur@russell.cc> Acked-by: Joel Stanley <joel@jms.id.au> Cc: <stable@vger.kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@redhat.com>		2017-02-28 13:09:50 +10:00
..
amd	Merge branch 'drm-next-4.11' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-02-24 08:35:23 +10:00
arc	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
arm	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
armada	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
ast	drm/ast: Handle configuration without P2A bridge	2017-02-28 13:09:50 +10:00
atmel-hlcdc	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
bochs	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
bridge	drm/bridge/sii8620: enable interlace modes	2017-02-02 15:15:31 +05:30
cirrus	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
etnaviv	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
exynos	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
fsl-dcu	drm/fsl-dcu: check for clk_prepare_enable() error	2017-02-07 20:28:04 -08:00
gma500	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
hisilicon	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
i2c	drm/i2c: tda998x: fix spelling mistake	2016-11-18 00:00:40 +00:00
i810	drm/i810: drop device_is_agp callback	2017-01-26 10:44:43 +01:00
i915	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
imx	imx-drm: TVE regulator, fb size limit, and ipu-v3 module fixes	2017-02-23 12:10:42 +10:00
lib	drm: Add a simple generator of random permutations	2016-12-27 12:34:00 +01:00
mediatek	drm: mediatek: use crtc helper drm_crtc_from_index()	2017-01-18 09:21:06 -05:00
meson	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
mga	drm/mga: remove device_is_agp callback	2017-01-26 10:45:03 +01:00
mgag200	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
msm	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
mxsfb	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
nouveau	Less anger inducing pull request for 4.11	2017-02-23 18:58:18 -08:00
omapdrm	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
panel	drm/panel: simple: Specify bus width and flags for EDT displays	2017-01-26 10:57:18 +01:00
qxl	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
r128
radeon	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
rcar-du	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
rockchip	drm/rockchip: Use common IOMMU API to attach devices	2017-02-15 08:52:13 +08:00
savage	drm: Change the return type of the unload hook to void	2017-01-09 11:25:22 +01:00
selftests	drm: kselftest for drm_mm and bottom-up allocation	2017-02-03 11:36:49 +01:00
shmobile	drm: Change the return type of the unload hook to void	2017-01-09 11:25:22 +01:00
sis	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
sti	drm/sti: fix build warnings in sti_drv.c and sti_vtg.c files	2017-02-23 12:54:54 +10:00
sun4i	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
tdfx
tegra	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
tilcdc	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
tinydrm	Less anger inducing pull request for 4.11	2017-02-23 18:58:18 -08:00
ttm	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
udl	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
vc4	Linux 4.10-rc8	2017-02-23 12:10:12 +10:00
vgem	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
via	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
virtio	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
vmwgfx	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
zte	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
ati_pcigart.c
drm_agpsupport.c	drm/i810: drop device_is_agp callback	2017-01-26 10:44:43 +01:00
drm_atomic_helper.c	drm/atomic: fix an error code in mode_fixup()	2017-02-08 16:15:42 +01:00
drm_atomic.c	Linux 4.10-rc8	2017-02-23 12:10:12 +10:00
drm_auth.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_blend.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_bridge.c	drm/bridge: Use recommened kerneldoc for struct member refs	2017-01-02 09:17:26 +01:00
drm_bufs.c
drm_cache.c	drm: Update drm_cache.c to pull in the new drm_cache.h	2017-01-24 11:00:22 +01:00
drm_color_mgmt.c	drm/color: un-inline drm_color_lut_extract()	2017-01-31 15:31:58 +02:00
drm_connector.c	Linux 4.10-rc8	2017-02-23 12:10:12 +10:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c	drm/kms-helpers: Use recommened kerneldoc for struct member refs	2017-01-25 16:18:57 +01:00
drm_crtc_internal.h	Revert "drm: Resurrect atomic rmfb code, v3"	2017-02-17 12:39:04 +10:00
drm_crtc.c	drm: s/drm_crtc_get_hv_timings/drm_mode_get_hv_timings/	2017-01-26 10:46:28 +01:00
drm_debugfs_crc.c	drm: crc: Call wake_up_interruptible() each time there is a new CRC entry	2017-01-06 15:23:19 +01:00
drm_debugfs.c	drm/atomic: Remove drm_atomic_debugfs_cleanup()	2017-01-27 09:02:03 +01:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c	drm/kms-helpers: Use recommened kerneldoc for struct member refs	2017-01-25 16:18:57 +01:00
drm_dp_mst_topology.c	Less anger inducing pull request for 4.11	2017-02-23 18:58:18 -08:00
drm_drv.c	Linux 4.10-rc8	2017-02-23 12:10:12 +10:00
drm_dumb_buffers.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_edid_load.c
drm_edid.c	drm: Clean up the 1366x768 fixup codes	2017-02-01 19:01:47 +02:00
drm_encoder_slave.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_encoder.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_fb_cma_helper.c	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
drm_fb_helper.c	drm: Cancel drm_fb_helper_resume_work on unload	2017-02-08 16:15:42 +01:00
drm_flip_work.c
drm_fops.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_fourcc.c
drm_framebuffer.c	Revert "drm: Resurrect atomic rmfb code, v3"	2017-02-17 12:39:04 +10:00
drm_gem_cma_helper.c	Less anger inducing pull request for 4.11	2017-02-23 18:58:18 -08:00
drm_gem.c	drm/gem|prime|mm: Use recommened kerneldoc for struct member refs	2017-01-25 16:20:21 +01:00
drm_global.c	drm: Update TTM initialization documentation	2016-12-30 12:52:10 +01:00
drm_hashtab.c
drm_info.c	locking/atomic, kref: Add kref_read()	2017-01-14 11:37:18 +01:00
drm_internal.h	drm: remove device_is_agp callback	2017-01-26 10:45:14 +01:00
drm_ioc32.c
drm_ioctl.c	drm: Export drm_ioctl_permit to kernel-doc	2016-12-30 12:40:48 +01:00
drm_irq.c	drm: Nuke ums vgaarb support	2017-01-26 10:45:31 +01:00
drm_kms_helper_common.c
drm_legacy.h	drm: compile drm_vm.c only when needed	2017-01-06 11:03:07 +01:00
drm_lock.c	drm: Avoid NULL dereference for DRM_LEGACY debug message	2016-11-28 08:39:41 +01:00
drm_memory.c
drm_mipi_dsi.c
drm_mm.c	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
drm_mode_config.c	drm: Show leaked connectors upon unload	2017-01-23 09:26:22 +01:00
drm_mode_object.c	Less anger inducing pull request for 4.11	2017-02-23 18:58:18 -08:00
drm_modes.c	drm: Clean up the 1366x768 fixup codes	2017-02-01 19:01:47 +02:00
drm_modeset_helper.c	drm: Convert all helpers to drm_connector_list_iter	2016-12-18 14:33:22 +01:00
drm_modeset_lock.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_of.c	drm: Don't include <drm/drm_encoder.h> in <drm/drm_crtc.h>	2016-12-18 16:29:29 +05:30
drm_panel.c	drm/panel: Constify device node argument to of_drm_find_panel()	2017-01-04 08:30:37 +01:00
drm_pci.c	drm: remove device_is_agp callback	2017-01-26 10:45:14 +01:00
drm_plane_helper.c	drm/kms-helpers: Use recommened kerneldoc for struct member refs	2017-01-25 16:18:57 +01:00
drm_plane.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_platform.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_prime.c	drm/prime: Clarify DMA-BUF/GEM Object lifetime	2017-01-27 15:00:26 +01:00
drm_print.c	drm/printer: add debug printer	2016-12-30 11:43:40 +01:00
drm_probe_helper.c	Merge tag 'drm-misc-next-2017-01-30' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-02-01 08:31:09 +10:00
drm_property.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_rect.c	drm/rect: Fix formatting of example code	2016-12-30 13:35:54 +01:00
drm_scatter.c
drm_simple_kms_helper.c	drm/doc: use preferred struct reference in kernel-doc	2016-12-30 13:34:59 +01:00
drm_sysfs.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c	drm: remove unnecessary fault wrappers	2017-02-24 17:46:55 -08:00
drm_vma_manager.c	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
Kconfig	drm: Add DRM support for tiny LCD displays	2017-02-18 18:04:58 +01:00
Makefile	drm: Add DRM support for tiny LCD displays	2017-02-18 18:04:58 +01:00