This is only used for kgdb (and previously panic) handlers in
the fbdev emulation, so belongs there.
Note that this means we'll leave behind a forward declaration, but
once all the helper vtables are consolidated (in the next patch) that
will make more sense.
v2: fixup radone/amdgpu.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449218769-16577-3-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Thierry Reding <treding@nvidia.com> (v2)
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Back merge tag 'v4.4-rc4' into drm-next
We've picked up a few conflicts and it would be nice
to resolve them before we move onwards.
commit 4dfd6486 "drm: Use vblank timestamps to guesstimate how many
vblanks were missed" introduced in Linux 4.4-rc1 makes the drm core
more fragile to drivers which don't update hw vblank counters and
vblank timestamps in sync with firing of the vblank irq and
essentially at leading edge of vblank.
This exposed a problem with radeon-kms/amdgpu-kms which do not
satisfy above requirements:
The vblank irq fires a few scanlines before start of vblank, but
programmed pageflips complete at start of vblank and
vblank timestamps update at start of vblank, whereas the
hw vblank counter increments only later, at start of vsync.
This leads to problems like off by one errors for vblank counter
updates, vblank counters apparently going backwards or vblank
timestamps apparently having time going backwards. The net result
is stuttering of graphics in games, or little hangs, as well as
total failure of timing sensitive applications.
See bug #93147 for an example of the regression on Linux 4.4-rc:
https://bugs.freedesktop.org/show_bug.cgi?id=93147
This patch tries to align all above events better from the
viewpoint of the drm core / of external callers to fix the problem:
1. The apparent start of vblank is shifted a few scanlines earlier,
so the vblank irq now always happens after start of this extended
vblank interval and thereby drm_update_vblank_count() always samples
the updated vblank count and timestamp of the new vblank interval.
To achieve this, the reporting of scanout positions by
radeon_get_crtc_scanoutpos() now operates as if the vblank starts
radeon_crtc->lb_vblank_lead_lines before the real start of the hw
vblank interval. This means that the vblank timestamps which are based
on these scanout positions will now update at this earlier start of
vblank.
2. The driver->get_vblank_counter() function will bump the returned
vblank count as read from the hw by +1 if the query happens after
the shifted earlier start of the vblank, but before the real hw increment
at start of vsync, so the counter appears to increment at start of vblank
in sync with the timestamp update.
3. Calls from vblank irq-context and regular non-irq calls are now
treated identical, always simulating the shifted vblank start, to
avoid inconsistent results for queries happening from vblank irq vs.
happening from drm_vblank_enable() or vblank_disable_fn().
4. The radeon_flip_work_func will delay mmio programming a pageflip until
the start of the real vblank iff it happens to execute inside the shifted
earlier start of the vblank, so pageflips now also appear to execute at
start of the shifted vblank, in sync with vblank counter and timestamp
updates. This to avoid some races between updates of vblank count and
timestamps that are used for swap scheduling and pageflip execution which
could cause pageflips to execute before the scheduled target vblank.
The lb_vblank_lead_lines "fudge" value is calculated as the size of
the display controllers line buffer in scanlines for the given video
mode: Vblank irq's are triggered by the line buffer logic when the line
buffer refill for a video frame ends, ie. when the line buffer source read
position enters the hw vblank. This means that a vblank irq could fire at
most as many scanlines before the current reported scanout position of the
crtc timing generator as the number of scanlines the line buffer can
maximally hold for a given video mode.
This patch has been successfully tested on a RV730 card with DCE-3 display
engine and on a evergreen card with DCE-4 display engine, in single-display
and dual-display configuration, with different video modes.
A similar patch is needed for amdgpu-kms to fix the same problem.
Limitations:
- Line buffer sizes in pixels are hard-coded on < DCE-4 to a value
i just guessed to be high enough to work ok, lacking info on the true
sizes atm.
Fixes: fdo#93147
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Michel Dänzer <michel.daenzer@amd.com>
Cc: Harry Wentland <Harry.Wentland@amd.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
(v1) Tested-by: Dave Witbrodt <dawitbro@sbcglobal.net>
(v2) Refine radeon_flip_work_func() for better efficiency:
In radeon_flip_work_func, replace the busy waiting udelay(5)
with event lock held by a more performance and energy efficient
usleep_range() until at least predicted true start of hw vblank,
with some slack for scheduler happiness. Release the event lock
during waits to not delay other outputs in doing their stuff, as
the waiting can last up to 200 usecs in some cases.
Retested on DCE-3 and DCE-4 to verify it still works nicely.
(v2) Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
HPD signals on DVI ports can be fired off before the pins required for
DDC probing actually make contact, due to the pins for HPD making
contact first. This results in a HPD signal being asserted but DDC
probing failing, resulting in hotplugging occasionally failing.
This is somewhat rare on most cards (depending on what angle you plug
the DVI connector in), but on some cards it happens constantly. The
Radeon R5 on the machine used for testing this patch for instance, runs
into this issue just about every time I try to hotplug a DVI monitor and
as a result hotplugging almost never works.
Rescheduling the hotplug work for a second when we run into an HPD
signal with a failing DDC probe usually gives enough time for the rest
of the connector's pins to make contact, and fixes this issue.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Lyude <cpaul@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Here's the first drm-misc pull, with really mostly misc stuff all over.
Somewhat invasive is only Ville's change to mark the arg struct for
fb_create const - that might conflict with a new driver pull. So better to
get in fast.
* tag 'topic/drm-misc-2015-11-26' of git://anongit.freedesktop.org/drm-intel:
drm/mm: use list_next_entry
drm/i915: fix potential dangling else problems in for_each_ macros
drm: fix potential dangling else problems in for_each_ macros
drm/sysfs: Send out uevent when connector->force changes
drm/atomic: Small documentation fix.
drm/mm: rewrite drm_mm_for_each_hole
drm/sysfs: Grab lock for edid/modes_show
drm: Print the src/dst/clip rectangles in error in drm_plane_helper
drm: Add "prefix" parameter to drm_rect_debug_print()
drm: Keep coordinates in the typical x, y, w, h order instead of x, y, h, w
drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create()
drm: modes: replace simple_strtoul by kstrtouint
drm: Describe the Rotation property bits.
drm: Remove unused fbdev_list members
GPU-DRM: Delete unnecessary checks before drm_property_unreference_blob()
drm/dp: add eDP DPCD backlight control bit definitions
drm/tegra: Remove local fbdev emulation Kconfig option
drm/imx: Remove local fbdev emulation Kconfig option
drm/gem: Update/Polish docs
drm: Update GEM refcounting docs
"Could not force DPM to low", etc. is usually harmless and
just confuses users.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Drivers shouldn't clobber the passed in addfb ioctl parameters.
i915 was doing just that. To prevent it from happening again,
pass the struct around as const, starting all the way from
internal_framebuffer_create().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
I noticed that intel_fbdev->our_mode is unused. Introduced by
79e539453b ("DRM: i915: add mode setting support").
Then I noticed that intel_fbdev->fbdev_list is unused as well.
Introduced by 386516744b ("drm/fb: fix fbdev object model +
cleanup properly.") in i915, nouveau and radeon.
Subsequently cargo culted to amdgpu, ast, cirrus, qxl, udl,
virtio and mgag200.
Already removed from the latter with cc59487a05 ("drm/mgag200:
'fbdev_list' in 'struct mga_fbdev' is not used").
Remove it from the others.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
No use bothering users about this for whom we disable write-combining for
other reasons anyway.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Write-combining is a CPU feature. From the GPU POV, these both simply
mean no GPU<->CPU cache coherency.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
They reportedly cause random GPU hangs.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91268
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Pull drm updates from Dave Airlie:
"I Was Almost Tempted To Capitalise Every Word, but then I decided I
couldn't read it myself!
I've also got one pull request for the sti driver outstanding. It
relied on a commit in Greg's tree and I didn't find out in time, that
commit is in your tree now so I might send that along once this is
merged.
I also had the accidental misfortune to have access to a Skylake on my
desk for a few days, and I've had to encourage Intel to try harder,
which seems to be happening now.
Here is the main drm-next pull request for 4.4.
Highlights:
New driver:
vc4 driver for the Rasberry Pi VPU.
(From Eric Anholt at Broadcom.)
Core:
Atomic fbdev support
Atomic helpers for runtime pm
dp/aux i2c STATUS_UPDATE handling
struct_mutex usage cleanups.
Generic of probing support.
Documentation:
Kerneldoc for VGA switcheroo code.
Rename to gpu instead of drm to reflect scope.
i915:
Skylake GuC firmware fixes
HPD A support
VBT backlight fallbacks
Fastboot by default for some systems
FBC work
BXT/SKL workarounds
Skylake deeper sleep state fixes
amdgpu:
Enable GPU scheduler by default
New atombios opcodes
GPUVM debugging options
Stoney support.
Fencing cleanups.
radeon:
More efficient CS checking
nouveau:
gk20a instance memory handling improvements.
Improved PGOB detection and GK107 support
Kepler GDDR5 PLL statbility improvement
G8x/GT2xx reclock improvements
new userspace API compatiblity fixes.
virtio-gpu:
Add 3D support - qemu 2.5 has it merged for it's gtk backend.
msm:
Initial msm88896 (snapdragon 8200)
exynos:
HDMI cleanups
Enable mixer driver byt default
Add DECON-TV support
vmwgfx:
Move to using memremap + fixes.
rcar-du:
Add support for R8A7793/4 DU
armada:
Remove support for non-component mode
Improved plane handling
Power savings while in DPMS off.
tda998x:
Remove unused slave encoder support
Use more HDMI helpers
Fix EDID read handling
dwhdmi:
Interlace video mode support for ipu-v3/dw_hdmi
Hotplug state fixes
Audio driver integration
imx:
More color formats support.
tegra:
Minor fixes/improvements"
[ Merge fixup: remove unused variable 'dev' that had all uses removed in
commit 4e270f088011: "drm/gem: Drop struct_mutex requirement from
drm_gem_mmap_obj" ]
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (764 commits)
drm/vmwgfx: Relax irq locking somewhat
drm/vmwgfx: Properly flush cursor updates and page-flips
drm/i915/skl: disable display side power well support for now
drm/i915: Extend DSL readout fix to BDW and SKL.
drm/i915: Do graphics device reset under forcewake
drm/i915: Skip fence installation for objects with rotated views (v4)
vga_switcheroo: Drop client power state VGA_SWITCHEROO_INIT
drm/amdgpu: group together common fence implementation
drm/amdgpu: remove AMDGPU_FENCE_OWNER_MOVE
drm/amdgpu: remove now unused fence functions
drm/amdgpu: fix fence fallback check
drm/amdgpu: fix stoping the scheduler timeout
drm/amdgpu: cleanup on error in amdgpu_cs_ioctl()
drm/i915: Fix locking around GuC firmware load
drm/amdgpu: update Fiji's Golden setting
drm/amdgpu: update Fiji's rev id
drm/amdgpu: extract common code in vi_common_early_init
drm/amd/scheduler: don't oops on failure to load
drm/amdgpu: don't oops on failure to load (v2)
drm/amdgpu: don't VT switch on suspend
...
- Updated register headers for GFX 8.1 for Stoney
- Add some new CZ revisions
- minor pageflip optimizations
- Fencing clean up
- Warning fix
- More fence cleanup
- oops fix
- Fiji fixes
* 'drm-next-4.4' of git://people.freedesktop.org/~agd5f/linux: (29 commits)
drm/amdgpu: group together common fence implementation
drm/amdgpu: remove AMDGPU_FENCE_OWNER_MOVE
drm/amdgpu: remove now unused fence functions
drm/amdgpu: fix fence fallback check
drm/amdgpu: fix stoping the scheduler timeout
drm/amdgpu: cleanup on error in amdgpu_cs_ioctl()
drm/amdgpu: update Fiji's Golden setting
drm/amdgpu: update Fiji's rev id
drm/amdgpu: extract common code in vi_common_early_init
drm/amd/scheduler: don't oops on failure to load
drm/amdgpu: don't oops on failure to load (v2)
drm/amdgpu: don't VT switch on suspend
drm/amdgpu: Make amdgpu_mn functions inline
drm/amdgpu: remove amdgpu_fence_ref/unref
drm/amdgpu: use common fence for sync
drm/amdgpu: use the new fence_is_later
drm/amdgpu: use common fences for VMID management v2
drm/amdgpu: move ring_from_fence to common code
drm/amdgpu: switch to common fence_wait_any_timeout v2
drm/amdgpu: remove unneeded fence functions
...
Few more drm-misc stragglers for 4.4. Big thing is the generic probe for
imx/rockchip/armada (but the variant for msm/rpi/exynos is still missing).
Also the hdmi clocking fixes from Ville which was a lot of confusion about
which tree it should be applied to ;-)
* tag 'topic/drm-misc-2015-10-22' of git://anongit.freedesktop.org/drm-intel:
drm: correctly check failed allocation
vga_switcheroo: Constify vga_switcheroo_handler
drm/armada: Convert the probe function to the generic drm_of_component_probe()
drm/rockchip: Convert the probe function to the generic drm_of_component_probe()
drm/imx: Convert the probe function to the generic drm_of_component_probe()
drm: Introduce generic probe function for component based masters.
drm/edid: Round to closest when computing the CEA/HDMI alternate clock
drm/edid: Fix up clock for CEA/HDMI modes specified via detailed timings
More amdgpu and radeon stuff for drm-next. Stoney support is the big change.
The rest is just bug fixes and code cleanups. The Stoney stuff is pretty
low impact with respect to existing chips.
* 'drm-next-4.4' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: change VM size default to 64GB
drm/amdgpu: add Stoney pci ids
drm/amdgpu: update the core VI support for Stoney
drm/amdgpu: add VCE support for Stoney (v2)
drm/amdgpu: add UVD support for Stoney
drm/amdgpu: add GFX support for Stoney (v2)
drm/amdgpu: add SDMA support for Stoney (v2)
drm/amdgpu: add DCE support for Stoney
drm/amdgpu: Update SMC/DPM for Stoney
drm/amdgpu: add GMC support for Stoney
drm/amdgpu: add Stoney chip family
drm/amdgpu: fix the broken vm->mutex V2
drm/amdgpu: remove the unnecessary parameter adev for amdgpu_fence_wait_any()
drm/amdgpu: remove the exclusive lock
drm/amdgpu: remove old lockup detection infrastructure
drm: fix trivial typos
drm/amdgpu/dce: simplify suspend/resume
drm/amdgpu/gfx8: set TC_WB_ACTION_EN in RELEASE_MEM packet
drm/radeon: Use rdev->gem.mutex to protect hyperz/cmask owners
If driver backlight control is disabled, either by driver
parameter or default per-asic setting, revert to the old behavior.
Fixes a regression in commit:
4281f46ef8
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
So that the bl encoder will be null if the GPU does not
control the backlight.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Taking the grph update lock is only necessary when
updating the the secondary address (for single pipe stereo).
v2: fix comment as per Michel's suggestion
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Just a crash fix for radeon and amdgpu if the user has forcibly disabled
dpm and tries to access the pwm sysfs controls.
* 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: add missing dpm check for KV dpm late init
drm/amdgpu/dpm: don't add pwm attributes if DPM is disabled
drm/radeon/dpm: don't add pwm attributes if DPM is disabled
More drm-misc for 4.4.
- fb refcount fix in atomic fbdev
- various locking reworks to reduce drm_global_mutex and dev->struct_mutex
- rename docbook to gpu.tmpl and include vga_switcheroo stuff, plus more
vga_switcheroo (Lukas Wunner)
- viewport check fixes for atomic drivers from Ville
- DRM_DEBUG_VBL from Ville
- non-contentious header fixes from Mikko Rapeli
- small things all over
* tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel: (31 commits)
drm/fb-helper: Fix fb refcounting in pan_display_atomic
drm/fb-helper: Set plane rotation directly
drm: fix mutex leak in drm_dp_get_mst_branch_device
drm: Check plane src coordinates correctly during page flip for atomic drivers
drm: Check crtc viewport correctly with rotated primary plane on atomic drivers
drm: Refactor plane src coordinate checks
drm: Swap w/h when converting the mode to src coordidates for a rotated primary plane
drm: Don't leak fb when plane crtc coodinates are bad
ALSA: hda - Spell vga_switcheroo consistently
drm/gem: Use kref_get_unless_zero for the weak mmap references
drm/vgem: Drop vgem_drm_gem_mmap
drm: Fix return value of drm_framebuffer_init()
drm/gem: Use container_of in drm_gem_object_free
drm/gem: Check locking in drm_gem_object_unreference
drm/gem: Drop struct_mutex requirement from drm_gem_mmap_obj
drm/i810_drm.h: include drm/drm.h
r128_drm.h: include drm/drm.h
savage_drm.h: include <drm/drm.h>
gpu/doc: Convert to markdown harder
gpu/doc: Add vga_switcheroo documentation
...
Just one special case (since i915 lost its ums code, yay):
- radeon: Has slots for the old ums ioctls which don't have
DRM_UNLOCKED, but all filled with drm_invalid_op. So ok to drop it
everywhere.
Every other kms driver just has DRM_UNLOCKED for all their ioctls, as
they should.
v2: admgpu happened, include that one too. And i915 lost its UMS
support which means we can change all the i915 ioctls too.
v3: Rebased on top of new vmwgfx DX interface extensions.
v4: Rebase on top of render-node support in exynos.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Another round of drm-misc. Unfortunately the DRM_UNLOCKED removal for
DRIVER_MODESET isn't complete yet for lack of review on 1-2 patches.
Otherwise just various stuff all over.
* tag 'topic/drm-misc-2015-10-08' of git://anongit.freedesktop.org/drm-intel:
drm: Stop using drm_vblank_count() as the hw frame counter
drm/irq: Use unsigned int pipe in public API
drm: Use DRM_ROTATE_MASK and DRM_REFLECT_MASK
drm: Add DRM_ROTATE_MASK and DRM_REFLECT_MASK
vga_switcheroo: Add missing locking
vgaarb: use kzalloc in vga_arbiter_add_pci_device()
drm: Don't zero vblank timestamps from the irq handler
drm: Hack around CONFIG_AGP=m build failures
drm/i915: Remove setparam ioctl
drm: Remove dummy agp ioctl wrappers
drm/vmwgfx: Stop checking for DRM_UNLOCKED
drm/drm_ioctl.c: kerneldoc
drm: Define a drm_invalid_op ioctl implementation
drm: Remove __OS_HAS_AGP
drm/doc: Update docs about device instance setup
This removes the last depency of radeon for dev->struct_mutex!
Also the locking scheme for hyperz/cmask owners seems a bit unsound,
there's no protection in the preclose handler (and that never did hold
dev->struct_mutex while being called). So grab the same lock there,
too.
There's also all the checks in the cs checker, but since the overall
design seems to never stall for the previous owner I figured it's ok
if I leave this racy. It was racy even before I touched it after all
too.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This was added to three files even though they don't use any
vga_switcheroo symbols:
Added to radeon_acpi.c by commit d7a2952f1a ("drm/radeon: Add
support for the ATIF ACPI method to the radeon driver").
Added to radeon_asic.c by commit 0a10c85129 ("drm/radeon: create
radeon_asic.c").
Added to radeon_bios.c by commit 6a9ee8af34 ("vga_switcheroo:
initial implementation (v15)").
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This continues the pattern started in commit cc1ef118fc ("drm/irq:
Make pipe unsigned and name consistent"). This is applied to the public
APIs and driver callbacks, so pretty much all drivers need to be updated
to match the new prototypes.
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Jianwei Wang <jianwei.wang.chn@gmail.com>
Cc: Alison Wang <alison.wang@freescale.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
restore the fbdev state if a drm app like X is killed.
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
They were added relatively early in the driver init process
which meant that in some cases the driver was not finished
initializing before external tools tried to use them which
could result in a crash depending on the timing.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
There doesn't seem to be any need to have 'ib' volatile, the code is
not even consistent with it and some places already miss it. As it is
now it's just making gcc produce worse code. If there are special
requirements for that memory, then proper primitives like memory
barriers or accessor functions should be used, but it doesn't look
like that is needed here.
While at it, change the type to match the one in radeon_ib structure.
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
After this patch the register check loop does the same thing as before,
except that now gcc does better job optimizing it: it now sees that
end_reg was already checked against PACKET3_SET_CONTEXT_REG_END and can
optimize REG_SAFE_BM_SIZE comparison out of evergreen_is_safe_reg()
as (PACKET3_SET_CONTEXT_REG_END >> 7) < REG_SAFE_BM_SIZE.
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
evergreen_cs_check_reg() is a large function and gcc doesn't want to
inline it. It has a quick check for reg_safe_bm[] to see if register
needs special handling, which often results in early exit. However
because the function is large, it has a long prologue/epilogue to
save/restore all the callee-save registers which according to perf is
taking significant amount of time. To avoid this, we can reuse
evergreen_is_safe_reg() to do the early check directly in register loop.
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
To avoid having to distinguish between CAYMAN or older on every register
check, place a pointer in evergreen_cs_track and use it unconditionally.
Also make use of the fact that both reg_safe_bm[] arrays are of the same
length to remove another CAYMAN check.
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Currently everyone and their dog has their own favourite spelling
for vga_switcheroo. This makes it hard to grep dmesg for log entries
relating to vga_switcheroo. It also makes it hard to find related
source files in the tree.
vga_switcheroo.c uses pr_fmt "vga_switcheroo". Use that everywhere.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
In order to cache the EDID properly for tiled displays, we
need to retrieve it before we register the connector with
userspace, otherwise userspace can call get resources
and try and get the edid before we've even cached it.
This fixes some problems when hotplugging mst monitors,
with X/mutter running. As mutter seems to get 0 modes
for one of the monitors in the tile.
v2: fix warning in radeon
handle tile setting in cached path rather than
get edid path.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
It was just a wrapper around drm_fb_helper_set_par that
called cursor_set2 in addition. Now that the core handles
this, drop this radeon specific version.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
And use it in radeon to replace all the ioctls no longer valid in kms
mode. I plan to also use this later on when nuking the ums support for
i915.
Note that setting the function pointer in the ioctl table to NULL
would amount to the same, but that results in some debug output from
the drm_ioctl() function. I've figured it's cleaner to have a
special-purpose function.
Cc: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We already express the drm/agp depencies correctly in Kconfig, so we
can rip this remnant from the shared drm core days.
Aside: Pretty much all the #ifdefs in radeon/nouveau could be killed
if ttm would provide dummy functions. I'm not going to volunteer for
that though.
v2: Use IS_ENABLED(CONFIG_AGP) as suggested by Ville
v3: Polish from Ville's review.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com> (v2)
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Another attempt at drm-misc for 4.4 ...
- better atomic helpers for runtime pm drivers
- atomic fbdev
- dp aux i2c STATUS_UPDATE handling (for short i2c replies from the sink)
- bunch of constify patches
- inital kerneldoc for vga switcheroo
- some vblank code cleanups from Ville and Thierry
- various polish all over
* tag 'topic/drm-misc-2015-09-25' of git://anongit.freedesktop.org/drm-intel: (57 commits)
drm/irq: Add drm_crtc_vblank_count_and_time()
drm/irq: Rename drm_crtc -> crtc
drm: drm_atomic_crtc_get_property should be static
drm/gma500: Remove DP_LINK_STATUS_SIZE redefinition
vga_switcheroo: Set active attribute to false for audio clients
drm/core: Preserve the fb id on close.
drm/core: Preserve the framebuffer after removing it.
drm: Use vblank timestamps to guesstimate how many vblanks were missed
drm: store_vblank() is never called with NULL timestamp
drm: Clean up drm_calc_vbltimestamp_from_scanoutpos() vbl_status
drm: Limit the number of .get_vblank_counter() retries
drm: Pass flags to drm_update_vblank_count()
drm/i915: Fix vblank count variable types
drm: Kill pixeldur_ns
drm: Stop using linedur_ns and pixeldur_ns for vblank timestamps
drm: Move timestamping constants into drm_vblank_crtc
drm/fbdev: Update legacy plane->fb refcounting for atomic restore
drm: fix kernel-doc warnings in drm_crtc.h
vga_switcheroo: Sort headers alphabetically
drm: Spell vga_switcheroo consistently
...
Instead of only enabling the backlight (which seems to set it to max
brightness), just re-set the current backlight level, which also takes
care of enabling the backlight if necessary.
Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop,
the radeon_atom_encoder_dpms_avivo part is only compile tested.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
linedur_ns, and especially pixeldur_ns are becoming rather inaccurate
to be used for the vblank timestamp correction. With 4k@60 the pixel
duration is already below 2ns, so the amount of error due to the
truncation to nanoseconds is introducing quite a bit of error.
We can avoid such problems if we instead calculate the timestamp
delta_ns directly from the dislay timings, avoiding the use of
these intermediate truncated values.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Squash in fixup from Thierry Reding for amdgpu.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter