This was based on a description by Ben Herrenschmidt:

> I've removed that SBA reset from the normal TLB invalidation path and
> left it only once after turning AGP on.

About six months ago, he said:

> I did it a bit differently, but yeah, you get the idea. I'm doing a
> patch series so don't bother pushing things too hard yet.

But I haven't seen anything from him about this since then, and people are
regularly hitting these lockups, so here we are...
Signed-off-by: NMichel Dänzer <daenzer@vmware.com>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NDave Airlie <airlied@gmail.com>

For DP/eDP, always use the standard DP SS indices.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@gmail.com>

If the ss clock is external, the CLK_REF bit needs to be set
in the SetPixelClock parameters.  This should fix DP failures
in the channel equalization loop.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@gmail.com>

It's more like LVDS then DP in some ways.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Don't try and en/disable the port as it may be a hpd event from
powering up/down the panel during a modeset or dpms.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

In the hotplug handler, just use the drm dpms functions.
If the monitor is plugged in, turn it on, if it's not,
turn it off.  This also reduces power usage by turning
off the encoder and crtc when the monitor is unplugged.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

- reorganize the functions based on use
- clean up function naming
- rework link training to better match what we use internally
- add initial support for DP 1.2 (no MST yet)
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Required for proper operation with DP bridges.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Fusion hardware often has DP to VGA/LVDS/TMDS bridges to
handle non-DP encoders.  Internally we treat them mostly
like DP.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Used for dp1.2 support and for dp bridges.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

need to wait for the panel to power up.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

eDP is usually used as an LVDS replacement, so treat
it more like LVDS from the user perspective.

v2: encoder mode is always DP for eDP.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

In DP mode, the DP ref clock can come from PPLL, DCPLL, or ext clock,
depending on the asic.  The crtc virtual pixel clock is derived from
the DP ref clock.

- DCE4: PPLL or ext clock
- DCE5: DCPLL or ext clock

Setting ATOM_PPLL_INVALID will cause SetPixelClock to skip
PPLL/DCPLL programming and only program the DP DTO for the
crtc virtual pixel clock.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

- properly mask the ss type
- don't enable ss if type is external or percentage is 0
- if ss enabled and type is external, set ref_div_src to ext clock
- prefer ASIC_INTERNAL_SS_ON_DP to LCD_Info SS_Id for eDP
- fix ss amount calculation
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'keithp/drm-intel-next' of ../drm-next:
  drm/i915: initialize gen6 rps work queue on Sandy Bridge and Ivy Bridge
  drm/i915/sdvo: Reorder i2c initialisation before ddc proxy
  drm/i915: FDI link training broken on Ironlake by Ivybridge integration
  drm/i915: enable rc6 by default
  drm/i915: add fbc enable flag, but disable by default
  drm/i915: clean up unused ring_get_irq/ring_put_irq functions
  drm/i915: fix user irq miss in BSD ring on g4x

It's not used on Ironlake, but is used on later generations, so make
sure it exists before we try to use it in the interrupt handlers.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NKeith Packard <keithp@keithp.com>

The ddc proxy depends upon the underlying i2c bus being selected. Under
certain configurations, the i2c-adapter functionality is queried during
initialisation and so may trigger an OOPS during boot. Hence, we need to
reorder the initialisation of the ddc proxy until after we hook up the i2c
adapter for the SDVO device.

The condition under which it fails is when the i2c_add_adapter calls
into i2c_detect which will attempt to probe all valid addresses on the
adapter iff there is a pre-existing i2c_driver with the same class as
the freshly added i2c_adapter.

So it appears to depend upon having compiled in (or loaded such a
module before i915.ko) an i2c-driver that likes to futz over the
i2c_adapters claiming DDC support.
Reported-by: NMihai Moldovan <ionic@ionic.de>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NKeith Packard <keithp@keithp.com>

Commit 357555c0 split out IVB-specific
register definitions for FDI link training, but a piece of that commit
stopped executing some critical code on Ironlake systems while leaving
it running on Sandybridge.

Turn that code back on both Ironlake and Sandybridge
Signed-off-by: NKeith Packard <keithp@keithp.com>
Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>

With FBC disabled by default, it should be safe to enable RC6.  So let's
give it a try.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: NBen Widawsky <ben@bwidawsk.net>
Signed-off-by: NKeith Packard <keithp@keithp.com>

FBC has too many corner cases that we don't currently deal with, so
disable it by default so we can enable more important features like RC6,
which conflicts in some configurations.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31742Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: NBen Widawsky <ben@bwidawsk.net>
Signed-off-by: NKeith Packard <keithp@keithp.com>

This patch depends on patch "drm/i915: fix user irq miss in BSD ring on
g4x".
Once the previous patch apply, ring_get_irq/ring_put_irq become unused.
So simply remove them.
Signed-off-by: NFeng, Boqun <boqun.feng@intel.com>
Reviewed-by: NXiang, Haihao <haihao.xiang@intel.com>
Signed-off-by: NKeith Packard <keithp@keithp.com>

On g4x, user interrupt in BSD ring is missed.
This is because though g4x and ironlake share the same bsd_ring,
their interrupt control interfaces have _two_ differences.

1.different irq enable/disable functions:
On g4x are i915_enable_irq and i915_disable_irq.
On ironlake are ironlake_enable_irq and ironlake_disable_irq.
2.different irq flag:
On g4x user interrupt flag in BSD ring on is I915_BSD_USER_INTERRUPT.
On ironlake is GT_BSD_USER_INTERRUPT

Old bsd_ring_get/put_irq call ring_get_irq and ring_get_irq.
ring_get_irq and ring_put_irq only call ironlake_enable/disable_irq.
So comes the irq miss on g4x.

To fix this, as other rings' code do, conditionally call different
functions(i915_enable/disable_irq and ironlake_enable/disable_irq)
and use different interrupt flags in bsd_ring_get/put_irq.
Signed-off-by: NFeng, Boqun <boqun.feng@intel.com>
Reviewed-by: NXiang, Haihao <haihao.xiang@intel.com>
Cc: stable@kernel.org
Signed-off-by: NKeith Packard <keithp@keithp.com>

Fix build errors when CONFIG_ACPI is enabled but MXM_WMI is not enabled
by selecting both MXM_WMI and ACPI_WMI (the latter just for kconfig
dependencies):

nouveau_acpi.c:(.text+0x2400c8): undefined reference to `mxm_wmi_call_mxmx'
nouveau_acpi.c:(.text+0x2400cf): undefined reference to `mxm_wmi_call_mxds'
nouveau_acpi.c:(.text+0x2400fe): undefined reference to `mxm_wmi_call_mxmx'
nouveau_acpi.c:(.text+0x2402ba): undefined reference to `mxm_wmi_supported
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'nouveau/drm-nouveau-next' of /ssd/git/drm-nouveau-next: (55 commits)
  drm/nouveau: make cursor_set implementation consistent with other drivers
  drm/nva3/clk: better pll calculation when no fractional fb div available
  drm/nouveau/pm: translate ramcfg strap through ram restrict table
  drm/nva3/pm: allow use of divisor 16
  drm/nvc0/pm: parse clock for pll 0x0a (0x137020) from perf table
  drm/nvc0/pm: correct core/mem/shader perflvl parsing
  drm/nouveau/pm: remove memtiming support check when assigning to perflvl
  drm/nva3: support for memory timing map table
  drm/nouveau: Associate memtimings with performance levels on cards <= nv98
  drm/nva3/pm: initial pass at set_clock() hook
  drm/nvc0/gr: calculate some more of our magic numbers
  drm/nv50: respect LVDS link count from EDID on SPWG panels
  drm/nouveau: recognise DCB connector type 0x41 as LVDS
  drm/nouveau: fix uninitialised variable warning
  drm/nouveau: Fix a crash at card takedown for NV40 and older cards
  drm/nouveau: Free nv04 instmem ramin heap at card takedown
  drm/nva3: somewhat improve clock reporting
  drm/nouveau: pull refclk from vbios on limits 0x40 boards
  drm/nv40/gr: oops, fix random bits getting set in engine obj
  drm/nv50: improve nv50_pm_get_clock()
  ...

When xorg state tracker wants to hide the cursor it calls set_cursor
with NULL buffer_handle and size=0x0, but nouveau refuses to hide it
because size is not 64x64... which is a bit odd. Both radeon and intel
check buffer_handle before validating size of cursor, so make nouveau
implementation consistent with them.
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

The core/mem/shader clocks don't support the fractional feedback divider,
causing our calculated clocks to be off by quite a lot in some cases.  To
solve this we will switch to a search-based algorithm when fN is NULL.

For my NVA8 at PL3, this actually generates identical cooefficients to
the binary driver.  Hopefully that's a good sign, and that does not
break VPLL calculation for someone..
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Hopefully this is how we're supposed to correctly handle when the RAMCFG
strap is above the number of entries in timing-related tables.

It's rather difficult to confirm without finding a configuration where
the ram restrict table doesn't map 8-15 back onto 0-7 anyway.  There's
not a single vbios in the repo which is configured differently..

In any case, this is probably still better than potentially reading
outside of the bounds of various tables..
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

We need to parse some of these other entries still, but I've yet to
determine exactly which PLLs the rest map to.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Really not necessary here, we want to be able to see if/how we managed to
match a timingset to a performance level, even if we can't currently
program it.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

v2 (Ben Skeggs): fix ramcfg strap, and remove bogus handling of perf 0x40
Signed-off-by: NMartin Peres <martin.peres@ensi-bourges.fr>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>