Final driver! \o/

This is not a proper dma_fence because the hardware may never signal
anything, so don't use dma-buf with qxl, ever.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>

Use the new fence interface on vmwgfx too.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

---
Changes since v1:
Fix a sleeping function called from invalid context in enable_signaling.

Only one type was ever used. This is needed to simplify the fence
support in the next commit.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

Changes since v1:
- Kill the sw interrupt dance, add and use
  radeon_irq_kms_sw_irq_get_delayed instead.
- Change custom wait function, lockdep complained about it.
  Holding exclusive_lock in the wait function might cause deadlocks.
  Instead do all the processing in .enable_signaling, and wait
  on the global fence_queue to pick up gpu resets.
- Process all fences in radeon_gpu_reset after reset to close a race
  with the trylock in enable_signaling.
Changes since v2:
- Small changes to work with the rewritten lockup recovery patches.
Changes since v3:
- Call radeon_fence_schedule_check when exclusive_lock cannot be
  acquired to always cause a wake up.
- Reset irqs from hangup check.
- Drop reading seqno in the callback, use cached value.
- Fix indentation in radeon_fence_default_wait
- Add a radeon_test_signaled function, drop a few test_bit calls.
- Make to_radeon_fence global.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

This reorders the list to keep track of what buffers are reserved,
so previous members are always unreserved.

This gets rid of some bookkeeping that's no longer needed,
while simplifying the code some.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

It seems some drivers really want this as a parameter,
like vmwgfx.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

No users are left, kill it off! :D
Conversion to the reservation api is next on the list, after
that the functionality can be restored with rcu.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

This is the last remaining function that doesn't use the reservation
lock completely to fence off access to a buffer.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

This will ensure we always hold the required lock when calling those functions.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>

Apart from some code inside ttm itself and nouveau_bo_vma_del,
this is the only place where ttm_bo_wait is used without a reservation.
Fix this so we can remove the fence_lock later on.

After the switch to rcu the reservation lock will be
removed again.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>

Just clearing out my -next queue before I go on vacation.  Two UVD
improvements that depend on the ttm change you just merged.

* 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: preallocate mem for UVD create/destroy msg
  drm/radeon: allow UVD to use a second 256MB segment

llocating memory for UVD create and destroy messages can fail, which is
rather annoying when this happens in the middle of a GPU reset. Try to
avoid this condition by preallocating a page for those dummy messages.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This improves concurrent stream decoding.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

More radeon changes for drm-next.  Highlights:
- UVD support for older asics
- Reset rework in preparation for Maarten's fence patches
I have a few more patches which depend on Christian's ttm changes,
I'll send them out separately once you've merged the ttm changes.

* 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: drop doing resets in a work item
  drm/radeon: drop RADEON_FENCE_SIGNALED_SEQ v2
  drm/radeon: add timeout argument to radeon_fence_wait_seq v2
  drm/radeon: handle lockup in delayed work, v5
  drm/radeon: take exclusive_lock in read mode during ring tests, v5
  drm/radeon: force fence completion only on problematic rings (v2)
  drm/radeon: wake up all fences on manual reset
  drm/radeon: add UVD fw names for older asic
  drm/radeon: enable RB_ARB before resetting the VCPU
  drm/radeon: 760G/780V/880V don't have UVD
  drm/radeon: implement UVD hw workarounds for R6xx v3
  drm/radeon: add UVD support for older asics v4
  drm/radeon: add set_uvd_clocks callback for r6xx v4
  drm/radeon: properly init UVD MC bits on R600
  drm/radeon: force UVD buffers into VRAM on RS[78]80 v2
  drm/radeon: move the IB test after the AGP fallback

pull in placement changes radeon requires.

* 'ttm_pfn' of git://people.freedesktop.org/~deathsimple/linux:
  drm/ttm: move fpfn and lpfn into each placement v2

Blocking completely innocent processes with a GPU reset is
a pretty bad idea. Just set needs_reset and let the next
command submission or fence wait do the job.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

It's causing issues with VMID handling and comparing the
fence value two times actually doesn't make handling faster.

v2: rebased on reset changes
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This makes it possible to wait for a specific amount of time,
rather than wait until infinity.

v2 (chk): rebased on other changes
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

v5 (chk): complete rework, start when the first fence is emitted,
          stop when the last fence is signalled, make it work
          correctly with GPU resets, cleanup radeon_fence_wait_seq
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This is needed for the next commit, because the lockup detection
will need the read lock to run.

v4 (chk): split out forced fence completion, remove unrelated changes,
          add and handle in_reset flag
v5 (agd5f): rebase fix
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Instead of resetting all fence numbers, only reset the
number of the problematic ring. Split out from a patch
from Maarten Lankhorst <maarten.lankhorst@canonical.com>

v2 (agd5f): rebase build fix
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Wake up all fences when we manually trigger a reset.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Activating the UVD support.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This fixes "UVD not responding, trying to reset the VCPU"
messages on earlier ASICs.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Don't enable UVD on these asics as they don't have
UVD hardware.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Only the essentials, cause this hw generation is really buggy.

v2: start supporting RV670,RV620 and RV635 as well
v3: activate more workarounds
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

v2: cleanup R600 support
v3: rebased on current drm-fixes-3.12
v4: rebased on drm-next-3.14
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

v2: wake up PLL, set [VD]CLK_SRC, cleanup code
v3: handle RV670,RV635,RV620 as well
v4: merge rv6xx and rs780/rs880 code, fix ref divider mask
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

v2: only necessary on RS[78]80
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Otherwise we won't test if the fallback to PCIe GART really worked.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This allows us to more fine grained specify where to place the buffer object.

v2: rebased on drm-next, add bochs changes as well
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

radeon userptr support.

* 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: allow userptr write access under certain conditions
  drm/radeon: add userptr flag to register MMU notifier v3
  drm/radeon: add userptr flag to directly validate the BO to GTT
  drm/radeon: add userptr flag to limit it to anonymous memory v2
  drm/radeon: add userptr support v8

Conflicts:
	drivers/gpu/drm/radeon/radeon_prime.c

- Setting dp M2/N2 values plus state checker support (Vandana Kannan)
- chv power well support (Ville)
- DP training pattern 3 support for chv (Ville)
- cleanup of the hsw/bdw ddi pll code, prep work for skl (Damien)
- dsi video burst mode support (Shobhit)
- piles of other chv fixes all over (Ville et. al.)
- cleanup of the ddi translation tables setup code (Damien)
- 180 deg rotation support (Ville & Sonika Jindal)

* tag 'drm-intel-next-2014-08-08' of git://anongit.freedesktop.org/drm-intel: (59 commits)
  drm/i915: Update DRIVER_DATE to 20140808
  drm/i915: No busy-loop wait_for in the ring init code
  drm/i915: Add sprite watermark programming for VLV and CHV
  drm/i915: Round-up clock and limit drain latency
  drm/i915: Generalize drain latency computation
  drm/i915: Free pending page flip events at .preclose()
  drm/i915: clean up PPGTT checking logic
  drm/i915: Polish the chv cmnlane resrt macros
  drm/i915: Hack to tie both common lanes together on chv
  drm/i915: Add cherryview_update_wm()
  drm/i915: Update DDL only for current CRTC
  drm/i915: Parametrize VLV_DDL registers
  drm/i915: Fill out the FWx watermark register defines
  drm: Resetting rotation property
  drm/i915: Add rotation property for sprites
  drm: Add rotation_property to mode_config
  drm/i915: Make intel_plane_restore() return an error
  drm/i915: Add 180 degree sprite rotation support
  drm/i915: Introduce a for_each_intel_encoder() macro
  drm/i915: Demote the DRRS messages to debug messages
  ...

So small drm stuff all over for 3.18. Biggest one is the cmdline parsing
from Chris with a few fixes from me to make it work for stupid kernel
configs.

Plus the atomic prep series.

Tested for more than a week in -nightly and Ville/Imre indeed discovered
some fun which is now fixed (and i915 vblank patches postponed since the
fixups need this branch plus drm-intel-next merged together).

* tag 'topic/core-stuff-2014-08-15' of git://anongit.freedesktop.org/drm-intel:
  drm: Use the type of the array element when reallocating
  drm: Don't return 0 for a value used as a denominator
  drm: Docbook fixes
  drm/irq: Implement a generic vblank_wait function
  drm: Add a plane->reset hook
  drm: trylock modest locking for fbdev panics
  drm: Move ->old_fb from crtc to plane
  drm: Handle legacy per-crtc locking with full acquire ctx
  drm: Move modeset_lock_all helpers to drm_modeset_lock.[hc]
  drm: Add drm_plane/connector_index
  drm: idiot-proof vblank
  drm: Warn when leaking flip events on close
  drm: Perform cmdline mode parsing during connector initialisation
  video/fbdev: Always built-in video= cmdline parsing
  drm: Don't grab an fb reference for the idr

Pull NFS client fixes from Trond Myklebust:
 "Highlights:

   - more fixes for read/write codepath regressions
     * sleeping while holding the inode lock
     * stricter enforcement of page contiguity when coalescing requests
     * fix up error handling in the page coalescing code

   - don't busy wait on SIGKILL in the file locking code"

* tag 'nfs-for-3.17-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Don't busy-wait on SIGKILL in __nfs_iocounter_wait
  nfs: can_coalesce_requests must enforce contiguity
  nfs: disallow duplicate pages in pgio page vectors
  nfs: don't sleep with inode lock in lock_and_join_requests
  nfs: fix error handling in lock_and_join_requests
  nfs: use blocking page_group_lock in add_request
  nfs: fix nonblocking calls to nfs_page_group_lock
  nfs: change nfs_page_group_lock argument

Merge tag 'renesas-sh-drivers-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas

Pull SH driver fix from Simon Horman:
 "Confine SH_INTC to platforms that need it"

* tag 'renesas-sh-drivers-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  sh: intc: Confine SH_INTC to platforms that need it

Pull MIPS fixes from Ralf Baechle:
 "Pretty much all across the field so with this we should be in
  reasonable shape for the upcoming -rc2"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: OCTEON: make get_system_type() thread-safe
  MIPS: CPS: Initialize EVA before bringing up VPEs from secondary cores
  MIPS: Malta: EVA: Rename 'eva_entry' to 'platform_eva_init'
  MIPS: EVA: Add new EVA header
  MIPS: scall64-o32: Fix indirect syscall detection
  MIPS: syscall: Fix AUDIT value for O32 processes on MIPS64
  MIPS: Loongson: Fix COP2 usage for preemptible kernel
  MIPS: NL: Fix nlm_xlp_defconfig build error
  MIPS: Remove race window in page fault handling
  MIPS: Malta: Improve system memory detection for '{e, }memsize' >= 2G
  MIPS: Alchemy: Fix db1200 PSC clock enablement
  MIPS: BCM47XX: Fix reboot problem on BCM4705/BCM4785
  MIPS: Remove duplicated include from numa.c
  MIPS: Add common plat_irq_dispatch declaration
  MIPS: MSP71xx: remove unused plat_irq_dispatch() argument
  MIPS: GIC: Remove useless parens from GICBIS().
  MIPS: perf: Mark pmu interupt IRQF_NO_THREAD