Commit Graph

5776 Commits

Author SHA1 Message Date
Keith Packard
c937504e2b drm/i915: Hold gt_lock across forcewake register reads
Along with the previous patch to make the reset operation protected by
the gt_lock as well, this ensures that all register read operations
will occur with the forcewake hardware enabled. As an added bonus,
this makes read operations more efficient by taking the spinlock only
once per read instead of twice.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-01-19 12:28:53 -08:00
Keith Packard
286fed412a drm/i915: Hold gt_lock during reset
This ensures that no register reads occur while the forcewake state of
the hardware is indeterminate during the reset operation.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-01-19 12:28:42 -08:00
Keith Packard
b6e45f8664 drm/i915: Move reset forcewake processing to gen6_do_reset
No reason to have half of the reset split from the other half.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-01-19 12:27:24 -08:00
Daniel Vetter
9f1f46a45a drm/i915: protect force_wake_(get|put) with the gt_lock
The problem this patch solves is that the forcewake accounting
necessary for register reads is protected by dev->struct_mutex. But the
hangcheck and error_capture code need to access registers without
grabbing this mutex because we hold it while waiting for the gpu.
So a new lock is required. Because currently the error_state capture
is called from the error irq handler and the hangcheck code runs from
a timer, it needs to be an irqsafe spinlock (note that the registers
used by the irq handler (neglecting the error handling part) only uses
registers that don't need the forcewake dance).

We could tune this down to a normal spinlock when we rework the
error_state capture and hangcheck code to run from a workqueue.  But
we don't have any read in a fastpath that needs forcewake, so I've
decided to not care much about overhead.

This prevents tests/gem_hangcheck_forcewake from i-g-t from killing my
snb on recent kernels - something must have slightly changed the
timings. On previous kernels it only trigger a WARN about the broken
locking.

v2: Drop the previous patch for the register writes.

v3: Improve the commit message per Chris Wilson's suggestions.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-19 11:51:31 -08:00
Daniel Vetter
8109021313 drm/i915: convert force_wake_get to func pointer in the gpu reset code
This was forgotten in the original multi-threaded forcewake
conversion:

commit 8d715f0024
Author: Keith Packard <keithp at keithp.com>
Date:   Fri Nov 18 20:39:01 2011 -0800

    drm/i915: add multi-threaded forcewake support

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-13 16:20:06 -08:00
Jesse Barnes
00c2064b77 drm/i915: sprite init failure on pre-SNB is not a failure
We can call the plane init function unconditionally, but don't need to
complain if it fails, since that will only happen if we're out of
memory (and other things will fail) or if we're on the wrong platform
(which is ok).

And remove the DRM_ERRORs from the sprite code itself to avoid dmesg
spam.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-13 15:49:27 -08:00
Rohit Jain
96c0a2f52c drm/i915: VBT Parser cleanup for eDP block
Support for parsing parameters for S3D support and T3 optimization
support is implemented. The order for the bdb_edp struct was also
made similar to that indicated in spec.

Signed-off-by: Rohit Jain <rohit.jain@intel.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Vijay A. Purushothaman <vijay.a.purushothaman@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Acked-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-13 08:37:44 -08:00
Jesse Barnes
7885d2052b drm/i915: mask transcoder select bits before setting them on LVDS
The transcoder port may changed from mode set to mode set, so make sure
to mask out the selection bits before setting the right ones or we'll
get black screens when going from transcoder B to A.

Tested-by: Vincent Vanackere <vincent.vanackere@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-12 21:36:38 -08:00
Keith Packard
a190d703f0 Merge branch 'drm-intel-next-fixes' into drm-intel-fixes 2012-01-12 12:51:06 -08:00
Joel Sass
44306ab302 drm/i915: Add Clientron E830 to the ignore LVDS list
Signed-off-by: Joel Sass <jsass@disklessworkstations.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-12 12:35:42 -08:00
Duncan Laurie
8ca4013d70 CHROMIUM: i915: Add DMI override to skip CRT initialization on ZGB
This is the method used to override LVDS in intel_lvds and appears to be
an effective way to ensure that the driver does not enable VGA hotplug.

This is the same patch from 2.6.32 kernel in R12 but ported to 2.6.38,
will send upstream next.

Signed-off-by: Duncan Laurie <dlaurie@chromium.org>

BUG=chrome-os-partner:117
TEST=Check PORT_HOTPLUG_EN to see if hotplug interrupt is disabled.
Run the following command as root, specifically looking at bit 9:
mmio_read32 $[$(pci_read32 0 2 0 0x10) + 0x61110] = 0x00000000

Change-Id: Id8240f9fb31d058d8d79ee72f7b4615c43893f5a
Reviewed-on: http://gerrit.chromium.org/gerrit/1390
Reviewed-by: Olof Johansson <olofj@chromium.org>
Tested-by: Duncan Laurie <dlaurie@chromium.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-12 12:30:25 -08:00
Linus Torvalds
1a464cbb3d Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux
* 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (307 commits)
  drm/nouveau/pm: fix build with HWMON off
  gma500: silence gcc warnings in mid_get_vbt_data()
  drm/ttm: fix condition (and vs or)
  drm/radeon: double lock typo in radeon_vm_bo_rmv()
  drm/radeon: use after free in radeon_vm_bo_add()
  drm/sis|via: don't return stack garbage from free_mem ioctl
  drm/radeon/kms: remove pointless CS flags priority struct
  drm/radeon/kms: check if vm is supported in VA ioctl
  drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2)
  radeon: Fix disabling PCI bus mastering on big endian hosts.
  ttm: fix agp since ttm tt rework
  agp: Fix multi-line warning message whitespace
  drm/ttm/dma: Fix accounting error when calling ttm_mem_global_free_page and don't try to free freed pages.
  drm/ttm/dma: Only call set_pages_array_wb when the page is not in WB pool.
  drm/radeon/kms: sync across multiple rings when doing bo moves v3
  drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2)
  drm/radeon: GPU virtual memory support v22
  drm: make DRM_UNLOCKED ioctls with their own mutex
  drm: no need to hold global mutex for static data
  drm/radeon/benchmark: common modes sweep ignores 640x480@32
  ...

Fix up trivial conflicts in radeon/evergreen.c and vmwgfx/vmwgfx_kms.c
2012-01-10 11:04:36 -08:00
Dave Airlie
095f979a53 drm/nouveau/pm: fix build with HWMON off
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-10 10:13:16 +00:00
Dan Carpenter
96067adf55 gma500: silence gcc warnings in mid_get_vbt_data()
Add a cast here to silence a Gcc warning.
drivers/gpu/drm/gma500/mid_bios.c:214:28: warning:
  cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-10 10:01:22 +00:00
Dan Carpenter
7920aa5a9d drm/ttm: fix condition (and vs or)
The "if (!p && !p->dev)" condition isn't right because || was intended
instead of &&.  But actually, "p" is the list cursor and so it's always
non-NULL and we can just remove that bit.  We can remove the another
similar check as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-10 10:00:42 +00:00
Eugeni Dodonov
07c1e8c146 drm/i915: handle 3rd pipe
We don't need to check 3rd pipe specifically, as it shares PLL with some
other one.

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-09 14:17:53 -08:00
Eugeni Dodonov
5e5b7fa2ad drm/i915: simplify pipe checking
This is also handled by i915_reg.h, so just reuse this trick to reduce
universe entropy.

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Cyril Brulebois <kibi@debian.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-09 14:17:25 -08:00
Eric Anholt
a05a586239 drm/i915: Print debugfs object list sizes in KiB instead of bytes.
They're all in increments of pages, so this just makes it easier on
the eyes.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-09 14:02:41 -08:00
Dan Carpenter
a7eef882a8 drm/radeon: double lock typo in radeon_vm_bo_rmv()
The second lock should be an unlock or it causes a deadlock.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-09 12:49:48 +00:00
Dan Carpenter
55ba70c406 drm/radeon: use after free in radeon_vm_bo_add()
"bo_va" is dereferenced in the error message.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-09 12:49:21 +00:00
Daniel Vetter
b5215ef1a8 drm/sis|via: don't return stack garbage from free_mem ioctl
Fallout from my "kill drm_sman" refactor. Unfortunately gcc seems to
have failed me and not warned about this.

Tested-by: Jakob Bornecrantz <wallbraker@gmail.com> (on via)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-09 12:11:39 +00:00
Alex Deucher
67e915e49a drm/radeon/kms: check if vm is supported in VA ioctl
Add a VM manager enabled field and use it to check if
vm is enabled.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: jglisse@redhat.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-09 12:10:09 +00:00
Linus Torvalds
98793265b4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
  Kconfig: acpi: Fix typo in comment.
  misc latin1 to utf8 conversions
  devres: Fix a typo in devm_kfree comment
  btrfs: free-space-cache.c: remove extra semicolon.
  fat: Spelling s/obsolate/obsolete/g
  SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
  tools/power turbostat: update fields in manpage
  mac80211: drop spelling fix
  types.h: fix comment spelling for 'architectures'
  typo fixes: aera -> area, exntension -> extension
  devices.txt: Fix typo of 'VMware'.
  sis900: Fix enum typo 'sis900_rx_bufer_status'
  decompress_bunzip2: remove invalid vi modeline
  treewide: Fix comment and string typo 'bufer'
  hyper-v: Update MAINTAINERS
  treewide: Fix typos in various parts of the kernel, and fix some comments.
  clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
  gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
  leds: Kconfig: Fix typo 'D2NET_V2'
  sound: Kconfig: drop unknown symbol ARCH_CLPS7500
  ...

Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
2012-01-08 13:21:22 -08:00
Paulo Zanoni
ba68e08622 drm/i915/sdvo: always set positive sync polarity
This is a revert of 81a14b4684.

We already set the mode polarity using the SDVO commands with struct
intel_sdvo_dtd. We have at least 3 bugs that get fixed with this patch.
The documentation, despite not clear, can also be interpreted in a way
that suggests this patch is needed.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=15766
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42174
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43333
Cc: stable@kernel.org
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-06 14:11:17 -08:00
Rodrigo Vivi
55a6713b3f drm/i915: Removing TV Out modes.
These modes are no longer needed or are not according to TV timing standards.

Intel PRM Vol 3 - Display Registers Updated -
	Section 5 TV-Out Programming /
		5.2.1 Television Standards /
			5.2.1.1 Timing tables

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-06 13:54:12 -08:00
Rodrigo Vivi
23bd15ec66 drm/i915: Fix TV Out refresh rate.
TV Out refresh rate was half of the specification for almost all modes.
Due to this reason pixel clock was so low for some modes causing flickering screen.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-06 13:53:22 -08:00
Dave Airlie
cc1f719429 drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2)
So we have a few places where the drm drivers would like to sleep to
be nice to the system, mainly in the modesetting paths, but we also
have two cases were atomic modesetting must take place, panic writing
and kernel debugger. So provide a central inline to determine if a
sleep or delay should be used and use this in the intel and radeon drivers.

v2: drop intel_drv.h MSLEEP macro, nobody uses it.

Based on patch from Michel Dänzer <michel.daenzer@amd.com>

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43941

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 10:01:35 +00:00
Michel Dänzer
3df96909b7 radeon: Fix disabling PCI bus mastering on big endian hosts.
It would previously write basically random bits to PCI configuration space...
Not very surprising that the GPU tended to stop responding completely. The
resulting MCE even froze the whole machine sometimes.

Now resetting the GPU after a lockup has at least a fighting chance of
succeeding.

Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:40:00 +00:00
Jerome Glisse
dea7e0ac45 ttm: fix agp since ttm tt rework
ttm tt rework modified the way we allocate and populate the
ttm_tt structure, the AGP side was missing some bit to properly
work. Fix those and fix radeon and nouveau AGP support.

Tested on radeon only so far.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:34:03 +00:00
Konrad Rzeszutek Wilk
2c05114d23 drm/ttm/dma: Fix accounting error when calling ttm_mem_global_free_page and don't try to free freed pages.
The code to figure out how many pages to shrink the pool
ends up capping the 'count' at _manager->options.max_size - which is OK.
Except that the 'count' is also used when accounting for how many pages
are recycled - which we end up with the invalid values. This fixes
it by using a different value for the amount of pages to shrink.

On top of that we would free the cached page pool - which is nonsense
as they are deleted from the pool - so there are no free pages in that
pool..

Also we also missed the opportunity to batch the amount of pages
to free (similar to how ttm_page_alloc.c does it). This reintroduces
the code that was lost during rebasing.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:30:15 +00:00
Konrad Rzeszutek Wilk
36d7c537c3 drm/ttm/dma: Only call set_pages_array_wb when the page is not in WB pool.
Otherwise we are doing redundant work. Especially since the 'unbind'
and 'unpopulate' have been merged and nouveau driver ends up calling
it quite excessivly. On a GeForce 8600 GT with Gnome Shell (GNOME 3)
we end up spending about 54% CPU time in __change_page_attr_set_clr
checking the page flags.

The callgraph (annotated) looks as so before this patch:

    53.29%  gnome-shell  [kernel.kallsyms]                   [k] static_protections
            |
            --- static_protections
               |
               |--91.80%-- __change_page_attr_set_clr
               |          change_page_attr_set_clr
               |          set_pages_array_wb
               |          |
               |          |--96.55%-- ttm_dma_unpopulate
               |          |          nouveau_ttm_tt_unpopulate
               |          |          ttm_tt_destroy
               |          |          ttm_bo_cleanup_memtype_use
               |          |          ttm_bo_release
               |          |          kref_put
               |          |          ttm_bo_unref
               |          |          nouveau_gem_object_del
               |          |          drm_gem_object_free
               |          |          kref_put
               |          |          drm_gem_object_unreference_unlocked
               |          |          drm_gem_object_handle_unreference_unlocked.part.1
               |          |          drm_gem_handle_delete
               |          |          drm_gem_close_ioctl
               |          |          drm_ioctl
               |          |          do_vfs_ioctl
               |          |          sys_ioctl
               |          |          system_call_fastpath
               |          |          __GI___ioctl
               |          |
               |           --3.45%-- ttm_dma_pages_put
               |                     ttm_dma_page_pool_free
               |                     ttm_dma_unpopulate
               |                     nouveau_ttm_tt_unpopulate
               |                     ttm_tt_destroy
               |                     ttm_bo_cleanup_memtype_use
               |                     ttm_bo_release
               |                     kref_put
               |                     ttm_bo_unref
               |                     nouveau_gem_object_del
               |                     drm_gem_object_free
               |                     kref_put
               |                     drm_gem_object_unreference_unlocked
               |                     drm_gem_object_handle_unreference_unlocked.part.1
               |                     drm_gem_handle_delete
               |                     drm_gem_close_ioctl
               |                     drm_ioctl
               |                     do_vfs_ioctl
               |                     sys_ioctl
               |                     system_call_fastpath
               |                     __GI___ioctl
               |
                --8.20%-- change_page_attr_set_clr
                          set_pages_array_wb
                          |
                          |--93.76%-- ttm_dma_unpopulate
                          |          nouveau_ttm_tt_unpopulate
                          |          ttm_tt_destroy
                          |          ttm_bo_cleanup_memtype_use
                          |          ttm_bo_release
                          |          kref_put
                          |          ttm_bo_unref
                          |          nouveau_gem_object_del
                          |          drm_gem_object_free
                          |          kref_put
                          |          drm_gem_object_unreference_unlocked
                          |          drm_gem_object_handle_unreference_unlocked.part.1
                          |          drm_gem_handle_delete
                          |          drm_gem_close_ioctl
                          |          drm_ioctl
                          |          do_vfs_ioctl
                          |          sys_ioctl
                          |          system_call_fastpath
                          |          __GI___ioctl
                          |
                           --6.24%-- ttm_dma_pages_put
                                     ttm_dma_page_pool_free
                                     ttm_dma_unpopulate
                                     nouveau_ttm_tt_unpopulate
                                     ttm_tt_destroy
                                     ttm_bo_cleanup_memtype_use
                                     ttm_bo_release
                                     kref_put
                                     ttm_bo_unref
                                     nouveau_gem_object_del
                                     drm_gem_object_free
                                     kref_put
                                     drm_gem_object_unreference_unlocked
                                     drm_gem_object_handle_unreference_unlocked.part.1
                                     drm_gem_handle_delete
                                     drm_gem_close_ioctl
                                     drm_ioctl
                                     do_vfs_ioctl
                                     sys_ioctl
                                     system_call_fastpath
                                     __GI___ioctl

and after this patch all of that disappears.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:29:43 +00:00
Alex Deucher
3000bf3933 drm/radeon/kms: sync across multiple rings when doing bo moves v3
We need to synchronize across rings when doing a bo move to make
sure we the buffer is idle if it's in use by a different ring than
the ring doing the move.

v2: fix fence setup for bo moves

v3: add missing ring lock/unlock

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:16:38 +00:00
Christian König
93504fce28 drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2)
Use semaphores to sync buffers across rings in the CS
ioctl.  Add a reloc flag to allow userspace to skip
sync for buffers.

agd5f: port to latest CS ioctl changes.

v2: add ring lock/unlock to make sure changes hit the ring.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:16:09 +00:00
Jerome Glisse
721604a15b drm/radeon: GPU virtual memory support v22
Virtual address space are per drm client (opener of /dev/drm).
Client are in charge of virtual address space, they need to
map bo into it by calling DRM_RADEON_GEM_VA ioctl.

First 16M of virtual address space is reserved by the kernel.

Once using 2 level page table we should be able to have a small
vram memory footprint for each pt (there would be one pt for all
gart, one for all vram and then one first level for each virtual
address space).

Plan include using the sub allocator for a common vm page table
area and using memcpy to copy vm page table in & out. Or use
a gart object and copy things in & out using dma.

v2: agd5f fixes:
- Add vram base offset for vram pages.  The GPU physical address of a
vram page is FB_OFFSET + page offset.  FB_OFFSET is 0 on discrete
cards and the physical bus address of the stolen memory on
integrated chips.
- VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR covers all vmid's >= 1

v3: agd5f:
- integrate with the semaphore/multi-ring stuff

v4:
- rebase on top ttm dma & multi-ring stuff
- userspace is now in charge of the address space
- no more specific cs vm ioctl, instead cs ioctl has a new
  chunk

v5:
- properly handle mem == NULL case from move_notify callback
- fix the vm cleanup path

v6:
- fix update of page table to only happen on valid mem placement

v7:
- add tlb flush for each vm context
- add flags to define mapping property (readable, writeable, snooped)
- make ring id implicit from ib->fence->ring, up to each asic callback
  to then do ring specific scheduling if vm ib scheduling function

v8:
- add query for ib limit and kernel reserved virtual space
- rename vm->size to max_pfn (maximum number of page)
- update gem_va ioctl to also allow unmap operation
- bump kernel version to allow userspace to query for vm support

v9:
- rebuild page table only when bind and incrementaly depending
  on bo referenced by cs and that have been moved
- allow virtual address space to grow
- use sa allocator for vram page table
- return invalid when querying vm limit on non cayman GPU
- dump vm fault register on lockup

v10: agd5f:
- Move the vm schedule_ib callback to a standalone function, remove
  the callback and use the existing ib_execute callback for VM IBs.

v11:
- rebase on top of lastest Linus

v12: agd5f:
- remove spurious backslash
- set IB vm_id to 0 in radeon_ib_get()

v13: agd5f:
- fix handling of RADEON_CHUNK_ID_FLAGS

v14:
- fix va destruction
- fix suspend resume
- forbid bo to have several different va in same vm

v15:
- rebase

v16:
- cleanup left over of vm init/fini

v17: agd5f:
- cs checker

v18: agd5f:
- reworks the CS ioctl to better support multiple rings and
VM.  Rather than adding a new chunk id for VM, just re-use the
IB chunk id and add a new flags for VM mode.  Also define additional
dwords for the flags chunk id to define the what ring we want to use
(gfx, compute, uvd, etc.) and the priority.

v19:
- fix cs fini in weird case of no ib
- semi working flush fix for ni
- rebase on top of sa allocator changes

v20: agd5f:
- further CS ioctl cleanups from Christian's comments

v21: agd5f:
- integrate CS checker improvements

v22: agd5f:
- final cleanups for release, only allow VM CS on cayman

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-06 09:15:42 +00:00
Ilija Hadzic
09b4ea47d1 drm: make DRM_UNLOCKED ioctls with their own mutex
drm_getclient, drm_getstats and drm_getmap (with a few minor
adjustments) do not need global mutex, so fix that and
make the said ioctls DRM_UNLOCKED. Details:

  drm_getclient: the only thing that should be protected here
  is dev->filelist and that is already protected everywhere with
  dev->struct_mutex.

  drm_getstats: there is no need for any mutex here because the
  loop runs through quasi-static (set at load time only)
  data, and the actual count access is done with atomic_read()

  drm_getmap already uses dev->struct_mutex to protect
  dev->maplist, which also used to protect the same structure
  everywhere else except at three places:
  * drm_getsarea, which doesn't grab *any* mutex before
    touching dev->maplist (so no drm_global_mutex doesn't help
    here either; different issue for a different patch).
    However, drivers seem to call it only at
    initialization time so it probably doesn't matter
  * drm_master_destroy, which is called from drm_master_put,
    which in turn is protected with dev->struct_mutex
    everywhere else in drm module, so we are good here too.
  * drm_getsareactx, which releases the dev->struct_mutex
    too early, but this patch includes the fix for that.

v2: * incorporate comments received from Daniel Vetter
    * include the (long) explanation above to make it clear what
      we are doing (and why), also at Daniel Vetter's request
    * tighten up mutex grab/release locations to only
      encompass real critical sections, rather than some
      random code around them

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 14:43:02 +00:00
Ilija Hadzic
53fead966a drm: no need to hold global mutex for static data
drm_getcap and drm_version ioctls only reads static data,
there is no need to protect them with drm_global_mutex,
so make them DRM_UNLOCKED

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 14:42:52 +00:00
Chen Jie
d7d0a75c44 drm/radeon/benchmark: common modes sweep ignores 640x480@32
Sweep common_modes array should start with index 0.

Signed-off-by: Chen Jie <chenj@lemote.com>
Reviewed-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 14:40:49 +00:00
Alex Deucher
28eebb703e drm/radeon/kms: disable writeback on pre-R300 asics
We often end up missing fences on older asics with
writeback enabled which leads to delays in the userspace
accel code, so just disable it by default on those asics.

Reported-by: Helge Deller <deller@gmx.de>
Reported-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 10:07:10 +00:00
Jerome Glisse
c1341e5280 drm/radeon: allocate semaphore from the ib pool
This allow to share the ib pool with semaphore and avoid
having more bo around.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 10:03:53 +00:00
Jerome Glisse
69e130a6a4 drm/radeon: make ib size variable
This avoid to waste ib pool size and avoid a bunch of wait for
previous ib to finish.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 10:03:33 +00:00
Alex Deucher
1f2e124df9 drm/radeon/kms: add missing ring ready check in sync tests
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 10:02:42 +00:00
Rob Clark
0a7eb243db drm: add support for private planes
In cases where the scanout hw is sufficiently similar between "overlay"
and traditional crtc layers, it might be convenient to allow the driver
to create internal drm_plane helper objects used by the drm_crtc
implementation, rather than duplicate code between the plane and crtc.
A private plane is not exposed to userspace.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 10:00:16 +00:00
Rob Clark
a9971157b6 drm: disconnect plane from fb/crtc when disabled
Since plane->fb and plane->crtc are set in drm_mode_setplane()
after update_plane(), They should be cleared after disable().

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-05 09:24:39 +00:00
Al Viro
2c9ede55ec switch device_get_devnode() and ->devnode() to umode_t *
both callers of device_get_devnode() are only interested in lower 16bits
and nobody tries to return anything wider than 16bit anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:54:55 -05:00
Jesse Barnes
d8e70a254d drm/i915: only set the intel_crtc DPMS mode to on if the mode set succeeded
If it failed, leave it in the "off" state.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 14:55:52 -08:00
Jesse Barnes
7a4198664d drm/i915: don't disable a PCH DPLL that's in use
If a PCH pipe PLL is being used by transcoder C, don't disable it.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 14:55:47 -08:00
Daniel Vetter
e6bfaf8542 drm/i915: don't bail out of intel_wait_ring_buffer too early
In the pre-gem days with non-existing hangcheck and gpu reset code,
this timeout of 3 seconds was pretty important to avoid stuck
processes.

But now we have the hangcheck code in gem that goes to great length
to ensure that the gpu is really dead before declaring it wedged.

So there's no need for this timeout anymore. Actually it's even harmful
because we can bail out too early (e.g. with xscreensaver slip)
when running giant batchbuffers. And our code isn't robust enough
to properly unroll any state-changes, we pretty much rely on the gpu
reset code cleaning up the mess (like cache tracking, fencing state,
active list/request tracking, ...).

With this change intel_begin_ring can only fail when the gpu is
wedged, and it will return -EAGAIN (like wait_request in case the
gpu reset is still outstanding).

v2: Chris Wilson noted that on resume timers aren't running and hence
we won't ever get kicked out of this loop by the hangcheck code. Use
an insanely large timeout instead for the HAS_GEM case to prevent
resume bugs from totally hanging the machine.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 10:26:31 -08:00
Daniel Vetter
4e0e90dcb8 drm/i915: kicking rings stuck on semaphores considered harmful
If our semaphore logic gets confused and we have a ring stuck waiting
for one, there's a decent chance it'll just execute garbage when being
kicked. Also, kicking the ring obscures the place where the error
first occured, making error_state decoding much harder.

So drop this an let gpu reset handle this mess in a clean fashion.

In contrast, kicking rings stuck on MI_WAIT is rather harmless, at
worst there'll be a bit of screen-flickering. There's also old
broken userspace out there which needs this as a  work-around.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@hchris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 10:26:07 -08:00
Eric Anholt
ae662d3126 drm/i915: Add support for resetting the SO write pointers on gen7.
These registers are automatically incremented by the hardware during
transform feedback to track where the next streamed vertex output
should go.  Unlike the previous generation, which had a packet for
setting the corresponding registers to a defined value, gen7 only has
MI_LOAD_REGISTER_IMM to do so.  That's a secure packet (since it loads
an arbitrary register), so we need to do it from the kernel, and it
needs to be settable atomically with the batchbuffer execution so that
two clients doing transform feedback don't stomp on each others'
state.

Instead of building a more complicated interface involcing setting the
registers to a specific value, just set them to 0 when asked and
userland can tweak its pointers accordingly.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 09:31:18 -08:00
Eric Anholt
e959b5db4a drm/i915: Make the fallback IRQ wait not sleep.
The waits we do here are generally so short that sleeping is a bad
idea unless we have an IRQ to wake us up.  Improves regression test
performance from 18 minutes to 3.5 minutes on gen7, which is now
consistent with the previous generation.

Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-03 09:31:16 -08:00