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10 years agodrm/radeon/kms: add dpm support for btc (v3)
Alex Deucher [Wed, 26 Jun 2013 04:15:24 +0000 (00:15 -0400)]
drm/radeon/kms: add dpm support for btc (v3)

This adds dpm support for btc asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching (requires additional acpi support)

Set radeon.dpm=1 to enable.

v2: reduce stack usage
v3: attempt to fix state enable

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add dpm support for evergreen (v4)
Alex Deucher [Wed, 26 Jun 2013 04:33:35 +0000 (00:33 -0400)]
drm/radeon/kms: add dpm support for evergreen (v4)

This adds dpm support for evergreen asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching (requires additional acpi support)

Set radeon.dpm=1 to enable.

v2: reduce stack usage, rename ulv struct
v3: fix thermal interrupt check notices by Jerome
v4: fix state enable

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add dpm support for rv7xx (v4)
Alex Deucher [Wed, 26 Jun 2013 04:11:19 +0000 (00:11 -0400)]
drm/radeon/kms: add dpm support for rv7xx (v4)

This adds dpm support for rv7xx asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching

Set radeon.dpm=1 to enable.

v2: reduce stack usage
v3: fix 64 bit div
v4: fix state enable

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add dpm support for rv6xx (v3)
Alex Deucher [Fri, 12 Apr 2013 18:04:10 +0000 (14:04 -0400)]
drm/radeon/kms: add dpm support for rv6xx (v3)

This adds dpm support for rv6xx asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching

Set radeon.dpm=1 to enable.

v2: remove duplicate line
v3: fix thermal interrupt check noticed by Jerome

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon/kms: add dpm support for rs780/rs880
Alex Deucher [Fri, 12 Apr 2013 17:59:22 +0000 (13:59 -0400)]
drm/radeon/kms: add dpm support for rs780/rs880

This adds dpm support for rs780/rs880 asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic voltage scaling

set radeon.dpm=1 to enable it.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add common r600 dpm functions
Alex Deucher [Fri, 12 Apr 2013 17:58:03 +0000 (13:58 -0400)]
drm/radeon/kms: add common r600 dpm functions

These are shared by rs780/rs880, rv6xx, and newer chips.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: fix up dce6 display watermark calc for dpm
Alex Deucher [Thu, 3 May 2012 14:43:25 +0000 (10:43 -0400)]
drm/radeon/kms: fix up dce6 display watermark calc for dpm

Calculate the low and high watermarks based on the low and high
clocks for the current power state.  The dynamic pm hw will select
the appropriate watermark based on the internal dpm state.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: fix up dce4/5 display watermark calc for dpm
Alex Deucher [Tue, 13 Mar 2012 20:25:11 +0000 (16:25 -0400)]
drm/radeon/kms: fix up dce4/5 display watermark calc for dpm

Calculate the low and high watermarks based on the low and high
clocks for the current power state.  The dynamic pm hw will select
the appropriate watermark based on the internal dpm state.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: fix up 6xx/7xx display watermark calc for dpm
Alex Deucher [Thu, 25 Oct 2012 21:02:17 +0000 (17:02 -0400)]
drm/radeon/kms: fix up 6xx/7xx display watermark calc for dpm

Calculate the low and high watermarks based on the low and high
clocks for the current power state.  The dynamic pm hw will select
the appropriate watermark based on the internal dpm state.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: fix up rs780/rs880 display watermark calc for dpm
Alex Deucher [Thu, 25 Oct 2012 20:58:55 +0000 (16:58 -0400)]
drm/radeon/kms: fix up rs780/rs880 display watermark calc for dpm

calculate the low and high watermarks based on the low and high
clocks for the current power state.  The dynamic pm hw will select
the appropriate watermark based on the internal dpm state.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add common dpm infrastructure
Alex Deucher [Fri, 12 Apr 2013 17:55:22 +0000 (13:55 -0400)]
drm/radeon/kms: add common dpm infrastructure

This adds the common dpm (dynamic power management)
infrastructure:
- dpm callbacks
- dpm init/fini/suspend/resume
- dpm power state selection

No device specific code is enabled yet.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add new asic struct for rv6xx (v4)
Alex Deucher [Fri, 21 Jun 2013 18:42:08 +0000 (14:42 -0400)]
drm/radeon/kms: add new asic struct for rv6xx (v4)

Has a different dpm controller than r600.

v2: rebase on gpu reset changes
v3: rebase on get_xclk changes
v4: update rptr/wtpr callbacks

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add atom helper functions for dpm (v3)
Alex Deucher [Mon, 24 Jun 2013 14:50:34 +0000 (10:50 -0400)]
drm/radeon/kms: add atom helper functions for dpm (v3)

dpm needs access to atombios data and command tables
for setup and calculation of a number of parameters.

v2: endian fix
v3: fix mc reg table bug

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: properly set up the RLC on ON/LN/TN (v3)
Alex Deucher [Fri, 12 Apr 2013 17:52:52 +0000 (13:52 -0400)]
drm/radeon: properly set up the RLC on ON/LN/TN (v3)

This is required for certain advanced functionality.

v2: save/restore list takes dword offsets
v3: rebase on gpu reset changes

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: move ucode defines to a separate header
Alex Deucher [Fri, 11 Jan 2013 20:33:13 +0000 (15:33 -0500)]
drm/radeon/kms: move ucode defines to a separate header

Avoids confusion and duplication.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add support for thermal sensor on tn
Alex Deucher [Fri, 14 Dec 2012 16:57:36 +0000 (11:57 -0500)]
drm/radeon: add support for thermal sensor on tn

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: make get_temperature functions a callback
Alex Deucher [Fri, 21 Jun 2013 18:38:03 +0000 (14:38 -0400)]
drm/radeon: make get_temperature functions a callback

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/evergreen: add indirect register accessors for CG registers
Alex Deucher [Fri, 12 Apr 2013 15:49:51 +0000 (11:49 -0400)]
drm/radeon/evergreen: add indirect register accessors for CG registers

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/kms: add accessors for RCU indirect space
Alex Deucher [Fri, 12 Apr 2013 15:27:20 +0000 (11:27 -0400)]
drm/radeon/kms: add accessors for RCU indirect space

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add current KB pci ids
Alex Deucher [Thu, 24 Jan 2013 17:30:24 +0000 (12:30 -0500)]
drm/radeon: add current KB pci ids

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add current Bonaire PCI ids
Alex Deucher [Fri, 7 Jun 2013 15:52:42 +0000 (11:52 -0400)]
drm/radeon: add current Bonaire PCI ids

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add cik tile mode array query
Alex Deucher [Wed, 10 Apr 2013 17:41:25 +0000 (13:41 -0400)]
drm/radeon: add cik tile mode array query

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add radeon_asic struct for CIK (v12)
Alex Deucher [Tue, 9 Apr 2013 20:22:31 +0000 (16:22 -0400)]
drm/radeon: add radeon_asic struct for CIK (v12)

v2: fix up for latest reset changes
v3: use CP for pt updates for now
v4: update for 2 level PTs
v5: update for ib_parse removal
v6: vm_flush api change
v7: rebase
v8: fix gfx ring function pointers
v9: fix vm_set_page function params
v10: update for compute changes
v11: cleanup for release
v12: update rptr/wptr callbacks

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add support for golden register init
Alex Deucher [Tue, 9 Apr 2013 18:43:30 +0000 (14:43 -0400)]
drm/radeon/cik: add support for golden register init

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add support for compute interrupts
Alex Deucher [Tue, 9 Apr 2013 18:26:16 +0000 (14:26 -0400)]
drm/radeon/cik: add support for compute interrupts

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: fix up ring functions for compute rings
Alex Deucher [Thu, 11 Apr 2013 13:36:17 +0000 (09:36 -0400)]
drm/radeon: fix up ring functions for compute rings

The compute rings use RELEASE_MEM rather then EOP
packets for writing fences and there is no SYNC_PFP_ME
packet on the compute rings.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: switch to type3 nop packet for compute rings (v2)
Alex Deucher [Mon, 3 Jun 2013 15:21:58 +0000 (11:21 -0400)]
drm/radeon/cik: switch to type3 nop packet for compute rings (v2)

Type 2 packets are deprecated on CIK MEC and we should use
type 3 nop packets.  Setting the count field to the max value
(0x3fff) indicates that only one dword should be skipped
like a type 2 packet.

v2: add comment to code

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
10 years agodrm/radeon/cik: Add support for compute queues (v4)
Alex Deucher [Wed, 26 Jun 2013 21:37:11 +0000 (17:37 -0400)]
drm/radeon/cik: Add support for compute queues (v4)

On CIK, the compute rings work slightly differently than
on previous asics, however the basic concepts are the same.

The main differences:
- New MEC engines for compute queues
- Multiple queues per MEC:
  - CI/KB: 1 MEC, 4 pipes per MEC, 8 queues per pipe = 32 queues
  -    KV: 2 MEC, 4 pipes per MEC, 8 queues per pipe = 64 queues
- Queues can be allocated and scheduled by another queue
- New doorbell aperture allows you to assign space in the aperture
  for the wptr which allows for userspace access to queues

v2: add wptr shadow, fix eop setup
v3: fix comment
v4: switch to new callback method

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
10 years agodrm/radeon: implement simple doorbell page allocator
Alex Deucher [Mon, 4 Mar 2013 17:47:46 +0000 (12:47 -0500)]
drm/radeon: implement simple doorbell page allocator

The doorbell aperture is a PCI BAR whose pages can be
mapped to compute resources for things like wptrs
for userspace queues.

This patch maps the BAR and sets up a simple allocator
to allocate pages from the BAR.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: use callbacks for ring pointer handling (v3)
Alex Deucher [Tue, 29 Jan 2013 19:10:56 +0000 (14:10 -0500)]
drm/radeon: use callbacks for ring pointer handling (v3)

Add callbacks to the radeon_asic struct to handle
rptr/wptr fetchs and wptr updates.
We currently use one version for all rings, but this
allows us to override with a ring specific versions.

Needed for compute rings on CIK.

v2: udpate as per Christian's comments
v3: fix some rebase cruft

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add srbm_select function
Alex Deucher [Tue, 29 Jan 2013 15:44:22 +0000 (10:44 -0500)]
drm/radeon/cik: add srbm_select function

Allows us to select instanced registers based on:
- ME (micro engine
- Pipe
- Queue
- VMID

Switch MC setup to use this new function.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add UVD support for CIK (v3)
Christian König [Tue, 9 Apr 2013 17:39:21 +0000 (13:39 -0400)]
drm/radeon: add UVD support for CIK (v3)

v2: agd5f: fix clock dividers setup for bonaire
v3: agd5f: rebase

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update radeon_atom_get_clock_dividers for CIK
Alex Deucher [Tue, 19 Feb 2013 19:35:34 +0000 (14:35 -0500)]
drm/radeon: update radeon_atom_get_clock_dividers for CIK

CIK uses a slightly different variant of the table structs
and params.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update radeon_atom_get_clock_dividers() for SI
Alex Deucher [Fri, 7 Jun 2013 15:50:12 +0000 (11:50 -0400)]
drm/radeon: update radeon_atom_get_clock_dividers() for SI

SI uses v5 of the command table and uses a different table
for memory PLLs.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add pcie_port indirect register accessors
Alex Deucher [Wed, 3 Apr 2013 23:28:32 +0000 (19:28 -0400)]
drm/radeon/cik: add pcie_port indirect register accessors

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add get_xclk() callback for CIK
Alex Deucher [Tue, 9 Apr 2013 17:32:18 +0000 (13:32 -0400)]
drm/radeon: add get_xclk() callback for CIK

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add indirect register accessors for SMC registers
Alex Deucher [Fri, 20 Apr 2012 16:39:49 +0000 (12:39 -0400)]
drm/radeon: add indirect register accessors for SMC registers

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update CIK soft reset
Alex Deucher [Tue, 9 Apr 2013 16:59:51 +0000 (12:59 -0400)]
drm/radeon: update CIK soft reset

Update to the newer programming model.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add get_gpu_clock_counter() callback for cik
Alex Deucher [Wed, 19 Dec 2012 03:17:00 +0000 (22:17 -0500)]
drm/radeon: add get_gpu_clock_counter() callback for cik

Used for GPU clock counter snapshots.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Update radeon_info_ioctl for CIK (v2)
Alex Deucher [Fri, 6 Jul 2012 21:40:32 +0000 (17:40 -0400)]
drm/radeon: Update radeon_info_ioctl for CIK (v2)

v2: rebase changes, fix a couple missed cases

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add SS override support for KB/KV
Alex Deucher [Wed, 25 Jul 2012 16:45:16 +0000 (12:45 -0400)]
drm/radeon: add SS override support for KB/KV

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: use frac fb div on DCE8
Alex Deucher [Wed, 19 Dec 2012 03:11:51 +0000 (22:11 -0500)]
drm/radeon: use frac fb div on DCE8

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Handle PPLL0 powerdown on DCE8
Alex Deucher [Tue, 5 Feb 2013 16:58:11 +0000 (11:58 -0500)]
drm/radeon: Handle PPLL0 powerdown on DCE8

Only Bonaire has PPLL0.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add support pll selection for DCE8 (v4)
Alex Deucher [Fri, 14 Sep 2012 15:57:21 +0000 (11:57 -0400)]
drm/radeon: add support pll selection for DCE8 (v4)

v2: make PPLL0 is available for non-DP on CI
v3: rebase changes, update documentation
v4: fix kabini

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update DISPCLK programming for DCE8
Alex Deucher [Fri, 13 Jul 2012 15:04:37 +0000 (11:04 -0400)]
drm/radeon: update DISPCLK programming for DCE8

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/atom: add support for new DVO tables
Alex Deucher [Tue, 24 Jul 2012 23:03:24 +0000 (19:03 -0400)]
drm/radeon/atom: add support for new DVO tables

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/atom: add DCE8 encoder support
Alex Deucher [Thu, 6 Sep 2012 18:32:06 +0000 (14:32 -0400)]
drm/radeon/atom: add DCE8 encoder support

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dce8: crtc_set_base updates
Alex Deucher [Wed, 11 Jul 2012 22:38:29 +0000 (18:38 -0400)]
drm/radeon/dce8: crtc_set_base updates

Some new fields and DESKTOP_HEIGHT register moved.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dce8: properly handle interlaced timing
Alex Deucher [Wed, 11 Jul 2012 22:02:10 +0000 (18:02 -0400)]
drm/radeon/dce8: properly handle interlaced timing

The register bits changed on DCE8 compared to previous
families.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add hw cursor support (v2)
Alex Deucher [Thu, 24 Jan 2013 15:06:33 +0000 (10:06 -0500)]
drm/radeon/cik: add hw cursor support (v2)

CIK (DCE8) hw cursors are programmed the same as evergreen
(DCE4) with the following caveats:
- cursors are now 128x128 pixels
- new alpha blend enable bit

v2: rebase

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/dce8: add support for display watermark setup
Alex Deucher [Fri, 20 Jul 2012 21:13:13 +0000 (17:13 -0400)]
drm/radeon/dce8: add support for display watermark setup

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: update power state parsing for CI
Alex Deucher [Fri, 7 Jun 2013 15:41:05 +0000 (11:41 -0400)]
drm/radeon: update power state parsing for CI

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: handle the integrated thermal controller on CI
Alex Deucher [Wed, 19 Dec 2012 03:07:14 +0000 (22:07 -0500)]
drm/radeon: handle the integrated thermal controller on CI

No support for reading the temperature yet.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: atombios power table updates (v2)
Alex Deucher [Tue, 24 Jul 2012 22:44:47 +0000 (18:44 -0400)]
drm/radeon: atombios power table updates (v2)

v2: further updates

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: upstream atombios.h updates (v2)
Alex Deucher [Fri, 13 Jul 2012 13:59:40 +0000 (09:59 -0400)]
drm/radeon: upstream atombios.h updates (v2)

v2: further updates

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: upstream ObjectID.h updates (v2)
Alex Deucher [Fri, 13 Jul 2012 13:39:44 +0000 (09:39 -0400)]
drm/radeon: upstream ObjectID.h updates (v2)

v2: further updates

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: fill in startup/shutdown callbacks (v5)
Alex Deucher [Fri, 17 Aug 2012 15:48:29 +0000 (11:48 -0400)]
drm/radeon/cik: fill in startup/shutdown callbacks (v5)

v2: update to latest driver changes
v3: properly tear down vm on suspend
v4: fix up irq init ordering
v5: remove outdated comment

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon/cik: add support for doing async VM pt updates (v5)
Alex Deucher [Fri, 31 Aug 2012 15:00:53 +0000 (11:00 -0400)]
drm/radeon/cik: add support for doing async VM pt updates (v5)

Async page table updates using the sDMA engine.  sDMA has a
special packet for updating entries for contiguous pages
that reduces overhead.

v2: add support for and use the CP for now.
v3: update for 2 level PTs
v4: rebase, fix DMA packet
v5: switch to using an IB

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: implement async vm_flush for the sDMA (v6)
Alex Deucher [Mon, 22 Oct 2012 17:04:03 +0000 (13:04 -0400)]
drm/radeon: implement async vm_flush for the sDMA (v6)

Update the page table base address and flush the
VM TLB using the sDMA.

V2: update for 2 level PTs
V3: update vm flush
V4: update SH_MEM* regs
V5: switch back to old style VM TLB invalidate
V6: fix packet formatting

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: add support for sDMA dma engines (v8)
Alex Deucher [Tue, 9 Apr 2013 16:47:11 +0000 (12:47 -0400)]
drm/radeon/cik: add support for sDMA dma engines (v8)

CIK has new asynchronous DMA engines called sDMA
(system DMA).  Each engine supports 1 ring buffer
for kernel and gfx and 2 userspace queues for compute.

TODO: fill in the compute setup.

v2: update to the latest reset code
v3: remove ib_parse
v4: fix copy_dma()
v5: drop WIP compute sDMA queues
v6: rebase
v7: endian fixes for IB
v8: cleanup for release

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: log and handle VM page fault interrupts
Alex Deucher [Thu, 6 Sep 2012 18:24:48 +0000 (14:24 -0400)]
drm/radeon/cik: log and handle VM page fault interrupts

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add support for interrupts on CIK (v5)
Alex Deucher [Fri, 9 Nov 2012 15:45:57 +0000 (10:45 -0500)]
drm/radeon: add support for interrupts on CIK (v5)

Todo:
- handle interrupts for compute queues

v2: add documentation
v3: update to latest reset code
v4: update to latest illegal CP handling
v5: fix missing break in interrupt handler switch statement

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Add support for RLC init on CIK (v4)
Alex Deucher [Fri, 9 Nov 2012 15:44:08 +0000 (10:44 -0500)]
drm/radeon: Add support for RLC init on CIK (v4)

RLC handles the interrupt controller and other tasks
on the GPU.

v2: add documentation
v3: update programming sequence
v4: additional setup

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: implement async vm_flush for the CP (v7)
Alex Deucher [Fri, 31 Aug 2012 14:37:47 +0000 (10:37 -0400)]
drm/radeon: implement async vm_flush for the CP (v7)

Update the page table base address and flush the
VM TLB using the CP.

v2: update for 2 level PTs
v3: use new packet for invalidate
v4: update SH_MEM* regs when flushing the VM
v5: add pfp sync, go back to old style vm TLB invalidate
v6: fix hdp flush packet count
v7: use old style HDP flush

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add ring and IB tests for CIK (v3)
Alex Deucher [Fri, 20 Jul 2012 18:41:35 +0000 (14:41 -0400)]
drm/radeon: add ring and IB tests for CIK (v3)

v2: add documenation
v3: update the latest ib changes

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add IB and fence dispatch functions for CIK gfx (v7)
Alex Deucher [Thu, 5 Jul 2012 15:45:40 +0000 (11:45 -0400)]
drm/radeon: add IB and fence dispatch functions for CIK gfx (v7)

For gfx ring only.  Compute is still todo.

v2: add documentation
v3: update to latest reset changes, integrate emit update patch.
v4: fix count on wait_reg_mem for HDP flush
v5: use old hdp flush method for fence
v6: set valid bit for IB
v7: cleanup for release

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Add CP init for CIK (v7)
Alex Deucher [Wed, 19 Dec 2012 02:47:44 +0000 (21:47 -0500)]
drm/radeon: Add CP init for CIK (v7)

Sets up the GFX ring and loads ucode for GFX and Compute.

Todo:
- handle compute queue setup.

v2: add documentation
v3: integrate with latest reset changes
v4: additional init fixes
v5: scratch reg write back no longer supported on CIK
v6: properly set CP_RB0_BASE_HI
v7: rebase

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add support mc ucode loading on CIK (v2)
Alex Deucher [Fri, 29 Jun 2012 23:44:04 +0000 (19:44 -0400)]
drm/radeon: add support mc ucode loading on CIK (v2)

Load the GDDR5 ucode and train the links.

v2: update ucode

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add initial ucode loading for CIK (v5)
Alex Deucher [Wed, 19 Dec 2012 02:43:07 +0000 (21:43 -0500)]
drm/radeon: add initial ucode loading for CIK (v5)

Currently the driver required 6 sets of ucode:
1. pfp - pre-fetch parser, part of the GFX CP
2. me - micro engine, part of the GFX CP
3. ce - constant engine, part of the GFX CP
4. rlc - interrupt, etc. controller
5. mc - memory controller (discrete cards only)
6. mec - compute engines, part of Compute CP

V2: add documentation
V3: update MC ucode
V4: rebase
V5: update mc ucode

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon/cik: stop page faults from hanging the system (v2)
Alex Deucher [Tue, 18 Sep 2012 20:06:01 +0000 (16:06 -0400)]
drm/radeon/cik: stop page faults from hanging the system (v2)

Redirect invalid memory accesses to the default page
instead of locking up the memory controller.

v2: rebase on top of 2 level PTs

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add support for MC/VM setup on CIK (v6)
Alex Deucher [Tue, 9 Apr 2013 16:45:26 +0000 (12:45 -0400)]
drm/radeon: add support for MC/VM setup on CIK (v6)

The vm callbacks are the same as the SI ones right now
(same regs and bits). We could share the SI variants, and
I may yet do that, but I figured I would add CIK specific
ones for now in case we need to change anything.

V2: add documentation, minor fixes.
V3: integrate vram offset fixes for APUs
V4: enable 2 level VM PTs
V5: index SH_MEM_* regs properly
V6: add ib_parse()

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Add support for CIK GPU reset (v2)
Alex Deucher [Tue, 9 Apr 2013 16:43:41 +0000 (12:43 -0400)]
drm/radeon: Add support for CIK GPU reset (v2)

v2: split soft reset into compute and gfx.  Still need
to make reset more fine grained, but this should be a
start.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add gpu init support for CIK (v9)
Alex Deucher [Tue, 9 Apr 2013 16:41:24 +0000 (12:41 -0400)]
drm/radeon: add gpu init support for CIK (v9)

v2: tiling fixes
v3: more tiling fixes
v4: more tiling fixes
v5: additional register init
v6: rebase
v7: fix gb_addr_config for KV/KB
v8: drop wip KV bits for now, add missing config reg
v9: fix cu count on Bonaire

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: adapt to PCI BAR changes on CIK
Alex Deucher [Wed, 19 Dec 2012 02:24:37 +0000 (21:24 -0500)]
drm/radeon: adapt to PCI BAR changes on CIK

register BAR is now at PCI BAR 5.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add DCE8 macro for CIK
Alex Deucher [Fri, 7 Jun 2013 15:37:11 +0000 (11:37 -0400)]
drm/radeon: add DCE8 macro for CIK

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add CIK chip families
Alex Deucher [Fri, 7 Jun 2013 15:36:11 +0000 (11:36 -0400)]
drm/radeon: add CIK chip families

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add a reset work handler
Alex Deucher [Fri, 14 Jun 2013 13:13:52 +0000 (09:13 -0400)]
drm/radeon: add a reset work handler

New asics support non-privileged IBs.  This allows us
to skip IB checking in the driver since the hardware
will check the command buffers for us.  When using
non-privileged IBs, if the CP encounters an illegal
register in the command stream, it will halt and generate
an interrupt.  The CP needs to be reset to continue.  For now
just do a full GPU reset when this happens.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: add backlight quirk for hybrid mac
Alex Deucher [Mon, 10 Jun 2013 13:57:07 +0000 (09:57 -0400)]
drm/radeon: add backlight quirk for hybrid mac

Mac laptops with multiple GPUs apparently use the gmux
driver for backlight control.  Don't register a radeon
backlight interface.  We may need to add other pci ids
for other hybrid mac laptops.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=65377

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon: fix AVI infoframe generation
Alex Deucher [Fri, 7 Jun 2013 14:41:03 +0000 (10:41 -0400)]
drm/radeon: fix AVI infoframe generation

- remove adding 2 to checksum, this is incorrect.

This was incorrectly introduced in:
92db7f6c860b8190571a9dc1fcbc16d003422fe8
http://lists.freedesktop.org/archives/dri-devel/2011-December/017717.html
However, the off by 2 was due to adding the version twice.
From the examples in the URL above:

[Rafał Miłecki][RV620] fglrx:
0x7454: 00 A8 5E 79     R600_HDMI_VIDEOINFOFRAME_0
0x7458: 00 28 00 10     R600_HDMI_VIDEOINFOFRAME_1
0x745C: 00 48 00 28     R600_HDMI_VIDEOINFOFRAME_2
0x7460: 02 00 00 48     R600_HDMI_VIDEOINFOFRAME_3
===================
(0x82 + 0x2 + 0xD) + 0x1F8 = 0x289
-0x289 = 0x77

However, the payload sum is not 0x1f8, it's 0x1f6.
00 + A8 + 5E + 00 +
00 + 28 + 00 + 10 +
00 + 48 + 00 + 28 +
00 + 48 =
0x1f6

Bits 25:24 of HDMI_VIDEOINFOFRAME_3 are the packet version, not part
of the payload.  So the total would be:
(0x82 + 0x2 + 0xD) + 0x1f6 = 0x287
-0x287 = 0x79

- properly emit the AVI infoframe version.  This was not being
emitted previous which is probably what caused the issue above.

This should fix blank screen when HDMI audio is enabled on
certain monitors.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Cc: Rafał Miłecki <zajec5@gmail.com>
11 years agodrm/radeon: fix UVD on big endian
Alex Deucher [Fri, 7 Jun 2013 14:04:54 +0000 (10:04 -0400)]
drm/radeon: fix UVD on big endian

This fixes the kernel side so that the ring should come
up and ring and IB tests should work.  The userspace
UVD drivers will also need big endian fixes.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: fix write back suspend regression with uvd v2
Jerome Glisse [Thu, 6 Jun 2013 21:51:21 +0000 (17:51 -0400)]
drm/radeon: fix write back suspend regression with uvd v2

UVD ring can't use scratch thus it does need writeback buffer to keep
a valid address or radeon_ring_backup will trigger a kernel fault.

It's ok to not unpin the write back buffer on suspend as it leave in
gtt and thus does not need eviction.

v2: Fix the uvd case.

Reported and tracked by Wojtek <wojtask9@wp.pl>

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: do not try to uselessly update virtual memory pagetable
Jerome Glisse [Thu, 6 Jun 2013 16:41:17 +0000 (12:41 -0400)]
drm/radeon: do not try to uselessly update virtual memory pagetable

If a buffer is never bound to a virtual memory pagetable than don't try
to unbind it. Only drawback is that we don't update the pagetable when
unbinding the ib pool buffer which is fine because it only happens at
suspend or module unload/shutdown.

Fixes spurious messages about buffers without VM mappings. E.g.:
radeon 0000:01:00.0: bo ffff88020afac400 don't has a mapping in vm ffff88021ca2b900

Cc: stable@kernel.org
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agoMerge tag 'drm-intel-fixes-2013-06-11' of git://people.freedesktop.org/~danvet/drm...
Dave Airlie [Tue, 11 Jun 2013 09:38:27 +0000 (19:38 +1000)]
Merge tag 'drm-intel-fixes-2013-06-11' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes

Daniel writes:
Just tiny regression fixes here:
- Two fixes to fix sdvo hotplug which broke in the hpd storm detection
  work.
- One fix to patch-up the sdvo lvds regression fixer from the last pull -
  we need to prefer the vbt mode over edid modes.

* tag 'drm-intel-fixes-2013-06-11' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: prefer VBT modes for SVDO-LVDS over EDID
  drm/i915: Enable hotplug interrupts after querying hw capabilities.
  drm/i915: Fix hotplug interrupt enabling for SDVOC

11 years agoMerge branch 'gma500-fixes' of git://github.com/patjak/drm-gma500 into drm-fixes
Dave Airlie [Mon, 10 Jun 2013 22:16:10 +0000 (08:16 +1000)]
Merge branch 'gma500-fixes' of git://github.com/patjak/drm-gma500 into drm-fixes

Patrik writes:
Two fixes for memory leaks split into Cedarview and Poulsbo versions,
and a fix for properly setting the pipe base when using fbdev. It's on
my todo-list to start unifying the chips since they are very similar,
but until then I'd like to split them up in case there are side-effects
on Cedarview that I cannot currently test.

airled: Verified pull from github matches what I expected.
* 'gma500-fixes' of git://github.com/patjak/drm-gma500:
  drm/gma500/cdv: Fix cursor gem obj referencing on cdv
  drm/gma500/psb: Fix cursor gem obj referencing on psb
  drm/gma500/cdv: Unpin framebuffer on crtc disable
  drm/gma500/psb: Unpin framebuffer on crtc disable
  drm/gma500: Add fb gtt offset to fb base

11 years agoMerge tag 'spi-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Mon, 10 Jun 2013 20:28:39 +0000 (13:28 -0700)]
Merge tag 'spi-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A few nasty issues, particularly a race with the interrupt controller
  in the xilinx driver, together with a couple of more minor fixes and a
  much needed move of the mailing list away from sourceforge."

* tag 'spi-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: hspi: fixup long delay time
  spi: spi-xilinx: Remove ISR race condition
  spi: topcliff-pch: fix error return code in pch_spi_probe()
  spi: topcliff-pch: Pass correct pointer to free_irq()
  spi: Move mailing list to vger

11 years agoMerge tag 'stable/for-linus-3.10-rc5-tag' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Mon, 10 Jun 2013 20:27:46 +0000 (13:27 -0700)]
Merge tag 'stable/for-linus-3.10-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull xen fixes from Konrad Rzeszutek Wilk:
 "Two bug-fixes for regressions:
   - xen/tmem stopped working after a certain combination of
     modprobe/swapon was used
   - cpu online/offlining would trigger WARN_ON."

* tag 'stable/for-linus-3.10-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it.
  xen/smp: Fixup NOHZ per cpu data when onlining an offline CPU.

11 years agoMerge tag 'regmap-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Mon, 10 Jun 2013 20:26:41 +0000 (13:26 -0700)]
Merge tag 'regmap-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "The biggest fix here is Lars-Peter's fix for custom locking callbacks
  which is pretty localised but important for those devices that use the
  feature.  Otherwise we've got a couple of fairly small cleanups which
  would have been sent sooner were it not for letting Lars-Peter's patch
  soak for a while"

* tag 'regmap-v3.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: rbtree: Fixed node range check on sync
  regmap: regcache: Fixup locking for custom lock callbacks
  regmap: debugfs: Check return value of regmap_write()

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Mon, 10 Jun 2013 20:25:50 +0000 (13:25 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a build problem in sahara and temporarily disables two new
  optimisations because of performance regressions until a permanent fix
  is ready"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: sahara - fix building as module
  crypto: blowfish - disable AVX2 implementation
  crypto: twofish - disable AVX2 implementation

11 years agoxen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it.
Konrad Rzeszutek Wilk [Fri, 7 Jun 2013 19:26:03 +0000 (15:26 -0400)]
xen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it.

Commit 10a7a0771399a57a297fca9615450dbb3f88081a ("xen: tmem: enable Xen
tmem shim to be built/loaded as a module") allows the tmem module
to be loaded any time. For this work the frontswap API had to
be able to asynchronously to call tmem_frontswap_init before
or after the swap image had been set. That was added in git
commit 905cd0e1bf9ffe82d6906a01fd974ea0f70be97a
("mm: frontswap: lazy initialization to allow tmem backends to build/run as modules").

Which means we could do this (The common case):

 modprobe tmem [so calls frontswap_register_ops, no ->init]
 modifies tmem_frontswap_poolid = -1
 swapon /dev/xvda1 [__frontswap_init, calls -> init, tmem_frontswap_poolid is
 < 0 so tmem hypercall done]

Or the failing one:

 swapon /dev/xvda1 [calls __frontswap_init, sets the need_init bitmap]
 modprobe tmem [calls frontswap_register_ops, -->init calls, finds out
tmem_frontswap_poolid is 0, does not make a hypercall.
Later in the module_init, sets tmem_frontswap_poolid=-1]

Which meant that in the failing case we would not call the hypercall
to initialize the pool and never be able to make any frontswap
backend calls.

Moving the frontswap_register_ops after setting the tmem_frontswap_poolid
fixes it.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
11 years agodrm/i915: prefer VBT modes for SVDO-LVDS over EDID
Daniel Vetter [Mon, 10 Jun 2013 07:47:58 +0000 (09:47 +0200)]
drm/i915: prefer VBT modes for SVDO-LVDS over EDID

In

commit 53d3b4d7778daf15900867336c85d3f8dd70600c
Author: Egbert Eich <eich@suse.de>
Date:   Tue Jun 4 17:13:21 2013 +0200

    drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC

Egbert Eich fixed a long-standing bug where we simply used a
non-working i2c controller to read the EDID for SDVO-LVDS panels.
Unfortunately some machines seem to not be able to cope with the mode
provided in the EDID. Specifically they seem to not be able to cope
with a 4x pixel mutliplier instead of a 2x one, which seems to have
been worked around by slightly changing the panels native mode in the
VBT so that the dotclock is just barely above 50MHz.

Since it took forever to notice the breakage it's fairly safe to
assume that at least for SDVO-LVDS panels the VBT contains fairly sane
data. So just switch around the order and use VBT modes first.

v2: Also add EDID modes just in case, and spell Egbert correctly.

v3: Elaborate a bit more about what's going on on Chris' machine.

Cc: Egbert Eich <eich@suse.de>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65524
Cc: stable@vger.kernel.org
Reported-and-tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Enable hotplug interrupts after querying hw capabilities.
Chris Wilson [Sun, 9 Jun 2013 15:02:04 +0000 (16:02 +0100)]
drm/i915: Enable hotplug interrupts after querying hw capabilities.

sdvo->hotplug_active is initialised during intel_sdvo_setup_outputs(),
and so we never enabled the hotplug interrupts on SDVO as we were
checking too early.

This regression has been introduced somewhere in the hpd rework for
the storm detection and handling starting with

commit 1d843f9de4e6dc6a899b6f07f106c00da09925e6
Author: Egbert Eich <eich@suse.de>
Date:   Mon Feb 25 12:06:49 2013 -0500

    DRM/I915: Add enum hpd_pin to intel_encoder.

and the follow-up patches to use the new encoder->hpd_pin variable for
the different irq setup functions.

The problem is that encoder->hpd_pin was set up _before_ the output
setup was done and so before we could assess the hotplug capabilities
of the outputs on an sdvo encoder.

Reported-by: Alex Fiestas <afiestas@kde.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58405
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add regression note.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agodrm/i915: Fix hotplug interrupt enabling for SDVOC
Chris Wilson [Sun, 9 Jun 2013 15:02:03 +0000 (16:02 +0100)]
drm/i915: Fix hotplug interrupt enabling for SDVOC

A broken conditional would lead to SDVOC waiting upon hotplug events on
SDVOB - and so miss all activity on its SDVO port.

This regression has been introduced in

commit 1d843f9de4e6dc6a899b6f07f106c00da09925e6
Author: Egbert Eich <eich@suse.de>
Date:   Mon Feb 25 12:06:49 2013 -0500

    DRM/I915: Add enum hpd_pin to intel_encoder.

References: https://bugs.freedesktop.org/show_bug.cgi?id=58405
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add regression note.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
11 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Mon, 10 Jun 2013 01:01:45 +0000 (18:01 -0700)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "This is purely regressions (though not all recent ones) or stable
  material"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Partial revert of "Context switch more PMU related SPRs"
  powerpc/perf: Fix deadlock caused by calling printk() in PMU exception
  powerpc/hw_breakpoints: Add DABRX cpu feature to fix 32-bit regression
  powerpc/power8: Update denormalization handler
  powerpc/pseries: Simplify denormalization handler
  powerpc/power8: Fix oprofile and perf
  powerpc/eeh: Don't check RTAS token to get PE addr
  powerpc/pci: Check the bus address instead of resource address in pcibios_fixup_resources

11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Mon, 10 Jun 2013 00:15:56 +0000 (17:15 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "The biggest two fixes are fixing a compilation error with the
  decompressor, and a problem with our __my_cpu_offset implementation.

  Other changes are very trivial and small, which seems to be the way
  for most -rc stuff."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7747/1: pcpu: ensure __my_cpu_offset cannot be re-ordered across barrier()
  ARM: 7750/1: update legacy CPU ID in decompressor cache support jump table
  ARM: 7743/1: compressed/head.S: work around new binutils warning
  ARM: 7742/1: topology: export cpu_topology
  ARM: 7737/1: fix kernel decompressor compilation error with CONFIG_DEBUG_SEMIHOSTING

11 years agopowerpc: Partial revert of "Context switch more PMU related SPRs"
Michael Ellerman [Wed, 5 Jun 2013 18:03:36 +0000 (18:03 +0000)]
powerpc: Partial revert of "Context switch more PMU related SPRs"

In commit 59affcd I added context switching of more PMU SPRs, because
they are potentially exposed to userspace on Power8. However despite me
being a smart arse in the commit message it's actually not correct. In
particular it interacts badly with a global perf record.

We will have to do something more complicated, but that will have to
wait for 3.11.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/perf: Fix deadlock caused by calling printk() in PMU exception
Michael Ellerman [Wed, 5 Jun 2013 17:58:20 +0000 (17:58 +0000)]
powerpc/perf: Fix deadlock caused by calling printk() in PMU exception

In commit bc09c21 "Fix finding overflowed PMC in interrupt" we added
a printk() to the PMU exception handler. Unfortunately that is not safe.

The problem is that the PMU exception may run even when interrupts are
soft disabled, aka NMI context. We do this so that we can profile parts
of the kernel that have interrupts soft-disabled.

But by calling printk() from the exception handler, we can potentially
deadlock in the printk code on logbuf_lock, eg:

  [c00000038ba575c0c000000000081928 .vprintk_emit+0xa8/0x540
  [c00000038ba576a0c0000000007bcde8 .printk+0x48/0x58
  [c00000038ba57710c000000000076504 .perf_event_interrupt+0x2d4/0x490
  [c00000038ba57810c00000000001f6f8 .performance_monitor_exception+0x48/0x60
  [c00000038ba57880c0000000000032cc performance_monitor_common+0x14c/0x180
  --- Exception: f01 (Performance Monitor) at c0000000007b25d4 ._raw_spin_lock_irq
  +0x64/0xc0
  [c00000038ba57bf0c00000000007ed90 .devkmsg_read+0xd0/0x5a0
  [c00000038ba57d00c0000000001c2934 .vfs_read+0xc4/0x1e0
  [c00000038ba57d90c0000000001c2cd8 .SyS_read+0x58/0xd0
  [c00000038ba57e30c000000000009d54 syscall_exit+0x0/0x98
  --- Exception: c01 (System Call) at 00001fffffbf6f7c
  SP (3ffff6d4de10) is in userspace

Fix it by making sure we only call printk() when we are not in NMI
context.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: <stable@vger.kernel.org> # 3.9
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/hw_breakpoints: Add DABRX cpu feature to fix 32-bit regression
Michael Neuling [Thu, 16 May 2013 20:27:31 +0000 (20:27 +0000)]
powerpc/hw_breakpoints: Add DABRX cpu feature to fix 32-bit regression

When introducing support for DABRX in 4474ef0, we broke older 32-bit CPUs
that don't have that register.

Some CPUs have a DABR but not DABRX.  Configuration are:
- No 32bit CPUs have DABRX but some have DABR.
- POWER4+ and below have the DABR but no DABRX.
- 970 and POWER5 and above have DABR and DABRX.
- POWER8 has DAWR, hence no DABRX.

This introduces CPU_FTR_DABRX and sets it on appropriate CPUs.  We use
the top 64 bits for CPU FTR bits since only 64 bit CPUs have this.

Processors that don't have the DABRX will still work as they will fall
back to software filtering these breakpoints via perf_exclude_event().

Signed-off-by: Michael Neuling <mikey@neuling.org>
Reported-by: "Gorelik, Jacob (335F)" <jacob.gorelik@jpl.nasa.gov>
cc: stable@vger.kernel.org (v3.9 only)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/power8: Update denormalization handler
Michael Neuling [Wed, 29 May 2013 21:33:19 +0000 (21:33 +0000)]
powerpc/power8: Update denormalization handler

POWER8 can take a denormalisation exception on any VSX registers.

This does the extra 32 VSX registers we don't currently handle.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/pseries: Simplify denormalization handler
Michael Neuling [Wed, 29 May 2013 21:33:18 +0000 (21:33 +0000)]
powerpc/pseries: Simplify denormalization handler

The following simplifies the denorm code by using macros to generate the long
stream of almost identical instructions.

This patch results in no changes to the output binary, but removes a lot of
lines of code.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/power8: Fix oprofile and perf
Michael Neuling [Tue, 4 Jun 2013 19:38:54 +0000 (19:38 +0000)]
powerpc/power8: Fix oprofile and perf

In 2ac6f42 powerpc/cputable: Fix oprofile_cpu_type on power8
we broke all power8 hw events.

This reverts this change and uses oprofile_type instead. Perf now works
on POWER8 again and oprofile will revert to using timers on POWER8.

Kudos to mpe this fix.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>