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| author | Keith Packard <keithp@keithp.com> | 2011-11-18 20:39:01 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-11-23 13:07:11 -0800 |
| commit | 8d715f0024f64ad1b1be85d8c081cf577944c847 (patch) | |
| tree | 4a0d1f1f36769c60b81fa3deb67ea791d5acc9bf /drivers/gpu/drm/i915/i915_reg.h | |
| parent | f10cdea68b70bd85706baed0decab59618f9c353 (diff) | |
| download | blackbird-op-linux-8d715f0024f64ad1b1be85d8c081cf577944c847.tar.gz blackbird-op-linux-8d715f0024f64ad1b1be85d8c081cf577944c847.zip | |
drm/i915: add multi-threaded forcewake support
On IVB C0+ with newer BIOSes, the forcewake handshake has changed. There's
now a bitfield for different driver components to keep the GT powered
on. On Linux, we centralize forcewake handling in one place, so we
still just need a single bit, but we need to use the new registers if MT
forcewake is enabled.
This needs testing on affected machines. Please reply with your
tested-by if you had problems after a BIOS upgrade and this patch fixes
them.
v2: force MT mode. shift by 16
v3: set MT force wake bits then check ECOBUS
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42923
Tested-by: Manoj Iyer <manoj.iyer@canonical.com>
Tested-by: Robert Hooker <robert.hooker@canonical.com>
Tested-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b080cc824001..8990057e384c 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3449,6 +3449,10 @@ #define FORCEWAKE 0xA18C #define FORCEWAKE_ACK 0x130090 +#define FORCEWAKE_MT 0xa188 /* multi-threaded */ +#define FORCEWAKE_MT_ACK 0x130040 +#define ECOBUS 0xa180 +#define FORCEWAKE_MT_ENABLE (1<<5) #define GT_FIFO_FREE_ENTRIES 0x120008 #define GT_FIFO_NUM_RESERVED_ENTRIES 20 |
