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- intel_crt seems the only one to provide it, so init it there.
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We won't get a PFIFO context switch when the same channel ID is recreated if
the hw still thinks the channel is already active, which causes fun issues.
Should allow X to be stopped and started without tearing down the entire
card state in lastclose().
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This avoids seeing garbage from engine setup etc before X gets around
to pointing the CRTCs at a new scanout buffer. Not actually a noticable
problem before G80 as PRAMIN is forced to the end of VRAM by the hardware
already.
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We won't get a PFIFO context switch when the same channel ID is recreated if
the hw still thinks the channel is already active, which causes fun issues.
Should allow X to be stopped and started without tearing down the entire
card state in lastclose().
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With the interrupt enable/disable using only the mask register, it was wrong
to use the enable register to detect which pipes had vblank detection
turned on. Also, as we keep a local copy of the mask register around, and
MSI machines smack the hardware during the interrupt handler, it is more
efficient and more correct to use the local copy.
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This shares common code sequences for managing the interrupt register bits
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Leftover dev_priv from the move of the suspend/resume code into shared-core.
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It would be nice if one day the DRM driver was the canonical source for
register definitions and core macros. To that end, this patch cleans things up
quite a bit, removing redundant definitions (some with different names
referring to the same register) and generally tidying up the header file.
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A mis-spelled config option (was it spelled that way in the past?)
eliminated kmap_atomic_prot_pfn from core DRM.
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I915_GEM_DOMAIN_CPU is very expensive to wait for -- it generally requires
clflushing the frame buffer.
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Clean up queues, free objects. On the next entervt, unmark the hardware to
let the user try again (presumably after resetting the chip). Someday we'll
automatically recover...
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Pin/copy_from_user/unpin through the GTT to eliminate clflush costs.
Benchmarks say this helps quite a bit.
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A mis-spelled config option (was it spelled that way in the past?)
eliminated kmap_atomic_prot_pfn from core DRM.
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- This avoids returning with a mode count of 0, thus not allocating space for the 2nd ioctl.
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I915_GEM_DOMAIN_CPU is very expensive to wait for -- it generally requires
clflushing the frame buffer.
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While debugging the 915, I tried this trick there and accidentally left it
set.
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Clean up queues, free objects. On the next entervt, unmark the hardware to
let the user try again (presumably after resetting the chip). Someday we'll
automatically recover...
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Pin/copy_from_user/unpin through the GTT to eliminate clflush costs.
Benchmarks say this helps quite a bit.
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still not sure which works best on which hardware; this will make it easier
to experiment.
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We depend on the VM fully now for memory protection, separate DMA objects
for VRAM and GART are unneccesary. However, until the next interface break
(soon) a client can't depend on the objects being the same and must still
call NV_OBJ_SET_DMA_* methods appropriately.
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- I made it consistent with recent kernel fb code (maybe this is older bugged code?)
- Still i don't use this and i should leave it to others.
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This avoids seeing garbage from engine setup etc before X gets around
to pointing the CRTCs at a new scanout buffer. Not actually a noticable
problem before G80 as PRAMIN is forced to the end of VRAM by the hardware
already.
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See bug 14289
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Noting that the interrupt mask register was more reliable than the interrupt
enable register for managing interrupts in user_irq_on/user_irq_off, this
patch replaces the remaining IER frobbing with IMR instead.
The test which exposes IER related failures is:
$ glxgears & glxgears & glxgears
(reposition the glxgears windows away from the upper left corner)
$ while :; do x11perf -rect100 -reps 800 -repeat 1; sleep 1; done &
$ while :; do runoa; runet; done &
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This tracks most of the interrupt-related status, including the
interrupt registers in the chip and the sequence number variables.
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Another patch adds this to a /proc/dri file for debugging and monitoring.
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While waiting for the hardware to idle on leavevt or lastclose, poll
for the sync sequence number instead of waiting for an interrupt. This
allows the code to bail if the hardware hangs for some reason. Also, this
avoids issues with signals as the exisiting wait function is interruptible.
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