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2008-07-23intel-gem: Fix pread math and logic errors.Eric Anholt
Fixes an oops in fbotexture from walking off the end of the page list.
2008-07-23intel-gem: Add a quick hack to reduce clflushing on pread.Eric Anholt
This increases overhead for the large-readpixels case due to the repeated page cache accessing, but greatly reduces overhead for the small-readpixels case.
2008-07-23intel-gem: Don't do the GTT-pwrite shortcut on tiled buffers.Eric Anholt
These will be covered by the fence, while pread/pwrite are supposed to be CPU-perspective writes, with manual detiling done by the client.
2008-07-23intel-gem: Move /proc debugging to a separate file.Eric Anholt
2008-07-21intel-gem: Remove recently added pci_read_base prototype.Eric Anholt
This is in pci.h in the fixed patch to the kernel.
2008-07-21intel-gem: Set up HWS when it needs a vaddr during GEM init.Eric Anholt
This requires an updated 2D driver to not try to set it up as well.
2008-07-18drm-gem: Fix buildIan Romanick
On some distros missing prototypes cause kernel builds to fail. These are hack to make the code build.
2008-07-18intel-gem: Leave 8xx tiling on until we find any issues.Eric Anholt
2008-07-14intel-gem: Disable tiling if we get junk from the MCHBAR read.Eric Anholt
One of our systems has been returning 0xffffffff from all MCHBAR reads, which means we'll need to figure out why, or add an alternate detection method.
2008-07-11intel-gem: Add two new ioctls for managing tiling on objects.Eric Anholt
Various chips have exciting interactions between the CPU and the GPU's different ways of accessing interleaved memory, so we need some kernel assistance in determining how it works. Only fully tested on GM965 so far.
2008-07-07[intel-gem] typo fix in DRM_ERROREric Anholt
2008-06-24[intel-gem] Include drm_compat.h to get kmap_atomic_prot_pfnKeith Packard
2008-06-24drm_compat: it's CONFIG_HIGHMEM, not CONFIG_HIMEMKeith Packard
A mis-spelled config option (was it spelled that way in the past?) eliminated kmap_atomic_prot_pfn from core DRM.
2008-06-24[intel-gem] Recover resources from wedged hardware.Keith Packard
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...
2008-06-24[intel-gem] pwrite through GTTKeith Packard
Pin/copy_from_user/unpin through the GTT to eliminate clflush costs. Benchmarks say this helps quite a bit.
2008-06-21[intel-gem] Add /proc/dri/*/i915_gem_interruptKeith Packard
This tracks most of the interrupt-related status, including the interrupt registers in the chip and the sequence number variables.
2008-06-21[intel-gem] Remove unused variable.Keith Packard
2008-06-20[intel-gem] Use polling in i915_gem_idle instead of interrupts.Keith Packard
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.
2008-06-20[intel-gem] Add intel-specific /proc entries to help monitor gem operationKeith Packard
This adds gem_active, gem_flushing, gem_inactive, gem_request and gem_seqno entries to monitor gem operation and help debug issues.
2008-06-20Add device-specific proc_init and proc_cleanup hooksKeith Packard
This allows device drivers to add proc files
2008-06-20[intel-gem] Use shmem_getpage instead of find_or_create_pageKeith Packard
find_or_create_page doesn't quite set up pages correctly; any newly created pages aren't hooked into the shmem object quite right; user space mmaps of those pages end up mapping pages full of zeros which then get written to the real pages inappropriately. This patch requires that the kernel export shmem_getpage.
2008-06-20[intel-gem] Add DRM_IOCTL_I915_GEM_SW_FINISH to flag CPU writesKeith Packard
When a software fallback has completed, usermode must notify the kernel so that any scanout buffers can be synchronized. This ioctl should be called whenever a fallback completes to flush CPU and chipset caches.
2008-06-16[intel] Quirk away MSI support on 945G/GM.Eric Anholt
The PCI caps register reports MSI support even though it isn't really there.
2008-06-16[linux] Use the device's irq for handler setup instead of stale dev->irq.Eric Anholt
This fixes registration when MSI is set up after the stub function fills in dev->irq. Otherwise /proc/interrupts would report attachment to the fasteoi interrupt. dev->irq is still exposed (and updated at IRQ setup) for the drivers that use it for whatever reason.
2008-06-13[intel-gem] Execute MI_FLUSH in leavevt_ioctlKeith Packard
In leavevt_ioctl, queue an MI_FLUSH and then block waiting for it to complete. This will empty the active and flushing lists. That leaves only the inactive list to evict.
2008-06-13[intel-gem] inactive list may contain objects in CPU write domainKeith Packard
Pin/unpin need to know whether to remove/add objects from the inactive list, inactive objects cannot be in any GPU write domain as those would be on the flushing list instead. However, inactive objects may be in the CPU write domain.
2008-06-13[intel-gem] BUG_ON active objects in gem_object_unbindKeith Packard
Now that gem_object_unbind waits for rendering to complete, objects should not be active when they are being pulled from the GTT. BUG_ON if this is broken.
2008-06-13[intel-gem] Debugging -- verify inactive list invariantsKeith Packard
Inactive list elements may not be pinned, active or have non-CPU write domains.
2008-06-13[intel-gem] whitespace fixesKeith Packard
2008-06-13[intel-gem] show total GTT space in /proc/dri/*/gem_objectsKeith Packard
2008-06-13[intel-gem] Wait for rendering to complete before unbinding.Keith Packard
Moving to the CPU domain doesn't ensure that rendering is finished, the buffer may still be in use as a texture or other data source.
2008-06-13[intel-gem] add gtt and pin counts to /proc/dri/*/gem_objectsKeith Packard
Not quite portable, but these are useful for intel. Some more general mechanism could be done...
2008-06-13[intel-gem] Left the last exec buffer pinned. oops.Keith Packard
Loop end variable 'pinned' was set one too low.
2008-06-13[intel-gem] Pin objects during execbufferKeith Packard
Pinning the objects avoids accidentally evicting them while binding other objects.
2008-06-13[intel-gem] throttle based on frames rather than time. Reduces jitter.Keith Packard
Record the last execbuffer sequence for each client. Record that sequence in the throttle ioctl as the 'throttle sequence'. Wait for the last throttle sequence in the throttle ioctl.
2008-06-13[intel-gem] evict_something was failing when wait_request freed objectsKeith Packard
When i915_wait_request clears object from the active list, it may end up freeing them and not moving them to the inactive list. This ends up unbinding objects from the GTT without there ever being new objects visible to i915_gem_evict_something on the inactive list. As the only success condition required the presence of objects on the inactive list, this would falsely assume that no GTT space had been made available, and end up returning -ENOMEM to the application.
2008-06-13[intel] Enable MSI for i915 IRQKeith Packard
2008-06-13[intel-gem] Use a delayed_work instead of a timer + work_structKeith Packard
We want request retirement to occur about once a second when the request queue is non-empty. This was done with a timer that queued a work_struct, using a delayed_work instead makes a lot more sense.
2008-06-13[intel-gem] Reorder i915_add_request to schedule work lastKeith Packard
i915_add_request was calling schedule_delayed_work before adding the request to the list; it makes more sense to do that last.
2008-06-13Use /bin/pwd instead of trusting shell built-inKeith Packard
2008-06-13[gem] Don't require the lock in execbuf now that it's not needed for the ring.Eric Anholt
2008-06-11[gem] Remove the drm_client_lock_take in set_domain.Eric Anholt
We no longer need to use it to protect against shared ringbuffer access.
2008-06-11[gem] Another round of cleanups from checkpatch.plEric Anholt
2008-06-11[gem] Move potentially device-specific ioctls to the intel driver.Eric Anholt
This is the create (may want location flags), pread/pwrite/mmap (performance tuning hints), and set_domain (will 32 bits be enough for everyone?) ioctls. Left in the generic set are just flink/open/close. The 2D driver must be updated for this change, and API but not ABI is broken for 3D. The driver version is bumped to mark this.
2008-06-11Remove override of drm module list in preparation for merge.Eric Anholt
2008-06-11[gem] Remove carefully-sprinkled i915_kernel_lost_context().Eric Anholt
They are not unnecessary since the kernel's the only thing touching the ring.
2008-06-10[gem] Manage the ringbuffer from the kernel in the GEM case.Eric Anholt
This requires that the X Server use the execbuf interface for buffer submission, as it no longer has direct access to the ring. This is therefore a flag day for the gem interface. This also adds enter/leavevt ioctls for use by the X Server. These would get stubbed out in a modesetting implementation, but are required while in an environment where the device's state is only managed by the DRM while X has the VT.
2008-06-06[intel] remove settable use_mi_batchbuffer_startKeith Packard
The driver can know what hardware requires MI_BATCH_BUFFER vs MI_BATCH_BUFFER_START; there's no reason to let user mode configure this.
2008-06-06[intel-gem] Use timers to retire requests periodically.Keith Packard
Without the user IRQ running constantly, there's no wakeup when the ring empties to go retire requests and free buffers. Use a 1 second timer to make that happen more often.
2008-06-06[intel-gem] Add explicit throttle ioctlKeith Packard
Instead of throttling and execbuffer time, have the application ask to throttle explicitly. This allows the throttle to happen less often, and without holding the DRM lock.