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path: root/drivers/char/drm/drm_fops.c
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* drm: reorganise drm tree to be more future proof.Dave Airlie2008-07-141-466/+0
| | | | | | | | | | | | | | With the coming of kernel based modesetting and the memory manager stuff, the everything in one directory approach was getting very ugly and starting to be unmanageable. This restructures the drm along the lines of other kernel components. It creates a drivers/gpu/drm directory and moves the hw drivers into subdirectores. It moves the includes into an include/drm, and sets up the unifdef for the userspace headers we should be exporting. Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: disable tasklets not IRQs when taking the drm lock spinlockThomas Hellstrom2008-05-071-5/+2
| | | | Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: _end is shadowing real _end, just rename it.Dave Airlie2008-04-261-2/+2
| | | | Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: reorganise minor number handling using backported modesetting code.Dave Airlie2008-04-261-20/+17
| | | | | | rips out the head crap and replaces it with an idr and drm_minor structure Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Fix race that can lockup the kernelMike Isely2008-03-171-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i915_vblank_swap() function schedules an automatic buffer swap upon receipt of the vertical sync interrupt. Such an operation is lengthy so it can't be allowed to happen in normal interrupt context, thus the DRM implements this by scheduling the work in a kernel softirq-scheduled tasklet. In order for the buffer swap to work safely, the DRM's central lock must be taken, via a call to drm_lock_take() located in drivers/char/drm/drm_irq.c within the function drm_locked_tasklet_func(). The lock-taking logic uses a non-interrupt-blocking spinlock to implement the manipulations needed to take the lock. This semantic would be safe if all attempts to use the spinlock only happen from process context. However this buffer swap happens from softirq context which is really a form of interrupt context. Thus we have an unsafe situation, in that drm_locked_tasklet_func() can block on a spinlock already taken by a thread in process context which will never get scheduled again because of the blocked softirq tasklet. This wedges the kernel hard. To trigger this bug, run a dual-head cloned mode configuration which uses the i915 drm, then execute an opengl application which synchronizes buffer swaps against the vertical sync interrupt. In my testing, a lockup always results after running anywhere from 5 minutes to an hour and a half. I believe dual-head is needed to really trigger the problem because then the vertical sync interrupt handling is no longer predictable (due to being interrupt-sourced from two different heads running at different speeds). This raises the probability of the tasklet trying to run while the userspace DRI is doing things to the GPU (and manipulating the DRM lock). The fix is to change the relevant spinlock semantics to be the interrupt-blocking form. After this change I am no longer able to trigger the lockup; the longest test run so far was 20 hours (test stopped after that point). Note: I have examined the places where this spinlock is being employed; all are reasonably short bounded sequences and should be suitable for interrupts being blocked without impacting overall kernel interrupt response latency. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* Use helpers to obtain task pid in printksPavel Emelyanov2007-10-191-3/+4
| | | | | | | | | | | | | | | | The task_struct->pid member is going to be deprecated, so start using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in the kernel. The first thing to start with is the pid, printed to dmesg - in this case we may safely use task_pid_nr(). Besides, printks produce more (much more) than a half of all the explicit pid usage. [akpm@linux-foundation.org: git-drm went and changed lots of stuff] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drm: Replace DRM_IOCTL_ARGS with (dev, data, file_priv) and remove DRM_DEVICE.Eric Anholt2007-10-151-2/+2
| | | | | | | | | The data is now in kernel space, copied in/out as appropriate according to t This results in DRM_COPY_{TO,FROM}_USER going away, and error paths to deal with those failures. This also means that XFree86 4.2.0 support for i810 DR is lost. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: Replace filp in ioctl arguments with drm_file *file_priv.Eric Anholt2007-10-151-17/+17
| | | | | | | | | | As a fallout, replace filp storage with file_priv storage for "unique identifier of a client" all over the DRM. There is a 1:1 mapping, so this should be a noop. This could be a minor performance improvement, as everyth on Linux dereferenced filp to get file_priv anyway, while only the mmap ioct went the other direction. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: detypedeffing continues...Dave Airlie2007-07-111-1/+1
| | | | Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: remove drm_file_t, drm_device_t and drm_head_t typedefsDave Airlie2007-07-111-11/+11
| | | | | | some drivers still todo. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: cleanup list initialisationDave Airlie2007-07-111-3/+0
| | | | Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: cleanup use of Linux list handling macrosDave Airlie2007-07-111-34/+13
| | | | | | | | This makes the drms use of the list handling macros a lot cleaner and more along the lines of how they should be used and uses them in some more places. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: fix driver deadlock with AIGLX and reclaim_buffers_lockedThomas Hellstrom2007-03-231-46/+44
| | | | | | | | | | | | Bugzilla Bug #9457 Add refcounting of user waiters to the DRM hardware lock, so that we can use DRM_LOCK_CONT flag more conservatively. Also add a kernel waiter refcount that if nonzero transfers the lock for the kernel context when it is released. This is useful when waiting for idle and can be used for very simple fence object driver implementations for the new memory manager Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: fix warning in drm_fops.cAndrew Morton2007-03-191-1/+1
| | | | | | | | | | drivers/char/drm/drm_fops.c: In function 'drm_setup': drivers/char/drm/drm_fops.c:60: warning: comparison of distinct pointer types lacks a cast Unfortunately PAGE_SIZE has different types on different architectures. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: fix crash with fops lock and fixup sarea/page size lockingDave Airlie2007-03-111-2/+4
| | | | Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: remove hash tables on drm exitThomas Hellstrom2006-09-221-0/+2
| | | | Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: move drm authentication to new generic hash table.Thomas Hellstrom2006-09-221-4/+2
| | | | | | | Fix drm_remove_magic potential memory leak / corruption. Move drm authentication token hashing to new generic hash table implementation. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: cleanup old compat code and DRM fns from Linux only codeDave Airlie2006-09-221-1/+1
| | | | | | | This patch removes some of the old compatibility macros from the DRM, and removes use of DRM wrappers from Linux specific code. Signed-off-by: Dave Airlie <airlied@linux.ie>
* [PATCH] mark f_ops const in the inodeArjan van de Ven2006-03-281-1/+1
| | | | | | | | | | | Mark the f_ops members of inodes as const, as well as fix the ripple-through this causes by places that copy this f_ops and then "do stuff" with it. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* sem2mutex: drivers/char/drm/Dave Airlie2006-02-021-6/+6
| | | | | | | | | | | | | | From: Arjan van de Ven <arjan@infradead.org> Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: major update from CVS for radeon and coreDave Airlie2006-01-021-123/+166
| | | | | | | | This patch pull in a lot of changes from CVS to the main core DRM, and updates the radeon driver to 1.21.0 that supports r300 texrect and radeon card type ioctl. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: remove drm_flushDave Airlie2005-11-111-14/+0
| | | | | | drm_flush is no longer needed remove. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: remove drm_init.c it is no longer neededDave Airlie2005-11-101-0/+17
| | | | | | Move drm_cpu_valid into drm_fops.c Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: rename driver hooks more understandablyDave Airlie2005-11-101-19/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | Rename the driver hooks in the DRM to something a little more understandable: preinit -> load postinit -> (removed) presetup -> firstopen postsetup -> (removed) open_helper -> open prerelease -> preclose free_filp_priv -> postclose pretakedown -> lastclose postcleanup -> unload release -> reclaim_buffers_locked version -> (removed) postinit and version were replaced with generic code in the Linux DRM (drivers now set their version numbers and description in the driver structure, like on BSD). postsetup wasn't used at all. Fixes the savage hooks for initializing and tearing down mappings at the right times. Testing involved at least starting X, running glxgears, killing glxgears, exiting X, and repeating. Tested on: FreeBSD (g200, g400, r200, r128) Linux (r200, savage4) From: Eric Anholt <anholt@freebsd.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: remove unused components of drm structuresDave Airlie2005-10-241-3/+0
| | | | | | These haven't been used in quite a long time, takes 1K buffer out of structures. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: lindent the drm directory.Dave Airlie2005-09-251-141/+152
| | | | | | | | | I've been threatening this for a while, so no point hanging around. This lindents the DRM code which was always really bad in tabbing department. I've also fixed some misnamed files in comments and removed some trailing whitespace. Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: cleanup buffer/map codeDave Airlie2005-07-101-6/+0
| | | | | | | | | This is a patch from DRM CVS that cleans up some code that was in CVS that I never moved to the kernel, this patch produces the result of the cleanups and puts it into the kernel drm. From: Eric Anholt <anholt@freebsd.org>, Jon Smirl, Dave Airlie Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: misc cleanupDave Airlie2005-07-071-7/+3
| | | | | | | | | | | This patch contains the following cleanups: - make needlessly global functions static - remove the following unused global functions: - drm_fops.c: drm_read - i915_dma.c: i915_do_cleanup_pageflip Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: ctx release can happen before dev->ctxlist is allocatedDave Airlie2005-07-071-1/+1
| | | | | From: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
* drm: fix minor issues caused by core conversionDave Airlie2005-07-071-1/+1
| | | | | | The conversion to core/driver got this check in-correct. Signed-off-by: Dave Airlie <airlied@linux.ie>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+451
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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