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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 23:04:31 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 23:04:31 (GMT) |
commit | 2e17c5a97e231f3cb426f4b7895eab5be5c5442e (patch) | |
tree | 80871817427250200d6931a45ccb4833c4add74a /include/drm/ttm/ttm_bo_driver.h | |
parent | 5f097cd249f00683442c3e265d6f27d80fc83563 (diff) | |
parent | 774d8e34e46506222bb5e2888e3ef42b2775715f (diff) | |
download | linux-fsl-qoriq-2e17c5a97e231f3cb426f4b7895eab5be5c5442e.tar.xz |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"Okay this is the big one, I was stalled on the fbdev pull req as I
stupidly let fbdev guys merge a patch I required to fix a warning with
some patches I had, they ended up merging the patch from the wrong
place, but the warning should be fixed. In future I'll just take the
patch myself!
Outside drm:
There are some snd changes for the HDMI audio interactions on haswell,
they've been acked for inclusion via my tree. This relies on the
wound/wait tree from Ingo which is already merged.
Major changes:
AMD finally released the dynamic power management code for all their
GPUs from r600->present day, this is great, off by default for now but
also a huge amount of code, in fact it is most of this pull request.
Since it landed there has been a lot of community testing and Alex has
sent a lot of fixes for any bugs found so far. I suspect radeon might
now be the biggest kernel driver ever :-P p.s. radeon.dpm=1 to enable
dynamic powermanagement for anyone.
New drivers:
Renesas r-car display unit.
Other highlights:
- core: GEM CMA prime support, use new w/w mutexs for TTM
reservations, cursor hotspot, doc updates
- dvo chips: chrontel 7010B support
- i915: Haswell (fbc, ips, vecs, watermarks, audio powerwell),
Valleyview (enabled by default, rc6), lots of pll reworking, 30bpp
support (this time for sure)
- nouveau: async buffer object deletion, context/register init
updates, kernel vp2 engine support, GF117 support, GK110 accel
support (with external nvidia ucode), context cleanups.
- exynos: memory leak fixes, Add S3C64XX SoC series support, device
tree updates, common clock framework support,
- qxl: cursor hotspot support, multi-monitor support, suspend/resume
support
- mgag200: hw cursor support, g200 mode limiting
- shmobile: prime support
- tegra: fixes mostly
I've been banging on this quite a lot due to the size of it, and it
seems to okay on everything I've tested it on."
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (811 commits)
drm/radeon/dpm: implement vblank_too_short callback for si
drm/radeon/dpm: implement vblank_too_short callback for cayman
drm/radeon/dpm: implement vblank_too_short callback for btc
drm/radeon/dpm: implement vblank_too_short callback for evergreen
drm/radeon/dpm: implement vblank_too_short callback for 7xx
drm/radeon/dpm: add checks against vblank time
drm/radeon/dpm: add helper to calculate vblank time
drm/radeon: remove stray line in old pm code
drm/radeon/dpm: fix display_gap programming on rv7xx
drm/nvc0/gr: fix gpc firmware regression
drm/nouveau: fix minor thinko causing bo moves to not be async on kepler
drm/radeon/dpm: implement force performance level for TN
drm/radeon/dpm: implement force performance level for ON/LN
drm/radeon/dpm: implement force performance level for SI
drm/radeon/dpm: implement force performance level for cayman
drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
drm/radeon/dpm: add infrastructure to force performance levels
drm/radeon: fix surface setup on r1xx
drm/radeon: add support for 3d perf states on older asics
drm/radeon: set default clocks for SI when DPM is disabled
...
Diffstat (limited to 'include/drm/ttm/ttm_bo_driver.h')
-rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 169 |
1 files changed, 109 insertions, 60 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 9c8dca7..984fc2d 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -33,11 +33,13 @@ #include <ttm/ttm_bo_api.h> #include <ttm/ttm_memory.h> #include <ttm/ttm_module.h> +#include <ttm/ttm_placement.h> #include <drm/drm_mm.h> #include <drm/drm_global.h> #include <linux/workqueue.h> #include <linux/fs.h> #include <linux/spinlock.h> +#include <linux/reservation.h> struct ttm_backend_func { /** @@ -771,6 +773,55 @@ extern int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible); extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); +extern void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo); +extern void ttm_bo_add_to_lru(struct ttm_buffer_object *bo); + +/** + * ttm_bo_reserve_nolru: + * + * @bo: A pointer to a struct ttm_buffer_object. + * @interruptible: Sleep interruptible if waiting. + * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY. + * @use_ticket: If @bo is already reserved, Only sleep waiting for + * it to become unreserved if @ticket->stamp is older. + * + * Will not remove reserved buffers from the lru lists. + * Otherwise identical to ttm_bo_reserve. + * + * Returns: + * -EDEADLK: The reservation may cause a deadlock. + * Release all buffer reservations, wait for @bo to become unreserved and + * try again. (only if use_sequence == 1). + * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by + * a signal. Release all buffer reservations and return to user-space. + * -EBUSY: The function needed to sleep, but @no_wait was true + * -EALREADY: Bo already reserved using @ticket. This error code will only + * be returned if @use_ticket is set to true. + */ +static inline int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, + bool interruptible, + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket) +{ + int ret = 0; + + if (no_wait) { + bool success; + if (WARN_ON(ticket)) + return -EBUSY; + + success = ww_mutex_trylock(&bo->resv->lock); + return success ? 0 : -EBUSY; + } + + if (interruptible) + ret = ww_mutex_lock_interruptible(&bo->resv->lock, ticket); + else + ret = ww_mutex_lock(&bo->resv->lock, ticket); + if (ret == -EINTR) + return -ERESTARTSYS; + return ret; +} /** * ttm_bo_reserve: @@ -778,8 +829,8 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); * @bo: A pointer to a struct ttm_buffer_object. * @interruptible: Sleep interruptible if waiting. * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY. - * @use_sequence: If @bo is already reserved, Only sleep waiting for - * it to become unreserved if @sequence < (@bo)->sequence. + * @use_ticket: If @bo is already reserved, Only sleep waiting for + * it to become unreserved if @ticket->stamp is older. * * Locks a buffer object for validation. (Or prevents other processes from * locking it for validation) and removes it from lru lists, while taking @@ -793,7 +844,7 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); * Processes attempting to reserve multiple buffers other than for eviction, * (typically execbuf), should first obtain a unique 32-bit * validation sequence number, - * and call this function with @use_sequence == 1 and @sequence == the unique + * and call this function with @use_ticket == 1 and @ticket->stamp == the unique * sequence number. If upon call of this function, the buffer object is already * reserved, the validation sequence is checked against the validation * sequence of the process currently reserving the buffer, @@ -808,36 +859,31 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); * will eventually succeed, preventing both deadlocks and starvation. * * Returns: - * -EAGAIN: The reservation may cause a deadlock. + * -EDEADLK: The reservation may cause a deadlock. * Release all buffer reservations, wait for @bo to become unreserved and * try again. (only if use_sequence == 1). * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by * a signal. Release all buffer reservations and return to user-space. * -EBUSY: The function needed to sleep, but @no_wait was true - * -EDEADLK: Bo already reserved using @sequence. This error code will only - * be returned if @use_sequence is set to true. + * -EALREADY: Bo already reserved using @ticket. This error code will only + * be returned if @use_ticket is set to true. */ -extern int ttm_bo_reserve(struct ttm_buffer_object *bo, - bool interruptible, - bool no_wait, bool use_sequence, uint32_t sequence); +static inline int ttm_bo_reserve(struct ttm_buffer_object *bo, + bool interruptible, + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket) +{ + int ret; -/** - * ttm_bo_reserve_slowpath_nolru: - * @bo: A pointer to a struct ttm_buffer_object. - * @interruptible: Sleep interruptible if waiting. - * @sequence: Set (@bo)->sequence to this value after lock - * - * This is called after ttm_bo_reserve returns -EAGAIN and we backed off - * from all our other reservations. Because there are no other reservations - * held by us, this function cannot deadlock any more. - * - * Will not remove reserved buffers from the lru lists. - * Otherwise identical to ttm_bo_reserve_slowpath. - */ -extern int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, - bool interruptible, - uint32_t sequence); + WARN_ON(!atomic_read(&bo->kref.refcount)); + ret = ttm_bo_reserve_nolru(bo, interruptible, no_wait, use_ticket, + ticket); + if (likely(ret == 0)) + ttm_bo_del_sub_from_lru(bo); + + return ret; +} /** * ttm_bo_reserve_slowpath: @@ -849,54 +895,57 @@ extern int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, * from all our other reservations. Because there are no other reservations * held by us, this function cannot deadlock any more. */ -extern int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, - bool interruptible, uint32_t sequence); +static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, + bool interruptible, + struct ww_acquire_ctx *ticket) +{ + int ret = 0; -/** - * ttm_bo_reserve_nolru: - * - * @bo: A pointer to a struct ttm_buffer_object. - * @interruptible: Sleep interruptible if waiting. - * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY. - * @use_sequence: If @bo is already reserved, Only sleep waiting for - * it to become unreserved if @sequence < (@bo)->sequence. - * - * Will not remove reserved buffers from the lru lists. - * Otherwise identical to ttm_bo_reserve. - * - * Returns: - * -EAGAIN: The reservation may cause a deadlock. - * Release all buffer reservations, wait for @bo to become unreserved and - * try again. (only if use_sequence == 1). - * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by - * a signal. Release all buffer reservations and return to user-space. - * -EBUSY: The function needed to sleep, but @no_wait was true - * -EDEADLK: Bo already reserved using @sequence. This error code will only - * be returned if @use_sequence is set to true. - */ -extern int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, - bool interruptible, - bool no_wait, bool use_sequence, - uint32_t sequence); + WARN_ON(!atomic_read(&bo->kref.refcount)); + + if (interruptible) + ret = ww_mutex_lock_slow_interruptible(&bo->resv->lock, + ticket); + else + ww_mutex_lock_slow(&bo->resv->lock, ticket); + + if (likely(ret == 0)) + ttm_bo_del_sub_from_lru(bo); + else if (ret == -EINTR) + ret = -ERESTARTSYS; + + return ret; +} /** - * ttm_bo_unreserve - * + * ttm_bo_unreserve_ticket * @bo: A pointer to a struct ttm_buffer_object. + * @ticket: ww_acquire_ctx used for reserving * - * Unreserve a previous reservation of @bo. + * Unreserve a previous reservation of @bo made with @ticket. */ -extern void ttm_bo_unreserve(struct ttm_buffer_object *bo); +static inline void ttm_bo_unreserve_ticket(struct ttm_buffer_object *bo, + struct ww_acquire_ctx *t) +{ + if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { + spin_lock(&bo->glob->lru_lock); + ttm_bo_add_to_lru(bo); + spin_unlock(&bo->glob->lru_lock); + } + ww_mutex_unlock(&bo->resv->lock); +} /** - * ttm_bo_unreserve_locked + * ttm_bo_unreserve * * @bo: A pointer to a struct ttm_buffer_object. * * Unreserve a previous reservation of @bo. - * Needs to be called with struct ttm_bo_global::lru_lock held. */ -extern void ttm_bo_unreserve_locked(struct ttm_buffer_object *bo); +static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo) +{ + ttm_bo_unreserve_ticket(bo, NULL); +} /* * ttm_bo_util.c |