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drm/msm: rework inactive-work

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Re-arrange things a bit so that we can get work requested after a bo
fence passes, like pageflip, done before retiring bo's.  Without any
sort of bo cache in userspace, some games can trigger hundred's of
transient bo's, which can cause retire to take a long time (5-10ms).
Obviously we want a bo cache.. but this cleanup will make things a
bit easier for atomic as well and makes things a bit cleaner.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: David Brown <davidb@codeaurora.org>
This commit is contained in:
Rob Clark 2013-09-14 14:01:55 -04:00
parent a862391871
commit edd4fc63a3
6 changed files with 71 additions and 33 deletions
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21
drivers/gpu/drm/msm/msm_drv.h
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@ -73,6 +73,9 @@ struct msm_drm_private {
struct workqueue_struct *wq;
/* callbacks deferred until bo is inactive: */
struct list_head fence_cbs;
/* registered IOMMU domains: */
unsigned int num_iommus;
struct iommu_domain *iommus[NUM_DOMAINS];
@ -97,6 +100,20 @@ struct msm_format {
uint32_t pixel_format;
};
/* callback from wq once fence has passed: */
struct msm_fence_cb {
struct work_struct work;
uint32_t fence;
void (*func)(struct msm_fence_cb *cb);
};
void __msm_fence_worker(struct work_struct *work);
#define INIT_FENCE_CB(_cb, _func) do { \
INIT_WORK(&(_cb)->work, __msm_fence_worker); \
(_cb)->func = _func; \
} while (0)
/* As there are different display controller blocks depending on the
* snapdragon version, the kms support is split out and the appropriate
* implementation is loaded at runtime. The kms module is responsible
@ -160,8 +177,8 @@ int msm_gem_prime_pin(struct drm_gem_object *obj);
void msm_gem_prime_unpin(struct drm_gem_object *obj);
void *msm_gem_vaddr_locked(struct drm_gem_object *obj);
void *msm_gem_vaddr(struct drm_gem_object *obj);
int msm_gem_queue_inactive_work(struct drm_gem_object *obj,
struct work_struct *work);
int msm_gem_queue_inactive_cb(struct drm_gem_object *obj,
struct msm_fence_cb *cb);
void msm_gem_move_to_active(struct drm_gem_object *obj,
struct msm_gpu *gpu, bool write, uint32_t fence);
void msm_gem_move_to_inactive(struct drm_gem_object *obj);