From 91700f3cac56a1998a56d41e4459a5cebdb4f752 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Fri, 30 Apr 2010 15:24:17 -0400 Subject: [PATCH] radeon: Split out ring locking and allocation We need to handle the ring while we've already locked it, so split out the allocation and commit functions in order to allow them to be used. Signed-off-by: Matthew Garrett Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon.h | 2 ++ drivers/gpu/drm/radeon/radeon_ring.c | 27 +++++++++++++++++++++------ 2 files changed, 23 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 93ac88eb..e39e2b4 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -471,7 +471,9 @@ int radeon_ib_test(struct radeon_device *rdev); extern void radeon_ib_bogus_add(struct radeon_device *rdev, struct radeon_ib *ib); /* Ring access between begin & end cannot sleep */ void radeon_ring_free_size(struct radeon_device *rdev); +int radeon_ring_alloc(struct radeon_device *rdev, unsigned ndw); int radeon_ring_lock(struct radeon_device *rdev, unsigned ndw); +void radeon_ring_commit(struct radeon_device *rdev); void radeon_ring_unlock_commit(struct radeon_device *rdev); void radeon_ring_unlock_undo(struct radeon_device *rdev); int radeon_ring_test(struct radeon_device *rdev); diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index f6e1e8d..6cc4259 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -258,31 +258,41 @@ void radeon_ring_free_size(struct radeon_device *rdev) } } -int radeon_ring_lock(struct radeon_device *rdev, unsigned ndw) +int radeon_ring_alloc(struct radeon_device *rdev, unsigned ndw) { int r; /* Align requested size with padding so unlock_commit can * pad safely */ ndw = (ndw + rdev->cp.align_mask) & ~rdev->cp.align_mask; - mutex_lock(&rdev->cp.mutex); while (ndw > (rdev->cp.ring_free_dw - 1)) { radeon_ring_free_size(rdev); if (ndw < rdev->cp.ring_free_dw) { break; } r = radeon_fence_wait_next(rdev); - if (r) { - mutex_unlock(&rdev->cp.mutex); + if (r) return r; - } } rdev->cp.count_dw = ndw; rdev->cp.wptr_old = rdev->cp.wptr; return 0; } -void radeon_ring_unlock_commit(struct radeon_device *rdev) +int radeon_ring_lock(struct radeon_device *rdev, unsigned ndw) +{ + int r; + + mutex_lock(&rdev->cp.mutex); + r = radeon_ring_alloc(rdev, ndw); + if (r) { + mutex_unlock(&rdev->cp.mutex); + return r; + } + return 0; +} + +void radeon_ring_commit(struct radeon_device *rdev) { unsigned count_dw_pad; unsigned i; @@ -295,6 +305,11 @@ void radeon_ring_unlock_commit(struct radeon_device *rdev) } DRM_MEMORYBARRIER(); radeon_cp_commit(rdev); +} + +void radeon_ring_unlock_commit(struct radeon_device *rdev) +{ + radeon_ring_commit(rdev); mutex_unlock(&rdev->cp.mutex); } -- 2.7.4