diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-amd/0043-drm-radeon-fix-CP-semaphores-on-CIK.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-amd/0043-drm-radeon-fix-CP-semaphores-on-CIK.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-amd/0043-drm-radeon-fix-CP-semaphores-on-CIK.patch b/common/recipes-kernel/linux/linux-amd/0043-drm-radeon-fix-CP-semaphores-on-CIK.patch new file mode 100644 index 00000000..0e94f860 --- /dev/null +++ b/common/recipes-kernel/linux/linux-amd/0043-drm-radeon-fix-CP-semaphores-on-CIK.patch @@ -0,0 +1,117 @@ +From 6aa3711a4b7e021f834b4b5aaa8e15e8a0fdc808 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig at amd.com> +Date: Wed, 19 Feb 2014 13:21:35 -0500 +Subject: [PATCH 43/60] drm/radeon: fix CP semaphores on CIK +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Christian König <christian.koenig at amd.com> +--- + drivers/gpu/drm/radeon/radeon.h | 4 +++- + drivers/gpu/drm/radeon/radeon_ring.c | 2 +- + drivers/gpu/drm/radeon/radeon_semaphore.c | 19 ++++++++++++++++--- + 3 files changed, 20 insertions(+), 5 deletions(-) + +diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h +index d3f1389..e98da4b 100644 +--- a/drivers/gpu/drm/radeon/radeon.h ++++ b/drivers/gpu/drm/radeon/radeon.h +@@ -137,6 +137,9 @@ extern int radeon_aspm; + /* max number of rings */ + #define RADEON_NUM_RINGS 8 + ++/* number of hw syncs before falling back on blocking */ ++#define RADEON_NUM_SYNCS 4 ++ + /* hardcode those limit for now */ + #define RADEON_VA_IB_OFFSET (1 << 20) + #define RADEON_VA_RESERVED_SIZE (8 << 20) +@@ -553,7 +556,6 @@ int radeon_mode_dumb_mmap(struct drm_file *filp, + /* + * Semaphores. + */ +-/* everything here is constant */ + struct radeon_semaphore { + struct radeon_sa_bo *sa_bo; + signed waiters; +diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c +index 91457f8..529893fc 100644 +--- a/drivers/gpu/drm/radeon/radeon_ring.c ++++ b/drivers/gpu/drm/radeon/radeon_ring.c +@@ -139,7 +139,7 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib, + } + + /* 64 dwords should be enough for fence too */ +- r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_RINGS * 8); ++ r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_SYNCS * 8); + if (r) { + dev_err(rdev->dev, "scheduling IB failed (%d).\n", r); + return r; +diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c +index 2b42aa1..9006b32 100644 +--- a/drivers/gpu/drm/radeon/radeon_semaphore.c ++++ b/drivers/gpu/drm/radeon/radeon_semaphore.c +@@ -34,14 +34,15 @@ + int radeon_semaphore_create(struct radeon_device *rdev, + struct radeon_semaphore **semaphore) + { ++ uint32_t *cpu_addr; + int i, r; + + *semaphore = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL); + if (*semaphore == NULL) { + return -ENOMEM; + } +- r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, +- &(*semaphore)->sa_bo, 8, 8, true); ++ r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, &(*semaphore)->sa_bo, ++ 8 * RADEON_NUM_SYNCS, 8, true); + if (r) { + kfree(*semaphore); + *semaphore = NULL; +@@ -49,7 +50,10 @@ int radeon_semaphore_create(struct radeon_device *rdev, + } + (*semaphore)->waiters = 0; + (*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo); +- *((uint64_t*)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0; ++ ++ cpu_addr = radeon_sa_bo_cpu_addr((*semaphore)->sa_bo); ++ for (i = 0; i < RADEON_NUM_SYNCS; ++i) ++ cpu_addr[i] = 0; + + for (i = 0; i < RADEON_NUM_RINGS; ++i) + (*semaphore)->sync_to[i] = NULL; +@@ -125,6 +129,7 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev, + struct radeon_semaphore *semaphore, + int ring) + { ++ unsigned count = 0; + int i, r; + + for (i = 0; i < RADEON_NUM_RINGS; ++i) { +@@ -140,6 +145,12 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev, + return -EINVAL; + } + ++ if (++count > RADEON_NUM_SYNCS) { ++ /* not enough room, wait manually */ ++ radeon_fence_wait_locked(fence); ++ continue; ++ } ++ + /* allocate enough space for sync command */ + r = radeon_ring_alloc(rdev, &rdev->ring[i], 16); + if (r) { +@@ -164,6 +175,8 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev, + + radeon_ring_commit(rdev, &rdev->ring[i]); + radeon_fence_note_sync(fence, ring); ++ ++ semaphore->gpu_addr += 8; + } + + return 0; +-- +1.9.1 + |