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path: root/drivers/gpu/drm/msm/msm_ringbuffer.c
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Diffstat (limited to 'drivers/gpu/drm/msm/msm_ringbuffer.c')
-rw-r--r--drivers/gpu/drm/msm/msm_ringbuffer.c36
1 files changed, 26 insertions, 10 deletions
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
index bf065a540130..6ca98da35f63 100644
--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -18,13 +18,15 @@
#include "msm_ringbuffer.h"
#include "msm_gpu.h"
-struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size)
+struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
+ void *memptrs, uint64_t memptrs_iova)
{
struct msm_ringbuffer *ring;
+ char name[32];
int ret;
- if (WARN_ON(!is_power_of_2(size)))
- return ERR_PTR(-EINVAL);
+ /* We assume everwhere that MSM_GPU_RINGBUFFER_SZ is a power of 2 */
+ BUILD_BUG_ON(!is_power_of_2(MSM_GPU_RINGBUFFER_SZ));
ring = kzalloc(sizeof(*ring), GFP_KERNEL);
if (!ring) {
@@ -33,32 +35,46 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size)
}
ring->gpu = gpu;
-
+ ring->id = id;
/* Pass NULL for the iova pointer - we will map it later */
- ring->start = msm_gem_kernel_new(gpu->dev, size, MSM_BO_WC,
- gpu->aspace, &ring->bo, NULL);
+ ring->start = msm_gem_kernel_new(gpu->dev, MSM_GPU_RINGBUFFER_SZ,
+ MSM_BO_WC, gpu->aspace, &ring->bo, NULL);
if (IS_ERR(ring->start)) {
ret = PTR_ERR(ring->start);
ring->start = 0;
goto fail;
}
- ring->end = ring->start + (size / 4);
+ ring->end = ring->start + (MSM_GPU_RINGBUFFER_SZ >> 2);
+ ring->next = ring->start;
ring->cur = ring->start;
- ring->size = size;
+ ring->memptrs = memptrs;
+ ring->memptrs_iova = memptrs_iova;
+
+ INIT_LIST_HEAD(&ring->submits);
+ spin_lock_init(&ring->lock);
+
+ snprintf(name, sizeof(name), "gpu-ring-%d", ring->id);
+
+ ring->fctx = msm_fence_context_alloc(gpu->dev, name);
return ring;
fail:
- if (ring)
- msm_ringbuffer_destroy(ring);
+ msm_ringbuffer_destroy(ring);
return ERR_PTR(ret);
}
void msm_ringbuffer_destroy(struct msm_ringbuffer *ring)
{
+ if (IS_ERR_OR_NULL(ring))
+ return;
+
+ msm_fence_context_free(ring->fctx);
+
if (ring->bo) {
+ msm_gem_put_iova(ring->bo, ring->gpu->aspace);
msm_gem_put_vaddr(ring->bo);
drm_gem_object_unreference_unlocked(ring->bo);
}