diff options
| author |   Ofir Bitton <obitton@habana.ai> | 2020-07-15 08:52:39 +0300 |
|---|---|---|
| committer |   Oded Gabbay <oded.gabbay@gmail.com> | 2020-09-22 18:49:48 +0300 |
| commit | a98d73c7fae486f7fea83bdec8599d4fccb6807d (patch) | |
| tree | c71fb6159ed23eec22d6b632dca125576b55cd1a /drivers/misc/habanalabs/common/context.c | |
| parent | habanalabs: increase length of ASIC name (diff) | |
| download | linux-dev-a98d73c7fae486f7fea83bdec8599d4fccb6807d.tar.xz linux-dev-a98d73c7fae486f7fea83bdec8599d4fccb6807d.zip | |
habanalabs: Replace dma-fence mechanism with completions
habanalabs driver uses dma-fence mechanism for synchronization.
dma-fence mechanism was designed solely for GPUs, hence we purpose
a simpler mechanism based on completions to replace current
dma-fence objects.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/common/context.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/context.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/misc/habanalabs/common/context.c b/drivers/misc/habanalabs/common/context.c index 3e375958e73b..b168a9fce817 100644 --- a/drivers/misc/habanalabs/common/context.c +++ b/drivers/misc/habanalabs/common/context.c @@ -23,7 +23,7 @@ static void hl_ctx_fini(struct hl_ctx *ctx) */ for (i = 0 ; i < hdev->asic_prop.max_pending_cs ; i++) - dma_fence_put(ctx->cs_pending[i]); + hl_fence_put(ctx->cs_pending[i]); kfree(ctx->cs_pending); @@ -128,7 +128,7 @@ int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx) atomic_set(&ctx->thread_ctx_switch_token, 1); ctx->thread_ctx_switch_wait_token = 0; ctx->cs_pending = kcalloc(hdev->asic_prop.max_pending_cs, - sizeof(struct dma_fence *), + sizeof(struct hl_fence *), GFP_KERNEL); if (!ctx->cs_pending) return -ENOMEM; @@ -184,10 +184,10 @@ int hl_ctx_put(struct hl_ctx *ctx) return kref_put(&ctx->refcount, hl_ctx_do_release); } -struct dma_fence *hl_ctx_get_fence(struct hl_ctx *ctx, u64 seq) +struct hl_fence *hl_ctx_get_fence(struct hl_ctx *ctx, u64 seq) { struct asic_fixed_properties *asic_prop = &ctx->hdev->asic_prop; - struct dma_fence *fence; + struct hl_fence *fence; spin_lock(&ctx->cs_lock); @@ -201,8 +201,9 @@ struct dma_fence *hl_ctx_get_fence(struct hl_ctx *ctx, u64 seq) return NULL; } - fence = dma_fence_get( - ctx->cs_pending[seq & (asic_prop->max_pending_cs - 1)]); + fence = ctx->cs_pending[seq & (asic_prop->max_pending_cs - 1)]; + hl_fence_get(fence); + spin_unlock(&ctx->cs_lock); return fence; |