disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/gpu/arm/bifrost/csf/mali_kbase_csf_tiler_heap_def.h
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@@ -1,7 +1,7 @@
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 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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 /*
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  *
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- * (C) COPYRIGHT 2020-2021 ARM Limited. All rights reserved.
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+ * (C) COPYRIGHT 2020-2022 ARM Limited. All rights reserved.
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  *
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  * This program is free software and is provided to you under the terms of the
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  * GNU General Public License version 2 as published by the Free Software
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@@ -56,27 +56,38 @@
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 	((CHUNK_HDR_NEXT_ADDR_MASK >> CHUNK_HDR_NEXT_ADDR_POS) << \
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 	 CHUNK_HDR_NEXT_ADDR_ENCODE_SHIFT)
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+/* The size of the area needed to be vmapped prior to handing the tiler heap
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+ * over to the tiler, so that the shrinker could be invoked.
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+ */
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+#define NEXT_CHUNK_ADDR_SIZE (sizeof(u64))
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+
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 /**
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  * struct kbase_csf_tiler_heap_chunk - A tiler heap chunk managed by the kernel
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+ *
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+ * @link:   Link to this chunk in a list of chunks belonging to a
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+ *          @kbase_csf_tiler_heap.
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+ * @region: Pointer to the GPU memory region allocated for the chunk.
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+ * @map:    Kernel VA mapping so that we would not need to use vmap in the
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+ *          shrinker callback, which can allocate. This maps only the header
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+ *          of the chunk, so it could be traversed.
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+ * @gpu_va: GPU virtual address of the start of the memory region.
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+ *          This points to the header of the chunk and not to the low address
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+ *          of free memory within it.
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  *
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  * Chunks are allocated upon initialization of a tiler heap or in response to
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  * out-of-memory events from the firmware. Chunks are always fully backed by
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  * physical memory to avoid the overhead of processing GPU page faults. The
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  * allocated GPU memory regions are linked together independent of the list of
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  * kernel objects of this type.
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- *
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- * @link:   Link to this chunk in a list of chunks belonging to a
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- *          @kbase_csf_tiler_heap.
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- * @region: Pointer to the GPU memory region allocated for the chunk.
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- * @gpu_va: GPU virtual address of the start of the memory region.
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- *          This points to the header of the chunk and not to the low address
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- *          of free memory within it.
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  */
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 struct kbase_csf_tiler_heap_chunk {
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 	struct list_head link;
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 	struct kbase_va_region *region;
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+	struct kbase_vmap_struct map;
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 	u64 gpu_va;
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 };
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+
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+#define HEAP_BUF_DESCRIPTOR_CHECKED (1 << 0)
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 /**
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  * struct kbase_csf_tiler_heap - A tiler heap managed by the kernel
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  *                   associated.
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  * @link:            Link to this heap in a list of tiler heaps belonging to
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  *                   the @kbase_csf_tiler_heap_context.
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+ * @chunks_list:     Linked list of allocated chunks.
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+ * @gpu_va:          The GPU virtual address of the heap context structure that
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+ *                   was allocated for the firmware. This is also used to
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+ *                   uniquely identify the heap.
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+ * @heap_id:         Unique id representing the heap, assigned during heap
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+ *                   initialization.
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+ * @buf_desc_va:     Buffer descriptor GPU VA. Can be 0 for backward compatible
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+ *                   to earlier version base interfaces.
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+ * @buf_desc_reg:    Pointer to the VA region that covers the provided buffer
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+ *                   descriptor memory object pointed to by buf_desc_va.
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+ * @gpu_va_map:      Kernel VA mapping of the GPU VA region.
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+ * @buf_desc_map:    Kernel VA mapping of the buffer descriptor, read from
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+ *                   during the tiler heap shrinker. Sync operations may need
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+ *                   to be done before each read.
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  * @chunk_size:      Size of each chunk, in bytes. Must be page-aligned.
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  * @chunk_count:     The number of chunks currently allocated. Must not be
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  *                   zero or greater than @max_chunks.
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@@ -93,22 +118,23 @@
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  * @target_in_flight: Number of render-passes that the driver should attempt
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  *                    to keep in flight for which allocation of new chunks is
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  *                    allowed. Must not be zero.
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- * @gpu_va:          The GPU virtual address of the heap context structure that
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- *                   was allocated for the firmware. This is also used to
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- *                   uniquely identify the heap.
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- * @heap_id:         Unique id representing the heap, assigned during heap
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- *                   initialization.
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- * @chunks_list:     Linked list of allocated chunks.
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+ * @buf_desc_checked: Indicates if runtime check on buffer descriptor has been done.
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  */
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 struct kbase_csf_tiler_heap {
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 	struct kbase_context *kctx;
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 	struct list_head link;
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+	struct list_head chunks_list;
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+	u64 gpu_va;
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+	u64 heap_id;
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+	u64 buf_desc_va;
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+	struct kbase_va_region *buf_desc_reg;
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+	struct kbase_vmap_struct buf_desc_map;
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+	struct kbase_vmap_struct gpu_va_map;
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 	u32 chunk_size;
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 	u32 chunk_count;
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 	u32 max_chunks;
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 	u16 target_in_flight;
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-	u64 gpu_va;
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-	u64 heap_id;
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-	struct list_head chunks_list;
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+	bool buf_desc_checked;
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 };
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+
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 #endif /* !_KBASE_CSF_TILER_HEAP_DEF_H_ */