/* SPDX-License-Identifier: MIT */
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#ifndef __NVKM_MM_H__
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#define __NVKM_MM_H__
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#include <core/os.h>
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struct nvkm_mm_node {
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struct list_head nl_entry;
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struct list_head fl_entry;
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struct nvkm_mm_node *next;
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#define NVKM_MM_HEAP_ANY 0x00
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u8 heap;
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#define NVKM_MM_TYPE_NONE 0x00
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#define NVKM_MM_TYPE_HOLE 0xff
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u8 type;
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u32 offset;
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u32 length;
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};
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struct nvkm_mm {
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struct list_head nodes;
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struct list_head free;
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u32 block_size;
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int heap_nodes;
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};
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static inline bool
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nvkm_mm_initialised(struct nvkm_mm *mm)
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{
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return mm->heap_nodes;
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}
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int nvkm_mm_init(struct nvkm_mm *, u8 heap, u32 offset, u32 length, u32 block);
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int nvkm_mm_fini(struct nvkm_mm *);
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int nvkm_mm_head(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
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u32 size_min, u32 align, struct nvkm_mm_node **);
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int nvkm_mm_tail(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
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u32 size_min, u32 align, struct nvkm_mm_node **);
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void nvkm_mm_free(struct nvkm_mm *, struct nvkm_mm_node **);
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void nvkm_mm_dump(struct nvkm_mm *, const char *);
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static inline u32
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nvkm_mm_heap_size(struct nvkm_mm *mm, u8 heap)
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{
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struct nvkm_mm_node *node;
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u32 size = 0;
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list_for_each_entry(node, &mm->nodes, nl_entry) {
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if (node->heap == heap)
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size += node->length;
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}
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return size;
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}
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static inline bool
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nvkm_mm_contiguous(struct nvkm_mm_node *node)
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{
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return !node->next;
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}
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static inline u32
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nvkm_mm_addr(struct nvkm_mm_node *node)
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{
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if (WARN_ON(!nvkm_mm_contiguous(node)))
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return 0;
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return node->offset;
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}
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static inline u32
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nvkm_mm_size(struct nvkm_mm_node *node)
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{
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u32 size = 0;
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do {
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size += node->length;
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} while ((node = node->next));
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return size;
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}
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#endif
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