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:
/
usr
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src
/
linux-headers-6.8.0-83-generic
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arch
/
sparc
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include
/
asm
/ [
drwxr-xr-x
]
upload
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iommu_64.h
/* SPDX-License-Identifier: GPL-2.0 */ /* iommu.h: Definitions for the sun5 IOMMU. * * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net) */ #ifndef _SPARC64_IOMMU_H #define _SPARC64_IOMMU_H /* The format of an iopte in the page tables. */ #define IOPTE_VALID 0x8000000000000000UL #define IOPTE_64K 0x2000000000000000UL #define IOPTE_STBUF 0x1000000000000000UL #define IOPTE_INTRA 0x0800000000000000UL #define IOPTE_CONTEXT 0x07ff800000000000UL #define IOPTE_PAGE 0x00007fffffffe000UL #define IOPTE_CACHE 0x0000000000000010UL #define IOPTE_WRITE 0x0000000000000002UL #define IOMMU_NUM_CTXS 4096 #include <asm/iommu-common.h> struct iommu_arena { unsigned long *map; unsigned int hint; unsigned int limit; }; #define ATU_64_SPACE_SIZE 0x800000000 /* 32G */ /* Data structures for SPARC ATU architecture */ struct atu_iotsb { void *table; /* IOTSB table base virtual addr*/ u64 ra; /* IOTSB table real addr */ u64 dvma_size; /* ranges[3].size or OS slected 32G size */ u64 dvma_base; /* ranges[3].base */ u64 table_size; /* IOTSB table size */ u64 page_size; /* IO PAGE size for IOTSB */ u32 iotsb_num; /* tsbnum is same as iotsb_handle */ }; struct atu_ranges { u64 base; u64 size; }; struct atu { struct atu_ranges *ranges; struct atu_iotsb *iotsb; struct iommu_map_table tbl; u64 base; u64 size; u64 dma_addr_mask; }; struct iommu { struct iommu_map_table tbl; struct atu *atu; spinlock_t lock; u32 dma_addr_mask; iopte_t *page_table; unsigned long iommu_control; unsigned long iommu_tsbbase; unsigned long iommu_flush; unsigned long iommu_flushinv; unsigned long iommu_tags; unsigned long iommu_ctxflush; unsigned long write_complete_reg; unsigned long dummy_page; unsigned long dummy_page_pa; unsigned long ctx_lowest_free; DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS); }; struct strbuf { int strbuf_enabled; unsigned long strbuf_control; unsigned long strbuf_pflush; unsigned long strbuf_fsync; unsigned long strbuf_err_stat; unsigned long strbuf_tag_diag; unsigned long strbuf_line_diag; unsigned long strbuf_ctxflush; unsigned long strbuf_ctxmatch_base; unsigned long strbuf_flushflag_pa; volatile unsigned long *strbuf_flushflag; volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; }; int iommu_table_init(struct iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask, int numa_node); #endif /* !(_SPARC64_IOMMU_H) */
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