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- /* SPDX-License-Identifier: GPL-2.0 */
- /* iommu.h: Definitions for the sun5 IOMMU.
- *
- * Copyright (C) 1996, 1999, 2007 David S. Miller ([email protected])
- */
- #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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