1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2a439fe51SSam Ravnborg /* iommu.h: Definitions for the sun5 IOMMU. 3a439fe51SSam Ravnborg * 4a439fe51SSam Ravnborg * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net) 5a439fe51SSam Ravnborg */ 6a439fe51SSam Ravnborg #ifndef _SPARC64_IOMMU_H 7a439fe51SSam Ravnborg #define _SPARC64_IOMMU_H 8a439fe51SSam Ravnborg 9a439fe51SSam Ravnborg /* The format of an iopte in the page tables. */ 10a439fe51SSam Ravnborg #define IOPTE_VALID 0x8000000000000000UL 11a439fe51SSam Ravnborg #define IOPTE_64K 0x2000000000000000UL 12a439fe51SSam Ravnborg #define IOPTE_STBUF 0x1000000000000000UL 13a439fe51SSam Ravnborg #define IOPTE_INTRA 0x0800000000000000UL 14a439fe51SSam Ravnborg #define IOPTE_CONTEXT 0x07ff800000000000UL 15a439fe51SSam Ravnborg #define IOPTE_PAGE 0x00007fffffffe000UL 16a439fe51SSam Ravnborg #define IOPTE_CACHE 0x0000000000000010UL 17a439fe51SSam Ravnborg #define IOPTE_WRITE 0x0000000000000002UL 18a439fe51SSam Ravnborg 19a439fe51SSam Ravnborg #define IOMMU_NUM_CTXS 4096 20*0d3fdb15SChristoph Hellwig #include <asm/iommu-common.h> 21a439fe51SSam Ravnborg 22a439fe51SSam Ravnborg struct iommu_arena { 23a439fe51SSam Ravnborg unsigned long *map; 24a439fe51SSam Ravnborg unsigned int hint; 25a439fe51SSam Ravnborg unsigned int limit; 26a439fe51SSam Ravnborg }; 27a439fe51SSam Ravnborg 28f0248c15STushar Dave #define ATU_64_SPACE_SIZE 0x800000000 /* 32G */ 29f0248c15STushar Dave 30f0248c15STushar Dave /* Data structures for SPARC ATU architecture */ 31f0248c15STushar Dave struct atu_iotsb { 32f0248c15STushar Dave void *table; /* IOTSB table base virtual addr*/ 33f0248c15STushar Dave u64 ra; /* IOTSB table real addr */ 34f0248c15STushar Dave u64 dvma_size; /* ranges[3].size or OS slected 32G size */ 35f0248c15STushar Dave u64 dvma_base; /* ranges[3].base */ 36f0248c15STushar Dave u64 table_size; /* IOTSB table size */ 37f0248c15STushar Dave u64 page_size; /* IO PAGE size for IOTSB */ 38f0248c15STushar Dave u32 iotsb_num; /* tsbnum is same as iotsb_handle */ 39f0248c15STushar Dave }; 40f0248c15STushar Dave 41f0248c15STushar Dave struct atu_ranges { 42f0248c15STushar Dave u64 base; 43f0248c15STushar Dave u64 size; 44f0248c15STushar Dave }; 45f0248c15STushar Dave 46f0248c15STushar Dave struct atu { 47f0248c15STushar Dave struct atu_ranges *ranges; 48f0248c15STushar Dave struct atu_iotsb *iotsb; 4931f077dcSTushar Dave struct iommu_map_table tbl; 50f0248c15STushar Dave u64 base; 51f0248c15STushar Dave u64 size; 5231f077dcSTushar Dave u64 dma_addr_mask; 53f0248c15STushar Dave }; 54f0248c15STushar Dave 55a439fe51SSam Ravnborg struct iommu { 56bb620c3dSSowmini Varadhan struct iommu_map_table tbl; 57f0248c15STushar Dave struct atu *atu; 58a439fe51SSam Ravnborg spinlock_t lock; 59bb620c3dSSowmini Varadhan u32 dma_addr_mask; 60a439fe51SSam Ravnborg iopte_t *page_table; 61a439fe51SSam Ravnborg unsigned long iommu_control; 62a439fe51SSam Ravnborg unsigned long iommu_tsbbase; 63a439fe51SSam Ravnborg unsigned long iommu_flush; 64a439fe51SSam Ravnborg unsigned long iommu_flushinv; 65a439fe51SSam Ravnborg unsigned long iommu_tags; 66a439fe51SSam Ravnborg unsigned long iommu_ctxflush; 67a439fe51SSam Ravnborg unsigned long write_complete_reg; 68a439fe51SSam Ravnborg unsigned long dummy_page; 69a439fe51SSam Ravnborg unsigned long dummy_page_pa; 70a439fe51SSam Ravnborg unsigned long ctx_lowest_free; 71a439fe51SSam Ravnborg DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS); 72a439fe51SSam Ravnborg }; 73a439fe51SSam Ravnborg 74a439fe51SSam Ravnborg struct strbuf { 75a439fe51SSam Ravnborg int strbuf_enabled; 76a439fe51SSam Ravnborg unsigned long strbuf_control; 77a439fe51SSam Ravnborg unsigned long strbuf_pflush; 78a439fe51SSam Ravnborg unsigned long strbuf_fsync; 79d3ae4b5bSDavid S. Miller unsigned long strbuf_err_stat; 80d3ae4b5bSDavid S. Miller unsigned long strbuf_tag_diag; 81d3ae4b5bSDavid S. Miller unsigned long strbuf_line_diag; 82a439fe51SSam Ravnborg unsigned long strbuf_ctxflush; 83a439fe51SSam Ravnborg unsigned long strbuf_ctxmatch_base; 84a439fe51SSam Ravnborg unsigned long strbuf_flushflag_pa; 85a439fe51SSam Ravnborg volatile unsigned long *strbuf_flushflag; 86a439fe51SSam Ravnborg volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; 87a439fe51SSam Ravnborg }; 88a439fe51SSam Ravnborg 89f05a6865SSam Ravnborg int iommu_table_init(struct iommu *iommu, int tsbsize, 90a439fe51SSam Ravnborg u32 dma_offset, u32 dma_addr_mask, 91a439fe51SSam Ravnborg int numa_node); 92a439fe51SSam Ravnborg 93a439fe51SSam Ravnborg #endif /* !(_SPARC64_IOMMU_H) */ 94