1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_PX_MMU_H 27 #define _SYS_PX_MMU_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <sys/vmem.h> 36 37 typedef uint64_t px_dvma_addr_t; 38 typedef uint64_t px_dma_bypass_addr_t; 39 typedef uint64_t px_dma_peer_addr_t; 40 typedef uint16_t px_dvma_context_t; 41 typedef uint64_t px_window_t; 42 43 /* 44 * boiler plate for tte (everything except the pfn) 45 */ 46 #define PX_GET_TTE_ATTR(flags)\ 47 (((flags & DDI_DMA_READ) ? PCI_MAP_ATTR_WRITE : 0) | \ 48 ((flags & DDI_DMA_WRITE) ? PCI_MAP_ATTR_READ : 0)) 49 50 /* 51 * mmu block soft state structure: 52 * 53 * Each px node may share an mmu block structure with its peer 54 * node of have its own private mmu block structure. 55 */ 56 typedef struct px_mmu { 57 px_t *mmu_px_p; /* link back to px soft state */ 58 int mmu_inst; 59 60 /* 61 * address ranges of dvma space: 62 */ 63 px_dvma_addr_t mmu_dvma_base; 64 px_dvma_addr_t mmu_dvma_end; 65 px_dvma_addr_t mmu_dvma_fast_end; 66 px_dvma_addr_t dvma_base_pg; /* = MMU_BTOP(mmu_dvma_base) */ 67 px_dvma_addr_t dvma_end_pg; /* = MMU_BTOP(mmu_dvma_end) */ 68 69 /* 70 * virtual memory map and callback id for dvma space: 71 */ 72 vmem_t *mmu_dvma_map; 73 uintptr_t mmu_dvma_clid; 74 75 /* 76 * fields for fast dvma interfaces: 77 */ 78 ulong_t mmu_dvma_reserve; 79 80 /* 81 * dvma fast track page cache byte map 82 */ 83 uint8_t *mmu_dvma_cache_locks; 84 uint_t mmu_dvma_addr_scan_start; 85 86 /* dvma debug */ 87 kmutex_t dvma_debug_lock; 88 uint32_t dvma_alloc_rec_index; 89 uint32_t dvma_free_rec_index; 90 uint32_t dvma_active_count; 91 92 struct px_dvma_rec *dvma_alloc_rec; 93 struct px_dvma_rec *dvma_free_rec; 94 struct px_dvma_rec *dvma_active_list; 95 } px_mmu_t; 96 97 typedef struct px_dvma_range_prop { 98 uint32_t dvma_base; 99 uint32_t dvma_len; 100 } px_dvma_range_prop_t; 101 102 #define MMU_PAGE_INDEX(mmu_p, dvma_pg) ((dvma_pg) - (mmu_p)->dvma_base_pg) 103 104 /* dvma debug */ 105 #define PX_DVMA_DBG_ON(mmu_p) \ 106 ((1ull << (mmu_p)->mmu_inst) & px_dvma_debug_on) 107 #define PX_DVMA_DBG_OFF(mmu_p) \ 108 ((1ull << (mmu_p)->mmu_inst) & px_dvma_debug_off) 109 110 extern void px_dvma_debug_fini(px_mmu_t *mmu_p); 111 extern void px_dvma_alloc_debug(px_mmu_t *mmu_p, char *address, uint_t len, 112 ddi_dma_impl_t *mp); 113 extern void px_dvma_free_debug(px_mmu_t *mmu_p, char *address, uint_t len, 114 ddi_dma_impl_t *mp); 115 116 /* DVMA routines */ 117 extern int px_mmu_map_pages(px_mmu_t *mmu_p, ddi_dma_impl_t *mp, 118 px_dvma_addr_t dvma_pg, size_t npages, size_t pfn_index); 119 extern int px_mmu_map_window(px_mmu_t *mmu_p, ddi_dma_impl_t *mp, 120 px_window_t window); 121 extern void px_mmu_unmap_pages(px_mmu_t *mmu_p, ddi_dma_impl_t *mp, 122 px_dvma_addr_t dvma_pg, uint_t npages); 123 extern void px_mmu_unmap_window(px_mmu_t *mmu_p, ddi_dma_impl_t *mp); 124 125 /* MMU initialization routines */ 126 extern int px_mmu_attach(px_t *px_p); 127 extern void px_mmu_detach(px_t *px_p); 128 129 #ifdef __cplusplus 130 } 131 #endif 132 133 #endif /* _SYS_PX_MMU_H */ 134