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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_XSVC_H 28 #define _SYS_XSVC_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <sys/avl.h> 35 #include <sys/types.h> 36 37 /* xsvc ioctls */ 38 #define XSVCIOC ('Q'<< 8) 39 #define XSVC_ALLOC_MEM (XSVCIOC | 130) 40 #define XSVC_FREE_MEM (XSVCIOC | 131) 41 #define XSVC_FLUSH_MEM (XSVCIOC | 132) 42 43 /* arg * struct for ioctls */ 44 typedef struct _xsvc_mem_req { 45 int xsvc_mem_reqid; /* request ID */ 46 uint64_t xsvc_mem_addr_lo; /* low DMA address range */ 47 uint64_t xsvc_mem_addr_hi; /* high DMA address range */ 48 uint64_t xsvc_mem_align; /* DMA address alignment */ 49 int xsvc_mem_sgllen; /* s/g length */ 50 size_t xsvc_mem_size; /* length of mem in bytes */ 51 void *xsvc_sg_list; /* returned scatter gather list */ 52 } xsvc_mem_req; 53 54 /* xsvc_sg_list format */ 55 typedef struct _xsvc_mloc { 56 uint64_t mloc_addr; 57 size_t mloc_size; 58 } xsvc_mloc; 59 60 #ifdef _KERNEL 61 /* *** Driver Private Below *** */ 62 63 /* arg * struct for ioctls from 32-bit app in 64-bit kernel */ 64 #pragma pack(1) 65 typedef struct _xsvc_mem_req_32 { 66 int xsvc_mem_reqid; /* request ID */ 67 uint64_t xsvc_mem_addr_lo; /* low DMA address range */ 68 uint64_t xsvc_mem_addr_hi; /* high DMA address range */ 69 uint64_t xsvc_mem_align; /* DMA address alignment */ 70 int xsvc_mem_sgllen; /* s/g length */ 71 uint32_t xsvc_mem_size; /* length of mem in bytes */ 72 uint32_t xsvc_sg_list; /* returned scatter gather list */ 73 } xsvc_mem_req_32; 74 #pragma pack() 75 76 /* xsvc_sg_list format */ 77 #pragma pack(1) 78 typedef struct _xsvc_mloc_32 { 79 uint64_t mloc_addr; 80 uint32_t mloc_size; 81 } xsvc_mloc_32; 82 #pragma pack() 83 84 /* avl node */ 85 typedef struct xsvc_mnode_s { 86 avl_node_t mn_link; 87 uint64_t mn_key; 88 struct xsvc_mem_s *mn_home; 89 } xsvc_mnode_t; 90 91 /* track memory allocs */ 92 typedef struct xsvc_mem_s { 93 xsvc_mnode_t xm_mnode; 94 size_t xm_size; 95 caddr_t xm_addr; 96 size_t xm_real_length; 97 ddi_dma_handle_t xm_dma_handle; 98 ddi_acc_handle_t xm_mem_handle; 99 ddi_dma_attr_t xm_dma_attr; 100 ddi_device_acc_attr_t xm_device_attr; 101 uint_t xm_cookie_count; 102 ddi_dma_cookie_t xm_cookie; 103 } xsvc_mem_t; 104 105 /* list of memory allocs */ 106 typedef struct xsvc_mlist_s { 107 kmutex_t ml_mutex; 108 avl_tree_t ml_avl; 109 } xsvc_mlist_t; 110 111 /* driver state */ 112 typedef struct xsvc_state_s { 113 dev_info_t *xs_dip; 114 int xs_instance; 115 116 /* 117 * track total memory allocated, mutex only covers 118 * xs_currently_alloced 119 */ 120 kmutex_t xs_mutex; 121 uint64_t xs_currently_alloced; 122 123 kmutex_t xs_cookie_mutex; 124 125 xsvc_mlist_t xs_mlist; 126 } xsvc_state_t; 127 128 #endif /* _KERNEL */ 129 130 #ifdef __cplusplus 131 } 132 #endif 133 134 #endif /* _SYS_XSVC_H */ 135