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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1999-2000 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_1394_ADAPTERS_HCI1394_BUF_H 28 #define _SYS_1394_ADAPTERS_HCI1394_BUF_H 29 30 /* 31 * hci1394_buf.h 32 * These routines handle IO bound memory. They include routines to alloc and 33 * free. IO bound memory and a routine to get the adapter's default dma 34 * attributes. 35 */ 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #include <sys/ddi.h> 42 #include <sys/modctl.h> 43 #include <sys/sunddi.h> 44 45 46 /* 47 * Input parameters into buf_alloc(). 48 * bp_length - size of buffer to alloc and map into IO space. 49 * bp_max_cookies - maximum number of cookies we can handle. 50 * bp_alignment - buffer alignment requirements. 51 * 52 * bp_max_cookies overwrites the adapter's default dma_attr_sgllen setting. 53 * bp_alignment overwrites the adapter's default dma_attr_align setting. 54 */ 55 typedef struct hci1394_buf_parms_s { 56 size_t bp_length; 57 uint_t bp_max_cookies; 58 uint64_t bp_alignment; 59 } hci1394_buf_parms_t; 60 61 /* 62 * Output from buf_alloc(). This structure contains information 63 * about the buffer allocated. 64 */ 65 typedef struct hci1394_buf_info_s { 66 ddi_dma_cookie_t bi_cookie; /* ddi_dma_addr_bind_handle */ 67 uint_t bi_cookie_count; /* ddi_dma_addr_bind_handle */ 68 caddr_t bi_kaddr; /* ddi_dma_mem_alloc */ 69 size_t bi_length; /* copy of input parms bp_length */ 70 size_t bi_real_length; /* ddi_dma_mem_alloc */ 71 ddi_acc_handle_t bi_handle; /* ddi_dma_mem_alloc */ 72 ddi_dma_handle_t bi_dma_handle; /* ddi_dma_alloc_handle */ 73 } hci1394_buf_info_t; 74 75 /* 76 * private structure to track buffer information 77 */ 78 typedef struct hci1394_buf_s { 79 ddi_acc_handle_t bu_handle; 80 ddi_dma_handle_t bu_dma_handle; 81 hci1394_drvinfo_t *bu_drvinfo; 82 } hci1394_buf_t; 83 84 /* 85 * handle passed back from alloc() and used for free() 86 */ 87 typedef struct hci1394_buf_s *hci1394_buf_handle_t; 88 89 90 void hci1394_buf_attr_get(ddi_dma_attr_t *dma_attr); 91 int hci1394_buf_alloc(hci1394_drvinfo_t *drvinfo, hci1394_buf_parms_t *parms, 92 hci1394_buf_info_t *info, hci1394_buf_handle_t *handle); 93 void hci1394_buf_free(hci1394_buf_handle_t *handle); 94 95 /* warlock directives */ 96 _NOTE(SCHEME_PROTECTS_DATA("Single user", hci1394_buf_info_s hci1394_buf_s)) 97 98 #ifdef __cplusplus 99 } 100 #endif 101 102 #endif /* _SYS_1394_ADAPTERS_HCI1394_BUF_H */ 103