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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * hci1394_buf.h 34 * These routines handle IO bound memory. They include routines to alloc and 35 * free. IO bound memory and a routine to get the adapter's default dma 36 * attributes. 37 */ 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #include <sys/ddi.h> 44 #include <sys/modctl.h> 45 #include <sys/sunddi.h> 46 47 48 /* 49 * Input parameters into buf_alloc(). 50 * bp_length - size of buffer to alloc and map into IO space. 51 * bp_max_cookies - maximum number of cookies we can handle. 52 * bp_alignment - buffer alignment requirements. 53 * 54 * bp_max_cookies overwrites the adapter's default dma_attr_sgllen setting. 55 * bp_alignment overwrites the adapter's default dma_attr_align setting. 56 */ 57 typedef struct hci1394_buf_parms_s { 58 size_t bp_length; 59 uint_t bp_max_cookies; 60 uint64_t bp_alignment; 61 } hci1394_buf_parms_t; 62 63 /* 64 * Output from buf_alloc(). This structure contains information 65 * about the buffer allocated. 66 */ 67 typedef struct hci1394_buf_info_s { 68 ddi_dma_cookie_t bi_cookie; /* ddi_dma_addr_bind_handle */ 69 uint_t bi_cookie_count; /* ddi_dma_addr_bind_handle */ 70 caddr_t bi_kaddr; /* ddi_dma_mem_alloc */ 71 size_t bi_length; /* copy of input parms bp_length */ 72 size_t bi_real_length; /* ddi_dma_mem_alloc */ 73 ddi_acc_handle_t bi_handle; /* ddi_dma_mem_alloc */ 74 ddi_dma_handle_t bi_dma_handle; /* ddi_dma_alloc_handle */ 75 } hci1394_buf_info_t; 76 77 /* 78 * private structure to track buffer information 79 */ 80 typedef struct hci1394_buf_s { 81 ddi_acc_handle_t bu_handle; 82 ddi_dma_handle_t bu_dma_handle; 83 hci1394_drvinfo_t *bu_drvinfo; 84 } hci1394_buf_t; 85 86 /* 87 * handle passed back from alloc() and used for free() 88 */ 89 typedef struct hci1394_buf_s *hci1394_buf_handle_t; 90 91 92 void hci1394_buf_attr_get(ddi_dma_attr_t *dma_attr); 93 int hci1394_buf_alloc(hci1394_drvinfo_t *drvinfo, hci1394_buf_parms_t *parms, 94 hci1394_buf_info_t *info, hci1394_buf_handle_t *handle); 95 void hci1394_buf_free(hci1394_buf_handle_t *handle); 96 97 /* warlock directives */ 98 _NOTE(SCHEME_PROTECTS_DATA("Single user", hci1394_buf_info_s hci1394_buf_s)) 99 100 #ifdef __cplusplus 101 } 102 #endif 103 104 #endif /* _SYS_1394_ADAPTERS_HCI1394_BUF_H */ 105