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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999-2000 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _SYS_1394_ADAPTERS_HCI1394_BUF_H
#define _SYS_1394_ADAPTERS_HCI1394_BUF_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* hci1394_buf.h
* These routines handle IO bound memory. They include routines to alloc and
* free. IO bound memory and a routine to get the adapter's default dma
* attributes.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/ddi.h>
#include <sys/modctl.h>
#include <sys/sunddi.h>
/*
* Input parameters into buf_alloc().
* bp_length - size of buffer to alloc and map into IO space.
* bp_max_cookies - maximum number of cookies we can handle.
* bp_alignment - buffer alignment requirements.
*
* bp_max_cookies overwrites the adapter's default dma_attr_sgllen setting.
* bp_alignment overwrites the adapter's default dma_attr_align setting.
*/
typedef struct hci1394_buf_parms_s {
size_t bp_length;
uint_t bp_max_cookies;
uint64_t bp_alignment;
} hci1394_buf_parms_t;
/*
* Output from buf_alloc(). This structure contains information
* about the buffer allocated.
*/
typedef struct hci1394_buf_info_s {
ddi_dma_cookie_t bi_cookie; /* ddi_dma_addr_bind_handle */
uint_t bi_cookie_count; /* ddi_dma_addr_bind_handle */
caddr_t bi_kaddr; /* ddi_dma_mem_alloc */
size_t bi_length; /* copy of input parms bp_length */
size_t bi_real_length; /* ddi_dma_mem_alloc */
ddi_acc_handle_t bi_handle; /* ddi_dma_mem_alloc */
ddi_dma_handle_t bi_dma_handle; /* ddi_dma_alloc_handle */
} hci1394_buf_info_t;
/*
* private structure to track buffer information
*/
typedef struct hci1394_buf_s {
ddi_acc_handle_t bu_handle;
ddi_dma_handle_t bu_dma_handle;
hci1394_drvinfo_t *bu_drvinfo;
} hci1394_buf_t;
/*
* handle passed back from alloc() and used for free()
*/
typedef struct hci1394_buf_s *hci1394_buf_handle_t;
void hci1394_buf_attr_get(ddi_dma_attr_t *dma_attr);
int hci1394_buf_alloc(hci1394_drvinfo_t *drvinfo, hci1394_buf_parms_t *parms,
hci1394_buf_info_t *info, hci1394_buf_handle_t *handle);
void hci1394_buf_free(hci1394_buf_handle_t *handle);
/* warlock directives */
_NOTE(SCHEME_PROTECTS_DATA("Single user", hci1394_buf_info_s hci1394_buf_s))
#ifdef __cplusplus
}
#endif
#endif /* _SYS_1394_ADAPTERS_HCI1394_BUF_H */
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