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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) 2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _SYS_PCI_AXQ_H
#define _SYS_PCI_AXQ_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/atomic.h>
#ifdef __cplusplus
extern "C" {
#endif
#define PIO_LIMIT_ENTER(p) { \
int n;\
for (;;) {\
do {\
n = p->pbm_pio_counter;\
} while (n <= 0);\
if (atomic_add_32_nv(\
(uint_t *)&p->pbm_pio_counter, -1)\
== (n - 1))\
break;\
atomic_add_32(\
(uint_t *)&p->pbm_pio_counter, 1);\
}\
}
#define PIO_LIMIT_EXIT(p) atomic_add_32((uint_t *)&p->pbm_pio_counter, 1);
extern void pci_axq_setup(ddi_map_req_t *mp, pbm_t *pbm_p);
extern void pci_axq_pio_limit(pbm_t *pbm_p);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_PCI_AXQ_H */
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