isadma.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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) 2000 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _SYS_ISADMA_H
#define _SYS_ISADMA_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* definition of ebus reg spec entry:
*/
typedef struct {
uint32_t ebus_addr_hi;
uint32_t ebus_addr_low;
uint32_t ebus_size;
} ebus_regspec_t;
/*
* driver soft state structure:
*/
typedef struct {
dev_info_t *isadma_dip; /* Our dip */
ebus_regspec_t *isadma_regp; /* Our cached registers */
int32_t isadma_reglen; /* reg len */
kmutex_t isadma_access_lock; /* PIO/DMA lock */
kcondvar_t isadma_access_cv; /* cv to prevent PIO's */
dev_info_t *isadma_ldip; /* DMA lock dip */
int isadma_want; /* Want state flag */
} isadma_devstate_t;
/*
* Lower bound and upper bound of DMA address space hole. Registers
* in this hole belong to our childs devices.
*/
#define LO_BOUND DMAC2_ALLMASK
#define HI_BOUND DMA_0XCNT
#define IN_CHILD_SPACE(o) ((o) > LO_BOUND && (o) < HI_BOUND)
#define IN_16BIT_SPACE(o) ((((o) >= DMA_0ADR) && (o) <= DMA_3WCNT) || \
(((o) >= DMA_4ADR) && ((o) <= DMA_7WCNT)))
#define IS_SEQREG(o) (((o) == DMAC1_CLFF) || ((o) == DMAC2_CLFF))
#define HDL_TO_SEQREG_ADDR(h, o) \
((((o) >= DMA_0ADR) && ((o) <= DMA_3WCNT)) ? \
(h)->ahi_common.ah_addr + DMAC1_CLFF : \
(h)->ahi_common.ah_addr + DMAC2_CLFF)
#define BEGIN_ISADMA(o, v) ((o) == DMAC1_ALLMASK && (v))
#define END_ISADMA(o, v) ((o) == DMAC1_ALLMASK && (v) == 0)
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ISADMA_H */