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freebsd/sys/dev/sound/pci/csavar.h
Seigo Tanimura f259d7eed5 - Handle an interrupt for csa primarily in the bridge driver,
then invoke the children. As the value of HISR can be read
  only once, pass the HISR to the children via struct
  csa_bridgeinfo, stored in the ivars of them.
- Clear the contents of serial FIFO upon stopping the DMA for
  playing. This may eliminate buzz on playing. Experimental.
2000-01-03 02:51:16 +00:00

60 lines
2.2 KiB
C

/*-
* Copyright (c) 1999 Seigo Tanimura
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _CSA_VAR_H
#define _CSA_VAR_H
/* Resources. */
struct csa_res {
int io_rid; /* io rid */
struct resource *io; /* io */
int mem_rid; /* memory rid */
struct resource *mem; /* memory */
int irq_rid; /* irq rid */
struct resource *irq; /* irq */
};
typedef struct csa_res csa_res;
/* State of the bridge. */
struct csa_bridgeinfo {
u_int32_t hisr; /* The value of HISR on this interrupt. */
};
void csa_clearserialfifos(csa_res *resp);
/* Common functions for csa. */
int csa_readcodec(csa_res *resp, u_long offset, u_int32_t *data);
int csa_writecodec(csa_res *resp, u_long offset, u_int32_t data);
u_int32_t csa_readio(csa_res *resp, u_long offset);
void csa_writeio(csa_res *resp, u_long offset, u_int32_t data);
u_int32_t csa_readmem(csa_res *resp, u_long offset);
void csa_writemem(csa_res *resp, u_long offset, u_int32_t data);
#endif /* _CSA_VAR_H */