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