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/* $NetBSD: dbrivar.h,v 1.4 2006/03/09 20:44:18 macallan Exp $ */
/*
* Copyright (C) 1997 Rudolf Koenig (rfkoenig@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1998, 1999 Brent Baccala (baccala@freesoft.org)
* Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill@netbsd.org>
* Copyright (c) 2005 Michael Lorenz <macallan@netbsd.org>
* All rights reserved.
*
* This driver is losely based on a Linux driver written by Rudolf Koenig and
* Brent Baccala who kindly gave their permission to use their code in a
* BSD-licensed driver.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Rudolf Koenig, Brent
* Baccala, Jared D. McNeill.
* 4. Neither the name of the author nor the names of any contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*/
#ifndef DBRI_VAR_H
#define DBRI_VAR_H
#define DBRI_NUM_COMMANDS 64
#define DBRI_NUM_DESCRIPTORS 64
#define DBRI_INT_BLOCKS 64
#define DBRI_PIPE_MAX 32
enum direction {
in,
out
};
/* DBRI DMA transmit descriptor */
struct dbri_mem {
volatile uint32_t flags;
#define TX_EOF 0x80000000 /* End of frame marker */
#define TX_BCNT(x) ((x&0x3fff)<<16)
#define TX_BINT 0x00008000 /* interrupt when EOF */
#define TX_MINT 0x00004000 /* marker interrupt */
#define TX_IDLE 0x00002000 /* send idles after data */
#define TX_FCNT(x) (x&0x1fff)
volatile uint32_t ba; /* tx/rx buffer address */
volatile uint32_t nda; /* next descriptor address */
volatile uint32_t status;
#define TS_OK 0x0001 /* transmission completed */
#define TS_ABORT 0x0004 /* transmission aborted */
#define TS_UNDERRUN 0x0008 /* DMA underrun */
};
struct dbri_pipe {
uint32_t sdp; /* SDP command word */
enum direction direction;
int next; /* next pipe in linked list */
int prev; /* previous pipe in linked list */
int cycle; /* offset of timeslot (bits) */
int length; /* length of timeslot (bits) */
int desc; /* index of active descriptor */
volatile uint32_t *prec; /* pointer to received fixed data */
};
struct dbri_desc {
int busy;
caddr_t buf; /* cpu view of buffer */
caddr_t buf_dvma; /* device view */
bus_addr_t dmabase;
bus_dma_segment_t dmaseg;
bus_dmamap_t dmamap;
size_t len;
void (*callback)(void *);
void *callback_args;
};
struct dbri_dma {
volatile uint32_t command[DBRI_NUM_COMMANDS];
volatile int32_t intr[DBRI_INT_BLOCKS];
struct dbri_mem desc[DBRI_NUM_DESCRIPTORS];
bus_dmamap_t dmamap;
};
struct dbri_softc {
struct device sc_dev; /* base device */
struct sbusdev sc_sd; /* sbus device */
bus_space_handle_t sc_ioh;
bus_space_tag_t sc_iot;
bus_dma_tag_t sc_dmat;
bus_dmamap_t sc_dmamap;
bus_dma_segment_t sc_dmaseg;
int sc_have_powerctl;
int sc_powerstate;
int sc_burst; /* DVMA burst size in effect */
bus_addr_t sc_dmabase; /* VA of buffer we provide */
caddr_t sc_membase;
int sc_bufsiz; /* size of the buffer */
int sc_locked;
int sc_irqp;
int sc_waitseen;
int sc_open;
int sc_liu_state;
void (*sc_liu)(void *);
void *sc_liu_args;
struct dbri_pipe sc_pipe[DBRI_PIPE_MAX];
struct dbri_desc sc_desc[DBRI_NUM_DESCRIPTORS];
struct cs4215_state sc_mm;
int sc_latt, sc_ratt;
int sc_ctl_mode;
uint32_t sc_version;
int sc_chi_pipe_in;
int sc_chi_pipe_out;
int sc_chi_bpf;
int sc_desc_used;
struct audio_params sc_params;
struct dbri_dma *sc_dma;
};
#define dbri_dma_off(member, elem) \
((uint32_t)(unsigned long) \
(&(((struct dbri_dma *)0)->member[elem])))
#if 1
#define DBRI_CMD(cmd, intr, value) ((cmd << 28) | (intr << 27) | value)
#else
#define DBRI_CMD(cmd, intr, value) ((cmd << 28) | (1 << 27) | value)
#endif
#define DBRI_INTR_GETCHAN(v) (((v) >> 24) & 0x3f)
#define DBRI_INTR_GETCODE(v) (((v) >> 20) & 0xf)
#define DBRI_INTR_GETCMD(v) (((v) >> 16) & 0xf)
#define DBRI_INTR_GETVAL(v) ((v) & 0xffff)
#define DBRI_INTR_GETRVAL(v) ((v) & 0xfffff)
#define DBRI_SDP_MODE(v) ((v) & (7 << 13))
#define DBRI_PIPE(v) ((v) << 0)
#endif /* DBRI_VAR_H */
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