NetBSD/sys/dev/ic/hd64570var.h

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/* $NetBSD: hd64570var.h,v 1.2 1998/10/28 16:26:01 kleink Exp $ */
/*
* Copyright (c) 1998 Vixie Enterprises
* 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.
* 3. Neither the name of Vixie Enterprises nor the names
* of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY VIXIE ENTERPRISES 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 VIXIE ENTERPRISES 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.
*
* This software has been written for Vixie Enterprises by Michael Graff
* <explorer@flame.org>. To learn more about Vixie Enterprises, see
* ``http://www.vix.com''.
*/
#ifndef _DEV_IC_HD64570VAR_H_
#define _DEV_IC_HD64570VAR_H_
#include "bpfilter.h"
#define SCA_USE_FASTQ /* use a split queue, one for fast traffic */
struct sca_softc;
typedef struct sca_port sca_port_t;
typedef struct sca_desc sca_desc_t;
/*
* device DMA descriptor
*/
struct sca_desc {
u_int16_t cp; /* chain pointer */
u_int16_t bp; /* buffer pointer (low bits) */
u_int8_t bpb; /* buffer pointer (high bits) */
u_int8_t unused0;
u_int16_t len; /* total length */
u_int8_t stat; /* status */
u_int8_t unused1;
};
#define SCA_DESC_EOT 0x01
#define SCA_DESC_CRC 0x04
#define SCA_DESC_OVRN 0x08
#define SCA_DESC_RESD 0x10
#define SCA_DESC_ABORT 0x20
#define SCA_DESC_SHRTFRM 0x40
#define SCA_DESC_EOM 0x80
#define SCA_DESC_ERRORS 0x7C
/*
* softc structure for each port
*/
struct sca_port {
u_int msci_off; /* offset for msci address for this port */
u_int dmac_off; /* offset of dmac address for this port */
u_int sp_port;
/*
* CISCO keepalive stuff
*/
u_int32_t cka_lasttx;
u_int32_t cka_lastrx;
/*
* start of each important bit of information for transmit and
* receive buffers.
*/
u_int32_t txdesc_p;
sca_desc_t *txdesc;
u_int32_t txbuf_p;
u_int8_t *txbuf;
volatile u_int txcur; /* last descriptor in chain */
volatile u_int txinuse; /* descriptors in use */
volatile u_int txstart; /* start descriptor */
u_int32_t rxdesc_p;
sca_desc_t *rxdesc;
u_int32_t rxbuf_p;
u_int8_t *rxbuf;
u_int rxstart; /* index of first descriptor */
u_int rxend; /* index of last descriptor */
struct ifnet sp_if; /* the network information */
struct ifqueue linkq; /* link-level packets are high prio */
#ifdef SCA_USE_FASTQ
struct ifqueue fastq; /* interactive packets */
#endif
#if NBPFILTER > 0
caddr_t sp_bpf; /* hook for BPF */
#endif
struct sca_softc *sca; /* pointer to parent */
};
/*
* softc structure for the chip itself
*/
struct sca_softc {
struct device *parent; /* our parent device, or NULL */
int sc_numports; /* number of ports present */
/*
* a callback into the parent, since the SCA chip has no control
* over DTR, we have to make a callback into the parent, which
* might know about DTR.
*
* If the function pointer is NULL, no callback is specified.
*/
void (*dtr_callback) __P((void *aux, int port, int state));
void *dtr_aux;
sca_port_t sc_ports[2];
bus_space_handle_t sc_ioh;
bus_space_tag_t sc_iot;
bus_dma_tag_t sc_dmat; /* bus dma tag */
bus_dmamap_t sc_dmam; /* bus dma map */
bus_dma_segment_t sc_seg; /* bus dma segment allocated */
caddr_t sc_dma_addr; /* kva address of segment */
u_long sc_allocsize; /* size of region */
};
int sca_init(struct sca_softc *, u_int);
void sca_port_attach(struct sca_softc *, u_int);
int sca_hardintr(struct sca_softc *);
void sca_shutdown(struct sca_softc *);
#endif /* _DEV_IC_HD64570VAR_H_ */