183 lines
6.2 KiB
C
183 lines
6.2 KiB
C
/* $NetBSD: smc83c170var.h,v 1.4 2000/03/23 07:01:32 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
|
* NASA Ames Research Center.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _DEV_IC_SMC83C170VAR_H_
|
|
#define _DEV_IC_SMC83C170VAR_H_
|
|
|
|
#include <sys/callout.h>
|
|
|
|
/*
|
|
* Misc. definitions for the Standard Microsystems Corp. 83C170
|
|
* Ethernet PCI Integrated Controller (EPIC/100) driver.
|
|
*/
|
|
|
|
/*
|
|
* Transmit descriptor list size.
|
|
*/
|
|
#define EPIC_NTXDESC 128
|
|
#define EPIC_NTXDESC_MASK (EPIC_NTXDESC - 1)
|
|
#define EPIC_NEXTTX(x) ((x + 1) & EPIC_NTXDESC_MASK)
|
|
|
|
/*
|
|
* Receive descriptor list size.
|
|
*/
|
|
#define EPIC_NRXDESC 64
|
|
#define EPIC_NRXDESC_MASK (EPIC_NRXDESC - 1)
|
|
#define EPIC_NEXTRX(x) ((x + 1) & EPIC_NRXDESC_MASK)
|
|
|
|
/*
|
|
* Control structures are DMA'd to the EPIC chip. We allocate them in
|
|
* a single clump that maps to a single DMA segment to make several things
|
|
* easier.
|
|
*/
|
|
struct epic_control_data {
|
|
/*
|
|
* The transmit descriptors.
|
|
*/
|
|
struct epic_txdesc ecd_txdescs[EPIC_NTXDESC];
|
|
|
|
/*
|
|
* The receive descriptors.
|
|
*/
|
|
struct epic_rxdesc ecd_rxdescs[EPIC_NRXDESC];
|
|
|
|
/*
|
|
* The transmit fraglists.
|
|
*/
|
|
struct epic_fraglist ecd_txfrags[EPIC_NTXDESC];
|
|
};
|
|
|
|
#define EPIC_CDOFF(x) offsetof(struct epic_control_data, x)
|
|
#define EPIC_CDTXOFF(x) EPIC_CDOFF(ecd_txdescs[(x)])
|
|
#define EPIC_CDRXOFF(x) EPIC_CDOFF(ecd_rxdescs[(x)])
|
|
#define EPIC_CDFLOFF(x) EPIC_CDOFF(ecd_txfrags[(x)])
|
|
|
|
/*
|
|
* Software state for transmit and receive desciptors.
|
|
*/
|
|
struct epic_descsoft {
|
|
struct mbuf *ds_mbuf; /* head of mbuf chain */
|
|
bus_dmamap_t ds_dmamap; /* our DMA map */
|
|
};
|
|
|
|
/*
|
|
* Software state per device.
|
|
*/
|
|
struct epic_softc {
|
|
struct device sc_dev; /* generic device information */
|
|
bus_space_tag_t sc_st; /* bus space tag */
|
|
bus_space_handle_t sc_sh; /* bus space handle */
|
|
bus_dma_tag_t sc_dmat; /* bus DMA tag */
|
|
struct ethercom sc_ethercom; /* ethernet common data */
|
|
void *sc_sdhook; /* shutdown hook */
|
|
|
|
struct mii_data sc_mii; /* MII/media information */
|
|
struct callout sc_mii_callout; /* MII callout */
|
|
|
|
bus_dmamap_t sc_cddmamap; /* control data DMA map */
|
|
#define sc_cddma sc_cddmamap->dm_segs[0].ds_addr
|
|
|
|
/*
|
|
* Software state for transmit and receive descriptors.
|
|
*/
|
|
struct epic_descsoft sc_txsoft[EPIC_NTXDESC];
|
|
struct epic_descsoft sc_rxsoft[EPIC_NRXDESC];
|
|
|
|
/*
|
|
* Control data structures.
|
|
*/
|
|
struct epic_control_data *sc_control_data;
|
|
|
|
int sc_txpending; /* number of TX requests pending */
|
|
int sc_txdirty; /* first dirty TX descriptor */
|
|
int sc_txlast; /* last used TX descriptor */
|
|
|
|
int sc_rxptr; /* next ready RX descriptor */
|
|
};
|
|
|
|
#define EPIC_CDTXADDR(sc, x) ((sc)->sc_cddma + EPIC_CDTXOFF((x)))
|
|
#define EPIC_CDRXADDR(sc, x) ((sc)->sc_cddma + EPIC_CDRXOFF((x)))
|
|
#define EPIC_CDFLADDR(sc, x) ((sc)->sc_cddma + EPIC_CDFLOFF((x)))
|
|
|
|
#define EPIC_CDTX(sc, x) (&(sc)->sc_control_data->ecd_txdescs[(x)])
|
|
#define EPIC_CDRX(sc, x) (&(sc)->sc_control_data->ecd_rxdescs[(x)])
|
|
#define EPIC_CDFL(sc, x) (&(sc)->sc_control_data->ecd_txfrags[(x)])
|
|
|
|
#define EPIC_DSTX(sc, x) (&(sc)->sc_txsoft[(x)])
|
|
#define EPIC_DSRX(sc, x) (&(sc)->sc_rxsoft[(x)])
|
|
|
|
#define EPIC_CDTXSYNC(sc, x, ops) \
|
|
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
|
|
EPIC_CDTXOFF((x)), sizeof(struct epic_txdesc), (ops))
|
|
|
|
#define EPIC_CDRXSYNC(sc, x, ops) \
|
|
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
|
|
EPIC_CDRXOFF((x)), sizeof(struct epic_rxdesc), (ops))
|
|
|
|
#define EPIC_CDFLSYNC(sc, x, ops) \
|
|
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
|
|
EPIC_CDFLOFF((x)), sizeof(struct epic_fraglist), (ops))
|
|
|
|
#define EPIC_INIT_RXDESC(sc, x) \
|
|
do { \
|
|
struct epic_descsoft *__ds = EPIC_DSRX((sc), (x)); \
|
|
struct epic_rxdesc *__rxd = EPIC_CDRX((sc), (x)); \
|
|
struct mbuf *__m = __ds->ds_mbuf; \
|
|
\
|
|
/* \
|
|
* Note we scoot the packet forward 2 bytes in the buffer \
|
|
* so that the payload after the Ethernet header is aligned \
|
|
* to a 4 byte boundary. \
|
|
*/ \
|
|
__m->m_data = __m->m_ext.ext_buf + 2; \
|
|
__rxd->er_bufaddr = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \
|
|
__rxd->er_buflength = __m->m_ext.ext_size - 2; \
|
|
__rxd->er_control = 0; \
|
|
__rxd->er_rxstatus = ER_RXSTAT_OWNER; \
|
|
__rxd->er_nextdesc = EPIC_CDRXADDR((sc), EPIC_NEXTRX((x))); \
|
|
EPIC_CDRXSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
|
|
} while (0)
|
|
|
|
#ifdef _KERNEL
|
|
void epic_attach __P((struct epic_softc *));
|
|
int epic_intr __P((void *));
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _DEV_IC_SMC83C170VAR_H_ */
|