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/* $OpenBSD: smc83c170var.h,v 1.2 2008/06/26 05:42:16 ray Exp $ */
/* $NetBSD: smc83c170var.h,v 1.9 2005/02/04 02:10:37 perry 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.
*
* 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/timeout.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 arpcom sc_arpcom; /* ethernet common data */
void *sc_sdhook; /* shutdown hook */
int sc_hwflags; /* info about board */
#define EPIC_HAS_BNC 0x01 /* BNC on serial interface */
#define EPIC_HAS_MII_FIBER 0x02 /* fiber on MII lxtphy */
#define EPIC_DUPLEXLED_ON_694 0x04 /* duplex LED by software */
struct mii_data sc_mii; /* MII/media information */
struct timeout sc_mii_timeout; /* MII timeout */
bus_dmamap_t sc_cddmamap; /* control data DMA map */
#define sc_cddma sc_cddmamap->dm_segs[0].ds_addr
bus_dmamap_t sc_nulldmamap; /* DMA map for the pad buffer */
#define sc_nulldma sc_nulldmamap->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 */
u_int sc_serinst; /* ifmedia instance for serial mode */
};
#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_control = RXCTL_BUFLENGTH(__m->m_ext.ext_size - 2); \
__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 (/* CONSTCOND */ 0)
#ifdef _KERNEL
void epic_attach(struct epic_softc *, const char *);
int epic_intr(void *);
#endif /* _KERNEL */
#endif /* _DEV_IC_SMC83C170VAR_H_ */
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