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NetBSD/sys/dev/ic/dp83932var.h

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/* $NetBSD: dp83932var.h,v 1.12 2009/09/01 15:20:53 tsutsui Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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_DP83932VAR_H_
#define _DEV_IC_DP83932VAR_H_
/*
* Data structure definitions for the National Semiconductor DP83932
* Systems-Oriented Network Interface Controller (SONIC).
*/
/*
* NOTE: The control data for the SONIC must not cross a 64k boundary,
* so we have to be careful about how we size things.
*
* Also, since the SONIC is only a 10Mb/s chip, and systems on which
* it is present tend to be low on memory, we try to keep the data
* structure sizes small.
*/
/*
* Transmit descriptor list size.
*/
#define SONIC_NTXDESC 32
#define SONIC_NTXDESC_MASK (SONIC_NTXDESC - 1)
#define SONIC_NEXTTX(x) (((x) + 1) & SONIC_NTXDESC_MASK)
/*
* Receive descriptor list size.
*/
#define SONIC_NRXDESC 32
#define SONIC_NRXDESC_MASK (SONIC_NRXDESC - 1)
#define SONIC_NEXTRX(x) (((x) + 1) & SONIC_NRXDESC_MASK)
#define SONIC_PREVRX(x) (((x) - 1) & SONIC_NRXDESC_MASK)
#define SONIC_RXSEQ_TO_DESC(x) ((x) & SONIC_NRXDESC_MASK)
/*
* Number of CAM entries.
*/
#define SONIC_NCAMENT 16
/*
* Control structures are DMA'd to the SONIC chip. We allocate them in
* a single clump that maps to a single DMA segment to make several things
* easier.
*/
struct sonic_control_data16 {
/*
* The transmit descriptors.
*/
struct sonic_tda16 scd_txdescs[SONIC_NTXDESC];
/*
* The receive descriptors.
*/
struct sonic_rda16 scd_rxdescs[SONIC_NRXDESC];
/*
* The receive resource descriptors.
*/
struct sonic_rra16 scd_rxbufs[SONIC_NRXDESC];
/*
* The CAM descriptors.
*/
struct sonic_cda16 scd_cam[SONIC_NCAMENT];
uint16_t scd_camenable;
};
#define SONIC_CDOFF16(x) offsetof(struct sonic_control_data16, x)
#define SONIC_CDTXOFF16(x) SONIC_CDOFF16(scd_txdescs[(x)])
#define SONIC_CDRXOFF16(x) SONIC_CDOFF16(scd_rxdescs[(x)])
#define SONIC_CDRROFF16(x) SONIC_CDOFF16(scd_rxbufs[(x)])
#define SONIC_CDCAMOFF16 SONIC_CDOFF16(scd_cam)
#define SONIC_CDCAMSIZE16 \
(sizeof(struct sonic_cda16) * SONIC_NCAMENT + sizeof(uint16_t))
struct sonic_control_data32 {
/*
* The transmit descriptors.
*/
struct sonic_tda32 scd_txdescs[SONIC_NTXDESC];
/*
* The receive descriptors.
*/
struct sonic_rda32 scd_rxdescs[SONIC_NRXDESC];
/*
* The receive resource descriptors.
*/
struct sonic_rra32 scd_rxbufs[SONIC_NRXDESC];
/*
* The CAM descriptors.
*/
struct sonic_cda32 scd_cam[SONIC_NCAMENT];
uint32_t scd_camenable;
};
#define SONIC_CDOFF32(x) offsetof(struct sonic_control_data32, x)
#define SONIC_CDTXOFF32(x) SONIC_CDOFF32(scd_txdescs[(x)])
#define SONIC_CDRXOFF32(x) SONIC_CDOFF32(scd_rxdescs[(x)])
#define SONIC_CDRROFF32(x) SONIC_CDOFF32(scd_rxbufs[(x)])
#define SONIC_CDCAMOFF32 SONIC_CDOFF32(scd_cam)
#define SONIC_CDCAMSIZE32 \
(sizeof(struct sonic_cda32) * SONIC_NCAMENT + sizeof(uint32_t))
/*
* Software state for transmit and receive descriptors.
*/
struct sonic_descsoft {
struct mbuf *ds_mbuf; /* head of mbuf chain */
bus_dmamap_t ds_dmamap; /* our DMA map */
};
/*
* Software state per device.
*/
struct sonic_softc {
device_t 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 */
int sc_32bit; /* use 32-bit mode */
int sc_bigendian; /* BMODE -> Vcc */
/* Our register map. */
bus_addr_t sc_regmap[SONIC_NREGS];
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 sonic_descsoft sc_txsoft[SONIC_NTXDESC];
struct sonic_descsoft sc_rxsoft[SONIC_NRXDESC];
/*
* Control data structures.
*/
union {
struct sonic_control_data16 *cdun_16;
struct sonic_control_data32 *cdun_32;
} sc_cdun;
#define sc_cdata16 sc_cdun.cdun_16
#define sc_cdata32 sc_cdun.cdun_32
#define sc_tda16 sc_cdun.cdun_16->scd_txdescs
#define sc_rda16 sc_cdun.cdun_16->scd_rxdescs
#define sc_rra16 sc_cdun.cdun_16->scd_rxbufs
#define sc_cda16 sc_cdun.cdun_16->scd_cam
#define sc_cdaenable16 sc_cdun.cdun_16->scd_camenable
#define sc_tda32 sc_cdun.cdun_32->scd_txdescs
#define sc_rda32 sc_cdun.cdun_32->scd_rxdescs
#define sc_rra32 sc_cdun.cdun_32->scd_rxbufs
#define sc_cda32 sc_cdun.cdun_32->scd_cam
#define sc_cdaenable32 sc_cdun.cdun_32->scd_camenable
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 */
uint16_t sc_imr; /* prototype IMR */
uint16_t sc_dcr; /* prototype DCR */
uint16_t sc_dcr2; /* prototype DCR2 */
};
#define CSR_READ(sc, reg) \
bus_space_read_2((sc)->sc_st, (sc)->sc_sh, \
(sc)->sc_regmap[(reg)])
#define CSR_WRITE(sc, reg, val) \
bus_space_write_2((sc)->sc_st, (sc)->sc_sh, \
(sc)->sc_regmap[(reg)], (val))
#define SONIC_CDTXADDR16(sc, x) \
((sc)->sc_cddma + SONIC_CDTXOFF16((x)))
#define SONIC_CDTXADDR32(sc, x) \
((sc)->sc_cddma + SONIC_CDTXOFF32((x)))
#define SONIC_CDTXADDR(sc, x) \
((sc)->sc_32bit ? SONIC_CDTXADDR32((sc), (x)) : \
SONIC_CDTXADDR16((sc), (x)))
#define SONIC_CDRXADDR16(sc, x) \
((sc)->sc_cddma + SONIC_CDRXOFF16((x)))
#define SONIC_CDRXADDR32(sc, x) \
((sc)->sc_cddma + SONIC_CDRXOFF32((x)))
#define SONIC_CDRXADDR(sc, x) \
((sc)->sc_32bit ? SONIC_CDRXADDR32((sc), (x)) : \
SONIC_CDRXADDR16((sc), (x)))
#define SONIC_CDRRADDR(sc, x) \
((sc)->sc_cddma + \
((sc)->sc_32bit ? SONIC_CDRROFF32((x)) : SONIC_CDRROFF16((x))))
#define SONIC_CDCAMADDR(sc) \
((sc)->sc_cddma + \
((sc)->sc_32bit ? SONIC_CDCAMOFF32 : SONIC_CDCAMOFF16))
#define SONIC_CDTXSYNC16(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDTXOFF16((x)), sizeof(struct sonic_tda16), (ops))
#define SONIC_CDTXSYNC32(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDTXOFF32((x)), sizeof(struct sonic_tda32), (ops))
#define SONIC_CDRXSYNC16(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDRXOFF16((x)), sizeof(struct sonic_rda16), (ops))
#define SONIC_CDRXSYNC32(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDRXOFF32((x)), sizeof(struct sonic_rda32), (ops))
#define SONIC_CDRRSYNC16(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDRROFF16((x)), sizeof(struct sonic_rra16), (ops))
#define SONIC_CDRRSYNC32(sc, x, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDRROFF32((x)), sizeof(struct sonic_rra32), (ops))
#define SONIC_CDCAMSYNC(sc, ops) \
do { \
if ((sc)->sc_32bit) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDCAMOFF32, SONIC_CDCAMSIZE32, \
(ops)); \
else \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
SONIC_CDCAMOFF16, SONIC_CDCAMSIZE16, \
(ops)); \
} while (/*CONSTCOND*/0)
#define SONIC_INIT_RXDESC(sc, x) \
do { \
struct sonic_descsoft *__ds = &(sc)->sc_rxsoft[(x)]; \
struct mbuf *__m = __ds->ds_mbuf; \
\
if ((sc)->sc_32bit) { \
/* \
* Unfortuantely, in 32-bit mode, the Rx buffer must \
* be 32-bit aligned. \
*/ \
struct sonic_rda32 *__rda = &(sc)->sc_rda32[(x)]; \
struct sonic_rda32 *__prda = \
&(sc)->sc_rda32[SONIC_PREVRX((x))]; \
struct sonic_rra32 *__rra = &(sc)->sc_rra32[(x)]; \
\
__m->m_data = __m->m_ext.ext_buf; \
\
__rra->rra_ptr1 = \
__ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \
__rra->rra_ptr0 = \
__ds->ds_dmamap->dm_segs[0].ds_addr & 0xffff; \
__rra->rra_wc1 = 0; \
__rra->rra_wc0 = (ETHER_MAX_LEN + 6) / 2; \
\
__rda->rda_link = \
(SONIC_CDRXADDR32((sc), SONIC_NEXTRX((x))) & 0xffff) |\
RDA_LINK_EOL; \
__rda->rda_inuse = 1; \
\
__prda->rda_link = SONIC_CDRXADDR32((sc), (x)); \
\
SONIC_CDRRSYNC32((sc), (x), BUS_DMASYNC_PREWRITE); \
SONIC_CDRXSYNC32((sc), (x), \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
SONIC_CDRXSYNC32((sc), SONIC_PREVRX(x), \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
} else { \
/* \
* In 16-bit mode, we scoot the packet forward 2 bytes \
* so that the payload after the Ethernet header is \
* suitably aligned. \
*/ \
struct sonic_rda16 *__rda = &(sc)->sc_rda16[(x)]; \
struct sonic_rda16 *__prda = \
&(sc)->sc_rda16[SONIC_PREVRX((x))]; \
struct sonic_rra16 *__rra = &(sc)->sc_rra16[(x)]; \
\
__m->m_data = __m->m_ext.ext_buf + 2; \
\
__rra->rra_ptr1 = \
__ds->ds_dmamap->dm_segs[0].ds_addr >> 16; \
__rra->rra_ptr0 = \
(__ds->ds_dmamap->dm_segs[0].ds_addr + 2) & 0xffff; \
__rra->rra_wc1 = 0; \
__rra->rra_wc0 = (ETHER_MAX_LEN + 2) / 2; \
\
__rda->rda_link = \
(SONIC_CDRXADDR16((sc), SONIC_NEXTRX((x))) & 0xffff) |\
RDA_LINK_EOL; \
__rda->rda_inuse = 1; \
\
__prda->rda_link = SONIC_CDRXADDR16((sc), (x)); \
\
SONIC_CDRRSYNC16((sc), (x), BUS_DMASYNC_PREWRITE); \
SONIC_CDRXSYNC16((sc), (x), \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
SONIC_CDRXSYNC16((sc), SONIC_PREVRX(x), \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
} \
} while (/*CONSTCOND*/0)
static __inline uint16_t __unused
htosonic16(struct sonic_softc *sc, uint16_t val)
{
if (sc->sc_bigendian)
return (htobe16(val));
return (htole16(val));
}
static __inline uint16_t __unused
sonic16toh(struct sonic_softc *sc, uint16_t val)
{
if (sc->sc_bigendian)
return (be16toh(val));
return (le16toh(val));
}
static __inline uint32_t __unused
htosonic32(struct sonic_softc *sc, uint32_t val)
{
if (sc->sc_bigendian)
return (htobe32(val));
return (htole32(val));
}
static __inline uint32_t __unused
sonic32toh(struct sonic_softc *sc, uint32_t val)
{
if (sc->sc_bigendian)
return (be32toh(val));
return (le32toh(val));
}
#ifdef _KERNEL
void sonic_attach(struct sonic_softc *, const uint8_t *);
int sonic_intr(void *);
#endif /* _KERNEL */
#endif /* _DEV_IC_DP83932VAR_H_ */
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