219 lines
7.4 KiB
C
219 lines
7.4 KiB
C
/* $NetBSD: if_admswvar.h,v 1.5 2012/10/27 17:18:01 chs Exp $ */
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/*-
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* Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*/
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#ifndef _IF_ADMSWVAR_H_
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#define _IF_ADMSWVAR_H_
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_admswvar.h,v 1.5 2012/10/27 17:18:01 chs Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/intr.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/wdog.h>
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#include <uvm/uvm_extern.h> /* for PAGE_SIZE */
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <mips/adm5120/include/adm5120reg.h>
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#include <mips/adm5120/include/adm5120var.h>
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#include <mips/adm5120/include/adm5120_obiovar.h>
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#include <mips/adm5120/dev/if_admswreg.h>
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#define ADMSW_EVENT_COUNTERS
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#define MAC_BUFLEN 0x07ff
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#define ADMSW_NTXHDESC 4
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#define ADMSW_NRXHDESC 32
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#define ADMSW_NTXLDESC 32
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#define ADMSW_NRXLDESC 32
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#define ADMSW_NTXHDESC_MASK (ADMSW_NTXHDESC - 1)
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#define ADMSW_NRXHDESC_MASK (ADMSW_NRXHDESC - 1)
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#define ADMSW_NTXLDESC_MASK (ADMSW_NTXLDESC - 1)
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#define ADMSW_NRXLDESC_MASK (ADMSW_NRXLDESC - 1)
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#define ADMSW_NEXTTXH(x) (((x) + 1) & ADMSW_NTXHDESC_MASK)
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#define ADMSW_NEXTRXH(x) (((x) + 1) & ADMSW_NRXHDESC_MASK)
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#define ADMSW_NEXTTXL(x) (((x) + 1) & ADMSW_NTXLDESC_MASK)
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#define ADMSW_NEXTRXL(x) (((x) + 1) & ADMSW_NRXLDESC_MASK)
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struct admsw_control_data {
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/* The transmit descriptors. */
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struct admsw_desc acd_txhdescs[ADMSW_NTXHDESC];
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/* The receive descriptors. */
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struct admsw_desc acd_rxhdescs[ADMSW_NRXHDESC];
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/* The transmit descriptors. */
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struct admsw_desc acd_txldescs[ADMSW_NTXLDESC];
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/* The receive descriptors. */
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struct admsw_desc acd_rxldescs[ADMSW_NRXLDESC];
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};
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#define ADMSW_CDOFF(x) offsetof(struct admsw_control_data, x)
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#define ADMSW_CDTXHOFF(x) ADMSW_CDOFF(acd_txhdescs[(x)])
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#define ADMSW_CDTXLOFF(x) ADMSW_CDOFF(acd_txldescs[(x)])
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#define ADMSW_CDRXHOFF(x) ADMSW_CDOFF(acd_rxhdescs[(x)])
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#define ADMSW_CDRXLOFF(x) ADMSW_CDOFF(acd_rxldescs[(x)])
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struct admsw_descsoft {
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struct mbuf *ds_mbuf;
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bus_dmamap_t ds_dmamap;
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};
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/*
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* Software state per device.
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*/
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struct admsw_softc {
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device_t sc_dev; /* generic device information */
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uint8_t sc_enaddr[ETHER_ADDR_LEN];
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bus_dma_tag_t sc_dmat; /* bus DMA tag */
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bus_space_tag_t sc_st; /* bus space tag */
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bus_space_handle_t sc_ioh; /* MAC space handle */
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struct sysmon_wdog sc_smw;
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struct ifmedia sc_ifmedia[SW_DEVS];
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int ndevs; /* number of IFF_RUNNING interfaces */
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struct ethercom sc_ethercom[SW_DEVS]; /* Ethernet common data */
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void *sc_sdhook; /* shutdown hook */
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void *sc_ih; /* interrupt cookie */
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struct admsw_descsoft sc_txhsoft[ADMSW_NTXHDESC];
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struct admsw_descsoft sc_rxhsoft[ADMSW_NRXHDESC];
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struct admsw_descsoft sc_txlsoft[ADMSW_NTXLDESC];
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struct admsw_descsoft sc_rxlsoft[ADMSW_NRXLDESC];
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bus_dmamap_t sc_cddmamap; /* control data DMA map */
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#define sc_cddma sc_cddmamap->dm_segs[0].ds_addr
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struct admsw_control_data *sc_control_data;
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#define sc_txhdescs sc_control_data->acd_txhdescs
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#define sc_rxhdescs sc_control_data->acd_rxhdescs
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#define sc_txldescs sc_control_data->acd_txldescs
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#define sc_rxldescs sc_control_data->acd_rxldescs
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int sc_txfree; /* number of free Tx descriptors */
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int sc_txnext; /* next Tx descriptor to use */
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int sc_txdirty; /* first dirty Tx descriptor */
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int sc_rxptr; /* next ready Rx descriptor */
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#ifdef ADMSW_EVENT_COUNTERS
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struct evcnt sc_ev_txstall; /* Tx stalled */
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struct evcnt sc_ev_rxstall; /* Rx stalled */
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struct evcnt sc_ev_txintr; /* Tx interrupts */
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struct evcnt sc_ev_rxintr; /* Rx interrupts */
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#if 1
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struct evcnt sc_ev_rxsync; /* Rx syncs */
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#endif
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#endif
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};
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#define ADMSW_CDTXHADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDTXHOFF((x)))
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#define ADMSW_CDTXLADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDTXLOFF((x)))
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#define ADMSW_CDRXHADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDRXHOFF((x)))
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#define ADMSW_CDRXLADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDRXLOFF((x)))
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#define ADMSW_CDTXHSYNC(sc, x, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
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ADMSW_CDTXHOFF((x)), sizeof(struct admsw_desc), (ops))
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#define ADMSW_CDTXLSYNC(sc, x, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
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ADMSW_CDTXLOFF((x)), sizeof(struct admsw_desc), (ops))
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#define ADMSW_CDRXHSYNC(sc, x, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
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ADMSW_CDRXHOFF((x)), sizeof(struct admsw_desc), (ops))
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#define ADMSW_CDRXLSYNC(sc, x, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \
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ADMSW_CDRXLOFF((x)), sizeof(struct admsw_desc), (ops))
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#define ADMSW_INIT_RXHDESC(sc, x) \
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do { \
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struct admsw_descsoft *__ds = &(sc)->sc_rxhsoft[(x)]; \
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struct admsw_desc *__desc = &(sc)->sc_rxhdescs[(x)]; \
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struct mbuf *__m = __ds->ds_mbuf; \
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\
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__m->m_data = __m->m_ext.ext_buf + 2; \
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__desc->data = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \
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__desc->cntl = 0; \
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__desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2); \
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__desc->status = 0; \
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if ((x) == ADMSW_NRXHDESC - 1) \
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__desc->data |= ADM5120_DMA_RINGEND; \
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__desc->data |= ADM5120_DMA_OWN; \
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ADMSW_CDRXHSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
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} while (0)
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#define ADMSW_INIT_RXLDESC(sc, x) \
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do { \
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struct admsw_descsoft *__ds = &(sc)->sc_rxlsoft[(x)]; \
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struct admsw_desc *__desc = &(sc)->sc_rxldescs[(x)]; \
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struct mbuf *__m = __ds->ds_mbuf; \
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\
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__m->m_data = __m->m_ext.ext_buf + 2; \
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__desc->data = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \
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__desc->cntl = 0; \
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__desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2); \
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__desc->status = 0; \
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if ((x) == ADMSW_NRXLDESC - 1) \
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__desc->data |= ADM5120_DMA_RINGEND; \
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__desc->data |= ADM5120_DMA_OWN; \
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ADMSW_CDRXLSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
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} while (0)
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void admwdog_attach(struct admsw_softc *);
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#endif /* _IF_ADMSWVAR_H_ */
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