1 /* $NetBSD: smc83c170var.h,v 1.14 2009/09/03 14:13:16 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _DEV_IC_SMC83C170VAR_H_ 34 #define _DEV_IC_SMC83C170VAR_H_ 35 36 #include <sys/callout.h> 37 38 /* 39 * Misc. definitions for the Standard Microsystems Corp. 83C170 40 * Ethernet PCI Integrated Controller (EPIC/100) driver. 41 */ 42 43 /* 44 * Transmit descriptor list size. 45 */ 46 #define EPIC_NTXDESC 128 47 #define EPIC_NTXDESC_MASK (EPIC_NTXDESC - 1) 48 #define EPIC_NEXTTX(x) ((x + 1) & EPIC_NTXDESC_MASK) 49 50 /* 51 * Receive descriptor list size. 52 */ 53 #define EPIC_NRXDESC 64 54 #define EPIC_NRXDESC_MASK (EPIC_NRXDESC - 1) 55 #define EPIC_NEXTRX(x) ((x + 1) & EPIC_NRXDESC_MASK) 56 57 /* 58 * Control structures are DMA'd to the EPIC chip. We allocate them in 59 * a single clump that maps to a single DMA segment to make several things 60 * easier. 61 */ 62 struct epic_control_data { 63 /* 64 * The transmit descriptors. 65 */ 66 struct epic_txdesc ecd_txdescs[EPIC_NTXDESC]; 67 68 /* 69 * The receive descriptors. 70 */ 71 struct epic_rxdesc ecd_rxdescs[EPIC_NRXDESC]; 72 73 /* 74 * The transmit fraglists. 75 */ 76 struct epic_fraglist ecd_txfrags[EPIC_NTXDESC]; 77 }; 78 79 #define EPIC_CDOFF(x) offsetof(struct epic_control_data, x) 80 #define EPIC_CDTXOFF(x) EPIC_CDOFF(ecd_txdescs[(x)]) 81 #define EPIC_CDRXOFF(x) EPIC_CDOFF(ecd_rxdescs[(x)]) 82 #define EPIC_CDFLOFF(x) EPIC_CDOFF(ecd_txfrags[(x)]) 83 84 /* 85 * Software state for transmit and receive desciptors. 86 */ 87 struct epic_descsoft { 88 struct mbuf *ds_mbuf; /* head of mbuf chain */ 89 bus_dmamap_t ds_dmamap; /* our DMA map */ 90 }; 91 92 /* 93 * Software state per device. 94 */ 95 struct epic_softc { 96 device_t sc_dev; /* generic device information */ 97 bus_space_tag_t sc_st; /* bus space tag */ 98 bus_space_handle_t sc_sh; /* bus space handle */ 99 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 100 struct ethercom sc_ethercom; /* ethernet common data */ 101 102 int sc_hwflags; /* info about board */ 103 #define EPIC_HAS_BNC 0x01 /* BNC on serial interface */ 104 #define EPIC_HAS_MII_FIBER 0x02 /* fiber on MII lxtphy */ 105 #define EPIC_DUPLEXLED_ON_694 0x04 /* duplex LED by software */ 106 107 struct mii_data sc_mii; /* MII/media information */ 108 struct callout sc_mii_callout; /* MII callout */ 109 110 bus_dmamap_t sc_cddmamap; /* control data DMA map */ 111 #define sc_cddma sc_cddmamap->dm_segs[0].ds_addr 112 bus_dmamap_t sc_nulldmamap; /* DMA map for the pad buffer */ 113 #define sc_nulldma sc_nulldmamap->dm_segs[0].ds_addr 114 115 /* 116 * Software state for transmit and receive descriptors. 117 */ 118 struct epic_descsoft sc_txsoft[EPIC_NTXDESC]; 119 struct epic_descsoft sc_rxsoft[EPIC_NRXDESC]; 120 121 /* 122 * Control data structures. 123 */ 124 struct epic_control_data *sc_control_data; 125 126 int sc_txpending; /* number of TX requests pending */ 127 int sc_txdirty; /* first dirty TX descriptor */ 128 int sc_txlast; /* last used TX descriptor */ 129 130 int sc_rxptr; /* next ready RX descriptor */ 131 132 u_int sc_serinst; /* ifmedia instance for serial mode */ 133 }; 134 135 #define EPIC_CDTXADDR(sc, x) ((sc)->sc_cddma + EPIC_CDTXOFF((x))) 136 #define EPIC_CDRXADDR(sc, x) ((sc)->sc_cddma + EPIC_CDRXOFF((x))) 137 #define EPIC_CDFLADDR(sc, x) ((sc)->sc_cddma + EPIC_CDFLOFF((x))) 138 139 #define EPIC_CDTX(sc, x) (&(sc)->sc_control_data->ecd_txdescs[(x)]) 140 #define EPIC_CDRX(sc, x) (&(sc)->sc_control_data->ecd_rxdescs[(x)]) 141 #define EPIC_CDFL(sc, x) (&(sc)->sc_control_data->ecd_txfrags[(x)]) 142 143 #define EPIC_DSTX(sc, x) (&(sc)->sc_txsoft[(x)]) 144 #define EPIC_DSRX(sc, x) (&(sc)->sc_rxsoft[(x)]) 145 146 #define EPIC_CDTXSYNC(sc, x, ops) \ 147 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 148 EPIC_CDTXOFF((x)), sizeof(struct epic_txdesc), (ops)) 149 150 #define EPIC_CDRXSYNC(sc, x, ops) \ 151 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 152 EPIC_CDRXOFF((x)), sizeof(struct epic_rxdesc), (ops)) 153 154 #define EPIC_CDFLSYNC(sc, x, ops) \ 155 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 156 EPIC_CDFLOFF((x)), sizeof(struct epic_fraglist), (ops)) 157 158 #define EPIC_INIT_RXDESC(sc, x) \ 159 do { \ 160 struct epic_descsoft *__ds = EPIC_DSRX((sc), (x)); \ 161 struct epic_rxdesc *__rxd = EPIC_CDRX((sc), (x)); \ 162 struct mbuf *__m = __ds->ds_mbuf; \ 163 \ 164 /* \ 165 * Note we scoot the packet forward 2 bytes in the buffer \ 166 * so that the payload after the Ethernet header is aligned \ 167 * to a 4 byte boundary. \ 168 */ \ 169 __m->m_data = __m->m_ext.ext_buf + 2; \ 170 __rxd->er_bufaddr = __ds->ds_dmamap->dm_segs[0].ds_addr + 2; \ 171 __rxd->er_control = RXCTL_BUFLENGTH(__m->m_ext.ext_size - 2); \ 172 __rxd->er_nextdesc = EPIC_CDRXADDR((sc), EPIC_NEXTRX((x))); \ 173 __rxd->er_rxstatus = ER_RXSTAT_OWNER; \ 174 EPIC_CDRXSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 175 } while (/* CONSTCOND */ 0) 176 177 #ifdef _KERNEL 178 void epic_attach(struct epic_softc *); 179 int epic_intr(void *); 180 #endif /* _KERNEL */ 181 182 #endif /* _DEV_IC_SMC83C170VAR_H_ */ 183