1 /* $NetBSD: i82586var.h,v 1.22 2008/04/28 20:23:50 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg and Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1992, 1993, University of Vermont and State 34 * Agricultural College. 35 * Copyright (c) 1992, 1993, Garrett A. Wollman. 36 * 37 * Portions: 38 * Copyright (c) 1994, 1995, Rafal K. Boni 39 * Copyright (c) 1990, 1991, William F. Jolitz 40 * Copyright (c) 1990, The Regents of the University of California 41 * 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by the University of Vermont 55 * and State Agricultural College and Garrett A. Wollman, by William F. 56 * Jolitz, and by the University of California, Berkeley, Lawrence 57 * Berkeley Laboratory, and its contributors. 58 * 4. Neither the names of the Universities nor the names of the authors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 */ 74 75 /* 76 * Intel 82586 Ethernet chip 77 * Register, bit, and structure definitions. 78 * 79 * Original StarLAN driver written by Garrett Wollman with reference to the 80 * Clarkson Packet Driver code for this chip written by Russ Nelson and others. 81 * 82 * BPF support code taken from hpdev/if_le.c, supplied with tcpdump. 83 * 84 * 3C507 support is loosely based on code donated to NetBSD by Rafal Boni. 85 * 86 * Majorly cleaned up and 3C507 code merged by Charles Hannum. 87 * 88 * Converted to SUN ie driver by Charles D. Cranor, 89 * October 1994, January 1995. 90 * This sun version based on i386 version 1.30. 91 */ 92 93 #ifndef I82586_DEBUG 94 #define I82586_DEBUG 0 95 #endif 96 97 /* Debug elements */ 98 #define IED_RINT 0x01 99 #define IED_TINT 0x02 100 #define IED_RNR 0x04 101 #define IED_CNA 0x08 102 #define IED_READFRAME 0x10 103 #define IED_ENQ 0x20 104 #define IED_XMIT 0x40 105 #define IED_ALL 0x7f 106 107 #define B_PER_F 3 /* recv buffers per frame */ 108 #define IE_RBUF_SIZE 256 /* size of each receive buffer; 109 MUST BE POWER OF TWO */ 110 #define NTXBUF 2 /* number of transmit commands */ 111 #define IE_TBUF_SIZE ETHER_MAX_LEN /* length of transmit buffer */ 112 113 #define IE_MAXMCAST (IE_TBUF_SIZE/6)/* must fit in transmit buffer */ 114 115 116 #define INTR_ENTER 0 /* intr hook called on ISR entry */ 117 #define INTR_EXIT 1 /* intr hook called on ISR exit */ 118 #define INTR_LOOP 2 /* intr hook called on ISR loop */ 119 #define INTR_ACK 3 /* intr hook called on ie_ack */ 120 121 #define CHIP_PROBE 0 /* reset called from chip probe */ 122 #define CARD_RESET 1 /* reset called from card reset */ 123 124 /* 125 * Ethernet status, per interface. 126 * 127 * The chip uses two types of pointers: 16 bit and 24 bit 128 * 24 bit pointers cover the board's memory. 129 * 16 bit pointers are offsets from the ISCP's `ie_base' 130 * 131 * The board's memory is represented by the bus handle `bh'. The MI 132 * i82586 driver deals exclusively with offsets relative to the 133 * board memory bus handle. The `ie_softc' fields below that are marked 134 * `MD' are in the domain of the front-end driver; they opaque to the 135 * MI driver part. 136 * 137 * The front-end is required to manage the SCP and ISCP structures. i.e. 138 * allocate room for them on the board's memory, and arrange to point the 139 * chip at the SCB structure, the offset of which is passed to the MI 140 * driver in `sc_scb'. 141 * 142 * The following functions provide the glue necessary to deal with 143 * host and bus idiosyncracies: 144 * 145 * hwreset - board reset 146 * hwinit - board initialization 147 * chan_attn - get chip to look at prepared commands 148 * intrhook - board dependent interrupt processing 149 * 150 * All of the following shared-memory access function use an offset 151 * relative to the bus handle to indicate the shared memory location. 152 * The bus_{read/write}N function take or return offset into the 153 * shared memory in the host's byte-order. 154 * 155 * memcopyin - copy device memory: board to KVA 156 * memcopyout - copy device memory: KVA to board 157 * bus_read16 - read a 16-bit i82586 pointer 158 `offset' argument will be 16-bit aligned 159 * bus_write16 - write a 16-bit i82586 pointer 160 `offset' argument will be 16-bit aligned 161 * bus_write24 - write a 24-bit i82586 pointer 162 `offset' argument will be 32-bit aligned 163 * bus_barrier - perform a bus barrier operation, forcing 164 all outstanding reads/writes to complete 165 * 166 */ 167 168 struct ie_softc { 169 struct device sc_dev; /* device structure */ 170 171 bus_space_tag_t bt; /* bus-space tag of card memory */ 172 bus_space_handle_t bh; /* bus-space handle of card memory */ 173 174 bus_dmamap_t sc_dmamap; /* bus dma handle */ 175 176 void *sc_iobase; /* (MD) KVA of base of 24 bit addr space */ 177 void *sc_maddr; /* (MD) KVA of base of chip's RAM 178 (16bit addr space) */ 179 u_int sc_msize; /* (MD) how much RAM we have/use */ 180 void *sc_reg; /* (MD) KVA of car's register */ 181 182 struct ethercom sc_ethercom; /* system ethercom structure */ 183 struct ifmedia sc_media; /* supported media information */ 184 185 /* Bus glue */ 186 void (*hwreset)(struct ie_softc *, int); 187 void (*hwinit)(struct ie_softc *); 188 void (*chan_attn)(struct ie_softc *, int); 189 int (*intrhook)(struct ie_softc *, int); 190 191 void (*memcopyin)(struct ie_softc *, void *, int, size_t); 192 void (*memcopyout)(struct ie_softc *, const void *, int, size_t); 193 u_int16_t (*ie_bus_read16)(struct ie_softc *, int); 194 void (*ie_bus_write16)(struct ie_softc *, int, u_int16_t); 195 void (*ie_bus_write24)(struct ie_softc *, int, int); 196 void (*ie_bus_barrier)(struct ie_softc *, int, int, int); 197 198 /* Media management */ 199 int (*sc_mediachange)(struct ie_softc *); 200 /* card dependent media change */ 201 void (*sc_mediastatus)(struct ie_softc *, struct ifmediareq *); 202 /* card dependent media status */ 203 204 205 /* 206 * Offsets (relative to bus handle) of the i82586 SYSTEM structures. 207 */ 208 int scp; /* Offset to the SCP (set by front-end) */ 209 int iscp; /* Offset to the ISCP (set by front-end) */ 210 int scb; /* Offset to SCB (set by front-end) */ 211 212 /* 213 * Offset and size of a block of board memory where the buffers 214 * are to be allocated from (initialized by front-end). 215 */ 216 int buf_area; /* Start of descriptors and buffers */ 217 int buf_area_sz; /* Size of above */ 218 219 /* 220 * The buffers & descriptors (recv and xmit) 221 */ 222 int rframes; /* Offset to `nrxbuf' frame descriptors */ 223 int rbds; /* Offset to `nrxbuf' buffer descriptors */ 224 int rbufs; /* Offset to `nrxbuf' receive buffers */ 225 #define IE_RBUF_ADDR(sc, i) (sc->rbufs + ((i) * IE_RBUF_SIZE)) 226 int rfhead, rftail; 227 int rbhead, rbtail; 228 int nframes; /* number of frames in use */ 229 int nrxbuf; /* number of recv buffs in use */ 230 int rnr_expect; /* XXX - expect a RCVR not ready interrupt */ 231 232 int nop_cmds; /* Offset to NTXBUF no-op commands */ 233 int xmit_cmds; /* Offset to NTXBUF transmit commands */ 234 int xbds; /* Offset to NTXBUF buffer descriptors */ 235 int xbufs; /* Offset to NTXBUF transmit buffers */ 236 #define IE_XBUF_ADDR(sc, i) (sc->xbufs + ((i) * IE_TBUF_SIZE)) 237 238 int xchead, xctail; 239 int xmit_busy; 240 int do_xmitnopchain; /* Controls use of xmit NOP chains */ 241 242 /* Multicast addresses */ 243 char *mcast_addrs; /* Current MC filter addresses */ 244 int mcast_addrs_size; /* Current size of MC buffer */ 245 int mcast_count; /* Current # of addrs in buffer */ 246 int want_mcsetup; /* run mcsetup at next opportunity */ 247 248 int promisc; /* are we in promisc mode? */ 249 int async_cmd_inprogress; /* we didn't wait for 586 to accept 250 a command */ 251 252 #if I82586_DEBUG 253 int sc_debug; 254 #endif 255 }; 256 257 /* Exported functions */ 258 int i82586_intr(void *); 259 int i82586_proberam(struct ie_softc *); 260 void i82586_attach(struct ie_softc *, const char *, u_int8_t *, int*, int, 261 int); 262 263 /* Shortcut macros to optional (driver uses default if unspecified) callbacks */ 264 #define IE_BUS_BARRIER(sc, offset, length, flags) \ 265 do { \ 266 if ((sc)->ie_bus_barrier) \ 267 ((sc)->ie_bus_barrier)((sc), (offset), (length), (flags));\ 268 else \ 269 bus_space_barrier((sc)->bt, (sc)->bh, (offset), (length), \ 270 (flags)); \ 271 } while (0) 272 273