First cut at a MI i82586 chip driver.
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/* $NetBSD: i82586var.h,v 1.1 1997/07/22 23:31:58 pk Exp $ */
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/*-
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* Copyright (c) 1993, 1994, 1995 Charles Hannum.
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* Copyright (c) 1992, 1993, University of Vermont and State
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* Agricultural College.
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* Copyright (c) 1992, 1993, Garrett A. Wollman.
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*
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* Portions:
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* Copyright (c) 1994, 1995, Rafal K. Boni
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* Copyright (c) 1990, 1991, William F. Jolitz
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* Copyright (c) 1990, The Regents of the University of California
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*
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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 without
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* modification, are permitted provided that the following conditions
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* 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 copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum, by the
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* University of Vermont and State Agricultural College and Garrett A.
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* Wollman, by William F. Jolitz, and by the University of California,
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* Berkeley, Lawrence Berkeley Laboratory, and its contributors.
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* 4. Neither the names of the Universities nor the names of the authors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Intel 82586 Ethernet chip
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* Register, bit, and structure definitions.
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*
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* Original StarLAN driver written by Garrett Wollman with reference to the
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* Clarkson Packet Driver code for this chip written by Russ Nelson and others.
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*
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* BPF support code taken from hpdev/if_le.c, supplied with tcpdump.
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*
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* 3C507 support is loosely based on code donated to NetBSD by Rafal Boni.
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*
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* Majorly cleaned up and 3C507 code merged by Charles Hannum.
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*
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* Converted to SUN ie driver by Charles D. Cranor,
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* October 1994, January 1995.
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* This sun version based on i386 version 1.30.
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*/
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#define IED_RINT 0x01
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#define IED_TINT 0x02
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#define IED_RNR 0x04
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#define IED_CNA 0x08
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#define IED_READFRAME 0x10
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#define IED_ALL 0x1f
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#define ETHER_MIN_LEN 64
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#define ETHER_MAX_LEN 1518
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#define ETHER_ADDR_LEN 6
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#define B_PER_F 3 /* recv buffers per frame */
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#define MXFRAMES 300 /* max number of recv frames */
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#define MXRXBUF (MXFRAMES*B_PER_F) /* number of buffers to allocate */
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#define IE_RBUF_SIZE 256 /* size of each receive buffer;
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MUST BE POWER OF TWO */
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#define NTXBUF 2 /* number of transmit commands */
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#define IE_TBUF_SIZE ETHER_MAX_LEN /* length of transmit buffer */
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/*
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* Ethernet status, per interface.
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*
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* hardware addresses/sizes to know (all KVA):
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* sc_iobase = base of chip's 24 bit address space
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* sc_maddr = base address of chip RAM as stored in ie_base of iscp
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* sc_msize = size of chip's RAM
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* sc_reg = address of card dependent registers
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*
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* the chip uses two types of pointers: 16 bit and 24 bit
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* 16 bit pointers are offsets from sc_maddr/ie_base
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* KVA(16 bit offset) = offset + sc_maddr
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* 24 bit pointers are offset from sc_iobase in KVA
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* KVA(24 bit address) = address + sc_iobase
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*
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* on the vme/multibus we have the page map to control where ram appears
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* in the address space. we choose to have RAM start at 0 in the
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* 24 bit address space. this means that sc_iobase == sc_maddr!
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* to get the phyiscal address of the board's RAM you must take the
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* top 12 bits of the physical address of the register address
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* and or in the 4 bits from the status word as bits 17-20 (remember that
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* the board ignores the chip's top 4 address lines).
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* For example:
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* if the register is @ 0xffe88000, then the top 12 bits are 0xffe00000.
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* to get the 4 bits from the the status word just do status & IEVME_HADDR.
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* suppose the value is "4". Then just shift it left 16 bits to get
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* it into bits 17-20 (e.g. 0x40000). Then or it to get the
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* address of RAM (in our example: 0xffe40000). see the attach routine!
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*
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* on the onboard ie interface the 24 bit address space is hardwired
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* to be 0xff000000 -> 0xffffffff of KVA. this means that sc_iobase
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* will be 0xff000000. sc_maddr will be where ever we allocate RAM
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* in KVA. note that since the SCP is at a fixed address it means
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* that we have to allocate a fixed KVA for the SCP.
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*/
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struct ie_softc {
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struct device sc_dev; /* device structure */
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struct intrhand sc_ih; /* interrupt info */
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caddr_t sc_iobase; /* KVA of base of 24 bit addr space */
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caddr_t sc_maddr; /* KVA of base of chip's RAM (16bit addr sp.)*/
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u_int sc_msize; /* how much RAM we have/use */
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caddr_t sc_reg; /* KVA of car's register */
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struct ethercom sc_ethercom;/* system ethercom structure */
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void (*hwreset) __P((struct ie_softc *));
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/* card dependent reset function */
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void (*hwinit) __P((struct ie_softc *));
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/* card dependent "go on-line" function */
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void (*chan_attn) __P((struct ie_softc *));
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/* card dependent attn function */
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void (*memcopy) __P((const void *, void *, u_int));
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/* card dependent memory copy function */
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void (*memzero) __P((void *, u_int));
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/* card dependent memory zero function */
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caddr_t (*align) __P((caddr_t));
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/* arch dependent alignment function */
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int (*intrhook) __P((struct ie_softc *));
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/* card dependent interrupt handling */
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int want_mcsetup; /* mcsetup flag */
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int promisc; /* are we in promisc mode? */
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/*
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* pointers to the 3 major control structures
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*/
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volatile struct ie_sys_conf_ptr *scp;
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volatile struct ie_int_sys_conf_ptr *iscp;
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volatile struct ie_sys_ctl_block *scb;
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/*
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* pointer and size of a block of KVA where the buffers
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* are to be allocated from
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*/
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caddr_t buf_area;
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int buf_area_sz;
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/*
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* the actual buffers (recv and xmit)
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*/
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volatile struct ie_recv_frame_desc *rframes[MXFRAMES];
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volatile struct ie_recv_buf_desc *rbuffs[MXRXBUF];
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volatile char *cbuffs[MXRXBUF];
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int rfhead, rftail, rbhead, rbtail;
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volatile struct ie_xmit_cmd *xmit_cmds[NTXBUF];
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volatile struct ie_xmit_buf *xmit_buffs[NTXBUF];
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u_char *xmit_cbuffs[NTXBUF];
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int xmit_busy;
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int xmit_free;
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int xchead, xctail;
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struct ie_en_addr mcast_addrs[MAXMCAST + 1];
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int mcast_count;
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int nframes; /* number of frames in use */
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int nrxbuf; /* number of recv buffs in use */
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#ifdef IEDEBUG
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int sc_debug;
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#endif
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};
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void ie_attach __P((struct ie_softc *, char *, u_int8_t *));
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int ieintr __P((void *));
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