NetBSD/sys/dev/ic/i82586var.h

202 lines
7.5 KiB
C

/* $NetBSD: i82586var.h,v 1.4 1997/08/01 20:33:03 pk Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995 Charles Hannum.
* Copyright (c) 1992, 1993, University of Vermont and State
* Agricultural College.
* Copyright (c) 1992, 1993, Garrett A. Wollman.
*
* Portions:
* Copyright (c) 1994, 1995, Rafal K. Boni
* Copyright (c) 1990, 1991, William F. Jolitz
* Copyright (c) 1990, The Regents of the University of California
*
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum, by the
* University of Vermont and State Agricultural College and Garrett A.
* Wollman, by William F. Jolitz, and by the University of California,
* Berkeley, Lawrence Berkeley Laboratory, and its contributors.
* 4. Neither the names of the Universities nor the names of the authors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 UNIVERSITY OR AUTHORS 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.
*/
/*
* Intel 82586 Ethernet chip
* Register, bit, and structure definitions.
*
* Original StarLAN driver written by Garrett Wollman with reference to the
* Clarkson Packet Driver code for this chip written by Russ Nelson and others.
*
* BPF support code taken from hpdev/if_le.c, supplied with tcpdump.
*
* 3C507 support is loosely based on code donated to NetBSD by Rafal Boni.
*
* Majorly cleaned up and 3C507 code merged by Charles Hannum.
*
* Converted to SUN ie driver by Charles D. Cranor,
* October 1994, January 1995.
* This sun version based on i386 version 1.30.
*/
#define IEDEBUG
#define IED_RINT 0x01
#define IED_TINT 0x02
#define IED_RNR 0x04
#define IED_CNA 0x08
#define IED_READFRAME 0x10
#define IED_ENQ 0x20
#define IED_XMIT 0x40
#define IED_ALL 0x7f
#define ETHER_MIN_LEN 64
#define ETHER_MAX_LEN 1518
#define ETHER_ADDR_LEN 6
#define B_PER_F 3 /* recv buffers per frame */
#define MAXFRAMES 300 /* max number of recv frames */
#define MAXRXBUF (MAXFRAMES*B_PER_F) /* number of buffers to allocate */
#define IE_RBUF_SIZE 256 /* size of each receive buffer;
MUST BE POWER OF TWO */
#define NTXBUF 2 /* number of transmit commands */
#define IE_TBUF_SIZE ETHER_MAX_LEN /* length of transmit buffer */
/*
* Ethernet status, per interface.
*
* hardware addresses/sizes to know (all KVA):
* sc_iobase = base of chip's 24 bit address space
* sc_maddr = base address of chip RAM as stored in ie_base of iscp
* sc_msize = size of chip's RAM
* sc_reg = address of card dependent registers
*
* the chip uses two types of pointers: 16 bit and 24 bit
* 16 bit pointers are offsets from sc_maddr/ie_base
* KVA(16 bit offset) = offset + sc_maddr
* 24 bit pointers are offset from sc_iobase in KVA
* KVA(24 bit address) = address + sc_iobase
*
* on the vme/multibus we have the page map to control where ram appears
* in the address space. we choose to have RAM start at 0 in the
* 24 bit address space. this means that sc_iobase == sc_maddr!
* to get the phyiscal address of the board's RAM you must take the
* top 12 bits of the physical address of the register address
* and or in the 4 bits from the status word as bits 17-20 (remember that
* the board ignores the chip's top 4 address lines).
* For example:
* if the register is @ 0xffe88000, then the top 12 bits are 0xffe00000.
* to get the 4 bits from the the status word just do status & IEVME_HADDR.
* suppose the value is "4". Then just shift it left 16 bits to get
* it into bits 17-20 (e.g. 0x40000). Then or it to get the
* address of RAM (in our example: 0xffe40000). see the attach routine!
*
* on the onboard ie interface the 24 bit address space is hardwired
* to be 0xff000000 -> 0xffffffff of KVA. this means that sc_iobase
* will be 0xff000000. sc_maddr will be where ever we allocate RAM
* in KVA. note that since the SCP is at a fixed address it means
* that we have to allocate a fixed KVA for the SCP.
*/
struct ie_softc {
struct device sc_dev; /* device structure */
bus_space_tag_t bt;
bus_space_handle_t bh;
caddr_t sc_iobase; /* KVA of base of 24 bit addr space */
caddr_t sc_maddr; /* KVA of base of chip's RAM (16bit addr sp.)*/
u_int sc_msize; /* how much RAM we have/use */
caddr_t sc_reg; /* KVA of car's register */
struct ethercom sc_ethercom;/* system ethercom structure */
void (*hwreset) __P((struct ie_softc *));
/* card dependent reset function */
void (*hwinit) __P((struct ie_softc *));
/* card dependent "go on-line" function */
void (*chan_attn) __P((struct ie_softc *));
/* card dependent attn function */
void (*memcopy) __P((const void *, void *, u_int));
/* card dependent memory copy function */
void (*memzero) __P((void *, u_int));
/* card dependent memory zero function */
caddr_t (*align) __P((caddr_t));
/* arch dependent alignment function */
int (*intrhook) __P((struct ie_softc *));
/* card dependent interrupt handling */
int want_mcsetup; /* mcsetup flag */
int promisc; /* are we in promisc mode? */
/*
* pointers to the 3 major control structures
*/
volatile struct ie_sys_conf_ptr *scp;
volatile struct ie_int_sys_conf_ptr *iscp;
volatile struct ie_sys_ctl_block *scb;
/*
* pointer and size of a block of KVA where the buffers
* are to be allocated from
*/
caddr_t buf_area;
int buf_area_sz;
/*
* the actual buffers (recv and xmit)
*/
volatile struct ie_recv_frame_desc *rframes[MAXFRAMES];
volatile struct ie_recv_buf_desc *rbuffs[MAXRXBUF];
volatile char *cbuffs[MAXRXBUF];
int rfhead, rftail, rbhead, rbtail;
volatile struct ie_cmd_common *nop_cmds[NTXBUF+1];
volatile struct ie_xmit_cmd *xmit_cmds[NTXBUF];
volatile struct ie_xmit_buf *xmit_buffs[NTXBUF];
u_char *xmit_cbuffs[NTXBUF];
int xmit_busy;
int xchead, xctail;
struct ie_en_addr mcast_addrs[MAXMCAST + 1];
int mcast_count;
int nframes; /* number of frames in use */
int nrxbuf; /* number of recv buffs in use */
#ifdef IEDEBUG
int sc_debug;
#endif
};
void ie_attach __P((struct ie_softc *, char *, u_int8_t *));
int ieintr __P((void *));