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/* $OpenBSD: i82586.h,v 1.2 1998/08/22 08:37:58 smurph Exp $ */
/*-
* Copyright (c) 1995 Theo de Raadt
* Copyright (c) 1992, University of Vermont and State Agricultural College.
* Copyright (c) 1992, Garrett A. Wollman.
* 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 the University of
* Vermont and State Agricultural College and Garrett A. Wollman.
* 4. Neither the name of the University nor the name of the author
* 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 AUTHOR 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.
*
* Written by GAW with reference to the Clarkson Packet Driver code for this
* chip written by Russ Nelson and others.
*/
struct ie_en_addr {
u_char data[6];
};
/*
* the only actual IE registers.
*/
struct iereg {
u_short ie_porthigh;
u_short ie_portlow;
u_long ie_attention;
};
#define IE_PORT_NEWSCP 0x00000002
#define IE_PORT_RESET 0x00000000
/*
* This is the master configuration block. It tells the hardware where
* all the rest of the stuff is.
*/
struct ie_scp {
u_char mbz1[3]; /* must be zero */
u_char scp_sysbus; /* true if 8-bit only */
u_char mbz2[4]; /* must be zero */
u_short scp_iscp_low; /* 24-bit physaddr of ISCP */
u_char mbz3[1];
u_char scp_iscp_high; /* the rest of the physaddr.. */
};
/*
* The tells the hardware where all the rest of the stuff is, too.
* FIXME: some of these should be re-commented after we figure out their
* REAL function.
*/
struct ie_iscp {
u_char mbz1[1];
u_char iscp_busy; /* zeroed after init */
u_short iscp_scboffset; /* 16-bit physaddr of next struct */
u_short iscp_base_low; /* 24-bit physaddr for all 16-bit vars */
u_char mbz2[1];
u_char iscp_base_high; /* rest of physaddr ... */
};
/*
* This FINALLY tells the hardware what to do and where to put it.
*/
struct ie_scb {
u_short ie_status; /* status word */
u_short ie_command; /* command word */
u_short ie_command_list;/* 16-pointer to command block list */
u_short ie_recv_list; /* 16-pointer to receive frame list */
u_short ie_err_crc; /* CRC errors */
u_short ie_err_align; /* Alignment errors */
u_short ie_err_resource;/* Resource errors */
u_short ie_err_overrun; /* Overrun errors */
};
/* Command values */
#define IE_RU_COMMAND 0x0070 /* mask for RU command */
#define IE_RU_NOP 0 /* for completeness */
#define IE_RU_START 0x0010 /* start receive unit command */
#define IE_RU_ENABLE 0x0020 /* enable receiver command */
#define IE_RU_DISABLE 0x0030 /* disable receiver command */
#define IE_RU_ABORT 0x0040 /* abort current receive operation */
#define IE_CU_COMMAND 0x0700 /* mask for CU command */
#define IE_CU_NOP 0 /* included for completeness */
#define IE_CU_START 0x0100 /* do-command command */
#define IE_CU_RESUME 0x0200 /* resume a suspended cmd list */
#define IE_CU_STOP 0x0300 /* SUSPEND was already taken */
#define IE_CU_ABORT 0x0400 /* abort current command */
#define IE_ACK_COMMAND 0xf000 /* mask for ACK command */
#define IE_ACK_CX 0x8000 /* ack IE_ST_DONE */
#define IE_ACK_FR 0x4000 /* ack IE_ST_RECV */
#define IE_ACK_CNA 0x2000 /* ack IE_ST_ALLDONE */
#define IE_ACK_RNR 0x1000 /* ack IE_ST_RNR */
#define IE_ACTION_COMMAND(x) (((x) & IE_CU_COMMAND) == IE_CU_START)
/* is this command an action command? */
/* Status values */
#define IE_ST_WHENCE 0xf000 /* mask for cause of interrupt */
#define IE_ST_DONE 0x8000 /* command with I bit completed */
#define IE_ST_RECV 0x4000 /* frame received */
#define IE_ST_ALLDONE 0x2000 /* all commands completed */
#define IE_ST_RNR 0x1000 /* receive not ready */
#define IE_CU_STATUS 0x700 /* mask for command unit status */
#define IE_CU_ACTIVE 0x200 /* command unit is active */
#define IE_CU_SUSPEND 0x100 /* command unit is suspended */
#define IE_RU_STATUS 0x70 /* mask for receiver unit status */
#define IE_RU_SUSPEND 0x10 /* receiver is suspended */
#define IE_RU_NOSPACE 0x20 /* receiver has no resources */
#define IE_RU_READY 0x40 /* receiver is ready */
/*
* This is filled in partially by the chip, partially by us.
*/
struct ie_recv_frame_desc {
u_short ie_fd_status; /* status for this frame */
u_short ie_fd_last; /* end of frame list flag */
u_short ie_fd_next; /* 16-pointer to next RFD */
u_short ie_fd_buf_desc; /* 16-pointer to list of buffer desc's */
struct ie_en_addr dest; /* destination ether */
struct ie_en_addr src; /* source ether */
u_short ie_length; /* 802 length/Ether type */
u_short mbz; /* must be zero */
};
#define IE_FD_LAST 0x8000 /* last rfd in list */
#define IE_FD_SUSP 0x4000 /* suspend RU after receipt */
#define IE_FD_COMPLETE 0x8000 /* frame is complete */
#define IE_FD_BUSY 0x4000 /* frame is busy */
#define IE_FD_OK 0x2000 /* frame is bad */
#define IE_FD_RNR 0x0200 /* receiver out of resources here */
/*
* linked list of buffers...
*/
struct ie_recv_buf_desc {
u_short ie_rbd_actual; /* status for this buffer */
u_short ie_rbd_next; /* 16-pointer to next RBD */
u_short ie_rbd_buffer_low; /* 24-pointer to buffer for this RBD */
u_short ie_rbd_buffer_high; /* 24-pointer to buffer for this RBD */
u_short ie_rbd_length; /* length of the buffer */
u_short mbz; /* must be zero */
};
#define IE_RBD_LAST 0x8000 /* last buffer */
#define IE_RBD_USED 0x4000 /* this buffer has data */
/*
* All commands share this in common.
*/
struct ie_cmd_common {
u_short ie_cmd_status; /* status of this command */
u_short ie_cmd_cmd; /* command word */
u_short ie_cmd_link; /* link to next command */
};
#define IE_STAT_COMPL 0x8000 /* command is completed */
#define IE_STAT_BUSY 0x4000 /* command is running now */
#define IE_STAT_OK 0x2000 /* command completed successfully */
#define IE_STAT_ABORT 0x1000 /* command was aborted */
#define IE_CMD_NOP 0x0000 /* NOP */
#define IE_CMD_IASETUP 0x0001 /* initial address setup */
#define IE_CMD_CONFIG 0x0002 /* configure command */
#define IE_CMD_MCAST 0x0003 /* multicast setup command */
#define IE_CMD_XMIT 0x0004 /* transmit command */
#define IE_CMD_TDR 0x0005 /* time-domain reflectometer command */
#define IE_CMD_DUMP 0x0006 /* dump command */
#define IE_CMD_DIAGNOSE 0x0007 /* diagnostics command */
#define IE_CMD_LAST 0x8000 /* this is the last command in the list */
#define IE_CMD_SUSPEND 0x4000 /* suspend CU after this command */
#define IE_CMD_INTR 0x2000 /* post an interrupt after completion */
/*
* This is the command to transmit a frame.
*/
struct ie_xmit_cmd {
struct ie_cmd_common com; /* common part */
#define ie_xmit_status com.ie_cmd_status
u_short ie_xmit_desc; /* 16-pointer to buffer descriptor */
struct ie_en_addr ie_xmit_addr; /* destination address */
u_short ie_xmit_length; /* 802.3 length/Ether type field */
};
#define IE_XS_MAXCOLL 0x000f /* number of collisions during transmit */
#define IE_XS_EXCMAX 0x0020 /* exceeded maximum number of collisions */
#define IE_XS_SQE 0x0040 /* SQE positive */
#define IE_XS_DEFERRED 0x0080 /* transmission deferred */
#define IE_XS_UNDERRUN 0x0100 /* DMA underrun */
#define IE_XS_LOSTCTS 0x0200 /* Lost CTS */
#define IE_XS_NOCARRIER 0x0400 /* No Carrier */
/*
* This is a buffer descriptor for a frame to be transmitted.
*/
struct ie_xmit_buf {
u_short ie_xmit_flags; /* see below */
u_short ie_xmit_next; /* 16-pointer to next desc. */
u_short ie_xmit_buf_low;/* 24-pointer to the actual buffer */
u_short ie_xmit_buf_high; /* 24-pointer to the actual buffer */
};
#define IE_XMIT_LAST 0x8000 /* this TBD is the last one */
/* The rest of the `flags' word is actually the length. */
/*
* Multicast setup command.
*/
#define MAXMCAST 250 /* must fit in transmit buffer */
struct ie_mcast_cmd {
struct ie_cmd_common com; /* common part */
#define ie_mcast_status com.ie_cmd_status
u_short ie_mcast_bytes; /* size (in bytes) of multicast addresses */
struct ie_en_addr ie_mcast_addrs[MAXMCAST + 1]; /* space for them */
};
/*
* Time Domain Reflectometer command.
*/
struct ie_tdr_cmd {
struct ie_cmd_common com; /* common part */
#define ie_tdr_status com.ie_cmd_status
u_short ie_tdr_time; /* error bits and time */
};
#define IE_TDR_SUCCESS 0x8000 /* TDR succeeded without error */
#define IE_TDR_XCVR 0x4000 /* detected a transceiver problem */
#define IE_TDR_OPEN 0x2000 /* detected an open */
#define IE_TDR_SHORT 0x1000 /* TDR detected a short */
#define IE_TDR_TIME 0x07ff /* mask for reflection time */
/*
* Initial Address Setup command
*/
struct ie_iasetup_cmd {
struct ie_cmd_common com;
#define ie_iasetup_status com.ie_cmd_status
struct ie_en_addr ie_address;
};
/*
* Configuration command
*/
struct ie_config_cmd {
struct ie_cmd_common com; /* common part */
#define ie_config_status com.ie_cmd_status
u_char ie_config_count;/* byte count (0x0c) */
u_char ie_fifo; /* fifo (8) */
u_char ie_save_bad; /* save bad frames (0x40) */
u_char ie_addr_len; /* address length (0x2e) (AL-LOC == 1) */
u_char ie_priority; /* priority and backoff (0x0) */
u_char ie_ifs; /* inter-frame spacing (0x60) */
u_char ie_slot_low; /* slot time, LSB (0x0) */
u_char ie_slot_high; /* slot time, MSN, and retries (0xf2) */
u_char ie_promisc; /* 1 if promiscuous, else 0 */
u_char ie_crs_cdt; /* CSMA/CD parameters (0x0) */
u_char ie_min_len; /* min frame length (0x40) */
u_char ie_junk; /* stuff for 82596 (0xff) */
};
struct iemem {
volatile struct ie_scp im_scp;
u_char xx1[4];
volatile struct ie_iscp im_iscp;
volatile struct ie_scb im_scb;
volatile struct ie_config_cmd im_cc;
volatile struct ie_iasetup_cmd im_ic;
volatile struct ie_recv_frame_desc im_rfd[NRXBUF];
volatile struct ie_recv_buf_desc im_rbd[NRXBUF];
volatile struct ie_xmit_cmd im_xc[NTXBUF];
volatile struct ie_xmit_buf im_xd[NTXBUF];
volatile u_char im_rxbuf[NRXBUF * IE_RBUF_SIZE];
volatile u_char im_txbuf[NTXBUF * ETHER_MAX_LEN];
};
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