From f33b02797e4df77de22ae4f57d8392b72a10328c Mon Sep 17 00:00:00 2001 From: rgrimes Date: Tue, 12 Oct 1993 06:53:10 +0000 Subject: i82586 support file for Garrett Wollmans ie driver --- sys/dev/ic/i82586.h | 325 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 325 insertions(+) create mode 100644 sys/dev/ic/i82586.h (limited to 'sys/dev/ic') diff --git a/sys/dev/ic/i82586.h b/sys/dev/ic/i82586.h new file mode 100644 index 0000000..577313d --- /dev/null +++ b/sys/dev/ic/i82586.h @@ -0,0 +1,325 @@ +/*- + * 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. + * + * $Id$ + */ + +/* + * 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]; +}; + +/* + * This is the master configuration block. It tells the hardware where all + * the rest of the stuff is. + */ +struct ie_sys_conf_ptr { + u_short mbz; /* must be zero */ + u_char ie_bus_use; /* true if 8-bit only */ + u_char mbz2[5]; /* must be zero */ + caddr_t ie_iscp_ptr; /* 24-bit physaddr of ISCP */ +}; + +/* + * Note that this is wired in hardware; the SCP is always located here, no + * matter what. + */ +#define IE_SCP_ADDR 0xfffff4 + +/* + * 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_int_sys_conf_ptr { + u_char ie_busy; /* zeroed after init */ + u_char mbz; + u_short ie_scb_offset; /* 16-bit physaddr of next struct */ + caddr_t ie_base; /* 24-bit physaddr for all 16-bit vars */ +}; + +/* + * This FINALLY tells the hardware what to do and where to put it. + */ +struct ie_sys_ctl_block { + 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 /* reveiver 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 */ + caddr_t ie_rbd_buffer; /* 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_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 */ +#define IE_XS_LATECOLL 0x0800 /* Late collision */ + +/* + * 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. */ + caddr_t ie_xmit_buf; /* 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 50 /* 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) */ +}; + +/* + * Here are a few useful functions. We could have done these as macros, + * but since we have the inline facility, it makes sense to use that + * instead. + */ +inline void +ie_setup_config(volatile struct ie_config_cmd *cmd, + int promiscuous, int manchester) { + cmd->ie_config_count = 0x0c; + cmd->ie_fifo = 8; + cmd->ie_save_bad = 0x40; + cmd->ie_addr_len = 0x2e; + cmd->ie_priority = 0; + cmd->ie_ifs = 0x60; + cmd->ie_slot_low = 0; + cmd->ie_slot_high = 0xf2; + cmd->ie_promisc = !!promiscuous | manchester << 2; + cmd->ie_crs_cdt = 0; + cmd->ie_min_len = 64; + cmd->ie_junk = 0xff; +} + +inline caddr_t +Align(caddr_t ptr) { + unsigned long l = (unsigned long)ptr; + l = (l + 3) & ~3L; + return (caddr_t)l; +} + +inline void +ie_ack(volatile struct ie_sys_ctl_block *scb, + u_int mask, int unit, + void (*ca)(int)) { + scb->ie_command = scb->ie_status & mask; + (*ca)(unit); +} -- cgit v1.1