1583 lines
40 KiB
C
1583 lines
40 KiB
C
/*
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* (Mostly) Written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: aha1542.c,v 1.13 1993/10/28 02:38:36 rgrimes Exp $
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*/
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/*
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* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
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*/
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/*
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* a FEW lines in this driver come from a MACH adaptec-disk driver
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* so the copyright below is included:
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*
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* Copyright 1990 by Open Software Foundation,
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* Grenoble, FRANCE
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*
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* All Rights Reserved
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appears in all copies and
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* that both the copyright notice and this permission notice appear in
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* supporting documentation, and that the name of OSF or Open Software
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* Foundation not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission.
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*
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* OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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* IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
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* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <aha.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#ifdef MACH /* EITHER CMU OR OSF */
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#include <i386/ipl.h>
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#include <i386at/scsi.h>
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#include <i386at/scsiconf.h>
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#ifdef OSF /* OSF ONLY */
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#include <sys/table.h>
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#include <i386/handler.h>
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#include <i386/dispatcher.h>
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#include <i386/AT386/atbus.h>
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#else OSF /* CMU ONLY */
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#include <i386at/atbus.h>
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#include <i386/pio.h>
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#endif OSF
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#endif MACH /* end of MACH specific */
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#ifdef __386BSD__ /* 386BSD specific */
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#define isa_dev isa_device
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#define dev_unit id_unit
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#define dev_addr id_iobase
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#include <i386/isa/isa_device.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#endif __386BSD__
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#ifdef __386BSD__
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#include "ddb.h"
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#if NDDB > 0
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int Debugger();
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#else NDDB
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#define Debugger() panic("should call debugger here (adaptec.c)")
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#endif NDDB
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#endif __386BSD__
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extern int hz;
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extern int delaycount; /* from clock setup code */
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/************************** board definitions *******************************/
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/*
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* I/O Port Interface
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*/
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#define AHA_BASE aha_base[unit]
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#define AHA_CTRL_STAT_PORT (AHA_BASE + 0x0) /* control & status */
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#define AHA_CMD_DATA_PORT (AHA_BASE + 0x1) /* cmds and datas */
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#define AHA_INTR_PORT (AHA_BASE + 0x2) /* Intr. stat */
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/*
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* AHA_CTRL_STAT bits (write)
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*/
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#define AHA_HRST 0x80 /* Hardware reset */
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#define AHA_SRST 0x40 /* Software reset */
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#define AHA_IRST 0x20 /* Interrupt reset */
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#define AHA_SCRST 0x10 /* SCSI bus reset */
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/*
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* AHA_CTRL_STAT bits (read)
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*/
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#define AHA_STST 0x80 /* Self test in Progress */
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#define AHA_DIAGF 0x40 /* Diagnostic Failure */
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#define AHA_INIT 0x20 /* Mbx Init required */
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#define AHA_IDLE 0x10 /* Host Adapter Idle */
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#define AHA_CDF 0x08 /* cmd/data out port full */
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#define AHA_DF 0x04 /* Data in port full */
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#define AHA_INVDCMD 0x01 /* Invalid command */
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/*
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* AHA_CMD_DATA bits (write)
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*/
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#define AHA_NOP 0x00 /* No operation */
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#define AHA_MBX_INIT 0x01 /* Mbx initialization */
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#define AHA_START_SCSI 0x02 /* start scsi command */
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#define AHA_START_BIOS 0x03 /* start bios command */
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#define AHA_INQUIRE 0x04 /* Adapter Inquiry */
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#define AHA_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */
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#define AHA_SEL_TIMEOUT_SET 0x06 /* set selection time-out */
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#define AHA_BUS_ON_TIME_SET 0x07 /* set bus-on time */
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#define AHA_BUS_OFF_TIME_SET 0x08 /* set bus-off time */
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#define AHA_SPEED_SET 0x09 /* set transfer speed */
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#define AHA_DEV_GET 0x0a /* return installed devices */
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#define AHA_CONF_GET 0x0b /* return configuration data */
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#define AHA_TARGET_EN 0x0c /* enable target mode */
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#define AHA_SETUP_GET 0x0d /* return setup data */
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#define AHA_WRITE_CH2 0x1a /* write channel 2 buffer */
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#define AHA_READ_CH2 0x1b /* read channel 2 buffer */
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#define AHA_WRITE_FIFO 0x1c /* write fifo buffer */
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#define AHA_READ_FIFO 0x1d /* read fifo buffer */
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#define AHA_ECHO 0x1e /* Echo command data */
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#define AHA_EXT_BIOS 0x28 /* return extended bios info */
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#define AHA_MBX_ENABLE 0x29 /* enable mail box interface */
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struct aha_cmd_buf {
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u_char byte[16];
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};
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/*
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* AHA_INTR_PORT bits (read)
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*/
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#define AHA_ANY_INTR 0x80 /* Any interrupt */
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#define AHA_SCRD 0x08 /* SCSI reset detected */
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#define AHA_HACC 0x04 /* Command complete */
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#define AHA_MBOA 0x02 /* MBX out empty */
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#define AHA_MBIF 0x01 /* MBX in full */
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/*
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* Mail box defs
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*/
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#define AHA_MBX_SIZE 16 /* mail box size */
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struct aha_mbx {
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struct aha_mbx_out {
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unsigned char cmd;
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unsigned char ccb_addr[3];
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} mbo [AHA_MBX_SIZE];
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struct aha_mbx_in{
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unsigned char stat;
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unsigned char ccb_addr[3];
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} mbi[AHA_MBX_SIZE];
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};
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/*
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* mbo.cmd values
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*/
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#define AHA_MBO_FREE 0x0 /* MBO entry is free */
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#define AHA_MBO_START 0x1 /* MBO activate entry */
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#define AHA_MBO_ABORT 0x2 /* MBO abort entry */
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#define AHA_MBI_FREE 0x0 /* MBI entry is free */
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#define AHA_MBI_OK 0x1 /* completed without error */
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#define AHA_MBI_ABORT 0x2 /* aborted ccb */
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#define AHA_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */
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#define AHA_MBI_ERROR 0x4 /* Completed with error */
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extern struct aha_mbx aha_mbx[];
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/* FOR OLD VERSIONS OF THE !%$@ this may have to be 16 (yuk) */
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#define AHA_NSEG 17 /* Number of scatter gather segments <= 16 */
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/* allow 64 K i/o (min) */
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struct aha_ccb {
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unsigned char opcode;
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unsigned char lun:3;
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unsigned char data_in:1; /* must be 0 */
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unsigned char data_out:1; /* must be 0 */
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unsigned char target:3;
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unsigned char scsi_cmd_length;
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unsigned char req_sense_length;
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unsigned char data_length[3];
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unsigned char data_addr[3];
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unsigned char link_addr[3];
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unsigned char link_id;
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unsigned char host_stat;
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unsigned char target_stat;
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unsigned char reserved[2];
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struct scsi_generic scsi_cmd;
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struct scsi_sense_data scsi_sense;
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struct aha_scat_gath {
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unsigned char seg_len[3];
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unsigned char seg_addr[3];
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} scat_gath[AHA_NSEG];
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struct aha_ccb *next;
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struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */
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struct aha_mbx_out *mbx; /* pointer to mail box */
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int flags;
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#define CCB_FREE 0
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#define CCB_ACTIVE 1
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#define CCB_ABORTED 2
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};
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/*
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* opcode fields
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*/
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#define AHA_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */
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#define AHA_TARGET_CCB 0x01 /* SCSI Target CCB */
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#define AHA_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather*/
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#define AHA_RESET_CCB 0x81 /* SCSI Bus reset */
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/*
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* aha_ccb.host_stat values
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*/
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#define AHA_OK 0x00 /* cmd ok */
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#define AHA_LINK_OK 0x0a /* Link cmd ok */
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#define AHA_LINK_IT 0x0b /* Link cmd ok + int */
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#define AHA_SEL_TIMEOUT 0x11 /* Selection time out */
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#define AHA_OVER_UNDER 0x12 /* Data over/under run */
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#define AHA_BUS_FREE 0x13 /* Bus dropped at unexpected time */
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#define AHA_INV_BUS 0x14 /* Invalid bus phase/sequence */
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#define AHA_BAD_MBO 0x15 /* Incorrect MBO cmd */
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#define AHA_BAD_CCB 0x16 /* Incorrect ccb opcode */
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#define AHA_BAD_LINK 0x17 /* Not same values of LUN for links */
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#define AHA_INV_TARGET 0x18 /* Invalid target direction */
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#define AHA_CCB_DUP 0x19 /* Duplicate CCB received */
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#define AHA_INV_CCB 0x1a /* Invalid CCB or segment list */
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#define AHA_ABORTED 42
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struct aha_setup
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{
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u_char sync_neg:1;
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u_char parity:1;
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u_char :6;
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u_char speed;
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u_char bus_on;
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u_char bus_off;
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u_char num_mbx;
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u_char mbx[3];
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struct
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{
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u_char offset:4;
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u_char period:3;
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u_char valid:1;
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}sync[8];
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u_char disc_sts;
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};
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struct aha_config
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{
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u_char chan;
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u_char intr;
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u_char scsi_dev:3;
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u_char :5;
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};
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struct aha_inquire
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{
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u_char boardid; /* type of board */
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/* 0x20 = BusLogic 545, but it gets
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the command wrong, only returns
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one byte */
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/* 0x31 = AHA-1540 */
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/* 0x41 = AHA-1540A/1542A/1542B */
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/* 0x42 = AHA-1640 */
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/* 0x43 = AHA-1542C */
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/* 0x44 = AHA-1542CF */
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u_char spec_opts; /* special options ID */
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/* 0x41 = Board is standard model */
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u_char revision_1; /* firmware revision [0-9A-Z] */
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u_char revision_2; /* firmware revision [0-9A-Z] */
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};
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struct aha_extbios
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{
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u_char flags; /* Bit 3 == 1 extended bios enabled */
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u_char mailboxlock; /* mail box lock code to unlock it */
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};
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#define INT9 0x01
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#define INT10 0x02
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#define INT11 0x04
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#define INT12 0x08
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#define INT14 0x20
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#define INT15 0x40
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#define CHAN0 0x01
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#define CHAN5 0x20
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#define CHAN6 0x40
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#define CHAN7 0x80
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/*********************************** end of board definitions***************/
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#ifdef MACH
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#define PHYSTOKV(x) phystokv(x)
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#define KVTOPHYS(x) kvtophys(x)
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#else MACH
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#ifdef __386BSD__
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#define KVTOPHYS(x) vtophys(x)
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#else __386BSD__
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#endif __386BSD__
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#endif MACH
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#define AHA_DMA_PAGES AHA_NSEG
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#define PAGESIZ 4096
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#define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); }
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u_char aha_scratch_buf[256];
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#ifdef MACH
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caddr_t aha_base[NAHA]; /* base port for each board */
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#else
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short aha_base[NAHA]; /* base port for each board */
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#endif
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struct aha_mbx aha_mbx[NAHA];
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struct aha_ccb *aha_ccb_free[NAHA];
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struct aha_ccb aha_ccb[NAHA][AHA_MBX_SIZE];
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struct scsi_xfer aha_scsi_xfer[NAHA];
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struct isa_dev *ahainfo[NAHA];
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struct aha_ccb *aha_get_ccb();
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int aha_int[NAHA];
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int aha_dma[NAHA];
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int aha_scsi_dev[NAHA];
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int aha_initialized[NAHA];
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#ifdef OSF
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int aha_attached[NAHA];
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#endif OSF
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#ifdef AHADEBUG
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int aha_debug = 1;
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#endif /*AHADEBUG*/
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int ahaprobe(), ahaattach(), ahaintr();
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#ifdef MACH
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struct isa_driver ahadriver = { ahaprobe, 0, ahaattach, "aha", 0, 0, 0};
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int (*ahaintrs[])() = {ahaintr, 0};
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#endif
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#ifdef __386BSD__
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struct isa_driver ahadriver = { ahaprobe, ahaattach, "aha",};
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#endif __386BSD__
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static int ahaunit = 0;
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#define aha_abortmbx(mbx) \
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(mbx)->cmd = AHA_MBO_ABORT; \
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outb(AHA_CMD_DATA_PORT, AHA_START_SCSI);
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#define aha_startmbx(mbx) \
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(mbx)->cmd = AHA_MBO_START; \
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outb(AHA_CMD_DATA_PORT, AHA_START_SCSI);
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int aha_scsi_cmd();
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int aha_timeout();
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void ahaminphys();
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long int aha_adapter_info();
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struct scsi_switch aha_switch =
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{
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aha_scsi_cmd,
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ahaminphys,
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0,
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0,
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aha_adapter_info,
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"aha",
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0,0
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};
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#define AHA_CMD_TIMEOUT_FUDGE 200 /* multiplied to get Secs */
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#define AHA_RESET_TIMEOUT 1000000 /* time to wait for reset */
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#define AHA_SCSI_TIMEOUT_FUDGE 20 /* divided by for mSecs */
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/***********************************************************************\
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* aha_cmd(unit,icnt, ocnt,wait, retval, opcode, args) *
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* Activate Adapter command *
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* icnt: number of args (outbound bytes written after opcode) *
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* ocnt: number of expected returned bytes *
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* wait: number of seconds to wait for response *
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* retval: buffer where to place returned bytes *
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* opcode: opcode AHA_NOP, AHA_MBX_INIT, AHA_START_SCSI ... *
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* args: parameters *
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* *
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* Performs an adapter command through the ports. Not to be confused *
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* with a scsi command, which is read in via the dma *
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* One of the adapter commands tells it to read in a scsi command *
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\***********************************************************************/
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aha_cmd(unit,icnt, ocnt, wait,retval, opcode, args)
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u_char *retval;
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unsigned opcode;
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u_char args;
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{
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unsigned *ic = &opcode;
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u_char oc;
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register i;
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int sts;
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/*******************************************************\
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* multiply the wait argument by a big constant *
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* zero defaults to 1 *
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\*******************************************************/
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if(!wait)
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wait = AHA_CMD_TIMEOUT_FUDGE * delaycount;
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else
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wait *= AHA_CMD_TIMEOUT_FUDGE * delaycount;
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/*******************************************************\
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* Wait for the adapter to go idle, unless it's one of *
|
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* the commands which don't need this *
|
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\*******************************************************/
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if (opcode != AHA_MBX_INIT && opcode != AHA_START_SCSI)
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{
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i = AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec?*/
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while (--i)
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{
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sts = inb(AHA_CTRL_STAT_PORT);
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if (sts & AHA_IDLE)
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{
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break;
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}
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}
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if (!i)
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{
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printf("aha%d: aha_cmd, host not idle(0x%x)\n",
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unit,sts);
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return(ENXIO);
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}
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}
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/*******************************************************\
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|
* Now that it is idle, if we expect output, preflush the*
|
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* queue feeding to us. *
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\*******************************************************/
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if (ocnt)
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{
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while((inb(AHA_CTRL_STAT_PORT)) & AHA_DF)
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inb(AHA_CMD_DATA_PORT);
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}
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/*******************************************************\
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* Output the command and the number of arguments given *
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* for each byte, first check the port is empty. *
|
|
\*******************************************************/
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icnt++; /* include the command */
|
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while (icnt--)
|
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{
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sts = inb(AHA_CTRL_STAT_PORT);
|
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for (i=0; i< wait; i++)
|
|
{
|
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sts = inb(AHA_CTRL_STAT_PORT);
|
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if (!(sts & AHA_CDF))
|
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break;
|
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}
|
|
if (i >= wait)
|
|
{
|
|
printf("aha%d: aha_cmd, cmd/data port full\n",unit);
|
|
outb(AHA_CTRL_STAT_PORT, AHA_SRST);
|
|
return(ENXIO);
|
|
}
|
|
outb(AHA_CMD_DATA_PORT, (u_char)(*ic++));
|
|
}
|
|
/*******************************************************\
|
|
* If we expect input, loop that many times, each time, *
|
|
* looking for the data register to have valid data *
|
|
\*******************************************************/
|
|
while (ocnt--)
|
|
{
|
|
sts = inb(AHA_CTRL_STAT_PORT);
|
|
for (i=0; i< wait; i++)
|
|
{
|
|
sts = inb(AHA_CTRL_STAT_PORT);
|
|
if (sts & AHA_DF)
|
|
break;
|
|
}
|
|
if (i >= wait)
|
|
{
|
|
printf("aha%d: aha_cmd, cmd/data port empty %d\n",
|
|
unit,ocnt);
|
|
return(ENXIO);
|
|
}
|
|
oc = inb(AHA_CMD_DATA_PORT);
|
|
if (retval)
|
|
*retval++ = oc;
|
|
}
|
|
/*******************************************************\
|
|
* Wait for the board to report a finised instruction *
|
|
\*******************************************************/
|
|
i=AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec? */
|
|
while (--i)
|
|
{
|
|
sts = inb(AHA_INTR_PORT);
|
|
if (sts & AHA_HACC)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if (!i)
|
|
{
|
|
printf("aha%d: aha_cmd, host not finished(0x%x)\n",unit,sts);
|
|
return(ENXIO);
|
|
}
|
|
outb(AHA_CTRL_STAT_PORT, AHA_IRST);
|
|
return(0);
|
|
}
|
|
|
|
/*******************************************************\
|
|
* Check if the device can be found at the port given *
|
|
* and if so, set it up ready for further work *
|
|
* as an argument, takes the isa_dev structure from *
|
|
* autoconf.c *
|
|
\*******************************************************/
|
|
ahaprobe(dev)
|
|
struct isa_dev *dev;
|
|
{
|
|
int unit = ahaunit;
|
|
#if defined(OSF)
|
|
static ihandler_t aha_handler[NAHA];
|
|
static ihandler_id_t *aha_handler_id[NAHA];
|
|
register ihandler_t *chp = &aha_handler[unit];;
|
|
#endif /* defined(OSF) */
|
|
|
|
/***********************************************\
|
|
* find unit and check we have that many defined *
|
|
\***********************************************/
|
|
dev->dev_unit = unit;
|
|
aha_base[unit] = dev->dev_addr;
|
|
if(unit >= NAHA)
|
|
{
|
|
printf("aha%d: unit number too high\n",unit);
|
|
return(0);
|
|
}
|
|
/***********************************************\
|
|
* Try initialise a unit at this location *
|
|
* sets up dma and bus speed, loads aha_int[unit]*
|
|
\***********************************************/
|
|
if (aha_init(unit) != 0)
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/***********************************************\
|
|
* If it's there, put in it's interrupt vectors *
|
|
\***********************************************/
|
|
#if !defined(OSF)
|
|
#if defined MACH
|
|
iunit[aha_int[unit]] =unit;
|
|
ivect[aha_int[unit]] = ahaintr;
|
|
intpri[aha_int[unit]] = dev->dev_spl;
|
|
form_pic_mask();
|
|
/*take_dev_irq(dev);*/
|
|
#else
|
|
#ifdef __386BSD__
|
|
dev->id_irq = (1 << aha_int[unit]);
|
|
dev->id_drq = aha_dma[unit];
|
|
#endif __386BSD__
|
|
#endif
|
|
#else /* !defined(OSF) */
|
|
|
|
dev->dev_pic = aha_dma[unit];
|
|
chp->ih_level = dev->dev_pic;
|
|
chp->ih_handler = dev->dev_intr[0];
|
|
chp->ih_resolver = i386_resolver;
|
|
chp->ih_rdev = dev;
|
|
chp->ih_stats.intr_type = INTR_DEVICE;
|
|
chp->ih_stats.intr_cnt = 0;
|
|
chp->ih_hparam[0].intparam = unit;
|
|
if ((aha_handler_id[unit] = handler_add(chp)) != NULL)
|
|
handler_enable(aha_handler_id[unit]);
|
|
else
|
|
panic("Unable to add aha interrupt handler");
|
|
#endif /* !defined(OSF) */
|
|
#ifndef __386BSD__
|
|
printf("port=%x spl=%d\n", dev->dev_addr, dev->dev_spl);
|
|
#endif __386BSD__
|
|
ahaunit ++;
|
|
return(1);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Attach all the sub-devices we can find *
|
|
\***********************************************/
|
|
ahaattach(dev)
|
|
struct isa_dev *dev;
|
|
{
|
|
int unit = dev->dev_unit;
|
|
|
|
/***********************************************\
|
|
* ask the adapter what subunits are present *
|
|
\***********************************************/
|
|
scsi_attachdevs( unit, aha_scsi_dev[unit], &aha_switch);
|
|
#if defined(OSF)
|
|
aha_attached[unit]=1;
|
|
#endif /* defined(OSF) */
|
|
return;
|
|
}
|
|
|
|
/***********************************************\
|
|
* Return some information to the caller about *
|
|
* the adapter and it's capabilities *
|
|
\***********************************************/
|
|
long int aha_adapter_info(unit)
|
|
int unit;
|
|
{
|
|
return(2); /* 2 outstanding requests at a time per device */
|
|
}
|
|
|
|
/***********************************************\
|
|
* Catch an interrupt from the adaptor *
|
|
\***********************************************/
|
|
ahaintr(unit)
|
|
{
|
|
struct aha_ccb *ccb;
|
|
unsigned char stat;
|
|
register i;
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ahaintr ");
|
|
#endif /*AHADEBUG*/
|
|
/***********************************************\
|
|
* First acknowlege the interrupt, Then if it's *
|
|
* not telling about a completed operation *
|
|
* just return. *
|
|
\***********************************************/
|
|
stat = inb(AHA_INTR_PORT);
|
|
outb(AHA_CTRL_STAT_PORT, AHA_IRST);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("int ");
|
|
#endif /*AHADEBUG*/
|
|
if (! (stat & AHA_MBIF))
|
|
return(1);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("b ");
|
|
#endif /*AHADEBUG*/
|
|
#if defined(OSF)
|
|
if (!aha_attached[unit])
|
|
{
|
|
return(1);
|
|
}
|
|
#endif /* defined(OSF) */
|
|
/***********************************************\
|
|
* If it IS then process the competed operation *
|
|
\***********************************************/
|
|
for (i = 0; i < AHA_MBX_SIZE; i++)
|
|
{
|
|
if (aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE)
|
|
{
|
|
ccb = (struct aha_ccb *)PHYSTOKV(
|
|
(_3btol(aha_mbx[unit].mbi[i].ccb_addr)));
|
|
|
|
if((stat = aha_mbx[unit].mbi[i].stat) != AHA_MBI_OK)
|
|
{
|
|
switch(stat)
|
|
{
|
|
case AHA_MBI_ABORT:
|
|
#ifdef AHADEBUG
|
|
if(aha_debug)
|
|
printf("abort");
|
|
#endif /*AHADEBUG*/
|
|
ccb->host_stat = AHA_ABORTED;
|
|
break;
|
|
|
|
case AHA_MBI_UNKNOWN:
|
|
ccb = (struct aha_ccb *)0;
|
|
#ifdef AHADEBUG
|
|
if(aha_debug)
|
|
printf("unknown ccb for abort ");
|
|
#endif /*AHADEBUG*/
|
|
/* may have missed it */
|
|
/* no such ccb known for abort */
|
|
|
|
case AHA_MBI_ERROR:
|
|
break;
|
|
|
|
default:
|
|
panic("Impossible mbxi status");
|
|
|
|
}
|
|
#ifdef AHADEBUG
|
|
if( aha_debug && ccb )
|
|
{
|
|
u_char *cp;
|
|
cp = (u_char *)(&(ccb->scsi_cmd));
|
|
printf("op=%x %x %x %x %x %x\n",
|
|
cp[0], cp[1], cp[2],
|
|
cp[3], cp[4], cp[5]);
|
|
printf("stat %x for mbi[%d]\n"
|
|
, aha_mbx[unit].mbi[i].stat, i);
|
|
printf("addr = 0x%x\n", ccb);
|
|
}
|
|
#endif /*AHADEBUG*/
|
|
}
|
|
if(ccb)
|
|
{
|
|
untimeout(aha_timeout,ccb);
|
|
aha_done(unit,ccb);
|
|
}
|
|
aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE;
|
|
}
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
/***********************************************\
|
|
* A ccb (and hence a mbx-out is put onto the *
|
|
* free list. *
|
|
\***********************************************/
|
|
aha_free_ccb(unit,ccb, flags)
|
|
struct aha_ccb *ccb;
|
|
{
|
|
unsigned int opri;
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ccb%d(0x%x)> ",unit,flags);
|
|
#endif /*AHADEBUG*/
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
ccb->next = aha_ccb_free[unit];
|
|
aha_ccb_free[unit] = ccb;
|
|
ccb->flags = CCB_FREE;
|
|
/***********************************************\
|
|
* If there were none, wake abybody waiting for *
|
|
* one to come free, starting with queued entries*
|
|
\***********************************************/
|
|
if (!ccb->next) {
|
|
wakeup(&aha_ccb_free[unit]);
|
|
}
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Get a free ccb (and hence mbox-out entry) *
|
|
\***********************************************/
|
|
struct aha_ccb *
|
|
aha_get_ccb(unit,flags)
|
|
{
|
|
unsigned opri;
|
|
struct aha_ccb *rc;
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("<ccb%d(0x%x) ",unit,flags);
|
|
#endif /*AHADEBUG*/
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
/***********************************************\
|
|
* If we can and have to, sleep waiting for one *
|
|
* to come free *
|
|
\***********************************************/
|
|
while ((!(rc = aha_ccb_free[unit])) && (!(flags & SCSI_NOSLEEP)))
|
|
{
|
|
sleep(&aha_ccb_free[unit], PRIBIO);
|
|
}
|
|
if (rc)
|
|
{
|
|
aha_ccb_free[unit] = aha_ccb_free[unit]->next;
|
|
rc->flags = CCB_ACTIVE;
|
|
}
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
return(rc);
|
|
}
|
|
|
|
|
|
/***********************************************\
|
|
* We have a ccb which has been processed by the *
|
|
* adaptor, now we look to see how the operation *
|
|
* went. Wake up the owner if waiting *
|
|
\***********************************************/
|
|
aha_done(unit,ccb)
|
|
struct aha_ccb *ccb;
|
|
{
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct scsi_xfer *xs = ccb->xfer;
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & PRINTROUTINES )
|
|
printf("aha_done ");
|
|
#endif /*AHADEBUG*/
|
|
/***********************************************\
|
|
* Otherwise, put the results of the operation *
|
|
* into the xfer and call whoever started it *
|
|
\***********************************************/
|
|
if(!(xs->flags & INUSE))
|
|
{
|
|
printf("aha%d: exiting but not in use!\n",unit);
|
|
Debugger();
|
|
}
|
|
if ( ( ccb->host_stat != AHA_OK
|
|
|| ccb->target_stat != SCSI_OK)
|
|
&& (!(xs->flags & SCSI_ERR_OK)))
|
|
{
|
|
s1 = (struct scsi_sense_data *)(((char *)(&ccb->scsi_cmd))
|
|
+ ccb->scsi_cmd_length);
|
|
s2 = &(xs->sense);
|
|
|
|
if(ccb->host_stat)
|
|
{
|
|
switch(ccb->host_stat)
|
|
{
|
|
case AHA_ABORTED:
|
|
case AHA_SEL_TIMEOUT: /* No response */
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
default: /* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
#ifdef AHADEBUG
|
|
if (aha_debug > 1)
|
|
{
|
|
printf("host_stat%x\n",
|
|
ccb->host_stat);
|
|
}
|
|
#endif /*AHADEBUG*/
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
switch(ccb->target_stat)
|
|
{
|
|
case 0x02:
|
|
/* structure copy!!!!!*/
|
|
*s2=*s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case 0x08:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
#ifdef AHADEBUG
|
|
if (aha_debug > 1)
|
|
{
|
|
printf("target_stat%x\n",
|
|
ccb->target_stat);
|
|
}
|
|
#endif /*AHADEBUG*/
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
}
|
|
}
|
|
else /* All went correctly OR errors expected */
|
|
{
|
|
xs->resid = 0;
|
|
}
|
|
xs->flags |= ITSDONE;
|
|
aha_free_ccb(unit,ccb, xs->flags);
|
|
if(xs->when_done)
|
|
(*(xs->when_done))(xs->done_arg,xs->done_arg2);
|
|
}
|
|
|
|
|
|
/***********************************************\
|
|
* Start the board, ready for normal operation *
|
|
\***********************************************/
|
|
aha_init(unit)
|
|
int unit;
|
|
{
|
|
unsigned char ad[3];
|
|
volatile int i,sts;
|
|
struct aha_config conf;
|
|
struct aha_inquire inquire;
|
|
struct aha_extbios extbios;
|
|
|
|
/***********************************************\
|
|
* reset board, If it doesn't respond, assume *
|
|
* that it's not there.. good for the probe *
|
|
\***********************************************/
|
|
|
|
outb(AHA_CTRL_STAT_PORT, AHA_HRST|AHA_SRST);
|
|
|
|
for (i=0; i < AHA_RESET_TIMEOUT; i++)
|
|
{
|
|
sts = inb(AHA_CTRL_STAT_PORT) ;
|
|
if ( sts == (AHA_IDLE | AHA_INIT))
|
|
break;
|
|
}
|
|
if (i >= AHA_RESET_TIMEOUT)
|
|
{
|
|
#ifdef AHADEBUG
|
|
if (aha_debug)
|
|
printf("aha_init: No answer from adaptec board\n");
|
|
#endif /*AHADEBUG*/
|
|
return(ENXIO);
|
|
}
|
|
/*
|
|
* Assume we have a board at this stage, do an adapter inquire
|
|
* to find out what type of controller it is
|
|
*/
|
|
aha_cmd(unit, 0, sizeof(inquire), 1 ,&inquire, AHA_INQUIRE);
|
|
#ifdef AHADEBUG
|
|
printf("aha%d: inquire %x, %x, %x, %x\n",
|
|
unit,
|
|
inquire.boardid, inquire.spec_opts,
|
|
inquire.revision_1, inquire.revision_2);
|
|
#endif /* AHADEBUG */
|
|
/*
|
|
* XXX The Buslogic 545S gets the AHA_INQUIRE command wrong,
|
|
* they only return one byte which causes us to print an error,
|
|
* so if the boardid comes back as 0x20, tell the user why they
|
|
* get the "cmd/data port empty" message
|
|
*/
|
|
if (inquire.boardid == 0x20) {
|
|
/* looks like a Buslogic 545 */
|
|
printf ("aha%d: above cmd/data port empty do to Buslogic 545\n",
|
|
unit);
|
|
}
|
|
/*
|
|
* If we are a 1542C or 1542CF disable the extended bios so that the
|
|
* mailbox interface is unlocked.
|
|
* No need to check the extended bios flags as some of the
|
|
* extensions that cause us problems are not flagged in that byte.
|
|
*/
|
|
if ((inquire.boardid == 0x43) || (inquire.boardid == 0x44)) {
|
|
aha_cmd(unit, 0, sizeof(extbios), 0, &extbios, AHA_EXT_BIOS);
|
|
#ifdef AHADEBUG
|
|
printf("aha%d: extended bios flags %x\n", unit, extbios.flags);
|
|
#endif /* AHADEBUG */
|
|
printf("aha%d: 1542C/CF detected, unlocking mailbox\n");
|
|
aha_cmd(unit, 2, 0, 0, 0, AHA_MBX_ENABLE,
|
|
0, extbios.mailboxlock);
|
|
}
|
|
/***********************************************\
|
|
* Setup dma channel from jumpers and save int *
|
|
* level *
|
|
\***********************************************/
|
|
#ifdef __386BSD__
|
|
printf("aha%d: reading board settings, ",unit);
|
|
#define PRNT(x) printf(x)
|
|
#else __386BSD__
|
|
printf("aha%d:",unit);
|
|
#define PRNT(x) printf(x)
|
|
#endif __386BSD__
|
|
DELAY(10000); /* for Bustek 545 */
|
|
aha_cmd(unit,0, sizeof(conf), 0 ,&conf, AHA_CONF_GET);
|
|
switch(conf.chan)
|
|
{
|
|
case CHAN0:
|
|
outb(0x0b, 0x0c);
|
|
outb(0x0a, 0x00);
|
|
aha_dma[unit] = 0;
|
|
PRNT("dma=0 ");
|
|
break;
|
|
case CHAN5:
|
|
outb(0xd6, 0xc1);
|
|
outb(0xd4, 0x01);
|
|
aha_dma[unit] = 5;
|
|
PRNT("dma=5 ");
|
|
break;
|
|
case CHAN6:
|
|
outb(0xd6, 0xc2);
|
|
outb(0xd4, 0x02);
|
|
aha_dma[unit] = 6;
|
|
PRNT("dma=6 ");
|
|
break;
|
|
case CHAN7:
|
|
outb(0xd6, 0xc3);
|
|
outb(0xd4, 0x03);
|
|
aha_dma[unit] = 7;
|
|
PRNT("dma=7 ");
|
|
break;
|
|
default:
|
|
printf("illegal dma jumper setting\n");
|
|
return(EIO);
|
|
}
|
|
switch(conf.intr)
|
|
{
|
|
case INT9:
|
|
aha_int[unit] = 9;
|
|
PRNT("int=9 ");
|
|
break;
|
|
case INT10:
|
|
aha_int[unit] = 10;
|
|
PRNT("int=10 ");
|
|
break;
|
|
case INT11:
|
|
aha_int[unit] = 11;
|
|
PRNT("int=11 ");
|
|
break;
|
|
case INT12:
|
|
aha_int[unit] = 12;
|
|
PRNT("int=12 ");
|
|
break;
|
|
case INT14:
|
|
aha_int[unit] = 14;
|
|
PRNT("int=14 ");
|
|
break;
|
|
case INT15:
|
|
aha_int[unit] = 15;
|
|
PRNT("int=15 ");
|
|
break;
|
|
default:
|
|
printf("illegal int jumper setting\n");
|
|
return(EIO);
|
|
}
|
|
/* who are we on the scsi bus */
|
|
aha_scsi_dev[unit] = conf.scsi_dev;
|
|
|
|
|
|
/***********************************************\
|
|
* Initialize memory transfer speed *
|
|
\***********************************************/
|
|
/*
|
|
* XXX This code seems to BREAK more boards than it makes
|
|
* work right, we are just going to NOP this here...
|
|
*/
|
|
#if 0
|
|
if(!(aha_set_bus_speed(unit)))
|
|
{
|
|
return(EIO);
|
|
}
|
|
#else
|
|
printf ("\n");
|
|
#endif
|
|
|
|
|
|
/***********************************************\
|
|
* Initialize mail box *
|
|
\***********************************************/
|
|
|
|
lto3b(KVTOPHYS(&aha_mbx[unit]), ad);
|
|
|
|
aha_cmd(unit,4, 0, 0, 0, AHA_MBX_INIT,
|
|
AHA_MBX_SIZE,
|
|
ad[0],
|
|
ad[1],
|
|
ad[2]);
|
|
|
|
|
|
/***********************************************\
|
|
* link the ccb's with the mbox-out entries and *
|
|
* into a free-list *
|
|
\***********************************************/
|
|
for (i=0; i < AHA_MBX_SIZE; i++) {
|
|
aha_ccb[unit][i].next = aha_ccb_free[unit];
|
|
aha_ccb_free[unit] = &aha_ccb[unit][i];
|
|
aha_ccb_free[unit]->flags = CCB_FREE;
|
|
aha_ccb_free[unit]->mbx = &aha_mbx[unit].mbo[i];
|
|
lto3b(KVTOPHYS(aha_ccb_free[unit]), aha_mbx[unit].mbo[i].ccb_addr);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Note that we are going and return (to probe) *
|
|
\***********************************************/
|
|
aha_initialized[unit]++;
|
|
return(0);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void ahaminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
#ifdef MACH
|
|
#if !defined(OSF)
|
|
bp->b_flags |= B_NPAGES; /* can support scat/gather */
|
|
#endif /* !defined(OSF) */
|
|
#endif MACH
|
|
/* aha seems to explode with 17 segs (64k may require 17 segs) */
|
|
/* on old boards so use a max of 16 segs if you have problems here*/
|
|
if(bp->b_bcount > ((AHA_NSEG - 1) * PAGESIZ))
|
|
{
|
|
bp->b_bcount = ((AHA_NSEG - 1) * PAGESIZ);
|
|
}
|
|
}
|
|
|
|
/***********************************************\
|
|
* start a scsi operation given the command and *
|
|
* the data address. Also needs the unit, target *
|
|
* and lu *
|
|
\***********************************************/
|
|
int aha_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct aha_ccb *ccb;
|
|
struct aha_scat_gath *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int i = 0;
|
|
int rc = 0;
|
|
int thiskv;
|
|
int thisphys,nextphys;
|
|
int unit =xs->adapter;
|
|
int bytes_this_seg,bytes_this_page,datalen,flags;
|
|
struct iovec *iovp;
|
|
int s;
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("aha_scsi_cmd ");
|
|
#endif /*AHADEBUG*/
|
|
/***********************************************\
|
|
* get a ccb (mbox-out) to use. If the transfer *
|
|
* is from a buf (possibly from interrupt time) *
|
|
* then we can't allow it to sleep *
|
|
\***********************************************/
|
|
flags = xs->flags;
|
|
if(!(flags & INUSE))
|
|
{
|
|
printf("aha%d: not in use!\n",unit);
|
|
Debugger();
|
|
xs->flags |= INUSE;
|
|
}
|
|
if(flags & ITSDONE)
|
|
{
|
|
printf("aha%d: Already done! check device retry code\n",unit);
|
|
Debugger();
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */
|
|
if (!(ccb = aha_get_ccb(unit,flags)))
|
|
{
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(TRY_AGAIN_LATER);
|
|
}
|
|
|
|
if (ccb->mbx->cmd != AHA_MBO_FREE)
|
|
printf("aha%d: MBO not free\n",unit);
|
|
|
|
/***********************************************\
|
|
* Put all the arguments for the xfer in the ccb *
|
|
\***********************************************/
|
|
ccb->xfer = xs;
|
|
if(flags & SCSI_RESET)
|
|
{
|
|
ccb->opcode = AHA_RESET_CCB;
|
|
}
|
|
else
|
|
{
|
|
/* can't use S/G if zero length */
|
|
ccb->opcode = (xs->datalen?
|
|
AHA_INIT_SCAT_GATH_CCB
|
|
:AHA_INITIATOR_CCB);
|
|
}
|
|
ccb->target = xs->targ;;
|
|
ccb->data_out = 0;
|
|
ccb->data_in = 0;
|
|
ccb->lun = xs->lu;
|
|
ccb->scsi_cmd_length = xs->cmdlen;
|
|
ccb->req_sense_length = sizeof(ccb->scsi_sense);
|
|
|
|
if((xs->datalen) && (!(flags & SCSI_RESET)))
|
|
{ /* can use S/G only if not zero length */
|
|
lto3b(KVTOPHYS(ccb->scat_gath), ccb->data_addr );
|
|
sg = ccb->scat_gath ;
|
|
seg = 0;
|
|
if(flags & SCSI_DATA_UIO)
|
|
{
|
|
iovp = ((struct uio *)xs->data)->uio_iov;
|
|
datalen = ((struct uio *)xs->data)->uio_iovcnt;
|
|
while ((datalen) && (seg < AHA_NSEG))
|
|
{
|
|
lto3b(iovp->iov_base,&(sg->seg_addr));
|
|
lto3b(iovp->iov_len,&(sg->seg_len));
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x@0x%x)"
|
|
,iovp->iov_len
|
|
,iovp->iov_base);
|
|
#endif /*AHADEBUG*/
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/***********************************************\
|
|
* Set up the scatter gather block *
|
|
\***********************************************/
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("%d @0x%x:- ",xs->datalen,xs->data);
|
|
#endif /*AHADEBUG*/
|
|
datalen = xs->datalen;
|
|
thiskv = (int)xs->data;
|
|
thisphys = KVTOPHYS(thiskv);
|
|
|
|
while ((datalen) && (seg < AHA_NSEG))
|
|
{
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
lto3b(thisphys,&(sg->seg_addr));
|
|
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("0x%x",thisphys);
|
|
#endif /*AHADEBUG*/
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while ((datalen) && (thisphys == nextphys))
|
|
/***************************************\
|
|
* This page is contiguous (physically) *
|
|
* with the the last, just extend the *
|
|
* length *
|
|
\***************************************/
|
|
{
|
|
/** how far to the end of the page ***/
|
|
nextphys = (thisphys & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
bytes_this_page = nextphys - thisphys;
|
|
/**** or the data ****/
|
|
bytes_this_page = min(bytes_this_page
|
|
,datalen);
|
|
bytes_this_seg += bytes_this_page;
|
|
datalen -= bytes_this_page;
|
|
|
|
/**** get more ready for the next page ****/
|
|
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
if(datalen)
|
|
thisphys = KVTOPHYS(thiskv);
|
|
}
|
|
/***************************************\
|
|
* next page isn't contiguous, finish the seg*
|
|
\***************************************/
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x)",bytes_this_seg);
|
|
#endif /*AHADEBUG*/
|
|
lto3b(bytes_this_seg,&(sg->seg_len));
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
lto3b(seg * sizeof(struct aha_scat_gath),ccb->data_length);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("\n");
|
|
#endif /*AHADEBUG*/
|
|
if (datalen)
|
|
{ /* there's still data, must have run out of segs! */
|
|
printf("aha%d: aha_scsi_cmd, more than %d DMA segs\n",
|
|
unit,AHA_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
aha_free_ccb(unit,ccb,flags);
|
|
return(HAD_ERROR);
|
|
}
|
|
|
|
}
|
|
else
|
|
{ /* No data xfer, use non S/G values */
|
|
lto3b(0, ccb->data_addr );
|
|
lto3b(0,ccb->data_length);
|
|
}
|
|
lto3b(0, ccb->link_addr );
|
|
/***********************************************\
|
|
* Put the scsi command in the ccb and start it *
|
|
\***********************************************/
|
|
if(!(flags & SCSI_RESET))
|
|
bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & SHOWCOMMANDS)
|
|
{
|
|
u_char *b = (u_char *)&ccb->scsi_cmd;
|
|
if(!(flags & SCSI_RESET))
|
|
{
|
|
int i = 0;
|
|
printf("aha%d:%d:%d-"
|
|
,unit
|
|
,ccb->target
|
|
,ccb->lun );
|
|
while(i < ccb->scsi_cmd_length )
|
|
{
|
|
if(i) printf(",");
|
|
printf("%x",b[i++]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
printf("aha%d:%d:%d-RESET- "
|
|
,unit
|
|
,ccb->target
|
|
,ccb->lun
|
|
);
|
|
}
|
|
}
|
|
#endif /*AHADEBUG*/
|
|
if (!(flags & SCSI_NOMASK))
|
|
{
|
|
s= splbio(); /* stop instant timeouts */
|
|
timeout(aha_timeout,ccb,(xs->timeout * hz) / 1000);
|
|
aha_startmbx(ccb->mbx);
|
|
/***********************************************\
|
|
* Usually return SUCCESSFULLY QUEUED *
|
|
\***********************************************/
|
|
splx(s);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("sent ");
|
|
#endif /*AHADEBUG*/
|
|
return(SUCCESSFULLY_QUEUED);
|
|
}
|
|
aha_startmbx(ccb->mbx);
|
|
#ifdef AHADEBUG
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_sent, waiting ");
|
|
#endif /*AHADEBUG*/
|
|
/***********************************************\
|
|
* If we can't use interrupts, poll on completion*
|
|
\***********************************************/
|
|
{
|
|
int done = 0;
|
|
int count = delaycount * xs->timeout / AHA_SCSI_TIMEOUT_FUDGE;
|
|
while((!done) && count)
|
|
{
|
|
i=0;
|
|
while ( (!done) && i<AHA_MBX_SIZE)
|
|
{
|
|
if ((aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE )
|
|
&& (PHYSTOKV(_3btol(aha_mbx[unit].mbi[i].ccb_addr)
|
|
== (int)ccb)))
|
|
{
|
|
aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE;
|
|
aha_done(unit,ccb);
|
|
done++;
|
|
}
|
|
i++;
|
|
}
|
|
count--;
|
|
}
|
|
if (!count)
|
|
{
|
|
if (!(xs->flags & SCSI_SILENT))
|
|
printf("aha%d: cmd fail\n",unit);
|
|
aha_abortmbx(ccb->mbx);
|
|
count = delaycount * 2000 / AHA_SCSI_TIMEOUT_FUDGE;
|
|
while((!done) && count)
|
|
{
|
|
i=0;
|
|
while ( (!done) && i<AHA_MBX_SIZE)
|
|
{
|
|
if ((aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE )
|
|
&& (PHYSTOKV(_3btol(aha_mbx[unit].mbi[i].ccb_addr)
|
|
== (int)ccb)))
|
|
{
|
|
aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE;
|
|
aha_done(unit,ccb);
|
|
done++;
|
|
}
|
|
i++;
|
|
}
|
|
count--;
|
|
}
|
|
if(!count)
|
|
{
|
|
printf("aha%d: abort failed in wait\n",unit);
|
|
ccb->mbx->cmd = AHA_MBO_FREE;
|
|
}
|
|
aha_free_ccb(unit,ccb,flags);
|
|
ahaintr(unit);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(HAD_ERROR);
|
|
}
|
|
ahaintr(unit);
|
|
if(xs->error) return(HAD_ERROR);
|
|
return(COMPLETE);
|
|
|
|
}
|
|
}
|
|
/***************************************************************\
|
|
* try each speed in turn, when we find one that works, use *
|
|
* the NEXT one for a safety margin, unless that doesn't exist *
|
|
* or doesn't work. returns the nSEC value of the time used *
|
|
* or 0 if it could get a working speed ( or the NEXT speed *
|
|
* failed) *
|
|
\***************************************************************/
|
|
|
|
int aha_set_bus_speed(unit)
|
|
int unit;
|
|
{
|
|
int speed;
|
|
int retval,retval2;
|
|
|
|
#ifdef EISA
|
|
speed = 0; /* start at the fastest */
|
|
#else EISA
|
|
speed = 1; /* 100 ns can crash some ISA busses (!?!) */
|
|
#endif EISA
|
|
while (1)
|
|
{
|
|
retval = aha_bus_speed_check(unit,speed);
|
|
if(retval == HAD_ERROR)
|
|
{
|
|
printf("no working bus speed!!!\n");
|
|
return(0);
|
|
}
|
|
if(retval == 0)
|
|
{
|
|
speed++;
|
|
}
|
|
else /* Go one slower to be safe */
|
|
{ /* unless eisa at 100 ns.. trust it */
|
|
if(speed != 0)
|
|
{
|
|
speed++;
|
|
}
|
|
printf("%d nSEC ok, using ",retval);
|
|
retval2 = aha_bus_speed_check(unit,speed);
|
|
if(retval2 == HAD_ERROR) /* retval is slowest already */
|
|
{
|
|
printf("marginal ");
|
|
retval2 = retval;
|
|
}
|
|
if(retval2)
|
|
{
|
|
printf("%d nSEC\n",retval2);
|
|
return(retval2);
|
|
}
|
|
else
|
|
{
|
|
printf(".. slower failed, abort\n",retval);
|
|
return(0);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/***************************************************************\
|
|
* Set the DMA speed to the Nth speed and try an xfer. If it *
|
|
* fails return 0, if it succeeds return the nSec value selected *
|
|
* If there is no such speed return HAD_ERROR. *
|
|
\***************************************************************/
|
|
static struct bus_speed
|
|
{
|
|
char arg;
|
|
int nsecs;
|
|
}aha_bus_speeds[] =
|
|
{
|
|
{0x88,100},
|
|
{0x99,150},
|
|
{0xaa,200},
|
|
{0xbb,250},
|
|
{0xcc,300},
|
|
{0xdd,350},
|
|
{0xee,400},
|
|
{0xff,450}
|
|
};
|
|
static char aha_test_string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz!@";
|
|
|
|
int aha_bus_speed_check(unit,speed)
|
|
int unit,speed;
|
|
{
|
|
int numspeeds = sizeof(aha_bus_speeds)/sizeof(struct bus_speed);
|
|
u_char ad[3];
|
|
|
|
/*******************************************************\
|
|
* Check we have such an entry *
|
|
\*******************************************************/
|
|
if(speed >= numspeeds) return(HAD_ERROR); /* illegal speed */
|
|
|
|
/*******************************************************\
|
|
* Set the dma-speed *
|
|
\*******************************************************/
|
|
aha_cmd(unit,1, 0, 0, 0, AHA_SPEED_SET,aha_bus_speeds[speed].arg);
|
|
|
|
/*******************************************************\
|
|
* put the test data into the buffer and calculate *
|
|
* it's address. Read it onto the board *
|
|
\*******************************************************/
|
|
strcpy(aha_scratch_buf,aha_test_string);
|
|
lto3b(KVTOPHYS(aha_scratch_buf),ad);
|
|
|
|
aha_cmd(unit,3, 0, 0, 0, AHA_WRITE_FIFO, ad[0], ad[1], ad[2]);
|
|
|
|
/*******************************************************\
|
|
* clear the buffer then copy the contents back from the *
|
|
* board. *
|
|
\*******************************************************/
|
|
bzero(aha_scratch_buf,54); /* 54 bytes transfered by test */
|
|
|
|
aha_cmd(unit,3, 0, 0, 0, AHA_READ_FIFO, ad[0], ad[1], ad[2]);
|
|
|
|
/*******************************************************\
|
|
* Compare the original data and the final data and *
|
|
* return the correct value depending upon the result *
|
|
\*******************************************************/
|
|
if(strcmp(aha_test_string,aha_scratch_buf))
|
|
{ /* copy failed.. assume too fast */
|
|
return(0);
|
|
}
|
|
else
|
|
{ /* copy succeded assume speed ok */
|
|
return(aha_bus_speeds[speed].nsecs);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
aha_timeout(struct aha_ccb *ccb)
|
|
{
|
|
int unit;
|
|
int s = splbio();
|
|
|
|
unit = ccb->xfer->adapter;
|
|
printf("aha%d: device %d timed out ",unit ,ccb->xfer->targ);
|
|
|
|
/***************************************\
|
|
* If The ccb's mbx is not free, then *
|
|
* the board has gone south *
|
|
\***************************************/
|
|
if(ccb->mbx->cmd != AHA_MBO_FREE)
|
|
{
|
|
printf("aha%d: not taking commands!\n",unit);
|
|
Debugger();
|
|
}
|
|
/***************************************\
|
|
* If it has been through before, then *
|
|
* a previous abort has failed, don't *
|
|
* try abort again *
|
|
\***************************************/
|
|
if(ccb->flags == CCB_ABORTED) /* abort timed out */
|
|
{
|
|
printf(" AGAIN\n");
|
|
ccb->xfer->retries = 0; /* I MEAN IT ! */
|
|
ccb->host_stat = AHA_ABORTED;
|
|
aha_done(unit,ccb);
|
|
}
|
|
else /* abort the operation that has timed out */
|
|
{
|
|
printf("\n");
|
|
aha_abortmbx(ccb->mbx);
|
|
/* 2 secs for the abort */
|
|
timeout(aha_timeout,ccb,2 * hz);
|
|
ccb->flags = CCB_ABORTED;
|
|
}
|
|
splx(s);
|
|
}
|