1454 lines
34 KiB
C
1454 lines
34 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 1.15 1993/11/18 05:02:12 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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#include <sys/types.h>
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#ifdef KERNEL /* don't laugh.. look for main() */
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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/malloc.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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#include <i386/isa/isa_device.h>
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#endif /* KERNEL */
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#ifdef KERNEL
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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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extern int hz;
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#else /*KERNEL */
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#define NAHA 1
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#endif /*KERNEL */
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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->aha_base
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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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/*
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* mbi.stat values
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*/
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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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/* 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 scatter 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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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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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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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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#define PHYSTOKV(x) (((long int)(x)) ^ aha->kv_phys_xor)
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#define KVTOPHYS(x) vtophys(x)
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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 AHADEBUG
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int aha_debug = 1;
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#endif /*AHADEBUG */
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struct aha_data {
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short aha_base; /* base port for each board */
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/*
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* xor this with a physaddr to get a kv addr and visa versa
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* for items in THIS STRUCT only.
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* Used to get the CCD's physical and kv addresses from each
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* other.
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*/
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long int kv_phys_xor;
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struct aha_mbx aha_mbx; /* all the mailboxes */
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struct aha_ccb *aha_ccb_free; /* the next free ccb */
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struct aha_ccb aha_ccb[AHA_MBX_SIZE]; /* all the CCBs */
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int aha_int; /* our irq level */
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int aha_dma; /* out DMA req channel */
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int aha_scsi_dev; /* ourscsi bus address */
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struct scsi_link sc_link; /* prototype for subdevs */
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} *ahadata[NAHA];
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struct aha_ccb *aha_get_ccb();
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int ahaprobe();
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void aha_done();
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int ahaattach();
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int ahaintr();
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int32 aha_scsi_cmd();
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void aha_timeout(caddr_t, int);
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void ahaminphys();
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u_int32 aha_adapter_info();
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#ifdef KERNEL
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struct scsi_adapter 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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/* the below structure is so we have a default dev struct for out link struct */
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struct scsi_device aha_dev =
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{
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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"aha",
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0,
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0, 0
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};
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struct isa_driver ahadriver =
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{
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ahaprobe,
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ahaattach,
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"aha"
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};
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#endif /* KERNEL */
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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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#define AHA_RESET_TIMEOUT 1000 /* time to wait for reset (mSec) */
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#ifndef KERNEL
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main()
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{
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printf("size of aha_data is %d\n", sizeof(struct aha_data));
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printf("size of aha_ccb is %d\n", sizeof(struct aha_ccb));
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printf("size of aha_mbx is %d\n", sizeof(struct aha_mbx));
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}
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#else /*KERNEL */
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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. One of the adapter
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* commands tells it to read in a scsi command but that one is done
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* separately. This is only called during set-up.
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*/
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int
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aha_cmd(unit, icnt, ocnt, wait, retval, opcode, args)
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int unit;
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int icnt;
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int ocnt;
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int wait;
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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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struct aha_data *aha = ahadata[unit];
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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 sec..
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* all wait loops are in 50uSec cycles
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*/
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if (wait)
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wait *= 20000;
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else
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wait = 20000;
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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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i = 20000; /*do this for upto about a second */
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while (--i) {
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sts = inb(AHA_CTRL_STAT_PORT);
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if (sts & AHA_IDLE) {
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break;
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}
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DELAY(50);
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}
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if (!i) {
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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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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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*/
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icnt++;
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/* include the command */
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while (icnt--) {
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sts = inb(AHA_CTRL_STAT_PORT);
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for (i = wait; i; 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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DELAY(50);
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}
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if (i == 0) {
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printf("aha%d: aha_cmd, cmd/data port full\n", unit);
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outb(AHA_CTRL_STAT_PORT, AHA_SRST);
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return (ENXIO);
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}
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outb(AHA_CMD_DATA_PORT, (u_char) (*ic++));
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}
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/*
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* If we expect input, loop that many times, each time,
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* looking for the data register to have valid data
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*/
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while (ocnt--) {
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sts = inb(AHA_CTRL_STAT_PORT);
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for (i = wait; i; i--) {
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sts = inb(AHA_CTRL_STAT_PORT);
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if (sts & AHA_DF)
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break;
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DELAY(50);
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}
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if (i == 0) {
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printf("aha%d: aha_cmd, cmd/data port empty %d\n",
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unit, ocnt);
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return (ENXIO);
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}
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oc = inb(AHA_CMD_DATA_PORT);
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if (retval)
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*retval++ = oc;
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}
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/*
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* Wait for the board to report a finised instruction
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*/
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i = 20000;
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while (--i) {
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sts = inb(AHA_INTR_PORT);
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if (sts & AHA_HACC) {
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break;
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}
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DELAY(50);
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}
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if (i == 0) {
|
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printf("aha%d: aha_cmd, host not finished(0x%x)\n", unit, sts);
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return (ENXIO);
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}
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|
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_device structure from
|
|
* autoconf.c
|
|
*/
|
|
int
|
|
ahaprobe(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
int unit = ahaunit;
|
|
struct aha_data *aha;
|
|
|
|
/*
|
|
* find unit and check we have that many defined
|
|
*/
|
|
if (unit >= NAHA) {
|
|
printf("aha%d: unit number too high\n", unit);
|
|
return 0;
|
|
}
|
|
dev->id_unit = unit;
|
|
|
|
/*
|
|
* a quick safety check so we can be sleazy later
|
|
*/
|
|
if (sizeof(struct aha_data) > PAGESIZ) {
|
|
printf("aha struct > pagesize\n");
|
|
return 0;
|
|
}
|
|
/*
|
|
* Allocate a storage area for us
|
|
*/
|
|
if (ahadata[unit]) {
|
|
printf("aha%d: memory already allocated\n", unit);
|
|
return 0;
|
|
}
|
|
aha = malloc(sizeof(struct aha_data), M_TEMP, M_NOWAIT);
|
|
if (!aha) {
|
|
printf("aha%d: cannot malloc!\n", unit);
|
|
return 0;
|
|
}
|
|
ahadata[unit] = aha;
|
|
aha->aha_base = dev->id_iobase;
|
|
/*
|
|
* Try initialise a unit at this location
|
|
* sets up dma and bus speed, loads aha->aha_int
|
|
*/
|
|
if (aha_init(unit) != 0) {
|
|
ahadata[unit] = NULL;
|
|
free(aha, M_TEMP);
|
|
return 0;
|
|
}
|
|
/*
|
|
* Calculate the xor product of the aha struct's
|
|
* physical and virtual address. This allows us
|
|
* to change addresses within the structure
|
|
* from physical to virtual easily, as long as
|
|
* the structure is less than 1 page in size.
|
|
* This is used to recognise CCBs which are in
|
|
* this struct and which are refered to by the
|
|
* hardware using physical addresses.
|
|
* (assumes malloc returns a chunk that doesn't
|
|
* span pages)
|
|
* eventually use the hash table in aha1742.c
|
|
*/
|
|
aha->kv_phys_xor = (long int) aha ^ (KVTOPHYS(aha));
|
|
|
|
/*
|
|
* If it's there, put in it's interrupt vectors
|
|
*/
|
|
dev->id_irq = (1 << aha->aha_int);
|
|
dev->id_drq = aha->aha_dma;
|
|
ahaunit++;
|
|
return 0x4;
|
|
}
|
|
|
|
/*
|
|
* Attach all the sub-devices we can find
|
|
*/
|
|
int
|
|
ahaattach(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
int unit = dev->id_unit;
|
|
struct aha_data *aha = ahadata[unit];
|
|
|
|
/*
|
|
* fill in the prototype scsi_link.
|
|
*/
|
|
aha->sc_link.adapter_unit = unit;
|
|
aha->sc_link.adapter_targ = aha->aha_scsi_dev;
|
|
aha->sc_link.adapter = &aha_switch;
|
|
aha->sc_link.device = &aha_dev;
|
|
|
|
/*
|
|
* ask the adapter what subunits are present
|
|
*/
|
|
scsi_attachdevs(&(aha->sc_link));
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return some information to the caller about the adapter and its
|
|
* capabilities.
|
|
*/
|
|
u_int32
|
|
aha_adapter_info(unit)
|
|
int unit;
|
|
{
|
|
return (2); /* 2 outstanding requests at a time per device */
|
|
}
|
|
|
|
/*
|
|
* Catch an interrupt from the adaptor
|
|
*/
|
|
int
|
|
ahaintr(unit)
|
|
int unit;
|
|
{
|
|
struct aha_ccb *ccb;
|
|
unsigned char stat;
|
|
register i;
|
|
struct aha_data *aha = ahadata[unit];
|
|
|
|
#ifdef AHADEBUG
|
|
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);
|
|
if (!(stat & AHA_MBIF))
|
|
return 1;
|
|
#ifdef AHADEBUG
|
|
printf("mbxin ");
|
|
#endif /*AHADEBUG */
|
|
/*
|
|
* If it IS then process the competed operation
|
|
*/
|
|
for (i = 0; i < AHA_MBX_SIZE; i++) {
|
|
if (aha->aha_mbx.mbi[i].stat != AHA_MBI_FREE) {
|
|
ccb = (struct aha_ccb *) PHYSTOKV(
|
|
(_3btol(aha->aha_mbx.mbi[i].ccb_addr)));
|
|
|
|
if ((stat = aha->aha_mbx.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->aha_mbx.mbi[i].stat, i);
|
|
printf("addr = 0x%x\n", ccb);
|
|
}
|
|
#endif /*AHADEBUG */
|
|
}
|
|
if (ccb) {
|
|
untimeout(aha_timeout, ccb);
|
|
aha_done(unit, ccb);
|
|
}
|
|
aha->aha_mbx.mbi[i].stat = AHA_MBI_FREE;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* A ccb (and hence a mbx-out is put onto the
|
|
* free list.
|
|
*/
|
|
void
|
|
aha_free_ccb(unit, ccb, flags)
|
|
int unit;
|
|
struct aha_ccb *ccb;
|
|
int flags;
|
|
{
|
|
struct aha_data *aha = ahadata[unit];
|
|
unsigned int opri = 0;
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
ccb->next = aha->aha_ccb_free;
|
|
aha->aha_ccb_free = ccb;
|
|
ccb->flags = CCB_FREE;
|
|
/*
|
|
* If there were none, wake anybody waiting for
|
|
* one to come free, starting with queued entries
|
|
*/
|
|
if (!ccb->next) {
|
|
wakeup((caddr_t)&aha->aha_ccb_free);
|
|
}
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
}
|
|
|
|
/*
|
|
* Get a free ccb (and hence mbox-out entry)
|
|
*/
|
|
struct aha_ccb *
|
|
aha_get_ccb(unit, flags)
|
|
int unit;
|
|
int flags;
|
|
{
|
|
struct aha_data *aha = ahadata[unit];
|
|
unsigned opri = 0;
|
|
struct aha_ccb *rc;
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
/*
|
|
* If we can and have to, sleep waiting for one
|
|
* to come free
|
|
*/
|
|
while ((!(rc = aha->aha_ccb_free)) && (!(flags & SCSI_NOSLEEP))) {
|
|
sleep(&aha->aha_ccb_free, PRIBIO);
|
|
}
|
|
if (rc) {
|
|
aha->aha_ccb_free = aha->aha_ccb_free->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
|
|
*/
|
|
void
|
|
aha_done(unit, ccb)
|
|
int unit;
|
|
struct aha_ccb *ccb;
|
|
{
|
|
struct aha_data *aha = ahadata[unit];
|
|
struct scsi_sense_data *s1, *s2;
|
|
struct scsi_xfer *xs = ccb->xfer;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("aha_done\n"));
|
|
/*
|
|
* 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) == 0)) {
|
|
/*
|
|
* We have an error, that we cannot ignore.
|
|
*/
|
|
s1 = (struct scsi_sense_data *) (((char *) (&ccb->scsi_cmd))
|
|
+ ccb->scsi_cmd_length);
|
|
s2 = &(xs->sense);
|
|
|
|
if (ccb->host_stat) {
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("host err 0x%x\n",
|
|
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;
|
|
printf("aha%d:host_stat%x\n",
|
|
unit, ccb->host_stat);
|
|
}
|
|
} else {
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("target err 0x%x\n",
|
|
ccb->target_stat));
|
|
switch (ccb->target_stat) {
|
|
case 0x02:
|
|
/* structure copy!!!!! */
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case 0x08:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
printf("aha%d:target_stat%x\n",
|
|
unit, ccb->target_stat);
|
|
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);
|
|
scsi_done(xs);
|
|
}
|
|
|
|
/*
|
|
* Start the board, ready for normal operation
|
|
*/
|
|
int
|
|
aha_init(unit)
|
|
int unit;
|
|
{
|
|
struct aha_data *aha = ahadata[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 = AHA_RESET_TIMEOUT; i; i--) {
|
|
sts = inb(AHA_CTRL_STAT_PORT);
|
|
if (sts == (AHA_IDLE | AHA_INIT))
|
|
break;
|
|
DELAY(1000); /* calibrated in msec */
|
|
}
|
|
if (i == 0) {
|
|
#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
|
|
*/
|
|
printf("aha%d: reading board settings, ", unit);
|
|
#define PRNT(x) printf(x)
|
|
DELAY(1000); /* 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->aha_dma = 0;
|
|
PRNT("dma=0 ");
|
|
break;
|
|
case CHAN5:
|
|
outb(0xd6, 0xc1);
|
|
outb(0xd4, 0x01);
|
|
aha->aha_dma = 5;
|
|
PRNT("dma=5 ");
|
|
break;
|
|
case CHAN6:
|
|
outb(0xd6, 0xc2);
|
|
outb(0xd4, 0x02);
|
|
aha->aha_dma = 6;
|
|
PRNT("dma=6 ");
|
|
break;
|
|
case CHAN7:
|
|
outb(0xd6, 0xc3);
|
|
outb(0xd4, 0x03);
|
|
aha->aha_dma = 7;
|
|
PRNT("dma=7 ");
|
|
break;
|
|
default:
|
|
printf("illegal dma jumper setting\n");
|
|
return (EIO);
|
|
}
|
|
switch (conf.intr) {
|
|
case INT9:
|
|
aha->aha_int = 9;
|
|
PRNT("int=9 ");
|
|
break;
|
|
case INT10:
|
|
aha->aha_int = 10;
|
|
PRNT("int=10 ");
|
|
break;
|
|
case INT11:
|
|
aha->aha_int = 11;
|
|
PRNT("int=11 ");
|
|
break;
|
|
case INT12:
|
|
aha->aha_int = 12;
|
|
PRNT("int=12 ");
|
|
break;
|
|
case INT14:
|
|
aha->aha_int = 14;
|
|
PRNT("int=14 ");
|
|
break;
|
|
case INT15:
|
|
aha->aha_int = 15;
|
|
PRNT("int=15 ");
|
|
break;
|
|
default:
|
|
printf("illegal int jumper setting\n");
|
|
return (EIO);
|
|
}
|
|
|
|
/* who are we on the scsi bus? */
|
|
aha->aha_scsi_dev = conf.scsi_dev;
|
|
|
|
/*
|
|
* Change the bus on/off times to not clash with other dma users.
|
|
*/
|
|
aha_cmd(unit, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7);
|
|
aha_cmd(unit, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4);
|
|
|
|
#ifdef TUNE_1542
|
|
/*
|
|
* Initialize memory transfer speed
|
|
* Not compiled in by default because it breaks some machines
|
|
*/
|
|
if (!(aha_set_bus_speed(unit))) {
|
|
return (EIO);
|
|
}
|
|
#else
|
|
printf ("\n");
|
|
#endif /*TUNE_1542*/
|
|
/*
|
|
* Initialize mail box
|
|
*/
|
|
lto3b(KVTOPHYS(&aha->aha_mbx), 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
|
|
* this is a kludge but it works
|
|
*/
|
|
for (i = 0; i < AHA_MBX_SIZE; i++) {
|
|
aha->aha_ccb[i].next = aha->aha_ccb_free;
|
|
aha->aha_ccb_free = &aha->aha_ccb[i];
|
|
aha->aha_ccb_free->flags = CCB_FREE;
|
|
aha->aha_ccb_free->mbx = &aha->aha_mbx.mbo[i];
|
|
lto3b(KVTOPHYS(aha->aha_ccb_free), aha->aha_mbx.mbo[i].ccb_addr);
|
|
}
|
|
/*
|
|
* Note that we are going and return (to probe)
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ahaminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
/* 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
|
|
*/
|
|
int32
|
|
aha_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct scsi_link *sc_link = xs->sc_link;
|
|
int unit = sc_link->adapter_unit;
|
|
struct aha_data *aha = ahadata[unit];
|
|
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 bytes_this_seg, bytes_this_page, datalen, flags;
|
|
struct iovec *iovp;
|
|
int s;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("aha_scsi_cmd\n"));
|
|
/*
|
|
* 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 (!(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 = sc_link->target;
|
|
ccb->data_out = 0;
|
|
ccb->data_in = 0;
|
|
ccb->lun = sc_link->lun;
|
|
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;
|
|
#ifdef TFS_ONLY
|
|
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);
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("UIO(0x%x@0x%x)"
|
|
,iovp->iov_len
|
|
,iovp->iov_base));
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
} else
|
|
#endif /*TFS_ONLY */
|
|
{
|
|
/*
|
|
* Set up the scatter gather block
|
|
*/
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB4,
|
|
("%d @0x%x:- ", xs->datalen, xs->data));
|
|
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);
|
|
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
|
("0x%x", thisphys));
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while ((datalen) && (thisphys == nextphys)) {
|
|
/*
|
|
* This page is contiguous (physically)
|
|
* with the the last, just extend the
|
|
* length
|
|
*/
|
|
/* check it fits on the ISA bus */
|
|
if (thisphys > 0xFFFFFF)
|
|
{
|
|
printf("aha%d: DMA beyond"
|
|
" end Of ISA\n", unit);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
aha_free_ccb(unit, ccb, flags);
|
|
return (HAD_ERROR);
|
|
}
|
|
/** 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
|
|
*/
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
|
("(0x%x)", bytes_this_seg));
|
|
lto3b(bytes_this_seg, sg->seg_len);
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
lto3b(seg * sizeof(struct aha_scat_gath), ccb->data_length);
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
|
|
|
|
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);
|
|
if (!(flags & SCSI_NOMASK)) {
|
|
s = splbio(); /* stop instant timeouts */
|
|
timeout(aha_timeout, (caddr_t)ccb, (xs->timeout * hz) / 1000);
|
|
aha_startmbx(ccb->mbx);
|
|
/*
|
|
* Usually return SUCCESSFULLY QUEUED
|
|
*/
|
|
splx(s);
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("sent\n"));
|
|
return (SUCCESSFULLY_QUEUED);
|
|
}
|
|
aha_startmbx(ccb->mbx);
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd sent, waiting\n"));
|
|
|
|
/*
|
|
* If we can't use interrupts, poll on completion
|
|
*/
|
|
return (aha_poll(unit, xs, ccb)); /* only during boot */
|
|
}
|
|
|
|
/*
|
|
* Poll a particular unit, looking for a particular xs
|
|
*/
|
|
int
|
|
aha_poll(unit, xs, ccb)
|
|
int unit;
|
|
struct scsi_xfer *xs;
|
|
struct aha_ccb *ccb;
|
|
{
|
|
struct aha_data *aha = ahadata[unit];
|
|
int done = 0;
|
|
int count = xs->timeout;
|
|
u_char stat;
|
|
|
|
/*timeouts are in msec, so we loop in 1000uSec cycles */
|
|
while (count) {
|
|
/*
|
|
* If we had interrupts enabled, would we
|
|
* have got an interrupt?
|
|
*/
|
|
stat = inb(AHA_INTR_PORT);
|
|
if (stat & AHA_ANY_INTR) {
|
|
ahaintr(unit);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out, so call the timeout handler
|
|
* manually, accout for the fact that the
|
|
* clock is not running yet by taking out the
|
|
* clock queue entry it makes
|
|
*/
|
|
aha_timeout((caddr_t)ccb, 0);
|
|
|
|
/*
|
|
* because we are polling,
|
|
* take out the timeout entry aha_timeout made
|
|
*/
|
|
untimeout(aha_timeout, ccb);
|
|
count = 2000;
|
|
while (count) {
|
|
/*
|
|
* Once again, wait for the int bit
|
|
*/
|
|
stat = inb(AHA_INTR_PORT);
|
|
if (stat & AHA_ANY_INTR) {
|
|
ahaintr(unit);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out again.. this is bad
|
|
* Notice that this time there is no
|
|
* clock queue entry to remove
|
|
*/
|
|
aha_timeout((caddr_t)ccb, 0);
|
|
}
|
|
}
|
|
if (xs->error)
|
|
return (HAD_ERROR);
|
|
return (COMPLETE);
|
|
|
|
}
|
|
|
|
#ifdef TUNE_1542
|
|
/*
|
|
* Try all the speeds from slowest to fastest.. if it finds a
|
|
* speed that fails, back off one notch from the last working
|
|
* speed (unless there is no other notch).
|
|
* Returns the nSEC value of the time used
|
|
* or 0 if it could get a working speed (or the NEXT speed
|
|
* failed)
|
|
*/
|
|
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}
|
|
};
|
|
|
|
int
|
|
aha_set_bus_speed(unit)
|
|
int unit;
|
|
{
|
|
int speed;
|
|
int lastworking;
|
|
int retval,retval2;
|
|
struct aha_data *aha = ahadata[unit];
|
|
|
|
lastworking = -1;
|
|
speed = 7;
|
|
while (1) {
|
|
retval = aha_bus_speed_check(unit,speed);
|
|
if(retval != 0) {
|
|
lastworking = speed;
|
|
}
|
|
if((retval == 0) || (speed == 0)) {
|
|
if(lastworking == -1) {
|
|
printf("No working bus speed for aha154X\n");
|
|
return 0;
|
|
}
|
|
printf("%d nSEC ok, using "
|
|
,aha_bus_speeds[lastworking].nsecs);
|
|
if(lastworking == 7) { /* is slowest already */
|
|
printf("marginal ");
|
|
} else {
|
|
lastworking++;
|
|
}
|
|
retval2 = aha_bus_speed_check(unit,lastworking);
|
|
if(retval2 == 0) {
|
|
printf("test retry failed.. aborting.\n");
|
|
return 0;
|
|
}
|
|
printf("%d nSEC\n",retval2);
|
|
return retval2 ;
|
|
|
|
}
|
|
speed--;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 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);
|
|
int loopcount;
|
|
u_char ad[3];
|
|
struct aha_data *aha = ahadata[unit];
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
lto3b(KVTOPHYS(aha_scratch_buf), ad);
|
|
for(loopcount = 2000;loopcount;loopcount--)
|
|
{
|
|
strcpy(aha_scratch_buf, aha_test_string);
|
|
|
|
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))
|
|
return 0; /* failed test */
|
|
}
|
|
/* copy succeded assume speed ok */
|
|
|
|
return (aha_bus_speeds[speed].nsecs);
|
|
|
|
}
|
|
#endif /*TUNE_1542*/
|
|
|
|
void
|
|
aha_timeout(caddr_t arg1, int arg2)
|
|
{
|
|
struct aha_ccb * ccb = (struct aha_ccb *)arg1;
|
|
int unit;
|
|
int s = splbio();
|
|
struct aha_data *aha;
|
|
|
|
unit = ccb->xfer->sc_link->adapter_unit;
|
|
aha = ahadata[unit];
|
|
sc_print_addr(ccb->xfer->sc_link);
|
|
printf("timed out ");
|
|
|
|
/*
|
|
* If The ccb's mbx is not free, then
|
|
* the board has gone south
|
|
*/
|
|
if (ccb->mbx->cmd != AHA_MBO_FREE) {
|
|
printf("\nadapter not taking commands.. frozen?!\n");
|
|
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);
|
|
/* 4 secs for the abort */
|
|
timeout(aha_timeout, (caddr_t)ccb, 4 * hz);
|
|
ccb->flags = CCB_ABORTED;
|
|
} splx(s);
|
|
}
|
|
#endif /* KERNEL */
|