1808 lines
44 KiB
C
1808 lines
44 KiB
C
/*
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* 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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*
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*/
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/*
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* HISTORY
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* $Log: bt742a.c,v $
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* Revision 1.2 1993/07/29 11:55:35 nate
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* Syncing our sources back with Julian's, and removing PATCHKIT headers.
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*
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* Large Bustek changes, most everything else is minimal.
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*
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* Revision 1.1.1.1 1993/06/12 14:57:58 rgrimes
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* Initial import, 0.1 + pk 0.2.4-B1
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*
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* Revision 1.11 93/05/27 13:39:52 julian
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* Enable mail box round-robin scheme by new host adapter command appeared
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* at FirmWare V3.31 ( This release is shipped without testing at V3.31 )
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*
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* Revision 1.10 93/05/22 16:38:22 julian
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* under OSF, the dev_pic must be set up before it's used.
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* was only done ifndef OSF.
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*
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* Revision 1.9 93/05/07 11:37:24 julian
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* fix SLEEPTIME calculation.
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*
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* Revision 1.8 93/05/07 11:27:00 julian
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* Merge with 1.7.1
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*
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* Revision 1.7.1 1993/01/01 04:01:02 amurai
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* Basically this modification fixes 'doesn't take command' issue
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* that occured on FirmWare V3.30
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* - Using IN/OUT mail box as round-robin for reducing I/O bus cycle
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* and interrupts.
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* - Print out routine are ifdef'ed rather than just 'if (flags)'
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* for perfomance.
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*
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* Revision 1.7 1992/08/24 22:40:16 jason
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* BIG_DMA ifdef for 512 dma segments instead of 128 segments
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*
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* Revision 1.6 1992/08/24 21:01:58 jason
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* many changes and bugfixes for osf1
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*
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* Revision 1.5 1992/07/31 01:22:03 julian
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* support improved scsi.h layout
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*
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* Revision 1.4 1992/07/25 03:11:26 julian
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* check each request fro sane flags.
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*
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* Revision 1.3 1992/07/24 00:52:45 julian
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* improved timeout handling.
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* added support for two arguments to the sd_done (or equiv) call so that
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* they can pre-queue several arguments.
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* slightly clean up error handling
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*
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* Revision 1.2 1992/07/17 22:03:54 julian
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* upgraded the timeout code.
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* added support for UIO-based i/o (as used for pmem operations)
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*
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* Revision 1.1 1992/05/27 00:51:12 balsup
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* machkern/cor merge
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*
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*/
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/*
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* bt742a SCSI driver
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*/
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#include <sys/types.h>
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#include <bt.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 (bt742a.c)")
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#endif NDDB
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#endif __386BSD__
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#ifdef MACH
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int Debugger();
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#endif MACH
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extern int delaycount; /* from clock setup code */
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typedef unsigned long int physaddr;
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/*
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* I/O Port Interface
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*/
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#define BT_BASE bt_base[unit]
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#define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */
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#define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */
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#define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */
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/*
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* BT_CTRL_STAT bits (write)
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*/
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#define BT_HRST 0x80 /* Hardware reset */
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#define BT_SRST 0x40 /* Software reset */
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#define BT_IRST 0x20 /* Interrupt reset */
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#define BT_SCRST 0x10 /* SCSI bus reset */
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/*
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* BT_CTRL_STAT bits (read)
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*/
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#define BT_STST 0x80 /* Self test in Progress */
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#define BT_DIAGF 0x40 /* Diagnostic Failure */
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#define BT_INIT 0x20 /* Mbx Init required */
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#define BT_IDLE 0x10 /* Host Adapter Idle */
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#define BT_CDF 0x08 /* cmd/data out port full */
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#define BT_DF 0x04 /* Data in port full */
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#define BT_INVDCMD 0x01 /* Invalid command */
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/*
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* BT_CMD_DATA bits (write)
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*/
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#define BT_NOP 0x00 /* No operation */
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#define BT_MBX_INIT 0x01 /* Mbx initialization */
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#define BT_START_SCSI 0x02 /* start scsi command */
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#define BT_START_BIOS 0x03 /* start bios command */
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#define BT_INQUIRE 0x04 /* Adapter Inquiry */
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#define BT_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */
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#define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */
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#define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */
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#define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */
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#define BT_SPEED_SET 0x09 /* set transfer speed */
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#define BT_DEV_GET 0x0a /* return installed devices */
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#define BT_CONF_GET 0x0b /* return configuration data */
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#define BT_TARGET_EN 0x0c /* enable target mode */
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#define BT_SETUP_GET 0x0d /* return setup data */
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#define BT_WRITE_CH2 0x1a /* write channel 2 buffer */
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#define BT_READ_CH2 0x1b /* read channel 2 buffer */
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#define BT_WRITE_FIFO 0x1c /* write fifo buffer */
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#define BT_READ_FIFO 0x1d /* read fifo buffer */
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#define BT_ECHO 0x1e /* Echo command data */
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#define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */
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#define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */
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/* Follows command appeared at FirmWare 3.31 */
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#define BT_ROUND_ROBIN 0x8f /* Enable/Disable(default) round robin */
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#define BT_DISABLE 0x00 /* Parameter value for Disable */
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#define BT_ENABLE 0x01 /* Parameter value for Enable */
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struct bt_cmd_buf {
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u_char byte[16];
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};
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/*
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* BT_INTR_PORT bits (read)
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*/
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#define BT_ANY_INTR 0x80 /* Any interrupt */
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#define BT_SCRD 0x08 /* SCSI reset detected */
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#define BT_HACC 0x04 /* Command complete */
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#define BT_MBOA 0x02 /* MBX out empty */
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#define BT_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 BT_MBX_SIZE 255 /* mail box size (MAX 255 MBxs) */
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#define BT_CCB_SIZE 32 /* store up to 32CCBs at any one time */
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/* in bt742a H/W ( Not MAX ? ) */
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#define bt_nextmbx( wmb, mbx, mbio ) \
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if ( (wmb) == &((mbx)->mbio[BT_MBX_SIZE - 1 ]) ) { \
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(wmb) = &((mbx)->mbio[0]); \
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} else { \
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(wmb)++; \
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}
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typedef struct bt_mbx_out {
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physaddr ccb_addr;
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unsigned char dummy[3];
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unsigned char cmd;
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} BT_MBO;
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typedef struct bt_mbx_in{
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physaddr ccb_addr;
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unsigned char btstat;
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unsigned char sdstat;
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unsigned char dummy;
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unsigned char stat;
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} BT_MBI;
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struct bt_mbx
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{
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BT_MBO mbo[BT_MBX_SIZE];
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BT_MBI mbi[BT_MBX_SIZE];
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BT_MBO *tmbo; /* Target Mail Box out */
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BT_MBI *tmbi; /* Target Mail Box in */
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};
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/*
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* mbo.cmd values
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*/
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#define BT_MBO_FREE 0x0 /* MBO entry is free */
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#define BT_MBO_START 0x1 /* MBO activate entry */
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#define BT_MBO_ABORT 0x2 /* MBO abort entry */
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#define BT_MBI_FREE 0x0 /* MBI entry is free */
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#define BT_MBI_OK 0x1 /* completed without error */
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#define BT_MBI_ABORT 0x2 /* aborted ccb */
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#define BT_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */
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#define BT_MBI_ERROR 0x4 /* Completed with error */
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extern struct bt_mbx bt_mbx[];
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#if defined(BIG_DMA)
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/* #define BT_NSEG 8192 /* Number of scatter gather segments - to much vm */
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#define BT_NSEG 512
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#else
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#define BT_NSEG 33
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#endif /* BIG_DMA */
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struct bt_scat_gath
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{
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unsigned long seg_len;
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physaddr seg_addr;
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};
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struct bt_ccb {
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unsigned char opcode;
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unsigned char :3,data_in:1,data_out:1,:3;
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unsigned char scsi_cmd_length;
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unsigned char req_sense_length;
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/*------------------------------------longword boundary */
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unsigned long data_length;
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/*------------------------------------longword boundary */
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physaddr data_addr;
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/*------------------------------------longword boundary */
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unsigned char dummy[2];
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unsigned char host_stat;
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unsigned char target_stat;
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/*------------------------------------longword boundary */
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unsigned char target;
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unsigned char lun;
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unsigned char scsi_cmd[12]; /* 12 bytes (bytes only)*/
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unsigned char dummy2[1];
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unsigned char link_id;
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/*------------------------------------4 longword boundary */
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physaddr link_addr;
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/*------------------------------------longword boundary */
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physaddr sense_ptr;
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/*------------------------------------longword boundary */
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struct scsi_sense_data scsi_sense;
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/*------------------------------------longword boundary */
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struct bt_scat_gath scat_gath[BT_NSEG];
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/*------------------------------------longword boundary */
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struct bt_ccb *next;
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/*------------------------------------longword boundary */
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struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */
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/*------------------------------------longword boundary */
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struct bt_mbx_out *mbx; /* pointer to mail box */
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/*------------------------------------longword boundary */
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long int delta; /* difference from previous*/
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struct bt_ccb *later,*sooner;
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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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struct bt_ccb *bt_soonest = (struct bt_ccb *)0;
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struct bt_ccb *bt_latest = (struct bt_ccb *)0;
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long int bt_furtherest = 0; /* longest time in the timeout queue */
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/*
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* opcode fields
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*/
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#define BT_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */
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#define BT_TARGET_CCB 0x01 /* SCSI Target CCB */
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#define BT_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather*/
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#define BT_RESET_CCB 0x81 /* SCSI Bus reset */
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/*
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* bt_ccb.host_stat values
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*/
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#define BT_OK 0x00 /* cmd ok */
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#define BT_LINK_OK 0x0a /* Link cmd ok */
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#define BT_LINK_IT 0x0b /* Link cmd ok + int */
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#define BT_SEL_TIMEOUT 0x11 /* Selection time out */
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#define BT_OVER_UNDER 0x12 /* Data over/under run */
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#define BT_BUS_FREE 0x13 /* Bus dropped at unexpected time */
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#define BT_INV_BUS 0x14 /* Invalid bus phase/sequence */
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#define BT_BAD_MBO 0x15 /* Incorrect MBO cmd */
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#define BT_BAD_CCB 0x16 /* Incorrect ccb opcode */
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#define BT_BAD_LINK 0x17 /* Not same values of LUN for links */
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#define BT_INV_TARGET 0x18 /* Invalid target direction */
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#define BT_CCB_DUP 0x19 /* Duplicate CCB received */
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#define BT_INV_CCB 0x1a /* Invalid CCB or segment list */
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#define BT_ABORTED 42 /* pseudo value from driver */
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struct bt_boardID
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{
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u_char board_type;
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u_char custom_feture;
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char firm_revision;
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u_char firm_version;
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};
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struct bt_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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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 bt_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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#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 EISADMA 0x00
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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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#ifdef MACH
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extern physaddr kvtophys();
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#define PHYSTOKV(x) phystokv(x)
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#define KVTOPHYS(x) kvtophys(x)
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#endif MACH
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#ifdef __386BSD__
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#define PHYSTOKV(x) (x | 0xFE000000)
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#define KVTOPHYS(x) vtophys(x)
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#endif __386BSD__
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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 bt_scratch_buf[256];
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#ifdef MACH
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caddr_t bt_base[NBT]; /* base port for each board */
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#else MACH
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short bt_base[NBT]; /* base port for each board */
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#endif MACH
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struct bt_mbx bt_mbx[NBT];
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struct bt_ccb *bt_ccb_free[NBT];
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struct bt_ccb bt_ccb[NBT][BT_CCB_SIZE];
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struct scsi_xfer bt_scsi_xfer[NBT];
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struct isa_dev *btinfo[NBT];
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struct bt_ccb *bt_get_ccb();
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int bt_int[NBT];
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int bt_dma[NBT];
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int bt_scsi_dev[NBT];
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int bt_initialized[NBT];
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#if defined(OSF)
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int bt_attached[NBT];
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#endif /* defined(OSF) */
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/***********debug values *************/
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#define BT_SHOWCCBS 0x01
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#define BT_SHOWINTS 0x02
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#define BT_SHOWCMDS 0x04
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#define BT_SHOWMISC 0x08
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int bt_debug = 0;
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int btprobe(), btattach();
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int btintr();
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#ifdef MACH
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struct isa_driver btdriver = { btprobe, 0, btattach, "bt", 0, 0, 0};
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int (*btintrs[])() = {btintr, 0};
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#endif MACH
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#ifdef __386BSD__
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struct isa_driver btdriver = { btprobe, btattach, "bt"};
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#endif __386BSD__
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static int btunit = 0;
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int bt_scsi_cmd();
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int bt_timeout();
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void btminphys();
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long int bt_adapter_info();
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struct scsi_switch bt_switch =
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{
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bt_scsi_cmd,
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btminphys,
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0,
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0,
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bt_adapter_info,
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0,0,0
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};
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#define BT_CMD_TIMEOUT_FUDGE 200 /* multiplied to get Secs */
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#define BT_RESET_TIMEOUT 1000000
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#define BT_SCSI_TIMEOUT_FUDGE 20 /* divided by for mSecs */
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/***********************************************************************\
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* bt_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 BT_NOP, BT_MBX_INIT, BT_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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bt_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;
|
|
u_char oc;
|
|
register i;
|
|
int sts;
|
|
|
|
/*******************************************************\
|
|
* multiply the wait argument by a big constant *
|
|
* zero defaults to 1 *
|
|
\*******************************************************/
|
|
if(!wait)
|
|
wait = BT_CMD_TIMEOUT_FUDGE * delaycount;
|
|
else
|
|
wait *= BT_CMD_TIMEOUT_FUDGE * delaycount;
|
|
/*******************************************************\
|
|
* Wait for the adapter to go idle, unless it's one of *
|
|
* the commands which don't need this *
|
|
\*******************************************************/
|
|
if (opcode != BT_MBX_INIT && opcode != BT_START_SCSI)
|
|
{
|
|
i = BT_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec?*/
|
|
while (--i)
|
|
{
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts & BT_IDLE)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if (!i)
|
|
{
|
|
printf("bt_cmd: bt742a host not idle(0x%x)\n",sts);
|
|
return(ENXIO);
|
|
}
|
|
}
|
|
/*******************************************************\
|
|
* Now that it is idle, if we expect output, preflush the*
|
|
* queue feeding to us. *
|
|
\*******************************************************/
|
|
if (ocnt)
|
|
{
|
|
while((inb(BT_CTRL_STAT_PORT)) & BT_DF)
|
|
inb(BT_CMD_DATA_PORT);
|
|
}
|
|
|
|
/*******************************************************\
|
|
* Output the command and the number of arguments given *
|
|
* for each byte, first check the port is empty. *
|
|
\*******************************************************/
|
|
icnt++; /* include the command */
|
|
while (icnt--)
|
|
{
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
for (i=0; i< wait; i++)
|
|
{
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (!(sts & BT_CDF))
|
|
break;
|
|
}
|
|
if (i >= wait)
|
|
{
|
|
printf("bt_cmd: bt742a cmd/data port full\n");
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return(ENXIO);
|
|
}
|
|
outb(BT_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(BT_CTRL_STAT_PORT);
|
|
for (i=0; i< wait; i++)
|
|
{
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts & BT_DF)
|
|
break;
|
|
}
|
|
if (i >= wait)
|
|
{
|
|
printf("bt_cmd: bt742a cmd/data port empty %d\n",ocnt);
|
|
return(ENXIO);
|
|
}
|
|
oc = inb(BT_CMD_DATA_PORT);
|
|
if (retval)
|
|
*retval++ = oc;
|
|
}
|
|
/*******************************************************\
|
|
* Wait for the board to report a finised instruction *
|
|
\*******************************************************/
|
|
i=BT_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec? */
|
|
while (--i)
|
|
{
|
|
sts = inb(BT_INTR_PORT);
|
|
if (sts & BT_HACC)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if (!i)
|
|
{
|
|
printf("bt_cmd: bt742a host not finished(0x%x)\n",sts);
|
|
return(ENXIO);
|
|
}
|
|
outb(BT_CTRL_STAT_PORT, BT_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 *
|
|
\*******************************************************/
|
|
|
|
btprobe(dev)
|
|
struct isa_dev *dev;
|
|
{
|
|
/***********************************************\
|
|
* find unit and check we have that many defined *
|
|
\***********************************************/
|
|
int unit = btunit;
|
|
#if defined(OSF)
|
|
static ihandler_t bt_handler[NBT];
|
|
static ihandler_id_t *bt_handler_id[NBT];
|
|
register ihandler_t *chp = &bt_handler[unit];;
|
|
#endif /* defined(OSF) */
|
|
|
|
dev->dev_unit = unit;
|
|
bt_base[unit] = dev->dev_addr;
|
|
if(unit >= NBT)
|
|
{
|
|
printf("bt: unit number (%d) too high\n",unit);
|
|
return(0);
|
|
}
|
|
/***********************************************\
|
|
* Try initialise a unit at this location *
|
|
* sets up dma and bus speed, loads bt_int[unit]*
|
|
\***********************************************/
|
|
if (bt_init(unit) != 0)
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/***********************************************\
|
|
* If it's there, put in it's interrupt vectors *
|
|
\***********************************************/
|
|
#ifdef MACH
|
|
dev->dev_pic = bt_int[unit];
|
|
#if defined(OSF) /* OSF */
|
|
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 ((bt_handler_id[unit] = handler_add(chp)) != NULL)
|
|
handler_enable(bt_handler_id[unit]);
|
|
else
|
|
panic("Unable to add bt interrupt handler");
|
|
#else /* CMU */
|
|
take_dev_irq(dev);
|
|
#endif /* !defined(OSF) */
|
|
printf("port=%x spl=%d\n", dev->dev_addr, dev->dev_spl);
|
|
#endif MACH
|
|
#ifdef __386BSD__ /* 386BSD */
|
|
dev->id_irq = (1 << bt_int[unit]);
|
|
dev->id_drq = bt_dma[unit];
|
|
printf("\n **");
|
|
#endif __386BSD__
|
|
|
|
btunit++;
|
|
return(1);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Attach all the sub-devices we can find *
|
|
\***********************************************/
|
|
btattach(dev)
|
|
struct isa_dev *dev;
|
|
{
|
|
int unit = dev->dev_unit;
|
|
|
|
|
|
#ifdef __386BSD__
|
|
printf("bt%d: **probing for scsi devices**\n", unit);
|
|
#endif __386BSD__
|
|
|
|
/***********************************************\
|
|
* ask the adapter what subunits are present *
|
|
\***********************************************/
|
|
scsi_attachdevs( unit, bt_scsi_dev[unit], &bt_switch);
|
|
#if defined(OSF)
|
|
bt_attached[unit]=1;
|
|
#endif /* defined(OSF) */
|
|
if(!unit) /* only one for all boards */
|
|
{
|
|
bt_timeout(0);
|
|
}
|
|
#ifdef __386BSD__
|
|
printf("bt%d",unit);
|
|
#endif __386BSD__
|
|
return;
|
|
}
|
|
|
|
/***********************************************\
|
|
* Return some information to the caller about *
|
|
* the adapter and it's capabilities *
|
|
\***********************************************/
|
|
long int bt_adapter_info(unit)
|
|
int unit;
|
|
{
|
|
return(2); /* 2 outstanding requests at a time per device */
|
|
}
|
|
|
|
/***********************************************\
|
|
* Catch an interrupt from the adaptor *
|
|
\***********************************************/
|
|
btintr(unit)
|
|
{
|
|
BT_MBI *wmbi;
|
|
struct bt_mbx *wmbx;
|
|
struct bt_ccb *ccb;
|
|
unsigned char stat;
|
|
int i,wait;
|
|
int found = 0;
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("btintr ");
|
|
#endif
|
|
/***********************************************\
|
|
* First acknowlege the interrupt, Then if it's *
|
|
* not telling about a completed operation *
|
|
* just return. *
|
|
\***********************************************/
|
|
stat = inb(BT_INTR_PORT);
|
|
|
|
/* Mail Box out empty ? */
|
|
if ( stat & BT_MBOA ) {
|
|
printf("Available Free mbo post\n");
|
|
/* Disable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT,BT_MBO_INTR_EN);
|
|
wait = BT_CMD_TIMEOUT_FUDGE * delaycount;
|
|
for (i=0; i< wait; i++)
|
|
{
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
}
|
|
if (i >= wait)
|
|
{
|
|
printf("bt_intr: bt742a cmd/data port full\n");
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return 1;
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x00); /* Disable */
|
|
wakeup(&bt_mbx[unit]);
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return 1;
|
|
}
|
|
if (! (stat & BT_MBIF)) {
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return 1;
|
|
}
|
|
#if defined(OSF)
|
|
if (!bt_attached[unit])
|
|
{
|
|
return(1);
|
|
}
|
|
#endif /* defined(OSF) */
|
|
/***********************************************\
|
|
* If it IS then process the competed operation *
|
|
\***********************************************/
|
|
wmbx = &bt_mbx[unit];
|
|
wmbi = wmbx->tmbi;
|
|
AGAIN:
|
|
while ( wmbi->stat != BT_MBI_FREE ) {
|
|
found++;
|
|
ccb = (struct bt_ccb *)PHYSTOKV((wmbi->ccb_addr));
|
|
if((stat = wmbi->stat) != BT_MBI_OK)
|
|
{
|
|
switch(stat)
|
|
{
|
|
case BT_MBI_ABORT:
|
|
#ifdef UTEST
|
|
if(bt_debug & BT_SHOWMISC)
|
|
printf("abort ");
|
|
#endif
|
|
ccb->host_stat = BT_ABORTED;
|
|
break;
|
|
|
|
case BT_MBI_UNKNOWN:
|
|
ccb = (struct bt_ccb *)0;
|
|
#ifdef UTEST
|
|
if(bt_debug & BT_SHOWMISC)
|
|
printf("unknown ccb for abort");
|
|
#endif
|
|
break;
|
|
|
|
case BT_MBI_ERROR:
|
|
break;
|
|
|
|
default:
|
|
panic("Impossible mbxi status");
|
|
|
|
}
|
|
#ifdef UTEST
|
|
if((bt_debug & BT_SHOWCMDS ) && ccb)
|
|
{
|
|
u_char *cp;
|
|
cp = 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 addr = 0x%08x\n"
|
|
, wmbi->stat, wmbi );
|
|
printf("addr = 0x%x\n", ccb);
|
|
}
|
|
#endif
|
|
}
|
|
wmbi->stat = BT_MBI_FREE;
|
|
if(ccb)
|
|
{
|
|
bt_remove_timeout(ccb);
|
|
bt_done(unit,ccb);
|
|
}
|
|
|
|
/* Set the IN mail Box pointer for next */
|
|
bt_nextmbx( wmbi, wmbx, mbi );
|
|
}
|
|
if ( !found ) {
|
|
for ( i = 0; i < BT_MBX_SIZE; i++) {
|
|
if ( wmbi->stat != BT_MBI_FREE ) {
|
|
found ++;
|
|
break;
|
|
}
|
|
bt_nextmbx( wmbi, wmbx, mbi );
|
|
}
|
|
if ( !found ) {
|
|
printf("bt%02d: mbi at 0x%08x should be found, stat=%02x..resync\n",
|
|
unit, wmbi, stat );
|
|
} else {
|
|
found = 0;
|
|
goto AGAIN;
|
|
}
|
|
}
|
|
wmbx->tmbi = wmbi;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return(1);
|
|
}
|
|
|
|
/***********************************************\
|
|
* A ccb (and hence a mbx-out is put onto the *
|
|
* free list. *
|
|
\***********************************************/
|
|
bt_free_ccb(unit,ccb, flags)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
unsigned int opri;
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ccb%d(0x%x)> ",unit,flags);
|
|
#endif
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
ccb->next = bt_ccb_free[unit];
|
|
bt_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(&bt_ccb_free[unit]);
|
|
}
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Get a free ccb *
|
|
\***********************************************/
|
|
struct bt_ccb *
|
|
bt_get_ccb(unit,flags)
|
|
{
|
|
unsigned opri;
|
|
struct bt_ccb *rc;
|
|
struct bt_mbx *wmbx; /* Mail Box pointer specified unit */
|
|
BT_MBO *wmbo; /* Out Mail Box pointer */
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("<ccb%d(0x%x) ",unit,flags);
|
|
#endif
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
/***********************************************\
|
|
* If we can and have to, sleep waiting for one *
|
|
* to come free *
|
|
\***********************************************/
|
|
while ((!(rc = bt_ccb_free[unit])) && (!(flags & SCSI_NOSLEEP)))
|
|
{
|
|
sleep(&bt_ccb_free[unit], PRIBIO);
|
|
}
|
|
if (rc)
|
|
{
|
|
/* Get CCB from from free list */
|
|
bt_ccb_free[unit] = rc->next;
|
|
rc->flags = CCB_ACTIVE;
|
|
#ifdef HE
|
|
/* Get the Target OUT mail Box pointer */
|
|
wmbx = &bt_mbx[unit];
|
|
wmbo = wmbx->tmbo;
|
|
while ( wmbo->cmd != BT_MBO_FREE ) {
|
|
/* Enable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT,BT_MBO_INTR_EN);
|
|
printf("Wait free mbo.."); /* AMURAI */
|
|
sleep( wmbx, PRIBIO);
|
|
printf("Got free mbo\n"); /* AMURAI */
|
|
}
|
|
|
|
/* Link CCB to the Mail Box */
|
|
rc->mbx = wmbo;
|
|
wmbo->ccb_addr = KVTOPHYS(rc);
|
|
|
|
/* Set the OUT mail Box pointer for next */
|
|
bt_nextmbx( wmbo, wmbx, mbo );
|
|
wmbx->tmbo = wmbo;
|
|
#endif
|
|
}
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
|
|
return(rc);
|
|
}
|
|
/***********************************************\
|
|
* Get a MBO and then Send it *
|
|
\***********************************************/
|
|
BT_MBO *bt_send_mbo( int unit,
|
|
int flags,
|
|
int cmd,
|
|
struct bt_ccb *ccb )
|
|
{
|
|
unsigned opri;
|
|
BT_MBO *wmbo; /* Mail Box Out pointer */
|
|
struct bt_mbx *wmbx; /* Mail Box pointer specified unit */
|
|
int i, wait;
|
|
|
|
wmbx = &bt_mbx[unit];
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
/* Get the Target OUT mail Box pointer and move to Next */
|
|
wmbo = wmbx->tmbo;
|
|
wmbx->tmbo = ( wmbo == &( wmbx->mbo[BT_MBX_SIZE - 1 ] ) ?
|
|
&(wmbx->mbo[0]) : wmbo + 1 );
|
|
|
|
/*
|
|
* Check the outmail box is free or not
|
|
* Note: Under the normal operation, it shuld NOT happen to wait.
|
|
*/
|
|
while ( wmbo->cmd != BT_MBO_FREE ) {
|
|
|
|
wait = BT_CMD_TIMEOUT_FUDGE * delaycount;
|
|
/* Enable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT,BT_MBO_INTR_EN);
|
|
for (i=0; i< wait; i++)
|
|
{
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
}
|
|
if (i >= wait)
|
|
{
|
|
printf("bt_send_mbo: bt742a cmd/data port full\n");
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return( (BT_MBO *)0 );
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x01); /* Enable */
|
|
sleep( wmbx, PRIBIO);
|
|
}
|
|
|
|
/* Link CCB to the Mail Box */
|
|
wmbo->ccb_addr = KVTOPHYS(ccb);
|
|
ccb->mbx = wmbo;
|
|
wmbo->cmd = cmd;
|
|
|
|
/* Send it ! */
|
|
outb(BT_CMD_DATA_PORT, BT_START_SCSI);
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
|
|
return(wmbo);
|
|
}
|
|
/***********************************************\
|
|
* 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 *
|
|
\***********************************************/
|
|
bt_done(unit,ccb)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct scsi_xfer *xs = ccb->xfer;
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS))
|
|
printf("bt_done ");
|
|
#endif
|
|
/***********************************************\
|
|
* Otherwise, put the results of the operation *
|
|
* into the xfer and call whoever started it *
|
|
\***********************************************/
|
|
if ( ( ccb->host_stat != BT_OK
|
|
|| ccb->target_stat != SCSI_OK)
|
|
&& (!(xs->flags & SCSI_ERR_OK)))
|
|
{
|
|
|
|
s1 = &(ccb->scsi_sense);
|
|
s2 = &(xs->sense);
|
|
|
|
if(ccb->host_stat)
|
|
{
|
|
switch(ccb->host_stat)
|
|
{
|
|
case BT_ABORTED: /* No response */
|
|
case BT_SEL_TIMEOUT: /* No response */
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
{
|
|
printf("timeout reported back\n");
|
|
}
|
|
#endif
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
default: /* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
{
|
|
printf("unexpected host_stat: %x\n",
|
|
ccb->host_stat);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
}
|
|
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 UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
{
|
|
printf("unexpected target_stat: %x\n",
|
|
ccb->target_stat);
|
|
}
|
|
#endif
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
}
|
|
}
|
|
else /* All went correctly OR errors expected */
|
|
{
|
|
xs->resid = 0;
|
|
}
|
|
xs->flags |= ITSDONE;
|
|
bt_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 *
|
|
\***********************************************/
|
|
bt_init(unit)
|
|
int unit;
|
|
{
|
|
unsigned char ad[4];
|
|
volatile int i,sts;
|
|
struct bt_config conf;
|
|
|
|
/***********************************************\
|
|
* reset board, If it doesn't respond, assume *
|
|
* that it's not there.. good for the probe *
|
|
\***********************************************/
|
|
|
|
outb(BT_CTRL_STAT_PORT, BT_HRST|BT_SRST);
|
|
|
|
for (i=0; i < BT_RESET_TIMEOUT; i++)
|
|
{
|
|
sts = inb(BT_CTRL_STAT_PORT) ;
|
|
if ( sts == (BT_IDLE | BT_INIT))
|
|
break;
|
|
}
|
|
if (i >= BT_RESET_TIMEOUT)
|
|
{
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
printf("bt_init: No answer from bt742a board\n");
|
|
#endif
|
|
return(ENXIO);
|
|
}
|
|
|
|
/***********************************************\
|
|
* Assume we have a board at this stage *
|
|
* setup dma channel from jumpers and save int *
|
|
* level *
|
|
\***********************************************/
|
|
#ifdef __386BSD__
|
|
printf("bt%d board settings,",unit);
|
|
#define PRNT(x) printf(x)
|
|
#else __386BSD__
|
|
printf("bt%d:",unit);
|
|
#define PRNT(x) printf(x)
|
|
#endif __386BSD__
|
|
|
|
bt_cmd(unit,0, sizeof(conf), 0 ,&conf, BT_CONF_GET);
|
|
switch(conf.chan)
|
|
{
|
|
case EISADMA:
|
|
bt_dma[unit] = -1;
|
|
PRNT("eisa dma,");
|
|
break;
|
|
case CHAN0:
|
|
outb(0x0b, 0x0c);
|
|
outb(0x0a, 0x00);
|
|
bt_dma[unit] = 0;
|
|
PRNT("dma=0,");
|
|
break;
|
|
case CHAN5:
|
|
outb(0xd6, 0xc1);
|
|
outb(0xd4, 0x01);
|
|
bt_dma[unit] = 5;
|
|
PRNT("dma=5,");
|
|
break;
|
|
case CHAN6:
|
|
outb(0xd6, 0xc2);
|
|
outb(0xd4, 0x02);
|
|
bt_dma[unit] = 6;
|
|
PRNT("dma=6,");
|
|
break;
|
|
case CHAN7:
|
|
outb(0xd6, 0xc3);
|
|
outb(0xd4, 0x03);
|
|
bt_dma[unit] = 7;
|
|
PRNT("dma=7,");
|
|
break;
|
|
default:
|
|
printf("illegal dma setting %x\n",conf.chan);
|
|
return(EIO);
|
|
}
|
|
switch(conf.intr)
|
|
{
|
|
case INT9:
|
|
bt_int[unit] = 9;
|
|
PRNT("int=9,");
|
|
break;
|
|
case INT10:
|
|
bt_int[unit] = 10;
|
|
PRNT("int=10,");
|
|
break;
|
|
case INT11:
|
|
bt_int[unit] = 11;
|
|
PRNT("int=11,");
|
|
break;
|
|
case INT12:
|
|
bt_int[unit] = 12;
|
|
PRNT("int=12,");
|
|
break;
|
|
case INT14:
|
|
bt_int[unit] = 14;
|
|
PRNT("int=14,");
|
|
break;
|
|
case INT15:
|
|
bt_int[unit] = 15;
|
|
PRNT("int=15,");
|
|
break;
|
|
default:
|
|
printf("illegal int setting\n");
|
|
return(EIO);
|
|
}
|
|
/* who are we on the scsi bus */
|
|
bt_scsi_dev[unit] = conf.scsi_dev;
|
|
/***********************************************\
|
|
* Initialize mail box *
|
|
\***********************************************/
|
|
*((physaddr *)ad) = KVTOPHYS(&bt_mbx[unit]);
|
|
bt_cmd(unit,5, 0, 0, 0, BT_MBX_INIT_EXTENDED
|
|
, BT_MBX_SIZE
|
|
, ad[0]
|
|
, ad[1]
|
|
, ad[2]
|
|
, ad[3]);
|
|
|
|
/***********************************************\
|
|
* Set Pointer chain null for just in case *
|
|
* Link the ccb's into a free-list W/O mbox *
|
|
* Initilize Mail Box stat to Free *
|
|
\***********************************************/
|
|
if ( bt_ccb_free[unit] != (struct bt_ccb *)0 ) {
|
|
printf("bt_ccb_free is NOT initialized but init here\n ");
|
|
bt_ccb_free[unit] = (struct bt_ccb *)0;
|
|
}
|
|
for (i=0; i < BT_CCB_SIZE; i++) {
|
|
bt_ccb[unit][i].next = bt_ccb_free[unit];
|
|
bt_ccb_free[unit] = &bt_ccb[unit][i];
|
|
bt_ccb_free[unit]->flags = CCB_FREE;
|
|
}
|
|
for (i=0; i < BT_MBX_SIZE; i++) {
|
|
bt_mbx[unit].mbo[i].cmd = BT_MBO_FREE;
|
|
bt_mbx[unit].mbi[i].stat = BT_MBI_FREE;
|
|
}
|
|
|
|
/***********************************************\
|
|
* Set up Initial mail box for round-robin *
|
|
\***********************************************/
|
|
bt_mbx[unit].tmbo = &bt_mbx[unit].mbo[0];
|
|
bt_mbx[unit].tmbi = &bt_mbx[unit].mbi[0];
|
|
bt_inquire_setup_information( unit );
|
|
|
|
/* Enable round-robin scheme - appeared at FirmWare 3.31 */
|
|
bt_cmd(unit, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_ENABLE );
|
|
|
|
/***********************************************\
|
|
* Note that we are going and return (to probe) *
|
|
\***********************************************/
|
|
bt_initialized[unit]++;
|
|
return( 0 );
|
|
}
|
|
bt_inquire_setup_information( unit )
|
|
int unit;
|
|
{
|
|
struct bt_setup setup;
|
|
struct bt_boardID bID;
|
|
int i;
|
|
|
|
/* Inquire Board ID to Bt742 for FirmWare Version */
|
|
bt_cmd(unit, 0, sizeof(bID), 0, &bID, BT_INQUIRE );
|
|
printf("ver%c.%c,", bID.firm_revision, bID.firm_version );
|
|
|
|
/* Ask setup information to Bt742 */
|
|
bt_cmd(unit, 1, sizeof(setup), 0, &setup, BT_SETUP_GET, sizeof(setup) );
|
|
|
|
if ( setup.sync_neg ) {
|
|
printf("sync,");
|
|
} else {
|
|
printf("async,");
|
|
}
|
|
|
|
if ( setup.parity ) {
|
|
printf("parity,");
|
|
} else {
|
|
printf("no parity,");
|
|
}
|
|
|
|
printf("%dmbxs,%dccbs", setup.num_mbx,
|
|
sizeof(bt_ccb)/(sizeof(struct bt_ccb) * NBT) );
|
|
|
|
for ( i = 0; i < 8; i++ ) {
|
|
if( !setup.sync[i].offset &&
|
|
!setup.sync[i].period &&
|
|
!setup.sync[i].valid )
|
|
continue;
|
|
|
|
printf("\ndev%02d Offset=%d,Transfer period=%d, Synchronous? %s",i,
|
|
setup.sync[i].offset, setup.sync[i].period,
|
|
setup.sync[i].valid ? "Yes" : "No" );
|
|
}
|
|
|
|
}
|
|
|
|
|
|
#ifndef min
|
|
#define min(x,y) (x < y ? x : y)
|
|
#endif min
|
|
|
|
|
|
void btminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
#ifdef MACH
|
|
#if !defined(OSF)
|
|
bp->b_flags |= B_NPAGES; /* can support scat/gather */
|
|
#endif /* defined(OSF) */
|
|
#endif MACH
|
|
if(bp->b_bcount > ((BT_NSEG-1) * PAGESIZ))
|
|
{
|
|
bp->b_bcount = ((BT_NSEG-1) * PAGESIZ);
|
|
}
|
|
}
|
|
|
|
/***********************************************\
|
|
* start a scsi operation given the command and *
|
|
* the data address. Also needs the unit, target *
|
|
* and lu *
|
|
\***********************************************/
|
|
int bt_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct bt_ccb *ccb;
|
|
struct bt_scat_gath *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int i = 0;
|
|
int rc = 0;
|
|
int thiskv;
|
|
physaddr thisphys,nextphys;
|
|
int unit =xs->adapter;
|
|
int bytes_this_seg,bytes_this_page,datalen,flags;
|
|
struct iovec *iovp;
|
|
BT_MBO *mbo;
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("bt_scsi_cmd ");
|
|
#endif
|
|
/***********************************************\
|
|
* 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(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */
|
|
if(flags & ITSDONE)
|
|
{
|
|
printf("Already done?");
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if(!(flags & INUSE))
|
|
{
|
|
printf("Not in use?");
|
|
xs->flags |= INUSE;
|
|
}
|
|
if (!(ccb = bt_get_ccb(unit,flags)))
|
|
{
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(TRY_AGAIN_LATER);
|
|
}
|
|
#ifdef UTEST
|
|
if(bt_debug & BT_SHOWCCBS)
|
|
printf("<start ccb(%x)>",ccb);
|
|
#endif
|
|
/***********************************************\
|
|
* Put all the arguments for the xfer in the ccb *
|
|
\***********************************************/
|
|
ccb->xfer = xs;
|
|
if(flags & SCSI_RESET)
|
|
{
|
|
ccb->opcode = BT_RESET_CCB;
|
|
}
|
|
else
|
|
{
|
|
/* can't use S/G if zero length */
|
|
ccb->opcode = (xs->datalen?
|
|
BT_INIT_SCAT_GATH_CCB
|
|
:BT_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->sense_ptr = KVTOPHYS(&(ccb->scsi_sense));
|
|
ccb->req_sense_length = sizeof(ccb->scsi_sense);
|
|
|
|
if((xs->datalen) && (!(flags & SCSI_RESET)))
|
|
{ /* can use S/G only if not zero length */
|
|
ccb->data_addr = KVTOPHYS(ccb->scat_gath);
|
|
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;
|
|
xs->datalen = 0;
|
|
while ((datalen) && (seg < BT_NSEG))
|
|
{
|
|
sg->seg_addr = (physaddr)iovp->iov_base;
|
|
xs->datalen += sg->seg_len = iovp->iov_len;
|
|
#ifdef UTEST
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x@0x%x)"
|
|
,iovp->iov_len
|
|
,iovp->iov_base);
|
|
#endif
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/***********************************************\
|
|
* Set up the scatter gather block *
|
|
\***********************************************/
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("%d @0x%x:- ",xs->datalen,xs->data);
|
|
#endif
|
|
datalen = xs->datalen;
|
|
thiskv = (int)xs->data;
|
|
thisphys = KVTOPHYS(thiskv);
|
|
|
|
while ((datalen) && (seg < BT_NSEG))
|
|
{
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
sg->seg_addr = thisphys;
|
|
|
|
#ifdef UTEST
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("0x%x",thisphys);
|
|
#endif
|
|
|
|
/* 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 UTEST
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x)",bytes_this_seg);
|
|
#endif
|
|
sg->seg_len = bytes_this_seg;
|
|
sg++;
|
|
seg++;
|
|
}
|
|
} /*end of iov/kv decision */
|
|
ccb->data_length = seg * sizeof(struct bt_scat_gath);
|
|
#ifdef UTEST
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("\n");
|
|
#endif
|
|
if (datalen)
|
|
{ /* there's still data, must have run out of segs! */
|
|
printf("bt_scsi_cmd%d: more than %d DMA segs\n",
|
|
unit,BT_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(unit,ccb,flags);
|
|
return(HAD_ERROR);
|
|
}
|
|
|
|
}
|
|
else
|
|
{ /* No data xfer, use non S/G values */
|
|
ccb->data_addr = (physaddr)0;
|
|
ccb->data_length = 0;
|
|
}
|
|
ccb->link_id = 0;
|
|
ccb->link_addr = (physaddr)0;
|
|
/***********************************************\
|
|
* 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 UTEST
|
|
if(scsi_debug & SHOWCOMMANDS)
|
|
{
|
|
u_char *b = ccb->scsi_cmd;
|
|
if(!(flags & SCSI_RESET))
|
|
{
|
|
int i = 0;
|
|
printf("bt%d:%d:%d-"
|
|
,unit
|
|
,ccb->target
|
|
,ccb->lun);
|
|
while(i < ccb->scsi_cmd_length )
|
|
{
|
|
if(i) printf(",");
|
|
printf("%x",b[i++]);
|
|
}
|
|
printf("-\n");
|
|
}
|
|
else
|
|
{
|
|
printf("bt%d:%d:%d-RESET- "
|
|
,unit
|
|
,ccb->target
|
|
,ccb->lun
|
|
);
|
|
}
|
|
}
|
|
#endif
|
|
if ( bt_send_mbo( unit, flags, BT_MBO_START, ccb ) == (BT_MBO *)0 )
|
|
{
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(unit,ccb,flags);
|
|
return(TRY_AGAIN_LATER);
|
|
}
|
|
/***********************************************\
|
|
* Usually return SUCCESSFULLY QUEUED *
|
|
\***********************************************/
|
|
#ifdef UTEST
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_sent ");
|
|
#endif
|
|
if (!(flags & SCSI_NOMASK))
|
|
{
|
|
bt_add_timeout(ccb,xs->timeout);
|
|
return(SUCCESSFULLY_QUEUED);
|
|
} else
|
|
/***********************************************\
|
|
* If we can't use interrupts, poll on completion*
|
|
\***********************************************/
|
|
{
|
|
int done = 0;
|
|
int count = delaycount * xs->timeout / BT_SCSI_TIMEOUT_FUDGE;
|
|
struct bt_mbx *wmbx = &bt_mbx[unit];
|
|
BT_MBI *wmbi = wmbx->tmbi;
|
|
unsigned char stat;
|
|
#ifdef UTEST
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("wait ");
|
|
#endif
|
|
while((!done) && count)
|
|
{
|
|
stat = inb(BT_INTR_PORT) & (BT_ANY_INTR | BT_MBIF );
|
|
if ( !( stat & BT_ANY_INTR ) ||
|
|
( wmbi->stat == BT_MBI_FREE )||
|
|
(PHYSTOKV(wmbi->ccb_addr)
|
|
!= (int)ccb ) ) {
|
|
count--;
|
|
continue;
|
|
}
|
|
wmbi->stat = BT_MBI_FREE;
|
|
bt_done(unit,ccb);
|
|
done ++;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
/* Set the IN mail Box pointer for next */
|
|
bt_nextmbx( wmbi, wmbx, mbi );
|
|
wmbx->tmbi = wmbi;
|
|
}
|
|
if (!count && !done)
|
|
{
|
|
#ifdef UTEST
|
|
if (!(xs->flags & SCSI_SILENT))
|
|
printf("cmd fail\n");
|
|
#endif
|
|
bt_send_mbo( unit, flags, BT_MBO_ABORT, ccb );
|
|
count = delaycount * 2000 / BT_SCSI_TIMEOUT_FUDGE;
|
|
while((!done) && count)
|
|
{
|
|
if ( !( stat & BT_ANY_INTR ) ||
|
|
( wmbi->stat == BT_MBI_FREE )||
|
|
( PHYSTOKV(wmbi->ccb_addr )
|
|
!= (int)ccb ) ) {
|
|
count--;
|
|
continue;
|
|
}
|
|
wmbi->stat = BT_MBI_FREE;
|
|
bt_done(unit,ccb);
|
|
done ++;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
/* Set the IN mail Box pointer for next */
|
|
bt_nextmbx( wmbi, wmbx, mbi );
|
|
wmbx->tmbi = wmbi;
|
|
}
|
|
if(!count && !done)
|
|
{
|
|
printf("abort failed in wait\n");
|
|
ccb->mbx->cmd = BT_MBO_FREE;
|
|
}
|
|
bt_free_ccb(unit,ccb,flags);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(HAD_ERROR);
|
|
}
|
|
if(xs->error) return(HAD_ERROR);
|
|
return(COMPLETE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* +----------+ +----------+ +----------+
|
|
* bt_soonest--->| later |---->| later|---->| later|--->0
|
|
* | [Delta] | | [Delta] | | [Delta] |
|
|
* 0<-----|sooner |<----|sooner |<----|sooner |<----bt_latest
|
|
* +----------+ +----------+ +----------+
|
|
*
|
|
* bt_furtherest = sum(Delta[1..n])
|
|
*/
|
|
bt_add_timeout(ccb,time)
|
|
struct bt_ccb *ccb;
|
|
int time;
|
|
{
|
|
int timeprev;
|
|
struct bt_ccb *prev;
|
|
int s = splbio();
|
|
|
|
if(prev = bt_latest) /* yes, an assign */
|
|
{
|
|
timeprev = bt_furtherest;
|
|
}
|
|
else
|
|
{
|
|
timeprev = 0;
|
|
}
|
|
while(prev && (timeprev > time))
|
|
{
|
|
timeprev -= prev->delta;
|
|
prev = prev->sooner;
|
|
}
|
|
if(prev)
|
|
{
|
|
ccb->delta = time - timeprev;
|
|
if( ccb->later = prev->later) /* yes an assign */
|
|
{
|
|
ccb->later->sooner = ccb;
|
|
ccb->later->delta -= ccb->delta;
|
|
}
|
|
else
|
|
{
|
|
bt_furtherest = time;
|
|
bt_latest = ccb;
|
|
}
|
|
ccb->sooner = prev;
|
|
prev->later = ccb;
|
|
}
|
|
else
|
|
{
|
|
if( ccb->later = bt_soonest) /* yes, an assign*/
|
|
{
|
|
ccb->later->sooner = ccb;
|
|
ccb->later->delta -= time;
|
|
}
|
|
else
|
|
{
|
|
bt_furtherest = time;
|
|
bt_latest = ccb;
|
|
}
|
|
ccb->delta = time;
|
|
ccb->sooner = (struct bt_ccb *)0;
|
|
bt_soonest = ccb;
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
bt_remove_timeout(ccb)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
int s = splbio();
|
|
|
|
if(ccb->sooner)
|
|
{
|
|
ccb->sooner->later = ccb->later;
|
|
}
|
|
else
|
|
{
|
|
bt_soonest = ccb->later;
|
|
}
|
|
if(ccb->later)
|
|
{
|
|
ccb->later->sooner = ccb->sooner;
|
|
ccb->later->delta += ccb->delta;
|
|
}
|
|
else
|
|
{
|
|
bt_latest = ccb->sooner;
|
|
bt_furtherest -= ccb->delta;
|
|
}
|
|
ccb->sooner = ccb->later = (struct bt_ccb *)0;
|
|
splx(s);
|
|
}
|
|
|
|
|
|
extern int hz;
|
|
#define ONETICK 500 /* milliseconds */
|
|
#define SLEEPTIME ((hz * ONETICK) / 1000)
|
|
bt_timeout(arg)
|
|
int arg;
|
|
{
|
|
struct bt_ccb *ccb;
|
|
int unit;
|
|
int s = splbio();
|
|
|
|
while( ccb = bt_soonest )
|
|
{
|
|
if(ccb->delta <= ONETICK)
|
|
/***********************************************\
|
|
* It has timed out, we need to do some work *
|
|
\***********************************************/
|
|
{
|
|
unit = ccb->xfer->adapter;
|
|
printf("bt%d:%d device timed out\n",unit
|
|
,ccb->xfer->targ);
|
|
if(bt_debug & BT_SHOWCCBS)
|
|
tfs_print_active_ccbs();
|
|
|
|
/***************************************\
|
|
* Unlink it from the queue *
|
|
\***************************************/
|
|
bt_remove_timeout(ccb);
|
|
/***************************************\
|
|
* If The ccb's mbx is not free, then *
|
|
* the board has gone Far East ? *
|
|
\***************************************/
|
|
if((struct bt_ccb *)PHYSTOKV(ccb->mbx->ccb_addr)==ccb &&
|
|
ccb->mbx->cmd != BT_MBO_FREE )
|
|
{
|
|
printf("bt%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("Abort Operation has timed out.\n");
|
|
ccb->xfer->retries = 0; /* I MEAN IT ! */
|
|
ccb->host_stat = BT_ABORTED;
|
|
bt_done(unit,ccb);
|
|
}
|
|
else /* abort the operation that has timed out */
|
|
{
|
|
printf("Try to abort\n");
|
|
bt_send_mbo( unit, ~SCSI_NOMASK,
|
|
BT_MBO_ABORT, ccb );
|
|
/* 2 secs for the abort */
|
|
bt_add_timeout(ccb,2000 + ONETICK);
|
|
ccb->flags = CCB_ABORTED;
|
|
}
|
|
}
|
|
else
|
|
/***********************************************\
|
|
* It has not timed out, adjust and leave *
|
|
\***********************************************/
|
|
{
|
|
ccb->delta -= ONETICK;
|
|
bt_furtherest -= ONETICK;
|
|
break;
|
|
}
|
|
}
|
|
splx(s);
|
|
timeout(bt_timeout,arg,SLEEPTIME);
|
|
}
|
|
|
|
tfs_print_ccb(ccb)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
printf("ccb:%x op:%x cmdlen:%d senlen:%d\n"
|
|
,ccb
|
|
,ccb->opcode
|
|
,ccb->scsi_cmd_length
|
|
,ccb->req_sense_length);
|
|
printf(" datlen:%d hstat:%x tstat:%x delta:%d flags:%x\n"
|
|
,ccb->data_length
|
|
,ccb->host_stat
|
|
,ccb->target_stat
|
|
,ccb->delta
|
|
,ccb->flags);
|
|
}
|
|
|
|
tfs_print_active_ccbs()
|
|
{
|
|
struct bt_ccb *ccb;
|
|
ccb = bt_soonest;
|
|
|
|
while(ccb)
|
|
{
|
|
tfs_print_ccb(ccb);
|
|
ccb = ccb->later;
|
|
}
|
|
printf("Furtherest = %d\n",bt_furtherest);
|
|
}
|