1303 lines
33 KiB
C
1303 lines
33 KiB
C
/*
|
||
* Ported for use with the UltraStor 14f by Gary Close (gclose@wvnvms.wvnet.edu)
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* Thanks to Julian Elischer for advice and help with this port.
|
||
*
|
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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.
|
||
*
|
||
* 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
|
||
* 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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||
* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
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||
* -------------------- ----- ----------------------
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||
* CURRENT PATCH LEVEL: 1 00098
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* -------------------- ----- ----------------------
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||
*
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||
* 16 Feb 93 Julian Elischer ADDED for SCSI system
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* commenced: Sun Sep 27 18:14:01 PDT 1992
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*/
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#include <sys/types.h>
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#include <uha.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/include/pio.h>
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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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/* */
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#ifdef __386BSD__
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#ifdef DDB
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int Debugger();
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#else
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#define Debugger() panic("should call debugger here")
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#endif /*!DDB*/
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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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typedef struct {unsigned char addr[4]; } physaddr;
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typedef struct {unsigned char len[4]; } physlen;
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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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extern int delaycount; /* from clock setup code */
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#define NUM_CONCURRENT 16 /* number of concurrent ops per board */
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#define UHA_NSEG 33 /* number of dma segments supported */
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#define FUDGE(X) (X>>1) /* our loops are slower than spinwait() */
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/* */
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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 UHA_LMASK (0x000) /* local doorbell mask reg */
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#define UHA_LINT (0x001) /* local doorbell int/stat reg */
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#define UHA_SMASK (0x002) /* system doorbell mask reg */
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#define UHA_SINT (0x003) /* system doorbell int/stat reg */
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#define UHA_ID0 (0x004) /* product id reg 0 */
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#define UHA_ID1 (0x005) /* product id reg 1 */
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#define UHA_CONF1 (0x006) /* config reg 1 */
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#define UHA_CONF2 (0x007) /* config reg 2 */
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#define UHA_OGM0 (0x008) /* outgoing mail ptr 0 least sig */
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#define UHA_OGM1 (0x009) /* outgoing mail ptr 1 least mid */
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#define UHA_OGM2 (0x00a) /* outgoing mail ptr 2 most mid */
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#define UHA_OGM3 (0x00b) /* outgoing mail ptr 3 most sig */
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#define UHA_ICM0 (0x00c) /* incoming mail ptr 0 */
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#define UHA_ICM1 (0x00d) /* incoming mail ptr 1 */
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#define UHA_ICM2 (0x00e) /* incoming mail ptr 2 */
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#define UHA_ICM3 (0x00f) /* incoming mail ptr 3 */
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/*
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* UHA_LMASK bits (read only)
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*/
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#define UHA_LDIE 0x80 /* local doorbell int enabled */
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#define UHA_SRSTE 0x40 /* soft reset enabled */
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#define UHA_ABORTEN 0x10 /* abort MSCP enabled */
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#define UHA_OGMINTEN 0x01 /* outgoing mail interrupt enabled */
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/*
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* UHA_LINT bits (read)
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*/
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#define UHA_LDIP 0x80 /* local doorbell int pending */
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/*
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* UHA_LINT bits (write)
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*/
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#define UHA_ADRST 0x40 /* adapter soft reset */
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#define UHA_SBRST 0x20 /* scsi bus reset */
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#define UHA_ASRST 0x60 /* adapter and scsi reset */
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#define UHA_ABORT 0x10 /* abort MSCP */
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#define UHA_OGMINT 0x01 /* tell adapter to get mail */
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/*
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* UHA_SMASK bits (read)
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*/
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#define UHA_SINTEN 0x80 /* system doorbell interupt Enabled */
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#define UHA_ABORT_COMPLETE_EN 0x10 /* abort MSCP command complete int Enabled */
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#define UHA_ICM_ENABLED 0x01 /* ICM interrupt enabled
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/*
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* UHA_SMASK bits (write)
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*/
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#define UHA_ENSINT 0x80 /* enable system doorbell interrupt */
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#define UHA_EN_ABORT_COMPLETE 0x10 /* enable abort MSCP complete int */
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#define UHA_ENICM 0x01 /* enable ICM interrupt */
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/*
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* UHA_SINT bits (read)
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*/
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#define UHA_SINTP 0x80 /* system doorbell int pending */
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#define UHA_ABORT_SUCC 0x10 /* abort MSCP successful */
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#define UHA_ABORT_FAIL 0x18 /* abort MSCP failed */
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/*
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* UHA_SINT bits (write)
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*/
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#define UHA_ABORT_ACK 0x18 /* acknowledge status and clear */
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#define UHA_ICM_ACK 0x01 /* acknowledge ICM and clear */
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/*
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* UHA_CONF1 bits (read only)
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*/
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#define UHA_DMA_CH5 0x00 /* DMA channel 5 */
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#define UHA_DMA_CH6 0x40 /* 6 */
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#define UHA_DMA_CH7 0x80 /* 7 */
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#define UHA_IRQ15 0x00 /* IRQ 15 */
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#define UHA_IRQ14 0x10 /* 14 */
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#define UHA_IRQ11 0x20 /* 11 */
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#define UHA_IRQ10 0x30 /* 10 */
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/***********************************
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* ha_status error codes
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\***********************************/
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#define UHA_NO_ERR 0x00 /* No error supposedly */
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#define UHA_SBUS_ABORT_ERR 0x84 /* scsi bus abort error */
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#define UHA_SBUS_TIMEOUT 0x91 /* scsi bus selection timeout */
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#define UHA_SBUS_OVER_UNDER 0x92 /* scsi bus over/underrun */
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#define UHA_BAD_SCSI_CMD 0x96 /* illegal scsi command */
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#define UHA_AUTO_SENSE_ERR 0x9b /* auto request sense err */
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#define UHA_SBUS_RES_ERR 0xa3 /* scsi bus reset error */
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#define UHA_BAD_SG_LIST 0xff /* invalid scatter gath list */
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/* */
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struct uha_dma_seg
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{
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physaddr addr;
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physlen len;
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};
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/* */
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struct mscp
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{
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unsigned char opcode:3;
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#define U14_HAC 0x01 /*host adapter command*/
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#define U14_TSP 0x02 /*target scsi pass through command*/
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#define U14_SDR 0x04 /*scsi device reset*/
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unsigned char xdir:2; /*xfer direction*/
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#define U14_SDET 0x00 /*determined by scsi command*/
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#define U14_SDIN 0x01 /*scsi data in*/
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#define U14_SDOUT 0x02 /*scsi data out*/
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#define U14_NODATA 0x03 /*no data xfer*/
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unsigned char dcn:1; /*disable disconnect for this command*/
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unsigned char ca:1; /*Cache control*/
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unsigned char sgth:1; /*scatter gather flag*/
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unsigned char target:3;
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unsigned char chan:2; /*scsi channel (always 0 for 14f)*/
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unsigned char lun:3;
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physaddr data;
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physlen datalen;
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physaddr link;
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unsigned char link_id;
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unsigned char sg_num; /*number of scat gath segs */
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/*in s-g list if sg flag is*/
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/*set. starts at 1, 8bytes per*/
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unsigned char senselen;
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unsigned char cdblen;
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unsigned char cdb[12];
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unsigned char ha_status;
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unsigned char targ_status;
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physaddr sense; /* if 0 no auto sense */
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/*-----------------end of hardware supported fields----------------*/
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struct mscp *next; /* in free list */
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struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
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long int delta; /* difference from previous*/
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struct mscp *later,*sooner;
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int flags;
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#define MSCP_FREE 0
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#define MSCP_ACTIVE 1
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#define MSCP_ABORTED 2
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struct uha_dma_seg uha_dma[UHA_NSEG];
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struct scsi_sense_data mscp_sense;
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};
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struct mscp *uha_soonest = (struct mscp *)0;
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struct mscp *uha_latest = (struct mscp *)0;
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long int uha_furtherest = 0; /* longest time in the timeout queue */
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/* */
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struct uha_data
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{
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int flags;
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#define UHA_INIT 0x01;
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int baseport;
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struct mscp mscps[NUM_CONCURRENT];
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struct mscp *free_mscp;
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int our_id; /* our scsi id */
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int vect;
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int dma;
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} uha_data[NUHA];
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int uhaprobe();
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int uha_attach();
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int uhaintr();
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int uha_scsi_cmd();
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int uha_timeout();
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int uha_abort();
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struct mscp *cheat;
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void uhaminphys();
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long int uha_adapter_info();
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unsigned long int scratch;
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#ifdef MACH
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struct isa_driver uhadriver = { uhaprobe, 0, uha_attach, "uha", 0, 0, 0};
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int (*uhaintrs[])() = {uhaintr, 0};
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#endif MACH
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#ifdef __386BSD__
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struct isa_driver uhadriver = { uhaprobe, uha_attach, "uha"};
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#endif __386BSD__
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static uha_unit = 0;
|
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int uha_debug = 0;
|
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#define UHA_SHOWMSCPS 0x01
|
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#define UHA_SHOWINTS 0x02
|
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#define UHA_SHOWCMDS 0x04
|
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#define UHA_SHOWMISC 0x08
|
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#define FAIL 1
|
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#define SUCCESS 0
|
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#define PAGESIZ 4096
|
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|
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struct scsi_switch uha_switch =
|
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{
|
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uha_scsi_cmd,
|
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uhaminphys,
|
||
0,
|
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0,
|
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uha_adapter_info,
|
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0,0,0
|
||
};
|
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|
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/* */
|
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/***********************************************************************\
|
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* Function to send a command out through a mailbox *
|
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\***********************************************************************/
|
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uha_send_mbox( int unit
|
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,struct mscp *mscp)
|
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{
|
||
int port = uha_data[unit].baseport;
|
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int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
|
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int s = splbio();
|
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|
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while( ((inb(port + UHA_LINT) & (UHA_LDIP))
|
||
!= (0))
|
||
&& (spincount--));
|
||
if(spincount == -1)
|
||
{
|
||
printf("uha%d: board not responding\n",unit);
|
||
Debugger();
|
||
}
|
||
|
||
outl(port + UHA_OGM0,KVTOPHYS(mscp));
|
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outb(port + UHA_LINT, (UHA_OGMINT));
|
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splx(s);
|
||
}
|
||
|
||
/***********************************************************************\
|
||
* Function to send abort to 14f *
|
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\***********************************************************************/
|
||
|
||
uha_abort( int unit
|
||
,struct mscp *mscp)
|
||
{
|
||
int port = uha_data[unit].baseport;
|
||
int spincount = FUDGE(delaycount) * 1;
|
||
int abortcount = FUDGE(delaycount) * 2000;
|
||
int s = splbio();
|
||
|
||
while(((inb(port + UHA_LINT) & (UHA_LDIP))
|
||
!= (0))
|
||
&& (spincount--));
|
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if(spincount == -1);
|
||
{
|
||
printf("uha%d: board not responding\n",unit);
|
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Debugger();
|
||
}
|
||
|
||
outl(port + UHA_OGM0,KVTOPHYS(mscp));
|
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outb(port + UHA_LINT,UHA_ABORT);
|
||
|
||
while((abortcount--) && (!(inb(port + UHA_SINT) & UHA_ABORT_FAIL)));
|
||
if(abortcount == -1)
|
||
{
|
||
printf("uha%d: board not responding\n",unit);
|
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Debugger();
|
||
}
|
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if((inb(port + UHA_SINT) & 0x10) != 0)
|
||
{
|
||
outb(port + UHA_SINT,UHA_ABORT_ACK);
|
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return(1);
|
||
}
|
||
else
|
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{
|
||
outb(port + UHA_SINT,UHA_ABORT_ACK);
|
||
return(0);
|
||
}
|
||
}
|
||
|
||
/***********************************************************************\
|
||
* Function to poll for command completion when in poll mode *
|
||
\***********************************************************************/
|
||
uha_poll(int unit ,int wait) /* in msec */
|
||
{
|
||
int port = uha_data[unit].baseport;
|
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int spincount = FUDGE(delaycount) * wait; /* in msec */
|
||
int stport = port + UHA_SINT;
|
||
int start = spincount;
|
||
|
||
retry:
|
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while( (spincount--) && (!(inb(stport) & UHA_SINTP)));
|
||
if(spincount == -1)
|
||
{
|
||
printf("uha%d: board not responding\n",unit);
|
||
return(EIO);
|
||
}
|
||
if ((int)cheat != PHYSTOKV(inl(port + UHA_ICM0)))
|
||
{
|
||
printf("discarding %x ",inl(port + UHA_ICM0));
|
||
outb(port + UHA_SINT, UHA_ICM_ACK);
|
||
spinwait(50);
|
||
goto retry;
|
||
}/* don't know this will work */
|
||
uhaintr(unit);
|
||
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 *
|
||
\*******************************************************/
|
||
uhaprobe(dev)
|
||
struct isa_dev *dev;
|
||
{
|
||
int unit = uha_unit;
|
||
dev->dev_unit = unit;
|
||
uha_data[unit].baseport = dev->dev_addr;
|
||
if(unit >= NUHA)
|
||
{
|
||
printf("uha: unit number (%d) too high\n",unit);
|
||
return(0);
|
||
}
|
||
|
||
/*try and initialize unit at this location*/
|
||
if (uha_init(unit) != 0)
|
||
{
|
||
return(0);
|
||
}
|
||
|
||
/* if its there put in it's interrupt and DRQ vectors */
|
||
|
||
dev->id_irq = (1 << uha_data[unit].vect);
|
||
dev->id_drq = uha_data[unit].dma;
|
||
|
||
|
||
uha_unit ++;
|
||
return(1);
|
||
}
|
||
|
||
/***********************************************\
|
||
* Attach all the sub-devices we can find *
|
||
\***********************************************/
|
||
uha_attach(dev)
|
||
struct isa_dev *dev;
|
||
{
|
||
int unit = dev->dev_unit;
|
||
|
||
|
||
#ifdef __386BSD__
|
||
printf("uha%d: probing for scsi devices..", unit);
|
||
#endif __386BSD__
|
||
|
||
/***********************************************\
|
||
* ask the adapter what subunits are present *
|
||
\***********************************************/
|
||
scsi_attachdevs( unit, uha_data[unit].our_id, &uha_switch);
|
||
|
||
#if defined(OSF)
|
||
uha_attached[unit]=1;
|
||
#endif /* defined(OSF) */
|
||
if(!unit) /* only one for all boards */
|
||
{
|
||
uha_timeout(0);
|
||
}
|
||
return;
|
||
}
|
||
|
||
/***********************************************\
|
||
* Return some information to the caller about *
|
||
* the adapter and it's capabilities *
|
||
\***********************************************/
|
||
long int uha_adapter_info(unit)
|
||
int unit;
|
||
{
|
||
return(2); /* 2 outstanding requests at a time per device */
|
||
}
|
||
|
||
/***********************************************\
|
||
* Catch an interrupt from the adaptor *
|
||
\***********************************************/
|
||
uhaintr(unit)
|
||
{
|
||
struct mscp *mscp;
|
||
u_char uhastat;
|
||
unsigned long int mboxval;
|
||
|
||
int port = uha_data[unit].baseport;
|
||
|
||
|
||
if(scsi_debug & PRINTROUTINES)
|
||
printf("uhaintr ");
|
||
|
||
#if defined(OSF)
|
||
if (!uha_attached[unit])
|
||
{
|
||
return(1);
|
||
}
|
||
#endif /* defined(OSF) */
|
||
while(inb(port + UHA_SINT) & UHA_SINTP)
|
||
{
|
||
/***********************************************\
|
||
* First get all the information and then *
|
||
* acknowlege the interrupt *
|
||
\***********************************************/
|
||
uhastat = inb(port + UHA_SINT);
|
||
mboxval = inl(port + UHA_ICM0);
|
||
outb(port + UHA_SINT,UHA_ICM_ACK);
|
||
|
||
if(scsi_debug & TRACEINTERRUPTS)
|
||
printf("status = 0x%x ",uhastat);
|
||
/***********************************************\
|
||
* Process the completed operation *
|
||
\***********************************************/
|
||
|
||
mscp = (struct mscp *)(PHYSTOKV(mboxval));
|
||
|
||
if(uha_debug & UHA_SHOWCMDS )
|
||
{
|
||
uha_show_scsi_cmd(mscp->xs);
|
||
}
|
||
if((uha_debug & UHA_SHOWMSCPS) && mscp)
|
||
printf("<int mscp(%x)>",mscp);
|
||
uha_remove_timeout(mscp);
|
||
|
||
uha_done(unit,mscp);
|
||
}
|
||
return(1);
|
||
}
|
||
|
||
/***********************************************\
|
||
* We have a mscp which has been processed by the *
|
||
* adaptor, now we look to see how the operation *
|
||
* went. *
|
||
\***********************************************/
|
||
|
||
uha_done(unit,mscp)
|
||
int unit;
|
||
struct mscp *mscp;
|
||
{
|
||
struct scsi_sense_data *s1,*s2;
|
||
struct scsi_xfer *xs = mscp->xs;
|
||
|
||
if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS))
|
||
printf("uha_done ");
|
||
/***********************************************\
|
||
* Otherwise, put the results of the operation *
|
||
* into the xfer and call whoever started it *
|
||
\***********************************************/
|
||
if ( (mscp->ha_status == UHA_NO_ERR) || (xs->flags & SCSI_ERR_OK))
|
||
{ /* All went correctly OR errors expected */
|
||
xs->resid = 0;
|
||
xs->error = 0;
|
||
}
|
||
else
|
||
{
|
||
|
||
s1 = &(mscp->mscp_sense);
|
||
s2 = &(xs->sense);
|
||
|
||
if(mscp->ha_status != UHA_NO_ERR)
|
||
{
|
||
switch(mscp->ha_status)
|
||
{
|
||
case UHA_SBUS_TIMEOUT: /* No response */
|
||
if (uha_debug & UHA_SHOWMISC)
|
||
{
|
||
printf("timeout reported back\n");
|
||
}
|
||
xs->error = XS_TIMEOUT;
|
||
break;
|
||
case UHA_SBUS_OVER_UNDER:
|
||
if (uha_debug & UHA_SHOWMISC)
|
||
{
|
||
printf("scsi bus xfer over/underrun\n");
|
||
}
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
break;
|
||
case UHA_BAD_SG_LIST:
|
||
if (uha_debug & UHA_SHOWMISC)
|
||
{
|
||
printf("bad sg list reported back\n");
|
||
}
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
break;
|
||
default: /* Other scsi protocol messes */
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
if (uha_debug & UHA_SHOWMISC)
|
||
{
|
||
printf("unexpected ha_status: %x\n",
|
||
mscp->ha_status);
|
||
}
|
||
}
|
||
|
||
}
|
||
else
|
||
{
|
||
|
||
if (mscp->targ_status != 0)
|
||
/**************************************************************************\
|
||
* I have no information for any possible value of target status field *
|
||
* other than 0 means no error!! So I guess any error is unexpected in that *
|
||
* event!! *
|
||
\**************************************************************************/
|
||
|
||
{
|
||
if (uha_debug & UHA_SHOWMISC)
|
||
{
|
||
printf("unexpected targ_status: %x\n",
|
||
mscp->targ_status);
|
||
}
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
}
|
||
}
|
||
}
|
||
done: xs->flags |= ITSDONE;
|
||
uha_free_mscp(unit,mscp, xs->flags);
|
||
if(xs->when_done)
|
||
(*(xs->when_done))(xs->done_arg,xs->done_arg2);
|
||
}
|
||
|
||
/***********************************************\
|
||
* A mscp (and hence a mbx-out is put onto the *
|
||
* free list. *
|
||
\***********************************************/
|
||
uha_free_mscp(unit,mscp, flags)
|
||
struct mscp *mscp;
|
||
{
|
||
unsigned int opri;
|
||
|
||
if(scsi_debug & PRINTROUTINES)
|
||
printf("mscp%d(0x%x)> ",unit,flags);
|
||
if (!(flags & SCSI_NOMASK))
|
||
opri = splbio();
|
||
|
||
mscp->next = uha_data[unit].free_mscp;
|
||
uha_data[unit].free_mscp = mscp;
|
||
mscp->flags = MSCP_FREE;
|
||
/***********************************************\
|
||
* If there were none, wake abybody waiting for *
|
||
* one to come free, starting with queued entries*
|
||
\***********************************************/
|
||
if (!mscp->next) {
|
||
wakeup(&uha_data[unit].free_mscp);
|
||
}
|
||
if (!(flags & SCSI_NOMASK))
|
||
splx(opri);
|
||
}
|
||
|
||
/***********************************************\
|
||
* Get a free mscp (and hence mbox-out entry) *
|
||
\***********************************************/
|
||
struct mscp *
|
||
uha_get_mscp(unit,flags)
|
||
{
|
||
unsigned opri;
|
||
struct mscp *rc;
|
||
|
||
if(scsi_debug & PRINTROUTINES)
|
||
printf("<mscp%d(0x%x) ",unit,flags);
|
||
if (!(flags & SCSI_NOMASK))
|
||
opri = splbio();
|
||
/***********************************************\
|
||
* If we can and have to, sleep waiting for one *
|
||
* to come free *
|
||
\***********************************************/
|
||
while ((!(rc = uha_data[unit].free_mscp)) && (!(flags & SCSI_NOSLEEP)))
|
||
{
|
||
sleep(&uha_data[unit].free_mscp, PRIBIO);
|
||
}
|
||
if (rc)
|
||
{
|
||
uha_data[unit].free_mscp = rc->next;
|
||
rc->flags = MSCP_ACTIVE;
|
||
}
|
||
if (!(flags & SCSI_NOMASK))
|
||
splx(opri);
|
||
return(rc);
|
||
}
|
||
|
||
|
||
|
||
/***********************************************\
|
||
* Start the board, ready for normal operation *
|
||
\***********************************************/
|
||
|
||
uha_init(unit)
|
||
int unit;
|
||
{
|
||
unsigned char ad[4];
|
||
volatile unsigned char model;
|
||
volatile unsigned char submodel;
|
||
unsigned char config_reg1;
|
||
unsigned char config_reg2;
|
||
unsigned char dma_ch;
|
||
unsigned char irq_ch;
|
||
unsigned char uha_id;
|
||
int port = uha_data[unit].baseport;
|
||
int i;
|
||
int resetcount = FUDGE(delaycount) * 4000;
|
||
|
||
model = inb(port + UHA_ID0);
|
||
submodel = inb(port + UHA_ID1);
|
||
if ((model != 0x56) & (submodel != 0x40))
|
||
{ printf("ultrastor 14f not responding\n");
|
||
return(ENXIO); }
|
||
|
||
printf("uha%d reading board settings, ",unit);
|
||
|
||
config_reg1 = inb(port + UHA_CONF1);
|
||
config_reg2 = inb(port + UHA_CONF2);
|
||
dma_ch = (config_reg1 & 0xc0);
|
||
irq_ch = (config_reg1 & 0x30);
|
||
uha_id = (config_reg2 & 0x07);
|
||
|
||
switch(dma_ch)
|
||
{
|
||
case UHA_DMA_CH5:
|
||
uha_data[unit].dma = 5;
|
||
printf("dma=5 ");
|
||
break;
|
||
case UHA_DMA_CH6:
|
||
uha_data[unit].dma = 6;
|
||
printf("dma=6 ");
|
||
break;
|
||
case UHA_DMA_CH7:
|
||
uha_data[unit].dma = 7;
|
||
printf("dma=7 ");
|
||
break;
|
||
default:
|
||
printf("illegal dma jumper setting\n");
|
||
return(EIO);
|
||
}
|
||
switch(irq_ch)
|
||
{
|
||
case UHA_IRQ10:
|
||
uha_data[unit].vect = 10;
|
||
printf("int=10 ");
|
||
break;
|
||
case UHA_IRQ11:
|
||
uha_data[unit].vect = 11;
|
||
printf("int=11 ");
|
||
break;
|
||
case UHA_IRQ14:
|
||
uha_data[unit].vect = 14;
|
||
printf("int=14 ");
|
||
break;
|
||
case UHA_IRQ15:
|
||
uha_data[unit].vect = 15;
|
||
printf("int=15 ");
|
||
break;
|
||
default:
|
||
printf("illegal int jumper setting\n");
|
||
return(EIO);
|
||
}
|
||
/* who are we on the scsi bus */
|
||
printf("id=%x\n",uha_id);
|
||
uha_data[unit].our_id = uha_id;
|
||
|
||
|
||
/***********************************************\
|
||
* link up all our MSCPs into a free list *
|
||
\***********************************************/
|
||
for (i=0; i < NUM_CONCURRENT; i++)
|
||
{
|
||
uha_data[unit].mscps[i].next = uha_data[unit].free_mscp;
|
||
uha_data[unit].free_mscp = &uha_data[unit].mscps[i];
|
||
uha_data[unit].free_mscp->flags = MSCP_FREE;
|
||
}
|
||
|
||
/***********************************************\
|
||
* Note that we are going and return (to probe) *
|
||
\***********************************************/
|
||
outb(port + UHA_LINT, UHA_ASRST);
|
||
while( (resetcount--) && (!(inb(port + UHA_LINT))));
|
||
if(resetcount == -1)
|
||
{
|
||
printf("uha%d: board timed out during reset\n",unit);
|
||
return(ENXIO);
|
||
}
|
||
|
||
outb(port + UHA_SMASK, 0x81); /* make sure interrupts are enabled */
|
||
uha_data[unit].flags |= UHA_INIT;
|
||
return(0);
|
||
}
|
||
|
||
|
||
|
||
#ifndef min
|
||
#define min(x,y) (x < y ? x : y)
|
||
#endif min
|
||
|
||
|
||
void uhaminphys(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 > ((UHA_NSEG-1) * PAGESIZ))
|
||
{
|
||
bp->b_bcount = ((UHA_NSEG-1) * PAGESIZ);
|
||
}
|
||
}
|
||
|
||
/***********************************************\
|
||
* start a scsi operation given the command and *
|
||
* the data address. Also needs the unit, target *
|
||
* and lu *
|
||
\***********************************************/
|
||
int uha_scsi_cmd(xs)
|
||
struct scsi_xfer *xs;
|
||
{
|
||
struct scsi_sense_data *s1,*s2;
|
||
struct mscp *mscp;
|
||
struct uha_dma_seg *sg;
|
||
int seg; /* scatter gather seg being worked on */
|
||
int i = 0;
|
||
int rc = 0;
|
||
int thiskv;
|
||
unsigned long int thisphys,nextphys;
|
||
int unit =xs->adapter;
|
||
int bytes_this_seg,bytes_this_page,datalen,flags;
|
||
struct iovec *iovp;
|
||
int s;
|
||
unsigned int stat;
|
||
int port = uha_data[unit].baseport;
|
||
unsigned long int templen;
|
||
|
||
|
||
if(scsi_debug & PRINTROUTINES)
|
||
printf("uha_scsi_cmd ");
|
||
/***********************************************\
|
||
* get a mscp (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 (!(mscp = uha_get_mscp(unit,flags)))
|
||
{
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
return(TRY_AGAIN_LATER);
|
||
}
|
||
|
||
cheat = mscp;
|
||
if(uha_debug & UHA_SHOWMSCPS)
|
||
printf("<start mscp(%x)>",mscp);
|
||
if(scsi_debug & SHOWCOMMANDS)
|
||
{
|
||
uha_show_scsi_cmd(xs);
|
||
}
|
||
mscp->xs = xs;
|
||
/***********************************************\
|
||
* Put all the arguments for the xfer in the mscp *
|
||
\***********************************************/
|
||
|
||
if (flags & SCSI_RESET)
|
||
{
|
||
mscp->opcode = 0x04;
|
||
mscp->ca = 0x01;
|
||
}
|
||
else
|
||
{
|
||
mscp->opcode = 0x02;
|
||
mscp->ca = 0x01;
|
||
}
|
||
|
||
if (flags & SCSI_DATA_IN)
|
||
{
|
||
mscp->xdir = 0x01;
|
||
}
|
||
if (flags & SCSI_DATA_OUT)
|
||
{
|
||
mscp->xdir = 0x02;
|
||
}
|
||
|
||
if (xs->lu != 0)
|
||
{
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
uha_free_mscp(unit,mscp,flags);
|
||
return(HAD_ERROR);
|
||
}
|
||
|
||
mscp->dcn = 0x00;
|
||
mscp->chan = 0x00;
|
||
mscp->target = xs->targ;
|
||
mscp->lun = xs->lu;
|
||
mscp->link.addr[0] = 0x00;
|
||
mscp->link.addr[1] = 0x00;
|
||
mscp->link.addr[2] = 0x00;
|
||
mscp->link.addr[3] = 0x00;
|
||
mscp->link_id = 0x00;
|
||
mscp->cdblen = xs->cmdlen;
|
||
scratch = KVTOPHYS(&(mscp->mscp_sense));
|
||
mscp->sense.addr[0] = (scratch & 0xff);
|
||
mscp->sense.addr[1] = ((scratch >> 8) & 0xff);
|
||
mscp->sense.addr[2] = ((scratch >> 16) & 0xff);
|
||
mscp->sense.addr[3] = ((scratch >> 24) & 0xff);
|
||
mscp->senselen = sizeof(mscp->mscp_sense);
|
||
mscp->ha_status = 0x00;
|
||
mscp->targ_status = 0x00;
|
||
|
||
if(xs->datalen)
|
||
{ /* should use S/G only if not zero length */
|
||
scratch = KVTOPHYS(mscp->uha_dma);
|
||
mscp->data.addr[0] = (scratch & 0xff);
|
||
mscp->data.addr[1] = ((scratch >> 8) & 0xff);
|
||
mscp->data.addr[2] = ((scratch >> 16) & 0xff);
|
||
mscp->data.addr[3] = ((scratch >> 24) & 0xff);
|
||
sg = mscp->uha_dma ;
|
||
seg = 0;
|
||
mscp->sgth = 0x01;
|
||
|
||
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 < UHA_NSEG))
|
||
{
|
||
scratch = (unsigned long)iovp->iov_base;
|
||
sg->addr.addr[0] = (scratch & 0xff);
|
||
sg->addr.addr[1] = ((scratch >> 8) & 0xff);
|
||
sg->addr.addr[2] = ((scratch >> 16) & 0xff);
|
||
sg->addr.addr[3] = ((scratch >> 24) & 0xff);
|
||
xs->datalen += *(unsigned long *)sg->len.len = iovp->iov_len;
|
||
if(scsi_debug & SHOWSCATGATH)
|
||
printf("(0x%x@0x%x)"
|
||
,iovp->iov_len
|
||
,iovp->iov_base);
|
||
sg++;
|
||
iovp++;
|
||
seg++;
|
||
datalen--;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/***********************************************\
|
||
* Set up the scatter gather block *
|
||
\***********************************************/
|
||
|
||
if(scsi_debug & SHOWSCATGATH)
|
||
printf("%d @0x%x:- ",xs->datalen,xs->data);
|
||
datalen = xs->datalen;
|
||
thiskv = (int)xs->data;
|
||
thisphys = KVTOPHYS(thiskv);
|
||
templen = 0;
|
||
|
||
while ((datalen) && (seg < UHA_NSEG))
|
||
{
|
||
bytes_this_seg = 0;
|
||
|
||
/* put in the base address */
|
||
sg->addr.addr[0] = (thisphys & 0xff);
|
||
sg->addr.addr[1] = ((thisphys >> 8) & 0xff);
|
||
sg->addr.addr[2] = ((thisphys >> 16) & 0xff);
|
||
sg->addr.addr[3] = ((thisphys >> 24) & 0xff);
|
||
|
||
if(scsi_debug & SHOWSCATGATH)
|
||
printf("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 *
|
||
\*********************************************/
|
||
{
|
||
/* 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 *
|
||
\********************************************/
|
||
if(scsi_debug & SHOWSCATGATH)
|
||
printf("(0x%x)",bytes_this_seg);
|
||
sg->len.len[0] = (bytes_this_seg & 0xff);
|
||
sg->len.len[1] = ((bytes_this_seg >> 8) & 0xff);
|
||
sg->len.len[2] = ((bytes_this_seg >> 16) & 0xff);
|
||
sg->len.len[3] = ((bytes_this_seg >> 24) & 0xff);
|
||
templen += bytes_this_seg;
|
||
sg++;
|
||
seg++;
|
||
}
|
||
} /*end of iov/kv decision */
|
||
mscp->datalen.len[0] = (templen & 0xff);
|
||
mscp->datalen.len[1] = ((templen >> 8) & 0xff);
|
||
mscp->datalen.len[2] = ((templen >> 16) & 0xff);
|
||
mscp->datalen.len[3] = ((templen >> 24) & 0xff);
|
||
mscp->sg_num = seg;
|
||
|
||
if(scsi_debug & SHOWSCATGATH)
|
||
printf("\n");
|
||
if (datalen)
|
||
{ /* there's still data, must have run out of segs! */
|
||
printf("uha_scsi_cmd%d: more than %d DMA segs\n",
|
||
unit,UHA_NSEG);
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
uha_free_mscp(unit,mscp,flags);
|
||
return(HAD_ERROR);
|
||
}
|
||
|
||
}
|
||
else
|
||
{ /* No data xfer, use non S/G values */
|
||
mscp->data.addr[0] = 0x00;
|
||
mscp->data.addr[1] = 0x00;
|
||
mscp->data.addr[2] = 0x00;
|
||
mscp->data.addr[3] = 0x00;
|
||
mscp->datalen.len[0] = 0x00;
|
||
mscp->datalen.len[1] = 0x00;
|
||
mscp->datalen.len[2] = 0x00;
|
||
mscp->datalen.len[3] = 0x00;
|
||
mscp->xdir = 0x03;
|
||
mscp->sgth = 0x00;
|
||
mscp->sg_num = 0x00;
|
||
}
|
||
|
||
/***********************************************\
|
||
* Put the scsi command in the mscp and start it *
|
||
\***********************************************/
|
||
bcopy(xs->cmd, mscp->cdb, xs->cmdlen);
|
||
|
||
/***********************************************\
|
||
* Usually return SUCCESSFULLY QUEUED *
|
||
\***********************************************/
|
||
if (!(flags & SCSI_NOMASK))
|
||
{
|
||
s = splbio();
|
||
uha_send_mbox(unit,mscp);
|
||
uha_add_timeout(mscp,xs->timeout);
|
||
splx(s);
|
||
if(scsi_debug & TRACEINTERRUPTS)
|
||
printf("cmd_sent ");
|
||
return(SUCCESSFULLY_QUEUED);
|
||
}
|
||
/***********************************************\
|
||
* If we can't use interrupts, poll on completion*
|
||
\***********************************************/
|
||
uha_send_mbox(unit,mscp);
|
||
if(scsi_debug & TRACEINTERRUPTS)
|
||
printf("cmd_wait ");
|
||
do
|
||
{
|
||
if(uha_poll(unit,xs->timeout))
|
||
{
|
||
if (!(xs->flags & SCSI_SILENT)) printf("cmd fail\n");
|
||
if(!(uha_abort(unit,mscp)))
|
||
{
|
||
printf("abort failed in wait\n");
|
||
uha_free_mscp(unit,mscp,flags);
|
||
}
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
splx(s);
|
||
return(HAD_ERROR);
|
||
}
|
||
} while (!(xs->flags & ITSDONE));/* something (?) else finished */
|
||
splx(s);
|
||
scsi_debug = 0;uha_debug = 0;
|
||
if(xs->error)
|
||
{
|
||
return(HAD_ERROR);
|
||
}
|
||
return(COMPLETE);
|
||
}
|
||
|
||
/*
|
||
* +----------+ +----------+ +----------+
|
||
* uha_soonest--->| later |--->| later|--->| later|--->0
|
||
* | [Delta] | | [Delta] | | [Delta] |
|
||
* 0<---|sooner |<---|sooner |<---|sooner |<---uha_latest
|
||
* +----------+ +----------+ +----------+
|
||
*
|
||
* uha_furtherest = sum(Delta[1..n])
|
||
*/
|
||
uha_add_timeout(mscp,time)
|
||
struct mscp *mscp;
|
||
int time;
|
||
{
|
||
int timeprev;
|
||
struct mscp *prev;
|
||
int s = splbio();
|
||
|
||
if(prev = uha_latest) /* yes, an assign */
|
||
{
|
||
timeprev = uha_furtherest;
|
||
}
|
||
else
|
||
{
|
||
timeprev = 0;
|
||
}
|
||
while(prev && (timeprev > time))
|
||
{
|
||
timeprev -= prev->delta;
|
||
prev = prev->sooner;
|
||
}
|
||
if(prev)
|
||
{
|
||
mscp->delta = time - timeprev;
|
||
if( mscp->later = prev->later) /* yes an assign */
|
||
{
|
||
mscp->later->sooner = mscp;
|
||
mscp->later->delta -= mscp->delta;
|
||
}
|
||
else
|
||
{
|
||
uha_furtherest = time;
|
||
uha_latest = mscp;
|
||
}
|
||
mscp->sooner = prev;
|
||
prev->later = mscp;
|
||
}
|
||
else
|
||
{
|
||
if( mscp->later = uha_soonest) /* yes, an assign*/
|
||
{
|
||
mscp->later->sooner = mscp;
|
||
mscp->later->delta -= time;
|
||
}
|
||
else
|
||
{
|
||
uha_furtherest = time;
|
||
uha_latest = mscp;
|
||
}
|
||
mscp->delta = time;
|
||
mscp->sooner = (struct mscp *)0;
|
||
uha_soonest = mscp;
|
||
}
|
||
splx(s);
|
||
}
|
||
|
||
uha_remove_timeout(mscp)
|
||
struct mscp *mscp;
|
||
{
|
||
int s = splbio();
|
||
|
||
if(mscp->sooner)
|
||
{
|
||
mscp->sooner->later = mscp->later;
|
||
}
|
||
else
|
||
{
|
||
uha_soonest = mscp->later;
|
||
}
|
||
if(mscp->later)
|
||
{
|
||
mscp->later->sooner = mscp->sooner;
|
||
mscp->later->delta += mscp->delta;
|
||
}
|
||
else
|
||
{
|
||
uha_latest = mscp->sooner;
|
||
uha_furtherest -= mscp->delta;
|
||
}
|
||
mscp->sooner = mscp->later = (struct mscp *)0;
|
||
splx(s);
|
||
}
|
||
|
||
|
||
extern int hz;
|
||
#define ONETICK 500 /* milliseconds */
|
||
#define SLEEPTIME ((hz * 1000) / ONETICK)
|
||
uha_timeout(arg)
|
||
int arg;
|
||
{
|
||
struct mscp *mscp;
|
||
int unit;
|
||
int s = splbio();
|
||
unsigned int stat;
|
||
int port = uha_data[unit].baseport;
|
||
|
||
while( mscp = uha_soonest )
|
||
{
|
||
if(mscp->delta <= ONETICK)
|
||
/***********************************************\
|
||
* It has timed out, we need to do some work *
|
||
\***********************************************/
|
||
{
|
||
unit = mscp->xs->adapter;
|
||
printf("uha%d:%d device timed out\n",unit
|
||
,mscp->xs->targ);
|
||
if(uha_debug & UHA_SHOWMSCPS)
|
||
uha_print_active_mscp();
|
||
|
||
/***************************************\
|
||
* Unlink it from the queue *
|
||
\***************************************/
|
||
uha_remove_timeout(mscp);
|
||
|
||
if((uha_abort(unit,mscp) !=1) || (mscp->flags = MSCP_ABORTED))
|
||
{
|
||
printf("AGAIN");
|
||
mscp->xs->retries = 0; /* I MEAN IT ! */
|
||
uha_done(unit,mscp,FAIL);
|
||
}
|
||
else /* abort the operation that has timed out */
|
||
{
|
||
printf("\n");
|
||
uha_add_timeout(mscp,2000 + ONETICK);
|
||
mscp->flags = MSCP_ABORTED;
|
||
}
|
||
}
|
||
else
|
||
/***********************************************\
|
||
* It has not timed out, adjust and leave *
|
||
\***********************************************/
|
||
{
|
||
mscp->delta -= ONETICK;
|
||
uha_furtherest -= ONETICK;
|
||
break;
|
||
}
|
||
}
|
||
splx(s);
|
||
timeout(uha_timeout,arg,SLEEPTIME);
|
||
}
|
||
|
||
uha_show_scsi_cmd(struct scsi_xfer *xs)
|
||
{
|
||
u_char *b = (u_char *)xs->cmd;
|
||
int i = 0;
|
||
if(!(xs->flags & SCSI_RESET))
|
||
{
|
||
printf("uha%d:%d:%d-"
|
||
,xs->adapter
|
||
,xs->targ
|
||
,xs->lu);
|
||
while(i < xs->cmdlen )
|
||
{
|
||
if(i) printf(",");
|
||
printf("%x",b[i++]);
|
||
}
|
||
printf("-\n");
|
||
}
|
||
else
|
||
{
|
||
printf("uha%d:%d:%d-RESET-\n"
|
||
,xs->adapter
|
||
,xs->targ
|
||
,xs->lu
|
||
);
|
||
}
|
||
}
|
||
uha_print_mscp(mscp)
|
||
struct mscp *mscp;
|
||
{
|
||
printf("mscp:%x op:%x cmdlen:%d senlen:%d\n"
|
||
,mscp
|
||
,mscp->opcode
|
||
,mscp->cdblen
|
||
,mscp->senselen);
|
||
printf(" sg:%d sgnum:%x datlen:%d hstat:%x tstat:%x delta:%d flags:%x\n"
|
||
,mscp->sgth
|
||
,mscp->sg_num
|
||
,mscp->datalen
|
||
,mscp->ha_status
|
||
,mscp->targ_status
|
||
,mscp->delta
|
||
,mscp->flags);
|
||
uha_show_scsi_cmd(mscp->xs);
|
||
}
|
||
|
||
uha_print_active_mscp()
|
||
{
|
||
struct mscp *mscp;
|
||
mscp = uha_soonest;
|
||
|
||
while(mscp)
|
||
{
|
||
uha_print_mscp(mscp);
|
||
mscp = mscp->later;
|
||
}
|
||
printf("Furtherest = %d\n",uha_furtherest);
|
||
}
|