07e1c7f69d
``changes'' are actually not changes at all, but CVS sometimes has trouble telling the difference. This also includes support for second-directory compiles. This is not quite complete yet, as `config' doesn't yet do the right thing. You can still make it work trivially, however, by doing the following: rm /sys/compile mkdir /usr/obj/sys/compile ln -s M-. /sys/compile cd /sys/i386/conf config MYKERNEL cd ../../compile/MYKERNEL ln -s /sys @ rm machine ln -s @/i386/include machine make depend make
1156 lines
28 KiB
C
1156 lines
28 KiB
C
/*
|
||
* Ported for use with the UltraStor 14f by Gary Close (gclose@wvnvms.wvnet.edu)
|
||
* Slight fixes to timeouts to run with the 34F
|
||
* Thanks to Julian Elischer for advice and help with this port.
|
||
*
|
||
* Written by Julian Elischer (julian@tfs.com)
|
||
* for TRW Financial Systems for use under the MACH(2.5) operating system.
|
||
*
|
||
* TRW Financial Systems, in accordance with their agreement with Carnegie
|
||
* Mellon University, makes this software available to CMU to distribute
|
||
* or use in any manner that they see fit as long as this message is kept with
|
||
* 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
|
||
* functioning of this software in any circumstances.
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||
*
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||
* commenced: Sun Sep 27 18:14:01 PDT 1992
|
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* slight mod to make work with 34F as well: Wed Jun 2 18:05:48 WST 1993
|
||
*
|
||
* $Id: ultra14f.c,v 1.19 1994/05/27 04:02:08 rgrimes Exp $
|
||
*/
|
||
|
||
#include <sys/types.h>
|
||
|
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#ifdef KERNEL /* don't laugh.. this compiles to a program too.. look */
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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/malloc.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <i386/include/pio.h>
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#include <i386/isa/isa_device.h>
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#endif /*KERNEL */
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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/* */
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#ifdef KERNEL
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#include "ddb.h"
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#else /*KERNEL */
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#define NUHA 1
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#endif /*KERNEL */
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#ifndef NetBSD
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typedef timeout_func_t timeout_t;
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#endif
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|
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typedef struct {
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unsigned char addr[4];
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} physaddr;
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typedef struct {
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unsigned char len[4];
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} physlen;
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#define KVTOPHYS(x) vtophys(x)
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#define UHA_MSCP_MAX 32 /* store up to 32MSCPs at any one time
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* MAX = ?
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*/
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#define MSCP_HASH_SIZE 32 /* when we have a physical addr. for
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* a mscp and need to find the mscp in
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* space, look it up in the hash table
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*/
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#define MSCP_HASH_SHIFT 9 /* only hash on multiples of 512 */
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#define MSCP_HASH(x) ((((long int)(x))>>MSCP_HASH_SHIFT) % MSCP_HASH_SIZE)
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extern int hz;
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#define UHA_NSEG 33 /* number of dma segments supported */
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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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struct uha_dma_seg {
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physaddr addr;
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physlen len;
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};
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struct mscp {
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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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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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struct mscp *nexthash;
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||
long int hashkey;
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};
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struct uha_data {
|
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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 *mscphash[MSCP_HASH_SIZE];
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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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int nummscps;
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struct scsi_link sc_link;
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} *uhadata[NUHA];
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int uhaprobe();
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int uha_attach();
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int uhaintr();
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int32 uha_scsi_cmd();
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void uha_timeout(caddr_t);
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void uha_free_mscp();
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int uha_abort();
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void uhaminphys();
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void uha_done();
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u_int32 uha_adapter_info();
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struct mscp *uha_mscp_phys_kv();
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struct mscp *cheat;
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unsigned long int scratch;
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static uha_unit = 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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||
#ifdef KERNEL
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struct isa_driver uhadriver =
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{
|
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uhaprobe,
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uha_attach,
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"uha"
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};
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struct scsi_adapter uha_switch =
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{
|
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uha_scsi_cmd,
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uhaminphys,
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0,
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0,
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uha_adapter_info,
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"uha",
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0, 0
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};
|
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|
||
/* the below structure is so we have a default dev struct for out link struct */
|
||
struct scsi_device uha_dev =
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{
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NULL, /* Use default error handler */
|
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NULL, /* have a queue, served by this */
|
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NULL, /* have no async handler */
|
||
NULL, /* Use default 'done' routine */
|
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"uha",
|
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0,
|
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0, 0
|
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};
|
||
|
||
#endif /*KERNEL */
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||
|
||
#ifndef KERNEL
|
||
main()
|
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{
|
||
printf("uha_data is %d bytes\n", sizeof(struct uha_data));
|
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printf("mscp is %d bytes\n", sizeof(struct mscp));
|
||
}
|
||
|
||
#else /*KERNEL*/
|
||
/*
|
||
* Function to send a command out through a mailbox
|
||
*/
|
||
void
|
||
uha_send_mbox(int unit, struct mscp *mscp)
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
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int port = uha->baseport;
|
||
int spincount = 100000; /* 1s should be enough */
|
||
int s = splbio();
|
||
|
||
while (--spincount) {
|
||
if ((inb(port + UHA_LINT) & UHA_LDIP) == 0)
|
||
break;
|
||
DELAY(100);
|
||
}
|
||
if (spincount == 0) {
|
||
printf("uha%d: uha_send_mbox, board not responding\n", unit);
|
||
Debugger("ultra14f");
|
||
}
|
||
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
|
||
*/
|
||
int
|
||
uha_abort(int unit, struct mscp *mscp)
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
int port = uha->baseport;
|
||
int spincount = 100; /* 1 mSec */
|
||
int abortcount = 200000; /*2 secs */
|
||
int s = splbio();
|
||
|
||
while (--spincount) {
|
||
if ((inb(port + UHA_LINT) & UHA_LDIP) == 0)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (spincount == 0) {
|
||
printf("uha%d: uha_abort, board not responding\n", unit);
|
||
Debugger("ultra14f");
|
||
}
|
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outl(port + UHA_OGM0, KVTOPHYS(mscp));
|
||
outb(port + UHA_LINT, UHA_ABORT);
|
||
|
||
while (--abortcount) {
|
||
if (inb(port + UHA_SINT) & UHA_ABORT_FAIL)
|
||
break;
|
||
DELAY(10);
|
||
}
|
||
if (abortcount == 0) {
|
||
printf("uha%d: uha_abort, board not responding\n", unit);
|
||
Debugger("ultra14f");
|
||
}
|
||
if ((inb(port + UHA_SINT) & 0x10) != 0) {
|
||
outb(port + UHA_SINT, UHA_ABORT_ACK);
|
||
splx(s);
|
||
return (1);
|
||
} else {
|
||
outb(port + UHA_SINT, UHA_ABORT_ACK);
|
||
splx(s);
|
||
return (0);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Function to poll for command completion when in poll mode.
|
||
*
|
||
* wait = timeout in msec
|
||
*/
|
||
int
|
||
uha_poll(int unit, int wait)
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
int port = uha->baseport;
|
||
int stport = port + UHA_SINT;
|
||
|
||
retry:
|
||
while (--wait) {
|
||
if (inb(stport) & UHA_SINTP)
|
||
break;
|
||
DELAY(1000); /* 1 mSec per loop */
|
||
}
|
||
if (wait == 0) {
|
||
printf("uha%d: uha_poll, board not responding\n", unit);
|
||
return (EIO);
|
||
}
|
||
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_device structure
|
||
* from autoconf.c
|
||
*/
|
||
int
|
||
uhaprobe(dev)
|
||
struct isa_device *dev;
|
||
{
|
||
int unit = uha_unit;
|
||
struct uha_data *uha;
|
||
|
||
dev->id_unit = unit;
|
||
|
||
/*
|
||
* find unit and check we have that many defined
|
||
*/
|
||
if (unit >= NUHA) {
|
||
printf("uha: unit number (%d) too high\n", unit);
|
||
return (0);
|
||
}
|
||
dev->id_unit = unit;
|
||
|
||
/*
|
||
* Allocate a storage area for us
|
||
*/
|
||
if (uhadata[unit]) {
|
||
printf("uha%d: memory already allocated\n", unit);
|
||
return 0;
|
||
}
|
||
uha = malloc(sizeof(struct uha_data), M_TEMP, M_NOWAIT);
|
||
if (!uha) {
|
||
printf("uha%d: cannot malloc!\n", unit);
|
||
return 0;
|
||
}
|
||
bzero(uha, sizeof(struct uha_data));
|
||
uhadata[unit] = uha;
|
||
uha->baseport = dev->id_iobase;
|
||
/*
|
||
* Try initialise a unit at this location
|
||
* sets up dma and bus speed, loads uha->vect
|
||
*/
|
||
if (uha_init(unit) != 0) {
|
||
uhadata[unit] = NULL;
|
||
free(uha, M_TEMP);
|
||
return (0);
|
||
}
|
||
/* if it's there put in its interrupt and DRQ vectors */
|
||
dev->id_irq = (1 << uha->vect);
|
||
dev->id_drq = uha->dma;
|
||
|
||
uha_unit++;
|
||
return (16);
|
||
}
|
||
|
||
/*
|
||
* Attach all the sub-devices we can find
|
||
*/
|
||
int
|
||
uha_attach(dev)
|
||
struct isa_device *dev;
|
||
{
|
||
int unit = dev->id_unit;
|
||
struct uha_data *uha = uhadata[unit];
|
||
|
||
/*
|
||
* fill in the prototype scsi_link.
|
||
*/
|
||
uha->sc_link.adapter_unit = unit;
|
||
uha->sc_link.adapter_targ = uha->our_id;
|
||
uha->sc_link.adapter = &uha_switch;
|
||
uha->sc_link.device = &uha_dev;
|
||
uha->sc_link.flags = SDEV_BOUNCE;
|
||
|
||
/*
|
||
* ask the adapter what subunits are present
|
||
*/
|
||
scsi_attachdevs(&(uha->sc_link));
|
||
|
||
return 1;
|
||
}
|
||
|
||
/*
|
||
* Return some information to the caller about
|
||
* the adapter and it's capabilities
|
||
*/
|
||
u_int32
|
||
uha_adapter_info(unit)
|
||
int unit;
|
||
{
|
||
return (2); /* 2 outstanding requests at a time per device */
|
||
}
|
||
|
||
/*
|
||
* Catch an interrupt from the adaptor
|
||
*/
|
||
int
|
||
uhaintr(unit)
|
||
int unit;
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
struct mscp *mscp;
|
||
u_char uhastat;
|
||
unsigned long int mboxval;
|
||
|
||
int port = uha->baseport;
|
||
|
||
#ifdef UHADEBUG
|
||
printf("uhaintr ");
|
||
#endif /*UHADEBUG */
|
||
|
||
while (inb(port + UHA_SINT) & UHA_SINTP) {
|
||
/*
|
||
* First get all the information and then
|
||
* acknowledge the interrupt
|
||
*/
|
||
uhastat = inb(port + UHA_SINT);
|
||
mboxval = inl(port + UHA_ICM0);
|
||
outb(port + UHA_SINT, UHA_ICM_ACK);
|
||
|
||
#ifdef UHADEBUG
|
||
printf("status = 0x%x ", uhastat);
|
||
#endif /*UHADEBUG*/
|
||
/*
|
||
* Process the completed operation
|
||
*/
|
||
|
||
mscp = uha_mscp_phys_kv(uha, mboxval);
|
||
if (!mscp) {
|
||
printf("uha: BAD MSCP RETURNED\n");
|
||
return (0); /* whatever it was, it'll timeout */
|
||
}
|
||
untimeout((timeout_t)uha_timeout, (caddr_t)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.
|
||
*/
|
||
void
|
||
uha_done(unit, mscp)
|
||
int unit;
|
||
struct mscp *mscp;
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
struct scsi_sense_data *s1, *s2;
|
||
struct scsi_xfer *xs = mscp->xs;
|
||
|
||
SC_DEBUG(xs->sc_link, SDEV_DB2, ("uha_done\n"));
|
||
/*
|
||
* 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 */
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
||
("timeout reported back\n"));
|
||
xs->error = XS_TIMEOUT;
|
||
break;
|
||
case UHA_SBUS_OVER_UNDER:
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
||
("scsi bus xfer over/underrun\n"));
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
break;
|
||
case UHA_BAD_SG_LIST:
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
||
("bad sg list reported back\n"));
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
break;
|
||
default: /* Other scsi protocol messes */
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
||
("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!!
|
||
*/
|
||
|
||
{
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
||
("unexpected targ_status: %x\n",
|
||
mscp->targ_status));
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
}
|
||
}
|
||
}
|
||
done:
|
||
xs->flags |= ITSDONE;
|
||
uha_free_mscp(unit, mscp, xs->flags);
|
||
scsi_done(xs);
|
||
}
|
||
|
||
/*
|
||
* A mscp (and hence a mbx-out) is put onto the free list.
|
||
*/
|
||
void
|
||
uha_free_mscp(unit, mscp, flags)
|
||
int unit;
|
||
struct mscp *mscp;
|
||
int flags;
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
unsigned int opri = 0;
|
||
|
||
if (!(flags & SCSI_NOMASK))
|
||
opri = splbio();
|
||
|
||
mscp->next = uha->free_mscp;
|
||
uha->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((caddr_t)&uha->free_mscp);
|
||
}
|
||
if (!(flags & SCSI_NOMASK))
|
||
splx(opri);
|
||
}
|
||
|
||
/*
|
||
* Get a free mscp
|
||
*
|
||
* If there are none, see if we can allocate a new one. If so, put it in the
|
||
* hash table too otherwise either return an error or sleep.
|
||
*/
|
||
struct mscp *
|
||
uha_get_mscp(unit, flags)
|
||
int unit, flags;
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
unsigned opri = 0;
|
||
struct mscp *mscpp;
|
||
int hashnum;
|
||
|
||
if (!(flags & SCSI_NOMASK))
|
||
opri = splbio();
|
||
/*
|
||
* If we can and have to, sleep waiting for one to come free
|
||
* but only if we can't allocate a new one
|
||
*/
|
||
while (!(mscpp = uha->free_mscp)) {
|
||
if (uha->nummscps < UHA_MSCP_MAX) {
|
||
if (mscpp = (struct mscp *)malloc(sizeof(struct mscp),
|
||
M_TEMP,
|
||
M_NOWAIT)) {
|
||
bzero(mscpp, sizeof(struct mscp));
|
||
uha->nummscps++;
|
||
mscpp->flags = MSCP_ACTIVE;
|
||
/*
|
||
* put in the phystokv hash table
|
||
* Never gets taken out.
|
||
*/
|
||
mscpp->hashkey = KVTOPHYS(mscpp);
|
||
hashnum = MSCP_HASH(mscpp->hashkey);
|
||
mscpp->nexthash = uha->mscphash[hashnum];
|
||
uha->mscphash[hashnum] = mscpp;
|
||
} else {
|
||
printf("uha%d: Can't malloc MSCP\n", unit);
|
||
}
|
||
goto gottit;
|
||
} else {
|
||
if (!(flags & SCSI_NOSLEEP)) {
|
||
tsleep((caddr_t)&uha->free_mscp, PRIBIO,
|
||
"uhamscp", 0);
|
||
}
|
||
}
|
||
}
|
||
if (mscpp) {
|
||
/* Get MSCP from from free list */
|
||
uha->free_mscp = mscpp->next;
|
||
mscpp->flags = MSCP_ACTIVE;
|
||
}
|
||
gottit:
|
||
if (!(flags & SCSI_NOMASK))
|
||
splx(opri);
|
||
|
||
return (mscpp);
|
||
}
|
||
|
||
/*
|
||
* given a physical address, find the mscp that it corresponds to.
|
||
*/
|
||
struct mscp *
|
||
uha_mscp_phys_kv(uha, mscp_phys)
|
||
struct uha_data *uha;
|
||
long int mscp_phys;
|
||
{
|
||
int hashnum = MSCP_HASH(mscp_phys);
|
||
struct mscp *mscpp = uha->mscphash[hashnum];
|
||
|
||
while (mscpp) {
|
||
if (mscpp->hashkey == mscp_phys)
|
||
break;
|
||
mscpp = mscpp->nexthash;
|
||
}
|
||
return mscpp;
|
||
}
|
||
|
||
/*
|
||
* Start the board, ready for normal operation
|
||
*/
|
||
int
|
||
uha_init(unit)
|
||
int unit;
|
||
{
|
||
struct uha_data *uha = uhadata[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->baseport;
|
||
int i;
|
||
int resetcount = 4000; /* 4 secs? */
|
||
|
||
model = inb(port + UHA_ID0);
|
||
submodel = inb(port + UHA_ID1);
|
||
if ((model != 0x56) & (submodel != 0x40)) {
|
||
printf("uha%d: uha_init, board not responding\n", unit);
|
||
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->dma = 5;
|
||
printf("dma=5 ");
|
||
break;
|
||
case UHA_DMA_CH6:
|
||
uha->dma = 6;
|
||
printf("dma=6 ");
|
||
break;
|
||
case UHA_DMA_CH7:
|
||
uha->dma = 7;
|
||
printf("dma=7 ");
|
||
break;
|
||
default:
|
||
printf("illegal dma jumper setting\n");
|
||
return (EIO);
|
||
}
|
||
switch (irq_ch) {
|
||
case UHA_IRQ10:
|
||
uha->vect = 10;
|
||
printf("int=10 ");
|
||
break;
|
||
case UHA_IRQ11:
|
||
uha->vect = 11;
|
||
printf("int=11 ");
|
||
break;
|
||
case UHA_IRQ14:
|
||
uha->vect = 14;
|
||
printf("int=14 ");
|
||
break;
|
||
case UHA_IRQ15:
|
||
uha->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->our_id = uha_id;
|
||
|
||
/*
|
||
* Note that we are going and return (to probe)
|
||
*/
|
||
outb(port + UHA_LINT, UHA_ASRST);
|
||
while (--resetcount) {
|
||
if (inb(port + UHA_LINT))
|
||
break;
|
||
DELAY(1000); /* 1 mSec per loop */
|
||
}
|
||
if (resetcount == 0) {
|
||
printf("uha%d: board timed out during reset\n", unit);
|
||
return (ENXIO);
|
||
}
|
||
outb(port + UHA_SMASK, 0x81); /* make sure interrupts are enabled */
|
||
uha->flags |= UHA_INIT;
|
||
return (0);
|
||
}
|
||
|
||
#ifndef min
|
||
#define min(x,y) (x < y ? x : y)
|
||
#endif /* min */
|
||
|
||
void
|
||
uhaminphys(bp)
|
||
struct buf *bp;
|
||
{
|
||
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.
|
||
*/
|
||
int32
|
||
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->sc_link->adapter_unit;
|
||
int bytes_this_seg, bytes_this_page, datalen, flags;
|
||
struct iovec *iovp;
|
||
struct uha_data *uha = uhadata[unit];
|
||
int s;
|
||
unsigned int stat;
|
||
int port = uha->baseport;
|
||
unsigned long int templen;
|
||
|
||
SC_DEBUG(xs->sc_link, SDEV_DB2, ("uha_scsi_cmd\n"));
|
||
/*
|
||
* 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("uha%d: Already done?", unit);
|
||
xs->flags &= ~ITSDONE;
|
||
}
|
||
if (!(flags & INUSE)) {
|
||
printf("uha%d: Not in use?", unit);
|
||
xs->flags |= INUSE;
|
||
}
|
||
if (!(mscp = uha_get_mscp(unit, flags))) {
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
return (TRY_AGAIN_LATER);
|
||
}
|
||
cheat = mscp;
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("start mscp(%x)\n", mscp));
|
||
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;
|
||
}
|
||
#ifdef GOTTABEJOKING
|
||
if (xs->sc_link->lun != 0) {
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
uha_free_mscp(unit, mscp, flags);
|
||
return (HAD_ERROR);
|
||
}
|
||
#endif
|
||
mscp->dcn = 0x00;
|
||
mscp->chan = 0x00;
|
||
mscp->target = xs->sc_link->target;
|
||
mscp->lun = xs->sc_link->lun;
|
||
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;
|
||
|
||
#ifdef TFS
|
||
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;
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("(0x%x@0x%x)",
|
||
iovp->iov_len,
|
||
iovp->iov_base));
|
||
sg++;
|
||
iovp++;
|
||
seg++;
|
||
datalen--;
|
||
}
|
||
} else
|
||
#endif /*TFS */
|
||
{
|
||
/*
|
||
* Set up the scatter gather block
|
||
*/
|
||
|
||
SC_DEBUG(xs->sc_link, SDEV_DB4,
|
||
("%d @0x%x:- ", xs->datalen, xs->data));
|
||
datalen = xs->datalen;
|
||
thiskv = (int) xs->data;
|
||
thisphys = KVTOPHYS(thiskv);
|
||
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);
|
||
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("0x%x", thisphys));
|
||
|
||
/* do it at least once */
|
||
nextphys = thisphys;
|
||
while ((datalen) && (thisphys == nextphys))
|
||
/*
|
||
* This page is contiguous (physically) with
|
||
* the the last, just extend the length
|
||
*/
|
||
{
|
||
/* how far to the end of the page */
|
||
nextphys = (thisphys & (~(PAGESIZ - 1)))
|
||
+ PAGESIZ;
|
||
bytes_this_page = nextphys - thisphys;
|
||
/**** or the data ****/
|
||
bytes_this_page = min(bytes_this_page
|
||
,datalen);
|
||
bytes_this_seg += bytes_this_page;
|
||
datalen -= bytes_this_page;
|
||
|
||
/* get more ready for the next page */
|
||
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
||
+ PAGESIZ;
|
||
if (datalen)
|
||
thisphys = KVTOPHYS(thiskv);
|
||
}
|
||
/*
|
||
* next page isn't contiguous, finish the seg
|
||
*/
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
||
("(0x%x)", bytes_this_seg));
|
||
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;
|
||
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
|
||
if (datalen) { /* there's still data, must have run out of segs! */
|
||
printf("uha%d: uha_scsi_cmd, 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);
|
||
timeout((timeout_t)uha_timeout, (caddr_t)mscp, (xs->timeout * hz) / 1000);
|
||
splx(s);
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n"));
|
||
return (SUCCESSFULLY_QUEUED);
|
||
}
|
||
|
||
/*
|
||
* If we can't use interrupts, poll on completion
|
||
*/
|
||
uha_send_mbox(unit, mscp);
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_wait\n"));
|
||
do {
|
||
if (uha_poll(unit, xs->timeout)) {
|
||
if (!(xs->flags & SCSI_SILENT))
|
||
printf("uha%d: cmd fail\n", unit);
|
||
if (!(uha_abort(unit, mscp))) {
|
||
printf("uha%d: abort failed in wait\n", unit);
|
||
uha_free_mscp(unit, mscp, flags);
|
||
}
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
return (HAD_ERROR);
|
||
}
|
||
}
|
||
while (!(xs->flags & ITSDONE)); /* something (?) else finished */
|
||
if (xs->error) {
|
||
return (HAD_ERROR);
|
||
}
|
||
return (COMPLETE);
|
||
}
|
||
|
||
void
|
||
uha_timeout(caddr_t arg1)
|
||
{
|
||
struct mscp *mscp = (struct mscp *)arg1;
|
||
int unit;
|
||
struct uha_data *uha;
|
||
int s = splbio();
|
||
/*int port = uha->baseport; */
|
||
|
||
unit = mscp->xs->sc_link->adapter_unit;
|
||
uha = uhadata[unit];
|
||
printf("uha%d:%d:%d (%s%d) timed out ", unit
|
||
,mscp->xs->sc_link->target
|
||
,mscp->xs->sc_link->lun
|
||
,mscp->xs->sc_link->device->name
|
||
,mscp->xs->sc_link->dev_unit);
|
||
|
||
#ifdef UHADEBUG
|
||
uha_print_active_mscp(unit);
|
||
#endif /*UHADEBUG */
|
||
|
||
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");
|
||
timeout((timeout_t)uha_timeout, (caddr_t)mscp, 2 * hz);
|
||
mscp->flags = MSCP_ABORTED;
|
||
}
|
||
splx(s);
|
||
}
|
||
|
||
#ifdef UHADEBUG
|
||
void
|
||
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 flags:%x\n"
|
||
,mscp->sgth
|
||
,mscp->sg_num
|
||
,mscp->datalen
|
||
,mscp->ha_status
|
||
,mscp->targ_status
|
||
,mscp->flags);
|
||
show_scsi_cmd(mscp->xs);
|
||
}
|
||
|
||
void
|
||
uha_print_active_mscp(int unit)
|
||
{
|
||
struct uha_data *uha = uhadata[unit];
|
||
struct mscp *mscp;
|
||
int i = 0;
|
||
|
||
while (i < MSCP_HASH_SIZE) {
|
||
mscp = uha->mscphash[i];
|
||
while (mscp) {
|
||
if (mscp->flags != MSCP_FREE) {
|
||
uha_print_mscp(mscp);
|
||
}
|
||
mscp = mscp->nexthash;
|
||
}
|
||
i++;
|
||
}
|
||
}
|
||
#endif /*UHADEBUG */
|
||
#endif /*KERNEL */
|