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Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some
[unix-history] / sys / i386 / isa / aha1742.c
/*
* 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.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* commenced: Sun Sep 27 18:14:01 PDT 1992
*
* $Id: aha1742.c,v 1.9 1993/08/28 03:07:40 rgrimes Exp $
*/
#include <sys/types.h>
#include <ahb.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#ifdef MACH /* EITHER CMU OR OSF */
#include <i386/ipl.h>
#include <i386at/scsi.h>
#include <i386at/scsiconf.h>
#ifdef OSF /* OSF ONLY */
#include <sys/table.h>
#include <i386/handler.h>
#include <i386/dispatcher.h>
#include <i386/AT386/atbus.h>
#else OSF /* CMU ONLY */
#include <i386at/atbus.h>
#include <i386/pio.h>
#endif OSF
#endif MACH /* end of MACH specific */
#ifdef __386BSD__ /* 386BSD specific */
#define isa_dev isa_device
#define dev_unit id_unit
#define dev_addr id_iobase
#include <i386/include/pio.h>
#include <i386/isa/isa_device.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#endif __386BSD__
/*\f*/
#ifdef __386BSD__
#include "ddb.h"
#if NDDB > 0
int Debugger();
#else NDDB
#define Debugger() panic("should call debugger here (adaptec.c)")
#endif NDDB
#endif __386BSD__
#ifdef MACH
int Debugger();
#endif MACH
typedef unsigned long int physaddr;
extern int hz;
#ifdef MACH
extern physaddr kvtophys();
#define PHYSTOKV(x) phystokv(x)
#define KVTOPHYS(x) kvtophys(x)
#endif MACH
#ifdef __386BSD__
#define KVTOPHYS(x) vtophys(x)
#endif __386BSD__
extern int delaycount; /* from clock setup code */
#define NUM_CONCURRENT 16 /* number of concurrent ops per board */
#define AHB_NSEG 33 /* number of dma segments supported */
#define FUDGE(X) (X>>1) /* our loops are slower than spinwait() */
/*\f*/
/***********************************************************************\
* AHA1740 standard EISA Host ID regs (Offset from slot base) *
\***********************************************************************/
#define HID0 0xC80 /* 0,1: msb of ID2, 3-7: ID1 */
#define HID1 0xC81 /* 0-4: ID3, 4-7: LSB ID2 */
#define HID2 0xC82 /* product, 0=174[20] 1 = 1744 */
#define HID3 0xC83 /* firmware revision */
#define CHAR1(B1,B2) (((B1>>2) & 0x1F) | '@')
#define CHAR2(B1,B2) (((B1<<3) & 0x18) | ((B2>>5) & 0x7)|'@')
#define CHAR3(B1,B2) ((B2 & 0x1F) | '@')
/* AHA1740 EISA board control registers (Offset from slot base) */
#define EBCTRL 0xC84
#define CDEN 0x01
/***********************************************************************\
* AHA1740 EISA board mode registers (Offset from slot base) *
\***********************************************************************/
#define PORTADDR 0xCC0
#define PORTADDR_ENHANCED 0x80
#define BIOSADDR 0xCC1
#define INTDEF 0xCC2
#define SCSIDEF 0xCC3
#define BUSDEF 0xCC4
#define RESV0 0xCC5
#define RESV1 0xCC6
#define RESV2 0xCC7
/**** bit definitions for INTDEF ****/
#define INT9 0x00
#define INT10 0x01
#define INT11 0x02
#define INT12 0x03
#define INT14 0x05
#define INT15 0x06
#define INTHIGH 0x08 /* int high=ACTIVE (else edge) */
#define INTEN 0x10
/**** bit definitions for SCSIDEF ****/
#define HSCSIID 0x0F /* our SCSI ID */
#define RSTPWR 0x10 /* reset scsi bus on power up or reset */
/**** bit definitions for BUSDEF ****/
#define B0uS 0x00 /* give up bus immediatly */
#define B4uS 0x01 /* delay 4uSec. */
#define B8uS 0x02
/***********************************************************************\
* AHA1740 ENHANCED mode mailbox control regs (Offset from slot base) *
\***********************************************************************/
#define MBOXOUT0 0xCD0
#define MBOXOUT1 0xCD1
#define MBOXOUT2 0xCD2
#define MBOXOUT3 0xCD3
#define ATTN 0xCD4
#define G2CNTRL 0xCD5
#define G2INTST 0xCD6
#define G2STAT 0xCD7
#define MBOXIN0 0xCD8
#define MBOXIN1 0xCD9
#define MBOXIN2 0xCDA
#define MBOXIN3 0xCDB
#define G2STAT2 0xCDC
/*******************************************************\
* Bit definitions for the 5 control/status registers *
\*******************************************************/
#define ATTN_TARGET 0x0F
#define ATTN_OPCODE 0xF0
#define OP_IMMED 0x10
#define AHB_TARG_RESET 0x80
#define OP_START_ECB 0x40
#define OP_ABORT_ECB 0x50
#define G2CNTRL_SET_HOST_READY 0x20
#define G2CNTRL_CLEAR_EISA_INT 0x40
#define G2CNTRL_HARD_RESET 0x80
#define G2INTST_TARGET 0x0F
#define G2INTST_INT_STAT 0xF0
#define AHB_ECB_OK 0x10
#define AHB_ECB_RECOVERED 0x50
#define AHB_HW_ERR 0x70
#define AHB_IMMED_OK 0xA0
#define AHB_ECB_ERR 0xC0
#define AHB_ASN 0xD0 /* for target mode */
#define AHB_IMMED_ERR 0xE0
#define G2STAT_BUSY 0x01
#define G2STAT_INT_PEND 0x02
#define G2STAT_MBOX_EMPTY 0x04
#define G2STAT2_HOST_READY 0x01
/*\f*/
struct ahb_dma_seg
{
physaddr addr;
long len;
};
struct ahb_ecb_status
{
u_short status;
# define ST_DON 0x0001
# define ST_DU 0x0002
# define ST_QF 0x0008
# define ST_SC 0x0010
# define ST_DO 0x0020
# define ST_CH 0x0040
# define ST_INT 0x0080
# define ST_ASA 0x0100
# define ST_SNS 0x0200
# define ST_INI 0x0800
# define ST_ME 0x1000
# define ST_ECA 0x4000
u_char ha_status;
# define HS_OK 0x00
# define HS_CMD_ABORTED_HOST 0x04
# define HS_CMD_ABORTED_ADAPTER 0x05
# define HS_TIMED_OUT 0x11
# define HS_HARDWARE_ERR 0x20
# define HS_SCSI_RESET_ADAPTER 0x22
# define HS_SCSI_RESET_INCOMING 0x23
u_char targ_status;
# define TS_OK 0x00
# define TS_CHECK_CONDITION 0x02
# define TS_BUSY 0x08
u_long resid_count;
u_long resid_addr;
u_short addit_status;
u_char sense_len;
u_char unused[9];
u_char cdb[6];
};
/*\f*/
struct ecb
{
u_char opcode;
# define ECB_SCSI_OP 0x01
u_char :4;
u_char options:3;
u_char :1;
short opt1;
# define ECB_CNE 0x0001
# define ECB_DI 0x0080
# define ECB_SES 0x0400
# define ECB_S_G 0x1000
# define ECB_DSB 0x4000
# define ECB_ARS 0x8000
short opt2;
# define ECB_LUN 0x0007
# define ECB_TAG 0x0008
# define ECB_TT 0x0030
# define ECB_ND 0x0040
# define ECB_DAT 0x0100
# define ECB_DIR 0x0200
# define ECB_ST 0x0400
# define ECB_CHK 0x0800
# define ECB_REC 0x4000
# define ECB_NRB 0x8000
u_short unused1;
physaddr data;
u_long datalen;
physaddr status;
physaddr chain;
short unused2;
short unused3;
physaddr sense;
u_char senselen;
u_char cdblen;
short cksum;
u_char cdb[12];
/*-----------------end of hardware supported fields----------------*/
struct ecb *next; /* in free list */
struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
int flags;
#define ECB_FREE 0
#define ECB_ACTIVE 1
#define ECB_ABORTED 2
#define ECB_IMMED 4
#define ECB_IMMED_FAIL 8
struct ahb_dma_seg ahb_dma[AHB_NSEG];
struct ahb_ecb_status ecb_status;
struct scsi_sense_data ecb_sense;
};
/*\f*/
struct ahb_data
{
int flags;
#define AHB_INIT 0x01;
int baseport;
struct ecb ecbs[NUM_CONCURRENT];
struct ecb *free_ecb;
int our_id; /* our scsi id */
int vect;
struct ecb *immed_ecb; /* an outstanding immediete command */
} ahb_data[NAHB];
int ahbprobe();
int ahb_attach();
int ahbintr();
int ahb_scsi_cmd();
int ahb_timeout();
struct ecb *cheat;
void ahbminphys();
long int ahb_adapter_info();
#ifdef MACH
struct isa_driver ahbdriver = { ahbprobe, 0, ahb_attach, "ahb", 0, 0, 0};
int (*ahbintrs[])() = {ahbintr, 0};
#endif MACH
#ifdef __386BSD__
struct isa_driver ahbdriver = { ahbprobe, ahb_attach, "ahb"};
#endif __386BSD__
#define MAX_SLOTS 8
static ahb_slot = 0; /* slot last board was found in */
static ahb_unit = 0;
int ahb_debug = 0;
#define AHB_SHOWECBS 0x01
#define AHB_SHOWINTS 0x02
#define AHB_SHOWCMDS 0x04
#define AHB_SHOWMISC 0x08
#define FAIL 1
#define SUCCESS 0
#define PAGESIZ 4096
struct scsi_switch ahb_switch =
{
ahb_scsi_cmd,
ahbminphys,
0,
0,
ahb_adapter_info,
"ahb",
0,0
};
/*\f*/
/***********************************************************************\
* Function to send a command out through a mailbox *
\***********************************************************************/
ahb_send_mbox( int unit
,int opcode
,int target
,struct ecb *ecb)
{
int port = ahb_data[unit].baseport;
int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
int s = splbio();
int stport = port + G2STAT;
while( ((inb(stport) & (G2STAT_BUSY | G2STAT_MBOX_EMPTY))
!= (G2STAT_MBOX_EMPTY))
&& (spincount--));
if(spincount == -1)
{
printf("ahb%d: board not responding\n",unit);
Debugger();
}
outl(port + MBOXOUT0,KVTOPHYS(ecb)); /* don't know this will work */
outb(port + ATTN, opcode|target);
splx(s);
}
/***********************************************************************\
* Function to poll for command completion when in poll mode *
\***********************************************************************/
ahb_poll(int unit ,int wait) /* in msec */
{
int port = ahb_data[unit].baseport;
int spincount = FUDGE(delaycount) * wait; /* in msec */
int stport = port + G2STAT;
int start = spincount;
retry:
while( (spincount--) && (!(inb(stport) & G2STAT_INT_PEND)));
if(spincount == -1)
{
printf("ahb%d: board not responding\n",unit);
return(EIO);
}
if ((int)cheat != PHYSTOKV(inl(port + MBOXIN0)))
{
printf("discarding %x ",inl(port + MBOXIN0));
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
spinwait(50);
goto retry;
}/* don't know this will work */
ahbintr(unit);
return(0);
}
/***********************************************************************\
* Function to send an immediate type command to the adapter *
\***********************************************************************/
ahb_send_immed( int unit
,int target
,u_long cmd)
{
int port = ahb_data[unit].baseport;
int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
int s = splbio();
int stport = port + G2STAT;
while( ((inb(stport) & (G2STAT_BUSY | G2STAT_MBOX_EMPTY))
!= (G2STAT_MBOX_EMPTY))
&& (spincount--));
if(spincount == -1)
{
printf("ahb%d: board not responding\n",unit);
Debugger();
}
outl(port + MBOXOUT0,cmd); /* don't know this will work */
outb(port + G2CNTRL, G2CNTRL_SET_HOST_READY);
outb(port + ATTN, OP_IMMED | target);
splx(s);
}
/*\f*/
/*******************************************************\
* Check the slots looking for a board we recognise *
* If we find one, note it's address (slot) and call *
* the actual probe routine to check it out. *
\*******************************************************/
ahbprobe(dev)
struct isa_dev *dev;
{
int port;
u_char byte1,byte2,byte3;
ahb_slot++;
while (ahb_slot<8)
{
port = 0x1000 * ahb_slot;
byte1 = inb(port + HID0);
byte2 = inb(port + HID1);
byte3 = inb(port + HID2);
if(byte1 == 0xff)
{
ahb_slot++;
continue;
}
if ((CHAR1(byte1,byte2) == 'A')
&& (CHAR2(byte1,byte2) == 'D')
&& (CHAR3(byte1,byte2) == 'P')
&& ((byte3 == 0 ) || (byte3 == 1)))
{
dev->dev_addr = port;
return(ahbprobe1(dev));
}
ahb_slot++;
}
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 *
\*******************************************************/
ahbprobe1(dev)
struct isa_dev *dev;
{
/***********************************************\
* find unit and check we have that many defined *
\***********************************************/
int unit = ahb_unit;
#if defined(OSF)
static ihandler_t ahb_handler[NAHB];
static ihandler_id_t *ahb_handler_id[NAHB];
register ihandler_t *chp = &ahb_handler[unit];;
#endif /* defined(OSF) */
dev->dev_unit = unit;
ahb_data[unit].baseport = dev->dev_addr;
if(unit >= NAHB)
{
printf("ahb: unit number (%d) too high\n",unit);
return(0);
}
/***********************************************\
* Try initialise a unit at this location *
* sets up dma and bus speed, loads ahb_data[unit].vect*
\***********************************************/
if (ahb_init(unit) != 0)
{
return(0);
}
/***********************************************\
* If it's there, put in it's interrupt vectors *
\***********************************************/
#ifdef MACH
dev->dev_pic = ahb_data[unit].vect;
#if defined(OSF) /* OSF */
chp->ih_level = dev->dev_pic;
chp->ih_handler = dev->dev_intr[0];
chp->ih_resolver = i386_resolver;
chp->ih_rdev = dev;
chp->ih_stats.intr_type = INTR_DEVICE;
chp->ih_stats.intr_cnt = 0;
chp->ih_hparam[0].intparam = unit;
if ((ahb_handler_id[unit] = handler_add(chp)) != NULL)
handler_enable(ahb_handler_id[unit]);
else
panic("Unable to add ahb interrupt handler");
#else /* CMU */
take_dev_irq(dev);
#endif /* !defined(OSF) */
printf("port=%x spl=%d\n", dev->dev_addr, dev->dev_spl);
#endif MACH
#ifdef __386BSD__ /* 386BSD */
dev->id_irq = (1 << ahb_data[unit].vect);
dev->id_drq = -1; /* use EISA dma */
#endif __386BSD__
ahb_unit++;
return(1);
}
/***********************************************\
* Attach all the sub-devices we can find *
\***********************************************/
ahb_attach(dev)
struct isa_dev *dev;
{
int unit = dev->dev_unit;
/***********************************************\
* ask the adapter what subunits are present *
\***********************************************/
scsi_attachdevs( unit, ahb_data[unit].our_id, &ahb_switch);
#if defined(OSF)
ahb_attached[unit]=1;
#endif /* defined(OSF) */
return;
}
/***********************************************\
* Return some information to the caller about *
* the adapter and it's capabilities *
\***********************************************/
long int ahb_adapter_info(unit)
int unit;
{
return(2); /* 2 outstanding requests at a time per device */
}
/***********************************************\
* Catch an interrupt from the adaptor *
\***********************************************/
ahbintr(unit)
{
struct ecb *ecb;
unsigned char stat;
register i;
u_char ahbstat;
int target;
long int mboxval;
int port = ahb_data[unit].baseport;
#ifdef AHBDEBUG
if(scsi_debug & PRINTROUTINES)
printf("ahbintr ");
#endif /*AHBDEBUG*/
#if defined(OSF)
if (!ahb_attached[unit])
{
return(1);
}
#endif /* defined(OSF) */
while(inb(port + G2STAT) & G2STAT_INT_PEND)
{
/***********************************************\
* First get all the information and then *
* acknowlege the interrupt *
\***********************************************/
ahbstat = inb(port + G2INTST);
target = ahbstat & G2INTST_TARGET;
stat = ahbstat & G2INTST_INT_STAT;
mboxval = inl(port + MBOXIN0);/* don't know this will work */
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
#ifdef AHBDEBUG
if(scsi_debug & TRACEINTERRUPTS)
printf("status = 0x%x ",stat);
#endif /*AHBDEBUG*/
/***********************************************\
* Process the completed operation *
\***********************************************/
if(stat == AHB_ECB_OK) /* common case is fast */
{
ecb = (struct ecb *)PHYSTOKV(mboxval);
}
else
{
switch(stat)
{
case AHB_IMMED_OK:
ecb = ahb_data[unit].immed_ecb;
ahb_data[unit].immed_ecb = 0;
break;
case AHB_IMMED_ERR:
ecb = ahb_data[unit].immed_ecb;
ecb->flags |= ECB_IMMED_FAIL;
ahb_data[unit].immed_ecb = 0;
break;
case AHB_ASN: /* for target mode */
printf("ahb%d: Unexpected ASN interrupt(%x)\n",
unit, mboxval);
ecb = 0;
break;
case AHB_HW_ERR:
printf("ahb%d: Hardware error interrupt(%x)\n",
unit, mboxval);
ecb = 0;
break;
case AHB_ECB_RECOVERED:
ecb = (struct ecb *)PHYSTOKV(mboxval);
break;
case AHB_ECB_ERR:
ecb = (struct ecb *)PHYSTOKV(mboxval);
break;
default:
printf(" Unknown return from ahb%d(%x)\n",unit,ahbstat);
ecb=0;
}
}
if(ecb)
{
#ifdef AHBDEBUG
if(ahb_debug & AHB_SHOWCMDS )
{
ahb_show_scsi_cmd(ecb->xs);
}
if((ahb_debug & AHB_SHOWECBS) && ecb)
printf("<int ecb(%x)>",ecb);
#endif /*AHBDEBUG*/
untimeout(ahb_timeout,ecb);
ahb_done(unit,ecb,((stat == AHB_ECB_OK)?SUCCESS:FAIL));
}
}
return(1);
}
/***********************************************\
* We have a ecb which has been processed by the *
* adaptor, now we look to see how the operation *
* went. *
\***********************************************/
ahb_done(unit,ecb,state)
int unit,state;
struct ecb *ecb;
{
struct ahb_ecb_status *stat = &ecb->ecb_status;
struct scsi_sense_data *s1,*s2;
struct scsi_xfer *xs = ecb->xs;
#ifdef AHBDEBUG
if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS))
printf("ahb_done ");
#endif /*AHBDEBUG*/
/***********************************************\
* Otherwise, put the results of the operation *
* into the xfer and call whoever started it *
\***********************************************/
if(ecb->flags & ECB_IMMED)
{
if(ecb->flags & ECB_IMMED_FAIL)
{
xs->error = XS_DRIVER_STUFFUP;
}
goto done;
}
if ( (state == SUCCESS) || (xs->flags & SCSI_ERR_OK))
{ /* All went correctly OR errors expected */
xs->resid = 0;
xs->error = 0;
}
else
{
s1 = &(ecb->ecb_sense);
s2 = &(xs->sense);
if(stat->ha_status)
{
switch(stat->ha_status)
{
case HS_SCSI_RESET_ADAPTER:
break;
case HS_SCSI_RESET_INCOMING:
break;
case HS_CMD_ABORTED_HOST: /* No response */
case HS_CMD_ABORTED_ADAPTER: /* No response */
break;
case HS_TIMED_OUT: /* No response */
#ifdef AHBDEBUG
if (ahb_debug & AHB_SHOWMISC)
{
printf("timeout reported back\n");
}
#endif /*AHBDEBUG*/
xs->error = XS_TIMEOUT;
break;
default: /* Other scsi protocol messes */
xs->error = XS_DRIVER_STUFFUP;
#ifdef AHBDEBUG
if (ahb_debug & AHB_SHOWMISC)
{
printf("unexpected ha_status: %x\n",
stat->ha_status);
}
#endif /*AHBDEBUG*/
}
}
else
{
switch(stat->targ_status)
{
case TS_CHECK_CONDITION:
/* structure copy!!!!!*/
*s2=*s1;
xs->error = XS_SENSE;
break;
case TS_BUSY:
xs->error = XS_BUSY;
break;
default:
#ifdef AHBDEBUG
if (ahb_debug & AHB_SHOWMISC)
{
printf("unexpected targ_status: %x\n",
stat->targ_status);
}
#endif /*AHBDEBUG*/
xs->error = XS_DRIVER_STUFFUP;
}
}
}
done: xs->flags |= ITSDONE;
ahb_free_ecb(unit,ecb, xs->flags);
if(xs->when_done)
(*(xs->when_done))(xs->done_arg,xs->done_arg2);
}
/***********************************************\
* A ecb (and hence a mbx-out is put onto the *
* free list. *
\***********************************************/
ahb_free_ecb(unit,ecb, flags)
struct ecb *ecb;
{
unsigned int opri;
#ifdef AHBDEBUG
if(scsi_debug & PRINTROUTINES)
printf("ecb%d(0x%x)> ",unit,flags);
#endif /*AHBDEBUG*/
if (!(flags & SCSI_NOMASK))
opri = splbio();
ecb->next = ahb_data[unit].free_ecb;
ahb_data[unit].free_ecb = ecb;
ecb->flags = ECB_FREE;
/***********************************************\
* If there were none, wake abybody waiting for *
* one to come free, starting with queued entries*
\***********************************************/
if (!ecb->next) {
wakeup(&ahb_data[unit].free_ecb);
}
if (!(flags & SCSI_NOMASK))
splx(opri);
}
/***********************************************\
* Get a free ecb (and hence mbox-out entry) *
\***********************************************/
struct ecb *
ahb_get_ecb(unit,flags)
{
unsigned opri;
struct ecb *rc;
#ifdef AHBDEBUG
if(scsi_debug & PRINTROUTINES)
printf("<ecb%d(0x%x) ",unit,flags);
#endif /*AHBDEBUG*/
if (!(flags & SCSI_NOMASK))
opri = splbio();
/***********************************************\
* If we can and have to, sleep waiting for one *
* to come free *
\***********************************************/
while ((!(rc = ahb_data[unit].free_ecb)) && (!(flags & SCSI_NOSLEEP)))
{
sleep(&ahb_data[unit].free_ecb, PRIBIO);
}
if (rc)
{
ahb_data[unit].free_ecb = rc->next;
rc->flags = ECB_ACTIVE;
}
if (!(flags & SCSI_NOMASK))
splx(opri);
return(rc);
}
/***********************************************\
* Start the board, ready for normal operation *
\***********************************************/
ahb_init(unit)
int unit;
{
int port = ahb_data[unit].baseport;
int intdef;
int spincount = FUDGE(delaycount) * 1000; /* 1 sec enough? */
int i;
int stport = port + G2STAT;
#define NO_NO 1
#ifdef NO_NO
/***********************************************\
* reset board, If it doesn't respond, assume *
* that it's not there.. good for the probe *
\***********************************************/
outb(port + EBCTRL,CDEN); /* enable full card */
outb(port + PORTADDR,PORTADDR_ENHANCED);
outb(port + G2CNTRL,G2CNTRL_HARD_RESET);
spinwait(1);
outb(port + G2CNTRL,0);
spinwait(10);
while( ((inb(stport) & G2STAT_BUSY ))
&& (spincount--));
if(spincount == -1)
{
#ifdef AHBDEBUG
if (ahb_debug & AHB_SHOWMISC)
printf("ahb_init: No answer from bt742a board\n");
#endif /*AHBDEBUG*/
return(ENXIO);
}
i = inb(port + MBOXIN0) & 0xff;
if(i)
{
printf("self test failed, val = 0x%x\n",i);
return(EIO);
}
#endif
while( inb(stport) & G2STAT_INT_PEND)
{
printf(".");
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
spinwait(10);
}
outb(port + EBCTRL,CDEN); /* enable full card */
outb(port + PORTADDR,PORTADDR_ENHANCED);
/***********************************************\
* Assume we have a board at this stage *
* setup dma channel from jumpers and save int *
* level *
\***********************************************/
#ifdef __386BSD__
printf("ahb%d: reading board settings, ",unit);
#else __386BSD__
printf("ahb%d:",unit);
#endif __386BSD__
intdef = inb(port + INTDEF);
switch(intdef & 0x07)
{
case INT9:
ahb_data[unit].vect = 9;
break;
case INT10:
ahb_data[unit].vect = 10;
break;
case INT11:
ahb_data[unit].vect = 11;
break;
case INT12:
ahb_data[unit].vect = 12;
break;
case INT14:
ahb_data[unit].vect = 14;
break;
case INT15:
ahb_data[unit].vect = 15;
break;
default:
printf("illegal int setting\n");
return(EIO);
}
#ifdef __386BSD__
printf("int=%d\n",ahb_data[unit].vect);
#else __386BSD__
printf("int=%d ",ahb_data[unit].vect);
#endif __386BSD__
outb(port + INTDEF ,(intdef | INTEN)); /* make sure we can interrupt */
/* who are we on the scsi bus */
ahb_data[unit].our_id = (inb(port + SCSIDEF) & HSCSIID);
/***********************************************\
* link up all our ECBs into a free list *
\***********************************************/
for (i=0; i < NUM_CONCURRENT; i++)
{
ahb_data[unit].ecbs[i].next = ahb_data[unit].free_ecb;
ahb_data[unit].free_ecb = &ahb_data[unit].ecbs[i];
ahb_data[unit].free_ecb->flags = ECB_FREE;
}
/***********************************************\
* Note that we are going and return (to probe) *
\***********************************************/
ahb_data[unit].flags |= AHB_INIT;
return( 0 );
}
#ifndef min
#define min(x,y) (x < y ? x : y)
#endif min
void ahbminphys(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 > ((AHB_NSEG-1) * PAGESIZ))
{
bp->b_bcount = ((AHB_NSEG-1) * PAGESIZ);
}
}
/***********************************************\
* start a scsi operation given the command and *
* the data address. Also needs the unit, target *
* and lu *
\***********************************************/
int ahb_scsi_cmd(xs)
struct scsi_xfer *xs;
{
struct scsi_sense_data *s1,*s2;
struct ecb *ecb;
struct ahb_dma_seg *sg;
int seg; /* scatter gather seg being worked on */
int i = 0;
int rc = 0;
int thiskv;
physaddr thisphys,nextphys;
int unit =xs->adapter;
int bytes_this_seg,bytes_this_page,datalen,flags;
struct iovec *iovp;
int s;
#ifdef AHBDEBUG
if(scsi_debug & PRINTROUTINES)
printf("ahb_scsi_cmd ");
#endif /*AHBDEBUG*/
/***********************************************\
* get a ecb (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("ahb%d: Already done?",unit);
xs->flags &= ~ITSDONE;
}
if(!(flags & INUSE))
{
printf("ahb%d: Not in use?",unit);
xs->flags |= INUSE;
}
if (!(ecb = ahb_get_ecb(unit,flags)))
{
xs->error = XS_DRIVER_STUFFUP;
return(TRY_AGAIN_LATER);
}
cheat = ecb;
#ifdef AHBDEBUG
if(ahb_debug & AHB_SHOWECBS)
printf("<start ecb(%x)>",ecb);
if(scsi_debug & SHOWCOMMANDS)
{
ahb_show_scsi_cmd(xs);
}
#endif /*AHBDEBUG*/
ecb->xs = xs;
/***********************************************\
* If it's a reset, we need to do an 'immediate' *
* command, and store it's ccb for later *
* if there is already an immediate waiting, *
* then WE must wait *
\***********************************************/
if(flags & SCSI_RESET)
{
ecb->flags |= ECB_IMMED;
if(ahb_data[unit].immed_ecb)
{
return(TRY_AGAIN_LATER);
}
ahb_data[unit].immed_ecb = ecb;
if (!(flags & SCSI_NOMASK))
{
s = splbio();
ahb_send_immed(unit,xs->targ,AHB_TARG_RESET);
timeout(ahb_timeout,ecb,(xs->timeout * hz)/1000);
splx(s);
return(SUCCESSFULLY_QUEUED);
}
else
{
ahb_send_immed(unit,xs->targ,AHB_TARG_RESET);
/***********************************************\
* If we can't use interrupts, poll on completion*
\***********************************************/
#ifdef AHBDEBUG
if(scsi_debug & TRACEINTERRUPTS)
printf("wait ");
#endif /*AHBDEBUG*/
if( ahb_poll(unit,xs->timeout))
{
ahb_free_ecb(unit,ecb,flags);
xs->error = XS_TIMEOUT;
return(HAD_ERROR);
}
return(COMPLETE);
}
}
/***********************************************\
* Put all the arguments for the xfer in the ecb *
\***********************************************/
ecb->opcode = ECB_SCSI_OP;
ecb->opt1 = ECB_SES|ECB_DSB|ECB_ARS;
if(xs->datalen)
{
ecb->opt1 |= ECB_S_G;
}
ecb->opt2 = xs->lu | ECB_NRB;
ecb->cdblen = xs->cmdlen;
ecb->sense = KVTOPHYS(&(ecb->ecb_sense));
ecb->senselen = sizeof(ecb->ecb_sense);
ecb->status = KVTOPHYS(&(ecb->ecb_status));
if(xs->datalen)
{ /* should use S/G only if not zero length */
ecb->data = KVTOPHYS(ecb->ahb_dma);
sg = ecb->ahb_dma ;
seg = 0;
if(flags & SCSI_DATA_UIO)
{
iovp = ((struct uio *)xs->data)->uio_iov;
datalen = ((struct uio *)xs->data)->uio_iovcnt;
xs->datalen = 0;
while ((datalen) && (seg < AHB_NSEG))
{
sg->addr = (physaddr)iovp->iov_base;
xs->datalen += sg->len = iovp->iov_len;
#ifdef AHBDEBUG
if(scsi_debug & SHOWSCATGATH)
printf("(0x%x@0x%x)"
,iovp->iov_len
,iovp->iov_base);
#endif /*AHBDEBUG*/
sg++;
iovp++;
seg++;
datalen--;
}
}
else
{
/***********************************************\
* Set up the scatter gather block *
\***********************************************/
#ifdef AHBDEBUG
if(scsi_debug & SHOWSCATGATH)
printf("%d @0x%x:- ",xs->datalen,xs->data);
#endif /*AHBDEBUG*/
datalen = xs->datalen;
thiskv = (int)xs->data;
thisphys = KVTOPHYS(thiskv);
while ((datalen) && (seg < AHB_NSEG))
{
bytes_this_seg = 0;
/* put in the base address */
sg->addr = thisphys;
#ifdef AHBDEBUG
if(scsi_debug & SHOWSCATGATH)
printf("0x%x",thisphys);
#endif /*AHBDEBUG*/
/* do it at least once */
nextphys = thisphys;
while ((datalen) && (thisphys == nextphys))
/*********************************************\
* This page is contiguous (physically) with *
* the the last, just extend the length *
\*********************************************/
{
/* how far to the end of the page */
nextphys= (thisphys & (~(PAGESIZ - 1)))
+ PAGESIZ;
bytes_this_page = nextphys - thisphys;
/**** or the data ****/
bytes_this_page = min(bytes_this_page
,datalen);
bytes_this_seg += bytes_this_page;
datalen -= bytes_this_page;
/* get more ready for the next page */
thiskv = (thiskv & (~(PAGESIZ - 1)))
+ PAGESIZ;
if(datalen)
thisphys = KVTOPHYS(thiskv);
}
/********************************************\
* next page isn't contiguous, finish the seg *
\********************************************/
#ifdef AHBDEBUG
if(scsi_debug & SHOWSCATGATH)
printf("(0x%x)",bytes_this_seg);
#endif /*AHBDEBUG*/
sg->len = bytes_this_seg;
sg++;
seg++;
}
} /*end of iov/kv decision */
ecb->datalen = seg * sizeof(struct ahb_dma_seg);
#ifdef AHBDEBUG
if(scsi_debug & SHOWSCATGATH)
printf("\n");
#endif /*AHBDEBUG*/
if (datalen)
{ /* there's still data, must have run out of segs! */
printf("ahb_scsi_cmd%d: more than %d DMA segs\n",
unit,AHB_NSEG);
xs->error = XS_DRIVER_STUFFUP;
ahb_free_ecb(unit,ecb,flags);
return(HAD_ERROR);
}
}
else
{ /* No data xfer, use non S/G values */
ecb->data = (physaddr)0;
ecb->datalen = 0;
}
ecb->chain = (physaddr)0;
/***********************************************\
* Put the scsi command in the ecb and start it *
\***********************************************/
bcopy(xs->cmd, ecb->cdb, xs->cmdlen);
/***********************************************\
* Usually return SUCCESSFULLY QUEUED *
\***********************************************/
if (!(flags & SCSI_NOMASK))
{
s = splbio();
ahb_send_mbox(unit,OP_START_ECB,xs->targ,ecb);
timeout(ahb_timeout,ecb,(xs->timeout * hz)/1000);
splx(s);
#ifdef AHBDEBUG
if(scsi_debug & TRACEINTERRUPTS)
printf("cmd_sent ");
#endif /*AHBDEBUG*/
return(SUCCESSFULLY_QUEUED);
}
/***********************************************\
* If we can't use interrupts, poll on completion*
\***********************************************/
ahb_send_mbox(unit,OP_START_ECB,xs->targ,ecb);
#ifdef AHBDEBUG
if(scsi_debug & TRACEINTERRUPTS)
printf("cmd_wait ");
#endif /*AHBDEBUG*/
do
{
if(ahb_poll(unit,xs->timeout))
{
if (!(xs->flags & SCSI_SILENT)) printf("cmd fail\n");
ahb_send_mbox(unit,OP_ABORT_ECB,xs->targ,ecb);
if(ahb_poll(unit,2000))
{
printf("abort failed in wait\n");
ahb_free_ecb(unit,ecb,flags);
}
xs->error = XS_DRIVER_STUFFUP;
return(HAD_ERROR);
}
} while (!(xs->flags & ITSDONE));/* something (?) else finished */
if(xs->error)
{
return(HAD_ERROR);
}
return(COMPLETE);
}
ahb_timeout(struct ecb *ecb)
{
int unit;
int s = splbio();
unit = ecb->xs->adapter;
printf("ahb%d:%d device timed out\n",unit
,ecb->xs->targ);
#ifdef AHBDEBUG
if(ahb_debug & AHB_SHOWECBS)
ahb_print_active_ecb(unit);
#endif /*AHBDEBUG*/
/***************************************\
* If it's immediate, don't try abort it *
\***************************************/
if(ecb->flags & ECB_IMMED)
{
ecb->xs->retries = 0; /* I MEAN IT ! */
ecb->flags |= ECB_IMMED_FAIL;
ahb_done(unit,ecb,FAIL);
splx(s);
return;
}
/***************************************\
* If it has been through before, then *
* a previous abort has failed, don't *
* try abort again *
\***************************************/
if(ecb->flags == ECB_ABORTED) /* abort timed out */
{
printf("AGAIN");
ecb->xs->retries = 0; /* I MEAN IT ! */
ecb->ecb_status.ha_status = HS_CMD_ABORTED_HOST;
ahb_done(unit,ecb,FAIL);
}
else /* abort the operation that has timed out */
{
printf("\n");
ahb_send_mbox(unit,OP_ABORT_ECB,ecb->xs->targ,ecb);
/* 2 secs for the abort */
timeout(ahb_timeout,ecb,2 * hz);
ecb->flags = ECB_ABORTED;
}
splx(s);
}
#ifdef AHBDEBUG
ahb_show_scsi_cmd(struct scsi_xfer *xs)
{
u_char *b = (u_char *)xs->cmd;
int i = 0;
if(!(xs->flags & SCSI_RESET))
{
printf("ahb%d:%d:%d-"
,xs->adapter
,xs->targ
,xs->lu);
while(i < xs->cmdlen )
{
if(i) printf(",");
printf("%x",b[i++]);
}
printf("-\n");
}
else
{
printf("ahb%d:%d:%d-RESET-\n"
,xs->adapter
,xs->targ
,xs->lu
);
}
}
ahb_print_ecb(ecb)
struct ecb *ecb;
{
printf("ecb:%x op:%x cmdlen:%d senlen:%d\n"
,ecb
,ecb->opcode
,ecb->cdblen
,ecb->senselen);
printf(" datlen:%d hstat:%x tstat:%x flags:%x\n"
,ecb->datalen
,ecb->ecb_status.ha_status
,ecb->ecb_status.targ_status
,ecb->flags);
ahb_show_scsi_cmd(ecb->xs);
}
ahb_print_active_ecb(int unit)
{
struct ecb *ecb = ahb_data[unit].ecbs;
int i = NUM_CONCURRENT;
while(i--)
{
if(ecb->flags != ECB_FREE)
{
ahb_print_ecb(ecb);
}
ecb++;
}
}
#endif /*AHBDEBUG */
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.