1323 lines
32 KiB
C
1323 lines
32 KiB
C
/*
|
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* Written by Julian Elischer (julian@tfs.com)
|
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
|
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*
|
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* TRW Financial Systems, in accordance with their agreement with Carnegie
|
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* Mellon University, makes this software available to CMU to distribute
|
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* or use in any manner that they see fit as long as this message is kept with
|
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* the software. For this reason TFS also grants any other persons or
|
||
* organisations permission to use or modify this software.
|
||
*
|
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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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*
|
||
* commenced: Sun Sep 27 18:14:01 PDT 1992
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*
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* $Id: aha1742.c,v 1.9 1993/08/28 03:07:40 rgrimes Exp $
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*/
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|
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#include <sys/types.h>
|
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#include <ahb.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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|
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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>
|
||
|
||
#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>
|
||
#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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/* */
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#ifdef __386BSD__
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||
#include "ddb.h"
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#if NDDB > 0
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int Debugger();
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#else NDDB
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#define Debugger() panic("should call debugger here (adaptec.c)")
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#endif NDDB
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#endif __386BSD__
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#ifdef MACH
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int Debugger();
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#endif MACH
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typedef unsigned long int physaddr;
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extern int hz;
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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 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 AHB_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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/***********************************************************************\
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* AHA1740 standard EISA Host ID regs (Offset from slot base) *
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\***********************************************************************/
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#define HID0 0xC80 /* 0,1: msb of ID2, 3-7: ID1 */
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#define HID1 0xC81 /* 0-4: ID3, 4-7: LSB ID2 */
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#define HID2 0xC82 /* product, 0=174[20] 1 = 1744 */
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#define HID3 0xC83 /* firmware revision */
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#define CHAR1(B1,B2) (((B1>>2) & 0x1F) | '@')
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#define CHAR2(B1,B2) (((B1<<3) & 0x18) | ((B2>>5) & 0x7)|'@')
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#define CHAR3(B1,B2) ((B2 & 0x1F) | '@')
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|
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/* AHA1740 EISA board control registers (Offset from slot base) */
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#define EBCTRL 0xC84
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#define CDEN 0x01
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/***********************************************************************\
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* AHA1740 EISA board mode registers (Offset from slot base) *
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\***********************************************************************/
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#define PORTADDR 0xCC0
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#define PORTADDR_ENHANCED 0x80
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#define BIOSADDR 0xCC1
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#define INTDEF 0xCC2
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#define SCSIDEF 0xCC3
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#define BUSDEF 0xCC4
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#define RESV0 0xCC5
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#define RESV1 0xCC6
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#define RESV2 0xCC7
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/**** bit definitions for INTDEF ****/
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#define INT9 0x00
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#define INT10 0x01
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#define INT11 0x02
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#define INT12 0x03
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#define INT14 0x05
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#define INT15 0x06
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#define INTHIGH 0x08 /* int high=ACTIVE (else edge) */
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#define INTEN 0x10
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/**** bit definitions for SCSIDEF ****/
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#define HSCSIID 0x0F /* our SCSI ID */
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#define RSTPWR 0x10 /* reset scsi bus on power up or reset */
|
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/**** bit definitions for BUSDEF ****/
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#define B0uS 0x00 /* give up bus immediatly */
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#define B4uS 0x01 /* delay 4uSec. */
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#define B8uS 0x02
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/***********************************************************************\
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* AHA1740 ENHANCED mode mailbox control regs (Offset from slot base) *
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\***********************************************************************/
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#define MBOXOUT0 0xCD0
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#define MBOXOUT1 0xCD1
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#define MBOXOUT2 0xCD2
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#define MBOXOUT3 0xCD3
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#define ATTN 0xCD4
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#define G2CNTRL 0xCD5
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#define G2INTST 0xCD6
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#define G2STAT 0xCD7
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#define MBOXIN0 0xCD8
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#define MBOXIN1 0xCD9
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#define MBOXIN2 0xCDA
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#define MBOXIN3 0xCDB
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#define G2STAT2 0xCDC
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/*******************************************************\
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* Bit definitions for the 5 control/status registers *
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\*******************************************************/
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#define ATTN_TARGET 0x0F
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#define ATTN_OPCODE 0xF0
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#define OP_IMMED 0x10
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#define AHB_TARG_RESET 0x80
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#define OP_START_ECB 0x40
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#define OP_ABORT_ECB 0x50
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#define G2CNTRL_SET_HOST_READY 0x20
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#define G2CNTRL_CLEAR_EISA_INT 0x40
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#define G2CNTRL_HARD_RESET 0x80
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|
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#define G2INTST_TARGET 0x0F
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#define G2INTST_INT_STAT 0xF0
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||
#define AHB_ECB_OK 0x10
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#define AHB_ECB_RECOVERED 0x50
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#define AHB_HW_ERR 0x70
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#define AHB_IMMED_OK 0xA0
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#define AHB_ECB_ERR 0xC0
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||
#define AHB_ASN 0xD0 /* for target mode */
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#define AHB_IMMED_ERR 0xE0
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||
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#define G2STAT_BUSY 0x01
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||
#define G2STAT_INT_PEND 0x02
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||
#define G2STAT_MBOX_EMPTY 0x04
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||
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#define G2STAT2_HOST_READY 0x01
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||
/* */
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struct ahb_dma_seg
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{
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physaddr addr;
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long len;
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};
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struct ahb_ecb_status
|
||
{
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||
u_short status;
|
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# define ST_DON 0x0001
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||
# define ST_DU 0x0002
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# define ST_QF 0x0008
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# define ST_SC 0x0010
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# define ST_DO 0x0020
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# define ST_CH 0x0040
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# define ST_INT 0x0080
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# define ST_ASA 0x0100
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# define ST_SNS 0x0200
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# define ST_INI 0x0800
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# define ST_ME 0x1000
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# define ST_ECA 0x4000
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u_char ha_status;
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# define HS_OK 0x00
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# define HS_CMD_ABORTED_HOST 0x04
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# define HS_CMD_ABORTED_ADAPTER 0x05
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# define HS_TIMED_OUT 0x11
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# define HS_HARDWARE_ERR 0x20
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# define HS_SCSI_RESET_ADAPTER 0x22
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# define HS_SCSI_RESET_INCOMING 0x23
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u_char targ_status;
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# define TS_OK 0x00
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# define TS_CHECK_CONDITION 0x02
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# define TS_BUSY 0x08
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u_long resid_count;
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u_long resid_addr;
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u_short addit_status;
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u_char sense_len;
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u_char unused[9];
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u_char cdb[6];
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};
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/* */
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struct ecb
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{
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u_char opcode;
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# define ECB_SCSI_OP 0x01
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u_char :4;
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u_char options:3;
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u_char :1;
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short opt1;
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# define ECB_CNE 0x0001
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# define ECB_DI 0x0080
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# define ECB_SES 0x0400
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# define ECB_S_G 0x1000
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# define ECB_DSB 0x4000
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# define ECB_ARS 0x8000
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short opt2;
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# define ECB_LUN 0x0007
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# define ECB_TAG 0x0008
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# define ECB_TT 0x0030
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# define ECB_ND 0x0040
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# define ECB_DAT 0x0100
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# define ECB_DIR 0x0200
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# define ECB_ST 0x0400
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# define ECB_CHK 0x0800
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# define ECB_REC 0x4000
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# define ECB_NRB 0x8000
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u_short unused1;
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physaddr data;
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u_long datalen;
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physaddr status;
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physaddr chain;
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short unused2;
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short unused3;
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physaddr sense;
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u_char senselen;
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u_char cdblen;
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short cksum;
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u_char cdb[12];
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/*-----------------end of hardware supported fields----------------*/
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struct ecb *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 ECB_FREE 0
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#define ECB_ACTIVE 1
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#define ECB_ABORTED 2
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#define ECB_IMMED 4
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#define ECB_IMMED_FAIL 8
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struct ahb_dma_seg ahb_dma[AHB_NSEG];
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struct ahb_ecb_status ecb_status;
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struct scsi_sense_data ecb_sense;
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};
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/* */
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struct ahb_data
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{
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int flags;
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#define AHB_INIT 0x01;
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int baseport;
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struct ecb ecbs[NUM_CONCURRENT];
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struct ecb *free_ecb;
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int our_id; /* our scsi id */
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int vect;
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struct ecb *immed_ecb; /* an outstanding immediete command */
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} ahb_data[NAHB];
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int ahbprobe();
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int ahb_attach();
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int ahbintr();
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int ahb_scsi_cmd();
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int ahb_timeout();
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struct ecb *cheat;
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void ahbminphys();
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long int ahb_adapter_info();
|
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|
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#ifdef MACH
|
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struct isa_driver ahbdriver = { ahbprobe, 0, ahb_attach, "ahb", 0, 0, 0};
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int (*ahbintrs[])() = {ahbintr, 0};
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#endif MACH
|
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|
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#ifdef __386BSD__
|
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struct isa_driver ahbdriver = { ahbprobe, ahb_attach, "ahb"};
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#endif __386BSD__
|
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|
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#define MAX_SLOTS 8
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static ahb_slot = 0; /* slot last board was found in */
|
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static ahb_unit = 0;
|
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int ahb_debug = 0;
|
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#define AHB_SHOWECBS 0x01
|
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#define AHB_SHOWINTS 0x02
|
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#define AHB_SHOWCMDS 0x04
|
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#define AHB_SHOWMISC 0x08
|
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#define FAIL 1
|
||
#define SUCCESS 0
|
||
#define PAGESIZ 4096
|
||
|
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struct scsi_switch ahb_switch =
|
||
{
|
||
ahb_scsi_cmd,
|
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ahbminphys,
|
||
0,
|
||
0,
|
||
ahb_adapter_info,
|
||
"ahb",
|
||
0,0
|
||
};
|
||
|
||
/* */
|
||
/***********************************************************************\
|
||
* 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();
|
||
}
|
||
|
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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);
|
||
}
|
||
|
||
/* */
|
||
|
||
/*******************************************************\
|
||
* 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 */
|