1228 lines
28 KiB
C
1228 lines
28 KiB
C
/*
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* Written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: aha1742.c,v 1.19 1994/03/10 20:52:12 mycroft Exp $
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*/
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#include "ahb.h"
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#include <sys/types.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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#include <sys/dkbad.h>
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#include <sys/disklabel.h>
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#include <machine/cpu.h>
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#include <machine/pio.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <i386/isa/isa_device.h>
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#ifdef DDB
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int Debugger();
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#else DDB
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#define Debugger() panic("should call debugger here (adaptec.c)")
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#endif DDB
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typedef unsigned long int physaddr;
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#define PHYSTOKV(x) ((x) + KERNBASE)
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#define KVTOPHYS(x) vtophys(x)
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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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* 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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/* 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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#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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#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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#define G2STAT2_HOST_READY 0x01
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struct ahb_dma_seg {
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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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struct ecb {
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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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long int delta; /* difference from previous*/
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struct ecb *later,*sooner;
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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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struct ecb *ahb_soonest = (struct ecb *)0;
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struct ecb *ahb_latest = (struct ecb *)0;
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long int ahb_furtherest = 0; /* longest time in the timeout queue */
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struct ahb_data {
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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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struct ecb *cheat;
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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
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#define SUCCESS 0
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#define PAGESIZ 4096
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int ahbprobe(struct isa_device *);
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int ahbprobe1(struct isa_device *);
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int ahb_attach(struct isa_device *);
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long int ahb_adapter_info(int);
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int ahbintr(int);
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void ahb_done(int, struct ecb *, int);
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void ahb_free_ecb(int, struct ecb *, int);
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struct ecb * ahb_get_ecb(int, int);
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int ahb_init(int);
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void ahbminphys(struct buf *);
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int ahb_scsi_cmd(struct scsi_xfer *);
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void ahb_add_timeout(struct ecb *, int);
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void ahb_remove_timeout(struct ecb *);
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void ahb_timeout(int);
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void ahb_show_scsi_cmd(struct scsi_xfer *);
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void ahb_print_ecb(struct ecb *);
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void ahb_print_active_ecb(void);
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struct isa_driver ahbdriver = {
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ahbprobe,
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ahb_attach,
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"ahb"
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};
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struct scsi_switch ahb_switch[NAHB];
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/*
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* Function to send a command out through a mailbox
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*/
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void
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ahb_send_mbox(int unit, int opcode, int target, struct ecb *ecb)
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{
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int port = ahb_data[unit].baseport;
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int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
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int stport = port + G2STAT, s;
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s = splbio();
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while( ((inb(stport) &
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(G2STAT_BUSY | G2STAT_MBOX_EMPTY)) != G2STAT_MBOX_EMPTY)
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&& spincount--)
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;
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if(spincount == -1) {
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printf("ahb%d: board not responding\n",unit);
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Debugger();
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}
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outl(port+MBOXOUT0, KVTOPHYS(ecb)); /* don't know this will work */
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outb(port+ATTN, opcode|target);
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splx(s);
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}
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/*
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* Function to poll for command completion when in poll mode
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* wait is in msec
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*/
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int
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ahb_poll(int unit, int wait)
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{
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int port = ahb_data[unit].baseport;
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int spincount = FUDGE(delaycount) * wait; /* in msec */
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int stport = port + G2STAT;
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int start = spincount;
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retry:
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while( spincount-- && (!(inb(stport) & G2STAT_INT_PEND)))
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;
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if(spincount == -1) {
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printf("ahb%d: board not responding\n",unit);
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return(EIO);
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}
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if( (int)cheat != PHYSTOKV(inl(port+MBOXIN0)) ) {
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printf("discarding %x ", inl(port+MBOXIN0));
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outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
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spinwait(50);
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goto retry;
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}
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ahbintr(unit);
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return(0);
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}
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/*
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* Function to send an immediate type command to the adapter
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*/
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void
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ahb_send_immed(int unit, int target, u_long cmd)
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{
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int port = ahb_data[unit].baseport;
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int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
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int s = splbio();
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int stport = port + G2STAT;
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while( ((inb(stport) &
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(G2STAT_BUSY | G2STAT_MBOX_EMPTY)) != (G2STAT_MBOX_EMPTY)) &&
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spincount--)
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;
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if(spincount == -1) {
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printf("ahb%d: board not responding\n",unit);
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Debugger();
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}
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outl(port + MBOXOUT0, cmd); /* don't know this will work */
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outb(port + G2CNTRL, G2CNTRL_SET_HOST_READY);
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outb(port + ATTN, OP_IMMED | target);
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splx(s);
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}
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/*
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* Check the slots looking for a board we recognise
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* If we find one, note it's address (slot) and call
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* the actual probe routine to check it out.
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*/
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int
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ahbprobe(struct isa_device *dev)
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{
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int port;
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u_char byte1,byte2,byte3;
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if (dev->id_masunit != -1)
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return 1;
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ahb_slot++;
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while (ahb_slot<8) {
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port = 0x1000 * ahb_slot;
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byte1 = inb(port + HID0);
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byte2 = inb(port + HID1);
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byte3 = inb(port + HID2);
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if(byte1 == 0xff) {
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ahb_slot++;
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continue;
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}
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if ((CHAR1(byte1,byte2) == 'A')
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&& (CHAR2(byte1,byte2) == 'D')
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&& (CHAR3(byte1,byte2) == 'P')
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&& ((byte3 == 0 ) || (byte3 == 1))) {
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dev->id_iobase = port;
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return ahbprobe1(dev);
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}
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ahb_slot++;
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}
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return 0;
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}
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/*
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* Check if the device can be found at the port given *
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* and if so, set it up ready for further work *
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* as an argument, takes the isa_device structure from *
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* autoconf.c *
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*/
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int
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ahbprobe1(struct isa_device *dev)
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{
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int unit = ahb_unit;
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dev->id_unit = unit;
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ahb_data[unit].baseport = dev->id_iobase;
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if(unit >= NAHB) {
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printf("ahb: unit number (%d) too high\n",unit);
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return 0;
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}
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/*
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* Try initialise a unit at this location
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* sets up dma and bus speed, loads ahb_data[unit].vect*
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*/
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if (ahb_init(unit) != 0)
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return 0;
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/* If it's there, put in it's interrupt vectors */
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dev->id_irq = (1 << ahb_data[unit].vect);
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dev->id_drq = -1; /* using EISA dma */
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ahb_unit++;
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return 0x1000;
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}
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/*
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* Attach all the sub-devices we can find
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*/
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int
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ahb_attach(struct isa_device *dev)
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{
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static int firsttime;
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static int firstswitch[NAHB];
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int masunit = dev->id_masunit;
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int r;
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if (masunit == -1)
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return 1;
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if (!firstswitch[masunit]) {
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firstswitch[masunit] = 1;
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ahb_switch[masunit].name = "ahb";
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ahb_switch[masunit].scsi_cmd = ahb_scsi_cmd;
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ahb_switch[masunit].scsi_minphys = ahbminphys;
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ahb_switch[masunit].open_target_lu = 0;
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ahb_switch[masunit].close_target_lu = 0;
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ahb_switch[masunit].adapter_info = ahb_adapter_info;
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for (r = 0; r < 8; r++) {
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ahb_switch[masunit].empty[r] = 0;
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ahb_switch[masunit].used[r] = 0;
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ahb_switch[masunit].printed[r] = 0;
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}
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}
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r = scsi_attach(masunit, ahb_data[masunit].our_id, &ahb_switch[masunit],
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&dev->id_physid, &dev->id_unit, dev->id_flags);
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/* only one for all boards */
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if(firsttime==0) {
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firsttime = 1;
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ahb_timeout(0);
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}
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return r;
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}
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/*
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* Return some information to the caller about *
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* the adapter and it's capabilities *
|
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* 2 outstanding requests at a time per device
|
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*/
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long int
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ahb_adapter_info(int unit)
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{
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return 2;
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}
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|
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/*
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* Catch an interrupt from the adaptor
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*/
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int
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ahbintr(int unit)
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{
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struct ecb *ecb;
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unsigned char stat;
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register i;
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u_char ahbstat;
|
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int target;
|
|
long int mboxval;
|
|
|
|
int port = ahb_data[unit].baseport;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ahbintr ");
|
|
|
|
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);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("status = 0x%x ",stat);
|
|
|
|
/*
|
|
* Process the completed operation
|
|
*/
|
|
if(stat == AHB_ECB_OK)
|
|
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 */
|
|
ecb = 0;
|
|
break;
|
|
case AHB_HW_ERR:
|
|
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) {
|
|
if(ahb_debug & AHB_SHOWCMDS )
|
|
ahb_show_scsi_cmd(ecb->xs);
|
|
if((ahb_debug & AHB_SHOWECBS) && ecb)
|
|
printf("<int ecb(%x)>",ecb);
|
|
ahb_remove_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.
|
|
*/
|
|
void
|
|
ahb_done(int unit, struct ecb *ecb, int state)
|
|
{
|
|
struct ahb_ecb_status *stat = &ecb->ecb_status;
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct scsi_xfer *xs = ecb->xs;
|
|
|
|
if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS))
|
|
printf("ahb_done ");
|
|
|
|
/*
|
|
* 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 */
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("timeout reported back\n");
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
default:
|
|
/* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("unexpected ha_status: %x\n",
|
|
stat->ha_status);
|
|
}
|
|
|
|
} else {
|
|
switch(stat->targ_status) {
|
|
case TS_CHECK_CONDITION:
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case TS_BUSY:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("unexpected targ_status: %x\n",
|
|
stat->targ_status);
|
|
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.
|
|
*/
|
|
void
|
|
ahb_free_ecb(int unit, struct ecb *ecb, int flags)
|
|
{
|
|
unsigned int opri;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ecb%d(0x%x)> ",unit,flags);
|
|
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((caddr_t)&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(int unit, int flags)
|
|
{
|
|
unsigned opri;
|
|
struct ecb *rc;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("<ecb%d(0x%x) ", unit, flags);
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
/*
|
|
* If we can and have to, sleep waiting for one
|
|
* to come free
|
|
*/
|
|
while ((!(rc = ahb_data[unit].free_ecb)) && (!(flags & SCSI_NOSLEEP)))
|
|
sleep((caddr_t)&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
|
|
*/
|
|
int
|
|
ahb_init(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) {
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("ahb_init: No answer from bt742a board\n");
|
|
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
|
|
*/
|
|
|
|
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:
|
|
ahb_data[unit].vect = -1;
|
|
printf("ahb%d: illegal irq setting\n", unit);
|
|
return(EIO);
|
|
}
|
|
|
|
outb(port + INTDEF, intdef|INTEN); /* make sure we can interrupt */
|
|
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;
|
|
}
|
|
|
|
void
|
|
ahbminphys(struct buf *bp)
|
|
{
|
|
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(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;
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ahb_scsi_cmd ");
|
|
/*
|
|
* 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("Already done?");
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if( !(flags & INUSE) ) {
|
|
printf("Not in use?");
|
|
xs->flags |= INUSE;
|
|
}
|
|
if (!(ecb = ahb_get_ecb(unit,flags))) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(TRY_AGAIN_LATER);
|
|
}
|
|
|
|
cheat = ecb;
|
|
|
|
if(ahb_debug & AHB_SHOWECBS)
|
|
printf("<start ecb(%x)>",ecb);
|
|
if(scsi_debug & SHOWCOMMANDS)
|
|
ahb_show_scsi_cmd(xs);
|
|
|
|
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);
|
|
ahb_add_timeout(ecb,xs->timeout);
|
|
splx(s);
|
|
return(SUCCESSFULLY_QUEUED);
|
|
} else {
|
|
ahb_send_immed(unit,xs->targ,AHB_TARG_RESET);
|
|
/*
|
|
* If we can't use interrupts, poll on completion*
|
|
*/
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("wait ");
|
|
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;
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x@0x%x)", iovp->iov_len,
|
|
iovp->iov_base);
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
} else {
|
|
/* Set up the scatter gather block */
|
|
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("%d @0x%x:- ", xs->datalen, xs->data);
|
|
datalen = xs->datalen;
|
|
thiskv = (int)xs->data;
|
|
thisphys = KVTOPHYS(thiskv);
|
|
|
|
while ((datalen) && (seg < AHB_NSEG)) {
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
sg->addr = thisphys;
|
|
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("0x%x",thisphys);
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while ((datalen) && (thisphys == nextphys)) {
|
|
/*
|
|
* This page is contiguous (physically) with *
|
|
* the the last, just extend the length *
|
|
*/
|
|
nextphys= (thisphys & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
bytes_this_page = min(nextphys - thisphys,
|
|
datalen);
|
|
bytes_this_seg += bytes_this_page;
|
|
datalen -= bytes_this_page;
|
|
|
|
/* get more ready for the next page */
|
|
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
if(datalen)
|
|
thisphys = KVTOPHYS(thiskv);
|
|
}
|
|
/*
|
|
* next page isn't contiguous, finish the seg *
|
|
*/
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x)",bytes_this_seg);
|
|
sg->len = bytes_this_seg;
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
ecb->datalen = seg * sizeof(struct ahb_dma_seg);
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("\n");
|
|
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);
|
|
ahb_add_timeout(ecb,xs->timeout);
|
|
splx(s);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_sent ");
|
|
return(SUCCESSFULLY_QUEUED);
|
|
}
|
|
|
|
/* If we can't use interrupts, poll on completion */
|
|
ahb_send_mbox(unit,OP_START_ECB,xs->targ,ecb);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_wait ");
|
|
|
|
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));
|
|
|
|
scsi_debug = 0;
|
|
ahb_debug = 0;
|
|
if(xs->error)
|
|
return HAD_ERROR;
|
|
return COMPLETE;
|
|
}
|
|
|
|
/*
|
|
* +----------+ +----------+ +----------+
|
|
* ahb_soonest--->| later |--->| later|--->| later|--->0
|
|
* | [Delta] | | [Delta] | | [Delta] |
|
|
* 0<---|sooner |<---|sooner |<---|sooner |<---ahb_latest
|
|
* +----------+ +----------+ +----------+
|
|
*
|
|
* ahb_furtherest = sum(Delta[1..n])
|
|
*/
|
|
void
|
|
ahb_add_timeout(struct ecb *ecb, int time)
|
|
{
|
|
int timeprev;
|
|
struct ecb *prev;
|
|
int s = splbio();
|
|
|
|
prev = ahb_latest;
|
|
if(prev)
|
|
timeprev = ahb_furtherest;
|
|
else
|
|
timeprev = 0;
|
|
|
|
while(prev && (timeprev > time)) {
|
|
timeprev -= prev->delta;
|
|
prev = prev->sooner;
|
|
}
|
|
if(prev) {
|
|
ecb->delta = time - timeprev;
|
|
ecb->later = prev->later;
|
|
if(ecb->later) {
|
|
ecb->later->sooner = ecb;
|
|
ecb->later->delta -= ecb->delta;
|
|
} else {
|
|
ahb_furtherest = time;
|
|
ahb_latest = ecb;
|
|
}
|
|
ecb->sooner = prev;
|
|
prev->later = ecb;
|
|
}
|
|
else
|
|
{
|
|
ecb->later = ahb_soonest;
|
|
if(ahb_soonest) {
|
|
ecb->later->sooner = ecb;
|
|
ecb->later->delta -= time;
|
|
} else {
|
|
ahb_furtherest = time;
|
|
ahb_latest = ecb;
|
|
}
|
|
ecb->delta = time;
|
|
ecb->sooner = (struct ecb *)0;
|
|
ahb_soonest = ecb;
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
ahb_remove_timeout(struct ecb *ecb)
|
|
{
|
|
int s = splbio();
|
|
|
|
if(ecb->sooner)
|
|
ecb->sooner->later = ecb->later;
|
|
else
|
|
ahb_soonest = ecb->later;
|
|
|
|
if(ecb->later) {
|
|
ecb->later->sooner = ecb->sooner;
|
|
ecb->later->delta += ecb->delta;
|
|
} else {
|
|
ahb_latest = ecb->sooner;
|
|
ahb_furtherest -= ecb->delta;
|
|
}
|
|
ecb->sooner = ecb->later = (struct ecb *)0;
|
|
splx(s);
|
|
}
|
|
|
|
|
|
extern int hz;
|
|
#define ONETICK 500 /* milliseconds */
|
|
#define SLEEPTIME ((hz * 1000) / ONETICK)
|
|
|
|
void
|
|
ahb_timeout(int arg)
|
|
{
|
|
struct ecb *ecb;
|
|
int unit;
|
|
int s = splbio();
|
|
|
|
while( ecb = ahb_soonest ) {
|
|
if(ecb->delta <= ONETICK) {
|
|
/* It has timed out, we need to do some work */
|
|
unit = ecb->xs->adapter;
|
|
printf("ahb%d targ %d: device timed out\n", unit,
|
|
ecb->xs->targ);
|
|
if(ahb_debug & AHB_SHOWECBS)
|
|
ahb_print_active_ecb();
|
|
|
|
/* Unlink it from the queue */
|
|
ahb_remove_timeout(ecb);
|
|
|
|
/*
|
|
* 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);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If it has been through before, then
|
|
* a previous abort has failed, don't
|
|
* try abort again
|
|
*/
|
|
if(ecb->flags == ECB_ABORTED) {
|
|
printf("AGAIN");
|
|
ecb->xs->retries = 0; /* I MEAN IT ! */
|
|
ecb->ecb_status.ha_status = HS_CMD_ABORTED_HOST;
|
|
ahb_done(unit,ecb,FAIL);
|
|
} else {
|
|
printf("\n");
|
|
ahb_send_mbox(unit,OP_ABORT_ECB,ecb->xs->targ,ecb);
|
|
/* 2 secs for the abort */
|
|
ahb_add_timeout(ecb,2000 + ONETICK);
|
|
ecb->flags = ECB_ABORTED;
|
|
}
|
|
} else {
|
|
ecb->delta -= ONETICK;
|
|
ahb_furtherest -= ONETICK;
|
|
break;
|
|
}
|
|
}
|
|
splx(s);
|
|
timeout((timeout_t)ahb_timeout,(caddr_t)arg,SLEEPTIME);
|
|
}
|
|
|
|
void
|
|
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 targ %d lun %d:", xs->adapter,
|
|
xs->targ, xs->lu);
|
|
while(i < xs->cmdlen ) {
|
|
if(i)
|
|
printf(",");
|
|
printf("%x", b[i++]);
|
|
}
|
|
printf("\n");
|
|
} else {
|
|
printf("ahb%d targ %d lun%d: RESET\n", xs->adapter,
|
|
xs->targ, xs->lu);
|
|
}
|
|
}
|
|
|
|
void
|
|
ahb_print_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 delta:%d flags:%x\n",
|
|
ecb->datalen, ecb->ecb_status.ha_status,
|
|
ecb->ecb_status.targ_status, ecb->delta, ecb->flags);
|
|
ahb_show_scsi_cmd(ecb->xs);
|
|
}
|
|
|
|
void
|
|
ahb_print_active_ecb(void)
|
|
{
|
|
struct ecb *ecb;
|
|
ecb = ahb_soonest;
|
|
|
|
while(ecb) {
|
|
ahb_print_ecb(ecb);
|
|
ecb = ecb->later;
|
|
}
|
|
printf("Furtherest = %d\n", ahb_furtherest);
|
|
}
|