1309 lines
30 KiB
C
1309 lines
30 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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* commenced: Sun Sep 27 18:14:01 PDT 1992
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*
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* $Id: aha1742.c,v 1.59 1997/07/20 06:31:08 bde Exp $
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*/
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#ifdef KERNEL /* don't laugh, it compiles as a program too.. look */
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#include "opt_ddb.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <scsi/scsiconf.h>
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#include <scsi/scsi_debug.h>
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#include <machine/clock.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <i386/eisa/eisaconf.h>
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#endif /*KERNEL */
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/* */
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#ifdef KERNEL
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# ifdef DDB
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#define fatal_if_no_DDB()
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# else
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#define fatal_if_no_DDB() panic("panic for historical reasons")
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# endif
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#endif
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typedef unsigned long int physaddr;
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#define KVTOPHYS(x) vtophys(x)
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#define AHB_ECB_MAX 32 /* store up to 32ECBs at any one time */
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/* in aha1742 H/W ( Not MAX ? ) */
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#define ECB_HASH_SIZE 32 /* when we have a physical addr. for */
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/* a ecb and need to find the ecb in */
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/* space, look it up in the hash table */
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#define ECB_HASH_SHIFT 9 /* only hash on multiples of 512 */
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#define ECB_HASH(x) ((((long int)(x))>>ECB_HASH_SHIFT) % ECB_HASH_SIZE)
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#define AHB_NSEG 33 /* number of dma segments supported */
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#define EISA_DEVICE_ID_ADAPTEC_1740 0x04900000
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#define AHB_EISA_IOSIZE 0x100
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#define AHB_EISA_SLOT_OFFSET 0xc00
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/* AHA1740 EISA board control registers (Offset from slot base) */
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#define EBCTRL 0x084
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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 0x0C0
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#define PORTADDR_ENHANCED 0x80
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#define BIOSADDR 0x0C1
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#define INTDEF 0x0C2
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#define SCSIDEF 0x0C3
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#define BUSDEF 0x0C4
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#define RESV0 0x0C5
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#define RESV1 0x0C6
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#define RESV2 0x0C7
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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 0x0D0
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#define MBOXOUT1 0x0D1
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#define MBOXOUT2 0x0D2
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#define MBOXOUT3 0x0D3
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#define ATTN 0x0D4
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#define G2CNTRL 0x0D5
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#define G2INTST 0x0D6
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#define G2STAT 0x0D7
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#define MBOXIN0 0x0D8
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#define MBOXIN1 0x0D9
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#define MBOXIN2 0x0DA
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#define MBOXIN3 0x0DB
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#define G2STAT2 0x0DC
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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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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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struct ecb *nexthash;
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physaddr hashkey; /* physaddr of this struct */
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};
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struct ahb_data {
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int unit;
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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 *ecbhash[ECB_HASH_SIZE];
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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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struct scsi_link sc_link;
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int numecbs;
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};
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static u_int32_t ahb_adapter_info __P((int unit));
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static struct ahb_data *
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ahb_alloc __P((int unit, u_long iobase, int irq));
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static int ahb_attach __P((struct eisa_device *dev));
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static int ahb_bus_attach __P((struct ahb_data *ahb));
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static void ahb_done __P((struct ahb_data *ahb, struct ecb *ecb, int state));
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static void ahb_free __P((struct ahb_data *ahb));
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static void ahb_free_ecb __P((struct ahb_data* ahb, struct ecb *ecb,
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int flags));
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static struct ecb *
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ahb_get_ecb __P((struct ahb_data* ahb, int flags));
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static struct ecb *
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ahb_ecb_phys_kv __P((struct ahb_data *ahb, physaddr ecb_phys));
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static int ahb_init __P((struct ahb_data *ahb));
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static void ahbintr __P((void *arg));
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static char *ahbmatch __P((eisa_id_t type));
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static void ahbminphys __P((struct buf *bp));
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static int ahb_poll __P((struct ahb_data *ahb, int wait));
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#ifdef AHBDEBUG
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static void ahb_print_active_ecb __P((struct ahb_data *ahb));
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static void ahb_print_ecb __P((struct ecb *ecb));
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#endif
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static int ahbprobe __P((void));
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static int ahb_reset __P((u_long port));
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static int32_t ahb_scsi_cmd __P((struct scsi_xfer *xs));
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static void ahb_send_immed __P((struct ahb_data *ahb, int target,
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u_long cmd));
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static void ahb_send_mbox __P((struct ahb_data *ahb, int opcode, int target,
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struct ecb *ecb));
|
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static timeout_t
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ahb_timeout;
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||
|
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static struct ecb *cheat;
|
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|
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static u_long ahb_unit = 0;
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static int ahb_debug = 0;
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SYSCTL_INT(_debug, OID_AUTO, ahb_debug, CTLFLAG_RW, &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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#ifdef KERNEL
|
||
static struct eisa_driver ahb_eisa_driver =
|
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{
|
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"ahb",
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ahbprobe,
|
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ahb_attach,
|
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/*shutdown*/NULL,
|
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&ahb_unit
|
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};
|
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|
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DATA_SET (eisadriver_set, ahb_eisa_driver);
|
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|
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static struct scsi_adapter ahb_switch =
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{
|
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ahb_scsi_cmd,
|
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ahbminphys,
|
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0,
|
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0,
|
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ahb_adapter_info,
|
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"ahb",
|
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{ 0, 0 }
|
||
};
|
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|
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/* the below structure is so we have a default dev struct for our link struct */
|
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static struct scsi_device ahb_dev =
|
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{
|
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NULL, /* Use default error handler */
|
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NULL, /* have a queue, served by this */
|
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NULL, /* have no async handler */
|
||
NULL, /* Use default 'done' routine */
|
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"ahb",
|
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0,
|
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{ 0, 0 }
|
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};
|
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|
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#endif /*KERNEL */
|
||
|
||
#ifndef KERNEL
|
||
main()
|
||
{
|
||
printf("ahb_data size is %d\n", sizeof(struct ahb_data));
|
||
printf("ecb size is %d\n", sizeof(struct ecb));
|
||
}
|
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|
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#else /*KERNEL */
|
||
|
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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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static void
|
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ahb_send_mbox(struct ahb_data* ahb, int opcode, int target, struct ecb *ecb)
|
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{
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int port = ahb->baseport;
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int wait = 300; /* 3ms should be enough */
|
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int stport = port + G2STAT;
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int s = splbio();
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||
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while (--wait) {
|
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if ((inb(stport) & (G2STAT_BUSY | G2STAT_MBOX_EMPTY))
|
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== (G2STAT_MBOX_EMPTY))
|
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break;
|
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DELAY(10);
|
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}
|
||
if (wait == 0) {
|
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printf("ahb%d: board is not responding\n", ahb->unit);
|
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Debugger("aha1742");
|
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fatal_if_no_DDB();
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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);
|
||
}
|
||
|
||
/*
|
||
* Function to poll for command completion when in poll mode
|
||
*/
|
||
static int
|
||
ahb_poll(struct ahb_data *ahb, int wait)
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{ /* in msec */
|
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int port = ahb->baseport;
|
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int stport = port + G2STAT;
|
||
|
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retry:
|
||
while (--wait) {
|
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if (inb(stport) & G2STAT_INT_PEND)
|
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break;
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DELAY(1000);
|
||
} if (wait == 0) {
|
||
printf("ahb%d: board is not responding\n", ahb->unit);
|
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return (EIO);
|
||
}
|
||
if (cheat != ahb_ecb_phys_kv(ahb, inl(port + MBOXIN0))) {
|
||
printf("discarding 0x%lx ", inl(port + MBOXIN0));
|
||
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
|
||
DELAY(50000);
|
||
goto retry;
|
||
}
|
||
/* don't know this will work */
|
||
ahbintr((void *)ahb);
|
||
return (0);
|
||
}
|
||
|
||
/*
|
||
* Function to send an immediate type command to the adapter
|
||
*/
|
||
static void
|
||
ahb_send_immed(struct ahb_data *ahb, int target, u_long cmd)
|
||
{
|
||
int port = ahb->baseport;
|
||
int s = splbio();
|
||
int stport = port + G2STAT;
|
||
int wait = 100; /* 1 ms enough? */
|
||
|
||
while (--wait) {
|
||
if ((inb(stport) & (G2STAT_BUSY | G2STAT_MBOX_EMPTY))
|
||
== (G2STAT_MBOX_EMPTY))
|
||
break;
|
||
DELAY(10);
|
||
} if (wait == 0) {
|
||
printf("ahb%d: board is not responding\n", ahb->unit);
|
||
Debugger("aha1742");
|
||
fatal_if_no_DDB();
|
||
}
|
||
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);
|
||
}
|
||
|
||
static char *
|
||
ahbmatch(type)
|
||
eisa_id_t type;
|
||
{
|
||
switch(type & 0xfffffe00) {
|
||
case EISA_DEVICE_ID_ADAPTEC_1740:
|
||
return ("Adaptec 174x SCSI host adapter");
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
return (NULL);
|
||
}
|
||
|
||
int
|
||
ahbprobe(void)
|
||
{
|
||
u_long iobase;
|
||
char intdef;
|
||
u_long irq;
|
||
struct eisa_device *e_dev = NULL;
|
||
int count;
|
||
|
||
count = 0;
|
||
while ((e_dev = eisa_match_dev(e_dev, ahbmatch))) {
|
||
iobase = (e_dev->ioconf.slot * EISA_SLOT_SIZE) +
|
||
AHB_EISA_SLOT_OFFSET;
|
||
|
||
eisa_add_iospace(e_dev, iobase, AHB_EISA_IOSIZE, RESVADDR_NONE);
|
||
intdef = inb(INTDEF + iobase);
|
||
switch (intdef & 0x7) {
|
||
case INT9:
|
||
irq = 9;
|
||
break;
|
||
case INT10:
|
||
irq = 10;
|
||
break;
|
||
case INT11:
|
||
irq = 11;
|
||
break;
|
||
case INT12:
|
||
irq = 12;
|
||
break;
|
||
case INT14:
|
||
irq = 14;
|
||
break;
|
||
case INT15:
|
||
irq = 15;
|
||
break;
|
||
default:
|
||
printf("aha174X at slot %d: illegal "
|
||
"irq setting %d\n", e_dev->ioconf.slot,
|
||
(intdef & 0x7));
|
||
continue;
|
||
}
|
||
eisa_add_intr(e_dev, irq);
|
||
eisa_registerdev(e_dev, &ahb_eisa_driver);
|
||
count++;
|
||
}
|
||
return count;
|
||
}
|
||
|
||
static struct ahb_data *
|
||
ahb_alloc(unit, iobase, irq)
|
||
int unit;
|
||
u_long iobase;
|
||
int irq;
|
||
{
|
||
struct ahb_data *ahb;
|
||
|
||
/*
|
||
* Allocate a storage area for us
|
||
*/
|
||
ahb = malloc(sizeof(struct ahb_data), M_TEMP, M_NOWAIT);
|
||
if (!ahb) {
|
||
printf("ahb%d: cannot malloc!\n", unit);
|
||
return NULL;
|
||
}
|
||
bzero(ahb, sizeof(struct ahb_data));
|
||
ahb->unit = unit;
|
||
ahb->baseport = iobase;
|
||
ahb->vect = irq;
|
||
|
||
return(ahb);
|
||
}
|
||
|
||
static void
|
||
ahb_free(ahb)
|
||
struct ahb_data *ahb;
|
||
{
|
||
free(ahb, M_DEVBUF);
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* reset board, If it doesn't respond, return failure
|
||
*/
|
||
static int
|
||
ahb_reset(port)
|
||
u_long port;
|
||
{
|
||
u_char i;
|
||
int wait = 1000; /* 1 sec enough? */
|
||
int stport = port + G2STAT;
|
||
|
||
outb(port + EBCTRL, CDEN); /* enable full card */
|
||
outb(port + PORTADDR, PORTADDR_ENHANCED);
|
||
|
||
outb(port + G2CNTRL, G2CNTRL_HARD_RESET);
|
||
DELAY(1000);
|
||
outb(port + G2CNTRL, 0);
|
||
DELAY(10000);
|
||
while (--wait) {
|
||
if ((inb(stport) & G2STAT_BUSY) == 0)
|
||
break;
|
||
DELAY(1000);
|
||
} if (wait == 0) {
|
||
printf("ahb_reset: No answer from aha1742 board\n");
|
||
return (0);
|
||
}
|
||
i = inb(port + MBOXIN0) & 0xff;
|
||
if (i) {
|
||
printf("ahb_reset: self test failed, val = 0x%x\n", i);
|
||
return (0);
|
||
}
|
||
while (inb(stport) & G2STAT_INT_PEND) {
|
||
printf(".");
|
||
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
|
||
DELAY(10000);
|
||
}
|
||
outb(port + EBCTRL, CDEN); /* enable full card */
|
||
outb(port + PORTADDR, PORTADDR_ENHANCED);
|
||
return (1);
|
||
}
|
||
|
||
/*
|
||
* Attach ourselves and the devices on our bus
|
||
*/
|
||
static int
|
||
ahb_attach(e_dev)
|
||
struct eisa_device *e_dev;
|
||
{
|
||
/*
|
||
* find unit and check we have that many defined
|
||
*/
|
||
int unit = e_dev->unit;
|
||
struct ahb_data *ahb;
|
||
resvaddr_t *iospace;
|
||
int irq = ffs(e_dev->ioconf.irq) - 1;
|
||
|
||
iospace = e_dev->ioconf.ioaddrs.lh_first;
|
||
|
||
if(!iospace)
|
||
return -1;
|
||
|
||
if(!(ahb_reset(iospace->addr)))
|
||
return -1;
|
||
|
||
eisa_reg_start(e_dev);
|
||
if(eisa_reg_iospace(e_dev, iospace)) {
|
||
eisa_reg_end(e_dev);
|
||
return -1;
|
||
}
|
||
|
||
if(!(ahb = ahb_alloc(unit, iospace->addr, irq))) {
|
||
ahb_free(ahb);
|
||
eisa_reg_end(e_dev);
|
||
return -1;
|
||
}
|
||
|
||
if(eisa_reg_intr(e_dev, irq, ahbintr, (void *)ahb, &bio_imask,
|
||
/*shared ==*/TRUE)) {
|
||
ahb_free(ahb);
|
||
eisa_reg_end(e_dev);
|
||
return -1;
|
||
}
|
||
eisa_reg_end(e_dev);
|
||
|
||
/*
|
||
* Now that we know we own the resources we need, do the full
|
||
* card initialization.
|
||
*/
|
||
if(ahb_init(ahb)){
|
||
ahb_free(ahb);
|
||
/*
|
||
* The board's IRQ line will not be left enabled
|
||
* if we can't intialize correctly, so its safe
|
||
* to release the irq.
|
||
*/
|
||
eisa_release_intr(e_dev, irq, ahbintr);
|
||
return -1;
|
||
}
|
||
|
||
/* Attach sub-devices - always succeeds */
|
||
ahb_bus_attach(ahb);
|
||
|
||
return(eisa_enable_intr(e_dev, irq));
|
||
}
|
||
|
||
|
||
/*
|
||
* Attach all the sub-devices we can find
|
||
*/
|
||
static int
|
||
ahb_bus_attach(ahb)
|
||
struct ahb_data *ahb;
|
||
{
|
||
struct scsibus_data *scbus;
|
||
|
||
/*
|
||
* fill in the prototype scsi_link.
|
||
*/
|
||
ahb->sc_link.adapter_unit = ahb->unit;
|
||
ahb->sc_link.adapter_targ = ahb->our_id;
|
||
ahb->sc_link.adapter_softc = ahb;
|
||
ahb->sc_link.adapter = &ahb_switch;
|
||
ahb->sc_link.device = &ahb_dev;
|
||
|
||
/*
|
||
* Prepare the scsibus_data area for the upperlevel
|
||
* scsi code.
|
||
*/
|
||
scbus = scsi_alloc_bus();
|
||
if(!scbus)
|
||
return 0;
|
||
scbus->adapter_link = &ahb->sc_link;
|
||
|
||
/*
|
||
* ask the adapter what subunits are present
|
||
*/
|
||
scsi_attachdevs(scbus);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/*
|
||
* Return some information to the caller about
|
||
* the adapter and it's capabilities
|
||
*/
|
||
static u_int32_t
|
||
ahb_adapter_info(unit)
|
||
int unit;
|
||
{
|
||
return (2); /* 2 outstanding requests at a time per device */
|
||
}
|
||
|
||
/*
|
||
* Catch an interrupt from the adaptor
|
||
*/
|
||
static void
|
||
ahbintr(arg)
|
||
void *arg;
|
||
{
|
||
struct ahb_data *ahb;
|
||
struct ecb *ecb;
|
||
unsigned char stat;
|
||
u_char ahbstat;
|
||
int target;
|
||
long int mboxval;
|
||
int port;
|
||
|
||
ahb = (struct ahb_data *)arg;
|
||
port = ahb->baseport;
|
||
|
||
#ifdef AHBDEBUG
|
||
printf("ahbintr ");
|
||
#endif /*AHBDEBUG */
|
||
|
||
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
|
||
printf("status = 0x%x ", stat);
|
||
#endif /*AHBDEBUG */
|
||
/*
|
||
* Process the completed operation
|
||
*/
|
||
|
||
if (stat == AHB_ECB_OK) { /* common case is fast */
|
||
ecb = ahb_ecb_phys_kv(ahb, mboxval);
|
||
} else {
|
||
switch (stat) {
|
||
case AHB_IMMED_OK:
|
||
ecb = ahb->immed_ecb;
|
||
ahb->immed_ecb = 0;
|
||
break;
|
||
case AHB_IMMED_ERR:
|
||
ecb = ahb->immed_ecb;
|
||
ecb->flags |= ECB_IMMED_FAIL;
|
||
ahb->immed_ecb = 0;
|
||
break;
|
||
case AHB_ASN: /* for target mode */
|
||
printf("ahb%d: "
|
||
"Unexpected ASN interrupt(0x%lx)\n",
|
||
ahb->unit, mboxval);
|
||
ecb = 0;
|
||
break;
|
||
case AHB_HW_ERR:
|
||
printf("ahb%d: "
|
||
"Hardware error interrupt(0x%lx)\n",
|
||
ahb->unit, mboxval);
|
||
ecb = 0;
|
||
break;
|
||
case AHB_ECB_RECOVERED:
|
||
ecb = ahb_ecb_phys_kv(ahb, mboxval);
|
||
break;
|
||
case AHB_ECB_ERR:
|
||
ecb = ahb_ecb_phys_kv(ahb, mboxval);
|
||
break;
|
||
default:
|
||
printf(" Unknown return from ahb%d(%x)\n",
|
||
ahb->unit, ahbstat);
|
||
ecb = 0;
|
||
}
|
||
} if (ecb) {
|
||
#ifdef AHBDEBUG
|
||
if (ahb_debug & AHB_SHOWCMDS) {
|
||
show_scsi_cmd(ecb->xs);
|
||
}
|
||
if ((ahb_debug & AHB_SHOWECBS) && ecb)
|
||
printf("<int ecb(%x)>", ecb);
|
||
#endif /*AHBDEBUG */
|
||
untimeout(ahb_timeout, (caddr_t)ecb);
|
||
ahb_done(ahb, ecb, ((stat == AHB_ECB_OK) ? SUCCESS : FAIL));
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* We have a ecb which has been processed by the
|
||
* adaptor, now we look to see how the operation
|
||
* went.
|
||
*/
|
||
static void
|
||
ahb_done(ahb, ecb, state)
|
||
struct ahb_data *ahb;
|
||
int state;
|
||
struct ecb *ecb;
|
||
{
|
||
struct ahb_ecb_status *stat = &ecb->ecb_status;
|
||
struct scsi_sense_data *s1, *s2;
|
||
struct scsi_xfer *xs = ecb->xs;
|
||
|
||
SC_DEBUG(xs->sc_link, SDEV_DB2, ("ahb_done\n"));
|
||
/*
|
||
* 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(ahb, ecb, xs->flags);
|
||
scsi_done(xs);
|
||
}
|
||
|
||
/*
|
||
* A ecb (and hence a mbx-out is put onto the
|
||
* free list.
|
||
*/
|
||
static void
|
||
ahb_free_ecb(ahb, ecb, flags)
|
||
struct ahb_data *ahb;
|
||
int flags;
|
||
struct ecb *ecb;
|
||
{
|
||
unsigned int opri = 0;
|
||
|
||
if (!(flags & SCSI_NOMASK))
|
||
opri = splbio();
|
||
|
||
ecb->next = ahb->free_ecb;
|
||
ahb->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->free_ecb);
|
||
}
|
||
if (!(flags & SCSI_NOMASK))
|
||
splx(opri);
|
||
}
|
||
|
||
/*
|
||
* Get a free ecb
|
||
* If there are none, see if we can allocate a
|
||
* new one. If so, put it in the hash table too
|
||
* otherwise either return an error or sleep
|
||
*/
|
||
static struct ecb *
|
||
ahb_get_ecb(ahb, flags)
|
||
struct ahb_data *ahb;
|
||
int flags;
|
||
{
|
||
unsigned opri = 0;
|
||
struct ecb *ecbp;
|
||
int hashnum;
|
||
|
||
opri = splbio();
|
||
/*
|
||
* If we can and have to, sleep waiting for one to come free
|
||
* but only if we can't allocate a new one.
|
||
*/
|
||
while (!(ecbp = ahb->free_ecb)) {
|
||
if (ahb->numecbs < AHB_ECB_MAX) {
|
||
ecbp = (struct ecb *) malloc(sizeof(struct ecb),
|
||
M_TEMP,
|
||
M_NOWAIT);
|
||
if (ecbp) {
|
||
bzero(ecbp, sizeof(struct ecb));
|
||
ahb->numecbs++;
|
||
ecbp->flags = ECB_ACTIVE;
|
||
/*
|
||
* put in the phystokv hash table
|
||
* Never gets taken out.
|
||
*/
|
||
ecbp->hashkey = KVTOPHYS(ecbp);
|
||
hashnum = ECB_HASH(ecbp->hashkey);
|
||
ecbp->nexthash = ahb->ecbhash[hashnum];
|
||
ahb->ecbhash[hashnum] = ecbp;
|
||
} else {
|
||
printf("ahb%d: Can't malloc ECB\n", ahb->unit);
|
||
}
|
||
break;
|
||
} else {
|
||
if (!(flags & SCSI_NOSLEEP)) {
|
||
tsleep((caddr_t)&ahb->free_ecb, PRIBIO,
|
||
"ahbecb", 0);
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
if (ecbp) {
|
||
/* Get ECB from from free list */
|
||
ahb->free_ecb = ecbp->next;
|
||
ecbp->flags = ECB_ACTIVE;
|
||
}
|
||
|
||
splx(opri);
|
||
|
||
return (ecbp);
|
||
}
|
||
|
||
/*
|
||
* given a physical address, find the ecb that
|
||
* it corresponds to:
|
||
*/
|
||
static struct ecb *
|
||
ahb_ecb_phys_kv(ahb, ecb_phys)
|
||
struct ahb_data *ahb;
|
||
physaddr ecb_phys;
|
||
{
|
||
int hashnum = ECB_HASH(ecb_phys);
|
||
struct ecb *ecbp = ahb->ecbhash[hashnum];
|
||
|
||
while (ecbp) {
|
||
if (ecbp->hashkey == ecb_phys)
|
||
break;
|
||
ecbp = ecbp->nexthash;
|
||
}
|
||
return ecbp;
|
||
}
|
||
|
||
/*
|
||
* Start the board, ready for normal operation
|
||
*/
|
||
static int
|
||
ahb_init(ahb)
|
||
struct ahb_data *ahb;
|
||
{
|
||
u_char intdef;
|
||
int port = ahb->baseport;
|
||
|
||
/*
|
||
* Assume we have a board at this stage
|
||
* setup dma channel from jumpers and save int
|
||
* level
|
||
*/
|
||
intdef = inb(port + INTDEF);
|
||
outb(port + INTDEF, (intdef | INTEN)); /* make sure we can interrupt */
|
||
|
||
/* who are we on the scsi bus? */
|
||
ahb->our_id = (inb(port + SCSIDEF) & HSCSIID);
|
||
|
||
/*
|
||
* Note that we are going and return (to probe)
|
||
*/
|
||
ahb->flags |= AHB_INIT;
|
||
return (0);
|
||
}
|
||
|
||
#ifndef min
|
||
#define min(x,y) (x < y ? x : y)
|
||
#endif /* min */
|
||
|
||
static void
|
||
ahbminphys(bp)
|
||
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
|
||
*/
|
||
static int32_t
|
||
ahb_scsi_cmd(xs)
|
||
struct scsi_xfer *xs;
|
||
{
|
||
struct ecb *ecb;
|
||
struct ahb_dma_seg *sg;
|
||
int seg; /* scatter gather seg being worked on */
|
||
int thiskv;
|
||
physaddr thisphys, nextphys;
|
||
int bytes_this_seg, bytes_this_page, datalen, flags;
|
||
struct ahb_data *ahb;
|
||
int s;
|
||
|
||
ahb = (struct ahb_data *)xs->sc_link->adapter_softc;
|
||
SC_DEBUG(xs->sc_link, SDEV_DB2, ("ahb_scsi_cmd\n"));
|
||
/*
|
||
* 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?", ahb->unit);
|
||
xs->flags &= ~ITSDONE;
|
||
}
|
||
if (!(flags & INUSE)) {
|
||
printf("ahb%d: Not in use?", ahb->unit);
|
||
xs->flags |= INUSE;
|
||
}
|
||
if (!(ecb = ahb_get_ecb(ahb, flags))) {
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
return (TRY_AGAIN_LATER);
|
||
}
|
||
cheat = ecb;
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("start ecb(%p)\n", ecb));
|
||
ecb->xs = xs;
|
||
/*
|
||
* If it's a reset, we need to do an 'immediate'
|
||
* command, and store it's ecb for later
|
||
* if there is already an immediate waiting,
|
||
* then WE must wait
|
||
*/
|
||
if (flags & SCSI_RESET) {
|
||
ecb->flags |= ECB_IMMED;
|
||
if (ahb->immed_ecb) {
|
||
return (TRY_AGAIN_LATER);
|
||
}
|
||
ahb->immed_ecb = ecb;
|
||
if (!(flags & SCSI_NOMASK)) {
|
||
s = splbio();
|
||
ahb_send_immed(ahb, xs->sc_link->target, AHB_TARG_RESET);
|
||
timeout(ahb_timeout, (caddr_t)ecb, (xs->timeout * hz) / 1000);
|
||
splx(s);
|
||
return (SUCCESSFULLY_QUEUED);
|
||
} else {
|
||
ahb_send_immed(ahb, xs->sc_link->target, AHB_TARG_RESET);
|
||
/*
|
||
* If we can't use interrupts, poll on completion
|
||
*/
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("wait\n"));
|
||
if (ahb_poll(ahb, xs->timeout)) {
|
||
ahb_free_ecb(ahb, 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->sc_link->lun | 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;
|
||
#ifdef TFS
|
||
if (flags & SCSI_DATA_UIO) {
|
||
iovp = ((struct uio *) xs->data)->uio_iov;
|
||
datalen = ((struct uio *) xs->data)->uio_iovcnt;
|
||
xs->datalen = 0;
|
||
while ((datalen) && (seg < AHB_NSEG)) {
|
||
sg->addr = (physaddr) iovp->iov_base;
|
||
xs->datalen += sg->len = iovp->iov_len;
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
||
("(0x%x@0x%x)", iovp->iov_len
|
||
,iovp->iov_base));
|
||
sg++;
|
||
iovp++;
|
||
seg++;
|
||
datalen--;
|
||
}
|
||
}
|
||
else
|
||
#endif /*TFS */
|
||
{
|
||
/*
|
||
* Set up the scatter gather block
|
||
*/
|
||
|
||
SC_DEBUG(xs->sc_link, SDEV_DB4,
|
||
("%ld @%p:- ", 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;
|
||
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("0x%lx",
|
||
thisphys));
|
||
|
||
/* do it at least once */
|
||
nextphys = thisphys;
|
||
while ((datalen) && (thisphys == nextphys)) {
|
||
/*
|
||
* This page is contiguous (physically) with
|
||
* the the last, just extend the length
|
||
*/
|
||
/* how far to the end of the page */
|
||
nextphys = (thisphys & (~(PAGESIZ - 1)))
|
||
+ PAGESIZ;
|
||
bytes_this_page = nextphys - thisphys;
|
||
/**** or the data ****/
|
||
bytes_this_page = min(bytes_this_page
|
||
,datalen);
|
||
bytes_this_seg += bytes_this_page;
|
||
datalen -= bytes_this_page;
|
||
|
||
/* get more ready for the next page */
|
||
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
||
+ PAGESIZ;
|
||
if (datalen)
|
||
thisphys = KVTOPHYS(thiskv);
|
||
}
|
||
/*
|
||
* next page isn't contiguous, finish the seg
|
||
*/
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
||
("(0x%x)", bytes_this_seg));
|
||
sg->len = bytes_this_seg;
|
||
sg++;
|
||
seg++;
|
||
}
|
||
} /*end of iov/kv decision */
|
||
ecb->datalen = seg * sizeof(struct ahb_dma_seg);
|
||
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
|
||
if (datalen) { /* there's still data, must have run out of segs! */
|
||
printf("ahb_scsi_cmd%d: more than %d DMA segs\n",
|
||
ahb->unit, AHB_NSEG);
|
||
xs->error = XS_DRIVER_STUFFUP;
|
||
ahb_free_ecb(ahb, 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(ahb, OP_START_ECB, xs->sc_link->target, ecb);
|
||
timeout(ahb_timeout, (caddr_t)ecb, (xs->timeout * hz) / 1000);
|
||
splx(s);
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n"));
|
||
return (SUCCESSFULLY_QUEUED);
|
||
}
|
||
/*
|
||
* If we can't use interrupts, poll on completion
|
||
*/
|
||
ahb_send_mbox(ahb, OP_START_ECB, xs->sc_link->target, ecb);
|
||
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_wait\n"));
|
||
do {
|
||
if (ahb_poll(ahb, xs->timeout)) {
|
||
if (!(xs->flags & SCSI_SILENT))
|
||
printf("cmd fail\n");
|
||
ahb_send_mbox(ahb, OP_ABORT_ECB, xs->sc_link->target, ecb);
|
||
if (ahb_poll(ahb, 2000)) {
|
||
printf("abort failed in wait\n");
|
||
ahb_free_ecb(ahb, 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);
|
||
}
|
||
|
||
static void
|
||
ahb_timeout(void *arg1)
|
||
{
|
||
struct ecb * ecb = (struct ecb *)arg1;
|
||
struct ahb_data *ahb;
|
||
int s = splbio();
|
||
|
||
ahb = ecb->xs->sc_link->adapter_softc;
|
||
printf("ahb%d:%d:%d (%s%d) timed out ", ahb->unit
|
||
,ecb->xs->sc_link->target
|
||
,ecb->xs->sc_link->lun
|
||
,ecb->xs->sc_link->device->name
|
||
,ecb->xs->sc_link->dev_unit);
|
||
|
||
#ifdef AHBDEBUG
|
||
if (ahb_debug & AHB_SHOWECBS)
|
||
ahb_print_active_ecb(ahb);
|
||
#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(ahb, 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(ahb, ecb, FAIL);
|
||
} else { /* abort the operation that has timed out */
|
||
printf("\n");
|
||
ahb_send_mbox(ahb, OP_ABORT_ECB, ecb->xs->sc_link->target, ecb);
|
||
/* 2 secs for the abort */
|
||
timeout(ahb_timeout, (caddr_t)ecb, 2 * hz);
|
||
ecb->flags = ECB_ABORTED;
|
||
}
|
||
splx(s);
|
||
}
|
||
|
||
#ifdef AHBDEBUG
|
||
static void
|
||
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);
|
||
show_scsi_cmd(ecb->xs);
|
||
}
|
||
|
||
static void
|
||
ahb_print_active_ecb(ahb)
|
||
struct ahb_data *ahb;
|
||
{
|
||
struct ecb *ecb;
|
||
int i = 0;
|
||
|
||
while (i < ECB_HASH_SIZE) {
|
||
ecb = ahb->ecbhash[i];
|
||
while (ecb) {
|
||
if (ecb->flags != ECB_FREE) {
|
||
ahb_print_ecb(ecb);
|
||
}
|
||
ecb = ecb->nexthash;
|
||
} i++;
|
||
}
|
||
}
|
||
#endif /*AHBDEBUG */
|
||
#endif /*KERNEL */
|