6073486300
misplaced extern declarations (mostly prototypes of interrupt handlers) that this exposed. The prototypes should be moved back to the driver sources when the functions are staticalized. Added idempotency guards to <machine/conf.h>. "ioconf.h" can't be included when building LKMs so define a wart in bsd.kmod.mk to help guard against including it.
1753 lines
42 KiB
C
1753 lines
42 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: bt742a.c,v 1.42 1995/10/28 15:38:47 phk Exp $
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*/
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/*
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* Bulogic/Bustek 32 bit Addressing Mode SCSI driver.
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*
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* NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode.
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* 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version
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* has broken busmaster for handling 32 bit addressing on H/W bus
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* side.
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*
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* 3. Extended probing still needs confirmation from our user base, due
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* to several H/W and firmware dependencies. If you have a problem
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* with extended probing, please contact 'amurai@spec.co.jp'
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*
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* amurai@spec.co.jp 94/6/16
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*/
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/*
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* bt742a SCSI driver
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*/
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#include <sys/types.h>
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#ifdef KERNEL /* don't laugh.. it compiles to a program too.. look */
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#include "bt.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#endif /* KERNEL */
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#include <machine/clock.h>
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#include <i386/isa/isa_device.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <sys/devconf.h>
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#ifdef KERNEL
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#include <sys/kernel.h>
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#else /*KERNEL */
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#define NBT 1
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#endif /*KERNEL */
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typedef unsigned long int physaddr;
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/*
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* I/O Port Interface
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*/
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#define BT_BASE bt->bt_base
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#define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */
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#define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */
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#define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */
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/*
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* BT_CTRL_STAT bits (write)
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*/
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#define BT_HRST 0x80 /* Hardware reset */
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#define BT_SRST 0x40 /* Software reset */
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#define BT_IRST 0x20 /* Interrupt reset */
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#define BT_SCRST 0x10 /* SCSI bus reset */
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/*
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* BT_CTRL_STAT bits (read)
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*/
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#define BT_STST 0x80 /* Self test in Progress */
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#define BT_DIAGF 0x40 /* Diagnostic Failure */
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#define BT_INIT 0x20 /* Mbx Init required */
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#define BT_IDLE 0x10 /* Host Adapter Idle */
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#define BT_CDF 0x08 /* cmd/data out port full */
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#define BT_DF 0x04 /* Data in port full */
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#define BT_INVDCMD 0x01 /* Invalid command */
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/*
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* BT_CMD_DATA bits (write)
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*/
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#define BT_NOP 0x00 /* No operation */
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#define BT_MBX_INIT 0x01 /* Mbx initialization */
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#define BT_START_SCSI 0x02 /* start scsi command */
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#define BT_START_BIOS 0x03 /* start bios command */
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#define BT_INQUIRE 0x04 /* Adapter Inquiry */
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#define BT_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */
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#define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */
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#define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */
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#define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */
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#define BT_SPEED_SET 0x09 /* set transfer speed */
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#define BT_DEV_GET 0x0a /* return installed devices */
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#define BT_CONF_GET 0x0b /* return configuration data */
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#define BT_TARGET_EN 0x0c /* enable target mode */
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#define BT_SETUP_GET 0x0d /* return setup data */
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#define BT_WRITE_CH2 0x1a /* write channel 2 buffer */
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#define BT_READ_CH2 0x1b /* read channel 2 buffer */
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#define BT_WRITE_FIFO 0x1c /* write fifo buffer */
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#define BT_READ_FIFO 0x1d /* read fifo buffer */
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#define BT_ECHO 0x1e /* Echo command data */
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#define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */
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#define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */
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/* The following command appeared at FirmWare 3.31 */
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#define BT_ROUND_ROBIN 0x8f /* Enable/Disable(default) round robin */
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#define BT_STRICT_ROUND_ROBIN 0x00 /* Parameter value for strict mode */
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#define BT_AGRES_ROUND_ROBIN 0x01 /* Parameter value for backword comp */
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struct bt_cmd_buf {
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u_char byte[16];
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};
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/*
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* BT_INTR_PORT bits (read)
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*/
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#define BT_ANY_INTR 0x80 /* Any interrupt */
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#define BT_SCRD 0x08 /* SCSI reset detected */
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#define BT_HACC 0x04 /* Command complete */
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#define BT_MBOA 0x02 /* MBX out empty */
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#define BT_MBIF 0x01 /* MBX in full */
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/*
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* Mail box defs etc.
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* these could be bigger but we need the bt_data to fit on a single page..
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*/
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#define BT_MBX_SIZE 32 /* mail box size (MAX 255 MBxs) */
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/* don't need that many really */
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#define BT_CCB_MAX 32 /* store up to 32CCBs at any one time */
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/* in bt742a H/W ( Not MAX ? ) */
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#define CCB_HASH_SIZE 32 /* when we have a physical addr. for */
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/* a ccb and need to find the ccb in */
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/* space, look it up in the hash table */
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#define CCB_HASH_SHIFT 9 /* only hash on multiples of 512 */
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#define CCB_HASH(x) ((((long int)(x))>>CCB_HASH_SHIFT) % CCB_HASH_SIZE)
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#define bt_nextmbx( wmb, mbx, mbio ) \
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if ( (wmb) == &((mbx)->mbio[BT_MBX_SIZE - 1 ]) ) \
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(wmb) = &((mbx)->mbio[0]); \
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else \
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(wmb)++;
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typedef struct bt_mbx_out {
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physaddr ccb_addr;
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unsigned char dummy[3];
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unsigned char cmd;
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} BT_MBO;
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typedef struct bt_mbx_in {
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physaddr ccb_addr;
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unsigned char btstat;
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unsigned char sdstat;
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unsigned char dummy;
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unsigned char stat;
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} BT_MBI;
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struct bt_mbx {
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BT_MBO mbo[BT_MBX_SIZE];
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BT_MBI mbi[BT_MBX_SIZE];
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BT_MBO *tmbo; /* Target Mail Box out */
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BT_MBI *tmbi; /* Target Mail Box in */
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};
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/*
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* mbo.cmd values
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*/
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#define BT_MBO_FREE 0x0 /* MBO entry is free */
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#define BT_MBO_START 0x1 /* MBO activate entry */
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#define BT_MBO_ABORT 0x2 /* MBO abort entry */
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/*
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* mbi.stat values
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*/
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#define BT_MBI_FREE 0x0 /* MBI entry is free */
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#define BT_MBI_OK 0x1 /* completed without error */
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#define BT_MBI_ABORT 0x2 /* aborted ccb */
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#define BT_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */
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#define BT_MBI_ERROR 0x4 /* Completed with error */
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#if defined(BIG_DMA)
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WARNING...THIS WON'T WORK(won't fit on 1 page)
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/* #define BT_NSEG 2048*/ /* Number of scatter gather segments - to much vm */
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#define BT_NSEG 128
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#else
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#define BT_NSEG 33
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#endif /* BIG_DMA */
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struct bt_scat_gath {
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unsigned long seg_len;
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physaddr seg_addr;
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};
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struct bt_ccb {
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unsigned char opcode;
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unsigned char:3, data_in:1, data_out:1,:3;
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unsigned char scsi_cmd_length;
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unsigned char req_sense_length;
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/*------------------------------------longword boundary */
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unsigned long data_length;
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/*------------------------------------longword boundary */
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physaddr data_addr;
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/*------------------------------------longword boundary */
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unsigned char dummy[2];
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unsigned char host_stat;
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unsigned char target_stat;
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/*------------------------------------longword boundary */
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unsigned char target;
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unsigned char lun;
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unsigned char scsi_cmd[12]; /* 12 bytes (bytes only) */
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unsigned char dummy2[1];
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unsigned char link_id;
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/*------------------------------------4 longword boundary */
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physaddr link_addr;
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/*------------------------------------longword boundary */
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physaddr sense_ptr;
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/*-----end of HW fields-------------------------------longword boundary */
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struct scsi_sense_data scsi_sense;
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/*------------------------------------longword boundary */
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struct bt_scat_gath scat_gath[BT_NSEG];
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/*------------------------------------longword boundary */
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struct bt_ccb *next;
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/*------------------------------------longword boundary */
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struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */
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/*------------------------------------longword boundary */
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struct bt_mbx_out *mbx; /* pointer to mail box */
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/*------------------------------------longword boundary */
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int flags;
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#define CCB_FREE 0
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#define CCB_ACTIVE 1
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#define CCB_ABORTED 2
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/*------------------------------------longword boundary */
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struct bt_ccb *nexthash; /* if two hash the same */
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|
/*------------------------------------longword boundary */
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physaddr hashkey; /*physaddr of this ccb */
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/*------------------------------------longword boundary */
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};
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/*
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* opcode fields
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*/
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#define BT_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */
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#define BT_TARGET_CCB 0x01 /* SCSI Target CCB */
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#define BT_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather */
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#define BT_RESET_CCB 0x81 /* SCSI Bus reset */
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/*
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* bt_ccb.host_stat values
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*/
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#define BT_OK 0x00 /* cmd ok */
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#define BT_LINK_OK 0x0a /* Link cmd ok */
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#define BT_LINK_IT 0x0b /* Link cmd ok + int */
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#define BT_SEL_TIMEOUT 0x11 /* Selection time out */
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#define BT_OVER_UNDER 0x12 /* Data over/under run */
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#define BT_BUS_FREE 0x13 /* Bus dropped at unexpected time */
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#define BT_INV_BUS 0x14 /* Invalid bus phase/sequence */
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#define BT_BAD_MBO 0x15 /* Incorrect MBO cmd */
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#define BT_BAD_CCB 0x16 /* Incorrect ccb opcode */
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#define BT_BAD_LINK 0x17 /* Not same values of LUN for links */
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#define BT_INV_TARGET 0x18 /* Invalid target direction */
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#define BT_CCB_DUP 0x19 /* Duplicate CCB received */
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#define BT_INV_CCB 0x1a /* Invalid CCB or segment list */
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#define BT_ABORTED 42 /* pseudo value from driver */
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struct bt_boardID {
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u_char board_type;
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u_char custom_feture;
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char firm_revision;
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u_char firm_version;
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};
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struct bt_setup {
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u_char sync_neg:1;
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u_char parity:1;
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u_char :6;
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u_char speed;
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u_char bus_on;
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u_char bus_off;
|
|
u_char num_mbx;
|
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u_char mbx[3]; /* for backwards compatibility */
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struct {
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u_char offset:4;
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u_char period:3;
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u_char valid:1;
|
|
} sync[8];
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|
u_char disc_sts;
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|
};
|
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|
|
struct bt_config {
|
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u_char chan;
|
|
u_char intr;
|
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u_char scsi_dev:3;
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u_char :5;
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};
|
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|
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#define BT_INQUIRE_REV_THIRD 0x84 /* Get Adapter FirmWare version #3 */
|
|
#define BT_INQUIRE_REV_FOURTH 0x85 /* Get Adapter FirmWare version #4 */
|
|
|
|
/*
|
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* Determine 32bit address/Data firmware functionality from the bus type
|
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* Note: bt742a/747[s|d]/757/946/445s will return 'E'
|
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* bt542b/545s/545d will return 'A'
|
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* 94/05/18 amurai@spec.co.jp
|
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*/
|
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#define BT_BUS_TYPE_24bit 'A' /* PC/AT 24 bit address bus type */
|
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#define BT_BUS_TYPE_32bit 'E' /* EISA/VLB/PCI 32 bit address bus type */
|
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#define BT_BUS_TYPE_MCA 'M' /* Micro chanel is ? forget it right now */
|
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struct bt_ext_info {
|
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u_char bus_type; /* Host adapter bus type */
|
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u_char bios_addr; /* Bios Address-Not used */
|
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u_short max_seg; /* Max segment List */
|
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u_char num_mbx; /* Number of mailbox */
|
|
int32 mbx_base; /* mailbox base address */
|
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struct {
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u_char resv1:1; /* ??? */
|
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u_char force:1; /* ON: force sync */
|
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u_char maxsync:1; /* ON: 10MB/s , OFF: 5MB/s */
|
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u_char resv2:2; /* ??? */
|
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u_char sync:1; /* ON: Sync, OFF: async ONLY!! */
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u_char resv3:2; /* ??? */
|
|
} s;
|
|
u_char firmid[3]; /* Firmware ver. & rev. w/o last char */
|
|
};
|
|
|
|
#define BT_GET_BOARD_INFO 0x8b /* Get H/W ID and Revision */
|
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struct bt_board_info {
|
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u_char id[4]; /* i.e bt742a -> '7','4','2','A' */
|
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u_char ver[2]; /* i.e Board Revision 'H' -> 'H', 0x00 */
|
|
};
|
|
|
|
#define BT_GET_SYNC_VALUE 0x8c /* Get Synchronous Value */
|
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struct bt_sync_value {
|
|
u_char value[8]; /* Synchrnous value (value * 10 nsec) */
|
|
};
|
|
|
|
#define INT9 0x01
|
|
#define INT10 0x02
|
|
#define INT11 0x04
|
|
#define INT12 0x08
|
|
#define INT14 0x20
|
|
#define INT15 0x40
|
|
|
|
#define EISADMA 0x00
|
|
#define CHAN0 0x01
|
|
#define CHAN5 0x20
|
|
#define CHAN6 0x40
|
|
#define CHAN7 0x80
|
|
|
|
#define KVTOPHYS(x) vtophys(x)
|
|
#define PAGESIZ 4096
|
|
#define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); }
|
|
|
|
struct bt_data {
|
|
short bt_base; /* base port for each board */
|
|
struct bt_mbx bt_mbx; /* all our mailboxes */
|
|
struct bt_ccb *bt_ccb_free; /* list of free CCBs */
|
|
struct bt_ccb *ccbhash[CCB_HASH_SIZE]; /* phys to kv hash */
|
|
int bt_int; /* int. read off board */
|
|
int bt_dma; /* DMA channel read of board */
|
|
int bt_scsi_dev; /* adapters scsi id */
|
|
int numccbs; /* how many we have malloc'd */
|
|
struct scsi_link sc_link; /* prototype for devs */
|
|
} *btdata[NBT];
|
|
|
|
/***********debug values *************/
|
|
#define BT_SHOWCCBS 0x01
|
|
#define BT_SHOWINTS 0x02
|
|
#define BT_SHOWCMDS 0x04
|
|
#define BT_SHOWMISC 0x08
|
|
static int bt_debug = 0;
|
|
|
|
#ifdef KERNEL
|
|
static int btprobe();
|
|
static int btattach();
|
|
static int32 bt_scsi_cmd();
|
|
static int bt_poll __P((int unit, struct scsi_xfer *xs, struct bt_ccb *ccb));
|
|
static void bt_timeout(void *);
|
|
static int bt_init __P((int unit));
|
|
static void bt_inquire_setup_information();
|
|
static void bt_done();
|
|
static void btminphys();
|
|
static u_int32 bt_adapter_info();
|
|
static struct bt_ccb *bt_get_ccb();
|
|
static struct bt_ccb *bt_ccb_phys_kv();
|
|
|
|
static int btunit = 0;
|
|
static int btprobing = 0;
|
|
|
|
struct isa_driver btdriver =
|
|
{
|
|
btprobe,
|
|
btattach,
|
|
"bt"
|
|
};
|
|
|
|
static struct scsi_adapter bt_switch =
|
|
{
|
|
bt_scsi_cmd,
|
|
btminphys,
|
|
0,
|
|
0,
|
|
bt_adapter_info,
|
|
"bt",
|
|
{ 0, 0 }
|
|
};
|
|
|
|
/* the below structure is so we have a default dev struct for out link struct */
|
|
static struct scsi_device bt_dev =
|
|
{
|
|
NULL, /* Use default error handler */
|
|
NULL, /* have a queue, served by this */
|
|
NULL, /* have no async handler */
|
|
NULL, /* Use default 'done' routine */
|
|
"bt",
|
|
0,
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static struct kern_devconf kdc_bt[NBT] = { {
|
|
0, 0, 0, /* filled in by dev_attach */
|
|
"bt", 0, { MDDT_ISA, 0, "bio" },
|
|
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
|
|
&kdc_isa0, /* parent */
|
|
0, /* parentdata */
|
|
DC_UNCONFIGURED, /* always start here */
|
|
"Buslogic 742-compatible SCSI host adapter",
|
|
DC_CLS_MISC /* host adapters aren't special */
|
|
} };
|
|
|
|
static inline void
|
|
bt_registerdev(struct isa_device *id)
|
|
{
|
|
if(id->id_unit)
|
|
kdc_bt[id->id_unit] = kdc_bt[0];
|
|
kdc_bt[id->id_unit].kdc_unit = id->id_unit;
|
|
kdc_bt[id->id_unit].kdc_parentdata = id;
|
|
dev_attach(&kdc_bt[id->id_unit]);
|
|
}
|
|
|
|
#endif /*KERNEL */
|
|
|
|
#define BT_RESET_TIMEOUT 1000
|
|
#ifndef KERNEL
|
|
main()
|
|
{
|
|
printf("bt_data is %d bytes\n", sizeof(struct bt_data));
|
|
printf("bt_ccb is %d bytes\n", sizeof(struct bt_ccb));
|
|
printf("bt_mbx is %d bytes\n", sizeof(struct bt_mbx));
|
|
}
|
|
|
|
#else /*KERNEL */
|
|
|
|
/*
|
|
* bt_cmd(unit, icnt, ocnt, wait, retval, opcode, args)
|
|
*
|
|
* Activate Adapter command
|
|
* icnt: number of args (outbound bytes written after opcode)
|
|
* ocnt: number of expected returned bytes
|
|
* wait: number of seconds to wait for response
|
|
* retval: buffer where to place returned bytes
|
|
* opcode: opcode BT_NOP, BT_MBX_INIT, BT_START_SCSI ...
|
|
* args: parameters
|
|
*
|
|
* Performs an adapter command through the ports. Not to be confused with a
|
|
* scsi command, which is read in via the dma; one of the adapter commands
|
|
* tells it to read in a scsi command.
|
|
*/
|
|
static int
|
|
bt_cmd(unit, icnt, ocnt, wait, retval, opcode, args)
|
|
int unit;
|
|
int icnt;
|
|
int ocnt;
|
|
int wait;
|
|
u_char *retval;
|
|
unsigned opcode;
|
|
u_char args;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
unsigned *ic = &opcode;
|
|
u_char oc;
|
|
register i;
|
|
int sts;
|
|
|
|
/*
|
|
* multiply the wait argument by a big constant
|
|
* zero defaults to 1
|
|
*/
|
|
if (wait)
|
|
wait *= 100000;
|
|
else
|
|
wait = 100000;
|
|
/*
|
|
* Wait for the adapter to go idle, unless it's one of
|
|
* the commands which don't need this
|
|
*/
|
|
if (opcode != BT_MBX_INIT && opcode != BT_START_SCSI) {
|
|
i = 100000; /* 1 sec? */
|
|
while (--i) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts & BT_IDLE) {
|
|
break;
|
|
}
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
if(!btprobing)
|
|
printf("bt%d: bt_cmd, host not idle(0x%x)\n",
|
|
unit, sts);
|
|
return (ENXIO);
|
|
}
|
|
}
|
|
/*
|
|
* Now that it is idle, if we expect output, preflush the
|
|
* queue feeding to us.
|
|
*/
|
|
if (ocnt) {
|
|
while ((inb(BT_CTRL_STAT_PORT)) & BT_DF)
|
|
inb(BT_CMD_DATA_PORT);
|
|
}
|
|
/*
|
|
* Output the command and the number of arguments given
|
|
* for each byte, first check the port is empty.
|
|
*/
|
|
icnt++;
|
|
/* include the command */
|
|
while (icnt--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
for (i = wait; i; i--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (!(sts & BT_CDF))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
if(!btprobing)
|
|
printf("bt%d: bt_cmd, cmd/data port full\n",
|
|
unit);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return (ENXIO);
|
|
}
|
|
outb(BT_CMD_DATA_PORT, (u_char) (*ic++));
|
|
}
|
|
/*
|
|
* If we expect input, loop that many times, each time,
|
|
* looking for the data register to have valid data
|
|
*/
|
|
while (ocnt--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
for (i = wait; i; i--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts & BT_DF)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
if(!btprobing)
|
|
printf("bt%d: bt_cmd, cmd/data port empty %d\n",
|
|
unit, ocnt);
|
|
return (ENXIO);
|
|
}
|
|
oc = inb(BT_CMD_DATA_PORT);
|
|
if (retval)
|
|
*retval++ = oc;
|
|
}
|
|
/*
|
|
* Wait for the board to report a finised instruction
|
|
*/
|
|
i = 100000; /* 1 sec? */
|
|
while (--i) {
|
|
sts = inb(BT_INTR_PORT);
|
|
if (sts & BT_HACC) {
|
|
break;
|
|
}
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
if(!btprobing)
|
|
printf("bt%d: bt_cmd, host not finished(0x%x)\n",
|
|
unit, sts);
|
|
return (ENXIO);
|
|
}
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check if the device can be found at the port given
|
|
* and if so, set it up ready for further work
|
|
* as an argument, takes the isa_device structure from
|
|
* autoconf.c
|
|
*/
|
|
static int
|
|
btprobe(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
/*
|
|
* find unit and check we have that many defined
|
|
*/
|
|
int unit = btunit;
|
|
struct bt_data *bt;
|
|
|
|
btprobing = 1;
|
|
if (unit >= NBT) {
|
|
printf("bt%d: unit number too high\n", unit);
|
|
return 0;
|
|
}
|
|
/*
|
|
* Allocate a storage area for us
|
|
*/
|
|
if (btdata[unit]) {
|
|
printf("bt%d: memory already allocated\n", unit);
|
|
return 0;
|
|
}
|
|
bt = malloc(sizeof(struct bt_data), M_TEMP, M_NOWAIT);
|
|
if (!bt) {
|
|
printf("bt%d: cannot malloc!\n", unit);
|
|
return 0;
|
|
}
|
|
bzero(bt, sizeof(struct bt_data));
|
|
btdata[unit] = bt;
|
|
if(dev->id_iobase > 0xFFF) /* an EISA card, we have an EISA port */
|
|
{
|
|
int i = inb(dev->id_iobase + 0x0C);
|
|
static unsigned long bt_iobase[8] =
|
|
{ 0x330,0x334,0x230,0x234,0x130,0x134,0x00,0x00 };
|
|
|
|
if (!(dev->id_iobase = bt_iobase[i&7])) {
|
|
printf("bt_iobase disabled or invalid; index %d\n"
|
|
,i&7);
|
|
return 0;
|
|
}
|
|
#if defined(DEBUG)
|
|
printf("btprobe: Trying iobase 0x%x\n",dev->dev_addr);
|
|
#endif /* defined(DEBUG) */
|
|
}
|
|
|
|
bt->bt_base = dev->id_iobase;
|
|
|
|
#ifndef DEV_LKM
|
|
bt_registerdev(dev);
|
|
#endif /* not DEV_LKM */
|
|
|
|
/*
|
|
* Try initialise a unit at this location
|
|
* sets up dma and bus speed, loads bt->bt_int
|
|
*/
|
|
if (bt_init(unit) != 0) {
|
|
btdata[unit] = NULL;
|
|
free(bt, M_TEMP);
|
|
return 0;
|
|
}
|
|
/*
|
|
* If it's there, put in it's interrupt vectors
|
|
*/
|
|
dev->id_unit = unit;
|
|
dev->id_irq = (1 << bt->bt_int);
|
|
dev->id_drq = bt->bt_dma;
|
|
|
|
btunit++;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Attach all the sub-devices we can find
|
|
*/
|
|
static int
|
|
btattach(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
int unit = dev->id_unit;
|
|
struct bt_data *bt = btdata[unit];
|
|
struct scsibus_data *scbus;
|
|
|
|
btprobing = 0;
|
|
/*
|
|
* fill in the prototype scsi_link.
|
|
*/
|
|
bt->sc_link.adapter_unit = unit;
|
|
bt->sc_link.adapter_targ = bt->bt_scsi_dev;
|
|
bt->sc_link.adapter = &bt_switch;
|
|
bt->sc_link.device = &bt_dev;
|
|
bt->sc_link.flags = SDEV_BOUNCE;
|
|
|
|
/*
|
|
* Prepare the scsibus_data area for the upperlevel
|
|
* scsi code.
|
|
*/
|
|
scbus = scsi_alloc_bus();
|
|
/* XXX scbus->magtarg should be adjusted for Wide cards */
|
|
if(!scbus)
|
|
return 0;
|
|
scbus->adapter_link = &bt->sc_link;
|
|
|
|
kdc_bt[unit].kdc_state = DC_BUSY; /* host adapters are always busy */
|
|
|
|
/*
|
|
* ask the adapter what subunits are present
|
|
*/
|
|
scsi_attachdevs(scbus);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return some information to the caller about the adapter and its
|
|
* capabilities.
|
|
*/
|
|
static u_int32
|
|
bt_adapter_info(unit)
|
|
int unit;
|
|
{
|
|
return (2); /* 2 outstanding requests at a time per device */
|
|
}
|
|
|
|
/*
|
|
* Catch an interrupt from the adaptor
|
|
*/
|
|
void
|
|
btintr(unit)
|
|
int unit;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
BT_MBI *wmbi;
|
|
struct bt_mbx *wmbx;
|
|
struct bt_ccb *ccb;
|
|
unsigned char stat;
|
|
int i, wait;
|
|
int found = 0;
|
|
|
|
#ifdef UTEST
|
|
printf("btintr ");
|
|
#endif
|
|
/*
|
|
* First acknowlege the interrupt, Then if it's
|
|
* not telling about a completed operation
|
|
* just return.
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
|
|
/* Mail Box out empty ? */
|
|
if (stat & BT_MBOA) {
|
|
printf("bt%d: Available Free mbo post\n", unit);
|
|
/* Disable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
wait = 100000; /* 1 sec enough? */
|
|
for (i = wait; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
printf("bt%d: bt_intr, cmd/data port full\n", unit);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return;
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x00); /* Disable */
|
|
wakeup((caddr_t)&bt->bt_mbx);
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return;
|
|
}
|
|
if (!(stat & BT_MBIF)) {
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return;
|
|
}
|
|
/*
|
|
* If it IS then process the competed operation
|
|
*/
|
|
wmbx = &bt->bt_mbx;
|
|
wmbi = wmbx->tmbi;
|
|
AGAIN:
|
|
while (wmbi->stat != BT_MBI_FREE) {
|
|
ccb = bt_ccb_phys_kv(bt, (wmbi->ccb_addr));
|
|
if (!ccb) {
|
|
wmbi->stat = BT_MBI_FREE;
|
|
printf("bt: BAD CCB ADDR!\n");
|
|
continue;
|
|
}
|
|
found++;
|
|
if ((stat = wmbi->stat) != BT_MBI_OK) {
|
|
switch (stat) {
|
|
case BT_MBI_ABORT:
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
printf("abort ");
|
|
#endif
|
|
ccb->host_stat = BT_ABORTED;
|
|
break;
|
|
|
|
case BT_MBI_UNKNOWN:
|
|
ccb = (struct bt_ccb *) 0;
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
printf("unknown ccb for abort");
|
|
#endif
|
|
break;
|
|
|
|
case BT_MBI_ERROR:
|
|
break;
|
|
|
|
default:
|
|
panic("Impossible mbxi status");
|
|
|
|
}
|
|
#ifdef UTEST
|
|
if ((bt_debug & BT_SHOWCMDS) && ccb) {
|
|
u_char *cp;
|
|
cp = ccb->scsi_cmd;
|
|
printf("op=%x %x %x %x %x %x\n",
|
|
cp[0], cp[1], cp[2],
|
|
cp[3], cp[4], cp[5]);
|
|
printf("stat %x for mbi addr = 0x%08x\n"
|
|
,wmbi->stat, wmbi);
|
|
printf("addr = 0x%x\n", ccb);
|
|
}
|
|
#endif
|
|
}
|
|
wmbi->stat = BT_MBI_FREE;
|
|
if (ccb) {
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
bt_done(unit, ccb);
|
|
}
|
|
/* Set the IN mail Box pointer for next */ bt_nextmbx(wmbi, wmbx, mbi);
|
|
}
|
|
if (!found) {
|
|
for (i = 0; i < BT_MBX_SIZE; i++) {
|
|
if (wmbi->stat != BT_MBI_FREE) {
|
|
found++;
|
|
break;
|
|
}
|
|
bt_nextmbx(wmbi, wmbx, mbi);
|
|
}
|
|
if (!found) {
|
|
#ifdef DEBUG
|
|
printf("bt%d: mbi at 0x%08x should be found, stat=%02x..resync\n",
|
|
unit, wmbi, stat);
|
|
#endif
|
|
} else {
|
|
found = 0;
|
|
goto AGAIN;
|
|
}
|
|
}
|
|
wmbx->tmbi = wmbi;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
}
|
|
|
|
/*
|
|
* A ccb is put onto the free list.
|
|
*/
|
|
static void
|
|
bt_free_ccb(unit, ccb, flags)
|
|
int unit;
|
|
struct bt_ccb *ccb;
|
|
int flags;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
unsigned int opri;
|
|
|
|
opri = splbio();
|
|
|
|
ccb->next = bt->bt_ccb_free;
|
|
bt->bt_ccb_free = ccb;
|
|
ccb->flags = CCB_FREE;
|
|
/*
|
|
* If there were none, wake anybody waiting for one to come free,
|
|
* starting with queued entries.
|
|
*/
|
|
if (!ccb->next) {
|
|
wakeup((caddr_t)&bt->bt_ccb_free);
|
|
}
|
|
|
|
splx(opri);
|
|
}
|
|
|
|
/*
|
|
* Get a free ccb
|
|
*
|
|
* 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 bt_ccb *
|
|
bt_get_ccb(unit, flags)
|
|
int unit;
|
|
int flags;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
unsigned opri;
|
|
struct bt_ccb *ccbp;
|
|
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 (!(ccbp = bt->bt_ccb_free)) {
|
|
if (bt->numccbs < BT_CCB_MAX) {
|
|
if (ccbp = (struct bt_ccb *) malloc(sizeof(struct bt_ccb),
|
|
M_TEMP,
|
|
M_NOWAIT)) {
|
|
bzero(ccbp, sizeof(struct bt_ccb));
|
|
bt->numccbs++;
|
|
ccbp->flags = CCB_ACTIVE;
|
|
/*
|
|
* put in the phystokv hash table
|
|
* Never gets taken out.
|
|
*/
|
|
ccbp->hashkey = KVTOPHYS(ccbp);
|
|
hashnum = CCB_HASH(ccbp->hashkey);
|
|
ccbp->nexthash = bt->ccbhash[hashnum];
|
|
bt->ccbhash[hashnum] = ccbp;
|
|
} else {
|
|
printf("bt%d: Can't malloc CCB\n", unit);
|
|
}
|
|
goto gottit;
|
|
} else {
|
|
if (!(flags & SCSI_NOSLEEP)) {
|
|
tsleep((caddr_t)&bt->bt_ccb_free, PRIBIO,
|
|
"btccb", 0);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (ccbp) {
|
|
/* Get CCB from from free list */
|
|
bt->bt_ccb_free = ccbp->next;
|
|
ccbp->flags = CCB_ACTIVE;
|
|
}
|
|
gottit:
|
|
splx(opri);
|
|
|
|
return (ccbp);
|
|
}
|
|
|
|
/*
|
|
* given a physical address, find the ccb that
|
|
* it corresponds to:
|
|
*/
|
|
static struct bt_ccb *
|
|
bt_ccb_phys_kv(bt, ccb_phys)
|
|
struct bt_data *bt;
|
|
physaddr ccb_phys;
|
|
{
|
|
int hashnum = CCB_HASH(ccb_phys);
|
|
struct bt_ccb *ccbp = bt->ccbhash[hashnum];
|
|
|
|
while (ccbp) {
|
|
if (ccbp->hashkey == ccb_phys)
|
|
break;
|
|
ccbp = ccbp->nexthash;
|
|
}
|
|
return ccbp;
|
|
}
|
|
|
|
/*
|
|
* Get a MBO and then Send it
|
|
*/
|
|
static BT_MBO *
|
|
bt_send_mbo(int unit, int flags, int cmd, struct bt_ccb *ccb)
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
unsigned opri;
|
|
BT_MBO *wmbo; /* Mail Box Out pointer */
|
|
struct bt_mbx *wmbx; /* Mail Box pointer specified unit */
|
|
int i, wait;
|
|
|
|
wmbx = &bt->bt_mbx;
|
|
|
|
opri = splbio();
|
|
|
|
/* Get the Target OUT mail Box pointer and move to Next */
|
|
wmbo = wmbx->tmbo;
|
|
wmbx->tmbo = (wmbo == &(wmbx->mbo[BT_MBX_SIZE - 1]) ?
|
|
&(wmbx->mbo[0]) : wmbo + 1);
|
|
|
|
/*
|
|
* Check the outmail box is free or not.
|
|
* Note: Under the normal operation, it shuld NOT happen to wait.
|
|
*/
|
|
while (wmbo->cmd != BT_MBO_FREE) {
|
|
wait = 100000; /* 1 sec enough? */
|
|
/* Enable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
for (i = wait; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
printf("bt%d: bt_send_mbo, cmd/data port full\n", unit);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return ((BT_MBO *) 0);
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x01); /* Enable */
|
|
tsleep((caddr_t)wmbx, PRIBIO, "btsend", 0);
|
|
/* XXX */ /*can't do this! */
|
|
/* May be servicing an int */
|
|
}
|
|
/* Link CCB to the Mail Box */
|
|
wmbo->ccb_addr = KVTOPHYS(ccb);
|
|
ccb->mbx = wmbo;
|
|
wmbo->cmd = cmd;
|
|
|
|
/* Send it! */
|
|
outb(BT_CMD_DATA_PORT, BT_START_SCSI);
|
|
|
|
splx(opri);
|
|
|
|
return (wmbo);
|
|
}
|
|
|
|
/*
|
|
* We have a ccb which has been processed by the
|
|
* adaptor, now we look to see how the operation
|
|
* went. Wake up the owner if waiting
|
|
*/
|
|
static void
|
|
bt_done(unit, ccb)
|
|
int unit;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct scsi_sense_data *s1, *s2;
|
|
struct scsi_xfer *xs = ccb->xfer;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_done\n"));
|
|
/*
|
|
* Otherwise, put the results of the operation
|
|
* into the xfer and call whoever started it
|
|
*/
|
|
if ((ccb->host_stat != BT_OK || ccb->target_stat != SCSI_OK)
|
|
&& (!(xs->flags & SCSI_ERR_OK))) {
|
|
|
|
s1 = &(ccb->scsi_sense);
|
|
s2 = &(xs->sense);
|
|
|
|
if (ccb->host_stat) {
|
|
switch (ccb->host_stat) {
|
|
case BT_ABORTED: /* No response */
|
|
case BT_SEL_TIMEOUT: /* No response */
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("timeout reported back\n"));
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
default: /* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("unexpected host_stat: %x\n",
|
|
ccb->host_stat));
|
|
}
|
|
} else {
|
|
switch (ccb->target_stat) {
|
|
case 0x02:
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case 0x08:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("unexpected target_stat: %x\n",
|
|
ccb->target_stat));
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
}
|
|
} else { /* All went correctly OR errors expected */
|
|
xs->resid = 0;
|
|
}
|
|
xs->flags |= ITSDONE;
|
|
bt_free_ccb(unit, ccb, xs->flags);
|
|
scsi_done(xs);
|
|
}
|
|
|
|
/*
|
|
* Start the board, ready for normal operation
|
|
*/
|
|
static int
|
|
bt_init(unit)
|
|
int unit;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
unsigned char ad[4];
|
|
volatile int i, sts;
|
|
struct bt_config conf;
|
|
struct bt_ext_info info;
|
|
struct bt_board_info binfo;
|
|
|
|
/*
|
|
* reset board, If it doesn't respond, assume
|
|
* that it's not there.. good for the probe
|
|
*/
|
|
|
|
outb(BT_CTRL_STAT_PORT, BT_HRST | BT_SRST);
|
|
|
|
DELAY(10000);
|
|
|
|
for (i = BT_RESET_TIMEOUT; i; i--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts == (BT_IDLE | BT_INIT))
|
|
break;
|
|
DELAY(1000);
|
|
}
|
|
if (i == 0) {
|
|
#ifdef UTEST
|
|
printf("bt_init: No answer from board\n");
|
|
#endif
|
|
return (ENXIO);
|
|
}
|
|
|
|
DELAY(10000);
|
|
|
|
/*
|
|
* Displaying Board ID and Hardware Revision
|
|
* 94/05/18 amurai@spec.co.jp
|
|
*/
|
|
i = bt_cmd(unit, 1, sizeof(binfo),0,
|
|
&binfo,BT_GET_BOARD_INFO,sizeof(binfo));
|
|
if(i)
|
|
return i;
|
|
printf("bt%d: Bt%c%c%c%c/%c%d-", unit,
|
|
binfo.id[0],
|
|
binfo.id[1],
|
|
binfo.id[2],
|
|
binfo.id[3],
|
|
binfo.ver[0],
|
|
(unsigned) binfo.ver[1]
|
|
);
|
|
|
|
/*
|
|
* Make sure board has a capability of 32bit addressing.
|
|
* and Firmware also need a capability of 32bit addressing pointer
|
|
* in Extended mailbox and ccb structure.
|
|
* 94/05/18 amurai@spec.co.jp
|
|
*/
|
|
bt_cmd(unit, 1, sizeof(info),0,&info, BT_INQUIRE_EXTENDED,sizeof(info));
|
|
switch (info.bus_type) {
|
|
case BT_BUS_TYPE_24bit: /* PC/AT 24 bit address bus */
|
|
printf("ISA(24bit) bus\n");
|
|
break;
|
|
case BT_BUS_TYPE_32bit: /* EISA/VLB/PCI 32 bit bus */
|
|
printf("PCI/EISA/VLB(32bit) bus\n");
|
|
break;
|
|
case BT_BUS_TYPE_MCA: /* forget it right now */
|
|
printf("MCA bus architecture...");
|
|
printf("giving up\n");
|
|
return (ENXIO);
|
|
break;
|
|
default:
|
|
printf("Unknown state...");
|
|
printf("giving up\n");
|
|
return (ENXIO);
|
|
break;
|
|
}
|
|
if ( binfo.id[0] == '5' ) {
|
|
printf("bt%d: This driver is designed for using 32 bit addressing\n",unit);
|
|
printf("bt%d: mode firmware and EISA/PCI/VLB bus architectures\n",unit);
|
|
printf("bt%d: Bounce-buffering will be used (and is necessary)\n", unit);
|
|
printf("bt%d: if you have more than 16MBytes memory.\n",unit);
|
|
} else if ( info.bus_type == BT_BUS_TYPE_24bit ) {
|
|
printf("bt%d: Your board should report a 32bit bus architecture type..\n",unit);
|
|
printf("bt%d: The firmware on your board may have a problem with over\n",unit);
|
|
printf("bt%d: 16MBytes memory handling with this driver.\n",unit);
|
|
}
|
|
|
|
/*
|
|
* Assume we have a board at this stage
|
|
* setup dma channel from jumpers and save int
|
|
* level
|
|
*/
|
|
printf("bt%d: reading board settings, ", unit);
|
|
|
|
bt_cmd(unit, 0, sizeof(conf), 0, &conf, BT_CONF_GET);
|
|
switch (conf.chan) {
|
|
case EISADMA:
|
|
bt->bt_dma = -1;
|
|
break;
|
|
case CHAN0:
|
|
outb(0x0b, 0x0c);
|
|
outb(0x0a, 0x00);
|
|
bt->bt_dma = 0;
|
|
break;
|
|
case CHAN5:
|
|
outb(0xd6, 0xc1);
|
|
outb(0xd4, 0x01);
|
|
bt->bt_dma = 5;
|
|
break;
|
|
case CHAN6:
|
|
outb(0xd6, 0xc2);
|
|
outb(0xd4, 0x02);
|
|
bt->bt_dma = 6;
|
|
break;
|
|
case CHAN7:
|
|
outb(0xd6, 0xc3);
|
|
outb(0xd4, 0x03);
|
|
bt->bt_dma = 7;
|
|
break;
|
|
default:
|
|
printf("illegal dma setting %x\n", conf.chan);
|
|
return (EIO);
|
|
}
|
|
if (bt->bt_dma == -1)
|
|
printf("busmastering, ");
|
|
else
|
|
printf("dma=%d, ", bt->bt_dma);
|
|
|
|
switch (conf.intr) {
|
|
case INT9:
|
|
bt->bt_int = 9;
|
|
break;
|
|
case INT10:
|
|
bt->bt_int = 10;
|
|
break;
|
|
case INT11:
|
|
bt->bt_int = 11;
|
|
break;
|
|
case INT12:
|
|
bt->bt_int = 12;
|
|
break;
|
|
case INT14:
|
|
bt->bt_int = 14;
|
|
break;
|
|
case INT15:
|
|
bt->bt_int = 15;
|
|
break;
|
|
default:
|
|
printf("illegal int setting\n");
|
|
return (EIO);
|
|
}
|
|
printf("int=%d\n", bt->bt_int);
|
|
|
|
/* who are we on the scsi bus */
|
|
bt->bt_scsi_dev = conf.scsi_dev;
|
|
/*
|
|
* Initialize mail box
|
|
*/
|
|
*((physaddr *) ad) = KVTOPHYS(&bt->bt_mbx);
|
|
bt_cmd(unit, 5, 0, 0, 0, BT_MBX_INIT_EXTENDED
|
|
,BT_MBX_SIZE
|
|
,ad[0]
|
|
,ad[1]
|
|
,ad[2]
|
|
,ad[3]);
|
|
|
|
/*
|
|
* Set Pointer chain null for just in case
|
|
* Link the ccb's into a free-list W/O mbox
|
|
* Initialize mail box status to free
|
|
*/
|
|
if (bt->bt_ccb_free != (struct bt_ccb *) 0) {
|
|
printf("bt%d: bt_ccb_free is NOT initialized but init here\n",
|
|
unit);
|
|
bt->bt_ccb_free = (struct bt_ccb *) 0;
|
|
}
|
|
for (i = 0; i < BT_MBX_SIZE; i++) {
|
|
bt->bt_mbx.mbo[i].cmd = BT_MBO_FREE;
|
|
bt->bt_mbx.mbi[i].stat = BT_MBI_FREE;
|
|
}
|
|
/*
|
|
* Set up initial mail box for round-robin operation.
|
|
*/
|
|
bt->bt_mbx.tmbo = &bt->bt_mbx.mbo[0];
|
|
bt->bt_mbx.tmbi = &bt->bt_mbx.mbi[0];
|
|
bt_inquire_setup_information(unit, &info);
|
|
|
|
|
|
/*
|
|
* Note that we are going and return (to probe)
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
bt_inquire_setup_information(
|
|
int unit,
|
|
struct bt_ext_info *info )
|
|
{
|
|
struct bt_setup setup;
|
|
struct bt_sync_value sync;
|
|
char dummy[8];
|
|
char sub_ver[3];
|
|
struct bt_boardID bID;
|
|
int i;
|
|
|
|
/* Inquire Installed Devices */
|
|
bzero( &dummy[0], sizeof(dummy) );
|
|
bt_cmd(unit, 0, sizeof(dummy), 100, &dummy[0], BT_DEV_GET);
|
|
|
|
/*
|
|
* If board has a capbility of Syncrhonouse mode,
|
|
* Get a SCSI Synchronous value
|
|
*/
|
|
|
|
if (info->s.force) { /* Assume fast sync capability */
|
|
info->s.sync = 1; /* It's appear at 4.25? version */
|
|
info->s.maxsync = 1;
|
|
}
|
|
if ( info->s.sync ) {
|
|
bt_cmd(unit, 1, sizeof(sync), 100,
|
|
&sync,BT_GET_SYNC_VALUE,sizeof(sync));
|
|
}
|
|
|
|
/*
|
|
* Inquire Board ID to board for firmware version
|
|
*/
|
|
bt_cmd(unit, 0, sizeof(bID), 0, &bID, BT_INQUIRE);
|
|
bt_cmd(unit, 0, 1, 0, &sub_ver[0], BT_INQUIRE_REV_THIRD );
|
|
i = ((int)(bID.firm_revision-'0')) * 10 + (int)(bID.firm_version-'0');
|
|
if ( i >= 33 ) {
|
|
bt_cmd(unit, 0, 1, 0, &sub_ver[1], BT_INQUIRE_REV_FOURTH );
|
|
} else {
|
|
/*
|
|
* Below rev 3.3 firmware has a problem for issuing
|
|
* the BT_INQUIRE_REV_FOURTH command.
|
|
*/
|
|
sub_ver[1]='\0';
|
|
}
|
|
sub_ver[2]='\0';
|
|
if (sub_ver[1]==' ')
|
|
sub_ver[1]='\0';
|
|
printf("bt%d: version %c.%c%s, ",
|
|
unit, bID.firm_revision, bID.firm_version, sub_ver );
|
|
|
|
/*
|
|
* Obtain setup information from board.
|
|
*/
|
|
bt_cmd(unit, 1, sizeof(setup), 0, &setup, BT_SETUP_GET, sizeof(setup));
|
|
|
|
if (setup.sync_neg && info->s.sync ) {
|
|
if ( info->s.maxsync ) {
|
|
printf("fast sync, "); /* Max 10MB/s */
|
|
} else {
|
|
printf("sync, "); /* Max 5MB/s */
|
|
}
|
|
} else {
|
|
if ( info->s.sync ) {
|
|
printf("async, "); /* Never try by board */
|
|
} else {
|
|
printf("async only, "); /* Doesn't has a capability on board */
|
|
}
|
|
}
|
|
if (setup.parity) {
|
|
printf("parity, ");
|
|
} else {
|
|
printf("no parity, ");
|
|
}
|
|
printf("%d mbxs, %d ccbs\n", setup.num_mbx, BT_CCB_MAX);
|
|
|
|
/*
|
|
* Displayi SCSI negotiation value by each target.
|
|
* amurai@spec.co.jp
|
|
*/
|
|
for (i = 0; i < 8; i++) {
|
|
if (!setup.sync[i].valid )
|
|
continue;
|
|
if ( (!setup.sync[i].offset && !setup.sync[i].period)
|
|
|| !info->s.sync ) {
|
|
printf("bt%d: targ %d async\n", unit, i);
|
|
} else {
|
|
printf("bt%d: targ %d sync rate=%2d.%02dMB/s(%dns), offset=%02d\n",
|
|
unit, i,
|
|
100 / sync.value[i],
|
|
(100 % sync.value[i]) * 100 / sync.value[i],
|
|
sync.value[i] * 10,
|
|
setup.sync[i].offset );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable round-robin scheme - appeared at firmware rev. 3.31
|
|
* Below rev 3.XX firmware has a problem for issuing
|
|
* BT_ROUND_ROBIN command amurai@spec.co.jp
|
|
*/
|
|
if ( bID.firm_revision >= '3' ) {
|
|
printf("bt%d: Using Strict Round robin scheme\n", unit);
|
|
bt_cmd(unit, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_STRICT_ROUND_ROBIN);
|
|
} else {
|
|
printf("bt%d: Not using Strict Round robin scheme\n", unit);
|
|
}
|
|
|
|
}
|
|
|
|
#ifndef min
|
|
#define min(x,y) (x < y ? x : y)
|
|
#endif /* min */
|
|
|
|
static void
|
|
btminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
if (bp->b_bcount > ((BT_NSEG - 1) * PAGESIZ)) {
|
|
bp->b_bcount = ((BT_NSEG - 1) * PAGESIZ);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* start a scsi operation given the command and the data address. Also needs
|
|
* the unit, target and lu.
|
|
*/
|
|
static int32
|
|
bt_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct bt_ccb *ccb;
|
|
struct bt_scat_gath *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int thiskv;
|
|
physaddr thisphys, nextphys;
|
|
int unit = xs->sc_link->adapter_unit;
|
|
int bytes_this_seg, bytes_this_page, datalen, flags;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_scsi_cmd\n"));
|
|
/*
|
|
* get a ccb (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 (flags & ITSDONE) {
|
|
printf("bt%d: Already done?\n", unit);
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if (!(flags & INUSE)) {
|
|
printf("bt%d: Not in use?\n", unit);
|
|
xs->flags |= INUSE;
|
|
}
|
|
if (!(ccb = bt_get_ccb(unit, flags))) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return (TRY_AGAIN_LATER);
|
|
}
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("start ccb(%p)\n", ccb));
|
|
/*
|
|
* Put all the arguments for the xfer in the ccb
|
|
*/
|
|
ccb->xfer = xs;
|
|
if (flags & SCSI_RESET) {
|
|
ccb->opcode = BT_RESET_CCB;
|
|
} else {
|
|
/* can't use S/G if zero length */
|
|
ccb->opcode = (xs->datalen ?
|
|
BT_INIT_SCAT_GATH_CCB
|
|
: BT_INITIATOR_CCB);
|
|
}
|
|
ccb->target = xs->sc_link->target;
|
|
ccb->data_out = 0;
|
|
ccb->data_in = 0;
|
|
ccb->lun = xs->sc_link->lun;
|
|
ccb->scsi_cmd_length = xs->cmdlen;
|
|
ccb->sense_ptr = KVTOPHYS(&(ccb->scsi_sense));
|
|
ccb->req_sense_length = sizeof(ccb->scsi_sense);
|
|
|
|
if ((xs->datalen) && (!(flags & SCSI_RESET))) { /* can use S/G only if not zero length */
|
|
ccb->data_addr = KVTOPHYS(ccb->scat_gath);
|
|
sg = ccb->scat_gath;
|
|
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 < BT_NSEG)) {
|
|
sg->seg_addr = (physaddr) iovp->iov_base;
|
|
xs->datalen += sg->seg_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 < BT_NSEG)) {
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
sg->seg_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->seg_len = bytes_this_seg;
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
/* end of iov/kv decision */
|
|
ccb->data_length = seg * sizeof(struct bt_scat_gath);
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
|
|
if (datalen) {
|
|
/*
|
|
* there's still data, must have run out of segs!
|
|
*/
|
|
printf("bt%d: bt_scsi_cmd, more than %d DMA segs\n",
|
|
unit, BT_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(unit, ccb, flags);
|
|
return (HAD_ERROR);
|
|
}
|
|
} else { /* No data xfer, use non S/G values */
|
|
ccb->data_addr = (physaddr) 0;
|
|
ccb->data_length = 0;
|
|
}
|
|
ccb->link_id = 0;
|
|
ccb->link_addr = (physaddr) 0;
|
|
/*
|
|
* Put the scsi command in the ccb and start it
|
|
*/
|
|
if (!(flags & SCSI_RESET)) {
|
|
bcopy(xs->cmd, ccb->scsi_cmd, ccb->scsi_cmd_length);
|
|
}
|
|
if (bt_send_mbo(unit, flags, BT_MBO_START, ccb) == (BT_MBO *) 0) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(unit, ccb, flags);
|
|
return (TRY_AGAIN_LATER);
|
|
}
|
|
/*
|
|
* Usually return SUCCESSFULLY QUEUED
|
|
*/
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n"));
|
|
if (!(flags & SCSI_NOMASK)) {
|
|
timeout(bt_timeout, (caddr_t)ccb, (xs->timeout * hz) / 1000);
|
|
return (SUCCESSFULLY_QUEUED);
|
|
}
|
|
/*
|
|
* If we can't use interrupts, poll on completion
|
|
*/
|
|
return (bt_poll(unit, xs, ccb));
|
|
}
|
|
|
|
/*
|
|
* Poll a particular unit, looking for a particular xs
|
|
*/
|
|
static int
|
|
bt_poll(unit, xs, ccb)
|
|
int unit;
|
|
struct scsi_xfer *xs;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
int count = xs->timeout;
|
|
u_char stat;
|
|
|
|
/* timeouts are in msec, so we loop in 1000 usec cycles */
|
|
while (count) {
|
|
/*
|
|
* If we had interrupts enabled, would we
|
|
* have got an interrupt?
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if (stat & BT_ANY_INTR) {
|
|
btintr(unit);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out, so call the timeout handler manually,
|
|
* accounting for the fact that the clock is not running yet
|
|
* by taking out the clock queue entry it makes.
|
|
*/
|
|
bt_timeout(ccb);
|
|
|
|
/*
|
|
* because we are polling, take out the timeout entry
|
|
* bt_timeout made
|
|
*/
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
count = 2000;
|
|
while (count) {
|
|
/*
|
|
* Once again, wait for the int bit
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if (stat & BT_ANY_INTR) {
|
|
btintr(unit);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out again... This is bad. Notice that
|
|
* this time there is no clock queue entry to remove.
|
|
*/
|
|
bt_timeout(ccb);
|
|
}
|
|
}
|
|
if (xs->error)
|
|
return (HAD_ERROR);
|
|
return (COMPLETE);
|
|
}
|
|
|
|
static void
|
|
bt_timeout(void *arg1)
|
|
{
|
|
struct bt_ccb * ccb = (struct bt_ccb *)arg1;
|
|
int unit;
|
|
struct bt_data *bt;
|
|
int s = splbio();
|
|
|
|
/*
|
|
* A timeout routine in kernel DONOT unlink
|
|
* Entry chains when time outed....So infinity Loop..
|
|
* 94/04/20 amurai@spec.co.jp
|
|
*/
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
|
|
unit = ccb->xfer->sc_link->adapter_unit;
|
|
bt = btdata[unit];
|
|
|
|
#ifdef UTEST
|
|
bt_print_active_ccbs(unit);
|
|
#endif
|
|
|
|
/*
|
|
* If the ccb's mbx is not free, then the board has gone Far East?
|
|
*/
|
|
if (bt_ccb_phys_kv(bt, ccb->mbx->ccb_addr) == ccb &&
|
|
ccb->mbx->cmd != BT_MBO_FREE) {
|
|
printf("bt%d: not taking commands!\n", unit);
|
|
Debugger("bt742a");
|
|
}
|
|
/*
|
|
* If it has been through before, then
|
|
* a previous abort has failed, don't
|
|
* try abort again
|
|
*/
|
|
if (ccb->flags == CCB_ABORTED) {
|
|
/*
|
|
* abort timed out
|
|
*/
|
|
printf("bt%d: Abort Operation has timed out\n", unit);
|
|
ccb->xfer->retries = 0; /* I MEAN IT ! */
|
|
ccb->host_stat = BT_ABORTED;
|
|
bt_done(unit, ccb);
|
|
} else {
|
|
/* abort the operation that has timed out */
|
|
printf("bt%d: Try to abort\n", unit);
|
|
bt_send_mbo(unit, ~SCSI_NOMASK,
|
|
BT_MBO_ABORT, ccb);
|
|
/* 2 secs for the abort */
|
|
ccb->flags = CCB_ABORTED;
|
|
timeout(bt_timeout, (caddr_t)ccb, 2 * hz);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
#ifdef UTEST
|
|
static void
|
|
bt_print_ccb(ccb)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
printf("ccb:%x op:%x cmdlen:%d senlen:%d\n"
|
|
,ccb
|
|
,ccb->opcode
|
|
,ccb->scsi_cmd_length
|
|
,ccb->req_sense_length);
|
|
printf(" datlen:%d hstat:%x tstat:%x flags:%x\n"
|
|
,ccb->data_length
|
|
,ccb->host_stat
|
|
,ccb->target_stat
|
|
,ccb->flags);
|
|
}
|
|
|
|
static void
|
|
bt_print_active_ccbs(int unit)
|
|
{
|
|
struct bt_data *bt = btdata[unit];
|
|
struct bt_ccb *ccb;
|
|
int i = 0;
|
|
|
|
while (i < CCB_HASH_SIZE) {
|
|
ccb = bt->ccbhash[i];
|
|
while (ccb) {
|
|
if (ccb->flags != CCB_FREE)
|
|
bt_print_ccb(ccb);
|
|
ccb = ccb->nexthash;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
#endif /*UTEST */
|
|
#endif /*KERNEL */
|