1436 lines
34 KiB
C
1436 lines
34 KiB
C
/* $NetBSD: bt742a.c,v 1.44 1995/07/29 23:04:57 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Charles Hannum. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Charles Hannum.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Originally written by Julian Elischer (julian@tfs.com)
|
|
* for TRW Financial Systems for use under the MACH(2.5) operating system.
|
|
*
|
|
* TRW Financial Systems, in accordance with their agreement with Carnegie
|
|
* Mellon University, makes this software available to CMU to distribute
|
|
* or use in any manner that they see fit as long as this message is kept with
|
|
* the software. For this reason TFS also grants any other persons or
|
|
* organisations permission to use or modify this software.
|
|
*
|
|
* TFS supplies this software to be publicly redistributed
|
|
* on the understanding that TFS is not responsible for the correct
|
|
* functioning of this software in any circumstances.
|
|
*/
|
|
|
|
/*
|
|
* bt742a SCSI driver
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/user.h>
|
|
|
|
#include <machine/pio.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
#include <dev/isa/isadmavar.h>
|
|
#include <scsi/scsi_all.h>
|
|
#include <scsi/scsiconf.h>
|
|
|
|
#ifdef DDB
|
|
int Debugger();
|
|
#else /* DDB */
|
|
#define Debugger() panic("should call debugger here (bt742a.c)")
|
|
#endif /* DDB */
|
|
|
|
typedef u_long physaddr;
|
|
typedef u_long physlen;
|
|
|
|
/*
|
|
* I/O Port Interface
|
|
*/
|
|
#define BT_BASE bt->sc_iobase
|
|
#define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */
|
|
#define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */
|
|
#define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */
|
|
|
|
/*
|
|
* BT_CTRL_STAT bits (write)
|
|
*/
|
|
#define BT_HRST 0x80 /* Hardware reset */
|
|
#define BT_SRST 0x40 /* Software reset */
|
|
#define BT_IRST 0x20 /* Interrupt reset */
|
|
#define BT_SCRST 0x10 /* SCSI bus reset */
|
|
|
|
/*
|
|
* BT_CTRL_STAT bits (read)
|
|
*/
|
|
#define BT_STST 0x80 /* Self test in Progress */
|
|
#define BT_DIAGF 0x40 /* Diagnostic Failure */
|
|
#define BT_INIT 0x20 /* Mbx Init required */
|
|
#define BT_IDLE 0x10 /* Host Adapter Idle */
|
|
#define BT_CDF 0x08 /* cmd/data out port full */
|
|
#define BT_DF 0x04 /* Data in port full */
|
|
#define BT_INVDCMD 0x01 /* Invalid command */
|
|
|
|
/*
|
|
* BT_CMD_DATA bits (write)
|
|
*/
|
|
#define BT_NOP 0x00 /* No operation */
|
|
#define BT_MBX_INIT 0x01 /* Mbx initialization */
|
|
#define BT_START_SCSI 0x02 /* start scsi command */
|
|
#define BT_START_BIOS 0x03 /* start bios command */
|
|
#define BT_INQUIRE 0x04 /* Adapter Inquiry */
|
|
#define BT_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */
|
|
#define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */
|
|
#define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */
|
|
#define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */
|
|
#define BT_SPEED_SET 0x09 /* set transfer speed */
|
|
#define BT_DEV_GET 0x0a /* return installed devices */
|
|
#define BT_CONF_GET 0x0b /* return configuration data */
|
|
#define BT_TARGET_EN 0x0c /* enable target mode */
|
|
#define BT_SETUP_GET 0x0d /* return setup data */
|
|
#define BT_WRITE_CH2 0x1a /* write channel 2 buffer */
|
|
#define BT_READ_CH2 0x1b /* read channel 2 buffer */
|
|
#define BT_WRITE_FIFO 0x1c /* write fifo buffer */
|
|
#define BT_READ_FIFO 0x1d /* read fifo buffer */
|
|
#define BT_ECHO 0x1e /* Echo command data */
|
|
#define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */
|
|
#define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */
|
|
|
|
/* Follows command appeared at FirmWare 3.31 */
|
|
#define BT_ROUND_ROBIN 0x8f /* Enable/Disable(default) round robin */
|
|
#define BT_DISABLE 0x00 /* Parameter value for Disable */
|
|
#define BT_ENABLE 0x01 /* Parameter value for Enable */
|
|
|
|
/*
|
|
* BT_INTR_PORT bits (read)
|
|
*/
|
|
#define BT_ANY_INTR 0x80 /* Any interrupt */
|
|
#define BT_SCRD 0x08 /* SCSI reset detected */
|
|
#define BT_HACC 0x04 /* Command complete */
|
|
#define BT_MBOA 0x02 /* MBX out empty */
|
|
#define BT_MBIF 0x01 /* MBX in full */
|
|
|
|
/*
|
|
* Mail box defs etc.
|
|
* these could be bigger but we need the bt_softc to fit on a single page..
|
|
*/
|
|
#define BT_MBX_SIZE 32 /* mail box size (MAX 255 MBxs) */
|
|
/* don't need that many really */
|
|
#define BT_CCB_MAX 32 /* store up to 32 CCBs at one time */
|
|
#define CCB_HASH_SIZE 32 /* hash table size for phystokv */
|
|
#define CCB_HASH_SHIFT 9
|
|
#define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
|
|
|
|
#define bt_nextmbx(wmb, mbx, mbio) \
|
|
if ((wmb) == &(mbx)->mbio[BT_MBX_SIZE - 1]) \
|
|
(wmb) = &(mbx)->mbio[0]; \
|
|
else \
|
|
(wmb)++;
|
|
|
|
struct bt_mbx_out {
|
|
physaddr ccb_addr;
|
|
u_char dummy[3];
|
|
u_char cmd;
|
|
};
|
|
|
|
struct bt_mbx_in {
|
|
physaddr ccb_addr;
|
|
u_char btstat;
|
|
u_char sdstat;
|
|
u_char dummy;
|
|
u_char stat;
|
|
};
|
|
|
|
struct bt_mbx {
|
|
struct bt_mbx_out mbo[BT_MBX_SIZE];
|
|
struct bt_mbx_in mbi[BT_MBX_SIZE];
|
|
struct bt_mbx_out *tmbo; /* Target Mail Box out */
|
|
struct bt_mbx_in *tmbi; /* Target Mail Box in */
|
|
};
|
|
|
|
/*
|
|
* mbo.cmd values
|
|
*/
|
|
#define BT_MBO_FREE 0x0 /* MBO entry is free */
|
|
#define BT_MBO_START 0x1 /* MBO activate entry */
|
|
#define BT_MBO_ABORT 0x2 /* MBO abort entry */
|
|
|
|
/*
|
|
* mbi.stat values
|
|
*/
|
|
#define BT_MBI_FREE 0x0 /* MBI entry is free */
|
|
#define BT_MBI_OK 0x1 /* completed without error */
|
|
#define BT_MBI_ABORT 0x2 /* aborted ccb */
|
|
#define BT_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */
|
|
#define BT_MBI_ERROR 0x4 /* Completed with error */
|
|
|
|
#if defined(BIG_DMA)
|
|
WARNING...THIS WON'T WORK(won't fit on 1 page)
|
|
/* #define BT_NSEG 2048 /* Number of scatter gather segments - to much vm */
|
|
#define BT_NSEG 128
|
|
#else
|
|
#define BT_NSEG 33
|
|
#endif /* BIG_DMA */
|
|
|
|
struct bt_scat_gath {
|
|
physlen seg_len;
|
|
physaddr seg_addr;
|
|
};
|
|
|
|
struct bt_ccb {
|
|
u_char opcode;
|
|
u_char:3, data_in:1, data_out:1,:3;
|
|
u_char scsi_cmd_length;
|
|
u_char req_sense_length;
|
|
/*------------------------------------longword boundary */
|
|
physlen data_length;
|
|
/*------------------------------------longword boundary */
|
|
physaddr data_addr;
|
|
/*------------------------------------longword boundary */
|
|
u_char dummy1[2];
|
|
u_char host_stat;
|
|
u_char target_stat;
|
|
/*------------------------------------longword boundary */
|
|
u_char target;
|
|
u_char lun;
|
|
struct scsi_generic scsi_cmd;
|
|
u_char dummy2[1];
|
|
u_char link_id;
|
|
/*------------------------------------longword boundary */
|
|
physaddr link_addr;
|
|
/*------------------------------------longword boundary */
|
|
physaddr sense_ptr;
|
|
/*-----end of HW fields-----------------------longword boundary */
|
|
struct scsi_sense_data scsi_sense;
|
|
/*------------------------------------longword boundary */
|
|
struct bt_scat_gath scat_gath[BT_NSEG];
|
|
/*------------------------------------longword boundary */
|
|
TAILQ_ENTRY(bt_ccb) chain;
|
|
struct bt_ccb *nexthash;
|
|
long hashkey;
|
|
struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
|
|
int flags;
|
|
#define CCB_FREE 0
|
|
#define CCB_ACTIVE 1
|
|
#define CCB_ABORTED 2
|
|
struct bt_mbx_out *mbx; /* pointer to mail box */
|
|
};
|
|
|
|
/*
|
|
* opcode fields
|
|
*/
|
|
#define BT_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */
|
|
#define BT_TARGET_CCB 0x01 /* SCSI Target CCB */
|
|
#define BT_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather */
|
|
#define BT_RESET_CCB 0x81 /* SCSI Bus reset */
|
|
|
|
/*
|
|
* bt_ccb.host_stat values
|
|
*/
|
|
#define BT_OK 0x00 /* cmd ok */
|
|
#define BT_LINK_OK 0x0a /* Link cmd ok */
|
|
#define BT_LINK_IT 0x0b /* Link cmd ok + int */
|
|
#define BT_SEL_TIMEOUT 0x11 /* Selection time out */
|
|
#define BT_OVER_UNDER 0x12 /* Data over/under run */
|
|
#define BT_BUS_FREE 0x13 /* Bus dropped at unexpected time */
|
|
#define BT_INV_BUS 0x14 /* Invalid bus phase/sequence */
|
|
#define BT_BAD_MBO 0x15 /* Incorrect MBO cmd */
|
|
#define BT_BAD_CCB 0x16 /* Incorrect ccb opcode */
|
|
#define BT_BAD_LINK 0x17 /* Not same values of LUN for links */
|
|
#define BT_INV_TARGET 0x18 /* Invalid target direction */
|
|
#define BT_CCB_DUP 0x19 /* Duplicate CCB received */
|
|
#define BT_INV_CCB 0x1a /* Invalid CCB or segment list */
|
|
#define BT_ABORTED 42 /* pseudo value from driver */
|
|
|
|
struct bt_extended_inquire {
|
|
u_char bus_type; /* Type of bus connected to */
|
|
#define BT_BUS_TYPE_24BIT 'A' /* ISA bus */
|
|
#define BT_BUS_TYPE_32BIT 'E' /* EISA/VLB/PCI bus */
|
|
#define BT_BUS_TYPE_MCA 'M' /* MicroChannel bus */
|
|
u_char bios_address; /* Address of adapter BIOS */
|
|
u_short max_segment; /* ? */
|
|
};
|
|
|
|
struct bt_boardID {
|
|
u_char board_type;
|
|
u_char custom_feture;
|
|
char firm_revision;
|
|
u_char firm_version;
|
|
};
|
|
|
|
struct bt_setup {
|
|
u_char sync_neg:1;
|
|
u_char parity:1;
|
|
u_char :6;
|
|
u_char speed;
|
|
u_char bus_on;
|
|
u_char bus_off;
|
|
u_char num_mbx;
|
|
u_char mbx[3]; /*XXX */
|
|
/* doesn't make sense with 32bit addresses */
|
|
struct {
|
|
u_char offset:4;
|
|
u_char period:3;
|
|
u_char valid:1;
|
|
} sync[8];
|
|
u_char disc_sts;
|
|
};
|
|
|
|
struct bt_config {
|
|
u_char chan;
|
|
u_char intr;
|
|
u_char scsi_dev:3;
|
|
u_char :5;
|
|
};
|
|
|
|
#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)
|
|
|
|
struct bt_softc {
|
|
struct device sc_dev;
|
|
struct isadev sc_id;
|
|
void *sc_ih;
|
|
|
|
int sc_iobase;
|
|
int sc_irq, bt_drq;
|
|
|
|
struct bt_mbx bt_mbx; /* all our mailboxes */
|
|
struct bt_ccb *ccbhash[CCB_HASH_SIZE];
|
|
TAILQ_HEAD(, bt_ccb) free_ccb;
|
|
int numccbs;
|
|
int bt_scsi_dev; /* adapters scsi id */
|
|
struct scsi_link sc_link; /* prototype for devs */
|
|
};
|
|
|
|
/***********debug values *************/
|
|
#define BT_SHOWCCBS 0x01
|
|
#define BT_SHOWINTS 0x02
|
|
#define BT_SHOWCMDS 0x04
|
|
#define BT_SHOWMISC 0x08
|
|
int bt_debug = 0;
|
|
|
|
int bt_cmd(); /* XXX must be varargs to prototype */
|
|
int btintr __P((void *));
|
|
void bt_free_ccb __P((struct bt_softc *, struct bt_ccb *, int));
|
|
struct bt_ccb *bt_get_ccb __P((struct bt_softc *, int));
|
|
struct bt_ccb *bt_ccb_phys_kv __P((struct bt_softc *, u_long));
|
|
struct bt_mbx_out *bt_send_mbo __P((struct bt_softc *, int, struct bt_ccb *));
|
|
void bt_done __P((struct bt_softc *, struct bt_ccb *));
|
|
int bt_find __P((struct bt_softc *));
|
|
void bt_init __P((struct bt_softc *));
|
|
void bt_inquire_setup_information __P((struct bt_softc *));
|
|
u_int btminphys __P((struct buf *));
|
|
int bt_scsi_cmd __P((struct scsi_xfer *));
|
|
int bt_poll __P((struct bt_softc *, struct scsi_xfer *, int));
|
|
void bt_timeout __P((void *arg));
|
|
#ifdef UTEST
|
|
void bt_print_ccb __P((struct bt_ccb *));
|
|
void bt_print_active_ccbs __P((struct bt_softc *));
|
|
#endif
|
|
|
|
struct scsi_adapter bt_switch = {
|
|
bt_scsi_cmd,
|
|
btminphys,
|
|
0,
|
|
0,
|
|
};
|
|
|
|
/* the below structure is so we have a default dev struct for out link struct */
|
|
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 */
|
|
};
|
|
|
|
int btprobe __P((struct device *, void *, void *));
|
|
void btattach __P((struct device *, struct device *, void *));
|
|
|
|
struct cfdriver btcd = {
|
|
NULL, "bt", btprobe, btattach, DV_DULL, sizeof(struct bt_softc)
|
|
};
|
|
|
|
#define BT_RESET_TIMEOUT 1000
|
|
|
|
/*
|
|
* bt_cmd(bt, 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.
|
|
*/
|
|
int
|
|
bt_cmd(bt, icnt, ocnt, wait, retval, opcode, args)
|
|
struct bt_softc *bt;
|
|
int icnt, ocnt, wait;
|
|
u_char *retval;
|
|
unsigned opcode;
|
|
u_char args;
|
|
{
|
|
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) {
|
|
printf("%s: bt_cmd, host not idle(0x%x)\n",
|
|
bt->sc_dev.dv_xname, 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) {
|
|
printf("%s: bt_cmd, cmd/data port full\n",
|
|
bt->sc_dev.dv_xname);
|
|
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) {
|
|
printf("bt%d: bt_cmd, cmd/data port empty %d\n",
|
|
bt->sc_dev.dv_xname, 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) {
|
|
printf("%s: bt_cmd, host not finished(0x%x)\n",
|
|
bt->sc_dev.dv_xname, 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
|
|
*/
|
|
int
|
|
btprobe(parent, match, aux)
|
|
struct device *parent;
|
|
void *match, *aux;
|
|
{
|
|
struct bt_softc *bt = match;
|
|
register struct isa_attach_args *ia = aux;
|
|
|
|
#ifdef NEWCONFIG
|
|
if (ia->ia_iobase == IOBASEUNK)
|
|
return 0;
|
|
#endif
|
|
|
|
bt->sc_iobase = ia->ia_iobase;
|
|
|
|
/*
|
|
* Try initialise a unit at this location
|
|
* sets up dma and bus speed, loads bt->sc_irq
|
|
*/
|
|
if (bt_find(bt) != 0)
|
|
return 0;
|
|
|
|
if (ia->ia_irq != IRQUNK) {
|
|
if (ia->ia_irq != bt->sc_irq) {
|
|
printf("%s: irq mismatch; kernel configured %d != board configured %d\n",
|
|
bt->sc_dev.dv_xname, ia->ia_irq, bt->sc_irq);
|
|
return 0;
|
|
}
|
|
} else
|
|
ia->ia_irq = bt->sc_irq;
|
|
|
|
if (ia->ia_drq != DRQUNK) {
|
|
if (ia->ia_drq != bt->bt_drq) {
|
|
printf("%s: drq mismatch; kernel configured %d != board configured %d\n",
|
|
bt->sc_dev.dv_xname, ia->ia_drq, bt->bt_drq);
|
|
return 0;
|
|
}
|
|
} else
|
|
ia->ia_drq = bt->bt_drq;
|
|
|
|
ia->ia_msize = 0;
|
|
ia->ia_iosize = 4;
|
|
return 1;
|
|
}
|
|
|
|
btprint()
|
|
{
|
|
|
|
}
|
|
|
|
/*
|
|
* Attach all the sub-devices we can find
|
|
*/
|
|
void
|
|
btattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct isa_attach_args *ia = aux;
|
|
struct bt_softc *bt = (void *)self;
|
|
|
|
if (ia->ia_drq != DRQUNK)
|
|
isa_dmacascade(ia->ia_drq);
|
|
|
|
bt_init(bt);
|
|
TAILQ_INIT(&bt->free_ccb);
|
|
|
|
/*
|
|
* fill in the prototype scsi_link.
|
|
*/
|
|
bt->sc_link.adapter_softc = bt;
|
|
bt->sc_link.adapter_target = bt->bt_scsi_dev;
|
|
bt->sc_link.adapter = &bt_switch;
|
|
bt->sc_link.device = &bt_dev;
|
|
bt->sc_link.openings = 2;
|
|
|
|
printf("\n");
|
|
|
|
#ifdef NEWCONFIG
|
|
isa_establish(&bt->sc_id, &bt->sc_dev);
|
|
#endif
|
|
bt->sc_ih = isa_intr_establish(ia->ia_irq, ISA_IST_EDGE, ISA_IPL_BIO,
|
|
btintr, bt);
|
|
|
|
/*
|
|
* ask the adapter what subunits are present
|
|
*/
|
|
config_found(self, &bt->sc_link, btprint);
|
|
}
|
|
|
|
/*
|
|
* Catch an interrupt from the adaptor
|
|
*/
|
|
int
|
|
btintr(arg)
|
|
void *arg;
|
|
{
|
|
struct bt_softc *bt = arg;
|
|
struct bt_mbx_in *wmbi;
|
|
struct bt_mbx *wmbx;
|
|
struct bt_ccb *ccb;
|
|
u_char stat;
|
|
int i;
|
|
int found = 0;
|
|
|
|
#ifdef BTDEBUG
|
|
printf("%s: btintr ", bt->sc_dev.dv_xname);
|
|
#endif /* BTDEBUG */
|
|
|
|
/*
|
|
* First acknowlege the interrupt, Then if it's
|
|
* not telling about a completed operation
|
|
* just return.
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if ((stat & (BT_MBOA | BT_MBIF)) == 0) {
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return -1; /* XXX */
|
|
}
|
|
|
|
/* Mail box out empty? */
|
|
if (stat & BT_MBOA) {
|
|
/* Disable MBO available interrupt. */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
for (i = 100000; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
delay(10);
|
|
}
|
|
if (!i) {
|
|
printf("%s: btintr, cmd/data port full\n",
|
|
bt->sc_dev.dv_xname);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return 1;
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x00); /* Disable */
|
|
wakeup(&bt->bt_mbx);
|
|
}
|
|
|
|
/* Mail box in full? */
|
|
if ((stat & BT_MBIF) == 0)
|
|
return 1;
|
|
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("%s: BAD CCB ADDR!\n", bt->sc_dev.dv_xname);
|
|
continue;
|
|
}
|
|
found++;
|
|
switch (wmbi->stat) {
|
|
case BT_MBI_OK:
|
|
case BT_MBI_ERROR:
|
|
break;
|
|
|
|
case BT_MBI_ABORT:
|
|
ccb->host_stat = BT_ABORTED;
|
|
break;
|
|
|
|
case BT_MBI_UNKNOWN:
|
|
ccb = 0;
|
|
break;
|
|
|
|
default:
|
|
panic("Impossible mbxi status");
|
|
}
|
|
#ifdef BTDEBUG
|
|
if (bt_debug && ccb) {
|
|
u_char *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, ",
|
|
wmbi->stat, wmbi);
|
|
printf("ccb addr = 0x%x\n", ccb);
|
|
}
|
|
#endif /* BTDEBUG */
|
|
wmbi->stat = BT_MBI_FREE;
|
|
if (ccb) {
|
|
untimeout(bt_timeout, ccb);
|
|
bt_done(bt, ccb);
|
|
}
|
|
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) {
|
|
#if 0
|
|
printf("%s: mbi interrupt with no full mailboxes\n",
|
|
bt->sc_dev.dv_xname);
|
|
#endif
|
|
} else {
|
|
found = 0;
|
|
goto AGAIN;
|
|
}
|
|
}
|
|
wmbx->tmbi = wmbi;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* A ccb is put onto the free list.
|
|
*/
|
|
void
|
|
bt_free_ccb(bt, ccb, flags)
|
|
struct bt_softc *bt;
|
|
struct bt_ccb *ccb;
|
|
int flags;
|
|
{
|
|
int opri;
|
|
|
|
opri = splbio();
|
|
|
|
ccb->flags = CCB_FREE;
|
|
TAILQ_INSERT_HEAD(&bt->free_ccb, ccb, chain);
|
|
|
|
/*
|
|
* If there were none, wake anybody waiting for one to come free,
|
|
* starting with queued entries.
|
|
*/
|
|
if (!ccb->chain.tqe_next)
|
|
wakeup(&bt->free_ccb);
|
|
|
|
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.
|
|
*/
|
|
struct bt_ccb *
|
|
bt_get_ccb(bt, flags)
|
|
struct bt_softc *bt;
|
|
int flags;
|
|
{
|
|
int opri;
|
|
struct bt_ccb *ccb;
|
|
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.
|
|
*/
|
|
for (;;) {
|
|
ccb = bt->free_ccb.tqh_first;
|
|
if (ccb) {
|
|
TAILQ_REMOVE(&bt->free_ccb, ccb, chain);
|
|
break;
|
|
}
|
|
if (bt->numccbs < BT_CCB_MAX) {
|
|
if (ccb = (struct bt_ccb *) malloc(sizeof(struct bt_ccb),
|
|
M_TEMP, M_NOWAIT)) {
|
|
bzero(ccb, sizeof(struct bt_ccb));
|
|
bt->numccbs++;
|
|
/*
|
|
* put in the phystokv hash table
|
|
* Never gets taken out.
|
|
*/
|
|
ccb->hashkey = KVTOPHYS(ccb);
|
|
hashnum = CCB_HASH(ccb->hashkey);
|
|
ccb->nexthash = bt->ccbhash[hashnum];
|
|
bt->ccbhash[hashnum] = ccb;
|
|
} else {
|
|
printf("%s: can't malloc ccb\n",
|
|
bt->sc_dev.dv_xname);
|
|
}
|
|
break;
|
|
}
|
|
if ((flags & SCSI_NOSLEEP) != 0)
|
|
break;
|
|
tsleep(&bt->free_ccb, PRIBIO, "btccb", 0);
|
|
}
|
|
|
|
splx(opri);
|
|
return ccb;
|
|
}
|
|
|
|
/*
|
|
* given a physical address, find the ccb that
|
|
* it corresponds to:
|
|
*/
|
|
struct bt_ccb *
|
|
bt_ccb_phys_kv(bt, ccb_phys)
|
|
struct bt_softc *bt;
|
|
u_long ccb_phys;
|
|
{
|
|
int hashnum = CCB_HASH(ccb_phys);
|
|
struct bt_ccb *ccb = bt->ccbhash[hashnum];
|
|
|
|
while (ccb) {
|
|
if (ccb->hashkey == ccb_phys)
|
|
break;
|
|
ccb = ccb->nexthash;
|
|
}
|
|
return ccb;
|
|
}
|
|
|
|
/*
|
|
* Get a mbo and send the ccb.
|
|
*/
|
|
struct bt_mbx_out *
|
|
bt_send_mbo(bt, cmd, ccb)
|
|
struct bt_softc *bt;
|
|
int cmd;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct bt_mbx_out *wmbo; /* Mail Box Out pointer */
|
|
struct bt_mbx *wmbx; /* Mail Box pointer specified unit */
|
|
int i;
|
|
|
|
/* Get the target out mail box pointer and increment. */
|
|
wmbx = &bt->bt_mbx;
|
|
wmbo = wmbx->tmbo;
|
|
bt_nextmbx(wmbx->tmbo, wmbx, mbo);
|
|
|
|
/*
|
|
* 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) {
|
|
/* Enable mbo available interrupt. */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
for (i = 100000; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
delay(10);
|
|
}
|
|
if (!i) {
|
|
printf("%s: bt_send_mbo, cmd/data port full\n",
|
|
bt->sc_dev.dv_xname);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return NULL;
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x01); /* Enable */
|
|
tsleep(wmbx, PRIBIO, "btsnd", 0);/*XXX can't do this */
|
|
}
|
|
|
|
/* Link ccb to mbo. */
|
|
wmbo->ccb_addr = KVTOPHYS(ccb);
|
|
ccb->mbx = wmbo;
|
|
wmbo->cmd = cmd;
|
|
|
|
/* Send it! */
|
|
outb(BT_CMD_DATA_PORT, BT_START_SCSI);
|
|
|
|
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
|
|
*/
|
|
void
|
|
bt_done(bt, ccb)
|
|
struct bt_softc *bt;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct scsi_sense_data *s1, *s2;
|
|
struct scsi_xfer *xs = ccb->xs;
|
|
|
|
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 ((xs->flags & INUSE) == 0) {
|
|
printf("%s: exiting but not in use!\n", bt->sc_dev.dv_xname);
|
|
Debugger();
|
|
}
|
|
if (xs->error == XS_NOERROR) {
|
|
if (ccb->host_stat != BT_OK) {
|
|
switch (ccb->host_stat) {
|
|
case BT_ABORTED:
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
break;
|
|
case BT_SEL_TIMEOUT: /* No response */
|
|
xs->error = XS_SELTIMEOUT;
|
|
break;
|
|
default: /* Other scsi protocol messes */
|
|
printf("%s: host_stat %x\n",
|
|
bt->sc_dev.dv_xname, ccb->host_stat);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
} else if (ccb->target_stat != SCSI_OK) {
|
|
switch (ccb->target_stat) {
|
|
case SCSI_CHECK:
|
|
s1 = &ccb->scsi_sense;
|
|
s2 = &xs->sense;
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case SCSI_BUSY:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
printf("%s: target_stat %x\n",
|
|
bt->sc_dev.dv_xname, ccb->target_stat);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
} else
|
|
xs->resid = 0;
|
|
}
|
|
xs->flags |= ITSDONE;
|
|
bt_free_ccb(bt, ccb, xs->flags);
|
|
scsi_done(xs);
|
|
}
|
|
|
|
/*
|
|
* Find the board and find it's irq/drq
|
|
*/
|
|
int
|
|
bt_find(bt)
|
|
struct bt_softc *bt;
|
|
{
|
|
u_char ad[4];
|
|
volatile int i, sts;
|
|
struct bt_extended_inquire info;
|
|
struct bt_config conf;
|
|
|
|
/*
|
|
* 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);
|
|
|
|
for (i = BT_RESET_TIMEOUT; i; i--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts == (BT_IDLE | BT_INIT))
|
|
break;
|
|
delay(1000);
|
|
}
|
|
if (!i) {
|
|
#ifdef UTEST
|
|
printf("bt_find: No answer from bt742a board\n");
|
|
#endif
|
|
return ENXIO;
|
|
}
|
|
|
|
/*
|
|
* Check that we actually know how to use this board.
|
|
*/
|
|
delay(1000);
|
|
bt_cmd(bt, 1, sizeof(info), 0, &info, BT_INQUIRE_EXTENDED, sizeof(info));
|
|
switch (info.bus_type) {
|
|
case BT_BUS_TYPE_24BIT:
|
|
/* XXXX How do we avoid conflicting with the aha1542 probe? */
|
|
case BT_BUS_TYPE_32BIT:
|
|
break;
|
|
case BT_BUS_TYPE_MCA:
|
|
/* We don't grok MicroChannel (yet). */
|
|
return EINVAL;
|
|
default:
|
|
printf("%s: illegal bus type %c\n", bt->sc_dev.dv_xname,
|
|
info.bus_type);
|
|
return EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Assume we have a board at this stage setup dma channel from
|
|
* jumpers and save int level
|
|
*/
|
|
delay(1000);
|
|
bt_cmd(bt, 0, sizeof(conf), 0, &conf, BT_CONF_GET);
|
|
switch (conf.chan) {
|
|
case EISADMA:
|
|
bt->bt_drq = DRQUNK;
|
|
break;
|
|
case CHAN0:
|
|
bt->bt_drq = 0;
|
|
break;
|
|
case CHAN5:
|
|
bt->bt_drq = 5;
|
|
break;
|
|
case CHAN6:
|
|
bt->bt_drq = 6;
|
|
break;
|
|
case CHAN7:
|
|
bt->bt_drq = 7;
|
|
break;
|
|
default:
|
|
printf("%s: illegal dma setting %x\n", bt->sc_dev.dv_xname,
|
|
conf.chan);
|
|
return EIO;
|
|
}
|
|
|
|
switch (conf.intr) {
|
|
case INT9:
|
|
bt->sc_irq = 9;
|
|
break;
|
|
case INT10:
|
|
bt->sc_irq = 10;
|
|
break;
|
|
case INT11:
|
|
bt->sc_irq = 11;
|
|
break;
|
|
case INT12:
|
|
bt->sc_irq = 12;
|
|
break;
|
|
case INT14:
|
|
bt->sc_irq = 14;
|
|
break;
|
|
case INT15:
|
|
bt->sc_irq = 15;
|
|
break;
|
|
default:
|
|
printf("%s: illegal int setting %x\n", bt->sc_dev.dv_xname,
|
|
conf.intr);
|
|
return EIO;
|
|
}
|
|
|
|
/* who are we on the scsi bus? */
|
|
bt->bt_scsi_dev = conf.scsi_dev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Start the board, ready for normal operation
|
|
*/
|
|
void
|
|
bt_init(bt)
|
|
struct bt_softc *bt;
|
|
{
|
|
u_char ad[4];
|
|
int i;
|
|
|
|
/*
|
|
* Initialize mail box
|
|
*/
|
|
*((physaddr *)ad) = KVTOPHYS(&bt->bt_mbx);
|
|
|
|
bt_cmd(bt, 5, 0, 0, 0, BT_MBX_INIT_EXTENDED, BT_MBX_SIZE,
|
|
ad[0], ad[1], ad[2], ad[3]);
|
|
|
|
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(bt);
|
|
}
|
|
|
|
void
|
|
bt_inquire_setup_information(bt)
|
|
struct bt_softc *bt;
|
|
{
|
|
struct bt_boardID bID;
|
|
char dummy[8];
|
|
struct bt_setup setup;
|
|
int i;
|
|
|
|
/* Inquire Board ID to Bt742 for firmware version */
|
|
bt_cmd(bt, 0, sizeof(bID), 0, &bID, BT_INQUIRE);
|
|
printf(": version %c.%c, ", bID.firm_revision, bID.firm_version);
|
|
|
|
if (bID.firm_revision != '2') { /* XXXX */
|
|
/* Enable round-robin scheme - appeared at firmware rev. 3.31 */
|
|
bt_cmd(bt, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_ENABLE);
|
|
}
|
|
|
|
/* Inquire Installed Devices (to force synchronous negotiation) */
|
|
bt_cmd(bt, 0, sizeof(dummy), 10, dummy, BT_DEV_GET);
|
|
|
|
/* Obtain setup information from Bt742. */
|
|
bt_cmd(bt, 1, sizeof(setup), 0, &setup, BT_SETUP_GET, sizeof(setup));
|
|
|
|
printf("%s, %s, %d mbxs",
|
|
setup.sync_neg ? "sync" : "async",
|
|
setup.parity ? "parity" : "no parity",
|
|
setup.num_mbx);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if (!setup.sync[i].valid ||
|
|
(!setup.sync[i].offset && !setup.sync[i].period))
|
|
continue;
|
|
printf("\n%s targ %d: sync, offset %d, period %dnsec",
|
|
bt->sc_dev.dv_xname, i,
|
|
setup.sync[i].offset, setup.sync[i].period * 50 + 200);
|
|
}
|
|
}
|
|
|
|
u_int
|
|
btminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
|
|
if (bp->b_bcount > ((BT_NSEG - 1) << PGSHIFT))
|
|
bp->b_bcount = ((BT_NSEG - 1) << PGSHIFT);
|
|
return (minphys(bp));
|
|
}
|
|
|
|
/*
|
|
* start a scsi operation given the command and the data address. Also needs
|
|
* the unit, target and lu.
|
|
*/
|
|
int
|
|
bt_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct scsi_link *sc_link = xs->sc_link;
|
|
struct bt_softc *bt = sc_link->adapter_softc;
|
|
struct bt_ccb *ccb;
|
|
struct bt_scat_gath *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int thiskv;
|
|
physaddr thisphys, nextphys;
|
|
int bytes_this_seg, bytes_this_page, datalen, flags;
|
|
struct iovec *iovp;
|
|
struct bt_mbx_out *mbo;
|
|
int s;
|
|
|
|
SC_DEBUG(sc_link, SDEV_DB2, ("bt_scsi_cmd\n"));
|
|
/*
|
|
* get a ccb 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|INUSE)) != INUSE) {
|
|
printf("%s: done or not in use?\n", bt->sc_dev.dv_xname);
|
|
xs->flags &= ~ITSDONE;
|
|
xs->flags |= INUSE;
|
|
}
|
|
if ((ccb = bt_get_ccb(bt, flags)) == NULL) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return TRY_AGAIN_LATER;
|
|
}
|
|
ccb->flags = CCB_ACTIVE;
|
|
ccb->xs = xs;
|
|
|
|
/*
|
|
* Put all the arguments for the xfer in the ccb
|
|
*/
|
|
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->data_out = 0;
|
|
ccb->data_in = 0;
|
|
ccb->target = sc_link->target;
|
|
ccb->lun = sc_link->lun;
|
|
ccb->scsi_cmd_length = xs->cmdlen;
|
|
ccb->sense_ptr = KVTOPHYS(&ccb->scsi_sense);
|
|
ccb->req_sense_length = sizeof(ccb->scsi_sense);
|
|
ccb->host_stat = 0x00;
|
|
ccb->target_stat = 0x00;
|
|
|
|
if (xs->datalen && (flags & SCSI_RESET) == 0) {
|
|
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;
|
|
sg->seg_len = iovp->iov_len;
|
|
xs->datalen += iovp->iov_len;
|
|
SC_DEBUGN(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(sc_link, SDEV_DB4,
|
|
("%d @0x%x:- ", 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(sc_link, SDEV_DB4, ("0x%x", thisphys));
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while (datalen && thisphys == nextphys) {
|
|
/*
|
|
* This page is contiguous (physically)
|
|
* with the the last, just extend the
|
|
* length
|
|
*/
|
|
/* how far to the end of the page */
|
|
nextphys = (thisphys & ~PGOFSET) + NBPG;
|
|
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 & ~PGOFSET) + NBPG;
|
|
if (datalen)
|
|
thisphys = KVTOPHYS(thiskv);
|
|
}
|
|
/*
|
|
* next page isn't contiguous, finish the seg
|
|
*/
|
|
SC_DEBUGN(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(sc_link, SDEV_DB4, ("\n"));
|
|
if (datalen) {
|
|
/*
|
|
* there's still data, must have run out of segs!
|
|
*/
|
|
printf("%s: bt_scsi_cmd, more than %d dma segs\n",
|
|
bt->sc_dev.dv_xname, BT_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(bt, ccb, flags);
|
|
return COMPLETE;
|
|
}
|
|
} 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) == 0)
|
|
bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length);
|
|
|
|
s = splbio();
|
|
|
|
if (bt_send_mbo(bt, BT_MBO_START, ccb) == NULL) {
|
|
splx(s);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(bt, ccb, flags);
|
|
return TRY_AGAIN_LATER;
|
|
}
|
|
|
|
/*
|
|
* Usually return SUCCESSFULLY QUEUED
|
|
*/
|
|
SC_DEBUG(sc_link, SDEV_DB3, ("cmd_sent\n"));
|
|
if ((flags & SCSI_POLL) == 0) {
|
|
timeout(bt_timeout, ccb, (xs->timeout * hz) / 1000);
|
|
splx(s);
|
|
return SUCCESSFULLY_QUEUED;
|
|
}
|
|
|
|
splx(s);
|
|
|
|
/*
|
|
* If we can't use interrupts, poll on completion
|
|
*/
|
|
if (bt_poll(bt, xs, xs->timeout)) {
|
|
bt_timeout(ccb);
|
|
if (bt_poll(bt, xs, 2000))
|
|
bt_timeout(ccb);
|
|
}
|
|
return COMPLETE;
|
|
}
|
|
|
|
/*
|
|
* Poll a particular unit, looking for a particular xs
|
|
*/
|
|
int
|
|
bt_poll(bt, xs, count)
|
|
struct bt_softc *bt;
|
|
struct scsi_xfer *xs;
|
|
int count;
|
|
{
|
|
|
|
/* timeouts are in msec, so we loop in 1000 usec cycles */
|
|
while (count) {
|
|
/*
|
|
* If we had interrupts enabled, would we
|
|
* have got an interrupt?
|
|
*/
|
|
if (inb(BT_INTR_PORT) & BT_ANY_INTR)
|
|
btintr(bt);
|
|
if (xs->flags & ITSDONE)
|
|
return 0;
|
|
delay(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
bt_timeout(arg)
|
|
void *arg;
|
|
{
|
|
struct bt_ccb *ccb = arg;
|
|
struct scsi_xfer *xs = ccb->xs;
|
|
struct scsi_link *sc_link = xs->sc_link;
|
|
struct bt_softc *bt = sc_link->adapter_softc;
|
|
int s;
|
|
|
|
sc_print_addr(sc_link);
|
|
printf("timed out");
|
|
|
|
s = splbio();
|
|
|
|
/*
|
|
* 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("%s: not taking commands!\n", bt->sc_dev.dv_xname);
|
|
Debugger();
|
|
}
|
|
|
|
/*
|
|
* 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(" AGAIN\n");
|
|
ccb->xs->retries = 0;
|
|
bt_done(bt, ccb);
|
|
} else {
|
|
/* abort the operation that has timed out */
|
|
printf("\n");
|
|
ccb->xs->error = XS_TIMEOUT;
|
|
ccb->flags = CCB_ABORTED;
|
|
bt_send_mbo(bt, BT_MBO_ABORT, ccb);
|
|
/* 2 secs for the abort */
|
|
if ((xs->flags & SCSI_POLL) == 0)
|
|
timeout(bt_timeout, ccb, 2 * hz);
|
|
}
|
|
|
|
splx(s);
|
|
}
|
|
|
|
#ifdef UTEST
|
|
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);
|
|
}
|
|
|
|
void
|
|
bt_print_active_ccbs(bt)
|
|
struct bt_softc *bt;
|
|
{
|
|
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 */
|