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Diffstat (limited to 'sys/i386/isa/bt742a.c')
-rw-r--r--sys/i386/isa/bt742a.c1764
1 files changed, 0 insertions, 1764 deletions
diff --git a/sys/i386/isa/bt742a.c b/sys/i386/isa/bt742a.c
deleted file mode 100644
index ebc69410845f..000000000000
--- a/sys/i386/isa/bt742a.c
+++ /dev/null
@@ -1,1764 +0,0 @@
-/*
- * 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.
- *
- * $Id: bt742a.c,v 1.47 1995/12/10 13:38:22 phk Exp $
- */
-
-/*
- * Bulogic/Bustek 32 bit Addressing Mode SCSI driver.
- *
- * NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode.
- * 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version
- * has broken busmaster for handling 32 bit addressing on H/W bus
- * side.
- *
- * 3. Extended probing still needs confirmation from our user base, due
- * to several H/W and firmware dependencies. If you have a problem
- * with extended probing, please contact 'amurai@spec.co.jp'
- *
- * amurai@spec.co.jp 94/6/16
- */
-
-/*
- * bt742a SCSI driver
- */
-
-#include <sys/types.h>
-
-#ifdef KERNEL /* don't laugh.. it compiles to a program too.. look */
-#include "bt.h"
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/sysctl.h>
-#include <sys/errno.h>
-#include <sys/ioctl.h>
-#include <sys/malloc.h>
-#include <sys/buf.h>
-#include <sys/proc.h>
-#endif /* KERNEL */
-
-#include <machine/clock.h>
-
-#include <vm/vm.h>
-#include <vm/vm_param.h>
-#include <vm/pmap.h>
-
-#include <i386/isa/isa_device.h>
-#include <scsi/scsi_all.h>
-#include <scsi/scsiconf.h>
-#include <sys/devconf.h>
-
-#ifdef KERNEL
-#include <sys/kernel.h>
-#else /*KERNEL */
-#define NBT 1
-#endif /*KERNEL */
-
-typedef unsigned long int physaddr;
-
-/*
- * I/O Port Interface
- */
-
-#define BT_BASE bt->bt_base
-#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 */
-
-/* The following command appeared at FirmWare 3.31 */
-#define BT_ROUND_ROBIN 0x8f /* Enable/Disable(default) round robin */
-#define BT_STRICT_ROUND_ROBIN 0x00 /* Parameter value for strict mode */
-#define BT_AGRES_ROUND_ROBIN 0x01 /* Parameter value for backword comp */
-
-struct bt_cmd_buf {
- u_char byte[16];
-};
-
-/*
- * 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_data 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 32CCBs at any one time */
- /* in bt742a H/W ( Not MAX ? ) */
-#define CCB_HASH_SIZE 32 /* when we have a physical addr. for */
- /* a ccb and need to find the ccb in */
- /* space, look it up in the hash table */
-#define CCB_HASH_SHIFT 9 /* only hash on multiples of 512 */
-#define CCB_HASH(x) ((((long int)(x))>>CCB_HASH_SHIFT) % CCB_HASH_SIZE)
-
-#define bt_nextmbx( wmb, mbx, mbio ) \
- if ( (wmb) == &((mbx)->mbio[BT_MBX_SIZE - 1 ]) ) \
- (wmb) = &((mbx)->mbio[0]); \
- else \
- (wmb)++;
-
-typedef struct bt_mbx_out {
- physaddr ccb_addr;
- unsigned char dummy[3];
- unsigned char cmd;
-} BT_MBO;
-
-typedef struct bt_mbx_in {
- physaddr ccb_addr;
- unsigned char btstat;
- unsigned char sdstat;
- unsigned char dummy;
- unsigned char stat;
-} BT_MBI;
-
-struct bt_mbx {
- BT_MBO mbo[BT_MBX_SIZE];
- BT_MBI mbi[BT_MBX_SIZE];
- BT_MBO *tmbo; /* Target Mail Box out */
- BT_MBI *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 {
- unsigned long seg_len;
- physaddr seg_addr;
-};
-
-struct bt_ccb {
- unsigned char opcode;
- unsigned char:3, data_in:1, data_out:1,:3;
- unsigned char scsi_cmd_length;
- unsigned char req_sense_length;
- /*------------------------------------longword boundary */
- unsigned long data_length;
- /*------------------------------------longword boundary */
- physaddr data_addr;
- /*------------------------------------longword boundary */
- unsigned char dummy[2];
- unsigned char host_stat;
- unsigned char target_stat;
- /*------------------------------------longword boundary */
- unsigned char target;
- unsigned char lun;
- unsigned char scsi_cmd[12]; /* 12 bytes (bytes only) */
- unsigned char dummy2[1];
- unsigned char link_id;
- /*------------------------------------4 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 */
- struct bt_ccb *next;
- /*------------------------------------longword boundary */
- struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */
- /*------------------------------------longword boundary */
- struct bt_mbx_out *mbx; /* pointer to mail box */
- /*------------------------------------longword boundary */
- int flags;
-#define CCB_FREE 0
-#define CCB_ACTIVE 1
-#define CCB_ABORTED 2
- /*------------------------------------longword boundary */
- struct bt_ccb *nexthash; /* if two hash the same */
- /*------------------------------------longword boundary */
- physaddr hashkey; /*physaddr of this ccb */
- /*------------------------------------longword boundary */
-};
-
-/*
- * 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_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]; /* for backwards compatibility */
- 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 BT_INQUIRE_REV_THIRD 0x84 /* Get Adapter FirmWare version #3 */
-#define BT_INQUIRE_REV_FOURTH 0x85 /* Get Adapter FirmWare version #4 */
-
-/*
- * Determine 32bit address/Data firmware functionality from the bus type
- * Note: bt742a/747[s|d]/757/946/445s will return 'E'
- * bt542b/545s/545d will return 'A'
- * 94/05/18 amurai@spec.co.jp
- */
-#define BT_BUS_TYPE_24bit 'A' /* PC/AT 24 bit address bus type */
-#define BT_BUS_TYPE_32bit 'E' /* EISA/VLB/PCI 32 bit address bus type */
-#define BT_BUS_TYPE_MCA 'M' /* Micro chanel is ? forget it right now */
-struct bt_ext_info {
- u_char bus_type; /* Host adapter bus type */
- u_char bios_addr; /* Bios Address-Not used */
- u_short max_seg; /* Max segment List */
- u_char num_mbx; /* Number of mailbox */
- int32 mbx_base; /* mailbox base address */
- struct {
- u_char resv1:1; /* ??? */
- u_char force:1; /* ON: force sync */
- u_char maxsync:1; /* ON: 10MB/s , OFF: 5MB/s */
- u_char resv2:2; /* ??? */
- u_char sync:1; /* ON: Sync, OFF: async ONLY!! */
- 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 */
-struct bt_board_info {
- u_char id[4]; /* i.e bt742a -> '7','4','2','A' */
- u_char ver[2]; /* i.e Board Revision 'H' -> 'H', 0x00 */
-};
-
-#define BT_GET_SYNC_VALUE 0x8c /* Get Synchronous Value */
-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" ); }
-
-static 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 */
- int bt_bounce; /* should we bounce? */
- 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;
-SYSCTL_INT(_debug, OID_AUTO, bt742a_debug, CTLFLAG_RW, &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 = bt->bt_bounce ? SDEV_BOUNCE : 0;
-
- /*
- * 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] == '4' && binfo.id[1] == '4' && binfo.id[2] == '5' &&
- binfo.id[3] == 'S' ) {
- printf("bt%d: Your card cannot DMA above 16MB boundary. Bounce buffering enabled.\n", unit);
- bt->bt_bounce++;
- } else 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);
- bt->bt_bounce++;
- } 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);
- bt->bt_bounce++;
- }
-
- /*
- * 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 */
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-21 22:33:32 +0000