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Delete some references to sleep() that somehow crept in.
[unix-history] / sys / i386 / isa / ultra14f.c
/*
* Ported for use with the UltraStor 14f by Gary Close (gclose@wvnvms.wvnet.edu)
* Slight fixes to timeouts to run with the 34F
* Thanks to Julian Elischer for advice and help with this port.
*
* 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.
*
* commenced: Sun Sep 27 18:14:01 PDT 1992
* slight mod to make work with 34F as well: Wed Jun 2 18:05:48 WST 1993
*
* $Id: ultra14f.c,v 1.15 1994/01/29 10:29:14 rgrimes Exp $
*/
#include <sys/types.h>
#ifdef KERNEL /* don't laugh.. this compiles to a program too.. look */
#include <uha.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <i386/include/pio.h>
#include <i386/isa/isa_device.h>
#endif /*KERNEL */
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
/*\f */
#ifdef KERNEL
#include "ddb.h"
#else /*KERNEL */
#define NUHA 1
#endif /*KERNEL */
typedef struct {
unsigned char addr[4];
} physaddr;
typedef struct {
unsigned char len[4];
} physlen;
#define KVTOPHYS(x) vtophys(x)
#define UHA_MSCP_MAX 32 /* store up to 32MSCPs at any one time
* MAX = ?
*/
#define MSCP_HASH_SIZE 32 /* when we have a physical addr. for
* a mscp and need to find the mscp in
* space, look it up in the hash table
*/
#define MSCP_HASH_SHIFT 9 /* only hash on multiples of 512 */
#define MSCP_HASH(x) ((((long int)(x))>>MSCP_HASH_SHIFT) % MSCP_HASH_SIZE)
extern int hz;
#define UHA_NSEG 33 /* number of dma segments supported */
/************************** board definitions *******************************/
/*
* I/O Port Interface
*/
#define UHA_LMASK (0x000) /* local doorbell mask reg */
#define UHA_LINT (0x001) /* local doorbell int/stat reg */
#define UHA_SMASK (0x002) /* system doorbell mask reg */
#define UHA_SINT (0x003) /* system doorbell int/stat reg */
#define UHA_ID0 (0x004) /* product id reg 0 */
#define UHA_ID1 (0x005) /* product id reg 1 */
#define UHA_CONF1 (0x006) /* config reg 1 */
#define UHA_CONF2 (0x007) /* config reg 2 */
#define UHA_OGM0 (0x008) /* outgoing mail ptr 0 least sig */
#define UHA_OGM1 (0x009) /* outgoing mail ptr 1 least mid */
#define UHA_OGM2 (0x00a) /* outgoing mail ptr 2 most mid */
#define UHA_OGM3 (0x00b) /* outgoing mail ptr 3 most sig */
#define UHA_ICM0 (0x00c) /* incoming mail ptr 0 */
#define UHA_ICM1 (0x00d) /* incoming mail ptr 1 */
#define UHA_ICM2 (0x00e) /* incoming mail ptr 2 */
#define UHA_ICM3 (0x00f) /* incoming mail ptr 3 */
/*
* UHA_LMASK bits (read only)
*/
#define UHA_LDIE 0x80 /* local doorbell int enabled */
#define UHA_SRSTE 0x40 /* soft reset enabled */
#define UHA_ABORTEN 0x10 /* abort MSCP enabled */
#define UHA_OGMINTEN 0x01 /* outgoing mail interrupt enabled */
/*
* UHA_LINT bits (read)
*/
#define UHA_LDIP 0x80 /* local doorbell int pending */
/*
* UHA_LINT bits (write)
*/
#define UHA_ADRST 0x40 /* adapter soft reset */
#define UHA_SBRST 0x20 /* scsi bus reset */
#define UHA_ASRST 0x60 /* adapter and scsi reset */
#define UHA_ABORT 0x10 /* abort MSCP */
#define UHA_OGMINT 0x01 /* tell adapter to get mail */
/*
* UHA_SMASK bits (read)
*/
#define UHA_SINTEN 0x80 /* system doorbell interupt Enabled */
#define UHA_ABORT_COMPLETE_EN 0x10 /* abort MSCP command complete int Enabled */
#define UHA_ICM_ENABLED 0x01 /* ICM interrupt enabled */
/*
* UHA_SMASK bits (write)
*/
#define UHA_ENSINT 0x80 /* enable system doorbell interrupt */
#define UHA_EN_ABORT_COMPLETE 0x10 /* enable abort MSCP complete int */
#define UHA_ENICM 0x01 /* enable ICM interrupt */
/*
* UHA_SINT bits (read)
*/
#define UHA_SINTP 0x80 /* system doorbell int pending */
#define UHA_ABORT_SUCC 0x10 /* abort MSCP successful */
#define UHA_ABORT_FAIL 0x18 /* abort MSCP failed */
/*
* UHA_SINT bits (write)
*/
#define UHA_ABORT_ACK 0x18 /* acknowledge status and clear */
#define UHA_ICM_ACK 0x01 /* acknowledge ICM and clear */
/*
* UHA_CONF1 bits (read only)
*/
#define UHA_DMA_CH5 0x00 /* DMA channel 5 */
#define UHA_DMA_CH6 0x40 /* 6 */
#define UHA_DMA_CH7 0x80 /* 7 */
#define UHA_IRQ15 0x00 /* IRQ 15 */
#define UHA_IRQ14 0x10 /* 14 */
#define UHA_IRQ11 0x20 /* 11 */
#define UHA_IRQ10 0x30 /* 10 */
/*
* ha_status error codes
*/
#define UHA_NO_ERR 0x00 /* No error supposedly */
#define UHA_SBUS_ABORT_ERR 0x84 /* scsi bus abort error */
#define UHA_SBUS_TIMEOUT 0x91 /* scsi bus selection timeout */
#define UHA_SBUS_OVER_UNDER 0x92 /* scsi bus over/underrun */
#define UHA_BAD_SCSI_CMD 0x96 /* illegal scsi command */
#define UHA_AUTO_SENSE_ERR 0x9b /* auto request sense err */
#define UHA_SBUS_RES_ERR 0xa3 /* scsi bus reset error */
#define UHA_BAD_SG_LIST 0xff /* invalid scatter gath list */
struct uha_dma_seg {
physaddr addr;
physlen len;
};
struct mscp {
unsigned char opcode:3;
#define U14_HAC 0x01 /* host adapter command */
#define U14_TSP 0x02 /* target scsi pass through command */
#define U14_SDR 0x04 /* scsi device reset */
unsigned char xdir:2; /* xfer direction */
#define U14_SDET 0x00 /* determined by scsi command */
#define U14_SDIN 0x01 /* scsi data in */
#define U14_SDOUT 0x02 /* scsi data out */
#define U14_NODATA 0x03 /* no data xfer */
unsigned char dcn:1; /* disable disconnect for this command */
unsigned char ca:1; /* cache control */
unsigned char sgth:1; /* scatter gather flag */
unsigned char target:3;
unsigned char chan:2; /* scsi channel (always 0 for 14f) */
unsigned char lun:3;
physaddr data;
physlen datalen;
physaddr link;
unsigned char link_id;
unsigned char sg_num; /*number of scat gath segs */
/*in s-g list if sg flag is */
/*set. starts at 1, 8bytes per */
unsigned char senselen;
unsigned char cdblen;
unsigned char cdb[12];
unsigned char ha_status;
unsigned char targ_status;
physaddr sense; /* if 0 no auto sense */
/*-----------------end of hardware supported fields----------------*/
struct mscp *next; /* in free list */
struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
int flags;
#define MSCP_FREE 0
#define MSCP_ACTIVE 1
#define MSCP_ABORTED 2
struct uha_dma_seg uha_dma[UHA_NSEG];
struct scsi_sense_data mscp_sense;
struct mscp *nexthash;
long int hashkey;
};
struct uha_data {
int flags;
#define UHA_INIT 0x01;
int baseport;
struct mscp *mscphash[MSCP_HASH_SIZE];
struct mscp *free_mscp;
int our_id; /* our scsi id */
int vect;
int dma;
int nummscps;
struct scsi_link sc_link;
} *uhadata[NUHA];
int uhaprobe();
int uha_attach();
int uhaintr();
int32 uha_scsi_cmd();
void uha_timeout(caddr_t, int);
void uha_free_mscp();
int uha_abort();
void uhaminphys();
void uha_done();
u_int32 uha_adapter_info();
struct mscp *uha_mscp_phys_kv();
struct mscp *cheat;
unsigned long int scratch;
static uha_unit = 0;
#define UHA_SHOWMSCPS 0x01
#define UHA_SHOWINTS 0x02
#define UHA_SHOWCMDS 0x04
#define UHA_SHOWMISC 0x08
#define FAIL 1
#define SUCCESS 0
#define PAGESIZ 4096
#ifdef KERNEL
struct isa_driver uhadriver =
{
uhaprobe,
uha_attach,
"uha"
};
struct scsi_adapter uha_switch =
{
uha_scsi_cmd,
uhaminphys,
0,
0,
uha_adapter_info,
"uha",
0, 0
};
/* the below structure is so we have a default dev struct for out link struct */
struct scsi_device uha_dev =
{
NULL, /* Use default error handler */
NULL, /* have a queue, served by this */
NULL, /* have no async handler */
NULL, /* Use default 'done' routine */
"uha",
0,
0, 0
};
#endif /*KERNEL */
#ifndef KERNEL
main()
{
printf("uha_data is %d bytes\n", sizeof(struct uha_data));
printf("mscp is %d bytes\n", sizeof(struct mscp));
}
#else /*KERNEL*/
/*
* Function to send a command out through a mailbox
*/
void
uha_send_mbox(int unit, struct mscp *mscp)
{
struct uha_data *uha = uhadata[unit];
int port = uha->baseport;
int spincount = 100000; /* 1s should be enough */
int s = splbio();
while (--spincount) {
if ((inb(port + UHA_LINT) & UHA_LDIP) == 0)
break;
DELAY(100);
}
if (spincount == 0) {
printf("uha%d: uha_send_mbox, board not responding\n", unit);
Debugger("ultra14f");
}
outl(port + UHA_OGM0, KVTOPHYS(mscp));
outb(port + UHA_LINT, (UHA_OGMINT));
splx(s);
}
/*
* Function to send abort to 14f
*/
int
uha_abort(int unit, struct mscp *mscp)
{
struct uha_data *uha = uhadata[unit];
int port = uha->baseport;
int spincount = 100; /* 1 mSec */
int abortcount = 200000; /*2 secs */
int s = splbio();
while (--spincount) {
if ((inb(port + UHA_LINT) & UHA_LDIP) == 0)
break;
DELAY(10);
}
if (spincount == 0) {
printf("uha%d: uha_abort, board not responding\n", unit);
Debugger("ultra14f");
}
outl(port + UHA_OGM0, KVTOPHYS(mscp));
outb(port + UHA_LINT, UHA_ABORT);
while (--abortcount) {
if (inb(port + UHA_SINT) & UHA_ABORT_FAIL)
break;
DELAY(10);
}
if (abortcount == 0) {
printf("uha%d: uha_abort, board not responding\n", unit);
Debugger("ultra14f");
}
if ((inb(port + UHA_SINT) & 0x10) != 0) {
outb(port + UHA_SINT, UHA_ABORT_ACK);
splx(s);
return (1);
} else {
outb(port + UHA_SINT, UHA_ABORT_ACK);
splx(s);
return (0);
}
}
/*
* Function to poll for command completion when in poll mode.
*
* wait = timeout in msec
*/
int
uha_poll(int unit, int wait)
{
struct uha_data *uha = uhadata[unit];
int port = uha->baseport;
int stport = port + UHA_SINT;
retry:
while (--wait) {
if (inb(stport) & UHA_SINTP)
break;
DELAY(1000); /* 1 mSec per loop */
}
if (wait == 0) {
printf("uha%d: uha_poll, board not responding\n", unit);
return (EIO);
}
uhaintr(unit);
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
uhaprobe(dev)
struct isa_device *dev;
{
int unit = uha_unit;
struct uha_data *uha;
dev->id_unit = unit;
/*
* find unit and check we have that many defined
*/
if (unit >= NUHA) {
printf("uha: unit number (%d) too high\n", unit);
return (0);
}
dev->id_unit = unit;
/*
* Allocate a storage area for us
*/
if (uhadata[unit]) {
printf("uha%d: memory already allocated\n", unit);
return 0;
}
uha = malloc(sizeof(struct uha_data), M_TEMP, M_NOWAIT);
if (!uha) {
printf("uha%d: cannot malloc!\n", unit);
return 0;
}
bzero(uha, sizeof(struct uha_data));
uhadata[unit] = uha;
uha->baseport = dev->id_iobase;
/*
* Try initialise a unit at this location
* sets up dma and bus speed, loads uha->vect
*/
if (uha_init(unit) != 0) {
uhadata[unit] = NULL;
free(uha, M_TEMP);
return (0);
}
/* if it's there put in its interrupt and DRQ vectors */
dev->id_irq = (1 << uha->vect);
dev->id_drq = uha->dma;
uha_unit++;
return (16);
}
/*
* Attach all the sub-devices we can find
*/
int
uha_attach(dev)
struct isa_device *dev;
{
int unit = dev->id_unit;
struct uha_data *uha = uhadata[unit];
/*
* fill in the prototype scsi_link.
*/
uha->sc_link.adapter_unit = unit;
uha->sc_link.adapter_targ = uha->our_id;
uha->sc_link.adapter = &uha_switch;
uha->sc_link.device = &uha_dev;
/*
* ask the adapter what subunits are present
*/
scsi_attachdevs(&(uha->sc_link));
return 1;
}
/*
* Return some information to the caller about
* the adapter and it's capabilities
*/
u_int32
uha_adapter_info(unit)
int unit;
{
return (2); /* 2 outstanding requests at a time per device */
}
/*
* Catch an interrupt from the adaptor
*/
int
uhaintr(unit)
int unit;
{
struct uha_data *uha = uhadata[unit];
struct mscp *mscp;
u_char uhastat;
unsigned long int mboxval;
int port = uha->baseport;
#ifdef UHADEBUG
printf("uhaintr ");
#endif /*UHADEBUG */
while (inb(port + UHA_SINT) & UHA_SINTP) {
/*
* First get all the information and then
* acknowledge the interrupt
*/
uhastat = inb(port + UHA_SINT);
mboxval = inl(port + UHA_ICM0);
outb(port + UHA_SINT, UHA_ICM_ACK);
#ifdef UHADEBUG
printf("status = 0x%x ", uhastat);
#endif /*UHADEBUG*/
/*
* Process the completed operation
*/
mscp = uha_mscp_phys_kv(uha, mboxval);
if (!mscp) {
printf("uha: BAD MSCP RETURNED\n");
return (0); /* whatever it was, it'll timeout */
}
untimeout(uha_timeout, (caddr_t)mscp);
uha_done(unit, mscp);
}
return (1);
}
/*
* We have a mscp which has been processed by the adaptor, now we look to see
* how the operation went.
*/
void
uha_done(unit, mscp)
int unit;
struct mscp *mscp;
{
struct uha_data *uha = uhadata[unit];
struct scsi_sense_data *s1, *s2;
struct scsi_xfer *xs = mscp->xs;
SC_DEBUG(xs->sc_link, SDEV_DB2, ("uha_done\n"));
/*
* Otherwise, put the results of the operation
* into the xfer and call whoever started it
*/
if ((mscp->ha_status == UHA_NO_ERR) || (xs->flags & SCSI_ERR_OK)) { /* All went correctly OR errors expected */
xs->resid = 0;
xs->error = 0;
} else {
s1 = &(mscp->mscp_sense);
s2 = &(xs->sense);
if (mscp->ha_status != UHA_NO_ERR) {
switch (mscp->ha_status) {
case UHA_SBUS_TIMEOUT: /* No response */
SC_DEBUG(xs->sc_link, SDEV_DB3,
("timeout reported back\n"));
xs->error = XS_TIMEOUT;
break;
case UHA_SBUS_OVER_UNDER:
SC_DEBUG(xs->sc_link, SDEV_DB3,
("scsi bus xfer over/underrun\n"));
xs->error = XS_DRIVER_STUFFUP;
break;
case UHA_BAD_SG_LIST:
SC_DEBUG(xs->sc_link, SDEV_DB3,
("bad sg list reported back\n"));
xs->error = XS_DRIVER_STUFFUP;
break;
default: /* Other scsi protocol messes */
xs->error = XS_DRIVER_STUFFUP;
SC_DEBUG(xs->sc_link, SDEV_DB3,
("unexpected ha_status: %x\n",
mscp->ha_status));
}
} else {
if (mscp->targ_status != 0)
/*
* I have no information for any possible value of target status field
* other than 0 means no error!! So I guess any error is unexpected in that
* event!!
*/
{
SC_DEBUG(xs->sc_link, SDEV_DB3,
("unexpected targ_status: %x\n",
mscp->targ_status));
xs->error = XS_DRIVER_STUFFUP;
}
}
}
done:
xs->flags |= ITSDONE;
uha_free_mscp(unit, mscp, xs->flags);
scsi_done(xs);
}
/*
* A mscp (and hence a mbx-out) is put onto the free list.
*/
void
uha_free_mscp(unit, mscp, flags)
int unit;
struct mscp *mscp;
int flags;
{
struct uha_data *uha = uhadata[unit];
unsigned int opri = 0;
if (!(flags & SCSI_NOMASK))
opri = splbio();
mscp->next = uha->free_mscp;
uha->free_mscp = mscp;
mscp->flags = MSCP_FREE;
/*
* If there were none, wake abybody waiting for
* one to come free, starting with queued entries
*/
if (!mscp->next) {
wakeup((caddr_t)&uha->free_mscp);
}
if (!(flags & SCSI_NOMASK))
splx(opri);
}
/*
* Get a free mscp
*
* 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 mscp *
uha_get_mscp(unit, flags)
int unit, flags;
{
struct uha_data *uha = uhadata[unit];
unsigned opri = 0;
struct mscp *mscpp;
int hashnum;
if (!(flags & SCSI_NOMASK))
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 (!(mscpp = uha->free_mscp)) {
if (uha->nummscps < UHA_MSCP_MAX) {
if (mscpp = (struct mscp *)malloc(sizeof(struct mscp),
M_TEMP,
M_NOWAIT)) {
bzero(mscpp, sizeof(struct mscp));
uha->nummscps++;
mscpp->flags = MSCP_ACTIVE;
/*
* put in the phystokv hash table
* Never gets taken out.
*/
mscpp->hashkey = KVTOPHYS(mscpp);
hashnum = MSCP_HASH(mscpp->hashkey);
mscpp->nexthash = uha->mscphash[hashnum];
uha->mscphash[hashnum] = mscpp;
} else {
printf("uha%d: Can't malloc MSCP\n", unit);
}
goto gottit;
} else {
if (!(flags & SCSI_NOSLEEP)) {
tsleep((caddr_t)&uha->free_mscp, PRIBIO,
"uhamscp", 0);
}
}
}
if (mscpp) {
/* Get MSCP from from free list */
uha->free_mscp = mscpp->next;
mscpp->flags = MSCP_ACTIVE;
}
gottit:
if (!(flags & SCSI_NOMASK))
splx(opri);
return (mscpp);
}
/*
* given a physical address, find the mscp that it corresponds to.
*/
struct mscp *
uha_mscp_phys_kv(uha, mscp_phys)
struct uha_data *uha;
long int mscp_phys;
{
int hashnum = MSCP_HASH(mscp_phys);
struct mscp *mscpp = uha->mscphash[hashnum];
while (mscpp) {
if (mscpp->hashkey == mscp_phys)
break;
mscpp = mscpp->nexthash;
}
return mscpp;
}
/*
* Start the board, ready for normal operation
*/
int
uha_init(unit)
int unit;
{
struct uha_data *uha = uhadata[unit];
unsigned char ad[4];
volatile unsigned char model;
volatile unsigned char submodel;
unsigned char config_reg1;
unsigned char config_reg2;
unsigned char dma_ch;
unsigned char irq_ch;
unsigned char uha_id;
int port = uha->baseport;
int i;
int resetcount = 4000; /* 4 secs? */
model = inb(port + UHA_ID0);
submodel = inb(port + UHA_ID1);
if ((model != 0x56) & (submodel != 0x40)) {
printf("uha%d: uha_init, board not responding\n", unit);
return (ENXIO);
}
printf("uha%d: reading board settings, ", unit);
config_reg1 = inb(port + UHA_CONF1);
config_reg2 = inb(port + UHA_CONF2);
dma_ch = (config_reg1 & 0xc0);
irq_ch = (config_reg1 & 0x30);
uha_id = (config_reg2 & 0x07);
switch (dma_ch) {
case UHA_DMA_CH5:
uha->dma = 5;
printf("dma=5 ");
break;
case UHA_DMA_CH6:
uha->dma = 6;
printf("dma=6 ");
break;
case UHA_DMA_CH7:
uha->dma = 7;
printf("dma=7 ");
break;
default:
printf("illegal dma jumper setting\n");
return (EIO);
}
switch (irq_ch) {
case UHA_IRQ10:
uha->vect = 10;
printf("int=10 ");
break;
case UHA_IRQ11:
uha->vect = 11;
printf("int=11 ");
break;
case UHA_IRQ14:
uha->vect = 14;
printf("int=14 ");
break;
case UHA_IRQ15:
uha->vect = 15;
printf("int=15 ");
break;
default:
printf("illegal int jumper setting\n");
return (EIO);
}
/* who are we on the scsi bus */
printf("id=%x\n", uha_id);
uha->our_id = uha_id;
/*
* Note that we are going and return (to probe)
*/
outb(port + UHA_LINT, UHA_ASRST);
while (--resetcount) {
if (inb(port + UHA_LINT))
break;
DELAY(1000); /* 1 mSec per loop */
}
if (resetcount == 0) {
printf("uha%d: board timed out during reset\n", unit);
return (ENXIO);
}
outb(port + UHA_SMASK, 0x81); /* make sure interrupts are enabled */
uha->flags |= UHA_INIT;
return (0);
}
#ifndef min
#define min(x,y) (x < y ? x : y)
#endif /* min */
void
uhaminphys(bp)
struct buf *bp;
{
if (bp->b_bcount > ((UHA_NSEG - 1) * PAGESIZ)) {
bp->b_bcount = ((UHA_NSEG - 1) * PAGESIZ);
}
}
/*
* start a scsi operation given the command and the data address. Also
* needs the unit, target and lu.
*/
int32
uha_scsi_cmd(xs)
struct scsi_xfer *xs;
{
struct scsi_sense_data *s1, *s2;
struct mscp *mscp;
struct uha_dma_seg *sg;
int seg; /* scatter gather seg being worked on */
int i = 0;
int rc = 0;
int thiskv;
unsigned long int thisphys, nextphys;
int unit = xs->sc_link->adapter_unit;
int bytes_this_seg, bytes_this_page, datalen, flags;
struct iovec *iovp;
struct uha_data *uha = uhadata[unit];
int s;
unsigned int stat;
int port = uha->baseport;
unsigned long int templen;
SC_DEBUG(xs->sc_link, SDEV_DB2, ("uha_scsi_cmd\n"));
/*
* get a mscp (mbox-out) to use. If the transfer
* is from a buf (possibly from interrupt time)
* then we can't allow it to sleep
*/
flags = xs->flags;
if (xs->bp)
flags |= (SCSI_NOSLEEP); /* just to be sure */
if (flags & ITSDONE) {
printf("uha%d: Already done?", unit);
xs->flags &= ~ITSDONE;
}
if (!(flags & INUSE)) {
printf("uha%d: Not in use?", unit);
xs->flags |= INUSE;
}
if (!(mscp = uha_get_mscp(unit, flags))) {
xs->error = XS_DRIVER_STUFFUP;
return (TRY_AGAIN_LATER);
}
cheat = mscp;
SC_DEBUG(xs->sc_link, SDEV_DB3, ("start mscp(%x)\n", mscp));
mscp->xs = xs;
/*
* Put all the arguments for the xfer in the mscp
*/
if (flags & SCSI_RESET) {
mscp->opcode = 0x04;
mscp->ca = 0x01;
} else {
mscp->opcode = 0x02;
mscp->ca = 0x01;
}
if (flags & SCSI_DATA_IN) {
mscp->xdir = 0x01;
}
if (flags & SCSI_DATA_OUT) {
mscp->xdir = 0x02;
}
#ifdef GOTTABEJOKING
if (xs->sc_link->lun != 0) {
xs->error = XS_DRIVER_STUFFUP;
uha_free_mscp(unit, mscp, flags);
return (HAD_ERROR);
}
#endif
mscp->dcn = 0x00;
mscp->chan = 0x00;
mscp->target = xs->sc_link->target;
mscp->lun = xs->sc_link->lun;
mscp->link.addr[0] = 0x00;
mscp->link.addr[1] = 0x00;
mscp->link.addr[2] = 0x00;
mscp->link.addr[3] = 0x00;
mscp->link_id = 0x00;
mscp->cdblen = xs->cmdlen;
scratch = KVTOPHYS(&(mscp->mscp_sense));
mscp->sense.addr[0] = (scratch & 0xff);
mscp->sense.addr[1] = ((scratch >> 8) & 0xff);
mscp->sense.addr[2] = ((scratch >> 16) & 0xff);
mscp->sense.addr[3] = ((scratch >> 24) & 0xff);
mscp->senselen = sizeof(mscp->mscp_sense);
mscp->ha_status = 0x00;
mscp->targ_status = 0x00;
if (xs->datalen) { /* should use S/G only if not zero length */
scratch = KVTOPHYS(mscp->uha_dma);
mscp->data.addr[0] = (scratch & 0xff);
mscp->data.addr[1] = ((scratch >> 8) & 0xff);
mscp->data.addr[2] = ((scratch >> 16) & 0xff);
mscp->data.addr[3] = ((scratch >> 24) & 0xff);
sg = mscp->uha_dma;
seg = 0;
mscp->sgth = 0x01;
#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 < UHA_NSEG)) {
scratch = (unsigned long) iovp->iov_base;
sg->addr.addr[0] = (scratch & 0xff);
sg->addr.addr[1] = ((scratch >> 8) & 0xff);
sg->addr.addr[2] = ((scratch >> 16) & 0xff);
sg->addr.addr[3] = ((scratch >> 24) & 0xff);
xs->datalen += *(unsigned long *) sg->len.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,
("%d @0x%x:- ", xs->datalen, xs->data));
datalen = xs->datalen;
thiskv = (int) xs->data;
thisphys = KVTOPHYS(thiskv);
templen = 0;
while ((datalen) && (seg < UHA_NSEG)) {
bytes_this_seg = 0;
/* put in the base address */
sg->addr.addr[0] = (thisphys & 0xff);
sg->addr.addr[1] = ((thisphys >> 8) & 0xff);
sg->addr.addr[2] = ((thisphys >> 16) & 0xff);
sg->addr.addr[3] = ((thisphys >> 24) & 0xff);
SC_DEBUGN(xs->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 & (~(PAGESIZ - 1)))
+ PAGESIZ;
bytes_this_page = nextphys - thisphys;
/**** or the data ****/
bytes_this_page = min(bytes_this_page
,datalen);
bytes_this_seg += bytes_this_page;
datalen -= bytes_this_page;
/* get more ready for the next page */
thiskv = (thiskv & (~(PAGESIZ - 1)))
+ PAGESIZ;
if (datalen)
thisphys = KVTOPHYS(thiskv);
}
/*
* next page isn't contiguous, finish the seg
*/
SC_DEBUGN(xs->sc_link, SDEV_DB4,
("(0x%x)", bytes_this_seg));
sg->len.len[0] = (bytes_this_seg & 0xff);
sg->len.len[1] = ((bytes_this_seg >> 8) & 0xff);
sg->len.len[2] = ((bytes_this_seg >> 16) & 0xff);
sg->len.len[3] = ((bytes_this_seg >> 24) & 0xff);
templen += bytes_this_seg;
sg++;
seg++;
}
}
/* end of iov/kv decision */
mscp->datalen.len[0] = (templen & 0xff);
mscp->datalen.len[1] = ((templen >> 8) & 0xff);
mscp->datalen.len[2] = ((templen >> 16) & 0xff);
mscp->datalen.len[3] = ((templen >> 24) & 0xff);
mscp->sg_num = seg;
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
if (datalen) { /* there's still data, must have run out of segs! */
printf("uha%d: uha_scsi_cmd, more than %d DMA segs\n",
unit, UHA_NSEG);
xs->error = XS_DRIVER_STUFFUP;
uha_free_mscp(unit, mscp, flags);
return (HAD_ERROR);
}
} else { /* No data xfer, use non S/G values */
mscp->data.addr[0] = 0x00;
mscp->data.addr[1] = 0x00;
mscp->data.addr[2] = 0x00;
mscp->data.addr[3] = 0x00;
mscp->datalen.len[0] = 0x00;
mscp->datalen.len[1] = 0x00;
mscp->datalen.len[2] = 0x00;
mscp->datalen.len[3] = 0x00;
mscp->xdir = 0x03;
mscp->sgth = 0x00;
mscp->sg_num = 0x00;
}
/*
* Put the scsi command in the mscp and start it
*/
bcopy(xs->cmd, mscp->cdb, xs->cmdlen);
/*
* Usually return SUCCESSFULLY QUEUED
*/
if (!(flags & SCSI_NOMASK)) {
s = splbio();
uha_send_mbox(unit, mscp);
timeout(uha_timeout, (caddr_t)mscp, (xs->timeout * hz) / 1000);
splx(s);
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n"));
return (SUCCESSFULLY_QUEUED);
}
/*
* If we can't use interrupts, poll on completion
*/
uha_send_mbox(unit, mscp);
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_wait\n"));
do {
if (uha_poll(unit, xs->timeout)) {
if (!(xs->flags & SCSI_SILENT))
printf("uha%d: cmd fail\n", unit);
if (!(uha_abort(unit, mscp))) {
printf("uha%d: abort failed in wait\n", unit);
uha_free_mscp(unit, mscp, flags);
}
xs->error = XS_DRIVER_STUFFUP;
return (HAD_ERROR);
}
}
while (!(xs->flags & ITSDONE)); /* something (?) else finished */
if (xs->error) {
return (HAD_ERROR);
}
return (COMPLETE);
}
void
uha_timeout(caddr_t arg1, int arg2)
{
struct mscp *mscp = (struct mscp *)arg1;
int unit;
struct uha_data *uha;
int s = splbio();
/*int port = uha->baseport; */
unit = mscp->xs->sc_link->adapter_unit;
uha = uhadata[unit];
printf("uha%d:%d:%d (%s%d) timed out ", unit
,mscp->xs->sc_link->target
,mscp->xs->sc_link->lun
,mscp->xs->sc_link->device->name
,mscp->xs->sc_link->dev_unit);
#ifdef UHADEBUG
uha_print_active_mscp(unit);
#endif /*UHADEBUG */
if ((uha_abort(unit, mscp) != 1) || (mscp->flags = MSCP_ABORTED)) {
printf("AGAIN");
mscp->xs->retries = 0; /* I MEAN IT ! */
uha_done(unit, mscp, FAIL);
} else { /* abort the operation that has timed out */
printf("\n");
timeout(uha_timeout, (caddr_t)mscp, 2 * hz);
mscp->flags = MSCP_ABORTED;
}
splx(s);
}
#ifdef UHADEBUG
void
uha_print_mscp(mscp)
struct mscp *mscp;
{
printf("mscp:%x op:%x cmdlen:%d senlen:%d\n"
,mscp
,mscp->opcode
,mscp->cdblen
,mscp->senselen);
printf(" sg:%d sgnum:%x datlen:%d hstat:%x tstat:%x flags:%x\n"
,mscp->sgth
,mscp->sg_num
,mscp->datalen
,mscp->ha_status
,mscp->targ_status
,mscp->flags);
show_scsi_cmd(mscp->xs);
}
void
uha_print_active_mscp(int unit)
{
struct uha_data *uha = uhadata[unit];
struct mscp *mscp;
int i = 0;
while (i < MSCP_HASH_SIZE) {
mscp = uha->mscphash[i];
while (mscp) {
if (mscp->flags != MSCP_FREE) {
uha_print_mscp(mscp);
}
mscp = mscp->nexthash;
}
i++;
}
}
#endif /*UHADEBUG */
#endif /*KERNEL */
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.