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NetBSD/sys/dev/isa/ultra14f.c

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/*
* 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.
*
* $Id: ultra14f.c,v 1.26 1994/04/07 06:51:13 mycroft Exp $
*/
/*
* 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.
*
* 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.
*
* 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
*/
#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 <i386/isa/isavar.h>
#include <i386/isa/icu.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#ifdef DDB
int Debugger();
#else /* DDB */
#define Debugger()
#endif /* DDB */
typedef struct {
u_char addr[4];
} physaddr;
typedef struct {
u_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)(x))>>MSCP_HASH_SHIFT) % MSCP_HASH_SIZE)
#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 {
u_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 */
u_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 */
u_char dcn:1; /* disable disconnect for this command */
u_char ca:1; /* cache control */
u_char sgth:1; /* scatter gather flag */
u_char target:3;
u_char chan:2; /* scsi channel (always 0 for 14f) */
u_char lun:3;
physaddr data;
physlen datalen;
physaddr link;
u_char link_id;
u_char sg_num; /*number of scat gath segs */
/*in s-g list if sg flag is */
/*set. starts at 1, 8bytes per */
u_char senselen;
u_char cdblen;
u_char cdb[12];
u_char ha_status;
u_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 hashkey;
};
struct uha_softc {
struct device sc_dev;
struct isadev sc_id;
struct intrhand sc_ih;
u_short sc_iobase;
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;
};
void uha_send_mbox __P((struct uha_softc *, struct mscp *));
int uha_abort __P((struct uha_softc *, struct mscp *));
int uha_poll __P((struct uha_softc *, int));
u_int uha_adapter_info __P((struct uha_softc *));
int uhaintr __P((struct uha_softc *));
void uha_done __P((struct uha_softc *, struct mscp *));
void uha_free_mscp __P((struct uha_softc *, struct mscp *, int flags));
struct mscp *uha_get_mscp __P((struct uha_softc *, int));
struct mscp *uha_mscp_phys_kv __P((struct uha_softc *, u_long));
int uha_find __P((struct uha_softc *));
void uha_init __P((struct uha_softc *));
void uhaminphys __P((struct buf *));
int uha_scsi_cmd __P((struct scsi_xfer *));
void uha_timeout __P((caddr_t));
#ifdef UHADEBUG
void uha_print_mscp __P((struct mscp *));
void uha_print_active_mscp __P((struct uha_softc *));
#endif
u_long scratch;
#define UHA_SHOWMSCPS 0x01
#define UHA_SHOWINTS 0x02
#define UHA_SHOWCMDS 0x04
#define UHA_SHOWMISC 0x08
struct scsi_adapter uha_switch = {
uha_scsi_cmd,
uhaminphys,
0,
0,
uha_adapter_info,
"uha"
};
/* 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
};
int uhaprobe();
void uhaattach();
struct cfdriver uhacd = {
NULL, "uha", uhaprobe, uhaattach, DV_DULL, sizeof(struct uha_softc)
};
/*
* Function to send a command out through a mailbox
*/
void
uha_send_mbox(uha, mscp)
struct uha_softc *uha;
struct mscp *mscp;
{
u_short iobase = uha->sc_iobase;
int spincount = 100000; /* 1s should be enough */
int s = splbio();
while (--spincount) {
if ((inb(iobase + UHA_LINT) & UHA_LDIP) == 0)
break;
delay(100);
}
if (!spincount) {
printf("%s: uha_send_mbox, board not responding\n",
uha->sc_dev.dv_xname);
Debugger();
}
outl(iobase + UHA_OGM0, KVTOPHYS(mscp));
outb(iobase + UHA_LINT, UHA_OGMINT);
splx(s);
}
/*
* Function to send abort to 14f
*/
int
uha_abort(uha, mscp)
struct uha_softc *uha;
struct mscp *mscp;
{
u_short iobase = uha->sc_iobase;
int spincount = 100; /* 1 mSec */
int abortcount = 200000; /*2 secs */
int s = splbio();
while (--spincount) {
if ((inb(iobase + UHA_LINT) & UHA_LDIP) == 0)
break;
delay(10);
}
if (!spincount) {
printf("%s: uha_abort, board not responding\n",
uha->sc_dev.dv_xname);
Debugger();
}
outl(iobase + UHA_OGM0, KVTOPHYS(mscp));
outb(iobase + UHA_LINT, UHA_ABORT);
while (--abortcount) {
if (inb(iobase + UHA_SINT) & UHA_ABORT_FAIL)
break;
delay(10);
}
if (!abortcount) {
printf("%s: uha_abort, board not responding\n",
uha->sc_dev.dv_xname);
Debugger();
}
if ((inb(iobase + UHA_SINT) & UHA_ABORT_FAIL) == UHA_ABORT_SUCC) {
outb(iobase + UHA_SINT, UHA_ABORT_ACK);
splx(s);
return 1;
} else {
outb(iobase + 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(uha, wait)
struct uha_softc *uha;
int wait;
{
u_short iobase = uha->sc_iobase;
while (--wait) {
if (inb(iobase + UHA_SINT) & UHA_SINTP)
break;
delay(1000); /* 1 mSec per loop */
}
if (!wait) {
printf("%s: uha_poll, board not responding\n",
uha->sc_dev.dv_xname);
return EIO;
}
uhaintr(uha);
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(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct uha_softc *uha = (void *)self;
struct isa_attach_args *ia = aux;
#ifdef NEWCONFIG
if (ia->ia_iobase == IOBASEUNK)
return 0;
#endif
uha->sc_iobase = ia->ia_iobase;
/*
* Try initialise a unit at this location
* sets up dma and bus speed, loads uha->vect
*/
if (uha_find(uha) != 0)
return 0;
#ifdef NEWCONFIG
if (ia->ia_irq == IRQUNK) {
ia->ia_irq = (1 << uha->vect);
} else {
if (ia->ia_irq != (1 << uha->vect)) {
printf("uha%d: irq mismatch, %x != %x\n",
uha->sc_dev.dv_unit, ia->ia_irq,
1 << uha->vect);
return 0;
}
}
if (ia->ia_drq == DRQUNK) {
ia->ia_drq = uha->dma;
} else {
if (ia->ia_drq != uha->dma) {
printf("uha%d: drq mismatch, %x != %x\n",
uha->sc_dev.dv_unit, ia->ia_drq, uha->dma);
return 0;
}
}
#endif
ia->ia_msize = 0;
ia->ia_iosize = 4;
return 1;
}
uhaprint()
{
}
/*
* Attach all the sub-devices we can find
*/
void
uhaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct isa_attach_args *ia = aux;
struct uha_softc *uha = (void *)self;
uha_init(uha);
/*
* fill in the prototype scsi_link.
*/
uha->sc_link.adapter_softc = uha;
uha->sc_link.adapter_targ = uha->our_id;
uha->sc_link.adapter = &uha_switch;
uha->sc_link.device = &uha_dev;
printf("\n");
#ifdef NEWCONFIG
isa_establish(&uha->sc_id, &uha->sc_dev);
#endif
uha->sc_ih.ih_fun = uhaintr;
uha->sc_ih.ih_arg = uha;
uha->sc_ih.ih_level = IPL_BIO;
intr_establish(ia->ia_irq, &uha->sc_ih);
/*
* ask the adapter what subunits are present
*/
config_found(self, &uha->sc_link, uhaprint);
}
/*
* Return some information to the caller about
* the adapter and it's capabilities
*/
u_int
uha_adapter_info(uha)
struct uha_softc *uha;
{
return 2; /* 2 outstanding requests at a time per device */
}
/*
* Catch an interrupt from the adaptor
*/
int
uhaintr(uha)
struct uha_softc *uha;
{
struct mscp *mscp;
u_char uhastat;
u_long mboxval;
u_short iobase = uha->sc_iobase;
#ifdef UHADEBUG
printf("%s: uhaintr ", uha->sc_dev.dv_xname);
#endif /*UHADEBUG */
if ((inb(iobase + UHA_SINT) & UHA_SINTP) == 0)
return 0;
do {
/*
* First get all the information and then
* acknowledge the interrupt
*/
uhastat = inb(iobase + UHA_SINT);
mboxval = inl(iobase + UHA_ICM0);
outb(iobase + 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(uha, mscp);
} while (inb(iobase + UHA_SINT) & UHA_SINTP);
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(uha, mscp)
struct uha_softc *uha;
struct mscp *mscp;
{
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(uha, mscp, xs->flags);
scsi_done(xs);
}
/*
* A mscp (and hence a mbx-out) is put onto the free list.
*/
void
uha_free_mscp(uha, mscp, flags)
struct uha_softc *uha;
struct mscp *mscp;
int flags;
{
int opri;
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(uha, flags)
struct uha_softc *uha;
int flags;
{
int opri;
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("%s: Can't malloc MSCP\n",
uha->sc_dev.dv_xname);
}
goto gottit;
} else {
if (!(flags & SCSI_NOSLEEP))
tsleep((caddr_t)&uha->free_mscp, PRIBIO,
"uhamsc", 0);
}
}
if (mscpp) {
/* Get MSCP from the 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_softc *uha;
u_long 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_find(uha)
struct uha_softc *uha;
{
u_char ad[4];
volatile u_char model;
volatile u_char submodel;
u_char config_reg1;
u_char config_reg2;
u_char dma_ch;
u_char irq_ch;
u_char uha_id;
u_short iobase = uha->sc_iobase;
int i;
int resetcount = 4000; /* 4 secs? */
model = inb(iobase + UHA_ID0);
submodel = inb(iobase + UHA_ID1);
if ((model != 0x56) & (submodel != 0x40))
return ENXIO;
config_reg1 = inb(iobase + UHA_CONF1);
config_reg2 = inb(iobase + 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;
break;
case UHA_DMA_CH6:
uha->dma = 6;
break;
case UHA_DMA_CH7:
uha->dma = 7;
break;
default:
printf("illegal dma setting %x\n", dma_ch);
return EIO;
}
switch (irq_ch) {
case UHA_IRQ10:
uha->vect = 10;
break;
case UHA_IRQ11:
uha->vect = 11;
break;
case UHA_IRQ14:
uha->vect = 14;
break;
case UHA_IRQ15:
uha->vect = 15;
break;
default:
printf("illegal int setting %x\n", irq_ch);
return EIO;
}
/* who are we on the scsi bus */
uha->our_id = uha_id;
outb(iobase + UHA_LINT, UHA_ASRST);
while (--resetcount) {
if (inb(iobase + UHA_LINT))
break;
delay(1000); /* 1 mSec per loop */
}
if (!resetcount) {
printf("%s: board timed out during reset\n",
uha->sc_dev.dv_xname);
return ENXIO;
}
/*
* Note that we are going and return (to probe)
*/
return 0;
}
void
uha_init(uha)
struct uha_softc *uha;
{
u_short iobase = uha->sc_iobase;
outb(iobase + UHA_SMASK, 0x81); /* make sure interrupts are enabled */
}
void
uhaminphys(bp)
struct buf *bp;
{
if (bp->b_bcount > ((UHA_NSEG - 1) << PGSHIFT))
bp->b_bcount = ((UHA_NSEG - 1) << PGSHIFT);
}
/*
* start a scsi operation given the command and the data address. Also
* needs the unit, target and lu.
*/
int
uha_scsi_cmd(xs)
struct scsi_xfer *xs;
{
struct scsi_link *sc_link = xs->sc_link;
struct uha_softc *uha = sc_link->adapter_softc;
struct mscp *mscp;
struct uha_dma_seg *sg;
int seg; /* scatter gather seg being worked on */
u_long thiskv, thisphys, nextphys;
int bytes_this_seg, bytes_this_page, datalen, flags;
struct iovec *iovp;
int s;
u_long templen;
SC_DEBUG(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("%s: already done?", uha->sc_dev.dv_xname);
xs->flags &= ~ITSDONE;
}
if (!(flags & INUSE)) {
printf("%s: not in use?", uha->sc_dev.dv_xname);
xs->flags |= INUSE;
}
if (!(mscp = uha_get_mscp(uha, flags))) {
xs->error = XS_DRIVER_STUFFUP;
return TRY_AGAIN_LATER;
}
SC_DEBUG(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;
mscp->dcn = 0x00;
mscp->chan = 0x00;
mscp->target = sc_link->target;
mscp->lun = 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 = (u_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 += *(u_long *) sg->len.len = 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);
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(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->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(sc_link, SDEV_DB4, ("\n"));
if (datalen) { /* there's still data, must have run out of segs! */
printf("%s: uha_scsi_cmd, more than %d DMA segs\n",
uha->sc_dev.dv_xname, UHA_NSEG);
xs->error = XS_DRIVER_STUFFUP;
uha_free_mscp(uha, 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(uha, mscp);
timeout(uha_timeout, (caddr_t)mscp, (xs->timeout * hz) / 1000);
splx(s);
SC_DEBUG(sc_link, SDEV_DB3, ("cmd_sent\n"));
return SUCCESSFULLY_QUEUED;
}
/*
* If we can't use interrupts, poll on completion
*/
uha_send_mbox(uha, mscp);
SC_DEBUG(sc_link, SDEV_DB3, ("cmd_wait\n"));
do {
if (uha_poll(uha, xs->timeout)) {
if (!(xs->flags & SCSI_SILENT))
printf("%s: cmd fail\n", uha->sc_dev.dv_xname);
if (!uha_abort(uha, mscp)) {
printf("%s: abort failed in wait\n",
uha->sc_dev.dv_xname);
uha_free_mscp(uha, 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(arg)
caddr_t arg;
{
int s = splbio();
struct mscp *mscp = (void *)arg;
struct uha_softc *uha = mscp->xs->sc_link->adapter_softc;
sc_print_addr(mscp->xs->sc_link);
printf("timed out");
#ifdef UHADEBUG
uha_print_active_mscp(uha);
#endif /*UHADEBUG */
if (!uha_abort(uha, mscp) || (mscp->flags == MSCP_ABORTED)) {
printf(" AGAIN\n");
mscp->xs->retries = 0; /* I MEAN IT ! */
uha_done(uha, mscp);
} 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(uha)
struct uha_softc *uha;
{
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;
}
}
}
#endif /*UHADEBUG */
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