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|
/* $OpenBSD: uba.c,v 1.14 2002/01/18 02:09:27 miod Exp $ */
/* $NetBSD: uba.c,v 1.43 2000/01/24 02:40:36 matt Exp $ */
/*
* Copyright (c) 1996 Jonathan Stone.
* Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
* Copyright (c) 1982, 1986 The Regents of the University of California.
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)uba.c 7.10 (Berkeley) 12/16/90
* @(#)autoconf.c 7.20 (Berkeley) 5/9/91
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/extent.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/conf.h>
#include <sys/dkstat.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <machine/pte.h>
#include <machine/cpu.h>
#include <machine/mtpr.h>
#include <machine/nexus.h>
#include <machine/sid.h>
#include <machine/scb.h>
#include <machine/trap.h>
#include <machine/frame.h>
#include <vax/uba/ubareg.h>
#include <vax/uba/ubavar.h>
volatile int /* rbr, rcvec,*/ svec;
static int ubasearch __P((struct device *, struct cfdata *, void *));
static int ubaprint __P((void *, const char *));
#if 0
static void ubastray __P((int));
#endif
static void ubainitmaps __P((struct uba_softc *));
extern struct cfdriver uba_cd;
#define spluba spl7
#if defined(DW780) || defined(DW750)
int dw_match __P((struct device *, struct cfdata *, void *));
int
dw_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbi_attach_args *sa = (struct sbi_attach_args *)aux;
if ((cf->cf_loc[0] != sa->nexnum) && (cf->cf_loc[0] > -1 ))
return 0;
/*
* The uba type is actually only telling where the uba
* space is in nexus space.
*/
if ((sa->type & ~3) != NEX_UBA0)
return 0;
return 1;
}
#endif
#ifdef DW780
/*
* The DW780 are directly connected to the SBI on 11/780 and 8600.
*/
void dw780_attach __P((struct device *, struct device *, void *));
void dw780_beforescan __P((struct uba_softc *));
void dw780_afterscan __P((struct uba_softc *));
int dw780_errchk __P((struct uba_softc *));
void dw780_init __P((struct uba_softc *));
void dw780_purge __P((struct uba_softc *, int));
void uba_dw780int __P((int));
static void ubaerror __P((struct uba_softc *, int *, int *));
struct cfattach uba_sbi_ca = {
sizeof(struct uba_softc), dw_match, dw780_attach
};
char ubasr_bits[] = UBASR_BITS;
void
dw780_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct uba_softc *sc = (void *)self;
struct sbi_attach_args *sa = aux;
int ubaddr = sa->type & 3;
int i;
printf(": DW780\n");
/*
* Fill in bus specific data.
*/
sc->uh_uba = (void *)sa->nexaddr;
sc->uh_nbdp = NBDP780;
sc->uh_nr = sa->nexnum * (parent->dv_unit + 1);
sc->uh_beforescan = dw780_beforescan;
sc->uh_afterscan = dw780_afterscan;
sc->uh_errchk = dw780_errchk;
sc->uh_ubapurge = dw780_purge;
sc->uh_ubainit = dw780_init;
sc->uh_type = DW780;
sc->uh_memsize = UBAPAGES;
sc->uh_ibase = VAX_NBPG + ubaddr * VAX_NBPG;
sc->uh_mr = sc->uh_uba->uba_map;
for (i = 0; i < 4; i++)
scb_vecalloc(256 + i * 64 + sa->nexnum * 4, uba_dw780int,
sc->uh_dev.dv_unit, SCB_ISTACK);
uba_attach(sc, (parent->dv_unit ? UMEMB8600(ubaddr) :
UMEMA8600(ubaddr)) + (UBAPAGES * VAX_NBPG));
}
void
dw780_beforescan(sc)
struct uba_softc *sc;
{
volatile int *hej = &sc->uh_uba->uba_sr;
*hej = *hej;
sc->uh_uba->uba_cr = UBACR_IFS|UBACR_BRIE;
}
void
dw780_afterscan(sc)
struct uba_softc *sc;
{
sc->uh_uba->uba_cr = UBACR_IFS | UBACR_BRIE |
UBACR_USEFIE | UBACR_SUEFIE |
(sc->uh_uba->uba_cr & 0x7c000000);
}
/*
* On DW780 badaddr() in uba space sets a bit in uba_sr instead of
* doing a machine check.
*/
int
dw780_errchk(sc)
struct uba_softc *sc;
{
volatile int *hej = &sc->uh_uba->uba_sr;
if (*hej) {
*hej = *hej;
return 1;
}
return 0;
}
void
uba_dw780int(uba)
int uba;
{
int br, vec;
struct uba_softc *sc = uba_cd.cd_devs[uba];
struct uba_regs *ur = sc->uh_uba;
br = mfpr(PR_IPL);
vec = ur->uba_brrvr[br - 0x14];
if (vec <= 0) {
ubaerror(sc, &br, (int *)&vec);
if (svec == 0)
return;
}
if (cold)
scb_fake(vec + sc->uh_ibase, br);
else {
struct ivec_dsp *scb_vec = (struct ivec_dsp *)((int)scb + 512 + vec * 4);
(*scb_vec->hoppaddr)(scb_vec->pushlarg);
}
}
void
dw780_init(sc)
struct uba_softc *sc;
{
sc->uh_uba->uba_cr = UBACR_ADINIT;
sc->uh_uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE;
while ((sc->uh_uba->uba_cnfgr & UBACNFGR_UBIC) == 0)
;
}
void
dw780_purge(sc, bdp)
struct uba_softc *sc;
int bdp;
{
sc->uh_uba->uba_dpr[bdp] |= UBADPR_BNE;
}
int ubawedgecnt = 10;
int ubacrazy = 500;
int zvcnt_max = 5000; /* in 8 sec */
int ubaerrcnt;
/*
* This routine is called by the locore code to process a UBA
* error on an 11/780 or 8600. The arguments are passed
* on the stack, and value-result (through some trickery).
* In particular, the uvec argument is used for further
* uba processing so the result aspect of it is very important.
* It must not be declared register.
*/
/*ARGSUSED*/
void
ubaerror(uh, ipl, uvec)
register struct uba_softc *uh;
int *ipl, *uvec;
{
struct uba_regs *uba = uh->uh_uba;
register int sr, s;
if (*uvec == 0) {
/*
* Declare dt as unsigned so that negative values
* are handled as >8 below, in case time was set back.
*/
u_long dt = time.tv_sec - uh->uh_zvtime;
uh->uh_zvtotal++;
if (dt > 8) {
uh->uh_zvtime = time.tv_sec;
uh->uh_zvcnt = 0;
}
if (++uh->uh_zvcnt > zvcnt_max) {
printf("%s: too many zero vectors (%d in <%d sec)\n",
uh->uh_dev.dv_xname, uh->uh_zvcnt, (int)dt + 1);
printf("\tIPL 0x%x\n\tcnfgr: %b Adapter Code: 0x%x\n",
*ipl, uba->uba_cnfgr&(~0xff), UBACNFGR_BITS,
uba->uba_cnfgr&0xff);
printf("\tsr: %b\n\tdcr: %x (MIC %sOK)\n",
uba->uba_sr, ubasr_bits, uba->uba_dcr,
(uba->uba_dcr&0x8000000)?"":"NOT ");
ubareset(uh->uh_dev.dv_unit);
}
return;
}
if (uba->uba_cnfgr & NEX_CFGFLT) {
printf("%s: sbi fault sr=%b cnfgr=%b\n",
uh->uh_dev.dv_xname, uba->uba_sr, ubasr_bits,
uba->uba_cnfgr, NEXFLT_BITS);
ubareset(uh->uh_dev.dv_unit);
*uvec = 0;
return;
}
sr = uba->uba_sr;
s = spluba();
printf("%s: uba error sr=%b fmer=%x fubar=%o\n", uh->uh_dev.dv_xname,
uba->uba_sr, ubasr_bits, uba->uba_fmer, 4*uba->uba_fubar);
splx(s);
uba->uba_sr = sr;
*uvec &= UBABRRVR_DIV;
if (++ubaerrcnt % ubawedgecnt == 0) {
if (ubaerrcnt > ubacrazy)
panic("uba crazy");
printf("ERROR LIMIT ");
ubareset(uh->uh_dev.dv_unit);
*uvec = 0;
return;
}
return;
}
#endif
#ifdef DW750
/*
* The DW780 and DW750 are quite similar to their function from
* a programmers point of view. Differencies are number of BDP's
* and bus status/command registers, the latter are (partly) IPR's
* on 750.
*/
void dw750_attach __P((struct device *, struct device *, void *));
void dw750_init __P((struct uba_softc *));
void dw750_purge __P((struct uba_softc *, int));
struct cfattach uba_cmi_ca = {
sizeof(struct uba_softc), dw_match, dw750_attach
};
void
dw750_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct uba_softc *sc = (void *)self;
struct sbi_attach_args *sa = aux;
int ubaddr = sa->nexinfo & 1;
printf(": DW750\n");
/*
* Fill in bus specific data.
*/
sc->uh_uba = (void *)sa->nexaddr;
sc->uh_nbdp = NBDP750;
sc->uh_nr = sa->nexnum;
sc->uh_ubapurge = dw750_purge;
sc->uh_ubainit = dw750_init;
sc->uh_type = DW750;
sc->uh_memsize = UBAPAGES;
sc->uh_mr = sc->uh_uba->uba_map;
uba_attach(sc, UMEM750(ubaddr) + (UBAPAGES * VAX_NBPG));
}
void
dw750_init(sc)
struct uba_softc *sc;
{
mtpr(0, PR_IUR);
DELAY(500000);
}
void
dw750_purge(sc, bdp)
struct uba_softc *sc;
int bdp;
{
sc->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE | UBADPR_NXM | UBADPR_UCE;
}
#endif
#ifdef QBA
/*
* The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems.
* It has an address space of 4MB (22 address bits), therefore the name,
* and is hardware compatible with all 16 and 18 bits Q-bus devices.
* This driver can only handle map registers up to 1MB due to map info
* storage, but that should be enough for normal purposes.
*/
int qba_match __P((struct device *, struct cfdata *, void *));
void qba_attach __P((struct device *, struct device *, void *));
void qba_beforescan __P((struct uba_softc*));
void qba_init __P((struct uba_softc*));
struct cfattach uba_mainbus_ca = {
sizeof(struct uba_softc), qba_match, qba_attach
};
int
qba_match(parent, vcf, aux)
struct device *parent;
struct cfdata *vcf;
void *aux;
{
struct bp_conf *bp = aux;
if (strcmp(bp->type, "uba"))
return 0;
return 1;
}
void
qba_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct uba_softc *sc = (void *)self;
printf(": Q22\n");
/*
* Fill in bus specific data.
*/
/* sc->uh_uba not used; no regs */
/* sc->uh_nbdp is 0; Qbus has no BDP's */
/* sc->uh_nr is 0; there can be only one! */
/* sc->uh_afterscan; not used */
/* sc->uh_errchk; not used */
sc->uh_beforescan = qba_beforescan;
sc->uh_ubainit = qba_init;
sc->uh_type = QBA;
sc->uh_memsize = QBAPAGES;
/*
* Map in the UBA page map into kernel space. On other UBAs,
* the map registers are in the bus IO space.
*/
sc->uh_mr = (void *)vax_map_physmem(QBAMAP,
(QBAPAGES * sizeof(struct pte)) / VAX_NBPG);
uba_attach(sc, QIOPAGE);
}
/*
* Called when the QBA is set up; to enable DMA access from
* QBA devices to main memory.
*/
void
qba_beforescan(sc)
struct uba_softc *sc;
{
*((u_short *)(sc->uh_iopage + QIPCR)) = Q_LMEAE;
}
void
qba_init(sc)
struct uba_softc *sc;
{
mtpr(0, PR_IUR);
DELAY(500000);
qba_beforescan(sc);
}
#endif
#ifdef DW730
struct cfattach uba_dw730_ca = {
sizeof(struct uba_softc), dw730_match, dw730_attach
};
#endif
#if 0
/*
* Stray interrupt vector handler, used when nowhere else to go to.
*/
void
ubastray(arg)
int arg;
{
struct callsframe *cf = FRAMEOFFSET(arg);
struct uba_softc *sc = uba_cd.cd_devs[arg];
int vektor;
rbr = mfpr(PR_IPL);
#ifdef DW780
if (sc->uh_type == DW780)
vektor = svec >> 2;
else
#endif
vektor = (cf->ca_pc - (unsigned)&sc->uh_idsp[0]) >> 4;
if (cold) {
#ifdef DW780
if (sc->uh_type != DW780)
#endif
rcvec = vektor;
} else
printf("uba%d: unexpected interrupt, vector 0x%x, br 0x%x\n",
arg, svec, rbr);
}
#endif
/*
* Do transfer on device argument. The controller
* and uba involved are implied by the device.
* We queue for resource wait in the uba code if necessary.
* We return 1 if the transfer was started, 0 if it was not.
*
* The onq argument must be zero iff the device is not on the
* queue for this UBA. If onq is set, the device must be at the
* head of the queue. In any case, if the transfer is started,
* the device will be off the queue, and if not, it will be on.
*
* Drivers that allocate one BDP and hold it for some time should
* set ud_keepbdp. In this case um_bdp tells which BDP is allocated
* to the controller, unless it is zero, indicating that the controller
* does not now have a BDP.
*/
int
ubaqueue(uu, bp)
register struct uba_unit *uu;
struct buf *bp;
{
register struct uba_softc *uh;
register int s;
uh = (void *)((struct device *)(uu->uu_softc))->dv_parent;
s = spluba();
/*
* Honor exclusive BDP use requests.
*/
if ((uu->uu_xclu && uh->uh_users > 0) || uh->uh_xclu)
goto rwait;
if (uu->uu_keepbdp) {
/*
* First get just a BDP (though in fact it comes with
* one map register too).
*/
if (uu->uu_bdp == 0) {
uu->uu_bdp = uballoc(uh, (caddr_t)0, 0,
UBA_NEEDBDP|UBA_CANTWAIT);
if (uu->uu_bdp == 0)
goto rwait;
}
/* now share it with this transfer */
uu->uu_ubinfo = ubasetup(uh, bp,
uu->uu_bdp|UBA_HAVEBDP|UBA_CANTWAIT);
} else
uu->uu_ubinfo = ubasetup(uh, bp, UBA_NEEDBDP|UBA_CANTWAIT);
if (uu->uu_ubinfo == 0)
goto rwait;
uh->uh_users++;
if (uu->uu_xclu)
uh->uh_xclu = 1;
splx(s);
return (1);
rwait:
SIMPLEQ_INSERT_TAIL(&uh->uh_resq, uu, uu_resq);
splx(s);
return (0);
}
void
ubadone(uu)
struct uba_unit *uu;
{
struct uba_softc *uh = (void *)((struct device *)
(uu->uu_softc))->dv_parent;
if (uu->uu_xclu)
uh->uh_xclu = 0;
uh->uh_users--;
if (uu->uu_keepbdp)
uu->uu_ubinfo &= ~BDPMASK; /* keep BDP for misers */
ubarelse(uh, &uu->uu_ubinfo);
}
/*
* Allocate and setup UBA map registers, and bdp's
* Flags says whether bdp is needed, whether the caller can't
* wait (e.g. if the caller is at interrupt level).
* Return value encodes map register plus page offset,
* bdp number and number of map registers.
*/
int
ubasetup(uh, bp, flags)
struct uba_softc *uh;
struct buf *bp;
int flags;
{
int npf;
int temp;
int reg, bdp;
int a, o, ubinfo;
vaddr_t addr;
if (uh->uh_nbdp == 0)
flags &= ~UBA_NEEDBDP;
o = (int)bp->b_un.b_addr & VAX_PGOFSET;
npf = vax_btoc(bp->b_bcount + o) + 1;
if (npf > UBA_MAXNMR)
panic("uba xfer too big");
a = spluba();
error = extent_alloc(uh->uh_ext, npf * VAX_NBPG, VAX_NBPG, 0,
EX_NOBOUNDARY, (flags & UBA_CANTWAIT) ? EX_NOWAIT : EX_WAITOK,
(u_long *)addr);
if (error != 0) {
splx(a);
return (0);
}
reg = vax_btoc(addr);
if ((flags & UBA_NEED16) && reg + npf > 128) {
/*
* Could hang around and try again (if we can ever succeed).
* Won't help any current device...
*/
extent_free(uh->uh_ext, (u_long)addr, npf * VAX_NBPG,
EX_NOWAIT);
splx(a);
return (0);
}
bdp = 0;
if (flags & UBA_NEEDBDP) {
while ((bdp = ffs((long)uh->uh_bdpfree)) == 0) {
if (flags & UBA_CANTWAIT) {
extent_free(uh->uh_ext, (u_long)addr,
npf * VAX_NBPG, EX_NOWAIT);
splx(a);
return (0);
}
uh->uh_bdpwant++;
sleep((caddr_t)&uh->uh_bdpwant, PSWP);
}
uh->uh_bdpfree &= ~(1 << (bdp-1));
} else if (flags & UBA_HAVEBDP)
bdp = (flags >> 28) & 0xf;
splx(a);
reg--;
ubinfo = UBAI_INFO(o, reg, npf, bdp);
temp = (bdp << 21) | UBAMR_MRV;
if (bdp && (o & 01))
temp |= UBAMR_BO;
disk_reallymapin(bp, uh->uh_mr, reg, temp | PG_V);
return (ubinfo);
}
/*
* Non buffer setup interface... set up a buffer and call ubasetup.
*/
int
uballoc(uh, addr, bcnt, flags)
struct uba_softc *uh;
caddr_t addr;
int bcnt, flags;
{
struct buf ubabuf;
ubabuf.b_un.b_addr = addr;
ubabuf.b_flags = B_BUSY;
ubabuf.b_bcount = bcnt;
/* that's all the fields ubasetup() needs */
return (ubasetup(uh, &ubabuf, flags));
}
/*
* Release resources on uba uban, and then unblock resource waiters.
* The map register parameter is by value since we need to block
* against uba resets on 11/780's.
*/
void
ubarelse(uh, amr)
struct uba_softc *uh;
int *amr;
{
struct uba_unit *uu;
register int bdp, reg, npf, s;
int mr;
/*
* Carefully see if we should release the space, since
* it may be released asynchronously at uba reset time.
*/
s = spluba();
mr = *amr;
if (mr == 0) {
/*
* A ubareset() occurred before we got around
* to releasing the space... no need to bother.
*/
splx(s);
return;
}
*amr = 0;
bdp = UBAI_BDP(mr);
if (bdp) {
if (uh->uh_ubapurge)
(*uh->uh_ubapurge)(uh, bdp);
uh->uh_bdpfree |= 1 << (bdp-1); /* atomic */
if (uh->uh_bdpwant) {
uh->uh_bdpwant = 0;
wakeup((caddr_t)&uh->uh_bdpwant);
}
}
/*
* Put back the registers in the resource map.
* The map code must not be reentered,
* nor can the registers be freed twice.
* Unblock interrupts once this is done.
*/
npf = UBAI_NMR(mr);
reg = UBAI_MR(mr) + 1;
extent_free(uh->uh_ext, reg * VAX_NBPG, npf * VAX_NBPG, EX_NOWAIT);
splx(s);
/*
* Wakeup sleepers for map registers,
* and also, if there are processes blocked in dgo(),
* give them a chance at the UNIBUS.
*/
if (uh->uh_mrwant) {
uh->uh_mrwant = 0;
wakeup((caddr_t)&uh->uh_mrwant);
}
while ((uu = uh->uh_resq.sqh_first)) {
SIMPLEQ_REMOVE_HEAD(&uh->uh_resq, uu, uu_resq);
if ((*uu->uu_ready)(uu) == 0)
break;
}
}
void
ubainitmaps(uhp)
register struct uba_softc *uhp;
{
int error;
if (uhp->uh_memsize > UBA_MAXMR)
uhp->uh_memsize = UBA_MAXMR;
uhp->uh_ext = extent_create("uba", 0, uhp->uh_memsize * VAX_NBPG,
M_DEVBUF, uhp->uh_extspace, EXTENT_FIXED_STORAGE_SIZE(UAMSIZ),
EX_NOWAIT);
uhp->uh_bdpfree = (1 << uhp->uh_nbdp) - 1;
}
/*
* Generate a reset on uba number uban. Then
* call each device that asked to be called during attach,
* giving it a chance to clean up so as to be able to continue.
*/
void
ubareset(uban)
int uban;
{
register struct uba_softc *uh = uba_cd.cd_devs[uban];
int s, i;
s = spluba();
uh->uh_users = 0;
uh->uh_zvcnt = 0;
uh->uh_xclu = 0;
SIMPLEQ_INIT(&uh->uh_resq);
uh->uh_bdpwant = 0;
uh->uh_mrwant = 0;
ubainitmaps(uh);
wakeup((caddr_t)&uh->uh_bdpwant);
wakeup((caddr_t)&uh->uh_mrwant);
printf("%s: reset", uh->uh_dev.dv_xname);
(*uh->uh_ubainit)(uh);
for (i = 0; i < uh->uh_resno; i++)
(*uh->uh_reset[i])(uh->uh_resarg[i]);
printf("\n");
splx(s);
}
#ifdef notyet
/*
* Determine the interrupt priority of a Q-bus
* peripheral. The device probe routine must spl6(),
* attempt to make the device request an interrupt,
* delaying as necessary, then call this routine
* before resetting the device.
*/
int
qbgetpri()
{
int pri;
for (pri = 0x17; pri > 0x14; ) {
if (rcvec && rcvec != 0x200) /* interrupted at pri */
break;
pri--;
splx(pri - 1);
}
spl0();
return (pri);
}
#endif
/*
* The common attach routines:
* Allocates interrupt vectors.
* Puts correct values in uba_softc.
* Calls the scan routine to search for uba devices.
*/
void
uba_attach(sc, iopagephys)
struct uba_softc *sc;
paddr_t iopagephys;
{
/*
* Set last free interrupt vector for devices with
* programmable interrupt vectors. Use is to decrement
* this number and use result as interrupt vector.
*/
sc->uh_lastiv = 0x200;
SIMPLEQ_INIT(&sc->uh_resq);
/*
* Allocate place for unibus memory in virtual space.
*/
sc->uh_iopage = (caddr_t)vax_map_physmem(iopagephys, UBAIOPAGES);
if (sc->uh_iopage == 0)
return; /* vax_map_physmem() will complain for us */
/*
* Initialize the UNIBUS, by freeing the map
* registers and the buffered data path registers
*/
sc->uh_extspace = (char *)malloc(EXTENT_FIXED_STORAGE_SIZE(UAMSIZ),
M_DEVBUF, M_NOWAIT);
if (sc->uh_extspace == NULL)
panic("uba_attach");
ubainitmaps(sc);
/*
* Map the first page of UNIBUS i/o space to the first page of memory
* for devices which will need to dma to produce an interrupt.
*/
*(int *)(&sc->uh_mr[0]) = UBAMR_MRV;
if (sc->uh_beforescan)
(*sc->uh_beforescan)(sc);
/*
* Now start searching for devices.
*/
config_search(ubasearch,(struct device *)sc, NULL);
if (sc->uh_afterscan)
(*sc->uh_afterscan)(sc);
}
int
ubasearch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct uba_softc *sc = (struct uba_softc *)parent;
struct uba_attach_args ua;
int i, vec, br;
ua.ua_addr = (caddr_t)((int)sc->uh_iopage + ubdevreg(cf->cf_loc[0]));
ua.ua_reset = NULL;
if (badaddr(ua.ua_addr, 2) || (sc->uh_errchk ? (*sc->uh_errchk)(sc):0))
goto forgetit;
scb_vecref(0, 0); /* Clear vector ref */
i = (*cf->cf_attach->ca_match) (parent, cf, &ua);
if (sc->uh_errchk)
if ((*sc->uh_errchk)(sc))
goto forgetit;
if (i == 0)
goto forgetit;
i = scb_vecref(&vec, &br);
if (i == 0)
goto fail;
if (vec == 0)
goto fail;
scb_vecalloc(vec, ua.ua_ivec, cf->cf_unit, SCB_ISTACK);
if (ua.ua_reset) { /* device wants ubareset */
if (sc->uh_resno == 0) {
sc->uh_reset = malloc(1024, M_DEVBUF, M_NOWAIT);
if (sc->uh_reset == NULL)
panic("ubasearch");
sc->uh_resarg = (int *)sc->uh_reset + 128;
}
#ifdef DIAGNOSTIC
if (sc->uh_resno > 127) {
printf("%s: Expand reset table, skipping reset %s%d\n",
sc->uh_dev.dv_xname, cf->cf_driver->cd_name,
cf->cf_unit);
} else
#endif
{
sc->uh_resarg[sc->uh_resno] = cf->cf_unit;
sc->uh_reset[sc->uh_resno++] = ua.ua_reset;
}
}
ua.ua_br = br;
ua.ua_cvec = vec;
ua.ua_iaddr = cf->cf_loc[0];
config_attach(parent, cf, &ua, ubaprint);
return 0;
fail:
printf("%s%d at %s csr %o %s\n",
cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname,
cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt"));
forgetit:
return 0;
}
/*
* Print out some interesting info common to all unibus devices.
*/
int
ubaprint(aux, uba)
void *aux;
const char *uba;
{
struct uba_attach_args *ua = aux;
printf(" csr %o vec %o ipl %x", ua->ua_iaddr,
ua->ua_cvec & 511, ua->ua_br);
return UNCONF;
}
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