void  dec_6600_pciide_compat_intr_disestablish __P((void *, pci_chipset_tag_t, void *));
void  dec_6600_pciide_compat_intr_disestablish __P((void *, void *));
void *dec_6600_pciide_compat_intr_establish __P((void *, struct device *,    struct pci_attach_args *, int, int (*)(void *), void *));void  dec_6600_pciide_compat_intr_disestablish __P((void *, pci_chipset_tag_t,	    void *));struct alpha_shared_intr *dec_6600_pci_intr;void dec_6600_iointr __P((void *framep, unsigned long vec));extern void dec_6600_intr_enable __P((int irq));extern void dec_6600_intr_disable __P((int irq));voidpci_6600_pickintr(pcp)	struct tsp_config *pcp;{	bus_space_tag_t iot = pcp->pc_iot;	pci_chipset_tag_t pc = &pcp->pc_pc;#if 0	char *cp;#endif	int i;        pc->pc_intr_v = pcp;        pc->pc_intr_map = dec_6600_intr_map;        pc->pc_intr_string = dec_6600_intr_string;#if 0	pc->pc_intr_evcnt = dec_6600_intr_evcnt;#endif        pc->pc_intr_establish = dec_6600_intr_establish;        pc->pc_intr_disestablish = dec_6600_intr_disestablish;	pc->pc_pciide_compat_intr_establish = NULL;	/*	 * System-wide and Pchip-0-only logic...	 */	if (dec_6600_pci_intr == NULL) {		sioprimary = pcp;		pc->pc_pciide_compat_intr_establish =		    dec_6600_pciide_compat_intr_establish;		dec_6600_pci_intr = alpha_shared_intr_alloc(PCI_NIRQ);		for (i = 0; i < PCI_NIRQ; i++) {			alpha_shared_intr_set_maxstrays(dec_6600_pci_intr, i,			    PCI_STRAY_MAX);			alpha_shared_intr_set_private(dec_6600_pci_intr, i,			    sioprimary);#if 0			cp = alpha_shared_intr_string(dec_6600_pci_intr);			sprintf(cp, "irq %d", i);			evcnt_attach_dynamic(alpha_shared_intr_evcnt(			    dec_6600_pci_intr, 1), EVCNT_TYPE_INTR, NULL,			    "dec_6600", cp);#endif		}#if NSIO		sio_intr_setup(pc, iot);		dec_6600_intr_enable(55);	/* irq line for sio */#endif		set_iointr(dec_6600_iointr);	}}int     dec_6600_intr_map(acv, bustag, buspin, line, ihp)        void *acv;        pcitag_t bustag;         int buspin, line;        pci_intr_handle_t *ihp;{	struct tsp_config *pcp = acv;	pci_chipset_tag_t pc = &pcp->pc_pc;	int bus, device, function;	if (buspin == 0) {		/* No IRQ used. */		return 1;	}	if (buspin > 4) {		printf("intr_map: bad interrupt pin %d\n", buspin);		return 1;	}	alpha_pci_decompose_tag(pc, bustag, &bus, &device, &function);	/*	 * The console places the interrupt mapping in the "line" value.	 * A value of (char)-1 indicates there is no mapping.	 */	if (line == 0xff) {		printf("dec_6600_intr_map: no mapping for %d/%d/%d\n",		    bus, device, function);		return (1);	}#if NSIO == 0	if (DEC_6600_LINE_IS_ISA(line)) {		printf("dec_6600_intr_map: ISA IRQ %d for %d/%d/%d\n",		    DEC_6600_LINE_ISA_IRQ(line), bus, device, function);		return (1);	}#endif	if (DEC_6600_LINE_IS_ISA(line) == 0 && line >= PCI_NIRQ)		panic("dec_6600_intr_map: dec 6600 irq too large (%d)\n",		    line);	*ihp = line;	return (0);}const char *dec_6600_intr_string(acv, ih)	void *acv;	pci_intr_handle_t ih;{	static const char irqfmt[] = "dec 6600 irq %ld";	static char irqstr[sizeof irqfmt];#if NSIO	if (DEC_6600_LINE_IS_ISA(ih))		return (sio_intr_string(NULL /*XXX*/,		    DEC_6600_LINE_ISA_IRQ(ih)));#endif	snprintf(irqstr, sizeof irqstr, irqfmt, ih);	return (irqstr);}#if 0const struct evcnt *dec_6600_intr_evcnt(acv, ih)	void *acv;	pci_intr_handle_t ih;{#if NSIO	if (DEC_6600_LINE_IS_ISA(ih))		return (sio_intr_evcnt(NULL /*XXX*/,		    DEC_6600_LINE_ISA_IRQ(ih)));#endif	return (alpha_shared_intr_evcnt(dec_6600_pci_intr, ih));}#endifvoid *dec_6600_intr_establish(acv, ih, level, func, arg, name)        void *acv, *arg;        pci_intr_handle_t ih;        int level;        int (*func) __P((void *));	char *name;{	void *cookie;#if NSIO	if (DEC_6600_LINE_IS_ISA(ih))		return (sio_intr_establish(NULL /*XXX*/,		    DEC_6600_LINE_ISA_IRQ(ih), IST_LEVEL, level, func, arg,	            name));#endif	if (ih >= PCI_NIRQ)		panic("dec_6600_intr_establish: bogus dec 6600 IRQ 0x%lx\n",		    ih);	cookie = alpha_shared_intr_establish(dec_6600_pci_intr, ih, IST_LEVEL,	    level, func, arg, name);	if (cookie != NULL && alpha_shared_intr_isactive(dec_6600_pci_intr, ih))		dec_6600_intr_enable(ih);	return (cookie);}voiddec_6600_intr_disestablish(acv, cookie)        void *acv, *cookie;{	struct alpha_shared_intrhand *ih = cookie;	unsigned int irq = ih->ih_num;	int s;#if NSIO	/*	 * We have to determine if this is an ISA IRQ or not!  We do this	 * by checking to see if the intrhand points back to an intrhead	 * that points to the sioprimary TSP.  If not, it's an ISA IRQ.	 * Pretty disgusting, eh?	 */	if (ih->ih_intrhead->intr_private != sioprimary) {		sio_intr_disestablish(NULL /*XXX*/, cookie);		return;	}#endif 	s = splhigh();	alpha_shared_intr_disestablish(dec_6600_pci_intr, cookie, irqtype);	if (alpha_shared_intr_isactive(dec_6600_pci_intr, irq) == 0) {		dec_6600_intr_disable(irq);		alpha_shared_intr_set_dfltsharetype(dec_6600_pci_intr, irq,		    IST_NONE);	} 	splx(s);}voiddec_6600_iointr(framep, vec)	void *framep;	unsigned long vec;{	int irq; 	if (vec >= 0x900) {		irq = (vec - 0x900) >> 4;		if (irq >= PCI_NIRQ)			panic("iointr: irq %d is too high", irq);		if (!alpha_shared_intr_dispatch(dec_6600_pci_intr, irq)) {			alpha_shared_intr_stray(dec_6600_pci_intr, irq,			    irqtype);			if (ALPHA_SHARED_INTR_DISABLE(dec_6600_pci_intr, irq))				dec_6600_intr_disable(irq);		}		return;	}#if NSIO	if (vec >= 0x800) {		sio_iointr(framep, vec);		return;	}#endif	panic("iointr: weird vec 0x%lx\n", vec);}voiddec_6600_intr_enable(irq)	int irq;{	alpha_mb();	STQP(TS_C_DIM0) |= 1UL << irq;	alpha_mb();}voiddec_6600_intr_disable(irq)	int irq;{	alpha_mb();	STQP(TS_C_DIM0) &= ~(1UL << irq);	alpha_mb();}void *dec_6600_pciide_compat_intr_establish(v, dev, pa, chan, func, arg)	void *v;	struct device *dev;	struct pci_attach_args *pa;	int chan;	int (*func) __P((void *));	void *arg;{	pci_chipset_tag_t pc = pa->pa_pc;	void *cookie = NULL;	int bus, irq;	alpha_pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);	/*	 * If this isn't PCI bus #0 on the TSP that holds the PCI-ISA	 * bridge, all bets are off.	 */	if (bus != 0 || pc->pc_intr_v != sioprimary)		return (NULL);	irq = PCIIDE_COMPAT_IRQ(chan);#if NSIO	cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,	    func, arg, "dec 6600 irq");	if (cookie == NULL)		return (NULL);#endif	return (cookie);}