implement interrupt enable/disable and mapping as described in
the Digital Semiconductor AlphaPC 164 Motherboard Technical Reference Manual. This may not work, but it's the best i can do with the documentation I have.
This commit is contained in:
cgd
parent
ccc668e0d7
commit
e35cd5615f
|
|
@ -1,4 +1,4 @@
|
||||||
/* $NetBSD: pci_eb164.c,v 1.2 1996/11/13 21:13:30 cgd Exp $ */
|
/* $NetBSD: pci_eb164.c,v 1.3 1996/11/17 02:30:25 cgd Exp $ */
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
||||||
|
|
@ -64,8 +64,21 @@ void *dec_eb164_intr_establish __P((void *, pci_intr_handle_t,
|
||||||
int, int (*func)(void *), void *));
|
int, int (*func)(void *), void *));
|
||||||
void dec_eb164_intr_disestablish __P((void *, void *));
|
void dec_eb164_intr_disestablish __P((void *, void *));
|
||||||
|
|
||||||
void eb164_pci_strayintr __P((int irq));
|
#define EB164_SIO_IRQ 4
|
||||||
|
#define EB164_MAX_IRQ 24
|
||||||
|
#define PCI_STRAY_MAX 5
|
||||||
|
|
||||||
|
struct alpha_shared_intr *eb164_pci_intr;
|
||||||
|
#ifdef EVCNT_COUNTERS
|
||||||
|
struct evcnt eb164_intr_evcnt;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
bus_space_tag_t eb164_intrgate_iot;
|
||||||
|
bus_space_handle_t eb164_intrgate_ioh;
|
||||||
|
|
||||||
void eb164_iointr __P((void *framep, unsigned long vec));
|
void eb164_iointr __P((void *framep, unsigned long vec));
|
||||||
|
void eb164_enable_intr __P((int irq));
|
||||||
|
void eb164_disable_intr __P((int irq));
|
||||||
|
|
||||||
void
|
void
|
||||||
pci_eb164_pickintr(ccp)
|
pci_eb164_pickintr(ccp)
|
||||||
|
|
@ -73,6 +86,7 @@ pci_eb164_pickintr(ccp)
|
||||||
{
|
{
|
||||||
bus_space_tag_t iot = ccp->cc_iot;
|
bus_space_tag_t iot = ccp->cc_iot;
|
||||||
pci_chipset_tag_t pc = &ccp->cc_pc;
|
pci_chipset_tag_t pc = &ccp->cc_pc;
|
||||||
|
int i;
|
||||||
|
|
||||||
pc->pc_intr_v = ccp;
|
pc->pc_intr_v = ccp;
|
||||||
pc->pc_intr_map = dec_eb164_intr_map;
|
pc->pc_intr_map = dec_eb164_intr_map;
|
||||||
|
|
@ -80,20 +94,24 @@ pci_eb164_pickintr(ccp)
|
||||||
pc->pc_intr_establish = dec_eb164_intr_establish;
|
pc->pc_intr_establish = dec_eb164_intr_establish;
|
||||||
pc->pc_intr_disestablish = dec_eb164_intr_disestablish;
|
pc->pc_intr_disestablish = dec_eb164_intr_disestablish;
|
||||||
|
|
||||||
|
eb164_intrgate_iot = iot;
|
||||||
|
if (bus_space_map(eb164_intrgate_iot, 0x804, 3, 0,
|
||||||
|
&eb164_intrgate_ioh) != 0)
|
||||||
|
panic("pci_eb164_pickintr: couldn't map interrupt PLD");
|
||||||
|
for (i = 0; i < EB164_MAX_IRQ; i++)
|
||||||
|
eb164_disable_intr(i);
|
||||||
|
|
||||||
|
eb164_pci_intr = alpha_shared_intr_alloc(EB164_MAX_IRQ);
|
||||||
|
for (i = 0; i < EB164_MAX_IRQ; i++)
|
||||||
|
alpha_shared_intr_set_maxstrays(eb164_pci_intr, i,
|
||||||
|
PCI_STRAY_MAX);
|
||||||
|
|
||||||
#if NSIO
|
#if NSIO
|
||||||
sio_intr_setup(iot);
|
sio_intr_setup(iot);
|
||||||
|
eb164_enable_intr(EB164_SIO_IRQ);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
set_iointr(eb164_iointr);
|
set_iointr(eb164_iointr);
|
||||||
|
|
||||||
#if 0 /* XXX */
|
|
||||||
#if NSIO
|
|
||||||
eb164_enable_intr(KN20AA_PCEB_IRQ);
|
|
||||||
#if 0 /* XXX init PCEB interrupt handler? */
|
|
||||||
eb164_attach_intr(&eb164_pci_intrs[KN20AA_PCEB_IRQ], ???, ???, ???);
|
|
||||||
#endif
|
|
||||||
#endif
|
|
||||||
#endif /* 0 XXX */
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int
|
int
|
||||||
|
|
@ -103,16 +121,10 @@ dec_eb164_intr_map(ccv, bustag, buspin, line, ihp)
|
||||||
int buspin, line;
|
int buspin, line;
|
||||||
pci_intr_handle_t *ihp;
|
pci_intr_handle_t *ihp;
|
||||||
{
|
{
|
||||||
|
|
||||||
printf("dec_eb164_intr_map(0x%lx, %d, %d)\n", bustag, buspin, line);
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
struct cia_config *ccp = ccv;
|
struct cia_config *ccp = ccv;
|
||||||
pci_chipset_tag_t pc = &ccp->cc_pc;
|
pci_chipset_tag_t pc = &ccp->cc_pc;
|
||||||
int device;
|
int device;
|
||||||
int eb164_irq;
|
int eb164_irq, pinbase, pinoff;
|
||||||
void *ih;
|
|
||||||
|
|
||||||
if (buspin == 0) {
|
if (buspin == 0) {
|
||||||
/* No IRQ used. */
|
/* No IRQ used. */
|
||||||
|
|
@ -123,55 +135,64 @@ dec_eb164_intr_map(ccv, bustag, buspin, line, ihp)
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
|
||||||
* Slot->interrupt translation. Appears to work, though it
|
|
||||||
* may not hold up forever.
|
|
||||||
*
|
|
||||||
* The DEC engineers who did this hardware obviously engaged
|
|
||||||
* in random drug testing.
|
|
||||||
*/
|
|
||||||
pci_decompose_tag(pc, bustag, NULL, &device, NULL);
|
pci_decompose_tag(pc, bustag, NULL, &device, NULL);
|
||||||
switch (device) {
|
switch (device) {
|
||||||
case 11:
|
#if 0 /* THIS CODE SHOULD NEVER BE CALLED FOR THE SIO */
|
||||||
case 12:
|
case 8: /* SIO */
|
||||||
eb164_irq = ((device - 11) + 0) * 4;
|
eb164_irq = 4;
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case 7:
|
|
||||||
eb164_irq = 8;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 9:
|
|
||||||
eb164_irq = 12;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 6: /* 21040 on AlphaStation 500 */
|
|
||||||
eb164_irq = 13;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 8:
|
|
||||||
eb164_irq = 16;
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
#ifdef KN20AA_BOGUS_IRQ_FROB
|
|
||||||
*ihp = 0xdeadbeef;
|
|
||||||
printf("\n\n BOGUS INTERRUPT MAPPING: dev %d, pin %d\n",
|
|
||||||
device, buspin);
|
|
||||||
return (0);
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
case 11:
|
||||||
|
eb164_irq = 5; /* IDE */
|
||||||
|
break;
|
||||||
|
|
||||||
|
case 6:
|
||||||
|
case 7:
|
||||||
|
case 8:
|
||||||
|
case 9:
|
||||||
|
switch (buspin) {
|
||||||
|
case 1:
|
||||||
|
pinbase = 0;
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
case 3:
|
||||||
|
case 4:
|
||||||
|
pinbase = (buspin * 4) - 1;
|
||||||
|
break;
|
||||||
|
#ifdef DIAGNOSTIC
|
||||||
|
default:
|
||||||
|
panic("dec_eb164_intr_map: slot buspin switch");
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
switch (device) {
|
||||||
|
case 5:
|
||||||
|
pinoff = 2;
|
||||||
|
break;
|
||||||
|
|
||||||
|
case 6:
|
||||||
|
case 7:
|
||||||
|
case 9:
|
||||||
|
pinoff = device - 6;
|
||||||
|
break;
|
||||||
|
#ifdef DIAGNOSTIC
|
||||||
|
default:
|
||||||
|
panic("dec_eb164_intr_map: slot device switch");
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
eb164_irq = pinoff + pinbase;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
panic("pci_eb164_map_int: invalid device number %d\n",
|
panic("pci_eb164_map_int: invalid device number %d\n",
|
||||||
device);
|
device);
|
||||||
}
|
}
|
||||||
|
|
||||||
eb164_irq += buspin - 1;
|
if (eb164_irq > EB164_MAX_IRQ)
|
||||||
if (eb164_irq > KN20AA_MAX_IRQ)
|
|
||||||
panic("pci_eb164_map_int: eb164_irq too large (%d)\n",
|
panic("pci_eb164_map_int: eb164_irq too large (%d)\n",
|
||||||
eb164_irq);
|
eb164_irq);
|
||||||
|
|
||||||
*ihp = eb164_irq;
|
*ihp = eb164_irq;
|
||||||
return (0);
|
return (0);
|
||||||
#endif
|
|
||||||
}
|
}
|
||||||
|
|
||||||
const char *
|
const char *
|
||||||
|
|
@ -184,23 +205,10 @@ dec_eb164_intr_string(ccv, ih)
|
||||||
#endif
|
#endif
|
||||||
static char irqstr[15]; /* 11 + 2 + NULL + sanity */
|
static char irqstr[15]; /* 11 + 2 + NULL + sanity */
|
||||||
|
|
||||||
sprintf(irqstr, "BOGUS");
|
if (ih > EB164_MAX_IRQ)
|
||||||
return (irqstr);
|
panic("dec_eb164_intr_string: bogus eb164 IRQ 0x%x\n", ih);
|
||||||
|
|
||||||
#if 0 /* XXX */
|
|
||||||
#ifdef KN20AA_BOGUS_IRQ_FROB
|
|
||||||
if (ih == 0xdeadbeef) {
|
|
||||||
sprintf(irqstr, "BOGUS");
|
|
||||||
return (irqstr);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
if (ih > KN20AA_MAX_IRQ)
|
|
||||||
panic("dec_eb164_a50_intr_string: bogus eb164 IRQ 0x%x\n",
|
|
||||||
ih);
|
|
||||||
|
|
||||||
sprintf(irqstr, "eb164 irq %d", ih);
|
sprintf(irqstr, "eb164 irq %d", ih);
|
||||||
return (irqstr);
|
return (irqstr);
|
||||||
#endif /* 0 XXX */
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void *
|
void *
|
||||||
|
|
@ -210,44 +218,29 @@ dec_eb164_intr_establish(ccv, ih, level, func, arg)
|
||||||
int level;
|
int level;
|
||||||
int (*func) __P((void *));
|
int (*func) __P((void *));
|
||||||
{
|
{
|
||||||
|
#if 0
|
||||||
printf("dec_eb164_intr_establish(0x%lx, %d, %p, %p)\n", ih, level, func, arg);
|
struct cia_config *ccp = ccv;
|
||||||
return ((void *)0xbabefacedeadbeef);
|
#endif
|
||||||
|
|
||||||
#if 0 /* XXX */
|
|
||||||
struct cia_config *ccp = ccv;
|
|
||||||
void *cookie;
|
void *cookie;
|
||||||
|
|
||||||
#ifdef KN20AA_BOGUS_IRQ_FROB
|
if (ih > EB164_MAX_IRQ)
|
||||||
if (ih == 0xdeadbeef) {
|
panic("dec_eb164_intr_establish: bogus eb164 IRQ 0x%x\n", ih);
|
||||||
int i;
|
|
||||||
char chars[10];
|
|
||||||
|
|
||||||
printf("dec_eb164_intr_establish: BOGUS IRQ\n");
|
cookie = alpha_shared_intr_establish(eb164_pci_intr, ih, IST_LEVEL,
|
||||||
do {
|
level, func, arg, "eb164 irq");
|
||||||
printf("IRQ to enable? ");
|
|
||||||
getstr(chars, 10);
|
|
||||||
i = atoi(chars);
|
|
||||||
} while (i < 0 || i > 32);
|
|
||||||
printf("ENABLING IRQ %d\n", i);
|
|
||||||
eb164_enable_intr(i);
|
|
||||||
return ((void *)0xbabefacedeadbeef);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
if (ih > KN20AA_MAX_IRQ)
|
|
||||||
panic("dec_eb164_intr_establish: bogus eb164 IRQ 0x%x\n",
|
|
||||||
ih);
|
|
||||||
|
|
||||||
cookie = eb164_attach_intr(&eb164_pci_intrs[ih], level, func, arg);
|
if (cookie != NULL && alpha_shared_intr_isactive(eb164_pci_intr, ih))
|
||||||
eb164_enable_intr(ih);
|
eb164_enable_intr(ih);
|
||||||
return (cookie);
|
return (cookie);
|
||||||
#endif /* XXX */
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void
|
void
|
||||||
dec_eb164_intr_disestablish(ccv, cookie)
|
dec_eb164_intr_disestablish(ccv, cookie)
|
||||||
void *ccv, *cookie;
|
void *ccv, *cookie;
|
||||||
{
|
{
|
||||||
|
#if 0
|
||||||
|
struct cia_config *ccp = ccv;
|
||||||
|
#endif
|
||||||
|
|
||||||
panic("dec_eb164_intr_disestablish not implemented"); /* XXX */
|
panic("dec_eb164_intr_disestablish not implemented"); /* XXX */
|
||||||
}
|
}
|
||||||
|
|
@ -257,6 +250,67 @@ eb164_iointr(framep, vec)
|
||||||
void *framep;
|
void *framep;
|
||||||
unsigned long vec;
|
unsigned long vec;
|
||||||
{
|
{
|
||||||
|
int irq;
|
||||||
|
|
||||||
|
if (vec >= 0x900) {
|
||||||
|
if (vec >= 0x900 + (EB164_MAX_IRQ << 4))
|
||||||
|
panic("eb164_iointr: vec 0x%x out of range\n", vec);
|
||||||
|
irq = (vec - 0x900) >> 4;
|
||||||
|
|
||||||
|
#ifdef EVCNT_COUNTERS
|
||||||
|
eb164_intr_evcnt.ev_count++;
|
||||||
|
#else
|
||||||
|
if (EB164_MAX_IRQ != INTRCNT_EB164_IRQ_LEN)
|
||||||
|
panic("eb164 interrupt counter sizes inconsistent");
|
||||||
|
intrcnt[INTRCNT_EB164_IRQ + irq]++;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
if (!alpha_shared_intr_dispatch(eb164_pci_intr, irq)) {
|
||||||
|
alpha_shared_intr_stray(eb164_pci_intr, irq,
|
||||||
|
"eb164 irq");
|
||||||
|
if (eb164_pci_intr[irq].intr_nstrays ==
|
||||||
|
eb164_pci_intr[irq].intr_maxstrays)
|
||||||
|
eb164_disable_intr(irq);
|
||||||
|
}
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
#if NSIO
|
||||||
|
if (vec >= 0x800) {
|
||||||
|
sio_iointr(framep, vec);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
panic("eb164_iointr: weird vec 0x%x\n", vec);
|
panic("eb164_iointr: weird vec 0x%x\n", vec);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
u_int8_t eb164_intr_mask[3] = { 0xff, 0xff, 0xff };
|
||||||
|
|
||||||
|
void
|
||||||
|
eb164_enable_intr(irq)
|
||||||
|
int irq;
|
||||||
|
{
|
||||||
|
int byte = (irq / 8), bit = (irq % 8);
|
||||||
|
|
||||||
|
#if 1
|
||||||
|
printf("eb164_enable_intr: enabling %d (%d:%d)\n", irq, byte, bit);
|
||||||
|
#endif
|
||||||
|
eb164_intr_mask[byte] &= ~(1 << bit);
|
||||||
|
|
||||||
|
bus_space_write_1(eb164_intrgate_iot, eb164_intrgate_ioh, byte,
|
||||||
|
eb164_intr_mask[byte]);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
eb164_disable_intr(irq)
|
||||||
|
int irq;
|
||||||
|
{
|
||||||
|
int byte = (irq / 8), bit = (irq % 8);
|
||||||
|
|
||||||
|
#if 1
|
||||||
|
printf("eb164_disable_intr: disabling %d (%d:%d)\n", irq, byte, bit);
|
||||||
|
#endif
|
||||||
|
eb164_intr_mask[byte] |= (1 << bit);
|
||||||
|
|
||||||
|
bus_space_write_1(eb164_intrgate_iot, eb164_intrgate_ioh, byte,
|
||||||
|
eb164_intr_mask[byte]);
|
||||||
|
}
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue