void via_irq_enable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
#ifdef DEBUG_IRQUSE
printk(KERN_DEBUG "via_irq_enable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = IER_SET_BIT(irq_idx);
} else if (irq_src == 2) {
if (irq != IRQ_MAC_NUBUS || nubus_disabled == 0)
via2[gIER] = IER_SET_BIT(irq_idx);
} else if (irq_src == 7) {
switch (macintosh_config->via_type) {
case MAC_VIA_II:
case MAC_VIA_QUADRA:
nubus_disabled &= ~(1 << irq_idx);
/* Enable the CA1 interrupt when no slot is disabled. */
if (!nubus_disabled)
via2[gIER] = IER_SET_BIT(1);
break;
case MAC_VIA_IICI:
/* On RBV, enable the slot interrupt.
* SIER works like IER.
*/
via2[rSIER] = IER_SET_BIT(irq_idx);
break;
}
}
}
void via_irq_disable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
#ifdef DEBUG_IRQUSE
printk(KERN_DEBUG "via_irq_disable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = irq_bit;
} else if (irq_src == 2) {
via2[gIER] = irq_bit;
} else if (irq_src == 7) {
if (rbv_present) {
/* disable the slot interrupt. SIER works like IER. */
via2[rSIER] = IER_CLR_BIT(irq_idx);
} else {
/* disable the nubus irq by changing dir to output */
/* except on PMU */
if ((macintosh_config->adb_type != MAC_ADB_PB1) &&
(macintosh_config->adb_type != MAC_ADB_PB2)) {
via2[vDirA] |= irq_bit;
}
}
nubus_active &= ~irq_bit;
}
}
void psc_irq_clear(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int pIFR = pIERbase + (irq_src << 4);
psc_write_byte(pIFR, 1 << irq_idx);
}
void mac_disable_irq (unsigned int irq)
{
int irq_src = IRQ_SRC(irq);
switch(irq_src) {
case 1: via_irq_disable(irq);
break;
case 2:
case 7: if (oss_present) {
oss_irq_disable(irq);
} else {
via_irq_disable(irq);
}
break;
case 3:
case 4:
case 5:
case 6: if (psc_present) {
psc_irq_disable(irq);
} else if (oss_present) {
oss_irq_disable(irq);
} else if (irq_src == 4) {
scc_irq_disable(irq);
}
break;
case 8: if (baboon_present) {
baboon_irq_disable(irq);
}
break;
}
}
static void mac_enable_irq(unsigned int irq)
{
int irq_src = IRQ_SRC(irq);
switch(irq_src) {
case 1:
via_irq_enable(irq);
break;
case 2:
case 7:
if (oss_present)
oss_irq_enable(irq);
else
via_irq_enable(irq);
break;
case 3:
case 4:
case 5:
case 6:
if (psc_present)
psc_irq_enable(irq);
else if (oss_present)
oss_irq_enable(irq);
else if (irq_src == 4)
scc_irq_enable(irq);
break;
case 8:
if (baboon_present)
baboon_irq_enable(irq);
break;
}
}
void mac_clear_irq( unsigned int irq )
{
switch(IRQ_SRC(irq)) {
case 1: via_irq_clear(irq);
break;
case 2:
case 7: if (oss_present) {
oss_irq_clear(irq);
} else {
via_irq_clear(irq);
}
break;
case 3:
case 4:
case 5:
case 6: if (psc_present) {
psc_irq_clear(irq);
} else if (oss_present) {
oss_irq_clear(irq);
}
break;
case 8: if (baboon_present) {
baboon_irq_clear(irq);
}
break;
}
}
int mac_irq_pending(unsigned int irq)
{
switch(IRQ_SRC(irq)) {
case 1:
return via_irq_pending(irq);
case 2:
case 7:
if (oss_present)
return oss_irq_pending(irq);
else
return via_irq_pending(irq);
case 3:
case 5:
case 6:
if (psc_present)
return psc_irq_pending(irq);
else if (oss_present)
return oss_irq_pending(irq);
break;
case 4:
if (psc_present)
return psc_irq_pending(irq);
break;
}
return 0;
}
void mac_irq_disable(struct irq_data *data)
{
int irq = data->irq;
int irq_src = IRQ_SRC(irq);
switch(irq_src) {
case 1:
via_irq_disable(irq);
break;
case 2:
case 7:
if (oss_present)
oss_irq_disable(irq);
else
via_irq_disable(irq);
break;
case 3:
case 5:
case 6:
if (psc_present)
psc_irq_disable(irq);
else if (oss_present)
oss_irq_disable(irq);
break;
case 4:
if (psc_present)
psc_irq_disable(irq);
break;
case 8:
if (baboon_present)
baboon_irq_disable(irq);
break;
}
}
void oss_irq_disable(int irq) {
#ifdef DEBUG_IRQUSE
printk("oss_irq_disable(%d)\n", irq);
#endif
switch(irq) {
case IRQ_MAC_SCC:
oss->irq_level[OSS_IOPSCC] = 0;
return;
case IRQ_MAC_ADB:
oss->irq_level[OSS_IOPISM] = 0;
return;
case IRQ_MAC_SCSI:
oss->irq_level[OSS_SCSI] = 0;
return;
case IRQ_NUBUS_9:
case IRQ_NUBUS_A:
case IRQ_NUBUS_B:
case IRQ_NUBUS_C:
case IRQ_NUBUS_D:
case IRQ_NUBUS_E:
irq -= NUBUS_SOURCE_BASE;
oss->irq_level[irq] = 0;
return;
}
if (IRQ_SRC(irq) == 1)
via_irq_disable(irq);
}
void via_irq_disable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
#ifdef DEBUG_IRQUSE
printk(KERN_DEBUG "via_irq_disable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = IER_CLR_BIT(irq_idx);
} else if (irq_src == 2) {
via2[gIER] = IER_CLR_BIT(irq_idx);
} else if (irq_src == 7) {
switch (macintosh_config->via_type) {
case MAC_VIA_II:
case MAC_VIA_QUADRA:
nubus_disabled |= 1 << irq_idx;
if (nubus_disabled)
via2[gIER] = IER_CLR_BIT(1);
break;
case MAC_VIA_IICI:
via2[rSIER] = IER_CLR_BIT(irq_idx);
break;
}
}
}
int psc_irq_pending(int irq)
{
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int pIFR = pIERbase + (irq_src << 4);
return psc_read_byte(pIFR) & (1 << irq_idx);
}
void psc_irq_disable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int pIER = pIERbase + (irq_src << 4);
#ifdef DEBUG_IRQUSE
printk("psc_irq_disable(%d)\n", irq);
#endif
psc_write_byte(pIER, 1 << irq_idx);
}
void via_irq_enable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
#ifdef DEBUG_IRQUSE
printk(KERN_DEBUG "via_irq_enable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = irq_bit | 0x80;
} else if (irq_src == 2) {
/*
* Set vPCR for SCSI interrupts (but not on RBV)
*/
if ((irq_idx == 0) && !rbv_present) {
if (macintosh_config->scsi_type == MAC_SCSI_OLD) {
/* CB2 (IRQ) indep. input, positive edge */
/* CA2 (DRQ) indep. input, positive edge */
via2[vPCR] = 0x66;
} else {
/* CB2 (IRQ) indep. input, negative edge */
/* CA2 (DRQ) indep. input, negative edge */
via2[vPCR] = 0x22;
}
}
via2[gIER] = irq_bit | 0x80;
} else if (irq_src == 7) {
if (rbv_present) {
/* enable the slot interrupt. SIER works like IER. */
via2[rSIER] = IER_SET_BIT(irq_idx);
} else {
/* Make sure the bit is an input, to enable the irq */
/* But not on PowerBooks, that's ADB... */
if ((macintosh_config->adb_type != MAC_ADB_PB1) &&
(macintosh_config->adb_type != MAC_ADB_PB2)) {
switch(macintosh_config->ident)
{
case MAC_MODEL_II:
case MAC_MODEL_IIX:
case MAC_MODEL_IICX:
case MAC_MODEL_SE30:
via2[vDirA] &= (~irq_bit | 0xc0);
break;
default:
via2[vDirA] &= ~irq_bit;
}
}
}
nubus_active |= irq_bit;
}
}
void via_irq_clear(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
if (irq_src == 1) {
via1[vIFR] = irq_bit;
} else if (irq_src == 2) {
via2[gIFR] = irq_bit | rbv_clear;
} else if (irq_src == 7) {
/* FIXME: hmm.. */
}
}
void via_irq_clear(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
if (irq_src == 1) {
via1[vIFR] = irq_bit;
} else if (irq_src == 2) {
via2[gIFR] = irq_bit | rbv_clear;
} else if (irq_src == 7) {
/* FIXME: There is no way to clear an individual nubus slot
* IRQ flag, other than getting the device to do it.
*/
}
}
int via_irq_pending(int irq)
{
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
if (irq_src == 1) {
return via1[vIFR] & irq_bit;
} else if (irq_src == 2) {
return via2[gIFR] & irq_bit;
} else if (irq_src == 7) {
return ~via2[gBufA] & irq_bit;
}
return 0;
}
int via_irq_pending(int irq)
{
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
if (irq_src == 1) {
return via1[vIFR] & irq_bit;
} else if (irq_src == 2) {
return via2[gIFR] & irq_bit;
} else if (irq_src == 7) {
/* Always 0 for MAC_VIA_QUADRA if the slot irq is disabled. */
return ~via2[gBufA] & irq_bit;
}
return 0;
}
void via_irq_enable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
#ifdef DEBUG_IRQUSE
printk(KERN_DEBUG "via_irq_enable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = IER_SET_BIT(irq_idx);
} else if (irq_src == 2) {
if (irq != IRQ_MAC_NUBUS || nubus_disabled == 0)
via2[gIER] = IER_SET_BIT(irq_idx);
} else if (irq_src == 7) {
switch (macintosh_config->via_type) {
case MAC_VIA_II:
nubus_disabled &= ~(1 << irq_idx);
/* Enable the CA1 interrupt when no slot is disabled. */
if (!nubus_disabled)
via2[gIER] = IER_SET_BIT(1);
break;
case MAC_VIA_IIci:
/* On RBV, enable the slot interrupt.
* SIER works like IER.
*/
via2[rSIER] = IER_SET_BIT(irq_idx);
break;
case MAC_VIA_QUADRA:
/* Make the port A line an input to enable the slot irq.
* But not on PowerBooks, that's ADB.
*/
if ((macintosh_config->adb_type != MAC_ADB_PB1) &&
(macintosh_config->adb_type != MAC_ADB_PB2))
via2[vDirA] &= ~(1 << irq_idx);
break;
}
}
}
void via_irq_enable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
#ifdef DEBUG_IRQUSE
printk("via_irq_enable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = irq_bit | 0x80;
} else if (irq_src == 2) {
/*
* Set vPCR for SCSI interrupts (but not on RBV)
*/
if ((irq_idx == 0) && !rbv_present) {
if (macintosh_config->scsi_type == MAC_SCSI_OLD) {
/* CB2 (IRQ) indep. input, positive edge */
/* CA2 (DRQ) indep. input, positive edge */
via2[vPCR] = 0x66;
} else {
/* CB2 (IRQ) indep. input, negative edge */
/* CA2 (DRQ) indep. input, negative edge */
via2[vPCR] = 0x22;
}
}
via2[gIER] = irq_bit | 0x80;
} else if (irq_src == 7) {
if (rbv_present) {
/* enable the slot interrupt. SIER works like IER. */
via2[rSIER] = IER_SET_BIT(irq_idx);
} else {
/* Make sure the bit is an input, to enable the irq */
via2[vDirA] &= ~irq_bit;
}
nubus_active |= irq_bit;
}
}
void via_irq_disable(int irq) {
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
#ifdef DEBUG_IRQUSE
printk("via_irq_disable(%d)\n", irq);
#endif
if (irq_src == 1) {
via1[vIER] = irq_bit;
} else if (irq_src == 2) {
via2[gIER] = irq_bit;
} else if (irq_src == 7) {
if (rbv_present) {
/* disable the slot interrupt. SIER works like IER. */
via2[rSIER] = IER_CLR_BIT(irq_idx);
} else {
/* disable the nubus irq by changing dir to output */
via2[vDirA] |= irq_bit;
}
nubus_active &= ~irq_bit;
}
}
int show_mac_interrupts(struct seq_file *p, void *v)
{
int i;
irq_node_t *node;
char *base;
/* Don't do Nubus interrupts in this loop; we do them separately */
/* below so that we can print slot numbers instead of IRQ numbers */
for (i = VIA1_SOURCE_BASE ; i < NUM_MAC_SOURCES ; ++i) {
/* Nonexistant interrupt or nothing registered; skip it. */
if ((node = mac_irq_list[i]) == NULL) continue;
if (node->flags & IRQ_FLG_STD) continue;
base = "";
switch(IRQ_SRC(i)) {
case 1: base = "via1";
break;
case 2: if (oss_present) {
base = "oss";
} else {
base = "via2";
}
break;
case 3:
case 4:
case 5:
case 6: if (psc_present) {
base = "psc";
} else if (oss_present) {
base = "oss";
} else {
if (IRQ_SRC(i) == 4) base = "scc";
}
break;
case 7: base = "nbus";
break;
case 8: base = "bbn";
break;
}
seq_printf(p, "%4s %2d: %10u ", base, i, kstat_cpu(0).irqs[i]);
do {
if (node->flags & IRQ_FLG_FAST) {
seq_puts(p, "F ");
} else if (node->flags & IRQ_FLG_SLOW) {
seq_puts(p, "S ");
} else {
seq_puts(p, " ");
}
seq_printf(p, "%s\n", node->devname);
if ((node = node->next)) {
seq_puts(p, " ");
}
} while(node);
}
return 0;
}
