diff options
Diffstat (limited to 'arch/m68k/mac/macints.c')
| -rw-r--r-- | arch/m68k/mac/macints.c | 45 |
1 files changed, 10 insertions, 35 deletions
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c index 74f5a97..5c1a6b2 100644 --- a/arch/m68k/mac/macints.c +++ b/arch/m68k/mac/macints.c @@ -26,10 +26,6 @@ * - slot 6: timer 1 (not on IIci) * - slot 7: status of IRQ; signals 'any enabled int.' * - * 2 - OSS (IIfx only?) - * - slot 0: SCSI interrupt - * - slot 1: Sound interrupt - * * Levels 3-6 vary by machine type. For VIA or RBV Macintoshes: * * 3 - unused (?) @@ -54,21 +50,18 @@ * * 6 - VIA1 * - * For OSS Macintoshes (IIfx only at this point): + * For OSS Macintoshes (IIfx only), we apply an interrupt mapping similar to + * the Quadra (A/UX) mapping: * - * 3 - Nubus interrupt - * - slot 0: Slot $9 - * - slot 1: Slot $A - * - slot 2: Slot $B - * - slot 3: Slot $C - * - slot 4: Slot $D - * - slot 5: Slot $E + * 1 - ISM IOP (ADB) * - * 4 - SCC IOP + * 2 - SCSI * - * 5 - ISM IOP (ADB?) + * 3 - NuBus * - * 6 - unused + * 4 - SCC IOP + * + * 6 - VIA1 * * For PSC Macintoshes (660AV, 840AV): * @@ -112,14 +105,6 @@ * case. They're hidden behind the Nubus slot $C interrupt thus adding a * third layer of indirection. Why oh why did the Apple engineers do that? * - * - We support "fast" and "slow" handlers, just like the Amiga port. The - * fast handlers are called first and with all interrupts disabled. They - * are expected to execute quickly (hence the name). The slow handlers are - * called last with interrupts enabled and the interrupt level restored. - * They must therefore be reentrant. - * - * TODO: - * */ #include <linux/types.h> @@ -216,8 +201,6 @@ void mac_irq_enable(struct irq_data *data) switch(irq_src) { case 1: - via_irq_enable(irq); - break; case 2: case 7: if (oss_present) @@ -226,6 +209,7 @@ void mac_irq_enable(struct irq_data *data) via_irq_enable(irq); break; case 3: + case 4: case 5: case 6: if (psc_present) @@ -233,10 +217,6 @@ void mac_irq_enable(struct irq_data *data) else if (oss_present) oss_irq_enable(irq); break; - case 4: - if (psc_present) - psc_irq_enable(irq); - break; case 8: if (baboon_present) baboon_irq_enable(irq); @@ -251,8 +231,6 @@ void mac_irq_disable(struct irq_data *data) switch(irq_src) { case 1: - via_irq_disable(irq); - break; case 2: case 7: if (oss_present) @@ -261,6 +239,7 @@ void mac_irq_disable(struct irq_data *data) via_irq_disable(irq); break; case 3: + case 4: case 5: case 6: if (psc_present) @@ -268,10 +247,6 @@ void mac_irq_disable(struct irq_data *data) 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); |