diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powermac/pic.c | 34 |
1 files changed, 6 insertions, 28 deletions
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index d8aedf135bb..7761aabfc29 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -52,13 +52,8 @@ struct device_node *of_irq_dflt_pic; /* Default addresses */ static volatile struct pmac_irq_hw __iomem *pmac_irq_hw[4]; -#define GC_LEVEL_MASK 0x3ff00000 -#define OHARE_LEVEL_MASK 0x1ff00000 -#define HEATHROW_LEVEL_MASK 0x1ff00000 - static int max_irqs; static int max_real_irqs; -static u32 level_mask[4]; static DEFINE_RAW_SPINLOCK(pmac_pic_lock); @@ -217,8 +212,7 @@ static irqreturn_t gatwick_action(int cpl, void *dev_id) for (irq = max_irqs; (irq -= 32) >= max_real_irqs; ) { int i = irq >> 5; bits = in_le32(&pmac_irq_hw[i]->event) | ppc_lost_interrupts[i]; - /* We must read level interrupts from the level register */ - bits |= (in_le32(&pmac_irq_hw[i]->level) & level_mask[i]); + bits |= in_le32(&pmac_irq_hw[i]->level); bits &= ppc_cached_irq_mask[i]; if (bits == 0) continue; @@ -248,8 +242,7 @@ static unsigned int pmac_pic_get_irq(void) for (irq = max_real_irqs; (irq -= 32) >= 0; ) { int i = irq >> 5; bits = in_le32(&pmac_irq_hw[i]->event) | ppc_lost_interrupts[i]; - /* We must read level interrupts from the level register */ - bits |= (in_le32(&pmac_irq_hw[i]->level) & level_mask[i]); + bits |= in_le32(&pmac_irq_hw[i]->level); bits &= ppc_cached_irq_mask[i]; if (bits == 0) continue; @@ -284,19 +277,14 @@ static int pmac_pic_host_match(struct irq_host *h, struct device_node *node) static int pmac_pic_host_map(struct irq_host *h, unsigned int virq, irq_hw_number_t hw) { - int level; - if (hw >= max_irqs) return -EINVAL; /* Mark level interrupts, set delayed disable for edge ones and set * handlers */ - level = !!(level_mask[hw >> 5] & (1UL << (hw & 0x1f))); - if (level) - irq_set_status_flags(virq, IRQ_LEVEL); - irq_set_chip_and_handler(virq, &pmac_pic, - level ? handle_level_irq : handle_edge_irq); + irq_set_status_flags(virq, IRQ_LEVEL); + irq_set_chip_and_handler(virq, &pmac_pic, handle_level_irq); return 0; } @@ -334,21 +322,14 @@ static void __init pmac_pic_probe_oldstyle(void) if ((master = of_find_node_by_name(NULL, "gc")) != NULL) { max_irqs = max_real_irqs = 32; - level_mask[0] = GC_LEVEL_MASK; } else if ((master = of_find_node_by_name(NULL, "ohare")) != NULL) { max_irqs = max_real_irqs = 32; - level_mask[0] = OHARE_LEVEL_MASK; - /* We might have a second cascaded ohare */ slave = of_find_node_by_name(NULL, "pci106b,7"); - if (slave) { + if (slave) max_irqs = 64; - level_mask[1] = OHARE_LEVEL_MASK; - } } else if ((master = of_find_node_by_name(NULL, "mac-io")) != NULL) { max_irqs = max_real_irqs = 64; - level_mask[0] = HEATHROW_LEVEL_MASK; - level_mask[1] = 0; /* We might have a second cascaded heathrow */ slave = of_find_node_by_name(master, "mac-io"); @@ -363,11 +344,8 @@ static void __init pmac_pic_probe_oldstyle(void) } /* We found a slave */ - if (slave) { + if (slave) max_irqs = 128; - level_mask[2] = HEATHROW_LEVEL_MASK; - level_mask[3] = 0; - } } BUG_ON(master == NULL); |