aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel
diff options
context:
space:
mode:
authorGrant Likely <grant.likely@secretlab.ca>2011-05-04 15:02:15 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-05-04 15:02:15 +1000
commit476eb4912601a8c01e6702b9a029f476b4b131d2 (patch)
tree2ed0b8c166c7cb46174318fe187f5edc062829be /arch/powerpc/kernel
parent65f47f1339dfcffcd5837a307172fb41aa39e479 (diff)
downloadlinaro-lsk-476eb4912601a8c01e6702b9a029f476b4b131d2.tar.gz
powerpc/irq: Stop exporting irq_map
First step in eliminating irq_map[] table entirely Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/irq.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 4f5d6e751a6..a81dd74414b 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -481,20 +481,42 @@ void do_softirq(void)
* IRQ controller and virtual interrupts
*/
+/* The main irq map itself is an array of NR_IRQ entries containing the
+ * associate host and irq number. An entry with a host of NULL is free.
+ * An entry can be allocated if it's free, the allocator always then sets
+ * hwirq first to the host's invalid irq number and then fills ops.
+ */
+struct irq_map_entry {
+ irq_hw_number_t hwirq;
+ struct irq_host *host;
+};
+
static LIST_HEAD(irq_hosts);
static DEFINE_RAW_SPINLOCK(irq_big_lock);
static unsigned int revmap_trees_allocated;
static DEFINE_MUTEX(revmap_trees_mutex);
-struct irq_map_entry irq_map[NR_IRQS];
+static struct irq_map_entry irq_map[NR_IRQS];
static unsigned int irq_virq_count = NR_IRQS;
static struct irq_host *irq_default_host;
+irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
+{
+ return irq_map[d->irq].hwirq;
+}
+EXPORT_SYMBOL_GPL(irqd_to_hwirq);
+
irq_hw_number_t virq_to_hw(unsigned int virq)
{
return irq_map[virq].hwirq;
}
EXPORT_SYMBOL_GPL(virq_to_hw);
+struct irq_host *virq_to_host(unsigned int virq)
+{
+ return irq_map[virq].host;
+}
+EXPORT_SYMBOL_GPL(virq_to_host);
+
static int default_irq_host_match(struct irq_host *h, struct device_node *np)
{
return h->of_node != NULL && h->of_node == np;
@@ -1103,7 +1125,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
struct irq_chip *chip;
seq_printf(m, "%5d ", i);
- seq_printf(m, "0x%05lx ", virq_to_hw(i));
+ seq_printf(m, "0x%05lx ", irq_map[i].hwirq);
chip = irq_desc_get_chip(desc);
if (chip && chip->name)