[SPARC64]: Generic sun4v_build_irq().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 51f65054bf18..bcc889a53324 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -303,6 +303,38 @@ out:
         return __irq(bucket);
 }
 
+unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags)
+{
+        struct ino_bucket *bucket;
+        unsigned long sysino;
+
+        sysino = sun4v_devino_to_sysino(devhandle, devino);
+
+        printk(KERN_INFO "sun4v_irq: Mapping ( devh[%08x] devino[%08x] ) "
+               "--> sysino[%016lx]\n", devhandle, devino, sysino);
+
+        bucket = &ivector_table[sysino];
+
+        /* Catch accidental accesses to these things.  IMAP/ICLR handling
+         * is done by hypervisor calls on sun4v platforms, not by direct
+         * register accesses.
+         */
+        bucket->imap = ~0UL;
+        bucket->iclr = ~0UL;
+
+        bucket->pil = pil;
+        bucket->flags = flags;
+
+        bucket->irq_info = kmalloc(sizeof(struct irq_desc), GFP_ATOMIC);
+        if (!bucket->irq_info) {
+                prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
+                prom_halt();
+        }
+        memset(bucket->irq_info, 0, sizeof(struct irq_desc));
+
+        return __irq(bucket);
+}
+
 static void atomic_bucket_insert(struct ino_bucket *bucket)
 {
         unsigned long pstate;