[POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c

The code in xics.c to setup the i8259 cascaded irq handler is not really
xics specific, so move it into setup.c - we will clean this up further in
a subsequent patch.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 48 deletions

diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index a977f200db8..c3f05d4aff4 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -655,52 +655,6 @@ static void __init xics_init_one_node(struct device_node *np,
 	}
 }
 
-
-static void __init xics_setup_8259_cascade(void)
-{
-	struct device_node *np, *old, *found = NULL;
-	int cascade, naddr;
-	const u32 *addrp;
-	unsigned long intack = 0;
-
-	for_each_node_by_type(np, "interrupt-controller")
-		if (of_device_is_compatible(np, "chrp,iic")) {
-			found = np;
-			break;
-		}
-	if (found == NULL) {
-		printk(KERN_DEBUG "xics: no ISA interrupt controller\n");
-		return;
-	}
-	cascade = irq_of_parse_and_map(found, 0);
-	if (cascade == NO_IRQ) {
-		printk(KERN_ERR "xics: failed to map cascade interrupt");
-		return;
-	}
-	pr_debug("xics: cascade mapped to irq %d\n", cascade);
-
-	for (old = of_node_get(found); old != NULL ; old = np) {
-		np = of_get_parent(old);
-		of_node_put(old);
-		if (np == NULL)
-			break;
-		if (strcmp(np->name, "pci") != 0)
-			continue;
-		addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);
-		if (addrp == NULL)
-			continue;
-		naddr = of_n_addr_cells(np);
-		intack = addrp[naddr-1];
-		if (naddr > 1)
-			intack |= ((unsigned long)addrp[naddr-2]) << 32;
-	}
-	if (intack)
-		printk(KERN_DEBUG "xics: PCI 8259 intack at 0x%016lx\n", intack);
-	i8259_init(found, intack);
-	of_node_put(found);
-	set_irq_chained_handler(cascade, pseries_8259_cascade);
-}
-
 void __init xics_init_IRQ(void)
 {
 	struct device_node *np;
@@ -733,8 +687,6 @@ void __init xics_init_IRQ(void)
 
 	xics_setup_cpu();
 
-	xics_setup_8259_cascade();
-
 	ppc64_boot_msg(0x21, "XICS Done");
 }