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Diffstat (limited to 'arch/sparc64/kernel/isa.c')
-rw-r--r--arch/sparc64/kernel/isa.c101
1 files changed, 6 insertions, 95 deletions
diff --git a/arch/sparc64/kernel/isa.c b/arch/sparc64/kernel/isa.c
index 24c0dc34be3..0f3aec72ef5 100644
--- a/arch/sparc64/kernel/isa.c
+++ b/arch/sparc64/kernel/isa.c
@@ -3,6 +3,8 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
#include <asm/isa.h>
struct sparc_isa_bridge *isa_chain;
@@ -46,107 +48,16 @@ isa_dev_get_resource(struct sparc_isa_device *isa_dev)
return pregs;
}
-/* I can't believe they didn't put a real INO in the isa device
- * interrupts property. The whole point of the OBP properties
- * is to shield the kernel from IRQ routing details.
- *
- * The P1275 standard for ISA devices seems to also have been
- * totally ignored.
- *
- * On later systems, an interrupt-map and interrupt-map-mask scheme
- * akin to EBUS is used.
- */
-static struct {
- int obp_irq;
- int pci_ino;
-} grover_irq_table[] = {
- { 1, 0x00 }, /* dma, unknown ino at this point */
- { 2, 0x27 }, /* floppy */
- { 3, 0x22 }, /* parallel */
- { 4, 0x2b }, /* serial */
- { 5, 0x25 }, /* acpi power management */
-
- { 0, 0x00 } /* end of table */
-};
-
-static int __init isa_dev_get_irq_using_imap(struct sparc_isa_device *isa_dev,
- struct sparc_isa_bridge *isa_br,
- int *interrupt,
- struct linux_prom_registers *reg)
-{
- struct linux_prom_ebus_intmap *imap;
- struct linux_prom_ebus_intmask *imask;
- unsigned int hi, lo, irq;
- int i, len, n_imap;
-
- imap = of_get_property(isa_br->prom_node, "interrupt-map", &len);
- if (!imap)
- return 0;
- n_imap = len / sizeof(imap[0]);
-
- imask = of_get_property(isa_br->prom_node, "interrupt-map-mask", NULL);
- if (!imask)
- return 0;
-
- hi = reg->which_io & imask->phys_hi;
- lo = reg->phys_addr & imask->phys_lo;
- irq = *interrupt & imask->interrupt;
- for (i = 0; i < n_imap; i++) {
- if ((imap[i].phys_hi == hi) &&
- (imap[i].phys_lo == lo) &&
- (imap[i].interrupt == irq)) {
- *interrupt = imap[i].cinterrupt;
- return 0;
- }
- }
- return -1;
-}
-
static void __init isa_dev_get_irq(struct sparc_isa_device *isa_dev,
struct linux_prom_registers *pregs)
{
- int irq_prop;
+ struct of_device *op = of_find_device_by_node(isa_dev->prom_node);
- irq_prop = of_getintprop_default(isa_dev->prom_node,
- "interrupts", -1);
- if (irq_prop <= 0) {
- goto no_irq;
+ if (!op || !op->num_irqs) {
+ isa_dev->irq = PCI_IRQ_NONE;
} else {
- struct pci_controller_info *pcic;
- struct pci_pbm_info *pbm;
- int i;
-
- if (of_find_property(isa_dev->bus->prom_node,
- "interrupt-map", NULL)) {
- if (!isa_dev_get_irq_using_imap(isa_dev,
- isa_dev->bus,
- &irq_prop,
- pregs))
- goto route_irq;
- }
-
- for (i = 0; grover_irq_table[i].obp_irq != 0; i++) {
- if (grover_irq_table[i].obp_irq == irq_prop) {
- int ino = grover_irq_table[i].pci_ino;
-
- if (ino == 0)
- goto no_irq;
-
- irq_prop = ino;
- goto route_irq;
- }
- }
- goto no_irq;
-
-route_irq:
- pbm = isa_dev->bus->parent;
- pcic = pbm->parent;
- isa_dev->irq = pcic->irq_build(pbm, NULL, irq_prop);
- return;
+ isa_dev->irq = op->irqs[0];
}
-
-no_irq:
- isa_dev->irq = PCI_IRQ_NONE;
}
static void __init isa_fill_children(struct sparc_isa_device *parent_isa_dev)