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-rw-r--r--arch/powerpc/kernel/setup-common.c34
1 files changed, 31 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 3c8847b..3708037 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -478,11 +478,39 @@ void probe_machine(void)
printk(KERN_INFO "Using %s machine description\n", ppc_md.name);
}
+/* Match a class of boards, not a specific device configuration. */
int check_legacy_ioport(unsigned long base_port)
{
- if (ppc_md.check_legacy_ioport == NULL)
- return 0;
- return ppc_md.check_legacy_ioport(base_port);
+ struct device_node *parent, *np = NULL;
+ int ret = -ENODEV;
+
+ switch(base_port) {
+ case I8042_DATA_REG:
+ np = of_find_node_by_type(NULL, "8042");
+ break;
+ case FDC_BASE: /* FDC1 */
+ np = of_find_node_by_type(NULL, "fdc");
+ break;
+#ifdef CONFIG_PPC_PREP
+ case _PIDXR:
+ case _PNPWRP:
+ case PNPBIOS_BASE:
+ /* implement me */
+#endif
+ default:
+ /* ipmi is supposed to fail here */
+ break;
+ }
+ if (!np)
+ return ret;
+ parent = of_get_parent(np);
+ if (parent) {
+ if (strcmp(parent->type, "isa") == 0)
+ ret = 0;
+ of_node_put(parent);
+ }
+ of_node_put(np);
+ return ret;
}
EXPORT_SYMBOL(check_legacy_ioport);
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