[SPARC64]: Probe virtual-devices root node on sun4v.
This is where we learn how to get the interrupts
for things like the hypervisor console device.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index ac11d87..8171328 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -12,6 +12,7 @@
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
+#include <linux/bootmem.h>
#include <asm/page.h>
#include <asm/oplib.h>
@@ -20,6 +21,7 @@
#include <asm/spitfire.h>
#include <asm/timer.h>
#include <asm/cpudata.h>
+#include <asm/vdev.h>
/* Used to synchronize acceses to NatSemi SUPER I/O chip configure
* operations in asm/ns87303.h
@@ -29,6 +31,61 @@
extern void cpu_probe(void);
extern void central_probe(void);
+u32 sun4v_vdev_devhandle;
+int sun4v_vdev_root;
+struct linux_prom_pci_intmap *sun4v_vdev_intmap;
+int sun4v_vdev_num_intmap;
+struct linux_prom_pci_intmap sun4v_vdev_intmask;
+
+static void __init sun4v_virtual_device_probe(void)
+{
+ struct linux_prom64_registers regs;
+ struct linux_prom_pci_intmap *ip;
+ int node, sz, err;
+
+ if (tlb_type != hypervisor)
+ return;
+
+ node = prom_getchild(prom_root_node);
+ node = prom_searchsiblings(node, "virtual-devices");
+ if (!node) {
+ prom_printf("SUN4V: Fatal error, no virtual-devices node.\n");
+ prom_halt();
+ }
+
+ sun4v_vdev_root = node;
+
+ prom_getproperty(node, "reg", (char *)®s, sizeof(regs));
+ sun4v_vdev_devhandle = (regs.phys_addr >> 32UL) & 0x0fffffff;
+
+ sz = sizeof(*ip) * 64;
+ sun4v_vdev_intmap = ip = alloc_bootmem_low_pages(sz);
+ if (!sun4v_vdev_intmap) {
+ prom_printf("SUN4V: Error, cannot allocate vdev intmap.\n");
+ prom_halt();
+ }
+
+ err = prom_getproperty(node, "interrupt-map", (char *) ip, sz);
+ if (err == -1) {
+ prom_printf("SUN4V: Fatal error, no vdev interrupt-map.\n");
+ prom_halt();
+ }
+
+ sun4v_vdev_num_intmap = err / sizeof(*ip);
+
+ err = prom_getproperty(node, "interrupt-map-mask",
+ (char *) &sun4v_vdev_intmask,
+ sizeof(sun4v_vdev_intmask));
+ if (err == -1) {
+ prom_printf("SUN4V: Fatal error, no vdev "
+ "interrupt-map-mask.\n");
+ prom_halt();
+ }
+
+ printk("SUN4V: virtual-devices devhandle[%x]\n",
+ sun4v_vdev_devhandle);
+}
+
static const char *cpu_mid_prop(void)
{
if (tlb_type == spitfire)
@@ -177,6 +234,7 @@
}
#endif
+ sun4v_virtual_device_probe();
central_probe();
cpu_probe();
diff --git a/include/asm-sparc64/vdev.h b/include/asm-sparc64/vdev.h
new file mode 100644
index 0000000..ebaac41
--- /dev/null
+++ b/include/asm-sparc64/vdev.h
@@ -0,0 +1,18 @@
+/* vdev.h: SUN4V virtual device interfaces and defines.
+ *
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#ifndef _SPARC64_VDEV_H
+#define _SPARC64_VDEV_H
+
+#include <linux/types.h>
+#include <asm/oplib.h>
+
+extern u32 sun4v_vdev_devhandle;
+extern int sun4v_vdev_root;
+extern struct linux_prom_pci_intmap *sun4v_vdev_intmap;
+extern int sun4v_vdev_num_intmap;
+extern struct linux_prom_pci_intmap sun4v_vdev_intmask;
+
+#endif /* !(_SPARC64_VDEV_H) */