[SPARC64]: Negotiate hypervisor API for PCI services.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 62e4d047dbc0..6b3fe2c1d65e 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -27,6 +27,9 @@
 
 #include "pci_sun4v.h"
 
+static unsigned long vpci_major = 1;
+static unsigned long vpci_minor = 1;
+
 #define PGLIST_NENTS    (PAGE_SIZE / sizeof(u64))
 
 struct iommu_batch {
@@ -1162,6 +1165,7 @@ static void pci_sun4v_pbm_init(struct pci_controller_info *p, struct device_node
 
 void sun4v_pci_init(struct device_node *dp, char *model_name)
 {
+        static int hvapi_negotiated = 0;
         struct pci_controller_info *p;
         struct pci_pbm_info *pbm;
         struct iommu *iommu;
@@ -1170,6 +1174,20 @@ void sun4v_pci_init(struct device_node *dp, char *model_name)
         u32 devhandle;
         int i;
 
+        if (!hvapi_negotiated++) {
+                int err = sun4v_hvapi_register(HV_GRP_PCI,
+                                               vpci_major,
+                                               &vpci_minor);
+
+                if (err) {
+                        prom_printf("SUN4V_PCI: Could not register hvapi, "
+                                    "err=%d\n", err);
+                        prom_halt();
+                }
+                printk("SUN4V_PCI: Registered hvapi major[%lu] minor[%lu]\n",
+                       vpci_major, vpci_minor);
+        }
+
         prop = of_find_property(dp, "reg", NULL);
         regs = prop->value;