[IA64] Implement some PAL procedures

This patch implements:
 - PAL_PREFETCH_VISIBILITY
 - PAL_MC_DRAIN
 - PAL_BRAND_INFO
 - PAL_GET_PSTATE
 - PAL_CACHE_SHARED_INFO

These PAL procedures are necessary for Windows 2008.

Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>

diff --git a/xen/arch/ia64/xen/fw_emul.c b/xen/arch/ia64/xen/fw_emul.c
index b6e9f8754bf0170a842f00d62a9538eb39dba970..5ef3ab9f4fa78806b02a6dfaccda5db591cf2c92 100644 (file)
--- a/xen/arch/ia64/xen/fw_emul.c
+++ b/xen/arch/ia64/xen/fw_emul.c
@@ -589,6 +589,19 @@ remote_pal_cache_flush(void *v)
                args->status = status;
 }
 
+static void
+remote_pal_prefetch_visibility(void *v)
+{
+       s64 trans_type = (s64)v;
+       ia64_pal_prefetch_visibility(trans_type);
+}
+
+static void
+remote_pal_mc_drain(void *v)
+{
+       ia64_pal_mc_drain();
+}
+
 struct ia64_pal_retval
 xen_pal_emulator(unsigned long index, u64 in1, u64 in2, u64 in3)
 {
@@ -850,7 +863,35 @@ xen_pal_emulator(unsigned long index, u64 in1, u64 in2, u64 in3)
                status = PAL_STATUS_SUCCESS;
                r9 = current->vcpu_id;
                break;
+           case PAL_PREFETCH_VISIBILITY:
+               status = ia64_pal_prefetch_visibility(in1);
+               if (status == 0) {
+                       /* must be performed on all remote processors 
+                          in the coherence domain. */
+                       smp_call_function(remote_pal_prefetch_visibility,
+                                         (void *)in1, 1, 1);
+                       status = 1; /* no more necessary on remote processor */
+               }
+               break;
+           case PAL_MC_DRAIN:
+               status = ia64_pal_mc_drain();
+               /* FIXME: All vcpus likely call PAL_MC_DRAIN.
+                  That causes the congestion. */
+               smp_call_function(remote_pal_mc_drain, NULL, 1, 1);
+               break;
+           case PAL_BRAND_INFO:
+               if (in1 == 0) {
+                       char brand_info[128];
+                       status = ia64_pal_get_brand_info(brand_info);
+                       if (status == PAL_STATUS_SUCCESS)
+                               copy_to_user((void *)in2, brand_info, 128);
+               } else {
+                       status = PAL_STATUS_EINVAL;
+               }
+               break;
            case PAL_LOGICAL_TO_PHYSICAL:
+           case PAL_GET_PSTATE:
+           case PAL_CACHE_SHARED_INFO:
                /* Optional, no need to complain about being unimplemented */
                break;
            default: