X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Fsal.c;h=0464173ea56846e31a8f3424ab03ae18fa6faca8;hb=3df302ff56fac91d54e964faed9d293018ac71ca;hp=f44fe8412162c55b73b80663d8bb3e8d4d3d50a9;hpb=f315ccb3e679f271583f2a4f463ad9b65665b751;p=linux-2.6-omap-h63xx.git

diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index f44fe841216..0464173ea56 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -109,6 +109,13 @@ check_versions (struct ia64_sal_systab *systab)
 		sal_revision = SAL_VERSION_CODE(2, 8);
 		sal_version = SAL_VERSION_CODE(0, 0);
 	}
+
+	if (ia64_platform_is("sn2") && (sal_revision == SAL_VERSION_CODE(2, 9)))
+		/*
+		 * SGI Altix has hard-coded version 2.9 in their prom
+		 * but they actually implement 3.2, so let's fix it here.
+		 */
+		sal_revision = SAL_VERSION_CODE(3, 2);
 }
 
 static void __init
@@ -222,6 +229,14 @@ static void __init sal_desc_ap_wakeup(void *p) { }
  */
 static int sal_cache_flush_drops_interrupts;
 
+static int __init
+force_pal_cache_flush(char *str)
+{
+	sal_cache_flush_drops_interrupts = 1;
+	return 0;
+}
+early_param("force_pal_cache_flush", force_pal_cache_flush);
+
 void __init
 check_sal_cache_flush (void)
 {
@@ -230,15 +245,17 @@ check_sal_cache_flush (void)
 	u64 vector, cache_type = 3;
 	struct ia64_sal_retval isrv;
 
+	if (sal_cache_flush_drops_interrupts)
+		return;
+
 	cpu = get_cpu();
 	local_irq_save(flags);
 
 	/*
-	 * Schedule a timer interrupt, wait until it's reported, and see if
-	 * SAL_CACHE_FLUSH drops it.
+	 * Send ourselves a timer interrupt, wait until it's reported, and see
+	 * if SAL_CACHE_FLUSH drops it.
 	 */
-	ia64_set_itv(IA64_TIMER_VECTOR);
-	ia64_set_itm(ia64_get_itc() + 1000);
+	platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
 
 	while (!ia64_get_irr(IA64_TIMER_VECTOR))
 		cpu_relax();