1 files changed, 63 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 0438f819fe6..e736387fee6 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -27,8 +27,9 @@
 #include <asm/rtas.h>
 #include <asm/prom.h>
 #include <asm/nvram.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/machdep.h>
+#include <asm/topology.h>
 
 
 static DEFINE_SPINLOCK(rtasd_log_lock);
@@ -87,6 +88,8 @@ static char *rtas_event_type(int type)
 			return "Resource Deallocation Event";
 		case RTAS_TYPE_DUMP:
 			return "Dump Notification Event";
+		case RTAS_TYPE_PRRN:
+			return "Platform Resource Reassignment Event";
 	}
 
 	return rtas_type[0];
@@ -147,8 +150,8 @@ static void printk_log_rtas(char *buf, int len)
 		struct rtas_error_log *errlog = (struct rtas_error_log *)buf;
 
 		printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n",
-		       error_log_cnt, rtas_event_type(errlog->type),
-		       errlog->severity);
+		       error_log_cnt, rtas_event_type(rtas_error_type(errlog)),
+		       rtas_error_severity(errlog));
 	}
 }
 
@@ -156,14 +159,16 @@ static int log_rtas_len(char * buf)
 {
 	int len;
 	struct rtas_error_log *err;
+	uint32_t extended_log_length;
 
 	/* rtas fixed header */
 	len = 8;
 	err = (struct rtas_error_log *)buf;
-	if (err->extended_log_length) {
+	extended_log_length = rtas_error_extended_log_length(err);
+	if (rtas_error_extended(err) && extended_log_length) {
 
 		/* extended header */
-		len += err->extended_log_length;
+		len += extended_log_length;
 	}
 
 	if (rtas_error_log_max == 0)
@@ -265,9 +270,49 @@ void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
 		spin_unlock_irqrestore(&rtasd_log_lock, s);
 		return;
 	}
+}
+
+#ifdef CONFIG_PPC_PSERIES
+static s32 prrn_update_scope;
+
+static void prrn_work_fn(struct work_struct *work)
+{
+	/*
+	 * For PRRN, we must pass the negative of the scope value in
+	 * the RTAS event.
+	 */
+	pseries_devicetree_update(-prrn_update_scope);
+}
+
+static DECLARE_WORK(prrn_work, prrn_work_fn);
+
+void prrn_schedule_update(u32 scope)
+{
+	flush_work(&prrn_work);
+	prrn_update_scope = scope;
+	schedule_work(&prrn_work);
+}
+
+static void handle_rtas_event(const struct rtas_error_log *log)
+{
+	if (rtas_error_type(log) != RTAS_TYPE_PRRN || !prrn_is_enabled())
+		return;
+
+	/* For PRRN Events the extended log length is used to denote
+	 * the scope for calling rtas update-nodes.
+	 */
+	prrn_schedule_update(rtas_error_extended_log_length(log));
+}
+
+#else
 
+static void handle_rtas_event(const struct rtas_error_log *log)
+{
+	return;
 }
 
+#endif
+
 static int rtas_log_open(struct inode * inode, struct file * file)
 {
 	return 0;
@@ -388,8 +433,10 @@ static void do_event_scan(void)
 			break;
 		}
 
-		if (error == 0)
+		if (error == 0) {
 			pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0);
+			handle_rtas_event((struct rtas_error_log *)logdata);
+		}
 
 	} while(error == 0);
 }
@@ -412,7 +459,8 @@ static void rtas_event_scan(struct work_struct *w)
 
 	get_online_cpus();
 
-	cpu = cpumask_next(smp_processor_id(), cpu_online_mask);
+	/* raw_ OK because just using CPU as starting point. */
+	cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
         if (cpu >= nr_cpu_ids) {
 		cpu = cpumask_first(cpu_online_mask);
 
@@ -464,13 +512,20 @@ static void start_event_scan(void)
 	pr_debug("rtasd: will sleep for %d milliseconds\n",
 		 (30000 / rtas_event_scan_rate));
 
-	/* Retreive errors from nvram if any */
+	/* Retrieve errors from nvram if any */
 	retreive_nvram_error_log();
 
 	schedule_delayed_work_on(cpumask_first(cpu_online_mask),
 				 &event_scan_work, event_scan_delay);
 }
 
+/* Cancel the rtas event scan work */
+void rtas_cancel_event_scan(void)
+{
+	cancel_delayed_work_sync(&event_scan_work);
+}
+EXPORT_SYMBOL_GPL(rtas_cancel_event_scan);
+
 static int __init rtas_init(void)
 {
 	struct proc_dir_entry *entry;