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Diffstat (limited to 'arch/powerpc/kernel/rtasd.c')
-rw-r--r--arch/powerpc/kernel/rtasd.c49
1 files changed, 48 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 1045ff49cc6d..1130c53ad652 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -29,6 +29,7 @@
#include <asm/nvram.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];
@@ -265,9 +268,51 @@ 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 (log->type == RTAS_TYPE_PRRN) {
+ /* For PRRN Events the extended log length is used to denote
+ * the scope for calling rtas update-nodes.
+ */
+ if (prrn_is_enabled())
+ prrn_schedule_update(log->extended_log_length);
+ }
+
+ return;
+}
+
+#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);
}