From 62521ea6db1045a746d4625f40ef6be8b74f126d Mon Sep 17 00:00:00 2001
From: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Date: Tue, 4 Aug 2015 16:48:56 +0530
Subject: [PATCH] powerpc/powernv: Invoke opal_cec_reboot2() on unrecoverable
HMI.
Invoke new opal_cec_reboot2() call with reboot type
OPAL_REBOOT_PLATFORM_ERROR (for unrecoverable HMI interrupts) to inform
BMC/OCC about this error, so that BMC can collect relevant data for error
analysis and decide what component to de-configure before rebooting.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/platforms/powernv/opal-hmi.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/opal-hmi.c b/arch/powerpc/platforms/powernv/opal-hmi.c
index acefdf9646f5..d000f4e21981 100644
--- a/arch/powerpc/platforms/powernv/opal-hmi.c
+++ b/arch/powerpc/platforms/powernv/opal-hmi.c
@@ -264,6 +264,8 @@ static void hmi_event_handler(struct work_struct *work)
spin_unlock_irqrestore(&opal_hmi_evt_lock, flags);
if (unrecoverable) {
+ int ret;
+
/* Pull all HMI events from OPAL before we panic. */
while (opal_get_msg(__pa(&msg), sizeof(msg)) == OPAL_SUCCESS) {
u32 type;
@@ -278,6 +280,23 @@ static void hmi_event_handler(struct work_struct *work)
hmi_evt = (struct OpalHMIEvent *)&msg.params[0];
print_hmi_event_info(hmi_evt);
}
+
+ /*
+ * Unrecoverable HMI exception. We need to inform BMC/OCC
+ * about this error so that it can collect relevant data
+ * for error analysis before rebooting.
+ */
+ ret = opal_cec_reboot2(OPAL_REBOOT_PLATFORM_ERROR,
+ "Unrecoverable HMI exception");
+ if (ret == OPAL_UNSUPPORTED) {
+ pr_emerg("Reboot type %d not supported\n",
+ OPAL_REBOOT_PLATFORM_ERROR);
+ }
+
+ /*
+ * Fall through and panic if opal_cec_reboot2() returns
+ * OPAL_UNSUPPORTED.
+ */
panic("Unrecoverable HMI exception");
}
}
--
2.34.1