We have OPAL_MSG_PRD message type to pass prd related messages from OPAL
to `opal-prd`. It can handle messages upto 64 bytes. We have a requirement
to send bigger than 64 bytes of data from OPAL to `opal-prd`. Lets add new
message type (OPAL_MSG_PRD2) to pass bigger data.
Cc: Jeremy Kerr <j...@ozlabs.org>
Signed-off-by: Vasant Hegde <hegdevas...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/opal-api.h | 1 +
arch/powerpc/platforms/powernv/opal-prd.c | 9 ++++++++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/opal-api.h
b/arch/powerpc/include/asm/opal-api.h
index 09a8553833d1..428b5ef7db7b 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -453,6 +453,7 @@ enum opal_msg_type {
OPAL_MSG_DPO = 5,
OPAL_MSG_PRD = 6,
OPAL_MSG_OCC = 7,
+ OPAL_MSG_PRD2 = 8,
OPAL_MSG_TYPE_MAX,
};
diff --git a/arch/powerpc/platforms/powernv/opal-prd.c
b/arch/powerpc/platforms/powernv/opal-prd.c
index e072bf157d62..50a735d77192 100644
--- a/arch/powerpc/platforms/powernv/opal-prd.c
+++ b/arch/powerpc/platforms/powernv/opal-prd.c
@@ -342,7 +342,7 @@ static int opal_prd_msg_notifier(struct notifier_block *nb,
int msg_size, item_size;
unsigned long flags;
- if (msg_type != OPAL_MSG_PRD)
+ if (msg_type != OPAL_MSG_PRD && msg_type != OPAL_MSG_PRD2)
return 0;
/* Calculate total size of the message and item we need to store. The
@@ -393,6 +393,13 @@ static int opal_prd_probe(struct platform_device *pdev)
return rc;
}
+ rc = opal_message_notifier_register(OPAL_MSG_PRD2, &opal_prd_event_nb);
+ if (rc) {
+ pr_err("%s: Couldn't register event notifier (%d)\n",
+ __func__, OPAL_MSG_PRD2);
+ return rc;
+ }
+
rc = misc_register(&opal_prd_dev);
if (rc) {
pr_err("failed to register miscdev\n");
--
2.14.3
