[PATCH v2 2/2] powerpc/powernv: Add new opal message type
From: Vasant Hegde <hidden>
Date: 2019-06-05 11:49:38
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <jk@ozlabs.org> Signed-off-by: Vasant Hegde <redacted> --- 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