linux-kernel - [PATCH v5 5/5] firmware: zynqmp: Add support to handle IPI CRC failure

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Date:   Wed, 29 Nov 2023 03:27:13 -0800
From:   Jay Buddhabhatti <jay.buddhabhatti@....com>
To:     <michal.simek@....com>, <gregkh@...uxfoundation.org>,
        <nava.kishore.manne@....com>, <sai.krishna.potthuri@....com>,
        <robh@...nel.org>, <marex@...x.de>, <arnd@...db.de>,
        <izhar.ameer.shaikh@....com>, <ruanjinjie@...wei.com>,
        <linus.walleij@...aro.org>, <shubhrajyoti.datta@....com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Jay Buddhabhatti <jay.buddhabhatti@....com>,
        Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>
Subject: [PATCH v5 5/5] firmware: zynqmp: Add support to handle IPI CRC failure

Added new PM error code XST_PM_INVALID_CRC to handle CRC validation failure
during IPI communication.

Co-developed-by: Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>
Signed-off-by: Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>
Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@....com>
---
 drivers/firmware/xilinx/zynqmp.c     | 1 +
 include/linux/firmware/xlnx-zynqmp.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 84fdec772a46..00f87c81b293 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -103,6 +103,7 @@ static int zynqmp_pm_ret_code(u32 ret_status)
 	case XST_PM_INTERNAL:
 	case XST_PM_CONFLICT:
 	case XST_PM_INVALID_NODE:
+	case XST_PM_INVALID_CRC:
 	default:
 		return -EINVAL;
 	}
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index c28b1d69e6a3..7e6cb8cdcd10 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -174,6 +174,7 @@ enum pm_ret_status {
 	XST_PM_SUCCESS = 0,
 	XST_PM_INVALID_VERSION = 4,
 	XST_PM_NO_FEATURE = 19,
+	XST_PM_INVALID_CRC = 301,
 	XST_PM_INTERNAL = 2000,
 	XST_PM_CONFLICT = 2001,
 	XST_PM_NO_ACCESS = 2002,
-- 
2.17.1