v4.19.13 snapshot.
diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h
new file mode 100644
index 0000000..a67359d
--- /dev/null
+++ b/arch/powerpc/sysdev/fsl_msi.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Tony Li <tony.li@freescale.com>
+ * Jason Jin <Jason.jin@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ */
+#ifndef _POWERPC_SYSDEV_FSL_MSI_H
+#define _POWERPC_SYSDEV_FSL_MSI_H
+
+#include <linux/of.h>
+#include <asm/msi_bitmap.h>
+
+#define NR_MSI_REG_MSIIR 8 /* MSIIR can index 8 MSI registers */
+#define NR_MSI_REG_MSIIR1 16 /* MSIIR1 can index 16 MSI registers */
+#define NR_MSI_REG_MAX NR_MSI_REG_MSIIR1
+#define IRQS_PER_MSI_REG 32
+#define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG)
+
+#define FSL_PIC_IP_MASK 0x0000000F
+#define FSL_PIC_IP_MPIC 0x00000001
+#define FSL_PIC_IP_IPIC 0x00000002
+#define FSL_PIC_IP_VMPIC 0x00000003
+
+#define MSI_HW_ERRATA_ENDIAN 0x00000010
+
+struct fsl_msi_cascade_data;
+
+struct fsl_msi {
+ struct irq_domain *irqhost;
+
+ unsigned long cascade_irq;
+
+ u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
+ u32 ibs_shift; /* Shift of interrupt bit select */
+ u32 srs_shift; /* Shift of the shared interrupt register select */
+ void __iomem *msi_regs;
+ u32 feature;
+ struct fsl_msi_cascade_data *cascade_array[NR_MSI_REG_MAX];
+
+ struct msi_bitmap bitmap;
+
+ struct list_head list; /* support multiple MSI banks */
+
+ phandle phandle;
+};
+
+#endif /* _POWERPC_SYSDEV_FSL_MSI_H */
+