arch/powerpc/sysdev/fsl_msi.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved.
   4  *
   5  * Author: Tony Li <tony.li@freescale.com>
   6  *         Jason Jin <Jason.jin@freescale.com>
   7  */
   8 #ifndef _POWERPC_SYSDEV_FSL_MSI_H
   9 #define _POWERPC_SYSDEV_FSL_MSI_H
  10
  11 #include <linux/of.h>
  12 #include <asm/msi_bitmap.h>
  13
  14 #define NR_MSI_REG_MSIIR        8  /* MSIIR can index 8 MSI registers */
  15 #define NR_MSI_REG_MSIIR1       16 /* MSIIR1 can index 16 MSI registers */
  16 #define NR_MSI_REG_MAX          NR_MSI_REG_MSIIR1
  17 #define IRQS_PER_MSI_REG        32
  18 #define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG)
  19
  20 #define FSL_PIC_IP_MASK   0x0000000F
  21 #define FSL_PIC_IP_MPIC   0x00000001
  22 #define FSL_PIC_IP_IPIC   0x00000002
  23 #define FSL_PIC_IP_VMPIC  0x00000003
  24
  25 #define MSI_HW_ERRATA_ENDIAN 0x00000010
  26
  27 struct fsl_msi_cascade_data;
  28
  29 struct fsl_msi {
  30         struct irq_domain *irqhost;
  31
  32         unsigned long cascade_irq;
  33
  34         u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
  35         u32 ibs_shift; /* Shift of interrupt bit select */
  36         u32 srs_shift; /* Shift of the shared interrupt register select */
  37         void __iomem *msi_regs;
  38         u32 feature;
  39         struct fsl_msi_cascade_data *cascade_array[NR_MSI_REG_MAX];
  40
  41         struct msi_bitmap bitmap;
  42
  43         struct list_head list;          /* support multiple MSI banks */
  44
  45         phandle phandle;
  46 };
  47
  48 #endif /* _POWERPC_SYSDEV_FSL_MSI_H */
  49