arch/powerpc/sysdev/fsl_msi.h

   1 /*
   2  * Copyright (C) 2007-2008 Freescale Semiconductor, Inc. All rights reserved.
   3  *
   4  * Author: Tony Li <tony.li@freescale.com>
   5  *         Jason Jin <Jason.jin@freescale.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; version 2 of the
  10  * License.
  11  *
  12  */
  13 #ifndef _POWERPC_SYSDEV_FSL_MSI_H
  14 #define _POWERPC_SYSDEV_FSL_MSI_H
  15
  16 #include <linux/of.h>
  17 #include <asm/msi_bitmap.h>
  18
  19 #define NR_MSI_REG_MSIIR        8  /* MSIIR can index 8 MSI registers */
  20 #define NR_MSI_REG_MSIIR1       16 /* MSIIR1 can index 16 MSI registers */
  21 #define NR_MSI_REG_MAX          NR_MSI_REG_MSIIR1
  22 #define IRQS_PER_MSI_REG        32
  23 #define NR_MSI_IRQS_MAX (NR_MSI_REG_MAX * IRQS_PER_MSI_REG)
  24
  25 #define FSL_PIC_IP_MASK   0x0000000F
  26 #define FSL_PIC_IP_MPIC   0x00000001
  27 #define FSL_PIC_IP_IPIC   0x00000002
  28 #define FSL_PIC_IP_VMPIC  0x00000003
  29
  30 struct fsl_msi {
  31         struct irq_domain *irqhost;
  32
  33         unsigned long cascade_irq;
  34
  35         u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
  36         u32 ibs_shift; /* Shift of interrupt bit select */
  37         u32 srs_shift; /* Shift of the shared interrupt register select */
  38         void __iomem *msi_regs;
  39         u32 feature;
  40         int msi_virqs[NR_MSI_REG_MAX];
  41
  42         struct msi_bitmap bitmap;
  43
  44         struct list_head list;          /* support multiple MSI banks */
  45
  46         phandle phandle;
  47 };
  48
  49 #endif /* _POWERPC_SYSDEV_FSL_MSI_H */
  50