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              8
  20 #define IRQS_PER_MSI_REG        32
  21 #define NR_MSI_IRQS     (NR_MSI_REG * IRQS_PER_MSI_REG)
  22
  23 #define FSL_PIC_IP_MASK   0x0000000F
  24 #define FSL_PIC_IP_MPIC   0x00000001
  25 #define FSL_PIC_IP_IPIC   0x00000002
  26 #define FSL_PIC_IP_VMPIC  0x00000003
  27
  28 struct fsl_msi {
  29         struct irq_domain *irqhost;
  30
  31         unsigned long cascade_irq;
  32
  33         u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
  34         void __iomem *msi_regs;
  35         u32 feature;
  36         int msi_virqs[NR_MSI_REG];
  37
  38         struct msi_bitmap bitmap;
  39
  40         struct list_head list;          /* support multiple MSI banks */
  41
  42         phandle phandle;
  43 };
  44
  45 #endif /* _POWERPC_SYSDEV_FSL_MSI_H */
  46