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TOMOYO Linux Cross Reference
Linux/arch/powerpc/sysdev/fsl_msi.h

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  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 #define MSI_HW_ERRATA_ENDIAN 0x00000010
 31 
 32 struct fsl_msi_cascade_data;
 33 
 34 struct fsl_msi {
 35         struct irq_domain *irqhost;
 36 
 37         unsigned long cascade_irq;
 38 
 39         u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
 40         u32 ibs_shift; /* Shift of interrupt bit select */
 41         u32 srs_shift; /* Shift of the shared interrupt register select */
 42         void __iomem *msi_regs;
 43         u32 feature;
 44         struct fsl_msi_cascade_data *cascade_array[NR_MSI_REG_MAX];
 45 
 46         struct msi_bitmap bitmap;
 47 
 48         struct list_head list;          /* support multiple MSI banks */
 49 
 50         phandle phandle;
 51 };
 52 
 53 #endif /* _POWERPC_SYSDEV_FSL_MSI_H */
 54 
 55 

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