include/linux/platform_data/iommu-omap.h

   1 /*
   2  * omap iommu: main structures
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/platform_device.h>
  14
  15 #define MMU_REG_SIZE            256
  16
  17 /**
  18  * struct iommu_arch_data - omap iommu private data
  19  * @name: name of the iommu device
  20  * @iommu_dev: handle of the iommu device
  21  *
  22  * This is an omap iommu private data object, which binds an iommu user
  23  * to its iommu device. This object should be placed at the iommu user's
  24  * dev_archdata so generic IOMMU API can be used without having to
  25  * utilize omap-specific plumbing anymore.
  26  */
  27 struct omap_iommu_arch_data {
  28         const char *name;
  29         struct omap_iommu *iommu_dev;
  30 };
  31
  32 /**
  33  * struct omap_mmu_dev_attr - OMAP mmu device attributes for omap_hwmod
  34  * @da_start:           device address where the va space starts.
  35  * @da_end:             device address where the va space ends.
  36  * @nr_tlb_entries:     number of entries supported by the translation
  37  *                      look-aside buffer (TLB).
  38  */
  39 struct omap_mmu_dev_attr {
  40         u32 da_start;
  41         u32 da_end;
  42         int nr_tlb_entries;
  43 };
  44
  45 struct iommu_platform_data {
  46         const char *name;
  47         const char *reset_name;
  48         int nr_tlb_entries;
  49         u32 da_start;
  50         u32 da_end;
  51
  52         int (*assert_reset)(struct platform_device *pdev, const char *name);
  53         int (*deassert_reset)(struct platform_device *pdev, const char *name);
  54 };