include/soc/tegra/mc.h

   1 /*
   2  * Copyright (C) 2014 NVIDIA Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef __SOC_TEGRA_MC_H__
  10 #define __SOC_TEGRA_MC_H__
  11
  12 #include <linux/types.h>
  13
  14 struct clk;
  15 struct device;
  16 struct page;
  17
  18 struct tegra_smmu_enable {
  19         unsigned int reg;
  20         unsigned int bit;
  21 };
  22
  23 /* latency allowance */
  24 struct tegra_mc_la {
  25         unsigned int reg;
  26         unsigned int shift;
  27         unsigned int mask;
  28         unsigned int def;
  29 };
  30
  31 struct tegra_mc_client {
  32         unsigned int id;
  33         const char *name;
  34         unsigned int swgroup;
  35
  36         unsigned int fifo_size;
  37
  38         struct tegra_smmu_enable smmu;
  39         struct tegra_mc_la la;
  40 };
  41
  42 struct tegra_smmu_swgroup {
  43         unsigned int swgroup;
  44         unsigned int reg;
  45 };
  46
  47 struct tegra_smmu_ops {
  48         void (*flush_dcache)(struct page *page, unsigned long offset,
  49                              size_t size);
  50 };
  51
  52 struct tegra_smmu_soc {
  53         const struct tegra_mc_client *clients;
  54         unsigned int num_clients;
  55
  56         const struct tegra_smmu_swgroup *swgroups;
  57         unsigned int num_swgroups;
  58
  59         bool supports_round_robin_arbitration;
  60         bool supports_request_limit;
  61
  62         unsigned int num_asids;
  63
  64         const struct tegra_smmu_ops *ops;
  65 };
  66
  67 struct tegra_mc;
  68 struct tegra_smmu;
  69
  70 #ifdef CONFIG_TEGRA_IOMMU_SMMU
  71 struct tegra_smmu *tegra_smmu_probe(struct device *dev,
  72                                     const struct tegra_smmu_soc *soc,
  73                                     struct tegra_mc *mc);
  74 #else
  75 static inline struct tegra_smmu *
  76 tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc,
  77                  struct tegra_mc *mc)
  78 {
  79         return NULL;
  80 }
  81 #endif
  82
  83 struct tegra_mc_soc {
  84         const struct tegra_mc_client *clients;
  85         unsigned int num_clients;
  86
  87         const unsigned int *emem_regs;
  88         unsigned int num_emem_regs;
  89
  90         unsigned int num_address_bits;
  91         unsigned int atom_size;
  92
  93         const struct tegra_smmu_soc *smmu;
  94 };
  95
  96 struct tegra_mc {
  97         struct device *dev;
  98         struct tegra_smmu *smmu;
  99         void __iomem *regs;
 100         struct clk *clk;
 101         int irq;
 102
 103         const struct tegra_mc_soc *soc;
 104         unsigned long tick;
 105 };
 106
 107 #endif /* __SOC_TEGRA_MC_H__ */