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 struct tegra_mc_timing { 24 unsigned long rate; 25 26 u32 *emem_data; 27 }; 28 29 /* latency allowance */ 30 struct tegra_mc_la { 31 unsigned int reg; 32 unsigned int shift; 33 unsigned int mask; 34 unsigned int def; 35 }; 36 37 struct tegra_mc_client { 38 unsigned int id; 39 const char *name; 40 unsigned int swgroup; 41 42 unsigned int fifo_size; 43 44 struct tegra_smmu_enable smmu; 45 struct tegra_mc_la la; 46 }; 47 48 struct tegra_smmu_swgroup { 49 const char *name; 50 unsigned int swgroup; 51 unsigned int reg; 52 }; 53 54 struct tegra_smmu_ops { 55 void (*flush_dcache)(struct page *page, unsigned long offset, 56 size_t size); 57 }; 58 59 struct tegra_smmu_soc { 60 const struct tegra_mc_client *clients; 61 unsigned int num_clients; 62 63 const struct tegra_smmu_swgroup *swgroups; 64 unsigned int num_swgroups; 65 66 bool supports_round_robin_arbitration; 67 bool supports_request_limit; 68 69 unsigned int num_asids; 70 71 const struct tegra_smmu_ops *ops; 72 }; 73 74 struct tegra_mc; 75 struct tegra_smmu; 76 77 #ifdef CONFIG_TEGRA_IOMMU_SMMU 78 struct tegra_smmu *tegra_smmu_probe(struct device *dev, 79 const struct tegra_smmu_soc *soc, 80 struct tegra_mc *mc); 81 void tegra_smmu_remove(struct tegra_smmu *smmu); 82 #else 83 static inline struct tegra_smmu * 84 tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc, 85 struct tegra_mc *mc) 86 { 87 return NULL; 88 } 89 90 static inline void tegra_smmu_remove(struct tegra_smmu *smmu) 91 { 92 } 93 #endif 94 95 struct tegra_mc_soc { 96 const struct tegra_mc_client *clients; 97 unsigned int num_clients; 98 99 const unsigned long *emem_regs; 100 unsigned int num_emem_regs; 101 102 unsigned int num_address_bits; 103 unsigned int atom_size; 104 105 const struct tegra_smmu_soc *smmu; 106 }; 107 108 struct tegra_mc { 109 struct device *dev; 110 struct tegra_smmu *smmu; 111 void __iomem *regs; 112 struct clk *clk; 113 int irq; 114 115 const struct tegra_mc_soc *soc; 116 unsigned long tick; 117 118 struct tegra_mc_timing *timings; 119 unsigned int num_timings; 120 }; 121 122 void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate); 123 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc); 124 125 #endif /* __SOC_TEGRA_MC_H__ */ 126