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_soc { 55 const struct tegra_mc_client *clients; 56 unsigned int num_clients; 57 58 const struct tegra_smmu_swgroup *swgroups; 59 unsigned int num_swgroups; 60 61 bool supports_round_robin_arbitration; 62 bool supports_request_limit; 63 64 unsigned int num_tlb_lines; 65 unsigned int num_asids; 66 }; 67 68 struct tegra_mc; 69 struct tegra_smmu; 70 71 #ifdef CONFIG_TEGRA_IOMMU_SMMU 72 struct tegra_smmu *tegra_smmu_probe(struct device *dev, 73 const struct tegra_smmu_soc *soc, 74 struct tegra_mc *mc); 75 void tegra_smmu_remove(struct tegra_smmu *smmu); 76 #else 77 static inline struct tegra_smmu * 78 tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc, 79 struct tegra_mc *mc) 80 { 81 return NULL; 82 } 83 84 static inline void tegra_smmu_remove(struct tegra_smmu *smmu) 85 { 86 } 87 #endif 88 89 struct tegra_mc_soc { 90 const struct tegra_mc_client *clients; 91 unsigned int num_clients; 92 93 const unsigned long *emem_regs; 94 unsigned int num_emem_regs; 95 96 unsigned int num_address_bits; 97 unsigned int atom_size; 98 99 u8 client_id_mask; 100 101 const struct tegra_smmu_soc *smmu; 102 }; 103 104 struct tegra_mc { 105 struct device *dev; 106 struct tegra_smmu *smmu; 107 void __iomem *regs; 108 struct clk *clk; 109 int irq; 110 111 const struct tegra_mc_soc *soc; 112 unsigned long tick; 113 114 struct tegra_mc_timing *timings; 115 unsigned int num_timings; 116 }; 117 118 void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate); 119 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc); 120 121 #endif /* __SOC_TEGRA_MC_H__ */ 122