1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2014 NVIDIA Corporation 4 */ 5 6 #ifndef __SOC_TEGRA_MC_H__ 7 #define __SOC_TEGRA_MC_H__ 8 9 #include <linux/bits.h> 10 #include <linux/debugfs.h> 11 #include <linux/err.h> 12 #include <linux/interconnect-provider.h> 13 #include <linux/irq.h> 14 #include <linux/reset-controller.h> 15 #include <linux/types.h> 16 #include <linux/tegra-icc.h> 17 18 struct clk; 19 struct device; 20 struct page; 21 22 struct tegra_mc_timing { 23 unsigned long rate; 24 25 u32 *emem_data; 26 }; 27 28 struct tegra_mc_client { 29 unsigned int id; 30 unsigned int bpmp_id; 31 enum tegra_icc_client_type type; 32 const char *name; 33 /* 34 * For Tegra210 and earlier, this is the SWGROUP ID used for IOVA translations in the 35 * Tegra SMMU, whereas on Tegra186 and later this is the ID used to override the ARM SMMU 36 * stream ID used for IOVA translations for the given memory client. 37 */ 38 union { 39 unsigned int swgroup; 40 unsigned int sid; 41 }; 42 43 unsigned int fifo_size; 44 45 struct { 46 /* Tegra SMMU enable (Tegra210 and earlier) */ 47 struct { 48 unsigned int reg; 49 unsigned int bit; 50 } smmu; 51 52 /* latency allowance */ 53 struct { 54 unsigned int reg; 55 unsigned int shift; 56 unsigned int mask; 57 unsigned int def; 58 } la; 59 60 /* stream ID overrides (Tegra186 and later) */ 61 struct { 62 unsigned int override; 63 unsigned int security; 64 } sid; 65 } regs; 66 }; 67 68 struct tegra_smmu_swgroup { 69 const char *name; 70 unsigned int swgroup; 71 unsigned int reg; 72 }; 73 74 struct tegra_smmu_group_soc { 75 const char *name; 76 const unsigned int *swgroups; 77 unsigned int num_swgroups; 78 }; 79 80 struct tegra_smmu_soc { 81 const struct tegra_mc_client *clients; 82 unsigned int num_clients; 83 84 const struct tegra_smmu_swgroup *swgroups; 85 unsigned int num_swgroups; 86 87 const struct tegra_smmu_group_soc *groups; 88 unsigned int num_groups; 89 90 bool supports_round_robin_arbitration; 91 bool supports_request_limit; 92 93 unsigned int num_tlb_lines; 94 unsigned int num_asids; 95 }; 96 97 struct tegra_mc; 98 struct tegra_smmu; 99 100 #ifdef CONFIG_TEGRA_IOMMU_SMMU 101 struct tegra_smmu *tegra_smmu_probe(struct device *dev, 102 const struct tegra_smmu_soc *soc, 103 struct tegra_mc *mc); 104 void tegra_smmu_remove(struct tegra_smmu *smmu); 105 #else 106 static inline struct tegra_smmu * 107 tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc, 108 struct tegra_mc *mc) 109 { 110 return NULL; 111 } 112 113 static inline void tegra_smmu_remove(struct tegra_smmu *smmu) 114 { 115 } 116 #endif 117 118 struct tegra_mc_reset { 119 const char *name; 120 unsigned long id; 121 unsigned int control; 122 unsigned int status; 123 unsigned int reset; 124 unsigned int bit; 125 }; 126 127 struct tegra_mc_reset_ops { 128 int (*hotreset_assert)(struct tegra_mc *mc, 129 const struct tegra_mc_reset *rst); 130 int (*hotreset_deassert)(struct tegra_mc *mc, 131 const struct tegra_mc_reset *rst); 132 int (*block_dma)(struct tegra_mc *mc, 133 const struct tegra_mc_reset *rst); 134 bool (*dma_idling)(struct tegra_mc *mc, 135 const struct tegra_mc_reset *rst); 136 int (*unblock_dma)(struct tegra_mc *mc, 137 const struct tegra_mc_reset *rst); 138 int (*reset_status)(struct tegra_mc *mc, 139 const struct tegra_mc_reset *rst); 140 }; 141 142 #define TEGRA_MC_ICC_TAG_DEFAULT 0 143 #define TEGRA_MC_ICC_TAG_ISO BIT(0) 144 145 struct tegra_mc_icc_ops { 146 int (*set)(struct icc_node *src, struct icc_node *dst); 147 int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw, 148 u32 peak_bw, u32 *agg_avg, u32 *agg_peak); 149 struct icc_node* (*xlate)(const struct of_phandle_args *spec, void *data); 150 struct icc_node_data *(*xlate_extended)(const struct of_phandle_args *spec, 151 void *data); 152 int (*get_bw)(struct icc_node *node, u32 *avg, u32 *peak); 153 }; 154 155 struct icc_node *tegra_mc_icc_xlate(const struct of_phandle_args *spec, 156 void *data); 157 extern const struct tegra_mc_icc_ops tegra_mc_icc_ops; 158 159 struct tegra_mc_ops { 160 /* 161 * @probe: Callback to set up SoC-specific bits of the memory controller. This is called 162 * after basic, common set up that is done by the SoC-agnostic bits. 163 */ 164 int (*probe)(struct tegra_mc *mc); 165 void (*remove)(struct tegra_mc *mc); 166 int (*resume)(struct tegra_mc *mc); 167 irqreturn_t (*handle_irq)(int irq, void *data); 168 int (*probe_device)(struct tegra_mc *mc, struct device *dev); 169 }; 170 171 struct tegra_mc_soc { 172 const struct tegra_mc_client *clients; 173 unsigned int num_clients; 174 175 const unsigned long *emem_regs; 176 unsigned int num_emem_regs; 177 178 unsigned int num_address_bits; 179 unsigned int atom_size; 180 181 unsigned int num_carveouts; 182 183 u16 client_id_mask; 184 u8 num_channels; 185 186 const struct tegra_smmu_soc *smmu; 187 188 u32 intmask; 189 u32 ch_intmask; 190 u32 global_intstatus_channel_shift; 191 bool has_addr_hi_reg; 192 193 const struct tegra_mc_reset_ops *reset_ops; 194 const struct tegra_mc_reset *resets; 195 unsigned int num_resets; 196 197 const struct tegra_mc_icc_ops *icc_ops; 198 const struct tegra_mc_ops *ops; 199 }; 200 201 struct tegra_mc { 202 struct tegra_bpmp *bpmp; 203 struct device *dev; 204 struct tegra_smmu *smmu; 205 void __iomem *regs; 206 void __iomem *bcast_ch_regs; 207 void __iomem **ch_regs; 208 struct clk *clk; 209 int irq; 210 211 const struct tegra_mc_soc *soc; 212 unsigned long tick; 213 214 struct tegra_mc_timing *timings; 215 unsigned int num_timings; 216 unsigned int num_channels; 217 218 bool bwmgr_mrq_supported; 219 struct reset_controller_dev reset; 220 221 struct icc_provider provider; 222 223 spinlock_t lock; 224 225 struct { 226 struct dentry *root; 227 } debugfs; 228 }; 229 230 int tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate); 231 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc); 232 233 #ifdef CONFIG_TEGRA_MC 234 struct tegra_mc *devm_tegra_memory_controller_get(struct device *dev); 235 int tegra_mc_probe_device(struct tegra_mc *mc, struct device *dev); 236 int tegra_mc_get_carveout_info(struct tegra_mc *mc, unsigned int id, 237 phys_addr_t *base, u64 *size); 238 #else 239 static inline struct tegra_mc * 240 devm_tegra_memory_controller_get(struct device *dev) 241 { 242 return ERR_PTR(-ENODEV); 243 } 244 245 static inline int 246 tegra_mc_probe_device(struct tegra_mc *mc, struct device *dev) 247 { 248 return -ENODEV; 249 } 250 251 static inline int 252 tegra_mc_get_carveout_info(struct tegra_mc *mc, unsigned int id, 253 phys_addr_t *base, u64 *size) 254 { 255 return -ENODEV; 256 } 257 #endif 258 259 #endif /* __SOC_TEGRA_MC_H__ */ 260