166 lines
3.4 KiB
C
166 lines
3.4 KiB
C
/*
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* Copyright (C) 2014 NVIDIA Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __SOC_TEGRA_MC_H__
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#define __SOC_TEGRA_MC_H__
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#include <linux/reset-controller.h>
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#include <linux/types.h>
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struct clk;
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struct device;
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struct page;
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struct tegra_smmu_enable {
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unsigned int reg;
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unsigned int bit;
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};
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struct tegra_mc_timing {
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unsigned long rate;
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u32 *emem_data;
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};
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/* latency allowance */
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struct tegra_mc_la {
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unsigned int reg;
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unsigned int shift;
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unsigned int mask;
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unsigned int def;
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};
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struct tegra_mc_client {
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unsigned int id;
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const char *name;
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unsigned int swgroup;
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unsigned int fifo_size;
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struct tegra_smmu_enable smmu;
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struct tegra_mc_la la;
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};
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struct tegra_smmu_swgroup {
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const char *name;
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unsigned int swgroup;
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unsigned int reg;
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};
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struct tegra_smmu_group_soc {
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const char *name;
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const unsigned int *swgroups;
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unsigned int num_swgroups;
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};
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struct tegra_smmu_soc {
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const struct tegra_mc_client *clients;
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unsigned int num_clients;
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const struct tegra_smmu_swgroup *swgroups;
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unsigned int num_swgroups;
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const struct tegra_smmu_group_soc *groups;
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unsigned int num_groups;
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bool supports_round_robin_arbitration;
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bool supports_request_limit;
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unsigned int num_tlb_lines;
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unsigned int num_asids;
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};
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struct tegra_mc;
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struct tegra_smmu;
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#ifdef CONFIG_TEGRA_IOMMU_SMMU
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struct tegra_smmu *tegra_smmu_probe(struct device *dev,
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const struct tegra_smmu_soc *soc,
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struct tegra_mc *mc);
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void tegra_smmu_remove(struct tegra_smmu *smmu);
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#else
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static inline struct tegra_smmu *
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tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc,
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struct tegra_mc *mc)
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{
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return NULL;
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}
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static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
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{
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}
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#endif
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struct tegra_mc_reset {
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const char *name;
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unsigned long id;
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unsigned int control;
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unsigned int status;
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unsigned int reset;
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unsigned int bit;
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};
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struct tegra_mc_reset_ops {
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int (*hotreset_assert)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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int (*hotreset_deassert)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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int (*block_dma)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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bool (*dma_idling)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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int (*unblock_dma)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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int (*reset_status)(struct tegra_mc *mc,
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const struct tegra_mc_reset *rst);
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};
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struct tegra_mc_soc {
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const struct tegra_mc_client *clients;
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unsigned int num_clients;
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const unsigned long *emem_regs;
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unsigned int num_emem_regs;
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unsigned int num_address_bits;
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unsigned int atom_size;
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u8 client_id_mask;
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const struct tegra_smmu_soc *smmu;
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u32 intmask;
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const struct tegra_mc_reset_ops *reset_ops;
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const struct tegra_mc_reset *resets;
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unsigned int num_resets;
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};
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struct tegra_mc {
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struct device *dev;
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struct tegra_smmu *smmu;
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void __iomem *regs, *regs2;
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struct clk *clk;
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int irq;
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const struct tegra_mc_soc *soc;
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unsigned long tick;
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struct tegra_mc_timing *timings;
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unsigned int num_timings;
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struct reset_controller_dev reset;
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spinlock_t lock;
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};
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void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
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unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
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#endif /* __SOC_TEGRA_MC_H__ */
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