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
14struct clk;
15struct device;
16struct page;
17
18struct tegra_smmu_enable {
19	unsigned int reg;
20	unsigned int bit;
21};
22
23struct tegra_mc_timing {
24	unsigned long rate;
25
26	u32 *emem_data;
27};
28
29/* latency allowance */
30struct tegra_mc_la {
31	unsigned int reg;
32	unsigned int shift;
33	unsigned int mask;
34	unsigned int def;
35};
36
37struct 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
48struct tegra_smmu_swgroup {
49	const char *name;
50	unsigned int swgroup;
51	unsigned int reg;
52};
53
54struct 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
68struct tegra_mc;
69struct tegra_smmu;
70
71#ifdef CONFIG_TEGRA_IOMMU_SMMU
72struct tegra_smmu *tegra_smmu_probe(struct device *dev,
73				    const struct tegra_smmu_soc *soc,
74				    struct tegra_mc *mc);
75void tegra_smmu_remove(struct tegra_smmu *smmu);
76#else
77static inline struct tegra_smmu *
78tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc,
79		 struct tegra_mc *mc)
80{
81	return NULL;
82}
83
84static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
85{
86}
87#endif
88
89struct 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
104struct 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
118void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
119unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
120
121#endif /* __SOC_TEGRA_MC_H__ */
122