Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
os
linux
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_group_soc {
55 const char *name;
56 const unsigned int *swgroups;
57 unsigned int num_swgroups;
58};
59
60struct tegra_smmu_soc {
61 const struct tegra_mc_client *clients;
62 unsigned int num_clients;
63
64 const struct tegra_smmu_swgroup *swgroups;
65 unsigned int num_swgroups;
66
67 const struct tegra_smmu_group_soc *groups;
68 unsigned int num_groups;
69
70 bool supports_round_robin_arbitration;
71 bool supports_request_limit;
72
73 unsigned int num_tlb_lines;
74 unsigned int num_asids;
75};
76
77struct tegra_mc;
78struct tegra_smmu;
79
80#ifdef CONFIG_TEGRA_IOMMU_SMMU
81struct tegra_smmu *tegra_smmu_probe(struct device *dev,
82 const struct tegra_smmu_soc *soc,
83 struct tegra_mc *mc);
84void tegra_smmu_remove(struct tegra_smmu *smmu);
85#else
86static inline struct tegra_smmu *
87tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc,
88 struct tegra_mc *mc)
89{
90 return NULL;
91}
92
93static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
94{
95}
96#endif
97
98struct tegra_mc_soc {
99 const struct tegra_mc_client *clients;
100 unsigned int num_clients;
101
102 const unsigned long *emem_regs;
103 unsigned int num_emem_regs;
104
105 unsigned int num_address_bits;
106 unsigned int atom_size;
107
108 u8 client_id_mask;
109
110 const struct tegra_smmu_soc *smmu;
111};
112
113struct tegra_mc {
114 struct device *dev;
115 struct tegra_smmu *smmu;
116 void __iomem *regs;
117 struct clk *clk;
118 int irq;
119
120 const struct tegra_mc_soc *soc;
121 unsigned long tick;
122
123 struct tegra_mc_timing *timings;
124 unsigned int num_timings;
125};
126
127void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
128unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
129
130#endif /* __SOC_TEGRA_MC_H__ */