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gerrit-public.fairphone.software / kernel / msm-4.19 / 8550f328f45db6d37981eb2041bc465810245c03 / . / include / soc / tegra / bpmp.h
blob: 13dcd44e91bb5dabc57863aa5e40b87ddd76b2d2 [file] [log] [blame]
Thierry Reding983de5f2016-08-19 19:05:35 +0200[diff] [blame]1/*
2 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 */
13
14#ifndef __SOC_TEGRA_BPMP_H
15#define __SOC_TEGRA_BPMP_H
16
17#include <linux/mailbox_client.h>
18#include <linux/reset-controller.h>
19#include <linux/semaphore.h>
20#include <linux/types.h>
21
22#include <soc/tegra/bpmp-abi.h>
23
24struct tegra_bpmp_clk;
25
26struct tegra_bpmp_soc {
27 struct {
28 struct {
29 unsigned int offset;
30 unsigned int count;
31 unsigned int timeout;
32 } cpu_tx, thread, cpu_rx;
33 } channels;
34 unsigned int num_resets;
35};
36
37struct tegra_bpmp_mb_data {
38 u32 code;
39 u32 flags;
40 u8 data[MSG_DATA_MIN_SZ];
41} __packed;
42
43struct tegra_bpmp_channel {
44 struct tegra_bpmp *bpmp;
45 struct tegra_bpmp_mb_data *ib;
46 struct tegra_bpmp_mb_data *ob;
47 struct completion completion;
48 struct tegra_ivc *ivc;
49};
50
51typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq,
52 struct tegra_bpmp_channel *channel,
53 void *data);
54
55struct tegra_bpmp_mrq {
56 struct list_head list;
57 unsigned int mrq;
58 tegra_bpmp_mrq_handler_t handler;
59 void *data;
60};
61
62struct tegra_bpmp {
63 const struct tegra_bpmp_soc *soc;
64 struct device *dev;
65
66 struct {
67 struct gen_pool *pool;
68 dma_addr_t phys;
69 void *virt;
70 } tx, rx;
71
72 struct {
73 struct mbox_client client;
74 struct mbox_chan *channel;
75 } mbox;
76
77 struct tegra_bpmp_channel *channels;
78 unsigned int num_channels;
79
80 struct {
81 unsigned long *allocated;
82 unsigned long *busy;
83 unsigned int count;
84 struct semaphore lock;
85 } threaded;
86
87 struct list_head mrqs;
88 spinlock_t lock;
89
90 struct tegra_bpmp_clk **clocks;
91 unsigned int num_clocks;
92
93 struct reset_controller_dev rstc;
94};
95
96struct tegra_bpmp *tegra_bpmp_get(struct device *dev);
97void tegra_bpmp_put(struct tegra_bpmp *bpmp);
98
99struct tegra_bpmp_message {
100 unsigned int mrq;
101
102 struct {
103 const void *data;
104 size_t size;
105 } tx;
106
107 struct {
108 void *data;
109 size_t size;
110 } rx;
111};
112
113int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
114 struct tegra_bpmp_message *msg);
115int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
116 struct tegra_bpmp_message *msg);
117
118int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
119 tegra_bpmp_mrq_handler_t handler, void *data);
120void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
121 void *data);
122
123#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP)
124int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp);
125#else
126static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp)
127{
128 return 0;
129}
130#endif
131
132#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP)
133int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp);
134#else
135static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
136{
137 return 0;
138}
139#endif
140
141#endif /* __SOC_TEGRA_BPMP_H */