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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 */
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
4 */
5
6#ifndef __SOC_TEGRA_BPMP_H
7#define __SOC_TEGRA_BPMP_H
8
9#include <linux/iosys-map.h>
10#include <linux/mailbox_client.h>
11#include <linux/pm_domain.h>
12#include <linux/reset-controller.h>
13#include <linux/semaphore.h>
14#include <linux/types.h>
15
16#include <soc/tegra/bpmp-abi.h>
17
18struct tegra_bpmp_clk;
19struct tegra_bpmp_ops;
20
21struct tegra_bpmp_soc {
22 struct {
23 struct {
24 unsigned int offset;
25 unsigned int count;
26 unsigned int timeout;
27 } cpu_tx, thread, cpu_rx;
28 } channels;
29
30 const struct tegra_bpmp_ops *ops;
31 unsigned int num_resets;
32};
33
34struct tegra_bpmp_mb_data {
35 u32 code;
36 u32 flags;
37 u8 data[MSG_DATA_MIN_SZ];
38} __packed;
39
40#define tegra_bpmp_mb_read(dst, mb, size) \
41 iosys_map_memcpy_from(dst, mb, offsetof(struct tegra_bpmp_mb_data, data), size)
42
43#define tegra_bpmp_mb_write(mb, src, size) \
44 iosys_map_memcpy_to(mb, offsetof(struct tegra_bpmp_mb_data, data), src, size)
45
46#define tegra_bpmp_mb_read_field(mb, field) \
47 iosys_map_rd_field(mb, 0, struct tegra_bpmp_mb_data, field)
48
49#define tegra_bpmp_mb_write_field(mb, field, value) \
50 iosys_map_wr_field(mb, 0, struct tegra_bpmp_mb_data, field, value)
51
52struct tegra_bpmp_channel {
53 struct tegra_bpmp *bpmp;
54 struct iosys_map ib;
55 struct iosys_map ob;
56 struct completion completion;
57 struct tegra_ivc *ivc;
58 unsigned int index;
59};
60
61typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq,
62 struct tegra_bpmp_channel *channel,
63 void *data);
64
65struct tegra_bpmp_mrq {
66 struct list_head list;
67 unsigned int mrq;
68 tegra_bpmp_mrq_handler_t handler;
69 void *data;
70};
71
72struct tegra_bpmp {
73 const struct tegra_bpmp_soc *soc;
74 struct device *dev;
75 void *priv;
76
77 struct {
78 struct mbox_client client;
79 struct mbox_chan *channel;
80 } mbox;
81
82 spinlock_t atomic_tx_lock;
83 struct tegra_bpmp_channel *tx_channel, *rx_channel, *threaded_channels;
84
85 struct {
86 unsigned long *allocated;
87 unsigned long *busy;
88 unsigned int count;
89 struct semaphore lock;
90 } threaded;
91
92 struct list_head mrqs;
93 spinlock_t lock;
94
95 struct tegra_bpmp_clk **clocks;
96 unsigned int num_clocks;
97
98 struct reset_controller_dev rstc;
99
100 struct genpd_onecell_data genpd;
101
102#ifdef CONFIG_DEBUG_FS
103 struct dentry *debugfs_mirror;
104#endif
105
106 bool suspended;
107};
108
109#define TEGRA_BPMP_MESSAGE_RESET BIT(0)
110
111struct tegra_bpmp_message {
112 unsigned int mrq;
113
114 struct {
115 const void *data;
116 size_t size;
117 } tx;
118
119 struct {
120 void *data;
121 size_t size;
122 int ret;
123 } rx;
124
125 unsigned long flags;
126};
127
128#if IS_ENABLED(CONFIG_TEGRA_BPMP)
129struct tegra_bpmp *tegra_bpmp_get(struct device *dev);
130void tegra_bpmp_put(struct tegra_bpmp *bpmp);
131int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
132 struct tegra_bpmp_message *msg);
133int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
134 struct tegra_bpmp_message *msg);
135void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,
136 const void *data, size_t size);
137
138int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
139 tegra_bpmp_mrq_handler_t handler, void *data);
140void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
141 void *data);
142bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq);
143#else
144static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev)
145{
146 return ERR_PTR(-ENOTSUPP);
147}
148static inline void tegra_bpmp_put(struct tegra_bpmp *bpmp)
149{
150}
151static inline int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
152 struct tegra_bpmp_message *msg)
153{
154 return -ENOTSUPP;
155}
156static inline int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
157 struct tegra_bpmp_message *msg)
158{
159 return -ENOTSUPP;
160}
161static inline void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel,
162 int code, const void *data,
163 size_t size)
164{
165}
166
167static inline int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp,
168 unsigned int mrq,
169 tegra_bpmp_mrq_handler_t handler,
170 void *data)
171{
172 return -ENOTSUPP;
173}
174static inline void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp,
175 unsigned int mrq, void *data)
176{
177}
178
179static inline bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp,
180 unsigned int mrq)
181{
182 return false;
183}
184#endif
185
186void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp);
187
188#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP)
189int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp);
190#else
191static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp)
192{
193 return 0;
194}
195#endif
196
197#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP)
198int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp);
199#else
200static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
201{
202 return 0;
203}
204#endif
205
206#if IS_ENABLED(CONFIG_SOC_TEGRA_POWERGATE_BPMP)
207int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp);
208#else
209static inline int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp)
210{
211 return 0;
212}
213#endif
214
215#if IS_ENABLED(CONFIG_DEBUG_FS)
216int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp);
217#else
218static inline int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp)
219{
220 return 0;
221}
222#endif
223
224
225#endif /* __SOC_TEGRA_BPMP_H */