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 | |
18 | struct tegra_bpmp_clk; |
19 | struct tegra_bpmp_ops; |
20 | |
21 | struct 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 | |
34 | struct 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 | |
52 | struct 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 | |
61 | typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq, |
62 | struct tegra_bpmp_channel *channel, |
63 | void *data); |
64 | |
65 | struct tegra_bpmp_mrq { |
66 | struct list_head list; |
67 | unsigned int mrq; |
68 | tegra_bpmp_mrq_handler_t handler; |
69 | void *data; |
70 | }; |
71 | |
72 | struct 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 | |
111 | struct 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) |
129 | struct tegra_bpmp *tegra_bpmp_get(struct device *dev); |
130 | void tegra_bpmp_put(struct tegra_bpmp *bpmp); |
131 | int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, |
132 | struct tegra_bpmp_message *msg); |
133 | int tegra_bpmp_transfer(struct tegra_bpmp *bpmp, |
134 | struct tegra_bpmp_message *msg); |
135 | void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code, |
136 | const void *data, size_t size); |
137 | |
138 | int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, |
139 | tegra_bpmp_mrq_handler_t handler, void *data); |
140 | void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, |
141 | void *data); |
142 | bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq); |
143 | #else |
144 | static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev) |
145 | { |
146 | return ERR_PTR(error: -ENOTSUPP); |
147 | } |
148 | static inline void tegra_bpmp_put(struct tegra_bpmp *bpmp) |
149 | { |
150 | } |
151 | static inline int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, |
152 | struct tegra_bpmp_message *msg) |
153 | { |
154 | return -ENOTSUPP; |
155 | } |
156 | static inline int tegra_bpmp_transfer(struct tegra_bpmp *bpmp, |
157 | struct tegra_bpmp_message *msg) |
158 | { |
159 | return -ENOTSUPP; |
160 | } |
161 | static inline void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, |
162 | int code, const void *data, |
163 | size_t size) |
164 | { |
165 | } |
166 | |
167 | static 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 | } |
174 | static inline void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, |
175 | unsigned int mrq, void *data) |
176 | { |
177 | } |
178 | |
179 | static inline bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, |
180 | unsigned int mrq) |
181 | { |
182 | return false; |
183 | } |
184 | #endif |
185 | |
186 | void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp); |
187 | |
188 | #if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP) |
189 | int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp); |
190 | #else |
191 | static 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) |
198 | int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp); |
199 | #else |
200 | static 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) |
207 | int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp); |
208 | #else |
209 | static 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) |
216 | int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp); |
217 | #else |
218 | static 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 */ |
226 | |