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