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