1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2015
* Texas Instruments Incorporated - http://www.ti.com/
*/
#ifndef _RPROC_H_
#define _RPROC_H_
/*
* Note: The platform data support is not meant for use with newer
* platforms. This is meant only for legacy devices. This mode of
* initialization *will* be eventually removed once all necessary
* platforms have moved to dm/fdt.
*/
#include <dm/platdata.h> /* For platform data support - non dt world */
/**
* enum rproc_mem_type - What type of memory model does the rproc use
* @RPROC_INTERNAL_MEMORY_MAPPED: Remote processor uses own memory and is memory
* mapped to the host processor over an address range.
*
* Please note that this is an enumeration of memory model of different types
* of remote processors. Few of the remote processors do have own internal
* memories, while others use external memory for instruction and data.
*/
enum rproc_mem_type {
RPROC_INTERNAL_MEMORY_MAPPED = 0,
};
/**
* struct dm_rproc_uclass_pdata - platform data for a CPU
* @name: Platform-specific way of naming the Remote proc
* @mem_type: one of 'enum rproc_mem_type'
* @driver_plat_data: driver specific platform data that may be needed.
*
* This can be accessed with dev_get_uclass_platdata() for any UCLASS_REMOTEPROC
* device.
*
*/
struct dm_rproc_uclass_pdata {
const char *name;
enum rproc_mem_type mem_type;
void *driver_plat_data;
};
/**
* struct dm_rproc_ops - Driver model remote proc operations.
*
* This defines the operations provided by remote proc driver.
*/
struct dm_rproc_ops {
/**
* init() - Initialize the remoteproc device (optional)
*
* This is called after the probe is completed allowing the remote
* processor drivers to split up the initializations between probe and
* init if needed.
*
* @dev: Remote proc device
* @return 0 if all ok, else appropriate error value.
*/
int (*init)(struct udevice *dev);
/**
* load() - Load the remoteproc device using data provided (mandatory)
*
* Load the remoteproc device with an image, do not start the device.
*
* @dev: Remote proc device
* @addr: Address of the image to be loaded
* @size: Size of the image to be loaded
* @return 0 if all ok, else appropriate error value.
*/
int (*load)(struct udevice *dev, ulong addr, ulong size);
/**
* start() - Start the remoteproc device (mandatory)
*
* @dev: Remote proc device
* @return 0 if all ok, else appropriate error value.
*/
int (*start)(struct udevice *dev);
/**
* stop() - Stop the remoteproc device (optional)
*
* @dev: Remote proc device
* @return 0 if all ok, else appropriate error value.
*/
int (*stop)(struct udevice *dev);
/**
* reset() - Reset the remoteproc device (optional)
*
* @dev: Remote proc device
* @return 0 if all ok, else appropriate error value.
*/
int (*reset)(struct udevice *dev);
/**
* is_running() - Check if the remote processor is running (optional)
*
* @dev: Remote proc device
* @return 0 if running, 1 if not running, -ve on error.
*/
int (*is_running)(struct udevice *dev);
/**
* ping() - Ping the remote device for basic communication (optional)
*
* @dev: Remote proc device
* @return 0 on success, 1 if not responding, -ve on other errors.
*/
int (*ping)(struct udevice *dev);
/**
* device_to_virt() - Return translated virtual address (optional)
*
* Translate a device address (remote processor view) to virtual
* address (main processor view).
*
* @dev: Remote proc device
* @da: Device address
* @return virtual address.
*/
void * (*device_to_virt)(struct udevice *dev, ulong da);
};
/* Accessor */
#define rproc_get_ops(dev) ((struct dm_rproc_ops *)(dev)->driver->ops)
#if CONFIG_IS_ENABLED(REMOTEPROC)
/**
* rproc_init() - Initialize all bound remote proc devices
* @return 0 if all ok, else appropriate error value.
*/
int rproc_init(void);
/**
* rproc_dev_init() - Initialize a remote proc device based on id
* @id: id of the remote processor
* @return 0 if all ok, else appropriate error value.
*/
int rproc_dev_init(int id);
/**
* rproc_is_initialized() - check to see if remoteproc devices are initialized
* @return true if all devices are initialized, false otherwise.
*/
bool rproc_is_initialized(void);
/**
* rproc_load() - load binary or elf to a remote processor
* @id: id of the remote processor
* @addr: address in memory where the image is located
* @size: size of the image
* @return 0 if all ok, else appropriate error value.
*/
int rproc_load(int id, ulong addr, ulong size);
/**
* rproc_start() - Start a remote processor
* @id: id of the remote processor
* @return 0 if all ok, else appropriate error value.
*/
int rproc_start(int id);
/**
* rproc_stop() - Stop a remote processor
* @id: id of the remote processor
* @return 0 if all ok, else appropriate error value.
*/
int rproc_stop(int id);
/**
* rproc_reset() - reset a remote processor
* @id: id of the remote processor
* @return 0 if all ok, else appropriate error value.
*/
int rproc_reset(int id);
/**
* rproc_ping() - ping a remote processor to check if it can communicate
* @id: id of the remote processor
* @return 0 if all ok, else appropriate error value.
*
* NOTE: this might need communication path available, which is not implemented
* as part of remoteproc framework - hook on to appropriate bus architecture to
* do the same
*/
int rproc_ping(int id);
/**
* rproc_is_running() - check to see if remote processor is running
* @id: id of the remote processor
* @return 0 if running, 1 if not running, -ve on error.
*
* NOTE: this may not involve actual communication capability of the remote
* processor, but just ensures that it is out of reset and executing code.
*/
int rproc_is_running(int id);
/**
* rproc_elf32_sanity_check() - Verify if an image is a valid ELF32 one
*
* Check if a valid ELF32 image exists at the given memory location. Verify
* basic ELF32 format requirements like magic number and sections size.
*
* @addr: address of the image to verify
* @size: size of the image
* @return 0 if the image looks good, else appropriate error value.
*/
int rproc_elf32_sanity_check(ulong addr, ulong size);
/**
* rproc_elf32_load_image() - load an ELF32 image
* @dev: device loading the ELF32 image
* @addr: valid ELF32 image address
* @return 0 if the image is successfully loaded, else appropriate error value.
*/
int rproc_elf32_load_image(struct udevice *dev, unsigned long addr);
#else
static inline int rproc_init(void) { return -ENOSYS; }
static inline int rproc_dev_init(int id) { return -ENOSYS; }
static inline bool rproc_is_initialized(void) { return false; }
static inline int rproc_load(int id, ulong addr, ulong size) { return -ENOSYS; }
static inline int rproc_start(int id) { return -ENOSYS; }
static inline int rproc_stop(int id) { return -ENOSYS; }
static inline int rproc_reset(int id) { return -ENOSYS; }
static inline int rproc_ping(int id) { return -ENOSYS; }
static inline int rproc_is_running(int id) { return -ENOSYS; }
static inline int rproc_elf32_sanity_check(ulong addr,
ulong size) { return -ENOSYS; }
static inline int rproc_elf32_load_image(struct udevice *dev,
unsigned long addr) { return -ENOSYS; }
#endif
#endif /* _RPROC_H_ */
|
