1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Remote processor framework
4 *
5 * Copyright (C) 2011 Texas Instruments, Inc.
6 * Copyright (C) 2011 Google, Inc.
7 *
8 * Ohad Ben-Cohen <ohad@wizery.com>
9 * Brian Swetland <swetland@google.com>
10 */
11
12 #ifndef REMOTEPROC_INTERNAL_H
13 #define REMOTEPROC_INTERNAL_H
14
15 #include <linux/irqreturn.h>
16 #include <linux/firmware.h>
17
18 struct rproc;
19
20 struct rproc_debug_trace {
21 struct rproc *rproc;
22 struct dentry *tfile;
23 struct list_head node;
24 struct rproc_mem_entry trace_mem;
25 };
26
27 /* from remoteproc_core.c */
28 void rproc_release(struct kref *kref);
29 irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
30 void rproc_vdev_release(struct kref *ref);
31 int rproc_of_parse_firmware(struct device *dev, int index,
32 const char **fw_name);
33
34 /* from remoteproc_virtio.c */
35 int rproc_add_virtio_dev(struct rproc_vdev *rvdev, int id);
36 int rproc_remove_virtio_dev(struct device *dev, void *data);
37
38 /* from remoteproc_debugfs.c */
39 void rproc_remove_trace_file(struct dentry *tfile);
40 struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
41 struct rproc_debug_trace *trace);
42 void rproc_delete_debug_dir(struct rproc *rproc);
43 void rproc_create_debug_dir(struct rproc *rproc);
44 void rproc_init_debugfs(void);
45 void rproc_exit_debugfs(void);
46
47 /* from remoteproc_sysfs.c */
48 extern struct class rproc_class;
49 int rproc_init_sysfs(void);
50 void rproc_exit_sysfs(void);
51
52 /* from remoteproc_coredump.c */
53 void rproc_coredump_cleanup(struct rproc *rproc);
54 void rproc_coredump(struct rproc *rproc);
55
56 #ifdef CONFIG_REMOTEPROC_CDEV
57 void rproc_init_cdev(void);
58 void rproc_exit_cdev(void);
59 int rproc_char_device_add(struct rproc *rproc);
60 void rproc_char_device_remove(struct rproc *rproc);
61 #else
rproc_init_cdev(void)62 static inline void rproc_init_cdev(void)
63 {
64 }
65
rproc_exit_cdev(void)66 static inline void rproc_exit_cdev(void)
67 {
68 }
69
70 /*
71 * The character device interface is an optional feature, if it is not enabled
72 * the function should not return an error.
73 */
rproc_char_device_add(struct rproc * rproc)74 static inline int rproc_char_device_add(struct rproc *rproc)
75 {
76 return 0;
77 }
78
rproc_char_device_remove(struct rproc * rproc)79 static inline void rproc_char_device_remove(struct rproc *rproc)
80 {
81 }
82 #endif
83
84 void rproc_free_vring(struct rproc_vring *rvring);
85 int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
86
87 void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len);
88 phys_addr_t rproc_va_to_pa(void *cpu_addr);
89 int rproc_trigger_recovery(struct rproc *rproc);
90
91 int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw);
92 u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw);
93 int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw);
94 int rproc_elf_load_rsc_table(struct rproc *rproc, const struct firmware *fw);
95 struct resource_table *rproc_elf_find_loaded_rsc_table(struct rproc *rproc,
96 const struct firmware *fw);
97 struct rproc_mem_entry *
98 rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...);
99
rproc_prepare_device(struct rproc * rproc)100 static inline int rproc_prepare_device(struct rproc *rproc)
101 {
102 if (rproc->ops->prepare)
103 return rproc->ops->prepare(rproc);
104
105 return 0;
106 }
107
rproc_unprepare_device(struct rproc * rproc)108 static inline int rproc_unprepare_device(struct rproc *rproc)
109 {
110 if (rproc->ops->unprepare)
111 return rproc->ops->unprepare(rproc);
112
113 return 0;
114 }
115
rproc_attach_device(struct rproc * rproc)116 static inline int rproc_attach_device(struct rproc *rproc)
117 {
118 if (rproc->ops->attach)
119 return rproc->ops->attach(rproc);
120
121 return 0;
122 }
123
124 static inline
rproc_fw_sanity_check(struct rproc * rproc,const struct firmware * fw)125 int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
126 {
127 if (rproc->ops->sanity_check)
128 return rproc->ops->sanity_check(rproc, fw);
129
130 return 0;
131 }
132
133 static inline
rproc_get_boot_addr(struct rproc * rproc,const struct firmware * fw)134 u64 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
135 {
136 if (rproc->ops->get_boot_addr)
137 return rproc->ops->get_boot_addr(rproc, fw);
138
139 return 0;
140 }
141
142 static inline
rproc_load_segments(struct rproc * rproc,const struct firmware * fw)143 int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
144 {
145 if (rproc->ops->load)
146 return rproc->ops->load(rproc, fw);
147
148 return -EINVAL;
149 }
150
rproc_parse_fw(struct rproc * rproc,const struct firmware * fw)151 static inline int rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
152 {
153 if (rproc->ops->parse_fw)
154 return rproc->ops->parse_fw(rproc, fw);
155
156 return 0;
157 }
158
159 static inline
rproc_handle_rsc(struct rproc * rproc,u32 rsc_type,void * rsc,int offset,int avail)160 int rproc_handle_rsc(struct rproc *rproc, u32 rsc_type, void *rsc, int offset,
161 int avail)
162 {
163 if (rproc->ops->handle_rsc)
164 return rproc->ops->handle_rsc(rproc, rsc_type, rsc, offset,
165 avail);
166
167 return RSC_IGNORED;
168 }
169
170 static inline
rproc_find_loaded_rsc_table(struct rproc * rproc,const struct firmware * fw)171 struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
172 const struct firmware *fw)
173 {
174 if (rproc->ops->find_loaded_rsc_table)
175 return rproc->ops->find_loaded_rsc_table(rproc, fw);
176
177 return NULL;
178 }
179
180 static inline
rproc_u64_fit_in_size_t(u64 val)181 bool rproc_u64_fit_in_size_t(u64 val)
182 {
183 if (sizeof(size_t) == sizeof(u64))
184 return true;
185
186 return (val <= (size_t) -1);
187 }
188
189 #endif /* REMOTEPROC_INTERNAL_H */
190