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
18struct rproc;
19
20struct 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/**
28 * struct rproc_vdev_data - remoteproc virtio device data
29 * @rsc_offset: offset of the vdev's resource entry
30 * @id: virtio device id (as in virtio_ids.h)
31 * @index: vdev position versus other vdev declared in resource table
32 * @rsc: pointer to the vdev resource entry. Valid only during vdev init as
33 * the resource can be cached by rproc.
34 */
35struct rproc_vdev_data {
36 u32 rsc_offset;
37 unsigned int id;
38 u32 index;
39 struct fw_rsc_vdev *rsc;
40};
41
42static inline bool rproc_has_feature(struct rproc *rproc, unsigned int feature)
43{
44 return test_bit(feature, rproc->features);
45}
46
47static inline int rproc_set_feature(struct rproc *rproc, unsigned int feature)
48{
49 if (feature >= RPROC_MAX_FEATURES)
50 return -EINVAL;
51
52 set_bit(nr: feature, addr: rproc->features);
53
54 return 0;
55}
56
57/* from remoteproc_core.c */
58void rproc_release(struct kref *kref);
59int rproc_of_parse_firmware(struct device *dev, int index,
60 const char **fw_name);
61
62/* from remoteproc_virtio.c */
63irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
64
65/* from remoteproc_debugfs.c */
66void rproc_remove_trace_file(struct dentry *tfile);
67struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
68 struct rproc_debug_trace *trace);
69void rproc_delete_debug_dir(struct rproc *rproc);
70void rproc_create_debug_dir(struct rproc *rproc);
71void rproc_init_debugfs(void);
72void rproc_exit_debugfs(void);
73
74/* from remoteproc_sysfs.c */
75extern const struct class rproc_class;
76int rproc_init_sysfs(void);
77void rproc_exit_sysfs(void);
78
79#ifdef CONFIG_REMOTEPROC_CDEV
80void rproc_init_cdev(void);
81void rproc_exit_cdev(void);
82int rproc_char_device_add(struct rproc *rproc);
83void rproc_char_device_remove(struct rproc *rproc);
84#else
85static inline void rproc_init_cdev(void)
86{
87}
88
89static inline void rproc_exit_cdev(void)
90{
91}
92
93/*
94 * The character device interface is an optional feature, if it is not enabled
95 * the function should not return an error.
96 */
97static inline int rproc_char_device_add(struct rproc *rproc)
98{
99 return 0;
100}
101
102static inline void rproc_char_device_remove(struct rproc *rproc)
103{
104}
105#endif
106
107void rproc_free_vring(struct rproc_vring *rvring);
108int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
109int rproc_parse_vring(struct rproc_vdev *rvdev, struct fw_rsc_vdev *rsc, int i);
110
111phys_addr_t rproc_va_to_pa(void *cpu_addr);
112int rproc_trigger_recovery(struct rproc *rproc);
113
114int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw);
115u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw);
116int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw);
117int rproc_elf_load_rsc_table(struct rproc *rproc, const struct firmware *fw);
118struct resource_table *rproc_elf_find_loaded_rsc_table(struct rproc *rproc,
119 const struct firmware *fw);
120struct rproc_mem_entry *
121rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...);
122void rproc_add_rvdev(struct rproc *rproc, struct rproc_vdev *rvdev);
123void rproc_remove_rvdev(struct rproc_vdev *rvdev);
124
125static inline int rproc_prepare_device(struct rproc *rproc)
126{
127 if (rproc->ops->prepare)
128 return rproc->ops->prepare(rproc);
129
130 return 0;
131}
132
133static inline int rproc_unprepare_device(struct rproc *rproc)
134{
135 if (rproc->ops->unprepare)
136 return rproc->ops->unprepare(rproc);
137
138 return 0;
139}
140
141static inline int rproc_attach_device(struct rproc *rproc)
142{
143 if (rproc->ops->attach)
144 return rproc->ops->attach(rproc);
145
146 return 0;
147}
148
149static inline
150int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
151{
152 if (rproc->ops->sanity_check)
153 return rproc->ops->sanity_check(rproc, fw);
154
155 return 0;
156}
157
158static inline
159u64 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
160{
161 if (rproc->ops->get_boot_addr)
162 return rproc->ops->get_boot_addr(rproc, fw);
163
164 return 0;
165}
166
167static inline
168int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
169{
170 if (rproc->ops->load)
171 return rproc->ops->load(rproc, fw);
172
173 return -EINVAL;
174}
175
176static inline int rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
177{
178 if (rproc->ops->parse_fw)
179 return rproc->ops->parse_fw(rproc, fw);
180
181 return 0;
182}
183
184static inline
185int rproc_handle_rsc(struct rproc *rproc, u32 rsc_type, void *rsc, int offset,
186 int avail)
187{
188 if (rproc->ops->handle_rsc)
189 return rproc->ops->handle_rsc(rproc, rsc_type, rsc, offset,
190 avail);
191
192 return RSC_IGNORED;
193}
194
195static inline
196struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
197 const struct firmware *fw)
198{
199 if (rproc->ops->find_loaded_rsc_table)
200 return rproc->ops->find_loaded_rsc_table(rproc, fw);
201
202 return NULL;
203}
204
205static inline
206struct resource_table *rproc_get_loaded_rsc_table(struct rproc *rproc,
207 size_t *size)
208{
209 if (rproc->ops->get_loaded_rsc_table)
210 return rproc->ops->get_loaded_rsc_table(rproc, size);
211
212 return NULL;
213}
214
215static inline
216bool rproc_u64_fit_in_size_t(u64 val)
217{
218 if (sizeof(size_t) == sizeof(u64))
219 return true;
220
221 return (val <= (size_t) -1);
222}
223
224#endif /* REMOTEPROC_INTERNAL_H */
225

source code of linux/drivers/remoteproc/remoteproc_internal.h