drivers/remoteproc/remoteproc_internal.h

   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
  62 static inline void rproc_init_cdev(void)
  63 {
  64 }
  65
  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  */
  74 static inline int rproc_char_device_add(struct rproc *rproc)
  75 {
  76         return 0;
  77 }
  78
  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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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 */