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 */ 190