drivers/remoteproc/remoteproc_internal.h

   1 /*
   2  * Remote processor framework
   3  *
   4  * Copyright (C) 2011 Texas Instruments, Inc.
   5  * Copyright (C) 2011 Google, Inc.
   6  *
   7  * Ohad Ben-Cohen <ohad@wizery.com>
   8  * Brian Swetland <swetland@google.com>
   9  *
  10  * This software is licensed under the terms of the GNU General Public
  11  * License version 2, as published by the Free Software Foundation, and
  12  * may be copied, distributed, and modified under those terms.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  */
  19
  20 #ifndef REMOTEPROC_INTERNAL_H
  21 #define REMOTEPROC_INTERNAL_H
  22
  23 #include <linux/irqreturn.h>
  24 #include <linux/firmware.h>
  25
  26 struct rproc;
  27
  28 /**
  29  * struct rproc_fw_ops - firmware format specific operations.
  30  * @find_rsc_table:     find the resource table inside the firmware image
  31  * @find_loaded_rsc_table: find the loaded resouce table
  32  * @load:               load firmeware to memory, where the remote processor
  33  *                      expects to find it
  34  * @sanity_check:       sanity check the fw image
  35  * @get_boot_addr:      get boot address to entry point specified in firmware
  36  */
  37 struct rproc_fw_ops {
  38         struct resource_table *(*find_rsc_table)(struct rproc *rproc,
  39                                                  const struct firmware *fw,
  40                                                  int *tablesz);
  41         struct resource_table *(*find_loaded_rsc_table)(
  42                                 struct rproc *rproc, const struct firmware *fw);
  43         int (*load)(struct rproc *rproc, const struct firmware *fw);
  44         int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
  45         u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
  46 };
  47
  48 /* from remoteproc_core.c */
  49 void rproc_release(struct kref *kref);
  50 irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
  51 void rproc_vdev_release(struct kref *ref);
  52
  53 /* from remoteproc_virtio.c */
  54 int rproc_add_virtio_dev(struct rproc_vdev *rvdev, int id);
  55 void rproc_remove_virtio_dev(struct rproc_vdev *rvdev);
  56
  57 /* from remoteproc_debugfs.c */
  58 void rproc_remove_trace_file(struct dentry *tfile);
  59 struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
  60                                        struct rproc_mem_entry *trace);
  61 void rproc_delete_debug_dir(struct rproc *rproc);
  62 void rproc_create_debug_dir(struct rproc *rproc);
  63 void rproc_init_debugfs(void);
  64 void rproc_exit_debugfs(void);
  65
  66 /* from remoteproc_sysfs.c */
  67 extern struct class rproc_class;
  68 int rproc_init_sysfs(void);
  69 void rproc_exit_sysfs(void);
  70
  71 void rproc_free_vring(struct rproc_vring *rvring);
  72 int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
  73
  74 void *rproc_da_to_va(struct rproc *rproc, u64 da, int len);
  75 int rproc_trigger_recovery(struct rproc *rproc);
  76
  77 static inline
  78 int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
  79 {
  80         if (rproc->fw_ops->sanity_check)
  81                 return rproc->fw_ops->sanity_check(rproc, fw);
  82
  83         return 0;
  84 }
  85
  86 static inline
  87 u32 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
  88 {
  89         if (rproc->fw_ops->get_boot_addr)
  90                 return rproc->fw_ops->get_boot_addr(rproc, fw);
  91
  92         return 0;
  93 }
  94
  95 static inline
  96 int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
  97 {
  98         if (rproc->fw_ops->load)
  99                 return rproc->fw_ops->load(rproc, fw);
 100
 101         return -EINVAL;
 102 }
 103
 104 static inline
 105 struct resource_table *rproc_find_rsc_table(struct rproc *rproc,
 106                                             const struct firmware *fw,
 107                                             int *tablesz)
 108 {
 109         if (rproc->fw_ops->find_rsc_table)
 110                 return rproc->fw_ops->find_rsc_table(rproc, fw, tablesz);
 111
 112         return NULL;
 113 }
 114
 115 static inline
 116 struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
 117                                                    const struct firmware *fw)
 118 {
 119         if (rproc->fw_ops->find_loaded_rsc_table)
 120                 return rproc->fw_ops->find_loaded_rsc_table(rproc, fw);
 121
 122         return NULL;
 123 }
 124
 125 extern const struct rproc_fw_ops rproc_elf_fw_ops;
 126
 127 #endif /* REMOTEPROC_INTERNAL_H */