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2aefbef041
This patch adds a sysfs interface to rproc allowing the firmware name and processor state to be changed dynamically. State was previously available in debugfs, and is replicated here. The firmware file allows retrieval of the running firmware name, and a new one to be specified at run time, so long as the remote processor has been stopped. Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/*
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* Remote processor framework
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*
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* Copyright (C) 2011 Texas Instruments, Inc.
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* Copyright (C) 2011 Google, Inc.
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*
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* Ohad Ben-Cohen <ohad@wizery.com>
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* Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef REMOTEPROC_INTERNAL_H
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#define REMOTEPROC_INTERNAL_H
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#include <linux/irqreturn.h>
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#include <linux/firmware.h>
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struct rproc;
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/**
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* struct rproc_fw_ops - firmware format specific operations.
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* @find_rsc_table: find the resource table inside the firmware image
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* @find_loaded_rsc_table: find the loaded resouce table
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* @load: load firmeware to memory, where the remote processor
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* expects to find it
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* @sanity_check: sanity check the fw image
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* @get_boot_addr: get boot address to entry point specified in firmware
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*/
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struct rproc_fw_ops {
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struct resource_table *(*find_rsc_table)(struct rproc *rproc,
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const struct firmware *fw,
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int *tablesz);
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struct resource_table *(*find_loaded_rsc_table)(
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struct rproc *rproc, const struct firmware *fw);
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int (*load)(struct rproc *rproc, const struct firmware *fw);
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int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
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u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
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};
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/* from remoteproc_core.c */
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void rproc_release(struct kref *kref);
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irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
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int rproc_boot_nowait(struct rproc *rproc);
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/* from remoteproc_virtio.c */
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int rproc_add_virtio_dev(struct rproc_vdev *rvdev, int id);
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void rproc_remove_virtio_dev(struct rproc_vdev *rvdev);
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/* from remoteproc_debugfs.c */
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void rproc_remove_trace_file(struct dentry *tfile);
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struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
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struct rproc_mem_entry *trace);
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void rproc_delete_debug_dir(struct rproc *rproc);
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void rproc_create_debug_dir(struct rproc *rproc);
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void rproc_init_debugfs(void);
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void rproc_exit_debugfs(void);
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/* from remoteproc_sysfs.c */
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extern struct class rproc_class;
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int rproc_init_sysfs(void);
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void rproc_exit_sysfs(void);
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void rproc_free_vring(struct rproc_vring *rvring);
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int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
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void *rproc_da_to_va(struct rproc *rproc, u64 da, int len);
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int rproc_trigger_recovery(struct rproc *rproc);
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static inline
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int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
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{
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if (rproc->fw_ops->sanity_check)
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return rproc->fw_ops->sanity_check(rproc, fw);
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return 0;
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}
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static inline
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u32 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
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{
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if (rproc->fw_ops->get_boot_addr)
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return rproc->fw_ops->get_boot_addr(rproc, fw);
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return 0;
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}
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static inline
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int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
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{
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if (rproc->fw_ops->load)
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return rproc->fw_ops->load(rproc, fw);
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return -EINVAL;
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}
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static inline
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struct resource_table *rproc_find_rsc_table(struct rproc *rproc,
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const struct firmware *fw,
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int *tablesz)
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{
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if (rproc->fw_ops->find_rsc_table)
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return rproc->fw_ops->find_rsc_table(rproc, fw, tablesz);
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return NULL;
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}
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static inline
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struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
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const struct firmware *fw)
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{
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if (rproc->fw_ops->find_loaded_rsc_table)
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return rproc->fw_ops->find_loaded_rsc_table(rproc, fw);
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return NULL;
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}
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extern const struct rproc_fw_ops rproc_elf_fw_ops;
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#endif /* REMOTEPROC_INTERNAL_H */
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