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Diffstat (limited to 'include/remoteproc.h')
| -rw-r--r-- | include/remoteproc.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/include/remoteproc.h b/include/remoteproc.h new file mode 100644 index 0000000000..c6e044d3b8 --- /dev/null +++ b/include/remoteproc.h @@ -0,0 +1,162 @@ +/* + * (C) Copyright 2015 + * Texas Instruments Incorporated - http://www.ti.com/ + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _RPROC_H_ +#define _RPROC_H_ + +/* + * Note: The platform data support is not meant for use with newer + * platforms. This is meant only for legacy devices. This mode of + * initialization *will* be eventually removed once all necessary + * platforms have moved to dm/fdt. + */ +#include <dm/platdata.h> /* For platform data support - non dt world */ + +/** + * enum rproc_mem_type - What type of memory model does the rproc use + * @RPROC_INTERNAL_MEMORY_MAPPED: Remote processor uses own memory and is memory + * mapped to the host processor over an address range. + * + * Please note that this is an enumeration of memory model of different types + * of remote processors. Few of the remote processors do have own internal + * memories, while others use external memory for instruction and data. + */ +enum rproc_mem_type { + RPROC_INTERNAL_MEMORY_MAPPED = 0, +}; + +/** + * struct dm_rproc_uclass_pdata - platform data for a CPU + * @name: Platform-specific way of naming the Remote proc + * @mem_type: one of 'enum rproc_mem_type' + * @driver_plat_data: driver specific platform data that may be needed. + * + * This can be accessed with dev_get_uclass_platdata() for any UCLASS_REMOTEPROC + * device. + * + */ +struct dm_rproc_uclass_pdata { + const char *name; + enum rproc_mem_type mem_type; + void *driver_plat_data; +}; + +/** + * struct dm_rproc_ops - Operations that are provided by remote proc driver + * @init: Initialize the remoteproc device invoked after probe (optional) + * Return 0 on success, -ve error on fail + * @load: Load the remoteproc device using data provided(mandatory) + * This takes the following additional arguments. + * addr- Address of the binary image to be loaded + * size- Size of the binary image to be loaded + * Return 0 on success, -ve error on fail + * @start: Start the remoteproc device (mandatory) + * Return 0 on success, -ve error on fail + * @stop: Stop the remoteproc device (optional) + * Return 0 on success, -ve error on fail + * @reset: Reset the remote proc device (optional) + * Return 0 on success, -ve error on fail + * @is_running: Check if the remote processor is running(optional) + * Return 0 on success, 1 if not running, -ve on others errors + * @ping: Ping the remote device for basic communication check(optional) + * Return 0 on success, 1 if not responding, -ve on other errors + */ +struct dm_rproc_ops { + int (*init)(struct udevice *dev); + int (*load)(struct udevice *dev, ulong addr, ulong size); + int (*start)(struct udevice *dev); + int (*stop)(struct udevice *dev); + int (*reset)(struct udevice *dev); + int (*is_running)(struct udevice *dev); + int (*ping)(struct udevice *dev); +}; + +/* Accessor */ +#define rproc_get_ops(dev) ((struct dm_rproc_ops *)(dev)->driver->ops) + +#ifdef CONFIG_REMOTEPROC +/** + * rproc_init() - Initialize all bound remote proc devices + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_init(void); + +/** + * rproc_is_initialized() - check to see if remoteproc devices are initialized + * + * Return: 0 if all devices are initialized, else appropriate error value. + */ +bool rproc_is_initialized(void); + +/** + * rproc_load() - load binary to a remote processor + * @id: id of the remote processor + * @addr: address in memory where the binary image is located + * @size: size of the binary image + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_load(int id, ulong addr, ulong size); + +/** + * rproc_start() - Start a remote processor + * @id: id of the remote processor + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_start(int id); + +/** + * rproc_stop() - Stop a remote processor + * @id: id of the remote processor + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_stop(int id); + +/** + * rproc_reset() - reset a remote processor + * @id: id of the remote processor + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_reset(int id); + +/** + * rproc_ping() - ping a remote processor to check if it can communicate + * @id: id of the remote processor + * + * NOTE: this might need communication path available, which is not implemented + * as part of remoteproc framework - hook on to appropriate bus architecture to + * do the same + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_ping(int id); + +/** + * rproc_is_running() - check to see if remote processor is running + * @id: id of the remote processor + * + * NOTE: this may not involve actual communication capability of the remote + * processor, but just ensures that it is out of reset and executing code. + * + * Return: 0 if all ok, else appropriate error value. + */ +int rproc_is_running(int id); +#else +static inline int rproc_init(void) { return -ENOSYS; } +static inline bool rproc_is_initialized(void) { return false; } +static inline int rproc_load(int id, ulong addr, ulong size) { return -ENOSYS; } +static inline int rproc_start(int id) { return -ENOSYS; } +static inline int rproc_stop(int id) { return -ENOSYS; } +static inline int rproc_reset(int id) { return -ENOSYS; } +static inline int rproc_ping(int id) { return -ENOSYS; } +static inline int rproc_is_running(int id) { return -ENOSYS; } +#endif + +#endif /* _RPROC_H_ */ |