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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
366 lines
12 KiB
C
366 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2015
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* Texas Instruments Incorporated - http://www.ti.com/
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*/
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#ifndef _RPROC_H_
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#define _RPROC_H_
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/*
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* Note: The platform data support is not meant for use with newer
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* platforms. This is meant only for legacy devices. This mode of
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* initialization *will* be eventually removed once all necessary
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* platforms have moved to dm/fdt.
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*/
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#include <dm/platdata.h> /* For platform data support - non dt world */
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/**
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* enum rproc_mem_type - What type of memory model does the rproc use
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* @RPROC_INTERNAL_MEMORY_MAPPED: Remote processor uses own memory and is memory
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* mapped to the host processor over an address range.
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*
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* Please note that this is an enumeration of memory model of different types
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* of remote processors. Few of the remote processors do have own internal
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* memories, while others use external memory for instruction and data.
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*/
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enum rproc_mem_type {
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RPROC_INTERNAL_MEMORY_MAPPED = 0,
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};
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/**
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* struct dm_rproc_uclass_pdata - platform data for a CPU
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* @name: Platform-specific way of naming the Remote proc
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* @mem_type: one of 'enum rproc_mem_type'
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* @driver_plat_data: driver specific platform data that may be needed.
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*
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* This can be accessed with dev_get_uclass_plat() for any UCLASS_REMOTEPROC
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* device.
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*
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*/
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struct dm_rproc_uclass_pdata {
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const char *name;
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enum rproc_mem_type mem_type;
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void *driver_plat_data;
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};
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/**
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* struct dm_rproc_ops - Driver model remote proc operations.
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*
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* This defines the operations provided by remote proc driver.
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*/
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struct dm_rproc_ops {
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/**
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* init() - Initialize the remoteproc device (optional)
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*
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* This is called after the probe is completed allowing the remote
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* processor drivers to split up the initializations between probe and
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* init if needed.
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*
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* @dev: Remote proc device
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* @return 0 if all ok, else appropriate error value.
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*/
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int (*init)(struct udevice *dev);
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/**
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* load() - Load the remoteproc device using data provided (mandatory)
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*
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* Load the remoteproc device with an image, do not start the device.
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*
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* @dev: Remote proc device
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* @addr: Address of the image to be loaded
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* @size: Size of the image to be loaded
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* @return 0 if all ok, else appropriate error value.
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*/
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int (*load)(struct udevice *dev, ulong addr, ulong size);
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/**
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* start() - Start the remoteproc device (mandatory)
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*
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* @dev: Remote proc device
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* @return 0 if all ok, else appropriate error value.
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*/
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int (*start)(struct udevice *dev);
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/**
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* stop() - Stop the remoteproc device (optional)
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*
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* @dev: Remote proc device
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* @return 0 if all ok, else appropriate error value.
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*/
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int (*stop)(struct udevice *dev);
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/**
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* reset() - Reset the remoteproc device (optional)
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*
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* @dev: Remote proc device
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* @return 0 if all ok, else appropriate error value.
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*/
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int (*reset)(struct udevice *dev);
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/**
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* is_running() - Check if the remote processor is running (optional)
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*
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* @dev: Remote proc device
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* @return 0 if running, 1 if not running, -ve on error.
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*/
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int (*is_running)(struct udevice *dev);
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/**
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* ping() - Ping the remote device for basic communication (optional)
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*
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* @dev: Remote proc device
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* @return 0 on success, 1 if not responding, -ve on other errors.
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*/
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int (*ping)(struct udevice *dev);
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/**
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* device_to_virt() - Return translated virtual address (optional)
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*
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* Translate a device address (remote processor view) to virtual
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* address (main processor view).
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*
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* @dev: Remote proc device
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* @da: Device address
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* @size: Size of the memory region @da is pointing to
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* @return virtual address.
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*/
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void * (*device_to_virt)(struct udevice *dev, ulong da, ulong size);
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};
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/* Accessor */
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#define rproc_get_ops(dev) ((struct dm_rproc_ops *)(dev)->driver->ops)
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#if CONFIG_IS_ENABLED(REMOTEPROC)
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/**
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* rproc_init() - Initialize all bound remote proc devices
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_init(void);
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/**
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* rproc_dev_init() - Initialize a remote proc device based on id
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* @id: id of the remote processor
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_dev_init(int id);
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/**
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* rproc_is_initialized() - check to see if remoteproc devices are initialized
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* Return: true if all devices are initialized, false otherwise.
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*/
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bool rproc_is_initialized(void);
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/**
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* rproc_load() - load binary or elf to a remote processor
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* @id: id of the remote processor
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* @addr: address in memory where the image is located
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* @size: size of the image
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_load(int id, ulong addr, ulong size);
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/**
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* rproc_start() - Start a remote processor
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* @id: id of the remote processor
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_start(int id);
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/**
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* rproc_stop() - Stop a remote processor
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* @id: id of the remote processor
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_stop(int id);
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/**
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* rproc_reset() - reset a remote processor
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* @id: id of the remote processor
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* Return: 0 if all ok, else appropriate error value.
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*/
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int rproc_reset(int id);
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/**
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* rproc_ping() - ping a remote processor to check if it can communicate
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* @id: id of the remote processor
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* Return: 0 if all ok, else appropriate error value.
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*
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* NOTE: this might need communication path available, which is not implemented
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* as part of remoteproc framework - hook on to appropriate bus architecture to
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* do the same
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*/
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int rproc_ping(int id);
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/**
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* rproc_is_running() - check to see if remote processor is running
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* @id: id of the remote processor
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* Return: 0 if running, 1 if not running, -ve on error.
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*
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* NOTE: this may not involve actual communication capability of the remote
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* processor, but just ensures that it is out of reset and executing code.
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*/
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int rproc_is_running(int id);
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/**
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* rproc_elf32_sanity_check() - Verify if an image is a valid ELF32 one
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*
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* Check if a valid ELF32 image exists at the given memory location. Verify
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* basic ELF32 format requirements like magic number and sections size.
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*
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* @addr: address of the image to verify
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* @size: size of the image
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* Return: 0 if the image looks good, else appropriate error value.
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*/
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int rproc_elf32_sanity_check(ulong addr, ulong size);
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/**
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* rproc_elf64_sanity_check() - Verify if an image is a valid ELF32 one
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*
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* Check if a valid ELF64 image exists at the given memory location. Verify
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* basic ELF64 format requirements like magic number and sections size.
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*
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* @addr: address of the image to verify
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* @size: size of the image
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* Return: 0 if the image looks good, else appropriate error value.
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*/
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int rproc_elf64_sanity_check(ulong addr, ulong size);
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/**
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* rproc_elf32_load_image() - load an ELF32 image
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* @dev: device loading the ELF32 image
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* @addr: valid ELF32 image address
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* @size: size of the image
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* Return: 0 if the image is successfully loaded, else appropriate error value.
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*/
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int rproc_elf32_load_image(struct udevice *dev, unsigned long addr, ulong size);
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/**
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* rproc_elf64_load_image() - load an ELF64 image
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* @dev: device loading the ELF64 image
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* @addr: valid ELF64 image address
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* @size: size of the image
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* Return: 0 if the image is successfully loaded, else appropriate error value.
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*/
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int rproc_elf64_load_image(struct udevice *dev, ulong addr, ulong size);
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/**
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* rproc_elf_load_image() - load an ELF image
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* @dev: device loading the ELF image
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* @addr: valid ELF image address
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* @size: size of the image
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*
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* Auto detects if the image is ELF32 or ELF64 image and load accordingly.
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* Return: 0 if the image is successfully loaded, else appropriate error value.
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*/
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int rproc_elf_load_image(struct udevice *dev, unsigned long addr, ulong size);
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/**
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* rproc_elf_get_boot_addr() - Get rproc's boot address.
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* @dev: device loading the ELF image
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* @addr: valid ELF image address
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*
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* This function returns the entry point address of the ELF
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* image.
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*/
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ulong rproc_elf_get_boot_addr(struct udevice *dev, ulong addr);
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/**
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* rproc_elf32_load_rsc_table() - load the resource table from an ELF32 image
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*
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* Search for the resource table in an ELF32 image, and if found, copy it to
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* device memory.
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*
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* @dev: device loading the resource table
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* @fw_addr: ELF image address
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* @fw_size: size of the ELF image
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* @rsc_addr: pointer to the found resource table address. Updated on
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* operation success
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* @rsc_size: pointer to the found resource table size. Updated on operation
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* success
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*
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* Return: 0 if a valid resource table is successfully loaded, -ENODATA if there
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* is no resource table (which is optional), or another appropriate error value.
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*/
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int rproc_elf32_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr, ulong *rsc_size);
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/**
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* rproc_elf64_load_rsc_table() - load the resource table from an ELF64 image
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*
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* Search for the resource table in an ELF64 image, and if found, copy it to
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* device memory.
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*
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* @dev: device loading the resource table
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* @fw_addr: ELF image address
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* @fw_size: size of the ELF image
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* @rsc_addr: pointer to the found resource table address. Updated on
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* operation success
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* @rsc_size: pointer to the found resource table size. Updated on operation
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* success
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*
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* Return: 0 if a valid resource table is successfully loaded, -ENODATA if there
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* is no resource table (which is optional), or another appropriate error value.
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*/
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int rproc_elf64_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr, ulong *rsc_size);
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/**
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* rproc_elf_load_rsc_table() - load the resource table from an ELF image
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*
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* Auto detects if the image is ELF32 or ELF64 image and search accordingly for
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* the resource table, and if found, copy it to device memory.
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*
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* @dev: device loading the resource table
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* @fw_addr: ELF image address
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* @fw_size: size of the ELF image
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* @rsc_addr: pointer to the found resource table address. Updated on
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* operation success
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* @rsc_size: pointer to the found resource table size. Updated on operation
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* success
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*
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* Return: 0 if a valid resource table is successfully loaded, -ENODATA if there
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* is no resource table (which is optional), or another appropriate error value.
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*/
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int rproc_elf_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr, ulong *rsc_size);
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#else
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static inline int rproc_init(void) { return -ENOSYS; }
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static inline int rproc_dev_init(int id) { return -ENOSYS; }
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static inline bool rproc_is_initialized(void) { return false; }
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static inline int rproc_load(int id, ulong addr, ulong size) { return -ENOSYS; }
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static inline int rproc_start(int id) { return -ENOSYS; }
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static inline int rproc_stop(int id) { return -ENOSYS; }
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static inline int rproc_reset(int id) { return -ENOSYS; }
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static inline int rproc_ping(int id) { return -ENOSYS; }
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static inline int rproc_is_running(int id) { return -ENOSYS; }
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static inline int rproc_elf32_sanity_check(ulong addr,
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ulong size) { return -ENOSYS; }
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static inline int rproc_elf64_sanity_check(ulong addr,
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ulong size) { return -ENOSYS; }
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static inline int rproc_elf_sanity_check(ulong addr,
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ulong size) { return -ENOSYS; }
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static inline int rproc_elf32_load_image(struct udevice *dev,
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unsigned long addr, ulong size)
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{ return -ENOSYS; }
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static inline int rproc_elf64_load_image(struct udevice *dev, ulong addr,
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ulong size)
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{ return -ENOSYS; }
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static inline int rproc_elf_load_image(struct udevice *dev, ulong addr,
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ulong size)
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{ return -ENOSYS; }
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static inline ulong rproc_elf_get_boot_addr(struct udevice *dev, ulong addr)
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{ return 0; }
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static inline int rproc_elf32_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr,
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ulong *rsc_size)
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{ return -ENOSYS; }
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static inline int rproc_elf64_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr,
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ulong *rsc_size)
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{ return -ENOSYS; }
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static inline int rproc_elf_load_rsc_table(struct udevice *dev, ulong fw_addr,
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ulong fw_size, ulong *rsc_addr,
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ulong *rsc_size)
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{ return -ENOSYS; }
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#endif
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#endif /* _RPROC_H_ */
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