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/* SPDX-License-Identifier: GPL-2.0 */
/*
* GXP firmware data manager.
* A sub-module responsible for managing the resources/data regions shared
* between the GXP driver and FW.
*
* Copyright (C) 2021 Google LLC
*/
#ifndef __GXP_FIRMWARE_DATA_H__
#define __GXP_FIRMWARE_DATA_H__
#include "gxp-dma.h"
#include "gxp-internal.h"
/**
* gxp_fw_data_init() - Initializes the FW data manager submodule.
* @gxp: The parent GXP device
*
* Return:
* 0 - Successfully initialized submodule
* -ENOMEM - Insufficient memory to create the submodule
* -ENODEV - Failed to locate the shared driver-device region
* -Other - Error codes propagated from internal functions.
*/
int gxp_fw_data_init(struct gxp_dev *gxp);
/**
* gxp_fw_data_create_app() - Allocates HW and memory resources needed to create
* a GXP device application (1:1 with a GXP driver
* virtual device) used by the specified physical
* cores.
* @gxp: The parent GXP device
* @core_list: A bitmap of the physical cores used in this application
*
* Return:
* ptr - A pointer of the newly created application handle, an error pointer
* (PTR_ERR) otherwise.
* -ENOMEM - Insufficient memory to create the application
*/
void *gxp_fw_data_create_app(struct gxp_dev *gxp, uint core_list);
/**
* gxp_fw_data_destroy_app() - Deallocates the HW and memory resources used by
* the specified application.
* @gxp: The parent GXP device
* @application: The handle to the application to deallocate
*/
void gxp_fw_data_destroy_app(struct gxp_dev *gxp, void *application);
/**
* gxp_fw_data_destroy() - Destroys the FW data manager submodule and free all
* its resources.
* @gxp: The parent GXP device
*/
void gxp_fw_data_destroy(struct gxp_dev *gxp);
/**
* gxp_fw_data_set_core_telemetry_descriptors() - Set new logging or tracing
* buffers for firmware to write
* to.
* @gxp: The GXP device to set buffer descriptors for
* @type: Either `GXP_TELEMETRY_TYPE_LOGGING` or `GXP_TELEMETRY_TYPE_TRACING`
* @host_status: Bitfield describing the host's core telemetry status. See the
* bit definitions in gxp-host-device-structs.h.
* @buffers: An array of coherent buffers for logging and tracing
* @per_buffer_size: The size of each core's logging or tracing buffer in bytes
*
* `gxp_fw_data_init()` must have been called before this function.
*
* Caller must hold gxp->core_telemetry_mgr's lock.
*
* Return:
* 0 - Success
* -EINVAL - Invalid @type provided or @buffer_addrs are not addressable by @gxp
*/
int gxp_fw_data_set_core_telemetry_descriptors(struct gxp_dev *gxp, u8 type,
u32 host_status,
struct gxp_coherent_buf *buffers,
u32 per_buffer_size);
/**
* gxp_fw_data_get_core_telemetry_device_status() - Returns a bitfield
* describing a core's
* telemetry status.
* @gxp: The GXP device to get core telemetry status for
* @core: The core in @gxp to get the core telemetry status for
* @type: Either `GXP_TELEMETRY_TYPE_LOGGING` or `GXP_TELEMETRY_TYPE_TRACING`
*
* Caller must hold gxp->core_telemetry_mgr's lock.
*
* Return: The bitfield describing @core's telemetry status. If @core or @type
* are invalid, the result will always be 0.
*/
u32 gxp_fw_data_get_core_telemetry_device_status(struct gxp_dev *gxp, uint core,
u8 type);
#endif /* __GXP_FIRMWARE_DATA_H__ */
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