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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common platform interfaces for mobile TPU chips.
*
* Copyright (C) 2021 Google, Inc.
*/
#ifndef __EDGETPU_MOBILE_PLATFORM_H__
#define __EDGETPU_MOBILE_PLATFORM_H__
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <soc/google/exynos_pm_qos.h>
#if IS_ENABLED(CONFIG_GOOGLE_BCL)
#include <soc/google/bcl.h>
#endif
#include "edgetpu-config.h"
#include "edgetpu-internal.h"
#define to_mobile_dev(etdev) container_of(etdev, struct edgetpu_mobile_platform_dev, edgetpu_dev)
struct edgetpu_mobile_platform_pwr {
struct dentry *debugfs_dir;
struct mutex policy_lock;
enum edgetpu_pwr_state curr_policy;
struct mutex state_lock;
u64 min_state;
u64 requested_state;
/* INT/MIF requests for memory bandwidth */
struct exynos_pm_qos_request int_min;
struct exynos_pm_qos_request mif_min;
/* BTS */
unsigned int performance_scenario;
int scenario_count;
struct mutex scenario_lock;
/* LPM callbacks, NULL for chips without LPM */
int (*lpm_up)(struct edgetpu_dev *etdev);
void (*lpm_down)(struct edgetpu_dev *etdev);
/* Block shutdown callback, may be NULL */
void (*block_down)(struct edgetpu_dev *etdev);
/* Firmware shutdown callback. Must be implemented */
void (*firmware_down)(struct edgetpu_dev *etdev);
/* Chip-specific setup after the PM interface is created */
int (*after_create)(struct edgetpu_dev *etdev);
/* Chip-specific cleanup before the PM interface is destroyed */
int (*before_destroy)(struct edgetpu_dev *etdev);
/* ACPM set rate callback. Must be implemented */
int (*acpm_set_rate)(unsigned int id, unsigned long rate);
};
struct edgetpu_mobile_platform_dev {
/* Generic edgetpu device */
struct edgetpu_dev edgetpu_dev;
/* Common mobile platform power interface */
struct edgetpu_mobile_platform_pwr platform_pwr;
/* Physical address of the firmware image */
phys_addr_t fw_region_paddr;
/* Size of the firmware region */
size_t fw_region_size;
/* Virtual address of the memory region shared with firmware */
void *shared_mem_vaddr;
/* Physical address of the memory region shared with firmware */
phys_addr_t shared_mem_paddr;
/* Size of the shared memory region size */
size_t shared_mem_size;
/* Physical address of the firmware context region */
phys_addr_t fw_ctx_paddr;
/* Size of the firmware context region */
size_t fw_ctx_size;
/*
* Pointer to GSA device for firmware authentication.
* May be NULL if the chip does not support firmware authentication
*/
struct device *gsa_dev;
/* Virtual address of the SSMT block for this chip. */
void __iomem *ssmt_base;
/* Coherent log buffer */
struct edgetpu_coherent_mem *log_mem;
/* Coherent trace buffer */
struct edgetpu_coherent_mem *trace_mem;
#if IS_ENABLED(CONFIG_GOOGLE_BCL)
struct bcl_device *bcl_dev;
#endif
/* Protects TZ Mailbox client pointer */
struct mutex tz_mailbox_lock;
/* TZ mailbox client */
struct edgetpu_client *secure_client;
/* Length of @irq */
int n_irq;
/* Array of IRQ numbers */
int *irq;
/* callbacks for chip-dependent implementations */
/*
* Called when common device probing procedure is done.
*
* Return a non-zero value can fail the probe procedure.
*
* This callback is optional.
*/
int (*after_probe)(struct edgetpu_mobile_platform_dev *etmdev);
/*
* Called before common device removal procedure.
*
* This callback is optional.
*/
void (*before_remove)(struct edgetpu_mobile_platform_dev *etmdev);
};
#endif /* __EDGETPU_MOBILE_PLATFORM_H__ */
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