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/*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef __SOC_TEGRA_BPMP_H
#define __SOC_TEGRA_BPMP_H
#include <linux/mailbox_client.h>
#include <linux/pm_domain.h>
#include <linux/reset-controller.h>
#include <linux/semaphore.h>
#include <linux/types.h>
#include <soc/tegra/bpmp-abi.h>
struct tegra_bpmp_clk;
struct tegra_bpmp_ops;
struct tegra_bpmp_soc {
struct {
struct {
unsigned int offset;
unsigned int count;
unsigned int timeout;
} cpu_tx, thread, cpu_rx;
} channels;
const struct tegra_bpmp_ops *ops;
unsigned int num_resets;
};
struct tegra_bpmp_mb_data {
u32 code;
u32 flags;
u8 data[MSG_DATA_MIN_SZ];
} __packed;
struct tegra_bpmp_channel {
struct tegra_bpmp *bpmp;
struct tegra_bpmp_mb_data *ib;
struct tegra_bpmp_mb_data *ob;
struct completion completion;
struct tegra_ivc *ivc;
};
typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq,
struct tegra_bpmp_channel *channel,
void *data);
struct tegra_bpmp_mrq {
struct list_head list;
unsigned int mrq;
tegra_bpmp_mrq_handler_t handler;
void *data;
};
struct tegra_bpmp {
const struct tegra_bpmp_soc *soc;
struct device *dev;
void *priv;
struct {
struct mbox_client client;
struct mbox_chan *channel;
} mbox;
spinlock_t atomic_tx_lock;
struct tegra_bpmp_channel *tx_channel, *rx_channel, *threaded_channels;
struct {
unsigned long *allocated;
unsigned long *busy;
unsigned int count;
struct semaphore lock;
} threaded;
struct list_head mrqs;
spinlock_t lock;
struct tegra_bpmp_clk **clocks;
unsigned int num_clocks;
struct reset_controller_dev rstc;
struct genpd_onecell_data genpd;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_mirror;
#endif
};
struct tegra_bpmp_message {
unsigned int mrq;
struct {
const void *data;
size_t size;
} tx;
struct {
void *data;
size_t size;
int ret;
} rx;
};
#if IS_ENABLED(CONFIG_TEGRA_BPMP)
struct tegra_bpmp *tegra_bpmp_get(struct device *dev);
void tegra_bpmp_put(struct tegra_bpmp *bpmp);
int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
struct tegra_bpmp_message *msg);
int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
struct tegra_bpmp_message *msg);
void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,
const void *data, size_t size);
int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
tegra_bpmp_mrq_handler_t handler, void *data);
void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
void *data);
bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq);
#else
static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev)
{
return ERR_PTR(-ENOTSUPP);
}
static inline void tegra_bpmp_put(struct tegra_bpmp *bpmp)
{
}
static inline int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
struct tegra_bpmp_message *msg)
{
return -ENOTSUPP;
}
static inline int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
struct tegra_bpmp_message *msg)
{
return -ENOTSUPP;
}
static inline void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel,
int code, const void *data,
size_t size)
{
}
static inline int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp,
unsigned int mrq,
tegra_bpmp_mrq_handler_t handler,
void *data)
{
return -ENOTSUPP;
}
static inline void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp,
unsigned int mrq, void *data)
{
}
static inline bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp,
unsigned int mrq)
{
return false;
}
#endif
void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp);
#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP)
int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp)
{
return 0;
}
#endif
#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP)
int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
{
return 0;
}
#endif
#if IS_ENABLED(CONFIG_SOC_TEGRA_POWERGATE_BPMP)
int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp)
{
return 0;
}
#endif
#if IS_ENABLED(CONFIG_DEBUG_FS)
int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp);
#else
static inline int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp)
{
return 0;
}
#endif
#endif /* __SOC_TEGRA_BPMP_H */
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