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