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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.4 */5 6#ifndef __SOC_TEGRA_BPMP_H7#define __SOC_TEGRA_BPMP_H8 9#include <linux/iosys-map.h>10#include <linux/mailbox_client.h>11#include <linux/pm_domain.h>12#include <linux/reset-controller.h>13#include <linux/semaphore.h>14#include <linux/types.h>15 16#include <soc/tegra/bpmp-abi.h>17 18struct tegra_bpmp_clk;19struct tegra_bpmp_ops;20 21struct tegra_bpmp_soc {22 struct {23 struct {24 unsigned int offset;25 unsigned int count;26 unsigned int timeout;27 } cpu_tx, thread, cpu_rx;28 } channels;29 30 const struct tegra_bpmp_ops *ops;31 unsigned int num_resets;32};33 34struct tegra_bpmp_mb_data {35 u32 code;36 u32 flags;37 u8 data[MSG_DATA_MIN_SZ];38} __packed;39 40#define tegra_bpmp_mb_read(dst, mb, size) \41 iosys_map_memcpy_from(dst, mb, offsetof(struct tegra_bpmp_mb_data, data), size)42 43#define tegra_bpmp_mb_write(mb, src, size) \44 iosys_map_memcpy_to(mb, offsetof(struct tegra_bpmp_mb_data, data), src, size)45 46#define tegra_bpmp_mb_read_field(mb, field) \47 iosys_map_rd_field(mb, 0, struct tegra_bpmp_mb_data, field)48 49#define tegra_bpmp_mb_write_field(mb, field, value) \50 iosys_map_wr_field(mb, 0, struct tegra_bpmp_mb_data, field, value)51 52struct tegra_bpmp_channel {53 struct tegra_bpmp *bpmp;54 struct iosys_map ib;55 struct iosys_map ob;56 struct completion completion;57 struct tegra_ivc *ivc;58 unsigned int index;59};60 61typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq,62 struct tegra_bpmp_channel *channel,63 void *data);64 65struct tegra_bpmp_mrq {66 struct list_head list;67 unsigned int mrq;68 tegra_bpmp_mrq_handler_t handler;69 void *data;70};71 72struct tegra_bpmp {73 const struct tegra_bpmp_soc *soc;74 struct device *dev;75 void *priv;76 77 struct {78 struct mbox_client client;79 struct mbox_chan *channel;80 } mbox;81 82 spinlock_t atomic_tx_lock;83 struct tegra_bpmp_channel *tx_channel, *rx_channel, *threaded_channels;84 85 struct {86 unsigned long *allocated;87 unsigned long *busy;88 unsigned int count;89 struct semaphore lock;90 } threaded;91 92 struct list_head mrqs;93 spinlock_t lock;94 95 struct tegra_bpmp_clk **clocks;96 unsigned int num_clocks;97 98 struct reset_controller_dev rstc;99 100 struct genpd_onecell_data genpd;101 102#ifdef CONFIG_DEBUG_FS103 struct dentry *debugfs_mirror;104#endif105 106 bool suspended;107};108 109#define TEGRA_BPMP_MESSAGE_RESET BIT(0)110 111struct tegra_bpmp_message {112 unsigned int mrq;113 114 struct {115 const void *data;116 size_t size;117 } tx;118 119 struct {120 void *data;121 size_t size;122 int ret;123 } rx;124 125 unsigned long flags;126};127 128#if IS_ENABLED(CONFIG_TEGRA_BPMP)129struct tegra_bpmp *tegra_bpmp_get(struct device *dev);130void tegra_bpmp_put(struct tegra_bpmp *bpmp);131int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,132 struct tegra_bpmp_message *msg);133int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,134 struct tegra_bpmp_message *msg);135void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,136 const void *data, size_t size);137 138int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,139 tegra_bpmp_mrq_handler_t handler, void *data);140void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,141 void *data);142bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq);143#else144static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev)145{146 return ERR_PTR(-ENOTSUPP);147}148static inline void tegra_bpmp_put(struct tegra_bpmp *bpmp)149{150}151static inline int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,152 struct tegra_bpmp_message *msg)153{154 return -ENOTSUPP;155}156static inline int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,157 struct tegra_bpmp_message *msg)158{159 return -ENOTSUPP;160}161static inline void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel,162 int code, const void *data,163 size_t size)164{165}166 167static inline int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp,168 unsigned int mrq,169 tegra_bpmp_mrq_handler_t handler,170 void *data)171{172 return -ENOTSUPP;173}174static inline void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp,175 unsigned int mrq, void *data)176{177}178 179static inline bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp,180 unsigned int mrq)181{182 return false;183}184#endif185 186void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp);187 188#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP)189int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp);190#else191static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp)192{193 return 0;194}195#endif196 197#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP)198int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp);199#else200static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)201{202 return 0;203}204#endif205 206#if IS_ENABLED(CONFIG_SOC_TEGRA_POWERGATE_BPMP)207int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp);208#else209static inline int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp)210{211 return 0;212}213#endif214 215#if IS_ENABLED(CONFIG_DEBUG_FS)216int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp);217#else218static inline int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp)219{220 return 0;221}222#endif223 224 225#endif /* __SOC_TEGRA_BPMP_H */226