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_H 7#define __SOC_TEGRA_BPMP_H 8 9#include <linux/mailbox_client.h> 10#include <linux/pm_domain.h> 11#include <linux/reset-controller.h> 12#include <linux/semaphore.h> 13#include <linux/types.h> 14 15#include <soc/tegra/bpmp-abi.h> 16 17struct tegra_bpmp_clk; 18struct tegra_bpmp_ops; 19 20struct tegra_bpmp_soc { 21 struct { 22 struct { 23 unsigned int offset; 24 unsigned int count; 25 unsigned int timeout; 26 } cpu_tx, thread, cpu_rx; 27 } channels; 28 29 const struct tegra_bpmp_ops *ops; 30 unsigned int num_resets; 31}; 32 33struct tegra_bpmp_mb_data { 34 u32 code; 35 u32 flags; 36 u8 data[MSG_DATA_MIN_SZ]; 37} __packed; 38 39struct tegra_bpmp_channel { 40 struct tegra_bpmp *bpmp; 41 struct tegra_bpmp_mb_data *ib; 42 struct tegra_bpmp_mb_data *ob; 43 struct completion completion; 44 struct tegra_ivc *ivc; 45 unsigned int index; 46}; 47 48typedef void (*tegra_bpmp_mrq_handler_t)(unsigned int mrq, 49 struct tegra_bpmp_channel *channel, 50 void *data); 51 52struct tegra_bpmp_mrq { 53 struct list_head list; 54 unsigned int mrq; 55 tegra_bpmp_mrq_handler_t handler; 56 void *data; 57}; 58 59struct tegra_bpmp { 60 const struct tegra_bpmp_soc *soc; 61 struct device *dev; 62 void *priv; 63 64 struct { 65 struct mbox_client client; 66 struct mbox_chan *channel; 67 } mbox; 68 69 spinlock_t atomic_tx_lock; 70 struct tegra_bpmp_channel *tx_channel, *rx_channel, *threaded_channels; 71 72 struct { 73 unsigned long *allocated; 74 unsigned long *busy; 75 unsigned int count; 76 struct semaphore lock; 77 } threaded; 78 79 struct list_head mrqs; 80 spinlock_t lock; 81 82 struct tegra_bpmp_clk **clocks; 83 unsigned int num_clocks; 84 85 struct reset_controller_dev rstc; 86 87 struct genpd_onecell_data genpd; 88 89#ifdef CONFIG_DEBUG_FS 90 struct dentry *debugfs_mirror; 91#endif 92}; 93 94struct tegra_bpmp_message { 95 unsigned int mrq; 96 97 struct { 98 const void *data; 99 size_t size; 100 } tx; 101 102 struct { 103 void *data; 104 size_t size; 105 int ret; 106 } rx; 107}; 108 109#if IS_ENABLED(CONFIG_TEGRA_BPMP) 110struct tegra_bpmp *tegra_bpmp_get(struct device *dev); 111void tegra_bpmp_put(struct tegra_bpmp *bpmp); 112int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, 113 struct tegra_bpmp_message *msg); 114int tegra_bpmp_transfer(struct tegra_bpmp *bpmp, 115 struct tegra_bpmp_message *msg); 116void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code, 117 const void *data, size_t size); 118 119int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, 120 tegra_bpmp_mrq_handler_t handler, void *data); 121void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, 122 void *data); 123bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq); 124#else 125static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev) 126{ 127 return ERR_PTR(-ENOTSUPP); 128} 129static inline void tegra_bpmp_put(struct tegra_bpmp *bpmp) 130{ 131} 132static inline int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, 133 struct tegra_bpmp_message *msg) 134{ 135 return -ENOTSUPP; 136} 137static inline int tegra_bpmp_transfer(struct tegra_bpmp *bpmp, 138 struct tegra_bpmp_message *msg) 139{ 140 return -ENOTSUPP; 141} 142static inline void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, 143 int code, const void *data, 144 size_t size) 145{ 146} 147 148static inline int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, 149 unsigned int mrq, 150 tegra_bpmp_mrq_handler_t handler, 151 void *data) 152{ 153 return -ENOTSUPP; 154} 155static inline void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, 156 unsigned int mrq, void *data) 157{ 158} 159 160static inline bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, 161 unsigned int mrq) 162{ 163 return false; 164} 165#endif 166 167void tegra_bpmp_handle_rx(struct tegra_bpmp *bpmp); 168 169#if IS_ENABLED(CONFIG_CLK_TEGRA_BPMP) 170int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp); 171#else 172static inline int tegra_bpmp_init_clocks(struct tegra_bpmp *bpmp) 173{ 174 return 0; 175} 176#endif 177 178#if IS_ENABLED(CONFIG_RESET_TEGRA_BPMP) 179int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp); 180#else 181static inline int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp) 182{ 183 return 0; 184} 185#endif 186 187#if IS_ENABLED(CONFIG_SOC_TEGRA_POWERGATE_BPMP) 188int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp); 189#else 190static inline int tegra_bpmp_init_powergates(struct tegra_bpmp *bpmp) 191{ 192 return 0; 193} 194#endif 195 196#if IS_ENABLED(CONFIG_DEBUG_FS) 197int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp); 198#else 199static inline int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp) 200{ 201 return 0; 202} 203#endif 204 205 206#endif /* __SOC_TEGRA_BPMP_H */ 207