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93 lines
2.8 KiB
93 lines
2.8 KiB
/* |
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* Copyright (c) 2017 Intel Corporation |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#include <zephyr/drivers/i2c.h> |
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#include <string.h> |
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#include <zephyr/internal/syscall_handler.h> |
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static inline int z_vrfy_i2c_configure(const struct device *dev, |
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uint32_t dev_config) |
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{ |
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K_OOPS(K_SYSCALL_DRIVER_I2C(dev, configure)); |
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return z_impl_i2c_configure((const struct device *)dev, dev_config); |
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} |
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#include <zephyr/syscalls/i2c_configure_mrsh.c> |
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static inline int z_vrfy_i2c_get_config(const struct device *dev, |
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uint32_t *dev_config) |
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{ |
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K_OOPS(K_SYSCALL_DRIVER_I2C(dev, get_config)); |
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K_OOPS(K_SYSCALL_MEMORY_WRITE(dev_config, sizeof(uint32_t))); |
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return z_impl_i2c_get_config(dev, dev_config); |
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} |
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#include <zephyr/syscalls/i2c_get_config_mrsh.c> |
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static uint32_t copy_msgs_and_transfer(const struct device *dev, |
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const struct i2c_msg *msgs, |
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uint8_t num_msgs, |
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uint16_t addr) |
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{ |
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struct i2c_msg copy[num_msgs]; |
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uint8_t i; |
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/* Use a local copy to avoid switcheroo attacks. */ |
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memcpy(copy, msgs, num_msgs * sizeof(*msgs)); |
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/* Validate the buffers in each message struct. Read options require |
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* that the target buffer be writable |
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*/ |
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for (i = 0U; i < num_msgs; i++) { |
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K_OOPS(K_SYSCALL_MEMORY(copy[i].buf, copy[i].len, |
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copy[i].flags & I2C_MSG_READ)); |
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} |
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return z_impl_i2c_transfer(dev, copy, num_msgs, addr); |
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} |
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static inline int z_vrfy_i2c_transfer(const struct device *dev, |
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struct i2c_msg *msgs, uint8_t num_msgs, |
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uint16_t addr) |
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{ |
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K_OOPS(K_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C)); |
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/* copy_msgs_and_transfer() will allocate a copy on the stack using |
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* VLA, so ensure this won't blow the stack. Most functions defined |
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* in i2c.h use only a handful of messages, so up to 32 messages |
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* should be more than sufficient. |
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*/ |
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K_OOPS(K_SYSCALL_VERIFY(num_msgs >= 1 && num_msgs < 32)); |
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/* We need to be able to read the overall array of messages */ |
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K_OOPS(K_SYSCALL_MEMORY_ARRAY_READ(msgs, num_msgs, |
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sizeof(struct i2c_msg))); |
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return copy_msgs_and_transfer((const struct device *)dev, |
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(struct i2c_msg *)msgs, |
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(uint8_t)num_msgs, (uint16_t)addr); |
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} |
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#include <zephyr/syscalls/i2c_transfer_mrsh.c> |
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static inline int z_vrfy_i2c_target_driver_register(const struct device *dev) |
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{ |
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K_OOPS(K_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C)); |
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return z_impl_i2c_target_driver_register(dev); |
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} |
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#include <zephyr/syscalls/i2c_target_driver_register_mrsh.c> |
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static inline int z_vrfy_i2c_target_driver_unregister(const struct device *dev) |
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{ |
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K_OOPS(K_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C)); |
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return z_impl_i2c_target_driver_unregister(dev); |
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} |
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#include <zephyr/syscalls/i2c_target_driver_unregister_mrsh.c> |
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static inline int z_vrfy_i2c_recover_bus(const struct device *dev) |
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{ |
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K_OOPS(K_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C)); |
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return z_impl_i2c_recover_bus(dev); |
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} |
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#include <zephyr/syscalls/i2c_recover_bus_mrsh.c>
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