88ca215eed
Updates the API and types to match updated I2C terminology. Replaces master with controller and slave with target. Updates all drivers to match the changed macros, types, and API signatures. Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2017 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <zephyr/drivers/i2c.h>
|
|
#include <string.h>
|
|
#include <zephyr/syscall_handler.h>
|
|
|
|
static inline int z_vrfy_i2c_configure(const struct device *dev,
|
|
uint32_t dev_config)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_DRIVER_I2C(dev, configure));
|
|
return z_impl_i2c_configure((const struct device *)dev, dev_config);
|
|
}
|
|
#include <syscalls/i2c_configure_mrsh.c>
|
|
|
|
static inline int z_vrfy_i2c_get_config(const struct device *dev,
|
|
uint32_t *dev_config)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_DRIVER_I2C(dev, get_config));
|
|
Z_OOPS(Z_SYSCALL_MEMORY_WRITE(dev_config, sizeof(uint32_t)));
|
|
|
|
return z_impl_i2c_get_config(dev, dev_config);
|
|
}
|
|
#include <syscalls/i2c_get_config_mrsh.c>
|
|
|
|
static uint32_t copy_msgs_and_transfer(const struct device *dev,
|
|
const struct i2c_msg *msgs,
|
|
uint8_t num_msgs,
|
|
uint16_t addr)
|
|
{
|
|
struct i2c_msg copy[num_msgs];
|
|
uint8_t i;
|
|
|
|
/* Use a local copy to avoid switcheroo attacks. */
|
|
memcpy(copy, msgs, num_msgs * sizeof(*msgs));
|
|
|
|
/* Validate the buffers in each message struct. Read options require
|
|
* that the target buffer be writable
|
|
*/
|
|
for (i = 0U; i < num_msgs; i++) {
|
|
Z_OOPS(Z_SYSCALL_MEMORY(copy[i].buf, copy[i].len,
|
|
copy[i].flags & I2C_MSG_READ));
|
|
}
|
|
|
|
return z_impl_i2c_transfer(dev, copy, num_msgs, addr);
|
|
}
|
|
|
|
static inline int z_vrfy_i2c_transfer(const struct device *dev,
|
|
struct i2c_msg *msgs, uint8_t num_msgs,
|
|
uint16_t addr)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
|
|
|
|
/* copy_msgs_and_transfer() will allocate a copy on the stack using
|
|
* VLA, so ensure this won't blow the stack. Most functions defined
|
|
* in i2c.h use only a handful of messages, so up to 32 messages
|
|
* should be more than sufficient.
|
|
*/
|
|
Z_OOPS(Z_SYSCALL_VERIFY(num_msgs >= 1 && num_msgs < 32));
|
|
|
|
/* We need to be able to read the overall array of messages */
|
|
Z_OOPS(Z_SYSCALL_MEMORY_ARRAY_READ(msgs, num_msgs,
|
|
sizeof(struct i2c_msg)));
|
|
|
|
return copy_msgs_and_transfer((const struct device *)dev,
|
|
(struct i2c_msg *)msgs,
|
|
(uint8_t)num_msgs, (uint16_t)addr);
|
|
}
|
|
#include <syscalls/i2c_transfer_mrsh.c>
|
|
|
|
static inline int z_vrfy_i2c_target_driver_register(const struct device *dev)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
|
|
return z_impl_i2c_target_driver_register(dev);
|
|
}
|
|
#include <syscalls/i2c_target_driver_register_mrsh.c>
|
|
|
|
static inline int z_vrfy_i2c_target_driver_unregister(const struct device *dev)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
|
|
return z_impl_i2c_target_driver_unregister(dev);
|
|
}
|
|
#include <syscalls/i2c_target_driver_unregister_mrsh.c>
|
|
|
|
static inline int z_vrfy_i2c_recover_bus(const struct device *dev)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
|
|
return z_impl_i2c_recover_bus(dev);
|
|
}
|
|
#include <syscalls/i2c_recover_bus_mrsh.c>
|