mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-12 12:46:07 +00:00
4344e27c26
Update reserved function names starting with one underscore, replacing them as follows: '_k_' with 'z_' '_K_' with 'Z_' '_handler_' with 'z_handl_' '_Cstart' with 'z_cstart' '_Swap' with 'z_swap' This renaming is done on both global and those static function names in kernel/include and include/. Other static function names in kernel/ are renamed by removing the leading underscore. Other function names not starting with any prefix listed above are renamed starting with a 'z_' or 'Z_' prefix. Function names starting with two or three leading underscores are not automatcally renamed since these names will collide with the variants with two or three leading underscores. Various generator scripts have also been updated as well as perf, linker and usb files. These are drivers/serial/uart_handlers.c include/linker/kobject-text.ld kernel/include/syscall_handler.h scripts/gen_kobject_list.py scripts/gen_syscall_header.py Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/*
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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 <i2c.h>
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#include <string.h>
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#include <syscall_handler.h>
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Z_SYSCALL_HANDLER(i2c_configure, dev, dev_config)
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{
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Z_OOPS(Z_SYSCALL_DRIVER_I2C(dev, configure));
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return z_impl_i2c_configure((struct device *)dev, dev_config);
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}
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static u32_t copy_msgs_and_transfer(struct device *dev,
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const struct i2c_msg *msgs,
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u8_t num_msgs,
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u16_t addr,
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void *ssf)
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{
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struct i2c_msg copy[num_msgs];
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u8_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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Z_OOPS(Z_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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Z_SYSCALL_HANDLER(i2c_transfer, dev, msgs, num_msgs, addr)
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{
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Z_OOPS(Z_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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Z_OOPS(Z_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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Z_OOPS(Z_SYSCALL_MEMORY_ARRAY_READ(msgs, num_msgs,
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sizeof(struct i2c_msg)));
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return copy_msgs_and_transfer((struct device *)dev,
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(struct i2c_msg *)msgs,
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(u8_t)num_msgs, (u16_t)addr,
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ssf);
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}
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Z_SYSCALL_HANDLER1_SIMPLE(i2c_slave_driver_register, K_OBJ_DRIVER_I2C,
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struct device *);
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Z_SYSCALL_HANDLER1_SIMPLE(i2c_slave_driver_unregister, K_OBJ_DRIVER_I2C,
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struct device *);
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