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https://github.com/zephyrproject-rtos/zephyr
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e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/* ipm_console.c - Console messages to/from another processor */
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/*
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* Copyright (c) 2015 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_DRIVERS_CONSOLE_IPM_CONSOLE_H_
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#define ZEPHYR_INCLUDE_DRIVERS_CONSOLE_IPM_CONSOLE_H_
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#include <kernel.h>
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#include <device.h>
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#include <sys/ring_buffer.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define IPM_CONSOLE_STDOUT (BIT(0))
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#define IPM_CONSOLE_PRINTK (BIT(1))
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/*
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* Good way to determine these numbers other than trial-and-error?
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* using printf() in the thread seems to require a lot more stack space
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*/
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#define IPM_CONSOLE_STACK_SIZE CONFIG_IPM_CONSOLE_STACK_SIZE
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#define IPM_CONSOLE_PRI 2
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struct ipm_console_receiver_config_info {
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/** Name of the low-level IPM driver to bind to */
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char *bind_to;
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/**
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* Stack for the receiver's thread, which prints out messages as
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* they come in. Should be sized CONFIG_IPM_CONSOLE_STACK_SIZE
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*/
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k_thread_stack_t *thread_stack;
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/**
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* Ring buffer data area for stashing characters from the interrupt
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* callback
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*/
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uint32_t *ring_buf_data;
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/** Size of ring_buf_data in 32-bit chunks */
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unsigned int rb_size32;
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/**
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* Line buffer for incoming messages, characters accumulate here
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* and then are sent to printk() once full (including a trailing NULL)
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* or a carriage return seen
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*/
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char *line_buf;
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/** Size in bytes of the line buffer. Must be at least 2 */
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unsigned int lb_size;
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/**
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* Destination for received console messages, one of
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* IPM_CONSOLE_STDOUT or IPM_CONSOLE_PRINTK
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*/
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unsigned int flags;
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};
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struct ipm_console_receiver_runtime_data {
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/** Buffer for received bytes from the low-level IPM device */
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struct ring_buf rb;
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/** Semaphore to wake up the thread to print out messages */
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struct k_sem sem;
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/** pointer to the bound low-level IPM device */
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const struct device *ipm_device;
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/** Indicator that the channel is temporarily disabled due to
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* full buffer
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*/
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int channel_disabled;
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/** Receiver worker thread */
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struct k_thread rx_thread;
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};
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struct ipm_console_sender_config_info {
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/** Name of the low-level driver to bind to */
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char *bind_to;
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/**
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* Source of messages to forward, hooks will be installed.
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* Can be IPM_CONSOLE_STDOUT, IPM_CONSOLE_PRINTK, or both
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*/
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int flags;
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};
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#if CONFIG_IPM_CONSOLE_RECEIVER
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int ipm_console_receiver_init(const struct device *d);
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#endif
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#if CONFIG_IPM_CONSOLE_SENDER
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int ipm_console_sender_init(const struct device *d);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_INCLUDE_DRIVERS_CONSOLE_IPM_CONSOLE_H_ */
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