f7fffae8aa
Change all the Intel and Wind River code license from BSD-3 to Apache 2. Change-Id: Id8be2c1c161a06ea8a0b9f38e17660e11dbb384b Signed-off-by: Javier B Perez Hernandez <javier.b.perez.hernandez@linux.intel.com> Signed-off-by: Anas Nashif <anas.nashif@intel.com> Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* ipi_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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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _IPI_CONSOLE_H_
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#define _IPI_CONSOLE_H_
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#include <nanokernel.h>
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#include <device.h>
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#include <misc/ring_buffer.h>
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#define IPI_CONSOLE_STDOUT (1 << 0)
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#define IPI_CONSOLE_PRINTK (1 << 1)
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/* Good way to determine these numbers other than trial-and-error?
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* using printf() in the fiber seems to require a lot more stack space */
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#define IPI_CONSOLE_STACK_SIZE 512
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#define IPI_CONSOLE_PRI 2
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struct ipi_console_receiver_config_info {
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/** Name of the low-level IPI driver to bind to */
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char *bind_to;
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/** Stack for the receiver's fiber, which prints out messages as
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* they come in. Should be sized IPI_CONSOLE_STACK_SIZE */
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char *fiber_stack;
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/** Ring buffer data area for stashing characters from the interrupt
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* callback */
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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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/** 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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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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/** Destination for received console messages, one of
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* IPI_CONSOLE_STDOUT or IPI_CONSOLE_PRINTK */
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unsigned int flags;
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};
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struct ipi_console_receiver_runtime_data {
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/** Buffer for received bytes from the low-level IPI device */
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struct ring_buf rb;
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/** Semaphore to wake up the fiber to print out messages */
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struct nano_sem sem;
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/** pointer to the bound low-level IPI device */
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struct device *ipi_device;
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};
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struct ipi_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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/** Source of messages to forward, hooks will be installed.
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* Can be IPI_CONSOLE_STDOUT, IPI_CONSOLE_PRINTK, or both */
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int flags;
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};
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#if CONFIG_IPI_CONSOLE_RECEIVER
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int ipi_console_receiver_init(struct device *d);
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#endif
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#if CONFIG_IPI_CONSOLE_SENDER
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int ipi_console_sender_init(struct device *d);
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#endif
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#endif /* _IPI_CONSOLE_H_ */
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