Revert "cpukit/dev/can: Added CAN support"

This reverts commit cd91b37dce728b372f164355719a4e601e12e7b3.

Closes #4803.

3 files changed, 0 insertions, 620 deletions

diff --git a/cpukit/include/dev/can/can-msg.h b/cpukit/include/dev/can/can-msg.h
deleted file mode 100644
index 9863e14d84..0000000000
--- a/cpukit/include/dev/can/can-msg.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-
-/**
- * @file
- *
- * @ingroup CANBus
- *
- * @brief Controller Area Network (CAN) Bus Implementation
- *
- */
-
-/*
- * Copyright (C) 2022 Prashanth S <fishesprashanth@gmail.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _DEV_CAN_CAN_MSG_H
-#define _DEV_CAN_CAN_MSG_H
-
-/**
- * @defgroup Controller Area Network (CAN) Driver
- *
- * @ingroup RTEMSDeviceDrivers
- *
- * @brief Controller Area Network (CAN) bus and device driver support.
- *
- * @{
- */
-
-/**
- * @defgroup CANBus CAN Bus Driver
- *
- * @ingroup CAN
- *
- * @{
- */
-
-/**
- * @brief CAN message size
- */
-#define CAN_MSG_MAX_SIZE  (8u)
-
-/**
- * @brief Number of CAN tx buffers
- */
-#define CAN_TX_BUF_COUNT  (10u)
-
-/**
- * @brief Number of CAN rx buffers
- */
-#define CAN_RX_BUF_COUNT  (2u)
-
-#define CAN_MSGLEN(msg) (sizeof(struct can_msg) - (CAN_MSG_MAX_SIZE - msg->len))
-
-/**
- * @brief CAN message structure.
- */
-struct can_msg {
- /**
-   * @brief CAN message id.
-   */
-  uint32_t id;
- /**
-   * @brief CAN message timestamp.
-   */
-  uint32_t timestamp;
- /**
-   * @brief CAN message flags RTR | BRS | EXT.
-   */
-  uint16_t flags;
- /**
-   * @brief CAN message length.
-   */
-  uint16_t len;
- /**
-   * @brief CAN message.
-   */
-  uint8_t data[CAN_MSG_MAX_SIZE];
-};
-
-/** @} */  /* end of CAN message */
-
-/** @} */
-
-#endif /* _DEV_CAN_CAN_MSG_H */
diff --git a/cpukit/include/dev/can/can.h b/cpukit/include/dev/can/can.h
deleted file mode 100644
index 9e55395039..0000000000
--- a/cpukit/include/dev/can/can.h
+++ /dev/null
@@ -1,284 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-
-/**
- * @file
- *
- * @ingroup CANBus
- *
- * @brief Controller Area Network (CAN) Bus Implementation
- *
- */
-
-/*
- * Copyright (C) 2022 Prashanth S (fishesprashanth@gmail.com)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _DEV_CAN_CAN_H
-#define _DEV_CAN_CAN_H
-
-#include <rtems/imfs.h>
-#include <rtems/thread.h>
-#include <semaphore.h>
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#include <dev/can/can-msg.h>
-
-#define DEBUG(str, ...)                                                   \
-    do {                                                                      \
-      printf("CAN: %s:%d ID: %08X ", __FILE__, __LINE__, rtems_task_self());  \
-      printf(str, ##__VA_ARGS__);                                             \
-    } while (false);
-
-#define CAN_DEBUG(str, ...) DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_BUF(str, ...) CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_ISR(str, ...) CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_LOCK(str, ...) CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_RX(str, ...) CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_TX(str, ...) CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_DEBUG_REG(str, ...) //CAN_DEBUG(str, ##__VA_ARGS__)
-#define CAN_ERR(str, ...) DEBUG(str, ##__VA_ARGS__)
-
-#define CAN_MSG_LEN(msg) ((char *)(&((struct can_msg *)msg)->data[(uint16_t)((struct can_msg *)msg)->len]) - (char *)(msg))
-
-/* Maximum Bus Reg (255) */
-#define CAN_BUS_REG_MAX (255)
-
-/**
- * @defgroup Controller Area Network (CAN) Driver
- *
- * @ingroup RTEMSDeviceDrivers
- *
- * @brief Controller Area Network (CAN) bus and device driver support.
- *
- * @{
- */
-
-/**
- * @defgroup CANBus CAN Bus Driver
- *
- * @ingroup CAN
- *
- * @{
- */
-
-/**
- * @brief CAN tx fifo data structure.
- */
-struct ring_buf {
- /**
-   * @brief Pointer to array of can_msg structure.
-   */
-  struct can_msg *pbuf;
- /**
-   * @brief Index of the next free buffer.
-   */
-  uint32_t head;
- /**
-   * @brief Index of the produced buffer.
-   */
-  uint32_t tail;
-  /**
-   * @brief Number of empty buffers.
-   */
-  uint32_t empty_count;
-};
-
-/**
- * @brief CAN Controller device specific operations.
- * These function pointers are initialized by the CAN device driver while
- * registering (can_bus_register).
- */
-typedef struct can_dev_ops {
-  /**
-   * @brief Transfers CAN messages to device fifo.
-   *
-   * @param[in] priv device control structure.
-   * @param[in] msg can_msg message structure.
-   *
-   * @retval 0 Successful operation.
-   * @retval >0 error number in case of an error.
-   */
-  int32_t (*dev_tx)(void *priv, struct can_msg *msg);
-  /**
-   * @brief Check device is ready to transfer a CAN message
-   *
-   * @param[in] priv device control structure.
-   *
-   * @retval true device ready.
-   * @retval false device not ready.
-   */
-  bool (*dev_tx_ready)(void *priv);
-  /**
-   * @brief Enable/Disable CAN interrupts.
-   *
-   * @param[in] priv device control structure.
-   * @param[in] flag true/false to Enable/Disable CAN interrupts.
-   *
-   */
-  void (*dev_int)(void *priv, bool flag);
-  /**
-   * @brief CAN device specific I/O controls.
-   *
-   * @param[in] priv device control structure.
-   * @param[in] buffer This depends on the cmd.
-   * @param[in] cmd Device specific I/O commands.
-   *
-   * @retval 0 Depends on the cmd.
-   */
-  int32_t (*dev_ioctl)(void *priv, void *buffer, size_t cmd);
-} can_dev_ops;
-
-/**
- * @name CAN bus control
- *
- * @{
- */
-
-/**
- * @brief Obtains the bus.
- *
- * This command has no argument.
- */
-typedef struct can_bus {
- /**
-   * @brief Device specific control.
-   */
-  void *priv;
- /**
-   * @brief Device controller index.
-   */
-  uint8_t index;
- /**
-   * @brief Device specific operations.
-   */
-  struct can_dev_ops *can_dev_ops;
- /**
-   * @brief tx fifo.
-   */
-  struct ring_buf tx_fifo;
- /**
-   * @brief Counting semaphore id (for fifo sync).
-   */
-  rtems_id tx_fifo_sem_id;
-
- /* FIXME: Using only one CAN msg buffer, Should create a ring buffer */
- /**
-   * @brief rx fifo.
-   */
-  struct can_msg can_rx_msg;
- /**
-   * @brief Mutex to handle bus concurrency.
-   */
-  rtems_mutex mutex;
-  /**
-   * @brief Destroys the bus.
-   *
-   * @param[in] bus control structure.
-   */
-  void (*destroy)(struct can_bus *bus);
-#ifdef CAN_DEBUG_LOCK
-
- /**
-   * @brief For debugging semaphore obtain/release.
-   */
-  int sem_count;
-
-#endif /* CAN_DEBUG_LOCK */
-
-} can_bus;
-
-/** @} */
-
-/**
- * @brief Register a CAN node with the CAN bus driver.
- *
- * @param[in] bus bus control structure.
- * @param[in] bus_path path of device node.
- *
- * @retval >=0 rtems status.
- */
-rtems_status_code can_bus_register(can_bus *bus, const char *bus_path);
-
-/**
- * @brief Allocate and initilaize bus control structure.
- *
- * @param[in] size Size of the bus control structure.
- *
- * @retval NULL No memory available.
- * @retval Address Pointer to the allocated bus control structure.
- */
-can_bus *can_bus_alloc_and_init(size_t size);
-
-/**
- * @brief initilaize bus control structure.
- *
- * @param[in] bus bus control structure.
- *
- * @retval 0 success.
- * @retval >0 error number.
- */
-int can_bus_init(can_bus *bus);
-
-/**
- * @brief Initiates CAN message transfer.
- * 
- * Should be called with CAN interrupt disabled.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval 0 success.
- * @retval >0 error number.
- */
-int can_tx_done(struct can_bus *bus);
-
-/**
- * @brief Sends the received CAN message to the application.
- * 
- * Should be called by the device when CAN message should be sent to applicaiton.
- * Should be called only with CAN interrupts disabled.
- *
- * @param[in] bus bus control structure.
- * @param[in] msg can_msg structure.
- *
- * @retval 0 success.
- * @retval >0 error number.
- */
-int can_receive(struct can_bus *bus, struct can_msg *msg);
-
-/**
- * @brief Prints the can_msg values pointed by msg.
- * 
- * @param[in] msg can_msg structure.
- *
- */
-void can_print_msg(struct can_msg const *msg);
-
-/** @} */  /* end of CAN device driver */
-
-/** @} */
-
-#endif /* _DEV_CAN_CAN_H */
diff --git a/cpukit/include/dev/can/canqueueimpl.h b/cpukit/include/dev/can/canqueueimpl.h
deleted file mode 100644
index ef0d56fe31..0000000000
--- a/cpukit/include/dev/can/canqueueimpl.h
+++ /dev/null
@@ -1,231 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-
-/**
- * @file
- *
- * @ingroup CANBus
- *
- * @brief Controller Area Network (CAN) Bus Implementation
- *
- */
-
-/*
- * Copyright (C) 2022 Prashanth S <fishesprashanth@gmail.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _DEV_CAN_CAN_QUEUE_H
-#define _DEV_CAN_CAN_QUEUE_H
-
-#include <rtems/imfs.h>
-#include <rtems/thread.h>
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#include <dev/can/can-msg.h>
-#include <dev/can/can.h>
-
-/**
- * @defgroup Controller Area Network (CAN) Driver
- *
- * @ingroup RTEMSDeviceDrivers
- *
- * @brief Controller Area Network (CAN) bus and device driver support.
- *
- * @{
- */
-
-/**
- * @defgroup CANBus CAN Bus Driver
- *
- * @ingroup CAN
- *
- * @{
- */
-
-/**
- * @brief Create CAN tx buffers.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval 0 Successful operation.
- * @retval >0 error number in case of an error.
- */
-static rtems_status_code can_bus_create_tx_buffers(struct can_bus *bus);
-
-/**
- * @brief Free CAN tx buffers.
- *
- * @param[in] bus Bus control structure.
- *
- */
-static void can_bus_free_tx_buffers(struct can_bus *bus);
-
-/**
- * @brief Check for atleast one empty CAN tx buffer.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval true If atleast one CAN buffer is empty.
- * @retval false If no CAN buffer is empty.
- */
-static bool can_bus_tx_buf_is_empty(struct can_bus *bus);
-
-/**
- * @brief Get a produced tx buffer to transmit from the tx fifo.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval can_msg Pointer to can_msg structure buffer.
- * @retval NULL If no can_msg buffer.
- */
-static struct can_msg *can_bus_tx_get_data_buf(struct can_bus *bus);
-
-/**
- * @brief Get a empty tx buffer.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval can_msg Pointer to can_msg structure buffer.
- * @retval NULL If no empty can_msg buffer.
- */
-static struct can_msg *can_bus_tx_get_empty_buf(struct can_bus *bus);
-
-/**
- * @brief Creates tx buffers for the CAN bus driver.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval rtems_status_code
- */
-static rtems_status_code can_bus_create_tx_buffers(struct can_bus *bus)
-{
-  bus->tx_fifo.pbuf = (struct can_msg *)malloc(CAN_TX_BUF_COUNT *
-                              sizeof(struct can_msg));
-  if (bus->tx_fifo.pbuf == NULL) {
-    CAN_ERR("can_create_tx_buffers: malloc failed\n");
-    return RTEMS_NO_MEMORY;
-  }
-
-  bus->tx_fifo.empty_count = CAN_TX_BUF_COUNT;
-
-  return RTEMS_SUCCESSFUL;
-}
-
-/**
- * @brief Free tx buffers for the CAN bus driver.
- *
- * @param[in] bus Bus control structure.
- *
- */
-static void can_bus_free_tx_buffers(struct can_bus *bus)
-{
-  free(bus->tx_fifo.pbuf);
-}
-
-/**
- * @brief Check if there is atleast one tx buffer in the CAN
- * bus driver.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval true - If there is at least one free tx buffer.
- *         false - If there is no free tx buffer.
- */
-static bool can_bus_tx_buf_is_empty(struct can_bus *bus)
-{
-  if (bus->tx_fifo.empty_count == 0) {
-    return false;
-  }
-
-  return true;
-}
-
-/**
- * @brief To get a can_msg tx buf which contains valid data to send in 
- * in the CAN bus.
- *
- * Note: freeing the returned data buf is done in the same function,
- * So the returned buffer should be sent before releasing the
- * lock acquired while calling this function.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval *can_msg - If there is atleast one tx buffer to send in the CAN bus.
- *         NULL - If there is no valid tx buffer.
- */
-static struct can_msg *can_bus_tx_get_data_buf(struct can_bus *bus)
-{
-  struct can_msg *msg = NULL;
-
-  if (bus->tx_fifo.empty_count == CAN_TX_BUF_COUNT || 
-                                    bus->tx_fifo.tail >= CAN_TX_BUF_COUNT) {
-    CAN_DEBUG_BUF("can_bus_tx_get_data_buf: All buffers are empty\n");
-    return NULL;
-  }
-
-  msg = &bus->tx_fifo.pbuf[bus->tx_fifo.tail];
-  bus->tx_fifo.empty_count++;
-  bus->tx_fifo.tail = (bus->tx_fifo.tail + 1) % CAN_TX_BUF_COUNT;
-
-  return msg;
-}
-    
-/**
- * @brief To get a can_msg tx buf which is empty (contains no valid data).
- *
- * Note: marking the returned buf valid is done in the same function
- * So a valid CAN message should be copied to the returned buffer before
- * releasing the lock acquired while calling this function.
- *
- * @param[in] bus Bus control structure.
- *
- * @retval *can_msg - If there is atleast one empty tx buffer.
- *         NULL - If there is no empty tx buffer.
- */
-static struct can_msg *can_bus_tx_get_empty_buf(struct can_bus *bus)
-{
-  struct can_msg *msg = NULL;
-
-  /* Check whether there is a empty CAN msg buffer */
-  if (can_bus_tx_buf_is_empty(bus) == false) {
-    CAN_DEBUG_BUF("can_bus_tx_get_empty_buf: No empty buffer\n");
-    return NULL;
-  }
-
-  bus->tx_fifo.empty_count--;
-
-  /* tx_fifo.head always points to a empty buffer if there is atleast one */
-  msg = &bus->tx_fifo.pbuf[bus->tx_fifo.head];
-  bus->tx_fifo.head = (bus->tx_fifo.head + 1) % CAN_TX_BUF_COUNT;
-
-  return msg;
-}
-
-/** @} */  /* end of CAN device driver */
-
-/** @} */
-
-#endif /*_DEV_CAN_CAN_QUEUE_H */