/*!
* \brief Reads the data from the log.
*
* <table>
* <tr>
* <td><b>read_type</b></td>
* <td><b>Returns this entry in the log:</b></td>
* </tr>
* <tr>
* <td>LOG_READ_NEWEST</td>
* <td>Newest.</td>
* </tr>
* <tr>
* <td>LOG_READ_NEXT</td>
* <td>Next one after the previous one read (must be used with LOG_READ_OLDEST).</td>
* </tr>
* <tr>
* <td>LOG_READ_OLDEST</td>
* <td>Oldest.</td>
* </tr>
* <tr>
* <td>LOG_READ_OLDEST_AND_DELETE</td>
* <td>Oldest and deletes it.</td>
* </tr>
* </table>
*
* \param[in] log_number Log number of a previously created log.
* \param[in] read_type Type of read operation (see Description).
* \param[in] size_to_read Maximum number of _mqx_uints (not including the entry
* header) to be read from an entry.
* \param[in] entry_ptr Where to write the log entry (any structure that
* starts with LOG_STRUCT or LOG_ENTRY_STRUCT).
*
* \return MQX_OK
* \return LOG_INVALID (Log_number is out of range.)
* \return LOG_DOES_NOT_EXIST (Log_number was not created.)
* \return LOG_ENTRY_NOT_AVAILABLE (Log entry is not available.)
* \return LOG_INVALID_READ_TYPE (Read_type is not valid.)
* \return MQX_COMPONENT_DOES_NOT_EXIST (Log component is not created.)
* \return MQX_INVALID_POINTER (Entry_ptr is NULL.)
* \return MQX_INVALID_COMPONENT_HANDLE (Log component data is not valid.)
*
* \see _log_create
* \see _log_write
* \see LOG_STRUCT
* \see LOG_ENTRY_STRUCT
*/
_mqx_uint _log_read
(
_mqx_uint log_number,
_mqx_uint read_type,
_mqx_uint size_to_read,
LOG_ENTRY_STRUCT_PTR entry_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LOG_COMPONENT_STRUCT_PTR log_component_ptr;
LOG_HEADER_STRUCT_PTR log_header_ptr;
LOG_ENTRY_STRUCT_PTR log_ptr;
_mqx_uint_ptr data_ptr;
_mqx_uint_ptr next_ptr;
_mqx_uint_ptr user_ptr;
_mqx_uint size;
uint_16 milliseconds;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (log_number >= LOG_MAXIMUM_NUMBER)
{
return(LOG_INVALID);
} /* Endif */
if (kernel_data->KERNEL_COMPONENTS[KERNEL_LOG] == NULL)
{
return(MQX_COMPONENT_DOES_NOT_EXIST);
} /* Endif */
if (entry_ptr == NULL)
{
return(MQX_INVALID_POINTER);
} /* Endif */
#endif
log_component_ptr = (LOG_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_LOG];
#if MQX_CHECK_VALIDITY
if (log_component_ptr->VALID != LOG_VALID)
{
return(MQX_INVALID_COMPONENT_HANDLE);
} /* Endif */
#endif
_INT_DISABLE();
log_header_ptr = log_component_ptr->LOGS[log_number];
#if MQX_CHECK_ERRORS
if (log_header_ptr == NULL)
{
_int_enable();
return(LOG_DOES_NOT_EXIST);
} /* Endif */
#endif
if (log_header_ptr->SIZE == 0)
{
/* No data available */
_INT_ENABLE();
return(LOG_ENTRY_NOT_AVAILABLE);
} /* Endif */
if (read_type == LOG_READ_OLDEST_AND_DELETE)
{
data_ptr = log_header_ptr->LOG_READ;
}
else if (read_type == LOG_READ_NEXT)
{
data_ptr = log_header_ptr->LOG_NEXT;
if (data_ptr == NULL)
{
_INT_ENABLE();
return(LOG_ENTRY_NOT_AVAILABLE);
} /* Endif */
}
else if (read_type == LOG_READ_OLDEST)
{
data_ptr = log_header_ptr->LOG_READ;
}
else if (read_type == LOG_READ_NEWEST)
{
data_ptr = log_header_ptr->LAST_LOG;
#if MQX_CHECK_ERRORS
}
else
{
_int_enable();
return(LOG_INVALID_READ_TYPE);
#endif
} /* Endif */
size = *data_ptr;
next_ptr = data_ptr + size;
#if 0
if (next_ptr >= log_header_ptr->LOG_END)
{
next_ptr = log_header_ptr->LOG_START +
(next_ptr - log_header_ptr->LOG_END);
} /* Endif */
#else
if (log_header_ptr->LOG_READ < log_header_ptr->LOG_WRITE)
{
/* R < W */
if (next_ptr >= log_header_ptr->LOG_WRITE)
{
next_ptr = log_header_ptr->LOG_READ;
} /* Endif */
}
else
{
/* R > W */
if (next_ptr >= log_header_ptr->LOG_END)
{
next_ptr = log_header_ptr->LOG_START +
(next_ptr - log_header_ptr->LOG_END);
} /* Endif */
if (next_ptr == log_header_ptr->LOG_WRITE)
{
next_ptr = log_header_ptr->LOG_READ;
} /* Endif */
} /* Endif */
#endif
if (read_type == LOG_READ_OLDEST_AND_DELETE)
{
log_header_ptr->LOG_READ += size;
log_header_ptr->SIZE -= size;
if (log_header_ptr->LOG_READ >= log_header_ptr->LOG_END)
{
log_header_ptr->LOG_READ = log_header_ptr->LOG_START +
(log_header_ptr->LOG_READ - log_header_ptr->LOG_END);
} /* Endif */
} /* Endif */
if (size > (size_to_read + (_mqx_uint)sizeof(LOG_ENTRY_STRUCT)/sizeof(_mqx_uint)))
{
size = (size_to_read + (_mqx_uint)sizeof(LOG_ENTRY_STRUCT)/sizeof(_mqx_uint));
} /* Endif */
++size;
user_ptr = (_mqx_uint_ptr)((pointer)entry_ptr);
while (--size)
{
*user_ptr++ = *data_ptr++;
if (data_ptr == log_header_ptr->LOG_END)
{
data_ptr = log_header_ptr->LOG_START;
} /* Endif */
} /* Endwhile */
log_ptr = entry_ptr;
if (log_ptr->MICROSECONDS > MICROSECS_IN_MILLISECOND)
{
milliseconds = log_ptr->MICROSECONDS / (uint_16)MICROSECS_IN_MILLISECOND;
log_ptr->MILLISECONDS += milliseconds;
log_ptr->MICROSECONDS -= (milliseconds * (uint_16)MICROSECS_IN_MILLISECOND);
} /* Endif */
if (read_type == LOG_READ_NEXT)
{
log_header_ptr->LOG_NEXT = next_ptr;
}
else if (read_type == LOG_READ_OLDEST)
{
log_header_ptr->LOG_NEXT = next_ptr;
}
else
{
log_header_ptr->LOG_NEXT = NULL;
} /* Endif */
_INT_ENABLE();
return(MQX_OK);
} /* Endbody */
void _msgpool_add_internal
(
/* [IN] a pointer to the message pool */
MSGPOOL_STRUCT_PTR msgpool_ptr,
/* [IN] the number of messages to attempt to add */
uint_16 num_messages
)
{ /* Body */
INTERNAL_MESSAGE_STRUCT_PTR first_imsg_ptr;
INTERNAL_MESSAGE_STRUCT_PTR imsg_ptr;
MSGPOOL_BLOCK_STRUCT_PTR msgpool_block_ptr;
_mqx_int raw_message_size;
_mqx_uint count;
raw_message_size = sizeof(INTERNAL_MESSAGE_STRUCT) -
sizeof(MESSAGE_HEADER_STRUCT) + msgpool_ptr->MESSAGE_SIZE;
_MEMORY_ALIGN_VAL_LARGER(raw_message_size);
msgpool_block_ptr = (MSGPOOL_BLOCK_STRUCT_PTR)_mem_alloc_system((_mem_size)
((raw_message_size*num_messages) + sizeof(MSGPOOL_BLOCK_STRUCT) +
PSP_MEMORY_ALIGNMENT));
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (msgpool_block_ptr == NULL) {
return;
} /* Endif */
#endif
_mem_set_type(msgpool_block_ptr, MEM_TYPE_MESSAGE_POOL_BLOCKS);
msgpool_block_ptr->NEXT_BLOCK_PTR = NULL;
msgpool_block_ptr->RAW_MESSAGE_SIZE = raw_message_size;
msgpool_block_ptr->NUM_MESSAGES = num_messages;
first_imsg_ptr =(INTERNAL_MESSAGE_STRUCT_PTR)
((uchar _PTR_)msgpool_block_ptr + sizeof(MSGPOOL_BLOCK_STRUCT));
first_imsg_ptr = (INTERNAL_MESSAGE_STRUCT_PTR)
_ALIGN_ADDR_TO_HIGHER_MEM(first_imsg_ptr);
msgpool_block_ptr->FIRST_IMSG_PTR = first_imsg_ptr;
imsg_ptr = first_imsg_ptr;
count = num_messages + 1;
while (--count){
imsg_ptr->NEXT = NULL; /* Free list pointer */
imsg_ptr->VALID = MSG_VALID;
imsg_ptr->FREE = TRUE;
imsg_ptr->QUEUED = FALSE;
imsg_ptr->MSGPOOL_PTR = msgpool_ptr;
imsg_ptr->TD_PTR = NULL;
if (count > 1) {
/* imsg is in the middle of the list */
imsg_ptr->NEXT = (INTERNAL_MESSAGE_STRUCT_PTR)
((uchar _PTR_)imsg_ptr + raw_message_size);
imsg_ptr = imsg_ptr->NEXT;
}/* Endif */
} /* Endwhile */
/* Now make the pool entries available */
_int_disable();
msgpool_block_ptr->NEXT_BLOCK_PTR = msgpool_ptr->MSGPOOL_BLOCK_PTR;
msgpool_ptr->MSGPOOL_BLOCK_PTR = msgpool_block_ptr;
/* imsg_ptr here is the last message on the list */
imsg_ptr->NEXT = msgpool_ptr->MSG_FREE_LIST_PTR;
msgpool_ptr->MSG_FREE_LIST_PTR = first_imsg_ptr;
msgpool_ptr->SIZE += num_messages;
msgpool_ptr->MAX += num_messages;
_int_enable();
} /* Endbody */
_mqx_int _io_sai_int_open
(
/* [IN] the file handle for the device being opened */
MQX_FILE_PTR fd_ptr,
/* [IN] the remaining portion of the name of the device */
char_ptr open_name_ptr,
/* [IN] the flags to be used during operation */
char_ptr flags
)
{ /* Body */
IO_DEVICE_STRUCT_PTR io_dev_ptr;
IO_SAI_DEVICE_STRUCT_PTR io_sai_dev_ptr;
_mqx_int result = MQX_OK;
uint_32 i = 0;
boolean read_open = FALSE;
boolean write_open = FALSE;
io_dev_ptr = (IO_DEVICE_STRUCT_PTR)fd_ptr->DEV_PTR;
io_sai_dev_ptr = (pointer)(io_dev_ptr->DRIVER_INIT_PTR);
io_sai_dev_ptr->FLAGS = 0;
if (flags == NULL)
{
flags = "rw";
}
while (flags[i] != '\0')
{
if (flags[i] == 'r') // open device for reading
{
read_open = TRUE;
}
if (flags[i++] == 'w') // open device for writing
{
write_open = TRUE;
}
}
/* If we want to open device for reading */
if (read_open)
{
_int_disable ();
if (io_sai_dev_ptr->READ_COUNT)
{
/* Device is already opened for reading */
_int_enable ();
return MQX_IO_OPERATION_NOT_AVAILABLE;
}
_int_enable ();
io_sai_dev_ptr->FLAGS |= I2S_IO_READ;
}
/* If we want to open device for writing */
if (write_open)
{
_int_disable ();
if (io_sai_dev_ptr->WRITE_COUNT)
{
/* Device is already opened for reading */
_int_enable ();
return MQX_IO_OPERATION_NOT_AVAILABLE;
}
_int_enable ();
io_sai_dev_ptr->FLAGS |= I2S_IO_WRITE;
}
fd_ptr->FLAGS = (_mqx_uint)flags;
result = (*io_sai_dev_ptr->DEV_INIT)(io_sai_dev_ptr);
if (result == MQX_OK)
{
if (read_open)
{
io_sai_dev_ptr->READ_COUNT = 1;
}
if (write_open)
{
io_sai_dev_ptr->WRITE_COUNT = 1;
}
}
return result;
} /* Endbody */
/*!
* \private
*
* \brief Used by a task to destroy an instance of a lightweight event.
*
* \param[in] event_ptr Pointer to the lightweight event to be deinitialized.
* \param[in] user User mode
*
* \return MQX_OK
* \return MQX_LWEVENT_INVALID (Lightweight event was not valid.)
* \return MQX_CANNOT_CALL_FUNCTION_FROM_ISR (Function cannot be called from an ISR.)
*
* \see _lwevent_destroy
* \see LWEVENT_STRUCT
*/
_mqx_uint _lwevent_destroy_internal
(
LWEVENT_STRUCT_PTR event_ptr,
bool user
)
{
KERNEL_DATA_STRUCT_PTR kernel_data;
#if MQX_COMPONENT_DESTRUCTION
TD_STRUCT_PTR td_ptr;
#endif
#if MQX_ENABLE_USER_MODE
if (user && !_psp_mem_check_access_mask((uint32_t)event_ptr,
sizeof(LWEVENT_STRUCT),
MPU_UM_R, MPU_UM_RW))
{
return MQX_LWEVENT_INVALID;
}
#endif
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_lwevent_destroy, event_ptr);
#if MQX_COMPONENT_DESTRUCTION
#if MQX_CHECK_ERRORS
if (kernel_data->IN_ISR)
{
_KLOGX2(KLOG_lwevent_destroy, MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
return (MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
} /* Endif */
#endif
_int_disable();
#if MQX_CHECK_VALIDITY
if (event_ptr->VALID != LWEVENT_VALID)
{
_int_enable();
_KLOGX2(KLOG_lwevent_destroy, MQX_LWEVENT_INVALID);
return (MQX_LWEVENT_INVALID);
} /* Endif */
#endif
/* Effectively stop all access to the event */
event_ptr->VALID = 0;
while (_QUEUE_GET_SIZE(&event_ptr->WAITING_TASKS))
{
_QUEUE_DEQUEUE(&event_ptr->WAITING_TASKS, td_ptr);
_BACKUP_POINTER(td_ptr, TD_STRUCT, AUX_QUEUE);
_TIME_DEQUEUE(td_ptr, kernel_data);
_TASK_READY(td_ptr, kernel_data);
} /* Endwhile */
/* remove event from kernel LWEVENTS queue */
#if MQX_ENABLE_USER_MODE
if (user)
{
_QUEUE_REMOVE(&kernel_data->USR_LWEVENTS, event_ptr);
}
else
#endif
{
_QUEUE_REMOVE(&kernel_data->LWEVENTS, event_ptr);
}
_int_enable();
/* May need to let higher priority task run */
_CHECK_RUN_SCHEDULER();
#endif
_KLOGX2(KLOG_lwevent_destroy, MQX_OK);
return (MQX_OK);
}
/*!
* \brief Used by a task to set the specified event bits in an event.
*
* \param[in] event_ptr Pointer to the lightweight event to set bits in.
* \param[in] bit_mask Bit mask. Each bit represents an event bit to be set.
*
* \return MQX_OK
* \return MQX_LWEVENT_INVALID (Lightweight event was invalid.)
*
* \see _lwevent_create
* \see _lwevent_destroy
* \see _lwevent_set_auto_clear
* \see _lwevent_clear
* \see _lwevent_test
* \see _lwevent_wait_for
* \see _lwevent_wait_ticks
* \see _lwevent_wait_until
* \see _lwevent_get_signalled
* \see LWEVENT_STRUCT
*/
_mqx_uint _lwevent_set
(
LWEVENT_STRUCT_PTR event_ptr,
_mqx_uint bit_mask
)
{
KERNEL_DATA_STRUCT_PTR kernel_data;
QUEUE_ELEMENT_STRUCT_PTR q_ptr;
QUEUE_ELEMENT_STRUCT_PTR next_q_ptr;
TD_STRUCT_PTR td_ptr;
_mqx_uint set_bits;
#if MQX_ENABLE_USER_MODE && MQX_ENABLE_USER_STDAPI
if (MQX_RUN_IN_USER_MODE)
{
return _usr_lwevent_set(event_ptr, bit_mask);
}
#endif
_GET_KERNEL_DATA(kernel_data);
_KLOGE3(KLOG_lwevent_set, event_ptr, bit_mask);
_INT_DISABLE();
#if MQX_CHECK_VALIDITY
if (event_ptr->VALID != LWEVENT_VALID)
{
_int_enable();
_KLOGX2(KLOG_lwevent_set, MQX_LWEVENT_INVALID);
return (MQX_LWEVENT_INVALID);
} /* Endif */
#endif
set_bits = event_ptr->VALUE | bit_mask;
if (_QUEUE_GET_SIZE(&event_ptr->WAITING_TASKS))
{
/* Schedule waiting task(s) to run if bits ok */
q_ptr = event_ptr->WAITING_TASKS.NEXT;
while (q_ptr != (QUEUE_ELEMENT_STRUCT_PTR) ((void *) &event_ptr->WAITING_TASKS))
{
td_ptr = (void *) q_ptr;
_BACKUP_POINTER(td_ptr, TD_STRUCT, AUX_QUEUE);
next_q_ptr = q_ptr->NEXT;
if (((td_ptr->FLAGS & TASK_LWEVENT_ALL_BITS_WANTED) && ((td_ptr->LWEVENT_BITS & set_bits)
== td_ptr->LWEVENT_BITS)) || ((!(td_ptr->FLAGS & TASK_LWEVENT_ALL_BITS_WANTED))
&& (td_ptr->LWEVENT_BITS & set_bits)))
{
_QUEUE_REMOVE(&event_ptr->WAITING_TASKS, q_ptr);
_TIME_DEQUEUE(td_ptr, kernel_data);
td_ptr->INFO = 0;
_TASK_READY(td_ptr, kernel_data);
/* store information about which bits caused task to be unblocked */
td_ptr->LWEVENT_BITS &= set_bits;
set_bits &= ~(event_ptr->AUTO & td_ptr->LWEVENT_BITS);
} /* Endif */
q_ptr = next_q_ptr;
} /* Endwhile */
} /* Endif */
event_ptr->VALUE = set_bits;
_INT_ENABLE();
/* May need to let higher priority task run */
_CHECK_RUN_SCHEDULER();
_KLOGX2(KLOG_lwevent_set, MQX_OK);
return (MQX_OK);
}
/*!
* \brief Allocates a message from a system message pool.
*
* The size of the message is determined by the message size that a task
* specified when it called _msgpool_create_system().
* \n The message is a resource of the task until the task either frees it
* (_msg_free()) or puts it on a message queue (_msgq_send family of functions.)
*
* \param[in] message_size Maximum size (in single-addressable units) of the
* message.
*
* \return Pointer to a message of at least message_size single-addressable
* units (success).
* \return NULL (Failure: message component is not created.)
*
* \warning On failure, calls _task_set_error() to set one of the following task
* error codes:
* \li MQX_COMPONENT_DOES_NOT_EXIST (Message component is not created.)
* \li Task error codes from _mem_alloc_system() (If MQX needs to grow the pool.)
*
* \see _mem_alloc
* \see _mem_alloc_from
* \see _mem_alloc_system
* \see _mem_alloc_system_from
* \see _mem_alloc_system_zero
* \see _mem_alloc_system_zero_from
* \see _mem_alloc_zero
* \see _mem_alloc_zero_from
* \see _mem_alloc_align
* \see _mem_alloc_align_from
* \see _mem_alloc_at
* \see _msg_alloc
* \see _msg_free
* \see _msgpool_create_system
* \see _msgq_send
* \see _task_set_error
* \see MESSAGE_HEADER_STRUCT
*/
void *_msg_alloc_system
(
_msg_size message_size
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
MSG_COMPONENT_STRUCT_PTR msg_component_ptr;
register INTERNAL_MESSAGE_STRUCT_PTR imsg_ptr;
register MESSAGE_HEADER_STRUCT_PTR message_ptr;
register MSGPOOL_STRUCT_PTR msgpool_ptr;
uint16_t grow_number;
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_msg_alloc_system, message_size );
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
#if MQX_CHECK_ERRORS
if (msg_component_ptr == NULL)
{
_task_set_error(MQX_COMPONENT_DOES_NOT_EXIST);
_KLOGX2( KLOG_msg_alloc_system, NULL );
return(NULL);
}/* Endif */
#endif
message_ptr = NULL;
_INT_DISABLE();
msgpool_ptr = msg_component_ptr->SMALLEST_MSGPOOL_PTR;
while (msgpool_ptr != NULL)
{
if (msgpool_ptr->MESSAGE_SIZE >= message_size)
{
imsg_ptr = msgpool_ptr->MSG_FREE_LIST_PTR;
if ( (imsg_ptr == NULL) &&
(msgpool_ptr->GROW_NUMBER) &&
(msgpool_ptr->MAX < msgpool_ptr->GROW_LIMIT) )
{
/* Attempt to add elements to the pool */
grow_number = msgpool_ptr->GROW_NUMBER;
if ( ((uint16_t)(msgpool_ptr->MAX + grow_number) > msgpool_ptr->GROW_LIMIT))
{
grow_number = msgpool_ptr->GROW_LIMIT - msgpool_ptr->MAX;
} /* Endif */
_msgpool_add_internal(msgpool_ptr, grow_number);
imsg_ptr = msgpool_ptr->MSG_FREE_LIST_PTR;
} /* Endif */
if ( imsg_ptr != NULL )
{
msgpool_ptr->MSG_FREE_LIST_PTR = imsg_ptr->NEXT;
--msgpool_ptr->SIZE;
_INT_ENABLE();
imsg_ptr->FREE = FALSE;
imsg_ptr->QUEUED = FALSE;
if (kernel_data->IN_ISR)
{
imsg_ptr->TD_PTR = NULL;
}
else
{
imsg_ptr->TD_PTR = kernel_data->ACTIVE_PTR;
} /* Endif */
message_ptr = (MESSAGE_HEADER_STRUCT_PTR)&imsg_ptr->MESSAGE;
message_ptr->TARGET_QID = MSGQ_NULL_QUEUE_ID;
message_ptr->SOURCE_QID = MSGQ_NULL_QUEUE_ID;
message_ptr->SIZE = message_size;
message_ptr->CONTROL = MSG_HDR_ENDIAN | MSG_DATA_ENDIAN;
_KLOGX2(KLOG_msg_alloc_system, message_ptr);
return (void *)message_ptr;
} /* Endif */
} /* Endif */
msgpool_ptr = msgpool_ptr->NEXT_MSGPOOL_PTR;
} /* Endwhile */
_int_enable();
_KLOGX2(KLOG_msg_alloc_system, message_ptr);
return (void *)message_ptr;
} /* Endbody */
boolean _29wsxxxN_program
(
/* [IN] the flash information structure */
IO_FLASHX_STRUCT_PTR dev_ptr,
/* [IN] where to copy data from */
char_ptr from_ptr,
/* [OUT] where to copy data to */
char_ptr to_ptr,
/* [IN] the size to copy in bytes */
_mem_size size
)
{ /* Body */
volatile uint_16 _PTR_ base16_ptr;
uint_32 result = FLASH_READY;
uint_16 temp_data = 0xFFFF;
uchar_ptr temp_data_ptr;
uchar byte_data_counter = 0;
/* get the offset in write word */
uint_16 offset = (uint_16)to_ptr & 0x0001;
/* test for flash write protect */
if (_29wsxxxN_test_lock_bits(dev_ptr) == LOCKED) {
return FLASH_WRITE_PROTECT;
}/* Endif */
if (dev_ptr->WIDTH == 16) {
(uint_16_ptr)temp_data_ptr = &temp_data;
/* if the start address != doesn't correspond with hardware, prepare
variables for 1st word write */
if(offset) {
/* Align pointer to writable address */
to_ptr -= offset;
/* jump over old data */
byte_data_counter = offset;
}
/* set the flash base address */
base16_ptr = (uint_16_ptr)dev_ptr->BASE_ADDR;
/* we have data to write */
while (size) {
/* read old data to write word */
temp_data = *(uint_16_ptr)to_ptr;
/* move data to write word byte by byte */
while( byte_data_counter < WS_BYTES_IN_WORD && size ) {
*(uchar_ptr)(temp_data_ptr+byte_data_counter) = *from_ptr++;
byte_data_counter++;
size--;
}
/* flash program */
_int_disable();
/* unlock flash */
*( base16_ptr + 0x555 ) = 0x00AA;
*( base16_ptr + 0x2AA ) = 0x0055;
/* Write command */
*( base16_ptr + 0x555 ) = 0x00A0;
/* write value */
*(uint_16 _PTR_)to_ptr = temp_data;
_int_enable();
/* test if the write operation complete */
result = _29wsxxxN_test_program_cmd(to_ptr, temp_data);
/* if write command failed, exit write command */
if(result != FLASH_READY) {
break;
}
byte_data_counter = 0;
temp_data = 0xFFFF;
to_ptr += WS_BYTES_IN_WORD;
}/* Endwhile */
}
else
result = FLASH_UNSUPPORTED_BUS_SIZE;
return result;
} /* Endbody */
void usb_filesystem_uninstall( USB_FILESYSTEM_STRUCT_PTR usb_fs_ptr)
{
int_32 error_code;
uint_32 mfs_status;
if (usb_fs_ptr == NULL) {
return;
}
_int_disable();
printf("\nDevice removed, starting device cleanup");
printf("\n--->Closing MFS");
if (usb_fs_ptr->FS_FD_PTR) {
error_code = fclose(usb_fs_ptr->FS_FD_PTR);
if ( error_code != IO_OK ) {
printf("\nError closing MFS device: 0x%X.", error_code);
}
}
printf("\n--->Uninstalling %s",usb_fs_ptr->FS_NAME);
if (usb_fs_ptr->FS_NAME) {
mfs_status = _io_mfs_uninstall(usb_fs_ptr->FS_NAME);
if ((mfs_status != MFS_NO_ERROR) && (mfs_status !=IO_DEVICE_DOES_NOT_EXIST)) {
printf("\nError while uninstalling MFS on device");
}
}
if (usb_fs_ptr->PM_FD_PTR != NULL) {
/* Close partition device */
printf("\n--->Closing partition");
error_code = fclose(usb_fs_ptr->PM_FD_PTR);
if ( error_code != IO_OK ) {
printf("\nError closing Partition device %s: 0x%X.", usb_fs_ptr->PM_NAME, error_code);
}
}
if (usb_fs_ptr->PM_NAME) {
/* Uninstall the partition manager */
printf("\n--->Uninstalling PM");
error_code = _io_part_mgr_uninstall(usb_fs_ptr->PM_NAME);
if (( error_code != IO_OK ) && (mfs_status !=IO_DEVICE_DOES_NOT_EXIST)) {
printf("\nError uninstalling Partition device %s: 0x%X.", usb_fs_ptr->PM_NAME, error_code);
}
}
/* USB mass storage link device */
if (usb_fs_ptr->DEV_FD_PTR) {
printf("\n--->Closing disk");
error_code = fclose(usb_fs_ptr->DEV_FD_PTR);
if ( error_code != IO_OK ) {
printf("\nError closing disk (0x%X)", error_code);
}
}
_int_enable();
if (usb_fs_ptr->DEV_NAME) {
printf("\n--->Closing USB MFS");
_io_dev_uninstall(usb_fs_ptr->DEV_NAME);
}
_mem_free(usb_fs_ptr);
}
/*!
* \private
*
* \brief Creates the lightweight log.
*
* \param[in] log_number Log number to create ( 1 through 15; 0 is reserved
* for kernel log).
* \param[in] max_size Maximum number of entries in the log.
* \param[in] flags LOG_OVERWRITE (when the log is full, write new entries
* over oldest ones), NULL (when the log is full, do not write entries; the default
* behavior).
* \param[in] log_header_ptr Pointer to lightweight log header.
*
* \return MQX_OK
* \return LOG_INVALID (log_number is out of range.)
* \return LOG_EXISTS (Lightweight log with log number log_number exists.)
* \return MQX_OUT_OF_MEMORY (MQX is out of memory.)
* \return MQX_CANNOT_CALL_FUNCTION_FROM_ISR (Function cannot be called from an ISR.)
* \return MQX_INVALID_COMPONENT_BASE (Data for the lightweight log component is
* not valid.)
*
* \see _lwlog_create
* \see _lwlog_create_at
* \see LWLOG_HEADER_STRUCT
*/
_mqx_uint _lwlog_create_internal
(
_mqx_uint log_number,
_mqx_uint max_size,
_mqx_uint flags,
LWLOG_HEADER_STRUCT_PTR log_header_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LWLOG_COMPONENT_STRUCT_PTR log_component_ptr;
LWLOG_ENTRY_STRUCT_PTR entry_ptr;
_mqx_uint i;
_mqx_uint result = MQX_OK;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (log_number >= LOG_MAXIMUM_NUMBER)
{
return (LOG_INVALID);
} /* Endif */
#endif
log_component_ptr = (LWLOG_COMPONENT_STRUCT_PTR) kernel_data->KERNEL_COMPONENTS[KERNEL_LWLOG];
if (log_component_ptr == NULL)
{
result = _lwlog_create_component();
log_component_ptr = (LWLOG_COMPONENT_STRUCT_PTR) kernel_data->KERNEL_COMPONENTS[KERNEL_LWLOG];
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (log_component_ptr == NULL)
{
return (result);
} /* Endif */
#endif
#if MQX_CHECK_ERRORS
}
else if (log_component_ptr->LOGS[log_number] != NULL)
{
return (LOG_EXISTS);
#endif
} /* Endif */
#if MQX_CHECK_VALIDITY
if (log_component_ptr->VALID != LWLOG_VALID)
{
return (MQX_INVALID_COMPONENT_BASE);
} /* Endif */
#endif
_mem_zero((void *) log_header_ptr, (_mem_size) sizeof(LWLOG_HEADER_STRUCT));
log_header_ptr->FLAGS = flags;
log_header_ptr->FLAGS |= LWLOG_ENABLED;
log_header_ptr->NUMBER = 1;
log_header_ptr->MAX_ENTRIES = max_size;
entry_ptr = &log_header_ptr->FIRST_ENTRY;
log_header_ptr->READ_PTR = entry_ptr;
log_header_ptr->OLDEST_PTR = entry_ptr;
max_size--;
for (i = 0; i < max_size; i++)
{
entry_ptr->NEXT_PTR = entry_ptr + 1;
entry_ptr++;
} /* Endfor */
log_header_ptr->WRITE_PTR = entry_ptr;
entry_ptr->NEXT_PTR = log_header_ptr->READ_PTR;
_int_disable();
#if MQX_CHECK_ERRORS
if (log_component_ptr->LOGS[log_number] != NULL)
{
_int_enable();
return (LOG_EXISTS);
} /* Endif */
#endif
log_component_ptr->LOGS[log_number] = log_header_ptr;
_int_enable();
return (result);
} /* Endbody */
_mqx_uint _mutex_init
(
/* [IN] - the address where the mutex is to be initialized */
register MUTEX_STRUCT_PTR mutex_ptr,
/* [IN] - Initialization parameters for the mutex */
register MUTEX_ATTR_STRUCT_PTR attr_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
MUTEX_COMPONENT_STRUCT_PTR mutex_component_ptr;
MUTEX_ATTR_STRUCT default_attr;
#if MQX_CHECK_ERRORS
MUTEX_STRUCT_PTR mutex_chk_ptr;
#endif
_mqx_uint result;
_GET_KERNEL_DATA(kernel_data);
if (attr_ptr == NULL) {
attr_ptr = &default_attr;
_mutatr_init(attr_ptr);
_KLOGE3(KLOG_mutex_init, mutex_ptr, NULL);
} else {
_KLOGE3(KLOG_mutex_init, mutex_ptr, attr_ptr);
} /* Endif */
#if MQX_CHECK_ERRORS
if (mutex_ptr == NULL) {
_KLOGX2(KLOG_mutex_init, MQX_EINVAL);
return(MQX_EINVAL);
} /* Endif */
#endif
#if MQX_CHECK_VALIDITY
if (attr_ptr->VALID != MUTEX_VALID) {
_KLOGX2(KLOG_mutex_init, MQX_EINVAL);
return(MQX_EINVAL);
} /* Endif */
#endif
mutex_component_ptr = (MUTEX_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_MUTEXES];
if (mutex_component_ptr == NULL) {
result = _mutex_create_component();
mutex_component_ptr = (MUTEX_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_MUTEXES];
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (mutex_component_ptr == NULL){
_KLOGX2(KLOG_mutex_init, result);
return(result);
} /* Endif */
#endif
} /* Endif */
#if MQX_CHECK_VALIDITY
if (mutex_component_ptr->VALID != MUTEX_VALID) {
_KLOGX2(KLOG_mutex_init, MQX_INVALID_COMPONENT_BASE);
return(MQX_INVALID_COMPONENT_BASE);
} /* Endif */
#endif
_int_disable();
#if MQX_CHECK_ERRORS
/* Check if mutex is already initialized */
mutex_chk_ptr = (MUTEX_STRUCT_PTR)
((pointer)mutex_component_ptr->MUTEXES.NEXT);
while (mutex_chk_ptr != (MUTEX_STRUCT_PTR)
((pointer)&mutex_component_ptr->MUTEXES))
{
if (mutex_chk_ptr == mutex_ptr) {
_int_enable();
_KLOGX2(KLOG_mutex_init, MQX_EINVAL);
return(MQX_EINVAL);
} /* Endif */
mutex_chk_ptr = (MUTEX_STRUCT_PTR)((pointer)mutex_chk_ptr->LINK.NEXT);
} /* Endif */
#endif
mutex_ptr->PROTOCOLS =
attr_ptr->SCHED_PROTOCOL | attr_ptr->WAIT_PROTOCOL;
mutex_ptr->VALID = MUTEX_VALID;
mutex_ptr->COUNT = attr_ptr->COUNT;
mutex_ptr->PRIORITY_CEILING = attr_ptr->PRIORITY_CEILING;
mutex_ptr->LOCK = 0;
mutex_ptr->BOOSTED = 0;
mutex_ptr->OWNER_TD = NULL;
_QUEUE_INIT(&mutex_ptr->WAITING_TASKS, 0);
_QUEUE_ENQUEUE(&mutex_component_ptr->MUTEXES, mutex_ptr);
_int_enable();
_KLOGX2(KLOG_mutex_init, MQX_EOK);
return(MQX_EOK);
} /* Endbody */
/*!
* \brief Sets the scheduling policy for a task or the system.
*
* \param[in] task_id One of the following:
* \n - Task on this processor for which to get info.
* \n - MQX_DEFAULT_TASK_ID (Set the policy for the processor.)
* \n - MQX_NULL_TASK_ID (Set the policy for the calling task.)
* \param[in] policy New scheduling policy; one of the following:
* \n - MQX_SCHED_FIFO
* \n - MQX_SCHED_RR
*
* \return Previous scheduling policy MQX_SCHED_FIFO or MQX_SCHED_RR (Success.)
* \return MAX_MQX_UINT (Failure.)
*
* \warning On failure, _task_set_error() is called to set the following task
* error codes:
* \n - MQX_SCHED_INVALID_POLICY (Policy is not one of the allowed policies.)
* \n - MQX_SCHED_INVALID_TASK_ID (Task_id is not a valid task on this processor.)
*
* \see _sched_get_policy
* \see _task_set_error
*/
_mqx_uint _sched_set_policy
(
_task_id task_id,
_mqx_uint policy
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data = NULL;
(void) kernel_data; /* suppress 'unused variable' warning */
TD_STRUCT_PTR td_ptr = NULL;
(void) td_ptr; /* suppress 'unused variable' warning */
_mqx_uint old_policy = MQX_SCHED_FIFO;
_GET_KERNEL_DATA(kernel_data);
_KLOGE3(KLOG_sched_set_policy, (_mqx_uint)task_id, policy);
#if MQX_HAS_TIME_SLICE
#if MQX_CHECK_ERRORS
if (! ((policy == MQX_SCHED_FIFO) || (policy == MQX_SCHED_RR)))
{
_task_set_error(MQX_SCHED_INVALID_POLICY);
_KLOGX3(KLOG_sched_set_policy, MAX_MQX_UINT, MQX_SCHED_INVALID_POLICY);
return(MAX_MQX_UINT);
} /* Endif */
#endif
/* Handle default case */
if (task_id == MQX_DEFAULT_TASK_ID)
{
old_policy = kernel_data->SCHED_POLICY;
kernel_data->SCHED_POLICY = policy;
}
else
{
td_ptr = (TD_STRUCT_PTR)_task_get_td(task_id);
if (td_ptr == NULL)
{
_task_set_error(MQX_SCHED_INVALID_TASK_ID);
_KLOGX3(KLOG_sched_set_policy, MAX_MQX_UINT, MQX_SCHED_INVALID_TASK_ID);
return(MAX_MQX_UINT);
} /* Endif */
if (td_ptr->FLAGS & MQX_TIME_SLICE_TASK)
{
old_policy = MQX_SCHED_RR;
}
else
{
old_policy = MQX_SCHED_FIFO;
} /* Endif */
_int_disable();
if (policy == MQX_SCHED_RR)
{
td_ptr->FLAGS |= MQX_TIME_SLICE_TASK;
}
else
{
td_ptr->FLAGS &= ~MQX_TIME_SLICE_TASK;
} /* Endif */
_int_enable();
} /* Endif */
#else
#if MQX_CHECK_ERRORS
if (policy != MQX_SCHED_FIFO)
{
_task_set_error(MQX_SCHED_INVALID_POLICY);
_KLOGX3(KLOG_sched_set_policy, MAX_MQX_UINT, MQX_SCHED_INVALID_POLICY);
return (MAX_MQX_UINT);
} /* Endif */
old_policy = MQX_SCHED_FIFO;
#endif
#endif
_KLOGX3(KLOG_sched_set_policy, old_policy, 0L);
return (old_policy);
} /* Endbody */
_mqx_uint _lwmsgq_receive
(
/* Handle to the queue */
pointer handle,
/* location of message to copy to */
_mqx_max_type_ptr message,
/* flags for blocking on empty */
_mqx_uint flags,
/* Timeout for receive if using ticks if 0, ignored */
_mqx_uint ticks,
/* Timeout if receive timout using tick struct must have flags set */
MQX_TICK_STRUCT_PTR tick_ptr
)
{/* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
TD_STRUCT_PTR td_ptr;
LWMSGQ_STRUCT_PTR q_ptr = (LWMSGQ_STRUCT_PTR)handle;
_mqx_uint i;
_mqx_max_type_ptr from_ptr;
_mqx_max_type_ptr to_ptr;
#if MQX_ENABLE_USER_MODE && MQX_ENABLE_USER_STDAPI
if (MQX_RUN_IN_USER_MODE) {
return _usr_lwmsgq_receive(handle, message, flags, ticks, tick_ptr);
}
#endif
/* Start CR 1944 */
_GET_KERNEL_DATA(kernel_data);
_KLOGE6(KLOG_lwmsgq_receive, handle, message, flags, ticks, tick_ptr);
/* End CR 1944 */
_int_disable();
#if MQX_CHECK_VALIDITY
if (q_ptr->VALID != LWMSGQ_VALID){
_int_enable();
/* Start CR 1944 */
_KLOGX2(KLOG_lwmsgq_send, LWMSGQ_INVALID);
/* End CR 1944 */
return LWMSGQ_INVALID;
} /* Endif */
#endif
if (LWMSGQ_IS_EMPTY(q_ptr)) {
if (flags & LWMSGQ_RECEIVE_BLOCK_ON_EMPTY) {
td_ptr = kernel_data->ACTIVE_PTR;
while (LWMSGQ_IS_EMPTY(q_ptr)) {
td_ptr->STATE = LWMSGQ_READ_BLOCKED;
td_ptr->INFO = (_mqx_uint)&q_ptr->WAITING_READERS;
_QUEUE_UNLINK(td_ptr);
_QUEUE_ENQUEUE(&q_ptr->WAITING_READERS, &td_ptr->AUX_QUEUE);
if (ticks || (flags & (LWMSGQ_TIMEOUT_UNTIL | LWMSGQ_TIMEOUT_FOR))){
if (ticks) {
PSP_ADD_TICKS_TO_TICK_STRUCT(&kernel_data->TIME, ticks,
&td_ptr->TIMEOUT);
} else if (flags & LWMSGQ_TIMEOUT_UNTIL){
td_ptr->TIMEOUT = *tick_ptr;
} else {
PSP_ADD_TICKS(tick_ptr, &kernel_data->TIME, &td_ptr->TIMEOUT);
} /* Endif */
_time_delay_internal(td_ptr);
if (td_ptr->INFO != 0) {
_int_enable();
/* Start CR 1944 */
_KLOGX2(KLOG_lwmsgq_receive, LWMSGQ_TIMEOUT);
/* End CR 1944 */
return LWMSGQ_TIMEOUT;
} /* Endif */
} else {
_sched_execute_scheduler_internal(); /* Let other tasks run */
} /* Endif */
} /* Endwhile */
} else {
_int_enable();
/* Start CR 1944 */
_KLOGX2(KLOG_lwmsgq_receive, LWMSGQ_EMPTY);
/* End CR 1944 */
return LWMSGQ_EMPTY;
} /* Endif */
}/* Endif */
from_ptr = q_ptr->MSG_READ_LOC;
to_ptr = message;
i = q_ptr->MSG_SIZE+1;
while (--i) {
*to_ptr++ = *from_ptr++;
} /* Endwhile */
q_ptr->MSG_READ_LOC += q_ptr->MSG_SIZE;
if (q_ptr->MSG_READ_LOC >= q_ptr->MSG_END_LOC) {
q_ptr->MSG_READ_LOC = q_ptr->MSG_START_LOC;
} /* Endif */
q_ptr->CURRENT_SIZE--;
if (! _QUEUE_IS_EMPTY(&q_ptr->WAITING_WRITERS)) {
_QUEUE_DEQUEUE(&q_ptr->WAITING_WRITERS, td_ptr);
_BACKUP_POINTER(td_ptr, TD_STRUCT, AUX_QUEUE);
td_ptr->INFO = 0; /* Signal that post is activating the task */
_TASK_READY(td_ptr, kernel_data);
_CHECK_RUN_SCHEDULER(); /* Let higher priority task run */
} /* Endif */
_int_enable();
/* Start CR 1944 */
_KLOGX2(KLOG_lwmsgq_receive, MQX_OK);
/* End CR 1944 */
return MQX_OK;
}/* Endbody */
_mqx_uint _mem_create_pool_internal
(
/* [IN] the start of the memory pool */
pointer start,
/* [IN] the end of the memory pool */
pointer end,
/* [IN] where to store the memory pool context info. */
MEMPOOL_STRUCT_PTR mem_pool_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
STOREBLOCK_STRUCT_PTR block_ptr;
STOREBLOCK_STRUCT_PTR end_block_ptr;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_VALIDITY
_INT_DISABLE();
if (kernel_data->MEM_COMP.VALID != MEMPOOL_VALID) {
/* The RTOS memory system has been corrupted */
_int_enable();
return(MQX_CORRUPT_MEMORY_SYSTEM);
} /* Endif */
_INT_ENABLE();
#endif
/* Align the start of the pool */
mem_pool_ptr->POOL_PTR = (STOREBLOCK_STRUCT_PTR)
_ALIGN_ADDR_TO_HIGHER_MEM(start);
/* Set the end of memory (aligned) */
mem_pool_ptr->POOL_LIMIT = (STOREBLOCK_STRUCT_PTR)
_ALIGN_ADDR_TO_LOWER_MEM(end);
#if MQX_CHECK_ERRORS
if ( (uchar_ptr)mem_pool_ptr->POOL_LIMIT <=
((uchar_ptr)mem_pool_ptr->POOL_PTR + MQX_MIN_MEMORY_POOL_SIZE) )
{
return MQX_MEM_POOL_TOO_SMALL;
} /* Endif */
#endif
block_ptr = (STOREBLOCK_STRUCT_PTR)mem_pool_ptr->POOL_PTR;
mem_pool_ptr->POOL_HIGHEST_MEMORY_USED = (pointer)block_ptr;
mem_pool_ptr->POOL_CHECK_POOL_PTR = (char _PTR_)mem_pool_ptr->POOL_PTR;
mem_pool_ptr->POOL_BLOCK_IN_ERROR = NULL;
/* Compute the pool size. */
mem_pool_ptr->POOL_SIZE = (_mem_size)((uchar_ptr)mem_pool_ptr->POOL_LIMIT -
(uchar_ptr)mem_pool_ptr->POOL_PTR);
/* Set up the first block as an idle block */
block_ptr->BLOCKSIZE = mem_pool_ptr->POOL_SIZE - MQX_MIN_MEMORY_STORAGE_SIZE;
block_ptr->USER_AREA = NULL;
block_ptr->PREVBLOCK = NULL;
block_ptr->NEXTBLOCK = NULL;
MARK_BLOCK_AS_FREE(block_ptr);
CALC_CHECKSUM(block_ptr);
mem_pool_ptr->POOL_FREE_LIST_PTR = block_ptr;
/*
** Set up last block as an in_use block, so that the _mem_free algorithm
** will work (block coalescing)
*/
end_block_ptr = (STOREBLOCK_STRUCT_PTR)
((uchar_ptr)block_ptr + block_ptr->BLOCKSIZE);
end_block_ptr->BLOCKSIZE = (_mem_size)(MQX_MIN_MEMORY_STORAGE_SIZE);
end_block_ptr->USER_AREA = 0;
end_block_ptr->PREVBLOCK = (struct storeblock_struct _PTR_)block_ptr;
end_block_ptr->NEXTBLOCK = NULL;
MARK_BLOCK_AS_USED(end_block_ptr, SYSTEM_TASK_ID(kernel_data));
CALC_CHECKSUM(end_block_ptr);
mem_pool_ptr->POOL_END_PTR = end_block_ptr;
/* Initialize the list of extensions to this pool */
_QUEUE_INIT(&mem_pool_ptr->EXT_LIST, 0);
mem_pool_ptr->VALID = MEMPOOL_VALID;
/* Protect the list of pools while adding new pool */
_lwsem_wait((LWSEM_STRUCT_PTR)&kernel_data->MEM_COMP.SEM);
_QUEUE_ENQUEUE(&kernel_data->MEM_COMP.POOLS, &mem_pool_ptr->LINK);
_lwsem_post((LWSEM_STRUCT_PTR)&kernel_data->MEM_COMP.SEM);
return MQX_OK;
} /* Endbody */
/*!
* \brief Tests the log component for consistency.
*
* \param[out] log_error_ptr Pointer to the log in error (NULL if no error is
* found).
*
* \return MQX_OK Log component data is valid (*Log_error_ptr is 0.).
* \return LOG_INVALID Information for a specific log is not valid
* (*log_error_ptr contains a log number of the first invalid log.).
* \return MQX_INVALID_COMPONENT_BASE Log component data is not valid
* (*log_error_ptr is NULL.).
*
* \warning Disables and enables interrupts
*
* \see _log_create_component
* \see _log_create
*/
_mqx_uint _log_test
(
_mqx_uint _PTR_ log_error_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LOG_COMPONENT_STRUCT_PTR log_component_ptr;
LOG_HEADER_STRUCT_PTR log_ptr;
_mqx_uint i;
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_log_test, log_error_ptr);
*log_error_ptr = 0;
log_component_ptr = (LOG_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_LOG];
if (log_component_ptr == NULL)
{
_KLOGX2(KLOG_log_test, MQX_OK);
return(MQX_OK);
} /* Endif */
if (log_component_ptr->VALID != LOG_VALID)
{
_KLOGX2(KLOG_log_test, MQX_INVALID_COMPONENT_BASE);
return(MQX_INVALID_COMPONENT_BASE);
} /* Endif */
_int_disable();
for (i = 0; i < LOG_MAXIMUM_NUMBER; i++)
{
log_ptr = log_component_ptr->LOGS[i];
if (log_ptr != NULL)
{
/* Verify the log pointers */
if ((log_ptr->LOG_END != &log_ptr->DATA[log_ptr->MAX]) ||
(log_ptr->LOG_START != &log_ptr->DATA[0]))
{
break;
} /* Endif */
if ((log_ptr->LOG_WRITE > log_ptr->LOG_END) ||
(log_ptr->LOG_NEXT > log_ptr->LOG_END) ||
(log_ptr->LOG_READ > log_ptr->LOG_END) ||
(log_ptr->LAST_LOG > log_ptr->LOG_END))
{
break;
} /* Endif */
if ((log_ptr->LOG_WRITE < log_ptr->LOG_START) ||
(log_ptr->LOG_READ < log_ptr->LOG_START) ||
(log_ptr->LAST_LOG < log_ptr->LOG_START))
{
break;
} /* Endif */
if ((log_ptr->LOG_NEXT != NULL) &&
(log_ptr->LOG_NEXT < log_ptr->LOG_START))
{
break;
} /* Endif */
} /* Endif */
} /* Endfor */
_int_enable();
if (i == LOG_MAXIMUM_NUMBER)
{
_KLOGX2(KLOG_log_test, MQX_OK);
return(MQX_OK);
} /* Endif */
*log_error_ptr = i;
_KLOGX3(KLOG_log_test, LOG_INVALID, i);
return(LOG_INVALID);
} /* Endbody */
void OS_Unlock(void)
{
_int_enable();
}
/*!
* \brief Reads the information in the lightweight log.
*
* <table>
* <tr>
* <td><b>read_type</b></td>
* <td><b>Returns this entry in the log:</b></td>
* </tr>
* <tr>
* <td>LOG_READ_NEWEST</td>
* <td>Newest.</td>
* </tr>
* <tr>
* <td>LOG_READ_NEXT</td>
* <td>Next one after the previous one read (must be used with LOG_READ_OLDEST).</td>
* </tr>
* <tr>
* <td>LOG_READ_OLDEST</td>
* <td>Oldest.</td>
* </tr>
* <tr>
* <td>LOG_READ_OLDEST_AND_DELETE</td>
* <td>Oldest and deletes it.</td>
* </tr>
* </table>
*
* \param[in] log_number Log number of a previously created lightweight log (if
* log_number is 0, kernel log is read).
* \param[in] read_type Type of read operation.
* \param[in] entry_ptr Pointer to where to write the lightweight log entry.
*
* \return MQX_OK
* \return LOG_DOES_NOT_EXIST (Log_number was not created.)
* \return LOG_ENTRY_NOT_AVAILABLE (Log entry is not available.)
* \return LOG_INVALID (Log_number is out of range.)
* \return LOG_INVALID_READ_TYPE (Read_type is not valid.)
* \return MQX_INVALID_POINTER (Entry_ptr is NULL.)
* \return MQX_INVALID_COMPONENT_HANDLE (Lightweight log component data is not valid.)
* \return MQX_COMPONENT_DOES_NOT_EXIST (Lightweight log component is not created.)
*
* \see _lwlog_create
* \see _lwlog_create_at
* \see _lwlog_write
* \see _klog_display
* \see LWLOG_ENTRY_STRUCT
*/
_mqx_uint _lwlog_read
(
_mqx_uint log_number,
_mqx_uint read_type,
LWLOG_ENTRY_STRUCT_PTR entry_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LWLOG_COMPONENT_STRUCT_PTR log_component_ptr;
LWLOG_HEADER_STRUCT_PTR log_header_ptr;
LWLOG_ENTRY_STRUCT_PTR log_ptr;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (log_number >= LOG_MAXIMUM_NUMBER)
{
return (LOG_INVALID);
} /* Endif */
if (entry_ptr == NULL)
{
return (MQX_INVALID_POINTER);
} /* Endif */
#endif
log_component_ptr = (LWLOG_COMPONENT_STRUCT_PTR) kernel_data->KERNEL_COMPONENTS[KERNEL_LWLOG];
#if MQX_CHECK_ERRORS
if (log_component_ptr == NULL)
{
return (MQX_COMPONENT_DOES_NOT_EXIST);
} /* Endif */
#endif
_int_disable();
#if MQX_CHECK_VALIDITY
if (log_component_ptr->VALID != LWLOG_VALID)
{
_int_enable();
return (MQX_INVALID_COMPONENT_HANDLE);
} /* Endif */
#endif
log_header_ptr = log_component_ptr->LOGS[log_number];
#if MQX_CHECK_ERRORS
if (log_header_ptr == NULL)
{
_int_enable();
return (LOG_DOES_NOT_EXIST);
} /* Endif */
#endif
if (!log_header_ptr->CURRENT_ENTRIES)
{
/* No data available */
_int_enable();
return (LOG_ENTRY_NOT_AVAILABLE);
} /* Endif */
if (read_type == LOG_READ_OLDEST_AND_DELETE)
{
log_header_ptr->CURRENT_ENTRIES--;
log_ptr = log_header_ptr->OLDEST_PTR;
log_header_ptr->OLDEST_PTR = log_ptr->NEXT_PTR;
log_header_ptr->READ_PTR = log_ptr->NEXT_PTR;
log_header_ptr->READS = 0;
}
else if (read_type == LOG_READ_OLDEST)
{
log_ptr = log_header_ptr->OLDEST_PTR;
log_header_ptr->READ_PTR = log_ptr->NEXT_PTR;
log_header_ptr->READS = 1;
}
else if (read_type == LOG_READ_NEXT)
{
log_ptr = log_header_ptr->READ_PTR;
if ((log_ptr == log_header_ptr->WRITE_PTR->NEXT_PTR) && (log_header_ptr->READS
>= log_header_ptr->CURRENT_ENTRIES))
{
_int_enable();
return (LOG_ENTRY_NOT_AVAILABLE);
} /* Endif */
log_header_ptr->READ_PTR = log_ptr->NEXT_PTR;
log_header_ptr->READS++;
}
else if (read_type == LOG_READ_NEWEST)
{
log_header_ptr->READS = log_header_ptr->CURRENT_ENTRIES;
log_ptr = log_header_ptr->WRITE_PTR;
#if MQX_CHECK_ERRORS
}
else
{
_int_enable();
return (LOG_INVALID_READ_TYPE);
#endif
} /* Endif */
*entry_ptr = *log_ptr;
_int_enable();
return (MQX_OK);
} /* Endbody */
/*!
* \brief Core mutex destroy function.
*
* This function destroys a core mutex.
*
* \param[in] mutex_ptr Pointer to core_mutex structure.
*
* \return MQX_COMPONENT_DOES_NOT_EXIST (Core mutex component not installed.)
* \return MQX_INVALID_PARAMETER (Wrong input parameter.)
* \return MQX_TASKQ_CREATE_FAILED (Failed to create a task queue.)
* \return COREMUTEX_OK (Success.)
*
* \see _core_mutex_create
* \see _core_mutex_create_at
*/
uint32_t _core_mutex_destroy( CORE_MUTEX_PTR mutex_ptr )
{
CORE_MUTEX_COMPONENT_PTR component_ptr = _core_mutext_get_component_ptr();
SEMA4_MemMapPtr sema4_ptr;
void *tq;
uint32_t dev_num, mutex_num, i;
#if MQX_CHECK_ERRORS
if (component_ptr == NULL) {
return MQX_COMPONENT_DOES_NOT_EXIST;
}
if (mutex_ptr==NULL) {
return MQX_INVALID_POINTER;
}
if (mutex_ptr->VALID != CORE_MUTEX_VALID) {
return MQX_INVALID_POINTER;
}
#endif
mutex_num = mutex_ptr->GATE_NUM;
/* figure out which device this mutex is associated with */
for (i=0;i<SEMA4_NUM_DEVICES;i++) {
sema4_ptr = _bsp_get_sema4_base_address(i);
if (&sema4_ptr->Gate[mutex_num] == mutex_ptr->GATE_PTR) {
dev_num = i;
break;
}
}
_int_disable();
#if MQX_CHECK_ERRORS
if (component_ptr->DEVICE[dev_num].MUTEX_PTR[mutex_num] == NULL) {
_int_enable();
return MQX_COMPONENT_DOES_NOT_EXIST;
}
#endif
component_ptr->DEVICE[dev_num].MUTEX_PTR[mutex_num] = NULL;
if (_psp_core_num()==0) {
component_ptr->DEVICE[dev_num].SEMA4_PTR->CP0INE &= ~(1 << (SEMA4_NUM_GATES - 1 - idx[mutex_num])); /* ~(1 << (SEMA4_NUM_GATES-1-mutex_num)); */
} else {
component_ptr->DEVICE[dev_num].SEMA4_PTR->CP1INE &= ~(1 << (SEMA4_NUM_GATES - 1 - idx[mutex_num])); /* ~(1 << (SEMA4_NUM_GATES-1-mutex_num)); */
}
tq = mutex_ptr->WAIT_Q;
mutex_ptr->VALID=0;
_int_enable();
if (component_ptr->DEVICE[dev_num].ALLOCED & (1<<mutex_num)) {
component_ptr->DEVICE[dev_num].ALLOCED &= ~(1<<mutex_num);
} else {
mutex_ptr=NULL;
}
_taskq_destroy(tq);
if (mutex_ptr) {
_mem_free(mutex_ptr);
}
return COREMUTEX_OK;
}
/*!
* \brief Tests the lightweight log component for consistency.
*
* \param[out] log_error_ptr Pointer to the lightweight log if error is found (NULL
* if no error is found).
*
* \return MQX_OK Lightweight log component data is valid (Log_error_ptr is NULL.).
* \return LOG_INVALID Information for a specific lightweight log is not valid
* (Log_error_ptr contains log number of the first invalid lightweight log.).
* \return MQX_INVALID_POINTER Log_error_ptr is NULL.
* \return MQX_INVALID_COMPONENT_BASE Lightweight log component data is not valid
* (Log_error_ptr is NULL.).
*
* \see _lwlog_create_component
* \see _lwlog_create
* \see _lwlog_create_at
*/
_mqx_uint _lwlog_test
(
_mqx_uint *log_error_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LWLOG_COMPONENT_STRUCT_PTR log_component_ptr;
LWLOG_HEADER_STRUCT_PTR log_header_ptr;
LWLOG_ENTRY_STRUCT_PTR entry_ptr;
unsigned char *min_ptr;
unsigned char *max_ptr;
_mqx_uint i, j;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if ((void *) log_error_ptr == NULL)
{
return MQX_INVALID_POINTER;
} /* Endif */
#endif
*log_error_ptr = 0;
log_component_ptr = (LWLOG_COMPONENT_STRUCT_PTR) kernel_data->KERNEL_COMPONENTS[KERNEL_LWLOG];
if (log_component_ptr == NULL)
{
return (MQX_OK);
} /* Endif */
_int_disable();
#if MQX_CHECK_VALIDITY
if (log_component_ptr->VALID != LWLOG_VALID)
{
_int_enable();
return (MQX_INVALID_COMPONENT_BASE);
} /* Endif */
#endif
for (i = 0; i < LOG_MAXIMUM_NUMBER; i++)
{
log_header_ptr = log_component_ptr->LOGS[i];
if (log_header_ptr != NULL)
{
/* Verify the log pointers */
min_ptr = (unsigned char *) log_header_ptr + sizeof(LWLOG_HEADER_STRUCT_PTR);
max_ptr = min_ptr + sizeof(LWLOG_ENTRY_STRUCT) * log_header_ptr->MAX_ENTRIES;
if (((unsigned char *) log_header_ptr->READ_PTR < min_ptr) || ((unsigned char *) log_header_ptr->READ_PTR >= max_ptr)
|| ((unsigned char *) log_header_ptr->WRITE_PTR < min_ptr)
|| ((unsigned char *) log_header_ptr->WRITE_PTR >= max_ptr)
|| ((unsigned char *) log_header_ptr->OLDEST_PTR < min_ptr)
|| ((unsigned char *) log_header_ptr->OLDEST_PTR >= max_ptr))
{
_int_enable();
*log_error_ptr = i;
return (LOG_INVALID);
} /* Endif */
/* Check each entry in the log */
entry_ptr = &log_header_ptr->FIRST_ENTRY;
j = log_header_ptr->MAX_ENTRIES;
while (entry_ptr->NEXT_PTR && j)
{
entry_ptr = entry_ptr->NEXT_PTR;
--j;
if (((unsigned char *) entry_ptr < min_ptr) || ((unsigned char *) entry_ptr >= max_ptr))
{
_int_enable();
*log_error_ptr = i;
return (LOG_INVALID);
} /* Endif */
} /* Endwhile */
} /* Endif */
} /* Endfor */
_int_enable();
return (MQX_OK);
} /* Endbody */
/*!
* \brief Allocates a message from the private message pool.
*
* The size of the message is determined by the message size that a task
* specified when it called _msgpool_create(). The message is a resource of the
* task until the task either frees it (_msg_free()) or puts it on a message
* queue (_msgq_send() family of functions.)
*
* \param[in] pool A pool ID from _msgpool_create().
*
* \return Pointer to a message (Success.)
* \return NULL (Failure.)
*
* \warning On failure, calls _task_set_error() to set one the following task
* error codes:
* \li MQX_COMPONENT_DOES_NOT_EXIST (Message component is not created.)
* \li MSGPOOL_INVALID_POOL_ID (Pool_id is not valid.)
* \li MSGPOOL_OUT_OF_MESSAGES (All the messages in the pool are allocated.)
* \li Task error codes from _mem_alloc_system() (If MQX needs to grow the pool.)
*
* \see _msg_alloc_system
* \see _msg_free
* \see _msgpool_create
* \see _msgpool_destroy
* \see _task_set_error
* \see _mem_alloc
* \see _mem_alloc_from
* \see _mem_alloc_system
* \see _mem_alloc_system_from
* \see _mem_alloc_system_zero
* \see _mem_alloc_system_zero_from
* \see _mem_alloc_zero
* \see _mem_alloc_zero_from
* \see _mem_alloc_align
* \see _mem_alloc_align_from
* \see _mem_alloc_at
* \see MESSAGE_HEADER_STRUCT
*/
void *_msg_alloc
(
_pool_id pool
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
#if MQX_CHECK_ERRORS
MSG_COMPONENT_STRUCT_PTR msg_component_ptr;
#endif
register INTERNAL_MESSAGE_STRUCT_PTR imsg_ptr;
register MESSAGE_HEADER_STRUCT_PTR message_ptr;
register MSGPOOL_STRUCT_PTR msgpool_ptr;
uint16_t grow_number;
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_msg_alloc, pool);
#if MQX_CHECK_ERRORS
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
if (msg_component_ptr == NULL)
{
_task_set_error(MQX_COMPONENT_DOES_NOT_EXIST);
_KLOGX3(KLOG_msg_alloc, NULL, MQX_COMPONENT_DOES_NOT_EXIST);
return(NULL);
} /* Endif */
#endif
message_ptr = NULL;
msgpool_ptr = (MSGPOOL_STRUCT_PTR)pool;
#if MQX_CHECK_VALIDITY || MQX_CHECK_ERRORS
if (
#if MQX_CHECK_VALIDITY
(msgpool_ptr->VALID != MSG_VALID)
#if MQX_CHECK_ERRORS
||
#endif
#endif
#if MQX_CHECK_ERRORS
(msgpool_ptr->MSGPOOL_TYPE != MSG_POOL)
#endif
)
{
_task_set_error(MSGPOOL_INVALID_POOL_ID);
_KLOGX3(KLOG_msg_alloc, message_ptr, MSGPOOL_INVALID_POOL_ID);
return (message_ptr);
} /* Endif */
#endif
if ( (msgpool_ptr->SIZE == 0) && (msgpool_ptr->GROW_NUMBER) &&
( (msgpool_ptr->MAX < msgpool_ptr->GROW_LIMIT) ||
(msgpool_ptr->GROW_LIMIT == 0) ) )
{
/* Attempt to add elements to the pool */
grow_number = msgpool_ptr->GROW_NUMBER;
if (grow_number > (uint16_t)(msgpool_ptr->GROW_LIMIT - msgpool_ptr->MAX))
{
grow_number = msgpool_ptr->GROW_LIMIT - msgpool_ptr->MAX;
} /* Endif */
_msgpool_add_internal(msgpool_ptr, grow_number);
} /* Endif */
_INT_DISABLE();
imsg_ptr = msgpool_ptr->MSG_FREE_LIST_PTR;
if (imsg_ptr == NULL)
{
_int_enable();
_task_set_error(MSGPOOL_OUT_OF_MESSAGES);
_KLOGX3(KLOG_msg_alloc, message_ptr, MSGPOOL_OUT_OF_MESSAGES);
return((void *)message_ptr);
} /* Endif */
msgpool_ptr->MSG_FREE_LIST_PTR = imsg_ptr->NEXT;
--msgpool_ptr->SIZE;
_INT_ENABLE();
imsg_ptr->FREE = FALSE;
imsg_ptr->QUEUED = FALSE;
if (kernel_data->IN_ISR)
{
imsg_ptr->TD_PTR = NULL;
}
else
{
imsg_ptr->TD_PTR = kernel_data->ACTIVE_PTR;
} /* Endif */
message_ptr = (MESSAGE_HEADER_STRUCT_PTR)&imsg_ptr->MESSAGE;
message_ptr->TARGET_QID = MSGQ_NULL_QUEUE_ID;
message_ptr->SOURCE_QID = MSGQ_NULL_QUEUE_ID;
message_ptr->SIZE = msgpool_ptr->MESSAGE_SIZE;
message_ptr->CONTROL = MSG_HDR_ENDIAN | MSG_DATA_ENDIAN;
_KLOGX3(KLOG_msg_alloc, message_ptr, MQX_OK);
return (void *)message_ptr;
} /* Endbody */
_mqx_uint _mem_free_part
(
/* [IN] the address of the memory block whose size is to change */
pointer mem_ptr,
/* [IN] the new size for the block */
_mem_size requested_size
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
STOREBLOCK_STRUCT_PTR block_ptr;
STOREBLOCK_STRUCT_PTR prev_block_ptr;
STOREBLOCK_STRUCT_PTR next_block_ptr;
STOREBLOCK_STRUCT_PTR new_block_ptr;
_mem_size size;
_mem_size block_size;
_mem_size new_block_size;
_mqx_uint result_code;
_GET_KERNEL_DATA(kernel_data);
_KLOGE3(KLOG_mem_free_part, mem_ptr, requested_size);
#if MQX_CHECK_ERRORS
/* Make sure a correct pointer was passed in. */
if (mem_ptr == NULL) {
_task_set_error(MQX_INVALID_POINTER);
_KLOGX2(KLOG_mem_free_part, MQX_INVALID_POINTER);
return(MQX_INVALID_POINTER);
} /* Endif */
#endif
/* Verify the block size */
block_ptr = GET_MEMBLOCK_PTR(mem_ptr);
#if MQX_CHECK_ERRORS
if (! _MEMORY_ALIGNED(block_ptr)) {
_task_set_error(MQX_INVALID_POINTER);
_KLOGX2(KLOG_mem_free_part, MQX_INVALID_POINTER);
return(MQX_INVALID_POINTER);
} /* Endif */
if ( (block_ptr->BLOCKSIZE < MQX_MIN_MEMORY_STORAGE_SIZE) ||
BLOCK_IS_FREE(block_ptr) )
{
_task_set_error(MQX_INVALID_POINTER);
kernel_data->KD_POOL.POOL_BLOCK_IN_ERROR = block_ptr;
_KLOGX3(KLOG_mem_free_part, MQX_INVALID_POINTER, block_ptr);
return(MQX_INVALID_POINTER);
} /* Endif */
#endif
#if MQX_CHECK_VALIDITY
_int_disable();
if ( ! VALID_CHECKSUM(block_ptr) ) {
_int_enable();
_task_set_error(MQX_INVALID_CHECKSUM);
kernel_data->KD_POOL.POOL_BLOCK_IN_ERROR = block_ptr;
_KLOGX3(KLOG_mem_free_part, MQX_INVALID_CHECKSUM, block_ptr);
return(MQX_INVALID_CHECKSUM);
} /* Endif */
_int_enable();
#endif
/* Walk through the memory resources of the task descriptor.
* Two pointers are maintained, one to the current block
* and one to the previous block.
*/
next_block_ptr = (STOREBLOCK_STRUCT_PTR)
kernel_data->ACTIVE_PTR->MEMORY_RESOURCE_LIST;
prev_block_ptr = GET_MEMBLOCK_PTR(&kernel_data->ACTIVE_PTR->MEMORY_RESOURCE_LIST);
/* Scan the task's memory resource list searching for the block to
* free, Stop when the current pointer is equal to the block to free
* or the end of the list is reached.
*/
while ( next_block_ptr &&
((pointer)next_block_ptr != mem_ptr) ) {
/* The block is not found, and the end of the list has not been
* reached, so move down the list.
*/
prev_block_ptr = GET_MEMBLOCK_PTR(next_block_ptr);
next_block_ptr = (STOREBLOCK_STRUCT_PTR)prev_block_ptr->NEXTBLOCK;
} /* Endwhile */
#if MQX_CHECK_ERRORS
if ( next_block_ptr == NULL ) {
/* The specified block does not belong to the calling task. */
_task_set_error(MQX_NOT_RESOURCE_OWNER);
_KLOGX2(KLOG_mem_free_part, MQX_NOT_RESOURCE_OWNER);
return(MQX_NOT_RESOURCE_OWNER);
} /* Endif */
#endif
/* determine the size of the block. */
block_size = block_ptr->BLOCKSIZE;
size = requested_size + (_mem_size)FIELD_OFFSET(STOREBLOCK_STRUCT,USER_AREA);
if (size < MQX_MIN_MEMORY_STORAGE_SIZE) {
size = MQX_MIN_MEMORY_STORAGE_SIZE;
} /* Endif */
_MEMORY_ALIGN_VAL_LARGER(size);
#if MQX_CHECK_ERRORS
/* Verify that the size parameter is within range of the block size. */
if (size <= block_size) {
#endif
/* Adjust the size to allow for the overhead and force alignment */
/* Compute the size of the new_ block that would be created. */
new_block_size = block_size - size;
/* Decide if it worthwile to split the block. If the amount of space
* returned is not at least twice the size of the block overhead,
* then dont bother.
*/
if (new_block_size >= (2*MQX_MIN_MEMORY_STORAGE_SIZE) ) {
/* Create an 'inuse' block */
new_block_ptr =
(STOREBLOCK_STRUCT_PTR)((char _PTR_)block_ptr + size);
new_block_ptr->BLOCKSIZE = new_block_size;
PREV_PHYS(new_block_ptr) = block_ptr;
new_block_ptr->TASK_NUMBER = block_ptr->TASK_NUMBER;
new_block_ptr->MEM_POOL_PTR = block_ptr->MEM_POOL_PTR;
CALC_CHECKSUM(new_block_ptr);
_int_disable();
/* Split the block */
block_ptr->BLOCKSIZE = size;
CALC_CHECKSUM(block_ptr);
/* make sure right physical neighbour knows about it */
block_ptr = NEXT_PHYS(new_block_ptr);
PREV_PHYS(block_ptr) = new_block_ptr;
CALC_CHECKSUM(block_ptr);
/* Link the new block onto the requestor's task descriptor. */
new_block_ptr->NEXTBLOCK = kernel_data->ACTIVE_PTR->MEMORY_RESOURCE_LIST;
kernel_data->ACTIVE_PTR->MEMORY_RESOURCE_LIST =
(char _PTR_)(&new_block_ptr->USER_AREA);
_int_enable();
result_code = _mem_free((pointer)&new_block_ptr->USER_AREA);
} else {
result_code = MQX_OK;
} /* Endif */
#if MQX_CHECK_ERRORS
} else {
result_code = MQX_INVALID_SIZE;
} /* Endif */
#endif
#if MQX_CHECK_ERRORS
if ( result_code != MQX_OK ) {
_task_set_error(result_code);
} /* Endif */
#endif
_KLOGX2(KLOG_mem_free_part, result_code);
return (result_code);
} /* Endbody */
/*!
* \private
*
* \brief This is internal function used by a task to wait for a specified event.
*
* \param[in] event_ptr Read only. Pointer to the lightweight event.
* \param[in] bit_mask Bit mask. Each set bit represents an event bit
* to wait for.
* \param[in] all TRUE (wait for all bits in bit_mask to be set),
* FALSE (wait for any bit in bit_mask to be set).
* \param[in] tick_ptr Pointer to the maximum number of ticks to wait
* for the events to be set. If the value is NULL, then the timeout will be infinite.
* \param[in] ticks_are_absolute TRUE (ticks represents absolute time), FALSE
* (ticks represents relative time).
*
* \return MQX_OK
* \return LWEVENT_WAIT_TIMEOUT (The time elapsed before an event signalled.)
* \return MQX_LWEVENT_INVALID (Lightweight event is no longer valid or was never valid.)
* \return MQX_CANNOT_CALL_FUNCTION_FROM_ISR (Function cannot be called from an ISR.)
*
* \see _lwevent_wait_for
* \see _usr_lwevent_wait_for
* \see _lwevent_wait_until
* \see _usr_lwevent_wait_until
* \see _lwevent_wait_ticks
* \see _usr_lwevent_wait_ticks
* \see LWEVENT_STRUCT
* \see MQX_TICK_STRUCT
*/
_mqx_uint _lwevent_wait_internal
(
LWEVENT_STRUCT_PTR event_ptr,
_mqx_uint bit_mask,
bool all,
MQX_TICK_STRUCT_PTR tick_ptr,
bool ticks_are_absolute
)
{
KERNEL_DATA_STRUCT_PTR kernel_data;
TD_STRUCT_PTR td_ptr;
_mqx_uint result;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (kernel_data->IN_ISR)
{
_KLOGX2(KLOG_lwevent_wait_internal, MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
return (MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
} /* Endif */
#endif
result = MQX_OK;
td_ptr = kernel_data->ACTIVE_PTR;
_INT_DISABLE();
#if MQX_CHECK_VALIDITY
if (event_ptr->VALID != LWEVENT_VALID)
{
_int_enable();
return (MQX_LWEVENT_INVALID);
} /* Endif */
#endif
if ( (all && (event_ptr->VALUE & bit_mask) == bit_mask)
|| (!all && (event_ptr->VALUE & bit_mask)))
{
/* store information about which bits caused task to be unblocked */
td_ptr->LWEVENT_BITS = event_ptr->VALUE & bit_mask;
/* clear used automatic events */
event_ptr->VALUE &= ~(event_ptr->AUTO & bit_mask);
_INT_ENABLE();
return (result);
} /* Endif */
/* Must wait for a event to become available */
td_ptr->LWEVENT_BITS = bit_mask;
if (all)
{
td_ptr->FLAGS |= TASK_LWEVENT_ALL_BITS_WANTED;
}
else
{
td_ptr->FLAGS &= ~TASK_LWEVENT_ALL_BITS_WANTED;
} /* Endif */
/* Enqueue at end */
_QUEUE_ENQUEUE(&event_ptr->WAITING_TASKS, &td_ptr->AUX_QUEUE);
/* Now put the task to sleep */
td_ptr->STATE = LWEVENT_BLOCKED;
td_ptr->INFO = (_mqx_uint) &event_ptr->WAITING_TASKS;
if (tick_ptr)
{
if (ticks_are_absolute)
{
_time_delay_until(tick_ptr);
}
else
{
_time_delay_for(tick_ptr);
} /* Endif */
if (td_ptr->INFO)
{
/* Must have timed out */
/*_QUEUE_REMOVE(&event_ptr->WAITING_TASKS, &td_ptr->AUX_QUEUE);*/
result = LWEVENT_WAIT_TIMEOUT;
} /* Endif */
}
else
{
_task_block();
} /* Endif */
#if MQX_COMPONENT_DESTRUCTION
if (event_ptr->VALID == 0)
{ /* We've been deleted */
result = MQX_LWEVENT_INVALID;
} /* Endif */
#endif
_INT_ENABLE();
return (result);
}
/*FUNCTION*-------------------------------------------------------------------
*
* Function Name : mcf51xx_write_sector
* Returned Value : true if success, or false
* Comments :
* Performs a write into flash memory
*
*END*----------------------------------------------------------------------*/
boolean mcf51xx_write_sector(IO_FLASHX_STRUCT_PTR flash_ptr,
uchar_ptr from_ptr, uchar_ptr to_ptr, _mem_size size )
{
#define BYTES_IN_WORD 4
VMCF51XX_FTSR_STRUCT_PTR ftsr_ptr;
VMCF51XX_PMC_STRUCT_PTR pmc_ptr;
INTERNAL_51XX_STRUCT_PTR dev_spec_struct_ptr;
int (*RunInRAM)( uchar_ptr );
uint_32 temp, temp_data = 0xFFFFFFFF;
uchar_ptr temp_data_ptr;
uchar byte_data_counter = 0;
/* get the offset in write word */
uint_32 offset = (uint_32)to_ptr & 0x00000003;;
(uint_32_ptr)temp_data_ptr = &temp_data;
dev_spec_struct_ptr = flash_ptr->DEVICE_SPECIFIC_DATA;
/* select the proper ramcode function */
*RunInRAM = (int(*)( uchar_ptr ))dev_spec_struct_ptr->flash_execute_code_ptr;
/* get the pointer to cfm registers structure */
ftsr_ptr = (VMCF51XX_FTSR_STRUCT_PTR)dev_spec_struct_ptr->ftsr_ptr;
/* get the pointer to pmc registers structure */
pmc_ptr = _bsp_get_pmc_address();
/* Clear any errors */
_int_disable();
ftsr_ptr->FSTAT = (MCF51XX_FTSR_FSTAT_FPVIOL | MCF51XX_FTSR_FSTAT_FACCERR);
/* if the start address != doesn't correspond with hardware, prepare
variables for 1st word write */
if(offset){
/* Align pointer to writable address */
to_ptr -= offset;
/* jump over old data */
byte_data_counter = offset;
}
/* while are some data to write */
while(size){
/* move data to write word */
while( byte_data_counter < BYTES_IN_WORD && size ){
*(temp_data_ptr+byte_data_counter) = *from_ptr++;
byte_data_counter++;
size--;
}
/* test the LVDF flag - if 1, we need to write data in 2 steps */
if( pmc_ptr->SPMSC1 & MCF51XX_PMC_SPMSC1_LVDF) {
/* write odd bytes */
(*(vuint_32 *)(to_ptr)) = temp_data | 0x00FF00FF;
/* write command to CFMCMD */
ftsr_ptr->FCMD = MCF51XX_FTSR_FCMD_BURST_PROGRAM;
/* run command and wait for it to finish (must execute from RAM) */
temp = _psp_get_sr();
_psp_set_sr(temp | 0x0700);
RunInRAM( (volatile uchar_ptr)&ftsr_ptr->FSTAT );
_psp_set_sr(temp);
/* write even bytes */
(*(vuint_32 *)(to_ptr)) = temp_data | 0xFF00FF00;
/* write command to CFMCMD */
ftsr_ptr->FCMD = MCF51XX_FTSR_FCMD_BURST_PROGRAM;
/* run command and wait for it to finish (must execute from RAM) */
temp = _psp_get_sr();
_psp_set_sr(temp | 0x0700);
RunInRAM( (volatile uchar_ptr)&ftsr_ptr->FSTAT );
_psp_set_sr(temp);
}
else {
/* move write data to register */
(*(vuint_32 *)(to_ptr)) = temp_data;
/* write command to CFMCMD */
ftsr_ptr->FCMD = MCF51XX_FTSR_FCMD_BURST_PROGRAM;
/* run command and wait for it to finish (must execute from RAM) */
temp = _psp_get_sr();
_psp_set_sr(temp | 0x0700);
RunInRAM( (volatile uchar_ptr)&ftsr_ptr->FSTAT );
_psp_set_sr(temp);
}
/* Check for Errors */
if (ftsr_ptr->FSTAT & (MCF51XX_FTSR_FSTAT_FPVIOL | MCF51XX_FTSR_FSTAT_FACCERR)) {
_int_enable();
return (FALSE);
}
/* init variables for next loop */
to_ptr += BYTES_IN_WORD;
byte_data_counter = 0;
temp_data = 0xFFFFFFFF;
}
_int_enable();
return (TRUE);
}
/*!
* \private
*
* \brief Used by a task to create an instance of a lightweight event.
*
* \param[in] event_ptr Pointer representing location of the event.
* \param[in] flags Flags for the light weight event.
* \param[in] user User mode
*
* \return MQX_OK
* \return MQX_EINVAL (lwevent is already initialized.)
* \return MQX_LWEVENT_INVALID (In case of user mode, MQX tries to access
* a lwevent with inappropriate access rights.)
*
* \see _lwevent_create
* \see LWEVENT_STRUCT
*/
_mqx_uint _lwevent_create_internal
(
LWEVENT_STRUCT_PTR event_ptr,
_mqx_uint flags,
bool user
)
{
KERNEL_DATA_STRUCT_PTR kernel_data;
LWEVENT_STRUCT_PTR event_chk_ptr;
#if MQX_ENABLE_USER_MODE
if (user && !_psp_mem_check_access_mask((uint32_t)event_ptr,
sizeof(LWEVENT_STRUCT),
MPU_UM_R, MPU_UM_RW) )
{
return MQX_LWEVENT_INVALID;
}
#endif
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_lwevent_create, event_ptr);
_QUEUE_INIT(&event_ptr->WAITING_TASKS, 0);
event_ptr->VALUE = 0;
event_ptr->FLAGS = flags;
if (flags & LWEVENT_AUTO_CLEAR)
event_ptr->AUTO = ~0;
else
event_ptr->AUTO = 0;
_int_disable();
#if MQX_ENABLE_USER_MODE
if (user)
{
if (kernel_data->USR_LWEVENTS.NEXT == NULL)
{
/* Initialize the light weight event queue */
_QUEUE_INIT(&kernel_data->USR_LWEVENTS, 0);
}
}
else
#endif
{
if (kernel_data->LWEVENTS.NEXT == NULL)
{
/* Initialize the light weight event queue */
_QUEUE_INIT(&kernel_data->LWEVENTS, 0);
}
}
event_ptr->VALID = LWEVENT_VALID;
#if MQX_CHECK_ERRORS
/* Check if lwevent is already initialized */
#if MQX_ENABLE_USER_MODE
if (user)
{
event_chk_ptr = (LWEVENT_STRUCT_PTR)((void *)kernel_data->USR_LWEVENTS.NEXT);
while (event_chk_ptr != (LWEVENT_STRUCT_PTR)((void *)&kernel_data->USR_LWEVENTS))
{
if (event_chk_ptr == event_ptr)
{
_int_enable();
_KLOGX2(KLOG_lwevent_create, MQX_EINVAL);
return(MQX_EINVAL);
}
event_chk_ptr = (LWEVENT_STRUCT_PTR)((void *)event_chk_ptr->LINK.NEXT);
}
}
else
#endif
{
event_chk_ptr = (LWEVENT_STRUCT_PTR) ((void *) kernel_data->LWEVENTS.NEXT);
while (event_chk_ptr != (LWEVENT_STRUCT_PTR) ((void *) &kernel_data->LWEVENTS))
{
if (event_chk_ptr == event_ptr)
{
_int_enable();
_KLOGX2(KLOG_lwevent_create, MQX_EINVAL);
return (MQX_EINVAL);
}
event_chk_ptr = (LWEVENT_STRUCT_PTR) ((void *) event_chk_ptr->LINK.NEXT);
}
}
#endif
#if MQX_ENABLE_USER_MODE
if (user)
{
_QUEUE_ENQUEUE(&kernel_data->USR_LWEVENTS, &event_ptr->LINK);
}
else
#endif
{
_QUEUE_ENQUEUE(&kernel_data->LWEVENTS, &event_ptr->LINK);
}
_int_enable();
_KLOGX2(KLOG_lwevent_create, MQX_OK);
return (MQX_OK);
}
/*!
* \brief Destroys the private message pool.
*
* Any task can destroy the private message pool as long as all its messages have
* been freed.
*
* \param[in] pool_id Pool to destroy.
*
* \return MQX_OK
* \return MQX_COMPONENT_DOES_NOT_EXIST (Message component is not created.)
* \return MSGPOOL_INVALID_POOL_ID (Pool_id does not represent a message pool
* that was created by _msgpool_create().)
* \return MSGPOOL_ALL_MESSAGES_NOT_FREE (All messages in the message pool have
* not been freed.)
*
* \warning Calls _mem_free(), which on error sets the task error code.
*
* \see _msgpool_create
* \see _msg_free
* \see _msg_alloc
* \see _mem_free
*/
_mqx_uint _msgpool_destroy
(
_pool_id pool_id
)
{ /* Body */
#if MQX_KERNEL_LOGGING || MQX_CHECK_ERRORS
KERNEL_DATA_STRUCT_PTR kernel_data;
#endif
#if MQX_CHECK_ERRORS
MSG_COMPONENT_STRUCT_PTR msg_component_ptr;
#endif
MSGPOOL_STRUCT_PTR msgpool_ptr;
MSGPOOL_BLOCK_STRUCT_PTR msgpool_block_ptr;
MSGPOOL_BLOCK_STRUCT_PTR next_block_ptr;
#if MQX_KERNEL_LOGGING || MQX_CHECK_ERRORS
_GET_KERNEL_DATA(kernel_data);
#endif
_KLOGE2(KLOG_msgpool_destroy, pool_id);
#if MQX_CHECK_ERRORS
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
if (msg_component_ptr == NULL)
{
_KLOGX2(KLOG_msgpool_destroy, MQX_COMPONENT_DOES_NOT_EXIST);
return MQX_COMPONENT_DOES_NOT_EXIST;
} /* Endif */
#endif
msgpool_ptr = (MSGPOOL_STRUCT_PTR)pool_id;
#if MQX_CHECK_VALIDITY
if ( msgpool_ptr->VALID != MSG_VALID )
{
_KLOGX2(KLOG_msgpool_destroy, MSGPOOL_INVALID_POOL_ID);
return MSGPOOL_INVALID_POOL_ID;
} /* Endif */
#endif
_int_disable();
if (msgpool_ptr->SIZE == msgpool_ptr->MAX)
{
/* All messages currently returned, lets delete them */
msgpool_ptr->SIZE = 0;
msgpool_ptr->GROW_NUMBER = 0;
_int_enable();
msgpool_block_ptr = msgpool_ptr->MSGPOOL_BLOCK_PTR;
while (msgpool_block_ptr != NULL)
{
next_block_ptr = msgpool_block_ptr->NEXT_BLOCK_PTR;
_mem_free((void *)msgpool_block_ptr);
msgpool_block_ptr = next_block_ptr;
} /* Endwhile */
msgpool_ptr->MSGPOOL_BLOCK_PTR = NULL;
msgpool_ptr->VALID = 0;
msgpool_ptr->MSGPOOL_TYPE = 0;
_KLOGX2(KLOG_msgpool_destroy, MQX_OK);
return MQX_OK;
}
else
{
_int_enable();
_KLOGX2(KLOG_msgpool_destroy, MSGPOOL_ALL_MESSAGES_NOT_FREE);
return MSGPOOL_ALL_MESSAGES_NOT_FREE;
} /* Endif */
} /* Endbody */
/*!
* \brief Tests the event component for validity and consistency.
*
* \param[out] event_error_ptr Pointer to the lightweight event that has an
* error if MQX found an error in the lightweight event component (NULL if no error
* is found).
* \param[out] td_error_ptr TD on the lightweight event in error (NULL if no
* error is found).
*
* \return MQX_OK
* \return MQX_CANNOT_CALL_FUNCTION_FROM_ISR (Function cannot be called from an ISR.)
* \return MQX_LWEVENT_INVALID (A lightweight event was invalid.)
* \return code from _queue_test() (Waiting queue for a lightweight event has an error.)
*
* \warning Cannot be called from an ISR.
*
* \see _lwevent_create
* \see _lwevent_destroy
*/
_mqx_uint _lwevent_test
(
void **event_error_ptr,
void **td_error_ptr
)
{
KERNEL_DATA_STRUCT_PTR kernel_data;
LWEVENT_STRUCT_PTR event_ptr;
_mqx_uint result;
_mqx_uint queue_size;
_GET_KERNEL_DATA(kernel_data);
_KLOGE2(KLOG_lwevent_test, event_error_ptr);
*td_error_ptr = NULL;
*event_error_ptr = NULL;
#if MQX_CHECK_ERRORS
if (kernel_data->IN_ISR)
{
_KLOGX2(KLOG_lwevent_test, MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
return (MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
}/* Endif */
#endif
/*
* It is not considered an error if the lwevent component has not been
* created yet
*/
if (kernel_data->LWEVENTS.NEXT == NULL)
{
return (MQX_OK);
} /* Endif */
result = _queue_test((QUEUE_STRUCT_PTR) &kernel_data->LWEVENTS, event_error_ptr);
if (result != MQX_OK)
{
_KLOGX3(KLOG_lwevent_test, result, *event_error_ptr);
return (result);
} /* Endif */
event_ptr = (LWEVENT_STRUCT_PTR) ((void *) kernel_data->LWEVENTS.NEXT);
queue_size = _QUEUE_GET_SIZE(&kernel_data->LWEVENTS);
while (queue_size--)
{
if (event_ptr->VALID != LWEVENT_VALID)
{
result = MQX_LWEVENT_INVALID;
break;
} /* Endif */
result = _queue_test(&event_ptr->WAITING_TASKS, td_error_ptr);
if (result != MQX_OK)
{
break;
} /* Endif */
event_ptr = (LWEVENT_STRUCT_PTR) (void *) event_ptr->LINK.NEXT;
} /* Endwhile */
_int_enable();
if (result != MQX_OK)
{
*event_error_ptr = (void *) event_ptr;
} /* Endif */
_KLOGX4(KLOG_lwevent_test, result, *event_error_ptr, *td_error_ptr);
return (result);
}
/*!
* \brief Tests all the message poolsin the system for consistency and validity.
*
* The function checks the validity of each message in each private and system
* message pool. It reports the first error that it finds.
*
* \param[out] pool_error_ptr (Initialized only if an error is found.) If the
* message in a message pool has an error; one of the following:
* \li A pointer to a pool ID if the message is from a private message pool.
* \li A pointer to a system message pool if the message is from a system
* message pool.
* \param[out] msg_error_ptr Pointer to the message that has an error
* (initialized only if an error is found).
*
* \return MQX_OK (all messages in all message pools passed)
* \return MQX_COMPONENT_DOES_NOT_EXIST (Message component is not created.)
* \return MSGQ_INVALID_MESSAGE (At least one message in at least one message
* pool failed.)
*
* \warning Disables and enables interrupts.
*
* \see _msgpool_create
* \see _msgpool_create_system
*/
_mqx_uint _msgpool_test
(
void **pool_error_ptr,
void **msg_error_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
MSG_COMPONENT_STRUCT_PTR msg_component_ptr;
MSGPOOL_STRUCT_PTR msgpool_ptr;
MSGPOOL_BLOCK_STRUCT_PTR msgpool_block_ptr;
INTERNAL_MESSAGE_STRUCT_PTR imsg_ptr;
_mqx_uint i,j,raw_message_size;
_GET_KERNEL_DATA(kernel_data);
_KLOGE3(KLOG_msgpool_test, pool_error_ptr, msg_error_ptr);
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
#if MQX_CHECK_ERRORS
if (msg_component_ptr == NULL)
{
_KLOGX2(KLOG_msgpool_test, MQX_COMPONENT_DOES_NOT_EXIST);
return(MQX_COMPONENT_DOES_NOT_EXIST);
} /* Endif */
#endif
/* Check all the message pools */
msgpool_ptr = msg_component_ptr->MSGPOOLS_PTR;
i = msg_component_ptr->MAX_MSGPOOLS + 1;
while (--i)
{
_int_disable();
if (msgpool_ptr->VALID == MSG_VALID)
{
/* The pool has been created */
/* Search through all of the message pool blocks for this pool */
msgpool_block_ptr = msgpool_ptr->MSGPOOL_BLOCK_PTR;
while (msgpool_block_ptr != NULL)
{
raw_message_size = msgpool_block_ptr->RAW_MESSAGE_SIZE;
imsg_ptr = (INTERNAL_MESSAGE_STRUCT_PTR)
msgpool_block_ptr->FIRST_IMSG_PTR;
j = msgpool_block_ptr->NUM_MESSAGES + 1;
while (--j)
{
if ((imsg_ptr->VALID != MSG_VALID) ||
(imsg_ptr->MSGPOOL_PTR != msgpool_ptr))
{
_int_enable();
*pool_error_ptr = msgpool_ptr;
*msg_error_ptr = imsg_ptr;
_KLOGX4(KLOG_msgpool_test, MSGQ_INVALID_MESSAGE, msgpool_ptr,
imsg_ptr);
return(MSGQ_INVALID_MESSAGE);
} /* Endif */
imsg_ptr =(INTERNAL_MESSAGE_STRUCT_PTR)
((unsigned char *)imsg_ptr + raw_message_size);
} /* Endwhile */
msgpool_block_ptr = msgpool_block_ptr->NEXT_BLOCK_PTR;
} /* Endwhile */
} /* Endif */
_int_enable();
msgpool_ptr++;
} /* Endwhile */
_KLOGX2(KLOG_msgpool_test, MQX_OK);
return(MQX_OK);
} /* Endbody */
_pool_id _msgpool_create_internal
(
/* [IN] size of the messages being created */
uint_16 message_size,
/* [IN] no. of messages in this pool */
uint_16 num_messages,
/* [IN] no. of messages to grow pool by if empty */
uint_16 grow_number,
/* [IN] maximum number of messages allowed in pool */
uint_16 grow_limit,
/* [IN] whether this is a system pool or a regular pool */
_mqx_uint pool_type
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
MSG_COMPONENT_STRUCT_PTR msg_component_ptr;
register MSGPOOL_STRUCT_PTR msgpool_ptr;
register MSGPOOL_STRUCT_PTR temp_msgpool_ptr;
register MSGPOOL_STRUCT_PTR prev_msgpool_ptr;
register _mqx_uint i;
_mqx_uint result;
_GET_KERNEL_DATA(kernel_data);
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
#if MQX_CHECK_ERRORS
if (message_size < sizeof(MESSAGE_HEADER_STRUCT)) {
_task_set_error(MSGPOOL_MESSAGE_SIZE_TOO_SMALL);
return ((_pool_id) 0);
} /* Endif */
#endif
/*
** Try to find an available slot in the array of msgpools for a new pool
** if MAX_MSGPOOLS_EVER has not yet reached MAX_MSGPOOLS then
** simply use MAX_MSGPOOLS_EVER as an index value and then increment it
** but if MAX_MSGPOOLS_EVER has reached MAX_MSGPOOLS then
** go back and search through the previously assigned headers to see
** if one has been deallocated and is available for use
*/
if (msg_component_ptr == NULL) {
result = _msg_create_component();
msg_component_ptr = _GET_MSG_COMPONENT_STRUCT_PTR(kernel_data);
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (msg_component_ptr == NULL) {
_task_set_error(result);
return ((_pool_id)0);
} /* Endif */
#endif
} /* Endif */
_int_disable();
if (msg_component_ptr->MAX_MSGPOOLS_EVER >= msg_component_ptr->MAX_MSGPOOLS) {
msgpool_ptr = &msg_component_ptr->MSGPOOLS_PTR[0];
for ( i=0; i < msg_component_ptr->MAX_MSGPOOLS; i++ ) {
if (msgpool_ptr->VALID != MSG_VALID) {
break;
} /* Endif */
msgpool_ptr++;
} /* Endfor */
if (i == msg_component_ptr->MAX_MSGPOOLS) {
_int_enable();
_task_set_error(MSGPOOL_OUT_OF_POOLS);
return ((_pool_id)0);
} /* Endif */
} else {
msgpool_ptr = &msg_component_ptr->MSGPOOLS_PTR[
msg_component_ptr->MAX_MSGPOOLS_EVER++];
} /* Endif */
msgpool_ptr->VALID = MSG_VALID;
msgpool_ptr->MESSAGE_SIZE = message_size;
msgpool_ptr->GROW_NUMBER = 0;
_int_enable();
msgpool_ptr->MSGPOOL_BLOCK_PTR = NULL;
msgpool_ptr->MSG_FREE_LIST_PTR = NULL;
msgpool_ptr->NEXT_MSGPOOL_PTR = NULL;
msgpool_ptr->SIZE = 0;
msgpool_ptr->MAX = 0;
if ( grow_number == 0 ) {
msgpool_ptr->GROW_LIMIT = num_messages;
} else if (grow_limit == 0) {
msgpool_ptr->GROW_LIMIT = 0xFFFF;
} else {
msgpool_ptr->GROW_LIMIT = grow_limit;
} /* Endif */
msgpool_ptr->MSGPOOL_TYPE = pool_type;
if (num_messages) {
_msgpool_add_internal(msgpool_ptr, num_messages);
/* no messages could be created, so abort pool creation */
if (msgpool_ptr->SIZE == 0) {
msgpool_ptr->VALID = 0;
_task_set_error(MQX_OUT_OF_MEMORY);
return ((_pool_id)0);
} /* Endif */
} /* Endif */
msgpool_ptr->GROW_NUMBER = grow_number;
if ( pool_type == SYSTEM_MSG_POOL ) {
/* We must insert the pool into the link list of system message pools,
** by order of size, smallest first.
*/
_int_disable();
prev_msgpool_ptr = msg_component_ptr->SMALLEST_MSGPOOL_PTR;
if (prev_msgpool_ptr == NULL) {
/* first entry in list */
msg_component_ptr->SMALLEST_MSGPOOL_PTR = msgpool_ptr;
msg_component_ptr->LARGEST_MSGPOOL_PTR = msgpool_ptr;
} else if (prev_msgpool_ptr->MESSAGE_SIZE >= msgpool_ptr->MESSAGE_SIZE){
/* The new pool is smaller than that at head of list */
msgpool_ptr->NEXT_MSGPOOL_PTR = prev_msgpool_ptr;
msg_component_ptr->SMALLEST_MSGPOOL_PTR = msgpool_ptr;
} else {
temp_msgpool_ptr = prev_msgpool_ptr->NEXT_MSGPOOL_PTR;
while (temp_msgpool_ptr != NULL) {
/* check the relative message sizes */
if (temp_msgpool_ptr->MESSAGE_SIZE < msgpool_ptr->MESSAGE_SIZE){
/* continue to walk down linked list */
prev_msgpool_ptr = temp_msgpool_ptr;
temp_msgpool_ptr = prev_msgpool_ptr->NEXT_MSGPOOL_PTR;
} else {
/* this entry belongs between prev_ptr and temp_msgpool_ptr */
prev_msgpool_ptr->NEXT_MSGPOOL_PTR = msgpool_ptr;
msgpool_ptr->NEXT_MSGPOOL_PTR = temp_msgpool_ptr;
break;
} /* Endif */
} /* Endwhile */
if (temp_msgpool_ptr == NULL) {
/* searched the list and this entry belongs at the bottom */
prev_msgpool_ptr->NEXT_MSGPOOL_PTR = msgpool_ptr;
msg_component_ptr->LARGEST_MSGPOOL_PTR = msgpool_ptr;
}/* Endif */
} /* Endif */
_int_enable();
} /* Endif */
return ((_pool_id)msgpool_ptr);
} /* Endbody */
_mqx_uint _mem_extend_pool_internal
(
/* [IN] the address of the start of the memory pool addition */
pointer start_of_pool,
/* [IN] the size of the memory pool addition */
_mem_size size,
/* [IN] the memory pool to extend */
MEMPOOL_STRUCT_PTR mem_pool_ptr
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
STOREBLOCK_STRUCT_PTR block_ptr;
STOREBLOCK_STRUCT_PTR end_ptr;
STOREBLOCK_STRUCT_PTR free_ptr;
STOREBLOCK_STRUCT_PTR tmp_ptr;
MEMPOOL_EXTENSION_STRUCT_PTR ext_ptr;
uchar_ptr real_start_ptr;
uchar_ptr end_of_pool;
_mem_size block_size;
_mem_size real_size;
_mem_size free_block_size;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (size < (_mem_size)(3*MQX_MIN_MEMORY_STORAGE_SIZE)) {
/* Pool must be big enough to hold at least 3 memory blocks */
return(MQX_INVALID_SIZE);
}/* Endif */
#endif
#if MQX_CHECK_VALIDITY
if (mem_pool_ptr->VALID != MEMPOOL_VALID) {
return(MQX_INVALID_COMPONENT_HANDLE);
}/* Endif */
#endif
ext_ptr = (MEMPOOL_EXTENSION_STRUCT_PTR)
_ALIGN_ADDR_TO_HIGHER_MEM(start_of_pool);
real_start_ptr = (uchar_ptr)ext_ptr + sizeof(MEMPOOL_EXTENSION_STRUCT);
real_start_ptr = (uchar_ptr)_ALIGN_ADDR_TO_HIGHER_MEM(real_start_ptr);
end_of_pool = (uchar_ptr)start_of_pool + size;
end_of_pool = (uchar_ptr)_ALIGN_ADDR_TO_LOWER_MEM(end_of_pool);
real_size = (_mem_size)(end_of_pool - real_start_ptr);
ext_ptr->START = start_of_pool;
ext_ptr->SIZE = size;
ext_ptr->REAL_START = real_start_ptr;
block_ptr = (STOREBLOCK_STRUCT_PTR)real_start_ptr;
block_size = MQX_MIN_MEMORY_STORAGE_SIZE;
free_ptr = (STOREBLOCK_STRUCT_PTR)((uchar_ptr)block_ptr + block_size);
free_block_size = real_size - (_mem_size)(2 * MQX_MIN_MEMORY_STORAGE_SIZE);
end_ptr = (STOREBLOCK_STRUCT_PTR)((uchar_ptr)free_ptr + free_block_size);
/*
** Make a small minimal sized memory block to be as
** the first block in the pool. This will be an in-use block
** and will thus avoid problems with memory co-allescing during
** memory frees
*/
block_ptr->BLOCKSIZE = block_size;
block_ptr->MEM_TYPE = 0;
block_ptr->USER_AREA = 0;
block_ptr->PREVBLOCK = (struct storeblock_struct _PTR_)NULL;
block_ptr->NEXTBLOCK = free_ptr;
MARK_BLOCK_AS_USED(block_ptr, SYSTEM_TASK_ID(kernel_data));
CALC_CHECKSUM(block_ptr);
/*
** Let the next block be the actual free block that will be added
** to the free list
*/
free_ptr->BLOCKSIZE = free_block_size;
free_ptr->MEM_TYPE = 0;
free_ptr->USER_AREA = 0;
free_ptr->PREVBLOCK = block_ptr;
free_ptr->NEXTBLOCK = end_ptr;
MARK_BLOCK_AS_FREE(free_ptr);
CALC_CHECKSUM(free_ptr);
/*
** Set up a minimal sized block at the end of the pool, and also
** mark it as being allocated. Again this is to comply with the
** _mem_free algorithm
*/
end_ptr->BLOCKSIZE = block_size;
end_ptr->MEM_TYPE = 0;
end_ptr->USER_AREA = 0;
end_ptr->PREVBLOCK = free_ptr;
end_ptr->NEXTBLOCK = NULL;
MARK_BLOCK_AS_USED(end_ptr, SYSTEM_TASK_ID(kernel_data));
CALC_CHECKSUM(end_ptr);
_int_disable(); /* Add the block to the free list */
tmp_ptr = mem_pool_ptr->POOL_FREE_LIST_PTR;
mem_pool_ptr->POOL_FREE_LIST_PTR = free_ptr;
if (tmp_ptr != NULL) {
PREV_FREE(tmp_ptr) = free_ptr;
} /* Endif */
PREV_FREE(free_ptr) = NULL;
NEXT_FREE(free_ptr) = tmp_ptr;
/* Reset the free list queue walker for some other task */
mem_pool_ptr->POOL_FREE_CURRENT_BLOCK = mem_pool_ptr->POOL_FREE_LIST_PTR;
/* Link in the extension */
_QUEUE_ENQUEUE(&mem_pool_ptr->EXT_LIST, &ext_ptr->LINK);
_int_enable();
return(MQX_OK);
} /* Endbody */
_mqx_uint _lwsem_wait_ticks
(
/* [IN] the semaphore address */
LWSEM_STRUCT_PTR sem_ptr,
/* [IN] the number of ticks to delay, if 0, delay forever */
_mqx_uint time_in_ticks
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
TD_STRUCT_PTR td_ptr;
_mqx_uint result;
#if MQX_ENABLE_USER_MODE && MQX_ENABLE_USER_STDAPI
if (MQX_RUN_IN_USER_MODE) {
return _usr_lwsem_wait_ticks(sem_ptr, time_in_ticks);
}
#endif
_GET_KERNEL_DATA(kernel_data);
_KLOGE3(KLOG_lwsem_wait_ticks, sem_ptr, time_in_ticks);
#if MQX_CHECK_ERRORS
if (kernel_data->IN_ISR) {
_KLOGX2(KLOG_lwsem_wait_ticks, MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
return(MQX_CANNOT_CALL_FUNCTION_FROM_ISR);
} /* Endif */
#endif
#if MQX_CHECK_VALIDITY
if (sem_ptr->VALID != LWSEM_VALID) {
_KLOGX2(KLOG_lwsem_wait_ticks, MQX_INVALID_LWSEM);
return(MQX_INVALID_LWSEM);
} /* Endif */
#endif
_INT_DISABLE();
if (sem_ptr->VALUE <= 0) {
td_ptr = kernel_data->ACTIVE_PTR;
if (time_in_ticks == 0) {
td_ptr->STATE = LWSEM_BLOCKED;
td_ptr->INFO = (_mqx_uint)&sem_ptr->TD_QUEUE;
_QUEUE_UNLINK(td_ptr);
_QUEUE_ENQUEUE(&sem_ptr->TD_QUEUE, &td_ptr->AUX_QUEUE);
_sched_execute_scheduler_internal(); /* Let the other tasks run */
/* Another task has posted a semaphore, and it has been tranfered to this
** task.
*/
result = MQX_OK;
} else {
PSP_ADD_TICKS_TO_TICK_STRUCT(&kernel_data->TIME, time_in_ticks,
&td_ptr->TIMEOUT);
result = _lwsem_wait_timed_internal(sem_ptr, td_ptr);
} /* Endif */
} else {
--sem_ptr->VALUE;
/* Start CR 788 */
result = MQX_OK;
/* End CR 788 */
} /* Endif */
//#if MQX_COMPONENT_DESTRUCTION
/* We must check for component destruction */
if (sem_ptr->VALID != LWSEM_VALID) {
_int_enable();
/* The semaphore has been deleted */
_KLOGX2(KLOG_lwsem_wait_ticks, MQX_INVALID_LWSEM);
return(MQX_INVALID_LWSEM);
} /* Endif */
//#endif
_INT_ENABLE();
_KLOGX2(KLOG_lwsem_wait_ticks, result);
return(result);
}
/*!
* \brief Creates a new log.
*
* Each entry in the log contains application-specified data, a timestamp (in
* absolute time), and a sequence number.
*
* \param[in] log_number Log number to create (0 through 15).
* \param[in] max_size Maximum size of the data to be stored in _mqx_uints
* (includes LOG_ENTRY_STRUCT headers).
* \param[in] flags One of the following:
* \li LOG_OVERWRITE (When the log is full, write new entries over oldest ones.)
* \li 0 (When the log is full, do not write entries.)
*
* \return MQX_OK
* \return LOG_INVALID (Log_number exceeds 15)
* \return MQX_INVALID_COMPONENT_BASE (Component is not valid.)
* \return MQX_OUT_OF_MEMORY (MQX is out of memory.)
* \return LOG_EXISTS (Log log_number has already been created.)
*
* \warning Creates the log component if it was not created.
*
* \see _log_create_component
* \see _log_destroy
* \see _log_read
* \see _log_write
* \see LOG_ENTRY_STRUCT
*/
_mqx_uint _log_create
(
_mqx_uint log_number,
_mqx_uint max_size,
uint_32 flags
)
{ /* Body */
KERNEL_DATA_STRUCT_PTR kernel_data;
LOG_COMPONENT_STRUCT_PTR log_component_ptr;
LOG_HEADER_STRUCT_PTR log_header_ptr;
_mqx_uint result;
_GET_KERNEL_DATA(kernel_data);
#if MQX_CHECK_ERRORS
if (log_number >= LOG_MAXIMUM_NUMBER)
{
return(LOG_INVALID);
} /* Endif */
#endif
log_component_ptr = (LOG_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_LOG];
if (log_component_ptr == NULL)
{
result = _log_create_component();
log_component_ptr = (LOG_COMPONENT_STRUCT_PTR)
kernel_data->KERNEL_COMPONENTS[KERNEL_LOG];
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (log_component_ptr == NULL)
{
return(result);
} /* Endif */
#endif
} /* Endif */
#if MQX_CHECK_VALIDITY
if (log_component_ptr->VALID != LOG_VALID)
{
return(MQX_INVALID_COMPONENT_BASE);
} /* Endif */
#endif
log_header_ptr = (LOG_HEADER_STRUCT_PTR)
_mem_alloc_system((_mem_size)(sizeof(LOG_HEADER_STRUCT) + max_size *
sizeof(_mqx_uint)));
#if MQX_CHECK_MEMORY_ALLOCATION_ERRORS
if (log_header_ptr == NULL)
{
return(MQX_OUT_OF_MEMORY);
} /* Endif */
#endif
_mem_set_type(log_header_ptr, MEM_TYPE_LOG);
log_header_ptr->FLAGS = flags;
log_header_ptr->FLAGS |= LOG_ENABLED;
log_header_ptr->NUMBER = 1;
log_header_ptr->MAX = max_size;
log_header_ptr->SIZE = 0;
log_header_ptr->LOG_WRITE = &log_header_ptr->DATA[0];
log_header_ptr->LOG_READ = log_header_ptr->LOG_WRITE;
log_header_ptr->LAST_LOG = log_header_ptr->LOG_WRITE;
log_header_ptr->LOG_START = log_header_ptr->LOG_WRITE;
log_header_ptr->LOG_END = &log_header_ptr->DATA[max_size];
log_header_ptr->LOG_NEXT = NULL;
_int_disable();
#if MQX_CHECK_ERRORS
if (log_component_ptr->LOGS[log_number] != NULL)
{
_int_enable();
_mem_free(log_header_ptr);
return(LOG_EXISTS);
} /* Endif */
#endif
log_component_ptr->LOGS[log_number] = log_header_ptr;
_int_enable();
return(MQX_OK);
} /* Endbody */
