e42f7b552f
03/11: CC3000 driver was getting stuck at recv() when remote host closed connection and application tried to read data from remotely shutdown socket. This patch adds proper handling for remotely closed socket event. 07/11: Socket state initialization was done in 'register', while it should be initialized in 'open' and deinitialized in 'close'. Old way caused problems when device is closed, power-cycled and then reopened as old socket state was left enabled. 08/11: Select thread was getting stuck after 'close, power-cycle, reopen', since selectsem was not properly setup and cleaned up. 09/11 'maxFD' was not properly reset in select worker and not checked for before calling cc3000_select(). 10/11: After wlan_stop()/cc3000_close(), irqsem was left with count '-1'. Therefore on next wlan_start()/cc3000_open(), initial value for irqsem was wrong. Additional repeated wlan_start()/wlan_stop() decreased irqsem value further. Obviously this causes driver not to function correctly and freeze. Patch moves initialization and destruction of waitsem, irqsem and readysem to cc3000_open/cc3000_close. All are: Signed-off-by: Jussi Kivilinna <jussi.kivilinna@haltian.com>
214 lines
7.2 KiB
C
214 lines
7.2 KiB
C
/****************************************************************************
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* drivers//wireless/cc3000.h
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*
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* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
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* Authors: Gregory Nutt <gnutt@nuttx.org>
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* David Sidrane <david_s5@nscdg.com>
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*
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* References:
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* CC30000 from Texas Instruments http://processors.wiki.ti.com/index.php/CC3000
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*
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* See also:
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* http://processors.wiki.ti.com/index.php/CC3000_Host_Driver_Porting_Guide
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* http://processors.wiki.ti.com/index.php/CC3000_Host_Programming_Guide
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __DRIVERS_WIRELESS_WIRELESS_CC3000_H
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#define __DRIVERS_WIRELESS_WIRELESS_CC3000_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <mqueue.h>
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#include <pthread.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/irq.h>
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#include <nuttx/wireless/wireless.h>
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#include <nuttx/wireless/cc3000.h>
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#include <nuttx/wireless/cc3000/cc3000_common.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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#define CONFIG_CC3000_MT /* Indicate multi threaded version */
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#ifdef CONFIG_CC3000_MT
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# define CONFIG_WL_MAX_SOCKETS 5
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#endif
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/* CC3000 Interfaces ********************************************************/
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/* Driver support ***********************************************************/
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/* This format is used to construct the /dev/input[n] device driver path. It
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* defined here so that it will be used consistently in all places.
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*/
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#define READ 3
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#define READ_COMMAND {READ, 0 , 0 , 0 , 0}
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#define READ_OFFSET_TO_LENGTH 3 //cmd dmy dmy lh ll
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#define WRITE 1
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#define HI(value) (((value) & 0xFF00) >> 8)
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#define LO(value) ((value) & 0x00FF)
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#define SPI_HEADER_SIZE (5)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifdef CONFIG_CC3000_MT
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/* lock to serialize access to driver (SPI protocol is window size 1) */
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extern pthread_mutex_t g_cc3000_mut;
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/* This structure describes the state of one CC3000 driver instance */
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typedef struct cc3000_socket_ent
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{
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volatile int sd;
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long status;
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bool received_closed_event:1;
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bool emptied_and_remotely_closed:1;
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sem_t semwait;
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} cc3000_socket_ent;
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typedef struct cc3000_accept_ent
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{
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cc3000_socket_ent acc;
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struct sockaddr addr;
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socklen_t addrlen;
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} cc3000_accept_ent;
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#endif
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typedef enum
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{
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eSPI_STATE_POWERUP = 0,
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eSPI_STATE_INITIALIZED,
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eSPI_STATE_IDLE,
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eSPI_STATE_WRITE_WAIT_IRQ,
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eSPI_STATE_WRITE_PROCEED,
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eSPI_STATE_WRITE_DONE,
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eSPI_STATE_READ_IRQ,
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eSPI_STATE_READ_PROCEED,
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eSPI_STATE_READ_READY,
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} eDeviceStates;
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struct cc3000_dev_s
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{
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#ifdef CONFIG_CC3000_MULTIPLE
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FAR struct cc3000_dev_s *flink; /* Supports a singly linked list of drivers */
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#endif
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pthread_t workertid; /* Handle for the worker thread */
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uint8_t crefs; /* Number of times the device has been opened */
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uint8_t nwaiters; /* Number of threads waiting for CC3000 data */
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uint8_t minor; /* minor */
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sem_t devsem; /* Manages exclusive access to this structure */
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sem_t *wrkwaitsem; /* Suspend and resume the delivery of messages */
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sem_t waitsem; /* Used to wait for the availability of data */
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sem_t irqsem; /* Used to signal irq from cc3000 */
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sem_t readysem; /* Used to wait for Ready Condition from the cc3000 */
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FAR struct cc3000_config_s *config; /* Board configuration data */
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FAR struct spi_dev_s *spi; /* Saved SPI driver instance */
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mqd_t queue; /* For unsolicited data delivery */
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eDeviceStates state; /* The device state */
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cc3000_buffer_desc rx_buffer;
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ssize_t rx_buffer_max_len;
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/* The following is a list if socket structures of threads waiting
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* long operations to finish;
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*/
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#ifdef CONFIG_CC3000_MT
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pthread_t selecttid; /* Handle for the select thread */
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sem_t selectsem; /* Used to sleep the select thread */
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cc3000_socket_ent sockets[CONFIG_WL_MAX_SOCKETS];
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cc3000_accept_ent accepting_socket;
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#endif
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/* The following is a list if poll structures of threads waiting for
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* driver events. The 'struct pollfd' reference for each open is also
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* retained in the f_priv field of the 'struct file'.
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*/
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#ifndef CONFIG_DISABLE_POLL
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struct pollfd *fds[CONFIG_CC3000_NPOLLWAITERS];
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#endif
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#if defined(CONFIG_DEBUG) && defined(CONFIG_CC3000_PROBES)
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long guard;
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#endif
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};
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/********************************************************************************************
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* Public Function Prototypes
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********************************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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static inline void cc3000_lib_lock(void)
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{
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#ifdef CONFIG_CC3000_MT
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int status = pthread_mutex_lock(&g_cc3000_mut);
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DEBUGASSERT(status == 0);
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UNUSED(status);
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#endif
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}
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static inline void cc3000_lib_unlock(void)
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{
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#ifdef CONFIG_CC3000_MT
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int status = pthread_mutex_unlock(&g_cc3000_mut);
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DEBUGASSERT(status == 0);
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UNUSED(status);
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#endif
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}
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int cc3000_do_accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRIVERS_WIRELESS_WIRELESS_CC3000_H */
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