lwIP code by Eddie, not fully "RT-free" in the HAL LLD.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7009 35acf78f-673a-0410-8e92-d51de3d6d3f4

8 files changed, 932 insertions, 0 deletions

diff --git a/os/various/lwip_bindings/arch/cc.h b/os/various/lwip_bindings/arch/cc.h
new file mode 100644
index 000000000..45b302716
--- /dev/null
+++ b/os/various/lwip_bindings/arch/cc.h
@@ -0,0 +1,74 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+/*

+ * **** This file incorporates work covered by the following copyright and ****

+ * **** permission notice:                                                 ****

+ *

+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification,

+ * are permitted provided that the following conditions are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright notice,

+ *    this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright notice,

+ *    this list of conditions and the following disclaimer in the documentation

+ *    and/or other materials provided with the distribution.

+ * 3. The name of the author may not be used to endorse or promote products

+ *    derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

+ * OF SUCH DAMAGE.

+ *

+ * This file is part of the lwIP TCP/IP stack.

+ *

+ * Author: Adam Dunkels <adam@sics.se>

+ *

+ */

+

+#ifndef __CC_H__

+#define __CC_H__

+

+#include <hal.h>

+

+typedef uint8_t         u8_t;

+typedef int8_t          s8_t;

+typedef uint16_t        u16_t;

+typedef int16_t         s16_t;

+typedef uint32_t        u32_t;

+typedef int32_t         s32_t;

+typedef uint32_t        mem_ptr_t;

+

+#define PACK_STRUCT_STRUCT __attribute__((packed))

+

+#define LWIP_PLATFORM_DIAG(x)

+#define LWIP_PLATFORM_ASSERT(x) {                                       \

+  osalSysHalt(x);                                                          \

+}

+

+#define BYTE_ORDER LITTLE_ENDIAN

+#define LWIP_PROVIDE_ERRNO

+

+#endif /* __CC_H__ */

diff --git a/os/various/lwip_bindings/arch/perf.h b/os/various/lwip_bindings/arch/perf.h
new file mode 100644
index 000000000..81ef4673b
--- /dev/null
+++ b/os/various/lwip_bindings/arch/perf.h
@@ -0,0 +1,57 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+/*

+ * **** This file incorporates work covered by the following copyright and ****

+ * **** permission notice:                                                 ****

+ *

+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification,

+ * are permitted provided that the following conditions are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright notice,

+ *    this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright notice,

+ *    this list of conditions and the following disclaimer in the documentation

+ *    and/or other materials provided with the distribution.

+ * 3. The name of the author may not be used to endorse or promote products

+ *    derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

+ * OF SUCH DAMAGE.

+ *

+ * This file is part of the lwIP TCP/IP stack.

+ *

+ * Author: Adam Dunkels <adam@sics.se>

+ *

+ */

+

+#ifndef __PERF_H__

+#define __PERF_H__

+

+#define PERF_START

+#define PERF_STOP(x)

+

+#endif /* __PERF_H__ */

diff --git a/os/various/lwip_bindings/arch/sys_arch.c b/os/various/lwip_bindings/arch/sys_arch.c
new file mode 100644
index 000000000..96f17a024
--- /dev/null
+++ b/os/various/lwip_bindings/arch/sys_arch.c
@@ -0,0 +1,240 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+/*

+ * **** This file incorporates work covered by the following copyright and ****

+ * **** permission notice:                                                 ****

+ *

+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification,

+ * are permitted provided that the following conditions are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright notice,

+ *    this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright notice,

+ *    this list of conditions and the following disclaimer in the documentation

+ *    and/or other materials provided with the distribution.

+ * 3. The name of the author may not be used to endorse or promote products

+ *    derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

+ * OF SUCH DAMAGE.

+ *

+ * This file is part of the lwIP TCP/IP stack.

+ *

+ * Author: Adam Dunkels <adam@sics.se>

+ *

+ */

+

+// see http://lwip.wikia.com/wiki/Porting_for_an_OS for instructions

+

+#include "hal.h"

+

+#include "lwip/opt.h"

+#include "lwip/mem.h"

+#include "lwip/sys.h"

+#include "lwip/stats.h"

+

+#include "arch/cc.h"

+#include "arch/sys_arch.h"

+

+void sys_init(void) {

+

+}

+

+err_t sys_sem_new(sys_sem_t *sem, u8_t count) {

+

+  *sem = chHeapAlloc(NULL, sizeof(semaphore_t));

+  if (*sem == 0) {

+    SYS_STATS_INC(sem.err);

+    return ERR_MEM;

+  }

+  else {

+    chSemObjectInit(*sem, (cnt_t)count);

+    SYS_STATS_INC_USED(sem);

+    return ERR_OK;

+  }

+}

+

+void sys_sem_free(sys_sem_t *sem) {

+

+  chHeapFree(*sem);

+  *sem = SYS_SEM_NULL;

+  SYS_STATS_DEC(sem.used);

+}

+

+void sys_sem_signal(sys_sem_t *sem) {

+

+  chSemSignal(*sem);

+}

+

+/* CHIBIOS FIX: specific variant of this call to be called from within

+   a lock.*/

+void sys_sem_signal_S(sys_sem_t *sem) {

+

+  chSemSignalI(*sem);

+  chSchRescheduleS();

+}

+

+u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout) {

+  systime_t time, tmo;

+

+  osalSysLock();

+  tmo = timeout > 0 ? (systime_t)timeout : TIME_INFINITE;

+  time = osalOsGetSystemTimeX();

+  if (chSemWaitTimeoutS(*sem, tmo) != MSG_OK)

+    time = SYS_ARCH_TIMEOUT;

+  else

+    time = osalOsGetSystemTimeX() - time;

+  osalSysUnlock();

+  return time;

+}

+

+int sys_sem_valid(sys_sem_t *sem) {

+  return *sem != SYS_SEM_NULL;

+}

+

+// typically called within lwIP after freeing a semaphore

+// to make sure the pointer is not left pointing to invalid data

+void sys_sem_set_invalid(sys_sem_t *sem) {

+  *sem = SYS_SEM_NULL;

+}

+

+err_t sys_mbox_new(sys_mbox_t *mbox, int size) {

+  

+  *mbox = chHeapAlloc(NULL, sizeof(mailbox_t) + sizeof(msg_t) * size);

+  if (*mbox == 0) {

+    SYS_STATS_INC(mbox.err);

+    return ERR_MEM;

+  }

+  else {

+    chMBObjectInit(*mbox, (void *)(((uint8_t *)*mbox) + sizeof(mailbox_t)), size);

+    SYS_STATS_INC(mbox.used);

+    return ERR_OK;

+  }

+}

+

+void sys_mbox_free(sys_mbox_t *mbox) {

+  cnt_t tmpcnt;

+

+  osalSysLock();

+  tmpcnt = chMBGetUsedCountI(*mbox);

+  osalSysUnlock();

+

+  if (tmpcnt != 0) {

+    // If there are messages still present in the mailbox when the mailbox

+    // is deallocated, it is an indication of a programming error in lwIP

+    // and the developer should be notified.

+    SYS_STATS_INC(mbox.err);

+    chMBReset(*mbox);

+  }

+  chHeapFree(*mbox);

+  *mbox = SYS_MBOX_NULL;

+  SYS_STATS_DEC(mbox.used);

+}

+

+void sys_mbox_post(sys_mbox_t *mbox, void *msg) {

+

+  chMBPost(*mbox, (msg_t)msg, TIME_INFINITE);

+}

+

+err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg) {

+

+  if (chMBPost(*mbox, (msg_t)msg, TIME_IMMEDIATE) == MSG_TIMEOUT) {

+    SYS_STATS_INC(mbox.err);

+    return ERR_MEM;

+  }

+  return ERR_OK;

+}

+

+u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout) {

+  systime_t time, tmo;

+

+  osalSysLock();

+  tmo = timeout > 0 ? (systime_t)timeout : TIME_INFINITE;

+  time = osalOsGetSystemTimeX();

+  if (chMBFetchS(*mbox, (msg_t *)msg, tmo) != MSG_OK)

+    time = SYS_ARCH_TIMEOUT;

+  else

+    time = osalOsGetSystemTimeX() - time;

+  osalSysUnlock();

+  return time;

+}

+

+u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg) {

+

+  if (chMBFetch(*mbox, (msg_t *)msg, TIME_IMMEDIATE) == MSG_TIMEOUT)

+    return SYS_MBOX_EMPTY;

+  return 0;

+}

+

+int sys_mbox_valid(sys_mbox_t *mbox) {

+  return *mbox != SYS_MBOX_NULL;

+}

+

+// typically called within lwIP after freeing an mbox

+// to make sure the pointer is not left pointing to invalid data

+void sys_mbox_set_invalid(sys_mbox_t *mbox) {

+  *mbox = SYS_MBOX_NULL;

+}

+

+sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread,

+                            void *arg, int stacksize, int prio) {

+

+  size_t wsz;

+  void *wsp;

+

+  (void)name;

+  wsz = THD_WORKING_AREA_SIZE(stacksize);

+  wsp = chCoreAlloc(wsz);

+  if (wsp == NULL)

+    return NULL;

+  return (sys_thread_t)chThdCreateStatic(wsp, wsz, prio, (tfunc_t)thread, arg);

+}

+

+sys_prot_t sys_arch_protect(void) {

+

+  osalSysLock();

+  return 0;

+}

+

+void sys_arch_unprotect(sys_prot_t pval) {

+

+  (void)pval;

+  osalSysUnlock();

+}

+

+u32_t sys_now(void) {

+

+#if OSAL_ST_FREQUENCY == 1000

+  return (u32_t)osalOsGetSystemTimeX();

+#elif (OSAL_ST_FREQUENCY / 1000) >= 1 && (OSAL_ST_FREQUENCY % 1000) == 0

+  return ((u32_t)osalOsGetSystemTimeX() - 1) / (OSAL_ST_FREQUENCY / 1000) + 1;

+#elif (1000 / OSAL_ST_FREQUENCY) >= 1 && (1000 % OSAL_ST_FREQUENCY) == 0

+  return ((u32_t)osalOsGetSystemTimeX() - 1) * (1000 / OSAL_ST_FREQUENCY) + 1;

+#else

+  return (u32_t)(((u64_t)(osalOsGetSystemTimeX() - 1) * 1000) / OSAL_ST_FREQUENCY) + 1;

+#endif

+}

diff --git a/os/various/lwip_bindings/arch/sys_arch.h b/os/various/lwip_bindings/arch/sys_arch.h
new file mode 100644
index 000000000..8520a433d
--- /dev/null
+++ b/os/various/lwip_bindings/arch/sys_arch.h
@@ -0,0 +1,68 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+/*

+ * **** This file incorporates work covered by the following copyright and ****

+ * **** permission notice:                                                 ****

+ *

+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification,

+ * are permitted provided that the following conditions are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright notice,

+ *    this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright notice,

+ *    this list of conditions and the following disclaimer in the documentation

+ *    and/or other materials provided with the distribution.

+ * 3. The name of the author may not be used to endorse or promote products

+ *    derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

+ * OF SUCH DAMAGE.

+ *

+ * This file is part of the lwIP TCP/IP stack.

+ *

+ * Author: Adam Dunkels <adam@sics.se>

+ *

+ */

+

+#include <hal.h>

+

+#ifndef __SYS_ARCH_H__

+#define __SYS_ARCH_H__

+

+typedef semaphore_t *   sys_sem_t;

+typedef mailbox_t *     sys_mbox_t;

+typedef thread_t *      sys_thread_t;

+typedef int             sys_prot_t;

+

+#define SYS_MBOX_NULL   (mailbox_t *)0

+#define SYS_THREAD_NULL (thread_t *)0

+#define SYS_SEM_NULL    (semaphore_t *)0

+

+/* let sys.h use binary semaphores for mutexes */

+#define LWIP_COMPAT_MUTEX 1

+

+#endif /* __SYS_ARCH_H__ */

diff --git a/os/various/lwip_bindings/lwip.mk b/os/various/lwip_bindings/lwip.mk
new file mode 100644
index 000000000..e2aa72d2f
--- /dev/null
+++ b/os/various/lwip_bindings/lwip.mk
@@ -0,0 +1,54 @@
+# List of the required lwIP files.

+LWIP = 	${CHIBIOS}/os/ext/lwip

+

+LWBINDSRC = \

+        $(CHIBIOS)/os/various/lwip_bindings/lwipthread.c \

+        $(CHIBIOS)/os/various/lwip_bindings/arch/sys_arch.c

+

+LWNETIFSRC = \

+        ${LWIP}/src/netif/etharp.c

+

+LWCORESRC = \

+        ${LWIP}/src/core/dhcp.c \

+        ${LWIP}/src/core/dns.c \

+        ${LWIP}/src/core/init.c \

+        ${LWIP}/src/core/mem.c \

+        ${LWIP}/src/core/memp.c \

+        ${LWIP}/src/core/netif.c \

+        ${LWIP}/src/core/pbuf.c \

+        ${LWIP}/src/core/raw.c \

+        ${LWIP}/src/core/stats.c \

+        ${LWIP}/src/core/sys.c \

+        ${LWIP}/src/core/tcp.c \

+        ${LWIP}/src/core/tcp_in.c \

+        ${LWIP}/src/core/tcp_out.c \

+        ${LWIP}/src/core/udp.c

+

+LWIPV4SRC = \

+        ${LWIP}/src/core/ipv4/autoip.c \

+        ${LWIP}/src/core/ipv4/icmp.c \

+        ${LWIP}/src/core/ipv4/igmp.c \

+        ${LWIP}/src/core/ipv4/inet.c \

+        ${LWIP}/src/core/ipv4/inet_chksum.c \

+        ${LWIP}/src/core/ipv4/ip.c \

+        ${LWIP}/src/core/ipv4/ip_addr.c \

+        ${LWIP}/src/core/ipv4/ip_frag.c \

+        ${LWIP}/src/core/def.c \

+        ${LWIP}/src/core/timers.c

+

+LWAPISRC = \

+        ${LWIP}/src/api/api_lib.c \

+        ${LWIP}/src/api/api_msg.c \

+        ${LWIP}/src/api/err.c \

+        ${LWIP}/src/api/netbuf.c \

+        ${LWIP}/src/api/netdb.c \

+        ${LWIP}/src/api/netifapi.c \

+        ${LWIP}/src/api/sockets.c \

+        ${LWIP}/src/api/tcpip.c

+

+LWSRC = $(LWBINDSRC) $(LWNETIFSRC) $(LWCORESRC) $(LWIPV4SRC) $(LWAPISRC)

+

+LWINC = \

+        $(CHIBIOS)/os/various/lwip_bindings \

+        ${LWIP}/src/include \

+        ${LWIP}/src/include/ipv4

diff --git a/os/various/lwip_bindings/lwipthread.c b/os/various/lwip_bindings/lwipthread.c
new file mode 100644
index 000000000..918404d4d
--- /dev/null
+++ b/os/various/lwip_bindings/lwipthread.c
@@ -0,0 +1,302 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+/*

+ * **** This file incorporates work covered by the following copyright and ****

+ * **** permission notice:                                                 ****

+ *

+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without modification,

+ * are permitted provided that the following conditions are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright notice,

+ *    this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright notice,

+ *    this list of conditions and the following disclaimer in the documentation

+ *    and/or other materials provided with the distribution.

+ * 3. The name of the author may not be used to endorse or promote products

+ *    derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

+ * OF SUCH DAMAGE.

+ *

+ * This file is part of the lwIP TCP/IP stack.

+ *

+ * Author: Adam Dunkels <adam@sics.se>

+ *

+ */

+

+/**

+ * @file lwipthread.c

+ * @brief LWIP wrapper thread code.

+ * @addtogroup LWIP_THREAD

+ * @{

+ */

+

+#include "hal.h"

+#include "evtimer.h"

+

+#include "lwipthread.h"

+

+#include "lwip/opt.h"

+

+#include "lwip/def.h"

+#include "lwip/mem.h"

+#include "lwip/pbuf.h"

+#include "lwip/sys.h"

+#include <lwip/stats.h>

+#include <lwip/snmp.h>

+#include <lwip/tcpip.h>

+#include "netif/etharp.h"

+#include "netif/ppp_oe.h"

+

+#define PERIODIC_TIMER_ID       1

+#define FRAME_RECEIVED_ID       2

+

+/**

+ * Stack area for the LWIP-MAC thread.

+ */

+THD_WORKING_AREA(wa_lwip_thread, LWIP_THREAD_STACK_SIZE);

+

+/*

+ * Initialization.

+ */

+static void low_level_init(struct netif *netif) {

+  /* set MAC hardware address length */

+  netif->hwaddr_len = ETHARP_HWADDR_LEN;

+

+  /* maximum transfer unit */

+  netif->mtu = 1500;

+

+  /* device capabilities */

+  /* don't set NETIF_FLAG_ETHARP if this device is not an Ethernet one */

+  netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;

+

+  /* Do whatever else is needed to initialize interface. */

+}

+

+/*

+ * Transmits a frame.

+ */

+static err_t low_level_output(struct netif *netif, struct pbuf *p) {

+  struct pbuf *q;

+  MACTransmitDescriptor td;

+

+  (void)netif;

+  if (macWaitTransmitDescriptor(&ETHD1, &td, MS2ST(LWIP_SEND_TIMEOUT)) != MSG_OK)

+    return ERR_TIMEOUT;

+

+#if ETH_PAD_SIZE

+  pbuf_header(p, -ETH_PAD_SIZE);        /* drop the padding word */

+#endif

+

+  /* Iterates through the pbuf chain. */

+  for(q = p; q != NULL; q = q->next)

+    macWriteTransmitDescriptor(&td, (uint8_t *)q->payload, (size_t)q->len);

+  macReleaseTransmitDescriptor(&td);

+

+#if ETH_PAD_SIZE

+  pbuf_header(p, ETH_PAD_SIZE);         /* reclaim the padding word */

+#endif

+

+  LINK_STATS_INC(link.xmit);

+

+  return ERR_OK;

+}

+

+/*

+ * Receives a frame.

+ */

+static struct pbuf *low_level_input(struct netif *netif) {

+  MACReceiveDescriptor rd;

+  struct pbuf *p, *q;

+  u16_t len;

+

+  (void)netif;

+  if (macWaitReceiveDescriptor(&ETHD1, &rd, TIME_IMMEDIATE) == MSG_OK) {

+    len = (u16_t)rd.size;

+

+#if ETH_PAD_SIZE

+    len += ETH_PAD_SIZE;        /* allow room for Ethernet padding */

+#endif

+

+    /* We allocate a pbuf chain of pbufs from the pool. */

+    p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);

+

+    if (p != NULL) {

+

+#if ETH_PAD_SIZE

+      pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */

+#endif

+

+      /* Iterates through the pbuf chain. */

+      for(q = p; q != NULL; q = q->next)

+        macReadReceiveDescriptor(&rd, (uint8_t *)q->payload, (size_t)q->len);

+      macReleaseReceiveDescriptor(&rd);

+

+#if ETH_PAD_SIZE

+      pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */

+#endif

+

+      LINK_STATS_INC(link.recv);

+    }

+    else {

+      macReleaseReceiveDescriptor(&rd);

+      LINK_STATS_INC(link.memerr);

+      LINK_STATS_INC(link.drop);

+    }

+    return p;

+  }

+  return NULL;

+}

+

+/*

+ * Initialization.

+ */

+static err_t ethernetif_init(struct netif *netif) {

+#if LWIP_NETIF_HOSTNAME

+  /* Initialize interface hostname */

+  netif->hostname = "lwip";

+#endif /* LWIP_NETIF_HOSTNAME */

+

+  /*

+   * Initialize the snmp variables and counters inside the struct netif.

+   * The last argument should be replaced with your link speed, in units

+   * of bits per second.

+   */

+  NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LWIP_LINK_SPEED);

+

+  netif->state = NULL;

+  netif->name[0] = LWIP_IFNAME0;

+  netif->name[1] = LWIP_IFNAME1;

+  /* We directly use etharp_output() here to save a function call.

+   * You can instead declare your own function an call etharp_output()

+   * from it if you have to do some checks before sending (e.g. if link

+   * is available...) */

+  netif->output = etharp_output;

+  netif->linkoutput = low_level_output;

+

+  /* initialize the hardware */

+  low_level_init(netif);

+

+  return ERR_OK;

+}

+

+/**

+ * @brief LWIP handling thread.

+ *

+ * @param[in] p pointer to a @p lwipthread_opts structure or @p NULL

+ * @return The function does not return.

+ */

+msg_t lwip_thread(void *p) {

+  event_timer_t evt;

+  event_listener_t el0, el1;

+  struct ip_addr ip, gateway, netmask;

+  static struct netif thisif;

+  static const MACConfig mac_config = {thisif.hwaddr};

+

+  chRegSetThreadName("lwipthread");

+

+  /* Initializes the thing.*/

+  tcpip_init(NULL, NULL);

+

+  /* TCP/IP parameters, runtime or compile time.*/

+  if (p) {

+    struct lwipthread_opts *opts = p;

+    unsigned i;

+

+    for (i = 0; i < 6; i++)

+      thisif.hwaddr[i] = opts->macaddress[i];

+    ip.addr = opts->address;

+    gateway.addr = opts->gateway;

+    netmask.addr = opts->netmask;

+  }

+  else {

+    thisif.hwaddr[0] = LWIP_ETHADDR_0;

+    thisif.hwaddr[1] = LWIP_ETHADDR_1;

+    thisif.hwaddr[2] = LWIP_ETHADDR_2;

+    thisif.hwaddr[3] = LWIP_ETHADDR_3;

+    thisif.hwaddr[4] = LWIP_ETHADDR_4;

+    thisif.hwaddr[5] = LWIP_ETHADDR_5;

+    LWIP_IPADDR(&ip);

+    LWIP_GATEWAY(&gateway);

+    LWIP_NETMASK(&netmask);

+  }

+  macStart(&ETHD1, &mac_config);

+  netif_add(&thisif, &ip, &netmask, &gateway, NULL, ethernetif_init, tcpip_input);

+

+  netif_set_default(&thisif);

+  netif_set_up(&thisif);

+

+  /* Setup event sources.*/

+  evtObjectInit(&evt, LWIP_LINK_POLL_INTERVAL);

+  evtStart(&evt);

+  chEvtRegisterMask(&evt.et_es, &el0, PERIODIC_TIMER_ID);

+  chEvtRegisterMask(macGetReceiveEventSource(&ETHD1), &el1, FRAME_RECEIVED_ID);

+  chEvtAddEvents(PERIODIC_TIMER_ID | FRAME_RECEIVED_ID);

+

+  /* Goes to the final priority after initialization.*/

+  chThdSetPriority(LWIP_THREAD_PRIORITY);

+

+  while (TRUE) {

+    eventmask_t mask = chEvtWaitAny(ALL_EVENTS);

+    if (mask & PERIODIC_TIMER_ID) {

+      bool_t current_link_status = macPollLinkStatus(&ETHD1);

+      if (current_link_status != netif_is_link_up(&thisif)) {

+        if (current_link_status)

+          tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_up,

+                                     &thisif, 0);

+        else

+          tcpip_callback_with_block((tcpip_callback_fn) netif_set_link_down,

+                                     &thisif, 0);

+      }

+    }

+    if (mask & FRAME_RECEIVED_ID) {

+      struct pbuf *p;

+      while ((p = low_level_input(&thisif)) != NULL) {

+        struct eth_hdr *ethhdr = p->payload;

+        switch (htons(ethhdr->type)) {

+        /* IP or ARP packet? */

+        case ETHTYPE_IP:

+        case ETHTYPE_ARP:

+#if PPPOE_SUPPORT

+        /* PPPoE packet? */

+        case ETHTYPE_PPPOEDISC:

+        case ETHTYPE_PPPOE:

+#endif /* PPPOE_SUPPORT */

+          /* full packet send to tcpip_thread to process */

+          if (thisif.input(p, &thisif) == ERR_OK)

+            break;

+          LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));

+        default:

+          pbuf_free(p);

+        }

+      }

+    }

+  }

+  return 0;

+}

+

+/** @} */

diff --git a/os/various/lwip_bindings/lwipthread.h b/os/various/lwip_bindings/lwipthread.h
new file mode 100644
index 000000000..ab3540c7b
--- /dev/null
+++ b/os/various/lwip_bindings/lwipthread.h
@@ -0,0 +1,131 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+

+/**

+ * @file lwipthread.h

+ * @brief LWIP wrapper thread macros and structures.

+ * @addtogroup LWIP_THREAD

+ * @{

+ */

+

+#ifndef _LWIPTHREAD_H_

+#define _LWIPTHREAD_H_

+

+#include <lwip/opt.h>

+

+/** @brief MAC thread priority.*/

+#ifndef LWIP_THREAD_PRIORITY

+#define LWIP_THREAD_PRIORITY                LOWPRIO

+#endif

+

+/** @brief MAC thread stack size. */

+#if !defined(LWIP_THREAD_STACK_SIZE) || defined(__DOXYGEN__)

+#define LWIP_THREAD_STACK_SIZE              576

+#endif

+

+/** @brief Link poll interval. */

+#if !defined(LWIP_LINK_POLL_INTERVAL) || defined(__DOXYGEN__)

+#define LWIP_LINK_POLL_INTERVAL             S2ST(5)

+#endif

+

+/** @brief IP Address. */

+#if !defined(LWIP_IPADDR) || defined(__DOXYGEN__)

+#define LWIP_IPADDR(p)                      IP4_ADDR(p, 192, 168, 1, 20)

+#endif

+

+/** @brief IP Gateway. */

+#if !defined(LWIP_GATEWAY) || defined(__DOXYGEN__)

+#define LWIP_GATEWAY(p)                     IP4_ADDR(p, 192, 168, 1, 1)

+#endif

+

+/** @brief IP netmask. */

+#if !defined(LWIP_NETMASK) || defined(__DOXYGEN__)

+#define LWIP_NETMASK(p)                     IP4_ADDR(p, 255, 255, 255, 0)

+#endif

+

+/** @brief Transmission timeout. */

+#if !defined(LWIP_SEND_TIMEOUT) || defined(__DOXYGEN__)

+#define LWIP_SEND_TIMEOUT                   50

+#endif

+

+/** @brief Link speed. */

+#if !defined(LWIP_LINK_SPEED) || defined(__DOXYGEN__)

+#define LWIP_LINK_SPEED                     100000000

+#endif

+

+/** @brief MAC Address byte 0. */

+#if !defined(LWIP_ETHADDR_0) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_0                      0xC2

+#endif

+

+/** @brief MAC Address byte 1. */

+#if !defined(LWIP_ETHADDR_1) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_1                      0xAF

+#endif

+

+/** @brief MAC Address byte 2. */

+#if !defined(LWIP_ETHADDR_2) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_2                      0x51

+#endif

+

+/** @brief MAC Address byte 3. */

+#if !defined(LWIP_ETHADDR_3) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_3                      0x03

+#endif

+

+/** @brief MAC Address byte 4. */

+#if !defined(LWIP_ETHADDR_4) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_4                      0xCF

+#endif

+

+/** @brief MAC Address byte 5. */

+#if !defined(LWIP_ETHADDR_5) || defined(__DOXYGEN__)

+#define LWIP_ETHADDR_5                      0x46

+#endif

+

+/** @brief Interface name byte 0. */

+#if !defined(LWIP_IFNAME0) || defined(__DOXYGEN__)

+#define LWIP_IFNAME0                        'm'

+#endif

+

+/** @brief Interface name byte 1. */

+#if !defined(LWIP_IFNAME1) || defined(__DOXYGEN__)

+#define LWIP_IFNAME1                        's'

+#endif

+

+/**

+ * @brief Runtime TCP/IP settings.

+ */

+struct lwipthread_opts {

+  uint8_t       *macaddress;

+  uint32_t      address;

+  uint32_t      netmask;

+  uint32_t      gateway;

+};

+

+extern THD_WORKING_AREA(wa_lwip_thread, LWIP_THREAD_STACK_SIZE);

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  msg_t lwip_thread(void *p);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* _LWIPTHREAD_H_ */

+

+/** @} */

diff --git a/os/various/lwip_bindings/readme.txt b/os/various/lwip_bindings/readme.txt
new file mode 100644
index 000000000..c2df4cdc7
--- /dev/null
+++ b/os/various/lwip_bindings/readme.txt
@@ -0,0 +1,6 @@
+This directory contains the ChibiOS/RT "official" bindings with the lwIP

+TCP/IP stack: http://savannah.nongnu.org/projects/lwip

+

+In order to use lwIP within ChibiOS/RT project, unzip lwIP under

+./ext/lwip-1.4.0 then include $(CHIBIOS)/os/various/lwip_bindings/lwip.mk

+in your makefile.