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

1 files changed, 268 insertions, 0 deletions

diff --git a/os/hal/src/mac.c b/os/hal/src/mac.c
new file mode 100644
index 000000000..ec8e08921
--- /dev/null
+++ b/os/hal/src/mac.c
@@ -0,0 +1,268 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,

+                 2011,2012,2013 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT is free software; you can redistribute it and/or modify

+    it under the terms of the GNU General Public License as published by

+    the Free Software Foundation; either version 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT is distributed in the hope that it will be useful,

+    but WITHOUT ANY WARRANTY; without even the implied warranty of

+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+    GNU General Public License for more details.

+

+    You should have received a copy of the GNU General Public License

+    along with this program.  If not, see <http://www.gnu.org/licenses/>.

+*/

+

+/**

+ * @file    mac.c

+ * @brief   MAC Driver code.

+ *

+ * @addtogroup MAC

+ * @{

+ */

+

+#include "hal.h"

+

+#if HAL_USE_MAC || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Driver local definitions.                                                 */

+/*===========================================================================*/

+

+#if MAC_USE_ZERO_COPY && !MAC_SUPPORTS_ZERO_COPY

+#error "MAC_USE_ZERO_COPY not supported by this implementation"

+#endif

+

+/*===========================================================================*/

+/* Driver exported variables.                                                */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver local variables and types.                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver local functions.                                                   */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver interrupt handlers.                                                */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver exported functions.                                                */

+/*===========================================================================*/

+

+/**

+ * @brief   MAC Driver initialization.

+ * @note    This function is implicitly invoked by @p halInit(), there is

+ *          no need to explicitly initialize the driver.

+ *

+ * @init

+ */

+void macInit(void) {

+

+  mac_lld_init();

+}

+

+/**

+ * @brief   Initialize the standard part of a @p MACDriver structure.

+ *

+ * @param[out] macp     pointer to the @p MACDriver object

+ *

+ * @init

+ */

+void macObjectInit(MACDriver *macp) {

+

+  macp->state  = MAC_STOP;

+  macp->config = NULL;

+  chSemObjectInit(&macp->tdsem, 0);

+  chSemObjectInit(&macp->rdsem, 0);

+#if MAC_USE_EVENTS

+  chEvtObjectInit(&macp->rdevent);

+#endif

+}

+

+/**

+ * @brief   Configures and activates the MAC peripheral.

+ *

+ * @param[in] macp      pointer to the @p MACDriver object

+ * @param[in] config    pointer to the @p MACConfig object

+ *

+ * @api

+ */

+void macStart(MACDriver *macp, const MACConfig *config) {

+

+  osalDbgCheck((macp != NULL) && (config != NULL));

+

+  osalSysLock();

+  osalDbgAssert(macp->state == MAC_STOP,

+                "invalid state");

+  macp->config = config;

+  mac_lld_start(macp);

+  macp->state = MAC_ACTIVE;

+  osalSysUnlock();

+}

+

+/**

+ * @brief   Deactivates the MAC peripheral.

+ *

+ * @param[in] macp      pointer to the @p MACDriver object

+ *

+ * @api

+ */

+void macStop(MACDriver *macp) {

+

+  osalDbgCheck(macp != NULL);

+

+  osalSysLock();

+  osalDbgAssert((macp->state == MAC_STOP) || (macp->state == MAC_ACTIVE),

+                "invalid state");

+  mac_lld_stop(macp);

+  macp->state = MAC_STOP;

+  osalSysUnlock();

+}

+

+/**

+ * @brief   Allocates a transmission descriptor.

+ * @details One of the available transmission descriptors is locked and

+ *          returned. If a descriptor is not currently available then the

+ *          invoking thread is queued until one is freed.

+ *

+ * @param[in] macp      pointer to the @p MACDriver object

+ * @param[out] tdp      pointer to a @p MACTransmitDescriptor structure

+ * @param[in] time      the number of ticks before the operation timeouts,

+ *                      the following special values are allowed:

+ *                      - @a TIME_IMMEDIATE immediate timeout.

+ *                      - @a TIME_INFINITE no timeout.

+ *                      .

+ * @return              The operation status.

+ * @retval RDY_OK       the descriptor was obtained.

+ * @retval RDY_TIMEOUT  the operation timed out, descriptor not initialized.

+ *

+ * @api

+ */

+msg_t macWaitTransmitDescriptor(MACDriver *macp,

+                                MACTransmitDescriptor *tdp,

+                                systime_t time) {

+  msg_t msg;

+  systime_t now;

+

+  osalDbgCheck((macp != NULL) && (tdp != NULL));

+  osalDbgAssert(macp->state == MAC_ACTIVE, "not active");

+

+  while (((msg = mac_lld_get_transmit_descriptor(macp, tdp)) != MSG_OK) &&

+         (time > 0)) {

+    osalSysLock();

+    now = osalOsGetSystemTimeX();

+    if ((msg = chSemWaitTimeoutS(&macp->tdsem, time)) == MSG_TIMEOUT) {

+      osalSysUnlock();

+      break;

+    }

+    if (time != TIME_INFINITE)

+      time -= (osalOsGetSystemTimeX() - now);

+    osalSysUnlock();

+  }

+  return msg;

+}

+

+/**

+ * @brief   Releases a transmit descriptor and starts the transmission of the

+ *          enqueued data as a single frame.

+ *

+ * @param[in] tdp       the pointer to the @p MACTransmitDescriptor structure

+ *

+ * @api

+ */

+void macReleaseTransmitDescriptor(MACTransmitDescriptor *tdp) {

+

+  osalDbgCheck(tdp != NULL);

+

+  mac_lld_release_transmit_descriptor(tdp);

+}

+

+/**

+ * @brief   Waits for a received frame.

+ * @details Stops until a frame is received and buffered. If a frame is

+ *          not immediately available then the invoking thread is queued

+ *          until one is received.

+ *

+ * @param[in] macp      pointer to the @p MACDriver object

+ * @param[out] rdp      pointer to a @p MACReceiveDescriptor structure

+ * @param[in] time      the number of ticks before the operation timeouts,

+ *                      the following special values are allowed:

+ *                      - @a TIME_IMMEDIATE immediate timeout.

+ *                      - @a TIME_INFINITE no timeout.

+ *                      .

+ * @return              The operation status.

+ * @retval RDY_OK       the descriptor was obtained.

+ * @retval RDY_TIMEOUT  the operation timed out, descriptor not initialized.

+ *

+ * @api

+ */

+msg_t macWaitReceiveDescriptor(MACDriver *macp,

+                               MACReceiveDescriptor *rdp,

+                               systime_t time) {

+  msg_t msg;

+  systime_t now;

+

+  osalDbgCheck((macp != NULL) && (rdp != NULL));

+  osalDbgAssert(macp->state == MAC_ACTIVE, "not active");

+

+  while (((msg = mac_lld_get_receive_descriptor(macp, rdp)) != MSG_OK) &&

+         (time > 0)) {

+    osalSysLock();

+    now = osalOsGetSystemTimeX();

+    if ((msg = chSemWaitTimeoutS(&macp->rdsem, time)) == MSG_TIMEOUT) {

+      osalSysUnlock();

+      break;

+    }

+    if (time != TIME_INFINITE)

+      time -= (osalOsGetSystemTimeX() - now);

+    osalSysUnlock();

+  }

+  return msg;

+}

+

+/**

+ * @brief   Releases a receive descriptor.

+ * @details The descriptor and its buffer are made available for more incoming

+ *          frames.

+ *

+ * @param[in] rdp       the pointer to the @p MACReceiveDescriptor structure

+ *

+ * @api

+ */

+void macReleaseReceiveDescriptor(MACReceiveDescriptor *rdp) {

+

+  osalDbgCheck(rdp != NULL);

+

+  mac_lld_release_receive_descriptor(rdp);

+}

+

+/**

+ * @brief   Updates and returns the link status.

+ *

+ * @param[in] macp      pointer to the @p MACDriver object

+ * @return              The link status.

+ * @retval TRUE         if the link is active.

+ * @retval FALSE        if the link is down.

+ *

+ * @api

+ */

+bool_t macPollLinkStatus(MACDriver *macp) {

+

+  osalDbgCheck(macp != NULL);

+  osalDbgAssert(macp->state == MAC_ACTIVE, "not active");

+

+  return mac_lld_poll_link_status(macp);

+}

+

+#endif /* HAL_USE_MAC */

+

+/** @} */