From 0e34cd051ed686263001af3a721f6858db94d072 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Fri, 9 Aug 2013 08:25:09 +0000
Subject: git-svn-id:
 svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6109
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/src/pal.c | 123 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 os/hal/src/pal.c

(limited to 'os/hal/src/pal.c')

diff --git a/os/hal/src/pal.c b/os/hal/src/pal.c
new file mode 100644
index 000000000..c2eb50a85
--- /dev/null
+++ b/os/hal/src/pal.c
@@ -0,0 +1,123 @@
+/*
+    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    pal.c
+ * @brief   I/O Ports Abstraction Layer code.
+ *
+ * @addtogroup PAL
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_PAL || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Read from an I/O bus.
+ * @note    The operation is not guaranteed to be atomic on all the
+ *          architectures, for atomicity and/or portability reasons you may
+ *          need to enclose port I/O operations between @p chSysLock() and
+ *          @p chSysUnlock().
+ * @note    The function internally uses the @p palReadGroup() macro. The use
+ *          of this function is preferred when you value code size, readability
+ *          and error checking over speed.
+ *
+ * @param[in] bus       the I/O bus, pointer to a @p IOBus structure
+ * @return              The bus logical states.
+ *
+ * @api
+ */
+ioportmask_t palReadBus(IOBus *bus) {
+
+  osalDbgCheck((bus != NULL) && (bus->offset < PAL_IOPORTS_WIDTH));
+
+  return palReadGroup(bus->portid, bus->mask, bus->offset);
+}
+
+/**
+ * @brief   Write to an I/O bus.
+ * @note    The operation is not guaranteed to be atomic on all the
+ *          architectures, for atomicity and/or portability reasons you may
+ *          need to enclose port I/O operations between @p chSysLock() and
+ *          @p chSysUnlock().
+ * @note    The default implementation is non atomic and not necessarily
+ *          optimal. Low level drivers may  optimize the function by using
+ *          specific hardware or coding.
+ *
+ * @param[in] bus       the I/O bus, pointer to a @p IOBus structure
+ * @param[in] bits      the bits to be written on the I/O bus. Values exceeding
+ *                      the bus width are masked so most significant bits are
+ *                      lost.
+ *
+ * @api
+ */
+void palWriteBus(IOBus *bus, ioportmask_t bits) {
+
+  osalDbgCheck((bus != NULL) && (bus->offset < PAL_IOPORTS_WIDTH));
+
+  palWriteGroup(bus->portid, bus->mask, bus->offset, bits);
+}
+
+/**
+ * @brief   Programs a bus with the specified mode.
+ * @note    The operation is not guaranteed to be atomic on all the
+ *          architectures, for atomicity and/or portability reasons you may
+ *          need to enclose port I/O operations between @p chSysLock() and
+ *          @p chSysUnlock().
+ * @note    The default implementation is non atomic and not necessarily
+ *          optimal. Low level drivers may  optimize the function by using
+ *          specific hardware or coding.
+ *
+ * @param[in] bus       the I/O bus, pointer to a @p IOBus structure
+ * @param[in] mode      the mode
+ *
+ * @api
+ */
+void palSetBusMode(IOBus *bus, iomode_t mode) {
+
+  osalDbgCheck((bus != NULL) && (bus->offset < PAL_IOPORTS_WIDTH));
+
+  palSetGroupMode(bus->portid, bus->mask, bus->offset, mode);
+}
+
+#endif /* HAL_USE_PAL */
+
+/** @} */
-- 
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