Merge branch 'master' of http://www.denx.de/git/u-boot

1 files changed, 458 insertions, 0 deletions

diff --git a/cpu/ixp/npe/include/IxUART.h b/cpu/ixp/npe/include/IxUART.h
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+++ b/cpu/ixp/npe/include/IxUART.h
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+/** 
+ * @file IxUART.h
+ *
+ * @date 12-OCT-01
+ *
+ * @brief Public header for the Intel IXP400 internal UART, generic driver.
+ * 
+ * Design Notes:
+ * This driver allows you to perform the following functions: 
+ *	Device Initialization,
+ *	send/receive characters.
+ *
+ * Perform Uart IOCTL for the following:
+ *	Set/Get the current baud rate,
+ *	set parity,
+ *	set the number of Stop bits,
+ *	set the character Length (5,6,7,8),
+ *	enable/disable Hardware flow control.
+ *
+ * Only Polled mode is supported for now.
+ *    
+ * 
+ * @par
+ * IXP400 SW Release version 2.0
+ * 
+ * -- Copyright Notice --
+ * 
+ * @par
+ * Copyright 2001-2005, Intel Corporation.
+ * All rights reserved.
+ * 
+ * @par
+ * 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. Neither the name of the Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * @par
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ * 
+ * @par
+ * -- End of Copyright Notice --
+*/
+
+/**
+ * @defgroup IxUARTAccAPI IXP400 UART Access (IxUARTAcc) API
+ *
+ * @brief IXP400 UARTAcc Driver Public API
+ * 
+ * @{
+ */
+
+
+/* Defaults */
+
+/**
+ * @defgroup DefaultDefines Defines for Default Values
+ *
+ * @brief Default values which can be used for UART configuration
+ *
+ * @sa ixUARTDev
+ */
+
+/**
+ * @def IX_UART_DEF_OPTS
+ *
+ * @brief The default hardware options to set the UART to -
+ * no flow control, 8 bit word, 1 stop bit, no parity 
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_DEF_OPTS (CLOCAL | CS8)
+
+/**
+ * @def IX_UART_DEF_XMIT
+ *
+ * @brief The default UART FIFO size - must be no bigger than 64
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_DEF_XMIT 64
+
+/**
+ * @def IX_UART_DEF_BAUD
+ *
+ * @brief The default UART baud rate - 9600
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_DEF_BAUD 9600
+
+/**
+ * @def IX_UART_MIN_BAUD
+ *
+ * @brief The minimum UART baud rate - 9600
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_MIN_BAUD 9600
+
+/**
+ * @def IX_UART_MAX_BAUD
+ *
+ * @brief The maximum UART baud rate - 926100
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_MAX_BAUD 926100
+
+/**
+ * @def IX_UART_XTAL
+ *
+ * @brief The UART clock speed
+ *
+ * @ingroup DefaultDefines
+ */
+#define IX_UART_XTAL 14745600
+
+
+
+/* IOCTL commands (Request codes) */
+
+/**
+ * @defgroup IoctlCommandDefines Defines for IOCTL Commands
+ *
+ * @brief IOCTL Commands (Request codes) which can be used
+ *        with @ref ixUARTIoctl
+ */
+
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_BAUD_SET
+ *
+ * @brief Set the baud rate
+ */
+#define IX_BAUD_SET	0
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_BAUD_GET
+ *
+ * @brief Get the baud rate
+ */
+#define IX_BAUD_GET	1
+
+/**
+ * @ingroup IoctlCommandDefines
+ * @def IX_MODE_SET
+ * @brief Set the UART mode of operation
+ */
+#define IX_MODE_SET	2
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_MODE_GET
+ *
+ * @brief Get the current UART mode of operation
+ */
+#define IX_MODE_GET	3
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_OPTS_SET
+ *
+ * @brief Set the UART device options
+ */
+#define IX_OPTS_SET	4
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_OPTS_GET
+ *
+ * @brief Get the UART device options
+ */
+#define IX_OPTS_GET	5
+
+/**
+ * @ingroup IoctlCommandDefines
+ *
+ * @def IX_STATS_GET
+ *
+ * @brief Get the UART statistics
+ */
+#define IX_STATS_GET	6
+
+
+/* POSIX style ioctl arguments */
+
+/**
+ * @defgroup IoctlArgDefines Defines for IOCTL Arguments
+ *
+ * @brief POSIX style IOCTL arguments which can be used
+ *        with @ref ixUARTIoctl
+ *
+ * @sa ixUARTMode
+ */
+
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CLOCAL
+ *
+ * @brief Software flow control
+ */
+#ifdef CLOCAL
+#undef CLOCAL
+#endif
+#define CLOCAL		0x1
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CREAD
+ *
+ * @brief Enable interrupt receiver
+ */
+#ifdef CREAD
+#undef CREAD
+#endif
+#define CREAD		0x2
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CSIZE
+ *
+ * @brief Characters size
+ */
+#ifdef CSIZE
+#undef CSIZE
+#endif
+#define CSIZE		0xc
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CS5
+ *
+ * @brief 5 bits
+ */
+#ifdef CS5
+#undef CS5
+#endif
+#define CS5		0x0
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CS6
+ *
+ * @brief 6 bits
+ */
+#ifdef CS6
+#undef CS6
+#endif
+#define CS6		0x4
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CS7
+ *
+ * @brief 7 bits
+ */
+#ifdef CS7
+#undef CS7
+#endif
+#define CS7		0x8
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def CS8
+ *
+ * @brief 8 bits
+ */
+#ifdef CS8
+#undef CS8
+#endif
+#define CS8		0xc
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def STOPB
+ *
+ * @brief Send two stop bits (else one)
+ */
+#define STOPB		0x20
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def PARENB
+ *
+ * @brief Parity detection enabled (else disabled)
+ */
+#ifdef PARENB
+#undef PARENB
+#endif
+#define PARENB		0x40
+
+/**
+ * @ingroup IoctlArgDefines
+ *
+ * @def PARODD
+ *
+ * @brief Odd parity  (else even)
+ */
+#ifdef PARODD
+#undef PARODD
+#endif
+#define PARODD		0x80
+
+/**
+ * @enum ixUARTMode
+ * @brief The mode to set to UART to.
+ */
+typedef enum
+{
+    INTERRUPT=0,	/**< Interrupt mode */
+    POLLED,		/**< Polled mode */
+    LOOPBACK		/**< Loopback mode */
+} ixUARTMode;
+
+/**
+ * @struct ixUARTStats
+ * @brief Statistics for the UART.
+ */
+typedef struct
+{
+    UINT32  rxCount;
+    UINT32  txCount;	
+    UINT32  overrunErr;
+    UINT32  parityErr;
+    UINT32  framingErr;
+    UINT32  breakErr;
+} ixUARTStats;
+
+/**
+ * @struct ixUARTDev
+ * @brief Device descriptor for the UART.
+ */
+typedef struct
+{
+    UINT8 *addr;	/**< device base address */
+    ixUARTMode mode;	/**< interrupt, polled or loopback */
+    int baudRate;	/**< baud rate */
+    int freq;		/**< UART clock frequency */     
+    int options;	/**< hardware options */
+    int fifoSize;	/**< FIFO xmit size */
+
+    ixUARTStats   stats;	/**< device statistics */
+} ixUARTDev;
+
+/**
+ * @ingroup IxUARTAccAPI
+ *
+ * @fn IX_STATUS ixUARTInit(ixUARTDev* pUART)
+ * 
+ * @param pUART	@ref ixUARTDev [in] - pointer to UART structure describing our device.
+ * 
+ * @brief Initialise the UART. This puts the chip in a quiescent state.
+ * 
+ * @pre The base address for the UART must contain a valid value.
+ *      Also the baud rate and hardware options must contain sensible values
+ *      otherwise the defaults will be used as defined in ixUART.h
+ *
+ * @post UART is initialized and ready to send and receive data.
+ *
+ * @note This function should only be called once per device.
+ *
+ * @retval IX_SUCCESS - UART device successfully initialised.
+ * @retval IX_FAIL - Critical error, device not initialised.
+ ***************************************************************************/
+PUBLIC IX_STATUS ixUARTInit(ixUARTDev* pUART);
+
+/**
+ * @ingroup IxUARTAccAPI
+ *
+ * @fn IX_STATUS ixUARTPollOutput(ixUARTDev* pUART, int outChar)
+ *
+ * @param pUART @ref ixUARTDev [out] - pointer to UART structure describing our device.
+ * @param outChar int [out] - character to transmit.
+ *
+ * @brief Transmit a character in polled mode.
+ *
+ * @pre UART device must be initialised.
+ *
+ * @retval IX_SUCCESS - character was successfully transmitted.
+ * @retval IX_FAIL - output buffer is full (try again).
+ ***************************************************************************/
+PUBLIC IX_STATUS ixUARTPollOutput(ixUARTDev* pUART, int outChar);
+
+/**
+ * @ingroup IxUARTAccAPI
+ *
+ * @fn IX_STATUS ixUARTPollInput(ixUARTDev* pUART, char *inChar)
+ *
+ * @param pUART	@ref ixUARTDev [in] - pointer to UART structure describing our device.
+ * @param *inChar char [in] - character read from the device.
+ *
+ * @brief Receive a character in polled mode.
+ *
+ * @pre UART device must be initialised.
+ *
+ * @retval IX_SUCCESS - character was successfully read.
+ * @retval IX_FAIL - input buffer empty (try again).
+ ***************************************************************************/
+PUBLIC IX_STATUS ixUARTPollInput(ixUARTDev* pUART, char *inChar);
+
+/**
+ * @ingroup IxUARTAccAPI
+ *
+ * @fn IX_STATUS ixUARTIoctl(ixUARTDev* pUART, int cmd, void* arg)
+ *
+ * @param pUART	@ref ixUARTDev [in] - pointer to UART structure describing our device.
+ * @param cmd int [in] - an ioctl request code.
+ * @param arg void* [in] - optional argument used to set the device mode,
+ *	 baud rate, and hardware options.
+ *
+ * @brief Perform I/O control routines on the device.
+ *
+ * @retval IX_SUCCESS - requested feature was set/read successfully.
+ * @retval IX_FAIL - error setting/reading the requested feature.
+ *
+ * @sa IoctlCommandDefines
+ * @sa IoctlArgDefines
+ ***************************************************************************/    
+PUBLIC IX_STATUS ixUARTIoctl(ixUARTDev* pUART, int cmd, void* arg);
+
+/**
+ * @} defgroup IxUARTAcc
+ */