patch-2.4.22 linux-2.4.22/arch/mips/galileo-boards/ev64120/serialGT.c

• Lines: 213
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/mips/galileo-boards/ev64120/serialGT.c
• Orig date: 2002-11-28 15:53:10.000000000 -0800

diff -urN linux-2.4.21/arch/mips/galileo-boards/ev64120/serialGT.c linux-2.4.22/arch/mips/galileo-boards/ev64120/serialGT.c
@@ -1,212 +0,0 @@
-/*
- * serialGT.c
- *
- * BRIEF MODULE DESCRIPTION
- *  Low Level Serial Port control for use
- *  with the Galileo EVB64120A MIPS eval board and
- *  its on board two channel 16552 Uart.
- *
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author: RidgeRun, Inc.
- *   glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
- *
- *  This program 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 2 of the  License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``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.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-// Note:
-//   Serial CHANNELS - 0 is the bottom connector of evb64120A.
-//                       (The one that maps to the "B" channel of the
-//                       board's uart)
-//                     1 is the top connector of evb64120A.
-//                       (The one that maps to the "A" channel of the
-//                       board's uart)
-int DEBUG_CHANNEL = 0;		// See Note Above
-int CONSOLE_CHANNEL = 1;	// See Note Above
-
-#define DUART 0xBD000000	/* Base address of Uart. */
-#define CHANNELOFFSET 0x20	/* DUART+CHANNELOFFSET gets you to the ChanA
-				   register set of the 16552 Uart device.
-				   DUART+0 gets you to the ChanB register set.
-				 */
-#define DUART_DELTA 0x4
-#define FIFO_ENABLE 0x07
-#define INT_ENABLE  0x04	/* default interrupt mask */
-
-#define RBR 0x00
-#define THR 0x00
-#define DLL 0x00
-#define IER 0x01
-#define DLM 0x01
-#define IIR 0x02
-#define FCR 0x02
-#define LCR 0x03
-#define MCR 0x04
-#define LSR 0x05
-#define MSR 0x06
-#define SCR 0x07
-
-#define LCR_DLAB 0x80
-#define XTAL 1843200
-#define LSR_THRE 0x20
-#define LSR_BI   0x10
-#define LSR_DR   0x01
-#define MCR_LOOP 0x10
-#define ACCESS_DELAY 0x10000
-
-/******************************
- Routine:
- Description:
- ******************************/
-int inreg(int channel, int reg)
-{
-	int val;
-	val =
-	    *((volatile unsigned char *) DUART +
-	      (channel * CHANNELOFFSET) + (reg * DUART_DELTA));
-	return val;
-}
-
-/******************************
- Routine:
- Description:
- ******************************/
-void outreg(int channel, int reg, unsigned char val)
-{
-	*((volatile unsigned char *) DUART + (channel * CHANNELOFFSET)
-	  + (reg * DUART_DELTA)) = val;
-}
-
-/******************************
- Routine:
- Description:
-   Initialize the device driver.
- ******************************/
-void serial_init(int channel)
-{
-	/*
-	 * Configure active port, (CHANNELOFFSET already set.)
-	 *
-	 * Set 8 bits, 1 stop bit, no parity.
-	 *
-	 * LCR<7>       0       divisor latch access bit
-	 * LCR<6>       0       break control (1=send break)
-	 * LCR<5>       0       stick parity (0=space, 1=mark)
-	 * LCR<4>       0       parity even (0=odd, 1=even)
-	 * LCR<3>       0       parity enable (1=enabled)
-	 * LCR<2>       0       # stop bits (0=1, 1=1.5)
-	 * LCR<1:0>     11      bits per character(00=5, 01=6, 10=7, 11=8)
-	 */
-	outreg(channel, LCR, 0x3);
-
-	outreg(channel, FCR, FIFO_ENABLE);	/* Enable the FIFO */
-
-	outreg(channel, IER, INT_ENABLE);	/* Enable appropriate interrupts */
-}
-
-/******************************
- Routine:
- Description:
-   Set the baud rate.
- ******************************/
-void serial_set(int channel, unsigned long baud)
-{
-	unsigned char sav_lcr;
-
-	/*
-	 * Enable access to the divisor latches by setting DLAB in LCR.
-	 *
-	 */
-	sav_lcr = inreg(channel, LCR);
-
-#if 0
-	/*
-	 * Set baud rate
-	 */
-	outreg(channel, LCR, LCR_DLAB | sav_lcr);
-	//  outreg(DLL,(XTAL/(16*2*(baud))-2));
-	outreg(channel, DLL, XTAL / (16 * baud));
-	//  outreg(DLM,(XTAL/(16*2*(baud))-2)>>8);
-	outreg(channel, DLM, (XTAL / (16 * baud)) >> 8);
-#else
-	/*
-	 * Note: Set baud rate, hardcoded here for rate of 115200
-	 * since became unsure of above "buad rate" algorithm (??).
-	 */
-	outreg(channel, LCR, 0x83);
-	outreg(channel, DLM, 0x00);	// See note above
-	outreg(channel, DLL, 0x02);	// See note above.
-	outreg(channel, LCR, 0x03);
-#endif
-
-	/*
-	 * Restore line control register
-	 */
-	outreg(channel, LCR, sav_lcr);
-}
-
-
-/******************************
- Routine:
- Description:
-   Transmit a character.
- ******************************/
-void serial_putc(int channel, int c)
-{
-	while ((inreg(channel, LSR) & LSR_THRE) == 0);
-	outreg(channel, THR, c);
-}
-
-/******************************
- Routine:
- Description:
-    Read a received character if one is
-    available.  Return -1 otherwise.
- ******************************/
-int serial_getc(int channel)
-{
-	if (inreg(channel, LSR) & LSR_DR) {
-		return inreg(channel, RBR);
-	}
-	return -1;
-}
-
-/******************************
- Routine:
- Description:
-   Used by embedded gdb client. (example; gdb-stub.c)
- ******************************/
-char getDebugChar()
-{
-	int val;
-	while ((val = serial_getc(DEBUG_CHANNEL)) == -1);	// loop until we get a character in.
-	return (char) val;
-}
-
-/******************************
- Routine:
- Description:
-   Used by embedded gdb target. (example; gdb-stub.c)
- ******************************/
-void putDebugChar(char c)
-{
-	serial_putc(DEBUG_CHANNEL, (int) c);
-}