3 * BRIEF MODULE DESCRIPTION
4 * Low level uart routines to directly access a TX[34]927 SIO.
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ahennessy@mvista.com or source@mvista.com
10 * Copyright (C) 2000-2001 Toshiba Corporation
12 * Based on arch/mips/au1000/common/puts.c
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
22 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
25 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * You should have received a copy of the GNU General Public License along
31 * with this program; if not, write to the Free Software Foundation, Inc.,
32 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 #include <linux/types.h>
36 #include <asm/jmr3927/txx927.h>
37 #include <asm/jmr3927/tx3927.h>
38 #include <asm/jmr3927/jmr3927.h>
40 #define TIMEOUT 0xffffff
43 static const char digits[16] = "0123456789abcdef";
46 #define slow_down() { int k; for (k=0; k<10000; k++); }
52 putch(const unsigned char c)
62 } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
63 tx3927_sioptr(1)->tfifo = c;
67 unsigned char getch(void)
74 dicr = tx3927_sioptr(1)->dicr;
75 tx3927_sioptr(1)->dicr = 0;
83 } while (tx3927_sioptr(1)->disr & TXx927_SIDISR_UVALID)
85 c = tx3927_sioptr(1)->rfifo;
87 /* clear RX int. status */
88 tx3927_sioptr(1)->disr &= ~TXx927_SIDISR_RDIS;
90 tx3927_sioptr(1)->dicr = dicr;
95 do_jmr3927_led_set(char n)
97 /* and with current leds */
98 jmr3927_led_and_set(n);
102 puts(unsigned char *cp)
113 } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
114 tx3927_sioptr(1)->tfifo = *cp++;
121 fputs(unsigned char *cp)
132 } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
133 tx3927_sioptr(1)->tfifo = *cp++;
144 cnt = 16; /* 16 nibbles in a 64 bit long */
149 ch = (unsigned char)(ul >> cnt * 4) & 0x0F;
160 cnt = 8; /* 8 nibbles in a 32 bit long */
165 ch = (unsigned char)(u >> cnt * 4) & 0x0F;