323 lines
9.8 KiB
C
323 lines
9.8 KiB
C
/* $Id: rmixl_com.c,v 1.5 2011/07/01 19:01:30 dyoung Exp $ */
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/*-
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* Copyright (c) 2006 Urbana-Champaign Independent Media Center.
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* Copyright (c) 2006 Garrett D'Amore.
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* All rights reserved.
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*
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* Portions of this code were written by Garrett D'Amore for the
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* Champaign-Urbana Community Wireless Network Project.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgements:
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* This product includes software developed by the Urbana-Champaign
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* Independent Media Center.
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* This product includes software developed by Garrett D'Amore.
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* 4. Urbana-Champaign Independent Media Center's name and Garrett
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* D'Amore's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)com.c 7.5 (Berkeley) 5/16/91
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: rmixl_com.c,v 1.5 2011/07/01 19:01:30 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/termios.h>
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#include <sys/ttydefaults.h>
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <dev/cons.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <mips/cpuregs.h>
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#include <mips/rmi/rmixlvar.h>
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#include <mips/rmi/rmixl_intr.h>
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#include <mips/rmi/rmixl_obiovar.h>
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#include <mips/rmi/rmixl_comvar.h>
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#include "opt_com.h"
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/* span of UART regs in bytes */
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#define RMIXL_IO_DEV_UART_SIZE (COM_NPORTS * sizeof(uint32_t))
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#define RMIXL_COM_INIT_REGS(regs, bst, ioh, addr) \
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do { \
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memset(®s, 0, sizeof(regs)); \
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COM_INIT_REGS(regs, bst, ioh, addr); \
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regs.cr_nports = RMIXL_IO_DEV_UART_SIZE; \
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rmixl_com_initmap(®s); \
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} while (0)
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struct rmixl_com_softc {
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struct com_softc sc_com;
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};
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static void rmixl_com_initmap(struct com_regs *);
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static int rmixl_com_match(device_t, cfdata_t , void *);
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static void rmixl_com_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(com_rmixl, sizeof(struct rmixl_com_softc),
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rmixl_com_match, rmixl_com_attach, NULL, NULL);
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#ifndef COM_REGMAP
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#error COM_REGMAP not defined!
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#endif
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volatile int32_t *com0addr = (int32_t *)
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MIPS_PHYS_TO_KSEG1(RMIXL_IO_DEV_PBASE + RMIXL_IO_DEV_UART_1);
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extern int comcnfreq;
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extern int comcnspeed;
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void
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rmixl_putchar_init(uint64_t io_pbase)
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{
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int rate;
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extern int comspeed(long, long, int);
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com0addr = (uint32_t *)
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MIPS_PHYS_TO_KSEG1(io_pbase + RMIXL_IO_DEV_UART_1);
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if (comcnfreq != -1) {
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rate = comspeed(comcnspeed, comcnfreq, COM_TYPE_NORMAL);
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if (rate < 0)
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return; /* XXX */
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com0addr[com_ier] = 0;
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com0addr[com_lctl] = htobe32(LCR_DLAB);
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com0addr[com_dlbl] = htobe32(rate & 0xff);
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com0addr[com_dlbh] = htobe32(rate >> 8);
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com0addr[com_lctl] = htobe32(LCR_8BITS); /* XXX */
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com0addr[com_mcr] = htobe32(MCR_DTR|MCR_RTS);
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com0addr[com_fifo] = htobe32(
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FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_1);
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}
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}
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void
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rmixl_putchar(char c)
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{
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int timo = 150000;
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while ((be32toh(com0addr[com_lsr]) & LSR_TXRDY) == 0)
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if (--timo == 0)
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break;
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com0addr[com_data] = htobe32((uint32_t)c);
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while ((be32toh(com0addr[com_lsr]) & LSR_TSRE) == 0)
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if (--timo == 0)
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break;
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}
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void
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rmixl_puts(const char *restrict s)
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{
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char c;
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while ((c = *s++) != 0)
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rmixl_putchar(c);
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}
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static char hexc[] = "0123456789abcdef";
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#define RMIXL_PUTHEX \
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u_int shift = sizeof(val) * 8; \
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rmixl_putchar('0'); \
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rmixl_putchar('x'); \
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do { \
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shift -= 4; \
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rmixl_putchar(hexc[(val >> shift) & 0xf]); \
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} while(shift != 0)
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void
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rmixl_puthex32(uint32_t val)
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{
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RMIXL_PUTHEX;
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}
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void
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rmixl_puthex64(uint64_t val)
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{
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RMIXL_PUTHEX;
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}
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int
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rmixl_com_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct obio_attach_args *obio = aux;
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bus_space_tag_t bst;
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bus_space_handle_t ioh;
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bus_addr_t addr;
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bus_size_t size;
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struct com_regs regs;
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int rv;
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bst = obio->obio_eb_bst;
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addr = obio->obio_addr;
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size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE;
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if (com_is_console(bst, addr, ®s.cr_ioh))
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return 1;
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if (bus_space_map(bst, addr, size, 0, &ioh))
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return 0; /* FAIL */
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RMIXL_COM_INIT_REGS(regs, bst, ioh, addr);
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rv = com_probe_subr(®s);
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bus_space_unmap(bst, ioh, size);
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return rv;
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}
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void
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rmixl_com_attach(device_t parent, device_t self, void *aux)
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{
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struct rmixl_com_softc *rsc = device_private(self);
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struct com_softc *sc = &rsc->sc_com;
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struct obio_attach_args *obio = aux;
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bus_space_tag_t bst;
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bus_space_handle_t ioh;
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bus_addr_t addr;
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bus_size_t size;
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sc->sc_dev = self;
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sc->sc_frequency = comcnfreq;
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bst = obio->obio_eb_bst;
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addr = obio->obio_addr;
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size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE;
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if (!com_is_console(bst, addr, &ioh)
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&& bus_space_map(bst, addr, size, 0, &ioh) != 0) {
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aprint_error(": can't map registers\n");
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return;
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}
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RMIXL_COM_INIT_REGS(sc->sc_regs, bst, ioh, addr);
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com_attach_subr(sc);
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rmixl_intr_establish(obio->obio_intr, obio->obio_tmsk,
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IPL_VM, RMIXL_TRIG_LEVEL, RMIXL_POLR_HIGH,
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comintr, sc, true);
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}
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void
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rmixl_com_initmap(struct com_regs *regsp)
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{
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/*
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* map the 4 byte register stride
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*/
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for (int i = 0; i < __arraycount(regsp->cr_map); i++)
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regsp->cr_map[i] = com_std_map[i] * 4;
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}
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void
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rmixl_com_cnattach(bus_addr_t addr, int speed, int freq,
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int type, tcflag_t mode)
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{
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bus_space_tag_t bst;
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struct com_regs regs;
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bst = (bus_space_tag_t)&rmixl_configuration.rc_obio_eb_memt;
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RMIXL_COM_INIT_REGS(regs, bst, 0, addr);
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comcnattach1(®s, speed, freq, type, mode);
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}
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