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      1 /* $NetBSD: isa_machdep.c,v 1.6 2011/07/01 20:51:14 dyoung Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Tim Rightnour
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.6 2011/07/01 20:51:14 dyoung Exp $");
     34 
     35 #include <sys/param.h>
     36 
     37 #include <sys/bus.h>
     38 #include <machine/pio.h>
     39 
     40 #include <sys/extent.h>
     41 
     42 #include <dev/isa/isavar.h>
     43 #include <dev/isa/isareg.h>
     44 
     45 #define IO_ELCR1        0x4d0
     46 #define IO_ELCR2        0x4d1
     47 
     48 struct powerpc_isa_chipset genppc_ict;
     49 bus_space_handle_t io_icu1h, io_icu2h, io_elcrh;
     50 
     51 /*
     52  * These functions can *ONLY* be used to talk to the i8259.  Leave them
     53  * alone.  I know they are greusome.
     54  */
     55 
     56 int
     57 map_isa_ioregs(void)
     58 {
     59 	int err, noerr;
     60 
     61 	err = bus_space_map(&genppc_isa_io_space_tag, IO_ICU1, 2, 0,
     62 	    &io_icu1h);
     63 	if (err != 0)
     64 		panic("Can't map IO_ICU1 error %d\n", err);
     65 
     66 	err = bus_space_map(&genppc_isa_io_space_tag, IO_ICU2, 2, 0,
     67 	    &io_icu2h);
     68 	if (err != 0)
     69 		panic("Can't map IO_ICU2 error %d\n", err);
     70 
     71 	noerr = bus_space_map(&genppc_isa_io_space_tag, IO_ELCR1, 2, 0,
     72 	    &io_elcrh);
     73 	if (noerr != 0)
     74 		aprint_error("Can't map IO_ELCR error %d\n", noerr);
     75 
     76 	return err;
     77 }
     78 
     79 uint8_t
     80 isa_inb(uint32_t addr)
     81 {
     82 	if (addr == IO_ICU1 || addr == IO_ICU1+1)
     83 		return bus_space_read_1(&genppc_isa_io_space_tag, io_icu1h,
     84 		    addr-IO_ICU1);
     85 	if (addr == IO_ICU2 || addr == IO_ICU2+1)
     86 		return bus_space_read_1(&genppc_isa_io_space_tag, io_icu2h,
     87 		    addr-IO_ICU2);
     88 	if (addr == IO_ELCR1 || addr == IO_ELCR2)
     89 		return bus_space_read_1(&genppc_isa_io_space_tag, io_elcrh,
     90 		    addr-IO_ELCR1);
     91 	return 0;
     92 }
     93 
     94 void
     95 isa_outb(uint32_t addr, uint8_t val)
     96 {
     97 	if (addr == IO_ICU1 || addr == IO_ICU1+1)
     98 		bus_space_write_1(&genppc_isa_io_space_tag, io_icu1h,
     99 		    addr-IO_ICU1, val);
    100 	if (addr == IO_ICU2 || addr == IO_ICU2+1)
    101 		bus_space_write_1(&genppc_isa_io_space_tag, io_icu2h,
    102 		    addr-IO_ICU2, val);
    103 	if (addr == IO_ELCR1 || addr == IO_ELCR2)
    104 		bus_space_write_1(&genppc_isa_io_space_tag, io_elcrh,
    105 		    addr-IO_ELCR1, val);
    106 }
    107