sys/arch/ofppc/isa/isa_machdep.c

   1 /* $NetBSD: isa_machdep.c,v 1.4 2008/01/17 23:42:58 garbled 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 1.4 2008/01/17 23:42:58 garbled Exp $");
  34
  35 #include <sys/param.h>
  36
  37 #include <machine/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 }