1 /* $NetBSD: isa_machdep.c,v 1.5 2008/04/28 20:23:30 martin 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 1.5 2008/04/28 20:23:30 martin 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 } 107