1 /* $NetBSD: intiovar.h,v 1.5 2001/11/17 23:33:22 gmcgarry Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1998, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Autoconfiguration definitions and prototypes for the hp300 41 * internal i/o space. 42 */ 43 44 #include <machine/bus.h> 45 #include <machine/cpu.h> 46 47 #include <arch/hp300/dev/intioreg.h> 48 49 #define INTIO_MOD_LEN 8 50 51 /* 52 * Arguments used to attach a device to the internal i/o space. 53 */ 54 struct intio_attach_args { 55 char ia_modname[INTIO_MOD_LEN+1]; /* module name */ 56 bus_space_tag_t ia_bst; /* bus space tag */ 57 bus_addr_t ia_addr; /* physical address */ 58 bus_size_t ia_iobase; /* intio iobase */ 59 int ia_ipl; /* interrupt priority level */ 60 }; 61 62 struct intio_builtins { 63 char *ib_modname; /* module name */ 64 bus_size_t ib_offset; /* intio offset */ 65 int ib_ipl; /* interrupt priority level */ 66 }; 67 68 /* 69 * Devices such as the HIL and RTC chips are wired in a consistent 70 * fashion. These routines provide a uniform mechanism for accessing 71 * the devices that are wired to the machine. Doesn't include 72 * memory-mapped devices such as framebuffers. 73 */ 74 75 #define WAIT(bst,bsh) \ 76 while (bus_space_read_1(bst,bsh,INTIO_DEV_3xx_STAT) \ 77 & INTIO_DEV_BUSY) 78 #define DATAWAIT(bst,bsh) \ 79 while (!(bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT) \ 80 & INTIO_DEV_DATA_READY)) 81 82 static __inline int 83 intio_device_readcmd(bus_space_tag_t bst, bus_space_handle_t bsh, int cmd, 84 u_int8_t *datap) 85 { 86 u_int8_t status; 87 88 if (cmd != 0) { 89 WAIT(bst, bsh); 90 bus_space_write_1(bst, bsh, INTIO_DEV_3xx_CMD, cmd); 91 } 92 do { 93 DATAWAIT(bst, bsh); 94 status = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT); 95 *datap = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_DATA); 96 } while (((status >> INTIO_DEV_SRSHIFT) & INTIO_DEV_SRMASK) 97 != INTIO_DEV_SR_DATAAVAIL); 98 return (0); 99 } 100 101 static __inline int 102 intio_device_writecmd(bus_space_tag_t bst, bus_space_handle_t bsh, 103 int cmd, u_int8_t *datap, int len) 104 { 105 WAIT(bst,bsh); 106 bus_space_write_1(bst, bsh, INTIO_DEV_3xx_CMD, cmd); 107 while (len--) { 108 WAIT(bst,bsh); 109 bus_space_write_1(bst, bsh, INTIO_DEV_3xx_DATA, *datap++); 110 } 111 return (0); 112 } 113 114 static __inline int 115 intio_device_readstate(bus_space_tag_t bst, bus_space_handle_t bsh, 116 u_int8_t *statusp, u_int8_t *datap) 117 { 118 *statusp = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_STAT); 119 *datap = bus_space_read_1(bst, bsh, INTIO_DEV_3xx_DATA); 120 return (0); 121 } 122 #undef WAIT 123 #undef DATAWAIT 124 125 #define INTIO_DEVSIZE 4096 /* large enough for all machines */ 126 127 #define intio_intr_establish(func, arg, ipl, priority) \ 128 intr_establish((func),(arg),(ipl),(priority)) 129