1 /* $NetBSD: isa_machdep.c,v 1.14 2023/12/20 13:55:18 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jesse Off 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Mark Brinicombe, Charles M. Hannum and by Jason R. Thorpe of the 12 * Numerical Aerospace Simulation Facility, NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /*- 37 * Copyright (c) 1991 The Regents of the University of California. 38 * All rights reserved. 39 * 40 * This code is derived from software contributed to Berkeley by 41 * William Jolitz. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)isa.c 7.2 (Berkeley) 5/13/91 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.14 2023/12/20 13:55:18 thorpej Exp $"); 72 73 #include "opt_irqstats.h" 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/syslog.h> 79 #include <sys/device.h> 80 #include <sys/proc.h> 81 82 #include <sys/bus.h> 83 84 #include <machine/intr.h> 85 #include <machine/pio.h> 86 #include <machine/bootconfig.h> 87 #include <machine/isa_machdep.h> 88 89 #include <dev/isa/isareg.h> 90 #include <dev/isa/isavar.h> 91 92 #include <arm/ep93xx/ep93xxvar.h> 93 #include <uvm/uvm_extern.h> 94 95 /* prototypes */ 96 void isa_tsarm_init(u_int, u_int); 97 struct arm32_isa_chipset isa_chipset_tag; 98 99 static unsigned int ep93xxirq[3] = { 20, 33, 40 }; 100 /* only have 3 irqs connected to real lines on TS-7xxx */ 101 static unsigned int isairq[3] = { 5, 6, 7 }; 102 static unsigned int isairq_nhandlers[3] = { 0, 0, 0 }; 103 104 int 105 isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq) 106 { 107 int i, bestirq, count; 108 109 if (type == IST_NONE) 110 panic("intr_alloc: bogus type"); 111 112 bestirq = -1; 113 count = -1; 114 115 /* some interrupts should never be dynamically allocated */ 116 mask &= 0x00e0; 117 118 for (i = 0; i < __arraycount(isairq); i++) { 119 if ((mask & (1<<isairq[i])) == 0) 120 continue; 121 if (isairq_nhandlers[i] < count || count == -1) { 122 bestirq = isairq[i]; 123 count = isairq_nhandlers[i]; 124 } 125 } 126 127 if (bestirq == -1) 128 return (1); 129 130 *irq = bestirq; 131 132 return (0); 133 } 134 135 const struct evcnt * 136 isa_intr_evcnt(isa_chipset_tag_t ic, int irq) 137 { 138 return NULL; 139 } 140 141 /* 142 * Set up an interrupt handler to start being called. 143 */ 144 void * 145 isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, int level, int (*ih_fun)(void *), void *ih_arg) 146 { 147 int epirq = -1, i; 148 /* Find real EP93XX irq number */ 149 for(i = 0; i < __arraycount(isairq); i++) { 150 if (irq == isairq[i]) epirq = ep93xxirq[i]; 151 } 152 153 if (epirq == -1) 154 return NULL; 155 else 156 return (ep93xx_intr_establish(epirq, level, ih_fun, ih_arg)); 157 } 158 159 /* 160 * Deregister an interrupt handler. 161 */ 162 void 163 isa_intr_disestablish(isa_chipset_tag_t ic, void *arg) 164 { 165 ep93xx_intr_disestablish(arg); 166 } 167 168 void 169 isa_tsarm_init(u_int iobase16, u_int membase16) 170 { 171 isa_io_init(iobase16, membase16); 172 } 173 174 175 /* 176 * isa_intr_init() 177 * 178 * TODO: Set up ISA IRQ 5 on GPIO pin 179 */ 180 void 181 isa_intr_init(void) 182 { 183 } 184 185 void 186 isa_attach_hook(device_t parent, device_t self, struct isabus_attach_args *iba) 187 { 188 /* 189 * Since we can only have one ISA bus, we just use a single 190 * statically allocated ISA chipset structure. Pass it up 191 * now. 192 */ 193 iba->iba_ic = &isa_chipset_tag; 194 printf(": PC/104 expansion bus"); 195 } 196 197 void 198 isa_detach_hook(isa_chipset_tag_t ic, device_t self) 199 { 200 } 201
Indexes created Sat Sep 20 22:09:52 GMT 2025