Annotation of sys/arch/i386/eisa/eisa_machdep.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: eisa_machdep.c,v 1.10 2006/09/19 11:06:33 jsg Exp $ */
2: /* $NetBSD: eisa_machdep.c,v 1.10.22.2 2000/06/25 19:36:58 sommerfeld Exp $ */
3:
4: /*-
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10: * NASA Ames Research Center.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the NetBSD
23: * Foundation, Inc. and its contributors.
24: * 4. Neither the name of The NetBSD Foundation nor the names of its
25: * contributors may be used to endorse or promote products derived
26: * from this software without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38: * POSSIBILITY OF SUCH DAMAGE.
39: */
40:
41: /*
42: * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
43: *
44: * Redistribution and use in source and binary forms, with or without
45: * modification, are permitted provided that the following conditions
46: * are met:
47: * 1. Redistributions of source code must retain the above copyright
48: * notice, this list of conditions and the following disclaimer.
49: * 2. Redistributions in binary form must reproduce the above copyright
50: * notice, this list of conditions and the following disclaimer in the
51: * documentation and/or other materials provided with the distribution.
52: * 3. All advertising materials mentioning features or use of this software
53: * must display the following acknowledgement:
54: * This product includes software developed by Christopher G. Demetriou
55: * for the NetBSD Project.
56: * 4. The name of the author may not be used to endorse or promote products
57: * derived from this software without specific prior written permission
58: *
59: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69: */
70:
71: /*
72: * Machine-specific functions for EISA autoconfiguration.
73: */
74:
75: #include <sys/types.h>
76: #include <sys/param.h>
77: #include <sys/time.h>
78: #include <sys/systm.h>
79: #include <sys/errno.h>
80: #include <sys/device.h>
81:
82: #define _I386_BUS_DMA_PRIVATE
83: #include <machine/bus.h>
84: #include <machine/i8259.h>
85:
86: #include <dev/isa/isavar.h>
87: #include <dev/eisa/eisavar.h>
88:
89: /*
90: * EISA doesn't have any special needs; just use the generic versions
91: * of these funcions.
92: */
93: struct i386_bus_dma_tag eisa_bus_dma_tag = {
94: NULL, /* _cookie */
95: _bus_dmamap_create,
96: _bus_dmamap_destroy,
97: _bus_dmamap_load,
98: _bus_dmamap_load_mbuf,
99: _bus_dmamap_load_uio,
100: _bus_dmamap_load_raw,
101: _bus_dmamap_unload,
102: NULL, /* _dmamap_sync */
103: _bus_dmamem_alloc,
104: _bus_dmamem_free,
105: _bus_dmamem_map,
106: _bus_dmamem_unmap,
107: _bus_dmamem_mmap,
108: };
109:
110: void
111: eisa_attach_hook(struct device *parent, struct device *self,
112: struct eisabus_attach_args *eba)
113: {
114: /* Nothing to do */
115: }
116:
117: int
118: eisa_maxslots(eisa_chipset_tag_t ec)
119: {
120: /*
121: * Always try 16 slots.
122: */
123: return (16);
124: }
125:
126: int
127: eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, eisa_intr_handle_t *ihp)
128: {
129: #if NIOAPIC > 0
130: struct mp_intr_map *mip;
131: #endif
132:
133: if (irq >= ICU_LEN) {
134: printf("eisa_intr_map: bad IRQ %d\n", irq);
135: *ihp = -1;
136: return (1);
137: }
138: if (irq == 2) {
139: printf("eisa_intr_map: changed IRQ 2 to IRQ 9\n");
140: irq = 9;
141: }
142:
143: #if NIOAPIC > 0
144: if (mp_busses != NULL) {
145: /*
146: * Assumes 1:1 mapping between PCI bus numbers and
147: * the numbers given by the MP bios.
148: * XXX Is this a valid assumption?
149: */
150:
151: for (mip = mp_busses[bus].mb_intrs; mip != NULL;
152: mip = mip->next) {
153: if (mip->bus_pin == irq) {
154: *ihp = mip->ioapic_ih | irq;
155: return (0);
156: }
157: }
158: if (mip == NULL)
159: printf("eisa_intr_map: no MP mapping found\n");
160: }
161: #endif
162:
163: *ihp = irq;
164: return (0);
165: }
166:
167: const char *
168: eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih)
169: {
170: static char irqstr[64];
171:
172: if (ih == 0 || (ih & 0xff) >= ICU_LEN || ih == 2)
173: panic("eisa_intr_string: bogus handle 0x%x", ih);
174:
175: #if NIOAPIC > 0
176: if (ih & APIC_INT_VIA_APIC) {
177: snprintf(irqstr, sizeof irqstr, "apic %d int %d (irq %d)",
178: APIC_IRQ_APIC(ih), APIC_IRQ_PIN(ih), ih & 0xff);
179: return (irqstr);
180: }
181: #endif
182:
183: snprintf(irqstr, sizeof irqstr, "irq %d", ih);
184: return (irqstr);
185:
186: }
187:
188: void *
189: eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, int type,
190: int level, int (*func)(void *), void *arg, char *what)
191: {
192: #if NIOAPIC > 0
193: if (ih != -1) {
194: if (ih != -1 && (ih & APIC_INT_VIA_APIC)) {
195: return (apic_intr_establish(ih, type, level, func, arg,
196: what));
197: }
198: }
199: #endif
200: if (ih == 0 || ih >= ICU_LEN || ih == 2)
201: panic("eisa_intr_establish: bogus handle 0x%x", ih);
202:
203: return (isa_intr_establish(NULL, ih, type, level, func, arg, what));
204: }
205:
206: void
207: eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie)
208: {
209: return (isa_intr_disestablish(NULL, cookie));
210: }
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