Annotation of sys/dev/isa/i82365_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: i82365_isa.c,v 1.20 2005/03/25 16:41:18 mickey Exp $ */
2: /* $NetBSD: i82365_isa.c,v 1.11 1998/06/09 07:25:00 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1997 Marc Horowitz. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Marc Horowitz.
18: * 4. The name of the author may not be used to endorse or promote products
19: * derived from this software without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: #include <sys/types.h>
34: #include <sys/param.h>
35: #include <sys/systm.h>
36: #include <sys/kernel.h>
37: #include <sys/device.h>
38: #include <sys/extent.h>
39: #include <sys/malloc.h>
40:
41: #include <machine/bus.h>
42: #include <machine/intr.h>
43:
44: #include <dev/isa/isareg.h>
45: #include <dev/isa/isavar.h>
46:
47: #include <dev/pcmcia/pcmciareg.h>
48: #include <dev/pcmcia/pcmciavar.h>
49: #include <dev/pcmcia/pcmciachip.h>
50:
51: #include <dev/ic/i82365reg.h>
52: #include <dev/ic/i82365var.h>
53: #include <dev/isa/i82365_isavar.h>
54:
55: #ifdef PCICISADEBUG
56: #define DPRINTF(arg) printf arg;
57: #else
58: #define DPRINTF(arg)
59: #endif
60:
61: int pcic_isa_probe(struct device *, void *, void *);
62: void pcic_isa_attach(struct device *, struct device *, void *);
63:
64: struct cfattach pcic_isa_ca = {
65: sizeof(struct pcic_softc), pcic_isa_probe, pcic_isa_attach
66: };
67:
68: static struct pcmcia_chip_functions pcic_isa_functions = {
69: pcic_chip_mem_alloc,
70: pcic_chip_mem_free,
71: pcic_chip_mem_map,
72: pcic_chip_mem_unmap,
73:
74: pcic_chip_io_alloc,
75: pcic_chip_io_free,
76: pcic_chip_io_map,
77: pcic_chip_io_unmap,
78:
79: pcic_isa_chip_intr_establish,
80: pcic_isa_chip_intr_disestablish,
81: pcic_isa_chip_intr_string,
82:
83: pcic_chip_socket_enable,
84: pcic_chip_socket_disable,
85: };
86:
87: int
88: pcic_isa_probe(parent, match, aux)
89: struct device *parent;
90: void *match, *aux;
91: {
92: struct isa_attach_args *ia = aux;
93: bus_space_tag_t memt = ia->ia_memt, iot = ia->ia_iot;
94: bus_space_handle_t ioh, memh;
95: bus_size_t msize;
96: int val, found;
97:
98: /* Disallow wildcarded i/o address. */
99: if (ia->ia_iobase == -1 /* ISACF_PORT_DEFAULT */)
100: return (0);
101:
102: if (bus_space_map(iot, ia->ia_iobase, PCIC_IOSIZE, 0, &ioh))
103: return (0);
104:
105: if (ia->ia_msize == -1)
106: ia->ia_msize = PCIC_MEMSIZE;
107:
108: msize = ia->ia_msize;
109: if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) {
110: if (ia->ia_msize > PCIC_MEMSIZE &&
111: !bus_space_map(memt, ia->ia_maddr, PCIC_MEMSIZE, 0, &memh))
112: msize = PCIC_MEMSIZE;
113: else
114: return (0);
115: }
116: found = 0;
117:
118: /*
119: * this could be done with a loop, but it would violate the
120: * abstraction
121: */
122:
123: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C0SA + PCIC_IDENT);
124: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
125: if (pcic_ident_ok(val))
126: found++;
127:
128: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C0SB + PCIC_IDENT);
129: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
130: if (pcic_ident_ok(val))
131: found++;
132:
133: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C1SA + PCIC_IDENT);
134: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
135: if (pcic_ident_ok(val))
136: found++;
137:
138: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C1SB + PCIC_IDENT);
139: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
140: if (pcic_ident_ok(val))
141: found++;
142:
143: bus_space_unmap(iot, ioh, PCIC_IOSIZE);
144: bus_space_unmap(memt, memh, msize);
145:
146: if (!found)
147: return (0);
148: ia->ia_iosize = PCIC_IOSIZE;
149: ia->ia_msize = msize;
150: return (1);
151: }
152:
153: void
154: pcic_isa_attach(parent, self, aux)
155: struct device *parent, *self;
156: void *aux;
157: {
158: struct pcic_softc *sc = (void *)self;
159: struct pcic_handle *h;
160: struct isa_attach_args *ia = aux;
161: isa_chipset_tag_t ic = ia->ia_ic;
162: bus_space_tag_t iot = ia->ia_iot;
163: bus_space_tag_t memt = ia->ia_memt;
164: bus_space_handle_t ioh;
165: bus_space_handle_t memh;
166: int irq, i;
167:
168: /* Map i/o space. */
169: if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
170: printf(": can't map i/o space\n");
171: return;
172: }
173:
174: /* Map mem space. */
175: if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) {
176: printf(": can't map mem space\n");
177: return;
178: }
179:
180: sc->membase = ia->ia_maddr;
181: sc->subregionmask = (1 << (ia->ia_msize / PCIC_MEM_PAGESIZE)) - 1;
182:
183: sc->intr_est = ic;
184: sc->pct = (pcmcia_chipset_tag_t)&pcic_isa_functions;
185:
186: sc->iot = iot;
187: sc->ioh = ioh;
188: sc->memt = memt;
189: sc->memh = memh;
190:
191: printf("\n");
192:
193: pcic_attach(sc);
194: pcic_isa_bus_width_probe(sc, iot, ioh, ia->ia_iobase, ia->ia_iosize);
195: pcic_attach_sockets(sc);
196:
197: /*
198: * Allocate an irq. It will be used by both controllers. I could
199: * use two different interrupts, but interrupts are relatively
200: * scarce, shareable, and for PCIC controllers, very infrequent.
201: */
202: irq = ia->ia_irq;
203: if (irq == IRQUNK)
204: irq = pcic_intr_find(sc, IST_EDGE);
205:
206: if (irq) {
207: sc->ih = isa_intr_establish(ic, irq, IST_EDGE, IPL_TTY,
208: pcic_intr, sc, sc->dev.dv_xname);
209: if (!sc->ih)
210: irq = 0;
211: }
212: sc->irq = irq;
213:
214: if (irq) {
215: printf("%s: irq %d, ", sc->dev.dv_xname, irq);
216:
217: /* Set up the pcic to interrupt on card detect. */
218: for (i = 0; i < PCIC_NSLOTS; i++) {
219: h = &sc->handle[i];
220: if (h->flags & PCIC_FLAG_SOCKETP) {
221: pcic_write(h, PCIC_CSC_INTR,
222: (sc->irq << PCIC_CSC_INTR_IRQ_SHIFT) |
223: PCIC_CSC_INTR_CD_ENABLE);
224: powerhook_establish(pcic_power, h);
225: }
226: }
227: } else
228: printf("%s: no irq, ", sc->dev.dv_xname);
229:
230: printf("polling enabled\n");
231: if (sc->poll_established == 0) {
232: timeout_set(&sc->poll_timeout, pcic_poll_intr, sc);
233: timeout_add(&sc->poll_timeout, hz / 2);
234: sc->poll_established = 1;
235: }
236: }
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