Annotation of sys/dev/pci/i82365_pci.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: i82365_pci.c,v 1.9 2005/08/09 04:10:11 mickey Exp $ */
2: /* $NetBSD: i82365_pci.c,v 1.11 2000/02/24 03:42:44 itohy 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: /*
34: * XXX this driver frontend is *very* i386 dependent and should be relocated
35: */
36:
37: #include <sys/types.h>
38: #include <sys/param.h>
39: #include <sys/systm.h>
40: #include <sys/kernel.h>
41: #include <sys/device.h>
42:
43: #include <dev/ic/i82365reg.h>
44: #include <dev/ic/i82365var.h>
45:
46: #include <dev/pci/pcivar.h>
47: #include <dev/pci/pcireg.h>
48: #include <dev/pci/pcidevs.h>
49: #include <dev/pci/i82365_pcivar.h>
50:
51: #include <dev/isa/isavar.h>
52: #include <dev/isa/i82365_isavar.h>
53:
54: /*
55: * PCI constants.
56: * XXX These should be in a common file!
57: */
58: #define PCI_CBIO 0x10 /* Configuration Base IO Address */
59:
60: int pcic_pci_match(struct device *, void *, void *);
61: void pcic_pci_attach(struct device *, struct device *, void *);
62:
63: struct cfattach pcic_pci_ca = {
64: sizeof(struct pcic_pci_softc), pcic_pci_match, pcic_pci_attach
65: };
66:
67: static struct pcmcia_chip_functions pcic_pci_functions = {
68: pcic_chip_mem_alloc,
69: pcic_chip_mem_free,
70: pcic_chip_mem_map,
71: pcic_chip_mem_unmap,
72:
73: pcic_chip_io_alloc,
74: pcic_chip_io_free,
75: pcic_chip_io_map,
76: pcic_chip_io_unmap,
77:
78: /* XXX */
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_pci_match(parent, match, aux)
89: struct device *parent;
90: void *match;
91: void *aux;
92: {
93: struct pci_attach_args *pa = (struct pci_attach_args *) aux;
94:
95: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CIRRUS &&
96: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CIRRUS_CL_PD6729)
97: return (1);
98: return (0);
99: }
100:
101: void pcic_isa_config_interrupts(struct device *);
102:
103: void
104: pcic_pci_attach(parent, self, aux)
105: struct device *parent, *self;
106: void *aux;
107: {
108: struct pcic_softc *sc = (void *) self;
109: struct pcic_pci_softc *psc = (void *) self;
110: struct pcic_handle *h;
111: struct pci_attach_args *pa = aux;
112: pci_chipset_tag_t pc = pa->pa_pc;
113: bus_space_tag_t memt = pa->pa_memt;
114: bus_space_handle_t memh;
115: bus_size_t size;
116: int irq, i;
117:
118: if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
119: &sc->iot, &sc->ioh, NULL, &size, 0)) {
120: printf(": can't map i/o space\n");
121: return;
122: }
123:
124: /*
125: * XXX need some memory for mapping pcmcia cards into. Ideally, this
126: * would be completely dynamic. Practically this doesn't work,
127: * because the extent mapper doesn't know about all the devices all
128: * the time. With ISA we could finesse the issue by specifying the
129: * memory region in the config line. We can't do that here, so we
130: * cheat for now. Jason Thorpe, you are my Savior, come up with a fix
131: * :-)
132: */
133:
134: /* Map mem space. */
135: if (bus_space_map(memt, 0xd0000, 0x10000, 0, &memh)) {
136: printf(": can't map mem space");
137: bus_space_unmap(sc->iot, sc->ioh, size);
138: return;
139: }
140:
141: sc->membase = 0xd0000;
142: sc->subregionmask = (1 << (0x10000 / PCIC_MEM_PAGESIZE)) - 1;
143:
144: /* same deal for io allocation */
145:
146: sc->iobase = 0x400;
147: sc->iosize = 0xbff;
148:
149: /* end XXX */
150:
151: sc->pct = (pcmcia_chipset_tag_t) & pcic_pci_functions;
152:
153: sc->memt = memt;
154: sc->memh = memh;
155:
156: printf("\n");
157: pcic_attach(sc);
158: pcic_attach_sockets(sc);
159:
160: /*
161: * Check to see if we're using PCI or ISA interrupts. I don't
162: * know of any i386 systems that use the 6729 in PCI interrupt
163: * mode, but maybe when the PCMCIA code runs on other platforms
164: * we'll need to fix this.
165: */
166: pcic_write(&sc->handle[0], PCIC_CIRRUS_EXTENDED_INDEX,
167: PCIC_CIRRUS_EXT_CONTROL_1);
168: if ((pcic_read(&sc->handle[0], PCIC_CIRRUS_EXTENDED_DATA) &
169: PCIC_CIRRUS_EXT_CONTROL_1_PCI_INTR_MASK)) {
170: printf("%s: PCI interrupts not supported\n",
171: sc->dev.dv_xname);
172: return;
173: }
174:
175: psc->intr_est = pcic_pci_machdep_intr_est(pc);
176:
177: irq = pcic_intr_find(sc, IST_EDGE);
178:
179: /* Map and establish the interrupt. */
180: if (irq) {
181: sc->ih = pcic_pci_machdep_pcic_intr_establish(sc, pcic_intr);
182: if (sc->ih == NULL) {
183: printf("%s: couldnt map interrupt\n", sc->dev.dv_xname);
184: bus_space_unmap(memt, memh, 0x10000);
185: bus_space_unmap(sc->iot, sc->ioh, size);
186: return;
187: }
188: }
189: sc->irq = irq;
190:
191: if (irq) {
192: printf("%s: irq %d, ", sc->dev.dv_xname, irq);
193:
194: /* Set up the pcic to interrupt on card detect. */
195: for (i = 0; i < PCIC_NSLOTS; i++) {
196: h = &sc->handle[i];
197: if (h->flags & PCIC_FLAG_SOCKETP) {
198: pcic_write(h, PCIC_CSC_INTR,
199: (sc->irq << PCIC_CSC_INTR_IRQ_SHIFT) |
200: PCIC_CSC_INTR_CD_ENABLE);
201: powerhook_establish(pcic_power, h);
202: }
203: }
204: } else
205: printf("%s: no irq, ", sc->dev.dv_xname);
206:
207: printf("polling enabled\n");
208: if (sc->poll_established == 0) {
209: timeout_set(&sc->poll_timeout, pcic_poll_intr, sc);
210: timeout_add(&sc->poll_timeout, hz / 2);
211: sc->poll_established = 1;
212: }
213: }
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