1 /* $NetBSD: i82365_pci.c,v 1.33 2012/10/27 17:18:32 chs Exp $ */
2
3 /*
4 * Copyright (c) 1997 Marc Horowitz. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Marc Horowitz.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * XXX this driver frontend is *very* i386 dependent and should be relocated
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: i82365_pci.c,v 1.33 2012/10/27 17:18:32 chs Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.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(device_t, cfdata_t, void *);
61 void pcic_pci_attach(device_t, device_t, void *);
62
63 CFATTACH_DECL_NEW(pcic_pci, sizeof(struct pcic_pci_softc),
64 pcic_pci_match, pcic_pci_attach, NULL, NULL);
65
66 static const struct pcmcia_chip_functions pcic_pci_functions = {
67 pcic_chip_mem_alloc,
68 pcic_chip_mem_free,
69 pcic_chip_mem_map,
70 pcic_chip_mem_unmap,
71
72 pcic_chip_io_alloc,
73 pcic_chip_io_free,
74 pcic_chip_io_map,
75 pcic_chip_io_unmap,
76
77 /* XXX */
78 pcic_isa_chip_intr_establish,
79 pcic_isa_chip_intr_disestablish,
80
81 pcic_chip_socket_enable,
82 pcic_chip_socket_disable,
83 pcic_chip_socket_settype,
84
85 NULL, /* card_detect */
86 };
87
88 static void pcic_pci_callback(device_t);
89
90 int
pcic_pci_match(device_t parent,cfdata_t match,void * aux)91 pcic_pci_match(device_t parent, cfdata_t match, void *aux)
92 {
93 struct pci_attach_args *pa = aux;
94
95 switch (PCI_VENDOR(pa->pa_id)) {
96 case PCI_VENDOR_CIRRUS:
97 switch (PCI_PRODUCT(pa->pa_id)) {
98 case PCI_PRODUCT_CIRRUS_CL_PD6729:
99 break;
100 default:
101 return 0;
102 }
103 break;
104 default:
105 return 0;
106 }
107 return 1;
108 }
109
110 void
pcic_pci_attach(device_t parent,device_t self,void * aux)111 pcic_pci_attach(device_t parent, device_t self, void *aux)
112 {
113 struct pcic_pci_softc *psc = device_private(self);
114 struct pcic_softc *sc = &psc->sc_pcic;
115 struct pci_attach_args *pa = aux;
116 pci_chipset_tag_t pc = pa->pa_pc;
117 bus_space_tag_t memt = pa->pa_memt;
118 bus_space_handle_t memh;
119 const char *model;
120
121 sc->dev = self;
122
123 aprint_naive(": PCMCIA controller\n");
124
125 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
126 &sc->iot, &sc->ioh, NULL, NULL)) {
127 aprint_error(": can't map i/o space\n");
128 return;
129 }
130
131 /*
132 * XXX need some memory for mapping pcmcia cards into. Ideally, this
133 * would be completely dynamic. Practically this doesn't work,
134 * because the extent mapper doesn't know about all the devices all
135 * the time. With ISA we could finesse the issue by specifying the
136 * memory region in the config line. We can't do that here, so we
137 * cheat for now. Jason Thorpe, you are my Savior, come up with a fix
138 * :-)
139 */
140
141 /* Map mem space. */
142 if (bus_space_map(memt, 0xd0000, 0x4000, 0, &memh))
143 panic("pcic_pci_attach: can't map mem space");
144
145 sc->membase = 0xd0000;
146 sc->subregionmask = (1 << (0x4000 / PCIC_MEM_PAGESIZE)) - 1;
147
148 /* same deal for io allocation */
149
150 sc->iobase = 0x400;
151 sc->iosize = 0xbff;
152
153 /* end XXX */
154
155 sc->pct = &pcic_pci_functions;
156
157 sc->memt = memt;
158 sc->memh = memh;
159
160 switch (PCI_PRODUCT(pa->pa_id)) {
161 case PCI_PRODUCT_CIRRUS_CL_PD6729:
162 model = "Cirrus Logic PD6729 PCMCIA controller";
163 break;
164 default:
165 model = "Model unknown";
166 break;
167 }
168
169 aprint_normal(": %s\n", model);
170
171 /* Enable the card. */
172 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
173 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
174 PCI_COMMAND_MASTER_ENABLE);
175
176 pcic_attach(sc);
177
178 /*
179 * Check to see if we're using PCI or ISA interrupts. I don't
180 * know of any i386 systems that use the 6729 in PCI interrupt
181 * mode, but maybe when the PCMCIA code runs on other platforms
182 * we'll need to fix this.
183 */
184 pcic_write(&sc->handle[0], PCIC_CIRRUS_EXTENDED_INDEX,
185 PCIC_CIRRUS_EXT_CONTROL_1);
186 if ((pcic_read(&sc->handle[0], PCIC_CIRRUS_EXTENDED_DATA) &
187 PCIC_CIRRUS_EXT_CONTROL_1_PCI_INTR_MASK)) {
188 aprint_error_dev(self, "PCI interrupts not supported\n");
189 return;
190 }
191
192 psc->intr_est = pcic_pci_machdep_intr_est(pc);
193 sc->irq = -1;
194
195 #if 0
196 /* Map and establish the interrupt. */
197 sc->ih = pcic_pci_machdep_pcic_intr_establish(sc, pcic_intr);
198 if (sc->ih == NULL) {
199 aprint_error_dev(self, "couldn't map interrupt\n");
200 return;
201 }
202 #endif
203
204 /*
205 * Defer configuration of children until ISA has had its chance
206 * to use up whatever IO space and IRQs it wants. XXX This will
207 * only work if ISA is attached to a pcib, AND the PCI probe finds
208 * and defers the ISA attachment before this one.
209 */
210 config_defer(self, pcic_pci_callback);
211 config_interrupts(self, pcic_isa_config_interrupts);
212 }
213
214 static void
pcic_pci_callback(device_t self)215 pcic_pci_callback(device_t self)
216 {
217 struct pcic_softc *sc = device_private(self);
218
219 pcic_attach_sockets(sc);
220 }
221