1 /*-
2 * Copyright (c) 2002-2004 M. Warner Losh.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/dev/pccbb/pccbb_isa.c,v 1.4 2005/01/11 05:33:18 imp Exp $
27 */
28
29 /*
30 * Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
31 * specification.
32 */
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/proc.h>
37 #include <sys/errno.h>
38 #include <sys/kernel.h>
39 #include <sys/lock.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/sysctl.h>
43 #include <sys/kthread.h>
44 #include <sys/bus.h>
45 #include <sys/rman.h>
46
47 #include <bus/isa/isavar.h>
48
49 #include <bus/pccard/pccardreg.h>
50 #include <bus/pccard/pccardvar.h>
51
52 #include <dev/pccard/exca/excareg.h>
53 #include <dev/pccard/exca/excavar.h>
54
55 #include <dev/pccard/pccbb/pccbbreg.h>
56 #include <dev/pccard/pccbb/pccbbvar.h>
57
58 #include "power_if.h"
59 #include "card_if.h"
60
61 /*****************************************************************************
62 * Configurable parameters.
63 *****************************************************************************/
64
65 /* sysctl vars */
66 SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters");
67
68 static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
69 TUNABLE_INT("hw.cbb.intr_mask", &isa_intr_mask);
70 SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RD, &isa_intr_mask, 0,
71 "Mask of allowable interrupts for this laptop. The default is generally"
72 " correct, but some laptops do not route all the IRQ pins to the bridge to"
73 " save wires. Sometimes you need a more restrictive mask because some of"
74 " the hardware in your laptop may not have a driver so its IRQ might not be"
75 " allocated.");
76
77 /*****************************************************************************
78 * End of configurable parameters.
79 *****************************************************************************/
80
81 #define DPRINTF(x) do { if (cbb_debug) kprintf x; } while (0)
82 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
83
84 static struct isa_pnp_id pcic_ids[] = {
85 {EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */
86 {EXCA_PNP_IBM3765, NULL}, /* IBM3765 */
87 {EXCA_PNP_82365, NULL}, /* PNP0E00 */
88 {EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */
89 {EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
90 {EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
91 {EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
92 {0}
93 };
94
95 /************************************************************************/
96 /* Probe/Attach */
97 /************************************************************************/
98
99 #if 0
100 struct resource *res;
101 int rid;
102 int i;
103
104 /* A little bogus, but go ahead and get the irq for CSC events */
105 rid = 0;
106 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
107 if (res == NULL) {
108 /*
109 * No IRQ specified, find one. This can be due to the PnP
110 * data not specifying any IRQ, or the default kernel not
111 * assinging an IRQ.
112 */
113 for (i = 0; i < 16; i++) {
114 if (((1 << i) & isa_intr_mask) == 0)
115 continue;
116 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
117 1, RF_ACTIVE);
118 if (res != NULL)
119 break;
120 }
121 if (res == NULL)
122 return (ENXIO);
123 bus_release_resource(dev, SYS_RES_IRQ, rid, res);
124 bus_set_resource(dev, SYS_RES_IRQ, 0, i, 1);
125 } else {
126 bus_release_resource(dev, SYS_RES_IRQ, rid, res);
127 }
128 if (res == NULL) {
129 device_printf(dev, "Cannot allocate mem\n");
130 return (ENOMEM);
131 }
132 #endif
133
134 static int
cbb_isa_activate(device_t dev)135 cbb_isa_activate(device_t dev)
136 {
137 return (ENOMEM);
138 }
139
140 static void
cbb_isa_deactivate(device_t dev)141 cbb_isa_deactivate(device_t dev)
142 {
143 }
144
145 static int
cbb_isa_probe(device_t dev)146 cbb_isa_probe(device_t dev)
147 {
148 int error;
149 struct cbb_softc *sc = device_get_softc(dev);
150
151 /* Check isapnp ids */
152 error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
153 if (error != 0 && error != ENOENT)
154 return (error);
155
156 error = cbb_isa_activate(dev);
157 if (error != 0)
158 return (error);
159
160 /* Check to make sure that we have actual hardware */
161 error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
162 cbb_isa_deactivate(dev);
163 return (error);
164 }
165
166 static int
cbb_isa_attach(device_t dev)167 cbb_isa_attach(device_t dev)
168 {
169 return (ENOMEM);
170 }
171
172 static device_method_t cbb_methods[] = {
173 /* Device interface */
174 DEVMETHOD(device_probe, cbb_isa_probe),
175 DEVMETHOD(device_attach, cbb_isa_attach),
176 DEVMETHOD(device_detach, cbb_detach),
177 DEVMETHOD(device_shutdown, cbb_shutdown),
178 DEVMETHOD(device_suspend, cbb_suspend),
179 DEVMETHOD(device_resume, cbb_resume),
180
181 /* bus methods */
182 DEVMETHOD(bus_print_child, bus_generic_print_child),
183 DEVMETHOD(bus_read_ivar, cbb_read_ivar),
184 DEVMETHOD(bus_write_ivar, cbb_write_ivar),
185 DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
186 DEVMETHOD(bus_release_resource, cbb_release_resource),
187 DEVMETHOD(bus_activate_resource, cbb_activate_resource),
188 DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
189 DEVMETHOD(bus_driver_added, cbb_driver_added),
190 DEVMETHOD(bus_child_detached, cbb_child_detached),
191 DEVMETHOD(bus_setup_intr, cbb_setup_intr),
192 DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
193 DEVMETHOD(bus_child_present, cbb_child_present),
194
195 /* 16-bit card interface */
196 DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
197 DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
198
199 /* power interface */
200 DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
201 DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
202
203 DEVMETHOD_END
204 };
205
206 static driver_t cbb_isa_driver = {
207 "cbb",
208 cbb_methods,
209 sizeof(struct cbb_softc)
210 };
211
212 DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, NULL, NULL);
213 MODULE_DEPEND(cbb, exca, 1, 1, 1);
214