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
27 /*
28 * Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
29 * specification.
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/proc.h>
38 #include <sys/condvar.h>
39 #include <sys/errno.h>
40 #include <sys/kernel.h>
41 #include <sys/lock.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
45 #include <sys/sysctl.h>
46 #include <sys/kthread.h>
47 #include <sys/bus.h>
48 #include <machine/bus.h>
49 #include <sys/rman.h>
50 #include <machine/resource.h>
51
52 #include <isa/isavar.h>
53
54 #include <dev/pci/pcivar.h>
55 #include <dev/pci/pcib_private.h>
56
57 #include <dev/pccard/pccardreg.h>
58 #include <dev/pccard/pccardvar.h>
59
60 #include <dev/exca/excareg.h>
61 #include <dev/exca/excavar.h>
62
63 #include <dev/pccbb/pccbbreg.h>
64 #include <dev/pccbb/pccbbvar.h>
65
66 #include "power_if.h"
67 #include "card_if.h"
68
69 /*****************************************************************************
70 * Configurable parameters.
71 *****************************************************************************/
72
73 /* sysctl vars */
74 static SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters");
75
76 static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
77 SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RDTUN, &isa_intr_mask, 0,
78 "Mask of allowable interrupts for this laptop. The default is generally\n\
79 correct, but some laptops do not route all the IRQ pins to the bridge to\n\
80 save wires. Sometimes you need a more restrictive mask because some of the\n\
81 hardware in your laptop may not have a driver so its IRQ might not be\n\
82 allocated.");
83
84 /*
85 * CL-PD6722's VSENSE method
86 * 0: NO VSENSE (assume a 5.0V card always)
87 * 1: 6710's method (default)
88 * 2: 6729's method
89 */
90 int pcic_pd6722_vsense = 1;
91 SYSCTL_INT(_hw_pcic, OID_AUTO, pd6722_vsense, CTLFLAG_RDTUN,
92 &pcic_pd6722_vsense, 1,
93 "Select CL-PD6722's VSENSE method. VSENSE is used to determine the\n\
94 volatage of inserted cards. The CL-PD6722 has two methods to determine the\n\
95 voltage of the card. 0 means assume a 5.0V card and do not check. 1 means\n\
96 use the same method that the CL-PD6710 uses (default). 2 means use the\n\
97 same method as the CL-PD6729. 2 is documented in the datasheet as being\n\
98 the correct way, but 1 seems to give better results on more laptops.");
99
100 /*****************************************************************************
101 * End of configurable parameters.
102 *****************************************************************************/
103
104 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
105 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
106
107 /* XXX Not sure that PNP0E03 should be claimed, except maybe on pc98 */
108 static struct isa_pnp_id pcic_ids[] = {
109 {EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */
110 {EXCA_PNP_IBM3765, NULL}, /* IBM3765 */
111 {EXCA_PNP_82365, NULL}, /* PNP0E00 */
112 {EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */
113 {EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
114 {EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
115 {EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
116 {EXCA_NEC_PC9801_102, NULL}, /* NEC8091 */
117 {EXCA_NEC_PC9821RA_E01, NULL}, /* NEC8121 */
118 {0}
119 };
120
121 /************************************************************************/
122 /* Probe/Attach */
123 /************************************************************************/
124
125 static int
cbb_isa_activate(device_t dev)126 cbb_isa_activate(device_t dev)
127 {
128 struct cbb_softc *sc = device_get_softc(dev);
129 struct resource *res;
130 int rid;
131 int i;
132
133 /* A little bogus, but go ahead and get the irq for CSC events */
134 rid = 0;
135 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
136 if (res == NULL) {
137 /*
138 * No IRQ specified, find one. This can be due to the PnP
139 * data not specifying any IRQ, or the default kernel not
140 * assinging an IRQ.
141 */
142 for (i = 0; i < 16 && res == NULL; i++) {
143 if (((1 << i) & isa_intr_mask) == 0)
144 continue;
145 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
146 1, RF_ACTIVE);
147 }
148 }
149 if (res == NULL)
150 return (ENXIO);
151 sc->irq_res = res;
152 rid = 0;
153 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
154 if (res == NULL) {
155 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
156 sc->irq_res = NULL;
157 device_printf(dev, "Cannot allocate I/O\n");
158 return (ENOMEM);
159 }
160 sc->bst = rman_get_bustag(res);
161 sc->bsh = rman_get_bushandle(res);
162 sc->base_res = res;
163 return (0);
164 }
165
166 static void
cbb_isa_deactivate(device_t dev)167 cbb_isa_deactivate(device_t dev)
168 {
169 struct cbb_softc *sc = device_get_softc(dev);
170
171 if (sc->irq_res)
172 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
173 sc->irq_res = NULL;
174 if (sc->base_res)
175 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res);
176 sc->base_res = NULL;
177 }
178
179 static int
cbb_isa_probe(device_t dev)180 cbb_isa_probe(device_t dev)
181 {
182 int error;
183 struct cbb_softc *sc = device_get_softc(dev);
184
185 /* Check isapnp ids */
186 error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
187 if (error != 0 && error != ENOENT)
188 return (error);
189
190 error = cbb_isa_activate(dev);
191 if (error != 0)
192 return (error);
193
194 /* Check to make sure that we have actual hardware */
195 error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
196 cbb_isa_deactivate(dev);
197 return (error);
198 }
199
200 static int
cbb_isa_attach(device_t dev)201 cbb_isa_attach(device_t dev)
202 {
203 return (ENOMEM);
204 }
205
206 static int
cbb_isa_suspend(device_t dev)207 cbb_isa_suspend(device_t dev)
208 {
209 return (0);
210 }
211
212 static int
cbb_isa_resume(device_t dev)213 cbb_isa_resume(device_t dev)
214 {
215 return (0);
216 }
217
218 static device_method_t cbb_methods[] = {
219 /* Device interface */
220 DEVMETHOD(device_probe, cbb_isa_probe),
221 DEVMETHOD(device_attach, cbb_isa_attach),
222 DEVMETHOD(device_detach, cbb_detach),
223 DEVMETHOD(device_suspend, cbb_isa_suspend),
224 DEVMETHOD(device_resume, cbb_isa_resume),
225
226 /* bus methods */
227 DEVMETHOD(bus_read_ivar, cbb_read_ivar),
228 DEVMETHOD(bus_write_ivar, cbb_write_ivar),
229 DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
230 DEVMETHOD(bus_release_resource, cbb_release_resource),
231 DEVMETHOD(bus_activate_resource, cbb_activate_resource),
232 DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
233 DEVMETHOD(bus_driver_added, cbb_driver_added),
234 DEVMETHOD(bus_child_detached, cbb_child_detached),
235 DEVMETHOD(bus_setup_intr, cbb_setup_intr),
236 DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
237 DEVMETHOD(bus_child_present, cbb_child_present),
238
239 /* 16-bit card interface */
240 DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
241 DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
242
243 /* power interface */
244 DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
245 DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
246
247 DEVMETHOD_END
248 };
249
250 static driver_t cbb_isa_driver = {
251 "cbb",
252 cbb_methods,
253 sizeof(struct cbb_softc)
254 };
255
256 DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0);
257 MODULE_DEPEND(cbb, exca, 1, 1, 1);
258