1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002-2004 M. Warner Losh.
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 /*
30 * Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
31 * specification.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/proc.h>
40 #include <sys/condvar.h>
41 #include <sys/errno.h>
42 #include <sys/kernel.h>
43 #include <sys/lock.h>
44 #include <sys/malloc.h>
45 #include <sys/module.h>
46 #include <sys/mutex.h>
47 #include <sys/sysctl.h>
48 #include <sys/kthread.h>
49 #include <sys/bus.h>
50 #include <machine/bus.h>
51 #include <sys/rman.h>
52 #include <machine/resource.h>
53
54 #include <isa/isavar.h>
55
56 #include <dev/pci/pcivar.h>
57 #include <dev/pci/pcib_private.h>
58
59 #include <dev/pccard/pccardreg.h>
60 #include <dev/pccard/pccardvar.h>
61
62 #include <dev/exca/excareg.h>
63 #include <dev/exca/excavar.h>
64
65 #include <dev/pccbb/pccbbreg.h>
66 #include <dev/pccbb/pccbbvar.h>
67
68 #include "power_if.h"
69 #include "card_if.h"
70
71 /*****************************************************************************
72 * Configurable parameters.
73 *****************************************************************************/
74
75 /* sysctl vars */
76 static SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters");
77
78 static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
79 SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RDTUN, &isa_intr_mask, 0,
80 "Mask of allowable interrupts for this laptop. The default is generally"
81 " correct, but some laptops do not route all the IRQ pins to the bridge to"
82 " save wires. Sometimes you need a more restrictive mask because some of"
83 " the hardware in your laptop may not have a driver so its IRQ might not be"
84 " allocated.");
85
86 /*
87 * CL-PD6722's VSENSE method
88 * 0: NO VSENSE (assume a 5.0V card always)
89 * 1: 6710's method (default)
90 * 2: 6729's method
91 */
92 int pcic_pd6722_vsense = 1;
93 SYSCTL_INT(_hw_pcic, OID_AUTO, pd6722_vsense, CTLFLAG_RDTUN,
94 &pcic_pd6722_vsense, 1,
95 "Select CL-PD6722's VSENSE method. VSENSE is used to determine the"
96 " voltage of inserted cards. The CL-PD6722 has two methods to determine"
97 " the voltage of the card. 0 means assume a 5.0V card and do not check. 1"
98 " means use the same method that the CL-PD6710 uses (default). 2 means use"
99 " the same method as the CL-PD6729. 2 is documented in the datasheet as"
100 " being the correct way, but 1 seems to give better results on more"
101 " laptops.");
102 /*****************************************************************************
103 * End of configurable parameters.
104 *****************************************************************************/
105
106 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
107 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
108
109 static struct isa_pnp_id pcic_ids[] = {
110 {EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */
111 {EXCA_PNP_IBM3765, NULL}, /* IBM3765 */
112 {EXCA_PNP_82365, NULL}, /* PNP0E00 */
113 {EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */
114 {EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
115 {EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
116 {EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
117 {0}
118 };
119
120 /************************************************************************/
121 /* Probe/Attach */
122 /************************************************************************/
123
124 static int
cbb_isa_activate(device_t dev)125 cbb_isa_activate(device_t dev)
126 {
127 struct cbb_softc *sc = device_get_softc(dev);
128 struct resource *res;
129 int rid;
130 int i;
131
132 /* A little bogus, but go ahead and get the irq for CSC events */
133 rid = 0;
134 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
135 if (res == NULL) {
136 /*
137 * No IRQ specified, find one. This can be due to the PnP
138 * data not specifying any IRQ, or the default kernel not
139 * assinging an IRQ.
140 */
141 for (i = 0; i < 16 && res == NULL; i++) {
142 if (((1 << i) & isa_intr_mask) == 0)
143 continue;
144 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
145 1, RF_ACTIVE);
146 }
147 }
148 if (res == NULL)
149 return (ENXIO);
150 sc->irq_res = res;
151 rid = 0;
152 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
153 if (res == NULL) {
154 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
155 sc->irq_res = NULL;
156 device_printf(dev, "Cannot allocate I/O\n");
157 return (ENOMEM);
158 }
159 sc->bst = rman_get_bustag(res);
160 sc->bsh = rman_get_bushandle(res);
161 sc->base_res = res;
162 return (0);
163 }
164
165 static void
cbb_isa_deactivate(device_t dev)166 cbb_isa_deactivate(device_t dev)
167 {
168 struct cbb_softc *sc = device_get_softc(dev);
169
170 if (sc->irq_res)
171 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
172 sc->irq_res = NULL;
173 if (sc->base_res)
174 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res);
175 sc->base_res = NULL;
176 }
177
178 static int
cbb_isa_probe(device_t dev)179 cbb_isa_probe(device_t dev)
180 {
181 int error;
182 struct cbb_softc *sc = device_get_softc(dev);
183
184 /* Check isapnp ids */
185 error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
186 if (error != 0 && error != ENOENT)
187 return (error);
188
189 error = cbb_isa_activate(dev);
190 if (error != 0)
191 return (error);
192
193 /* Check to make sure that we have actual hardware */
194 error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
195 cbb_isa_deactivate(dev);
196 return (error);
197 }
198
199 static int
cbb_isa_attach(device_t dev)200 cbb_isa_attach(device_t dev)
201 {
202 return (ENOMEM);
203 }
204
205 static int
cbb_isa_suspend(device_t dev)206 cbb_isa_suspend(device_t dev)
207 {
208 return (0);
209 }
210
211 static int
cbb_isa_resume(device_t dev)212 cbb_isa_resume(device_t dev)
213 {
214 return (0);
215 }
216
217 static device_method_t cbb_methods[] = {
218 /* Device interface */
219 DEVMETHOD(device_probe, cbb_isa_probe),
220 DEVMETHOD(device_attach, cbb_isa_attach),
221 DEVMETHOD(device_detach, cbb_detach),
222 DEVMETHOD(device_suspend, cbb_isa_suspend),
223 DEVMETHOD(device_resume, cbb_isa_resume),
224
225 /* bus methods */
226 DEVMETHOD(bus_read_ivar, cbb_read_ivar),
227 DEVMETHOD(bus_write_ivar, cbb_write_ivar),
228 DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
229 DEVMETHOD(bus_release_resource, cbb_release_resource),
230 DEVMETHOD(bus_activate_resource, cbb_activate_resource),
231 DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
232 DEVMETHOD(bus_driver_added, cbb_driver_added),
233 DEVMETHOD(bus_child_detached, cbb_child_detached),
234 DEVMETHOD(bus_setup_intr, cbb_setup_intr),
235 DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
236 DEVMETHOD(bus_child_present, cbb_child_present),
237
238 /* 16-bit card interface */
239 DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
240 DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
241
242 /* power interface */
243 DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
244 DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
245
246 DEVMETHOD_END
247 };
248
249 static driver_t cbb_isa_driver = {
250 "cbb",
251 cbb_methods,
252 sizeof(struct cbb_softc)
253 };
254
255 DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0);
256 MODULE_DEPEND(cbb, exca, 1, 1, 1);
257 ISA_PNP_INFO(pcic_ids);
258