pci: Remove PC98 code
[dragonfly.git] / sys / bus / pci / i386 / legacy.c
CommitLineData
4d28e78f
SZ
1/*-
2 * Copyright 1998 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
14 * warranty.
15 *
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 * __FBSDID("$FreeBSD: src/sys/i386/i386/legacy.c,v 1.63.2.1.4.1 2009/04/15 03:14:26 kensmith Exp $");
29 */
30
31#include <sys/cdefs.h>
32
33/*
34 * This code implements a system driver for legacy systems that do not
35 * support ACPI or when ACPI support is not present in the kernel.
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/bus.h>
41#include <sys/kernel.h>
42#include <sys/malloc.h>
43#include <sys/module.h>
44#include <sys/rman.h>
45
46#undef DEV_MCA
47#ifdef DEV_MCA
48#include <i386/bios/mca_machdep.h>
49#endif
50
51#include <machine/legacyvar.h>
52
53static MALLOC_DEFINE(M_LEGACYDEV, "legacydrv", "legacy system device");
54struct legacy_device {
55 int lg_pcibus;
56};
57
58#define DEVTOAT(dev) ((struct legacy_device *)device_get_ivars(dev))
59
d7e2190c
SZ
60static int legacy_identify(driver_t *, device_t);
61static int legacy_probe(device_t);
62static int legacy_attach(device_t);
63static int legacy_print_child(device_t, device_t);
64static device_t legacy_add_child(device_t, device_t, int, const char *, int);
65static int legacy_read_ivar(device_t, device_t, int, uintptr_t *);
66static int legacy_write_ivar(device_t, device_t, int, uintptr_t);
4d28e78f
SZ
67
68static device_method_t legacy_methods[] = {
69 /* Device interface */
70 DEVMETHOD(device_identify, legacy_identify),
71 DEVMETHOD(device_probe, legacy_probe),
72 DEVMETHOD(device_attach, legacy_attach),
73 DEVMETHOD(device_detach, bus_generic_detach),
74 DEVMETHOD(device_shutdown, bus_generic_shutdown),
75 DEVMETHOD(device_suspend, bus_generic_suspend),
76 DEVMETHOD(device_resume, bus_generic_resume),
77
78 /* Bus interface */
79 DEVMETHOD(bus_print_child, legacy_print_child),
80 DEVMETHOD(bus_add_child, legacy_add_child),
81 DEVMETHOD(bus_read_ivar, legacy_read_ivar),
82 DEVMETHOD(bus_write_ivar, legacy_write_ivar),
83 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
84 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
85 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
86 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
87 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
88 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
89
90 { 0, 0 }
91};
92
93static driver_t legacy_driver = {
94 "legacy",
95 legacy_methods,
96 1, /* no softc */
97};
98static devclass_t legacy_devclass;
99
100DRIVER_MODULE(legacy, nexus, legacy_driver, legacy_devclass, 0, 0);
101
d7e2190c 102static int
4d28e78f
SZ
103legacy_identify(driver_t *driver, device_t parent)
104{
4d28e78f 105 /*
31af9194
SZ
106 * Basically a static device, there's no point reinstalling it
107 * on rescan.
108 */
109 if (device_get_state(parent) == DS_ATTACHED)
110 return (0);
111 if (device_get_state(parent) == DS_INPROGRESS)
112 return (0);
113
114 /*
4d28e78f
SZ
115 * Add child device with order of 11 so it gets probed
116 * after ACPI (which is at order 10).
117 */
118 if (BUS_ADD_CHILD(parent, parent, 11, "legacy", 0) == NULL)
119 panic("legacy: could not attach");
d7e2190c 120 return (0);
4d28e78f
SZ
121}
122
123static int
124legacy_probe(device_t dev)
125{
370027a6 126#ifdef ACPI_ENABLE_PCI
4d28e78f
SZ
127 device_t acpi;
128
129 /*
130 * Fail to probe if ACPI is ok.
131 */
132 acpi = devclass_get_device(devclass_find("acpi"), 0);
133 if (acpi != NULL && device_is_alive(acpi))
134 return (ENXIO);
370027a6 135#endif /* ACPI_ENABLE_PCI */
4d28e78f
SZ
136 device_set_desc(dev, "legacy system");
137 device_quiet(dev);
138 return (0);
139}
140
141static int
142legacy_attach(device_t dev)
143{
144 device_t child;
145
146 /*
147 * Let our child drivers identify any child devices that they
148 * can find. Once that is done attach any devices that we
149 * found.
150 */
151 bus_generic_probe(dev);
152 bus_generic_attach(dev);
153
4d28e78f
SZ
154 /*
155 * If we didn't see EISA or ISA on a pci bridge, create some
156 * connection points now so they show up "on motherboard".
157 */
158 if (!devclass_get_device(devclass_find("eisa"), 0)) {
159 child = BUS_ADD_CHILD(dev, dev, 0, "eisa", 0);
160 if (child == NULL)
161 panic("legacy_attach eisa");
162 device_probe_and_attach(child);
163 }
4d28e78f
SZ
164#ifdef DEV_MCA
165 if (MCA_system && !devclass_get_device(devclass_find("mca"), 0)) {
166 child = BUS_ADD_CHILD(dev, dev, 0, "mca", 0);
167 if (child == 0)
168 panic("legacy_probe mca");
169 device_probe_and_attach(child);
170 }
171#endif
172 if (!devclass_get_device(devclass_find("isa"), 0)) {
173 child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
174 if (child == NULL)
175 panic("legacy_attach isa");
176 device_probe_and_attach(child);
177 }
178
179 return 0;
180}
181
182static int
183legacy_print_child(device_t bus, device_t child)
184{
185 struct legacy_device *atdev = DEVTOAT(child);
186 int retval = 0;
187
188 retval += bus_print_child_header(bus, child);
189 if (atdev->lg_pcibus != -1)
190 retval += kprintf(" pcibus %d", atdev->lg_pcibus);
191 retval += kprintf(" on motherboard\n"); /* XXX "motherboard", ick */
192
193 return (retval);
194}
195
196static device_t
197legacy_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
198{
199 device_t child;
200 struct legacy_device *atdev;
201 atdev = kmalloc(sizeof(struct legacy_device), M_LEGACYDEV,
202 M_NOWAIT | M_ZERO);
203 if (atdev == NULL)
204 return(NULL);
205 atdev->lg_pcibus = -1;
206
207 child = device_add_child_ordered(bus, order, name, unit);
208 if (child == NULL) {
209 kfree(atdev, M_LEGACYDEV);
210 }
211 else {
212 /* should we kfree this in legacy_child_detached? */
213 device_set_ivars(child, atdev);
214 }
215 return (child);
216}
217
218static int
219legacy_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
220{
221 struct legacy_device *atdev = DEVTOAT(child);
222
223 switch (which) {
224 case LEGACY_IVAR_PCIDOMAIN:
225 *result = 0;
226 break;
227 case LEGACY_IVAR_PCIBUS:
228 *result = atdev->lg_pcibus;
229 break;
230 default:
231 return ENOENT;
232 }
233 return 0;
234}
235
236static int
237legacy_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
238{
239 struct legacy_device *atdev = DEVTOAT(child);
240
241 switch (which) {
242 case LEGACY_IVAR_PCIDOMAIN:
243 return EINVAL;
244 case LEGACY_IVAR_PCIBUS:
245 atdev->lg_pcibus = value;
246 break;
247 default:
248 return ENOENT;
249 }
250 return 0;
251}
252
253#ifdef notyet
254/*
255 * Legacy CPU attachment when ACPI is not available. Drivers like
256 * cpufreq(4) hang off this.
257 */
258static void cpu_identify(driver_t *driver, device_t parent);
259static int cpu_read_ivar(device_t dev, device_t child, int index,
260 uintptr_t *result);
261static device_t cpu_add_child(device_t bus, int order, const char *name,
262 int unit);
263static struct resource_list *cpu_get_rlist(device_t dev, device_t child);
264
265struct cpu_device {
266 struct resource_list cd_rl;
267 struct pcpu *cd_pcpu;
268};
269
270static device_method_t cpu_methods[] = {
271 /* Device interface */
272 DEVMETHOD(device_identify, cpu_identify),
273 DEVMETHOD(device_probe, bus_generic_probe),
274 DEVMETHOD(device_attach, bus_generic_attach),
275 DEVMETHOD(device_detach, bus_generic_detach),
276 DEVMETHOD(device_shutdown, bus_generic_shutdown),
277 DEVMETHOD(device_suspend, bus_generic_suspend),
278 DEVMETHOD(device_resume, bus_generic_resume),
279
280 /* Bus interface */
281 DEVMETHOD(bus_add_child, cpu_add_child),
282 DEVMETHOD(bus_read_ivar, cpu_read_ivar),
283 DEVMETHOD(bus_print_child, bus_generic_print_child),
284 DEVMETHOD(bus_get_resource_list, cpu_get_rlist),
285 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
286 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
287 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
288 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
289 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
290 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
291 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
292 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
293 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
294
295 { 0, 0 }
296};
297
298static driver_t cpu_driver = {
299 "cpu",
300 cpu_methods,
301 1, /* no softc */
302};
303static devclass_t cpu_devclass;
304DRIVER_MODULE(cpu, legacy, cpu_driver, cpu_devclass, 0, 0);
305
306static void
307cpu_identify(driver_t *driver, device_t parent)
308{
309 device_t child;
310 int i;
311
312 /*
313 * Attach a cpuX device for each CPU. We use an order of 150
314 * so that these devices are attached after the Host-PCI
315 * bridges (which are added at order 100).
316 */
317 for (i = 0; i <= mp_maxid; i++)
318 if (!CPU_ABSENT(i)) {
319 child = BUS_ADD_CHILD(parent, 150, "cpu", i);
320 if (child == NULL)
321 panic("legacy_attach cpu");
322 }
323}
324
325static device_t
326cpu_add_child(device_t bus, int order, const char *name, int unit)
327{
328 struct cpu_device *cd;
329 device_t child;
330 struct pcpu *pc;
331
332 if ((cd = kmalloc(sizeof(*cd), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL)
333 return (NULL);
334
335 resource_list_init(&cd->cd_rl);
336 pc = pcpu_find(device_get_unit(bus));
337 cd->cd_pcpu = pc;
338
339 child = device_add_child_ordered(bus, order, name, unit);
340 if (child != NULL) {
341 pc->pc_device = child;
342 device_set_ivars(child, cd);
343 } else
344 kfree(cd, M_DEVBUF);
345 return (child);
346}
347
348static struct resource_list *
349cpu_get_rlist(device_t dev, device_t child)
350{
351 struct cpu_device *cpdev;
352
353 cpdev = device_get_ivars(child);
354 return (&cpdev->cd_rl);
355}
356
357static int
358cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
359{
360 struct cpu_device *cpdev;
361
362 if (index != CPU_IVAR_PCPU)
363 return (ENOENT);
364 cpdev = device_get_ivars(child);
365 *result = (uintptr_t)cpdev->cd_pcpu;
366 return (0);
367}
368#endif