[dragonfly.git] / sys / bus / pci / x86_64 / legacy.c

/*-
 * Copyright 1998 Massachusetts Institute of Technology
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby
 * granted, provided that both the above copyright notice and this
 * permission notice appear in all copies, that both the above
 * copyright notice and this permission notice appear in all
 * supporting documentation, and that the name of M.I.T. not be used
 * in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.  M.I.T. makes
 * no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied
 * warranty.
 *
 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/i386/i386/legacy.c,v 1.63.2.1.4.1 2009/04/15 03:14:26 kensmith Exp $
 */

/*
 * This code implements a system driver for legacy systems that do not
 * support ACPI or when ACPI support is not present in the kernel.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>

#undef DEV_MCA
#ifdef DEV_MCA
#include <i386/bios/mca_machdep.h>
#endif

#include "legacyvar.h"

static MALLOC_DEFINE(M_LEGACYDEV, "legacydrv", "legacy system device");
struct legacy_device {
	int			lg_pcibus;
};

#define DEVTOAT(dev)	((struct legacy_device *)device_get_ivars(dev))

static int	legacy_identify(driver_t *, device_t);
static int	legacy_probe(device_t);
static int	legacy_attach(device_t);
static int	legacy_print_child(device_t, device_t);
static device_t	legacy_add_child(device_t, device_t, int, const char *, int);
static int	legacy_read_ivar(device_t, device_t, int, uintptr_t *);
static int	legacy_write_ivar(device_t, device_t, int, uintptr_t);

static device_method_t legacy_methods[] = {
	/* Device interface */
	DEVMETHOD(device_identify,	legacy_identify),
	DEVMETHOD(device_probe,		legacy_probe),
	DEVMETHOD(device_attach,	legacy_attach),
	DEVMETHOD(device_detach,	bus_generic_detach),
	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
	DEVMETHOD(device_suspend,	bus_generic_suspend),
	DEVMETHOD(device_resume,	bus_generic_resume),

	/* Bus interface */
	DEVMETHOD(bus_print_child,	legacy_print_child),
	DEVMETHOD(bus_add_child,	legacy_add_child),
	DEVMETHOD(bus_read_ivar,	legacy_read_ivar),
	DEVMETHOD(bus_write_ivar,	legacy_write_ivar),
	DEVMETHOD(bus_alloc_resource,	bus_generic_alloc_resource),
	DEVMETHOD(bus_release_resource,	bus_generic_release_resource),
	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),

	{ 0, 0 }
};

static driver_t legacy_driver = {
	"legacy",
	legacy_methods,
	1,			/* no softc */
};
static devclass_t legacy_devclass;

DRIVER_MODULE(legacy, nexus, legacy_driver, legacy_devclass, 0, 0);

static int
legacy_identify(driver_t *driver, device_t parent)
{
	/*
	 * Basically a static device, there's no point reinstalling it
	 * on rescan.
	 */
	if (device_get_state(parent) == DS_ATTACHED)
		return (0);
	if (device_get_state(parent) == DS_INPROGRESS)
		return (0);

	/*
	 * Add child device with order of 11 so it gets probed
	 * after ACPI (which is at order 10).
	 */
	if (BUS_ADD_CHILD(parent, parent, 11, "legacy", 0) == NULL)
		panic("legacy: could not attach");
	return (0);
}

static int
legacy_probe(device_t dev)
{
#ifdef ACPI_ENABLE_PCI
	device_t acpi;

	/*
	 * Fail to probe if ACPI is ok.
	 */
	acpi = devclass_get_device(devclass_find("acpi"), 0);
	if (acpi != NULL && device_is_alive(acpi))
		return (ENXIO);
#endif	/* ACPI_ENABLE_PCI */
	device_set_desc(dev, "legacy system");
	device_quiet(dev);
	return (0);
}

static int
legacy_attach(device_t dev)
{
	device_t child;

	/*
	 * Let our child drivers identify any child devices that they
	 * can find.  Once that is done attach any devices that we
	 * found.
	 */
	bus_generic_probe(dev);
	bus_generic_attach(dev);

	/*
	 * If we didn't see EISA or ISA on a pci bridge, create some
	 * connection points now so they show up "on motherboard".
	 */
	if (!devclass_get_device(devclass_find("eisa"), 0)) {
		child = BUS_ADD_CHILD(dev, dev, 0, "eisa", 0);
		if (child == NULL)
			panic("legacy_attach eisa");
		device_probe_and_attach(child);
	}
#ifdef DEV_MCA
	if (MCA_system && !devclass_get_device(devclass_find("mca"), 0)) {
		child = BUS_ADD_CHILD(dev, dev, 0, "mca", 0);
		if (child == 0)
			panic("legacy_probe mca");
		device_probe_and_attach(child);
	}
#endif
	if (!devclass_get_device(devclass_find("isa"), 0)) {
		child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
		if (child == NULL)
			panic("legacy_attach isa");
		device_probe_and_attach(child);
	}

	return 0;
}

static int
legacy_print_child(device_t bus, device_t child)
{
	struct legacy_device *atdev = DEVTOAT(child);
	int retval = 0;

	retval += bus_print_child_header(bus, child);
	if (atdev->lg_pcibus != -1)
		retval += kprintf(" pcibus %d", atdev->lg_pcibus);
	retval += kprintf(" on motherboard\n");	/* XXX "motherboard", ick */

	return (retval);
}

static device_t
legacy_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
{
	device_t child;
	struct legacy_device *atdev;
	atdev = kmalloc(sizeof(struct legacy_device), M_LEGACYDEV,
	    M_NOWAIT | M_ZERO);
	if (atdev == NULL)
		return(NULL);
	atdev->lg_pcibus = -1;

	child = device_add_child_ordered(bus, order, name, unit);
	if (child == NULL) {
		kfree(atdev, M_LEGACYDEV);
	}
	else {
		/* should we kfree this in legacy_child_detached? */
		device_set_ivars(child, atdev);
	}
	return (child);
}

static int
legacy_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
	struct legacy_device *atdev = DEVTOAT(child);

	switch (which) {
	case LEGACY_IVAR_PCIDOMAIN:
		*result = 0;
		break;
	case LEGACY_IVAR_PCIBUS:
		*result = atdev->lg_pcibus;
		break;
	default:
		return ENOENT;
	}
	return 0;
}

static int
legacy_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
	struct legacy_device *atdev = DEVTOAT(child);

	switch (which) {
	case LEGACY_IVAR_PCIDOMAIN:
		return EINVAL;
	case LEGACY_IVAR_PCIBUS:
		atdev->lg_pcibus = value;
		break;
	default:
		return ENOENT;
	}
	return 0;
}

#ifdef notyet
/*
 * Legacy CPU attachment when ACPI is not available.  Drivers like
 * cpufreq(4) hang off this.
 */
static void	cpu_identify(driver_t *driver, device_t parent);
static int	cpu_read_ivar(device_t dev, device_t child, int index,
		    uintptr_t *result);
static device_t cpu_add_child(device_t bus, int order, const char *name,
		    int unit);
static struct resource_list *cpu_get_rlist(device_t dev, device_t child);

struct cpu_device {
	struct resource_list cd_rl;
	struct pcpu *cd_pcpu;
};

static device_method_t cpu_methods[] = {
	/* Device interface */
	DEVMETHOD(device_identify,	cpu_identify),
	DEVMETHOD(device_probe,		bus_generic_probe),
	DEVMETHOD(device_attach,	bus_generic_attach),
	DEVMETHOD(device_detach,	bus_generic_detach),
	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
	DEVMETHOD(device_suspend,	bus_generic_suspend),
	DEVMETHOD(device_resume,	bus_generic_resume),

	/* Bus interface */
	DEVMETHOD(bus_add_child,	cpu_add_child),
	DEVMETHOD(bus_read_ivar,	cpu_read_ivar),
	DEVMETHOD(bus_print_child,	bus_generic_print_child),
	DEVMETHOD(bus_get_resource_list, cpu_get_rlist),
	DEVMETHOD(bus_get_resource,	bus_generic_rl_get_resource),
	DEVMETHOD(bus_set_resource,	bus_generic_rl_set_resource),
	DEVMETHOD(bus_alloc_resource,	bus_generic_rl_alloc_resource),
	DEVMETHOD(bus_release_resource,	bus_generic_rl_release_resource),
	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),

	{ 0, 0 }
};

static driver_t cpu_driver = {
	"cpu",
	cpu_methods,
	1,		/* no softc */
};
static devclass_t cpu_devclass;
DRIVER_MODULE(cpu, legacy, cpu_driver, cpu_devclass, 0, 0);

static void
cpu_identify(driver_t *driver, device_t parent)
{
	device_t child;
	int i;

	/*
	 * Attach a cpuX device for each CPU.  We use an order of 150
	 * so that these devices are attached after the Host-PCI
	 * bridges (which are added at order 100).
	 */
	for (i = 0; i <= mp_maxid; i++)
		if (!CPU_ABSENT(i)) {
			child = BUS_ADD_CHILD(parent, 150, "cpu", i);
			if (child == NULL)
				panic("legacy_attach cpu");
		}
}

static device_t
cpu_add_child(device_t bus, int order, const char *name, int unit)
{
	struct cpu_device *cd;
	device_t child;
	struct pcpu *pc;

	if ((cd = kmalloc(sizeof(*cd), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL)
		return (NULL);

	resource_list_init(&cd->cd_rl);
	pc = pcpu_find(device_get_unit(bus));
	cd->cd_pcpu = pc;

	child = device_add_child_ordered(bus, order, name, unit);
	if (child != NULL) {
		pc->pc_device = child;
		device_set_ivars(child, cd);
	} else
		kfree(cd, M_DEVBUF);
	return (child);
}

static struct resource_list *
cpu_get_rlist(device_t dev, device_t child)
{
	struct cpu_device *cpdev;

	cpdev = device_get_ivars(child);
	return (&cpdev->cd_rl);
}

static int
cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
{
	struct cpu_device *cpdev;

	if (index != CPU_IVAR_PCPU)
		return (ENOENT);
	cpdev = device_get_ivars(child);
	*result = (uintptr_t)cpdev->cd_pcpu;
	return (0);
}
#endif
Commit	Line	Data
2ac05e91 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	*
	29	* $FreeBSD: src/sys/i386/i386/legacy.c,v 1.63.2.1.4.1 2009/04/15 03:14:26 kensmith Exp $
	30	*/
	31
	32	/*
	33	* This code implements a system driver for legacy systems that do not
	34	* support ACPI or when ACPI support is not present in the kernel.
	35	*/
	36
	37	#include <sys/param.h>
	38	#include <sys/systm.h>
	39	#include <sys/bus.h>
	40	#include <sys/kernel.h>
	41	#include <sys/malloc.h>
	42	#include <sys/module.h>
	43	#include <sys/rman.h>
	44
	45	#undef DEV_MCA
	46	#ifdef DEV_MCA
	47	#include <i386/bios/mca_machdep.h>
	48	#endif
	49
	50	#include "legacyvar.h"
	51
	52	static MALLOC_DEFINE(M_LEGACYDEV, "legacydrv", "legacy system device");
	53	struct legacy_device {
	54	int lg_pcibus;
	55	};
	56
	57	#define DEVTOAT(dev) ((struct legacy_device *)device_get_ivars(dev))
	58
	59	static int legacy_identify(driver_t *, device_t);
	60	static int legacy_probe(device_t);
	61	static int legacy_attach(device_t);
	62	static int legacy_print_child(device_t, device_t);
	63	static device_t legacy_add_child(device_t, device_t, int, const char *, int);
	64	static int legacy_read_ivar(device_t, device_t, int, uintptr_t *);
65	static int legacy_write_ivar(device_t, device_t, int, uintptr_t);
66
67	static device_method_t legacy_methods[] = {
68	/* Device interface */
69	DEVMETHOD(device_identify, legacy_identify),
70	DEVMETHOD(device_probe, legacy_probe),
71	DEVMETHOD(device_attach, legacy_attach),
72	DEVMETHOD(device_detach, bus_generic_detach),
73	DEVMETHOD(device_shutdown, bus_generic_shutdown),
74	DEVMETHOD(device_suspend, bus_generic_suspend),
75	DEVMETHOD(device_resume, bus_generic_resume),
76
77	/* Bus interface */
78	DEVMETHOD(bus_print_child, legacy_print_child),
79	DEVMETHOD(bus_add_child, legacy_add_child),
80	DEVMETHOD(bus_read_ivar, legacy_read_ivar),
81	DEVMETHOD(bus_write_ivar, legacy_write_ivar),
82	DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
83	DEVMETHOD(bus_release_resource, bus_generic_release_resource),
84	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
85	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
86	DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
87	DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
88
89	{ 0, 0 }
90	};
91
92	static driver_t legacy_driver = {
93	"legacy",
94	legacy_methods,
95	1, /* no softc */
96	};
97	static devclass_t legacy_devclass;
98
99	DRIVER_MODULE(legacy, nexus, legacy_driver, legacy_devclass, 0, 0);
100
101	static int
102	legacy_identify(driver_t *driver, device_t parent)
103	{
104	/*
105	* Basically a static device, there's no point reinstalling it
106	* on rescan.
107	*/
108	if (device_get_state(parent) == DS_ATTACHED)
109	return (0);
110	if (device_get_state(parent) == DS_INPROGRESS)
111	return (0);
112
113	/*
114	* Add child device with order of 11 so it gets probed
115	* after ACPI (which is at order 10).
116	*/
117	if (BUS_ADD_CHILD(parent, parent, 11, "legacy", 0) == NULL)
118	panic("legacy: could not attach");
119	return (0);
120	}
121
122	static int
123	legacy_probe(device_t dev)
124	{
125	#ifdef ACPI_ENABLE_PCI
126	device_t acpi;
127
128	/*
129	* Fail to probe if ACPI is ok.
130	*/
131	acpi = devclass_get_device(devclass_find("acpi"), 0);
132	if (acpi != NULL && device_is_alive(acpi))
133	return (ENXIO);
134	#endif /* ACPI_ENABLE_PCI */
135	device_set_desc(dev, "legacy system");
136	device_quiet(dev);
137	return (0);
138	}
139
140	static int
141	legacy_attach(device_t dev)
142	{
143	device_t child;
144
145	/*
146	* Let our child drivers identify any child devices that they
147	* can find. Once that is done attach any devices that we
148	* found.
149	*/
150	bus_generic_probe(dev);
151	bus_generic_attach(dev);
152
153	/*
154	* If we didn't see EISA or ISA on a pci bridge, create some
155	* connection points now so they show up "on motherboard".
156	*/
157	if (!devclass_get_device(devclass_find("eisa"), 0)) {
158	child = BUS_ADD_CHILD(dev, dev, 0, "eisa", 0);
159	if (child == NULL)
160	panic("legacy_attach eisa");
161	device_probe_and_attach(child);
162	}
163	#ifdef DEV_MCA
164	if (MCA_system && !devclass_get_device(devclass_find("mca"), 0)) {
165	child = BUS_ADD_CHILD(dev, dev, 0, "mca", 0);
166	if (child == 0)
167	panic("legacy_probe mca");
168	device_probe_and_attach(child);
169	}
170	#endif
171	if (!devclass_get_device(devclass_find("isa"), 0)) {
172	child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
173	if (child == NULL)
174	panic("legacy_attach isa");
175	device_probe_and_attach(child);
176	}
177
178	return 0;
179	}
180
181	static int
182	legacy_print_child(device_t bus, device_t child)
183	{
184	struct legacy_device *atdev = DEVTOAT(child);
185	int retval = 0;
186
187	retval += bus_print_child_header(bus, child);
188	if (atdev->lg_pcibus != -1)
189	retval += kprintf(" pcibus %d", atdev->lg_pcibus);
190	retval += kprintf(" on motherboard\n"); /* XXX "motherboard", ick */
191
192	return (retval);
193	}
194
195	static device_t
196	legacy_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
197	{
198	device_t child;
199	struct legacy_device *atdev;
200	atdev = kmalloc(sizeof(struct legacy_device), M_LEGACYDEV,
201	M_NOWAIT \| M_ZERO);
202	if (atdev == NULL)
203	return(NULL);
204	atdev->lg_pcibus = -1;
205
206	child = device_add_child_ordered(bus, order, name, unit);
207	if (child == NULL) {
208	kfree(atdev, M_LEGACYDEV);
209	}
210	else {
211	/* should we kfree this in legacy_child_detached? */
212	device_set_ivars(child, atdev);
213	}
214	return (child);
215	}
216
217	static int
218	legacy_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
219	{
220	struct legacy_device *atdev = DEVTOAT(child);
221
222	switch (which) {
223	case LEGACY_IVAR_PCIDOMAIN:
224	*result = 0;
225	break;
226	case LEGACY_IVAR_PCIBUS:
227	*result = atdev->lg_pcibus;
228	break;
229	default:
230	return ENOENT;
231	}
232	return 0;
233	}
234
235	static int
236	legacy_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
237	{
238	struct legacy_device *atdev = DEVTOAT(child);
239
240	switch (which) {
241	case LEGACY_IVAR_PCIDOMAIN:
242	return EINVAL;
243	case LEGACY_IVAR_PCIBUS:
244	atdev->lg_pcibus = value;
245	break;
246	default:
247	return ENOENT;
248	}
249	return 0;
250	}
251
252	#ifdef notyet
253	/*
254	* Legacy CPU attachment when ACPI is not available. Drivers like
255	* cpufreq(4) hang off this.
256	*/
257	static void cpu_identify(driver_t *driver, device_t parent);
258	static int cpu_read_ivar(device_t dev, device_t child, int index,
259	uintptr_t *result);
260	static device_t cpu_add_child(device_t bus, int order, const char *name,
261	int unit);
262	static struct resource_list *cpu_get_rlist(device_t dev, device_t child);
263
264	struct cpu_device {
265	struct resource_list cd_rl;
266	struct pcpu *cd_pcpu;
267	};
268
269	static device_method_t cpu_methods[] = {
270	/* Device interface */
271	DEVMETHOD(device_identify, cpu_identify),
272	DEVMETHOD(device_probe, bus_generic_probe),
273	DEVMETHOD(device_attach, bus_generic_attach),
274	DEVMETHOD(device_detach, bus_generic_detach),
275	DEVMETHOD(device_shutdown, bus_generic_shutdown),
276	DEVMETHOD(device_suspend, bus_generic_suspend),
277	DEVMETHOD(device_resume, bus_generic_resume),
278
279	/* Bus interface */
280	DEVMETHOD(bus_add_child, cpu_add_child),
281	DEVMETHOD(bus_read_ivar, cpu_read_ivar),
282	DEVMETHOD(bus_print_child, bus_generic_print_child),
283	DEVMETHOD(bus_get_resource_list, cpu_get_rlist),
284	DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
285	DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
286	DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
287	DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
288	DEVMETHOD(bus_driver_added, bus_generic_driver_added),
289	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
290	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
291	DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
292	DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
293
294	{ 0, 0 }
295	};
296
297	static driver_t cpu_driver = {
298	"cpu",
299	cpu_methods,
300	1, /* no softc */
301	};
302	static devclass_t cpu_devclass;
303	DRIVER_MODULE(cpu, legacy, cpu_driver, cpu_devclass, 0, 0);
304
305	static void
306	cpu_identify(driver_t *driver, device_t parent)
307	{
308	device_t child;
309	int i;
310
311	/*
312	* Attach a cpuX device for each CPU. We use an order of 150
313	* so that these devices are attached after the Host-PCI
314	* bridges (which are added at order 100).
315	*/
316	for (i = 0; i <= mp_maxid; i++)
317	if (!CPU_ABSENT(i)) {
318	child = BUS_ADD_CHILD(parent, 150, "cpu", i);
319	if (child == NULL)
320	panic("legacy_attach cpu");
321	}
322	}
323
324	static device_t
325	cpu_add_child(device_t bus, int order, const char *name, int unit)
326	{
327	struct cpu_device *cd;
328	device_t child;
329	struct pcpu *pc;
330
331	if ((cd = kmalloc(sizeof(*cd), M_DEVBUF, M_NOWAIT \| M_ZERO)) == NULL)
332	return (NULL);
333
334	resource_list_init(&cd->cd_rl);
335	pc = pcpu_find(device_get_unit(bus));
336	cd->cd_pcpu = pc;
337
338	child = device_add_child_ordered(bus, order, name, unit);
339	if (child != NULL) {
340	pc->pc_device = child;
341	device_set_ivars(child, cd);
342	} else
343	kfree(cd, M_DEVBUF);
344	return (child);
345	}
346
347	static struct resource_list *
348	cpu_get_rlist(device_t dev, device_t child)
349	{
350	struct cpu_device *cpdev;
351
352	cpdev = device_get_ivars(child);
353	return (&cpdev->cd_rl);
354	}
355
356	static int
357	cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
358	{
359	struct cpu_device *cpdev;
360
361	if (index != CPU_IVAR_PCPU)
362	return (ENOENT);
363	cpdev = device_get_ivars(child);
364	*result = (uintptr_t)cpdev->cd_pcpu;
365	return (0);
366	}
367	#endif