[dragonfly.git] / sys / platform / pc32 / acpica5 / acpi_fadt.c

/*
 * Copyright (c) 2009 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Sepherosa Ziehau <sepherosa@gmail.com>
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS 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.
 */

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <sys/machintr.h>
#include <sys/systm.h>
#include <sys/thread2.h>

#include "acpi_sdt.h"
#include "acpi_sdt_var.h"
#include "acpi_sci_var.h"

#define FADT_VPRINTF(fmt, arg...) \
do { \
	if (bootverbose) \
		kprintf("ACPI FADT: " fmt , ##arg); \
} while (0)

/* Fixed ACPI Description Table */
struct acpi_fadt {
	struct acpi_sdth	fadt_hdr;
	uint32_t		fadt_fw_ctrl;
	uint32_t		fadt_dsdt;
	uint8_t			fadt_rsvd1;
	uint8_t			fadt_pm_prof;
	uint16_t		fadt_sci_int;
	uint32_t		fadt_smi_cmd;
	uint8_t			fadt_acpi_en;
	uint8_t			fadt_acpi_dis;
	uint8_t			fadt_s4bios;
	uint8_t			fadt_pstate;
	/* More ... */
} __packed;

struct acpi_sci_mode {
	enum intr_trigger	sci_trig;
	enum intr_polarity	sci_pola;
};

static int			acpi_sci_irq = -1;
static enum intr_trigger	acpi_sci_trig = INTR_TRIGGER_CONFORM;
static enum intr_polarity	acpi_sci_pola = INTR_POLARITY_CONFORM;
static const struct acpi_sci_mode *acpi_sci_mode1 = NULL;

static const struct acpi_sci_mode acpi_sci_modes[] = {
	/*
	 * NOTE: Order is critical
	 */
	{ INTR_TRIGGER_LEVEL,	INTR_POLARITY_LOW },
	{ INTR_TRIGGER_LEVEL,	INTR_POLARITY_HIGH },
	{ INTR_TRIGGER_EDGE,	INTR_POLARITY_HIGH },
	{ INTR_TRIGGER_EDGE,	INTR_POLARITY_LOW },

	/* Required last entry */
	{ INTR_TRIGGER_CONFORM,	INTR_POLARITY_CONFORM }
};

static void
fadt_probe(void)
{
	struct acpi_fadt *fadt;
	vm_paddr_t fadt_paddr;
	enum intr_trigger trig;
	enum intr_polarity pola;
	int enabled = 1;
	char *env;

	fadt_paddr = sdt_search(ACPI_FADT_SIG);
	if (fadt_paddr == 0) {
		kprintf("fadt_probe: can't locate FADT\n");
		return;
	}

	fadt = sdt_sdth_map(fadt_paddr);
	KKASSERT(fadt != NULL);

	/*
	 * FADT in ACPI specification 1.0 - 4.0
	 */
	if (fadt->fadt_hdr.sdth_rev < 1 || fadt->fadt_hdr.sdth_rev > 4) {
		kprintf("fadt_probe: unsupported FADT revision %d\n",
			fadt->fadt_hdr.sdth_rev);
		goto back;
	}

	if (fadt->fadt_hdr.sdth_len < sizeof(*fadt)) {
		kprintf("fadt_probe: invalid FADT length %u\n",
			fadt->fadt_hdr.sdth_len);
		goto back;
	}

	kgetenv_int("hw.acpi.sci.enabled", &enabled);
	if (!enabled)
		goto back;

	acpi_sci_irq = fadt->fadt_sci_int;

	env = kgetenv("hw.acpi.sci.trigger");
	if (env == NULL)
		goto back;

	trig = INTR_TRIGGER_CONFORM;
	if (strcmp(env, "edge") == 0)
		trig = INTR_TRIGGER_EDGE;
	else if (strcmp(env, "level") == 0)
		trig = INTR_TRIGGER_LEVEL;

	kfreeenv(env);

	if (trig == INTR_TRIGGER_CONFORM)
		goto back;

	env = kgetenv("hw.acpi.sci.polarity");
	if (env == NULL)
		goto back;

	pola = INTR_POLARITY_CONFORM;
	if (strcmp(env, "high") == 0)
		pola = INTR_POLARITY_HIGH;
	else if (strcmp(env, "low") == 0)
		pola = INTR_POLARITY_LOW;

	kfreeenv(env);

	if (pola == INTR_POLARITY_CONFORM)
		goto back;

	acpi_sci_trig = trig;
	acpi_sci_pola = pola;
back:
	if (acpi_sci_irq >= 0) {
		FADT_VPRINTF("SCI irq %d, %s/%s\n", acpi_sci_irq,
			     intr_str_trigger(acpi_sci_trig),
			     intr_str_polarity(acpi_sci_pola));
	} else {
		FADT_VPRINTF("SCI is disabled\n");
	}
	sdt_sdth_unmap(&fadt->fadt_hdr);
}
SYSINIT(fadt_probe, SI_BOOT2_PRESMP, SI_ORDER_SECOND, fadt_probe, 0);

static void
acpi_sci_dummy_intr(void *dummy __unused, void *frame __unused)
{
}

static boolean_t
acpi_sci_test(const struct acpi_sci_mode *mode)
{
	void *sci_desc;
	long last_cnt;

	FADT_VPRINTF("SCI testing %s/%s\n",
	    intr_str_trigger(mode->sci_trig),
	    intr_str_polarity(mode->sci_pola));

	last_cnt = get_interrupt_counter(acpi_sci_irq, 0);

	machintr_legacy_intr_config(acpi_sci_irq,
	    mode->sci_trig, mode->sci_pola);

	sci_desc = register_int(acpi_sci_irq,
	    acpi_sci_dummy_intr, NULL, "sci", NULL,
	    INTR_EXCL | INTR_CLOCK |
	    INTR_NOPOLL | INTR_MPSAFE | INTR_NOENTROPY, 0);

	DELAY(100 * 1000);

	unregister_int(sci_desc, 0);

	if (get_interrupt_counter(acpi_sci_irq, 0) - last_cnt < 20) {
		acpi_sci_trig = mode->sci_trig;
		acpi_sci_pola = mode->sci_pola;

		kprintf("ACPI FADT: SCI select %s/%s\n",
		    intr_str_trigger(acpi_sci_trig),
		    intr_str_polarity(acpi_sci_pola));
		return TRUE;
	}
	return FALSE;
}

void
acpi_sci_config(void)
{
	const struct acpi_sci_mode *mode;

	KKASSERT(mycpuid == 0);

	if (machintr_legacy_intr_find(acpi_sci_irq,
	    INTR_TRIGGER_CONFORM, INTR_POLARITY_CONFORM) < 0) {
		kprintf("ACPI FADT: SCI irq %d is invalid, disable\n",
		    acpi_sci_irq);
		acpi_sci_irq = -1;
		return;
	}

	if (acpi_sci_irq < 0)
		return;

	if (acpi_sci_trig != INTR_TRIGGER_CONFORM) {
		KKASSERT(acpi_sci_pola != INTR_POLARITY_CONFORM);
		machintr_legacy_intr_config(acpi_sci_irq,
		    acpi_sci_trig, acpi_sci_pola);
		return;
	}

	kprintf("ACPI FADT: SCI testing interrupt mode ...\n");
	if (acpi_sci_mode1 != NULL) {
		if (acpi_sci_test(acpi_sci_mode1))
			return;
	}
	for (mode = acpi_sci_modes; mode->sci_trig != INTR_TRIGGER_CONFORM;
	     ++mode) {
		if (mode == acpi_sci_mode1)
			continue;
		if (acpi_sci_test(mode))
			return;
	}

	kprintf("ACPI FADT: no suitable interrupt mode for SCI, disable\n");
	acpi_sci_irq = -1;
}

int
acpi_sci_enabled(void)
{
	if (acpi_sci_irq >= 0)
		return 1;
	else
		return 0;
}

int
acpi_sci_pci_shariable(void)
{
	if (acpi_sci_irq >= 0 &&
	    acpi_sci_trig == INTR_TRIGGER_LEVEL &&
	    acpi_sci_pola == INTR_POLARITY_LOW)
		return 1;
	else
		return 0;
}

int
acpi_sci_irqno(void)
{
	return acpi_sci_irq;
}

void
acpi_sci_setmode1(enum intr_trigger trig, enum intr_polarity pola)
{
	const struct acpi_sci_mode *mode;

	for (mode = acpi_sci_modes; mode->sci_trig != INTR_TRIGGER_CONFORM;
	     ++mode) {
		if (mode->sci_trig == trig && mode->sci_pola == pola) {
			acpi_sci_mode1 = mode;
			return;
		}
	}
}
Commit	Line	Data
05ba9093 SZ	1	/*
	2	* Copyright (c) 2009 The DragonFly Project. All rights reserved.
	3	*
	4	* This code is derived from software contributed to The DragonFly Project
	5	* by Sepherosa Ziehau <sepherosa@gmail.com>
	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	*
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in
	15	* the documentation and/or other materials provided with the
	16	* distribution.
	17	* 3. Neither the name of The DragonFly Project nor the names of its
	18	* contributors may be used to endorse or promote products derived
	19	* from this software without specific, prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	22	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	23	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	24	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	25	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	26	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	27	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	28	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	29	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	30	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	31	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*/
	34
	35	#include <sys/param.h>
	36	#include <sys/bus.h>
52234ee9	37	#include <sys/interrupt.h>
05ba9093	38	#include <sys/kernel.h>
5e2a2352	39	#include <sys/machintr.h>
05ba9093	40	#include <sys/systm.h>
6355d931	41	#include <sys/thread2.h>
05ba9093	42
05ba9093 SZ	43	#include "acpi_sdt.h"
05ba9093 SZ	44	#include "acpi_sdt_var.h"
5e2a2352	45	#include "acpi_sci_var.h"
05ba9093 SZ	46
	47	#define FADT_VPRINTF(fmt, arg...) \
	48	do { \
	49	if (bootverbose) \
	50	kprintf("ACPI FADT: " fmt , ##arg); \
	51	} while (0)
	52
	53	/* Fixed ACPI Description Table */
	54	struct acpi_fadt {
	55	struct acpi_sdth fadt_hdr;
	56	uint32_t fadt_fw_ctrl;
	57	uint32_t fadt_dsdt;
	58	uint8_t fadt_rsvd1;
	59	uint8_t fadt_pm_prof;
	60	uint16_t fadt_sci_int;
	61	uint32_t fadt_smi_cmd;
	62	uint8_t fadt_acpi_en;
	63	uint8_t fadt_acpi_dis;
	64	uint8_t fadt_s4bios;
	65	uint8_t fadt_pstate;
	66	/* More ... */
	67	} __packed;
	68
52234ee9 SZ	69	struct acpi_sci_mode {
	70	enum intr_trigger sci_trig;
	71	enum intr_polarity sci_pola;
	72	};
	73
05ba9093	74	static int acpi_sci_irq = -1;
5e2a2352 SZ	75	static enum intr_trigger acpi_sci_trig = INTR_TRIGGER_CONFORM;
5e2a2352 SZ	76	static enum intr_polarity acpi_sci_pola = INTR_POLARITY_CONFORM;
c098b394	77	static const struct acpi_sci_mode *acpi_sci_mode1 = NULL;
05ba9093	78
52234ee9 SZ	79	static const struct acpi_sci_mode acpi_sci_modes[] = {
	80	/*
	81	* NOTE: Order is critical
	82	*/
	83	{ INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW },
	84	{ INTR_TRIGGER_LEVEL, INTR_POLARITY_HIGH },
	85	{ INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH },
	86	{ INTR_TRIGGER_EDGE, INTR_POLARITY_LOW },
	87
	88	/* Required last entry */
	89	{ INTR_TRIGGER_CONFORM, INTR_POLARITY_CONFORM }
	90	};
	91
05ba9093 SZ	92	static void
	93	fadt_probe(void)
	94	{
	95	struct acpi_fadt *fadt;
	96	vm_paddr_t fadt_paddr;
5e2a2352 SZ	97	enum intr_trigger trig;
	98	enum intr_polarity pola;
	99	int enabled = 1;
	100	char *env;
05ba9093 SZ	101
	102	fadt_paddr = sdt_search(ACPI_FADT_SIG);
	103	if (fadt_paddr == 0) {
	104	kprintf("fadt_probe: can't locate FADT\n");
	105	return;
	106	}
	107
	108	fadt = sdt_sdth_map(fadt_paddr);
	109	KKASSERT(fadt != NULL);
	110
	111	/*
	112	* FADT in ACPI specification 1.0 - 4.0
	113	*/
	114	if (fadt->fadt_hdr.sdth_rev < 1 \|\| fadt->fadt_hdr.sdth_rev > 4) {
	115	kprintf("fadt_probe: unsupported FADT revision %d\n",
	116	fadt->fadt_hdr.sdth_rev);
	117	goto back;
	118	}
	119
	120	if (fadt->fadt_hdr.sdth_len < sizeof(*fadt)) {
	121	kprintf("fadt_probe: invalid FADT length %u\n",
	122	fadt->fadt_hdr.sdth_len);
	123	goto back;
	124	}
	125
5e2a2352 SZ	126	kgetenv_int("hw.acpi.sci.enabled", &enabled);
	127	if (!enabled)
	128	goto back;
	129
05ba9093	130	acpi_sci_irq = fadt->fadt_sci_int;
05ba9093	131
5e2a2352 SZ	132	env = kgetenv("hw.acpi.sci.trigger");
	133	if (env == NULL)
	134	goto back;
	135
	136	trig = INTR_TRIGGER_CONFORM;
	137	if (strcmp(env, "edge") == 0)
	138	trig = INTR_TRIGGER_EDGE;
	139	else if (strcmp(env, "level") == 0)
	140	trig = INTR_TRIGGER_LEVEL;
	141
	142	kfreeenv(env);
	143
	144	if (trig == INTR_TRIGGER_CONFORM)
	145	goto back;
	146
	147	env = kgetenv("hw.acpi.sci.polarity");
	148	if (env == NULL)
	149	goto back;
	150
	151	pola = INTR_POLARITY_CONFORM;
	152	if (strcmp(env, "high") == 0)
	153	pola = INTR_POLARITY_HIGH;
	154	else if (strcmp(env, "low") == 0)
	155	pola = INTR_POLARITY_LOW;
	156
	157	kfreeenv(env);
	158
	159	if (pola == INTR_POLARITY_CONFORM)
	160	goto back;
	161
	162	acpi_sci_trig = trig;
	163	acpi_sci_pola = pola;
05ba9093	164	back:
5e2a2352 SZ	165	if (acpi_sci_irq >= 0) {
	166	FADT_VPRINTF("SCI irq %d, %s/%s\n", acpi_sci_irq,
	167	intr_str_trigger(acpi_sci_trig),
	168	intr_str_polarity(acpi_sci_pola));
	169	} else {
	170	FADT_VPRINTF("SCI is disabled\n");
	171	}
05ba9093 SZ	172	sdt_sdth_unmap(&fadt->fadt_hdr);
	173	}
	174	SYSINIT(fadt_probe, SI_BOOT2_PRESMP, SI_ORDER_SECOND, fadt_probe, 0);
5e2a2352	175
52234ee9 SZ	176	static void
	177	acpi_sci_dummy_intr(void dummy __unused, void frame __unused)
	178	{
	179	}
	180
c098b394 SZ	181	static boolean_t
	182	acpi_sci_test(const struct acpi_sci_mode *mode)
	183	{
	184	void *sci_desc;
	185	long last_cnt;
	186
	187	FADT_VPRINTF("SCI testing %s/%s\n",
	188	intr_str_trigger(mode->sci_trig),
	189	intr_str_polarity(mode->sci_pola));
	190
	191	last_cnt = get_interrupt_counter(acpi_sci_irq, 0);
	192
	193	machintr_legacy_intr_config(acpi_sci_irq,
	194	mode->sci_trig, mode->sci_pola);
	195
	196	sci_desc = register_int(acpi_sci_irq,
	197	acpi_sci_dummy_intr, NULL, "sci", NULL,
	198	INTR_EXCL \| INTR_CLOCK \|
	199	INTR_NOPOLL \| INTR_MPSAFE \| INTR_NOENTROPY, 0);
	200
	201	DELAY(100 * 1000);
	202
	203	unregister_int(sci_desc, 0);
	204
	205	if (get_interrupt_counter(acpi_sci_irq, 0) - last_cnt < 20) {
	206	acpi_sci_trig = mode->sci_trig;
	207	acpi_sci_pola = mode->sci_pola;
	208
	209	kprintf("ACPI FADT: SCI select %s/%s\n",
	210	intr_str_trigger(acpi_sci_trig),
	211	intr_str_polarity(acpi_sci_pola));
	212	return TRUE;
	213	}
	214	return FALSE;
	215	}
	216
5e2a2352 SZ	217	void
	218	acpi_sci_config(void)
	219	{
52234ee9 SZ	220	const struct acpi_sci_mode *mode;
52234ee9 SZ	221
6355d931 SZ	222	KKASSERT(mycpuid == 0);
6355d931 SZ	223
03301eb8 SZ	224	if (machintr_legacy_intr_find(acpi_sci_irq,
	225	INTR_TRIGGER_CONFORM, INTR_POLARITY_CONFORM) < 0) {
	226	kprintf("ACPI FADT: SCI irq %d is invalid, disable\n",
	227	acpi_sci_irq);
	228	acpi_sci_irq = -1;
	229	return;
	230	}
	231
52234ee9 SZ	232	if (acpi_sci_irq < 0)
52234ee9 SZ	233	return;
5e2a2352 SZ	234
	235	if (acpi_sci_trig != INTR_TRIGGER_CONFORM) {
	236	KKASSERT(acpi_sci_pola != INTR_POLARITY_CONFORM);
bec969af	237	machintr_legacy_intr_config(acpi_sci_irq,
5e2a2352 SZ	238	acpi_sci_trig, acpi_sci_pola);
	239	return;
	240	}
	241
52234ee9	242	kprintf("ACPI FADT: SCI testing interrupt mode ...\n");
c098b394 SZ	243	if (acpi_sci_mode1 != NULL) {
	244	if (acpi_sci_test(acpi_sci_mode1))
	245	return;
	246	}
52234ee9 SZ	247	for (mode = acpi_sci_modes; mode->sci_trig != INTR_TRIGGER_CONFORM;
52234ee9 SZ	248	++mode) {
c098b394 SZ	249	if (mode == acpi_sci_mode1)
	250	continue;
	251	if (acpi_sci_test(mode))
52234ee9	252	return;
5e2a2352	253	}
52234ee9 SZ	254
	255	kprintf("ACPI FADT: no suitable interrupt mode for SCI, disable\n");
	256	acpi_sci_irq = -1;
5e2a2352 SZ	257	}
	258
	259	int
	260	acpi_sci_enabled(void)
	261	{
	262	if (acpi_sci_irq >= 0)
	263	return 1;
	264	else
	265	return 0;
	266	}
	267
	268	int
	269	acpi_sci_pci_shariable(void)
	270	{
	271	if (acpi_sci_irq >= 0 &&
	272	acpi_sci_trig == INTR_TRIGGER_LEVEL &&
	273	acpi_sci_pola == INTR_POLARITY_LOW)
	274	return 1;
	275	else
	276	return 0;
	277	}
9dba15ae SZ	278
	279	int
	280	acpi_sci_irqno(void)
	281	{
	282	return acpi_sci_irq;
	283	}
c098b394 SZ	284
	285	void
	286	acpi_sci_setmode1(enum intr_trigger trig, enum intr_polarity pola)
	287	{
	288	const struct acpi_sci_mode *mode;
	289
	290	for (mode = acpi_sci_modes; mode->sci_trig != INTR_TRIGGER_CONFORM;
	291	++mode) {
	292	if (mode->sci_trig == trig && mode->sci_pola == pola) {
	293	acpi_sci_mode1 = mode;
	294	return;
	295	}
	296	}
	297	}