[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / platforms / celleb / beat.c

/*
 * Simple routines for Celleb/Beat
 *
 * (C) Copyright 2006-2007 TOSHIBA CORPORATION
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/rtc.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/reboot.h>

#include <asm/hvconsole.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/firmware.h>

#include "beat_wrapper.h"
#include "beat.h"
#include "interrupt.h"

static int beat_pm_poweroff_flag;

void beat_restart(char *cmd)
{
	beat_shutdown_logical_partition(!beat_pm_poweroff_flag);
}

void beat_power_off(void)
{
	beat_shutdown_logical_partition(0);
}

u64 beat_halt_code = 0x1000000000000000UL;

void beat_halt(void)
{
	beat_shutdown_logical_partition(beat_halt_code);
}

int beat_set_rtc_time(struct rtc_time *rtc_time)
{
	u64 tim;
	tim = mktime(rtc_time->tm_year+1900,
		     rtc_time->tm_mon+1, rtc_time->tm_mday,
		     rtc_time->tm_hour, rtc_time->tm_min, rtc_time->tm_sec);
	if (beat_rtc_write(tim))
		return -1;
	return 0;
}

void beat_get_rtc_time(struct rtc_time *rtc_time)
{
	u64 tim;

	if (beat_rtc_read(&tim))
		tim = 0;
	to_tm(tim, rtc_time);
	rtc_time->tm_year -= 1900;
	rtc_time->tm_mon -= 1;
}

#define	BEAT_NVRAM_SIZE	4096

ssize_t beat_nvram_read(char *buf, size_t count, loff_t *index)
{
	unsigned int i;
	unsigned long len;
	char *p = buf;

	if (*index >= BEAT_NVRAM_SIZE)
		return -ENODEV;
	i = *index;
	if (i + count > BEAT_NVRAM_SIZE)
		count = BEAT_NVRAM_SIZE - i;

	for (; count != 0; count -= len) {
		len = count;
		if (len > BEAT_NVRW_CNT)
			len = BEAT_NVRW_CNT;
		if (beat_eeprom_read(i, len, p)) {
			return -EIO;
		}

		p += len;
		i += len;
	}
	*index = i;
	return p - buf;
}

ssize_t beat_nvram_write(char *buf, size_t count, loff_t *index)
{
	unsigned int i;
	unsigned long len;
	char *p = buf;

	if (*index >= BEAT_NVRAM_SIZE)
		return -ENODEV;
	i = *index;
	if (i + count > BEAT_NVRAM_SIZE)
		count = BEAT_NVRAM_SIZE - i;

	for (; count != 0; count -= len) {
		len = count;
		if (len > BEAT_NVRW_CNT)
			len = BEAT_NVRW_CNT;
		if (beat_eeprom_write(i, len, p)) {
			return -EIO;
		}

		p += len;
		i += len;
	}
	*index = i;
	return p - buf;
}

ssize_t beat_nvram_get_size(void)
{
	return BEAT_NVRAM_SIZE;
}

int beat_set_xdabr(unsigned long dabr)
{
	if (beat_set_dabr(dabr, DABRX_KERNEL | DABRX_USER))
		return -1;
	return 0;
}

int64_t beat_get_term_char(u64 vterm, u64 *len, u64 *t1, u64 *t2)
{
	u64 db[2];
	s64 ret;

	ret = beat_get_characters_from_console(vterm, len, (u8*)db);
	if (ret == 0) {
		*t1 = db[0];
		*t2 = db[1];
	}
	return ret;
}

int64_t beat_put_term_char(u64 vterm, u64 len, u64 t1, u64 t2)
{
	u64 db[2];

	db[0] = t1;
	db[1] = t2;
	return beat_put_characters_to_console(vterm, len, (u8*)db);
}

void beat_power_save(void)
{
	beat_pause(0);
}

#ifdef CONFIG_KEXEC
void beat_kexec_cpu_down(int crash, int secondary)
{
	beatic_deinit_IRQ();
}
#endif

static irqreturn_t beat_power_event(int virq, void *arg)
{
	printk(KERN_DEBUG "Beat: power button pressed\n");
	beat_pm_poweroff_flag = 1;
	ctrl_alt_del();
	return IRQ_HANDLED;
}

static irqreturn_t beat_reset_event(int virq, void *arg)
{
	printk(KERN_DEBUG "Beat: reset button pressed\n");
	beat_pm_poweroff_flag = 0;
	ctrl_alt_del();
	return IRQ_HANDLED;
}

static struct beat_event_list {
	const char *typecode;
	irq_handler_t handler;
	unsigned int virq;
} beat_event_list[] = {
	{ "power", beat_power_event, 0 },
	{ "reset", beat_reset_event, 0 },
};

static int __init beat_register_event(void)
{
	u64 path[4], data[2];
	int rc, i;
	unsigned int virq;

	for (i = 0; i < ARRAY_SIZE(beat_event_list); i++) {
		struct beat_event_list *ev = &beat_event_list[i];

		if (beat_construct_event_receive_port(data) != 0) {
			printk(KERN_ERR "Beat: "
			       "cannot construct event receive port for %s\n",
			       ev->typecode);
			return -EINVAL;
		}

		virq = irq_create_mapping(NULL, data[0]);
		if (virq == NO_IRQ) {
			printk(KERN_ERR "Beat: failed to get virtual IRQ"
			       " for event receive port for %s\n",
			       ev->typecode);
			beat_destruct_event_receive_port(data[0]);
			return -EIO;
		}
		ev->virq = virq;

		rc = request_irq(virq, ev->handler, IRQF_DISABLED,
				      ev->typecode, NULL);
		if (rc != 0) {
			printk(KERN_ERR "Beat: failed to request virtual IRQ"
			       " for event receive port for %s\n",
			       ev->typecode);
			beat_destruct_event_receive_port(data[0]);
			return rc;
		}

		path[0] = 0x1000000065780000ul;	/* 1,ex */
		path[1] = 0x627574746f6e0000ul;	/* button */
		path[2] = 0;
		strncpy((char *)&path[2], ev->typecode, 8);
		path[3] = 0;
		data[1] = 0;

		beat_create_repository_node(path, data);
	}
	return 0;
}

static int __init beat_event_init(void)
{
	if (!firmware_has_feature(FW_FEATURE_BEAT))
		return -EINVAL;

	beat_pm_poweroff_flag = 0;
	return beat_register_event();
}

device_initcall(beat_event_init);

EXPORT_SYMBOL(beat_get_term_char);
EXPORT_SYMBOL(beat_put_term_char);
EXPORT_SYMBOL(beat_halt_code);
Commit	Line	Data
c347b798 IK	1	/*
	2	* Simple routines for Celleb/Beat
	3	*
	4	* (C) Copyright 2006-2007 TOSHIBA CORPORATION
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; if not, write to the Free Software Foundation, Inc.,
	18	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/init.h>
	23	#include <linux/err.h>
	24	#include <linux/rtc.h>
b4184803 IK	25	#include <linux/interrupt.h>
	26	#include <linux/irqreturn.h>
	27	#include <linux/reboot.h>
c347b798 IK	28
	29	#include <asm/hvconsole.h>
	30	#include <asm/time.h>
b4184803 IK	31	#include <asm/machdep.h>
b4184803 IK	32	#include <asm/firmware.h>
c347b798 IK	33
	34	#include "beat_wrapper.h"
	35	#include "beat.h"
b4184803 IK	36	#include "interrupt.h"
	37
	38	static int beat_pm_poweroff_flag;
c347b798 IK	39
	40	void beat_restart(char *cmd)
	41	{
b4184803	42	beat_shutdown_logical_partition(!beat_pm_poweroff_flag);
c347b798 IK	43	}
	44
	45	void beat_power_off(void)
	46	{
	47	beat_shutdown_logical_partition(0);
	48	}
	49
	50	u64 beat_halt_code = 0x1000000000000000UL;
	51
	52	void beat_halt(void)
	53	{
	54	beat_shutdown_logical_partition(beat_halt_code);
	55	}
	56
	57	int beat_set_rtc_time(struct rtc_time *rtc_time)
	58	{
	59	u64 tim;
	60	tim = mktime(rtc_time->tm_year+1900,
	61	rtc_time->tm_mon+1, rtc_time->tm_mday,
	62	rtc_time->tm_hour, rtc_time->tm_min, rtc_time->tm_sec);
	63	if (beat_rtc_write(tim))
	64	return -1;
	65	return 0;
	66	}
	67
	68	void beat_get_rtc_time(struct rtc_time *rtc_time)
	69	{
	70	u64 tim;
	71
	72	if (beat_rtc_read(&tim))
	73	tim = 0;
	74	to_tm(tim, rtc_time);
	75	rtc_time->tm_year -= 1900;
	76	rtc_time->tm_mon -= 1;
	77	}
	78
	79	#define BEAT_NVRAM_SIZE 4096
	80
	81	ssize_t beat_nvram_read(char buf, size_t count, loff_t index)
	82	{
	83	unsigned int i;
	84	unsigned long len;
	85	char *p = buf;
	86
	87	if (*index >= BEAT_NVRAM_SIZE)
	88	return -ENODEV;
	89	i = *index;
	90	if (i + count > BEAT_NVRAM_SIZE)
	91	count = BEAT_NVRAM_SIZE - i;
	92
	93	for (; count != 0; count -= len) {
	94	len = count;
	95	if (len > BEAT_NVRW_CNT)
	96	len = BEAT_NVRW_CNT;
	97	if (beat_eeprom_read(i, len, p)) {
	98	return -EIO;
	99	}
	100
	101	p += len;
	102	i += len;
	103	}
	104	*index = i;
	105	return p - buf;
	106	}
107
108	ssize_t beat_nvram_write(char buf, size_t count, loff_t index)
109	{
110	unsigned int i;
111	unsigned long len;
112	char *p = buf;
113
114	if (*index >= BEAT_NVRAM_SIZE)
115	return -ENODEV;
116	i = *index;
117	if (i + count > BEAT_NVRAM_SIZE)
118	count = BEAT_NVRAM_SIZE - i;
119
120	for (; count != 0; count -= len) {
121	len = count;
122	if (len > BEAT_NVRW_CNT)
123	len = BEAT_NVRW_CNT;
124	if (beat_eeprom_write(i, len, p)) {
125	return -EIO;
126	}
127
128	p += len;
129	i += len;
130	}
131	*index = i;
132	return p - buf;
133	}
134
135	ssize_t beat_nvram_get_size(void)
136	{
137	return BEAT_NVRAM_SIZE;
138	}
139
140	int beat_set_xdabr(unsigned long dabr)
141	{
142	if (beat_set_dabr(dabr, DABRX_KERNEL \| DABRX_USER))
143	return -1;
144	return 0;
145	}
146
147	int64_t beat_get_term_char(u64 vterm, u64 len, u64 t1, u64 *t2)
148	{
149	u64 db[2];
150	s64 ret;
151
152	ret = beat_get_characters_from_console(vterm, len, (u8*)db);
153	if (ret == 0) {
154	*t1 = db[0];
155	*t2 = db[1];
156	}
157	return ret;
158	}
159
160	int64_t beat_put_term_char(u64 vterm, u64 len, u64 t1, u64 t2)
161	{
162	u64 db[2];
163
164	db[0] = t1;
165	db[1] = t2;
166	return beat_put_characters_to_console(vterm, len, (u8*)db);
167	}
168
80755b41 IK	169	void beat_power_save(void)
	170	{
	171	beat_pause(0);
	172	}
	173
	174	#ifdef CONFIG_KEXEC
	175	void beat_kexec_cpu_down(int crash, int secondary)
	176	{
	177	beatic_deinit_IRQ();
	178	}
	179	#endif
	180
b4184803 IK	181	static irqreturn_t beat_power_event(int virq, void *arg)
	182	{
	183	printk(KERN_DEBUG "Beat: power button pressed\n");
	184	beat_pm_poweroff_flag = 1;
	185	ctrl_alt_del();
	186	return IRQ_HANDLED;
	187	}
	188
	189	static irqreturn_t beat_reset_event(int virq, void *arg)
	190	{
	191	printk(KERN_DEBUG "Beat: reset button pressed\n");
	192	beat_pm_poweroff_flag = 0;
	193	ctrl_alt_del();
	194	return IRQ_HANDLED;
	195	}
	196
	197	static struct beat_event_list {
	198	const char *typecode;
	199	irq_handler_t handler;
	200	unsigned int virq;
	201	} beat_event_list[] = {
	202	{ "power", beat_power_event, 0 },
	203	{ "reset", beat_reset_event, 0 },
	204	};
	205
	206	static int __init beat_register_event(void)
	207	{
	208	u64 path[4], data[2];
	209	int rc, i;
	210	unsigned int virq;
	211
	212	for (i = 0; i < ARRAY_SIZE(beat_event_list); i++) {
	213	struct beat_event_list *ev = &beat_event_list[i];
	214
	215	if (beat_construct_event_receive_port(data) != 0) {
	216	printk(KERN_ERR "Beat: "
	217	"cannot construct event receive port for %s\n",
	218	ev->typecode);
	219	return -EINVAL;
	220	}
	221
	222	virq = irq_create_mapping(NULL, data[0]);
	223	if (virq == NO_IRQ) {
	224	printk(KERN_ERR "Beat: failed to get virtual IRQ"
	225	" for event receive port for %s\n",
	226	ev->typecode);
	227	beat_destruct_event_receive_port(data[0]);
	228	return -EIO;
	229	}
	230	ev->virq = virq;
	231
	232	rc = request_irq(virq, ev->handler, IRQF_DISABLED,
	233	ev->typecode, NULL);
	234	if (rc != 0) {
	235	printk(KERN_ERR "Beat: failed to request virtual IRQ"
	236	" for event receive port for %s\n",
	237	ev->typecode);
	238	beat_destruct_event_receive_port(data[0]);
	239	return rc;
	240	}
	241
	242	path[0] = 0x1000000065780000ul; /* 1,ex */
	243	path[1] = 0x627574746f6e0000ul; /* button */
	244	path[2] = 0;
245	strncpy((char *)&path[2], ev->typecode, 8);
246	path[3] = 0;
247	data[1] = 0;
248
249	beat_create_repository_node(path, data);
250	}
251	return 0;
252	}
253
254	static int __init beat_event_init(void)
255	{
256	if (!firmware_has_feature(FW_FEATURE_BEAT))
257	return -EINVAL;
258
259	beat_pm_poweroff_flag = 0;
260	return beat_register_event();
261	}
262
263	device_initcall(beat_event_init);
264
c347b798 IK	265	EXPORT_SYMBOL(beat_get_term_char);
	266	EXPORT_SYMBOL(beat_put_term_char);
	267	EXPORT_SYMBOL(beat_halt_code);