[deliverable/linux.git] / arch / sparc / kernel / sysfs.c

/* sysfs.c: Toplogy sysfs support code for sparc64.
 *
 * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
 */
#include <linux/sysdev.h>
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/percpu.h>
#include <linux/init.h>

#include <asm/cpudata.h>
#include <asm/hypervisor.h>
#include <asm/spitfire.h>

static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));

#define SHOW_MMUSTAT_ULONG(NAME) \
static ssize_t show_##NAME(struct sys_device *dev, \
			struct sysdev_attribute *attr, char *buf) \
{ \
	struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
	return sprintf(buf, "%lu\n", p->NAME); \
} \
static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)

SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);

static struct attribute *mmu_stat_attrs[] = {
	&attr_immu_tsb_hits_ctx0_8k_tte.attr,
	&attr_immu_tsb_ticks_ctx0_8k_tte.attr,
	&attr_immu_tsb_hits_ctx0_64k_tte.attr,
	&attr_immu_tsb_ticks_ctx0_64k_tte.attr,
	&attr_immu_tsb_hits_ctx0_4mb_tte.attr,
	&attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
	&attr_immu_tsb_hits_ctx0_256mb_tte.attr,
	&attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
	&attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
	&attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
	&attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
	&attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
	&attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
	&attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
	&attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
	&attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
	&attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
	&attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
	&attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
	&attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
	&attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
	&attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
	&attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
	&attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
	&attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
	&attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
	&attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
	&attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
	&attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
	&attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
	&attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
	&attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
	NULL,
};

static struct attribute_group mmu_stat_group = {
	.attrs = mmu_stat_attrs,
	.name = "mmu_stats",
};

/* XXX convert to rusty's on_one_cpu */
static unsigned long run_on_cpu(unsigned long cpu,
			        unsigned long (*func)(unsigned long),
				unsigned long arg)
{
	cpumask_t old_affinity = current->cpus_allowed;
	unsigned long ret;

	/* should return -EINVAL to userspace */
	if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
		return 0;

	ret = func(arg);

	set_cpus_allowed(current, old_affinity);

	return ret;
}

static unsigned long read_mmustat_enable(unsigned long junk)
{
	unsigned long ra = 0;

	sun4v_mmustat_info(&ra);

	return ra != 0;
}

static unsigned long write_mmustat_enable(unsigned long val)
{
	unsigned long ra, orig_ra;

	if (val)
		ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
	else
		ra = 0UL;

	return sun4v_mmustat_conf(ra, &orig_ra);
}

static ssize_t show_mmustat_enable(struct sys_device *s,
				struct sysdev_attribute *attr, char *buf)
{
	unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
	return sprintf(buf, "%lx\n", val);
}

static ssize_t store_mmustat_enable(struct sys_device *s,
			struct sysdev_attribute *attr, const char *buf,
			size_t count)
{
	unsigned long val, err;
	int ret = sscanf(buf, "%ld", &val);

	if (ret != 1)
		return -EINVAL;

	err = run_on_cpu(s->id, write_mmustat_enable, val);
	if (err)
		return -EIO;

	return count;
}

static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);

static int mmu_stats_supported;

static int register_mmu_stats(struct sys_device *s)
{
	if (!mmu_stats_supported)
		return 0;
	sysdev_create_file(s, &attr_mmustat_enable);
	return sysfs_create_group(&s->kobj, &mmu_stat_group);
}

#ifdef CONFIG_HOTPLUG_CPU
static void unregister_mmu_stats(struct sys_device *s)
{
	if (!mmu_stats_supported)
		return;
	sysfs_remove_group(&s->kobj, &mmu_stat_group);
	sysdev_remove_file(s, &attr_mmustat_enable);
}
#endif

#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
static ssize_t show_##NAME(struct sys_device *dev, \
		struct sysdev_attribute *attr, char *buf) \
{ \
	cpuinfo_sparc *c = &cpu_data(dev->id); \
	return sprintf(buf, "%lu\n", c->MEMBER); \
}

#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
static ssize_t show_##NAME(struct sys_device *dev, \
		struct sysdev_attribute *attr, char *buf) \
{ \
	cpuinfo_sparc *c = &cpu_data(dev->id); \
	return sprintf(buf, "%u\n", c->MEMBER); \
}

SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);

static struct sysdev_attribute cpu_core_attrs[] = {
	_SYSDEV_ATTR(clock_tick,          0444, show_clock_tick, NULL),
	_SYSDEV_ATTR(l1_dcache_size,      0444, show_l1_dcache_size, NULL),
	_SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
	_SYSDEV_ATTR(l1_icache_size,      0444, show_l1_icache_size, NULL),
	_SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
	_SYSDEV_ATTR(l2_cache_size,       0444, show_l2_cache_size, NULL),
	_SYSDEV_ATTR(l2_cache_line_size,  0444, show_l2_cache_line_size, NULL),
};

static DEFINE_PER_CPU(struct cpu, cpu_devices);

static void register_cpu_online(unsigned int cpu)
{
	struct cpu *c = &per_cpu(cpu_devices, cpu);
	struct sys_device *s = &c->sysdev;
	int i;

	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
		sysdev_create_file(s, &cpu_core_attrs[i]);

	register_mmu_stats(s);
}

#ifdef CONFIG_HOTPLUG_CPU
static void unregister_cpu_online(unsigned int cpu)
{
	struct cpu *c = &per_cpu(cpu_devices, cpu);
	struct sys_device *s = &c->sysdev;
	int i;

	unregister_mmu_stats(s);
	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
		sysdev_remove_file(s, &cpu_core_attrs[i]);
}
#endif

static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
				      unsigned long action, void *hcpu)
{
	unsigned int cpu = (unsigned int)(long)hcpu;

	switch (action) {
	case CPU_ONLINE:
	case CPU_ONLINE_FROZEN:
		register_cpu_online(cpu);
		break;
#ifdef CONFIG_HOTPLUG_CPU
	case CPU_DEAD:
	case CPU_DEAD_FROZEN:
		unregister_cpu_online(cpu);
		break;
#endif
	}
	return NOTIFY_OK;
}

static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
	.notifier_call	= sysfs_cpu_notify,
};

static void __init check_mmu_stats(void)
{
	unsigned long dummy1, err;

	if (tlb_type != hypervisor)
		return;

	err = sun4v_mmustat_info(&dummy1);
	if (!err)
		mmu_stats_supported = 1;
}

static void register_nodes(void)
{
#ifdef CONFIG_NUMA
	int i;

	for (i = 0; i < MAX_NUMNODES; i++)
		register_one_node(i);
#endif
}

static int __init topology_init(void)
{
	int cpu;

	register_nodes();

	check_mmu_stats();

	register_cpu_notifier(&sysfs_cpu_nb);

	for_each_possible_cpu(cpu) {
		struct cpu *c = &per_cpu(cpu_devices, cpu);

		register_cpu(c, cpu);
		if (cpu_online(cpu))
			register_cpu_online(cpu);
	}

	return 0;
}

subsys_initcall(topology_init);
Commit	Line	Data
eff3414b DM	1	/* sysfs.c: Toplogy sysfs support code for sparc64.
	2	*
	3	* Copyright (C) 2007 David S. Miller <davem@davemloft.net>
	4	*/
	5	#include <linux/sysdev.h>
	6	#include <linux/cpu.h>
	7	#include <linux/smp.h>
	8	#include <linux/percpu.h>
	9	#include <linux/init.h>
	10
6e6ab2e2	11	#include <asm/cpudata.h>
d887ab3a DM	12	#include <asm/hypervisor.h>
	13	#include <asm/spitfire.h>
	14
	15	static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
eff3414b	16
d887ab3a	17	#define SHOW_MMUSTAT_ULONG(NAME) \
4a0b2b4d AK	18	static ssize_t show_##NAME(struct sys_device *dev, \
4a0b2b4d AK	19	struct sysdev_attribute attr, char buf) \
d1f253e6	20	{ \
d887ab3a DM	21	struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
	22	return sprintf(buf, "%lu\n", p->NAME); \
	23	} \
	24	static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)
	25
	26	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
	27	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
	28	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
	29	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
	30	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
	31	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
	32	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
	33	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
	34	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
	35	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
	36	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
	37	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
	38	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
	39	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
	40	SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
	41	SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
	42	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
	43	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
	44	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
	45	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
	46	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
	47	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
	48	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
	49	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
	50	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
	51	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
	52	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
	53	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
	54	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
	55	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
	56	SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
	57	SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);
	58
	59	static struct attribute *mmu_stat_attrs[] = {
	60	&attr_immu_tsb_hits_ctx0_8k_tte.attr,
	61	&attr_immu_tsb_ticks_ctx0_8k_tte.attr,
	62	&attr_immu_tsb_hits_ctx0_64k_tte.attr,
	63	&attr_immu_tsb_ticks_ctx0_64k_tte.attr,
	64	&attr_immu_tsb_hits_ctx0_4mb_tte.attr,
	65	&attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
	66	&attr_immu_tsb_hits_ctx0_256mb_tte.attr,
	67	&attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
	68	&attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
	69	&attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
	70	&attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
	71	&attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
	72	&attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
	73	&attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
	74	&attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
	75	&attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
	76	&attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
	77	&attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
	78	&attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
	79	&attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
	80	&attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
	81	&attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
	82	&attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
	83	&attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
	84	&attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
85	&attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
86	&attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
87	&attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
88	&attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
89	&attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
90	&attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
91	&attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
92	NULL,
93	};
94
95	static struct attribute_group mmu_stat_group = {
96	.attrs = mmu_stat_attrs,
97	.name = "mmu_stats",
98	};
99
100	/* XXX convert to rusty's on_one_cpu */
101	static unsigned long run_on_cpu(unsigned long cpu,
102	unsigned long (*func)(unsigned long),
103	unsigned long arg)
104	{
105	cpumask_t old_affinity = current->cpus_allowed;
106	unsigned long ret;
107
108	/* should return -EINVAL to userspace */
109	if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
110	return 0;
111
112	ret = func(arg);
113
114	set_cpus_allowed(current, old_affinity);
115
116	return ret;
117	}
118
119	static unsigned long read_mmustat_enable(unsigned long junk)
120	{
121	unsigned long ra = 0;
122
123	sun4v_mmustat_info(&ra);
124
125	return ra != 0;
126	}
127
128	static unsigned long write_mmustat_enable(unsigned long val)
129	{
130	unsigned long ra, orig_ra;
131
132	if (val)
133	ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
134	else
135	ra = 0UL;
136
137	return sun4v_mmustat_conf(ra, &orig_ra);
138	}
139
4a0b2b4d AK	140	static ssize_t show_mmustat_enable(struct sys_device *s,
4a0b2b4d AK	141	struct sysdev_attribute attr, char buf)
d887ab3a DM	142	{
	143	unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
	144	return sprintf(buf, "%lx\n", val);
	145	}
	146
4a0b2b4d AK	147	static ssize_t store_mmustat_enable(struct sys_device *s,
	148	struct sysdev_attribute attr, const char buf,
	149	size_t count)
d887ab3a DM	150	{
	151	unsigned long val, err;
	152	int ret = sscanf(buf, "%ld", &val);
	153
	154	if (ret != 1)
	155	return -EINVAL;
	156
	157	err = run_on_cpu(s->id, write_mmustat_enable, val);
	158	if (err)
	159	return -EIO;
	160
	161	return count;
	162	}
	163
	164	static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);
	165
	166	static int mmu_stats_supported;
	167
	168	static int register_mmu_stats(struct sys_device *s)
	169	{
	170	if (!mmu_stats_supported)
	171	return 0;
	172	sysdev_create_file(s, &attr_mmustat_enable);
	173	return sysfs_create_group(&s->kobj, &mmu_stat_group);
	174	}
	175
	176	#ifdef CONFIG_HOTPLUG_CPU
	177	static void unregister_mmu_stats(struct sys_device *s)
	178	{
	179	if (!mmu_stats_supported)
	180	return;
	181	sysfs_remove_group(&s->kobj, &mmu_stat_group);
	182	sysdev_remove_file(s, &attr_mmustat_enable);
	183	}
	184	#endif
	185
	186	#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
4a0b2b4d AK	187	static ssize_t show_##NAME(struct sys_device *dev, \
4a0b2b4d AK	188	struct sysdev_attribute attr, char buf) \
d887ab3a DM	189	{ \
d887ab3a DM	190	cpuinfo_sparc *c = &cpu_data(dev->id); \
d1f253e6 DM	191	return sprintf(buf, "%lu\n", c->MEMBER); \
	192	}
	193
d887ab3a	194	#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
4a0b2b4d AK	195	static ssize_t show_##NAME(struct sys_device *dev, \
4a0b2b4d AK	196	struct sysdev_attribute attr, char buf) \
d1f253e6	197	{ \
d887ab3a	198	cpuinfo_sparc *c = &cpu_data(dev->id); \
d1f253e6 DM	199	return sprintf(buf, "%u\n", c->MEMBER); \
	200	}
	201
d887ab3a	202	SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
d887ab3a DM	203	SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
	204	SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
	205	SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
	206	SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
	207	SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
	208	SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);
d1f253e6 DM	209
	210	static struct sysdev_attribute cpu_core_attrs[] = {
	211	_SYSDEV_ATTR(clock_tick, 0444, show_clock_tick, NULL),
d1f253e6 DM	212	_SYSDEV_ATTR(l1_dcache_size, 0444, show_l1_dcache_size, NULL),
	213	_SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
	214	_SYSDEV_ATTR(l1_icache_size, 0444, show_l1_icache_size, NULL),
	215	_SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
	216	_SYSDEV_ATTR(l2_cache_size, 0444, show_l2_cache_size, NULL),
	217	_SYSDEV_ATTR(l2_cache_line_size, 0444, show_l2_cache_line_size, NULL),
	218	};
	219
d887ab3a DM	220	static DEFINE_PER_CPU(struct cpu, cpu_devices);
d887ab3a DM	221
d1f253e6 DM	222	static void register_cpu_online(unsigned int cpu)
	223	{
	224	struct cpu *c = &per_cpu(cpu_devices, cpu);
	225	struct sys_device *s = &c->sysdev;
	226	int i;
	227
	228	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
	229	sysdev_create_file(s, &cpu_core_attrs[i]);
d887ab3a DM	230
d887ab3a DM	231	register_mmu_stats(s);
d1f253e6 DM	232	}
	233
	234	#ifdef CONFIG_HOTPLUG_CPU
	235	static void unregister_cpu_online(unsigned int cpu)
	236	{
	237	struct cpu *c = &per_cpu(cpu_devices, cpu);
	238	struct sys_device *s = &c->sysdev;
	239	int i;
	240
d887ab3a	241	unregister_mmu_stats(s);
d1f253e6 DM	242	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
	243	sysdev_remove_file(s, &cpu_core_attrs[i]);
	244	}
	245	#endif
	246
	247	static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
	248	unsigned long action, void *hcpu)
	249	{
	250	unsigned int cpu = (unsigned int)(long)hcpu;
	251
	252	switch (action) {
	253	case CPU_ONLINE:
	254	case CPU_ONLINE_FROZEN:
	255	register_cpu_online(cpu);
	256	break;
	257	#ifdef CONFIG_HOTPLUG_CPU
	258	case CPU_DEAD:
	259	case CPU_DEAD_FROZEN:
	260	unregister_cpu_online(cpu);
	261	break;
	262	#endif
	263	}
	264	return NOTIFY_OK;
	265	}
	266
	267	static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
	268	.notifier_call = sysfs_cpu_notify,
	269	};
	270
d887ab3a DM	271	static void __init check_mmu_stats(void)
	272	{
	273	unsigned long dummy1, err;
	274
	275	if (tlb_type != hypervisor)
	276	return;
	277
	278	err = sun4v_mmustat_info(&dummy1);
	279	if (!err)
	280	mmu_stats_supported = 1;
	281	}
	282
919ee677 DM	283	static void register_nodes(void)
	284	{
	285	#ifdef CONFIG_NUMA
	286	int i;
	287
	288	for (i = 0; i < MAX_NUMNODES; i++)
	289	register_one_node(i);
	290	#endif
	291	}
	292
eff3414b DM	293	static int __init topology_init(void)
	294	{
	295	int cpu;
	296
919ee677 DM	297	register_nodes();
919ee677 DM	298
d887ab3a DM	299	check_mmu_stats();
d887ab3a DM	300
d1f253e6 DM	301	register_cpu_notifier(&sysfs_cpu_nb);
d1f253e6 DM	302
eff3414b DM	303	for_each_possible_cpu(cpu) {
	304	struct cpu *c = &per_cpu(cpu_devices, cpu);
	305
	306	register_cpu(c, cpu);
d1f253e6 DM	307	if (cpu_online(cpu))
d1f253e6 DM	308	register_cpu_online(cpu);
eff3414b DM	309	}
	310
	311	return 0;
	312	}
	313
	314	subsys_initcall(topology_init);