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Diffstat (limited to 'arch/avr32/kernel/cpu.c')
-rw-r--r--arch/avr32/kernel/cpu.c208
1 files changed, 133 insertions, 75 deletions
diff --git a/arch/avr32/kernel/cpu.c b/arch/avr32/kernel/cpu.c
index 2714cf6452b..0341ae27c9e 100644
--- a/arch/avr32/kernel/cpu.c
+++ b/arch/avr32/kernel/cpu.c
@@ -6,13 +6,14 @@
* published by the Free Software Foundation.
*/
#include <linux/init.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/percpu.h>
#include <linux/param.h>
#include <linux/errno.h>
+#include <linux/clk.h>
#include <asm/setup.h>
#include <asm/sysreg.h>
@@ -25,125 +26,141 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices);
* XXX: If/when a SMP-capable implementation of AVR32 will ever be
* made, we must make sure that the code executes on the correct CPU.
*/
-static ssize_t show_pc0event(struct sys_device *dev, char *buf)
+static ssize_t show_pc0event(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pccr;
pccr = sysreg_read(PCCR);
return sprintf(buf, "0x%lx\n", (pccr >> 12) & 0x3f);
}
-static ssize_t store_pc0event(struct sys_device *dev, const char *buf,
+static ssize_t store_pc0event(struct device *dev,
+ struct device_attribute *attr, const char *buf,
size_t count)
{
unsigned long val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf || val > 0x3f)
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
+ if (val > 0x3f)
return -EINVAL;
val = (val << 12) | (sysreg_read(PCCR) & 0xfffc0fff);
sysreg_write(PCCR, val);
return count;
}
-static ssize_t show_pc0count(struct sys_device *dev, char *buf)
+static ssize_t show_pc0count(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pcnt0;
pcnt0 = sysreg_read(PCNT0);
return sprintf(buf, "%lu\n", pcnt0);
}
-static ssize_t store_pc0count(struct sys_device *dev, const char *buf,
- size_t count)
+static ssize_t store_pc0count(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
unsigned long val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf)
- return -EINVAL;
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
sysreg_write(PCNT0, val);
return count;
}
-static ssize_t show_pc1event(struct sys_device *dev, char *buf)
+static ssize_t show_pc1event(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pccr;
pccr = sysreg_read(PCCR);
return sprintf(buf, "0x%lx\n", (pccr >> 18) & 0x3f);
}
-static ssize_t store_pc1event(struct sys_device *dev, const char *buf,
+static ssize_t store_pc1event(struct device *dev,
+ struct device_attribute *attr, const char *buf,
size_t count)
{
unsigned long val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf || val > 0x3f)
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
+ if (val > 0x3f)
return -EINVAL;
val = (val << 18) | (sysreg_read(PCCR) & 0xff03ffff);
sysreg_write(PCCR, val);
return count;
}
-static ssize_t show_pc1count(struct sys_device *dev, char *buf)
+static ssize_t show_pc1count(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pcnt1;
pcnt1 = sysreg_read(PCNT1);
return sprintf(buf, "%lu\n", pcnt1);
}
-static ssize_t store_pc1count(struct sys_device *dev, const char *buf,
+static ssize_t store_pc1count(struct device *dev,
+ struct device_attribute *attr, const char *buf,
size_t count)
{
unsigned long val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf)
- return -EINVAL;
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
sysreg_write(PCNT1, val);
return count;
}
-static ssize_t show_pccycles(struct sys_device *dev, char *buf)
+static ssize_t show_pccycles(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pccnt;
pccnt = sysreg_read(PCCNT);
return sprintf(buf, "%lu\n", pccnt);
}
-static ssize_t store_pccycles(struct sys_device *dev, const char *buf,
+static ssize_t store_pccycles(struct device *dev,
+ struct device_attribute *attr, const char *buf,
size_t count)
{
unsigned long val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf)
- return -EINVAL;
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
sysreg_write(PCCNT, val);
return count;
}
-static ssize_t show_pcenable(struct sys_device *dev, char *buf)
+static ssize_t show_pcenable(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long pccr;
pccr = sysreg_read(PCCR);
return sprintf(buf, "%c\n", (pccr & 1)?'1':'0');
}
-static ssize_t store_pcenable(struct sys_device *dev, const char *buf,
+static ssize_t store_pcenable(struct device *dev,
+ struct device_attribute *attr, const char *buf,
size_t count)
{
unsigned long pccr, val;
- char *endp;
+ int ret;
- val = simple_strtoul(buf, &endp, 0);
- if (endp == buf)
- return -EINVAL;
+ ret = kstrtoul(buf, 0, &val);
+ if (ret)
+ return ret;
if (val)
val = 1;
@@ -154,12 +171,12 @@ static ssize_t store_pcenable(struct sys_device *dev, const char *buf,
return count;
}
-static SYSDEV_ATTR(pc0event, 0600, show_pc0event, store_pc0event);
-static SYSDEV_ATTR(pc0count, 0600, show_pc0count, store_pc0count);
-static SYSDEV_ATTR(pc1event, 0600, show_pc1event, store_pc1event);
-static SYSDEV_ATTR(pc1count, 0600, show_pc1count, store_pc1count);
-static SYSDEV_ATTR(pccycles, 0600, show_pccycles, store_pccycles);
-static SYSDEV_ATTR(pcenable, 0600, show_pcenable, store_pcenable);
+static DEVICE_ATTR(pc0event, 0600, show_pc0event, store_pc0event);
+static DEVICE_ATTR(pc0count, 0600, show_pc0count, store_pc0count);
+static DEVICE_ATTR(pc1event, 0600, show_pc1event, store_pc1event);
+static DEVICE_ATTR(pc1count, 0600, show_pc1count, store_pc1count);
+static DEVICE_ATTR(pccycles, 0600, show_pccycles, store_pccycles);
+static DEVICE_ATTR(pcenable, 0600, show_pcenable, store_pcenable);
#endif /* CONFIG_PERFORMANCE_COUNTERS */
@@ -173,12 +190,12 @@ static int __init topology_init(void)
register_cpu(c, cpu);
#ifdef CONFIG_PERFORMANCE_COUNTERS
- sysdev_create_file(&c->sysdev, &attr_pc0event);
- sysdev_create_file(&c->sysdev, &attr_pc0count);
- sysdev_create_file(&c->sysdev, &attr_pc1event);
- sysdev_create_file(&c->sysdev, &attr_pc1count);
- sysdev_create_file(&c->sysdev, &attr_pccycles);
- sysdev_create_file(&c->sysdev, &attr_pcenable);
+ device_create_file(&c->dev, &dev_attr_pc0event);
+ device_create_file(&c->dev, &dev_attr_pc0count);
+ device_create_file(&c->dev, &dev_attr_pc1event);
+ device_create_file(&c->dev, &dev_attr_pc1count);
+ device_create_file(&c->dev, &dev_attr_pccycles);
+ device_create_file(&c->dev, &dev_attr_pcenable);
#endif
}
@@ -187,9 +204,20 @@ static int __init topology_init(void)
subsys_initcall(topology_init);
+struct chip_id_map {
+ u16 mid;
+ u16 pn;
+ const char *name;
+};
+
+static const struct chip_id_map chip_names[] = {
+ { .mid = 0x1f, .pn = 0x1e82, .name = "AT32AP700x" },
+};
+#define NR_CHIP_NAMES ARRAY_SIZE(chip_names)
+
static const char *cpu_names[] = {
"Morgan",
- "AP7000",
+ "AP7",
};
#define NR_CPU_NAMES ARRAY_SIZE(cpu_names)
@@ -206,12 +234,32 @@ static const char *mmu_types[] = {
"MPU"
};
+static const char *cpu_feature_flags[] = {
+ "rmw", "dsp", "simd", "ocd", "perfctr", "java", "fpu",
+};
+
+static const char *get_chip_name(struct avr32_cpuinfo *cpu)
+{
+ unsigned int i;
+ unsigned int mid = avr32_get_manufacturer_id(cpu);
+ unsigned int pn = avr32_get_product_number(cpu);
+
+ for (i = 0; i < NR_CHIP_NAMES; i++) {
+ if (chip_names[i].mid == mid && chip_names[i].pn == pn)
+ return chip_names[i].name;
+ }
+
+ return "(unknown)";
+}
+
void __init setup_processor(void)
{
unsigned long config0, config1;
unsigned long features;
unsigned cpu_id, cpu_rev, arch_id, arch_rev, mmu_type;
+ unsigned device_id;
unsigned tmp;
+ unsigned i;
config0 = sysreg_read(CONFIG0);
config1 = sysreg_read(CONFIG1);
@@ -221,11 +269,14 @@ void __init setup_processor(void)
arch_rev = SYSREG_BFEXT(AR, config0);
mmu_type = SYSREG_BFEXT(MMUT, config0);
+ device_id = ocd_read(DID);
+
boot_cpu_data.arch_type = arch_id;
boot_cpu_data.cpu_type = cpu_id;
boot_cpu_data.arch_revision = arch_rev;
boot_cpu_data.cpu_revision = cpu_rev;
boot_cpu_data.tlb_config = mmu_type;
+ boot_cpu_data.device_id = device_id;
tmp = SYSREG_BFEXT(ILSZ, config1);
if (tmp) {
@@ -247,41 +298,34 @@ void __init setup_processor(void)
return;
}
- printk ("CPU: %s [%02x] revision %d (%s revision %d)\n",
+ printk ("CPU: %s chip revision %c\n", get_chip_name(&boot_cpu_data),
+ avr32_get_chip_revision(&boot_cpu_data) + 'A');
+ printk ("CPU: %s [%02x] core revision %d (%s arch revision %d)\n",
cpu_names[cpu_id], cpu_id, cpu_rev,
arch_names[arch_id], arch_rev);
printk ("CPU: MMU configuration: %s\n", mmu_types[mmu_type]);
printk ("CPU: features:");
features = 0;
- if (config0 & SYSREG_BIT(CONFIG0_R)) {
+ if (config0 & SYSREG_BIT(CONFIG0_R))
features |= AVR32_FEATURE_RMW;
- printk(" rmw");
- }
- if (config0 & SYSREG_BIT(CONFIG0_D)) {
+ if (config0 & SYSREG_BIT(CONFIG0_D))
features |= AVR32_FEATURE_DSP;
- printk(" dsp");
- }
- if (config0 & SYSREG_BIT(CONFIG0_S)) {
+ if (config0 & SYSREG_BIT(CONFIG0_S))
features |= AVR32_FEATURE_SIMD;
- printk(" simd");
- }
- if (config0 & SYSREG_BIT(CONFIG0_O)) {
+ if (config0 & SYSREG_BIT(CONFIG0_O))
features |= AVR32_FEATURE_OCD;
- printk(" ocd");
- }
- if (config0 & SYSREG_BIT(CONFIG0_P)) {
+ if (config0 & SYSREG_BIT(CONFIG0_P))
features |= AVR32_FEATURE_PCTR;
- printk(" perfctr");
- }
- if (config0 & SYSREG_BIT(CONFIG0_J)) {
+ if (config0 & SYSREG_BIT(CONFIG0_J))
features |= AVR32_FEATURE_JAVA;
- printk(" java");
- }
- if (config0 & SYSREG_BIT(CONFIG0_F)) {
+ if (config0 & SYSREG_BIT(CONFIG0_F))
features |= AVR32_FEATURE_FPU;
- printk(" fpu");
- }
+
+ for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
+ if (features & (1 << i))
+ printk(" %s", cpu_feature_flags[i]);
+
printk("\n");
boot_cpu_data.features = features;
}
@@ -291,6 +335,8 @@ static int c_show(struct seq_file *m, void *v)
{
unsigned int icache_size, dcache_size;
unsigned int cpu = smp_processor_id();
+ unsigned int freq;
+ unsigned int i;
icache_size = boot_cpu_data.icache.ways *
boot_cpu_data.icache.sets *
@@ -301,15 +347,21 @@ static int c_show(struct seq_file *m, void *v)
seq_printf(m, "processor\t: %d\n", cpu);
+ seq_printf(m, "chip type\t: %s revision %c\n",
+ get_chip_name(&boot_cpu_data),
+ avr32_get_chip_revision(&boot_cpu_data) + 'A');
if (boot_cpu_data.arch_type < NR_ARCH_NAMES)
- seq_printf(m, "cpu family\t: %s revision %d\n",
+ seq_printf(m, "cpu arch\t: %s revision %d\n",
arch_names[boot_cpu_data.arch_type],
boot_cpu_data.arch_revision);
if (boot_cpu_data.cpu_type < NR_CPU_NAMES)
- seq_printf(m, "cpu type\t: %s revision %d\n",
+ seq_printf(m, "cpu core\t: %s revision %d\n",
cpu_names[boot_cpu_data.cpu_type],
boot_cpu_data.cpu_revision);
+ freq = (clk_get_rate(boot_cpu_data.clk) + 500) / 1000;
+ seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, freq % 1000);
+
seq_printf(m, "i-cache\t\t: %dK (%u ways x %u sets x %u)\n",
icache_size >> 10,
boot_cpu_data.icache.ways,
@@ -320,7 +372,13 @@ static int c_show(struct seq_file *m, void *v)
boot_cpu_data.dcache.ways,
boot_cpu_data.dcache.sets,
boot_cpu_data.dcache.linesz);
- seq_printf(m, "bogomips\t: %lu.%02lu\n",
+
+ seq_printf(m, "features\t:");
+ for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
+ if (boot_cpu_data.features & (1 << i))
+ seq_printf(m, " %s", cpu_feature_flags[i]);
+
+ seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
boot_cpu_data.loops_per_jiffy / (500000/HZ),
(boot_cpu_data.loops_per_jiffy / (5000/HZ)) % 100);
@@ -343,7 +401,7 @@ static void c_stop(struct seq_file *m, void *v)
}
-struct seq_operations cpuinfo_op = {
+const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 20:26:18 +0000