+++ /dev/null
-/*
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.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>
-
-static DEFINE_PER_CPU(struct cpu, cpu_devices);
-
-#ifdef CONFIG_PERFORMANCE_COUNTERS
-
-/*
- * 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 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 device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- 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 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 device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCNT0, val);
-
- return count;
-}
-
-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 device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- 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 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 device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCNT1, val);
-
- return count;
-}
-
-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 device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- sysreg_write(PCCNT, val);
-
- return count;
-}
-
-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 device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
-{
- unsigned long pccr, val;
- int ret;
-
- ret = kstrtoul(buf, 0, &val);
- if (ret)
- return ret;
- if (val)
- val = 1;
-
- pccr = sysreg_read(PCCR);
- pccr = (pccr & ~1UL) | val;
- sysreg_write(PCCR, pccr);
-
- return count;
-}
-
-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 */
-
-static int __init topology_init(void)
-{
- int cpu;
-
- for_each_possible_cpu(cpu) {
- struct cpu *c = &per_cpu(cpu_devices, cpu);
-
- register_cpu(c, cpu);
-
-#ifdef CONFIG_PERFORMANCE_COUNTERS
- 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
- }
-
- return 0;
-}
-
-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",
- "AP7",
-};
-#define NR_CPU_NAMES ARRAY_SIZE(cpu_names)
-
-static const char *arch_names[] = {
- "AVR32A",
- "AVR32B",
-};
-#define NR_ARCH_NAMES ARRAY_SIZE(arch_names)
-
-static const char *mmu_types[] = {
- "No MMU",
- "ITLB and DTLB",
- "Shared TLB",
- "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);
- cpu_id = SYSREG_BFEXT(PROCESSORID, config0);
- cpu_rev = SYSREG_BFEXT(PROCESSORREVISION, config0);
- arch_id = SYSREG_BFEXT(AT, config0);
- 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) {
- boot_cpu_data.icache.ways = 1 << SYSREG_BFEXT(IASS, config1);
- boot_cpu_data.icache.sets = 1 << SYSREG_BFEXT(ISET, config1);
- boot_cpu_data.icache.linesz = 1 << (tmp + 1);
- }
- tmp = SYSREG_BFEXT(DLSZ, config1);
- if (tmp) {
- boot_cpu_data.dcache.ways = 1 << SYSREG_BFEXT(DASS, config1);
- boot_cpu_data.dcache.sets = 1 << SYSREG_BFEXT(DSET, config1);
- boot_cpu_data.dcache.linesz = 1 << (tmp + 1);
- }
-
- if ((cpu_id >= NR_CPU_NAMES) || (arch_id >= NR_ARCH_NAMES)) {
- printk ("Unknown CPU configuration (ID %02x, arch %02x), "
- "continuing anyway...\n",
- cpu_id, arch_id);
- return;
- }
-
- 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))
- features |= AVR32_FEATURE_RMW;
- if (config0 & SYSREG_BIT(CONFIG0_D))
- features |= AVR32_FEATURE_DSP;
- if (config0 & SYSREG_BIT(CONFIG0_S))
- features |= AVR32_FEATURE_SIMD;
- if (config0 & SYSREG_BIT(CONFIG0_O))
- features |= AVR32_FEATURE_OCD;
- if (config0 & SYSREG_BIT(CONFIG0_P))
- features |= AVR32_FEATURE_PCTR;
- if (config0 & SYSREG_BIT(CONFIG0_J))
- features |= AVR32_FEATURE_JAVA;
- if (config0 & SYSREG_BIT(CONFIG0_F))
- features |= AVR32_FEATURE_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;
-}
-
-#ifdef CONFIG_PROC_FS
-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 *
- boot_cpu_data.icache.linesz;
- dcache_size = boot_cpu_data.dcache.ways *
- boot_cpu_data.dcache.sets *
- boot_cpu_data.dcache.linesz;
-
- 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 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 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,
- boot_cpu_data.icache.sets,
- boot_cpu_data.icache.linesz);
- seq_printf(m, "d-cache\t\t: %dK (%u ways x %u sets x %u)\n",
- dcache_size >> 10,
- boot_cpu_data.dcache.ways,
- boot_cpu_data.dcache.sets,
- boot_cpu_data.dcache.linesz);
-
- 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);
-
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < 1 ? (void *)1 : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return NULL;
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = c_show
-};
-#endif /* CONFIG_PROC_FS */
git.samba.org / sfrench / cifs-2.6.git / blobdiff