[SPARC64]: Convert cpu_find_by_*() interface to in-kernel PROM device tree.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index 136f872..389301c 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -133,38 +133,44 @@
return "portid";
}
-static int get_cpu_mid(int prom_node)
+static int get_cpu_mid(struct device_node *dp)
{
+ struct property *prop;
+
if (tlb_type == hypervisor) {
- struct linux_prom64_registers reg;
+ struct linux_prom64_registers *reg;
+ int len;
- if (prom_getproplen(prom_node, "cpuid") == 4)
- return prom_getintdefault(prom_node, "cpuid", 0);
+ prop = of_find_property(dp, "cpuid", &len);
+ if (prop && len == 4)
+ return *(int *) prop->value;
- prom_getproperty(prom_node, "reg", (char *) ®, sizeof(reg));
- return (reg.phys_addr >> 32) & 0x0fffffffUL;
+ prop = of_find_property(dp, "reg", NULL);
+ reg = prop->value;
+ return (reg[0].phys_addr >> 32) & 0x0fffffffUL;
} else {
const char *prop_name = cpu_mid_prop();
- return prom_getintdefault(prom_node, prop_name, 0);
+ prop = of_find_property(dp, prop_name, NULL);
+ if (prop)
+ return *(int *) prop->value;
+ return 0;
}
}
-static int check_cpu_node(int nd, int *cur_inst,
- int (*compare)(int, int, void *), void *compare_arg,
- int *prom_node, int *mid)
+static int check_cpu_node(struct device_node *dp, int *cur_inst,
+ int (*compare)(struct device_node *, int, void *),
+ void *compare_arg,
+ struct device_node **dev_node, int *mid)
{
- char node_str[128];
-
- prom_getstring(nd, "device_type", node_str, sizeof(node_str));
- if (strcmp(node_str, "cpu"))
+ if (strcmp(dp->type, "cpu"))
return -ENODEV;
- if (!compare(nd, *cur_inst, compare_arg)) {
- if (prom_node)
- *prom_node = nd;
+ if (!compare(dp, *cur_inst, compare_arg)) {
+ if (dev_node)
+ *dev_node = dp;
if (mid)
- *mid = get_cpu_mid(nd);
+ *mid = get_cpu_mid(dp);
return 0;
}
@@ -173,25 +179,18 @@
return -ENODEV;
}
-static int __cpu_find_by(int (*compare)(int, int, void *), void *compare_arg,
- int *prom_node, int *mid)
+static int __cpu_find_by(int (*compare)(struct device_node *, int, void *),
+ void *compare_arg,
+ struct device_node **dev_node, int *mid)
{
- int nd, cur_inst, err;
+ struct device_node *dp;
+ int cur_inst;
- nd = prom_root_node;
cur_inst = 0;
-
- err = check_cpu_node(nd, &cur_inst,
- compare, compare_arg,
- prom_node, mid);
- if (err == 0)
- return 0;
-
- nd = prom_getchild(nd);
- while ((nd = prom_getsibling(nd)) != 0) {
- err = check_cpu_node(nd, &cur_inst,
- compare, compare_arg,
- prom_node, mid);
+ for_each_node_by_type(dp, "cpu") {
+ int err = check_cpu_node(dp, &cur_inst,
+ compare, compare_arg,
+ dev_node, mid);
if (err == 0)
return 0;
}
@@ -199,7 +198,7 @@
return -ENODEV;
}
-static int cpu_instance_compare(int nd, int instance, void *_arg)
+static int cpu_instance_compare(struct device_node *dp, int instance, void *_arg)
{
int desired_instance = (int) (long) _arg;
@@ -208,27 +207,27 @@
return -ENODEV;
}
-int cpu_find_by_instance(int instance, int *prom_node, int *mid)
+int cpu_find_by_instance(int instance, struct device_node **dev_node, int *mid)
{
return __cpu_find_by(cpu_instance_compare, (void *)(long)instance,
- prom_node, mid);
+ dev_node, mid);
}
-static int cpu_mid_compare(int nd, int instance, void *_arg)
+static int cpu_mid_compare(struct device_node *dp, int instance, void *_arg)
{
int desired_mid = (int) (long) _arg;
int this_mid;
- this_mid = get_cpu_mid(nd);
+ this_mid = get_cpu_mid(dp);
if (this_mid == desired_mid)
return 0;
return -ENODEV;
}
-int cpu_find_by_mid(int mid, int *prom_node)
+int cpu_find_by_mid(int mid, struct device_node **dev_node)
{
return __cpu_find_by(cpu_mid_compare, (void *)(long)mid,
- prom_node, NULL);
+ dev_node, NULL);
}
void __init device_scan(void)
@@ -240,50 +239,47 @@
#ifndef CONFIG_SMP
{
- int err, cpu_node, def;
+ struct device_node *dp;
+ int err, def;
- err = cpu_find_by_instance(0, &cpu_node, NULL);
+ err = cpu_find_by_instance(0, &dp, NULL);
if (err) {
prom_printf("No cpu nodes, cannot continue\n");
prom_halt();
}
- cpu_data(0).clock_tick = prom_getintdefault(cpu_node,
- "clock-frequency",
- 0);
+ cpu_data(0).clock_tick =
+ of_getintprop_default(dp, "clock-frequency", 0);
def = ((tlb_type == hypervisor) ?
(8 * 1024) :
(16 * 1024));
- cpu_data(0).dcache_size = prom_getintdefault(cpu_node,
- "dcache-size",
- def);
+ cpu_data(0).dcache_size = of_getintprop_default(dp,
+ "dcache-size",
+ def);
def = 32;
cpu_data(0).dcache_line_size =
- prom_getintdefault(cpu_node, "dcache-line-size",
- def);
+ of_getintprop_default(dp, "dcache-line-size", def);
def = 16 * 1024;
- cpu_data(0).icache_size = prom_getintdefault(cpu_node,
- "icache-size",
- def);
+ cpu_data(0).icache_size = of_getintprop_default(dp,
+ "icache-size",
+ def);
def = 32;
cpu_data(0).icache_line_size =
- prom_getintdefault(cpu_node, "icache-line-size",
- def);
+ of_getintprop_default(dp, "icache-line-size", def);
def = ((tlb_type == hypervisor) ?
(3 * 1024 * 1024) :
(4 * 1024 * 1024));
- cpu_data(0).ecache_size = prom_getintdefault(cpu_node,
- "ecache-size",
- def);
+ cpu_data(0).ecache_size = of_getintprop_default(dp,
+ "ecache-size",
+ def);
def = 64;
cpu_data(0).ecache_line_size =
- prom_getintdefault(cpu_node, "ecache-line-size",
- def);
+ of_getintprop_default(dp, "ecache-line-size", def);
printk("CPU[0]: Caches "
"D[sz(%d):line_sz(%d)] "
"I[sz(%d):line_sz(%d)] "
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 91d1aa44..4ce7b46 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1455,16 +1455,13 @@
hummingbird_p = 1;
}
if (!hummingbird_p) {
- char compat[64];
- int cpu_node;
+ struct device_node *dp;
/* Of course, Sun has to encode things a thousand
* different ways, inconsistently.
*/
- cpu_find_by_instance(0, &cpu_node, NULL);
- if (prom_getproperty(cpu_node, "name",
- compat, sizeof(compat)) > 0 &&
- !strcmp(compat, "SUNW,UltraSPARC-IIe"))
+ cpu_find_by_instance(0, &dp, NULL);
+ if (!strcmp(dp->name, "SUNW,UltraSPARC-IIe"))
hummingbird_p = 1;
}
}
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index f03d52d..f62bf3a 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -39,6 +39,7 @@
#include <asm/starfire.h>
#include <asm/tlb.h>
#include <asm/sections.h>
+#include <asm/prom.h>
extern void calibrate_delay(void);
@@ -76,41 +77,42 @@
void __init smp_store_cpu_info(int id)
{
- int cpu_node, def;
+ struct device_node *dp;
+ int def;
/* multiplier and counter set by
smp_setup_percpu_timer() */
cpu_data(id).udelay_val = loops_per_jiffy;
- cpu_find_by_mid(id, &cpu_node);
- cpu_data(id).clock_tick = prom_getintdefault(cpu_node,
- "clock-frequency", 0);
+ cpu_find_by_mid(id, &dp);
+ cpu_data(id).clock_tick =
+ of_getintprop_default(dp, "clock-frequency", 0);
def = ((tlb_type == hypervisor) ? (8 * 1024) : (16 * 1024));
- cpu_data(id).dcache_size = prom_getintdefault(cpu_node, "dcache-size",
- def);
+ cpu_data(id).dcache_size =
+ of_getintprop_default(dp, "dcache-size", def);
def = 32;
cpu_data(id).dcache_line_size =
- prom_getintdefault(cpu_node, "dcache-line-size", def);
+ of_getintprop_default(dp, "dcache-line-size", def);
def = 16 * 1024;
- cpu_data(id).icache_size = prom_getintdefault(cpu_node, "icache-size",
- def);
+ cpu_data(id).icache_size =
+ of_getintprop_default(dp, "icache-size", def);
def = 32;
cpu_data(id).icache_line_size =
- prom_getintdefault(cpu_node, "icache-line-size", def);
+ of_getintprop_default(dp, "icache-line-size", def);
def = ((tlb_type == hypervisor) ?
(3 * 1024 * 1024) :
(4 * 1024 * 1024));
- cpu_data(id).ecache_size = prom_getintdefault(cpu_node, "ecache-size",
- def);
+ cpu_data(id).ecache_size =
+ of_getintprop_default(dp, "ecache-size", def);
def = 64;
cpu_data(id).ecache_line_size =
- prom_getintdefault(cpu_node, "ecache-line-size", def);
+ of_getintprop_default(dp, "ecache-line-size", def);
printk("CPU[%d]: Caches "
"D[sz(%d):line_sz(%d)] "
@@ -342,10 +344,10 @@
prom_startcpu_cpuid(cpu, entry, cookie);
} else {
- int cpu_node;
+ struct device_node *dp;
- cpu_find_by_mid(cpu, &cpu_node);
- prom_startcpu(cpu_node, entry, cookie);
+ cpu_find_by_mid(cpu, &dp);
+ prom_startcpu(dp->node, entry, cookie);
}
for (timeout = 0; timeout < 5000000; timeout++) {
@@ -1289,7 +1291,8 @@
static void __init smp_tune_scheduling(void)
{
- int instance, node;
+ struct device_node *dp;
+ int instance;
unsigned int def, smallest = ~0U;
def = ((tlb_type == hypervisor) ?
@@ -1297,10 +1300,10 @@
(4 * 1024 * 1024));
instance = 0;
- while (!cpu_find_by_instance(instance, &node, NULL)) {
+ while (!cpu_find_by_instance(instance, &dp, NULL)) {
unsigned int val;
- val = prom_getintdefault(node, "ecache-size", def);
+ val = of_getintprop_default(dp, "ecache-size", def);
if (val < smallest)
smallest = val;
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 0f00a99..aa5438a 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -48,6 +48,7 @@
#include <asm/sections.h>
#include <asm/cpudata.h>
#include <asm/uaccess.h>
+#include <asm/prom.h>
DEFINE_SPINLOCK(mostek_lock);
DEFINE_SPINLOCK(rtc_lock);
@@ -983,12 +984,14 @@
/* This is gets the master TICK_INT timer going. */
static unsigned long sparc64_init_timers(void)
{
+ struct device_node *dp;
+ struct property *prop;
unsigned long clock;
- int node;
#ifdef CONFIG_SMP
extern void smp_tick_init(void);
#endif
+ dp = of_find_node_by_path("/");
if (tlb_type == spitfire) {
unsigned long ver, manuf, impl;
@@ -999,18 +1002,17 @@
if (manuf == 0x17 && impl == 0x13) {
/* Hummingbird, aka Ultra-IIe */
tick_ops = &hbtick_operations;
- node = prom_root_node;
- clock = prom_getint(node, "stick-frequency");
+ prop = of_find_property(dp, "stick-frequency", NULL);
} else {
tick_ops = &tick_operations;
- cpu_find_by_instance(0, &node, NULL);
- clock = prom_getint(node, "clock-frequency");
+ cpu_find_by_instance(0, &dp, NULL);
+ prop = of_find_property(dp, "clock-frequency", NULL);
}
} else {
tick_ops = &stick_operations;
- node = prom_root_node;
- clock = prom_getint(node, "stick-frequency");
+ prop = of_find_property(dp, "stick-frequency", NULL);
}
+ clock = *(unsigned int *) prop->value;
timer_tick_offset = clock / HZ;
#ifdef CONFIG_SMP
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 5059cbd..1ff34b0 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -42,6 +42,7 @@
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
+#include <asm/prom.h>
ATOMIC_NOTIFIER_HEAD(sparc64die_chain);
@@ -807,7 +808,8 @@
void __init cheetah_ecache_flush_init(void)
{
unsigned long largest_size, smallest_linesize, order, ver;
- int node, i, instance;
+ struct device_node *dp;
+ int i, instance, sz;
/* Scan all cpu device tree nodes, note two values:
* 1) largest E-cache size
@@ -817,14 +819,14 @@
smallest_linesize = ~0UL;
instance = 0;
- while (!cpu_find_by_instance(instance, &node, NULL)) {
+ while (!cpu_find_by_instance(instance, &dp, NULL)) {
unsigned long val;
- val = prom_getintdefault(node, "ecache-size",
- (2 * 1024 * 1024));
+ val = of_getintprop_default(dp, "ecache-size",
+ (2 * 1024 * 1024));
if (val > largest_size)
largest_size = val;
- val = prom_getintdefault(node, "ecache-line-size", 64);
+ val = of_getintprop_default(dp, "ecache-line-size", 64);
if (val < smallest_linesize)
smallest_linesize = val;
instance++;
@@ -849,16 +851,16 @@
}
/* Now allocate error trap reporting scoreboard. */
- node = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
+ sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
for (order = 0; order < MAX_ORDER; order++) {
- if ((PAGE_SIZE << order) >= node)
+ if ((PAGE_SIZE << order) >= sz)
break;
}
cheetah_error_log = (struct cheetah_err_info *)
__get_free_pages(GFP_KERNEL, order);
if (!cheetah_error_log) {
prom_printf("cheetah_ecache_flush_init: Failed to allocate "
- "error logging scoreboard (%d bytes).\n", node);
+ "error logging scoreboard (%d bytes).\n", sz);
prom_halt();
}
memset(cheetah_error_log, 0, PAGE_SIZE << order);
diff --git a/include/asm-sparc64/oplib.h b/include/asm-sparc64/oplib.h
index dea3e73..a68b0bb 100644
--- a/include/asm-sparc64/oplib.h
+++ b/include/asm-sparc64/oplib.h
@@ -323,8 +323,9 @@
extern int prom_inst2pkg(int);
/* CPU probing helpers. */
-int cpu_find_by_instance(int instance, int *prom_node, int *mid);
-int cpu_find_by_mid(int mid, int *prom_node);
+struct device_node;
+int cpu_find_by_instance(int instance, struct device_node **dev_node, int *mid);
+int cpu_find_by_mid(int mid, struct device_node **prom_node);
/* Client interface level routines. */
extern void prom_set_trap_table(unsigned long tba);