[SPARC64]: Use machine description and OBP properly for cpu probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 24fdf1d..f7fa873 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -40,6 +40,7 @@
#include <asm/tlb.h>
#include <asm/sections.h>
#include <asm/prom.h>
+#include <asm/mdesc.h>
extern void calibrate_delay(void);
@@ -75,53 +76,6 @@
i, cpu_data(i).clock_tick);
}
-void __init smp_store_cpu_info(int id)
-{
- struct device_node *dp;
- int def;
-
- cpu_data(id).udelay_val = loops_per_jiffy;
-
- 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 =
- of_getintprop_default(dp, "dcache-size", def);
-
- def = 32;
- cpu_data(id).dcache_line_size =
- of_getintprop_default(dp, "dcache-line-size", def);
-
- def = 16 * 1024;
- cpu_data(id).icache_size =
- of_getintprop_default(dp, "icache-size", def);
-
- def = 32;
- cpu_data(id).icache_line_size =
- of_getintprop_default(dp, "icache-line-size", def);
-
- def = ((tlb_type == hypervisor) ?
- (3 * 1024 * 1024) :
- (4 * 1024 * 1024));
- cpu_data(id).ecache_size =
- of_getintprop_default(dp, "ecache-size", def);
-
- def = 64;
- cpu_data(id).ecache_line_size =
- of_getintprop_default(dp, "ecache-line-size", def);
-
- printk("CPU[%d]: Caches "
- "D[sz(%d):line_sz(%d)] "
- "I[sz(%d):line_sz(%d)] "
- "E[sz(%d):line_sz(%d)]\n",
- id,
- cpu_data(id).dcache_size, cpu_data(id).dcache_line_size,
- cpu_data(id).icache_size, cpu_data(id).icache_line_size,
- cpu_data(id).ecache_size, cpu_data(id).ecache_line_size);
-}
-
extern void setup_sparc64_timer(void);
static volatile unsigned long callin_flag = 0;
@@ -145,7 +99,7 @@
local_irq_enable();
calibrate_delay();
- smp_store_cpu_info(cpuid);
+ cpu_data(cpuid).udelay_val = loops_per_jiffy;
callin_flag = 1;
__asm__ __volatile__("membar #Sync\n\t"
"flush %%g6" : : : "memory");
@@ -340,9 +294,8 @@
prom_startcpu_cpuid(cpu, entry, cookie);
} else {
- struct device_node *dp;
+ struct device_node *dp = of_find_node_by_cpuid(cpu);
- cpu_find_by_mid(cpu, &dp);
prom_startcpu(dp->node, entry, cookie);
}
@@ -1191,23 +1144,14 @@
static void __init smp_tune_scheduling(void)
{
- struct device_node *dp;
- int instance;
- unsigned int def, smallest = ~0U;
+ unsigned int smallest = ~0U;
+ int i;
- def = ((tlb_type == hypervisor) ?
- (3 * 1024 * 1024) :
- (4 * 1024 * 1024));
+ for (i = 0; i < NR_CPUS; i++) {
+ unsigned int val = cpu_data(i).ecache_size;
- instance = 0;
- while (!cpu_find_by_instance(instance, &dp, NULL)) {
- unsigned int val;
-
- val = of_getintprop_default(dp, "ecache-size", def);
- if (val < smallest)
+ if (val && val < smallest)
smallest = val;
-
- instance++;
}
/* Any value less than 256K is nonsense. */
@@ -1230,60 +1174,44 @@
int i;
if (num_possible_cpus() > max_cpus) {
- int instance, mid;
-
- instance = 0;
- while (!cpu_find_by_instance(instance, NULL, &mid)) {
- if (mid != boot_cpu_id) {
- cpu_clear(mid, phys_cpu_present_map);
- cpu_clear(mid, cpu_present_map);
+ for_each_possible_cpu(i) {
+ if (i != boot_cpu_id) {
+ cpu_clear(i, phys_cpu_present_map);
+ cpu_clear(i, cpu_present_map);
if (num_possible_cpus() <= max_cpus)
break;
}
- instance++;
}
}
- for_each_possible_cpu(i) {
- if (tlb_type == hypervisor) {
- int j;
-
- /* XXX get this mapping from machine description */
- for_each_possible_cpu(j) {
- if ((j >> 2) == (i >> 2))
- cpu_set(j, cpu_sibling_map[i]);
- }
- } else {
- cpu_set(i, cpu_sibling_map[i]);
- }
- }
-
- smp_store_cpu_info(boot_cpu_id);
+ cpu_data(boot_cpu_id).udelay_val = loops_per_jiffy;
smp_tune_scheduling();
}
-/* Set this up early so that things like the scheduler can init
- * properly. We use the same cpu mask for both the present and
- * possible cpu map.
- */
-void __init smp_setup_cpu_possible_map(void)
-{
- int instance, mid;
-
- instance = 0;
- while (!cpu_find_by_instance(instance, NULL, &mid)) {
- if (mid < NR_CPUS) {
- cpu_set(mid, phys_cpu_present_map);
- cpu_set(mid, cpu_present_map);
- }
- instance++;
- }
-}
-
void __devinit smp_prepare_boot_cpu(void)
{
}
+void __devinit smp_fill_in_sib_core_maps(void)
+{
+ unsigned int i;
+
+ for_each_possible_cpu(i) {
+ unsigned int j;
+
+ if (cpu_data(i).core_id == 0) {
+ cpu_set(i, cpu_sibling_map[i]);
+ continue;
+ }
+
+ for_each_possible_cpu(j) {
+ if (cpu_data(i).core_id ==
+ cpu_data(j).core_id)
+ cpu_set(j, cpu_sibling_map[i]);
+ }
+ }
+}
+
int __cpuinit __cpu_up(unsigned int cpu)
{
int ret = smp_boot_one_cpu(cpu);
@@ -1337,7 +1265,7 @@
EXPORT_SYMBOL(__per_cpu_base);
EXPORT_SYMBOL(__per_cpu_shift);
-void __init setup_per_cpu_areas(void)
+void __init real_setup_per_cpu_areas(void)
{
unsigned long goal, size, i;
char *ptr;