[SPARC64]: Convert cpu_find_by_*() interface to in-kernel PROM device tree.

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 104 insertions, 103 deletions

diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index 136f872a8a57..389301c95cb2 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -133,38 +133,44 @@ static const char *cpu_mid_prop(void)
         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 *) &reg, 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 @@ static int check_cpu_node(int nd, int *cur_inst,
         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 @@ static int __cpu_find_by(int (*compare)(int, int, void *), void *compare_arg,
         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 @@ static int cpu_instance_compare(int nd, int instance, void *_arg)
         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 @@ void __init device_scan(void)
 
 #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 91d1aa44efc1..4ce7b4620c09 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1455,16 +1455,13 @@ void sabre_init(struct device_node *dp, char *model_name)
                                 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 f03d52d0b88d..f62bf3a2de1a 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 smp_bogo(struct seq_file *m)
 
 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 @@ static int __devinit smp_boot_one_cpu(unsigned int cpu)
 
                 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 @@ int setup_profiling_timer(unsigned int multiplier)
 
 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 @@ static void __init smp_tune_scheduling(void)
                (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 0f00a99927e9..aa5438a4fd50 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 @@ try_isa_clock:
 /* 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 @@ static unsigned long sparc64_init_timers(void)
                 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 5059cbd4feee..1ff34b019f3f 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 @@ extern unsigned int cheetah_deferred_trap_vector[], cheetah_deferred_trap_vector
 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 @@ void __init cheetah_ecache_flush_init(void)
         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 @@ void __init cheetah_ecache_flush_init(void)
         }
 
         /* 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 dea3e73f0955..a68b0bb05958 100644
--- a/include/asm-sparc64/oplib.h
+++ b/include/asm-sparc64/oplib.h
@@ -323,8 +323,9 @@ extern int prom_pathtoinode(const char *path);
 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);