Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / arch / sparc / kernel / sun4d_smp.c

diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index b141b7e..3ff4edd 100644 (file)
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -42,16 +42,11 @@ extern ctxd_t *srmmu_ctx_table_phys;
 
 extern void calibrate_delay(void);
 
-extern volatile int smp_processors_ready;
-extern int smp_num_cpus;
+static volatile int smp_processors_ready = 0;
 static int smp_highest_cpu;
 extern volatile unsigned long cpu_callin_map[NR_CPUS];
 extern cpuinfo_sparc cpu_data[NR_CPUS];
 extern unsigned char boot_cpu_id;
-extern int smp_activated;
-extern volatile int __cpu_number_map[NR_CPUS];
-extern volatile int __cpu_logical_map[NR_CPUS];
-extern volatile unsigned long ipi_count;
 extern volatile int smp_process_available;
 
 extern cpumask_t smp_commenced_mask;
@@ -144,6 +139,8 @@ void __init smp4d_callin(void)
        spin_lock_irqsave(&sun4d_imsk_lock, flags);
        cc_set_imsk(cc_get_imsk() & ~0x4000); /* Allow PIL 14 as well */
        spin_unlock_irqrestore(&sun4d_imsk_lock, flags);
+       cpu_set(cpuid, cpu_online_map);
+
 }
 
 extern void init_IRQ(void);
@@ -160,51 +157,24 @@ extern unsigned long trapbase_cpu3[];
 
 void __init smp4d_boot_cpus(void)
 {
-       int cpucount = 0;
-       int i, mid;
-
-       printk("Entering SMP Mode...\n");
-       
        if (boot_cpu_id)
                current_set[0] = NULL;
-
-       local_irq_enable();
-       cpus_clear(cpu_present_map);
-
-       /* XXX This whole thing has to go.  See sparc64. */
-       for (i = 0; !cpu_find_by_instance(i, NULL, &mid); i++)
-               cpu_set(mid, cpu_present_map);
-       SMP_PRINTK(("cpu_present_map %08lx\n", cpus_addr(cpu_present_map)[0]));
-       for(i=0; i < NR_CPUS; i++)
-               __cpu_number_map[i] = -1;
-       for(i=0; i < NR_CPUS; i++)
-               __cpu_logical_map[i] = -1;
-       __cpu_number_map[boot_cpu_id] = 0;
-       __cpu_logical_map[0] = boot_cpu_id;
-       current_thread_info()->cpu = boot_cpu_id;
-       smp_store_cpu_info(boot_cpu_id);
        smp_setup_percpu_timer();
        local_flush_cache_all();
-       if (cpu_find_by_instance(1, NULL, NULL))
-               return;  /* Not an MP box. */
-       SMP_PRINTK(("Iterating over CPUs\n"));
-       for(i = 0; i < NR_CPUS; i++) {
-               if(i == boot_cpu_id)
-                       continue;
-
-               if (cpu_isset(i, cpu_present_map)) {
+}
+
+int smp4d_boot_one_cpu(int i)
+{
                        extern unsigned long sun4d_cpu_startup;
                        unsigned long *entry = &sun4d_cpu_startup;
                        struct task_struct *p;
                        int timeout;
-                       int no;
+                       int cpu_node;
 
+                       cpu_find_by_instance(i, &cpu_node,NULL);
                        /* Cook up an idler for this guy. */
                        p = fork_idle(i);
-                       cpucount++;
                        current_set[i] = task_thread_info(p);
-                       for (no = 0; !cpu_find_by_instance(no, NULL, &mid)
-                                    && mid != i; no++) ;
 
                        /*
                         * Initialize the contexts table
@@ -216,9 +186,9 @@ void __init smp4d_boot_cpus(void)
                        smp_penguin_ctable.reg_size = 0;
 
                        /* whirrr, whirrr, whirrrrrrrrr... */
-                       SMP_PRINTK(("Starting CPU %d at %p task %d node %08x\n", i, entry, cpucount, cpu_data(no).prom_node));
+                       SMP_PRINTK(("Starting CPU %d at %p \n", i, entry));
                        local_flush_cache_all();
-                       prom_startcpu(cpu_data(no).prom_node,
+                       prom_startcpu(cpu_node,
                                      &smp_penguin_ctable, 0, (char *)entry);
                                      
                        SMP_PRINTK(("prom_startcpu returned :)\n"));
@@ -230,39 +200,30 @@ void __init smp4d_boot_cpus(void)
                                udelay(200);
                        }
                        
-                       if(cpu_callin_map[i]) {
-                               /* Another "Red Snapper". */
-                               __cpu_number_map[i] = cpucount;
-                               __cpu_logical_map[cpucount] = i;
-                       } else {
-                               cpucount--;
-                               printk("Processor %d is stuck.\n", i);
-                       }
-               }
-               if(!(cpu_callin_map[i])) {
-                       cpu_clear(i, cpu_present_map);
-                       __cpu_number_map[i] = -1;
-               }
+       if (!(cpu_callin_map[i])) {
+               printk("Processor %d is stuck.\n", i);
+               return -ENODEV;
+
        }
        local_flush_cache_all();
-       if(cpucount == 0) {
-               printk("Error: only one Processor found.\n");
-               cpu_present_map = cpumask_of_cpu(hard_smp4d_processor_id());
-       } else {
-               unsigned long bogosum = 0;
-               
-               for_each_present_cpu(i) {
-                       bogosum += cpu_data(i).udelay_val;
-                       smp_highest_cpu = i;
+       return 0;
+}
+
+void __init smp4d_smp_done(void)
+{
+       int i, first;
+       int *prev;
+
+       /* setup cpu list for irq rotation */
+       first = 0;
+       prev = &first;
+       for (i = 0; i < NR_CPUS; i++)
+               if (cpu_online(i)) {
+                       *prev = i;
+                       prev = &cpu_data(i).next;
                }
-               SMP_PRINTK(("Total of %d Processors activated (%lu.%02lu BogoMIPS).\n", cpucount + 1, bogosum/(500000/HZ), (bogosum/(5000/HZ))%100));
-               printk("Total of %d Processors activated (%lu.%02lu BogoMIPS).\n",
-                      cpucount + 1,
-                      bogosum/(500000/HZ),
-                      (bogosum/(5000/HZ))%100);
-               smp_activated = 1;
-               smp_num_cpus = cpucount + 1;
-       }
+       *prev = first;
+       local_flush_cache_all();
 
        /* Free unneeded trap tables */
        ClearPageReserved(virt_to_page(trapbase_cpu1));
@@ -334,7 +295,7 @@ void smp4d_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2,
                        register int i;
 
                        mask = cpumask_of_cpu(hard_smp4d_processor_id());
-                       cpus_andnot(mask, cpu_present_map, mask);
+                       cpus_andnot(mask, cpu_online_map, mask);
                        for(i = 0; i <= high; i++) {
                                if (cpu_isset(i, mask)) {
                                        ccall_info.processors_in[i] = 0;