Merge branch 'master'

9 files changed, 217 insertions, 145 deletions

diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index adba9dfee35..af90a5f9ab5 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -15,6 +15,7 @@
 
 #include <asm/page.h>
 #include <asm/oplib.h>
+#include <asm/prom.h>
 #include <asm/smp.h>
 #include <asm/system.h>
 #include <asm/cpudata.h>
@@ -34,12 +35,6 @@ static int check_cpu_node(int nd, int *cur_inst,
 			  int (*compare)(int, int, void *), void *compare_arg,
 			  int *prom_node, int *mid)
 {
-	char node_str[128];
-
-	prom_getstring(nd, "device_type", node_str, sizeof(node_str));
-	if (strcmp(node_str, "cpu"))
-		return -ENODEV;
-	
 	if (!compare(nd, *cur_inst, compare_arg)) {
 		if (prom_node)
 			*prom_node = nd;
@@ -59,20 +54,14 @@ static int check_cpu_node(int nd, int *cur_inst,
 static int __cpu_find_by(int (*compare)(int, int, void *), void *compare_arg,
 			 int *prom_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)
-		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->node, &cur_inst,
+					 compare, compare_arg,
+					 prom_node, mid);
 		if (!err)
 			return 0;
 	}
diff --git a/arch/sparc/kernel/irq.c b/arch/sparc/kernel/irq.c
index cde73327ca9..72f0201051a 100644
--- a/arch/sparc/kernel/irq.c
+++ b/arch/sparc/kernel/irq.c
@@ -329,7 +329,7 @@ void handler_irq(int irq, struct pt_regs * regs)
 	disable_pil_irq(irq);
 #ifdef CONFIG_SMP
 	/* Only rotate on lower priority IRQ's (scsi, ethernet, etc.). */
-	if(irq < 10)
+	if((sparc_cpu_model==sun4m) && (irq < 10))
 		smp4m_irq_rotate(cpu);
 #endif
 	action = sparc_irq[irq].action;
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index 5a2faad5d04..97bf87e8cdd 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -596,14 +596,41 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
 		static int pil_to_sbus[] = {
 			0, 0, 1, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 0,
 		};
-		struct device_node *busp = dp->parent;
+		struct device_node *io_unit, *sbi = dp->parent;
 		struct linux_prom_registers *regs;
-		int board = of_getintprop_default(busp, "board#", 0);
-		int slot;
+		int board, slot;
+
+		while (sbi) {
+			if (!strcmp(sbi->name, "sbi"))
+				break;
+
+			sbi = sbi->parent;
+		}
+		if (!sbi)
+			goto build_resources;
 
 		regs = of_get_property(dp, "reg", NULL);
+		if (!regs)
+			goto build_resources;
+
 		slot = regs->which_io;
 
+		/* If SBI's parent is not io-unit or the io-unit lacks
+		 * a "board#" property, something is very wrong.
+		 */
+		if (!sbi->parent || strcmp(sbi->parent->name, "io-unit")) {
+			printk("%s: Error, parent is not io-unit.\n",
+			       sbi->full_name);
+			goto build_resources;
+		}
+		io_unit = sbi->parent;
+		board = of_getintprop_default(io_unit, "board#", -1);
+		if (board == -1) {
+			printk("%s: Error, lacks board# property.\n",
+			       io_unit->full_name);
+			goto build_resources;
+		}
+
 		for (i = 0; i < op->num_irqs; i++) {
 			int this_irq = op->irqs[i];
 			int sbusl = pil_to_sbus[this_irq];
@@ -617,6 +644,7 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
 		}
 	}
 
+build_resources:
 	build_device_resources(op, parent);
 
 	op->dev.parent = parent;
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c
index 4b06dcb00eb..4ca9e5fc97f 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom.c
@@ -444,6 +444,7 @@ static struct property * __init build_one_prop(phandle node, char *prev, char *s
 	static struct property *tmp = NULL;
 	struct property *p;
 	int len;
+	const char *name;
 
 	if (tmp) {
 		p = tmp;
@@ -456,19 +457,21 @@ static struct property * __init build_one_prop(phandle node, char *prev, char *s
 
 	p->name = (char *) (p + 1);
 	if (special_name) {
+		strcpy(p->name, special_name);
 		p->length = special_len;
 		p->value = prom_early_alloc(special_len);
 		memcpy(p->value, special_val, special_len);
 	} else {
 		if (prev == NULL) {
-			prom_firstprop(node, p->name);
+			name = prom_firstprop(node, NULL);
 		} else {
-			prom_nextprop(node, prev, p->name);
+			name = prom_nextprop(node, prev, NULL);
 		}
-		if (strlen(p->name) == 0) {
+		if (strlen(name) == 0) {
 			tmp = p;
 			return NULL;
 		}
+		strcpy(p->name, name);
 		p->length = prom_getproplen(node, p->name);
 		if (p->length <= 0) {
 			p->length = 0;
diff --git a/arch/sparc/kernel/smp.c b/arch/sparc/kernel/smp.c
index 6135d4faeee..e311ade1b49 100644
--- a/arch/sparc/kernel/smp.c
+++ b/arch/sparc/kernel/smp.c
@@ -87,6 +87,7 @@ void __cpuinit smp_store_cpu_info(int id)
 void __init smp_cpus_done(unsigned int max_cpus)
 {
 	extern void smp4m_smp_done(void);
+	extern void smp4d_smp_done(void);
 	unsigned long bogosum = 0;
 	int cpu, num;
 
@@ -100,8 +101,34 @@ void __init smp_cpus_done(unsigned int max_cpus)
 		num, bogosum/(500000/HZ),
 		(bogosum/(5000/HZ))%100);
 
-	BUG_ON(sparc_cpu_model != sun4m);
-	smp4m_smp_done();
+	switch(sparc_cpu_model) {
+	case sun4:
+		printk("SUN4\n");
+		BUG();
+		break;
+	case sun4c:
+		printk("SUN4C\n");
+		BUG();
+		break;
+	case sun4m:
+		smp4m_smp_done();
+		break;
+	case sun4d:
+		smp4d_smp_done();
+		break;
+	case sun4e:
+		printk("SUN4E\n");
+		BUG();
+		break;
+	case sun4u:
+		printk("SUN4U\n");
+		BUG();
+		break;
+	default:
+		printk("UNKNOWN!\n");
+		BUG();
+		break;
+	};
 }
 
 void cpu_panic(void)
@@ -267,9 +294,9 @@ int setup_profiling_timer(unsigned int multiplier)
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	extern void smp4m_boot_cpus(void);
+	extern void smp4d_boot_cpus(void);
 	int i, cpuid, extra;
 
-	BUG_ON(sparc_cpu_model != sun4m);
 	printk("Entering SMP Mode...\n");
 
 	extra = 0;
@@ -283,7 +310,34 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 
 	smp_store_cpu_info(boot_cpu_id);
 
-	smp4m_boot_cpus();
+	switch(sparc_cpu_model) {
+	case sun4:
+		printk("SUN4\n");
+		BUG();
+		break;
+	case sun4c:
+		printk("SUN4C\n");
+		BUG();
+		break;
+	case sun4m:
+		smp4m_boot_cpus();
+		break;
+	case sun4d:
+		smp4d_boot_cpus();
+		break;
+	case sun4e:
+		printk("SUN4E\n");
+		BUG();
+		break;
+	case sun4u:
+		printk("SUN4U\n");
+		BUG();
+		break;
+	default:
+		printk("UNKNOWN!\n");
+		BUG();
+		break;
+	};
 }
 
 /* Set this up early so that things like the scheduler can init
@@ -323,9 +377,37 @@ void __init smp_prepare_boot_cpu(void)
 int __cpuinit __cpu_up(unsigned int cpu)
 {
 	extern int smp4m_boot_one_cpu(int);
-	int ret;
-
-	ret = smp4m_boot_one_cpu(cpu);
+	extern int smp4d_boot_one_cpu(int);
+	int ret=0;
+
+	switch(sparc_cpu_model) {
+	case sun4:
+		printk("SUN4\n");
+		BUG();
+		break;
+	case sun4c:
+		printk("SUN4C\n");
+		BUG();
+		break;
+	case sun4m:
+		ret = smp4m_boot_one_cpu(cpu);
+		break;
+	case sun4d:
+		ret = smp4d_boot_one_cpu(cpu);
+		break;
+	case sun4e:
+		printk("SUN4E\n");
+		BUG();
+		break;
+	case sun4u:
+		printk("SUN4U\n");
+		BUG();
+		break;
+	default:
+		printk("UNKNOWN!\n");
+		BUG();
+		break;
+	};
 
 	if (!ret) {
 		cpu_set(cpu, smp_commenced_mask);
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 5fb987fc3d6..4d441a554d3 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -237,7 +237,6 @@ EXPORT_SYMBOL(prom_node_has_property);
 EXPORT_SYMBOL(prom_setprop);
 EXPORT_SYMBOL(saved_command_line);
 EXPORT_SYMBOL(prom_apply_obio_ranges);
-EXPORT_SYMBOL(prom_getname);
 EXPORT_SYMBOL(prom_feval);
 EXPORT_SYMBOL(prom_getbool);
 EXPORT_SYMBOL(prom_getstring);
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index b141b7ee671..ba843f6a283 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -43,15 +43,10 @@ extern ctxd_t *srmmu_ctx_table_phys;
 extern void calibrate_delay(void);
 
 extern volatile int smp_processors_ready;
-extern int smp_num_cpus;
 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;
diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c
index 0cdfc9d294b..a41c8a5c200 100644
--- a/arch/sparc/kernel/sys_sparc.c
+++ b/arch/sparc/kernel/sys_sparc.c
@@ -465,21 +465,21 @@ sys_rt_sigaction(int sig,
 
 asmlinkage int sys_getdomainname(char __user *name, int len)
 {
- 	int nlen;
- 	int err = -EFAULT;
+ 	int nlen, err;
  	
+	if (len < 0 || len > __NEW_UTS_LEN)
+		return -EINVAL;
+
  	down_read(&uts_sem);
  	
 	nlen = strlen(system_utsname.domainname) + 1;
-
 	if (nlen < len)
 		len = nlen;
-	if (len > __NEW_UTS_LEN)
-		goto done;
-	if (copy_to_user(name, system_utsname.domainname, len))
-		goto done;
-	err = 0;
-done:
+
+	err = -EFAULT;
+	if (!copy_to_user(name, system_utsname.domainname, len))
+		err = 0;
+
 	up_read(&uts_sem);
 	return err;
 }
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 04eb1eab6e3..845081b0126 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -225,6 +225,32 @@ static __inline__ int has_low_battery(void)
 	return (data1 == data2);	/* Was the write blocked? */
 }
 
+static void __init mostek_set_system_time(void)
+{
+	unsigned int year, mon, day, hour, min, sec;
+	struct mostek48t02 *mregs;
+
+	mregs = (struct mostek48t02 *)mstk48t02_regs;
+	if(!mregs) {
+		prom_printf("Something wrong, clock regs not mapped yet.\n");
+		prom_halt();
+	}		
+	spin_lock_irq(&mostek_lock);
+	mregs->creg |= MSTK_CREG_READ;
+	sec = MSTK_REG_SEC(mregs);
+	min = MSTK_REG_MIN(mregs);
+	hour = MSTK_REG_HOUR(mregs);
+	day = MSTK_REG_DOM(mregs);
+	mon = MSTK_REG_MONTH(mregs);
+	year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) );
+	xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
+	xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
+        set_normalized_timespec(&wall_to_monotonic,
+                                -xtime.tv_sec, -xtime.tv_nsec);
+	mregs->creg &= ~MSTK_CREG_READ;
+	spin_unlock_irq(&mostek_lock);
+}
+
 /* Probe for the real time clock chip on Sun4 */
 static __inline__ void sun4_clock_probe(void)
 {
@@ -273,6 +299,7 @@ static __inline__ void sun4_clock_probe(void)
 #endif
 }
 
+#ifndef CONFIG_SUN4
 static int __devinit clock_probe(struct of_device *op, const struct of_device_id *match)
 {
 	struct device_node *dp = op->node;
@@ -307,6 +334,8 @@ static int __devinit clock_probe(struct of_device *op, const struct of_device_id
 	if (mostek_read(mstk48t02_regs + MOSTEK_SEC) & MSTK_STOP)
 		kick_start_clock();
 
+	mostek_set_system_time();
+
 	return 0;
 }
 
@@ -325,56 +354,37 @@ static struct of_platform_driver clock_driver = {
 
 
 /* Probe for the mostek real time clock chip. */
-static void clock_init(void)
+static int __init clock_init(void)
 {
-	of_register_driver(&clock_driver, &of_bus_type);
+	return of_register_driver(&clock_driver, &of_bus_type);
 }
 
+/* Must be after subsys_initcall() so that busses are probed.  Must
+ * be before device_initcall() because things like the RTC driver
+ * need to see the clock registers.
+ */
+fs_initcall(clock_init);
+#endif /* !CONFIG_SUN4 */
+
 void __init sbus_time_init(void)
 {
-	unsigned int year, mon, day, hour, min, sec;
-	struct mostek48t02 *mregs;
-
-#ifdef CONFIG_SUN4
-	int temp;
-	struct intersil *iregs;
-#endif
 
 	BTFIXUPSET_CALL(bus_do_settimeofday, sbus_do_settimeofday, BTFIXUPCALL_NORM);
 	btfixup();
 
 	if (ARCH_SUN4)
 		sun4_clock_probe();
-	else
-		clock_init();
 
 	sparc_init_timers(timer_interrupt);
 	
 #ifdef CONFIG_SUN4
 	if(idprom->id_machtype == (SM_SUN4 | SM_4_330)) {
-#endif
-	mregs = (struct mostek48t02 *)mstk48t02_regs;
-	if(!mregs) {
-		prom_printf("Something wrong, clock regs not mapped yet.\n");
-		prom_halt();
-	}		
-	spin_lock_irq(&mostek_lock);
-	mregs->creg |= MSTK_CREG_READ;
-	sec = MSTK_REG_SEC(mregs);
-	min = MSTK_REG_MIN(mregs);
-	hour = MSTK_REG_HOUR(mregs);
-	day = MSTK_REG_DOM(mregs);
-	mon = MSTK_REG_MONTH(mregs);
-	year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) );
-	xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
-	xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
-        set_normalized_timespec(&wall_to_monotonic,
-                                -xtime.tv_sec, -xtime.tv_nsec);
-	mregs->creg &= ~MSTK_CREG_READ;
-	spin_unlock_irq(&mostek_lock);
-#ifdef CONFIG_SUN4
+		mostek_set_system_time();
 	} else if(idprom->id_machtype == (SM_SUN4 | SM_4_260) ) {
 		/* initialise the intersil on sun4 */
+		unsigned int year, mon, day, hour, min, sec;
+		int temp;
+		struct intersil *iregs;
 
 		iregs=intersil_clock;
 		if(!iregs) {