Merge to 2.1.38.

IMPORTANT NOTE:  I could not figure out what information is the
one that should be used for the following files (ie, those
that were in our tree, or those that came from Linus' patch),
please, check these:

include/asm-mips/jazz.h
include/asm-mips/jazzdma.h
include/asm-mips/ioctls.h

1 files changed, 82 insertions, 54 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 88d7a8ecf..77ccf40a0 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -3,6 +3,26 @@
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
  */
 
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/tasks.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+
+#include <asm/ptrace.h>
+#include <asm/atomic.h>
+
+#include <asm/delay.h>
+#include <asm/irq.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/oplib.h>
+#include <asm/spinlock.h>
+#include <asm/hardirq.h>
+#include <asm/softirq.h>
+
 #define __KERNEL_SYSCALLS__
 #include <linux/unistd.h>
 
@@ -13,8 +33,9 @@ volatile int smp_processors_ready = 0;
 unsigned long cpu_present_map = 0;
 int smp_num_cpus = 1;
 int smp_threads_ready = 0;
+volatile unsigned long cpu_callin_map[NR_CPUS] = {0,};
 
-struct cpuinfo_sparc64 cpu_data[NR_CPUS];
+struct cpuinfo_sparc cpu_data[NR_CPUS];
 static unsigned char boot_cpu_id = 0;
 static int smp_activated = 0;
 
@@ -52,11 +73,11 @@ void smp_store_cpu_info(int id)
 
 void smp_commence(void)
 {
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	flush_cache_all();
+	flush_tlb_all();
 	smp_commenced = 1;
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	flush_cache_all();
+	flush_tlb_all();
 }
 
 static void smp_setup_percpu_timer(void);
@@ -67,8 +88,8 @@ void smp_callin(void)
 {
 	int cpuid = hard_smp_processor_id();
 
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	flush_cache_all();
+	flush_tlb_all();
 
 	smp_setup_percpu_timer();
 
@@ -76,7 +97,7 @@ void smp_callin(void)
 	smp_store_cpu_info(cpuid);
 	callin_flag = 1;
 	__asm__ __volatile__("membar #Sync\n\t"
-			     "flush  %g6" : : : "memory");
+			     "flush  %%g6" : : : "memory");
 
 	while(!task[cpuid])
 		barrier();
@@ -103,11 +124,18 @@ int start_secondary(void *unused)
 	return cpu_idle(NULL);
 }
 
+void cpu_panic(void)
+{
+	printk("CPU[%d]: Returns from cpu_idle!\n", smp_processor_id());
+	panic("SMP bolixed\n");
+}
+
 extern struct prom_cpuinfo linux_cpus[NR_CPUS];
+extern unsigned long sparc64_cpu_startup;
 
 void smp_boot_cpus(void)
 {
-	int cpucount = 0, i, first, prev;
+	int cpucount = 0, i;
 
 	printk("Entering UltraSMPenguin Mode...\n");
 	__sti();
@@ -133,15 +161,15 @@ void smp_boot_cpus(void)
 			continue;
 
 		if(cpu_present_map & (1 << i)) {
-			extern unsigned long sparc64_cpu_startup;
-			unsigned long entry = (unsigned long)&sparc_cpu_startup;
 			struct task_struct *p;
 			int timeout;
 
 			kernel_thread(start_secondary, NULL, CLONE_PID);
 			p = task[++cpucount];
 			p->processor = i;
-			prom_startcpu(linux_cpus[i].prom_node, entry, i);
+			prom_startcpu(linux_cpus[i].prom_node,
+				      ((unsigned long)&sparc64_cpu_startup),
+				      ((unsigned long)p));
 			for(timeout = 0; timeout < 5000000; timeout++) {
 				if(cpu_callin_map[i])
 					break;
@@ -190,49 +218,46 @@ void smp_message_pass(int target, int msg, unsigned long data, int wait)
 		barrier();
 }
 
-/* XXX Make it fast later. */
+static inline void xcall_deliver(u64 data0, u64 data1, u64 data2, u64 pstate, int cpu)
+{
+	u64 result, target = (cpu_number_map[cpu] << 14) | 0x70;
+
+	__asm__ __volatile__("
+	wrpr	%0, %1, %%pstate
+	wr	%%g0, %2, %%asi
+	stxa	%3, [0x40] %%asi
+	stxa	%4, [0x50] %%asi
+	stxa	%5, [0x60] %%asi
+	stxa	%%g0, [%6] %%asi
+	membar	#Sync"
+	: /* No outputs */
+	: "r" (pstate), "i" (PSTATE_IE), "i" (ASI_UDB_INTR_W),
+	  "r" (data0), "r" (data1), "r" (data2), "r" (target));
+
+	/* NOTE: PSTATE_IE is still clear. */
+	do {
+		__asm__ __volatile__("ldxa [%%g0] %1, %0"
+			: "=r" (result)
+			: "i" (ASI_INTR_DISPATCH_STAT));
+	} while(result & 0x1);
+	__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
+			     : : "r" (pstate));
+	if(result & 0x2)
+		panic("Penguin NACK's master!");
+}
+
 void smp_cross_call(unsigned long *func, u32 ctx, u64 data1, u64 data2)
 {
 	if(smp_processors_ready) {
-		unsigned long mask;
-		u64 data0 = (((unsigned long)ctx)<<32 |
-			     (((unsigned long)func) & 0xffffffff));
-		u64 pstate;
+		unsigned long mask = (cpu_present_map & ~(1<<smp_processor_id()));
+		u64 pstate, data0 = (((u64)ctx)<<32 | (((u64)func) & 0xffffffff));
 		int i, ncpus = smp_num_cpus;
 
 		__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
-		mask = (cpu_present_map & ~(1 << smp_processor_id()));
 		for(i = 0; i < ncpus; i++) {
-			if(mask & (1 << i)) {
-				u64 target = mid<<14 | 0x70;
-				u64 result;
-
-				__asm__ __volatile__("
-				wrpr	%0, %1, %%pstate
-				wrpr	%%g0, %2, %%asi
-				stxa	%3, [0x40] %%asi
-				stxa	%4, [0x50] %%asi
-				stxa	%5, [0x60] %%asi
-				stxa	%%g0, [%6] %7
-				membar	#Sync"
-				: /* No outputs */
-				: "r" (pstate), "i" (PSTATE_IE), "i" (ASI_UDB_INTR_W),
-				  "r" (data0), "r" (data1), "r" (data2),
-				  "r" (target), "i" (ASI_UDB_INTR_W));
-
-				/* NOTE: PSTATE_IE is still clear. */
-				do {
-					__asm__ __volatile__("ldxa [%%g0] %1, %0",
-						: "=r" (result)
-						: "i" (ASI_INTR_DISPATCH_STAT));
-				} while(result & 0x1);
-				__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
-						     : : "r" (pstate));
-				if(result & 0x2)
-					panic("Penguin NACK's master!");
-			}
+			if(mask & (1 << i))
+				xcall_deliver(data0, data1, data2, pstate, i);
 		}
-
 		/* NOTE: Caller runs local copy on master. */
 	}
 }
@@ -246,17 +271,19 @@ extern unsigned long xcall_flush_cache_all;
 void smp_flush_cache_all(void)
 {
 	smp_cross_call(&xcall_flush_cache_all, 0, 0, 0);
+	__flush_cache_all();
 }
 
 void smp_flush_tlb_all(void)
 {
 	smp_cross_call(&xcall_flush_tlb_all, 0, 0, 0);
+	__flush_tlb_all();
 }
 
 void smp_flush_tlb_mm(struct mm_struct *mm)
 {
 	u32 ctx = mm->context & 0x1fff;
-	if(mm->cpu_vm_mask != (1 << smp_processor_id()))
+	if(mm->cpu_vm_mask != (1UL << smp_processor_id()))
 		smp_cross_call(&xcall_flush_tlb_mm, ctx, 0, 0);
 	__flush_tlb_mm(ctx);
 }
@@ -265,7 +292,7 @@ void smp_flush_tlb_range(struct mm_struct *mm, unsigned long start,
 			 unsigned long end)
 {
 	u32 ctx = mm->context & 0x1fff;
-	if(mm->cpu_vm_mask != (1 << smp_processor_id()))
+	if(mm->cpu_vm_mask != (1UL << smp_processor_id()))
 		smp_cross_call(&xcall_flush_tlb_range, ctx, start, end);
 	__flush_tlb_range(ctx, start, end);
 }
@@ -275,7 +302,7 @@ void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 	struct mm_struct *mm = vma->vm_mm;
 	u32 ctx = mm->context & 0x1fff;
 
-	if(mm->cpu_vm_mask != (1 << smp_processor_id()))
+	if(mm->cpu_vm_mask != (1UL << smp_processor_id()))
 		smp_cross_call(&xcall_flush_tlb_page, ctx, page, 0);
 	__flush_tlb_page(ctx, page);
 }
@@ -308,12 +335,12 @@ extern void update_one_process(struct task_struct *p, unsigned long ticks,
 void smp_percpu_timer_interrupt(struct pt_regs *regs)
 {
 	int cpu = smp_processor_id();
+	int user = user_mode(regs);
 
-	clear_profile_irq(cpu);
-	if(!user_mode(regs))
-		sparc_do_profile(regs->pc);
+	/* XXX clear_profile_irq(cpu); */
+	if(!user)
+		sparc64_do_profile(regs->tpc);
 	if(!--prof_counter[cpu]) {
-		int user = user_mode(regs);
 		if(current->pid) {
 			update_one_process(current, 1, user, !user);
 			if(--current->counter < 0) {
@@ -344,4 +371,5 @@ static void smp_setup_percpu_timer(void)
 int setup_profiling_timer(unsigned int multiplier)
 {
 	/* XXX implement me */
+	return 0;
 }