powerpc: Remove arch/ppc and include/asm-ppc

All the maintained platforms are now in arch/powerpc, so the old
arch/ppc stuff can now go away.

Acked-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 414 deletions

diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c
deleted file mode 100644
index 055998575cb..00000000000
--- a/arch/ppc/kernel/smp.c
+++ /dev/null
@@ -1,414 +0,0 @@
-/*
- * Smp support for ppc.
- *
- * Written by Cort Dougan (cort@cs.nmt.edu) borrowing a great
- * deal of code from the sparc and intel versions.
- *
- * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/cache.h>
-
-#include <asm/ptrace.h>
-#include <asm/atomic.h>
-#include <asm/irq.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/smp.h>
-#include <asm/residual.h>
-#include <asm/time.h>
-#include <asm/thread_info.h>
-#include <asm/tlbflush.h>
-#include <asm/xmon.h>
-#include <asm/machdep.h>
-
-volatile int smp_commenced;
-int smp_tb_synchronized;
-struct cpuinfo_PPC cpu_data[NR_CPUS];
-atomic_t ipi_recv;
-atomic_t ipi_sent;
-cpumask_t cpu_online_map;
-cpumask_t cpu_possible_map;
-int smp_hw_index[NR_CPUS];
-struct thread_info *secondary_ti;
-static struct task_struct *idle_tasks[NR_CPUS];
-
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_possible_map);
-
-/* SMP operations for this machine */
-struct smp_ops_t *smp_ops;
-
-/* all cpu mappings are 1-1 -- Cort */
-volatile unsigned long cpu_callin_map[NR_CPUS];
-
-int start_secondary(void *);
-void smp_call_function_interrupt(void);
-static int __smp_call_function(void (*func) (void *info), void *info,
-			       int wait, int target);
-
-/* Low level assembly function used to backup CPU 0 state */
-extern void __save_cpu_setup(void);
-
-/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
- *
- * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
- * in /proc/interrupts will be wrong!!! --Troy */
-#define PPC_MSG_CALL_FUNCTION	0
-#define PPC_MSG_RESCHEDULE	1
-#define PPC_MSG_INVALIDATE_TLB	2
-#define PPC_MSG_XMON_BREAK	3
-
-static inline void
-smp_message_pass(int target, int msg)
-{
-	if (smp_ops) {
-		atomic_inc(&ipi_sent);
-		smp_ops->message_pass(target, msg);
-	}
-}
-
-/*
- * Common functions
- */
-void smp_message_recv(int msg)
-{
-	atomic_inc(&ipi_recv);
-
-	switch( msg ) {
-	case PPC_MSG_CALL_FUNCTION:
-		smp_call_function_interrupt();
-		break;
-	case PPC_MSG_RESCHEDULE:
-		set_need_resched();
-		break;
-	case PPC_MSG_INVALIDATE_TLB:
-		_tlbia();
-		break;
-#ifdef CONFIG_XMON
-	case PPC_MSG_XMON_BREAK:
-		xmon(get_irq_regs());
-		break;
-#endif /* CONFIG_XMON */
-	default:
-		printk("SMP %d: smp_message_recv(): unknown msg %d\n",
-		       smp_processor_id(), msg);
-		break;
-	}
-}
-
-/*
- * 750's don't broadcast tlb invalidates so
- * we have to emulate that behavior.
- *   -- Cort
- */
-void smp_send_tlb_invalidate(int cpu)
-{
-	if ( PVR_VER(mfspr(SPRN_PVR)) == 8 )
-		smp_message_pass(MSG_ALL_BUT_SELF, PPC_MSG_INVALIDATE_TLB);
-}
-
-void smp_send_reschedule(int cpu)
-{
-	/*
-	 * This is only used if `cpu' is running an idle task,
-	 * so it will reschedule itself anyway...
-	 *
-	 * This isn't the case anymore since the other CPU could be
-	 * sleeping and won't reschedule until the next interrupt (such
-	 * as the timer).
-	 *  -- Cort
-	 */
-	/* This is only used if `cpu' is running an idle task,
-	   so it will reschedule itself anyway... */
-	smp_message_pass(cpu, PPC_MSG_RESCHEDULE);
-}
-
-#ifdef CONFIG_XMON
-void smp_send_xmon_break(int cpu)
-{
-	smp_message_pass(cpu, PPC_MSG_XMON_BREAK);
-}
-#endif /* CONFIG_XMON */
-
-static void stop_this_cpu(void *dummy)
-{
-	local_irq_disable();
-	while (1)
-		;
-}
-
-void smp_send_stop(void)
-{
-	smp_call_function(stop_this_cpu, NULL, 1, 0);
-}
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- * Stolen from the i386 version.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-static struct call_data_struct {
-	void (*func) (void *info);
-	void *info;
-	atomic_t started;
-	atomic_t finished;
-	int wait;
-} *call_data;
-
-/*
- * this function sends a 'generic call function' IPI to all other CPUs
- * in the system.
- */
-
-int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
-		      int wait)
-/*
- * [SUMMARY] Run a function on all other CPUs.
- * <func> The function to run. This must be fast and non-blocking.
- * <info> An arbitrary pointer to pass to the function.
- * <nonatomic> currently unused.
- * <wait> If true, wait (atomically) until function has completed on other CPUs.
- * [RETURNS] 0 on success, else a negative status code. Does not return until
- * remote CPUs are nearly ready to execute <<func>> or are or have executed.
- *
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- */
-{
-	/* FIXME: get cpu lock with hotplug cpus, or change this to
-           bitmask. --RR */
-	if (num_online_cpus() <= 1)
-		return 0;
-	/* Can deadlock when called with interrupts disabled */
-	WARN_ON(irqs_disabled());
-	return __smp_call_function(func, info, wait, MSG_ALL_BUT_SELF);
-}
-
-static int __smp_call_function(void (*func) (void *info), void *info,
-			       int wait, int target)
-{
-	struct call_data_struct data;
-	int ret = -1;
-	int timeout;
-	int ncpus = 1;
-
-	if (target == MSG_ALL_BUT_SELF)
-		ncpus = num_online_cpus() - 1;
-	else if (target == MSG_ALL)
-		ncpus = num_online_cpus();
-
-	data.func = func;
-	data.info = info;
-	atomic_set(&data.started, 0);
-	data.wait = wait;
-	if (wait)
-		atomic_set(&data.finished, 0);
-
-	spin_lock(&call_lock);
-	call_data = &data;
-	/* Send a message to all other CPUs and wait for them to respond */
-	smp_message_pass(target, PPC_MSG_CALL_FUNCTION);
-
-	/* Wait for response */
-	timeout = 1000000;
-	while (atomic_read(&data.started) != ncpus) {
-		if (--timeout == 0) {
-			printk("smp_call_function on cpu %d: other cpus not responding (%d)\n",
-			       smp_processor_id(), atomic_read(&data.started));
-			goto out;
-		}
-		barrier();
-		udelay(1);
-	}
-
-	if (wait) {
-		timeout = 1000000;
-		while (atomic_read(&data.finished) != ncpus) {
-			if (--timeout == 0) {
-				printk("smp_call_function on cpu %d: other cpus not finishing (%d/%d)\n",
-				       smp_processor_id(), atomic_read(&data.finished), atomic_read(&data.started));
-				goto out;
-			}
-			barrier();
-			udelay(1);
-		}
-	}
-	ret = 0;
-
- out:
-	spin_unlock(&call_lock);
-	return ret;
-}
-
-void smp_call_function_interrupt(void)
-{
-	void (*func) (void *info) = call_data->func;
-	void *info = call_data->info;
-	int wait = call_data->wait;
-
-	/*
-	 * Notify initiating CPU that I've grabbed the data and am
-	 * about to execute the function
-	 */
-	atomic_inc(&call_data->started);
-	/*
-	 * At this point the info structure may be out of scope unless wait==1
-	 */
-	(*func)(info);
-	if (wait)
-		atomic_inc(&call_data->finished);
-}
-
-static void __devinit smp_store_cpu_info(int id)
-{
-        struct cpuinfo_PPC *c = &cpu_data[id];
-
-	/* assume bogomips are same for everything */
-        c->loops_per_jiffy = loops_per_jiffy;
-        c->pvr = mfspr(SPRN_PVR);
-}
-
-void __init smp_prepare_cpus(unsigned int max_cpus)
-{
-	int num_cpus, i, cpu;
-	struct task_struct *p;
-
-	/* Fixup boot cpu */
-        smp_store_cpu_info(smp_processor_id());
-	cpu_callin_map[smp_processor_id()] = 1;
-
-	if (smp_ops == NULL) {
-		printk("SMP not supported on this machine.\n");
-		return;
-	}
-
-	/* Probe platform for CPUs: always linear. */
-	num_cpus = smp_ops->probe();
-	
-	if (num_cpus < 2)
-		smp_tb_synchronized = 1;
-	
-	for (i = 0; i < num_cpus; ++i)
-		cpu_set(i, cpu_possible_map);
-
-	/* Backup CPU 0 state */
-	__save_cpu_setup();
-
-	for_each_possible_cpu(cpu) {
-		if (cpu == smp_processor_id())
-			continue;
-		/* create a process for the processor */
-		p = fork_idle(cpu);
-		if (IS_ERR(p))
-			panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
-		task_thread_info(p)->cpu = cpu;
-		idle_tasks[cpu] = p;
-	}
-}
-
-void __devinit smp_prepare_boot_cpu(void)
-{
-	cpu_set(smp_processor_id(), cpu_online_map);
-	cpu_set(smp_processor_id(), cpu_possible_map);
-}
-
-int __init setup_profiling_timer(unsigned int multiplier)
-{
-	return 0;
-}
-
-/* Processor coming up starts here */
-int __devinit start_secondary(void *unused)
-{
-	int cpu;
-
-	atomic_inc(&init_mm.mm_count);
-	current->active_mm = &init_mm;
-
-	cpu = smp_processor_id();
-        smp_store_cpu_info(cpu);
-	set_dec(tb_ticks_per_jiffy);
-	preempt_disable();
-	cpu_callin_map[cpu] = 1;
-
-	printk("CPU %d done callin...\n", cpu);
-	smp_ops->setup_cpu(cpu);
-	printk("CPU %d done setup...\n", cpu);
-	smp_ops->take_timebase();
-	printk("CPU %d done timebase take...\n", cpu);
-
-	spin_lock(&call_lock);
-	cpu_set(cpu, cpu_online_map);
-	spin_unlock(&call_lock);
-
-	local_irq_enable();
-
-	cpu_idle();
-	return 0;
-}
-
-int __cpu_up(unsigned int cpu)
-{
-	char buf[32];
-	int c;
-
-	secondary_ti = task_thread_info(idle_tasks[cpu]);
-	mb();
-
-	/*
-	 * There was a cache flush loop here to flush the cache
-	 * to memory for the first 8MB of RAM.  The cache flush
-	 * has been pushed into the kick_cpu function for those
-	 * platforms that need it.
-	 */
-
-	/* wake up cpu */
-	smp_ops->kick_cpu(cpu);
-	
-	/*
-	 * wait to see if the cpu made a callin (is actually up).
-	 * use this value that I found through experimentation.
-	 * -- Cort
-	 */
-	for (c = 1000; c && !cpu_callin_map[cpu]; c--)
-		udelay(100);
-
-	if (!cpu_callin_map[cpu]) {
-		sprintf(buf, "didn't find cpu %u", cpu);
-		if (ppc_md.progress) ppc_md.progress(buf, 0x360+cpu);
-		printk("Processor %u is stuck.\n", cpu);
-		return -ENOENT;
-	}
-
-	sprintf(buf, "found cpu %u", cpu);
-	if (ppc_md.progress) ppc_md.progress(buf, 0x350+cpu);
-	printk("Processor %d found.\n", cpu);
-
-	smp_ops->give_timebase();
-
-	/* Wait until cpu puts itself in the online map */
-	while (!cpu_online(cpu))
-		cpu_relax();
-
-	return 0;
-}
-
-void smp_cpus_done(unsigned int max_cpus)
-{
-	smp_ops->setup_cpu(0);
-}