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powerpc/85xx: Replace epapr spin table macros/defines with a struct

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Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Zhao Chenhui 2012-07-20 20:42:33 +08:00 committed by Kumar Gala
parent 03bcb7e35f
commit 15f34eb123
1 changed files with 23 additions and 23 deletions
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46
arch/powerpc/platforms/85xx/smp.c
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@ -2,7 +2,7 @@
* Author: Andy Fleming <afleming@freescale.com>
* Kumar Gala <galak@kernel.crashing.org>
*
* Copyright 2006-2008, 2011 Freescale Semiconductor Inc.
* Copyright 2006-2008, 2011-2012 Freescale Semiconductor Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/kexec.h>
#include <linux/highmem.h>
#include <linux/cpu.h>
#include <asm/machdep.h>
#include <asm/pgtable.h>
@ -31,23 +32,21 @@
extern void __early_start(void);
#define BOOT_ENTRY_ADDR_UPPER 0
#define BOOT_ENTRY_ADDR_LOWER 1
#define BOOT_ENTRY_R3_UPPER 2
#define BOOT_ENTRY_R3_LOWER 3
#define BOOT_ENTRY_RESV 4
#define BOOT_ENTRY_PIR 5
#define BOOT_ENTRY_R6_UPPER 6
#define BOOT_ENTRY_R6_LOWER 7
#define NUM_BOOT_ENTRY 8
#define SIZE_BOOT_ENTRY (NUM_BOOT_ENTRY * sizeof(u32))
struct epapr_spin_table {
u32 addr_h;
u32 addr_l;
u32 r3_h;
u32 r3_l;
u32 reserved;
u32 pir;
};
static int __init
smp_85xx_kick_cpu(int nr)
{
unsigned long flags;
const u64 *cpu_rel_addr;
__iomem u32 *bptr_vaddr;
__iomem struct epapr_spin_table *spin_table;
struct device_node *np;
int n = 0, hw_cpu = get_hard_smp_processor_id(nr);
int ioremappable;
@ -75,19 +74,20 @@ smp_85xx_kick_cpu(int nr)
/* Map the spin table */
if (ioremappable)
bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
spin_table = ioremap(*cpu_rel_addr,
sizeof(struct epapr_spin_table));
else
bptr_vaddr = phys_to_virt(*cpu_rel_addr);
spin_table = phys_to_virt(*cpu_rel_addr);
local_irq_save(flags);
out_be32(bptr_vaddr + BOOT_ENTRY_PIR, hw_cpu);
out_be32(&spin_table->pir, hw_cpu);
#ifdef CONFIG_PPC32
out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
out_be32(&spin_table->addr_l, __pa(__early_start));
if (!ioremappable)
flush_dcache_range((ulong)bptr_vaddr,
(ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
flush_dcache_range((ulong)spin_table,
(ulong)spin_table + sizeof(struct epapr_spin_table));
/* Wait a bit for the CPU to ack. */
while ((__secondary_hold_acknowledge != hw_cpu) && (++n < 1000))
@ -95,18 +95,18 @@ smp_85xx_kick_cpu(int nr)
#else
smp_generic_kick_cpu(nr);
out_be64((u64 *)(bptr_vaddr + BOOT_ENTRY_ADDR_UPPER),
__pa((u64)*((unsigned long long *) generic_secondary_smp_init)));
out_be64((u64 *)(&spin_table->addr_h),
__pa((u64)*((unsigned long long *)generic_secondary_smp_init)));
if (!ioremappable)
flush_dcache_range((ulong)bptr_vaddr,
(ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
flush_dcache_range((ulong)spin_table,
(ulong)spin_table + sizeof(struct epapr_spin_table));
#endif
local_irq_restore(flags);
if (ioremappable)
iounmap(bptr_vaddr);
iounmap(spin_table);
pr_debug("waited %d msecs for CPU #%d.\n", n, nr);