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

Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index ff42490..4827709 100644 (file)
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -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);