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