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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/85xx: Fix SMP when "cpu-release-addr" is in lowmem
  powerpc/85xx: Fix oops during MSI driver probe on MPC85xxMDS boards
This commit is contained in:
Linus Torvalds 2010-02-18 08:07:54 -08:00
commit ab320af224
2 changed files with 21 additions and 3 deletions
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3
arch/powerpc/platforms/85xx/mpc85xx_mds.c
View File

@ -338,7 +338,8 @@ static void __init mpc85xx_mds_pic_init(void)
}
mpic = mpic_alloc(np, r.start,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
MPIC_BROKEN_FRR_NIRQS,
0, 256, " OpenPIC ");
BUG_ON(mpic == NULL);
of_node_put(np);

21
arch/powerpc/platforms/85xx/smp.c
View File

@ -46,6 +46,7 @@ smp_85xx_kick_cpu(int nr)
__iomem u32 *bptr_vaddr;
struct device_node *np;
int n = 0;
int ioremappable;
WARN_ON (nr < 0 || nr >= NR_CPUS);
@ -59,21 +60,37 @@ smp_85xx_kick_cpu(int nr)
return;
}
/*
* A secondary core could be in a spinloop in the bootpage
* (0xfffff000), somewhere in highmem, or somewhere in lowmem.
* The bootpage and highmem can be accessed via ioremap(), but
* we need to directly access the spinloop if its in lowmem.
*/
ioremappable = *cpu_rel_addr > virt_to_phys(high_memory);
/* Map the spin table */
bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
if (ioremappable)
bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
else
bptr_vaddr = phys_to_virt(*cpu_rel_addr);
local_irq_save(flags);
out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr);
out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
if (!ioremappable)
flush_dcache_range((ulong)bptr_vaddr,
(ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
/* Wait a bit for the CPU to ack. */
while ((__secondary_hold_acknowledge != nr) && (++n < 1000))
mdelay(1);
local_irq_restore(flags);
iounmap(bptr_vaddr);
if (ioremappable)
iounmap(bptr_vaddr);
pr_debug("waited %d msecs for CPU #%d.\n", n, nr);
}