diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2013-02-21 12:51:33 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-02-21 12:51:33 +0100 |
| commit | 8bfc245f9ad7bd4e461179e4e7852ef99b8b6144 (patch) | |
| tree | 0ad091f645fbc8318634599d278966a53d3922ee /arch/arm/common/gic.c | |
| parent | 612663a974065c3445e641d046769fe4c55a6438 (diff) | |
| parent | 535237cecab2b078114be712c67e89a0db61965f (diff) | |
Merge branch 'mips-next-3.9' of git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next
Diffstat (limited to 'arch/arm/common/gic.c')
| -rw-r--r-- | arch/arm/common/gic.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 36ae03a3f5d..87dfa9026c5 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -351,6 +351,25 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq) irq_set_chained_handler(irq, gic_handle_cascade_irq); } +static u8 gic_get_cpumask(struct gic_chip_data *gic) +{ + void __iomem *base = gic_data_dist_base(gic); + u32 mask, i; + + for (i = mask = 0; i < 32; i += 4) { + mask = readl_relaxed(base + GIC_DIST_TARGET + i); + mask |= mask >> 16; + mask |= mask >> 8; + if (mask) + break; + } + + if (!mask) + pr_crit("GIC CPU mask not found - kernel will fail to boot.\n"); + + return mask; +} + static void __init gic_dist_init(struct gic_chip_data *gic) { unsigned int i; @@ -369,7 +388,9 @@ static void __init gic_dist_init(struct gic_chip_data *gic) /* * Set all global interrupts to this CPU only. */ - cpumask = readl_relaxed(base + GIC_DIST_TARGET + 0); + cpumask = gic_get_cpumask(gic); + cpumask |= cpumask << 8; + cpumask |= cpumask << 16; for (i = 32; i < gic_irqs; i += 4) writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4); @@ -400,7 +421,7 @@ static void __cpuinit gic_cpu_init(struct gic_chip_data *gic) * Get what the GIC says our CPU mask is. */ BUG_ON(cpu >= NR_GIC_CPU_IF); - cpu_mask = readl_relaxed(dist_base + GIC_DIST_TARGET + 0); + cpu_mask = gic_get_cpumask(gic); gic_cpu_map[cpu] = cpu_mask; /* |