release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-s5pv310/include/mach/smp.h

   1 /* linux/arch/arm/mach-s5pv310/include/mach/smp.h
   2  *
   3  * Cloned from arch/arm/mach-realview/include/mach/smp.h
   4 */
   5
   6 #ifndef ASM_ARCH_SMP_H
   7 #define ASM_ARCH_SMP_H __FILE__
   8
   9 #include <asm/hardware/gic.h>
  10
  11 extern void __iomem *gic_cpu_base_addr;
  12
  13 #define hard_smp_processor_id()                 \
  14         ({                                              \
  15                 unsigned int cpunum;                    \
  16                 __asm__("mrc p15, 0, %0, c0, c0, 5"     \
  17                         : "=r" (cpunum));               \
  18                 cpunum &= 0x03;                         \
  19         })
  20
  21 /*
  22  * We use IRQ1 as the IPI
  23  */
  24 static inline void smp_cross_call(const struct cpumask *mask)
  25 {
  26         gic_raise_softirq(mask, 1);
  27 }
  28
  29 #endif