arch/powerpc/platforms/pseries/xics.h

   1 /*
   2  * arch/powerpc/platforms/pseries/xics.h
   3  *
   4  * Copyright 2000 IBM Corporation.
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License
   8  *  as published by the Free Software Foundation; either version
   9  *  2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _POWERPC_KERNEL_XICS_H
  13 #define _POWERPC_KERNEL_XICS_H
  14
  15 #include <linux/cache.h>
  16
  17 extern void xics_init_IRQ(void);
  18 extern void xics_setup_cpu(void);
  19 extern void xics_teardown_cpu(int secondary);
  20 extern void xics_cause_IPI(int cpu);
  21 extern  void xics_request_IPIs(void);
  22 extern void xics_migrate_irqs_away(void);
  23
  24 /* first argument is ignored for now*/
  25 void pSeriesLP_cppr_info(int n_cpu, u8 value);
  26
  27 struct xics_ipi_struct {
  28         volatile unsigned long value;
  29 } ____cacheline_aligned;
  30
  31 extern struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
  32
  33 struct irq_desc;
  34 extern void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc);
  35
  36 #endif /* _POWERPC_KERNEL_XICS_H */