linux/arch/powerpc/include/asm/ehv_pic.h
Ashish Kalra 3a93261f70 powerpc: introduce the ePAPR embedded hypervisor vmpic driver
The Freescale ePAPR reference hypervisor provides interrupt controller
services via a hypercall interface, instead of emulating the MPIC
controller.  This is called the VMPIC.

The ePAPR "virtual interrupt controller" provides interrupt controller
services for external interrupts.  External interrupts received by a
partition can come from two sources:

  - Hardware interrupts - hardware interrupts come from external
    interrupt lines or on-chip I/O devices.
  - Virtual interrupts - virtual interrupts are generated by the hypervisor
    as part of some hypervisor service or hypervisor-created virtual device.

Both types of interrupts are processed using the same programming model and
same set of hypercalls.

Signed-off-by: Ashish Kalra <ashish.kalra@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-06-27 08:30:26 -05:00

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C

/*
* EHV_PIC private definitions and structure.
*
* Copyright 2008-2010 Freescale Semiconductor, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#ifndef __EHV_PIC_H__
#define __EHV_PIC_H__
#include <linux/irq.h>
#define NR_EHV_PIC_INTS 1024
#define EHV_PIC_INFO(name) EHV_PIC_##name
#define EHV_PIC_VECPRI_POLARITY_NEGATIVE 0
#define EHV_PIC_VECPRI_POLARITY_POSITIVE 1
#define EHV_PIC_VECPRI_SENSE_EDGE 0
#define EHV_PIC_VECPRI_SENSE_LEVEL 0x2
#define EHV_PIC_VECPRI_POLARITY_MASK 0x1
#define EHV_PIC_VECPRI_SENSE_MASK 0x2
struct ehv_pic {
/* The remapper for this EHV_PIC */
struct irq_host *irqhost;
/* The "linux" controller struct */
struct irq_chip hc_irq;
/* core int flag */
int coreint_flag;
};
void ehv_pic_init(void);
unsigned int ehv_pic_get_irq(void);
#endif /* __EHV_PIC_H__ */