mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 17:24:17 +08:00
3a93261f70
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>
41 lines
961 B
C
41 lines
961 B
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__ */
|