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/******************************************************************************
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_PARAVIRT_H
#define __ASM_PARAVIRT_H
#ifdef CONFIG_PARAVIRT_GUEST
#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
#define PARAVIRT_HYPERVISOR_TYPE_XEN 1
#ifndef __ASSEMBLY__
#include <asm/hw_irq.h>
#include <asm/meminit.h>
/******************************************************************************
* general info
*/
struct pv_info {
unsigned int kernel_rpl;
int paravirt_enabled;
const char *name;
};
extern struct pv_info pv_info;
static inline int paravirt_enabled(void)
{
return pv_info.paravirt_enabled;
}
static inline unsigned int get_kernel_rpl(void)
{
return pv_info.kernel_rpl;
}
/******************************************************************************
* initialization hooks.
*/
struct rsvd_region;
struct pv_init_ops {
void (*banner)(void);
int (*reserve_memory)(struct rsvd_region *region);
void (*arch_setup_early)(void);
void (*arch_setup_console)(char **cmdline_p);
int (*arch_setup_nomca)(void);
void (*post_smp_prepare_boot_cpu)(void);
};
extern struct pv_init_ops pv_init_ops;
static inline void paravirt_banner(void)
{
if (pv_init_ops.banner)
pv_init_ops.banner();
}
static inline int paravirt_reserve_memory(struct rsvd_region *region)
{
if (pv_init_ops.reserve_memory)
return pv_init_ops.reserve_memory(region);
return 0;
}
static inline void paravirt_arch_setup_early(void)
{
if (pv_init_ops.arch_setup_early)
pv_init_ops.arch_setup_early();
}
static inline void paravirt_arch_setup_console(char **cmdline_p)
{
if (pv_init_ops.arch_setup_console)
pv_init_ops.arch_setup_console(cmdline_p);
}
static inline int paravirt_arch_setup_nomca(void)
{
if (pv_init_ops.arch_setup_nomca)
return pv_init_ops.arch_setup_nomca();
return 0;
}
static inline void paravirt_post_smp_prepare_boot_cpu(void)
{
if (pv_init_ops.post_smp_prepare_boot_cpu)
pv_init_ops.post_smp_prepare_boot_cpu();
}
/******************************************************************************
* replacement of iosapic operations.
*/
struct pv_iosapic_ops {
void (*pcat_compat_init)(void);
struct irq_chip *(*get_irq_chip)(unsigned long trigger);
unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
};
extern struct pv_iosapic_ops pv_iosapic_ops;
static inline void
iosapic_pcat_compat_init(void)
{
if (pv_iosapic_ops.pcat_compat_init)
pv_iosapic_ops.pcat_compat_init();
}
static inline struct irq_chip*
iosapic_get_irq_chip(unsigned long trigger)
{
return pv_iosapic_ops.get_irq_chip(trigger);
}
static inline unsigned int
__iosapic_read(char __iomem *iosapic, unsigned int reg)
{
return pv_iosapic_ops.__read(iosapic, reg);
}
static inline void
__iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
{
return pv_iosapic_ops.__write(iosapic, reg, val);
}
/******************************************************************************
* replacement of irq operations.
*/
struct pv_irq_ops {
void (*register_ipi)(void);
int (*assign_irq_vector)(int irq);
void (*free_irq_vector)(int vector);
void (*register_percpu_irq)(ia64_vector vec,
struct irqaction *action);
void (*resend_irq)(unsigned int vector);
};
extern struct pv_irq_ops pv_irq_ops;
static inline void
ia64_register_ipi(void)
{
pv_irq_ops.register_ipi();
}
static inline int
assign_irq_vector(int irq)
{
return pv_irq_ops.assign_irq_vector(irq);
}
static inline void
free_irq_vector(int vector)
{
return pv_irq_ops.free_irq_vector(vector);
}
static inline void
register_percpu_irq(ia64_vector vec, struct irqaction *action)
{
pv_irq_ops.register_percpu_irq(vec, action);
}
static inline void
ia64_resend_irq(unsigned int vector)
{
pv_irq_ops.resend_irq(vector);
}
/******************************************************************************
* replacement of time operations.
*/
extern struct itc_jitter_data_t itc_jitter_data;
extern volatile int time_keeper_id;
struct pv_time_ops {
void (*init_missing_ticks_accounting)(int cpu);
int (*do_steal_accounting)(unsigned long *new_itm);
void (*clocksource_resume)(void);
};
extern struct pv_time_ops pv_time_ops;
static inline void
paravirt_init_missing_ticks_accounting(int cpu)
{
if (pv_time_ops.init_missing_ticks_accounting)
pv_time_ops.init_missing_ticks_accounting(cpu);
}
static inline int
paravirt_do_steal_accounting(unsigned long *new_itm)
{
return pv_time_ops.do_steal_accounting(new_itm);
}
#endif /* !__ASSEMBLY__ */
#else
/* fallback for native case */
#ifndef __ASSEMBLY__
#define paravirt_banner() do { } while (0)
#define paravirt_reserve_memory(region) 0
#define paravirt_arch_setup_early() do { } while (0)
#define paravirt_arch_setup_console(cmdline_p) do { } while (0)
#define paravirt_arch_setup_nomca() 0
#define paravirt_post_smp_prepare_boot_cpu() do { } while (0)
#define paravirt_init_missing_ticks_accounting(cpu) do { } while (0)
#define paravirt_do_steal_accounting(new_itm) 0
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_PARAVIRT_GUEST */
#endif /* __ASM_PARAVIRT_H */
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