forked from luck/tmp_suning_uos_patched
e4ff5b8f54
paravirtualize gate page by allowing each pv_ops instances to define its own gate page. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
311 lines
7.2 KiB
C
311 lines
7.2 KiB
C
/******************************************************************************
|
|
* 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
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/******************************************************************************
|
|
* fsys related addresses
|
|
*/
|
|
struct pv_fsys_data {
|
|
unsigned long *fsyscall_table;
|
|
void *fsys_bubble_down;
|
|
};
|
|
|
|
extern struct pv_fsys_data pv_fsys_data;
|
|
|
|
unsigned long *paravirt_get_fsyscall_table(void);
|
|
char *paravirt_get_fsys_bubble_down(void);
|
|
|
|
/******************************************************************************
|
|
* patchlist addresses for gate page
|
|
*/
|
|
enum pv_gate_patchlist {
|
|
PV_GATE_START_FSYSCALL,
|
|
PV_GATE_END_FSYSCALL,
|
|
|
|
PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
|
|
PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
|
|
|
|
PV_GATE_START_VTOP,
|
|
PV_GATE_END_VTOP,
|
|
|
|
PV_GATE_START_MCKINLEY_E9,
|
|
PV_GATE_END_MCKINLEY_E9,
|
|
};
|
|
|
|
struct pv_patchdata {
|
|
unsigned long start_fsyscall_patchlist;
|
|
unsigned long end_fsyscall_patchlist;
|
|
unsigned long start_brl_fsys_bubble_down_patchlist;
|
|
unsigned long end_brl_fsys_bubble_down_patchlist;
|
|
unsigned long start_vtop_patchlist;
|
|
unsigned long end_vtop_patchlist;
|
|
unsigned long start_mckinley_e9_patchlist;
|
|
unsigned long end_mckinley_e9_patchlist;
|
|
|
|
void *gate_section;
|
|
};
|
|
|
|
extern struct pv_patchdata pv_patchdata;
|
|
|
|
unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
|
|
void *paravirt_get_gate_section(void);
|
|
#endif
|
|
|
|
#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);
|
|
|
|
unsigned long long (*sched_clock)(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);
|
|
}
|
|
|
|
static inline unsigned long long paravirt_sched_clock(void)
|
|
{
|
|
return pv_time_ops.sched_clock();
|
|
}
|
|
|
|
#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 */
|