323 lines
7.6 KiB
C
323 lines
7.6 KiB
C
/******************************************************************************
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* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ASM_PARAVIRT_H
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#define __ASM_PARAVIRT_H
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#ifndef __ASSEMBLY__
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/******************************************************************************
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* fsys related addresses
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*/
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struct pv_fsys_data {
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unsigned long *fsyscall_table;
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void *fsys_bubble_down;
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};
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extern struct pv_fsys_data pv_fsys_data;
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unsigned long *paravirt_get_fsyscall_table(void);
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char *paravirt_get_fsys_bubble_down(void);
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/******************************************************************************
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* patchlist addresses for gate page
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*/
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enum pv_gate_patchlist {
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PV_GATE_START_FSYSCALL,
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PV_GATE_END_FSYSCALL,
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PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
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PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
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PV_GATE_START_VTOP,
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PV_GATE_END_VTOP,
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PV_GATE_START_MCKINLEY_E9,
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PV_GATE_END_MCKINLEY_E9,
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};
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struct pv_patchdata {
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unsigned long start_fsyscall_patchlist;
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unsigned long end_fsyscall_patchlist;
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unsigned long start_brl_fsys_bubble_down_patchlist;
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unsigned long end_brl_fsys_bubble_down_patchlist;
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unsigned long start_vtop_patchlist;
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unsigned long end_vtop_patchlist;
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unsigned long start_mckinley_e9_patchlist;
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unsigned long end_mckinley_e9_patchlist;
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void *gate_section;
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};
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extern struct pv_patchdata pv_patchdata;
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unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
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void *paravirt_get_gate_section(void);
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#endif
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#ifdef CONFIG_PARAVIRT_GUEST
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#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
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#define PARAVIRT_HYPERVISOR_TYPE_XEN 1
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#ifndef __ASSEMBLY__
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#include <asm/hw_irq.h>
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#include <asm/meminit.h>
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/******************************************************************************
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* general info
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*/
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struct pv_info {
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unsigned int kernel_rpl;
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int paravirt_enabled;
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const char *name;
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};
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extern struct pv_info pv_info;
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static inline int paravirt_enabled(void)
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{
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return pv_info.paravirt_enabled;
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}
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static inline unsigned int get_kernel_rpl(void)
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{
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return pv_info.kernel_rpl;
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}
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/******************************************************************************
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* initialization hooks.
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*/
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struct rsvd_region;
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struct pv_init_ops {
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void (*banner)(void);
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int (*reserve_memory)(struct rsvd_region *region);
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void (*arch_setup_early)(void);
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void (*arch_setup_console)(char **cmdline_p);
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int (*arch_setup_nomca)(void);
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void (*post_smp_prepare_boot_cpu)(void);
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#ifdef ASM_SUPPORTED
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unsigned long (*patch_bundle)(void *sbundle, void *ebundle,
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unsigned long type);
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unsigned long (*patch_inst)(unsigned long stag, unsigned long etag,
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unsigned long type);
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#endif
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void (*patch_branch)(unsigned long tag, unsigned long type);
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};
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extern struct pv_init_ops pv_init_ops;
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static inline void paravirt_banner(void)
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{
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if (pv_init_ops.banner)
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pv_init_ops.banner();
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}
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static inline int paravirt_reserve_memory(struct rsvd_region *region)
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{
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if (pv_init_ops.reserve_memory)
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return pv_init_ops.reserve_memory(region);
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return 0;
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}
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static inline void paravirt_arch_setup_early(void)
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{
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if (pv_init_ops.arch_setup_early)
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pv_init_ops.arch_setup_early();
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}
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static inline void paravirt_arch_setup_console(char **cmdline_p)
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{
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if (pv_init_ops.arch_setup_console)
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pv_init_ops.arch_setup_console(cmdline_p);
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}
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static inline int paravirt_arch_setup_nomca(void)
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{
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if (pv_init_ops.arch_setup_nomca)
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return pv_init_ops.arch_setup_nomca();
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return 0;
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}
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static inline void paravirt_post_smp_prepare_boot_cpu(void)
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{
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if (pv_init_ops.post_smp_prepare_boot_cpu)
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pv_init_ops.post_smp_prepare_boot_cpu();
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}
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/******************************************************************************
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* replacement of iosapic operations.
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*/
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struct pv_iosapic_ops {
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void (*pcat_compat_init)(void);
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struct irq_chip *(*__get_irq_chip)(unsigned long trigger);
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unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
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void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
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};
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extern struct pv_iosapic_ops pv_iosapic_ops;
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static inline void
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iosapic_pcat_compat_init(void)
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{
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if (pv_iosapic_ops.pcat_compat_init)
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pv_iosapic_ops.pcat_compat_init();
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}
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static inline struct irq_chip*
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iosapic_get_irq_chip(unsigned long trigger)
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{
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return pv_iosapic_ops.__get_irq_chip(trigger);
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}
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static inline unsigned int
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__iosapic_read(char __iomem *iosapic, unsigned int reg)
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{
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return pv_iosapic_ops.__read(iosapic, reg);
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}
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static inline void
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__iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
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{
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return pv_iosapic_ops.__write(iosapic, reg, val);
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}
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/******************************************************************************
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* replacement of irq operations.
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*/
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struct pv_irq_ops {
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void (*register_ipi)(void);
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int (*assign_irq_vector)(int irq);
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void (*free_irq_vector)(int vector);
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void (*register_percpu_irq)(ia64_vector vec,
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struct irqaction *action);
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void (*resend_irq)(unsigned int vector);
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};
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extern struct pv_irq_ops pv_irq_ops;
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static inline void
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ia64_register_ipi(void)
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{
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pv_irq_ops.register_ipi();
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}
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static inline int
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assign_irq_vector(int irq)
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{
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return pv_irq_ops.assign_irq_vector(irq);
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}
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static inline void
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free_irq_vector(int vector)
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{
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return pv_irq_ops.free_irq_vector(vector);
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}
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static inline void
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register_percpu_irq(ia64_vector vec, struct irqaction *action)
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{
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pv_irq_ops.register_percpu_irq(vec, action);
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}
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static inline void
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ia64_resend_irq(unsigned int vector)
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{
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pv_irq_ops.resend_irq(vector);
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}
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/******************************************************************************
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* replacement of time operations.
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*/
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extern struct itc_jitter_data_t itc_jitter_data;
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extern volatile int time_keeper_id;
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struct pv_time_ops {
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void (*init_missing_ticks_accounting)(int cpu);
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int (*do_steal_accounting)(unsigned long *new_itm);
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void (*clocksource_resume)(void);
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unsigned long long (*sched_clock)(void);
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};
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extern struct pv_time_ops pv_time_ops;
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static inline void
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paravirt_init_missing_ticks_accounting(int cpu)
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{
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if (pv_time_ops.init_missing_ticks_accounting)
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pv_time_ops.init_missing_ticks_accounting(cpu);
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}
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struct jump_label_key;
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extern struct jump_label_key paravirt_steal_enabled;
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extern struct jump_label_key paravirt_steal_rq_enabled;
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static inline int
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paravirt_do_steal_accounting(unsigned long *new_itm)
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{
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return pv_time_ops.do_steal_accounting(new_itm);
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}
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static inline unsigned long long paravirt_sched_clock(void)
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{
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return pv_time_ops.sched_clock();
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}
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#endif /* !__ASSEMBLY__ */
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#else
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/* fallback for native case */
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#ifndef __ASSEMBLY__
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#define paravirt_banner() do { } while (0)
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#define paravirt_reserve_memory(region) 0
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#define paravirt_arch_setup_early() do { } while (0)
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#define paravirt_arch_setup_console(cmdline_p) do { } while (0)
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#define paravirt_arch_setup_nomca() 0
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#define paravirt_post_smp_prepare_boot_cpu() do { } while (0)
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#define paravirt_init_missing_ticks_accounting(cpu) do { } while (0)
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#define paravirt_do_steal_accounting(new_itm) 0
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#endif /* __ASSEMBLY__ */
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#endif /* CONFIG_PARAVIRT_GUEST */
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#endif /* __ASM_PARAVIRT_H */
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