/****************************************************************************** * Copyright (c) 2008 Isaku Yamahata * 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 #include /****************************************************************************** * 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); #ifdef ASM_SUPPORTED unsigned long (*patch_bundle)(void *sbundle, void *ebundle, unsigned long type); unsigned long (*patch_inst)(unsigned long stag, unsigned long etag, unsigned long type); #endif void (*patch_branch)(unsigned long tag, unsigned long type); }; 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 */