1 /******************************************************************************
2 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
3 * VA Linux Systems Japan K.K.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef __ASM_PARAVIRT_H
23 #define __ASM_PARAVIRT_H
26 /******************************************************************************
27 * fsys related addresses
30 unsigned long *fsyscall_table
;
31 void *fsys_bubble_down
;
34 extern struct pv_fsys_data pv_fsys_data
;
36 unsigned long *paravirt_get_fsyscall_table(void);
37 char *paravirt_get_fsys_bubble_down(void);
39 /******************************************************************************
40 * patchlist addresses for gate page
42 enum pv_gate_patchlist
{
43 PV_GATE_START_FSYSCALL
,
46 PV_GATE_START_BRL_FSYS_BUBBLE_DOWN
,
47 PV_GATE_END_BRL_FSYS_BUBBLE_DOWN
,
52 PV_GATE_START_MCKINLEY_E9
,
53 PV_GATE_END_MCKINLEY_E9
,
57 unsigned long start_fsyscall_patchlist
;
58 unsigned long end_fsyscall_patchlist
;
59 unsigned long start_brl_fsys_bubble_down_patchlist
;
60 unsigned long end_brl_fsys_bubble_down_patchlist
;
61 unsigned long start_vtop_patchlist
;
62 unsigned long end_vtop_patchlist
;
63 unsigned long start_mckinley_e9_patchlist
;
64 unsigned long end_mckinley_e9_patchlist
;
69 extern struct pv_patchdata pv_patchdata
;
71 unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type
);
72 void *paravirt_get_gate_section(void);
75 #ifdef CONFIG_PARAVIRT_GUEST
77 #define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
78 #define PARAVIRT_HYPERVISOR_TYPE_XEN 1
82 #include <asm/hw_irq.h>
83 #include <asm/meminit.h>
85 /******************************************************************************
89 unsigned int kernel_rpl
;
94 extern struct pv_info pv_info
;
96 static inline int paravirt_enabled(void)
98 return pv_info
.paravirt_enabled
;
101 static inline unsigned int get_kernel_rpl(void)
103 return pv_info
.kernel_rpl
;
106 /******************************************************************************
107 * initialization hooks.
112 void (*banner
)(void);
114 int (*reserve_memory
)(struct rsvd_region
*region
);
116 void (*arch_setup_early
)(void);
117 void (*arch_setup_console
)(char **cmdline_p
);
118 int (*arch_setup_nomca
)(void);
120 void (*post_smp_prepare_boot_cpu
)(void);
123 extern struct pv_init_ops pv_init_ops
;
125 static inline void paravirt_banner(void)
127 if (pv_init_ops
.banner
)
128 pv_init_ops
.banner();
131 static inline int paravirt_reserve_memory(struct rsvd_region
*region
)
133 if (pv_init_ops
.reserve_memory
)
134 return pv_init_ops
.reserve_memory(region
);
138 static inline void paravirt_arch_setup_early(void)
140 if (pv_init_ops
.arch_setup_early
)
141 pv_init_ops
.arch_setup_early();
144 static inline void paravirt_arch_setup_console(char **cmdline_p
)
146 if (pv_init_ops
.arch_setup_console
)
147 pv_init_ops
.arch_setup_console(cmdline_p
);
150 static inline int paravirt_arch_setup_nomca(void)
152 if (pv_init_ops
.arch_setup_nomca
)
153 return pv_init_ops
.arch_setup_nomca();
157 static inline void paravirt_post_smp_prepare_boot_cpu(void)
159 if (pv_init_ops
.post_smp_prepare_boot_cpu
)
160 pv_init_ops
.post_smp_prepare_boot_cpu();
163 /******************************************************************************
164 * replacement of iosapic operations.
167 struct pv_iosapic_ops
{
168 void (*pcat_compat_init
)(void);
170 struct irq_chip
*(*__get_irq_chip
)(unsigned long trigger
);
172 unsigned int (*__read
)(char __iomem
*iosapic
, unsigned int reg
);
173 void (*__write
)(char __iomem
*iosapic
, unsigned int reg
, u32 val
);
176 extern struct pv_iosapic_ops pv_iosapic_ops
;
179 iosapic_pcat_compat_init(void)
181 if (pv_iosapic_ops
.pcat_compat_init
)
182 pv_iosapic_ops
.pcat_compat_init();
185 static inline struct irq_chip
*
186 iosapic_get_irq_chip(unsigned long trigger
)
188 return pv_iosapic_ops
.__get_irq_chip(trigger
);
191 static inline unsigned int
192 __iosapic_read(char __iomem
*iosapic
, unsigned int reg
)
194 return pv_iosapic_ops
.__read(iosapic
, reg
);
198 __iosapic_write(char __iomem
*iosapic
, unsigned int reg
, u32 val
)
200 return pv_iosapic_ops
.__write(iosapic
, reg
, val
);
203 /******************************************************************************
204 * replacement of irq operations.
208 void (*register_ipi
)(void);
210 int (*assign_irq_vector
)(int irq
);
211 void (*free_irq_vector
)(int vector
);
213 void (*register_percpu_irq
)(ia64_vector vec
,
214 struct irqaction
*action
);
216 void (*resend_irq
)(unsigned int vector
);
219 extern struct pv_irq_ops pv_irq_ops
;
222 ia64_register_ipi(void)
224 pv_irq_ops
.register_ipi();
228 assign_irq_vector(int irq
)
230 return pv_irq_ops
.assign_irq_vector(irq
);
234 free_irq_vector(int vector
)
236 return pv_irq_ops
.free_irq_vector(vector
);
240 register_percpu_irq(ia64_vector vec
, struct irqaction
*action
)
242 pv_irq_ops
.register_percpu_irq(vec
, action
);
246 ia64_resend_irq(unsigned int vector
)
248 pv_irq_ops
.resend_irq(vector
);
251 /******************************************************************************
252 * replacement of time operations.
255 extern struct itc_jitter_data_t itc_jitter_data
;
256 extern volatile int time_keeper_id
;
259 void (*init_missing_ticks_accounting
)(int cpu
);
260 int (*do_steal_accounting
)(unsigned long *new_itm
);
262 void (*clocksource_resume
)(void);
264 unsigned long long (*sched_clock
)(void);
267 extern struct pv_time_ops pv_time_ops
;
270 paravirt_init_missing_ticks_accounting(int cpu
)
272 if (pv_time_ops
.init_missing_ticks_accounting
)
273 pv_time_ops
.init_missing_ticks_accounting(cpu
);
277 paravirt_do_steal_accounting(unsigned long *new_itm
)
279 return pv_time_ops
.do_steal_accounting(new_itm
);
282 static inline unsigned long long paravirt_sched_clock(void)
284 return pv_time_ops
.sched_clock();
287 #endif /* !__ASSEMBLY__ */
290 /* fallback for native case */
294 #define paravirt_banner() do { } while (0)
295 #define paravirt_reserve_memory(region) 0
297 #define paravirt_arch_setup_early() do { } while (0)
298 #define paravirt_arch_setup_console(cmdline_p) do { } while (0)
299 #define paravirt_arch_setup_nomca() 0
300 #define paravirt_post_smp_prepare_boot_cpu() do { } while (0)
302 #define paravirt_init_missing_ticks_accounting(cpu) do { } while (0)
303 #define paravirt_do_steal_accounting(new_itm) 0
305 #endif /* __ASSEMBLY__ */
308 #endif /* CONFIG_PARAVIRT_GUEST */
310 #endif /* __ASM_PARAVIRT_H */