projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1ff730b5 IY |
1 | /****************************************************************************** |
| 2 | * include/asm-ia64/paravirt_privops.h | |
| 3 | * | |
| 4 | * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp> | |
| 5 | * VA Linux Systems Japan K.K. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | * | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _ASM_IA64_PARAVIRT_PRIVOP_H | |
| 24 | #define _ASM_IA64_PARAVIRT_PRIVOP_H | |
| 25 | ||
| 26 | #ifdef CONFIG_PARAVIRT | |
| 27 | ||
| 28 | #ifndef __ASSEMBLY__ | |
| 29 | ||
| 30 | #include <linux/types.h> | |
| 31 | #include <asm/kregs.h> /* for IA64_PSR_I */ | |
| 32 | ||
| 33 | /****************************************************************************** | |
| 34 | * replacement of intrinsics operations. | |
| 35 | */ | |
| 36 | ||
| 37 | struct pv_cpu_ops { | |
| 38 | void (*fc)(unsigned long addr); | |
| 39 | unsigned long (*thash)(unsigned long addr); | |
| 40 | unsigned long (*get_cpuid)(int index); | |
| 41 | unsigned long (*get_pmd)(int index); | |
| 42 | unsigned long (*getreg)(int reg); | |
| 43 | void (*setreg)(int reg, unsigned long val); | |
| 44 | void (*ptcga)(unsigned long addr, unsigned long size); | |
| 45 | unsigned long (*get_rr)(unsigned long index); | |
| 46 | void (*set_rr)(unsigned long index, unsigned long val); | |
| 47 | void (*set_rr0_to_rr4)(unsigned long val0, unsigned long val1, | |
| 48 | unsigned long val2, unsigned long val3, | |
| 49 | unsigned long val4); | |
| 50 | void (*ssm_i)(void); | |
| 51 | void (*rsm_i)(void); | |
| 52 | unsigned long (*get_psr_i)(void); | |
| 53 | void (*intrin_local_irq_restore)(unsigned long flags); | |
| 54 | }; | |
| 55 | ||
| 56 | extern struct pv_cpu_ops pv_cpu_ops; | |
| 57 | ||
| 58 | extern void ia64_native_setreg_func(int regnum, unsigned long val); | |
| 59 | extern unsigned long ia64_native_getreg_func(int regnum); | |
| 60 | ||
| 61 | /************************************************/ | |
| 62 | /* Instructions paravirtualized for performance */ | |
| 63 | /************************************************/ | |
| 64 | ||
| 65 | /* mask for ia64_native_ssm/rsm() must be constant.("i" constraing). | |
| 66 | * static inline function doesn't satisfy it. */ | |
| 67 | #define paravirt_ssm(mask) \ | |
| 68 | do { \ | |
| 69 | if ((mask) == IA64_PSR_I) \ | |
| 70 | pv_cpu_ops.ssm_i(); \ | |
| 71 | else \ | |
| 72 | ia64_native_ssm(mask); \ | |
| 73 | } while (0) | |
| 74 | ||
| 75 | #define paravirt_rsm(mask) \ | |
| 76 | do { \ | |
| 77 | if ((mask) == IA64_PSR_I) \ | |
| 78 | pv_cpu_ops.rsm_i(); \ | |
| 79 | else \ | |
| 80 | ia64_native_rsm(mask); \ | |
| 81 | } while (0) | |
| 82 | ||
| 4df8d22b IY |
83 | /****************************************************************************** |
| 84 | * replacement of hand written assembly codes. | |
| 85 | */ | |
| 86 | struct pv_cpu_asm_switch { | |
| 87 | unsigned long switch_to; | |
| 88 | unsigned long leave_syscall; | |
| 89 | unsigned long work_processed_syscall; | |
| 90 | unsigned long leave_kernel; | |
| 91 | }; | |
| 92 | void paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch); | |
| 93 | ||
| 1ff730b5 IY |
94 | #endif /* __ASSEMBLY__ */ |
| 95 | ||
| 4df8d22b IY |
96 | #define IA64_PARAVIRT_ASM_FUNC(name) paravirt_ ## name |
| 97 | ||
| 1ff730b5 IY |
98 | #else |
| 99 | ||
| 100 | /* fallback for native case */ | |
| 4df8d22b | 101 | #define IA64_PARAVIRT_ASM_FUNC(name) ia64_native_ ## name |
| 1ff730b5 IY |
102 | |
| 103 | #endif /* CONFIG_PARAVIRT */ | |
| 104 | ||
| 4df8d22b IY |
105 | /* these routines utilize privilege-sensitive or performance-sensitive |
| 106 | * privileged instructions so the code must be replaced with | |
| 107 | * paravirtualized versions */ | |
| 108 | #define ia64_switch_to IA64_PARAVIRT_ASM_FUNC(switch_to) | |
| 109 | #define ia64_leave_syscall IA64_PARAVIRT_ASM_FUNC(leave_syscall) | |
| 110 | #define ia64_work_processed_syscall \ | |
| 111 | IA64_PARAVIRT_ASM_FUNC(work_processed_syscall) | |
| 112 | #define ia64_leave_kernel IA64_PARAVIRT_ASM_FUNC(leave_kernel) | |
| 113 | ||
| 1ff730b5 | 114 | #endif /* _ASM_IA64_PARAVIRT_PRIVOP_H */ |