projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ASM_PPC64_PROCESSOR_H |
| 2 | #define __ASM_PPC64_PROCESSOR_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Copyright (C) 2001 PPC 64 Team, IBM Corp | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation; either version | |
| 10 | * 2 of the License, or (at your option) any later version. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/stringify.h> | |
| 14 | #ifndef __ASSEMBLY__ | |
| 15 | #include <linux/config.h> | |
| 16 | #include <asm/atomic.h> | |
| 17 | #include <asm/ppcdebug.h> | |
| 18 | #include <asm/a.out.h> | |
| 19 | #endif | |
| 20 | #include <asm/ptrace.h> | |
| 21 | #include <asm/types.h> | |
| 22 | #include <asm/systemcfg.h> | |
| 23 | ||
| 24 | /* Machine State Register (MSR) Fields */ | |
| 25 | #define MSR_SF_LG 63 /* Enable 64 bit mode */ | |
| 26 | #define MSR_ISF_LG 61 /* Interrupt 64b mode valid on 630 */ | |
| 27 | #define MSR_HV_LG 60 /* Hypervisor state */ | |
| 28 | #define MSR_VEC_LG 25 /* Enable AltiVec */ | |
| 29 | #define MSR_POW_LG 18 /* Enable Power Management */ | |
| 30 | #define MSR_WE_LG 18 /* Wait State Enable */ | |
| 31 | #define MSR_TGPR_LG 17 /* TLB Update registers in use */ | |
| 32 | #define MSR_CE_LG 17 /* Critical Interrupt Enable */ | |
| 33 | #define MSR_ILE_LG 16 /* Interrupt Little Endian */ | |
| 34 | #define MSR_EE_LG 15 /* External Interrupt Enable */ | |
| 35 | #define MSR_PR_LG 14 /* Problem State / Privilege Level */ | |
| 36 | #define MSR_FP_LG 13 /* Floating Point enable */ | |
| 37 | #define MSR_ME_LG 12 /* Machine Check Enable */ | |
| 38 | #define MSR_FE0_LG 11 /* Floating Exception mode 0 */ | |
| 39 | #define MSR_SE_LG 10 /* Single Step */ | |
| 40 | #define MSR_BE_LG 9 /* Branch Trace */ | |
| 41 | #define MSR_DE_LG 9 /* Debug Exception Enable */ | |
| 42 | #define MSR_FE1_LG 8 /* Floating Exception mode 1 */ | |
| 43 | #define MSR_IP_LG 6 /* Exception prefix 0x000/0xFFF */ | |
| 44 | #define MSR_IR_LG 5 /* Instruction Relocate */ | |
| 45 | #define MSR_DR_LG 4 /* Data Relocate */ | |
| 46 | #define MSR_PE_LG 3 /* Protection Enable */ | |
| 47 | #define MSR_PX_LG 2 /* Protection Exclusive Mode */ | |
| 48 | #define MSR_PMM_LG 2 /* Performance monitor */ | |
| 49 | #define MSR_RI_LG 1 /* Recoverable Exception */ | |
| 50 | #define MSR_LE_LG 0 /* Little Endian */ | |
| 51 | ||
| 52 | #ifdef __ASSEMBLY__ | |
| 53 | #define __MASK(X) (1<<(X)) | |
| 54 | #else | |
| 55 | #define __MASK(X) (1UL<<(X)) | |
| 56 | #endif | |
| 57 | ||
| 58 | #define MSR_SF __MASK(MSR_SF_LG) /* Enable 64 bit mode */ | |
| 59 | #define MSR_ISF __MASK(MSR_ISF_LG) /* Interrupt 64b mode valid on 630 */ | |
| 60 | #define MSR_HV __MASK(MSR_HV_LG) /* Hypervisor state */ | |
| 61 | #define MSR_VEC __MASK(MSR_VEC_LG) /* Enable AltiVec */ | |
| 62 | #define MSR_POW __MASK(MSR_POW_LG) /* Enable Power Management */ | |
| 63 | #define MSR_WE __MASK(MSR_WE_LG) /* Wait State Enable */ | |
| 64 | #define MSR_TGPR __MASK(MSR_TGPR_LG) /* TLB Update registers in use */ | |
| 65 | #define MSR_CE __MASK(MSR_CE_LG) /* Critical Interrupt Enable */ | |
| 66 | #define MSR_ILE __MASK(MSR_ILE_LG) /* Interrupt Little Endian */ | |
| 67 | #define MSR_EE __MASK(MSR_EE_LG) /* External Interrupt Enable */ | |
| 68 | #define MSR_PR __MASK(MSR_PR_LG) /* Problem State / Privilege Level */ | |
| 69 | #define MSR_FP __MASK(MSR_FP_LG) /* Floating Point enable */ | |
| 70 | #define MSR_ME __MASK(MSR_ME_LG) /* Machine Check Enable */ | |
| 71 | #define MSR_FE0 __MASK(MSR_FE0_LG) /* Floating Exception mode 0 */ | |
| 72 | #define MSR_SE __MASK(MSR_SE_LG) /* Single Step */ | |
| 73 | #define MSR_BE __MASK(MSR_BE_LG) /* Branch Trace */ | |
| 74 | #define MSR_DE __MASK(MSR_DE_LG) /* Debug Exception Enable */ | |
| 75 | #define MSR_FE1 __MASK(MSR_FE1_LG) /* Floating Exception mode 1 */ | |
| 76 | #define MSR_IP __MASK(MSR_IP_LG) /* Exception prefix 0x000/0xFFF */ | |
| 77 | #define MSR_IR __MASK(MSR_IR_LG) /* Instruction Relocate */ | |
| 78 | #define MSR_DR __MASK(MSR_DR_LG) /* Data Relocate */ | |
| 79 | #define MSR_PE __MASK(MSR_PE_LG) /* Protection Enable */ | |
| 80 | #define MSR_PX __MASK(MSR_PX_LG) /* Protection Exclusive Mode */ | |
| 81 | #define MSR_PMM __MASK(MSR_PMM_LG) /* Performance monitor */ | |
| 82 | #define MSR_RI __MASK(MSR_RI_LG) /* Recoverable Exception */ | |
| 83 | #define MSR_LE __MASK(MSR_LE_LG) /* Little Endian */ | |
| 84 | ||
| 85 | #define MSR_ MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_ISF | |
| 86 | #define MSR_KERNEL MSR_ | MSR_SF | MSR_HV | |
| 87 | ||
| 88 | #define MSR_USER32 MSR_ | MSR_PR | MSR_EE | |
| 89 | #define MSR_USER64 MSR_USER32 | MSR_SF | |
| 90 | ||
| 91 | /* Floating Point Status and Control Register (FPSCR) Fields */ | |
| 92 | ||
| 93 | #define FPSCR_FX 0x80000000 /* FPU exception summary */ | |
| 94 | #define FPSCR_FEX 0x40000000 /* FPU enabled exception summary */ | |
| 95 | #define FPSCR_VX 0x20000000 /* Invalid operation summary */ | |
| 96 | #define FPSCR_OX 0x10000000 /* Overflow exception summary */ | |
| 97 | #define FPSCR_UX 0x08000000 /* Underflow exception summary */ | |
| 98 | #define FPSCR_ZX 0x04000000 /* Zero-divide exception summary */ | |
| 99 | #define FPSCR_XX 0x02000000 /* Inexact exception summary */ | |
| 100 | #define FPSCR_VXSNAN 0x01000000 /* Invalid op for SNaN */ | |
| 101 | #define FPSCR_VXISI 0x00800000 /* Invalid op for Inv - Inv */ | |
| 102 | #define FPSCR_VXIDI 0x00400000 /* Invalid op for Inv / Inv */ | |
| 103 | #define FPSCR_VXZDZ 0x00200000 /* Invalid op for Zero / Zero */ | |
| 104 | #define FPSCR_VXIMZ 0x00100000 /* Invalid op for Inv * Zero */ | |
| 105 | #define FPSCR_VXVC 0x00080000 /* Invalid op for Compare */ | |
| 106 | #define FPSCR_FR 0x00040000 /* Fraction rounded */ | |
| 107 | #define FPSCR_FI 0x00020000 /* Fraction inexact */ | |
| 108 | #define FPSCR_FPRF 0x0001f000 /* FPU Result Flags */ | |
| 109 | #define FPSCR_FPCC 0x0000f000 /* FPU Condition Codes */ | |
| 110 | #define FPSCR_VXSOFT 0x00000400 /* Invalid op for software request */ | |
| 111 | #define FPSCR_VXSQRT 0x00000200 /* Invalid op for square root */ | |
| 112 | #define FPSCR_VXCVI 0x00000100 /* Invalid op for integer convert */ | |
| 113 | #define FPSCR_VE 0x00000080 /* Invalid op exception enable */ | |
| 114 | #define FPSCR_OE 0x00000040 /* IEEE overflow exception enable */ | |
| 115 | #define FPSCR_UE 0x00000020 /* IEEE underflow exception enable */ | |
| 116 | #define FPSCR_ZE 0x00000010 /* IEEE zero divide exception enable */ | |
| 117 | #define FPSCR_XE 0x00000008 /* FP inexact exception enable */ | |
| 118 | #define FPSCR_NI 0x00000004 /* FPU non IEEE-Mode */ | |
| 119 | #define FPSCR_RN 0x00000003 /* FPU rounding control */ | |
| 120 | ||
| 121 | /* Special Purpose Registers (SPRNs)*/ | |
| 122 | ||
| 1da177e4 LT |
123 | #define SPRN_CTR 0x009 /* Count Register */ |
| 124 | #define SPRN_DABR 0x3F5 /* Data Address Breakpoint Register */ | |
| 79f12489 | 125 | #define DABR_TRANSLATION (1UL << 2) |
| 1da177e4 | 126 | #define SPRN_DAR 0x013 /* Data Address Register */ |
| 1da177e4 | 127 | #define SPRN_DEC 0x016 /* Decrement Register */ |
| 1da177e4 LT |
128 | #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */ |
| 129 | #define DSISR_NOHPTE 0x40000000 /* no translation found */ | |
| 130 | #define DSISR_PROTFAULT 0x08000000 /* protection fault */ | |
| 131 | #define DSISR_ISSTORE 0x02000000 /* access was a store */ | |
| 132 | #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */ | |
| 133 | #define DSISR_NOSEGMENT 0x00200000 /* STAB/SLB miss */ | |
| 1da177e4 | 134 | #define SPRN_HID0 0x3F0 /* Hardware Implementation Register 0 */ |
| 1da177e4 LT |
135 | #define SPRN_MSRDORM 0x3F1 /* Hardware Implementation Register 1 */ |
| 136 | #define SPRN_HID1 0x3F1 /* Hardware Implementation Register 1 */ | |
| 137 | #define SPRN_IABR 0x3F2 /* Instruction Address Breakpoint Register */ | |
| 138 | #define SPRN_NIADORM 0x3F3 /* Hardware Implementation Register 2 */ | |
| 139 | #define SPRN_HID4 0x3F4 /* 970 HID4 */ | |
| 140 | #define SPRN_HID5 0x3F6 /* 970 HID5 */ | |
| 141 | #define SPRN_TSC 0x3FD /* Thread switch control */ | |
| 142 | #define SPRN_TST 0x3FC /* Thread switch timeout */ | |
| 1da177e4 LT |
143 | #define SPRN_L2CR 0x3F9 /* Level 2 Cache Control Regsiter */ |
| 144 | #define SPRN_LR 0x008 /* Link Register */ | |
| 1da177e4 LT |
145 | #define SPRN_PIR 0x3FF /* Processor Identification Register */ |
| 146 | #define SPRN_PIT 0x3DB /* Programmable Interval Timer */ | |
| 147 | #define SPRN_PURR 0x135 /* Processor Utilization of Resources Register */ | |
| 148 | #define SPRN_PVR 0x11F /* Processor Version Register */ | |
| 149 | #define SPRN_RPA 0x3D6 /* Required Physical Address Register */ | |
| 150 | #define SPRN_SDA 0x3BF /* Sampled Data Address Register */ | |
| 151 | #define SPRN_SDR1 0x019 /* MMU Hash Base Register */ | |
| 1da177e4 LT |
152 | #define SPRN_SIA 0x3BB /* Sampled Instruction Address Register */ |
| 153 | #define SPRN_SPRG0 0x110 /* Special Purpose Register General 0 */ | |
| 154 | #define SPRN_SPRG1 0x111 /* Special Purpose Register General 1 */ | |
| 155 | #define SPRN_SPRG2 0x112 /* Special Purpose Register General 2 */ | |
| 156 | #define SPRN_SPRG3 0x113 /* Special Purpose Register General 3 */ | |
| 157 | #define SPRN_SRR0 0x01A /* Save/Restore Register 0 */ | |
| 158 | #define SPRN_SRR1 0x01B /* Save/Restore Register 1 */ | |
| 159 | #define SPRN_TBRL 0x10C /* Time Base Read Lower Register (user, R/O) */ | |
| 160 | #define SPRN_TBRU 0x10D /* Time Base Read Upper Register (user, R/O) */ | |
| 161 | #define SPRN_TBWL 0x11C /* Time Base Lower Register (super, W/O) */ | |
| 162 | #define SPRN_TBWU 0x11D /* Time Base Write Upper Register (super, W/O) */ | |
| 163 | #define SPRN_HIOR 0x137 /* 970 Hypervisor interrupt offset */ | |
| 1da177e4 LT |
164 | #define SPRN_USIA 0x3AB /* User Sampled Instruction Address Register */ |
| 165 | #define SPRN_XER 0x001 /* Fixed Point Exception Register */ | |
| 1da177e4 | 166 | #define SPRN_VRSAVE 0x100 /* Vector save */ |
| 6dc2f0c7 AB |
167 | #define SPRN_CTRLF 0x088 |
| 168 | #define SPRN_CTRLT 0x098 | |
| 169 | #define CTRL_RUNLATCH 0x1 | |
| 1da177e4 LT |
170 | |
| 171 | /* Performance monitor SPRs */ | |
| 172 | #define SPRN_SIAR 780 | |
| 173 | #define SPRN_SDAR 781 | |
| 174 | #define SPRN_MMCRA 786 | |
| 175 | #define MMCRA_SIHV 0x10000000UL /* state of MSR HV when SIAR set */ | |
| 176 | #define MMCRA_SIPR 0x08000000UL /* state of MSR PR when SIAR set */ | |
| 177 | #define MMCRA_SAMPLE_ENABLE 0x00000001UL /* enable sampling */ | |
| 178 | #define SPRN_PMC1 787 | |
| 179 | #define SPRN_PMC2 788 | |
| 180 | #define SPRN_PMC3 789 | |
| 181 | #define SPRN_PMC4 790 | |
| 182 | #define SPRN_PMC5 791 | |
| 183 | #define SPRN_PMC6 792 | |
| 184 | #define SPRN_PMC7 793 | |
| 185 | #define SPRN_PMC8 794 | |
| 186 | #define SPRN_MMCR0 795 | |
| 187 | #define MMCR0_FC 0x80000000UL /* freeze counters. set to 1 on a perfmon exception */ | |
| 188 | #define MMCR0_FCS 0x40000000UL /* freeze in supervisor state */ | |
| 189 | #define MMCR0_KERNEL_DISABLE MMCR0_FCS | |
| 190 | #define MMCR0_FCP 0x20000000UL /* freeze in problem state */ | |
| 191 | #define MMCR0_PROBLEM_DISABLE MMCR0_FCP | |
| 192 | #define MMCR0_FCM1 0x10000000UL /* freeze counters while MSR mark = 1 */ | |
| 193 | #define MMCR0_FCM0 0x08000000UL /* freeze counters while MSR mark = 0 */ | |
| 194 | #define MMCR0_PMXE 0x04000000UL /* performance monitor exception enable */ | |
| 195 | #define MMCR0_FCECE 0x02000000UL /* freeze counters on enabled condition or event */ | |
| 196 | /* time base exception enable */ | |
| 197 | #define MMCR0_TBEE 0x00400000UL /* time base exception enable */ | |
| 198 | #define MMCR0_PMC1CE 0x00008000UL /* PMC1 count enable*/ | |
| 199 | #define MMCR0_PMCjCE 0x00004000UL /* PMCj count enable*/ | |
| 200 | #define MMCR0_TRIGGER 0x00002000UL /* TRIGGER enable */ | |
| 201 | #define MMCR0_PMAO 0x00000080UL /* performance monitor alert has occurred, set to 0 after handling exception */ | |
| 202 | #define MMCR0_SHRFC 0x00000040UL /* SHRre freeze conditions between threads */ | |
| 203 | #define MMCR0_FCTI 0x00000008UL /* freeze counters in tags inactive mode */ | |
| 204 | #define MMCR0_FCTA 0x00000004UL /* freeze counters in tags active mode */ | |
| 205 | #define MMCR0_FCWAIT 0x00000002UL /* freeze counter in WAIT state */ | |
| 206 | #define MMCR0_FCHV 0x00000001UL /* freeze conditions in hypervisor mode */ | |
| 207 | #define SPRN_MMCR1 798 | |
| 208 | ||
| 209 | /* Short-hand versions for a number of the above SPRNs */ | |
| 210 | ||
| 211 | #define CTR SPRN_CTR /* Counter Register */ | |
| 212 | #define DAR SPRN_DAR /* Data Address Register */ | |
| 213 | #define DABR SPRN_DABR /* Data Address Breakpoint Register */ | |
| 1da177e4 | 214 | #define DEC SPRN_DEC /* Decrement Register */ |
| 1da177e4 | 215 | #define DSISR SPRN_DSISR /* Data Storage Interrupt Status Register */ |
| 1da177e4 LT |
216 | #define HID0 SPRN_HID0 /* Hardware Implementation Register 0 */ |
| 217 | #define MSRDORM SPRN_MSRDORM /* MSR Dormant Register */ | |
| 218 | #define NIADORM SPRN_NIADORM /* NIA Dormant Register */ | |
| 219 | #define TSC SPRN_TSC /* Thread switch control */ | |
| 220 | #define TST SPRN_TST /* Thread switch timeout */ | |
| 221 | #define IABR SPRN_IABR /* Instruction Address Breakpoint Register */ | |
| 1da177e4 LT |
222 | #define L2CR SPRN_L2CR /* PPC 750 L2 control register */ |
| 223 | #define __LR SPRN_LR | |
| 224 | #define PVR SPRN_PVR /* Processor Version */ | |
| 225 | #define PIR SPRN_PIR /* Processor ID */ | |
| 226 | #define PURR SPRN_PURR /* Processor Utilization of Resource Register */ | |
| 1da177e4 LT |
227 | #define SDR1 SPRN_SDR1 /* MMU hash base register */ |
| 228 | #define SPR0 SPRN_SPRG0 /* Supervisor Private Registers */ | |
| 229 | #define SPR1 SPRN_SPRG1 | |
| 230 | #define SPR2 SPRN_SPRG2 | |
| 231 | #define SPR3 SPRN_SPRG3 | |
| 232 | #define SPRG0 SPRN_SPRG0 | |
| 233 | #define SPRG1 SPRN_SPRG1 | |
| 234 | #define SPRG2 SPRN_SPRG2 | |
| 235 | #define SPRG3 SPRN_SPRG3 | |
| 236 | #define SRR0 SPRN_SRR0 /* Save and Restore Register 0 */ | |
| 237 | #define SRR1 SPRN_SRR1 /* Save and Restore Register 1 */ | |
| 238 | #define TBRL SPRN_TBRL /* Time Base Read Lower Register */ | |
| 239 | #define TBRU SPRN_TBRU /* Time Base Read Upper Register */ | |
| 240 | #define TBWL SPRN_TBWL /* Time Base Write Lower Register */ | |
| 241 | #define TBWU SPRN_TBWU /* Time Base Write Upper Register */ | |
| 1da177e4 LT |
242 | #define XER SPRN_XER |
| 243 | ||
| 244 | /* Processor Version Register (PVR) field extraction */ | |
| 245 | ||
| 246 | #define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */ | |
| 247 | #define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */ | |
| 248 | ||
| 249 | /* Processor Version Numbers */ | |
| 250 | #define PV_NORTHSTAR 0x0033 | |
| 251 | #define PV_PULSAR 0x0034 | |
| 252 | #define PV_POWER4 0x0035 | |
| 253 | #define PV_ICESTAR 0x0036 | |
| 254 | #define PV_SSTAR 0x0037 | |
| 255 | #define PV_POWER4p 0x0038 | |
| 256 | #define PV_970 0x0039 | |
| 257 | #define PV_POWER5 0x003A | |
| 258 | #define PV_POWER5p 0x003B | |
| 259 | #define PV_970FX 0x003C | |
| 260 | #define PV_630 0x0040 | |
| 261 | #define PV_630p 0x0041 | |
| 262 | ||
| 263 | /* Platforms supported by PPC64 */ | |
| 264 | #define PLATFORM_PSERIES 0x0100 | |
| 265 | #define PLATFORM_PSERIES_LPAR 0x0101 | |
| 266 | #define PLATFORM_ISERIES_LPAR 0x0201 | |
| 267 | #define PLATFORM_LPAR 0x0001 | |
| 268 | #define PLATFORM_POWERMAC 0x0400 | |
| 269 | #define PLATFORM_MAPLE 0x0500 | |
| 270 | ||
| 271 | /* Compatibility with drivers coming from PPC32 world */ | |
| 272 | #define _machine (systemcfg->platform) | |
| 273 | #define _MACH_Pmac PLATFORM_POWERMAC | |
| 274 | ||
| 275 | /* | |
| 276 | * List of interrupt controllers. | |
| 277 | */ | |
| 278 | #define IC_INVALID 0 | |
| 279 | #define IC_OPEN_PIC 1 | |
| 280 | #define IC_PPC_XIC 2 | |
| 281 | ||
| 282 | #define XGLUE(a,b) a##b | |
| 283 | #define GLUE(a,b) XGLUE(a,b) | |
| 284 | ||
| 1da177e4 LT |
285 | #ifdef __ASSEMBLY__ |
| 286 | ||
| 287 | #define _GLOBAL(name) \ | |
| 288 | .section ".text"; \ | |
| 289 | .align 2 ; \ | |
| 290 | .globl name; \ | |
| 291 | .globl GLUE(.,name); \ | |
| 292 | .section ".opd","aw"; \ | |
| 293 | name: \ | |
| 294 | .quad GLUE(.,name); \ | |
| 295 | .quad .TOC.@tocbase; \ | |
| 296 | .quad 0; \ | |
| 297 | .previous; \ | |
| 298 | .type GLUE(.,name),@function; \ | |
| 299 | GLUE(.,name): | |
| 300 | ||
| 301 | #define _STATIC(name) \ | |
| 302 | .section ".text"; \ | |
| 303 | .align 2 ; \ | |
| 304 | .section ".opd","aw"; \ | |
| 305 | name: \ | |
| 306 | .quad GLUE(.,name); \ | |
| 307 | .quad .TOC.@tocbase; \ | |
| 308 | .quad 0; \ | |
| 309 | .previous; \ | |
| 310 | .type GLUE(.,name),@function; \ | |
| 311 | GLUE(.,name): | |
| 312 | ||
| 313 | #else /* __ASSEMBLY__ */ | |
| 314 | ||
| 315 | /* | |
| 316 | * Default implementation of macro that returns current | |
| 317 | * instruction pointer ("program counter"). | |
| 318 | */ | |
| 319 | #define current_text_addr() ({ __label__ _l; _l: &&_l;}) | |
| 320 | ||
| 321 | /* Macros for setting and retrieving special purpose registers */ | |
| 322 | ||
| 323 | #define mfmsr() ({unsigned long rval; \ | |
| 324 | asm volatile("mfmsr %0" : "=r" (rval)); rval;}) | |
| 325 | ||
| 326 | #define __mtmsrd(v, l) asm volatile("mtmsrd %0," __stringify(l) \ | |
| 327 | : : "r" (v)) | |
| 328 | #define mtmsrd(v) __mtmsrd((v), 0) | |
| 329 | ||
| 330 | #define mfspr(rn) ({unsigned long rval; \ | |
| 331 | asm volatile("mfspr %0," __stringify(rn) \ | |
| 332 | : "=r" (rval)); rval;}) | |
| 333 | #define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)) | |
| 334 | ||
| 335 | #define mftb() ({unsigned long rval; \ | |
| 336 | asm volatile("mftb %0" : "=r" (rval)); rval;}) | |
| 337 | ||
| 338 | #define mttbl(v) asm volatile("mttbl %0":: "r"(v)) | |
| 339 | #define mttbu(v) asm volatile("mttbu %0":: "r"(v)) | |
| 340 | ||
| 341 | #define mfasr() ({unsigned long rval; \ | |
| 342 | asm volatile("mfasr %0" : "=r" (rval)); rval;}) | |
| 343 | ||
| 344 | static inline void set_tb(unsigned int upper, unsigned int lower) | |
| 345 | { | |
| 346 | mttbl(0); | |
| 347 | mttbu(upper); | |
| 348 | mttbl(lower); | |
| 349 | } | |
| 350 | ||
| 351 | #define __get_SP() ({unsigned long sp; \ | |
| 352 | asm volatile("mr %0,1": "=r" (sp)); sp;}) | |
| 353 | ||
| 354 | #ifdef __KERNEL__ | |
| 355 | ||
| 356 | extern int have_of; | |
| 357 | extern u64 ppc64_interrupt_controller; | |
| 358 | ||
| 359 | struct task_struct; | |
| 360 | void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp); | |
| 361 | void release_thread(struct task_struct *); | |
| 362 | ||
| 363 | /* Prepare to copy thread state - unlazy all lazy status */ | |
| 364 | extern void prepare_to_copy(struct task_struct *tsk); | |
| 365 | ||
| 366 | /* Create a new kernel thread. */ | |
| 367 | extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); | |
| 368 | ||
| 369 | /* Lazy FPU handling on uni-processor */ | |
| 370 | extern struct task_struct *last_task_used_math; | |
| 371 | extern struct task_struct *last_task_used_altivec; | |
| 372 | ||
| 373 | /* 64-bit user address space is 41-bits (2TBs user VM) */ | |
| 374 | #define TASK_SIZE_USER64 (0x0000020000000000UL) | |
| 375 | ||
| 376 | /* | |
| 377 | * 32-bit user address space is 4GB - 1 page | |
| 378 | * (this 1 page is needed so referencing of 0xFFFFFFFF generates EFAULT | |
| 379 | */ | |
| 380 | #define TASK_SIZE_USER32 (0x0000000100000000UL - (1*PAGE_SIZE)) | |
| 381 | ||
| 382 | #define TASK_SIZE (test_thread_flag(TIF_32BIT) ? \ | |
| 383 | TASK_SIZE_USER32 : TASK_SIZE_USER64) | |
| 384 | ||
| 1da177e4 LT |
385 | /* This decides where the kernel will search for a free chunk of vm |
| 386 | * space during mmap's. | |
| 387 | */ | |
| 388 | #define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4)) | |
| 389 | #define TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(TASK_SIZE_USER64 / 4)) | |
| 390 | ||
| 391 | #define TASK_UNMAPPED_BASE ((test_thread_flag(TIF_32BIT)||(ppcdebugset(PPCDBG_BINFMT_32ADDR))) ? \ | |
| 392 | TASK_UNMAPPED_BASE_USER32 : TASK_UNMAPPED_BASE_USER64 ) | |
| 393 | ||
| 394 | typedef struct { | |
| 395 | unsigned long seg; | |
| 396 | } mm_segment_t; | |
| 397 | ||
| 398 | struct thread_struct { | |
| 399 | unsigned long ksp; /* Kernel stack pointer */ | |
| 400 | unsigned long ksp_vsid; | |
| 401 | struct pt_regs *regs; /* Pointer to saved register state */ | |
| 402 | mm_segment_t fs; /* for get_fs() validation */ | |
| 403 | double fpr[32]; /* Complete floating point set */ | |
| 404 | unsigned long fpscr; /* Floating point status (plus pad) */ | |
| 405 | unsigned long fpexc_mode; /* Floating-point exception mode */ | |
| 406 | unsigned long start_tb; /* Start purr when proc switched in */ | |
| 407 | unsigned long accum_tb; /* Total accumilated purr for process */ | |
| 408 | unsigned long vdso_base; /* base of the vDSO library */ | |
| 409 | #ifdef CONFIG_ALTIVEC | |
| 410 | /* Complete AltiVec register set */ | |
| 411 | vector128 vr[32] __attribute((aligned(16))); | |
| 412 | /* AltiVec status */ | |
| 413 | vector128 vscr __attribute((aligned(16))); | |
| 414 | unsigned long vrsave; | |
| 415 | int used_vr; /* set if process has used altivec */ | |
| 416 | #endif /* CONFIG_ALTIVEC */ | |
| 417 | }; | |
| 418 | ||
| 419 | #define ARCH_MIN_TASKALIGN 16 | |
| 420 | ||
| 421 | #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack) | |
| 422 | ||
| 423 | #define INIT_THREAD { \ | |
| 424 | .ksp = INIT_SP, \ | |
| 425 | .regs = (struct pt_regs *)INIT_SP - 1, \ | |
| 426 | .fs = KERNEL_DS, \ | |
| 427 | .fpr = {0}, \ | |
| 428 | .fpscr = 0, \ | |
| 429 | .fpexc_mode = MSR_FE0|MSR_FE1, \ | |
| 430 | } | |
| 431 | ||
| 432 | /* | |
| 433 | * Note: the vm_start and vm_end fields here should *not* | |
| 434 | * be in kernel space. (Could vm_end == vm_start perhaps?) | |
| 435 | */ | |
| 436 | #define IOREMAP_MMAP { &ioremap_mm, 0, 0x1000, NULL, \ | |
| 437 | PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, \ | |
| 438 | 1, NULL, NULL } | |
| 439 | ||
| 440 | extern struct mm_struct ioremap_mm; | |
| 441 | ||
| 442 | /* | |
| 443 | * Return saved PC of a blocked thread. For now, this is the "user" PC | |
| 444 | */ | |
| 445 | #define thread_saved_pc(tsk) \ | |
| 446 | ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0) | |
| 447 | ||
| 448 | unsigned long get_wchan(struct task_struct *p); | |
| 449 | ||
| 450 | #define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0) | |
| 451 | #define KSTK_ESP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->gpr[1]: 0) | |
| 452 | ||
| 453 | /* Get/set floating-point exception mode */ | |
| 454 | #define GET_FPEXC_CTL(tsk, adr) get_fpexc_mode((tsk), (adr)) | |
| 455 | #define SET_FPEXC_CTL(tsk, val) set_fpexc_mode((tsk), (val)) | |
| 456 | ||
| 457 | extern int get_fpexc_mode(struct task_struct *tsk, unsigned long adr); | |
| 458 | extern int set_fpexc_mode(struct task_struct *tsk, unsigned int val); | |
| 459 | ||
| 460 | static inline unsigned int __unpack_fe01(unsigned long msr_bits) | |
| 461 | { | |
| 462 | return ((msr_bits & MSR_FE0) >> 10) | ((msr_bits & MSR_FE1) >> 8); | |
| 463 | } | |
| 464 | ||
| 465 | static inline unsigned long __pack_fe01(unsigned int fpmode) | |
| 466 | { | |
| 467 | return ((fpmode << 10) & MSR_FE0) | ((fpmode << 8) & MSR_FE1); | |
| 468 | } | |
| 469 | ||
| 470 | #define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0) | |
| 471 | ||
| 472 | /* | |
| 473 | * Prefetch macros. | |
| 474 | */ | |
| 475 | #define ARCH_HAS_PREFETCH | |
| 476 | #define ARCH_HAS_PREFETCHW | |
| 477 | #define ARCH_HAS_SPINLOCK_PREFETCH | |
| 478 | ||
| 479 | static inline void prefetch(const void *x) | |
| 480 | { | |
| e63f8f43 OJ |
481 | if (unlikely(!x)) |
| 482 | return; | |
| 483 | ||
| 1da177e4 LT |
484 | __asm__ __volatile__ ("dcbt 0,%0" : : "r" (x)); |
| 485 | } | |
| 486 | ||
| 487 | static inline void prefetchw(const void *x) | |
| 488 | { | |
| e63f8f43 OJ |
489 | if (unlikely(!x)) |
| 490 | return; | |
| 491 | ||
| 1da177e4 LT |
492 | __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (x)); |
| 493 | } | |
| 494 | ||
| 495 | #define spin_lock_prefetch(x) prefetchw(x) | |
| 496 | ||
| 497 | #define HAVE_ARCH_PICK_MMAP_LAYOUT | |
| 498 | ||
| 6dc2f0c7 AB |
499 | static inline void ppc64_runlatch_on(void) |
| 500 | { | |
| 501 | unsigned long ctrl; | |
| 502 | ||
| 503 | ctrl = mfspr(SPRN_CTRLF); | |
| 504 | ctrl |= CTRL_RUNLATCH; | |
| 505 | mtspr(SPRN_CTRLT, ctrl); | |
| 506 | } | |
| 507 | ||
| 508 | static inline void ppc64_runlatch_off(void) | |
| 509 | { | |
| 510 | unsigned long ctrl; | |
| 511 | ||
| 512 | ctrl = mfspr(SPRN_CTRLF); | |
| 513 | ctrl &= ~CTRL_RUNLATCH; | |
| 514 | mtspr(SPRN_CTRLT, ctrl); | |
| 515 | } | |
| 516 | ||
| 1da177e4 LT |
517 | #endif /* __KERNEL__ */ |
| 518 | ||
| 519 | #endif /* __ASSEMBLY__ */ | |
| 520 | ||
| 521 | /* | |
| 522 | * Number of entries in the SLB. If this ever changes we should handle | |
| 523 | * it with a use a cpu feature fixup. | |
| 524 | */ | |
| 525 | #define SLB_NUM_ENTRIES 64 | |
| 526 | ||
| 527 | #endif /* __ASM_PPC64_PROCESSOR_H */ |