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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
123#define SPRN_CDBCR 0x3D7 /* Cache Debug Control Register */
124#define SPRN_CTR 0x009 /* Count Register */
125#define SPRN_DABR 0x3F5 /* Data Address Breakpoint Register */
126#define SPRN_DAC1 0x3F6 /* Data Address Compare 1 */
127#define SPRN_DAC2 0x3F7 /* Data Address Compare 2 */
128#define SPRN_DAR 0x013 /* Data Address Register */
129#define SPRN_DBCR 0x3F2 /* Debug Control Regsiter */
130#define DBCR_EDM 0x80000000
131#define DBCR_IDM 0x40000000
132#define DBCR_RST(x) (((x) & 0x3) << 28)
133#define DBCR_RST_NONE 0
134#define DBCR_RST_CORE 1
135#define DBCR_RST_CHIP 2
136#define DBCR_RST_SYSTEM 3
137#define DBCR_IC 0x08000000 /* Instruction Completion Debug Evnt */
138#define DBCR_BT 0x04000000 /* Branch Taken Debug Event */
139#define DBCR_EDE 0x02000000 /* Exception Debug Event */
140#define DBCR_TDE 0x01000000 /* TRAP Debug Event */
141#define DBCR_FER 0x00F80000 /* First Events Remaining Mask */
142#define DBCR_FT 0x00040000 /* Freeze Timers on Debug Event */
143#define DBCR_IA1 0x00020000 /* Instr. Addr. Compare 1 Enable */
144#define DBCR_IA2 0x00010000 /* Instr. Addr. Compare 2 Enable */
145#define DBCR_D1R 0x00008000 /* Data Addr. Compare 1 Read Enable */
146#define DBCR_D1W 0x00004000 /* Data Addr. Compare 1 Write Enable */
147#define DBCR_D1S(x) (((x) & 0x3) << 12) /* Data Adrr. Compare 1 Size */
148#define DAC_BYTE 0
149#define DAC_HALF 1
150#define DAC_WORD 2
151#define DAC_QUAD 3
152#define DBCR_D2R 0x00000800 /* Data Addr. Compare 2 Read Enable */
153#define DBCR_D2W 0x00000400 /* Data Addr. Compare 2 Write Enable */
154#define DBCR_D2S(x) (((x) & 0x3) << 8) /* Data Addr. Compare 2 Size */
155#define DBCR_SBT 0x00000040 /* Second Branch Taken Debug Event */
156#define DBCR_SED 0x00000020 /* Second Exception Debug Event */
157#define DBCR_STD 0x00000010 /* Second Trap Debug Event */
158#define DBCR_SIA 0x00000008 /* Second IAC Enable */
159#define DBCR_SDA 0x00000004 /* Second DAC Enable */
160#define DBCR_JOI 0x00000002 /* JTAG Serial Outbound Int. Enable */
161#define DBCR_JII 0x00000001 /* JTAG Serial Inbound Int. Enable */
162#define SPRN_DBCR0 0x3F2 /* Debug Control Register 0 */
163#define SPRN_DBCR1 0x3BD /* Debug Control Register 1 */
164#define SPRN_DBSR 0x3F0 /* Debug Status Register */
165#define SPRN_DCCR 0x3FA /* Data Cache Cacheability Register */
166#define DCCR_NOCACHE 0 /* Noncacheable */
167#define DCCR_CACHE 1 /* Cacheable */
168#define SPRN_DCMP 0x3D1 /* Data TLB Compare Register */
169#define SPRN_DCWR 0x3BA /* Data Cache Write-thru Register */
170#define DCWR_COPY 0 /* Copy-back */
171#define DCWR_WRITE 1 /* Write-through */
172#define SPRN_DEAR 0x3D5 /* Data Error Address Register */
173#define SPRN_DEC 0x016 /* Decrement Register */
174#define SPRN_DMISS 0x3D0 /* Data TLB Miss Register */
175#define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */
176#define DSISR_NOHPTE 0x40000000 /* no translation found */
177#define DSISR_PROTFAULT 0x08000000 /* protection fault */
178#define DSISR_ISSTORE 0x02000000 /* access was a store */
179#define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */
180#define DSISR_NOSEGMENT 0x00200000 /* STAB/SLB miss */
181#define SPRN_EAR 0x11A /* External Address Register */
182#define SPRN_ESR 0x3D4 /* Exception Syndrome Register */
183#define ESR_IMCP 0x80000000 /* Instr. Machine Check - Protection */
184#define ESR_IMCN 0x40000000 /* Instr. Machine Check - Non-config */
185#define ESR_IMCB 0x20000000 /* Instr. Machine Check - Bus error */
186#define ESR_IMCT 0x10000000 /* Instr. Machine Check - Timeout */
187#define ESR_PIL 0x08000000 /* Program Exception - Illegal */
188#define ESR_PPR 0x04000000 /* Program Exception - Priveleged */
189#define ESR_PTR 0x02000000 /* Program Exception - Trap */
190#define ESR_DST 0x00800000 /* Storage Exception - Data miss */
191#define ESR_DIZ 0x00400000 /* Storage Exception - Zone fault */
192#define SPRN_EVPR 0x3D6 /* Exception Vector Prefix Register */
193#define SPRN_HASH1 0x3D2 /* Primary Hash Address Register */
194#define SPRN_HASH2 0x3D3 /* Secondary Hash Address Resgister */
195#define SPRN_HID0 0x3F0 /* Hardware Implementation Register 0 */
196#define HID0_EMCP (1<<31) /* Enable Machine Check pin */
197#define HID0_EBA (1<<29) /* Enable Bus Address Parity */
198#define HID0_EBD (1<<28) /* Enable Bus Data Parity */
199#define HID0_SBCLK (1<<27)
200#define HID0_EICE (1<<26)
201#define HID0_ECLK (1<<25)
202#define HID0_PAR (1<<24)
203#define HID0_DOZE (1<<23)
204#define HID0_NAP (1<<22)
205#define HID0_SLEEP (1<<21)
206#define HID0_DPM (1<<20)
207#define HID0_ICE (1<<15) /* Instruction Cache Enable */
208#define HID0_DCE (1<<14) /* Data Cache Enable */
209#define HID0_ILOCK (1<<13) /* Instruction Cache Lock */
210#define HID0_DLOCK (1<<12) /* Data Cache Lock */
211#define HID0_ICFI (1<<11) /* Instr. Cache Flash Invalidate */
212#define HID0_DCI (1<<10) /* Data Cache Invalidate */
213#define HID0_SPD (1<<9) /* Speculative disable */
214#define HID0_SGE (1<<7) /* Store Gathering Enable */
215#define HID0_SIED (1<<7) /* Serial Instr. Execution [Disable] */
216#define HID0_BTIC (1<<5) /* Branch Target Instruction Cache Enable */
217#define HID0_ABE (1<<3) /* Address Broadcast Enable */
218#define HID0_BHTE (1<<2) /* Branch History Table Enable */
219#define HID0_BTCD (1<<1) /* Branch target cache disable */
220#define SPRN_MSRDORM 0x3F1 /* Hardware Implementation Register 1 */
221#define SPRN_HID1 0x3F1 /* Hardware Implementation Register 1 */
222#define SPRN_IABR 0x3F2 /* Instruction Address Breakpoint Register */
223#define SPRN_NIADORM 0x3F3 /* Hardware Implementation Register 2 */
224#define SPRN_HID4 0x3F4 /* 970 HID4 */
225#define SPRN_HID5 0x3F6 /* 970 HID5 */
226#define SPRN_TSC 0x3FD /* Thread switch control */
227#define SPRN_TST 0x3FC /* Thread switch timeout */
228#define SPRN_IAC1 0x3F4 /* Instruction Address Compare 1 */
229#define SPRN_IAC2 0x3F5 /* Instruction Address Compare 2 */
230#define SPRN_ICCR 0x3FB /* Instruction Cache Cacheability Register */
231#define ICCR_NOCACHE 0 /* Noncacheable */
232#define ICCR_CACHE 1 /* Cacheable */
233#define SPRN_ICDBDR 0x3D3 /* Instruction Cache Debug Data Register */
234#define SPRN_ICMP 0x3D5 /* Instruction TLB Compare Register */
235#define SPRN_ICTC 0x3FB /* Instruction Cache Throttling Control Reg */
236#define SPRN_IMISS 0x3D4 /* Instruction TLB Miss Register */
237#define SPRN_IMMR 0x27E /* Internal Memory Map Register */
238#define SPRN_L2CR 0x3F9 /* Level 2 Cache Control Regsiter */
239#define SPRN_LR 0x008 /* Link Register */
240#define SPRN_PBL1 0x3FC /* Protection Bound Lower 1 */
241#define SPRN_PBL2 0x3FE /* Protection Bound Lower 2 */
242#define SPRN_PBU1 0x3FD /* Protection Bound Upper 1 */
243#define SPRN_PBU2 0x3FF /* Protection Bound Upper 2 */
244#define SPRN_PID 0x3B1 /* Process ID */
245#define SPRN_PIR 0x3FF /* Processor Identification Register */
246#define SPRN_PIT 0x3DB /* Programmable Interval Timer */
247#define SPRN_PURR 0x135 /* Processor Utilization of Resources Register */
248#define SPRN_PVR 0x11F /* Processor Version Register */
249#define SPRN_RPA 0x3D6 /* Required Physical Address Register */
250#define SPRN_SDA 0x3BF /* Sampled Data Address Register */
251#define SPRN_SDR1 0x019 /* MMU Hash Base Register */
252#define SPRN_SGR 0x3B9 /* Storage Guarded Register */
253#define SGR_NORMAL 0
254#define SGR_GUARDED 1
255#define SPRN_SIA 0x3BB /* Sampled Instruction Address Register */
256#define SPRN_SPRG0 0x110 /* Special Purpose Register General 0 */
257#define SPRN_SPRG1 0x111 /* Special Purpose Register General 1 */
258#define SPRN_SPRG2 0x112 /* Special Purpose Register General 2 */
259#define SPRN_SPRG3 0x113 /* Special Purpose Register General 3 */
260#define SPRN_SRR0 0x01A /* Save/Restore Register 0 */
261#define SPRN_SRR1 0x01B /* Save/Restore Register 1 */
262#define SPRN_TBRL 0x10C /* Time Base Read Lower Register (user, R/O) */
263#define SPRN_TBRU 0x10D /* Time Base Read Upper Register (user, R/O) */
264#define SPRN_TBWL 0x11C /* Time Base Lower Register (super, W/O) */
265#define SPRN_TBWU 0x11D /* Time Base Write Upper Register (super, W/O) */
266#define SPRN_HIOR 0x137 /* 970 Hypervisor interrupt offset */
267#define SPRN_TCR 0x3DA /* Timer Control Register */
268#define TCR_WP(x) (((x)&0x3)<<30) /* WDT Period */
269#define WP_2_17 0 /* 2^17 clocks */
270#define WP_2_21 1 /* 2^21 clocks */
271#define WP_2_25 2 /* 2^25 clocks */
272#define WP_2_29 3 /* 2^29 clocks */
273#define TCR_WRC(x) (((x)&0x3)<<28) /* WDT Reset Control */
274#define WRC_NONE 0 /* No reset will occur */
275#define WRC_CORE 1 /* Core reset will occur */
276#define WRC_CHIP 2 /* Chip reset will occur */
277#define WRC_SYSTEM 3 /* System reset will occur */
278#define TCR_WIE 0x08000000 /* WDT Interrupt Enable */
279#define TCR_PIE 0x04000000 /* PIT Interrupt Enable */
280#define TCR_FP(x) (((x)&0x3)<<24) /* FIT Period */
281#define FP_2_9 0 /* 2^9 clocks */
282#define FP_2_13 1 /* 2^13 clocks */
283#define FP_2_17 2 /* 2^17 clocks */
284#define FP_2_21 3 /* 2^21 clocks */
285#define TCR_FIE 0x00800000 /* FIT Interrupt Enable */
286#define TCR_ARE 0x00400000 /* Auto Reload Enable */
287#define SPRN_THRM1 0x3FC /* Thermal Management Register 1 */
288#define THRM1_TIN (1<<0)
289#define THRM1_TIV (1<<1)
290#define THRM1_THRES (0x7f<<2)
291#define THRM1_TID (1<<29)
292#define THRM1_TIE (1<<30)
293#define THRM1_V (1<<31)
294#define SPRN_THRM2 0x3FD /* Thermal Management Register 2 */
295#define SPRN_THRM3 0x3FE /* Thermal Management Register 3 */
296#define THRM3_E (1<<31)
297#define SPRN_TSR 0x3D8 /* Timer Status Register */
298#define TSR_ENW 0x80000000 /* Enable Next Watchdog */
299#define TSR_WIS 0x40000000 /* WDT Interrupt Status */
300#define TSR_WRS(x) (((x)&0x3)<<28) /* WDT Reset Status */
301#define WRS_NONE 0 /* No WDT reset occurred */
302#define WRS_CORE 1 /* WDT forced core reset */
303#define WRS_CHIP 2 /* WDT forced chip reset */
304#define WRS_SYSTEM 3 /* WDT forced system reset */
305#define TSR_PIS 0x08000000 /* PIT Interrupt Status */
306#define TSR_FIS 0x04000000 /* FIT Interrupt Status */
307#define SPRN_USIA 0x3AB /* User Sampled Instruction Address Register */
308#define SPRN_XER 0x001 /* Fixed Point Exception Register */
309#define SPRN_ZPR 0x3B0 /* Zone Protection Register */
310#define SPRN_VRSAVE 0x100 /* Vector save */
311
312/* Performance monitor SPRs */
313#define SPRN_SIAR 780
314#define SPRN_SDAR 781
315#define SPRN_MMCRA 786
316#define MMCRA_SIHV 0x10000000UL /* state of MSR HV when SIAR set */
317#define MMCRA_SIPR 0x08000000UL /* state of MSR PR when SIAR set */
318#define MMCRA_SAMPLE_ENABLE 0x00000001UL /* enable sampling */
319#define SPRN_PMC1 787
320#define SPRN_PMC2 788
321#define SPRN_PMC3 789
322#define SPRN_PMC4 790
323#define SPRN_PMC5 791
324#define SPRN_PMC6 792
325#define SPRN_PMC7 793
326#define SPRN_PMC8 794
327#define SPRN_MMCR0 795
328#define MMCR0_FC 0x80000000UL /* freeze counters. set to 1 on a perfmon exception */
329#define MMCR0_FCS 0x40000000UL /* freeze in supervisor state */
330#define MMCR0_KERNEL_DISABLE MMCR0_FCS
331#define MMCR0_FCP 0x20000000UL /* freeze in problem state */
332#define MMCR0_PROBLEM_DISABLE MMCR0_FCP
333#define MMCR0_FCM1 0x10000000UL /* freeze counters while MSR mark = 1 */
334#define MMCR0_FCM0 0x08000000UL /* freeze counters while MSR mark = 0 */
335#define MMCR0_PMXE 0x04000000UL /* performance monitor exception enable */
336#define MMCR0_FCECE 0x02000000UL /* freeze counters on enabled condition or event */
337/* time base exception enable */
338#define MMCR0_TBEE 0x00400000UL /* time base exception enable */
339#define MMCR0_PMC1CE 0x00008000UL /* PMC1 count enable*/
340#define MMCR0_PMCjCE 0x00004000UL /* PMCj count enable*/
341#define MMCR0_TRIGGER 0x00002000UL /* TRIGGER enable */
342#define MMCR0_PMAO 0x00000080UL /* performance monitor alert has occurred, set to 0 after handling exception */
343#define MMCR0_SHRFC 0x00000040UL /* SHRre freeze conditions between threads */
344#define MMCR0_FCTI 0x00000008UL /* freeze counters in tags inactive mode */
345#define MMCR0_FCTA 0x00000004UL /* freeze counters in tags active mode */
346#define MMCR0_FCWAIT 0x00000002UL /* freeze counter in WAIT state */
347#define MMCR0_FCHV 0x00000001UL /* freeze conditions in hypervisor mode */
348#define SPRN_MMCR1 798
349
350/* Short-hand versions for a number of the above SPRNs */
351
352#define CTR SPRN_CTR /* Counter Register */
353#define DAR SPRN_DAR /* Data Address Register */
354#define DABR SPRN_DABR /* Data Address Breakpoint Register */
355#define DCMP SPRN_DCMP /* Data TLB Compare Register */
356#define DEC SPRN_DEC /* Decrement Register */
357#define DMISS SPRN_DMISS /* Data TLB Miss Register */
358#define DSISR SPRN_DSISR /* Data Storage Interrupt Status Register */
359#define EAR SPRN_EAR /* External Address Register */
360#define HASH1 SPRN_HASH1 /* Primary Hash Address Register */
361#define HASH2 SPRN_HASH2 /* Secondary Hash Address Register */
362#define HID0 SPRN_HID0 /* Hardware Implementation Register 0 */
363#define MSRDORM SPRN_MSRDORM /* MSR Dormant Register */
364#define NIADORM SPRN_NIADORM /* NIA Dormant Register */
365#define TSC SPRN_TSC /* Thread switch control */
366#define TST SPRN_TST /* Thread switch timeout */
367#define IABR SPRN_IABR /* Instruction Address Breakpoint Register */
368#define ICMP SPRN_ICMP /* Instruction TLB Compare Register */
369#define IMISS SPRN_IMISS /* Instruction TLB Miss Register */
370#define IMMR SPRN_IMMR /* PPC 860/821 Internal Memory Map Register */
371#define L2CR SPRN_L2CR /* PPC 750 L2 control register */
372#define __LR SPRN_LR
373#define PVR SPRN_PVR /* Processor Version */
374#define PIR SPRN_PIR /* Processor ID */
375#define PURR SPRN_PURR /* Processor Utilization of Resource Register */
376//#define RPA SPRN_RPA /* Required Physical Address Register */
377#define SDR1 SPRN_SDR1 /* MMU hash base register */
378#define SPR0 SPRN_SPRG0 /* Supervisor Private Registers */
379#define SPR1 SPRN_SPRG1
380#define SPR2 SPRN_SPRG2
381#define SPR3 SPRN_SPRG3
382#define SPRG0 SPRN_SPRG0
383#define SPRG1 SPRN_SPRG1
384#define SPRG2 SPRN_SPRG2
385#define SPRG3 SPRN_SPRG3
386#define SRR0 SPRN_SRR0 /* Save and Restore Register 0 */
387#define SRR1 SPRN_SRR1 /* Save and Restore Register 1 */
388#define TBRL SPRN_TBRL /* Time Base Read Lower Register */
389#define TBRU SPRN_TBRU /* Time Base Read Upper Register */
390#define TBWL SPRN_TBWL /* Time Base Write Lower Register */
391#define TBWU SPRN_TBWU /* Time Base Write Upper Register */
392#define ICTC 1019
393#define THRM1 SPRN_THRM1 /* Thermal Management Register 1 */
394#define THRM2 SPRN_THRM2 /* Thermal Management Register 2 */
395#define THRM3 SPRN_THRM3 /* Thermal Management Register 3 */
396#define XER SPRN_XER
397
398/* Processor Version Register (PVR) field extraction */
399
400#define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
401#define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
402
403/* Processor Version Numbers */
404#define PV_NORTHSTAR 0x0033
405#define PV_PULSAR 0x0034
406#define PV_POWER4 0x0035
407#define PV_ICESTAR 0x0036
408#define PV_SSTAR 0x0037
409#define PV_POWER4p 0x0038
410#define PV_970 0x0039
411#define PV_POWER5 0x003A
412#define PV_POWER5p 0x003B
413#define PV_970FX 0x003C
414#define PV_630 0x0040
415#define PV_630p 0x0041
416
417/* Platforms supported by PPC64 */
418#define PLATFORM_PSERIES 0x0100
419#define PLATFORM_PSERIES_LPAR 0x0101
420#define PLATFORM_ISERIES_LPAR 0x0201
421#define PLATFORM_LPAR 0x0001
422#define PLATFORM_POWERMAC 0x0400
423#define PLATFORM_MAPLE 0x0500
424
425/* Compatibility with drivers coming from PPC32 world */
426#define _machine (systemcfg->platform)
427#define _MACH_Pmac PLATFORM_POWERMAC
428
429/*
430 * List of interrupt controllers.
431 */
432#define IC_INVALID 0
433#define IC_OPEN_PIC 1
434#define IC_PPC_XIC 2
435
436#define XGLUE(a,b) a##b
437#define GLUE(a,b) XGLUE(a,b)
438
439/* iSeries CTRL register (for runlatch) */
440
441#define CTRLT 0x098
442#define CTRLF 0x088
443#define RUNLATCH 0x0001
444
445#ifdef __ASSEMBLY__
446
447#define _GLOBAL(name) \
448 .section ".text"; \
449 .align 2 ; \
450 .globl name; \
451 .globl GLUE(.,name); \
452 .section ".opd","aw"; \
453name: \
454 .quad GLUE(.,name); \
455 .quad .TOC.@tocbase; \
456 .quad 0; \
457 .previous; \
458 .type GLUE(.,name),@function; \
459GLUE(.,name):
460
461#define _STATIC(name) \
462 .section ".text"; \
463 .align 2 ; \
464 .section ".opd","aw"; \
465name: \
466 .quad GLUE(.,name); \
467 .quad .TOC.@tocbase; \
468 .quad 0; \
469 .previous; \
470 .type GLUE(.,name),@function; \
471GLUE(.,name):
472
473#else /* __ASSEMBLY__ */
474
475/*
476 * Default implementation of macro that returns current
477 * instruction pointer ("program counter").
478 */
479#define current_text_addr() ({ __label__ _l; _l: &&_l;})
480
481/* Macros for setting and retrieving special purpose registers */
482
483#define mfmsr() ({unsigned long rval; \
484 asm volatile("mfmsr %0" : "=r" (rval)); rval;})
485
486#define __mtmsrd(v, l) asm volatile("mtmsrd %0," __stringify(l) \
487 : : "r" (v))
488#define mtmsrd(v) __mtmsrd((v), 0)
489
490#define mfspr(rn) ({unsigned long rval; \
491 asm volatile("mfspr %0," __stringify(rn) \
492 : "=r" (rval)); rval;})
493#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
494
495#define mftb() ({unsigned long rval; \
496 asm volatile("mftb %0" : "=r" (rval)); rval;})
497
498#define mttbl(v) asm volatile("mttbl %0":: "r"(v))
499#define mttbu(v) asm volatile("mttbu %0":: "r"(v))
500
501#define mfasr() ({unsigned long rval; \
502 asm volatile("mfasr %0" : "=r" (rval)); rval;})
503
504static inline void set_tb(unsigned int upper, unsigned int lower)
505{
506 mttbl(0);
507 mttbu(upper);
508 mttbl(lower);
509}
510
511#define __get_SP() ({unsigned long sp; \
512 asm volatile("mr %0,1": "=r" (sp)); sp;})
513
514#ifdef __KERNEL__
515
516extern int have_of;
517extern u64 ppc64_interrupt_controller;
518
519struct task_struct;
520void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp);
521void release_thread(struct task_struct *);
522
523/* Prepare to copy thread state - unlazy all lazy status */
524extern void prepare_to_copy(struct task_struct *tsk);
525
526/* Create a new kernel thread. */
527extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
528
529/* Lazy FPU handling on uni-processor */
530extern struct task_struct *last_task_used_math;
531extern struct task_struct *last_task_used_altivec;
532
533/* 64-bit user address space is 41-bits (2TBs user VM) */
534#define TASK_SIZE_USER64 (0x0000020000000000UL)
535
536/*
537 * 32-bit user address space is 4GB - 1 page
538 * (this 1 page is needed so referencing of 0xFFFFFFFF generates EFAULT
539 */
540#define TASK_SIZE_USER32 (0x0000000100000000UL - (1*PAGE_SIZE))
541
542#define TASK_SIZE (test_thread_flag(TIF_32BIT) ? \
543 TASK_SIZE_USER32 : TASK_SIZE_USER64)
544
545/* This decides where the kernel will search for a free chunk of vm
546 * space during mmap's.
547 */
548#define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4))
549#define TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(TASK_SIZE_USER64 / 4))
550
551#define TASK_UNMAPPED_BASE ((test_thread_flag(TIF_32BIT)||(ppcdebugset(PPCDBG_BINFMT_32ADDR))) ? \
552 TASK_UNMAPPED_BASE_USER32 : TASK_UNMAPPED_BASE_USER64 )
553
554typedef struct {
555 unsigned long seg;
556} mm_segment_t;
557
558struct thread_struct {
559 unsigned long ksp; /* Kernel stack pointer */
560 unsigned long ksp_vsid;
561 struct pt_regs *regs; /* Pointer to saved register state */
562 mm_segment_t fs; /* for get_fs() validation */
563 double fpr[32]; /* Complete floating point set */
564 unsigned long fpscr; /* Floating point status (plus pad) */
565 unsigned long fpexc_mode; /* Floating-point exception mode */
566 unsigned long start_tb; /* Start purr when proc switched in */
567 unsigned long accum_tb; /* Total accumilated purr for process */
568 unsigned long vdso_base; /* base of the vDSO library */
569#ifdef CONFIG_ALTIVEC
570 /* Complete AltiVec register set */
571 vector128 vr[32] __attribute((aligned(16)));
572 /* AltiVec status */
573 vector128 vscr __attribute((aligned(16)));
574 unsigned long vrsave;
575 int used_vr; /* set if process has used altivec */
576#endif /* CONFIG_ALTIVEC */
577};
578
579#define ARCH_MIN_TASKALIGN 16
580
581#define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
582
583#define INIT_THREAD { \
584 .ksp = INIT_SP, \
585 .regs = (struct pt_regs *)INIT_SP - 1, \
586 .fs = KERNEL_DS, \
587 .fpr = {0}, \
588 .fpscr = 0, \
589 .fpexc_mode = MSR_FE0|MSR_FE1, \
590}
591
592/*
593 * Note: the vm_start and vm_end fields here should *not*
594 * be in kernel space. (Could vm_end == vm_start perhaps?)
595 */
596#define IOREMAP_MMAP { &ioremap_mm, 0, 0x1000, NULL, \
597 PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, \
598 1, NULL, NULL }
599
600extern struct mm_struct ioremap_mm;
601
602/*
603 * Return saved PC of a blocked thread. For now, this is the "user" PC
604 */
605#define thread_saved_pc(tsk) \
606 ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
607
608unsigned long get_wchan(struct task_struct *p);
609
610#define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
611#define KSTK_ESP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->gpr[1]: 0)
612
613/* Get/set floating-point exception mode */
614#define GET_FPEXC_CTL(tsk, adr) get_fpexc_mode((tsk), (adr))
615#define SET_FPEXC_CTL(tsk, val) set_fpexc_mode((tsk), (val))
616
617extern int get_fpexc_mode(struct task_struct *tsk, unsigned long adr);
618extern int set_fpexc_mode(struct task_struct *tsk, unsigned int val);
619
620static inline unsigned int __unpack_fe01(unsigned long msr_bits)
621{
622 return ((msr_bits & MSR_FE0) >> 10) | ((msr_bits & MSR_FE1) >> 8);
623}
624
625static inline unsigned long __pack_fe01(unsigned int fpmode)
626{
627 return ((fpmode << 10) & MSR_FE0) | ((fpmode << 8) & MSR_FE1);
628}
629
630#define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0)
631
632/*
633 * Prefetch macros.
634 */
635#define ARCH_HAS_PREFETCH
636#define ARCH_HAS_PREFETCHW
637#define ARCH_HAS_SPINLOCK_PREFETCH
638
639static inline void prefetch(const void *x)
640{
641 if (unlikely(!x))
642 return;
643
644 __asm__ __volatile__ ("dcbt 0,%0" : : "r" (x));
645}
646
647static inline void prefetchw(const void *x)
648{
649 if (unlikely(!x))
650 return;
651
652 __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (x));
653}
654
655#define spin_lock_prefetch(x) prefetchw(x)
656
657#define HAVE_ARCH_PICK_MMAP_LAYOUT
658
659#endif /* __KERNEL__ */
660
661#endif /* __ASSEMBLY__ */
662
663/*
664 * Number of entries in the SLB. If this ever changes we should handle
665 * it with a use a cpu feature fixup.
666 */
667#define SLB_NUM_ENTRIES 64
668
669#endif /* __ASM_PPC64_PROCESSOR_H */