11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * lppaca.h 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2001 Mike Corrigan IBM Corporation 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 198882a4da1c932c9f311c9f739e6719adea3e25d9David Gibson#ifndef _ASM_POWERPC_LPPACA_H 208882a4da1c932c9f311c9f739e6719adea3e25d9David Gibson#define _ASM_POWERPC_LPPACA_H 2188ced0314938814e1772b4d0d7ab20c52e4472b6Arnd Bergmann#ifdef __KERNEL__ 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2359c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard/* 2459c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * These definitions relate to hypervisors that only exist when using 25944916858a430a0627e483657d4cfa2cd2dfb4f7Benjamin Herrenschmidt * a server type processor 26944916858a430a0627e483657d4cfa2cd2dfb4f7Benjamin Herrenschmidt */ 27944916858a430a0627e483657d4cfa2cd2dfb4f7Benjamin Herrenschmidt#ifdef CONFIG_PPC_BOOK3S 28944916858a430a0627e483657d4cfa2cd2dfb4f7Benjamin Herrenschmidt 2959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard/* 3059c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * This control block contains the data that is shared between the 3159c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * hypervisor and the OS. 3259c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard */ 332f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling#include <linux/cache.h> 34f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt#include <linux/threads.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/types.h> 362f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling#include <asm/mmu.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt/* 39f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt * We only have to have statically allocated lppaca structs on 40f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt * legacy iSeries, which supports at most 64 cpus. 41f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt */ 42f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt#define NR_LPPACAS 1 43f2f6dad6ca3b06ae35a2e7b63f38158242c01531Benjamin Herrenschmidt 4459c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard/* 4559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * The Hypervisor barfs if the lppaca crosses a page boundary. A 1k 4659c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * alignment is sufficient to prevent this 4759c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard */ 48c6b3feaf5774508ab5a955a81e45ffefa3b12eaaBryan O'Sullivanstruct lppaca { 4959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* cacheline 1 contains read-only data */ 5059c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 51c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 desc; /* Eye catcher 0xD397D781 */ 52c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be16 size; /* Size of this struct */ 53f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard u8 reserved1[3]; 54f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard u8 __old_status; /* Old status, including shared proc */ 5559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved3[14]; 56c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be32 dyn_hw_node_id; /* Dynamic hardware node id */ 57c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be32 dyn_hw_proc_id; /* Dynamic hardware proc id */ 5859c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved4[56]; 5959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard volatile u8 vphn_assoc_counts[8]; /* Virtual processor home node */ 6059c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* associativity change counters */ 6159c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved5[32]; 6259c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 6359c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* cacheline 2 contains local read-write data */ 6459c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 6559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved6[48]; 6659c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 cede_latency_hint; 676e0b8bc965d25a8e0701eaca3fca5941b4f4b2b2Michael Ellerman u8 ebb_regs_in_use; 686e0b8bc965d25a8e0701eaca3fca5941b4f4b2b2Michael Ellerman u8 reserved7[6]; 6959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 dtl_enable_mask; /* Dispatch Trace Log mask */ 7059c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 donate_dedicated_cpu; /* Donate dedicated CPU cycles */ 7159c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 fpregs_in_use; 7259c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 pmcregs_in_use; 7359c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved8[28]; 74c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 wait_state_cycles; /* Wait cycles for this proc */ 7559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved9[28]; 76c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be16 slb_count; /* # of SLBs to maintain */ 7759c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 idle; /* Indicate OS is idle */ 7859c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 vmxregs_in_use; 7959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 8059c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* cacheline 3 is shared with other processors */ 8159c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 8259c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* 8359c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * This is the yield_count. An "odd" value (low bit on) means that 8459c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * the processor is yielded (either because of an OS yield or a 8559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * hypervisor preempt). An even value implies that the processor is 8659c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard * currently executing. 87733187e29576041ceccf3b82092ca900fc929170Anton Blanchard * NOTE: Even dedicated processor partitions can yield so this 88733187e29576041ceccf3b82092ca900fc929170Anton Blanchard * field cannot be used to determine if we are shared or dedicated. 8959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard */ 90c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be32 yield_count; 91c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be32 dispersion_count; /* dispatch changed physical cpu */ 92c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be64 cmo_faults; /* CMO page fault count */ 93c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be64 cmo_fault_time; /* CMO page fault time */ 9459c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved10[104]; 9559c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 9659c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard /* cacheline 4-5 */ 9759c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard 98c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 page_ins; /* CMO Hint - # page ins by OS */ 9959c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved11[148]; 100c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard volatile __be64 dtl_idx; /* Dispatch Trace Log head index */ 10159c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard u8 reserved12[96]; 102c6b3feaf5774508ab5a955a81e45ffefa3b12eaaBryan O'Sullivan} __attribute__((__aligned__(0x400))); 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1043356bb9f7ba378a6e2709f9df95f4ea52111f4dfDavid Gibsonextern struct lppaca lppaca[]; 1053356bb9f7ba378a6e2709f9df95f4ea52111f4dfDavid Gibson 10693c22703efa72c7527dbd586d1951c1f4a85fd70Paul Mackerras#define lppaca_of(cpu) (*paca[cpu].lppaca_ptr) 1078154c5d22d91cd16bd9985b0638c8957e4688d0ePaul Mackerras 1082f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling/* 109733187e29576041ceccf3b82092ca900fc929170Anton Blanchard * We are using a non architected field to determine if a partition is 110733187e29576041ceccf3b82092ca900fc929170Anton Blanchard * shared or dedicated. This currently works on both KVM and PHYP, but 111733187e29576041ceccf3b82092ca900fc929170Anton Blanchard * we will have to transition to something better. 112f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard */ 113f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard#define LPPACA_OLD_SHARED_PROC 2 114f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard 115f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchardstatic inline bool lppaca_shared_proc(struct lppaca *l) 116f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard{ 117733187e29576041ceccf3b82092ca900fc929170Anton Blanchard return !!(l->__old_status & LPPACA_OLD_SHARED_PROC); 118f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard} 119f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard 120f13c13a005127b5dc5daaca190277a062d946e63Anton Blanchard/* 1212f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling * SLB shadow buffer structure as defined in the PAPR. The save_area 1222f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling * contains adjacent ESID and VSID pairs for each shadowed SLB. The 1232f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling * ESID is stored in the lower 64bits, then the VSID. 1242f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling */ 1252f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neulingstruct slb_shadow { 126c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 persistent; /* Number of persistent SLBs */ 127c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 buffer_length; /* Total shadow buffer length */ 128c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 reserved; 1292f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling struct { 130c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 esid; 131c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 vsid; 13259c19cb2f6a7928a2fd3afd22bfe988e025b41d8Anton Blanchard } save_area[SLB_NUM_BOLTED]; 1332f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling} ____cacheline_aligned; 1342f6093c84730b4bad65bcd0f2f904a5769b1dfc5Michael Neuling 135cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras/* 136cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras * Layout of entries in the hypervisor's dispatch trace log buffer. 137cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras */ 138cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerrasstruct dtl_entry { 139cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras u8 dispatch_reason; 140cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras u8 preempt_reason; 141c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be16 processor_id; 142c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 enqueue_to_dispatch_time; 143c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 ready_to_enqueue_time; 144c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be32 waiting_to_ready_time; 145c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 timebase; 146c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 fault_addr; 147c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 srr0; 148c72cd555e828b710bce8c3635254dbb483397142Anton Blanchard __be64 srr1; 149cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras}; 150cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras 151cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */ 152cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry)) 153cf9efce0ce3136fa076f53e53154e98455229514Paul Mackerras 154af442a1baa6d00117cc7e7377ce7e6a545268684Nishanth Aravamudanextern struct kmem_cache *dtl_cache; 155af442a1baa6d00117cc7e7377ce7e6a545268684Nishanth Aravamudan 156872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras/* 157abf917cd91cbb73952758f9741e2fa65002a48eeFrederic Weisbecker * When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE = y, the cpu accounting code controls 158872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras * reading from the dispatch trace log. If other code wants to consume 159872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras * DTL entries, it can set this pointer to a function that will get 160872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras * called once for each DTL entry that gets processed. 161872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras */ 162872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerrasextern void (*dtl_consumer)(struct dtl_entry *entry, u64 index); 163872e439a45ed4a4bd499bc55cb0dffa74027f749Paul Mackerras 164944916858a430a0627e483657d4cfa2cd2dfb4f7Benjamin Herrenschmidt#endif /* CONFIG_PPC_BOOK3S */ 16588ced0314938814e1772b4d0d7ab20c52e4472b6Arnd Bergmann#endif /* __KERNEL__ */ 1668882a4da1c932c9f311c9f739e6719adea3e25d9David Gibson#endif /* _ASM_POWERPC_LPPACA_H */ 167