mirror of https://gitee.com/openkylin/linux.git
158 lines
4.7 KiB
C
158 lines
4.7 KiB
C
/*
|
|
* lppaca.h
|
|
* Copyright (C) 2001 Mike Corrigan IBM Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef _ASM_POWERPC_LPPACA_H
|
|
#define _ASM_POWERPC_LPPACA_H
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* These definitions relate to hypervisors that only exist when using
|
|
* a server type processor
|
|
*/
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
|
|
/*
|
|
* This control block contains the data that is shared between the
|
|
* hypervisor and the OS.
|
|
*/
|
|
#include <linux/cache.h>
|
|
#include <linux/threads.h>
|
|
#include <asm/types.h>
|
|
#include <asm/mmu.h>
|
|
|
|
/*
|
|
* We only have to have statically allocated lppaca structs on
|
|
* legacy iSeries, which supports at most 64 cpus.
|
|
*/
|
|
#define NR_LPPACAS 1
|
|
|
|
/*
|
|
* The Hypervisor barfs if the lppaca crosses a page boundary. A 1k
|
|
* alignment is sufficient to prevent this
|
|
*/
|
|
struct lppaca {
|
|
/* cacheline 1 contains read-only data */
|
|
|
|
u32 desc; /* Eye catcher 0xD397D781 */
|
|
u16 size; /* Size of this struct */
|
|
u16 reserved1;
|
|
u16 reserved2:14;
|
|
u8 shared_proc:1; /* Shared processor indicator */
|
|
u8 secondary_thread:1; /* Secondary thread indicator */
|
|
u8 reserved3[14];
|
|
volatile u32 dyn_hw_node_id; /* Dynamic hardware node id */
|
|
volatile u32 dyn_hw_proc_id; /* Dynamic hardware proc id */
|
|
u8 reserved4[56];
|
|
volatile u8 vphn_assoc_counts[8]; /* Virtual processor home node */
|
|
/* associativity change counters */
|
|
u8 reserved5[32];
|
|
|
|
/* cacheline 2 contains local read-write data */
|
|
|
|
u8 reserved6[48];
|
|
u8 cede_latency_hint;
|
|
u8 reserved7[7];
|
|
u8 dtl_enable_mask; /* Dispatch Trace Log mask */
|
|
u8 donate_dedicated_cpu; /* Donate dedicated CPU cycles */
|
|
u8 fpregs_in_use;
|
|
u8 pmcregs_in_use;
|
|
u8 reserved8[28];
|
|
u64 wait_state_cycles; /* Wait cycles for this proc */
|
|
u8 reserved9[28];
|
|
u16 slb_count; /* # of SLBs to maintain */
|
|
u8 idle; /* Indicate OS is idle */
|
|
u8 vmxregs_in_use;
|
|
|
|
/* cacheline 3 is shared with other processors */
|
|
|
|
/*
|
|
* This is the yield_count. An "odd" value (low bit on) means that
|
|
* the processor is yielded (either because of an OS yield or a
|
|
* hypervisor preempt). An even value implies that the processor is
|
|
* currently executing.
|
|
* NOTE: This value will ALWAYS be zero for dedicated processors and
|
|
* will NEVER be zero for shared processors (ie, initialized to a 1).
|
|
*/
|
|
volatile u32 yield_count;
|
|
volatile u32 dispersion_count; /* dispatch changed physical cpu */
|
|
volatile u64 cmo_faults; /* CMO page fault count */
|
|
volatile u64 cmo_fault_time; /* CMO page fault time */
|
|
u8 reserved10[104];
|
|
|
|
/* cacheline 4-5 */
|
|
|
|
u32 page_ins; /* CMO Hint - # page ins by OS */
|
|
u8 reserved11[148];
|
|
volatile u64 dtl_idx; /* Dispatch Trace Log head index */
|
|
u8 reserved12[96];
|
|
} __attribute__((__aligned__(0x400)));
|
|
|
|
extern struct lppaca lppaca[];
|
|
|
|
#define lppaca_of(cpu) (*paca[cpu].lppaca_ptr)
|
|
|
|
/*
|
|
* SLB shadow buffer structure as defined in the PAPR. The save_area
|
|
* contains adjacent ESID and VSID pairs for each shadowed SLB. The
|
|
* ESID is stored in the lower 64bits, then the VSID.
|
|
*/
|
|
struct slb_shadow {
|
|
u32 persistent; /* Number of persistent SLBs */
|
|
u32 buffer_length; /* Total shadow buffer length */
|
|
u64 reserved;
|
|
struct {
|
|
u64 esid;
|
|
u64 vsid;
|
|
} save_area[SLB_NUM_BOLTED];
|
|
} ____cacheline_aligned;
|
|
|
|
extern struct slb_shadow slb_shadow[];
|
|
|
|
/*
|
|
* Layout of entries in the hypervisor's dispatch trace log buffer.
|
|
*/
|
|
struct dtl_entry {
|
|
u8 dispatch_reason;
|
|
u8 preempt_reason;
|
|
u16 processor_id;
|
|
u32 enqueue_to_dispatch_time;
|
|
u32 ready_to_enqueue_time;
|
|
u32 waiting_to_ready_time;
|
|
u64 timebase;
|
|
u64 fault_addr;
|
|
u64 srr0;
|
|
u64 srr1;
|
|
};
|
|
|
|
#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */
|
|
#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))
|
|
|
|
extern struct kmem_cache *dtl_cache;
|
|
|
|
/*
|
|
* When CONFIG_VIRT_CPU_ACCOUNTING = y, the cpu accounting code controls
|
|
* reading from the dispatch trace log. If other code wants to consume
|
|
* DTL entries, it can set this pointer to a function that will get
|
|
* called once for each DTL entry that gets processed.
|
|
*/
|
|
extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index);
|
|
|
|
#endif /* CONFIG_PPC_BOOK3S */
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_LPPACA_H */
|