mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 03:33:59 +08:00
39b8d52542
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#ifndef _ASM_SMTC_MT_H
|
|
#define _ASM_SMTC_MT_H
|
|
|
|
/*
|
|
* Definitions for SMTC multitasking on MIPS MT cores
|
|
*/
|
|
|
|
#include <asm/mips_mt.h>
|
|
|
|
/*
|
|
* System-wide SMTC status information
|
|
*/
|
|
|
|
extern unsigned int smtc_status;
|
|
|
|
#define SMTC_TLB_SHARED 0x00000001
|
|
#define SMTC_MTC_ACTIVE 0x00000002
|
|
|
|
/*
|
|
* TLB/ASID Management information
|
|
*/
|
|
|
|
#define MAX_SMTC_TLBS 2
|
|
#define MAX_SMTC_ASIDS 256
|
|
#if NR_CPUS <= 8
|
|
typedef char asiduse;
|
|
#else
|
|
#if NR_CPUS <= 16
|
|
typedef short asiduse;
|
|
#else
|
|
typedef long asiduse;
|
|
#endif
|
|
#endif
|
|
|
|
extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS];
|
|
|
|
struct mm_struct;
|
|
struct task_struct;
|
|
|
|
void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu);
|
|
|
|
void smtc_flush_tlb_asid(unsigned long asid);
|
|
extern int mipsmt_build_cpu_map(int startslot);
|
|
extern void mipsmt_prepare_cpus(void);
|
|
extern void smtc_smp_finish(void);
|
|
extern void smtc_boot_secondary(int cpu, struct task_struct *t);
|
|
extern void smtc_cpus_done(void);
|
|
|
|
/*
|
|
* Sharing the TLB between multiple VPEs means that the
|
|
* "random" index selection function is not allowed to
|
|
* select the current value of the Index register. To
|
|
* avoid additional TLB pressure, the Index registers
|
|
* are "parked" with an non-Valid value.
|
|
*/
|
|
|
|
#define PARKED_INDEX ((unsigned int)0x80000000)
|
|
|
|
/*
|
|
* Define low-level interrupt mask for IPIs, if necessary.
|
|
* By default, use SW interrupt 1, which requires no external
|
|
* hardware support, but which works only for single-core
|
|
* MIPS MT systems.
|
|
*/
|
|
#ifndef MIPS_CPU_IPI_IRQ
|
|
#define MIPS_CPU_IPI_IRQ 1
|
|
#endif
|
|
|
|
#endif /* _ASM_SMTC_MT_H */
|