diff options
Diffstat (limited to 'include/asm-ppc64/paca.h')
| -rw-r--r-- | include/asm-ppc64/paca.h | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/include/asm-ppc64/paca.h b/include/asm-ppc64/paca.h deleted file mode 100644 index bccacd6..0000000 --- a/include/asm-ppc64/paca.h +++ /dev/null @@ -1,121 +0,0 @@ -#ifndef _PPC64_PACA_H -#define _PPC64_PACA_H - -/* - * include/asm-ppc64/paca.h - * - * This control block defines the PACA which defines the processor - * specific data for each logical processor on the system. - * There are some pointers defined that are utilized by PLIC. - * - * C 2001 PPC 64 Team, IBM Corp - * - * 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. - */ - -#include <linux/config.h> -#include <asm/types.h> -#include <asm/lppaca.h> -#include <asm/iseries/it_lp_reg_save.h> -#include <asm/mmu.h> - -register struct paca_struct *local_paca asm("r13"); -#define get_paca() local_paca - -struct task_struct; - -/* - * Defines the layout of the paca. - * - * This structure is not directly accessed by firmware or the service - * processor except for the first two pointers that point to the - * lppaca area and the ItLpRegSave area for this CPU. Both the - * lppaca and ItLpRegSave objects are currently contained within the - * PACA but they do not need to be. - */ -struct paca_struct { - /* - * Because hw_cpu_id, unlike other paca fields, is accessed - * routinely from other CPUs (from the IRQ code), we stick to - * read-only (after boot) fields in the first cacheline to - * avoid cacheline bouncing. - */ - - /* - * MAGIC: These first two pointers can't be moved - they're - * accessed by the firmware - */ - struct lppaca *lppaca_ptr; /* Pointer to LpPaca for PLIC */ - struct ItLpRegSave *reg_save_ptr; /* Pointer to LpRegSave for PLIC */ - - /* - * MAGIC: the spinlock functions in arch/ppc64/lib/locks.c - * load lock_token and paca_index with a single lwz - * instruction. They must travel together and be properly - * aligned. - */ - u16 lock_token; /* Constant 0x8000, used in locks */ - u16 paca_index; /* Logical processor number */ - - u32 default_decr; /* Default decrementer value */ - u64 kernel_toc; /* Kernel TOC address */ - u64 stab_real; /* Absolute address of segment table */ - u64 stab_addr; /* Virtual address of segment table */ - void *emergency_sp; /* pointer to emergency stack */ - s16 hw_cpu_id; /* Physical processor number */ - u8 cpu_start; /* At startup, processor spins until */ - /* this becomes non-zero. */ - - /* - * Now, starting in cacheline 2, the exception save areas - */ - /* used for most interrupts/exceptions */ - u64 exgen[10] __attribute__((aligned(0x80))); - u64 exmc[10]; /* used for machine checks */ - u64 exslb[10]; /* used for SLB/segment table misses - * on the linear mapping */ -#ifdef CONFIG_PPC_64K_PAGES - pgd_t *pgdir; -#endif /* CONFIG_PPC_64K_PAGES */ - - mm_context_t context; - u16 slb_cache[SLB_CACHE_ENTRIES]; - u16 slb_cache_ptr; - - /* - * then miscellaneous read-write fields - */ - struct task_struct *__current; /* Pointer to current */ - u64 kstack; /* Saved Kernel stack addr */ - u64 stab_rr; /* stab/slb round-robin counter */ - u64 next_jiffy_update_tb; /* TB value for next jiffy update */ - u64 saved_r1; /* r1 save for RTAS calls */ - u64 saved_msr; /* MSR saved here by enter_rtas */ - u8 proc_enabled; /* irq soft-enable flag */ - - /* not yet used */ - u64 exdsi[8]; /* used for linear mapping hash table misses */ - - /* - * iSeries structure which the hypervisor knows about - - * this structure should not cross a page boundary. - * The vpa_init/register_vpa call is now known to fail if the - * lppaca structure crosses a page boundary. - * The lppaca is also used on POWER5 pSeries boxes. - * The lppaca is 640 bytes long, and cannot readily change - * since the hypervisor knows its layout, so a 1kB - * alignment will suffice to ensure that it doesn't - * cross a page boundary. - */ - struct lppaca lppaca __attribute__((__aligned__(0x400))); -#ifdef CONFIG_PPC_ISERIES - struct ItLpRegSave reg_save; -#endif -}; - -extern struct paca_struct paca[]; - -#endif /* _PPC64_PACA_H */ |
