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Diffstat (limited to 'arch/tile/mm/migrate_64.S')
| -rw-r--r-- | arch/tile/mm/migrate_64.S | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/arch/tile/mm/migrate_64.S b/arch/tile/mm/migrate_64.S deleted file mode 100644 index a49eee38f872..000000000000 --- a/arch/tile/mm/migrate_64.S +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright 2011 Tilera Corporation. All Rights Reserved. - * - * 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, version 2. - * - * 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, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - * - * This routine is a helper for migrating the home of a set of pages to - * a new cpu. See the documentation in homecache.c for more information. - */ - -#include <linux/linkage.h> -#include <linux/threads.h> -#include <asm/page.h> -#include <asm/thread_info.h> -#include <asm/types.h> -#include <asm/asm-offsets.h> -#include <hv/hypervisor.h> - - .text - -/* - * First, some definitions that apply to all the code in the file. - */ - -/* Locals (caller-save) */ -#define r_tmp r10 -#define r_save_sp r11 - -/* What we save where in the stack frame; must include all callee-saves. */ -#define FRAME_SP 8 -#define FRAME_R30 16 -#define FRAME_R31 24 -#define FRAME_R32 32 -#define FRAME_SIZE 40 - - - - -/* - * On entry: - * - * r0 the new context PA to install (moved to r_context) - * r1 PTE to use for context access (moved to r_access) - * r2 ASID to use for new context (moved to r_asid) - * r3 pointer to cpumask with just this cpu set in it (r_my_cpumask) - */ - -/* Arguments (caller-save) */ -#define r_context_in r0 -#define r_access_in r1 -#define r_asid_in r2 -#define r_my_cpumask r3 - -/* Locals (callee-save); must not be more than FRAME_xxx above. */ -#define r_context r30 -#define r_access r31 -#define r_asid r32 - -/* - * Caller-save locals and frame constants are the same as - * for homecache_migrate_stack_and_flush. - */ - -STD_ENTRY(flush_and_install_context) - /* - * Create a stack frame; we can't touch it once we flush the - * cache until we install the new page table and flush the TLB. - */ - { - move r_save_sp, sp - st sp, lr - addi sp, sp, -FRAME_SIZE - } - addi r_tmp, sp, FRAME_SP - { - st r_tmp, r_save_sp - addi r_tmp, sp, FRAME_R30 - } - { - st r_tmp, r30 - addi r_tmp, sp, FRAME_R31 - } - { - st r_tmp, r31 - addi r_tmp, sp, FRAME_R32 - } - st r_tmp, r32 - - /* Move some arguments to callee-save registers. */ - { - move r_context, r_context_in - move r_access, r_access_in - } - move r_asid, r_asid_in - - /* First, flush our L2 cache. */ - { - move r0, zero /* cache_pa */ - moveli r1, hw2_last(HV_FLUSH_EVICT_L2) /* cache_control */ - } - { - shl16insli r1, r1, hw1(HV_FLUSH_EVICT_L2) - move r2, r_my_cpumask /* cache_cpumask */ - } - { - shl16insli r1, r1, hw0(HV_FLUSH_EVICT_L2) - move r3, zero /* tlb_va */ - } - { - move r4, zero /* tlb_length */ - move r5, zero /* tlb_pgsize */ - } - { - move r6, zero /* tlb_cpumask */ - move r7, zero /* asids */ - } - { - move r8, zero /* asidcount */ - jal _hv_flush_remote - } - bnez r0, 1f - - /* Now install the new page table. */ - { - move r0, r_context - move r1, r_access - } - { - move r2, r_asid - moveli r3, HV_CTX_DIRECTIO | CTX_PAGE_FLAG - } - jal _hv_install_context - bnez r0, 1f - - /* Finally, flush the TLB. */ - { - movei r0, 0 /* preserve_global */ - jal hv_flush_all - } - -1: /* Restore the callee-saved registers and return. */ - addli lr, sp, FRAME_SIZE - { - ld lr, lr - addli r_tmp, sp, FRAME_R30 - } - { - ld r30, r_tmp - addli r_tmp, sp, FRAME_R31 - } - { - ld r31, r_tmp - addli r_tmp, sp, FRAME_R32 - } - { - ld r32, r_tmp - addi sp, sp, FRAME_SIZE - } - jrp lr - STD_ENDPROC(flush_and_install_context) |