| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* NG4copy_page.S: Niagara-4 optimized clear page. |
| * |
| * Copyright (C) 2012 (davem@davemloft.net) |
| */ |
| |
| #include <asm/asi.h> |
| #include <asm/page.h> |
| |
| .text |
| |
| .register %g3, #scratch |
| |
| .align 32 |
| .globl NG4clear_page |
| .globl NG4clear_user_page |
| NG4clear_page: /* %o0=dest */ |
| NG4clear_user_page: /* %o0=dest, %o1=vaddr */ |
| set PAGE_SIZE, %g7 |
| mov 0x20, %g3 |
| 1: stxa %g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P |
| subcc %g7, 0x40, %g7 |
| stxa %g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P |
| bne,pt %xcc, 1b |
| add %o0, 0x40, %o0 |
| membar #StoreLoad|#StoreStore |
| retl |
| nop |
| .size NG4clear_page,.-NG4clear_page |
| .size NG4clear_user_page,.-NG4clear_user_page |
