1ae2c6ca6SDavid S. Miller/* SPDX-License-Identifier: GPL-2.0 */ 2ae2c6ca6SDavid S. Miller/* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant. 3ae2c6ca6SDavid S. Miller * 4ae2c6ca6SDavid S. Miller * Copyright (C) 2012 David S. Miller <[email protected]> 5ae2c6ca6SDavid S. Miller */ 6*46ad8d2dSVijay Kumar 7*46ad8d2dSVijay Kumar#include <linux/linkage.h> 8ae2c6ca6SDavid S. Miller 9ae2c6ca6SDavid S. Miller#define BRANCH_ALWAYS 0x10680000 10ae2c6ca6SDavid S. Miller#define NOP 0x01000000 11ae2c6ca6SDavid S. Miller#define NG_DO_PATCH(OLD, NEW) \ 12ae2c6ca6SDavid S. Miller sethi %hi(NEW), %g1; \ 13ae2c6ca6SDavid S. Miller or %g1, %lo(NEW), %g1; \ 14ae2c6ca6SDavid S. Miller sethi %hi(OLD), %g2; \ 15ae2c6ca6SDavid S. Miller or %g2, %lo(OLD), %g2; \ 16ae2c6ca6SDavid S. Miller sub %g1, %g2, %g1; \ 17ae2c6ca6SDavid S. Miller sethi %hi(BRANCH_ALWAYS), %g3; \ 18ae2c6ca6SDavid S. Miller sll %g1, 11, %g1; \ 19ae2c6ca6SDavid S. Miller srl %g1, 11 + 2, %g1; \ 20ae2c6ca6SDavid S. Miller or %g3, %lo(BRANCH_ALWAYS), %g3; \ 21ae2c6ca6SDavid S. Miller or %g3, %g1, %g3; \ 22ae2c6ca6SDavid S. Miller stw %g3, [%g2]; \ 23ae2c6ca6SDavid S. Miller sethi %hi(NOP), %g3; \ 24ae2c6ca6SDavid S. Miller or %g3, %lo(NOP), %g3; \ 25ae2c6ca6SDavid S. Miller stw %g3, [%g2 + 0x4]; \ 26ae2c6ca6SDavid S. Miller flush %g2; 27ae2c6ca6SDavid S. Miller 28ae2c6ca6SDavid S. Miller .globl niagara4_patch_copyops 29ae2c6ca6SDavid S. Miller .type niagara4_patch_copyops,#function 30ae2c6ca6SDavid S. Millerniagara4_patch_copyops: 3131af2f36SAl Viro NG_DO_PATCH(memcpy, NG4memcpy) 3231af2f36SAl Viro NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user) 33ae2c6ca6SDavid S. Miller NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user) 34ae2c6ca6SDavid S. Miller retl 35ae2c6ca6SDavid S. Miller nop 36ae2c6ca6SDavid S. Miller .size niagara4_patch_copyops,.-niagara4_patch_copyops 379f825962SDavid S. Miller 389f825962SDavid S. Miller .globl niagara4_patch_bzero 399f825962SDavid S. Miller .type niagara4_patch_bzero,#function 409f825962SDavid S. Millerniagara4_patch_bzero: 419f825962SDavid S. Miller NG_DO_PATCH(memset, NG4memset) 429f825962SDavid S. Miller NG_DO_PATCH(__bzero, NG4bzero) 439f825962SDavid S. Miller NG_DO_PATCH(__clear_user, NGclear_user) 449f825962SDavid S. Miller NG_DO_PATCH(tsb_init, NGtsb_init) 459f825962SDavid S. Miller retl 469f825962SDavid S. Miller nop 479f825962SDavid S. Miller .size niagara4_patch_bzero,.-niagara4_patch_bzero 48ae2c6ca6SDavid S. Miller 49ae2c6ca6SDavid S. Miller .globl niagara4_patch_pageops 50ae2c6ca6SDavid S. Miller .type niagara4_patch_pageops,#function 51ae2c6ca6SDavid S. Millerniagara4_patch_pageops: 529f825962SDavid S. Miller NG_DO_PATCH(copy_user_page, NG4copy_user_page) 539f825962SDavid S. Miller NG_DO_PATCH(_clear_page, NG4clear_page) 54ae2c6ca6SDavid S. Miller NG_DO_PATCH(clear_user_page, NG4clear_user_page) 55ae2c6ca6SDavid S. Miller retl 56ae2c6ca6SDavid S. Miller nop 57*46ad8d2dSVijay Kumar .size niagara4_patch_pageops,.-niagara4_patch_pageops 58*46ad8d2dSVijay Kumar 59*46ad8d2dSVijay KumarENTRY(niagara4_patch_fls) 60*46ad8d2dSVijay Kumar NG_DO_PATCH(fls, NG4fls) 61*46ad8d2dSVijay Kumar NG_DO_PATCH(__fls, __NG4fls) 62*46ad8d2dSVijay Kumar retl 63*46ad8d2dSVijay Kumar nop 64ENDPROC(niagara4_patch_fls) 65