| Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Konstantin Porotchkin | 5e7b087 | 2016-12-04 18:34:13 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2016 Marvell International Ltd. |
| Konstantin Porotchkin | 5e7b087 | 2016-12-04 18:34:13 +0200 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #include <asm/arch-armada8k/cache_llc.h> |
| 7 | #include <linux/linkage.h> |
| 8 | |
| 9 | /* |
| 10 | * int __asm_flush_l3_dcache |
| 11 | * |
| 12 | * flush Armada-8K last level cache. |
| 13 | * |
| 14 | */ |
| 15 | ENTRY(__asm_flush_l3_dcache) |
| 16 | /* flush cache */ |
| 17 | mov x0, #LLC_BASE_ADDR |
| 18 | add x0, x0, #LLC_FLUSH_BY_WAY |
| 19 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 20 | mov w1, #LLC_WAY_MASK |
| 21 | str w1, [x0] |
| 22 | /* sync cache */ |
| 23 | mov x0, #LLC_BASE_ADDR |
| 24 | add x0, x0, #LLC_CACHE_SYNC |
| 25 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 26 | str wzr, [x0] |
| 27 | /* check that cache sync completed */ |
| 28 | mov x0, #LLC_BASE_ADDR |
| 29 | add x0, x0, #LLC_CACHE_SYNC_COMPLETE |
| 30 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 31 | 1: ldr w1, [x0] |
| 32 | and w1, w1, #LLC_CACHE_SYNC_MASK |
| 33 | cbnz w1, 1b |
| 34 | /* return success */ |
| 35 | mov x0, #0 |
| 36 | ret |
| 37 | ENDPROC(__asm_flush_l3_dcache) |