| Konstantin Porotchkin | 5e7b087 | 2016-12-04 18:34:13 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 Marvell International Ltd. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0 |
| 5 | * https://spdx.org/licenses |
| 6 | */ |
| 7 | |
| 8 | #include <asm/arch-armada8k/cache_llc.h> |
| 9 | #include <linux/linkage.h> |
| 10 | |
| 11 | /* |
| 12 | * int __asm_flush_l3_dcache |
| 13 | * |
| 14 | * flush Armada-8K last level cache. |
| 15 | * |
| 16 | */ |
| 17 | ENTRY(__asm_flush_l3_dcache) |
| 18 | /* flush cache */ |
| 19 | mov x0, #LLC_BASE_ADDR |
| 20 | add x0, x0, #LLC_FLUSH_BY_WAY |
| 21 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 22 | mov w1, #LLC_WAY_MASK |
| 23 | str w1, [x0] |
| 24 | /* sync cache */ |
| 25 | mov x0, #LLC_BASE_ADDR |
| 26 | add x0, x0, #LLC_CACHE_SYNC |
| 27 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 28 | str wzr, [x0] |
| 29 | /* check that cache sync completed */ |
| 30 | mov x0, #LLC_BASE_ADDR |
| 31 | add x0, x0, #LLC_CACHE_SYNC_COMPLETE |
| 32 | movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 |
| 33 | 1: ldr w1, [x0] |
| 34 | and w1, w1, #LLC_CACHE_SYNC_MASK |
| 35 | cbnz w1, 1b |
| 36 | /* return success */ |
| 37 | mov x0, #0 |
| 38 | ret |
| 39 | ENDPROC(__asm_flush_l3_dcache) |