| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| David S. Miller | 74bf431 | 2006-01-31 18:29:18 -0800 | [diff] [blame] | 2 | /* DTLB ** ICACHE line 1: Context 0 check and TSB load */ |
| 3 | ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer |
| 4 | ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET |
| 5 | srlx %g6, 48, %g5 ! Get context |
| David S. Miller | 8b23427 | 2006-02-17 18:01:02 -0800 | [diff] [blame] | 6 | sllx %g6, 22, %g6 ! Zero out context |
| David S. Miller | 74bf431 | 2006-01-31 18:29:18 -0800 | [diff] [blame] | 7 | brz,pn %g5, kvmap_dtlb ! Context 0 processing |
| David S. Miller | 8b23427 | 2006-02-17 18:01:02 -0800 | [diff] [blame] | 8 | srlx %g6, 22, %g6 ! Delay slot |
| David S. Miller | 517af33 | 2006-02-01 15:55:21 -0800 | [diff] [blame] | 9 | TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry |
| David S. Miller | 74bf431 | 2006-01-31 18:29:18 -0800 | [diff] [blame] | 10 | cmp %g4, %g6 ! Compare TAG |
| 11 | |
| 12 | /* DTLB ** ICACHE line 2: TSB compare and TLB load */ |
| 13 | bne,pn %xcc, tsb_miss_dtlb ! Miss |
| 14 | mov FAULT_CODE_DTLB, %g3 |
| 15 | stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB |
| 16 | retry ! Trap done |
| 17 | nop |
| 18 | nop |
| 19 | nop |
| 20 | nop |
| 21 | |
| 22 | /* DTLB ** ICACHE line 3: */ |
| 23 | nop |
| 24 | nop |
| 25 | nop |
| 26 | nop |
| 27 | nop |
| 28 | nop |
| 29 | nop |
| 30 | nop |
| 31 | |
| 32 | /* DTLB ** ICACHE line 4: */ |
| 33 | nop |
| 34 | nop |
| 35 | nop |
| 36 | nop |
| 37 | nop |
| 38 | nop |
| 39 | nop |
| 40 | nop |