| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * This file contains low-level assembler routines for managing |
| * the PowerPC 603 tlb invalidation. |
| */ |
| |
| #include <asm/page.h> |
| #include <asm/ppc_asm.h> |
| #include <asm/asm-offsets.h> |
| |
| /* |
| * Flush an entry from the TLB |
| */ |
| #ifdef CONFIG_SMP |
| _GLOBAL(_tlbie) |
| lwz r8,TASK_CPU(r2) |
| oris r8,r8,11 |
| mfmsr r10 |
| rlwinm r0,r10,0,17,15 /* clear bit 16 (MSR_EE) */ |
| rlwinm r0,r0,0,28,26 /* clear DR */ |
| mtmsr r0 |
| isync |
| lis r9,mmu_hash_lock@h |
| ori r9,r9,mmu_hash_lock@l |
| tophys(r9,r9) |
| 10: lwarx r7,0,r9 |
| cmpwi 0,r7,0 |
| bne- 10b |
| stwcx. r8,0,r9 |
| bne- 10b |
| eieio |
| tlbie r3 |
| sync |
| TLBSYNC |
| li r0,0 |
| stw r0,0(r9) /* clear mmu_hash_lock */ |
| mtmsr r10 |
| isync |
| blr |
| _ASM_NOKPROBE_SYMBOL(_tlbie) |
| #endif /* CONFIG_SMP */ |
| |
| /* |
| * Flush the entire TLB. 603/603e only |
| */ |
| _GLOBAL(_tlbia) |
| #if defined(CONFIG_SMP) |
| lwz r8,TASK_CPU(r2) |
| oris r8,r8,10 |
| mfmsr r10 |
| rlwinm r0,r10,0,17,15 /* clear bit 16 (MSR_EE) */ |
| rlwinm r0,r0,0,28,26 /* clear DR */ |
| mtmsr r0 |
| isync |
| lis r9,mmu_hash_lock@h |
| ori r9,r9,mmu_hash_lock@l |
| tophys(r9,r9) |
| 10: lwarx r7,0,r9 |
| cmpwi 0,r7,0 |
| bne- 10b |
| stwcx. r8,0,r9 |
| bne- 10b |
| #endif /* CONFIG_SMP */ |
| li r5, 32 |
| lis r4, KERNELBASE@h |
| mtctr r5 |
| sync |
| 0: tlbie r4 |
| addi r4, r4, 0x1000 |
| bdnz 0b |
| sync |
| #ifdef CONFIG_SMP |
| TLBSYNC |
| li r0,0 |
| stw r0,0(r9) /* clear mmu_hash_lock */ |
| mtmsr r10 |
| isync |
| #endif /* CONFIG_SMP */ |
| blr |
| _ASM_NOKPROBE_SYMBOL(_tlbia) |
