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- /* 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)
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