/* SPDX-License-Identifier: GPL-2.0 */ /* * ultra.S: Don't expand these all over the place... * * Copyright (C) 1997, 2000, 2008 David S. Miller (davem@davemloft.net) */ #include <linux/pgtable.h> #include <asm/asi.h> #include <asm/page.h> #include <asm/spitfire.h> #include <asm/mmu_context.h> #include <asm/mmu.h> #include <asm/pil.h> #include <asm/head.h> #include <asm/thread_info.h> #include <asm/cacheflush.h> #include <asm/hypervisor.h> #include <asm/cpudata.h> /* Basically, most of the Spitfire vs. Cheetah madness * has to do with the fact that Cheetah does not support * IMMU flushes out of the secondary context. Someone needs * to throw a south lake birthday party for the folks * in Microelectronics who refused to fix this shit. */ /* This file is meant to be read efficiently by the CPU, not humans. * Staraj sie tego nikomu nie pierdolnac... */ .text .align 32 .globl __flush_tlb_mm __flush_tlb_mm: /* 19 insns */ /* %o0=(ctx & TAG_CONTEXT_BITS), %o1=SECONDARY_CONTEXT */ ldxa [%o1] ASI_DMMU, %g2 cmp %g2, %o0 bne,pn %icc, __spitfire_flush_tlb_mm_slow mov 0x50, %g3 stxa %g0, [%g3] ASI_DMMU_DEMAP stxa %g0, [%g3] ASI_IMMU_DEMAP sethi %hi(KERNBASE), %g3 flush %g3 retl nop nop nop nop nop nop nop nop nop nop .align 32 .globl __flush_tlb_page __flush_tlb_page: /* 22 insns */ /* %o0 = context, %o1 = vaddr */ rdpr %pstate, %g7 andn %g7, PSTATE_IE, %g2 wrpr %g2, %pstate mov SECONDARY_CONTEXT, %o4 ldxa [%o4] ASI_DMMU, %g2 stxa %o0, [%o4] ASI_DMMU andcc %o1, 1, %g0 andn %o1, 1, %o3 be,pn %icc, 1f or %o3, 0x10, %o3 stxa %g0, [%o3] ASI_IMMU_DEMAP 1: stxa %g0, [%o3] ASI_DMMU_DEMAP membar #Sync stxa %g2, [%o4] ASI_DMMU sethi %hi(KERNBASE), %o4 flush %o4 retl wrpr %g7, 0x0, %pstate nop nop nop nop .align 32 .globl __flush_tlb_pending __flush_tlb_pending: /* 27 insns */ /* %o0 = context, %o1 = nr, %o2 = vaddrs[] */ rdpr %pstate, %g7 sllx %o1, 3, %o1 andn %g7, PSTATE_IE, %g2 wrpr %g2, %pstate mov SECONDARY_CONTEXT, %o4 ldxa [%o4] ASI_DMMU, %g2 stxa %o0, [%o4] ASI_DMMU 1: sub %o1, (1 << 3), %o1 ldx [%o2 + %o1], %o3 andcc %o3, 1, %g0 andn %o3, 1, %o3 be,pn %icc, 2f or %o3, 0x10, %o3 stxa %g0, [%o3] ASI_IMMU_DEMAP 2: stxa %g0, [%o3] ASI_DMMU_DEMAP membar #Sync brnz,pt %o1, 1b nop stxa %g2, [%o4] ASI_DMMU sethi %hi(KERNBASE), %o4 flush %o4 retl wrpr %g7, 0x0, %pstate nop nop nop nop .align 32 .globl __flush_tlb_kernel_range __flush_tlb_kernel_range: /* 31 insns */ /* %o0=start, %o1=end */ cmp %o0, %o1 be,pn %xcc, 2f sub %o1, %o0, %o3 srlx %o3, 18, %o4 brnz,pn %o4, __spitfire_flush_tlb_kernel_range_slow sethi %hi(PAGE_SIZE), %o4 sub %o3, %o4, %o3 or %o0, 0x20, %o0 ! Nucleus 1: stxa %g0, [%o0 + %o3] ASI_DMMU_DEMAP stxa %g0, [%o0 + %o3] ASI_IMMU_DEMAP membar #Sync brnz,pt %o3, 1b sub %o3, %o4, %o3 2: sethi %hi(KERNBASE), %o3 flush %o3 retl nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop __spitfire_flush_tlb_kernel_range_slow: mov 63 * 8, %o4 1: ldxa [%o4] ASI_ITLB_DATA_ACCESS, %o3 andcc %o3, 0x40, %g0 /* _PAGE_L_4U */ bne,pn %xcc, 2f mov TLB_TAG_ACCESS, %o3 stxa %g0, [%o3] ASI_IMMU stxa %g0, [%o4] ASI_ITLB_DATA_ACCESS membar #Sync 2: ldxa [%o4] ASI_DTLB_DATA_ACCESS, %o3 andcc %o3, 0x40, %g0 bne,pn %xcc, 2f mov TLB_TAG_ACCESS, %o3 stxa %g0, [%o3] ASI_DMMU stxa %g0, [%o4] ASI_DTLB_DATA_ACCESS membar #Sync 2: sub %o4, 8, %o4 brgez,pt %o4, 1b nop retl nop __spitfire_flush_tlb_mm_slow: rdpr %pstate, %g1 wrpr %g1, PSTATE_IE, %pstate stxa %o0, [%o1] ASI_DMMU stxa %g0, [%g3] ASI_DMMU_DEMAP stxa %g0, [%g3] ASI_IMMU_DEMAP flush %g6 stxa %g2, [%o1] ASI_DMMU sethi %hi(KERNBASE), %o1 flush %o1 retl wrpr %g1, 0, %pstate /* * The following code flushes one page_size worth. */ .section .kprobes.text, "ax" .align 32 .globl __flush_icache_page __flush_icache_page: /* %o0 = phys_page */ srlx %o0, PAGE_SHIFT, %o0 sethi %hi(PAGE_OFFSET), %g1 sllx %o0, PAGE_SHIFT, %o0 sethi %hi(PAGE_SIZE), %g2 ldx [%g1 + %lo(PAGE_OFFSET)], %g1 add %o0, %g1, %o0 1: subcc %g2, 32, %g2 bne,pt %icc, 1b flush %o0 + %g2 retl nop #ifdef DCACHE_ALIASING_POSSIBLE #if (PAGE_SHIFT != 13) #error only page shift of 13 is supported by dcache flush #endif #define DTAG_MASK 0x3 /* This routine is Spitfire specific so the hardcoded * D-cache size and line-size are OK. */ .align 64 .globl __flush_dcache_page __flush_dcache_page: /* %o0=kaddr, %o1=flush_icache */ sethi %hi(PAGE_OFFSET), %g1 ldx [%g1 + %lo(PAGE_OFFSET)], %g1 sub %o0, %g1, %o0 ! physical address srlx %o0, 11, %o0 ! make D-cache TAG sethi %hi(1 << 14), %o2 ! D-cache size sub %o2, (1 << 5), %o2 ! D-cache line size 1: ldxa [%o2] ASI_DCACHE_TAG, %o3 ! load D-cache TAG andcc %o3, DTAG_MASK, %g0 ! Valid? be,pn %xcc, 2f ! Nope, branch andn %o3, DTAG_MASK, %o3 ! Clear valid bits cmp %o3, %o0 ! TAG match? bne,pt %xcc, 2f ! Nope, branch nop stxa %g0, [%o2] ASI_DCACHE_TAG ! Invalidate TAG membar #Sync 2: brnz,pt %o2, 1b sub %o2, (1 << 5), %o2 ! D-cache line size /* The I-cache does not snoop local stores so we * better flush that too when necessary. */ brnz,pt %o1, __flush_icache_page sllx %o0, 11, %o0 retl nop #endif /* DCACHE_ALIASING_POSSIBLE */ .previous /* Cheetah specific versions, patched at boot time. */ __cheetah_flush_tlb_mm: /* 19 insns */ rdpr %pstate, %g7 andn %g7, PSTATE_IE, %g2 wrpr %g2, 0x0, %pstate wrpr %g0, 1, %tl mov PRIMARY_CONTEXT, %o2 mov 0x40, %g3 ldxa [%o2] ASI_DMMU, %g2 srlx %g2, CTX_PGSZ1_NUC_SHIFT, %o1 sllx %o1, CTX_PGSZ1_NUC_SHIFT, %o1 or %o0, %o1, %o0 /* Preserve nucleus page size fields */ stxa %o0, [%o2] ASI_DMMU stxa %g0, [%g3] ASI_DMMU_DEMAP stxa %g0, [%g3] ASI_IMMU_DEMAP stxa %g2, [%o2] ASI_DMMU sethi %hi(KERNBASE), %o2 flush %o2 wrpr %g0, 0, %tl retl wrpr %g7, 0x0, %pstate __cheetah_flush_tlb_page: /* 22 insns */ /* %o0 = context, %o1 = vaddr */ rdpr %pstate, %g7 andn %g7, PSTATE_IE, %g2 wrpr %g2, 0x0, %pstate wrpr %g0, 1, %tl mov PRIMARY_CONTEXT, %o4 ldxa [%o4] ASI_DMMU, %g2 srlx %g2, CTX_PGSZ1_NUC_SHIFT, %o3 sllx %o3, CTX_PGSZ1_NUC_SHIFT, %o3 or %o0, %o3, %o0 /* Preserve nucleus page size fields */ stxa %o0, [%o4] ASI_DMMU andcc %o1, 1, %g0 be,pn %icc, 1f andn %o1, 1, %o3 stxa %g0, [%o3] ASI_IMMU_DEMAP 1: stxa %g0, [%o3] ASI_DMMU_DEMAP membar #Sync stxa %g2, [%o4] ASI_DMMU sethi %hi(KERNBASE), %o4 flush %o4 wrpr %g0, 0, %tl retl wrpr %g7, 0x0, %pstate __cheetah_flush_tlb_pending: /* 27 insns */ /* %o0 = context, %o1 = nr, %o2 = vaddrs[] */ rdpr %pstate, %g7 sllx %o1, 3, %o1 andn %g7, PSTATE_IE, %g2 wrpr %g2, 0x0, %pstate wrpr %g0, 1, %tl mov PRIMARY_CONTEXT, %o4 ldxa [%o4] ASI_DMMU, %g2 srlx %g2, CTX_PGSZ1_NUC_SHIFT, %o3 sllx %o3, CTX_PGSZ1_NUC_SHIFT, %o3 or %o0, %o3, %o0 /* Preserve nucleus page size fields */ stxa %o0, [%o4] ASI_DMMU 1: sub %o1, (1 << 3), %o1 ldx [%o2 + %o1], %o3 andcc %o3, 1, %g0 be,pn %icc, 2f andn %o3, 1, %o3 stxa %g0, [%o3] ASI_IMMU_DEMAP 2: stxa %g0, [%o3] ASI_DMMU_DEMAP membar #Sync brnz,pt %o1, 1b nop stxa %g2, [%o4] ASI_DMMU sethi %hi(KERNBASE), %o4 flush %o4 wrpr %g0, 0, %tl retl wrpr %g7, 0x0, %pstate __cheetah_flush_tlb_kernel_range: /* 31 insns */ /* %o0=start, %o1=end */ cmp %o0, %o1 be,pn %xcc, 2f sub %o1, %o0, %o3 srlx %o3, 18, %o4 brnz,pn %o4, 3f sethi %hi(PAGE_SIZE), %o4 sub %o3, %o4, %o3 or %o0, 0x20, %o0 ! Nucleus 1: stxa %g0, [%o0 + %o3] ASI_DMMU_DEMAP stxa %g0, [%o0 + %o3] ASI_IMMU_DEMAP membar #Sync brnz,pt %o3, 1b sub %o3, %o4, %o3 2: sethi %hi(KERNBASE), %o3 flush %o3 retl nop 3: mov 0x80, %o4 stxa %g0, [%o4] ASI_DMMU_DEMAP membar #Sync stxa %g0, [%o4] ASI_IMMU_DEMAP membar #Sync retl nop nop nop nop nop nop nop nop #ifdef DCACHE_ALIASING_POSSIBLE __cheetah_flush_dcache_page: /* 11 insns */ sethi %hi(PAGE_OFFSET), %g1 ldx [%g1 + %lo(PAGE_OFFSET)], %g1 sub %o0, %g1, %o0 sethi %hi(PAGE_SIZE), %o4 1: subcc %o4, (1 << 5), %o4 stxa %g0, [%o0 + %o4] ASI_DCACHE_INVALIDATE membar #Sync bne,pt %icc, 1b nop retl /* I-cache flush never needed on Cheetah, see callers. */ nop #endif /* DCACHE_ALIASING_POSSIBLE */ /* Hypervisor specific versions, patched at boot time. */ __hypervisor_tlb_tl0_error: save %sp, -192, %sp mov %i0, %o0 call hypervisor_tlbop_error mov %i1, %o1 ret restore __hypervisor_flush_tlb_mm: /* 19 insns */ mov %o0, %o2 /* ARG2: mmu context */ mov 0, %o0 /* ARG0: CPU lists unimplemented */ mov 0, %o1 /* ARG1: CPU lists unimplemented */ mov HV_MMU_ALL, %o3 /* ARG3: flags */ mov HV_FAST_MMU_DEMAP_CTX, %o5 ta HV_FAST_TRAP brnz,pn %o0, 1f mov HV_FAST_MMU_DEMAP_CTX, %o1 retl nop 1: sethi %hi(__hypervisor_tlb_tl0_error), %o5 jmpl %o5 + %lo(__hypervisor_tlb_tl0_error), %g0 nop nop nop nop nop nop nop __hypervisor_flush_tlb_page: /* 22 insns */ /* %o0 = context, %o1 = vaddr */ mov %o0, %g2 mov %o1, %o0 /* ARG0: vaddr + IMMU-bit */ mov %g2, %o1 /* ARG1: mmu context */ mov HV_MMU_ALL, %o2 /* ARG2: flags */ srlx %o0, PAGE_SHIFT, %o0 sllx %o0, PAGE_SHIFT, %o0 ta HV_MMU_UNMAP_ADDR_TRAP brnz,pn %o0, 1f mov HV_MMU_UNMAP_ADDR_TRAP, %o1 retl nop 1: sethi %hi(__hypervisor_tlb_tl0_error), %o2 jmpl %o2 + %lo(__hypervisor_tlb_tl0_error), %g0 nop nop nop nop nop nop nop nop nop __hypervisor_flush_tlb_pending: /* 27 insns */ /* %o0 = context, %o1 = nr, %o2 = vaddrs[] */ sllx %o1, 3, %g1 mov %o2, %g2 mov %o0, %g3 1: sub %g1, (1 << 3), %g1 ldx [%g2 + %g1], %o0 /* ARG0: vaddr + IMMU-bit */ mov %g3, %o1 /* ARG1: mmu context */ mov HV_MMU_ALL, %o2 /* ARG2: flags */ srlx %o0, PAGE_SHIFT, %o0 sllx %o0, PAGE_SHIFT, %o0 ta HV_MMU_UNMAP_ADDR_TRAP brnz,pn %o0, 1f mov HV_MMU_UNMAP_ADDR_TRAP, %o1 brnz,pt %g1, 1b nop retl nop 1: sethi %hi(__hypervisor_tlb_tl0_error), %o2 jmpl %o2 + %lo(__hypervisor_tlb_tl0_error), %g0 nop nop nop nop nop nop nop nop nop __hypervisor_flush_tlb_kernel_range: /* 31 insns */ /* %o0=start, %o1=end */ cmp %o0, %o1 be,pn %xcc, 2f sub %o1, %o0, %g2 srlx %g2, 18, %g3 brnz,pn %g3, 4f mov %o0, %g1 sethi %hi(PAGE_SIZE), %g3 sub %g2, %g3, %g2 1: add %g1, %g2, %o0 /* ARG0: virtual address */ mov 0, %o1 /* ARG1: mmu context */ mov HV_MMU_ALL, %o2 /* ARG2: flags */ ta HV_MMU_UNMAP_ADDR_TRAP brnz,pn %o0, 3f mov HV_MMU_UNMAP_ADDR_TRAP, %o1 brnz,pt %g2, 1b sub %g2, %g3, %g2 2: retl nop 3: sethi %hi(__hypervisor_tlb_tl0_error), %o2 jmpl %o2 + %lo(__hypervisor_tlb_tl0_error), %g0 nop 4: mov 0, %o0 /* ARG0: CPU lists unimplemented */ mov 0, %o1 /* ARG1: CPU lists unimplemented */ mov 0, %o2 /* ARG2: mmu context == nucleus */ mov HV_MMU_ALL, %o3 /* ARG3: flags */ mov HV_FAST_MMU_DEMAP_CTX, %o5 ta HV_FAST_TRAP brnz,pn %o0, 3b mov HV_FAST_MMU_DEMAP_CTX, %o1 retl nop #ifdef DCACHE_ALIASING_POSSIBLE /* XXX Niagara and friends have an 8K cache, so no aliasing is * XXX possible, but nothing explicit in the Hypervisor API * XXX guarantees this. */ __hypervisor_flush_dcache_page: /* 2 insns */ retl nop #endif tlb_patch_one: 1: lduw [%o1], %g1 stw %g1, [%o0] flush %o0 subcc %o2, 1, %o2 add %o1, 4, %o1 bne,pt %icc, 1b add %o0, 4, %o0 retl nop #ifdef CONFIG_SMP /* These are all called by the slaves of a cross call, at * trap level 1, with interrupts fully disabled. * * Register usage: * %g5 mm->context (all tlb flushes) * %g1 address arg 1 (tlb page and range flushes) * %g7 address arg 2 (tlb range flush only) * * %g6 scratch 1 * %g2 scratch 2 * %g3 scratch 3 * %g4 scratch 4 */ .align 32 .globl xcall_flush_tlb_mm xcall_flush_tlb_mm: /* 24 insns */ mov PRIMARY_CONTEXT, %g2 ldxa [%g2] ASI_DMMU, %g3 srlx %g3, CTX_PGSZ1_NUC_SHIFT, %g4 sllx %g4, CTX_PGSZ1_NUC_SHIFT, %g4 or %g5, %g4, %g5 /* Preserve nucleus page size fields */ stxa %g5, [%g2] ASI_DMMU mov 0x40, %g4 stxa %g0, [%g4] ASI_DMMU_DEMAP stxa %g0, [%g4] ASI_IMMU_DEMAP stxa %g3, [%g2] ASI_DMMU retry nop nop nop nop nop nop nop nop nop nop nop nop nop .globl xcall_flush_tlb_page xcall_flush_tlb_page: /* 20 insns */ /* %g5=context, %g1=vaddr */ mov PRIMARY_CONTEXT, %g4 ldxa [%g4] ASI_DMMU, %g2 srlx %g2, CTX_PGSZ1_NUC_SHIFT, %g4 sllx %g4, CTX_PGSZ1_NUC_SHIFT, %g4 or %g5, %g4, %g5 mov PRIMARY_CONTEXT, %g4 stxa %g5, [%g4] ASI_DMMU andcc %g1, 0x1, %g0 be,pn %icc, 2f andn %g1, 0x1, %g5 stxa %g0, [%g5] ASI_IMMU_DEMAP 2: stxa %g0, [%g5] ASI_DMMU_DEMAP membar #Sync stxa %g2, [%g4] ASI_DMMU retry nop nop nop nop nop .globl xcall_flush_tlb_kernel_range xcall_flush_tlb_kernel_range: /* 44 insns */ sethi %hi(PAGE_SIZE - 1), %g2 or %g2, %lo(PAGE_SIZE - 1), %g2 andn %g1, %g2, %g1 andn %g7, %g2, %g7 sub %g7, %g1, %g3 srlx %g3, 18, %g2 brnz,pn %g2, 2f sethi %hi(PAGE_SIZE), %g2 sub %g3, %g2, %g3 or %g1, 0x20, %g1 ! Nucleus 1: stxa %g0, [%g1 + %g3] ASI_DMMU_DEMAP stxa %g0, [%g1 + %g3] ASI_IMMU_DEMAP membar #Sync brnz,pt %g3, 1b sub %g3, %g2, %g3 retry 2: mov 63 * 8, %g1 1: ldxa [%g1] ASI_ITLB_DATA_ACCESS, %g2 andcc %g2, 0x40, %g0 /* _PAGE_L_4U */ bne,pn %xcc, 2f mov TLB_TAG_ACCESS, %g2 stxa %g0, [%g2] ASI_IMMU stxa %g0, [%g1] ASI_ITLB_DATA_ACCESS membar #Sync 2: ldxa [%g1] ASI_DTLB_DATA_ACCESS, %g2 andcc %g2, 0x40, %g0 bne,pn %xcc, 2f mov TLB_TAG_ACCESS, %g2 stxa %g0, [%g2] ASI_DMMU stxa %g0, [%g1] ASI_DTLB_DATA_ACCESS membar #Sync 2: sub %g1, 8, %g1 brgez,pt %g1, 1b nop retry nop nop nop nop nop nop nop nop nop /* This runs in a very controlled environment, so we do * not need to worry about BH races etc. */ .globl xcall_sync_tick xcall_sync_tick: 661: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate .section .sun4v_2insn_patch, "ax" .word 661b nop nop .previous rdpr %pil, %g2 wrpr %g0, PIL_NORMAL_MAX, %pil sethi %hi(109f), %g7 b,pt %xcc, etrap_irq 109: or %g7, %lo(109b), %g7 #ifdef CONFIG_TRACE_IRQFLAGS call trace_hardirqs_off nop #endif call smp_synchronize_tick_client nop b rtrap_xcall ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1 .globl xcall_fetch_glob_regs xcall_fetch_glob_regs: sethi %hi(global_cpu_snapshot), %g1 or %g1, %lo(global_cpu_snapshot), %g1 __GET_CPUID(%g2) sllx %g2, 6, %g3 add %g1, %g3, %g1 rdpr %tstate, %g7 stx %g7, [%g1 + GR_SNAP_TSTATE] rdpr %tpc, %g7 stx %g7, [%g1 + GR_SNAP_TPC] rdpr %tnpc, %g7 stx %g7, [%g1 + GR_SNAP_TNPC] stx %o7, [%g1 + GR_SNAP_O7] stx %i7, [%g1 + GR_SNAP_I7] /* Don't try this at home kids... */ rdpr %cwp, %g3 sub %g3, 1, %g7 wrpr %g7, %cwp mov %i7, %g7 wrpr %g3, %cwp stx %g7, [%g1 + GR_SNAP_RPC] sethi %hi(trap_block), %g7 or %g7, %lo(trap_block), %g7 sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2 add %g7, %g2, %g7 ldx [%g7 + TRAP_PER_CPU_THREAD], %g3 stx %g3, [%g1 + GR_SNAP_THREAD] retry .globl xcall_fetch_glob_pmu xcall_fetch_glob_pmu: sethi %hi(global_cpu_snapshot), %g1 or %g1, %lo(global_cpu_snapshot), %g1 __GET_CPUID(%g2) sllx %g2, 6, %g3 add %g1, %g3, %g1 rd %pic, %g7 stx %g7, [%g1 + (4 * 8)] rd %pcr, %g7 stx %g7, [%g1 + (0 * 8)] retry .globl xcall_fetch_glob_pmu_n4 xcall_fetch_glob_pmu_n4: sethi %hi(global_cpu_snapshot), %g1 or %g1, %lo(global_cpu_snapshot), %g1 __GET_CPUID(%g2) sllx %g2, 6, %g3 add %g1, %g3, %g1 ldxa [%g0] ASI_PIC, %g7 stx %g7, [%g1 + (4 * 8)] mov 0x08, %g3 ldxa [%g3] ASI_PIC, %g7 stx %g7, [%g1 + (5 * 8)] mov 0x10, %g3 ldxa [%g3] ASI_PIC, %g7 stx %g7, [%g1 + (6 * 8)] mov 0x18, %g3 ldxa [%g3] ASI_PIC, %g7 stx %g7, [%g1 + (7 * 8)] mov %o0, %g2 mov %o1, %g3 mov %o5, %g7 mov HV_FAST_VT_GET_PERFREG, %o5 mov 3, %o0 ta HV_FAST_TRAP stx %o1, [%g1 + (3 * 8)] mov HV_FAST_VT_GET_PERFREG, %o5 mov 2, %o0 ta HV_FAST_TRAP stx %o1, [%g1 + (2 * 8)] mov HV_FAST_VT_GET_PERFREG, %o5 mov 1, %o0 ta HV_FAST_TRAP stx %o1, [%g1 + (1 * 8)] mov HV_FAST_VT_GET_PERFREG, %o5 mov 0, %o0 ta HV_FAST_TRAP stx %o1, [%g1 + (0 * 8)] mov %g2, %o0 mov %g3, %o1 mov %g7, %o5 retry __cheetah_xcall_flush_tlb_kernel_range: /* 44 insns */ sethi %hi(PAGE_SIZE - 1), %g2 or %g2, %lo(PAGE_SIZE - 1), %g2 andn %g1, %g2, %g1 andn %g7, %g2, %g7 sub %g7, %g1, %g3 srlx %g3, 18, %g2 brnz,pn %g2, 2f sethi %hi(PAGE_SIZE), %g2 sub %g3, %g2, %g3 or %g1, 0x20, %g1 ! Nucleus 1: stxa %g0, [%g1 + %g3] ASI_DMMU_DEMAP stxa %g0, [%g1 + %g3] ASI_IMMU_DEMAP membar #Sync brnz,pt %g3, 1b sub %g3, %g2, %g3 retry 2: mov 0x80, %g2 stxa %g0, [%g2] ASI_DMMU_DEMAP membar #Sync stxa %g0, [%g2] ASI_IMMU_DEMAP membar #Sync retry nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop nop #ifdef DCACHE_ALIASING_POSSIBLE .align 32 .globl xcall_flush_dcache_page_cheetah xcall_flush_dcache_page_cheetah: /* %g1 == physical page address */ sethi %hi(PAGE_SIZE), %g3 1: subcc %g3, (1 << 5), %g3 stxa %g0, [%g1 + %g3] ASI_DCACHE_INVALIDATE membar #Sync bne,pt %icc, 1b nop retry nop #endif /* DCACHE_ALIASING_POSSIBLE */ .globl xcall_flush_dcache_page_spitfire xcall_flush_dcache_page_spitfire: /* %g1 == physical page address %g7 == kernel page virtual address %g5 == (page->mapping != NULL) */ #ifdef DCACHE_ALIASING_POSSIBLE srlx %g1, (13 - 2), %g1 ! Form tag comparitor sethi %hi(L1DCACHE_SIZE), %g3 ! D$ size == 16K sub %g3, (1 << 5), %g3 ! D$ linesize == 32 1: ldxa [%g3] ASI_DCACHE_TAG, %g2 andcc %g2, 0x3, %g0 be,pn %xcc, 2f andn %g2, 0x3, %g2 cmp %g2, %g1 bne,pt %xcc, 2f nop stxa %g0, [%g3] ASI_DCACHE_TAG membar #Sync 2: cmp %g3, 0 bne,pt %xcc, 1b sub %g3, (1 << 5), %g3 brz,pn %g5, 2f #endif /* DCACHE_ALIASING_POSSIBLE */ sethi %hi(PAGE_SIZE), %g3 1: flush %g7 subcc %g3, (1 << 5), %g3 bne,pt %icc, 1b add %g7, (1 << 5), %g7 2: retry nop nop /* %g5: error * %g6: tlb op */ __hypervisor_tlb_xcall_error: mov %g5, %g4 mov %g6, %g5 ba,pt %xcc, etrap rd %pc, %g7 mov %l4, %o0 call hypervisor_tlbop_error_xcall mov %l5, %o1 ba,a,pt %xcc, rtrap .globl __hypervisor_xcall_flush_tlb_mm __hypervisor_xcall_flush_tlb_mm: /* 24 insns */ /* %g5=ctx, g1,g2,g3,g4,g7=scratch, %g6=unusable */ mov %o0, %g2 mov %o1, %g3 mov %o2, %g4 mov %o3, %g1 mov %o5, %g7 clr %o0 /* ARG0: CPU lists unimplemented */ clr %o1 /* ARG1: CPU lists unimplemented */ mov %g5, %o2 /* ARG2: mmu context */ mov HV_MMU_ALL, %o3 /* ARG3: flags */ mov HV_FAST_MMU_DEMAP_CTX, %o5 ta HV_FAST_TRAP mov HV_FAST_MMU_DEMAP_CTX, %g6 brnz,pn %o0, 1f mov %o0, %g5 mov %g2, %o0 mov %g3, %o1 mov %g4, %o2 mov %g1, %o3 mov %g7, %o5 membar #Sync retry 1: sethi %hi(__hypervisor_tlb_xcall_error), %g4 jmpl %g4 + %lo(__hypervisor_tlb_xcall_error), %g0 nop .globl __hypervisor_xcall_flush_tlb_page __hypervisor_xcall_flush_tlb_page: /* 20 insns */ /* %g5=ctx, %g1=vaddr */ mov %o0, %g2 mov %o1, %g3 mov %o2, %g4 mov %g1, %o0 /* ARG0: virtual address */ mov %g5, %o1 /* ARG1: mmu context */ mov HV_MMU_ALL, %o2 /* ARG2: flags */ srlx %o0, PAGE_SHIFT, %o0 sllx %o0, PAGE_SHIFT, %o0 ta HV_MMU_UNMAP_ADDR_TRAP mov HV_MMU_UNMAP_ADDR_TRAP, %g6 brnz,a,pn %o0, 1f mov %o0, %g5 mov %g2, %o0 mov %g3, %o1 mov %g4, %o2 membar #Sync retry 1: sethi %hi(__hypervisor_tlb_xcall_error), %g4 jmpl %g4 + %lo(__hypervisor_tlb_xcall_error), %g0 nop .globl __hypervisor_xcall_flush_tlb_kernel_range __hypervisor_xcall_flush_tlb_kernel_range: /* 44 insns */ /* %g1=start, %g7=end, g2,g3,g4,g5,g6=scratch */ sethi %hi(PAGE_SIZE - 1), %g2 or %g2, %lo(PAGE_SIZE - 1), %g2 andn %g1, %g2, %g1 andn %g7, %g2, %g7 sub %g7, %g1, %g3 srlx %g3, 18, %g7 add %g2, 1, %g2 sub %g3, %g2, %g3 mov %o0, %g2 mov %o1, %g4 brnz,pn %g7, 2f mov %o2, %g7 1: add %g1, %g3, %o0 /* ARG0: virtual address */ mov 0, %o1 /* ARG1: mmu context */ mov HV_MMU_ALL, %o2 /* ARG2: flags */ ta HV_MMU_UNMAP_ADDR_TRAP mov HV_MMU_UNMAP_ADDR_TRAP, %g6 brnz,pn %o0, 1f mov %o0, %g5 sethi %hi(PAGE_SIZE), %o2 brnz,pt %g3, 1b sub %g3, %o2, %g3 5: mov %g2, %o0 mov %g4, %o1 mov %g7, %o2 membar #Sync retry 1: sethi %hi(__hypervisor_tlb_xcall_error), %g4 jmpl %g4 + %lo(__hypervisor_tlb_xcall_error), %g0 nop 2: mov %o3, %g1 mov %o5, %g3 mov 0, %o0 /* ARG0: CPU lists unimplemented */ mov 0, %o1 /* ARG1: CPU lists unimplemented */ mov 0, %o2 /* ARG2: mmu context == nucleus */ mov HV_MMU_ALL, %o3 /* ARG3: flags */ mov HV_FAST_MMU_DEMAP_CTX, %o5 ta HV_FAST_TRAP mov %g1, %o3 brz,pt %o0, 5b mov %g3, %o5 mov HV_FAST_MMU_DEMAP_CTX, %g6 ba,pt %xcc, 1b clr %g5 /* These just get rescheduled to PIL vectors. */ .globl xcall_call_function xcall_call_function: wr %g0, (1 << PIL_SMP_CALL_FUNC), %set_softint retry .globl xcall_call_function_single xcall_call_function_single: wr %g0, (1 << PIL_SMP_CALL_FUNC_SNGL), %set_softint retry .globl xcall_receive_signal xcall_receive_signal: wr %g0, (1 << PIL_SMP_RECEIVE_SIGNAL), %set_softint retry .globl xcall_capture xcall_capture: wr %g0, (1 << PIL_SMP_CAPTURE), %set_softint retry #ifdef CONFIG_KGDB .globl xcall_kgdb_capture xcall_kgdb_capture: wr %g0, (1 << PIL_KGDB_CAPTURE), %set_softint retry #endif #endif /* CONFIG_SMP */ .globl cheetah_patch_cachetlbops cheetah_patch_cachetlbops: save %sp, -128, %sp sethi %hi(__flush_tlb_mm), %o0 or %o0, %lo(__flush_tlb_mm), %o0 sethi %hi(__cheetah_flush_tlb_mm), %o1 or %o1, %lo(__cheetah_flush_tlb_mm), %o1 call tlb_patch_one mov 19, %o2 sethi %hi(__flush_tlb_page), %o0 or %o0, %lo(__flush_tlb_page), %o0 sethi %hi(__cheetah_flush_tlb_page), %o1 or %o1, %lo(__cheetah_flush_tlb_page), %o1 call tlb_patch_one mov 22, %o2 sethi %hi(__flush_tlb_pending), %o0 or %o0, %lo(__flush_tlb_pending), %o0 sethi %hi(__cheetah_flush_tlb_pending), %o1 or %o1, %lo(__cheetah_flush_tlb_pending), %o1 call tlb_patch_one mov 27, %o2 sethi %hi(__flush_tlb_kernel_range), %o0 or %o0, %lo(__flush_tlb_kernel_range), %o0 sethi %hi(__cheetah_flush_tlb_kernel_range), %o1 or %o1, %lo(__cheetah_flush_tlb_kernel_range), %o1 call tlb_patch_one mov 31, %o2 #ifdef DCACHE_ALIASING_POSSIBLE sethi %hi(__flush_dcache_page), %o0 or %o0, %lo(__flush_dcache_page), %o0 sethi %hi(__cheetah_flush_dcache_page), %o1 or %o1, %lo(__cheetah_flush_dcache_page), %o1 call tlb_patch_one mov 11, %o2 #endif /* DCACHE_ALIASING_POSSIBLE */ #ifdef CONFIG_SMP sethi %hi(xcall_flush_tlb_kernel_range), %o0 or %o0, %lo(xcall_flush_tlb_kernel_range), %o0 sethi %hi(__cheetah_xcall_flush_tlb_kernel_range), %o1 or %o1, %lo(__cheetah_xcall_flush_tlb_kernel_range), %o1 call tlb_patch_one mov 44, %o2 #endif /* CONFIG_SMP */ ret restore .globl hypervisor_patch_cachetlbops hypervisor_patch_cachetlbops: save %sp, -128, %sp sethi %hi(__flush_tlb_mm), %o0 or %o0, %lo(__flush_tlb_mm), %o0 sethi %hi(__hypervisor_flush_tlb_mm), %o1 or %o1, %lo(__hypervisor_flush_tlb_mm), %o1 call tlb_patch_one mov 19, %o2 sethi %hi(__flush_tlb_page), %o0 or %o0, %lo(__flush_tlb_page), %o0 sethi %hi(__hypervisor_flush_tlb_page), %o1 or %o1, %lo(__hypervisor_flush_tlb_page), %o1 call tlb_patch_one mov 22, %o2 sethi %hi(__flush_tlb_pending), %o0 or %o0, %lo(__flush_tlb_pending), %o0 sethi %hi(__hypervisor_flush_tlb_pending), %o1 or %o1, %lo(__hypervisor_flush_tlb_pending), %o1 call tlb_patch_one mov 27, %o2 sethi %hi(__flush_tlb_kernel_range), %o0 or %o0, %lo(__flush_tlb_kernel_range), %o0 sethi %hi(__hypervisor_flush_tlb_kernel_range), %o1 or %o1, %lo(__hypervisor_flush_tlb_kernel_range), %o1 call tlb_patch_one mov 31, %o2 #ifdef DCACHE_ALIASING_POSSIBLE sethi %hi(__flush_dcache_page), %o0 or %o0, %lo(__flush_dcache_page), %o0 sethi %hi(__hypervisor_flush_dcache_page), %o1 or %o1, %lo(__hypervisor_flush_dcache_page), %o1 call tlb_patch_one mov 2, %o2 #endif /* DCACHE_ALIASING_POSSIBLE */ #ifdef CONFIG_SMP sethi %hi(xcall_flush_tlb_mm), %o0 or %o0, %lo(xcall_flush_tlb_mm), %o0 sethi %hi(__hypervisor_xcall_flush_tlb_mm), %o1 or %o1, %lo(__hypervisor_xcall_flush_tlb_mm), %o1 call tlb_patch_one mov 24, %o2 sethi %hi(xcall_flush_tlb_page), %o0 or %o0, %lo(xcall_flush_tlb_page), %o0 sethi %hi(__hypervisor_xcall_flush_tlb_page), %o1 or %o1, %lo(__hypervisor_xcall_flush_tlb_page), %o1 call tlb_patch_one mov 20, %o2 sethi %hi(xcall_flush_tlb_kernel_range), %o0 or %o0, %lo(xcall_flush_tlb_kernel_range), %o0 sethi %hi(__hypervisor_xcall_flush_tlb_kernel_range), %o1 or %o1, %lo(__hypervisor_xcall_flush_tlb_kernel_range), %o1 call tlb_patch_one mov 44, %o2 #endif /* CONFIG_SMP */ ret restore