xref: /qemu/target/arm/tcg/tlb-insns.c (revision d6b6da1fc84173d1d8e8777c487c21ffeab5f5ce)

/*
 * Helpers for TLBI insns
 *
 * This code is licensed under the GNU GPL v2 or later.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
#include "qemu/osdep.h"
#include "exec/exec-all.h"
#include "cpu.h"
#include "internals.h"
#include "cpu-features.h"
#include "cpregs.h"

/* IS variants of TLB operations must affect all cores */
static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                             uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_all_cpus_synced(cs);
}

static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                             uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_all_cpus_synced(cs);
}

static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                             uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK);
}

static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                             uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK);
}

static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri,
                          uint64_t value)
{
    /* Invalidate all (TLBIALL) */
    CPUState *cs = env_cpu(env);

    if (tlb_force_broadcast(env)) {
        tlb_flush_all_cpus_synced(cs);
    } else {
        tlb_flush(cs);
    }
}

static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri,
                          uint64_t value)
{
    /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */
    CPUState *cs = env_cpu(env);

    value &= TARGET_PAGE_MASK;
    if (tlb_force_broadcast(env)) {
        tlb_flush_page_all_cpus_synced(cs, value);
    } else {
        tlb_flush_page(cs, value);
    }
}

static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri,
                           uint64_t value)
{
    /* Invalidate by ASID (TLBIASID) */
    CPUState *cs = env_cpu(env);

    if (tlb_force_broadcast(env)) {
        tlb_flush_all_cpus_synced(cs);
    } else {
        tlb_flush(cs);
    }
}

static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri,
                           uint64_t value)
{
    /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */
    CPUState *cs = env_cpu(env);

    value &= TARGET_PAGE_MASK;
    if (tlb_force_broadcast(env)) {
        tlb_flush_page_all_cpus_synced(cs, value);
    } else {
        tlb_flush_page(cs, value);
    }
}

static void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                              uint64_t value)
{
    CPUState *cs = env_cpu(env);
    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);

    tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_E2);
}

static void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                 uint64_t value)
{
    CPUState *cs = env_cpu(env);
    uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);

    tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
                                             ARMMMUIdxBit_E2);
}

static void tlbiipas2_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                uint64_t value)
{
    CPUState *cs = env_cpu(env);
    uint64_t pageaddr = (value & MAKE_64BIT_MASK(0, 28)) << 12;

    tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_Stage2);
}

static void tlbiipas2is_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                uint64_t value)
{
    CPUState *cs = env_cpu(env);
    uint64_t pageaddr = (value & MAKE_64BIT_MASK(0, 28)) << 12;

    tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr, ARMMMUIdxBit_Stage2);
}

static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri,
                               uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_by_mmuidx(cs, alle1_tlbmask(env));
}

static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                  uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_by_mmuidx_all_cpus_synced(cs, alle1_tlbmask(env));
}


static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
                              uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_E2);
}

static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
                                 uint64_t value)
{
    CPUState *cs = env_cpu(env);

    tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_E2);
}

static const ARMCPRegInfo tlbi_not_v7_cp_reginfo[] = {
    /*
     * MMU TLB control. Note that the wildcarding means we cover not just
     * the unified TLB ops but also the dside/iside/inner-shareable variants.
     */
    { .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY,
      .opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write,
      .type = ARM_CP_NO_RAW },
    { .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY,
      .opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write,
      .type = ARM_CP_NO_RAW },
    { .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY,
      .opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write,
      .type = ARM_CP_NO_RAW },
    { .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY,
      .opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write,
      .type = ARM_CP_NO_RAW },
};

static const ARMCPRegInfo tlbi_v7_cp_reginfo[] = {
    /* 32 bit ITLB invalidates */
    { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiall_write },
    { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimva_write },
    { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiasid_write },
    /* 32 bit DTLB invalidates */
    { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiall_write },
    { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimva_write },
    { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiasid_write },
    /* 32 bit TLB invalidates */
    { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiall_write },
    { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimva_write },
    { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbiasid_write },
    { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimvaa_write },
};

static const ARMCPRegInfo tlbi_v7mp_cp_reginfo[] = {
    /* 32 bit TLB invalidates, Inner Shareable */
    { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbiall_is_write },
    { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbimva_is_write },
    { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbiasid_is_write },
    { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbimvaa_is_write },
};

static const ARMCPRegInfo tlbi_v8_cp_reginfo[] = {
    /* AArch32 TLB invalidate last level of translation table walk */
    { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbimva_is_write },
    { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlbis,
      .writefn = tlbimvaa_is_write },
    { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimva_write },
    { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
      .writefn = tlbimvaa_write },
    { .name = "TLBIMVALH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbimva_hyp_write },
    { .name = "TLBIMVALHIS",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbimva_hyp_is_write },
    { .name = "TLBIIPAS2",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiipas2_hyp_write },
    { .name = "TLBIIPAS2IS",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiipas2is_hyp_write },
    { .name = "TLBIIPAS2L",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiipas2_hyp_write },
    { .name = "TLBIIPAS2LIS",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiipas2is_hyp_write },
};

static const ARMCPRegInfo tlbi_el2_cp_reginfo[] = {
    { .name = "TLBIALLNSNH",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiall_nsnh_write },
    { .name = "TLBIALLNSNHIS",
      .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiall_nsnh_is_write },
    { .name = "TLBIALLH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiall_hyp_write },
    { .name = "TLBIALLHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbiall_hyp_is_write },
    { .name = "TLBIMVAH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbimva_hyp_write },
    { .name = "TLBIMVAHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
      .type = ARM_CP_NO_RAW, .access = PL2_W,
      .writefn = tlbimva_hyp_is_write },
};

void define_tlb_insn_regs(ARMCPU *cpu)
{
    CPUARMState *env = &cpu->env;

    if (!arm_feature(env, ARM_FEATURE_V7)) {
        define_arm_cp_regs(cpu, tlbi_not_v7_cp_reginfo);
    } else {
        define_arm_cp_regs(cpu, tlbi_v7_cp_reginfo);
    }
    if (arm_feature(env, ARM_FEATURE_V7MP) &&
        !arm_feature(env, ARM_FEATURE_PMSA)) {
        define_arm_cp_regs(cpu, tlbi_v7mp_cp_reginfo);
    }
    if (arm_feature(env, ARM_FEATURE_V8)) {
        define_arm_cp_regs(cpu, tlbi_v8_cp_reginfo);
    }
    /*
     * We retain the existing logic for when to register these TLBI
     * ops (i.e. matching the condition for el2_cp_reginfo[] in
     * helper.c), but we will be able to simplify this later.
     */
    if (arm_feature(env, ARM_FEATURE_EL2)
        || (arm_feature(env, ARM_FEATURE_EL3)
            && arm_feature(env, ARM_FEATURE_V8))) {
        define_arm_cp_regs(cpu, tlbi_el2_cp_reginfo);
    }
}