From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 71F5DC433EF for ; Fri, 20 May 2022 17:42:02 +0000 (UTC) Received: from localhost ([::1]:33170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ns6dV-0005dz-Hf for qemu-devel@archiver.kernel.org; Fri, 20 May 2022 13:42:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33318) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ns6XP-0002bU-BZ; Fri, 20 May 2022 13:35:47 -0400 Received: from [187.72.171.209] (port=3625 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ns6XN-0000WH-Hc; Fri, 20 May 2022 13:35:43 -0400 Received: from p9ibm ([10.10.71.235]) by outlook.eldorado.org.br over TLS secured channel with Microsoft SMTPSVC(8.5.9600.16384); Fri, 20 May 2022 14:34:35 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by p9ibm (Postfix) with ESMTP id 02FD08000A0; Fri, 20 May 2022 14:34:34 -0300 (-03) From: Leandro Lupori To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Cc: clg@kaod.org, danielhb413@gmail.com, david@gibson.dropbear.id.au, groug@kaod.org, Leandro Lupori Subject: [PATCH 3/3] target/ppc: Implement ISA 3.00 tlbie[l] Date: Fri, 20 May 2022 14:33:46 -0300 Message-Id: <20220520173346.20807-4-leandro.lupori@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220520173346.20807-1-leandro.lupori@eldorado.org.br> References: <20220520173346.20807-1-leandro.lupori@eldorado.org.br> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 20 May 2022 17:34:35.0522 (UTC) FILETIME=[DF8DEE20:01D86C6F] X-Host-Lookup-Failed: Reverse DNS lookup failed for 187.72.171.209 (failed) Received-SPF: pass client-ip=187.72.171.209; envelope-from=leandro.lupori@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.659, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This initial version supports the invalidation of one or all TLB entries. Flush by PID/LPID, or based in process/partition scope is not supported, because it would make using the generic QEMU TLB implementation hard. In these cases, all entries are flushed. Signed-off-by: Leandro Lupori --- target/ppc/helper.h | 18 +++ target/ppc/mmu_helper.c | 154 +++++++++++++++++++ target/ppc/translate/storage-ctrl-impl.c.inc | 15 ++ 3 files changed, 187 insertions(+) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index aa6773c4a5..fa1d2cb33f 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -631,6 +631,24 @@ DEF_HELPER_FLAGS_1(tlbia, TCG_CALL_NO_RWG, void, env) DEF_HELPER_FLAGS_2(tlbie, TCG_CALL_NO_RWG, void, env, tl) DEF_HELPER_FLAGS_2(tlbiva, TCG_CALL_NO_RWG, void, env, tl) #if defined(TARGET_PPC64) + +/* + * tlbie[l] helper flags + * + * RIC, PRS, R and local are passed as flags in the last argument. + */ +#define TLBIE_F_RIC_SHIFT 0 +#define TLBIE_F_PRS_SHIFT 2 +#define TLBIE_F_R_SHIFT 3 +#define TLBIE_F_LOCAL_SHIFT 4 + +#define TLBIE_F_RIC_MASK (3 << TLBIE_F_RIC_SHIFT) +#define TLBIE_F_PRS (1 << TLBIE_F_PRS_SHIFT) +#define TLBIE_F_R (1 << TLBIE_F_R_SHIFT) +#define TLBIE_F_LOCAL (1 << TLBIE_F_LOCAL_SHIFT) + +DEF_HELPER_FLAGS_4(tlbie_isa300, TCG_CALL_NO_WG, void, \ + env, tl, tl, i32) DEF_HELPER_FLAGS_3(store_slb, TCG_CALL_NO_RWG, void, env, tl, tl) DEF_HELPER_2(load_slb_esid, tl, env, tl) DEF_HELPER_2(load_slb_vsid, tl, env, tl) diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c index 15239dc95b..b881aee23f 100644 --- a/target/ppc/mmu_helper.c +++ b/target/ppc/mmu_helper.c @@ -429,6 +429,160 @@ void helper_tlbie(CPUPPCState *env, target_ulong addr) ppc_tlb_invalidate_one(env, addr); } +#if defined(TARGET_PPC64) + +/* Invalidation Selector */ +#define TLBIE_IS_VA 0 +#define TLBIE_IS_PID 1 +#define TLBIE_IS_LPID 2 +#define TLBIE_IS_ALL 3 + +/* Radix Invalidation Control */ +#define TLBIE_RIC_TLB 0 +#define TLBIE_RIC_PWC 1 +#define TLBIE_RIC_ALL 2 +#define TLBIE_RIC_GRP 3 + +/* Radix Actual Page sizes */ +#define TLBIE_R_AP_4K 0 +#define TLBIE_R_AP_64K 5 +#define TLBIE_R_AP_2M 1 +#define TLBIE_R_AP_1G 2 + +/* RB field masks */ +#define TLBIE_RB_EPN_MASK PPC_BITMASK(0, 51) +#define TLBIE_RB_IS_MASK PPC_BITMASK(52, 53) +#define TLBIE_RB_AP_MASK PPC_BITMASK(56, 58) + +void helper_tlbie_isa300(CPUPPCState *env, target_ulong rb, target_ulong rs, + uint32_t flags) +{ + unsigned ric = (flags & TLBIE_F_RIC_MASK) >> TLBIE_F_RIC_SHIFT; + /* + * With the exception of the checks for invalid instruction forms, + * PRS is currently ignored, because we don't know if a given TLB entry + * is process or partition scoped. + */ + bool prs = flags & TLBIE_F_PRS; + bool r = flags & TLBIE_F_R; + bool local = flags & TLBIE_F_LOCAL; + bool effR; + unsigned is = extract64(rb, PPC_BIT_NR(53), 2), set; + unsigned ap; /* actual page size */ + target_ulong addr, pgoffs_mask; + + qemu_log_mask(CPU_LOG_MMU, + "%s: local=%d addr=" TARGET_FMT_lx " ric=%u prs=%d r=%d is=%u\n", + __func__, local, rb & TARGET_PAGE_MASK, ric, prs, r, is); + + effR = FIELD_EX64(env->msr, MSR, HV) ? r : env->spr[SPR_LPCR] & LPCR_HR; + + /* Partial TLB invalidation is supported for Radix only for now. */ + if (!effR) { + goto inval_all; + } + + /* Check for invalid instruction forms (effR=1). */ + if (unlikely(ric == TLBIE_RIC_GRP || + ((ric == TLBIE_RIC_PWC || ric == TLBIE_RIC_ALL) && + is == TLBIE_IS_VA) || + (!prs && is == TLBIE_IS_PID))) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: invalid instruction form: ric=%u prs=%d r=%d is=%u\n", + __func__, ric, prs, r, is); + goto invalid; + } + + /* We don't cache Page Walks. */ + if (ric == TLBIE_RIC_PWC) { + if (local) { + set = extract64(rb, PPC_BIT_NR(51), 12); + if (set != 0) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid set: %d\n", + __func__, set); + goto invalid; + } + } + return; + } + + /* + * Invalidation by LPID or PID is not supported, so fallback + * to full TLB flush in these cases. + */ + if (is != TLBIE_IS_VA) { + goto inval_all; + } + + /* + * The results of an attempt to invalidate a translation outside of + * quadrant 0 for Radix Tree translation (effR=1, RIC=0, PRS=1, IS=0, + * and EA 0:1 != 0b00) are boundedly undefined. + */ + if (unlikely(ric == TLBIE_RIC_TLB && prs && is == TLBIE_IS_VA && + (rb & R_EADDR_QUADRANT) != R_EADDR_QUADRANT0)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: attempt to invalidate a translation outside of quadrant 0\n", + __func__); + goto inval_all; + } + + assert(is == TLBIE_IS_VA); + assert(ric == TLBIE_RIC_TLB || ric == TLBIE_RIC_ALL); + + ap = extract64(rb, PPC_BIT_NR(58), 3); + switch (ap) { + case TLBIE_R_AP_4K: + pgoffs_mask = 0xfffull; + break; + + case TLBIE_R_AP_64K: + pgoffs_mask = 0xffffull; + break; + + case TLBIE_R_AP_2M: + pgoffs_mask = 0x1fffffull; + break; + + case TLBIE_R_AP_1G: + pgoffs_mask = 0x3fffffffull; + break; + + default: + /* + * If the value specified in RS 0:31, RS 32:63, RB 54:55, RB 56:58, + * RB 44:51, or RB 56:63, when it is needed to perform the specified + * operation, is not supported by the implementation, the instruction + * is treated as if the instruction form were invalid. + */ + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid AP: %d\n", __func__, ap); + goto invalid; + } + + addr = rb & TLBIE_RB_EPN_MASK & ~pgoffs_mask; + + if (local) { + tlb_flush_page(env_cpu(env), addr); + } else { + tlb_flush_page_all_cpus(env_cpu(env), addr); + } + return; + +inval_all: + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; + if (!local) { + env->tlb_need_flush |= TLB_NEED_GLOBAL_FLUSH; + } + return; + +invalid: + raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL | + POWERPC_EXCP_INVAL_INVAL, GETPC()); +} + +#endif + void helper_tlbiva(CPUPPCState *env, target_ulong addr) { /* tlbiva instruction only exists on BookE */ diff --git a/target/ppc/translate/storage-ctrl-impl.c.inc b/target/ppc/translate/storage-ctrl-impl.c.inc index 7793297dd4..f9e4a807f2 100644 --- a/target/ppc/translate/storage-ctrl-impl.c.inc +++ b/target/ppc/translate/storage-ctrl-impl.c.inc @@ -65,6 +65,21 @@ static bool do_tlbie(DisasContext *ctx, arg_X_tlbie *a, bool local) tcg_gen_ext32u_tl(t0, cpu_gpr[rb]); gen_helper_tlbie(cpu_env, t0); tcg_temp_free(t0); + +#if defined(TARGET_PPC64) + /* + * ISA 3.1B says that MSR SF must be 1 when this instruction is executed; + * otherwise the results are undefined. + */ + } else if (a->r) { + gen_helper_tlbie_isa300(cpu_env, cpu_gpr[rb], cpu_gpr[a->rs], + tcg_constant_i32(a->ric << TLBIE_F_RIC_SHIFT | + a->prs << TLBIE_F_PRS_SHIFT | + a->r << TLBIE_F_R_SHIFT | + local << TLBIE_F_LOCAL_SHIFT)); + return true; +#endif + } else { gen_helper_tlbie(cpu_env, cpu_gpr[rb]); } -- 2.25.1