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Mon, 25 Mar 2024 03:15:22 -0700 (PDT) Date: Mon, 25 Mar 2024 10:14:04 +0000 In-Reply-To: <20240325101442.1306300-1-smostafa@google.com> Mime-Version: 1.0 References: <20240325101442.1306300-1-smostafa@google.com> X-Mailer: git-send-email 2.44.0.396.g6e790dbe36-goog Message-ID: <20240325101442.1306300-9-smostafa@google.com> Subject: [RFC PATCH 08/12] hw/arm/smmuv3: Support and advertise nesting From: Mostafa Saleh To: qemu-arm@nongnu.org, eric.auger@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Cc: jean-philippe@linaro.org, alex.bennee@linaro.org, maz@kernel.org, nicolinc@nvidia.com, julien@xen.org, Mostafa Saleh Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1149; envelope-from=3uk4BZggKCpMF9BFGx2x3BB381.zB9D19H-01I18ABA3AH.BE3@flex--smostafa.bounces.google.com; helo=mail-yw1-x1149.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @google.com) X-ZM-MESSAGEID: 1711361781153100003 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Everything is in place, add the last missing bits: - Handle fault checking according to the actual PTW event and not the the translation stage. - Consolidate parsing of STE cfg and setting translation stage. Advertise nesting if stage requested is "nested". Signed-off-by: Mostafa Saleh --- hw/arm/smmuv3.c | 51 ++++++++++++++++++++++++++++++++++--------------- 1 file changed, 36 insertions(+), 15 deletions(-) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 32a1838576..e5373f4cfe 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -34,9 +34,10 @@ #include "smmuv3-internal.h" #include "smmu-internal.h" =20 -#define PTW_RECORD_FAULT(cfg) (((cfg)->stage =3D=3D SMMU_STAGE_1) ? \ - (cfg)->record_faults : \ - (cfg)->s2cfg.record_faults) +#define PTW_RECORD_FAULT(ptw_info, cfg) (((ptw_info).stage =3D=3D SMMU_STA= GE_1 && \ + (cfg)->record_faults) || \ + ((ptw_info).stage =3D=3D SMMU_STAG= E_2 && \ + (cfg)->s2cfg.record_faults)) =20 /** * smmuv3_trigger_irq - pulse @irq if enabled and update @@ -260,6 +261,9 @@ static void smmuv3_init_regs(SMMUv3State *s) /* Based on sys property, the stages supported in smmu will be adverti= sed.*/ if (s->stage && !strcmp("2", s->stage)) { s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, S2P, 1); + } else if (s->stage && !strcmp("nested", s->stage)) { + s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, S1P, 1); + s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, S2P, 1); } else { s->idr[0] =3D FIELD_DP32(s->idr[0], IDR0, S1P, 1); } @@ -425,8 +429,6 @@ static bool s2_pgtable_config_valid(uint8_t sl0, uint8_= t t0sz, uint8_t gran) =20 static int decode_ste_s2_cfg(SMMUTransCfg *cfg, STE *ste) { - cfg->stage =3D SMMU_STAGE_2; - if (STE_S2AA64(ste) =3D=3D 0x0) { qemu_log_mask(LOG_UNIMP, "SMMUv3 AArch32 tables not supported\n"); @@ -509,6 +511,27 @@ bad_ste: return -EINVAL; } =20 +static void decode_ste_config(SMMUTransCfg *cfg, uint32_t config) +{ + + if (STE_CFG_ABORT(config)) { + cfg->aborted =3D true; + return; + } + if (STE_CFG_BYPASS(config)) { + cfg->bypassed =3D true; + return; + } + + if (STE_CFG_S1_ENABLED(config)) { + cfg->stage |=3D SMMU_STAGE_1; + } + + if (STE_CFG_S2_ENABLED(config)) { + cfg->stage |=3D SMMU_STAGE_2; + } +} + /* Returns < 0 in case of invalid STE, 0 otherwise */ static int decode_ste(SMMUv3State *s, SMMUTransCfg *cfg, STE *ste, SMMUEventInfo *event) @@ -525,16 +548,15 @@ static int decode_ste(SMMUv3State *s, SMMUTransCfg *c= fg, =20 config =3D STE_CONFIG(ste); =20 - if (STE_CFG_ABORT(config)) { - cfg->aborted =3D true; + decode_ste_config(cfg, config); + + if (cfg->aborted) { return 0; } =20 - if (STE_CFG_BYPASS(config)) { - cfg->bypassed =3D true; + if (cfg->bypassed) { return 0; } - /* * If a stage is enabled in SW while not advertised, throw bad ste * according to user manual(IHI0070E) "5.2 Stream Table Entry". @@ -704,7 +726,6 @@ static int decode_cd(SMMUv3State *s, SMMUTransCfg *cfg, =20 /* we support only those at the moment */ cfg->aa64 =3D true; - cfg->stage =3D SMMU_STAGE_1; =20 cfg->oas =3D oas2bits(CD_IPS(cd)); cfg->oas =3D MIN(oas2bits(SMMU_IDR5_OAS), cfg->oas); @@ -887,28 +908,28 @@ static SMMUTranslationStatus smmuv3_do_translate(SMMU= v3State *s, hwaddr addr, event->u.f_walk_eabt.addr2 =3D ptw_info.addr; break; case SMMU_PTW_ERR_TRANSLATION: - if (PTW_RECORD_FAULT(cfg)) { + if (PTW_RECORD_FAULT(ptw_info, cfg)) { event->type =3D SMMU_EVT_F_TRANSLATION; event->u.f_translation.addr =3D addr; event->u.f_translation.rnw =3D flag & 0x1; } break; case SMMU_PTW_ERR_ADDR_SIZE: - if (PTW_RECORD_FAULT(cfg)) { + if (PTW_RECORD_FAULT(ptw_info, cfg)) { event->type =3D SMMU_EVT_F_ADDR_SIZE; event->u.f_addr_size.addr =3D addr; event->u.f_addr_size.rnw =3D flag & 0x1; } break; case SMMU_PTW_ERR_ACCESS: - if (PTW_RECORD_FAULT(cfg)) { + if (PTW_RECORD_FAULT(ptw_info, cfg)) { event->type =3D SMMU_EVT_F_ACCESS; event->u.f_access.addr =3D addr; event->u.f_access.rnw =3D flag & 0x1; } break; case SMMU_PTW_ERR_PERMISSION: - if (PTW_RECORD_FAULT(cfg)) { + if (PTW_RECORD_FAULT(ptw_info, cfg)) { event->type =3D SMMU_EVT_F_PERMISSION; event->u.f_permission.addr =3D addr; event->u.f_permission.rnw =3D flag & 0x1; --=20 2.44.0.396.g6e790dbe36-goog