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[142.114.143.47]) by smtp.googlemail.com with ESMTPSA id c69sm1714864qkg.1.2021.08.12.09.53.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Aug 2021 09:53:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Kyjpq/o+nyGQCVVXepRD7yL60Hllj+cbnk5hSa+ob8U=; b=LPPb53qfW5CrHK29wAv3kd9TlWYA0+BrAZeghHdqquKi4DmCkrhqa58y4Wa3daQHQd mlXZ9fIgacLxuv1sfOOdEC/P3qiJkABZKCs7mxKgA4JNr2bukgBPkKDeikpbW9ri+lhK WYXuZsE67EkXlFo96SxQvFJ0s2kg53en1f3VdB6RFDpoO6FLQfwSy7kGp/x24zUqgGMC JpTpQX/Vrfh6wN9f7exVPe5lrHFhHg/rCrYJOvu0f1uNxFY+QPK1uaLAtU6lKn7+98Ss GA3pCnPs6W3Sm+M4Cg9ypZ21W1ZBN+IX1tt4e2+4O6nVCGKqjq3oKgTaeNGsFIHYKCGp Zicw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Kyjpq/o+nyGQCVVXepRD7yL60Hllj+cbnk5hSa+ob8U=; b=F/YetPqEaom21bEiRSMIJXxSWA+lNMSCjJDk2NZgdejUH6fImIgmmIBuRYFaGXQTBM nnyFTK60gdB6Z0nGafW5MbaXRh/qu35EjrKlS3/T/XZ8V5wDc8RCYI6p+ClmN/zLHSp5 cEksI+bTSSGJwVViERoXe/KokyjnUFB/is22xttXEokBOD21kB65yUqMr+rWYy6uJFya SNBUTML2dmZI60pFOp+rn65LIORutxMMcHAkYUAM4C7IvAVi+QfaWRkQnXNEaVG71WMk ySB6yWgQ8yahJ3YZYr9y0psCVtM1t8TqsXsSusKJrjyiAS0tQgIxjH9QU0E/pZ05P9Rh 2oIA== X-Gm-Message-State: AOAM530+knAS95gcvFRWexljGwyeU1ash0Ovro3N6p6T9U5TlYNwhmX+ 8LhL66SpQdTSMwCmsPvLklibcw== X-Google-Smtp-Source: ABdhPJzJI72sl+euIhdQGwBzzeRDUqJ4s5tmRAYByD/DCTlvVmE/V5FJPZsARav3XkoMAmvXaElmYQ== X-Received: by 2002:a0c:fe6a:: with SMTP id b10mr4896533qvv.6.1628787233247; Thu, 12 Aug 2021 09:53:53 -0700 (PDT) From: Shashi Mallela To: peter.maydell@linaro.org, leif@nuviainc.com, rad@semihalf.com, mst@redhat.com, imammedo@redhat.com Subject: [PATCH v8 09/10] hw/arm/virt: add ITS support in virt GIC Date: Thu, 12 Aug 2021 12:53:40 -0400 Message-Id: <20210812165341.40784-10-shashi.mallela@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210812165341.40784-1-shashi.mallela@linaro.org> References: <20210812165341.40784-1-shashi.mallela@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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::f32; envelope-from=shashi.mallela@linaro.org; helo=mail-qv1-xf32.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, 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 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eric.auger@redhat.com, qemu-arm@nongnu.org, qemu-devel@nongnu.org, narmstrong@baylibre.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1628787921044100001 Content-Type: text/plain; charset="utf-8" Included creation of ITS as part of virt platform GIC initialization. This Emulated ITS model now co-exists with kvm ITS and is enabled in absence of kvm irq kernel support in a platform. Signed-off-by: Shashi Mallela Reviewed-by: Peter Maydell --- hw/arm/virt.c | 28 ++++++++++++++++++++++++++-- include/hw/arm/virt.h | 2 ++ target/arm/kvm_arm.h | 4 ++-- 3 files changed, 30 insertions(+), 4 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 81eda46b0b..3cea2aa039 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -583,6 +583,12 @@ static void create_its(VirtMachineState *vms) const char *itsclass =3D its_class_name(); DeviceState *dev; =20 + if (!strcmp(itsclass, "arm-gicv3-its")) { + if (!vms->tcg_its) { + itsclass =3D NULL; + } + } + if (!itsclass) { /* Do nothing if not supported */ return; @@ -620,7 +626,7 @@ static void create_v2m(VirtMachineState *vms) vms->msi_controller =3D VIRT_MSI_CTRL_GICV2M; } =20 -static void create_gic(VirtMachineState *vms) +static void create_gic(VirtMachineState *vms, MemoryRegion *mem) { MachineState *ms =3D MACHINE(vms); /* We create a standalone GIC */ @@ -654,6 +660,14 @@ static void create_gic(VirtMachineState *vms) nb_redist_regions); qdev_prop_set_uint32(vms->gic, "redist-region-count[0]", redist0_c= ount); =20 + if (!kvm_irqchip_in_kernel()) { + if (vms->tcg_its) { + object_property_set_link(OBJECT(vms->gic), "sysmem", + OBJECT(mem), &error_fatal); + qdev_prop_set_bit(vms->gic, "has-lpi", true); + } + } + if (nb_redist_regions =3D=3D 2) { uint32_t redist1_capacity =3D vms->memmap[VIRT_HIGH_GIC_REDIST2].size / GICV3_REDIST= _SIZE; @@ -2043,7 +2057,7 @@ static void machvirt_init(MachineState *machine) =20 virt_flash_fdt(vms, sysmem, secure_sysmem ?: sysmem); =20 - create_gic(vms); + create_gic(vms, sysmem); =20 virt_cpu_post_init(vms, sysmem); =20 @@ -2746,6 +2760,12 @@ static void virt_instance_init(Object *obj) } else { /* Default allows ITS instantiation */ vms->its =3D true; + + if (vmc->no_tcg_its) { + vms->tcg_its =3D false; + } else { + vms->tcg_its =3D true; + } } =20 /* Default disallows iommu instantiation */ @@ -2790,6 +2810,10 @@ type_init(machvirt_machine_init); =20 static void virt_machine_6_1_options(MachineClass *mc) { + VirtMachineClass *vmc =3D VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); + + /* qemu ITS was introduced with 6.2 */ + vmc->no_tcg_its =3D true; } DEFINE_VIRT_MACHINE_AS_LATEST(6, 1) =20 diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 9661c46699..b461b8d261 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -120,6 +120,7 @@ struct VirtMachineClass { MachineClass parent; bool disallow_affinity_adjustment; bool no_its; + bool no_tcg_its; bool no_pmu; bool claim_edge_triggered_timers; bool smbios_old_sys_ver; @@ -141,6 +142,7 @@ struct VirtMachineState { bool highmem; bool highmem_ecam; bool its; + bool tcg_its; bool virt; bool ras; bool mte; diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index 34f8daa377..0613454975 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -525,8 +525,8 @@ static inline const char *its_class_name(void) /* KVM implementation requires this capability */ return kvm_direct_msi_enabled() ? "arm-its-kvm" : NULL; } else { - /* Software emulation is not implemented yet */ - return NULL; + /* Software emulation based model */ + return "arm-gicv3-its"; } } =20 --=20 2.27.0