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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750067428; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tLE4q1mfr/9ieLq5n0slV4E5BeVue7NjrO+KIKIEe6A=; b=eGJRz8j0UoCj283YoznfZ8REiOsYM/zfsA1+NoEgc1aAxAU/aP9UeUmDPHeAPdtZnaFrob h3ExJLgl87AjteM8Xqk6ffjAzYk+SNc6XIKrUPmxrP7xeg4I75t67f5zxgqpcXdUx/q3m9 4ysUnefAglKnIIYRlj1Kf2OROU8OizI= X-MC-Unique: jQ6aOY3_Pm6dTDtglLJVFA-1 X-Mimecast-MFC-AGG-ID: jQ6aOY3_Pm6dTDtglLJVFA_1750067423 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, imammedo@redhat.com, gustavo.romero@linaro.org, anisinha@redhat.com, mst@redhat.com, shannon.zhaosl@gmail.com Cc: pbonzini@redhat.com, Jonathan.Cameron@huawei.com, philmd@linaro.org, alex.bennee@linaro.org Subject: [PATCH v3 13/29] hw/i386/acpi-build: Move build_append_notification_callback to pcihp Date: Mon, 16 Jun 2025 11:46:42 +0200 Message-ID: <20250616094903.885753-14-eric.auger@redhat.com> In-Reply-To: <20250616094903.885753-1-eric.auger@redhat.com> References: <20250616094903.885753-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" We plan to reuse build_append_notification_callback() on ARM so let's move it to pcihp.c. No functional change intended. Signed-off-by: Eric Auger Reviewed-by: Gustavo Romero Reviewed-by: Igor Mammedov Reviewed-by: Jonathan Cameron --- include/hw/acpi/pcihp.h | 1 + hw/acpi/pcihp.c | 58 +++++++++++++++++++++++++++++++++++++++++ hw/i386/acpi-build.c | 58 ----------------------------------------- 3 files changed, 59 insertions(+), 58 deletions(-) diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h index 253ac6e483..f4fd44cb32 100644 --- a/include/hw/acpi/pcihp.h +++ b/include/hw/acpi/pcihp.h @@ -78,6 +78,7 @@ void build_acpi_pci_hotplug(Aml *table, AmlRegionSpace rs= , uint64_t pcihp_addr); void build_append_pci_dsm_func0_common(Aml *ctx, Aml *retvar); void build_append_pcihp_resources(Aml *table, uint64_t io_addr, uint64_t io_len); +bool build_append_notification_callback(Aml *parent_scope, const PCIBus *b= us); =20 /* Called on reset */ void acpi_pcihp_reset(AcpiPciHpState *s); diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c index e3cc57b954..333099b8ba 100644 --- a/hw/acpi/pcihp.c +++ b/hw/acpi/pcihp.c @@ -39,6 +39,7 @@ #include "migration/vmstate.h" #include "qapi/error.h" #include "qom/qom-qobject.h" +#include "qobject/qnum.h" #include "trace.h" =20 #define ACPI_PCIHP_SIZE 0x0018 @@ -703,6 +704,63 @@ void build_append_pcihp_resources(Aml *scope /* \\_SB.= PCI0 */, aml_append(scope, dev); } =20 +bool build_append_notification_callback(Aml *parent_scope, const PCIBus *b= us) +{ + Aml *method; + PCIBus *sec; + QObject *bsel; + int nr_notifiers =3D 0; + GQueue *pcnt_bus_list =3D g_queue_new(); + + QLIST_FOREACH(sec, &bus->child, sibling) { + Aml *br_scope =3D aml_scope("S%.02X", sec->parent_dev->devfn); + if (pci_bus_is_root(sec)) { + continue; + } + nr_notifiers =3D nr_notifiers + + build_append_notification_callback(br_scope, sec); + /* + * add new child scope to parent + * and keep track of bus that have PCNT, + * bus list is used later to call children PCNTs from this level P= CNT + */ + if (nr_notifiers) { + g_queue_push_tail(pcnt_bus_list, sec); + aml_append(parent_scope, br_scope); + } + } + + /* + * Append PCNT method to notify about events on local and child buses. + * ps: hostbridge might not have hotplug (bsel) enabled but might have + * child bridges that do have bsel. + */ + method =3D aml_method("PCNT", 0, AML_NOTSERIALIZED); + + /* If bus supports hotplug select it and notify about local events */ + bsel =3D object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL= , NULL); + if (bsel) { + uint64_t bsel_val =3D qnum_get_uint(qobject_to(QNum, bsel)); + + aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); + aml_append(method, aml_call2("DVNT", aml_name("PCIU"), + aml_int(1))); /* Device Check */ + aml_append(method, aml_call2("DVNT", aml_name("PCID"), + aml_int(3))); /* Eject Request */ + nr_notifiers++; + } + + /* Notify about child bus events in any case */ + while ((sec =3D g_queue_pop_head(pcnt_bus_list))) { + aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn= )); + } + + aml_append(parent_scope, method); + qobject_unref(bsel); + g_queue_free(pcnt_bus_list); + return !!nr_notifiers; +} + const VMStateDescription vmstate_acpi_pcihp_pci_status =3D { .name =3D "acpi_pcihp_pci_status", .version_id =3D 1, diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 6ca2b34ef8..3275675e60 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -563,64 +563,6 @@ void build_append_pci_bus_devices(Aml *parent_scope, P= CIBus *bus) } } =20 -static bool build_append_notification_callback(Aml *parent_scope, - const PCIBus *bus) -{ - Aml *method; - PCIBus *sec; - QObject *bsel; - int nr_notifiers =3D 0; - GQueue *pcnt_bus_list =3D g_queue_new(); - - QLIST_FOREACH(sec, &bus->child, sibling) { - Aml *br_scope =3D aml_scope("S%.02X", sec->parent_dev->devfn); - if (pci_bus_is_root(sec)) { - continue; - } - nr_notifiers =3D nr_notifiers + - build_append_notification_callback(br_scope, sec); - /* - * add new child scope to parent - * and keep track of bus that have PCNT, - * bus list is used later to call children PCNTs from this level P= CNT - */ - if (nr_notifiers) { - g_queue_push_tail(pcnt_bus_list, sec); - aml_append(parent_scope, br_scope); - } - } - - /* - * Append PCNT method to notify about events on local and child buses. - * ps: hostbridge might not have hotplug (bsel) enabled but might have - * child bridges that do have bsel. - */ - method =3D aml_method("PCNT", 0, AML_NOTSERIALIZED); - - /* If bus supports hotplug select it and notify about local events */ - bsel =3D object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL= , NULL); - if (bsel) { - uint64_t bsel_val =3D qnum_get_uint(qobject_to(QNum, bsel)); - - aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); - aml_append(method, aml_call2("DVNT", aml_name("PCIU"), - aml_int(1))); /* Device Check */ - aml_append(method, aml_call2("DVNT", aml_name("PCID"), - aml_int(3))); /* Eject Request */ - nr_notifiers++; - } - - /* Notify about child bus events in any case */ - while ((sec =3D g_queue_pop_head(pcnt_bus_list))) { - aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn= )); - } - - aml_append(parent_scope, method); - qobject_unref(bsel); - g_queue_free(pcnt_bus_list); - return !!nr_notifiers; -} - /* * build_prt - Define interrupt routing rules * --=20 2.49.0