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Wed, 16 Sep 2020 12:02:48 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzRtaGUG63YSLcFclB99FFMieahGetwKElCpz5pCEKpzCrKMNeYoeFIcwOCQnWemJFRlIineHfeGyuhYlfPRRs= X-Received: by 2002:a25:c54f:: with SMTP id v76mr36401400ybe.321.1600282967805; Wed, 16 Sep 2020 12:02:47 -0700 (PDT) MIME-Version: 1.0 References: <20200818215227.181654-1-jusual@redhat.com> <20200818215227.181654-3-jusual@redhat.com> <20200821140815.288f14db@redhat.com> In-Reply-To: <20200821140815.288f14db@redhat.com> From: Julia Suvorova Date: Wed, 16 Sep 2020 21:02:36 +0200 Message-ID: Subject: Re: [RFC PATCH v2 2/4] hw/i386/acpi-build: Add ACPI PCI hot-plug methods to q35 To: Igor Mammedov Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsuvorov@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsuvorov@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 02:16:02 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Gerd Hoffmann , QEMU Developers , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, Aug 21, 2020 at 2:08 PM Igor Mammedov wrote: > > On Tue, 18 Aug 2020 23:52:25 +0200 > Julia Suvorova wrote: > > > Implement notifications and gpe to support q35 ACPI PCI hot-plug. > > Use 0xcc4 - 0xcd7 range for 'acpi-pci-hotplug' io ports. > > in addition to comment from Philippe > > > > > > Signed-off-by: Julia Suvorova > > --- > > include/hw/acpi/pcihp.h | 3 ++- > > hw/acpi/pcihp.c | 10 ++++++---- > > hw/acpi/piix4.c | 2 +- > > hw/i386/acpi-build.c | 25 ++++++++++++++----------- > > 4 files changed, 23 insertions(+), 17 deletions(-) > > > > diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h > > index 8bc4a4c01d..1e9d246f57 100644 > > --- a/include/hw/acpi/pcihp.h > > +++ b/include/hw/acpi/pcihp.h > > @@ -54,7 +54,8 @@ typedef struct AcpiPciHpState { > > } AcpiPciHpState; > > > > void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root, > > - MemoryRegion *address_space_io, bool bridges_enabled); > > + MemoryRegion *address_space_io, bool bridges_enabled, > > + bool is_piix4); > > > > void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev, > > DeviceState *dev, Error **errp); > > diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c > > index 9e31ab2da4..9a35ed6c83 100644 > > --- a/hw/acpi/pcihp.c > > +++ b/hw/acpi/pcihp.c > > @@ -38,7 +38,8 @@ > > #include "qom/qom-qobject.h" > > #include "trace.h" > > > > -#define ACPI_PCIHP_ADDR 0xae00 > > +#define ACPI_PCIHP_ADDR_PIIX4 0xae00 > > +#define ACPI_PCIHP_ADDR_Q35 0x0cc4 > > #define ACPI_PCIHP_SIZE 0x0014 > > #define PCI_UP_BASE 0x0000 > > #define PCI_DOWN_BASE 0x0004 > > @@ -359,12 +360,13 @@ static const MemoryRegionOps acpi_pcihp_io_ops = { > > }; > > > > void acpi_pcihp_init(Object *owner, AcpiPciHpState *s, PCIBus *root_bus, > > - MemoryRegion *address_space_io, bool bridges_enabled) > > + MemoryRegion *address_space_io, bool bridges_enabled, > > + bool is_piix4) > > { > > s->io_len = ACPI_PCIHP_SIZE; > > - s->io_base = ACPI_PCIHP_ADDR; > > + s->io_base = is_piix4 ? ACPI_PCIHP_ADDR_PIIX4 : ACPI_PCIHP_ADDR_Q35; > > > > - s->root= root_bus; > > + s->root = root_bus; > > s->legacy_piix = !bridges_enabled; > > > > memory_region_init_io(&s->io, owner, &acpi_pcihp_io_ops, s, > > diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c > > index cdfa0e2998..1f27bfbd06 100644 > > --- a/hw/acpi/piix4.c > > +++ b/hw/acpi/piix4.c > > @@ -596,7 +596,7 @@ static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, > > memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe); > > > > acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent, > > - s->use_acpi_hotplug_bridge); > > + s->use_acpi_hotplug_bridge, true); > > > > s->cpu_hotplug_legacy = true; > > object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy", > > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > > index b7bcbbbb2a..f3cd52bd06 100644 > > --- a/hw/i386/acpi-build.c > > +++ b/hw/i386/acpi-build.c > > @@ -201,10 +201,6 @@ static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) > > /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ > > pm->fadt.rev = 1; > > pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; > > - pm->pcihp_io_base = > > - object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); > > - pm->pcihp_io_len = > > - object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); > > } > > if (lpc) { > > struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, > > @@ -214,6 +210,10 @@ static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) > > pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; > > pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; > > } > > + pm->pcihp_io_base = > > + object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); > > + pm->pcihp_io_len = > > + object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); > > > > /* The above need not be conditional on machine type because the reset port > > * happens to be the same on PIIX (pc) and ICH9 (q35). */ > > @@ -472,7 +472,7 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, > > QLIST_FOREACH(sec, &bus->child, sibling) { > > int32_t devfn = sec->parent_dev->devfn; > > > > - if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) { > > + if (pci_bus_is_root(sec)) { > Does pcie bus on hostbridge fall into pci_bus_is_express() categiry or not? I don't understand why it's there in the first place. pci_bus_is_root() check is for pxb, but pci_bus_is_express() is useless because everything is under 'if (pcihp_bridge_en) {', which means that no pcie bus will get there (before this patch). > > continue; > > } > > > > @@ -1368,7 +1368,7 @@ static void build_piix4_isa_bridge(Aml *table) > > aml_append(table, scope); > > } > > > > -static void build_piix4_pci_hotplug(Aml *table) > > +static void build_i386_pci_hotplug(Aml *table, uint64_t pcihp_addr) > > { > > Aml *scope; > > Aml *field; > > @@ -1377,20 +1377,22 @@ static void build_piix4_pci_hotplug(Aml *table) > > scope = aml_scope("_SB.PCI0"); > > > > aml_append(scope, > > - aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08)); > > + aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr), 0x08)); > > field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); > > aml_append(field, aml_named_field("PCIU", 32)); > > aml_append(field, aml_named_field("PCID", 32)); > > aml_append(scope, field); > > > > aml_append(scope, > > - aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04)); > > + aml_operation_region("SEJ", AML_SYSTEM_IO, > > + aml_int(pcihp_addr + 0x08), 0x04)); > ^^^^ > how about turning this offset into macro? > > > field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); > > aml_append(field, aml_named_field("B0EJ", 32)); > > aml_append(scope, field); > > > > aml_append(scope, > > - aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04)); > > + aml_operation_region("BNMR", AML_SYSTEM_IO, > > + aml_int(pcihp_addr + 0x10), 0x04)); > ditto > > > field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); > > aml_append(field, aml_named_field("BNUM", 32)); > > aml_append(scope, field); > > @@ -1504,7 +1506,6 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > > build_hpet_aml(dsdt); > > build_piix4_isa_bridge(dsdt); > > build_isa_devices_aml(dsdt); > > - build_piix4_pci_hotplug(dsdt); > > build_piix4_pci0_int(dsdt); > > } else { > > sb_scope = aml_scope("_SB"); > > @@ -1526,6 +1527,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > > } > > } > > > > + build_i386_pci_hotplug(dsdt, pm->pcihp_io_base); > > + > > if (pcmc->legacy_cpu_hotplug) { > > build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); > > } else { > > @@ -1546,7 +1549,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, > > { > > aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); > > > > - if (misc->is_piix4) { > > + if (misc->is_piix4 || pm->pcihp_bridge_en) { > > method = aml_method("_E01", 0, AML_NOTSERIALIZED); > > aml_append(method, > > aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); >