From: Sergio Lopez <slp@redhat.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
qemu-devel@nongnu.org, Igor Mammedov <imammedo@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Richard Henderson <rth@twiddle.net>
Subject: Re: [PATCH v2 11/13] microvm: add acpi_dsdt_add_virtio() for x86
Date: Wed, 6 May 2020 09:27:15 +0200 [thread overview]
Message-ID: <20200506072715.woe4buwgrtdc7r6h@dritchie> (raw)
In-Reply-To: <20200505134305.22666-12-kraxel@redhat.com>
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On Tue, May 05, 2020 at 03:43:03PM +0200, Gerd Hoffmann wrote:
> Makes x86 linux kernel find virtio-mmio devices automatically.
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
> hw/i386/acpi-microvm.c | 51 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
Reviewed-by: Sergio Lopez <slp@redhat.com>
> diff --git a/hw/i386/acpi-microvm.c b/hw/i386/acpi-microvm.c
> index ce5ab86d642c..4d91ac9360ce 100644
> --- a/hw/i386/acpi-microvm.c
> +++ b/hw/i386/acpi-microvm.c
> @@ -21,6 +21,7 @@
> */
>
> #include "qemu/osdep.h"
> +#include "qemu/cutils.h"
> #include "qapi/error.h"
>
> #include "exec/memory.h"
> @@ -32,6 +33,7 @@
> #include "hw/boards.h"
> #include "hw/i386/fw_cfg.h"
> #include "hw/i386/microvm.h"
> +#include "hw/virtio/virtio-mmio.h"
>
> #include "acpi-common.h"
> #include "acpi-microvm.h"
> @@ -45,6 +47,54 @@ static void acpi_dsdt_add_power_button(Aml *scope)
> aml_append(scope, dev);
> }
>
> +static void acpi_dsdt_add_virtio(Aml *scope)
> +{
> + gchar *separator;
> + long int index;
> + BusState *bus;
> + BusChild *kid;
> +
> + bus = sysbus_get_default();
> + QTAILQ_FOREACH(kid, &bus->children, sibling) {
> + DeviceState *dev = kid->child;
> + Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO);
> +
> + if (obj) {
> + VirtIOMMIOProxy *mmio = VIRTIO_MMIO(obj);
> + VirtioBusState *mmio_virtio_bus = &mmio->bus;
> + BusState *mmio_bus = &mmio_virtio_bus->parent_obj;
> +
> + if (QTAILQ_EMPTY(&mmio_bus->children)) {
> + continue;
> + }
> + separator = g_strrstr(mmio_bus->name, ".");
> + if (!separator) {
> + continue;
> + }
> + if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) {
> + continue;
> + }
> +
> + uint32_t irq = VIRTIO_IRQ_BASE + index;
> + hwaddr base = VIRTIO_MMIO_BASE + index * 512;
> + hwaddr size = 512;
> +
> + Aml *dev = aml_device("VR%02u", (unsigned)index);
> + aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
> + aml_append(dev, aml_name_decl("_UID", aml_int(index)));
> + aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
> +
> + Aml *crs = aml_resource_template();
> + aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
> + aml_append(crs,
> + aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
> + AML_EXCLUSIVE, &irq, 1));
> + aml_append(dev, aml_name_decl("_CRS", crs));
> + aml_append(scope, dev);
> + }
> + }
> +}
> +
> static void
> build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
> MicrovmMachineState *mms)
> @@ -69,6 +119,7 @@ build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
> build_ged_aml(sb_scope, GED_DEVICE, HOTPLUG_HANDLER(mms->acpi_dev),
> GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
> acpi_dsdt_add_power_button(sb_scope);
> + acpi_dsdt_add_virtio(sb_scope);
> aml_append(dsdt, sb_scope);
>
> scope = aml_scope("\\");
> --
> 2.18.4
>
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next prev parent reply other threads:[~2020-05-06 7:29 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-05 13:42 [PATCH v2 00/13] microvm: add acpi support Gerd Hoffmann
2020-05-05 13:42 ` [PATCH v2 01/13] acpi: make build_madt() more generic Gerd Hoffmann
2020-05-05 13:54 ` Igor Mammedov
2020-05-05 13:42 ` [PATCH v2 02/13] acpi: create acpi-common.c and move madt code Gerd Hoffmann
2020-05-05 14:00 ` Igor Mammedov
2020-05-05 13:42 ` [PATCH v2 03/13] acpi: madt: skip pci override on pci-less systems (microvm) Gerd Hoffmann
2020-05-05 14:10 ` Igor Mammedov
2020-05-05 14:17 ` Philippe Mathieu-Daudé
2020-05-05 13:42 ` [PATCH v2 04/13] acpi: move acpi_build_facs to acpi-common.c Gerd Hoffmann
2020-05-05 13:49 ` Philippe Mathieu-Daudé
2020-05-05 14:16 ` Igor Mammedov
2020-05-05 13:42 ` [PATCH v2 05/13] acpi: move acpi_init_common_fadt_data " Gerd Hoffmann
2020-05-05 14:25 ` Igor Mammedov
2020-05-06 10:03 ` Gerd Hoffmann
2020-05-05 13:42 ` [PATCH v2 06/13] acpi: move acpi_align_size to acpi-common.h Gerd Hoffmann
2020-05-05 13:53 ` Philippe Mathieu-Daudé
2020-05-05 14:30 ` Igor Mammedov
2020-05-05 13:42 ` [PATCH v2 07/13] acpi: fadt: add hw-reduced sleep register support Gerd Hoffmann
2020-05-05 14:35 ` Igor Mammedov
2020-05-05 13:43 ` [PATCH v2 08/13] acpi: generic event device for x86 Gerd Hoffmann
2020-05-05 15:03 ` Igor Mammedov
2020-05-06 10:31 ` Gerd Hoffmann
2020-05-06 12:41 ` Igor Mammedov
2020-05-07 14:03 ` Gerd Hoffmann
2020-05-05 13:43 ` [PATCH v2 09/13] microvm: add minimal acpi support Gerd Hoffmann
2020-05-05 15:20 ` Igor Mammedov
2020-05-06 10:35 ` Gerd Hoffmann
2020-05-06 14:14 ` Igor Mammedov
2020-05-07 13:39 ` Gerd Hoffmann
2020-05-05 13:43 ` [PATCH v2 10/13] microvm: disable virtio-mmio cmdline hack Gerd Hoffmann
2020-05-05 15:22 ` Igor Mammedov
2020-05-05 13:43 ` [PATCH v2 11/13] microvm: add acpi_dsdt_add_virtio() for x86 Gerd Hoffmann
2020-05-06 7:27 ` Sergio Lopez [this message]
2020-05-05 13:43 ` [PATCH v2 12/13] microvm: make virtio irq base runtime configurable Gerd Hoffmann
2020-05-06 7:28 ` Sergio Lopez
2020-05-05 13:43 ` [PATCH v2 13/13] microvm/acpi: use GSI 16-23 for virtio Gerd Hoffmann
2020-05-06 7:28 ` Sergio Lopez
2020-05-05 14:04 ` [PATCH v2 00/13] microvm: add acpi support Michael S. Tsirkin
2020-05-05 14:16 ` Philippe Mathieu-Daudé
2020-05-06 7:25 ` Sergio Lopez
2020-05-06 11:46 ` Gerd Hoffmann
2020-05-06 11:50 ` Michael S. Tsirkin
2020-05-07 13:57 ` Gerd Hoffmann
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