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Re: [Qemu-devel] [PATCH 2/2] hw/vfio/platform: Add Qualcomm Technologies
From: |
Eric Auger |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] hw/vfio/platform: Add Qualcomm Technologies, Inc HiDMA device support |
Date: |
Mon, 1 Feb 2016 15:37:12 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 |
Hi Shanker, Vikram,
On 01/30/2016 12:00 AM, Shanker Donthineni wrote:
> From: Vikram Sethi <address@hidden>
>
> This patch introduces a Qualcomm Technologies, Inc HiDMA
> device and allows the instantiation of the vfio-qcom-hidma
> device from the QEMU command line
> (-device vfio-qcom-hidma,host="<device>").
>
> A device tree node is created for the guest containing compat,
> dma-coherent, reg and interrupts properties.
>
> Signed-off-by: Vikram Sethi <address@hidden>
> Signed-off-by: Shanker Donthineni <address@hidden>
> ---
> hw/arm/sysbus-fdt.c | 2 ++
> hw/vfio/Makefile.objs | 1 +
> hw/vfio/qcom-hidma.c | 57
> +++++++++++++++++++++++++++++++++++++++
> include/hw/vfio/vfio-qcom-hidma.h | 49 +++++++++++++++++++++++++++++++++
> 4 files changed, 109 insertions(+)
> create mode 100644 hw/vfio/qcom-hidma.c
> create mode 100644 include/hw/vfio/vfio-qcom-hidma.h
>
> diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
> index 6ee7af2..4a7419e 100644
> --- a/hw/arm/sysbus-fdt.c
> +++ b/hw/arm/sysbus-fdt.c
> @@ -28,6 +28,7 @@
> #include "sysemu/sysemu.h"
> #include "hw/vfio/vfio-platform.h"
> #include "hw/vfio/vfio-calxeda-xgmac.h"
> +#include "hw/vfio/vfio-qcom-hidma.h"
> #include "hw/arm/fdt.h"
>
> /*
> @@ -126,6 +127,7 @@ fail_reg:
> /* list of supported dynamic sysbus devices */
> static const NodeCreationPair add_fdt_node_functions[] = {
> {TYPE_VFIO_CALXEDA_XGMAC, add_generic_platform_fdt_node},
> + {TYPE_VFIO_QCOM_HIDMA, add_generic_platform_fdt_node},
> {"", NULL}, /* last element */
> };
>
> diff --git a/hw/vfio/Makefile.objs b/hw/vfio/Makefile.objs
> index d324863..9bcb093 100644
> --- a/hw/vfio/Makefile.objs
> +++ b/hw/vfio/Makefile.objs
> @@ -3,4 +3,5 @@ obj-$(CONFIG_SOFTMMU) += common.o
> obj-$(CONFIG_PCI) += pci.o pci-quirks.o
> obj-$(CONFIG_SOFTMMU) += platform.o
> obj-$(CONFIG_SOFTMMU) += calxeda-xgmac.o
> +obj-$(CONFIG_SOFTMMU) += qcom-hidma.o
> endif
> diff --git a/hw/vfio/qcom-hidma.c b/hw/vfio/qcom-hidma.c
> new file mode 100644
> index 0000000..04acbd8
> --- /dev/null
> +++ b/hw/vfio/qcom-hidma.c
> @@ -0,0 +1,57 @@
> +/*
> + * Qualcomm Technologies, Inc VFIO HiDMA platform device
> + *
> + * Copyright (c) 2016, The Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#include "hw/vfio/vfio-qcom-hidma.h"
> +
> +static void qcom_hidma_realize(DeviceState *dev, Error **errp)
> +{
> + VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(dev);
> + VFIOQcomHidmaDeviceClass *k = VFIO_QCOM_HIDMA_DEVICE_GET_CLASS(dev);
> +
> + vdev->compat = g_strdup("qcom,hidma");
> +
> + k->parent_realize(dev, errp);
> +}
> +
> +static const VMStateDescription vfio_platform_vmstate = {
> + .name = TYPE_VFIO_QCOM_HIDMA,
> + .unmigratable = 1,
> +};
> +
> +static void vfio_qcom_hidma_class_init(ObjectClass *klass, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(klass);
> + VFIOQcomHidmaDeviceClass *vcxc = VFIO_QCOM_HIDMA_DEVICE_CLASS(klass);
> +
> + vcxc->parent_realize = dc->realize;
> + dc->realize = qcom_hidma_realize;
> + dc->desc = "VFIO QCOM HIDMA";
If I am not wrong you miss the dc->vmsd = &vfio_platform_vmstate
(VMStateDescription attachement)
This will cause an error with CLANG - I got that one already, reported
by Peter ;-) -
error: unused variable
'vfio_platform_vmstate' [-Werror,-Wunused-const-variable]
static const VMStateDescription vfio_platform_vmstate = {
> +}
> +
> +static const TypeInfo vfio_qcom_hidma_dev_info = {
> + .name = TYPE_VFIO_QCOM_HIDMA,
> + .parent = TYPE_VFIO_PLATFORM,
> + .instance_size = sizeof(VFIOQcomHidmaDevice),
> + .class_init = vfio_qcom_hidma_class_init,
> + .class_size = sizeof(VFIOQcomHidmaDeviceClass),
> +};
> +
> +static void register_qcom_hidma_dev_type(void)
> +{
> + type_register_static(&vfio_qcom_hidma_dev_info);
> +}
> +
> +type_init(register_qcom_hidma_dev_type)
> diff --git a/include/hw/vfio/vfio-qcom-hidma.h
> b/include/hw/vfio/vfio-qcom-hidma.h
> new file mode 100644
> index 0000000..a7cc8e6
> --- /dev/null
> +++ b/include/hw/vfio/vfio-qcom-hidma.h
> @@ -0,0 +1,49 @@
> +/*
> + * Qualcomm Technologies, Inc VFIO HiDMA platform device
> + *
> + * Copyright (c) 2016, The Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#ifndef HW_VFIO_VFIO_QCOM_HIDMA_H
> +#define HW_VFIO_VFIO_QCOM_HIDMA_H
> +
> +#include "hw/vfio/vfio-platform.h"
> +
> +#define TYPE_VFIO_QCOM_HIDMA "vfio-qcom-hidma"
> +
> +/**
> + * This device exposes:
> + * - two MMIO regions corresponding to its register space
> + * - 1 IRQ
level sensitive?
Best Regards
Eric
> + */
> +typedef struct VFIOQcomHidmaDevice {
> + VFIOPlatformDevice vdev;
> +} VFIOQcomHidmaDevice;
> +
> +typedef struct VFIOQcomHidmaDeviceClass {
> + /*< private >*/
> + VFIOPlatformDeviceClass parent_class;
> + /*< public >*/
> + DeviceRealize parent_realize;
> +} VFIOQcomHidmaDeviceClass;
> +
> +#define VFIO_QCOM_HIDMA_DEVICE(obj) \
> + OBJECT_CHECK(VFIOQcomHidmaDevice, (obj), TYPE_VFIO_QCOM_HIDMA)
> +#define VFIO_QCOM_HIDMA_DEVICE_CLASS(klass) \
> + OBJECT_CLASS_CHECK(VFIOQcomHidmaDeviceClass, (klass), \
> + TYPE_VFIO_QCOM_HIDMA)
> +#define VFIO_QCOM_HIDMA_DEVICE_GET_CLASS(obj) \
> + OBJECT_GET_CLASS(VFIOQcomHidmaDeviceClass, (obj), \
> + TYPE_VFIO_QCOM_HIDMA)
> +
> +#endif
>
- Re: [Qemu-devel] [PATCH 2/2] hw/vfio/platform: Add Qualcomm Technologies, Inc HiDMA device support,
Eric Auger <=