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[Qemu-devel] [PATCH 2/2] hw/vfio/platform: Add Qualcomm Technologies, In
From: |
Shanker Donthineni |
Subject: |
[Qemu-devel] [PATCH 2/2] hw/vfio/platform: Add Qualcomm Technologies, Inc HiDMA device support |
Date: |
Fri, 29 Jan 2016 17:00:05 -0600 |
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";
+}
+
+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
+ */
+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
--
Qualcomm Technologies, Inc. on behalf
of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc.
is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.