new file mode 100644
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_DEVICE_H__
+#define __ASM_GENERIC_DEVICE_H__
+
+enum device_type
+{
+ DEV_DT,
+#ifdef HAS_PCI
+ DEV_PCI,
+#endif
+};
+
+struct dev_archdata {
+ void *iommu; /* IOMMU private data */
+};
+
+/* struct device - The basic device structure */
+struct device
+{
+ enum device_type type;
+#ifdef CONFIG_HAS_DEVICE_TREE
+ struct dt_device_node *of_node; /* Used by drivers imported from Linux */
+#endif
+ struct dev_archdata archdata;
+ struct iommu_fwspec *iommu_fwspec; /* per-device IOMMU instance data */
+};
+
+typedef struct device device_t;
+
+#include <xen/device_tree.h>
+
+#ifdef HAS_PCI
+#define dev_is_pci(dev) ((dev)->type == DEV_PCI)
+#endif
+
+#define dev_is_dt(dev) ((dev)->type == DEV_DT)
+
+enum device_class
+{
+ DEVICE_SERIAL,
+ DEVICE_IOMMU,
+ DEVICE_IC,
+#ifdef HAS_PCI
+ DEVICE_PCI_HOSTBRIDGE,
+#endif
+ /* Use for error */
+ DEVICE_UNKNOWN,
+};
+
+struct device_desc {
+ /* Device name */
+ const char *name;
+ /* Device class */
+ enum device_class class;
+ /* List of devices supported by this driver */
+ const struct dt_device_match *dt_match;
+ /*
+ * Device initialization.
+ *
+ * -EAGAIN is used to indicate that device probing is deferred.
+ */
+ int (*init)(struct dt_device_node *dev, const void *data);
+};
+
+#ifdef CONFIG_ACPI
+
+struct acpi_device_desc {
+ /* Device name */
+ const char *name;
+ /* Device class */
+ enum device_class class;
+ /* type of device supported by the driver */
+ const int class_type;
+ /* Device initialization */
+ int (*init)(const void *data);
+};
+
+/**
+ * acpi_device_init - Initialize a device
+ * @class: class of the device (serial, network...)
+ * @data: specific data for initializing the device
+ *
+ * Return 0 on success.
+ */
+int acpi_device_init(enum device_class class,
+ const void *data, int class_type);
+
+#endif /* CONFIG_ACPI */
+
+/**
+ * device_init - Initialize a device
+ * @dev: device to initialize
+ * @class: class of the device (serial, network...)
+ * @data: specific data for initializing the device
+ *
+ * Return 0 on success.
+ */
+int device_init(struct dt_device_node *dev, enum device_class class,
+ const void *data);
+
+/**
+ * device_get_type - Get the type of the device
+ * @dev: device to match
+ *
+ * Return the device type on success or DEVICE_ANY on failure
+ */
+enum device_class device_get_class(const struct dt_device_node *dev);
+
+#define DT_DEVICE_START(_name, _namestr, _class) \
+static const struct device_desc __dev_desc_##_name __used \
+__section(".dev.info") = { \
+ .name = _namestr, \
+ .class = _class, \
+
+#define DT_DEVICE_END \
+};
+
+#ifdef CONFIG_ACPI
+
+#define ACPI_DEVICE_START(_name, _namestr, _class) \
+static const struct acpi_device_desc __dev_desc_##_name __used \
+__section(".adev.info") = { \
+ .name = _namestr, \
+ .class = _class, \
+
+#define ACPI_DEVICE_END \
+};
+
+#endif /* CONFIG_ACPI */
+
+#endif /* __ASM_GENERIC_DEVICE_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Arm, PPC and RISC-V use the same device.h thereby device.h was moved to asm-generic. Arm's device.h was taken as a base with the following changes: - #ifdef PCI related things. - #ifdef ACPI related things. - Rename #ifdef guards. - Add SPDX tag. Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com> --- It is still open question if device.h should be in asm-generic. Need more opinions. Changes in V2: - take ( as common ) device.h from Arm as PPC and RISC-V use it as a base. - #ifdef PCI related things. - #ifdef ACPI related things. - rename DEVICE_GIC to DEVIC_IC. - rename #ifdef guards. - switch Arm and PPC to generic device.h - add SPDX tag - update the commit message --- xen/include/asm-generic/device.h | 140 +++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 xen/include/asm-generic/device.h