[v1,08/57] xen/riscv: introduce asm/device.h

Commit Message

Oleksii Kurochko Aug. 16, 2023, 10:19 a.m. UTC

Signed-off-by: Oleksii Kurochko <[e-mail]>
---
 xen/arch/riscv/include/asm/device.h | 55 +++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/device.h

Patch

diff --git a/xen/arch/riscv/include/asm/device.h b/xen/arch/riscv/include/asm/device.h
new file mode 100644
index 0000000000..e58178517a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/device.h
@@ -0,0 +1,55 @@ 
+#ifndef __ASM_RISCV_DEVICE_H__
+#define __ASM_RISCV_DEVICE_H__
+
+struct dt_device_node;
+
+enum device_type
+{
+    DEV_DT,
+    DEV_PCI,
+};
+
+struct device {
+    enum device_type type;
+#ifdef CONFIG_HAS_DEVICE_TREE
+    struct dt_device_node *of_node; /* Used by drivers imported from Linux */
+#endif
+};
+
+enum device_class
+{
+    DEVICE_SERIAL,
+    DEVICE_IOMMU,
+    DEVICE_GIC,
+    DEVICE_PCI_HOSTBRIDGE,
+    /* 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);
+};
+
+typedef struct device device_t;
+
+#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                                               \
+};
+
+#endif /* __ASM_RISCV_DEVICE_H__ */
\ No newline at end of file