import RT-Thread@9217865c without bsp, libcpu and components/net

components/drivers/virtio/virtio_console.h

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-11-11     GuEe-GUI     the first version
+ */
+
+#ifndef __VIRTIO_CONSOLE_H__
+#define __VIRTIO_CONSOLE_H__
+
+#include <rtdef.h>
+
+#include <virtio.h>
+
+#ifndef RT_USING_VIRTIO_CONSOLE_PORT_MAX_NR
+#define RT_USING_VIRTIO_CONSOLE_PORT_MAX_NR 4
+#endif
+
+#define VIRTIO_CONSOLE_QUEUE_DATA_RX    0
+#define VIRTIO_CONSOLE_QUEUE_DATA_TX    1
+#define VIRTIO_CONSOLE_QUEUE_CTRL_RX    2
+#define VIRTIO_CONSOLE_QUEUE_CTRL_TX    3
+#define VIRTIO_CONSOLE_QUEUE_SIZE       64
+
+/* Every port has data rx & tx, and port0 has ctrl rx & tx in multiport */
+#define VIRTIO_CONSOLE_PORT_QUEUE_INDEX(id, queue)  ((id) * 2 + (!!(id)) * 2 + (queue))
+
+#define VIRTIO_CONSOLE_PORT_BAD_ID      (~(rt_uint32_t)0)
+
+#define VIRTIO_CONSOLE_F_SIZE           0   /* Does host provide console size? */
+#define VIRTIO_CONSOLE_F_MULTIPORT      1   /* Does host provide multiple ports? */
+#define VIRTIO_CONSOLE_F_EMERG_WRITE    2   /* Does host support emergency write? */
+
+struct virtio_console_config
+{
+    rt_uint16_t cols;
+    rt_uint16_t rows;
+    rt_uint32_t max_nr_ports;
+    rt_uint32_t emerg_wr;
+} __attribute__((packed));
+
+struct virtio_console_control
+{
+    rt_uint32_t id;     /* Port number */
+    rt_uint16_t event;  /* The kind of control event */
+    rt_uint16_t value;  /* Extra information for the event */
+};
+
+enum virtio_console_control_event
+{
+    VIRTIO_CONSOLE_DEVICE_READY = 0,
+    VIRTIO_CONSOLE_PORT_ADD,
+    VIRTIO_CONSOLE_PORT_REMOVE,
+    VIRTIO_CONSOLE_PORT_READY,
+    VIRTIO_CONSOLE_CONSOLE_PORT,
+    VIRTIO_CONSOLE_RESIZE,
+    VIRTIO_CONSOLE_PORT_OPEN,
+    VIRTIO_CONSOLE_PORT_NAME,
+};
+
+struct virtio_console_resize
+{
+    rt_uint16_t cols;
+    rt_uint16_t rows;
+};
+
+struct virtio_console_device
+{
+    struct rt_device parent;
+
+    struct virtio_device virtio_dev;
+
+    rt_uint32_t console_id;
+    rt_size_t port_nr;
+    rt_size_t max_port_nr;
+    rt_list_t port_head;
+    struct virtio_console_config *config;
+
+    struct
+    {
+        rt_ubase_t tx_ctrl_paddr;
+        struct virtio_console_control rx_ctrl, tx_ctrl;
+    } info[VIRTIO_CONSOLE_QUEUE_SIZE];
+};
+
+rt_err_t rt_virtio_console_init(rt_ubase_t *mmio_base, rt_uint32_t irq);
+
+enum
+{
+    VIRTIO_DEVICE_CTRL_CONSOLE_PORT_CREATE  = 0x20,
+    VIRTIO_DEVICE_CTRL_CONSOLE_PORT_DESTROY,
+};
+
+#endif /* __VIRTIO_CONSOLE_H__ */