HV: vuart: move the vuart code to dm directory

As there is a requirement for conmunication between VMs on uart port,
but for Pre-launched VM, the only way is to create vuart for each VM and
connect them at hypervisor side. So, the vuart code should be moved from
/debug to /dm so that they can also be used in release version.
For the console related code, as no need to support in release version,
so leave them at debug directory.

Tracked-On: #2987
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/dm/vuart.h

@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 2013 Neel Natu <neel@freebsd.org>
+ * Copyright (c) 2018 Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef VUART_H
+#define VUART_H
+#include <types.h>
+#include <spinlock.h>
+#include <vm_config.h>
+
+#define RX_BUF_SIZE		256U
+#define TX_BUF_SIZE		8192U
+#define INVAILD_VUART_IDX	0xFFU
+
+#define COM1_BASE		0x3F8U
+#define COM2_BASE		0x2F8U
+#define COM3_BASE		0x3E8U
+#define COM4_BASE		0x2E8U
+#define INVALID_COM_BASE	0U
+
+#define COM1_IRQ		4U
+#define COM2_IRQ		3U
+#define COM3_IRQ		6U
+#define COM4_IRQ		7U
+
+struct fifo {
+	char *buf;
+	uint32_t rindex;	/* index to read from */
+	uint32_t windex;	/* index to write to */
+	uint32_t num;		/* number of characters in the fifo */
+	uint32_t size;		/* size of the fifo */
+};
+
+struct acrn_vuart {
+	uint8_t data;		/* Data register (R/W) */
+	uint8_t ier;		/* Interrupt enable register (R/W) */
+	uint8_t lcr;		/* Line control register (R/W) */
+	uint8_t mcr;		/* Modem control register (R/W) */
+	uint8_t lsr;		/* Line status register (R/W) */
+	uint8_t msr;		/* Modem status register (R/W) */
+	uint8_t fcr;		/* FIFO control register (W) */
+	uint8_t scr;		/* Scratch register (R/W) */
+	uint8_t dll;		/* Baudrate divisor latch LSB */
+	uint8_t dlh;		/* Baudrate divisor latch MSB */
+
+	struct fifo rxfifo;
+	struct fifo txfifo;
+	uint16_t port_base;
+	uint32_t irq;
+	char vuart_rx_buf[RX_BUF_SIZE];
+	char vuart_tx_buf[TX_BUF_SIZE];
+	bool thre_int_pending;	/* THRE interrupt pending */
+	bool active;
+	struct acrn_vuart *target_vu; /* Pointer to target vuart */
+	struct acrn_vm *vm;
+	spinlock_t lock;	/* protects all softc elements */
+};
+
+struct acrn_vuart *vm_console_vuart(struct acrn_vm *vm);
+void vuart_init(struct acrn_vm *vm, struct vuart_config *vu_config);
+void vuart_deinit(struct acrn_vm *vm);
+struct acrn_vuart *vuart_console_active(void);
+void vuart_console_tx_chars(struct acrn_vuart *vu);
+void vuart_console_rx_chars(struct acrn_vuart *vu);
+
+bool is_vuart_intx(struct acrn_vm *vm, uint32_t intx_pin);
+void vuart_set_property(const char *vuart_info);
+#endif /* VUART_H */