hv: create new file core.c and pci.c

- move the functions to access physical PCI configuration space from
  pci_pt.c to the new file dm/hw/pci.c, so they can be accessed in
  sharing mode as well. The new folder dm/hw is created in order to
  move APIs talking to physical PCI devices out of dm/vpci.
- move the common vpci code from header file pci_priv.h to core.c.
- move file include/dm/vpci/vpci.h one level up. It seems the folder
  include/dm/vpci is not necessary.
- This patch only moves code around, and doesn't make any logical
  changes. Besides removes the static keyword from pci_pdev_read_cfg()
  and pci_pdev_write_cfg()

Tracked-On: #1568
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/dm/vpci.h

@@ -0,0 +1,109 @@
+/*-
+* Copyright (c) 2011 NetApp, Inc.
+* 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 VPCI_H_
+#define VPCI_H_
+
+#define PCI_BAR_COUNT    0x6U
+#define PCI_REGMAX       0xFFU
+
+struct pci_vdev;
+struct pci_vdev_ops {
+	int (*init)(struct pci_vdev *vdev);
+
+	int (*deinit)(struct pci_vdev *vdev);
+
+	int (*cfgwrite)(struct pci_vdev *vdev, uint32_t offset,
+		uint32_t bytes, uint32_t val);
+
+	int (*cfgread)(struct pci_vdev *vdev, uint32_t offset,
+		uint32_t bytes, uint32_t *val);
+};
+
+union pci_bdf {
+	uint16_t value;
+
+	struct {
+		uint8_t f : 3; /* BITs 0-2 */
+		uint8_t d : 5; /* BITs 3-7 */
+		uint8_t b; /* BITs 8-15 */
+	} bits;
+};
+
+enum pci_bar_type {
+	PCIBAR_NONE = 0,
+	PCIBAR_MEM32,
+	PCIBAR_MEM64,
+};
+
+struct pci_bar {
+	uint64_t base;
+	uint64_t size;
+	enum pci_bar_type type;
+};
+
+struct pci_pdev {
+	/* The bar info of the physical PCI device. */
+	struct pci_bar bar[PCI_BAR_COUNT];
+
+	/* The bus/device/function triple of the physical PCI device. */
+	union pci_bdf bdf;
+};
+
+struct pci_vdev {
+	struct pci_vdev_ops *ops;
+	struct vpci *vpci;
+	/* The bus/device/function triple of the virtual PCI device. */
+	union pci_bdf vbdf;
+
+	struct pci_pdev pdev;
+
+	uint8_t cfgdata[PCI_REGMAX + 1U];
+
+	/* The bar info of the virtual PCI device. */
+	struct pci_bar bar[PCI_BAR_COUNT];
+};
+
+struct pci_addr_info {
+	union pci_bdf cached_bdf;
+	uint32_t cached_reg, cached_enable;
+};
+
+struct vpci {
+	struct vm *vm;
+	struct pci_addr_info addr_info;
+};
+
+extern struct pci_vdev_ops pci_ops_vdev_hostbridge;
+extern struct pci_vdev_ops pci_ops_vdev_pt;
+
+void vpci_init(struct vm *vm);
+void vpci_cleanup(struct vm *vm);
+
+#endif /* VPCI_H_ */