139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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* Copyright (c) 2018 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef VPCI_H_
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#define VPCI_H_
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#include <spinlock.h>
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#include <pci.h>
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struct pci_vbar {
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enum pci_bar_type type;
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uint64_t size; /* BAR size */
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uint64_t base; /* BAR guest physical address */
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uint64_t base_hpa; /* BAR host physical address */
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uint32_t fixed; /* BAR fix memory type encoding */
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uint32_t mask; /* BAR size mask */
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};
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struct msix_table_entry {
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uint64_t addr;
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uint32_t data;
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uint32_t vector_control;
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};
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/* MSI capability structure */
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struct pci_msi {
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bool is_64bit;
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uint32_t capoff;
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uint32_t caplen;
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};
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/* MSI-X capability structure */
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struct pci_msix {
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struct msix_table_entry table_entries[CONFIG_MAX_MSIX_TABLE_NUM];
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uint64_t mmio_gpa;
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uint64_t mmio_hpa;
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uint64_t mmio_size;
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uint32_t capoff;
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uint32_t caplen;
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uint32_t table_bar;
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uint32_t table_offset;
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uint32_t table_count;
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};
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union pci_cfgdata {
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uint8_t data_8[PCIE_CONFIG_SPACE_SIZE];
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uint16_t data_16[PCIE_CONFIG_SPACE_SIZE >> 1U];
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uint32_t data_32[PCIE_CONFIG_SPACE_SIZE >> 2U];
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};
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struct pci_vdev;
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struct pci_vdev_ops {
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void (*init_vdev)(struct pci_vdev *vdev);
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void (*deinit_vdev)(struct pci_vdev *vdev);
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int32_t (*write_vdev_cfg)(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
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int32_t (*read_vdev_cfg)(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
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};
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struct pci_vdev {
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const struct acrn_vpci *vpci;
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/* The bus/device/function triple of the virtual PCI device. */
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union pci_bdf bdf;
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struct pci_pdev *pdev;
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union pci_cfgdata cfgdata;
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/* The bar info of the virtual PCI device. */
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uint32_t nr_bars; /* 6 for normal device, 2 for bridge, 1 for cardbus */
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struct pci_vbar vbars[PCI_BAR_COUNT];
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struct pci_msi msi;
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struct pci_msix msix;
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/* Pointer to corresponding PCI device's vm_config */
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struct acrn_vm_pci_dev_config *pci_dev_config;
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/* Pointer to corressponding operations */
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const struct pci_vdev_ops *vdev_ops;
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/* For SOS, if the device is latterly assigned to a UOS, we use this field to track the new owner. */
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struct pci_vdev *new_owner;
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};
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union pci_cfg_addr_reg {
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uint32_t value;
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struct {
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uint32_t reg_num : 8; /* BITs 0-7, Register Number (BITs 0-1, always reserve to 0) */
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uint32_t bdf : 16; /* BITs 8-23, BDF Number */
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uint32_t resv : 7; /* BITs 24-30, Reserved */
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uint32_t enable : 1; /* BITs 31, Enable bit */
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} bits;
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};
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struct acrn_vpci {
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spinlock_t lock;
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struct acrn_vm *vm;
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union pci_cfg_addr_reg addr;
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uint64_t pci_mmcfg_base;
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uint32_t pci_vdev_cnt;
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struct pci_vdev pci_vdevs[CONFIG_MAX_PCI_DEV_NUM];
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};
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extern const struct pci_vdev_ops vhostbridge_ops;
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void vpci_init(struct acrn_vm *vm);
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void vpci_cleanup(struct acrn_vm *vm);
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struct pci_vdev *pci_find_vdev(struct acrn_vpci *vpci, union pci_bdf vbdf);
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void vpci_set_ptdev_intr_info(struct acrn_vm *target_vm, uint16_t vbdf, uint16_t pbdf);
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void vpci_reset_ptdev_intr_info(struct acrn_vm *target_vm, uint16_t vbdf, uint16_t pbdf);
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#endif /* VPCI_H_ */
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