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https://github.com/projectacrn/acrn-hypervisor.git
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6af47f249c
Add 'struct vpci_ops *ops' to 'struct vpci' so we have clearer structure:
- struct vpci: include struct vpci_ops pointing to different callback
functions for partition or sharing mode repsectively.
- struct pci_vdev: includes struct pci_vdev_ops to handle different vpci
functionalities:
hostbridge emulation
passthrough device BAR emulation
msi/msi-x remapping
This patch moves the code around but doesn't change the underlying logic
in terms of PCI spec handling. More detailed implementation:
- create new file partition_mode.c to house the implementation of partition mode
regarding the vpci layer.
- vpci.c: only keeps the abstract code which calls vpci->ops to functions
in partition_mode.c, and potentially to sharing_mode.c.
- the following functions are moved to partition_mode.c and renamed with
partition_mode prefix.
- vpci_init() -> partition_mode_vpci_init()
- vpci_cleanup() -> partition_mode_vpci_deinit()
- pci_cfg_io_write() -> partition_mode_cfgread()
- pci_cfg_io_read() -> partition_mode_cfgwrite()
Track-On: #1568
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
120 lines
3.6 KiB
C
120 lines
3.6 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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/* Virtual PCI device related operations (read/write, etc) */
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#include <hypervisor.h>
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#include "pci_priv.h"
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static struct pci_vdev *partition_mode_find_vdev(struct vpci *vpci, union pci_bdf vbdf)
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{
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struct vpci_vdev_array *vdev_array;
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struct pci_vdev *vdev;
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int i;
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vdev_array = vpci->vm->vm_desc->vpci_vdev_array;
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for (i = 0; i < vdev_array->num_pci_vdev; i++) {
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vdev = &vdev_array->vpci_vdev_list[i];
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if (vdev->vbdf.value == vbdf.value) {
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return vdev;
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}
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}
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return NULL;
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}
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static int partition_mode_vpci_init(struct vm *vm)
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{
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struct vpci_vdev_array *vdev_array;
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struct vpci *vpci = &vm->vpci;
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struct pci_vdev *vdev;
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int i;
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vdev_array = vm->vm_desc->vpci_vdev_array;
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for (i = 0; i < vdev_array->num_pci_vdev; i++) {
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vdev = &vdev_array->vpci_vdev_list[i];
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vdev->vpci = vpci;
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if ((vdev->ops != NULL) && (vdev->ops->init != NULL)) {
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if (vdev->ops->init(vdev) != 0U) {
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pr_err("%s() failed at PCI device (bdf %x)!", __func__,
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vdev->vbdf);
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}
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}
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}
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return 0;
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}
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static void partition_mode_vpci_deinit(struct vm *vm)
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{
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struct vpci_vdev_array *vdev_array;
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struct pci_vdev *vdev;
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int i;
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vdev_array = vm->vm_desc->vpci_vdev_array;
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for (i = 0; i < vdev_array->num_pci_vdev; i++) {
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vdev = &vdev_array->vpci_vdev_list[i];
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if ((vdev->ops != NULL) && (vdev->ops->deinit != NULL)) {
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if (vdev->ops->deinit(vdev) != 0U) {
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pr_err("vdev->ops->deinit failed!");
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}
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}
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}
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}
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static void partition_mode_cfgread(struct vpci *vpci, union pci_bdf vbdf,
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uint32_t offset, uint32_t bytes, uint32_t *val)
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{
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struct pci_vdev *vdev = partition_mode_find_vdev(vpci, vbdf);
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if ((vdev != NULL) && (vdev->ops != NULL)
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&& (vdev->ops->cfgread != NULL)) {
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(void)vdev->ops->cfgread(vdev, offset, bytes, val);
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}
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}
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static void partition_mode_cfgwrite(struct vpci *vpci, union pci_bdf vbdf,
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uint32_t offset, uint32_t bytes, uint32_t val)
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{
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struct pci_vdev *vdev = partition_mode_find_vdev(vpci, vbdf);
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if ((vdev != NULL) && (vdev->ops != NULL)
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&& (vdev->ops->cfgwrite != NULL)) {
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(void)vdev->ops->cfgwrite(vdev, offset, bytes, val);
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}
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}
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struct vpci_ops partition_mode_vpci_ops = {
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.init = partition_mode_vpci_init,
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.deinit = partition_mode_vpci_deinit,
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.cfgread = partition_mode_cfgread,
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.cfgwrite = partition_mode_cfgwrite,
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};
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