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https://github.com/projectacrn/acrn-hypervisor.git
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ff54fa2325
Add emulated PCI device configure for SOS to prepare for add support for customizing special pci operations for each emulated PCI device. Tracked-On: #3475 Signed-off-by: Li, Fei1 <fei1.li@intel.com>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <vm_config.h>
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#include <pci.h>
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#include <pci_dev.h>
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/*
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* In theory, emulated PCI device doesn't need to bind to physical PCI device.
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* However, now we need to search virtual PCI device by pBDF because we bind
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* post-launched VM PTDev with SOS's.
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* Remove the pBDF for emulated PCI device once we don't have this limit.
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*/
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struct acrn_vm_pci_dev_config sos_pci_devs[CONFIG_MAX_PCI_DEV_NUM] = {
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{
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.emu_type = PCI_DEV_TYPE_HVEMUL,
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.vbdf.bits = {.b = 0x00U, .d = 0x00U, .f = 0x00U},
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.pbdf.bits = {.b = 0x00U, .d = 0x00U, .f = 0x00U},
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},
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};
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/*
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* @pre pdev != NULL;
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*/
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static bool is_allocated_to_prelaunched_vm(struct pci_pdev *pdev)
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{
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bool found = false;
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uint16_t vmid;
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uint32_t pci_idx;
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struct acrn_vm_config *vm_config;
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struct acrn_vm_pci_dev_config *dev_config;
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for (vmid = 0U; vmid < CONFIG_MAX_VM_NUM; vmid++) {
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vm_config = get_vm_config(vmid);
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if (vm_config->load_order != PRE_LAUNCHED_VM) {
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continue;
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}
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for (pci_idx = 0U; pci_idx < vm_config->pci_dev_num; pci_idx++) {
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dev_config = &vm_config->pci_devs[pci_idx];
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if ((dev_config->emu_type == PCI_DEV_TYPE_PTDEV) &&
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bdf_is_equal(&dev_config->pbdf, &pdev->bdf)) {
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dev_config->pdev = pdev;
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found = true;
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break;
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}
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}
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if (found) {
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break;
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}
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}
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return found;
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}
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/*
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* @pre: pdev != NULL
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*/
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void fill_pci_dev_config(struct pci_pdev *pdev)
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{
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uint16_t vmid;
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uint32_t idx;
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struct acrn_vm_config *vm_config;
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struct acrn_vm_pci_dev_config *dev_config;
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if (!is_allocated_to_prelaunched_vm(pdev)) {
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for (vmid = 0U; vmid < CONFIG_MAX_VM_NUM; vmid++) {
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vm_config = get_vm_config(vmid);
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if (vm_config->load_order != SOS_VM) {
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continue;
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}
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/* TODO: revert me if we could split post-launched VM's PTDev from SOS's */
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for (idx = 0U; idx < SOS_EMULATED_PCI_DEV_NUM; idx++) {
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dev_config = &vm_config->pci_devs[idx];
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if (bdf_is_equal(&dev_config->pbdf, &pdev->bdf)) {
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dev_config->pdev = pdev;
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break;
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}
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}
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if (idx == SOS_EMULATED_PCI_DEV_NUM) {
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dev_config = &vm_config->pci_devs[vm_config->pci_dev_num];
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dev_config->emu_type = PCI_DEV_TYPE_PTDEV;
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dev_config->vbdf.value = pdev->bdf.value;
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dev_config->pbdf.value = pdev->bdf.value;
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dev_config->pdev = pdev;
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vm_config->pci_dev_num++;
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}
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}
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}
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}
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