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hv: initialize SRIOV VF device

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create new pdev and vdev structures for a SRIOV VF device initialization

Tracked-On: #4433

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yuan Liu 2020-03-02 13:57:59 +08:00 committed by wenlingz
parent 176cb31c31
commit d54deca87a
3 changed files with 51 additions and 9 deletions
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4
hypervisor/dm/vpci/pci_pt.c
View File

@ -351,6 +351,9 @@ void init_vdev_pt(struct pci_vdev *vdev, bool is_pf_vdev)
{
uint16_t pci_command;
if (vdev->phyfun != NULL) {
init_sriov_vf_vdev(vdev);
} else {
init_bars(vdev, is_pf_vdev);
if (is_prelaunched_vm(vdev->vpci->vm) && (!is_pf_vdev)) {
pci_command = (uint16_t)pci_pdev_read_cfg(vdev->pdev->bdf, PCIR_COMMAND, 2U);
@ -359,6 +362,7 @@ void init_vdev_pt(struct pci_vdev *vdev, bool is_pf_vdev)
pci_command |= 0x400U;
pci_pdev_write_cfg(vdev->pdev->bdf, PCIR_COMMAND, 2U, pci_command);
}
}
}
/*

1
hypervisor/dm/vpci/vpci_priv.h
View File

@ -160,6 +160,7 @@ void init_vsriov(struct pci_vdev *vdev);
void read_sriov_cap_reg(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
void write_sriov_cap_reg(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
uint32_t sriov_bar_offset(const struct pci_vdev *vdev, uint32_t bar_idx);
void init_sriov_vf_vdev(struct pci_vdev *vdev);
uint32_t pci_vdev_read_cfg(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes);
void pci_vdev_write_cfg(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);

43
hypervisor/dm/vpci/vsriov.c
View File

@ -30,6 +30,7 @@
#include <vm.h>
#include <ptdev.h>
#include <vpci.h>
#include <pci_dev.h>
#include <logmsg.h>
#include "vpci_priv.h"
@ -82,9 +83,36 @@ static void init_sriov_vf_bar(struct pci_vdev *pf_vdev)
*/
static void create_vf(struct pci_vdev *pf_vdev, union pci_bdf vf_bdf)
{
/* Implementation in next patch */
(void)pf_vdev;
(void)vf_bdf;
struct pci_pdev *vf_pdev;
struct pci_vdev *vf_vdev = NULL;
/*
* Per VT-d 8.3.3, the VFs are under the scope of the same
* remapping unit as the associated PF when SRIOV is enabled.
*/
vf_pdev = init_pdev(vf_bdf.value, pf_vdev->pdev->drhd_index);
if (vf_pdev != NULL) {
struct acrn_vm_pci_dev_config *dev_cfg;
dev_cfg = init_one_dev_config(vf_pdev);
if (dev_cfg != NULL) {
vf_vdev = vpci_init_vdev(&pf_vdev->vpci->vm->vpci, dev_cfg, pf_vdev);
}
}
/*
* if a VF vdev failed to be created, the VF number is less than requested number
* and the requested VF physical devices are ready at this time, clear VF_ENABLE.
*/
if (vf_vdev == NULL) {
uint16_t control;
control = read_sriov_reg(pf_vdev, PCIR_SRIOV_CONTROL);
control &= (~PCIM_SRIOV_VF_ENABLE);
pci_pdev_write_cfg(pf_vdev->bdf, pf_vdev->sriov.capoff + PCIR_SRIOV_CONTROL, 2U, control);
pr_err("PF %x:%x.%x can't creat VF, unset VF_ENABLE",
pf_vdev->bdf.bits.b, pf_vdev->bdf.bits.d, pf_vdev->bdf.bits.f);
}
}
/**
@ -242,3 +270,12 @@ uint32_t sriov_bar_offset(const struct pci_vdev *vdev, uint32_t bar_idx)
{
return (vdev->sriov.capoff + PCIR_SRIOV_VF_BAR_OFF + (bar_idx << 2U));
}
/**
* @pre vdev != NULL
*/
void init_sriov_vf_vdev(struct pci_vdev *vdev)
{
/* Implementation in next path */
(void)vdev;
}