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acrn-hypervisor
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hv: code cleanup for vBAR writing 

This patch introduces vpci_update_one_vbar API to simplify
vBAR mapping/unmapping when vBAR writing.

v2: refine commit message

v4: refine commit message

Tracked-On: #4853

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yuan Liu 2020-08-06 20:01:22 +08:00 committed by wenlingz
parent 24fe34630d
commit 0f5ccab68e
3 changed files with 26 additions and 21 deletions
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23
hypervisor/dm/vpci/pci_pt.c
View File

@ -170,20 +170,11 @@ static void vdev_pt_deny_io_vbar(struct pci_vdev *vdev, uint32_t idx)
*/
void vdev_pt_write_vbar(struct pci_vdev *vdev, uint32_t idx, uint32_t val)
{
uint32_t update_idx = idx;
uint32_t offset = pci_bar_offset(idx);
struct pci_vbar *vbar = &vdev->vbars[idx];
switch (vbar->type) {
case PCIBAR_IO_SPACE:
vdev_pt_deny_io_vbar(vdev, update_idx);
if (val != ~0U) {
pci_vdev_write_vbar(vdev, idx, val);
vdev_pt_allow_io_vbar(vdev, update_idx);
} else {
pci_vdev_write_vcfg(vdev, offset, 4U, val);
vdev->vbars[update_idx].base_gpa = 0UL;
}
vpci_update_one_vbar(vdev, idx, val, vdev_pt_allow_io_vbar, vdev_pt_deny_io_vbar);
break;
case PCIBAR_NONE:
@ -191,17 +182,7 @@ void vdev_pt_write_vbar(struct pci_vdev *vdev, uint32_t idx, uint32_t val)
break;
default:
if (vbar->type == PCIBAR_MEM64HI) {
update_idx -= 1U;
}
vdev_pt_unmap_mem_vbar(vdev, update_idx);
if (val != ~0U) {
pci_vdev_write_vbar(vdev, idx, val);
vdev_pt_map_mem_vbar(vdev, update_idx);
} else {
pci_vdev_write_vcfg(vdev, offset, 4U, val);
vdev->vbars[update_idx].base_gpa = 0UL;
}
vpci_update_one_vbar(vdev, idx, val, vdev_pt_map_mem_vbar, vdev_pt_unmap_mem_vbar);
break;
}
}

20
hypervisor/dm/vpci/vpci.c
View File

@ -765,3 +765,23 @@ int32_t vpci_deassign_pcidev(struct acrn_vm *tgt_vm, struct acrn_assign_pcidev *
return ret;
}
void vpci_update_one_vbar(struct pci_vdev *vdev, uint32_t bar_idx, uint32_t val,
map_pcibar map_cb, unmap_pcibar unmap_cb)
{
struct pci_vbar *vbar = &vdev->vbars[bar_idx];
uint32_t offset = pci_bar_offset(bar_idx);
uint32_t update_idx = bar_idx;
if (vbar->type == PCIBAR_MEM64HI) {
update_idx -= 1U;
}
unmap_cb(vdev, update_idx);
if (val != ~0U) {
pci_vdev_write_vbar(vdev, bar_idx, val);
map_cb(vdev, update_idx);
} else {
pci_vdev_write_vcfg(vdev, offset, 4U, val);
vdev->vbars[update_idx].base_gpa = 0UL;
}
}

4
hypervisor/dm/vpci/vpci_priv.h
View File

@ -158,4 +158,8 @@ uint32_t pci_vdev_read_vbar(const struct pci_vdev *vdev, uint32_t idx);
void pci_vdev_write_vbar(struct pci_vdev *vdev, uint32_t idx, uint32_t val);
void vdev_pt_hide_sriov_cap(struct pci_vdev *vdev);
typedef void (*map_pcibar)(struct pci_vdev *vdev, uint32_t bar_idx);
typedef void (*unmap_pcibar)(struct pci_vdev *vdev, uint32_t bar_idx);
void vpci_update_one_vbar(struct pci_vdev *vdev, uint32_t bar_idx, uint32_t val, map_pcibar map_cb, unmap_pcibar unmap_cb);
#endif /* VPCI_PRIV_H_ */