OrgACRN
/
acrn-hypervisor
mirror of https://github.com/projectacrn/acrn-hypervisor.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ACRN: xHCI: Check the value of Ring Segment Size 

Flow Table 6-95 from xHCI spec, Ring Segment Size defines
the number of TRBs supported by the ring segment, valid
values for this field are 16 to 4096.

Tracked-On: #6981
Signed-off-by: Liu Long <long.liu@intel.com>
This commit is contained in:
Liu Long 2021-12-17 00:28:59 +08:00 committed by acrnsi-robot
parent 762b8dc849
commit 1cfcf464ca
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
devicemodel/hw/pci/xhci.c
View File

@ -1836,6 +1836,11 @@ pci_xhci_insert_event(struct pci_xhci_vdev *xdev,
erdp = rts->intrreg.erdp & ~0xF;
erst = &rts->erstba_p[rts->er_enq_seg];
if (erst->dwRingSegSize < 16 || erst->dwRingSegSize > 4096) {
UPRINTF(LDBG, "xHCI: ERSTSZ is not valiad: %u\n",
erst->dwRingSegSize);
return -EINVAL;
}
erdp_idx = (erdp - erst->qwRingSegBase) / sizeof(struct xhci_trb);
UPRINTF(LDBG, "insert event 0[%lx] 2[%x] 3[%x]\r\n"