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DM USB: xHCI: refine emulation for command XHCI_CMD_RS

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According to xHCI spec 5.4.1.1, this command hasn't ask to clear
PORTSC for R/S handling. So the PORTSC should always present the
physical usb bus status.

The old implementation changes the PORTSC according whether the
pci_xhci_dev_emu struct is allocated, it is not consistent with
spec and this patch is used to fix it.

Tracked-On: #1893
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Reviewed-by: Liang Yang <liang3.yang@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu 2018-12-12 12:01:39 +08:00 committed by wenlingz
parent e5c98e6d9a
commit 82659831f0
1 changed files with 0 additions and 44 deletions
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44
devicemodel/hw/pci/xhci.c
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@ -1107,50 +1107,10 @@ pci_xhci_reset(struct pci_xhci_vdev *xdev)
static uint32_t
pci_xhci_usbcmd_write(struct pci_xhci_vdev *xdev, uint32_t cmd)
{
int do_intr = 0;
int i;
if (cmd & XHCI_CMD_RS) {
do_intr = (xdev->opregs.usbcmd & XHCI_CMD_RS) == 0;
xdev->opregs.usbcmd |= XHCI_CMD_RS;
xdev->opregs.usbsts &= ~XHCI_STS_HCH;
xdev->opregs.usbsts |= XHCI_STS_PCD;
/* Queue port change event on controller run from stop */
if (do_intr)
for (i = 1; i <= XHCI_MAX_DEVS; i++) {
struct pci_xhci_dev_emu *dev;
struct pci_xhci_portregs *port;
struct xhci_trb evtrb;
dev = XHCI_DEVINST_PTR(xdev, i);
if (dev == NULL)
continue;
port = XHCI_PORTREG_PTR(xdev, i);
port->portsc |= XHCI_PS_CSC | XHCI_PS_CCS;
port->portsc &= ~XHCI_PS_PLS_MASK;
/*
* XHCI 4.19.3 USB2 RxDetect->Polling,
* USB3 Polling->U0
*/
if (dev->dev_ue->ue_usbver == 2)
port->portsc |=
XHCI_PS_PLS_SET(UPS_PORT_LS_POLL);
else
port->portsc |=
XHCI_PS_PLS_SET(UPS_PORT_LS_U0);
pci_xhci_set_evtrb(&evtrb, i,
XHCI_TRB_ERROR_SUCCESS,
XHCI_TRB_EVENT_PORT_STS_CHANGE);
if (pci_xhci_insert_event(xdev, &evtrb, 0) !=
XHCI_TRB_ERROR_SUCCESS)
break;
}
} else {
xdev->opregs.usbcmd &= ~XHCI_CMD_RS;
xdev->opregs.usbsts |= XHCI_STS_HCH;
@ -1167,10 +1127,6 @@ pci_xhci_usbcmd_write(struct pci_xhci_vdev *xdev, uint32_t cmd)
}
cmd &= ~(XHCI_CMD_CSS | XHCI_CMD_CRS);
if (do_intr)
pci_xhci_assert_interrupt(xdev);
return cmd;
}