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DM USB: xHCI: add microframe index(MFINDEX) register emulation support

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Add microframe index register support, which is an important timing
component for isochronous transport.

Change-Id: I615664275b539cfb713d7795edd3f213b0302b92
Tracked-On:
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 2018-07-11 14:46:04 +08:00 committed by lijinxia
parent a49d483cd0
commit b9597d4fa8
1 changed files with 15 additions and 2 deletions
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17
devicemodel/hw/pci/xhci.c
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@ -374,6 +374,7 @@ struct pci_xhci_vdev {
int usb2_port_start;
int usb3_port_start;
uint8_t *native_assign_ports[USB_NATIVE_NUM_BUS];
struct timespec mf_prev_time; /* previous time of accessing MFINDEX */
};
/* portregs and devices arrays are set up to start from idx=1 */
@ -3055,13 +3056,22 @@ pci_xhci_dbregs_read(struct pci_xhci_vdev *xdev, uint64_t offset)
static uint64_t
pci_xhci_rtsregs_read(struct pci_xhci_vdev *xdev, uint64_t offset)
{
uint32_t value;
uint32_t value;
struct timespec t;
uint64_t time_diff;
offset -= xdev->rtsoff;
value = 0;
if (offset == XHCI_MFINDEX) {
value = xdev->rtsregs.mfindex;
clock_gettime(CLOCK_MONOTONIC, &t);
time_diff = (t.tv_sec - xdev->mf_prev_time.tv_sec) * 1000000
+ (t.tv_nsec - xdev->mf_prev_time.tv_nsec) / 1000;
xdev->mf_prev_time = t;
value = time_diff / 125;
if (value >= 1)
xdev->rtsregs.mfindex += value;
} else if (offset >= 0x20) {
int item;
uint32_t *p;
@ -3622,6 +3632,9 @@ pci_xhci_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
xdev->vid = XHCI_PCI_DEVICE_ID_DFLT;
xdev->pid = XHCI_PCI_VENDOR_ID_DFLT;
xdev->rtsregs.mfindex = 0;
clock_gettime(CLOCK_MONOTONIC, &xdev->mf_prev_time);
/* discover devices */
error = pci_xhci_parse_opts(xdev, opts);
if (error < 0)