1627
1634
&xhci->ir_set->erst_dequeue);
1637
static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
1638
u32 __iomem *addr, u8 major_revision)
1640
u32 temp, port_offset, port_count;
1643
if (major_revision > 0x03) {
1644
xhci_warn(xhci, "Ignoring unknown port speed, "
1645
"Ext Cap %p, revision = 0x%x\n",
1646
addr, major_revision);
1647
/* Ignoring port protocol we can't understand. FIXME */
1651
/* Port offset and count in the third dword, see section 7.2 */
1652
temp = xhci_readl(xhci, addr + 2);
1653
port_offset = XHCI_EXT_PORT_OFF(temp);
1654
port_count = XHCI_EXT_PORT_COUNT(temp);
1655
xhci_dbg(xhci, "Ext Cap %p, port offset = %u, "
1656
"count = %u, revision = 0x%x\n",
1657
addr, port_offset, port_count, major_revision);
1658
/* Port count includes the current port offset */
1659
if (port_offset == 0 || (port_offset + port_count - 1) > num_ports)
1660
/* WTF? "Valid values are ‘1’ to MaxPorts" */
1663
for (i = port_offset; i < (port_offset + port_count); i++) {
1664
/* Duplicate entry. Ignore the port if the revisions differ. */
1665
if (xhci->port_array[i] != 0) {
1666
xhci_warn(xhci, "Duplicate port entry, Ext Cap %p,"
1667
" port %u\n", addr, i);
1668
xhci_warn(xhci, "Port was marked as USB %u, "
1669
"duplicated as USB %u\n",
1670
xhci->port_array[i], major_revision);
1671
/* Only adjust the roothub port counts if we haven't
1672
* found a similar duplicate.
1674
if (xhci->port_array[i] != major_revision &&
1675
xhci->port_array[i] != (u8) -1) {
1676
if (xhci->port_array[i] == 0x03)
1677
xhci->num_usb3_ports--;
1679
xhci->num_usb2_ports--;
1680
xhci->port_array[i] = (u8) -1;
1682
/* FIXME: Should we disable the port? */
1685
xhci->port_array[i] = major_revision;
1686
if (major_revision == 0x03)
1687
xhci->num_usb3_ports++;
1689
xhci->num_usb2_ports++;
1691
/* FIXME: Should we disable ports not in the Extended Capabilities? */
1695
* Scan the Extended Capabilities for the "Supported Protocol Capabilities" that
1696
* specify what speeds each port is supposed to be. We can't count on the port
1697
* speed bits in the PORTSC register being correct until a device is connected,
1698
* but we need to set up the two fake roothubs with the correct number of USB
1699
* 3.0 and USB 2.0 ports at host controller initialization time.
1701
static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
1705
unsigned int num_ports;
1708
addr = &xhci->cap_regs->hcc_params;
1709
offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr));
1711
xhci_err(xhci, "No Extended Capability registers, "
1712
"unable to set up roothub.\n");
1716
num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
1717
xhci->port_array = kzalloc(sizeof(*xhci->port_array)*num_ports, flags);
1718
if (!xhci->port_array)
1722
* For whatever reason, the first capability offset is from the
1723
* capability register base, not from the HCCPARAMS register.
1724
* See section 5.3.6 for offset calculation.
1726
addr = &xhci->cap_regs->hc_capbase + offset;
1730
cap_id = xhci_readl(xhci, addr);
1731
if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL)
1732
xhci_add_in_port(xhci, num_ports, addr,
1733
(u8) XHCI_EXT_PORT_MAJOR(cap_id));
1734
offset = XHCI_EXT_CAPS_NEXT(cap_id);
1735
if (!offset || (xhci->num_usb2_ports + xhci->num_usb3_ports)
1739
* Once you're into the Extended Capabilities, the offset is
1740
* always relative to the register holding the offset.
1745
if (xhci->num_usb2_ports == 0 && xhci->num_usb3_ports == 0) {
1746
xhci_warn(xhci, "No ports on the roothubs?\n");
1749
xhci_dbg(xhci, "Found %u USB 2.0 ports and %u USB 3.0 ports.\n",
1750
xhci->num_usb2_ports, xhci->num_usb3_ports);
1752
* Note we could have all USB 3.0 ports, or all USB 2.0 ports.
1753
* Not sure how the USB core will handle a hub with no ports...
1755
if (xhci->num_usb2_ports) {
1756
xhci->usb2_ports = kmalloc(sizeof(*xhci->usb2_ports)*
1757
xhci->num_usb2_ports, flags);
1758
if (!xhci->usb2_ports)
1762
for (i = 0; i < num_ports; i++) {
1763
if (xhci->port_array[i] == 0x03 ||
1764
xhci->port_array[i] == 0 ||
1765
xhci->port_array[i] == -1)
1768
xhci->usb2_ports[port_index] =
1769
&xhci->op_regs->port_status_base +
1771
xhci_dbg(xhci, "USB 2.0 port at index %u, "
1773
xhci->usb2_ports[port_index]);
1777
if (xhci->num_usb3_ports) {
1778
xhci->usb3_ports = kmalloc(sizeof(*xhci->usb3_ports)*
1779
xhci->num_usb3_ports, flags);
1780
if (!xhci->usb3_ports)
1784
for (i = 0; i < num_ports; i++)
1785
if (xhci->port_array[i] == 0x03) {
1786
xhci->usb3_ports[port_index] =
1787
&xhci->op_regs->port_status_base +
1789
xhci_dbg(xhci, "USB 3.0 port at index %u, "
1791
xhci->usb3_ports[port_index]);
1631
1798
int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
added
removed
drivers/usb/host/xhci-mem.c
