forked from Minki/linux
Merge branch 'for-usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into work
This commit is contained in:
Greg Kroah-Hartman
commit
8244272341
@ -229,6 +229,13 @@ void xhci_ring_device(struct xhci_hcd *xhci, int slot_id)
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static void xhci_disable_port(struct xhci_hcd *xhci, u16 wIndex,
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u32 __iomem *addr, u32 port_status)
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{
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/* Don't allow the USB core to disable SuperSpeed ports. */
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if (xhci->port_array[wIndex] == 0x03) {
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xhci_dbg(xhci, "Ignoring request to disable "
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"SuperSpeed port.\n");
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return;
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}
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/* Write 1 to disable the port */
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xhci_writel(xhci, port_status | PORT_PE, addr);
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port_status = xhci_readl(xhci, addr);
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@ -1443,6 +1443,13 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
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xhci->dcbaa = NULL;
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scratchpad_free(xhci);
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xhci->num_usb2_ports = 0;
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xhci->num_usb3_ports = 0;
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kfree(xhci->usb2_ports);
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kfree(xhci->usb3_ports);
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kfree(xhci->port_array);
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xhci->page_size = 0;
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xhci->page_shift = 0;
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xhci->bus_suspended = 0;
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@ -1627,6 +1634,161 @@ static void xhci_set_hc_event_deq(struct xhci_hcd *xhci)
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&xhci->ir_set->erst_dequeue);
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}
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static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
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u32 __iomem *addr, u8 major_revision)
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{
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u32 temp, port_offset, port_count;
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int i;
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if (major_revision > 0x03) {
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xhci_warn(xhci, "Ignoring unknown port speed, "
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"Ext Cap %p, revision = 0x%x\n",
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addr, major_revision);
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/* Ignoring port protocol we can't understand. FIXME */
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return;
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}
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/* Port offset and count in the third dword, see section 7.2 */
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temp = xhci_readl(xhci, addr + 2);
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port_offset = XHCI_EXT_PORT_OFF(temp);
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port_count = XHCI_EXT_PORT_COUNT(temp);
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xhci_dbg(xhci, "Ext Cap %p, port offset = %u, "
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"count = %u, revision = 0x%x\n",
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addr, port_offset, port_count, major_revision);
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/* Port count includes the current port offset */
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if (port_offset == 0 || (port_offset + port_count - 1) > num_ports)
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/* WTF? "Valid values are ‘1’ to MaxPorts" */
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return;
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port_offset--;
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for (i = port_offset; i < (port_offset + port_count); i++) {
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/* Duplicate entry. Ignore the port if the revisions differ. */
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if (xhci->port_array[i] != 0) {
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xhci_warn(xhci, "Duplicate port entry, Ext Cap %p,"
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" port %u\n", addr, i);
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xhci_warn(xhci, "Port was marked as USB %u, "
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"duplicated as USB %u\n",
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xhci->port_array[i], major_revision);
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/* Only adjust the roothub port counts if we haven't
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* found a similar duplicate.
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*/
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if (xhci->port_array[i] != major_revision &&
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xhci->port_array[i] != (u8) -1) {
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if (xhci->port_array[i] == 0x03)
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xhci->num_usb3_ports--;
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else
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xhci->num_usb2_ports--;
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xhci->port_array[i] = (u8) -1;
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}
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/* FIXME: Should we disable the port? */
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}
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xhci->port_array[i] = major_revision;
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if (major_revision == 0x03)
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xhci->num_usb3_ports++;
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else
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xhci->num_usb2_ports++;
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}
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/* FIXME: Should we disable ports not in the Extended Capabilities? */
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}
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/*
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* Scan the Extended Capabilities for the "Supported Protocol Capabilities" that
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* specify what speeds each port is supposed to be. We can't count on the port
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* speed bits in the PORTSC register being correct until a device is connected,
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* but we need to set up the two fake roothubs with the correct number of USB
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* 3.0 and USB 2.0 ports at host controller initialization time.
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*/
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static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
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{
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u32 __iomem *addr;
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u32 offset;
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unsigned int num_ports;
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int i, port_index;
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addr = &xhci->cap_regs->hcc_params;
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offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr));
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if (offset == 0) {
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xhci_err(xhci, "No Extended Capability registers, "
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"unable to set up roothub.\n");
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return -ENODEV;
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}
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num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
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xhci->port_array = kzalloc(sizeof(*xhci->port_array)*num_ports, flags);
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if (!xhci->port_array)
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return -ENOMEM;
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/*
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* For whatever reason, the first capability offset is from the
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* capability register base, not from the HCCPARAMS register.
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* See section 5.3.6 for offset calculation.
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*/
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addr = &xhci->cap_regs->hc_capbase + offset;
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while (1) {
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u32 cap_id;
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cap_id = xhci_readl(xhci, addr);
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if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL)
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xhci_add_in_port(xhci, num_ports, addr,
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(u8) XHCI_EXT_PORT_MAJOR(cap_id));
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offset = XHCI_EXT_CAPS_NEXT(cap_id);
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if (!offset || (xhci->num_usb2_ports + xhci->num_usb3_ports)
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== num_ports)
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break;
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/*
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* Once you're into the Extended Capabilities, the offset is
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* always relative to the register holding the offset.
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*/
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addr += offset;
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}
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if (xhci->num_usb2_ports == 0 && xhci->num_usb3_ports == 0) {
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xhci_warn(xhci, "No ports on the roothubs?\n");
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return -ENODEV;
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}
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xhci_dbg(xhci, "Found %u USB 2.0 ports and %u USB 3.0 ports.\n",
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xhci->num_usb2_ports, xhci->num_usb3_ports);
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/*
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* Note we could have all USB 3.0 ports, or all USB 2.0 ports.
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* Not sure how the USB core will handle a hub with no ports...
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*/
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if (xhci->num_usb2_ports) {
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xhci->usb2_ports = kmalloc(sizeof(*xhci->usb2_ports)*
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xhci->num_usb2_ports, flags);
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if (!xhci->usb2_ports)
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return -ENOMEM;
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port_index = 0;
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for (i = 0; i < num_ports; i++)
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if (xhci->port_array[i] != 0x03) {
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xhci->usb2_ports[port_index] =
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&xhci->op_regs->port_status_base +
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NUM_PORT_REGS*i;
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xhci_dbg(xhci, "USB 2.0 port at index %u, "
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"addr = %p\n", i,
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xhci->usb2_ports[port_index]);
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port_index++;
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}
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}
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if (xhci->num_usb3_ports) {
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xhci->usb3_ports = kmalloc(sizeof(*xhci->usb3_ports)*
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xhci->num_usb3_ports, flags);
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if (!xhci->usb3_ports)
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return -ENOMEM;
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port_index = 0;
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for (i = 0; i < num_ports; i++)
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if (xhci->port_array[i] == 0x03) {
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xhci->usb3_ports[port_index] =
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&xhci->op_regs->port_status_base +
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NUM_PORT_REGS*i;
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xhci_dbg(xhci, "USB 3.0 port at index %u, "
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"addr = %p\n", i,
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xhci->usb3_ports[port_index]);
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port_index++;
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}
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}
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return 0;
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}
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int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
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{
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@ -1809,6 +1971,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
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if (scratchpad_alloc(xhci, flags))
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goto fail;
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if (xhci_setup_port_arrays(xhci, flags))
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goto fail;
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return 0;
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@ -1549,6 +1549,15 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
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cmd_completion = command->completion;
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cmd_status = &command->status;
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command->command_trb = xhci->cmd_ring->enqueue;
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/* Enqueue pointer can be left pointing to the link TRB,
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* we must handle that
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*/
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if ((command->command_trb->link.control & TRB_TYPE_BITMASK)
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== TRB_TYPE(TRB_LINK))
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command->command_trb =
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xhci->cmd_ring->enq_seg->next->trbs;
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list_add_tail(&command->cmd_list, &virt_dev->cmd_list);
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} else {
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in_ctx = virt_dev->in_ctx;
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@ -2272,6 +2281,15 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
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/* Attempt to submit the Reset Device command to the command ring */
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spin_lock_irqsave(&xhci->lock, flags);
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reset_device_cmd->command_trb = xhci->cmd_ring->enqueue;
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/* Enqueue pointer can be left pointing to the link TRB,
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* we must handle that
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*/
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if ((reset_device_cmd->command_trb->link.control & TRB_TYPE_BITMASK)
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== TRB_TYPE(TRB_LINK))
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reset_device_cmd->command_trb =
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xhci->cmd_ring->enq_seg->next->trbs;
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list_add_tail(&reset_device_cmd->cmd_list, &virt_dev->cmd_list);
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ret = xhci_queue_reset_device(xhci, slot_id);
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if (ret) {
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@ -453,6 +453,24 @@ struct xhci_doorbell_array {
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#define STREAM_ID_TO_DB(p) (((p) & 0xffff) << 16)
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/**
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* struct xhci_protocol_caps
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* @revision: major revision, minor revision, capability ID,
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* and next capability pointer.
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* @name_string: Four ASCII characters to say which spec this xHC
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* follows, typically "USB ".
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* @port_info: Port offset, count, and protocol-defined information.
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*/
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struct xhci_protocol_caps {
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u32 revision;
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u32 name_string;
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u32 port_info;
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};
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#define XHCI_EXT_PORT_MAJOR(x) (((x) >> 24) & 0xff)
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#define XHCI_EXT_PORT_OFF(x) ((x) & 0xff)
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#define XHCI_EXT_PORT_COUNT(x) (((x) >> 8) & 0xff)
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/**
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* struct xhci_container_ctx
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* @type: Type of context. Used to calculated offsets to contained contexts.
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@ -1240,6 +1258,14 @@ struct xhci_hcd {
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u32 suspended_ports[8]; /* which ports are
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suspended */
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unsigned long resume_done[MAX_HC_PORTS];
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/* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */
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u8 *port_array;
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/* Array of pointers to USB 3.0 PORTSC registers */
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u32 __iomem **usb3_ports;
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unsigned int num_usb3_ports;
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/* Array of pointers to USB 2.0 PORTSC registers */
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u32 __iomem **usb2_ports;
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unsigned int num_usb2_ports;
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};
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/* For testing purposes */
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