- 16 6月, 2009 4 次提交
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由 Sarah Sharp 提交于
xHCI needs to get a "Slot ID" from the host controller and allocate other data structures for every USB device. Make usb_alloc_dev() and usb_release_dev() allocate and free these device structures. After setting up the xHC device structures, usb_alloc_dev() must wait for the hardware to respond to an Enable Slot command. usb_alloc_dev() fires off a Disable Slot command and does not wait for it to complete. When the USB core wants to choose an address for the device, the xHCI driver must issue a Set Address command and wait for an event for that command. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sarah Sharp 提交于
Add functionality for getting port status and hub descriptor for xHCI root hubs. This is WIP because the USB 3.0 hub descriptor is different from the USB 2.0 hub descriptor. For now, we lie about the root hub descriptor because the changes won't effect how the core talks to the root hub. Later we will need to add the USB 3.0 hub descriptor for real hubs, and this code might change. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sarah Sharp 提交于
xHCI host controllers can optionally implement a no-op test. This simple test ensures the OS has correctly setup all basic data structures and can correctly respond to interrupts from the host controller hardware. There are two rings exercised by the no-op test: the command ring, and the event ring. The host controller driver writes a no-op command TRB to the command ring, and rings the doorbell for the command ring (the first entry in the doorbell array). The hardware receives this event, places a command completion event on the event ring, and fires an interrupt. The host controller driver sees the interrupt, and checks the event ring for TRBs it can process, and sees the command completion event. (See the rules in xhci-ring.c for who "owns" a TRB. This is a simplified set of rules, and may not contain all the details that are in the xHCI 0.95 spec.) A timer fires every 60 seconds to debug the state of the hardware and command and event rings. This timer only runs if CONFIG_USB_XHCI_HCD_DEBUGGING is 'y'. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sarah Sharp 提交于
Add PCI initialization code to take control of the xHCI host controller away from the BIOS, halt, and reset the host controller. The xHCI spec says that BIOSes must give up the host controller within 5 seconds. Add some host controller glue functions to handle hardware initialization and memory allocation for the host controller. The current xHCI prototypes use PCI interrupts, but the xHCI spec requires MSI-X interrupts. Add code to support MSI-X interrupts, but use the PCI interrupts for now. Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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