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ae63674714
kernel-ark/drivers/usb/host
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Sarah Sharp ae63674714 USB: xhci: URB cancellation support. 
Add URB cancellation support to the xHCI host controller driver.  This
currently supports cancellation for endpoints that do not have streams
enabled.

An URB is represented by a number of Transaction Request Buffers (TRBs),
that are chained together to make one (or more) Transaction Descriptors
(TDs) on an endpoint ring.  The ring is comprised of contiguous segments,
linked together with Link TRBs (which may or may not be chained into a TD).

To cancel an URB, we must stop the endpoint ring, make the hardware skip
over the TDs in the URB (either by turning them into No-op TDs, or by
moving the hardware's ring dequeue pointer past the last TRB in the last
TD), and then restart the ring.

There are times when we must drop the xHCI lock during this process, like
when we need to complete cancelled URBs.  We must ensure that additional
URBs can be marked as cancelled, and that new URBs can be enqueued (since
the URB completion handlers can do either).  The new endpoint ring
variables cancels_pending and state (which can only be modified while
holding the xHCI lock) ensure that future cancellation and enqueueing do
not interrupt any pending cancellation code.

To facilitate cancellation, we must keep track of the starting ring
segment, first TRB, and last TRB for each URB.  We also need to keep track
of the list of TDs that have been marked as cancelled, separate from the
list of TDs that are queued for this endpoint.  The new variables and
cancellation list are stored in the xhci_td structure.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15 21:44:49 -07:00
..
whci USB: whci-hcd: check return value of usb_hcd_link_urb_to_ep() 2009-04-17 10:50:27 -07:00
ehci-au1xxx.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-dbg.c USB: clean up redundant tests on unsigned 2009-01-07 09:59:49 -08:00
ehci-fsl.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-fsl.h
ehci-hcd.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-hub.c USB: EHCI: create sysfs companion files directly in the controller device 2009-06-15 21:44:43 -07:00
ehci-ixp4xx.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-mem.c USB: EHCI: slow down ITD reuse 2009-02-27 14:40:50 -08:00
ehci-orion.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-pci.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-ppc-of.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-ps3.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-q.c USB: EHCI: update toggle state for linked QHs 2009-06-15 21:44:46 -07:00
ehci-sched.c USB: EHCI: stagger frames for interrupt transfers 2009-06-15 21:44:46 -07:00
ehci.h USB: EHCI: stagger frames for interrupt transfers 2009-06-15 21:44:46 -07:00
fhci-dbg.c USB: FHCI: use the new usb debugfs directory 2009-06-15 21:44:43 -07:00
fhci-hcd.c USB: FHCI: use dev_name() in place of bus_id. 2009-03-24 16:38:23 -07:00
fhci-hub.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-mem.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-q.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-sched.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-tds.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci.h USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
hwa-hc.c wusb: hwa-hc: Drop unused pci_suspend/resume hooks. 2009-06-15 21:44:44 -07:00
isp116x-hcd.c USB: make transfer_buffer_lengths in struct urb field u32 2009-03-24 16:20:36 -07:00
isp116x.h USB: add missing KERN_* constants to printks 2009-03-24 16:20:30 -07:00
isp1760-hcd.c USB: isp1760: urb_dequeue doesn't always find the urbs 2009-05-28 13:54:43 -07:00
isp1760-hcd.h USB: Make the isp1760_register function prototype more generic 2009-03-24 16:20:31 -07:00
isp1760-if.c USB: Add platform device support for the ISP1760 USB chip 2009-03-24 16:20:31 -07:00
Kconfig USB: Add platform device support for the ISP1760 USB chip 2009-03-24 16:20:31 -07:00
Makefile USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
ohci-at91.c [ARM] 5446/1: ohci-at91: Limit vbus_pin assignment to the size of the array 2009-04-08 20:36:18 +01:00
ohci-au1xxx.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-dbg.c USB: OHCI: use the ohci structure directly in debugfs files. 2009-06-15 21:44:43 -07:00
ohci-ep93xx.c [ARM] 5526/1: ep93xx: usb driver cleanup 2009-05-29 20:16:29 +01:00
ohci-hcd.c USB: OHCI: use the new usb debugfs directory 2009-06-15 21:44:43 -07:00
ohci-hub.c USB: OHCI: fix endless polling behavior 2008-10-17 14:41:04 -07:00
ohci-lh7a404.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-mem.c
ohci-omap.c [ARM] omap: ensure OMAP drivers pass a struct device to clk_get() 2009-01-24 11:41:16 +00:00
ohci-pci.c USB: new flag for resume-from-hibernation 2009-06-15 21:44:44 -07:00
ohci-pnx4008.c USB: Convert ohci-pnx4008 to a new-style i2c driver 2009-01-07 09:59:53 -08:00
ohci-pnx8550.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-ppc-of.c USB: powerpc: Workaround for the PPC440EPX USBH_23 errata [take 3] 2009-01-07 09:59:52 -08:00
ohci-ppc-soc.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-ps3.c dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
ohci-pxa27x.c [ARM] pxa: don't pass a consumer clock name for devices with unique clocks 2008-11-27 12:38:23 +00:00
ohci-q.c USB: quirk PLL power down mode 2008-08-13 17:32:58 -07:00
ohci-s3c2410.c USB: S3C: Move usb-control.h to platform include 2009-03-24 16:20:45 -07:00
ohci-sa1111.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-sh.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-sm501.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-ssb.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
ohci-tmio.c usb: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-07 09:59:52 -08:00
ohci.h usb: remove code associated with !CONFIG_PPC_MERGE 2008-10-17 14:40:57 -07:00
oxu210hp-hcd.c USB: host: fix sparse warning: Using plain integer as NULL pointer 2009-03-24 16:20:44 -07:00
oxu210hp.h USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
pci-quirks.c USB: xhci: BIOS handoff and HW initialization. 2009-06-15 21:44:48 -07:00
pci-quirks.h
r8a66597-hcd.c USB: r8a66597-hcd: use platform_data instead of module_param 2009-06-15 21:44:46 -07:00
r8a66597.h USB: r8a66597-hcd: use platform_data instead of module_param 2009-06-15 21:44:46 -07:00
sl811_cs.c pcmcia: encapsulate ioaddr_t 2008-08-29 09:43:14 +02:00
sl811-hcd.c USB: make transfer_buffer_lengths in struct urb field u32 2009-03-24 16:20:36 -07:00
sl811.h Rename WARN() to WARNING() to clear the namespace 2008-07-25 10:53:29 -07:00
u132-hcd.c USB: automatically enable RHSC interrupts 2008-08-21 10:26:38 -07:00
uhci-debug.c USB: uhci: don't use pseudo negative values 2009-03-24 16:20:36 -07:00
uhci-hcd.c USB: new flag for resume-from-hibernation 2009-06-15 21:44:44 -07:00
uhci-hcd.h USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
uhci-hub.c USB: uhci: mark root_hub_hub_des[] as const 2008-07-21 15:16:30 -07:00
uhci-q.c USB: UHCI queue: use usb_endpoint_type() 2009-06-15 21:44:42 -07:00
xhci-dbg.c USB: xhci: Allocate and address USB devices 2009-06-15 21:44:49 -07:00
xhci-ext-caps.h USB: xhci: Support xHCI host controllers and USB 3.0 devices. 2009-06-15 21:44:48 -07:00
xhci-hcd.c USB: xhci: URB cancellation support. 2009-06-15 21:44:49 -07:00
xhci-hub.c USB: xhci: Root hub support. 2009-06-15 21:44:48 -07:00
xhci-mem.c USB: xhci: URB cancellation support. 2009-06-15 21:44:49 -07:00
xhci-pci.c USB: xhci: Bandwidth allocation support 2009-06-15 21:44:49 -07:00
xhci-ring.c USB: xhci: URB cancellation support. 2009-06-15 21:44:49 -07:00
xhci.h USB: xhci: URB cancellation support. 2009-06-15 21:44:49 -07:00