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USB: xhci: BIOS handoff and HW initialization.

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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: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sarah Sharp
2009-04-27 19:52:28 -07:00
committed by Greg Kroah-Hartman
parent 74c6874199
commit 66d4eadd8d
7 changed files with 788 additions and 2 deletions
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1
drivers/usb/core/hcd.h
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@@ -173,6 +173,7 @@ struct hc_driver {
#define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */
#define HCD_USB11 0x0010 /* USB 1.1 */
#define HCD_USB2 0x0020 /* USB 2.0 */
#define HCD_USB3 0x0040 /* USB 3.0 */
/* called to init HCD and root hub */
int (*reset) (struct usb_hcd *hcd);