On Tue, Jan 27, 2015 at 9:23 AM, Simon Glass <s...@chromium.org> wrote: > Add a driver which locates the available XHCI controllers on the PCI bus > and makes them available. > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > drivers/usb/host/Makefile | 1 + > drivers/usb/host/xhci-pci.c | 60 > +++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 61 insertions(+) > create mode 100644 drivers/usb/host/xhci-pci.c > > diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile > index c11b551..66d6e9a 100644 > --- a/drivers/usb/host/Makefile > +++ b/drivers/usb/host/Makefile > @@ -47,6 +47,7 @@ obj-$(CONFIG_USB_XHCI) += xhci.o xhci-mem.o xhci-ring.o > obj-$(CONFIG_USB_XHCI_KEYSTONE) += xhci-keystone.o > obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o > obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o > +obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o > > # designware > obj-$(CONFIG_USB_DWC2) += dwc2.o > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c > new file mode 100644 > index 0000000..361fcce > --- /dev/null > +++ b/drivers/usb/host/xhci-pci.c > @@ -0,0 +1,60 @@ > +/* > + * Copyright (c) 2015, Google, Inc > + * Written by Simon Glass <s...@chromium.org> > + * All rights reserved. > + * > + * SPDX-License-Identifier: GPL-2.0 > + */ > + > +#include <common.h> > +#include <errno.h> > +#include <pci.h> > +#include <usb.h> > + > +#include "xhci.h" > + > +/* > + * Create the appropriate control structures to manage a new XHCI host > + * controller. > + */ > +int xhci_hcd_init(int index, struct xhci_hccr **ret_hccr, > + struct xhci_hcor **ret_hcor) > +{ > + struct xhci_hccr *hccr; > + struct xhci_hcor *hcor; > + pci_dev_t pdev; > + uint32_t cmd; > + int len; > + > + pdev = pci_find_class(PCI_CLASS_SERIAL_USB_XHCI, index); > + if (pdev < 0) { > + printf("XHCI host controller not found\n"); > + return -1; > + } > + > + hccr = (struct xhci_hccr *)pci_map_bar(pdev, > + PCI_BASE_ADDRESS_0, PCI_REGION_MEM); > + len = HC_LENGTH(xhci_readl(&hccr->cr_capbase)); > + hcor = (struct xhci_hcor *)((uint32_t)hccr + len); > + > + debug("XHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n", > + (uint32_t)hccr, (uint32_t)hcor, len); > + > + *ret_hccr = hccr; > + *ret_hcor = hcor; > + > + /* enable busmaster */ > + pci_read_config_dword(pdev, PCI_COMMAND, &cmd); > + cmd |= PCI_COMMAND_MASTER; > + pci_write_config_dword(pdev, PCI_COMMAND, cmd); > + > + return 0; > +} > + > +/* > + * Destroy the appropriate control structures corresponding * to the XHCI > host > + * controller > + */ > +void xhci_hcd_stop(int index) > +{ > +} > --
Reviewed-by: Bin Meng <bmeng...@gmail.com> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot