diff options
| author | Simon Glass <sjg@chromium.org> | 2015-01-27 22:13:31 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-02-05 22:16:42 -0700 |
| commit | 316328f59d5bb64ed8ab70b68edb434cae70ee58 (patch) | |
| tree | 6683d5d1adeaba7b4da9b852a84c6c0ec26e2edc /drivers | |
| parent | 4fd46727e4e5d5cf58bceac0be5a33fa4196435e (diff) | |
| download | u-boot-imx-316328f59d5bb64ed8ab70b68edb434cae70ee58.zip u-boot-imx-316328f59d5bb64ed8ab70b68edb434cae70ee58.tar.gz u-boot-imx-316328f59d5bb64ed8ab70b68edb434cae70ee58.tar.bz2 | |
usb: pci: Add XHCI driver for PCI
Add a driver which locates the available XHCI controllers on the PCI bus
and makes them available.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 60 |
2 files changed, 61 insertions, 0 deletions
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 <sjg@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) +{ +} |