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>
Reviewed-by: Bin Meng <bmeng...@gmail.com>
---
Changes in v2: None
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)
+{
+}
--
2.2.0.rc0.207.ga3a616c
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