1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
new file mode 100644
index 00000000000..f6972af7963
--- /dev/null
+++ b/drivers/usb/host/xhci-pci.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2015, Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ * All rights reserved.
+ */
+
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <init.h>
+#include <log.h>
+#include <pci.h>
+#include <reset.h>
+#include <usb.h>
+#include <usb/xhci.h>
+
+struct xhci_pci_plat {
+	struct reset_ctl reset;
+};
+
+static int xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
+			 struct xhci_hcor **ret_hcor)
+{
+	struct xhci_hccr *hccr;
+	struct xhci_hcor *hcor;
+	u32 cmd;
+
+	hccr = (struct xhci_hccr *)dm_pci_map_bar(dev,
+			PCI_BASE_ADDRESS_0, 0, 0, PCI_REGION_TYPE,
+			PCI_REGION_MEM);
+	if (!hccr) {
+		printf("xhci-pci init cannot map PCI mem bar\n");
+		return -EIO;
+	}
+
+	hcor = (struct xhci_hcor *)((uintptr_t) hccr +
+			HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
+
+	debug("XHCI-PCI init hccr %p and hcor %p hc_length %d\n",
+	      hccr, hcor, (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
+
+	*ret_hccr = hccr;
+	*ret_hcor = hcor;
+
+	/* enable busmaster */
+	dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
+	cmd |= PCI_COMMAND_MASTER;
+	dm_pci_write_config32(dev, PCI_COMMAND, cmd);
+	return 0;
+}
+
+static int xhci_pci_probe(struct udevice *dev)
+{
+	struct xhci_pci_plat *plat = dev_get_plat(dev);
+	struct xhci_hccr *hccr;
+	struct xhci_hcor *hcor;
+	int ret;
+
+	ret = reset_get_by_index(dev, 0, &plat->reset);
+	if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
+		dev_err(dev, "failed to get reset\n");
+		return ret;
+	}
+
+	if (reset_valid(&plat->reset)) {
+		ret = reset_assert(&plat->reset);
+		if (ret)
+			goto err_reset;
+
+		ret = reset_deassert(&plat->reset);
+		if (ret)
+			goto err_reset;
+	}
+
+	ret = xhci_pci_init(dev, &hccr, &hcor);
+	if (ret)
+		goto err_reset;
+
+	ret = xhci_register(dev, hccr, hcor);
+	if (ret)
+		goto err_reset;
+
+	return 0;
+
+err_reset:
+	if (reset_valid(&plat->reset))
+		reset_free(&plat->reset);
+
+	return ret;
+}
+
+static int xhci_pci_remove(struct udevice *dev)
+{
+	struct xhci_pci_plat *plat = dev_get_plat(dev);
+
+	xhci_deregister(dev);
+	if (reset_valid(&plat->reset))
+		reset_free(&plat->reset);
+
+	return 0;
+}
+
+static const struct udevice_id xhci_pci_ids[] = {
+	{ .compatible = "xhci-pci" },
+	{ }
+};
+
+U_BOOT_DRIVER(xhci_pci) = {
+	.name	= "xhci_pci",
+	.id	= UCLASS_USB,
+	.probe = xhci_pci_probe,
+	.remove	= xhci_pci_remove,
+	.of_match = xhci_pci_ids,
+	.ops	= &xhci_usb_ops,
+	.plat_auto	= sizeof(struct xhci_pci_plat),
+	.priv_auto	= sizeof(struct xhci_ctrl),
+	.flags	= DM_FLAG_OS_PREPARE | DM_FLAG_ALLOC_PRIV_DMA,
+};
+
+static struct pci_device_id xhci_pci_supported[] = {
+	{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
+	{},
+};
+
+U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);