GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2015, Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ * All rights reserved.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <pci.h>
+#include <usb.h>
+#include <usb/xhci.h>
+
+static void 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, PCI_REGION_MEM);
+	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);
+}
+
+static int xhci_pci_probe(struct udevice *dev)
+{
+	struct xhci_hccr *hccr;
+	struct xhci_hcor *hcor;
+
+	xhci_pci_init(dev, &hccr, &hcor);
+
+	return xhci_register(dev, hccr, hcor);
+}
+
+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_deregister,
+	.of_match = xhci_pci_ids,
+	.ops	= &xhci_usb_ops,
+	.platdata_auto_alloc_size = sizeof(struct usb_platdata),
+	.priv_auto_alloc_size = sizeof(struct xhci_ctrl),
+	.flags	= 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);