|
@@ -0,0 +1,43 @@
|
|
|
+/* SPDX-License-Identifier: GPL-2.0+ */
|
|
|
+/*
|
|
|
+ * Copyright (c) 2019 Google, Inc
|
|
|
+ */
|
|
|
+
|
|
|
+#ifndef __DM_PCI_H
|
|
|
+#define __DM_PCI_H
|
|
|
+
|
|
|
+struct udevice;
|
|
|
+
|
|
|
+/**
|
|
|
+ * pci_get_devfn() - Extract the devfn from fdt_pci_addr of the device
|
|
|
+ *
|
|
|
+ * Get devfn from fdt_pci_addr of the specified device
|
|
|
+ *
|
|
|
+ * This returns an int to avoid a dependency on pci.h
|
|
|
+ *
|
|
|
+ * @dev: PCI device
|
|
|
+ * @return devfn in bits 15...8 if found (pci_dev_t format), or -ENODEV if not
|
|
|
+ * found
|
|
|
+ */
|
|
|
+int pci_get_devfn(struct udevice *dev);
|
|
|
+
|
|
|
+/**
|
|
|
+ * pci_ofplat_get_devfn() - Get the PCI dev/fn from of-platdata
|
|
|
+ *
|
|
|
+ * This function is used to obtain a PCI device/function from of-platdata
|
|
|
+ * register data. In this case the first cell of the 'reg' property contains
|
|
|
+ * the required information.
|
|
|
+ *
|
|
|
+ * This returns an int to avoid a dependency on pci.h
|
|
|
+ *
|
|
|
+ * @reg: reg value from dt-platdata.c array (first member). This is not a
|
|
|
+ * pointer type, since the caller may use fdt32_t or fdt64_t depending on
|
|
|
+ * the address sizes.
|
|
|
+ * @return device/function for that device (pci_dev_t format)
|
|
|
+ */
|
|
|
+static inline int pci_ofplat_get_devfn(u32 reg)
|
|
|
+{
|
|
|
+ return reg & 0xff00;
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|