1 files changed, 78 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
new file mode 100644
index 0000000..2a72073
--- /dev/null
+++ b/arch/x86/include/asm/pci.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
+ */
+
+#ifndef _PCI_I386_H_
+#define _PCI_I386_H_
+
+#include <pci.h>
+
+/* bus mapping constants (used for PCI core initialization) */
+#define PCI_REG_ADDR	0xcf8
+#define PCI_REG_DATA	0xcfc
+
+#define PCI_CFG_EN	0x80000000
+
+#ifndef __ASSEMBLY__
+
+/**
+ * pci_x86_read_config() - Read a configuration value from a device
+ *
+ * This function can be called before PCI is set up in driver model.
+ *
+ * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
+ * @offset:	Register offset to read
+ * @valuep:	Place to put the returned value
+ * @size:	Access size
+ * @return 0 if OK, -ve on error
+ */
+int pci_x86_read_config(pci_dev_t bdf, uint offset, ulong *valuep,
+			enum pci_size_t size);
+
+/**
+ * pci_bus_write_config() - Write a configuration value to a device
+ *
+ * This function can be called before PCI is set up in driver model.
+ *
+ * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
+ * @offset:	Register offset to write
+ * @value:	Value to write
+ * @size:	Access size
+ * @return 0 if OK, -ve on error
+ */
+int pci_x86_write_config(pci_dev_t bdf, uint offset, ulong value,
+			 enum pci_size_t size);
+
+/**
+ * pci_bus_clrset_config32() - Update a configuration value for a device
+ *
+ * The register at @offset is updated to (oldvalue & ~clr) | set. This function
+ * can be called before PCI is set up in driver model.
+ *
+ * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
+ * @offset:	Register offset to update
+ * @clr:	Bits to clear
+ * @set:	Bits to set
+ * @return 0 if OK, -ve on error
+ */
+int pci_x86_clrset_config(pci_dev_t bdf, uint offset, ulong clr, ulong set,
+			  enum pci_size_t size);
+
+/**
+ * Assign IRQ number to a PCI device
+ *
+ * This function assigns IRQ for a PCI device. If the device does not exist
+ * or does not require interrupts then this function has no effect.
+ *
+ * @bus:	PCI bus number
+ * @device:	PCI device number
+ * @irq:	An array of IRQ numbers that are assigned to INTA through
+ *		INTD of this PCI device.
+ */
+void pci_assign_irqs(int bus, int device, u8 irq[4]);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _PCI_I386_H_ */