doc: replace @return by Return:

[platform/kernel/u-boot.git] / arch / x86 / include / asm / pci.h

diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 6b16188..1c30b32 100644 (file)
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -1,16 +1,78 @@
-
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2002
  * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef _PCI_I386_H_
 #define _PCI_I386_H_
 
-#define DEFINE_PCI_DEVICE_TABLE(_table) \
-       const struct pci_device_id _table[]
+#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__ */
 
-void pci_setup_type1(struct pci_controller *hose);
-#endif
+#endif /* _PCI_I386_H_ */