arch/x86/include/asm/pci.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * (C) Copyright 2002
   4  * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
   5  */
   6
   7 #ifndef _PCI_I386_H_
   8 #define _PCI_I386_H_
   9
  10 #include <pci.h>
  11
  12 /* bus mapping constants (used for PCI core initialization) */
  13 #define PCI_REG_ADDR    0xcf8
  14 #define PCI_REG_DATA    0xcfc
  15
  16 #define PCI_CFG_EN      0x80000000
  17
  18 #ifndef __ASSEMBLY__
  19
  20 int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset,
  21                         ulong *valuep, enum pci_size_t size);
  22
  23 int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset,
  24                          ulong value, enum pci_size_t size);
  25
  26 /**
  27  * Assign IRQ number to a PCI device
  28  *
  29  * This function assigns IRQ for a PCI device. If the device does not exist
  30  * or does not require interrupts then this function has no effect.
  31  *
  32  * @bus:        PCI bus number
  33  * @device:     PCI device number
  34  * @irq:        An array of IRQ numbers that are assigned to INTA through
  35  *              INTD of this PCI device.
  36  */
  37 void pci_assign_irqs(int bus, int device, u8 irq[4]);
  38
  39 #endif /* __ASSEMBLY__ */
  40
  41 #endif /* _PCI_I386_H_ */