arch/xtensa/include/asm/pci.h

   1 /*
   2  * linux/include/asm-xtensa/pci.h
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 2001 - 2005 Tensilica Inc.
   9  */
  10
  11 #ifndef _XTENSA_PCI_H
  12 #define _XTENSA_PCI_H
  13
  14 #ifdef __KERNEL__
  15
  16 /* Can be used to override the logic in pci_scan_bus for skipping
  17  * already-configured bus numbers - to be used for buggy BIOSes
  18  * or architectures with incomplete PCI setup by the loader
  19  */
  20
  21 #define pcibios_assign_all_busses()     0
  22
  23 extern struct pci_controller* pcibios_alloc_controller(void);
  24
  25 static inline void pcibios_penalize_isa_irq(int irq)
  26 {
  27         /* We don't do dynamic PCI IRQ allocation */
  28 }
  29
  30 /* Assume some values. (We should revise them, if necessary) */
  31
  32 #define PCIBIOS_MIN_IO          0x2000
  33 #define PCIBIOS_MIN_MEM         0x10000000
  34
  35 /* Dynamic DMA mapping stuff.
  36  * Xtensa has everything mapped statically like x86.
  37  */
  38
  39 #include <linux/types.h>
  40 #include <linux/slab.h>
  41 #include <asm/scatterlist.h>
  42 #include <linux/string.h>
  43 #include <asm/io.h>
  44
  45 struct pci_dev;
  46
  47 /* The PCI address space does equal the physical memory address space.
  48  * The networking and block device layers use this boolean for bounce buffer
  49  * decisions.
  50  */
  51
  52 #define PCI_DMA_BUS_IS_PHYS     (1)
  53
  54 /* Map a range of PCI memory or I/O space for a device into user space */
  55 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  56                         enum pci_mmap_state mmap_state, int write_combine);
  57
  58 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  59 #define HAVE_PCI_MMAP   1
  60
  61 #endif /* __KERNEL__ */
  62
  63 /* Implement the pci_ DMA API in terms of the generic device dma_ one */
  64 #include <asm-generic/pci-dma-compat.h>
  65
  66 /* Generic PCI */
  67 #include <asm-generic/pci.h>
  68
  69 #endif  /* _XTENSA_PCI_H */