LXR linux/arch/powerpc/include/asm/pci.h

   1#ifndef __ASM_POWERPC_PCI_H
   2#define __ASM_POWERPC_PCI_H
   3#ifdef __KERNEL__
   4
   5/*
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the License, or (at your option) any later version.
  10 */
  11
  12#include <linux/types.h>
  13#include <linux/slab.h>
  14#include <linux/string.h>
  15#include <linux/dma-map-ops.h>
  16#include <linux/scatterlist.h>
  17
  18#include <asm/machdep.h>
  19#include <asm/io.h>
  20#include <asm/prom.h>
  21#include <asm/pci-bridge.h>
  22
  23/* Return values for pci_controller_ops.probe_mode function */
  24#define PCI_PROBE_NONE          -1      /* Don't look at this bus at all */
  25#define PCI_PROBE_NORMAL        0       /* Do normal PCI probing */
  26#define PCI_PROBE_DEVTREE       1       /* Instantiate from device tree */
  27
  28#define PCIBIOS_MIN_IO          0x1000
  29#define PCIBIOS_MIN_MEM         0x10000000
  30
  31/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
  32#define IOBASE_BRIDGE_NUMBER    0
  33#define IOBASE_MEMORY           1
  34#define IOBASE_IO               2
  35#define IOBASE_ISA_IO           3
  36#define IOBASE_ISA_MEM          4
  37
  38/*
  39 * Set this to 1 if you want the kernel to re-assign all PCI
  40 * bus numbers (don't do that on ppc64 yet !)
  41 */
  42#define pcibios_assign_all_busses() \
  43        (pci_has_flag(PCI_REASSIGN_ALL_BUS))
  44
  45#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
  46static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
  47{
  48        if (ppc_md.pci_get_legacy_ide_irq)
  49                return ppc_md.pci_get_legacy_ide_irq(dev, channel);
  50        return channel ? 15 : 14;
  51}
  52
  53#ifdef CONFIG_PCI
  54extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops);
  55#else   /* CONFIG_PCI */
  56#define set_pci_dma_ops(d)
  57#endif
  58
  59#ifdef CONFIG_PPC64
  60
  61/*
  62 * We want to avoid touching the cacheline size or MWI bit.
  63 * pSeries firmware sets the cacheline size (which is not the cpu cacheline
  64 * size in all cases) and hardware treats MWI the same as memory write.
  65 */
  66#define PCI_DISABLE_MWI
  67
  68#endif /* CONFIG_PPC64 */
  69
  70extern int pci_domain_nr(struct pci_bus *bus);
  71
  72/* Decide whether to display the domain number in /proc */
  73extern int pci_proc_domain(struct pci_bus *bus);
  74
  75struct vm_area_struct;
  76
  77/* Tell PCI code what kind of PCI resource mappings we support */
  78#define HAVE_PCI_MMAP                   1
  79#define ARCH_GENERIC_PCI_MMAP_RESOURCE  1
  80#define arch_can_pci_mmap_io()          1
  81#define arch_can_pci_mmap_wc()          1
  82
  83extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  84                           size_t count);
  85extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  86                           size_t count);
  87extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  88                                      struct vm_area_struct *vma,
  89                                      enum pci_mmap_state mmap_state);
  90
  91#define HAVE_PCI_LEGACY 1
  92
  93extern void pcibios_claim_one_bus(struct pci_bus *b);
  94
  95extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
  96
  97extern void pcibios_resource_survey(void);
  98
  99extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 100extern int remove_phb_dynamic(struct pci_controller *phb);
 101
 102extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 103                                        struct pci_bus *bus, int devfn);
 104
 105extern unsigned int pci_parse_of_flags(u32 addr0, int bridge);
 106
 107extern void of_scan_pci_bridge(struct pci_dev *dev);
 108
 109extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 110extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 111
 112struct file;
 113extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 114                                         unsigned long pfn,
 115                                         unsigned long size,
 116                                         pgprot_t prot);
 117
 118extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose);
 119extern void pcibios_setup_bus_self(struct pci_bus *bus);
 120extern void pcibios_setup_phb_io_space(struct pci_controller *hose);
 121extern void pcibios_scan_phb(struct pci_controller *hose);
 122
 123#endif  /* __KERNEL__ */
 124
 125extern struct pci_dev *pnv_pci_get_gpu_dev(struct pci_dev *npdev);
 126extern struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index);
 127extern int pnv_npu2_init(struct pci_controller *hose);
 128extern int pnv_npu2_map_lpar_dev(struct pci_dev *gpdev, unsigned int lparid,
 129                unsigned long msr);
 130extern int pnv_npu2_unmap_lpar_dev(struct pci_dev *gpdev);
 131
 132#endif /* __ASM_POWERPC_PCI_H */
 133