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-mapping.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
  46 static 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
  54 extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops);
  55 extern const struct dma_map_ops *get_pci_dma_ops(void);
  56 #else   /* CONFIG_PCI */
  57 #define set_pci_dma_ops(d)
  58 #define get_pci_dma_ops()       NULL
  59 #endif
  60
  61 #ifdef CONFIG_PPC64
  62
  63 /*
  64  * We want to avoid touching the cacheline size or MWI bit.
  65  * pSeries firmware sets the cacheline size (which is not the cpu cacheline
  66  * size in all cases) and hardware treats MWI the same as memory write.
  67  */
  68 #define PCI_DISABLE_MWI
  69
  70 #endif /* CONFIG_PPC64 */
  71
  72 extern int pci_domain_nr(struct pci_bus *bus);
  73
  74 /* Decide whether to display the domain number in /proc */
  75 extern int pci_proc_domain(struct pci_bus *bus);
  76
  77 struct vm_area_struct;
  78
  79 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() and it does WC */
  80 #define HAVE_PCI_MMAP           1
  81 #define arch_can_pci_mmap_io()  1
  82 #define arch_can_pci_mmap_wc()  1
  83
  84 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  85                            size_t count);
  86 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  87                            size_t count);
  88 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  89                                       struct vm_area_struct *vma,
  90                                       enum pci_mmap_state mmap_state);
  91
  92 #define HAVE_PCI_LEGACY 1
  93
  94 #ifdef CONFIG_PPC64
  95
  96 /* The PCI address space does not equal the physical memory address
  97  * space (we have an IOMMU).  The IDE and SCSI device layers use
  98  * this boolean for bounce buffer decisions.
  99  */
 100 #define PCI_DMA_BUS_IS_PHYS     (0)
 101
 102 #else /* 32-bit */
 103
 104 /* The PCI address space does equal the physical memory
 105  * address space (no IOMMU).  The IDE and SCSI device layers use
 106  * this boolean for bounce buffer decisions.
 107  */
 108 #define PCI_DMA_BUS_IS_PHYS     (1)
 109
 110 #endif /* CONFIG_PPC64 */
 111
 112 extern void pcibios_claim_one_bus(struct pci_bus *b);
 113
 114 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 115
 116 extern void pcibios_resource_survey(void);
 117
 118 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 119 extern int remove_phb_dynamic(struct pci_controller *phb);
 120
 121 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 122                                         struct pci_bus *bus, int devfn);
 123
 124 extern unsigned int pci_parse_of_flags(u32 addr0, int bridge);
 125
 126 extern void of_scan_pci_bridge(struct pci_dev *dev);
 127
 128 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 129 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 130
 131 struct file;
 132 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 133                                          unsigned long pfn,
 134                                          unsigned long size,
 135                                          pgprot_t prot);
 136
 137 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 138
 139 extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose);
 140 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 141 extern void pcibios_setup_bus_self(struct pci_bus *bus);
 142 extern void pcibios_setup_phb_io_space(struct pci_controller *hose);
 143 extern void pcibios_scan_phb(struct pci_controller *hose);
 144
 145 #endif  /* __KERNEL__ */
 146
 147 extern struct pci_dev *pnv_pci_get_gpu_dev(struct pci_dev *npdev);
 148 extern struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index);
 149
 150 #endif /* __ASM_POWERPC_PCI_H */