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Linux/arch/powerpc/include/asm/pci.h

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  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 PCI code what kind of PCI resource mappings we support */
 80 #define HAVE_PCI_MMAP                   1
 81 #define ARCH_GENERIC_PCI_MMAP_RESOURCE  1
 82 #define arch_can_pci_mmap_io()          1
 83 #define arch_can_pci_mmap_wc()          1
 84 
 85 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
 86                            size_t count);
 87 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
 88                            size_t count);
 89 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
 90                                       struct vm_area_struct *vma,
 91                                       enum pci_mmap_state mmap_state);
 92 
 93 #define HAVE_PCI_LEGACY 1
 94 
 95 extern void pcibios_claim_one_bus(struct pci_bus *b);
 96 
 97 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 98 
 99 extern void pcibios_resource_survey(void);
100 
101 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
102 extern int remove_phb_dynamic(struct pci_controller *phb);
103 
104 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
105                                         struct pci_bus *bus, int devfn);
106 
107 extern unsigned int pci_parse_of_flags(u32 addr0, int bridge);
108 
109 extern void of_scan_pci_bridge(struct pci_dev *dev);
110 
111 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
112 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
113 
114 struct file;
115 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
116                                          unsigned long pfn,
117                                          unsigned long size,
118                                          pgprot_t prot);
119 
120 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
121 
122 extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose);
123 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
124 extern void pcibios_setup_bus_self(struct pci_bus *bus);
125 extern void pcibios_setup_phb_io_space(struct pci_controller *hose);
126 extern void pcibios_scan_phb(struct pci_controller *hose);
127 
128 #endif  /* __KERNEL__ */
129 
130 extern struct pci_dev *pnv_pci_get_gpu_dev(struct pci_dev *npdev);
131 extern struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index);
132 
133 #endif /* __ASM_POWERPC_PCI_H */
134 

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