1 #ifndef __ASM_POWERPC_PCI_H
2 #define __ASM_POWERPC_PCI_H
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.
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>
18 #include <asm/machdep.h>
21 #include <asm/pci-bridge.h>
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 */
28 #define PCIBIOS_MIN_IO 0x1000
29 #define PCIBIOS_MIN_MEM 0x10000000
33 /* Values for the `which' argument to sys_pciconfig_iobase syscall. */
34 #define IOBASE_BRIDGE_NUMBER 0
35 #define IOBASE_MEMORY 1
37 #define IOBASE_ISA_IO 3
38 #define IOBASE_ISA_MEM 4
41 * Set this to 1 if you want the kernel to re-assign all PCI
42 * bus numbers (don't do that on ppc64 yet !)
44 #define pcibios_assign_all_busses() \
45 (pci_has_flag(PCI_REASSIGN_ALL_BUS))
47 #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
48 static inline int pci_get_legacy_ide_irq(struct pci_dev
*dev
, int channel
)
50 if (ppc_md
.pci_get_legacy_ide_irq
)
51 return ppc_md
.pci_get_legacy_ide_irq(dev
, channel
);
52 return channel
? 15 : 14;
56 extern void set_pci_dma_ops(const struct dma_map_ops
*dma_ops
);
57 extern const struct dma_map_ops
*get_pci_dma_ops(void);
58 #else /* CONFIG_PCI */
59 #define set_pci_dma_ops(d)
60 #define get_pci_dma_ops() NULL
66 * We want to avoid touching the cacheline size or MWI bit.
67 * pSeries firmware sets the cacheline size (which is not the cpu cacheline
68 * size in all cases) and hardware treats MWI the same as memory write.
70 #define PCI_DISABLE_MWI
72 #endif /* CONFIG_PPC64 */
74 extern int pci_domain_nr(struct pci_bus
*bus
);
76 /* Decide whether to display the domain number in /proc */
77 extern int pci_proc_domain(struct pci_bus
*bus
);
79 struct vm_area_struct
;
80 /* Map a range of PCI memory or I/O space for a device into user space */
81 int pci_mmap_page_range(struct pci_dev
*pdev
, struct vm_area_struct
*vma
,
82 enum pci_mmap_state mmap_state
, int write_combine
);
84 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
85 #define HAVE_PCI_MMAP 1
87 extern int pci_legacy_read(struct pci_bus
*bus
, loff_t port
, u32
*val
,
89 extern int pci_legacy_write(struct pci_bus
*bus
, loff_t port
, u32 val
,
91 extern int pci_mmap_legacy_page_range(struct pci_bus
*bus
,
92 struct vm_area_struct
*vma
,
93 enum pci_mmap_state mmap_state
);
95 #define HAVE_PCI_LEGACY 1
99 /* The PCI address space does not equal the physical memory address
100 * space (we have an IOMMU). The IDE and SCSI device layers use
101 * this boolean for bounce buffer decisions.
103 #define PCI_DMA_BUS_IS_PHYS (0)
107 /* The PCI address space does equal the physical memory
108 * address space (no IOMMU). The IDE and SCSI device layers use
109 * this boolean for bounce buffer decisions.
111 #define PCI_DMA_BUS_IS_PHYS (1)
113 #endif /* CONFIG_PPC64 */
115 extern void pcibios_claim_one_bus(struct pci_bus
*b
);
117 extern void pcibios_finish_adding_to_bus(struct pci_bus
*bus
);
119 extern void pcibios_resource_survey(void);
121 extern struct pci_controller
*init_phb_dynamic(struct device_node
*dn
);
122 extern int remove_phb_dynamic(struct pci_controller
*phb
);
124 extern struct pci_dev
*of_create_pci_dev(struct device_node
*node
,
125 struct pci_bus
*bus
, int devfn
);
127 extern void of_scan_pci_bridge(struct pci_dev
*dev
);
129 extern void of_scan_bus(struct device_node
*node
, struct pci_bus
*bus
);
130 extern void of_rescan_bus(struct device_node
*node
, struct pci_bus
*bus
);
133 extern pgprot_t
pci_phys_mem_access_prot(struct file
*file
,
138 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
140 extern resource_size_t
pcibios_io_space_offset(struct pci_controller
*hose
);
141 extern void pcibios_setup_bus_devices(struct pci_bus
*bus
);
142 extern void pcibios_setup_bus_self(struct pci_bus
*bus
);
143 extern void pcibios_setup_phb_io_space(struct pci_controller
*hose
);
144 extern void pcibios_scan_phb(struct pci_controller
*hose
);
146 #endif /* __KERNEL__ */
148 extern struct pci_dev
*pnv_pci_get_gpu_dev(struct pci_dev
*npdev
);
149 extern struct pci_dev
*pnv_pci_get_npu_dev(struct pci_dev
*gpdev
, int index
);
151 #endif /* __ASM_POWERPC_PCI_H */