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>
17 #include <asm/machdep.h>
18 #include <asm/scatterlist.h>
22 #include <asm-generic/pci-dma-compat.h>
24 #define PCIBIOS_MIN_IO 0x1000
25 #define PCIBIOS_MIN_MEM 0x10000000
29 #ifdef CONFIG_PPC_ISERIES
30 #define pcibios_scan_all_fns(a, b) 0
32 extern int pcibios_scan_all_fns(struct pci_bus
*bus
, int devfn
);
35 static inline void pcibios_set_master(struct pci_dev
*dev
)
37 /* No special bus mastering setup handling */
40 static inline void pcibios_penalize_isa_irq(int irq
, int active
)
42 /* We don't do dynamic PCI IRQ allocation */
45 #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
46 static inline int pci_get_legacy_ide_irq(struct pci_dev
*dev
, int channel
)
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;
53 #define HAVE_ARCH_PCI_MWI 1
54 static inline int pcibios_prep_mwi(struct pci_dev
*dev
)
57 * We would like to avoid touching the cacheline size or MWI bit
58 * but we cant do that with the current pcibios_prep_mwi
59 * interface. pSeries firmware sets the cacheline size (which is not
60 * the cpu cacheline size in all cases) and hardware treats MWI
61 * the same as memory write. So we dont touch the cacheline size
62 * here and allow the generic code to set the MWI bit.
67 extern unsigned int pcibios_assign_all_busses(void);
69 extern struct dma_mapping_ops pci_dma_ops
;
71 /* For DAC DMA, we currently don't support it by default, but
72 * we let the platform override this
74 static inline int pci_dac_dma_supported(struct pci_dev
*hwdev
,u64 mask
)
76 if (pci_dma_ops
.dac_dma_supported
)
77 return pci_dma_ops
.dac_dma_supported(&hwdev
->dev
, mask
);
82 static inline void pci_dma_burst_advice(struct pci_dev
*pdev
,
83 enum pci_dma_burst_strategy
*strat
,
84 unsigned long *strategy_parameter
)
86 unsigned long cacheline_size
;
89 pci_read_config_byte(pdev
, PCI_CACHE_LINE_SIZE
, &byte
);
91 cacheline_size
= 1024;
93 cacheline_size
= (int) byte
* 4;
95 *strat
= PCI_DMA_BURST_MULTIPLE
;
96 *strategy_parameter
= cacheline_size
;
100 extern int pci_domain_nr(struct pci_bus
*bus
);
102 /* Decide whether to display the domain number in /proc */
103 extern int pci_proc_domain(struct pci_bus
*bus
);
105 struct vm_area_struct
;
106 /* Map a range of PCI memory or I/O space for a device into user space */
107 int pci_mmap_page_range(struct pci_dev
*pdev
, struct vm_area_struct
*vma
,
108 enum pci_mmap_state mmap_state
, int write_combine
);
110 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
111 #define HAVE_PCI_MMAP 1
113 /* pci_unmap_{single,page} is not a nop, thus... */
114 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
115 dma_addr_t ADDR_NAME;
116 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
118 #define pci_unmap_addr(PTR, ADDR_NAME) \
120 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
121 (((PTR)->ADDR_NAME) = (VAL))
122 #define pci_unmap_len(PTR, LEN_NAME) \
124 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
125 (((PTR)->LEN_NAME) = (VAL))
127 /* The PCI address space does equal the physical memory
128 * address space. The networking and block device layers use
129 * this boolean for bounce buffer decisions.
131 #define PCI_DMA_BUS_IS_PHYS (0)
134 pcibios_resource_to_bus(struct pci_dev
*dev
, struct pci_bus_region
*region
,
135 struct resource
*res
);
138 pcibios_bus_to_resource(struct pci_dev
*dev
, struct resource
*res
,
139 struct pci_bus_region
*region
);
141 static inline struct resource
*
142 pcibios_select_root(struct pci_dev
*pdev
, struct resource
*res
)
144 struct resource
*root
= NULL
;
146 if (res
->flags
& IORESOURCE_IO
)
147 root
= &ioport_resource
;
148 if (res
->flags
& IORESOURCE_MEM
)
149 root
= &iomem_resource
;
155 unmap_bus_range(struct pci_bus
*bus
);
158 remap_bus_range(struct pci_bus
*bus
);
161 pcibios_fixup_device_resources(struct pci_dev
*dev
, struct pci_bus
*bus
);
163 extern struct pci_controller
*init_phb_dynamic(struct device_node
*dn
);
165 extern int pci_read_irq_line(struct pci_dev
*dev
);
167 extern void pcibios_add_platform_entries(struct pci_dev
*dev
);
170 extern pgprot_t
pci_phys_mem_access_prot(struct file
*file
,
171 unsigned long offset
,
175 #ifdef CONFIG_PPC_MULTIPLATFORM
176 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
177 extern void pci_resource_to_user(const struct pci_dev
*dev
, int bar
,
178 const struct resource
*rsrc
,
179 u64
*start
, u64
*end
);
180 #endif /* CONFIG_PPC_MULTIPLATFORM */
183 #endif /* __KERNEL__ */
185 #endif /* __PPC64_PCI_H */