1 #ifndef _ASM_IA64_PCI_H
2 #define _ASM_IA64_PCI_H
5 #include <linux/slab.h>
6 #include <linux/spinlock.h>
7 #include <linux/string.h>
8 #include <linux/types.h>
11 #include <asm/scatterlist.h>
14 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
15 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
18 #define pcibios_assign_all_busses() 0
19 #define pcibios_scan_all_fns(a, b) 0
21 #define PCIBIOS_MIN_IO 0x1000
22 #define PCIBIOS_MIN_MEM 0x10000000
24 void pcibios_config_init(void);
29 * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct correspondence
30 * between device bus addresses and CPU physical addresses. Platforms with a hardware I/O
31 * MMU _must_ turn this off to suppress the bounce buffer handling code in the block and
32 * network device layers. Platforms with separate bus address spaces _must_ turn this off
33 * and provide a device DMA mapping implementation that takes care of the necessary
34 * address translation.
36 * For now, the ia64 platforms which may have separate/multiple bus address spaces all
37 * have I/O MMUs which support the merging of physically discontiguous buffers, so we can
38 * use that as the sole factor to determine the setting of PCI_DMA_BUS_IS_PHYS.
40 extern unsigned long ia64_max_iommu_merge_mask;
41 #define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
44 pcibios_set_master (struct pci_dev *dev)
46 /* No special bus mastering setup handling */
50 pcibios_penalize_isa_irq (int irq)
52 /* We don't do dynamic PCI IRQ allocation */
55 #define HAVE_ARCH_PCI_MWI 1
56 extern int pcibios_prep_mwi (struct pci_dev *);
58 #include <asm-generic/pci-dma-compat.h>
60 /* pci_unmap_{single,page} is not a nop, thus... */
61 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
63 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
65 #define pci_unmap_addr(PTR, ADDR_NAME) \
67 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
68 (((PTR)->ADDR_NAME) = (VAL))
69 #define pci_unmap_len(PTR, LEN_NAME) \
71 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
72 (((PTR)->LEN_NAME) = (VAL))
74 /* The ia64 platform always supports 64-bit addressing. */
75 #define pci_dac_dma_supported(pci_dev, mask) (1)
76 #define pci_dac_page_to_dma(dev,pg,off,dir) ((dma_addr_t) page_to_bus(pg) + (off))
77 #define pci_dac_dma_to_page(dev,dma_addr) (virt_to_page(bus_to_virt(dma_addr)))
78 #define pci_dac_dma_to_offset(dev,dma_addr) offset_in_page(dma_addr)
79 #define pci_dac_dma_sync_single_for_cpu(dev,dma_addr,len,dir) do { } while (0)
80 #define pci_dac_dma_sync_single_for_device(dev,dma_addr,len,dir) do { mb(); } while (0)
82 #define sg_dma_len(sg) ((sg)->dma_length)
83 #define sg_dma_address(sg) ((sg)->dma_address)
86 extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
87 enum pci_mmap_state mmap_state, int write_combine);
90 struct resource resource;
94 struct pci_controller {
100 struct pci_window *window;
105 #define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
106 #define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
108 static inline int pci_name_bus(char *name, struct pci_bus *bus)
110 if (pci_domain_nr(bus) == 0) {
111 sprintf(name, "%02x", bus->number);
113 sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
118 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
122 /* generic pci stuff */
123 #include <asm-generic/pci.h>
125 #endif /* _ASM_IA64_PCI_H */