tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef _ASM_IA64_PCI_H
2#define _ASM_IA64_PCI_H
3
4#include <linux/mm.h>
5#include <linux/slab.h>
6#include <linux/spinlock.h>
7#include <linux/string.h>
8#include <linux/types.h>
9#include <linux/scatterlist.h>
10
11#include <asm/io.h>
12#include <asm/hw_irq.h>
13
14struct pci_vector_struct {
15 __u16 segment; /* PCI Segment number */
16 __u16 bus; /* PCI Bus number */
17 __u32 pci_id; /* ACPI split 16 bits device, 16 bits function (see section 6.1.1) */
18 __u8 pin; /* PCI PIN (0 = A, 1 = B, 2 = C, 3 = D) */
19 __u32 irq; /* IRQ assigned */
20};
21
22/*
23 * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
24 * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
25 * loader.
26 */
27#define pcibios_assign_all_busses() 0
28
29#define PCIBIOS_MIN_IO 0x1000
30#define PCIBIOS_MIN_MEM 0x10000000
31
32void pcibios_config_init(void);
33
34struct pci_dev;
35
36/*
37 * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct
38 * correspondence between device bus addresses and CPU physical addresses.
39 * Platforms with a hardware I/O MMU _must_ turn this off to suppress the
40 * bounce buffer handling code in the block and network device layers.
41 * Platforms with separate bus address spaces _must_ turn this off and provide
42 * a device DMA mapping implementation that takes care of the necessary
43 * address translation.
44 *
45 * For now, the ia64 platforms which may have separate/multiple bus address
46 * spaces all have I/O MMUs which support the merging of physically
47 * discontiguous buffers, so we can use that as the sole factor to determine
48 * the setting of PCI_DMA_BUS_IS_PHYS.
49 */
50extern unsigned long ia64_max_iommu_merge_mask;
51#define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
52
53#include <asm-generic/pci-dma-compat.h>
54
55#define HAVE_PCI_MMAP
56extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
57 enum pci_mmap_state mmap_state, int write_combine);
58#define HAVE_PCI_LEGACY
59extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
60 struct vm_area_struct *vma,
61 enum pci_mmap_state mmap_state);
62
63#define pci_get_legacy_mem platform_pci_get_legacy_mem
64#define pci_legacy_read platform_pci_legacy_read
65#define pci_legacy_write platform_pci_legacy_write
66
67struct iospace_resource {
68 struct list_head list;
69 struct resource res;
70};
71
72struct pci_controller {
73 struct acpi_device *companion;
74 void *iommu;
75 int segment;
76 int node; /* nearest node with memory or NUMA_NO_NODE for global allocation */
77
78 void *platform_data;
79};
80
81
82#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
83#define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
84
85extern struct pci_ops pci_root_ops;
86
87static inline int pci_proc_domain(struct pci_bus *bus)
88{
89 return (pci_domain_nr(bus) != 0);
90}
91
92#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
93static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
94{
95 return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
96}
97
98#ifdef CONFIG_INTEL_IOMMU
99extern void pci_iommu_alloc(void);
100#endif
101#endif /* _ASM_IA64_PCI_H */