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Commit | Line | Data |
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51533b61 MS |
1 | #include <linux/pci.h> |
2 | #include <linux/kernel.h> | |
556dcee7 | 3 | #include <arch/hwregs/intr_vect.h> |
51533b61 | 4 | |
b881bc46 | 5 | void pcibios_fixup_bus(struct pci_bus *b) |
51533b61 MS |
6 | { |
7 | } | |
8 | ||
51533b61 MS |
9 | void pcibios_set_master(struct pci_dev *dev) |
10 | { | |
11 | u8 lat; | |
12 | pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); | |
13 | printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat); | |
14 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); | |
15 | } | |
16 | ||
17 | int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, | |
18 | enum pci_mmap_state mmap_state, int write_combine) | |
19 | { | |
20 | unsigned long prot; | |
21 | ||
22 | /* Leave vm_pgoff as-is, the PCI space address is the physical | |
23 | * address on this platform. | |
24 | */ | |
51533b61 MS |
25 | prot = pgprot_val(vma->vm_page_prot); |
26 | vma->vm_page_prot = __pgprot(prot); | |
27 | ||
28 | /* Write-combine setting is ignored, it is changed via the mtrr | |
29 | * interfaces on this platform. | |
30 | */ | |
31 | if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, | |
32 | vma->vm_end - vma->vm_start, | |
33 | vma->vm_page_prot)) | |
34 | return -EAGAIN; | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
b26b2d49 | 39 | resource_size_t |
3b7a17fc | 40 | pcibios_align_resource(void *data, const struct resource *res, |
e31dd6e4 | 41 | resource_size_t size, resource_size_t align) |
51533b61 | 42 | { |
b26b2d49 | 43 | resource_size_t start = res->start; |
51533b61 | 44 | |
b26b2d49 DB |
45 | if ((res->flags & IORESOURCE_IO) && (start & 0x300)) |
46 | start = (start + 0x3ff) & ~0x3ff; | |
47 | ||
f7454c5d | 48 | return start; |
51533b61 MS |
49 | } |
50 | ||
51 | int pcibios_enable_resources(struct pci_dev *dev, int mask) | |
52 | { | |
53 | u16 cmd, old_cmd; | |
54 | int idx; | |
55 | struct resource *r; | |
56 | ||
57 | pci_read_config_word(dev, PCI_COMMAND, &cmd); | |
58 | old_cmd = cmd; | |
59 | for(idx=0; idx<6; idx++) { | |
60 | /* Only set up the requested stuff */ | |
61 | if (!(mask & (1<<idx))) | |
62 | continue; | |
63 | ||
64 | r = &dev->resource[idx]; | |
65 | if (!r->start && r->end) { | |
66 | printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); | |
67 | return -EINVAL; | |
68 | } | |
69 | if (r->flags & IORESOURCE_IO) | |
70 | cmd |= PCI_COMMAND_IO; | |
71 | if (r->flags & IORESOURCE_MEM) | |
72 | cmd |= PCI_COMMAND_MEMORY; | |
73 | } | |
74 | if (dev->resource[PCI_ROM_RESOURCE].start) | |
75 | cmd |= PCI_COMMAND_MEMORY; | |
76 | if (cmd != old_cmd) { | |
77 | printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); | |
78 | pci_write_config_word(dev, PCI_COMMAND, cmd); | |
79 | } | |
80 | return 0; | |
81 | } | |
82 | ||
83 | int pcibios_enable_irq(struct pci_dev *dev) | |
84 | { | |
85 | dev->irq = EXT_INTR_VECT; | |
86 | return 0; | |
87 | } | |
88 | ||
89 | int pcibios_enable_device(struct pci_dev *dev, int mask) | |
90 | { | |
91 | int err; | |
92 | ||
93 | if ((err = pcibios_enable_resources(dev, mask)) < 0) | |
94 | return err; | |
95 | ||
bba6f6fc EB |
96 | if (!dev->msi_enabled) |
97 | pcibios_enable_irq(dev); | |
98 | return 0; | |
51533b61 | 99 | } |