projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 51533b61 MS |
1 | #include <linux/pci.h> |
| 2 | #include <linux/kernel.h> | |
| 556dcee7 | 3 | #include <arch/hwregs/intr_vect.h> |
| 51533b61 MS |
4 | |
| 5 | void __devinit pcibios_fixup_bus(struct pci_bus *b) | |
| 6 | { | |
| 7 | } | |
| 8 | ||
| 9 | char * __devinit pcibios_setup(char *str) | |
| 10 | { | |
| 11 | return NULL; | |
| 12 | } | |
| 13 | ||
| 14 | void pcibios_set_master(struct pci_dev *dev) | |
| 15 | { | |
| 16 | u8 lat; | |
| 17 | pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); | |
| 18 | printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat); | |
| 19 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); | |
| 20 | } | |
| 21 | ||
| 22 | int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, | |
| 23 | enum pci_mmap_state mmap_state, int write_combine) | |
| 24 | { | |
| 25 | unsigned long prot; | |
| 26 | ||
| 27 | /* Leave vm_pgoff as-is, the PCI space address is the physical | |
| 28 | * address on this platform. | |
| 29 | */ | |
| 51533b61 MS |
30 | prot = pgprot_val(vma->vm_page_prot); |
| 31 | vma->vm_page_prot = __pgprot(prot); | |
| 32 | ||
| 33 | /* Write-combine setting is ignored, it is changed via the mtrr | |
| 34 | * interfaces on this platform. | |
| 35 | */ | |
| 36 | if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, | |
| 37 | vma->vm_end - vma->vm_start, | |
| 38 | vma->vm_page_prot)) | |
| 39 | return -EAGAIN; | |
| 40 | ||
| 41 | return 0; | |
| 42 | } | |
| 43 | ||
| b26b2d49 | 44 | resource_size_t |
| 3b7a17fc | 45 | pcibios_align_resource(void *data, const struct resource *res, |
| e31dd6e4 | 46 | resource_size_t size, resource_size_t align) |
| 51533b61 | 47 | { |
| b26b2d49 | 48 | resource_size_t start = res->start; |
| 51533b61 | 49 | |
| b26b2d49 DB |
50 | if ((res->flags & IORESOURCE_IO) && (start & 0x300)) |
| 51 | start = (start + 0x3ff) & ~0x3ff; | |
| 52 | ||
| 53 | return start | |
| 51533b61 MS |
54 | } |
| 55 | ||
| 56 | int pcibios_enable_resources(struct pci_dev *dev, int mask) | |
| 57 | { | |
| 58 | u16 cmd, old_cmd; | |
| 59 | int idx; | |
| 60 | struct resource *r; | |
| 61 | ||
| 62 | pci_read_config_word(dev, PCI_COMMAND, &cmd); | |
| 63 | old_cmd = cmd; | |
| 64 | for(idx=0; idx<6; idx++) { | |
| 65 | /* Only set up the requested stuff */ | |
| 66 | if (!(mask & (1<<idx))) | |
| 67 | continue; | |
| 68 | ||
| 69 | r = &dev->resource[idx]; | |
| 70 | if (!r->start && r->end) { | |
| 71 | printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); | |
| 72 | return -EINVAL; | |
| 73 | } | |
| 74 | if (r->flags & IORESOURCE_IO) | |
| 75 | cmd |= PCI_COMMAND_IO; | |
| 76 | if (r->flags & IORESOURCE_MEM) | |
| 77 | cmd |= PCI_COMMAND_MEMORY; | |
| 78 | } | |
| 79 | if (dev->resource[PCI_ROM_RESOURCE].start) | |
| 80 | cmd |= PCI_COMMAND_MEMORY; | |
| 81 | if (cmd != old_cmd) { | |
| 82 | printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); | |
| 83 | pci_write_config_word(dev, PCI_COMMAND, cmd); | |
| 84 | } | |
| 85 | return 0; | |
| 86 | } | |
| 87 | ||
| 88 | int pcibios_enable_irq(struct pci_dev *dev) | |
| 89 | { | |
| 90 | dev->irq = EXT_INTR_VECT; | |
| 91 | return 0; | |
| 92 | } | |
| 93 | ||
| 94 | int pcibios_enable_device(struct pci_dev *dev, int mask) | |
| 95 | { | |
| 96 | int err; | |
| 97 | ||
| 98 | if ((err = pcibios_enable_resources(dev, mask)) < 0) | |
| 99 | return err; | |
| 100 | ||
| bba6f6fc EB |
101 | if (!dev->msi_enabled) |
| 102 | pcibios_enable_irq(dev); | |
| 103 | return 0; | |
| 51533b61 MS |
104 | } |
| 105 | ||
| 106 | int pcibios_assign_resources(void) | |
| 107 | { | |
| 108 | struct pci_dev *dev = NULL; | |
| 109 | int idx; | |
| 110 | struct resource *r; | |
| 111 | ||
| 112 | while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { | |
| 113 | int class = dev->class >> 8; | |
| 114 | ||
| 115 | /* Don't touch classless devices and host bridges */ | |
| 116 | if (!class || class == PCI_CLASS_BRIDGE_HOST) | |
| 117 | continue; | |
| 118 | ||
| 119 | for(idx=0; idx<6; idx++) { | |
| 120 | r = &dev->resource[idx]; | |
| 121 | ||
| 122 | if (!r->start && r->end) | |
| 123 | pci_assign_resource(dev, idx); | |
| 124 | } | |
| 125 | } | |
| 126 | return 0; | |
| 127 | } | |
| 128 | ||
| 129 | EXPORT_SYMBOL(pcibios_assign_resources); |