| #include <linux/pci.h> |
| #include <linux/kernel.h> |
| #include <hwregs/intr_vect.h> |
| |
| void pcibios_fixup_bus(struct pci_bus *b) |
| { |
| } |
| |
| void pcibios_set_master(struct pci_dev *dev) |
| { |
| u8 lat; |
| pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); |
| printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat); |
| pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); |
| } |
| |
| int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, |
| enum pci_mmap_state mmap_state, int write_combine) |
| { |
| unsigned long prot; |
| |
| /* Leave vm_pgoff as-is, the PCI space address is the physical |
| * address on this platform. |
| */ |
| prot = pgprot_val(vma->vm_page_prot); |
| vma->vm_page_prot = __pgprot(prot); |
| |
| /* Write-combine setting is ignored, it is changed via the mtrr |
| * interfaces on this platform. |
| */ |
| if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| vma->vm_end - vma->vm_start, |
| vma->vm_page_prot)) |
| return -EAGAIN; |
| |
| return 0; |
| } |
| |
| resource_size_t |
| pcibios_align_resource(void *data, const struct resource *res, |
| resource_size_t size, resource_size_t align) |
| { |
| resource_size_t start = res->start; |
| |
| if ((res->flags & IORESOURCE_IO) && (start & 0x300)) |
| start = (start + 0x3ff) & ~0x3ff; |
| |
| return start; |
| } |
| |
| int pcibios_enable_resources(struct pci_dev *dev, int mask) |
| { |
| u16 cmd, old_cmd; |
| int idx; |
| struct resource *r; |
| |
| pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| old_cmd = cmd; |
| for(idx=0; idx<6; idx++) { |
| /* Only set up the requested stuff */ |
| if (!(mask & (1<<idx))) |
| continue; |
| |
| r = &dev->resource[idx]; |
| if (!r->start && r->end) { |
| printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); |
| return -EINVAL; |
| } |
| if (r->flags & IORESOURCE_IO) |
| cmd |= PCI_COMMAND_IO; |
| if (r->flags & IORESOURCE_MEM) |
| cmd |= PCI_COMMAND_MEMORY; |
| } |
| if (dev->resource[PCI_ROM_RESOURCE].start) |
| cmd |= PCI_COMMAND_MEMORY; |
| if (cmd != old_cmd) { |
| printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); |
| pci_write_config_word(dev, PCI_COMMAND, cmd); |
| } |
| return 0; |
| } |
| |
| int pcibios_enable_irq(struct pci_dev *dev) |
| { |
| dev->irq = EXT_INTR_VECT; |
| return 0; |
| } |
| |
| int pcibios_enable_device(struct pci_dev *dev, int mask) |
| { |
| int err; |
| |
| if ((err = pcibios_enable_resources(dev, mask)) < 0) |
| return err; |
| |
| if (!dev->msi_enabled) |
| pcibios_enable_irq(dev); |
| return 0; |
| } |
