static int pci_mmcfg_write(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 value) { char __iomem *addr; /* Why do we have this when nobody checks it. How about a BUG()!? -AK */ if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095))) return -EINVAL; addr = pci_dev_base(seg, bus, devfn); if (!addr) return pci_conf1_write(seg,bus,devfn,reg,len,value); switch (len) { case 1: writeb(value, addr + reg); break; case 2: writew(value, addr + reg); break; case 4: writel(value, addr + reg); break; } return 0; }
static int pci_mmcfg_write(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 value) { unsigned long flags; u32 base; if ((bus > 255) || (devfn > 255) || (reg > 4095)) return -EINVAL; base = get_base_addr(seg, bus, devfn); if (!base) return pci_conf1_write(seg,bus,devfn,reg,len,value); spin_lock_irqsave(&pci_config_lock, flags); pci_exp_set_dev_base(base, bus, devfn); switch (len) { case 1: writeb(value, mmcfg_virt_addr + reg); break; case 2: writew(value, mmcfg_virt_addr + reg); break; case 4: writel(value, mmcfg_virt_addr + reg); break; } spin_unlock_irqrestore(&pci_config_lock, flags); return 0; }
static int pci_conf1_write_config_dword(struct pci_dev *dev, int where, u32 value) { return pci_conf1_write(0, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn), where, 4, value); }
static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) { return pci_conf1_write(pci_domain_nr(bus), bus->number, devfn, where, size, value); }