| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| |
| #include <asm/machdep.h> |
| #include <platforms/gemini.h> |
| #include <asm/byteorder.h> |
| #include <asm/io.h> |
| #include <asm/uaccess.h> |
| #include <asm/pci-bridge.h> |
| |
| #define pci_config_addr(bus,dev,offset) \ |
| (0x80000000 | (bus<<16) | (dev<<8) | offset) |
| |
| |
| int |
| gemini_pcibios_read_config_byte(struct pci_dev *dev, int offset, u8 *val) |
| { |
| unsigned long reg; |
| reg = grackle_read(pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3)))); |
| *val = ((reg >> ((offset & 0x3) << 3)) & 0xff); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| int |
| gemini_pcibios_read_config_word(struct pci_dev *dev, int offset, u16 *val) |
| { |
| unsigned long reg; |
| reg = grackle_read(pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3)))); |
| *val = ((reg >> ((offset & 0x3) << 3)) & 0xffff); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| int |
| gemini_pcibios_read_config_dword(struct pci_dev *dev, int offset, u32 *val) |
| { |
| *val = grackle_read(pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3)))); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| int |
| gemini_pcibios_write_config_byte(struct pci_dev *dev, int offset, u8 val) |
| { |
| unsigned long reg; |
| int shifts = offset & 0x3; |
| unsigned int addr = pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3))); |
| |
| reg = grackle_read(addr); |
| reg = (reg & ~(0xff << (shifts << 3))) | (val << (shifts << 3)); |
| grackle_write(addr, reg ); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| int |
| gemini_pcibios_write_config_word(struct pci_dev *dev, int offset, u16 val) |
| { |
| unsigned long reg; |
| int shifts = offset & 0x3; |
| unsigned int addr = pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3))); |
| |
| reg = grackle_read(addr); |
| reg = (reg & ~(0xffff << (shifts << 3))) | (val << (shifts << 3)); |
| grackle_write(addr, reg ); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| int |
| gemini_pcibios_write_config_dword(struct pci_dev *dev, int offset, u32 val) |
| { |
| grackle_write(pci_config_addr(dev->bus->number, dev->devfn, |
| (offset & ~(0x3))), val); |
| return PCIBIOS_SUCCESSFUL; |
| } |
| |
| static struct pci_ops gemini_pci_ops = |
| { |
| gemini_pcibios_read_config_byte, |
| gemini_pcibios_read_config_word, |
| gemini_pcibios_read_config_dword, |
| gemini_pcibios_write_config_byte, |
| gemini_pcibios_write_config_word, |
| gemini_pcibios_write_config_dword |
| }; |
| |
| void __init gemini_pcibios_fixup(void) |
| { |
| int i; |
| struct pci_dev *dev; |
| |
| pci_for_each_dev(dev) { |
| for(i = 0; i < 6; i++) { |
| if (dev->resource[i].flags & IORESOURCE_IO) { |
| dev->resource[i].start |= (0xfe << 24); |
| dev->resource[i].end |= (0xfe << 24); |
| } |
| } |
| } |
| } |
| |
| |
| /* The "bootloader" for Synergy boards does none of this for us, so we need to |
| lay it all out ourselves... --Dan */ |
| void __init gemini_find_bridges(void) |
| { |
| struct pci_controller* hose; |
| |
| ppc_md.pcibios_fixup = gemini_pcibios_fixup; |
| |
| hose = pcibios_alloc_controller(); |
| if (!hose) |
| return; |
| hose->ops = &gemini_pci_ops; |
| } |