1 #include <linux/kernel.h>
2 #include <linux/init.h>
3 #include <linux/types.h>
8 #include <asm/ddb5xxx/ddb5xxx.h>
10 static struct resource extpci_io_resource = {
12 0x1000, /* leave some room for ISA bus */
17 static struct resource extpci_mem_resource = {
19 DDB_PCI_MEM_BASE + 0x00100000, /* leave 1 MB for RTC */
20 DDB_PCI_MEM_BASE + DDB_PCI_MEM_SIZE - 1,
24 extern struct pci_ops ddb5476_ext_pci_ops;
26 struct pci_controller ddb5476_controller = {
27 .pci_ops = &ddb5476_ext_pci_ops,
28 .io_resource = &extpci_io_resource,
29 .mem_resource = &extpci_mem_resource,
32 #define PCI_EXT_INTA 8
33 #define PCI_EXT_INTB 9
34 #define PCI_EXT_INTC 10
35 #define PCI_EXT_INTD 11
36 #define PCI_EXT_INTE 12
38 #define MAX_SLOT_NUM 14
40 static unsigned char irq_map[MAX_SLOT_NUM] = {
41 [ 0] = nile4_to_irq(PCI_EXT_INTE),
42 [ 1] = nile4_to_irq(PCI_EXT_INTA),
43 [ 2] = nile4_to_irq(PCI_EXT_INTA),
44 [ 3] = nile4_to_irq(PCI_EXT_INTB),
45 [ 4] = nile4_to_irq(PCI_EXT_INTC),
46 [ 5] = nile4_to_irq(NILE4_INT_UART),
47 [10] = nile4_to_irq(PCI_EXT_INTE),
48 [13] = nile4_to_irq(PCI_EXT_INTE),
51 int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
56 /* Do platform specific device initialization at pci_enable_device() time */
57 int pcibios_plat_dev_init(struct pci_dev *dev)
62 void __init ddb_pci_reset_bus(void)
67 * I am not sure about the "official" procedure, the following
68 * steps work as far as I know:
69 * We first set PCI cold reset bit (bit 31) in PCICTRL-H.
70 * Then we clear the PCI warm reset bit (bit 30) to 0 in PCICTRL-H.
71 * The same is true for both PCI channels.
73 temp = ddb_in32(DDB_PCICTRL + 4);
75 ddb_out32(DDB_PCICTRL + 4, temp);
77 ddb_out32(DDB_PCICTRL + 4, temp);