void __init
ibm_prep_init(void)
{
-#ifdef CONFIG_PREP_RESIDUAL
- u32 addr, real_addr, len;
- PPC_DEVICE *mpic;
- PnP_TAG_PACKET *pkt;
-
- /* Use the PReP residual data to determine if an OpenPIC is
- * present. If so, get the large vendor packet which will
- * tell us the base address and length in memory.
- * If we are successful, ioremap the memory area and set
- * OpenPIC_Addr (this indicates that the OpenPIC was found).
- */
- mpic = residual_find_device(-1, NULL, SystemPeripheral,
- ProgrammableInterruptController, MPIC, 0);
- if (!mpic)
- return;
+ if (have_residual_data) {
+ u32 addr, real_addr, len, offset;
+ PPC_DEVICE *mpic;
+ PnP_TAG_PACKET *pkt;
+
+ /* Use the PReP residual data to determine if an OpenPIC is
+ * present. If so, get the large vendor packet which will
+ * tell us the base address and length in memory.
+ * If we are successful, ioremap the memory area and set
+ * OpenPIC_Addr (this indicates that the OpenPIC was found).
+ */
+ mpic = residual_find_device(-1, NULL, SystemPeripheral,
+ ProgrammableInterruptController, MPIC, 0);
+ if (!mpic)
+ return;
- pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
- mpic->AllocatedOffset, 9, 0);
+ pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
+ mpic->AllocatedOffset, 9, 0);
- if (!pkt)
- return;
+ if (!pkt)
+ return;
#define p pkt->L4_Pack.L4_Data.L4_PPCPack
- if (!((p.PPCData[0] == 2) && (p.PPCData[1] == 32)))
- return; /* not a 32-bit memory address */
+ if (p.PPCData[1] == 32) {
+ switch (p.PPCData[0]) {
+ case 1: offset = PREP_ISA_IO_BASE; break;
+ case 2: offset = PREP_ISA_MEM_BASE; break;
+ default: return; /* Not I/O or memory?? */
+ }
+ }
+ else
+ return; /* Not a 32-bit address */
- real_addr = ld_le32((unsigned int *) (p.PPCData + 4));
- if (real_addr == 0xffffffff)
- return;
+ real_addr = ld_le32((unsigned int *) (p.PPCData + 4));
+ if (real_addr == 0xffffffff)
+ return;
- /* Adjust address to be as seen by CPU */
- addr = real_addr + PREP_ISA_MEM_BASE;
+ /* Adjust address to be as seen by CPU */
+ addr = real_addr + offset;
- len = ld_le32((unsigned int *) (p.PPCData + 12));
- if (!len)
- return;
+ len = ld_le32((unsigned int *) (p.PPCData + 12));
+ if (!len)
+ return;
#undef p
- OpenPIC_Addr = ioremap(addr, len);
- ppc_md.get_irq = openpic_get_irq;
+ OpenPIC_Addr = ioremap(addr, len);
+ ppc_md.get_irq = openpic_get_irq;
- OpenPIC_InitSenses = prep_openpic_initsenses;
- OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
+ OpenPIC_InitSenses = prep_openpic_initsenses;
+ OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
- printk(KERN_INFO "MPIC at 0x%08x (0x%08x), length 0x%08x "
- "mapped to 0x%p\n", addr, real_addr, len, OpenPIC_Addr);
-#endif
+ printk(KERN_INFO "MPIC at 0x%08x (0x%08x), length 0x%08x "
+ "mapped to 0x%p\n", addr, real_addr, len, OpenPIC_Addr);
+ }
}
static void __init
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
+void __init
+prep_residual_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ if (have_residual_data) {
+ Motherboard_map_name = res->VitalProductData.PrintableModel;
+ Motherboard_map = NULL;
+ Motherboard_routes = NULL;
+ residual_irq_mask(irq_edge_mask_lo, irq_edge_mask_hi);
+ }
+}
+
void __init
prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
}
} else if ( _prep_type == _PREP_IBM ) {
unsigned char irq_edge_mask_lo, irq_edge_mask_hi;
+ unsigned short irq_edge_mask;
+ int i;
setup_ibm_pci(&irq_edge_mask_lo, &irq_edge_mask_hi);
outb(inb(0x04d0)|irq_edge_mask_lo, 0x4d0); /* primary 8259 */
outb(inb(0x04d1)|irq_edge_mask_hi, 0x4d1); /* cascaded 8259 */
+
+ irq_edge_mask = (irq_edge_mask_hi << 8) | irq_edge_mask_lo;
+ for (i = 0; i < 16; ++i, irq_edge_mask >>= 1)
+ if (irq_edge_mask & 1)
+ irq_desc[i].status |= IRQ_LEVEL;
} else {
printk("No known machine pci routing!\n");
return;
}
/* Set up mapping from slots */
- for (i = 1; i <= 4; i++)
- ibc_pirq[i-1] = Motherboard_routes[i];
- /* Enable PCI interrupts */
- *ibc_pcicon |= 0x20;
+ if (Motherboard_routes) {
+ for (i = 1; i <= 4; i++)
+ ibc_pirq[i-1] = Motherboard_routes[i];
+
+ /* Enable PCI interrupts */
+ *ibc_pcicon |= 0x20;
+ }
}
void __init
prep_pcibios_fixup(void)
{
struct pci_dev *dev = NULL;
+ int irq;
+ int have_openpic = (OpenPIC_Addr != NULL);
prep_route_pci_interrupts();
printk("Setting PCI interrupts for a \"%s\"\n", Motherboard_map_name);
- if (OpenPIC_Addr) {
- /* PCI interrupts are controlled by the OpenPIC */
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- if (dev->bus->number == 0) {
- dev->irq = openpic_to_irq(Motherboard_map[PCI_SLOT(dev->devfn)]);
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
- } else {
- if (Motherboard_non0 != NULL)
- Motherboard_non0(dev);
- }
- }
-
- /* Setup the Winbond or Via PIB */
- prep_pib_init();
-
- return;
- }
- dev = NULL;
+ /* Iterate through all the PCI devices, setting the IRQ */
while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
/*
- * Use our old hard-coded kludge to figure out what
- * irq this device uses. This is necessary on things
- * without residual data. -- Cort
+ * If we have residual data, then this is easy: query the
+ * residual data for the IRQ line allocated to the device.
+ * This works the same whether we have an OpenPic or not.
+ */
+ if (have_residual_data) {
+ irq = residual_pcidev_irq(dev);
+ dev->irq = have_openpic ? openpic_to_irq(irq) : irq;
+ }
+ /*
+ * If we don't have residual data, then we need to use
+ * tables to determine the IRQ. The table organisation
+ * is different depending on whether there is an OpenPIC
+ * or not. The tables are only used for bus 0, so check
+ * this first.
*/
- unsigned char d = PCI_SLOT(dev->devfn);
- dev->irq = Motherboard_routes[Motherboard_map[d]];
+ else if (dev->bus->number == 0) {
+ irq = Motherboard_map[PCI_SLOT(dev->devfn)];
+ dev->irq = have_openpic ? openpic_to_irq(irq)
+ : Motherboard_routes[irq];
+ }
+ /*
+ * Finally, if we don't have residual data and the bus is
+ * non-zero, use the callback (if provided)
+ */
+ else {
+ if (Motherboard_non0 != NULL)
+ Motherboard_non0(dev);
+
+ continue;
+ }
+
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
+
+ /* Setup the Winbond or Via PIB */
+ prep_pib_init();
}
static void __init
PREP_ISA_IO_BASE + 0xcfc);
printk("PReP architecture\n");
-#ifdef CONFIG_PREP_RESIDUAL
- {
+
+ if (have_residual_data) {
PPC_DEVICE *hostbridge;
hostbridge = residual_find_device(PROCESSORDEVICE, NULL,
BridgeController, PCIBridge, -1, 0);
if (hostbridge &&
- hostbridge->DeviceId.Interface == PCIBridgeIndirect) {
+ ((hostbridge->DeviceId.Interface == PCIBridgeIndirect) ||
+ (hostbridge->DeviceId.Interface == PCIBridgeRS6K))) {
PnP_TAG_PACKET * pkt;
pkt = PnP_find_large_vendor_packet(
res->DevicePnPHeap+hostbridge->AllocatedOffset,
setup_indirect_pci(hose, 0x80000cf8, 0x80000cfc);
}
}
-#endif /* CONFIG_PREP_RESIDUAL */
ppc_md.pcibios_fixup = prep_pcibios_fixup;
ppc_md.pcibios_after_init = prep_pcibios_after_init;
git://git.onelab.eu / linux-2.6.git / blobdiff