void __init pcibios_allocate_bus_resources(struct list_head *bus_list) { struct list_head *ln; struct pci_bus *bus; int i; struct resource *res, *pr; if(!bus_list) return; /* Depth-First Search on bus tree */ for (ln = bus_list->next; ln != bus_list; ln=ln->next) { bus = pci_bus_b(ln); pci_read_bridge_bases(bus); for (i = 0; i < 4; ++i) { if ((res = bus->resource[i]) == NULL || !res->flags) continue; if (bus->parent == NULL) pr = (res->flags & IORESOURCE_IO)? &ioport_resource: &iomem_resource; else pr = pci_find_parent_resource(bus->self, res); if (pr && request_resource(pr, res) == 0) continue; printk(KERN_ERR "PCI: Can not allocate resource region " "%d of PCI bridge %d\n", i, bus->number); DBG("PCI: resource is %lx..%lx (%lx)\n", res->start, res->end, res->flags); } pcibios_allocate_bus_resources(&bus->children); } }
static void __init pci_fixup_bus_sysdata_list(struct list_head *bus_list) { struct list_head *ln; struct pci_bus *bus; for (ln = bus_list->next; ln != bus_list; ln = ln->next) { bus = pci_bus_b(ln); if (bus->self) bus->sysdata = bus->self->sysdata; pci_fixup_bus_sysdata_list(&bus->children); } }
static void iommu_buses_init_lpar(struct list_head *bus_list) { struct list_head *ln; struct pci_bus *bus; struct device_node *busdn; unsigned int *dma_window; for (ln=bus_list->next; ln != bus_list; ln=ln->next) { bus = pci_bus_b(ln); busdn = PCI_GET_DN(bus); dma_window = (unsigned int *)get_property(busdn, "ibm,dma-window", 0); if (dma_window) { /* Bussubno hasn't been copied yet. * Do it now because iommu_table_setparms_lpar needs it. */ busdn->bussubno = bus->number; iommu_devnode_init(busdn); } /* look for a window on a bridge even if the PHB had one */ iommu_buses_init_lpar(&bus->children); } }
/* * sn_pci_fixup() - This routine is called when platform_pci_fixup() is * invoked at the end of pcibios_init() to link the Linux pci * infrastructure to SGI IO Infrasturcture - ia64/kernel/pci.c * * Other platform specific fixup can also be done here. */ void sn_pci_fixup(int arg) { struct list_head *ln; struct pci_bus *pci_bus = NULL; struct pci_dev *device_dev = NULL; struct sn_widget_sysdata *widget_sysdata; struct sn_device_sysdata *device_sysdata; #ifdef SN_IOPORTS unsigned long ioport; #endif pciio_intr_t intr_handle; int cpuid, bit; devfs_handle_t device_vertex; pciio_intr_line_t lines; extern void sn_pci_find_bios(void); #ifdef CONFIG_IA64_SGI_SN2 extern int numnodes; int cnode; #endif /* CONFIG_IA64_SGI_SN2 */ if (arg == 0) { sn_init_irq_desc(); sn_pci_find_bios(); #ifdef CONFIG_IA64_SGI_SN2 for (cnode = 0; cnode < numnodes; cnode++) { extern void intr_init_vecblk(nodepda_t *npda, cnodeid_t, int); intr_init_vecblk(NODEPDA(cnode), cnode, 0); } #endif /* CONFIG_IA64_SGI_SN2 */ return; } #if 0 { devfs_handle_t bridge_vhdl = pci_bus_to_vertex(0); pcibr_soft_t pcibr_soft = (pcibr_soft_t) hwgraph_fastinfo_get(bridge_vhdl); bridge_t *bridge = pcibr_soft->bs_base; printk("pci_fixup_ioc3: Before devreg fixup\n"); printk("pci_fixup_ioc3: Devreg 0 0x%x\n", bridge->b_device[0].reg); printk("pci_fixup_ioc3: Devreg 1 0x%x\n", bridge->b_device[1].reg); printk("pci_fixup_ioc3: Devreg 2 0x%x\n", bridge->b_device[2].reg); printk("pci_fixup_ioc3: Devreg 3 0x%x\n", bridge->b_device[3].reg); printk("pci_fixup_ioc3: Devreg 4 0x%x\n", bridge->b_device[4].reg); printk("pci_fixup_ioc3: Devreg 5 0x%x\n", bridge->b_device[5].reg); printk("pci_fixup_ioc3: Devreg 6 0x%x\n", bridge->b_device[6].reg); printk("pci_fixup_ioc3: Devreg 7 0x%x\n", bridge->b_device[7].reg); } #endif done_probing = 1; /* * Initialize the pci bus vertex in the pci_bus struct. */ for( ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) { pci_bus = pci_bus_b(ln); widget_sysdata = kmalloc(sizeof(struct sn_widget_sysdata), GFP_KERNEL); widget_sysdata->vhdl = pci_bus_to_vertex(pci_bus->number); pci_bus->sysdata = (void *)widget_sysdata; } /* * set the root start and end so that drivers calling check_region() * won't see a conflict */ #ifdef SN_IOPORTS ioport_resource.start = sn_ioport_num; ioport_resource.end = 0xffff; #else #if defined(CONFIG_IA64_SGI_SN1) if ( IS_RUNNING_ON_SIMULATOR() ) { /* * IDE legacy IO PORTs are supported in Medusa. * Just open up IO PORTs from 0 .. ioport_resource.end. */ ioport_resource.start = 0; } else { /* * We do not support Legacy IO PORT numbers. */ ioport_resource.start |= IO_SWIZ_BASE | __IA64_UNCACHED_OFFSET; } ioport_resource.end |= (HSPEC_SWIZ_BASE-1) | __IA64_UNCACHED_OFFSET; #else // Need something here for sn2.... ZXZXZX #endif #endif /* * Set the root start and end for Mem Resource. */ iomem_resource.start = 0; iomem_resource.end = 0xffffffffffffffff; /* * Initialize the device vertex in the pci_dev struct. */ pci_for_each_dev(device_dev) { unsigned int irq; int idx; u16 cmd; devfs_handle_t vhdl; unsigned long size; extern int bit_pos_to_irq(int); if (device_dev->vendor == PCI_VENDOR_ID_SGI && device_dev->device == PCI_DEVICE_ID_SGI_IOC3) { extern void pci_fixup_ioc3(struct pci_dev *d); pci_fixup_ioc3(device_dev); } /* Set the device vertex */ device_sysdata = kmalloc(sizeof(struct sn_device_sysdata), GFP_KERNEL); device_sysdata->vhdl = devfn_to_vertex(device_dev->bus->number, device_dev->devfn); device_sysdata->isa64 = 0; /* * Set the xbridge Device(X) Write Buffer Flush and Xbow Flush * register addresses. */ (void) set_flush_addresses(device_dev, device_sysdata); device_dev->sysdata = (void *) device_sysdata; set_sn_pci64(device_dev); pci_read_config_word(device_dev, PCI_COMMAND, &cmd); /* * Set the resources address correctly. The assumption here * is that the addresses in the resource structure has been * read from the card and it was set in the card by our * Infrastructure .. */ vhdl = device_sysdata->vhdl; for (idx = 0; idx < PCI_ROM_RESOURCE; idx++) { size = 0; size = device_dev->resource[idx].end - device_dev->resource[idx].start; if (size) { device_dev->resource[idx].start = (unsigned long)pciio_pio_addr(vhdl, 0, PCIIO_SPACE_WIN(idx), 0, size, 0, PCIIO_BYTE_STREAM); device_dev->resource[idx].start |= __IA64_UNCACHED_OFFSET; } else continue; device_dev->resource[idx].end = device_dev->resource[idx].start + size; #ifdef CONFIG_IA64_SGI_SN1 /* * Adjust the addresses to go to the SWIZZLE .. */ device_dev->resource[idx].start = device_dev->resource[idx].start & 0xfffff7ffffffffff; device_dev->resource[idx].end = device_dev->resource[idx].end & 0xfffff7ffffffffff; #endif if (device_dev->resource[idx].flags & IORESOURCE_IO) { cmd |= PCI_COMMAND_IO; #ifdef SN_IOPORTS ioport = sn_allocate_ioports(device_dev->resource[idx].start); if (ioport < 0) { printk("sn_pci_fixup: PCI Device 0x%x on PCI Bus %d not mapped to IO PORTs .. IO PORTs exhausted\n", device_dev->devfn, device_dev->bus->number); continue; } pciio_config_set(vhdl, (unsigned) PCI_BASE_ADDRESS_0 + (idx * 4), 4, (res + (ioport & 0xfff))); printk("sn_pci_fixup: ioport number %d mapped to pci address 0x%lx\n", ioport, (res + (ioport & 0xfff))); device_dev->resource[idx].start = ioport; device_dev->resource[idx].end = ioport + SN_IOPORTS_UNIT; #endif } if (device_dev->resource[idx].flags & IORESOURCE_MEM) cmd |= PCI_COMMAND_MEMORY; } /* * Now handle the ROM resource .. */ size = device_dev->resource[PCI_ROM_RESOURCE].end - device_dev->resource[PCI_ROM_RESOURCE].start; if (size) { device_dev->resource[PCI_ROM_RESOURCE].start = (unsigned long) pciio_pio_addr(vhdl, 0, PCIIO_SPACE_ROM, 0, size, 0, PCIIO_BYTE_STREAM); device_dev->resource[PCI_ROM_RESOURCE].start |= __IA64_UNCACHED_OFFSET; device_dev->resource[PCI_ROM_RESOURCE].end = device_dev->resource[PCI_ROM_RESOURCE].start + size; #ifdef CONFIG_IA64_SGI_SN1 /* * go through synergy swizzled space */ device_dev->resource[PCI_ROM_RESOURCE].start &= 0xfffff7ffffffffffUL; device_dev->resource[PCI_ROM_RESOURCE].end &= 0xfffff7ffffffffffUL; #endif } /* * Update the Command Word on the Card. */ cmd |= PCI_COMMAND_MASTER; /* If the device doesn't support */ /* bit gets dropped .. no harm */ pci_write_config_word(device_dev, PCI_COMMAND, cmd); pci_read_config_byte(device_dev, PCI_INTERRUPT_PIN, (unsigned char *)&lines); if (device_dev->vendor == PCI_VENDOR_ID_SGI && device_dev->device == PCI_DEVICE_ID_SGI_IOC3 ) { lines = 1; } device_sysdata = (struct sn_device_sysdata *)device_dev->sysdata; device_vertex = device_sysdata->vhdl; intr_handle = pciio_intr_alloc(device_vertex, NULL, lines, device_vertex); bit = intr_handle->pi_irq; cpuid = intr_handle->pi_cpu; #ifdef CONFIG_IA64_SGI_SN1 irq = bit_pos_to_irq(bit); #else /* SN2 */ irq = bit; #endif irq = irq + (cpuid << 8); pciio_intr_connect(intr_handle); device_dev->irq = irq; #ifdef ajmtestintr { int slot = PCI_SLOT(device_dev->devfn); static int timer_set = 0; pcibr_intr_t pcibr_intr = (pcibr_intr_t)intr_handle; pcibr_soft_t pcibr_soft = pcibr_intr->bi_soft; extern void intr_test_handle_intr(int, void*, struct pt_regs *); if (!timer_set) { intr_test_set_timer(); timer_set = 1; } intr_test_register_irq(irq, pcibr_soft, slot); request_irq(irq, intr_test_handle_intr,0,NULL, NULL); } #endif } #if 0 { devfs_handle_t bridge_vhdl = pci_bus_to_vertex(0); pcibr_soft_t pcibr_soft = (pcibr_soft_t) hwgraph_fastinfo_get(bridge_vhdl); bridge_t *bridge = pcibr_soft->bs_base; printk("pci_fixup_ioc3: Before devreg fixup\n"); printk("pci_fixup_ioc3: Devreg 0 0x%x\n", bridge->b_device[0].reg); printk("pci_fixup_ioc3: Devreg 1 0x%x\n", bridge->b_device[1].reg); printk("pci_fixup_ioc3: Devreg 2 0x%x\n", bridge->b_device[2].reg); printk("pci_fixup_ioc3: Devreg 3 0x%x\n", bridge->b_device[3].reg); printk("pci_fixup_ioc3: Devreg 4 0x%x\n", bridge->b_device[4].reg); printk("pci_fixup_ioc3: Devreg 5 0x%x\n", bridge->b_device[5].reg); printk("pci_fixup_ioc3: Devreg 6 0x%x\n", bridge->b_device[6].reg); printk("pci_fixup_ioc3: Devreg 7 0x%x\n", bridge->b_device[7].reg); } printk("testing Big Window: 0xC0000200c0000000 %p\n", *( (volatile uint64_t *)0xc0000200a0000000)); printk("testing Big Window: 0xC0000200c0000008 %p\n", *( (volatile uint64_t *)0xc0000200a0000008)); #endif }