diff options
Diffstat (limited to 'arch/powerpc/kernel/prom_parse.c')
| -rw-r--r-- | arch/powerpc/kernel/prom_parse.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c index c2b7a07cc3d..47187cc2cf0 100644 --- a/arch/powerpc/kernel/prom_parse.c +++ b/arch/powerpc/kernel/prom_parse.c | |||
| @@ -2,95 +2,11 @@ | |||
| 2 | 2 | ||
| 3 | #include <linux/kernel.h> | 3 | #include <linux/kernel.h> |
| 4 | #include <linux/string.h> | 4 | #include <linux/string.h> |
| 5 | #include <linux/pci_regs.h> | ||
| 6 | #include <linux/module.h> | 5 | #include <linux/module.h> |
| 7 | #include <linux/ioport.h> | 6 | #include <linux/ioport.h> |
| 8 | #include <linux/etherdevice.h> | 7 | #include <linux/etherdevice.h> |
| 9 | #include <linux/of_address.h> | 8 | #include <linux/of_address.h> |
| 10 | #include <asm/prom.h> | 9 | #include <asm/prom.h> |
| 11 | #include <asm/pci-bridge.h> | ||
| 12 | |||
| 13 | #ifdef CONFIG_PCI | ||
| 14 | int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq) | ||
| 15 | { | ||
| 16 | struct device_node *dn, *ppnode; | ||
| 17 | struct pci_dev *ppdev; | ||
| 18 | u32 lspec; | ||
| 19 | u32 laddr[3]; | ||
| 20 | u8 pin; | ||
| 21 | int rc; | ||
| 22 | |||
| 23 | /* Check if we have a device node, if yes, fallback to standard OF | ||
| 24 | * parsing | ||
| 25 | */ | ||
| 26 | dn = pci_device_to_OF_node(pdev); | ||
| 27 | if (dn) { | ||
| 28 | rc = of_irq_map_one(dn, 0, out_irq); | ||
| 29 | if (!rc) | ||
| 30 | return rc; | ||
| 31 | } | ||
| 32 | |||
| 33 | /* Ok, we don't, time to have fun. Let's start by building up an | ||
| 34 | * interrupt spec. we assume #interrupt-cells is 1, which is standard | ||
| 35 | * for PCI. If you do different, then don't use that routine. | ||
| 36 | */ | ||
| 37 | rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin); | ||
| 38 | if (rc != 0) | ||
| 39 | return rc; | ||
| 40 | /* No pin, exit */ | ||
| 41 | if (pin == 0) | ||
| 42 | return -ENODEV; | ||
| 43 | |||
| 44 | /* Now we walk up the PCI tree */ | ||
| 45 | lspec = pin; | ||
| 46 | for (;;) { | ||
| 47 | /* Get the pci_dev of our parent */ | ||
| 48 | ppdev = pdev->bus->self; | ||
| 49 | |||
| 50 | /* Ouch, it's a host bridge... */ | ||
| 51 | if (ppdev == NULL) { | ||
| 52 | #ifdef CONFIG_PPC64 | ||
| 53 | ppnode = pci_bus_to_OF_node(pdev->bus); | ||
| 54 | #else | ||
| 55 | struct pci_controller *host; | ||
| 56 | host = pci_bus_to_host(pdev->bus); | ||
| 57 | ppnode = host ? host->dn : NULL; | ||
| 58 | #endif | ||
| 59 | /* No node for host bridge ? give up */ | ||
| 60 | if (ppnode == NULL) | ||
| 61 | return -EINVAL; | ||
| 62 | } else | ||
| 63 | /* We found a P2P bridge, check if it has a node */ | ||
| 64 | ppnode = pci_device_to_OF_node(ppdev); | ||
| 65 | |||
| 66 | /* Ok, we have found a parent with a device-node, hand over to | ||
| 67 | * the OF parsing code. | ||
| 68 | * We build a unit address from the linux device to be used for | ||
| 69 | * resolution. Note that we use the linux bus number which may | ||
| 70 | * not match your firmware bus numbering. | ||
| 71 | * Fortunately, in most cases, interrupt-map-mask doesn't include | ||
| 72 | * the bus number as part of the matching. | ||
| 73 | * You should still be careful about that though if you intend | ||
| 74 | * to rely on this function (you ship a firmware that doesn't | ||
| 75 | * create device nodes for all PCI devices). | ||
| 76 | */ | ||
| 77 | if (ppnode) | ||
| 78 | break; | ||
| 79 | |||
| 80 | /* We can only get here if we hit a P2P bridge with no node, | ||
| 81 | * let's do standard swizzling and try again | ||
| 82 | */ | ||
| 83 | lspec = pci_swizzle_interrupt_pin(pdev, lspec); | ||
| 84 | pdev = ppdev; | ||
| 85 | } | ||
| 86 | |||
| 87 | laddr[0] = (pdev->bus->number << 16) | ||
| 88 | | (pdev->devfn << 8); | ||
| 89 | laddr[1] = laddr[2] = 0; | ||
| 90 | return of_irq_map_raw(ppnode, &lspec, 1, laddr, out_irq); | ||
| 91 | } | ||
| 92 | EXPORT_SYMBOL_GPL(of_irq_map_pci); | ||
| 93 | #endif /* CONFIG_PCI */ | ||
| 94 | 10 | ||
| 95 | void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, | 11 | void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, |
| 96 | unsigned long *busno, unsigned long *phys, unsigned long *size) | 12 | unsigned long *busno, unsigned long *phys, unsigned long *size) |
