From cc2a8c7751ddbae3116660064f446888538b93e9 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 19 Feb 2009 18:20:41 +0300 Subject: PCI: Add pci_last_busno() helper This is just a handy routine that reports last PCI busno: we walk down all the hoses and return last hose's last_busno. Will be used by PCI/PCIe initialization code. Signed-off-by: Anton Vorontsov Signed-off-by: Kim Phillips --- drivers/pci/pci.c | 13 +++++++++++++ include/pci.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index fffca49fc..d6d2d6e4a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -165,6 +165,19 @@ struct pci_controller *pci_bus_to_hose (int bus) return NULL; } +int pci_last_busno(void) +{ + struct pci_controller *hose = hose_head; + + if (!hose) + return -1; + + while (hose->next) + hose = hose->next; + + return hose->last_busno; +} + #ifndef CONFIG_IXP425 pci_dev_t pci_find_devices(struct pci_device_id *ids, int index) { diff --git a/include/pci.h b/include/pci.h index d0594e316..aaa455434 100644 --- a/include/pci.h +++ b/include/pci.h @@ -535,6 +535,8 @@ extern int pci_hose_config_device(struct pci_controller *hose, pci_addr_t mem, unsigned long command); +int pci_last_busno(void); + #ifdef CONFIG_MPC824X extern void pci_mpc824x_init (struct pci_controller *hose); #endif -- cgit v1.2.3