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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-02-19 18:20:41 +0300
committerKim Phillips <kim.phillips@freescale.com>2009-02-23 15:51:10 -0600
commitcc2a8c7751ddbae3116660064f446888538b93e9 (patch)
treeba61cef3f050c33d99558d99da8e56e773413e0b
parent741a1ea97335c88747a2de6677b92458d6ada00b (diff)
downloadu-boot-linaro-stable-cc2a8c7751ddbae3116660064f446888538b93e9.tar.gz
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 <avorontsov@ru.mvista.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
-rw-r--r--drivers/pci/pci.c13
-rw-r--r--include/pci.h2
2 files changed, 15 insertions, 0 deletions
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