Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-19 02:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

powerpc/85xx: Add host-pci(e) bridge only for RC

Browse Source 
FSL PCIe controller can act as agent(EP) or host(RC).  Under Agent(EP) mode
the controller will be configured by the host system.  So its not required
to be registered with the PCI(e) sub-system. We only register the
controller if its configured in host(RC) mode.

Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Prabhakar Kushwaha 2011-05-23 15:53:25 +05:30 committed by Kumar Gala
parent 3907ab2686
commit 08871c097e
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/powerpc/sysdev/fsl_pci.c
View File

@ -330,6 +330,7 @@ int __init fsl_add_bridge(struct device_node *dev, int is_primary)
struct pci_controller *hose;
struct resource rsrc;
const int *bus_range;
u8 progif;
if (!of_device_is_available(dev)) {
pr_warning("%s: disabled\n", dev->full_name);
@ -360,6 +361,18 @@ int __init fsl_add_bridge(struct device_node *dev, int is_primary)
setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
PPC_INDIRECT_TYPE_BIG_ENDIAN);
early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif);
if ((progif & 1) == 1) {
/* unmap cfg_data & cfg_addr separately if not on same page */
if (((unsigned long)hose->cfg_data & PAGE_MASK) !=
((unsigned long)hose->cfg_addr & PAGE_MASK))
iounmap(hose->cfg_data);
iounmap(hose->cfg_addr);
pcibios_free_controller(hose);
return 0;
}
setup_pci_cmd(hose);
/* check PCI express link status */