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authorJason Jin <Jason.jin@freescale.com>2011-10-28 16:08:00 +0800
committerKumar Gala <galak@kernel.crashing.org>2011-11-24 02:01:40 -0600
commit05737c7c5bca9a4f3e0f8bb9476445971b64fafd (patch)
tree0bfcae85adb9cac4cba6cf8578d0128941f23668 /arch/powerpc/kernel/pci-common.c
parent54986964c13c72f0a6cf58855ee376a12e21d2d7 (diff)
powerpc/fsl-pci: Don't hide resource for pci/e when configured as Agent/EP
Current pci/pcie init code will hide the pci/pcie host resource. But did not judge it is host/RC or agent/EP. If configured as agent/EP, we should avoid hiding its resource in the host side. In PCI system, the Programing Interface can be used to judge the host/agent status: Programing Interface = 0: host Programing Interface = 1: Agent In PCIE system, both the Programing Interface and Header type can be used to judge the RC/EP status. Header Type = 0: EP Header Type = 1: RC Signed-off-by: Jason Jin <Jason.jin@freescale.com> Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
-rw-r--r--arch/powerpc/kernel/pci-common.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 458ed3bee663..069aa75e7161 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1747,10 +1747,13 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose)
static void fixup_hide_host_resource_fsl(struct pci_dev *dev)
{
int i, class = dev->class >> 8;
+ /* When configured as agent, programing interface = 1 */
+ int prog_if = dev->class & 0xf;
if ((class == PCI_CLASS_PROCESSOR_POWERPC ||
class == PCI_CLASS_BRIDGE_OTHER) &&
(dev->hdr_type == PCI_HEADER_TYPE_NORMAL) &&
+ (prog_if == 0) &&
(dev->bus->parent == NULL)) {
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
dev->resource[i].start = 0;