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authorKumar Gala <galak@kernel.crashing.org>2009-05-12 15:51:56 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-05-19 00:50:38 -0500
commit3da34aae03d498ee62f75aa7467de93cce3030fd (patch)
treef2cbdc5e8cd09801ca32d26977cbf4eb8feae415 /arch/powerpc/sysdev
parent12ac426f889f3a6b821c7ca73e74d83f0fc84c13 (diff)
downloadop-kernel-dev-3da34aae03d498ee62f75aa7467de93cce3030fd.zip
op-kernel-dev-3da34aae03d498ee62f75aa7467de93cce3030fd.tar.gz
powerpc/fsl: Support unique MSI addresses per PCIe Root Complex
Its feasible based on how the PCI address map is setup that the region of PCI address space used for MSIs differs for each PHB on the same SoC. Instead of assuming that the address mappes to CCSRBAR 1:1 we read PEXCSRBAR (BAR0) for the PHB that the given pci_dev is on. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r--arch/powerpc/sysdev/fsl_msi.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index f25ce81..da38a1f 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -113,8 +113,13 @@ static void fsl_compose_msi_msg(struct pci_dev *pdev, int hwirq,
struct msi_msg *msg)
{
struct fsl_msi *msi_data = fsl_msi;
+ struct pci_controller *hose = pci_bus_to_host(pdev->bus);
+ u32 base = 0;
- msg->address_lo = msi_data->msi_addr_lo;
+ pci_bus_read_config_dword(hose->bus,
+ PCI_DEVFN(0, 0), PCI_BASE_ADDRESS_0, &base);
+
+ msg->address_lo = msi_data->msi_addr_lo + base;
msg->address_hi = msi_data->msi_addr_hi;
msg->data = hwirq;
@@ -271,7 +276,7 @@ static int __devinit fsl_of_msi_probe(struct of_device *dev,
msi->irqhost->host_data = msi;
msi->msi_addr_hi = 0x0;
- msi->msi_addr_lo = res.start + features->msiir_offset;
+ msi->msi_addr_lo = features->msiir_offset + (res.start & 0xfffff);
rc = fsl_msi_init_allocator(msi);
if (rc) {
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