diff options
| author | Zhang Wei <wei.zhang@freescale.com> | 2007-06-26 18:22:40 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-06-29 01:58:30 -0500 |
| commit | 20243c72a8564ccd22437fd1bda16ca5bccd5701 (patch) | |
| tree | 21030a3febbc52db4c846c1b1be188a851fc6233 | |
| parent | 6d8ff10c3ab1e3d4a40788442f1369e868103e43 (diff) | |
[POWERPC] 86xx: Created quirk_fsl_pcie_transparent() to initialize bridge resources.
The Freescale PCI-e RC poses as a transparent bridge, but does not
implement the IO_BASE or IO_LIMIT registers in the config space. This
means that the code which initializes the bridge resources ends up
setting the IO resources erroneously. Add quick_fsl_pcie_transparent()
to handle this.
This change sets RC of mpc8641 to be a transparent bridge
for legacy I/O access and initializes the RC bridge resources
from the device tree.
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/platforms/86xx/pci.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/86xx/pci.c b/arch/powerpc/platforms/86xx/pci.c index 6f3c0f674bb..2d7254c91ad 100644 --- a/arch/powerpc/platforms/86xx/pci.c +++ b/arch/powerpc/platforms/86xx/pci.c @@ -134,6 +134,43 @@ mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size) early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80); } +static void __devinit quirk_fsl_pcie_transparent(struct pci_dev *dev) +{ + struct resource *res; + int i, res_idx = PCI_BRIDGE_RESOURCES; + struct pci_controller *hose; + + /* + * Make the bridge be transparent. + */ + dev->transparent = 1; + + hose = pci_bus_to_hose(dev->bus->number); + if (!hose) { + printk(KERN_ERR "Can't find hose for bus %d\n", + dev->bus->number); + return; + } + + if (hose->io_resource.flags) { + res = &dev->resource[res_idx++]; + res->start = hose->io_resource.start; + res->end = hose->io_resource.end; + res->flags = hose->io_resource.flags; + } + + for (i = 0; i < 3; i++) { + res = &dev->resource[res_idx + i]; + res->start = hose->mem_resources[i].start; + res->end = hose->mem_resources[i].end; + res->flags = hose->mem_resources[i].flags; + } +} + + +DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent); +DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent); + #define PCIE_LTSSM 0x404 /* PCIe Link Training and Status */ #define PCIE_LTSSM_L0 0x16 /* L0 state */ |