diff options
Diffstat (limited to 'sys/mips/rmi/xlr_pci.c')
| -rw-r--r-- | sys/mips/rmi/xlr_pci.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/sys/mips/rmi/xlr_pci.c b/sys/mips/rmi/xlr_pci.c index b324aec..3204691 100644 --- a/sys/mips/rmi/xlr_pci.c +++ b/sys/mips/rmi/xlr_pci.c @@ -113,7 +113,7 @@ __FBSDID("$FreeBSD$"); #endif struct xlr_pcib_softc { - int junk; /* no softc */ + bus_dma_tag_t sc_pci_dmat; /* PCI DMA tag pointer */ }; static devclass_t pcib_devclass; @@ -300,7 +300,19 @@ xlr_pcib_write_config(device_t dev, u_int b, u_int s, u_int f, static int xlr_pcib_attach(device_t dev) { - + struct xlr_pcib_softc *sc; + sc = device_get_softc(dev); + + /* + * XLR C revision chips cannot do DMA above 2G physical address + * create a parent tag with this lowaddr + */ + if (xlr_is_c_revision()) { + if (bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, + 0x7fffffff, ~0, NULL, NULL, 0x7fffffff, + 0xff, 0x7fffffff, 0, NULL, NULL, &sc->sc_pci_dmat) != 0) + panic("%s: bus_dma_tag_create failed", __func__); + } device_add_child(dev, "pci", 0); bus_generic_attach(dev); return (0); @@ -566,6 +578,15 @@ xlr_pci_release_resource(device_t bus, device_t child, int type, int rid, return (rman_release_resource(r)); } +static bus_dma_tag_t +xlr_pci_get_dma_tag(device_t bus, device_t child) +{ + struct xlr_pcib_softc *sc; + + sc = device_get_softc(bus); + return (sc->sc_pci_dmat); +} + static int xlr_pci_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) @@ -618,6 +639,7 @@ static device_method_t xlr_pcib_methods[] = { DEVMETHOD(bus_write_ivar, xlr_pcib_write_ivar), DEVMETHOD(bus_alloc_resource, xlr_pci_alloc_resource), DEVMETHOD(bus_release_resource, xlr_pci_release_resource), + DEVMETHOD(bus_get_dma_tag, xlr_pci_get_dma_tag), DEVMETHOD(bus_activate_resource, xlr_pci_activate_resource), DEVMETHOD(bus_deactivate_resource, xlr_pci_deactivate_resource), DEVMETHOD(bus_setup_intr, mips_platform_pci_setup_intr), |
