diff options
Diffstat (limited to 'sys/arm64/cavium/thunder_pcie_pem_fdt.c')
| -rw-r--r-- | sys/arm64/cavium/thunder_pcie_pem_fdt.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/sys/arm64/cavium/thunder_pcie_pem_fdt.c b/sys/arm64/cavium/thunder_pcie_pem_fdt.c new file mode 100644 index 000000000000..a605b3c56efd --- /dev/null +++ b/sys/arm64/cavium/thunder_pcie_pem_fdt.c @@ -0,0 +1,201 @@ +/* + * Copyright (C) 2016 Cavium Inc. + * All rights reserved. + * + * Developed by Semihalf. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_platform.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/types.h> +#include <sys/sysctl.h> +#include <sys/kernel.h> +#include <sys/rman.h> +#include <sys/module.h> +#include <sys/bus.h> +#include <sys/endian.h> +#include <sys/cpuset.h> + +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> +#include <dev/pci/pcib_private.h> +#include <dev/pci/pci_host_generic.h> + +#include <machine/intr.h> + +#include "thunder_pcie_common.h" +#include "thunder_pcie_pem.h" + +#include "pcib_if.h" + +static int thunder_pem_fdt_probe(device_t); +static int thunder_pem_fdt_alloc_msix(device_t, device_t, int *); +static int thunder_pem_fdt_release_msix(device_t, device_t, int); +static int thunder_pem_fdt_alloc_msi(device_t, device_t, int, int, int *); +static int thunder_pem_fdt_release_msi(device_t, device_t, int, int *); +static int thunder_pem_fdt_map_msi(device_t, device_t, int, uint64_t *, + uint32_t *); +static int thunder_pem_fdt_get_id(device_t, device_t, enum pci_id_type, + uintptr_t *); + +static device_method_t thunder_pem_fdt_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, thunder_pem_fdt_probe), + + /* pcib interface */ + DEVMETHOD(pcib_alloc_msix, thunder_pem_fdt_alloc_msix), + DEVMETHOD(pcib_release_msix, thunder_pem_fdt_release_msix), + DEVMETHOD(pcib_alloc_msi, thunder_pem_fdt_alloc_msi), + DEVMETHOD(pcib_release_msi, thunder_pem_fdt_release_msi), + DEVMETHOD(pcib_map_msi, thunder_pem_fdt_map_msi), + DEVMETHOD(pcib_get_id, thunder_pem_fdt_get_id), + + /* End */ + DEVMETHOD_END +}; + +DEFINE_CLASS_1(pcib, thunder_pem_fdt_driver, thunder_pem_fdt_methods, + sizeof(struct thunder_pem_softc), thunder_pem_driver); + +static devclass_t thunder_pem_fdt_devclass; + +DRIVER_MODULE(thunder_pem, simplebus, thunder_pem_fdt_driver, + thunder_pem_fdt_devclass, 0, 0); +DRIVER_MODULE(thunder_pem, ofwbus, thunder_pem_fdt_driver, + thunder_pem_fdt_devclass, 0, 0); + +static int +thunder_pem_fdt_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_is_compatible(dev, "cavium,pci-host-thunder-pem")) { + device_set_desc(dev, THUNDER_PEM_DESC); + return (BUS_PROBE_DEFAULT); + } + + return (ENXIO); +} + +static int +thunder_pem_fdt_alloc_msi(device_t pci, device_t child, int count, int maxcount, + int *irqs) +{ + phandle_t msi_parent; + int err; + + err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), + &msi_parent, NULL); + if (err != 0) + return (err); + return (intr_alloc_msi(pci, child, msi_parent, count, maxcount, + irqs)); +} + +static int +thunder_pem_fdt_release_msi(device_t pci, device_t child, int count, int *irqs) +{ + phandle_t msi_parent; + int err; + + err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), + &msi_parent, NULL); + if (err != 0) + return (err); + return (intr_release_msi(pci, child, msi_parent, count, irqs)); +} + +static int +thunder_pem_fdt_alloc_msix(device_t pci, device_t child, int *irq) +{ + phandle_t msi_parent; + int err; + + err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), + &msi_parent, NULL); + if (err != 0) + return (err); + return (intr_alloc_msix(pci, child, msi_parent, irq)); +} + +static int +thunder_pem_fdt_release_msix(device_t pci, device_t child, int irq) +{ + phandle_t msi_parent; + int err; + + err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), + &msi_parent, NULL); + if (err != 0) + return (err); + return (intr_release_msix(pci, child, msi_parent, irq)); +} + +static int +thunder_pem_fdt_map_msi(device_t pci, device_t child, int irq, uint64_t *addr, + uint32_t *data) +{ + phandle_t msi_parent; + int err; + + err = ofw_bus_msimap(ofw_bus_get_node(pci), pci_get_rid(child), + &msi_parent, NULL); + if (err != 0) + return (err); + return (intr_map_msi(pci, child, msi_parent, irq, addr, data)); +} + +static int +thunder_pem_fdt_get_id(device_t dev, device_t child, enum pci_id_type type, + uintptr_t *id) +{ + phandle_t node; + int err; + uint32_t rid; + uint16_t pci_rid; + + if (type != PCI_ID_MSI) + return (pcib_get_id(dev, child, type, id)); + + node = ofw_bus_get_node(dev); + pci_rid = pci_get_rid(child); + + err = ofw_bus_msimap(node, pci_rid, NULL, &rid); + if (err != 0) + return (err); + *id = rid; + + return (0); +} |