diff options
Diffstat (limited to 'sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c')
| -rw-r--r-- | sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c b/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c new file mode 100644 index 0000000..ef903c6 --- /dev/null +++ b/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c @@ -0,0 +1,203 @@ +/*- + * Copyright (c) 2013-2014 Bjoern A. Zeeb + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249 + * ("MRC2"), as part of the DARPA MRC research programme. + * + * 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. + * + * This driver is modelled after atse(4). We need to seriously reduce the + * per-driver code we have to write^wcopy & paste. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/rman.h> +#include <sys/socket.h> +#include <sys/systm.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <net/ethernet.h> +#include <net/if.h> +#include <net/if_media.h> +#include <net/if_var.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include "if_nf10bmacreg.h" + +static int +nf10bmac_probe_fdt(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_is_compatible(dev, "netfpag10g,nf10bmac")) { + device_set_desc(dev, "NetFPGA-10G Embedded CPU Ethernet Core"); + return (BUS_PROBE_DEFAULT); + } + + return (ENXIO); +} + +static int +nf10bmac_attach_fdt(device_t dev) +{ + struct nf10bmac_softc *sc; + int error; + + sc = device_get_softc(dev); + sc->nf10bmac_dev = dev; + sc->nf10bmac_unit = device_get_unit(dev); + + /* + * FDT lists our resources. For convenience we use three different + * mappings. We need to attach them in the oder specified in .dts: + * LOOP (size 0x1f), TX (0x2f), RX (0x2f), INTR (0xf). + */ + + /* + * LOOP memory region (this could be a general control region). + * 0x00: 32/64bit register to enable a Y-"lopback". + */ + sc->nf10bmac_ctrl_rid = 0; + sc->nf10bmac_ctrl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->nf10bmac_ctrl_rid, RF_ACTIVE); + if (sc->nf10bmac_ctrl_res == NULL) { + device_printf(dev, "failed to map memory for CTRL region\n"); + error = ENXIO; + goto err; + } + if (bootverbose) + device_printf(sc->nf10bmac_dev, "CTRL region at mem %p-%p\n", + (void *)rman_get_start(sc->nf10bmac_ctrl_res), + (void *)(rman_get_start(sc->nf10bmac_ctrl_res) + + rman_get_size(sc->nf10bmac_ctrl_res))); + + /* + * TX and TX metadata FIFO memory region. + * 0x00: 32/64bit FIFO data, + * 0x08: 32/64bit FIFO metadata, + * 0x10: 32/64bit packet length. + */ + sc->nf10bmac_tx_mem_rid = 1; + sc->nf10bmac_tx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->nf10bmac_tx_mem_rid, RF_ACTIVE); + if (sc->nf10bmac_tx_mem_res == NULL) { + device_printf(dev, "failed to map memory for TX FIFO\n"); + error = ENXIO; + goto err; + } + if (bootverbose) + device_printf(sc->nf10bmac_dev, "TX FIFO at mem %p-%p\n", + (void *)rman_get_start(sc->nf10bmac_tx_mem_res), + (void *)(rman_get_start(sc->nf10bmac_tx_mem_res) + + rman_get_size(sc->nf10bmac_tx_mem_res))); + + /* + * RX and RXC metadata FIFO memory region. + * 0x00: 32/64bit FIFO data, + * 0x08: 32/64bit FIFO metadata, + * 0x10: 32/64bit packet length. + */ + sc->nf10bmac_rx_mem_rid = 2; + sc->nf10bmac_rx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->nf10bmac_rx_mem_rid, RF_ACTIVE); + if (sc->nf10bmac_rx_mem_res == NULL) { + device_printf(dev, "failed to map memory for RX FIFO\n"); + error = ENXIO; + goto err; + } + if (bootverbose) + device_printf(sc->nf10bmac_dev, "RX FIFO at mem %p-%p\n", + (void *)rman_get_start(sc->nf10bmac_rx_mem_res), + (void *)(rman_get_start(sc->nf10bmac_rx_mem_res) + + rman_get_size(sc->nf10bmac_rx_mem_res))); + + /* + * Interrupt handling registers. + * 0x00: 32/64bit register to clear (and disable) the RX interrupt. + * 0x08: 32/64bit register to enable or disable the RX interrupt. + */ + sc->nf10bmac_intr_rid = 3; + sc->nf10bmac_intr_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->nf10bmac_intr_rid, RF_ACTIVE); + if (sc->nf10bmac_intr_res == NULL) { + device_printf(dev, "failed to map memory for INTR region\n"); + error = ENXIO; + goto err; + } + if (bootverbose) + device_printf(sc->nf10bmac_dev, "INTR region at mem %p-%p\n", + (void *)rman_get_start(sc->nf10bmac_intr_res), + (void *)(rman_get_start(sc->nf10bmac_intr_res) + + rman_get_size(sc->nf10bmac_intr_res))); + + /* (Optional) RX and TX IRQ. */ + sc->nf10bmac_rx_irq_rid = 0; + sc->nf10bmac_rx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, + &sc->nf10bmac_rx_irq_rid, RF_ACTIVE | RF_SHAREABLE); + + error = nf10bmac_attach(dev); + if (error) + goto err; + + return (0); + +err: + /* Cleanup. */ + nf10bmac_detach_resources(dev); + + return (error); +} + +static device_method_t nf10bmac_methods_fdt[] = { + /* Device interface */ + DEVMETHOD(device_probe, nf10bmac_probe_fdt), + DEVMETHOD(device_attach, nf10bmac_attach_fdt), + DEVMETHOD(device_detach, nf10bmac_detach_dev), + + DEVMETHOD_END +}; + +static driver_t nf10bmac_driver_fdt = { + "nf10bmac", + nf10bmac_methods_fdt, + sizeof(struct nf10bmac_softc) +}; + +DRIVER_MODULE(nf10bmac, simplebus, nf10bmac_driver_fdt, nf10bmac_devclass, 0,0); + +/* end */ |
