if_nf10bmac_fdt.c revision 267920
1251875Speter/*- 2251875Speter * Copyright (c) 2013-2014 Bjoern A. Zeeb 3251875Speter * All rights reserved. 4251875Speter * 5251875Speter * This software was developed by SRI International and the University of 6251875Speter * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249 7251875Speter * ("MRC2"), as part of the DARPA MRC research programme. 8251875Speter * 9251875Speter * Redistribution and use in source and binary forms, with or without 10251875Speter * modification, are permitted provided that the following conditions 11251875Speter * are met: 12251875Speter * 1. Redistributions of source code must retain the above copyright 13251875Speter * notice, this list of conditions and the following disclaimer. 14251875Speter * 2. Redistributions in binary form must reproduce the above copyright 15251875Speter * notice, this list of conditions and the following disclaimer in the 16251875Speter * documentation and/or other materials provided with the distribution. 17251875Speter * 18251875Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19251875Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20251875Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21251875Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22251875Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23251875Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24251875Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25251875Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26251875Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27251875Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28251875Speter * SUCH DAMAGE. 29251875Speter * 30251875Speter * This driver is modelled after atse(4). We need to seriously reduce the 31251875Speter * per-driver code we have to write^wcopy & paste. 32251875Speter */ 33251875Speter 34251875Speter#include <sys/cdefs.h> 35251875Speter__FBSDID("$FreeBSD: head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c 267920 2014-06-26 17:10:07Z bz $"); 36251875Speter 37251875Speter#include <sys/param.h> 38251875Speter#include <sys/bus.h> 39251875Speter#include <sys/kernel.h> 40251875Speter#include <sys/module.h> 41251875Speter#include <sys/rman.h> 42251875Speter#include <sys/socket.h> 43251875Speter#include <sys/systm.h> 44251875Speter 45251875Speter#include <machine/bus.h> 46251875Speter#include <machine/resource.h> 47251875Speter 48251875Speter#include <net/ethernet.h> 49251875Speter#include <net/if.h> 50251875Speter#include <net/if_media.h> 51251875Speter#include <net/if_var.h> 52251875Speter 53251875Speter#include <dev/fdt/fdt_common.h> 54251875Speter#include <dev/ofw/openfirm.h> 55251875Speter#include <dev/ofw/ofw_bus.h> 56251875Speter#include <dev/ofw/ofw_bus_subr.h> 57251875Speter 58251875Speter#include "if_nf10bmacreg.h" 59251875Speter 60251875Speterstatic int 61251875Speternf10bmac_probe_fdt(device_t dev) 62251875Speter{ 63251875Speter 64251875Speter if (!ofw_bus_status_okay(dev)) 65251875Speter return (ENXIO); 66251875Speter 67251875Speter if (ofw_bus_is_compatible(dev, "netfpag10g,nf10bmac")) { 68251875Speter device_set_desc(dev, "NetFPGA-10G Embedded CPU Ethernet Core"); 69251875Speter return (BUS_PROBE_DEFAULT); 70251875Speter } 71251875Speter 72251875Speter return (ENXIO); 73251875Speter} 74251875Speter 75251875Speterstatic int 76251875Speternf10bmac_attach_fdt(device_t dev) 77251875Speter{ 78251875Speter struct nf10bmac_softc *sc; 79251875Speter int error; 80251875Speter 81251875Speter sc = device_get_softc(dev); 82251875Speter sc->nf10bmac_dev = dev; 83251875Speter sc->nf10bmac_unit = device_get_unit(dev); 84251875Speter 85251875Speter /* 86251875Speter * FDT lists our resources. For convenience we use three different 87251875Speter * mappings. We need to attach them in the oder specified in .dts: 88251875Speter * LOOP (size 0x1f), TX (0x2f), RX (0x2f), INTR (0xf). 89251875Speter */ 90251875Speter 91251875Speter /* 92251875Speter * LOOP memory region (this could be a general control region). 93251875Speter * 0x00: 32/64bit register to enable a Y-"lopback". 94251875Speter */ 95251875Speter sc->nf10bmac_ctrl_rid = 0; 96251875Speter sc->nf10bmac_ctrl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 97251875Speter &sc->nf10bmac_ctrl_rid, RF_ACTIVE); 98251875Speter if (sc->nf10bmac_ctrl_res == NULL) { 99251875Speter device_printf(dev, "failed to map memory for CTRL region\n"); 100251875Speter error = ENXIO; 101251875Speter goto err; 102251875Speter } 103251875Speter if (bootverbose) 104251875Speter device_printf(sc->nf10bmac_dev, "CTRL region at mem %p-%p\n", 105251875Speter (void *)rman_get_start(sc->nf10bmac_ctrl_res), 106251875Speter (void *)(rman_get_start(sc->nf10bmac_ctrl_res) + 107251875Speter rman_get_size(sc->nf10bmac_ctrl_res))); 108251875Speter 109251875Speter /* 110251875Speter * TX and TX metadata FIFO memory region. 111251875Speter * 0x00: 32/64bit FIFO data, 112251875Speter * 0x08: 32/64bit FIFO metadata, 113251875Speter * 0x10: 32/64bit packet length. 114251875Speter */ 115251875Speter sc->nf10bmac_tx_mem_rid = 1; 116251875Speter sc->nf10bmac_tx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 117251875Speter &sc->nf10bmac_tx_mem_rid, RF_ACTIVE); 118251875Speter if (sc->nf10bmac_tx_mem_res == NULL) { 119251875Speter device_printf(dev, "failed to map memory for TX FIFO\n"); 120251875Speter error = ENXIO; 121251875Speter goto err; 122251875Speter } 123251875Speter if (bootverbose) 124251875Speter device_printf(sc->nf10bmac_dev, "TX FIFO at mem %p-%p\n", 125251875Speter (void *)rman_get_start(sc->nf10bmac_tx_mem_res), 126251875Speter (void *)(rman_get_start(sc->nf10bmac_tx_mem_res) + 127251875Speter rman_get_size(sc->nf10bmac_tx_mem_res))); 128251875Speter 129251875Speter /* 130251875Speter * RX and RXC metadata FIFO memory region. 131251875Speter * 0x00: 32/64bit FIFO data, 132251875Speter * 0x08: 32/64bit FIFO metadata, 133251875Speter * 0x10: 32/64bit packet length. 134251875Speter */ 135251875Speter sc->nf10bmac_rx_mem_rid = 2; 136251875Speter sc->nf10bmac_rx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 137251875Speter &sc->nf10bmac_rx_mem_rid, RF_ACTIVE); 138251875Speter if (sc->nf10bmac_rx_mem_res == NULL) { 139251875Speter device_printf(dev, "failed to map memory for RX FIFO\n"); 140251875Speter error = ENXIO; 141251875Speter goto err; 142251875Speter } 143251875Speter if (bootverbose) 144251875Speter device_printf(sc->nf10bmac_dev, "RX FIFO at mem %p-%p\n", 145251875Speter (void *)rman_get_start(sc->nf10bmac_rx_mem_res), 146251875Speter (void *)(rman_get_start(sc->nf10bmac_rx_mem_res) + 147251875Speter rman_get_size(sc->nf10bmac_rx_mem_res))); 148251875Speter 149251875Speter /* 150251875Speter * Interrupt handling registers. 151251875Speter * 0x00: 32/64bit register to clear (and disable) the RX interrupt. 152251875Speter * 0x08: 32/64bit register to enable or disable the RX interrupt. 153251875Speter */ 154251875Speter sc->nf10bmac_intr_rid = 3; 155251875Speter sc->nf10bmac_intr_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 156251875Speter &sc->nf10bmac_intr_rid, RF_ACTIVE); 157251875Speter if (sc->nf10bmac_intr_res == NULL) { 158251875Speter device_printf(dev, "failed to map memory for INTR region\n"); 159251875Speter error = ENXIO; 160251875Speter goto err; 161251875Speter } 162251875Speter if (bootverbose) 163251875Speter device_printf(sc->nf10bmac_dev, "INTR region at mem %p-%p\n", 164251875Speter (void *)rman_get_start(sc->nf10bmac_intr_res), 165251875Speter (void *)(rman_get_start(sc->nf10bmac_intr_res) + 166251875Speter rman_get_size(sc->nf10bmac_intr_res))); 167251875Speter 168251875Speter /* (Optional) RX and TX IRQ. */ 169251875Speter sc->nf10bmac_rx_irq_rid = 0; 170251875Speter sc->nf10bmac_rx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 171251875Speter &sc->nf10bmac_rx_irq_rid, RF_ACTIVE | RF_SHAREABLE); 172251875Speter 173251875Speter error = nf10bmac_attach(dev); 174251875Speter if (error) 175251875Speter goto err; 176251875Speter 177251875Speter return (0); 178251875Speter 179251875Spetererr: 180251875Speter /* Cleanup. */ 181251875Speter nf10bmac_detach_resources(dev); 182251875Speter 183251875Speter return (error); 184251875Speter} 185251875Speter 186251875Speterstatic device_method_t nf10bmac_methods_fdt[] = { 187251875Speter /* Device interface */ 188251875Speter DEVMETHOD(device_probe, nf10bmac_probe_fdt), 189251875Speter DEVMETHOD(device_attach, nf10bmac_attach_fdt), 190251875Speter DEVMETHOD(device_detach, nf10bmac_detach_dev), 191251875Speter 192251875Speter DEVMETHOD_END 193251875Speter}; 194251875Speter 195251875Speterstatic driver_t nf10bmac_driver_fdt = { 196251875Speter "nf10bmac", 197251875Speter nf10bmac_methods_fdt, 198251875Speter sizeof(struct nf10bmac_softc) 199251875Speter}; 200251875Speter 201251875SpeterDRIVER_MODULE(nf10bmac, simplebus, nf10bmac_driver_fdt, nf10bmac_devclass, 0,0); 202251875Speter 203251875Speter/* end */ 204251875Speter