if_mtd_pci.c revision 1.19
1/* $NetBSD: if_mtd_pci.c,v 1.19 2014/03/29 19:28:25 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Peter Bex <Peter.Bex@student.kun.nl>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * PCI interface for MTD803 cards 34 * Written by Peter Bex (peter.bex@student.kun.nl) 35 */ 36 37/* TODO: Check why in IO space, the MII won't work. Memory mapped works */ 38 39#include <sys/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: if_mtd_pci.c,v 1.19 2014/03/29 19:28:25 christos Exp $"); 41 42#include <sys/param.h> 43#include <sys/device.h> 44#include <sys/systm.h> 45#include <sys/socket.h> 46#include <net/if.h> 47#include <net/if_ether.h> 48#include <net/if_media.h> 49#include <sys/bus.h> 50#include <dev/mii/miivar.h> 51#include <dev/ic/mtd803reg.h> 52#include <dev/ic/mtd803var.h> 53#include <dev/pci/pcidevs.h> 54#include <dev/pci/pcireg.h> 55#include <dev/pci/pcivar.h> 56 57#define PCI_IO_MAP_REG PCI_BAR(0) 58#define PCI_MEM_MAP_REG PCI_BAR(1) 59 60struct mtd_pci_device_id { 61 pci_vendor_id_t vendor; /* PCI vendor ID */ 62 pci_product_id_t product; /* PCI product ID */ 63}; 64 65static struct mtd_pci_device_id mtd_ids[] = { 66 { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 }, 67 { 0, 0 } 68}; 69 70static int mtd_pci_match(device_t, cfdata_t, void *); 71static void mtd_pci_attach(device_t, device_t, void *); 72 73CFATTACH_DECL_NEW(mtd_pci, sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach, 74 NULL, NULL); 75 76static int 77mtd_pci_match(device_t parent, cfdata_t match, void *aux) 78{ 79 struct pci_attach_args *pa = aux; 80 struct mtd_pci_device_id *id; 81 82 for (id = mtd_ids; id->vendor != 0; ++id) { 83 if (PCI_VENDOR(pa->pa_id) == id->vendor && 84 PCI_PRODUCT(pa->pa_id) == id->product) 85 return (1); 86 } 87 return (0); 88} 89 90static void 91mtd_pci_attach(device_t parent, device_t self, void *aux) 92{ 93 struct pci_attach_args * const pa = aux; 94 struct mtd_softc * const sc = device_private(self); 95 pci_intr_handle_t ih; 96 const char *intrstring = NULL; 97 bus_space_tag_t iot, memt; 98 bus_space_handle_t ioh, memh; 99 int io_valid, mem_valid; 100 char intrbuf[PCI_INTRSTR_LEN]; 101 102 sc->dev = self; 103 pci_aprint_devinfo(pa, NULL); 104 105 io_valid = (pci_mapreg_map(pa, PCI_IO_MAP_REG, PCI_MAPREG_TYPE_IO, 106 0, &iot, &ioh, NULL, NULL) == 0); 107 mem_valid = (pci_mapreg_map(pa, PCI_MEM_MAP_REG, PCI_MAPREG_TYPE_MEM 108 | PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, 109 NULL, NULL) == 0); 110 111 if (mem_valid) { 112 sc->bus_tag = memt; 113 sc->bus_handle = memh; 114 } else if (io_valid) { 115 sc->bus_tag = iot; 116 sc->bus_handle = ioh; 117 } else { 118 aprint_error_dev(sc->dev, "could not map memory or i/o space\n"); 119 return; 120 } 121 sc->dma_tag = pa->pa_dmat; 122 123 /* Do generic attach. Seems this must be done before setting IRQ */ 124 mtd_config(sc); 125 126 if (pci_intr_map(pa, &ih)) { 127 aprint_error_dev(sc->dev, "could not map interrupt\n"); 128 return; 129 } 130 intrstring = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf)); 131 132 if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) { 133 aprint_error_dev(sc->dev, "could not establish interrupt"); 134 if (intrstring != NULL) 135 aprint_error(" at %s", intrstring); 136 aprint_error("\n"); 137 return; 138 } else { 139 aprint_normal_dev(sc->dev, "using %s for interrupt\n", 140 intrstring ? intrstring : "unknown interrupt"); 141 } 142} 143