| 1 | /* $NetBSD: if_mtd_pci.c,v 1.20 2016/07/07 06:55:41 msaitoh 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 1.20 2016/07/07 06:55:41 msaitoh 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 | |
| 60 | struct mtd_pci_device_id { |
| 61 | pci_vendor_id_t vendor; /* PCI vendor ID */ |
| 62 | pci_product_id_t product; /* PCI product ID */ |
| 63 | }; |
| 64 | |
| 65 | static struct mtd_pci_device_id mtd_ids[] = { |
| 66 | { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 }, |
| 67 | { 0, 0 } |
| 68 | }; |
| 69 | |
| 70 | static int mtd_pci_match(device_t, cfdata_t, void *); |
| 71 | static void mtd_pci_attach(device_t, device_t, void *); |
| 72 | |
| 73 | CFATTACH_DECL_NEW(mtd_pci, sizeof(struct mtd_softc), mtd_pci_match, |
| 74 | mtd_pci_attach, NULL, NULL); |
| 75 | |
| 76 | static int |
| 77 | mtd_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 | |
| 90 | static void |
| 91 | mtd_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, |
| 119 | "could not map memory or i/o space\n" ); |
| 120 | return; |
| 121 | } |
| 122 | sc->dma_tag = pa->pa_dmat; |
| 123 | |
| 124 | /* Do generic attach. Seems this must be done before setting IRQ */ |
| 125 | mtd_config(sc); |
| 126 | |
| 127 | if (pci_intr_map(pa, &ih)) { |
| 128 | aprint_error_dev(sc->dev, "could not map interrupt\n" ); |
| 129 | return; |
| 130 | } |
| 131 | intrstring = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf)); |
| 132 | |
| 133 | if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) { |
| 134 | aprint_error_dev(sc->dev, "could not establish interrupt" ); |
| 135 | if (intrstring != NULL) |
| 136 | aprint_error(" at %s" , intrstring); |
| 137 | aprint_error("\n" ); |
| 138 | return; |
| 139 | } else { |
| 140 | aprint_normal_dev(sc->dev, "using %s for interrupt\n" , |
| 141 | intrstring ? intrstring : "unknown interrupt" ); |
| 142 | } |
| 143 | } |
| 144 | |