1 /*- 2 * Product specific probe and attach routines for: 3 * Buslogic BT946, BT948, BT956, BT958 SCSI controllers 4 * 5 * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/buslogic/bt_pci.c,v 1.25 2012/11/17 01:51:40 svnexp Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/rman.h> 38 #include <sys/thread2.h> 39 40 #include <bus/pci/pcireg.h> 41 #include <bus/pci/pcivar.h> 42 43 #include "btreg.h" 44 45 #define BT_PCI_IOADDR PCIR_BAR(0) 46 #define BT_PCI_MEMADDR PCIR_BAR(1) 47 48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 49 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 50 51 static int 52 bt_pci_alloc_resources(device_t dev) 53 { 54 int command, type = 0, rid, zero; 55 struct resource *regs = NULL; 56 struct resource *irq = NULL; 57 58 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 59 #if 0 60 /* XXX Memory Mapped I/O seems to cause problems */ 61 if (command & PCIM_CMD_MEMEN) { 62 type = SYS_RES_MEMORY; 63 rid = BT_PCI_MEMADDR; 64 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 65 } 66 #else 67 if (!regs && (command & PCIM_CMD_PORTEN)) { 68 type = SYS_RES_IOPORT; 69 rid = BT_PCI_IOADDR; 70 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 71 } 72 #endif 73 if (!regs) 74 return (ENOMEM); 75 76 zero = 0; 77 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 78 RF_ACTIVE | RF_SHAREABLE); 79 if (!irq) { 80 bus_release_resource(dev, type, rid, regs); 81 return (ENOMEM); 82 } 83 84 bt_init_softc(dev, regs, irq, 0); 85 86 return (0); 87 } 88 89 static void 90 bt_pci_release_resources(device_t dev) 91 { 92 struct bt_softc *bt = device_get_softc(dev); 93 94 if (bt->port) 95 /* XXX can't cope with memory registers anyway */ 96 bus_release_resource(dev, SYS_RES_IOPORT, 97 BT_PCI_IOADDR, bt->port); 98 if (bt->irq) 99 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 100 bt_free_softc(dev); 101 } 102 103 static int 104 bt_pci_probe(device_t dev) 105 { 106 switch (pci_get_devid(dev)) { 107 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 108 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 109 device_set_desc(dev, 110 "Buslogic Multi-Master SCSI Host Adapter"); 111 break; 112 default: 113 return (ENXIO); 114 } 115 116 return (BUS_PROBE_DEFAULT); 117 } 118 119 static int 120 bt_pci_attach(device_t dev) 121 { 122 struct bt_softc *bt = device_get_softc(dev); 123 int error; 124 125 /* Initialize softc */ 126 error = bt_pci_alloc_resources(dev); 127 if (error) { 128 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 129 return error; 130 } 131 132 /* Allocate a dmatag for our CCB DMA maps */ 133 /* XXX Should be a child of the PCI bus dma tag */ 134 if (bus_dma_tag_create( /* parent */ NULL, 135 /* alignemnt */ 1, 136 /* boundary */ 0, 137 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 138 /* highaddr */ BUS_SPACE_MAXADDR, 139 /* filter */ NULL, 140 /* filterarg */ NULL, 141 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 142 /* nsegments */ ~0, 143 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 144 /* flags */ 0, 145 &bt->parent_dmat) != 0) { 146 bt_pci_release_resources(dev); 147 return (ENOMEM); 148 } 149 150 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 151 bt_pci_release_resources(dev); 152 return (ENXIO); 153 } 154 155 error = bt_attach(dev); 156 157 if (error) { 158 bt_pci_release_resources(dev); 159 return (error); 160 } 161 162 return (0); 163 } 164 165 static device_method_t bt_pci_methods[] = { 166 /* Device interface */ 167 DEVMETHOD(device_probe, bt_pci_probe), 168 DEVMETHOD(device_attach, bt_pci_attach), 169 170 DEVMETHOD_END 171 }; 172 173 static driver_t bt_pci_driver = { 174 "bt", 175 bt_pci_methods, 176 sizeof(struct bt_softc), 177 }; 178 179 static devclass_t bt_devclass; 180 181 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, NULL, NULL); 182 MODULE_DEPEND(bt, pci, 1, 1, 1); 183