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 39 #include <bus/pci/pcireg.h> 40 #include <bus/pci/pcivar.h> 41 42 #include "btreg.h" 43 44 #define BT_PCI_IOADDR PCIR_BAR(0) 45 #define BT_PCI_MEMADDR PCIR_BAR(1) 46 47 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 49 50 static int 51 bt_pci_alloc_resources(device_t dev) 52 { 53 int command, type = 0, rid, zero; 54 struct resource *regs = NULL; 55 struct resource *irq = NULL; 56 57 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 58 #if 0 59 /* XXX Memory Mapped I/O seems to cause problems */ 60 if (command & PCIM_CMD_MEMEN) { 61 type = SYS_RES_MEMORY; 62 rid = BT_PCI_MEMADDR; 63 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 64 } 65 #else 66 if (!regs && (command & PCIM_CMD_PORTEN)) { 67 type = SYS_RES_IOPORT; 68 rid = BT_PCI_IOADDR; 69 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 70 } 71 #endif 72 if (!regs) 73 return (ENOMEM); 74 75 zero = 0; 76 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 77 RF_ACTIVE | RF_SHAREABLE); 78 if (!irq) { 79 bus_release_resource(dev, type, rid, regs); 80 return (ENOMEM); 81 } 82 83 bt_init_softc(dev, regs, irq, 0); 84 85 return (0); 86 } 87 88 static void 89 bt_pci_release_resources(device_t dev) 90 { 91 struct bt_softc *bt = device_get_softc(dev); 92 93 if (bt->port) 94 /* XXX can't cope with memory registers anyway */ 95 bus_release_resource(dev, SYS_RES_IOPORT, 96 BT_PCI_IOADDR, bt->port); 97 if (bt->irq) 98 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 99 bt_free_softc(dev); 100 } 101 102 static int 103 bt_pci_probe(device_t dev) 104 { 105 switch (pci_get_devid(dev)) { 106 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 107 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 108 device_set_desc(dev, 109 "Buslogic Multi-Master SCSI Host Adapter"); 110 break; 111 default: 112 return (ENXIO); 113 } 114 115 return (BUS_PROBE_DEFAULT); 116 } 117 118 static int 119 bt_pci_attach(device_t dev) 120 { 121 struct bt_softc *bt = device_get_softc(dev); 122 int error; 123 124 /* Initialize softc */ 125 error = bt_pci_alloc_resources(dev); 126 if (error) { 127 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 128 return error; 129 } 130 131 /* Allocate a dmatag for our CCB DMA maps */ 132 /* XXX Should be a child of the PCI bus dma tag */ 133 if (bus_dma_tag_create( /* parent */ NULL, 134 /* alignemnt */ 1, 135 /* boundary */ 0, 136 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 137 /* highaddr */ BUS_SPACE_MAXADDR, 138 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 139 /* nsegments */ ~0, 140 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 141 /* flags */ 0, 142 &bt->parent_dmat) != 0) { 143 bt_pci_release_resources(dev); 144 return (ENOMEM); 145 } 146 147 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 148 bt_pci_release_resources(dev); 149 return (ENXIO); 150 } 151 152 error = bt_attach(dev); 153 154 if (error) { 155 bt_pci_release_resources(dev); 156 return (error); 157 } 158 159 return (0); 160 } 161 162 static device_method_t bt_pci_methods[] = { 163 /* Device interface */ 164 DEVMETHOD(device_probe, bt_pci_probe), 165 DEVMETHOD(device_attach, bt_pci_attach), 166 167 DEVMETHOD_END 168 }; 169 170 static driver_t bt_pci_driver = { 171 "bt", 172 bt_pci_methods, 173 sizeof(struct bt_softc), 174 }; 175 176 static devclass_t bt_devclass; 177 178 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, NULL, NULL); 179 MODULE_DEPEND(bt, pci, 1, 1, 1); 180