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 1.11 2000/01/17 12:38:00 nyan Exp $ 30 * $DragonFly: src/sys/dev/disk/buslogic/bt_pci.c,v 1.5 2006/10/25 20:55:53 dillon Exp $ 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.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_MAPS 46 #define BT_PCI_MEMADDR PCIR_MAPS + 4 47 48 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 49 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 50 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 51 52 static int 53 bt_pci_alloc_resources(device_t dev) 54 { 55 int command, type = 0, rid, zero; 56 struct resource *regs = 0; 57 struct resource *irq = 0; 58 59 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 60 #if 0 61 /* XXX Memory Mapped I/O seems to cause problems */ 62 if (command & PCIM_CMD_MEMEN) { 63 type = SYS_RES_MEMORY; 64 rid = BT_PCI_MEMADDR; 65 regs = bus_alloc_resource(dev, type, &rid, 66 0, ~0, 1, RF_ACTIVE); 67 } 68 #else 69 if (!regs && (command & PCIM_CMD_PORTEN)) { 70 type = SYS_RES_IOPORT; 71 rid = BT_PCI_IOADDR; 72 regs = bus_alloc_resource(dev, type, &rid, 73 0, ~0, 1, RF_ACTIVE); 74 } 75 #endif 76 if (!regs) 77 return (ENOMEM); 78 79 zero = 0; 80 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 81 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 82 if (!irq) { 83 bus_release_resource(dev, type, rid, regs); 84 return (ENOMEM); 85 } 86 87 bt_init_softc(dev, regs, irq, 0); 88 89 return (0); 90 } 91 92 static void 93 bt_pci_release_resources(device_t dev) 94 { 95 struct bt_softc *bt = device_get_softc(dev); 96 97 if (bt->port) 98 /* XXX can't cope with memory registers anyway */ 99 bus_release_resource(dev, SYS_RES_IOPORT, 100 BT_PCI_IOADDR, bt->port); 101 if (bt->irq) 102 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 103 bt_free_softc(dev); 104 } 105 106 static int 107 bt_pci_probe(device_t dev) 108 { 109 switch (pci_get_devid(dev)) { 110 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 111 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 112 { 113 struct bt_softc *bt = device_get_softc(dev); 114 pci_info_data_t pci_info; 115 int error; 116 117 error = bt_pci_alloc_resources(dev); 118 if (error) 119 return (error); 120 121 /* 122 * Determine if an ISA compatible I/O port has been 123 * enabled. If so, record the port so it will not 124 * be probed by our ISA probe. If the PCI I/O port 125 * was not set to the compatibility port, disable it. 126 */ 127 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, 128 /*param*/NULL, /*paramlen*/0, 129 (u_int8_t*)&pci_info, sizeof(pci_info), 130 DEFAULT_CMD_TIMEOUT); 131 if (error == 0 132 && pci_info.io_port < BIO_DISABLED) { 133 bt_mark_probed_bio(pci_info.io_port); 134 if (rman_get_start(bt->port) != 135 bt_iop_from_bio(pci_info.io_port)) { 136 u_int8_t new_addr; 137 138 new_addr = BIO_DISABLED; 139 bt_cmd(bt, BOP_MODIFY_IO_ADDR, 140 /*param*/&new_addr, 141 /*paramlen*/1, /*reply_buf*/NULL, 142 /*reply_len*/0, 143 DEFAULT_CMD_TIMEOUT); 144 } 145 } 146 bt_pci_release_resources(dev); 147 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 148 return (0); 149 } 150 default: 151 break; 152 } 153 154 return (ENXIO); 155 } 156 157 static int 158 bt_pci_attach(device_t dev) 159 { 160 struct bt_softc *bt = device_get_softc(dev); 161 int error; 162 163 /* Initialize softc */ 164 error = bt_pci_alloc_resources(dev); 165 if (error) { 166 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 167 return error; 168 } 169 170 /* Allocate a dmatag for our CCB DMA maps */ 171 /* XXX Should be a child of the PCI bus dma tag */ 172 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0, 173 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 174 /*highaddr*/BUS_SPACE_MAXADDR, 175 /*filter*/NULL, /*filterarg*/NULL, 176 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 177 /*nsegments*/BUS_SPACE_UNRESTRICTED, 178 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 179 /*flags*/0, &bt->parent_dmat) != 0) { 180 bt_pci_release_resources(dev); 181 return (ENOMEM); 182 } 183 184 /* 185 * Protect ourself from spurrious interrupts during 186 * intialization and attach. We should really rely 187 * on interrupts during attach, but we don't have 188 * access to our interrupts during ISA probes, so until 189 * that changes, we mask our interrupts during attach 190 * too. 191 */ 192 crit_enter(); 193 194 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 195 bt_pci_release_resources(dev); 196 crit_exit(); 197 return (ENXIO); 198 } 199 200 error = bt_attach(dev); 201 crit_exit(); 202 203 if (error) { 204 bt_pci_release_resources(dev); 205 return (error); 206 } 207 208 return (0); 209 } 210 211 static device_method_t bt_pci_methods[] = { 212 /* Device interface */ 213 DEVMETHOD(device_probe, bt_pci_probe), 214 DEVMETHOD(device_attach, bt_pci_attach), 215 216 { 0, 0 } 217 }; 218 219 static driver_t bt_pci_driver = { 220 "bt", 221 bt_pci_methods, 222 sizeof(struct bt_softc), 223 }; 224 225 static devclass_t bt_devclass; 226 227 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); 228