bt_pci.c revision 330897
1/*- 2 * Product specific probe and attach routines for: 3 * Buslogic BT946, BT948, BT956, BT958 SCSI controllers 4 * 5 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 6 * 7 * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs 8 * All rights reserved. 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 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: stable/11/sys/dev/buslogic/bt_pci.c 330897 2018-03-14 03:19:51Z eadler $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/kernel.h> 38#include <sys/module.h> 39#include <sys/lock.h> 40#include <sys/mutex.h> 41#include <sys/bus.h> 42 43#include <dev/pci/pcireg.h> 44#include <dev/pci/pcivar.h> 45 46#include <machine/bus.h> 47#include <machine/resource.h> 48#include <sys/rman.h> 49 50#include <dev/buslogic/btreg.h> 51 52#define BT_PCI_IOADDR PCIR_BAR(0) 53#define BT_PCI_MEMADDR PCIR_BAR(1) 54 55#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 56#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 57#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 58 59static int 60bt_pci_alloc_resources(device_t dev) 61{ 62 int type = 0, rid, zero; 63 struct resource *regs = NULL; 64 struct resource *irq = NULL; 65 66#if 0 67 /* XXX Memory Mapped I/O seems to cause problems */ 68 type = SYS_RES_MEMORY; 69 rid = BT_PCI_MEMADDR; 70 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 71#else 72 type = SYS_RES_IOPORT; 73 rid = BT_PCI_IOADDR; 74 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 75#endif 76 if (!regs) 77 return (ENOMEM); 78 79 zero = 0; 80 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 81 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 92static void 93bt_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 106static int 107bt_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 (BUS_PROBE_DEFAULT); 149 } 150 default: 151 break; 152 } 153 154 return (ENXIO); 155} 156 157static int 158bt_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 if (bus_dma_tag_create( /* PCI parent */ bus_get_dma_tag(dev), 172 /* alignemnt */ 1, 173 /* boundary */ 0, 174 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 175 /* highaddr */ BUS_SPACE_MAXADDR, 176 /* filter */ NULL, 177 /* filterarg */ NULL, 178 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 179 /* nsegments */ ~0, 180 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 181 /* flags */ 0, 182 /* lockfunc */ NULL, 183 /* lockarg */ NULL, 184 &bt->parent_dmat) != 0) { 185 bt_pci_release_resources(dev); 186 return (ENOMEM); 187 } 188 189 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 190 bt_pci_release_resources(dev); 191 return (ENXIO); 192 } 193 194 error = bt_attach(dev); 195 196 if (error) { 197 bt_pci_release_resources(dev); 198 return (error); 199 } 200 201 return (0); 202} 203 204static device_method_t bt_pci_methods[] = { 205 /* Device interface */ 206 DEVMETHOD(device_probe, bt_pci_probe), 207 DEVMETHOD(device_attach, bt_pci_attach), 208 209 { 0, 0 } 210}; 211 212static driver_t bt_pci_driver = { 213 "bt", 214 bt_pci_methods, 215 sizeof(struct bt_softc), 216}; 217 218static devclass_t bt_devclass; 219 220DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); 221MODULE_DEPEND(bt, pci, 1, 1, 1); 222