bt_pci.c revision 331722
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 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: stable/11/sys/dev/buslogic/bt_pci.c 331722 2018-03-29 02:50:57Z eadler $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/module.h> 37#include <sys/lock.h> 38#include <sys/mutex.h> 39#include <sys/bus.h> 40 41#include <dev/pci/pcireg.h> 42#include <dev/pci/pcivar.h> 43 44#include <machine/bus.h> 45#include <machine/resource.h> 46#include <sys/rman.h> 47 48#include <dev/buslogic/btreg.h> 49 50#define BT_PCI_IOADDR PCIR_BAR(0) 51#define BT_PCI_MEMADDR PCIR_BAR(1) 52 53#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 54#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 55#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 56 57static int 58bt_pci_alloc_resources(device_t dev) 59{ 60 int type = 0, rid, zero; 61 struct resource *regs = NULL; 62 struct resource *irq = NULL; 63 64#if 0 65 /* XXX Memory Mapped I/O seems to cause problems */ 66 type = SYS_RES_MEMORY; 67 rid = BT_PCI_MEMADDR; 68 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 69#else 70 type = SYS_RES_IOPORT; 71 rid = BT_PCI_IOADDR; 72 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 73#endif 74 if (!regs) 75 return (ENOMEM); 76 77 zero = 0; 78 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 79 RF_ACTIVE | RF_SHAREABLE); 80 if (!irq) { 81 bus_release_resource(dev, type, rid, regs); 82 return (ENOMEM); 83 } 84 85 bt_init_softc(dev, regs, irq, 0); 86 87 return (0); 88} 89 90static void 91bt_pci_release_resources(device_t dev) 92{ 93 struct bt_softc *bt = device_get_softc(dev); 94 95 if (bt->port) 96 /* XXX can't cope with memory registers anyway */ 97 bus_release_resource(dev, SYS_RES_IOPORT, 98 BT_PCI_IOADDR, bt->port); 99 if (bt->irq) 100 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 101 bt_free_softc(dev); 102} 103 104static int 105bt_pci_probe(device_t dev) 106{ 107 switch (pci_get_devid(dev)) { 108 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 109 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 110 { 111 struct bt_softc *bt = device_get_softc(dev); 112 pci_info_data_t pci_info; 113 int error; 114 115 error = bt_pci_alloc_resources(dev); 116 if (error) 117 return (error); 118 119 /* 120 * Determine if an ISA compatible I/O port has been 121 * enabled. If so, record the port so it will not 122 * be probed by our ISA probe. If the PCI I/O port 123 * was not set to the compatibility port, disable it. 124 */ 125 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, 126 /*param*/NULL, /*paramlen*/0, 127 (u_int8_t*)&pci_info, sizeof(pci_info), 128 DEFAULT_CMD_TIMEOUT); 129 if (error == 0 130 && pci_info.io_port < BIO_DISABLED) { 131 bt_mark_probed_bio(pci_info.io_port); 132 if (rman_get_start(bt->port) != 133 bt_iop_from_bio(pci_info.io_port)) { 134 u_int8_t new_addr; 135 136 new_addr = BIO_DISABLED; 137 bt_cmd(bt, BOP_MODIFY_IO_ADDR, 138 /*param*/&new_addr, 139 /*paramlen*/1, /*reply_buf*/NULL, 140 /*reply_len*/0, 141 DEFAULT_CMD_TIMEOUT); 142 } 143 } 144 bt_pci_release_resources(dev); 145 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 146 return (BUS_PROBE_DEFAULT); 147 } 148 default: 149 break; 150 } 151 152 return (ENXIO); 153} 154 155static int 156bt_pci_attach(device_t dev) 157{ 158 struct bt_softc *bt = device_get_softc(dev); 159 int error; 160 161 /* Initialize softc */ 162 error = bt_pci_alloc_resources(dev); 163 if (error) { 164 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 165 return error; 166 } 167 168 /* Allocate a dmatag for our CCB DMA maps */ 169 if (bus_dma_tag_create( /* PCI parent */ bus_get_dma_tag(dev), 170 /* alignemnt */ 1, 171 /* boundary */ 0, 172 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 173 /* highaddr */ BUS_SPACE_MAXADDR, 174 /* filter */ NULL, 175 /* filterarg */ NULL, 176 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 177 /* nsegments */ ~0, 178 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 179 /* flags */ 0, 180 /* lockfunc */ NULL, 181 /* lockarg */ NULL, 182 &bt->parent_dmat) != 0) { 183 bt_pci_release_resources(dev); 184 return (ENOMEM); 185 } 186 187 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 188 bt_pci_release_resources(dev); 189 return (ENXIO); 190 } 191 192 error = bt_attach(dev); 193 194 if (error) { 195 bt_pci_release_resources(dev); 196 return (error); 197 } 198 199 return (0); 200} 201 202static device_method_t bt_pci_methods[] = { 203 /* Device interface */ 204 DEVMETHOD(device_probe, bt_pci_probe), 205 DEVMETHOD(device_attach, bt_pci_attach), 206 207 { 0, 0 } 208}; 209 210static driver_t bt_pci_driver = { 211 "bt", 212 bt_pci_methods, 213 sizeof(struct bt_softc), 214}; 215 216static devclass_t bt_devclass; 217 218DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); 219MODULE_DEPEND(bt, pci, 1, 1, 1); 220