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 *
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29 * $Id: bt_pci.c,v 1.7 1999/05/08 21:59:38 dfr Exp $
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29 * $Id: bt_pci.c,v 1.8 1999/07/03 20:17:01 peter Exp $ |
30 */ 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/kernel.h> 35#include <sys/bus.h> 36 37#include <pci/pcireg.h> 38#include <pci/pcivar.h> 39 40#include <machine/bus_memio.h> 41#include <machine/bus_pio.h> 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <dev/buslogic/btreg.h> 47 48#define BT_PCI_IOADDR PCIR_MAPS 49#define BT_PCI_MEMADDR PCIR_MAPS + 4 50 51#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 52#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 53#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 54 55static int 56bt_pci_alloc_resources(device_t dev) 57{ 58 int command, type = 0, rid, zero; 59 struct resource *regs = 0; 60 struct resource *irq = 0; 61 62 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 63#if 0 64 /* XXX Memory Mapped I/O seems to cause problems */ 65 if (command & PCIM_CMD_MEMEN) { 66 type = SYS_RES_MEMORY; 67 rid = BT_PCI_MEMADDR; 68 regs = bus_alloc_resource(dev, type, &rid, 69 0, ~0, 1, RF_ACTIVE); 70 } 71#else 72 if (!regs && (command & PCIM_CMD_PORTEN)) { 73 type = SYS_RES_IOPORT; 74 rid = BT_PCI_IOADDR; 75 regs = bus_alloc_resource(dev, type, &rid, 76 0, ~0, 1, RF_ACTIVE); 77 } 78#endif 79 if (!regs) 80 return (ENOMEM); 81 82 zero = 0; 83 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 84 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 85 if (!irq) { 86 bus_release_resource(dev, type, rid, regs); 87 return (ENOMEM); 88 } 89 90 bt_init_softc(dev, regs, irq, 0); 91 92 return (0); 93} 94 95static void 96bt_pci_release_resources(device_t dev) 97{ 98 struct bt_softc *bt = device_get_softc(dev); 99 100 if (bt->port) 101 /* XXX can't cope with memory registers anyway */ 102 bus_release_resource(dev, SYS_RES_IOPORT, 103 BT_PCI_IOADDR, bt->port); 104 if (bt->irq) 105 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 106 bt_free_softc(dev); 107} 108 109static int 110bt_pci_probe(device_t dev) 111{ 112 switch (pci_get_devid(dev)) { 113 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 114 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 115 { 116 struct bt_softc *bt = device_get_softc(dev); 117 pci_info_data_t pci_info; 118 int error; 119 120 error = bt_pci_alloc_resources(dev); 121 if (error) 122 return (error); 123 124 /* 125 * Determine if an ISA compatible I/O port has been 126 * enabled. If so, record the port so it will not 127 * be probed by our ISA probe. If the PCI I/O port 128 * was not set to the compatibility port, disable it. 129 */ 130 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, 131 /*param*/NULL, /*paramlen*/0, 132 (u_int8_t*)&pci_info, sizeof(pci_info), 133 DEFAULT_CMD_TIMEOUT); 134 if (error == 0 135 && pci_info.io_port < BIO_DISABLED) { 136 bt_mark_probed_bio(pci_info.io_port); 137 if (bt->bsh != bt_iop_from_bio(pci_info.io_port)) { 138 u_int8_t new_addr; 139 140 new_addr = BIO_DISABLED; 141 bt_cmd(bt, BOP_MODIFY_IO_ADDR, 142 /*param*/&new_addr, 143 /*paramlen*/1, /*reply_buf*/NULL, 144 /*reply_len*/0, 145 DEFAULT_CMD_TIMEOUT); 146 } 147 } 148 bt_pci_release_resources(dev); 149 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 150 return (0); 151 } 152 default: 153 break; 154 } 155 156 return (ENXIO); 157} 158 159static int 160bt_pci_attach(device_t dev) 161{ 162 struct bt_softc *bt = device_get_softc(dev); 163 int opri; 164 int error; 165 166 /* Initialize softc */ 167 error = bt_pci_alloc_resources(dev); 168 if (error) { 169 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 170 return error; 171 } 172 173 /* Allocate a dmatag for our CCB DMA maps */ 174 /* XXX Should be a child of the PCI bus dma tag */
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175 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0,
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175 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0, |
176 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 177 /*highaddr*/BUS_SPACE_MAXADDR, 178 /*filter*/NULL, /*filterarg*/NULL, 179 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 180 /*nsegments*/BUS_SPACE_UNRESTRICTED, 181 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 182 /*flags*/0, &bt->parent_dmat) != 0) { 183 bt_pci_release_resources(dev); 184 return (ENOMEM); 185 } 186 187 /* 188 * Protect ourself from spurrious interrupts during 189 * intialization and attach. We should really rely 190 * on interrupts during attach, but we don't have 191 * access to our interrupts during ISA probes, so until 192 * that changes, we mask our interrupts during attach 193 * too. 194 */ 195 opri = splcam(); 196 197 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 198 bt_pci_release_resources(dev); 199 splx(opri); 200 return (ENXIO); 201 } 202 203 error = bt_attach(dev); 204 splx(opri); 205 206 if (error) { 207 bt_pci_release_resources(dev); 208 return (error); 209 } 210 211 return (0); 212} 213 214static device_method_t bt_pci_methods[] = { 215 /* Device interface */ 216 DEVMETHOD(device_probe, bt_pci_probe), 217 DEVMETHOD(device_attach, bt_pci_attach), 218 219 { 0, 0 } 220}; 221 222static driver_t bt_pci_driver = { 223 "bt", 224 bt_pci_methods, 225 sizeof(struct bt_softc), 226}; 227 228static devclass_t bt_devclass; 229 230DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
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