bt_pci.c revision 165102
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: head/sys/dev/buslogic/bt_pci.c 165102 2006-12-11 18:28:31Z mjacob $"); 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 command, type = 0, rid, zero; 61 struct resource *regs = 0; 62 struct resource *irq = 0; 63 64 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 65#if 0 66 /* XXX Memory Mapped I/O seems to cause problems */ 67 if (command & PCIM_CMD_MEMEN) { 68 type = SYS_RES_MEMORY; 69 rid = BT_PCI_MEMADDR; 70 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 71 } 72#else 73 if (!regs && (command & PCIM_CMD_PORTEN)) { 74 type = SYS_RES_IOPORT; 75 rid = BT_PCI_IOADDR; 76 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE); 77 } 78#endif 79 if (!regs) 80 return (ENOMEM); 81 82 zero = 0; 83 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 84 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 (rman_get_start(bt->port) != 138 bt_iop_from_bio(pci_info.io_port)) { 139 u_int8_t new_addr; 140 141 new_addr = BIO_DISABLED; 142 bt_cmd(bt, BOP_MODIFY_IO_ADDR, 143 /*param*/&new_addr, 144 /*paramlen*/1, /*reply_buf*/NULL, 145 /*reply_len*/0, 146 DEFAULT_CMD_TIMEOUT); 147 } 148 } 149 bt_pci_release_resources(dev); 150 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 151 return (0); 152 } 153 default: 154 break; 155 } 156 157 return (ENXIO); 158} 159 160static int 161bt_pci_attach(device_t dev) 162{ 163 struct bt_softc *bt = device_get_softc(dev); 164 int opri; 165 int error; 166 167 /* Initialize softc */ 168 error = bt_pci_alloc_resources(dev); 169 if (error) { 170 device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 171 return error; 172 } 173 174 /* Allocate a dmatag for our CCB DMA maps */ 175 /* XXX Should be a child of the PCI bus dma tag */ 176 if (bus_dma_tag_create( /* parent */ NULL, 177 /* alignemnt */ 1, 178 /* boundary */ 0, 179 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 180 /* highaddr */ BUS_SPACE_MAXADDR, 181 /* filter */ NULL, 182 /* filterarg */ NULL, 183 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 184 /* nsegments */ ~0, 185 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 186 /* flags */ 0, 187 /* lockfunc */ busdma_lock_mutex, 188 /* lockarg */ &Giant, 189 &bt->parent_dmat) != 0) { 190 bt_pci_release_resources(dev); 191 return (ENOMEM); 192 } 193 194 /* 195 * Protect ourself from spurrious interrupts during 196 * intialization and attach. We should really rely 197 * on interrupts during attach, but we don't have 198 * access to our interrupts during ISA probes, so until 199 * that changes, we mask our interrupts during attach 200 * too. 201 */ 202 opri = splcam(); 203 204 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 205 bt_pci_release_resources(dev); 206 splx(opri); 207 return (ENXIO); 208 } 209 210 error = bt_attach(dev); 211 splx(opri); 212 213 if (error) { 214 bt_pci_release_resources(dev); 215 return (error); 216 } 217 218 return (0); 219} 220 221static device_method_t bt_pci_methods[] = { 222 /* Device interface */ 223 DEVMETHOD(device_probe, bt_pci_probe), 224 DEVMETHOD(device_attach, bt_pci_attach), 225 226 { 0, 0 } 227}; 228 229static driver_t bt_pci_driver = { 230 "bt", 231 bt_pci_methods, 232 sizeof(struct bt_softc), 233}; 234 235static devclass_t bt_devclass; 236 237DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); 238MODULE_DEPEND(bt, pci, 1, 1, 1); 239