bt_pci.c revision 45791
1492SN/A/* 22518Sihse * Product specific probe and attach routines for: 3492SN/A * Buslogic BT946, BT948, BT956, BT958 SCSI controllers 4492SN/A * 5492SN/A * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs 6492SN/A * All rights reserved. 7492SN/A * 8492SN/A * Redistribution and use in source and binary forms, with or without 9492SN/A * modification, are permitted provided that the following conditions 10492SN/A * are met: 11492SN/A * 1. Redistributions of source code must retain the above copyright 12492SN/A * notice, this list of conditions, and the following disclaimer, 13492SN/A * without modification, immediately at the beginning of the file. 14492SN/A * 2. The name of the author may not be used to endorse or promote products 15492SN/A * derived from this software without specific prior written permission. 16492SN/A * 17492SN/A * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18492SN/A * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19492SN/A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20492SN/A * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21492SN/A * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22492SN/A * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23492SN/A * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24492SN/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25492SN/A * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261120Schegar * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271120Schegar * SUCH DAMAGE. 281120Schegar * 291410Sihse * $Id: bt_pci.c,v 1.4 1998/12/14 06:32:54 dillon Exp $ 301120Schegar */ 311120Schegar 321120Schegar#include "pci.h" 33492SN/A#if NPCI > 0 341410Sihse#include <sys/param.h> 351410Sihse#include <sys/systm.h> 361410Sihse#include <sys/kernel.h> 371410Sihse#include <sys/bus.h> 38492SN/A 39492SN/A#include <pci/pcireg.h> 40492SN/A#include <pci/pcivar.h> 411410Sihse 421120Schegar#include <machine/bus_memio.h> 43837SN/A#include <machine/bus_pio.h> 44910Sihse#include <machine/bus.h> 451131Serikj#include <machine/resource.h> 462518Sihse#include <sys/rman.h> 47492SN/A 481120Schegar#include <dev/buslogic/btreg.h> 491236Sihse 501120Schegar#define BT_PCI_IOADDR PCIR_MAPS 511120Schegar#define BT_PCI_MEMADDR PCIR_MAPS + 4 521120Schegar 53968Sihse#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul 54968Sihse#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul 55492SN/A#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul 561120Schegar 571804Serikjstatic int 581120Schegarbt_pci_alloc_resources(device_t dev) 591120Schegar{ 601120Schegar int command, type = 0, rid, zero; 611120Schegar struct resource *regs = 0; 621120Schegar struct resource *irq = 0; 631120Schegar 641120Schegar command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 651120Schegar#if 0 661120Schegar /* XXX Memory Mapped I/O seems to cause problems */ 671120Schegar if (command & PCIM_CMD_MEMEN) { 681120Schegar type = SYS_RES_MEMORY; 692108Serikj rid = BT_PCI_MEMADDR; 702108Serikj regs = bus_alloc_resource(dev, type, &rid, 712108Serikj 0, ~0, 1, RF_ACTIVE); 722108Serikj } 731223Schegar#else 741223Schegar if (!regs && (command & PCIM_CMD_PORTEN)) { 752108Serikj type = SYS_RES_IOPORT; 761120Schegar rid = BT_PCI_IOADDR; 771120Schegar regs = bus_alloc_resource(dev, type, &rid, 782108Serikj 0, ~0, 1, RF_ACTIVE); 791120Schegar } 801120Schegar#endif 812108Serikj if (!regs) 821600Snaoto return (ENOMEM); 831600Snaoto 842108Serikj zero = 0; 851862Serikj irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 862261Serikj 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 872261Serikj if (!irq) { 882261Serikj bus_release_resource(dev, type, rid, regs); 892399Skvn return (ENOMEM); 902399Skvn } 912399Skvn 922108Serikj bt_init_softc(dev, regs, irq, 0); 931120Schegar 941659Serikj return (0); 952399Skvn} 962399Skvn 971120Schegarstatic void 981120Schegarbt_pci_release_resources(device_t dev) 991120Schegar{ 1001120Schegar struct bt_softc *bt = device_get_softc(dev); 1011120Schegar 1021120Schegar if (bt->port) 1031120Schegar /* XXX can't cope with memory registers anyway */ 1041735Sbobv bus_release_resource(dev, SYS_RES_IOPORT, 1051735Sbobv BT_PCI_IOADDR, bt->port); 1061735Sbobv if (bt->irq) 1072264Serikj bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->irq); 108492SN/A bt_free_softc(dev); 1091120Schegar} 1101120Schegar 1112108Serikjstatic int 1122108Serikjbt_pci_probe(device_t dev) 1132108Serikj{ 1142108Serikj switch (pci_get_devid(dev)) { 1152108Serikj case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: 1162108Serikj case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: 1172108Serikj { 1182108Serikj struct bt_softc *bt = device_get_softc(dev); 1192108Serikj pci_info_data_t pci_info; 1202108Serikj int error; 121492SN/A 1222108Serikj error = bt_pci_alloc_resources(dev); 1232108Serikj if (error) 1242108Serikj return (error); 1252108Serikj 126557SN/A /* 1272108Serikj * Determine if an ISA compatible I/O port has been 1282108Serikj * enabled. If so, record the port so it will not 1292108Serikj * be probed by our ISA probe. If the PCI I/O port 1301961Salanb * was not set to the compatibility port, disable it. 1312108Serikj */ 1322108Serikj error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, 1332108Serikj /*param*/NULL, /*paramlen*/0, 1341961Salanb (u_int8_t*)&pci_info, sizeof(pci_info), 1352108Serikj DEFAULT_CMD_TIMEOUT); 1362108Serikj if (error == 0 1371961Salanb && pci_info.io_port < BIO_DISABLED) { 1381961Salanb bt_mark_probed_bio(pci_info.io_port); 1391961Salanb if (bt->bsh != bt_iop_from_bio(pci_info.io_port)) { 1402108Serikj u_int8_t new_addr; 1412108Serikj 1421961Salanb new_addr = BIO_DISABLED; 1432108Serikj bt_cmd(bt, BOP_MODIFY_IO_ADDR, 1442108Serikj /*param*/&new_addr, 1451961Salanb /*paramlen*/1, /*reply_buf*/NULL, 1461120Schegar /*reply_len*/0, 1471120Schegar DEFAULT_CMD_TIMEOUT); 1481120Schegar } 1491120Schegar } 1501223Schegar bt_pci_release_resources(dev); 1511223Schegar device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); 1521223Schegar return (0); 1531223Schegar } 1541223Schegar default: 1551223Schegar break; 1561120Schegar } 1571120Schegar 1581120Schegar return (ENXIO); 1591120Schegar} 1601120Schegar 1611223Schegarstatic int 1621223Schegarbt_pci_attach(device_t dev) 1631223Schegar{ 1641223Schegar struct bt_softc *bt = device_get_softc(dev); 1651223Schegar int opri; 1661695Stwisti int error; 1671695Stwisti 1681120Schegar /* Initialise softc */ 1691961Salanb error = bt_pci_alloc_resources(dev); 1701961Salanb if (error) { 1711961Salanb device_printf(dev, "can't allocate resources in bt_pci_attach\n"); 1721961Salanb return error; 1731961Salanb } 1741961Salanb 1751961Salanb /* Allocate a dmatag for our CCB DMA maps */ 1761961Salanb /* XXX Should be a child of the PCI bus dma tag */ 1771961Salanb if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0, 1781961Salanb /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 1791961Salanb /*highaddr*/BUS_SPACE_MAXADDR, 1801961Salanb /*filter*/NULL, /*filterarg*/NULL, 1811961Salanb /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 1821961Salanb /*nsegments*/BUS_SPACE_UNRESTRICTED, 1831961Salanb /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 1841961Salanb /*flags*/0, &bt->parent_dmat) != 0) { 1851961Salanb bt_pci_release_resources(dev); 186607SN/A return (ENOMEM); 1871120Schegar } 1881120Schegar 1891961Salanb /* 1901120Schegar * Protect ourself from spurrious interrupts during 191492SN/A * intialization and attach. We should really rely 1921120Schegar * on interrupts during attach, but we don't have 1931120Schegar * access to our interrupts during ISA probes, so until 1941790Serikj * that changes, we mask our interrupts during attach 1951790Serikj * too. 1961120Schegar */ 1971120Schegar opri = splcam(); 1981120Schegar 1991120Schegar if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { 2001120Schegar bt_pci_release_resources(dev); 2011120Schegar splx(opri); 2021120Schegar return (ENXIO); 2031120Schegar } 2041790Serikj 2051790Serikj error = bt_attach(dev); 206492SN/A splx(opri); 2071120Schegar 2081120Schegar if (error) { 2091120Schegar bt_pci_release_resources(dev); 2101120Schegar return (error); 2111223Schegar } 2121223Schegar 2131223Schegar return (0); 2141223Schegar} 2151223Schegar 2161120Schegarstatic device_method_t bt_pci_methods[] = { 2171120Schegar /* Device interface */ 2181120Schegar DEVMETHOD(device_probe, bt_pci_probe), 2191120Schegar DEVMETHOD(device_attach, bt_pci_attach), 2201120Schegar 2211223Schegar { 0, 0 } 2221223Schegar}; 2231223Schegar 2241223Schegarstatic driver_t bt_pci_driver = { 2251223Schegar "bt", 2261223Schegar bt_pci_methods, 227492SN/A DRIVER_TYPE_CAM, 2281223Schegar sizeof(struct bt_softc), 229492SN/A}; 2301120Schegar 2311120Schegarstatic devclass_t bt_devclass; 2321223Schegar 2331223SchegarDRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); 2341223Schegar 2351223Schegar#endif /* NPCI > 0 */ 2361223Schegar