/* * Product specific probe and attach routines for: * Buslogic BT946, BT948, BT956, BT958 SCSI controllers * * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: bt_pci.c,v 1.5 1999/04/18 15:50:35 peter Exp $ */ #include "pci.h" #if NPCI > 0 #include #include #include #include #include #include #include #include #include #include #include #include #define BT_PCI_IOADDR PCIR_MAPS #define BT_PCI_MEMADDR PCIR_MAPS + 4 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul static int bt_pci_alloc_resources(device_t dev) { int command, type = 0, rid, zero; struct resource *regs = 0; struct resource *irq = 0; command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); #if 0 /* XXX Memory Mapped I/O seems to cause problems */ if (command & PCIM_CMD_MEMEN) { type = SYS_RES_MEMORY; rid = BT_PCI_MEMADDR; regs = bus_alloc_resource(dev, type, &rid, 0, ~0, 1, RF_ACTIVE); } #else if (!regs && (command & PCIM_CMD_PORTEN)) { type = SYS_RES_IOPORT; rid = BT_PCI_IOADDR; regs = bus_alloc_resource(dev, type, &rid, 0, ~0, 1, RF_ACTIVE); } #endif if (!regs) return (ENOMEM); zero = 0; irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); if (!irq) { bus_release_resource(dev, type, rid, regs); return (ENOMEM); } bt_init_softc(dev, regs, irq, 0); return (0); } static void bt_pci_release_resources(device_t dev) { struct bt_softc *bt = device_get_softc(dev); if (bt->port) /* XXX can't cope with memory registers anyway */ bus_release_resource(dev, SYS_RES_IOPORT, BT_PCI_IOADDR, bt->port); if (bt->irq) bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); bt_free_softc(dev); } static int bt_pci_probe(device_t dev) { switch (pci_get_devid(dev)) { case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: { struct bt_softc *bt = device_get_softc(dev); pci_info_data_t pci_info; int error; error = bt_pci_alloc_resources(dev); if (error) return (error); /* * Determine if an ISA compatible I/O port has been * enabled. If so, record the port so it will not * be probed by our ISA probe. If the PCI I/O port * was not set to the compatibility port, disable it. */ error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, /*param*/NULL, /*paramlen*/0, (u_int8_t*)&pci_info, sizeof(pci_info), DEFAULT_CMD_TIMEOUT); if (error == 0 && pci_info.io_port < BIO_DISABLED) { bt_mark_probed_bio(pci_info.io_port); if (bt->bsh != bt_iop_from_bio(pci_info.io_port)) { u_int8_t new_addr; new_addr = BIO_DISABLED; bt_cmd(bt, BOP_MODIFY_IO_ADDR, /*param*/&new_addr, /*paramlen*/1, /*reply_buf*/NULL, /*reply_len*/0, DEFAULT_CMD_TIMEOUT); } } bt_pci_release_resources(dev); device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter"); return (0); } default: break; } return (ENXIO); } static int bt_pci_attach(device_t dev) { struct bt_softc *bt = device_get_softc(dev); int opri; int error; /* Initialize softc */ error = bt_pci_alloc_resources(dev); if (error) { device_printf(dev, "can't allocate resources in bt_pci_attach\n"); return error; } /* Allocate a dmatag for our CCB DMA maps */ /* XXX Should be a child of the PCI bus dma tag */ if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, /*nsegments*/BUS_SPACE_UNRESTRICTED, /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0, &bt->parent_dmat) != 0) { bt_pci_release_resources(dev); return (ENOMEM); } /* * Protect ourself from spurrious interrupts during * intialization and attach. We should really rely * on interrupts during attach, but we don't have * access to our interrupts during ISA probes, so until * that changes, we mask our interrupts during attach * too. */ opri = splcam(); if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) { bt_pci_release_resources(dev); splx(opri); return (ENXIO); } error = bt_attach(dev); splx(opri); if (error) { bt_pci_release_resources(dev); return (error); } return (0); } static device_method_t bt_pci_methods[] = { /* Device interface */ DEVMETHOD(device_probe, bt_pci_probe), DEVMETHOD(device_attach, bt_pci_attach), { 0, 0 } }; static driver_t bt_pci_driver = { "bt", bt_pci_methods, DRIVER_TYPE_CAM, sizeof(struct bt_softc), }; static devclass_t bt_devclass; DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0); #endif /* NPCI > 0 */