dpt_pci.c revision 119277
159078Smdodd/*- 259078Smdodd * Copyright (c) 2000 Matthew N. Dodd <winter@jurai.net> 359078Smdodd * All rights reserved. 432801Sjulian * 559078Smdodd * Copyright (c) 1997 Simon Shapiro 659078Smdodd * All Rights Reserved 759078Smdodd * 832801Sjulian * Redistribution and use in source and binary forms, with or without 932801Sjulian * modification, are permitted provided that the following conditions 1032801Sjulian * are met: 1132801Sjulian * 1. Redistributions of source code must retain the above copyright 1259078Smdodd * notice, this list of conditions and the following disclaimer. 1332801Sjulian * 2. Redistributions in binary form must reproduce the above copyright 1432801Sjulian * notice, this list of conditions and the following disclaimer in the 1532801Sjulian * documentation and/or other materials provided with the distribution. 1632801Sjulian * 1732801Sjulian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1832801Sjulian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1932801Sjulian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2059078Smdodd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2159078Smdodd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2232801Sjulian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2332801Sjulian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2432801Sjulian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2532801Sjulian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2632801Sjulian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2732801Sjulian * SUCH DAMAGE. 2832801Sjulian * 2959078Smdodd * $FreeBSD: head/sys/dev/dpt/dpt_pci.c 119277 2003-08-22 05:54:52Z imp $ 3032801Sjulian */ 3132801Sjulian 3232801Sjulian#include <sys/param.h> 3332801Sjulian#include <sys/systm.h> 3432801Sjulian#include <sys/kernel.h> 3559078Smdodd#include <sys/module.h> 36117126Sscottl#include <sys/lock.h> 37117126Sscottl#include <sys/mutex.h> 3859078Smdodd#include <sys/bus.h> 3932801Sjulian 4039234Sgibbs#include <machine/bus_memio.h> 4139234Sgibbs#include <machine/bus_pio.h> 4239234Sgibbs#include <machine/bus.h> 4359078Smdodd#include <machine/resource.h> 4459078Smdodd#include <sys/rman.h> 4539234Sgibbs 46119277Simp#include <dev/pci/pcireg.h> 47119277Simp#include <dev/pci/pcivar.h> 4859078Smdodd 4939234Sgibbs#include <cam/scsi/scsi_all.h> 5039234Sgibbs 5139234Sgibbs#include <dev/dpt/dpt.h> 5232801Sjulian 5359078Smdodd#define DPT_VENDOR_ID 0x1044 5459078Smdodd#define DPT_DEVICE_ID 0xa400 5532801Sjulian 5659078Smdodd#define DPT_PCI_IOADDR PCIR_MAPS /* I/O Address */ 5759078Smdodd#define DPT_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */ 5832801Sjulian 5959078Smdodd#define ISA_PRIMARY_WD_ADDRESS 0x1f8 6032801Sjulian 6159078Smdoddstatic int dpt_pci_probe (device_t); 6259078Smdoddstatic int dpt_pci_attach (device_t); 6332801Sjulian 6459078Smdoddstatic int 6559078Smdodddpt_pci_probe (device_t dev) 6659078Smdodd{ 6759078Smdodd if ((pci_get_vendor(dev) == DPT_VENDOR_ID) && 6859078Smdodd (pci_get_device(dev) == DPT_DEVICE_ID)) { 6959078Smdodd device_set_desc(dev, "DPT Caching SCSI RAID Controller"); 7059078Smdodd return (0); 7159078Smdodd } 7259078Smdodd return (ENXIO); 7359078Smdodd} 7432801Sjulian 7559078Smdoddstatic int 7659078Smdodddpt_pci_attach (device_t dev) 7732801Sjulian{ 7859078Smdodd dpt_softc_t * dpt; 7959078Smdodd int s; 8059078Smdodd int error = 0; 8132801Sjulian 8259078Smdodd u_int32_t command; 8332801Sjulian 84112780Smdodd dpt = device_get_softc(dev); 85112780Smdodd 8659078Smdodd command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 8732801Sjulian 8859078Smdodd#ifdef DPT_ALLOW_MMIO 8959078Smdodd if ((command & PCIM_CMD_MEMEN) != 0) { 90112780Smdodd dpt->io_rid = DPT_PCI_MEMADDR; 91112780Smdodd dpt->io_type = SYS_RES_MEMORY; 92112780Smdodd dpt->io_res = bus_alloc_resource(dev, dpt->io_type, 93112780Smdodd &dpt->io_rid, 94112780Smdodd 0, ~0, 1, RF_ACTIVE); 9559078Smdodd } 9632801Sjulian#endif 97112780Smdodd if (dpt->io_res == NULL && (command & PCIM_CMD_PORTEN) != 0) { 98112780Smdodd dpt->io_rid = DPT_PCI_IOADDR; 99112780Smdodd dpt->io_type = SYS_RES_IOPORT; 100112780Smdodd dpt->io_res = bus_alloc_resource(dev, dpt->io_type, 101112780Smdodd &dpt->io_rid, 102112780Smdodd 0, ~0, 1, RF_ACTIVE); 10359078Smdodd } 10432801Sjulian 105112780Smdodd if (dpt->io_res == NULL) { 10659078Smdodd device_printf(dev, "can't allocate register resources\n"); 10759078Smdodd error = ENOMEM; 10859078Smdodd goto bad; 10959078Smdodd } 110112780Smdodd dpt->io_offset = 0x10; 11132801Sjulian 112112780Smdodd dpt->irq_rid = 0; 113112780Smdodd dpt->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &dpt->irq_rid, 114112780Smdodd 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 115112780Smdodd if (dpt->irq_res == NULL) { 11659078Smdodd device_printf(dev, "No irq?!\n"); 11759078Smdodd error = ENOMEM; 11859078Smdodd goto bad; 11959078Smdodd } 12032801Sjulian 12159078Smdodd /* Ensure busmastering is enabled */ 12259078Smdodd command |= PCIM_CMD_BUSMASTEREN; 12359078Smdodd pci_write_config(dev, PCIR_COMMAND, command, /*bytes*/1); 12432801Sjulian 125112780Smdodd if (rman_get_start(dpt->io_res) == (ISA_PRIMARY_WD_ADDRESS - 0x10)) { 12632801Sjulian#ifdef DPT_DEBUG_WARN 12759078Smdodd device_printf(dev, "Mapped as an IDE controller. " 12859078Smdodd "Disabling SCSI setup\n"); 12932801Sjulian#endif 13059078Smdodd error = ENXIO; 13159078Smdodd goto bad; 13239234Sgibbs } 13332801Sjulian 134112780Smdodd dpt_alloc(dev); 13532801Sjulian 13639234Sgibbs /* Allocate a dmatag representing the capabilities of this attachment */ 13739234Sgibbs /* XXX Should be a child of the PCI bus dma tag */ 13859078Smdodd if (bus_dma_tag_create( /* parent */ NULL, 13959078Smdodd /* alignemnt */ 1, 14059078Smdodd /* boundary */ 0, 14159078Smdodd /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 14259078Smdodd /* highaddr */ BUS_SPACE_MAXADDR, 14359078Smdodd /* filter */ NULL, 14459078Smdodd /* filterarg */ NULL, 14559078Smdodd /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 146104710Speter /* nsegments */ ~0, 14759078Smdodd /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 14859078Smdodd /* flags */ 0, 149117126Sscottl /* lockfunc */ busdma_lock_mutex, 150117126Sscottl /* lockarg */ &Giant, 15159078Smdodd &dpt->parent_dmat) != 0) { 15239234Sgibbs dpt_free(dpt); 15359078Smdodd error = ENXIO; 15459078Smdodd goto bad; 15539234Sgibbs } 15632801Sjulian 15759078Smdodd s = splcam(); 15832801Sjulian 15939234Sgibbs if (dpt_init(dpt) != 0) { 16039234Sgibbs dpt_free(dpt); 16159078Smdodd error = ENXIO; 16259078Smdodd goto bad; 16339234Sgibbs } 16432801Sjulian 16539234Sgibbs /* Register with the XPT */ 16639234Sgibbs dpt_attach(dpt); 16759078Smdodd 16839234Sgibbs splx(s); 16959078Smdodd 170112780Smdodd if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY, 171112780Smdodd dpt_intr, dpt, &dpt->ih)) { 17259078Smdodd device_printf(dev, "Unable to register interrupt handler\n"); 17359078Smdodd error = ENXIO; 17459078Smdodd goto bad; 17559078Smdodd } 17659078Smdodd 17759078Smdodd return (error); 17859078Smdodd 17959078Smdoddbad: 180112780Smdodd dpt_release_resources(dev); 18159078Smdodd 182112780Smdodd if (dpt) 183112780Smdodd dpt_free(dpt); 184112780Smdodd 18559078Smdodd return (error); 18632801Sjulian} 18759078Smdodd 18859078Smdoddstatic device_method_t dpt_pci_methods[] = { 18959078Smdodd /* Device interface */ 19059078Smdodd DEVMETHOD(device_probe, dpt_pci_probe), 19159078Smdodd DEVMETHOD(device_attach, dpt_pci_attach), 192112780Smdodd DEVMETHOD(device_detach, dpt_detach), 19359078Smdodd 19459078Smdodd { 0, 0 } 19559078Smdodd}; 19659078Smdodd 19759078Smdoddstatic driver_t dpt_pci_driver = { 19859078Smdodd "dpt", 19959078Smdodd dpt_pci_methods, 20059078Smdodd sizeof(dpt_softc_t), 20159078Smdodd}; 20259078Smdodd 20359078SmdoddDRIVER_MODULE(dpt, pci, dpt_pci_driver, dpt_devclass, 0, 0); 204