dpt_pci.c revision 112780
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 112780 2003-03-29 08:30:45Z mdodd $ 3032801Sjulian */ 3132801Sjulian 3232801Sjulian#include <sys/param.h> 3332801Sjulian#include <sys/systm.h> 3432801Sjulian#include <sys/kernel.h> 3559078Smdodd#include <sys/module.h> 3659078Smdodd#include <sys/bus.h> 3732801Sjulian 3839234Sgibbs#include <machine/bus_memio.h> 3939234Sgibbs#include <machine/bus_pio.h> 4039234Sgibbs#include <machine/bus.h> 4159078Smdodd#include <machine/resource.h> 4259078Smdodd#include <sys/rman.h> 4339234Sgibbs 4459078Smdodd#include <pci/pcireg.h> 4559078Smdodd#include <pci/pcivar.h> 4659078Smdodd 4739234Sgibbs#include <cam/scsi/scsi_all.h> 4839234Sgibbs 4939234Sgibbs#include <dev/dpt/dpt.h> 5032801Sjulian 5159078Smdodd#define DPT_VENDOR_ID 0x1044 5259078Smdodd#define DPT_DEVICE_ID 0xa400 5332801Sjulian 5459078Smdodd#define DPT_PCI_IOADDR PCIR_MAPS /* I/O Address */ 5559078Smdodd#define DPT_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */ 5632801Sjulian 5759078Smdodd#define ISA_PRIMARY_WD_ADDRESS 0x1f8 5832801Sjulian 5959078Smdoddstatic int dpt_pci_probe (device_t); 6059078Smdoddstatic int dpt_pci_attach (device_t); 6132801Sjulian 6259078Smdoddstatic int 6359078Smdodddpt_pci_probe (device_t dev) 6459078Smdodd{ 6559078Smdodd if ((pci_get_vendor(dev) == DPT_VENDOR_ID) && 6659078Smdodd (pci_get_device(dev) == DPT_DEVICE_ID)) { 6759078Smdodd device_set_desc(dev, "DPT Caching SCSI RAID Controller"); 6859078Smdodd return (0); 6959078Smdodd } 7059078Smdodd return (ENXIO); 7159078Smdodd} 7232801Sjulian 7359078Smdoddstatic int 7459078Smdodddpt_pci_attach (device_t dev) 7532801Sjulian{ 7659078Smdodd dpt_softc_t * dpt; 7759078Smdodd int s; 7859078Smdodd int error = 0; 7932801Sjulian 8059078Smdodd u_int32_t command; 8132801Sjulian 82112780Smdodd dpt = device_get_softc(dev); 83112780Smdodd 8459078Smdodd command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1); 8532801Sjulian 8659078Smdodd#ifdef DPT_ALLOW_MMIO 8759078Smdodd if ((command & PCIM_CMD_MEMEN) != 0) { 88112780Smdodd dpt->io_rid = DPT_PCI_MEMADDR; 89112780Smdodd dpt->io_type = SYS_RES_MEMORY; 90112780Smdodd dpt->io_res = bus_alloc_resource(dev, dpt->io_type, 91112780Smdodd &dpt->io_rid, 92112780Smdodd 0, ~0, 1, RF_ACTIVE); 9359078Smdodd } 9432801Sjulian#endif 95112780Smdodd if (dpt->io_res == NULL && (command & PCIM_CMD_PORTEN) != 0) { 96112780Smdodd dpt->io_rid = DPT_PCI_IOADDR; 97112780Smdodd dpt->io_type = SYS_RES_IOPORT; 98112780Smdodd dpt->io_res = bus_alloc_resource(dev, dpt->io_type, 99112780Smdodd &dpt->io_rid, 100112780Smdodd 0, ~0, 1, RF_ACTIVE); 10159078Smdodd } 10232801Sjulian 103112780Smdodd if (dpt->io_res == NULL) { 10459078Smdodd device_printf(dev, "can't allocate register resources\n"); 10559078Smdodd error = ENOMEM; 10659078Smdodd goto bad; 10759078Smdodd } 108112780Smdodd dpt->io_offset = 0x10; 10932801Sjulian 110112780Smdodd dpt->irq_rid = 0; 111112780Smdodd dpt->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &dpt->irq_rid, 112112780Smdodd 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 113112780Smdodd if (dpt->irq_res == NULL) { 11459078Smdodd device_printf(dev, "No irq?!\n"); 11559078Smdodd error = ENOMEM; 11659078Smdodd goto bad; 11759078Smdodd } 11832801Sjulian 11959078Smdodd /* Ensure busmastering is enabled */ 12059078Smdodd command |= PCIM_CMD_BUSMASTEREN; 12159078Smdodd pci_write_config(dev, PCIR_COMMAND, command, /*bytes*/1); 12232801Sjulian 123112780Smdodd if (rman_get_start(dpt->io_res) == (ISA_PRIMARY_WD_ADDRESS - 0x10)) { 12432801Sjulian#ifdef DPT_DEBUG_WARN 12559078Smdodd device_printf(dev, "Mapped as an IDE controller. " 12659078Smdodd "Disabling SCSI setup\n"); 12732801Sjulian#endif 12859078Smdodd error = ENXIO; 12959078Smdodd goto bad; 13039234Sgibbs } 13132801Sjulian 132112780Smdodd dpt_alloc(dev); 13332801Sjulian 13439234Sgibbs /* Allocate a dmatag representing the capabilities of this attachment */ 13539234Sgibbs /* XXX Should be a child of the PCI bus dma tag */ 13659078Smdodd if (bus_dma_tag_create( /* parent */ NULL, 13759078Smdodd /* alignemnt */ 1, 13859078Smdodd /* boundary */ 0, 13959078Smdodd /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 14059078Smdodd /* highaddr */ BUS_SPACE_MAXADDR, 14159078Smdodd /* filter */ NULL, 14259078Smdodd /* filterarg */ NULL, 14359078Smdodd /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 144104710Speter /* nsegments */ ~0, 14559078Smdodd /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 14659078Smdodd /* flags */ 0, 14759078Smdodd &dpt->parent_dmat) != 0) { 14839234Sgibbs dpt_free(dpt); 14959078Smdodd error = ENXIO; 15059078Smdodd goto bad; 15139234Sgibbs } 15232801Sjulian 15359078Smdodd s = splcam(); 15432801Sjulian 15539234Sgibbs if (dpt_init(dpt) != 0) { 15639234Sgibbs dpt_free(dpt); 15759078Smdodd error = ENXIO; 15859078Smdodd goto bad; 15939234Sgibbs } 16032801Sjulian 16139234Sgibbs /* Register with the XPT */ 16239234Sgibbs dpt_attach(dpt); 16359078Smdodd 16439234Sgibbs splx(s); 16559078Smdodd 166112780Smdodd if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY, 167112780Smdodd dpt_intr, dpt, &dpt->ih)) { 16859078Smdodd device_printf(dev, "Unable to register interrupt handler\n"); 16959078Smdodd error = ENXIO; 17059078Smdodd goto bad; 17159078Smdodd } 17259078Smdodd 17359078Smdodd return (error); 17459078Smdodd 17559078Smdoddbad: 176112780Smdodd dpt_release_resources(dev); 17759078Smdodd 178112780Smdodd if (dpt) 179112780Smdodd dpt_free(dpt); 180112780Smdodd 18159078Smdodd return (error); 18232801Sjulian} 18359078Smdodd 18459078Smdoddstatic device_method_t dpt_pci_methods[] = { 18559078Smdodd /* Device interface */ 18659078Smdodd DEVMETHOD(device_probe, dpt_pci_probe), 18759078Smdodd DEVMETHOD(device_attach, dpt_pci_attach), 188112780Smdodd DEVMETHOD(device_detach, dpt_detach), 18959078Smdodd 19059078Smdodd { 0, 0 } 19159078Smdodd}; 19259078Smdodd 19359078Smdoddstatic driver_t dpt_pci_driver = { 19459078Smdodd "dpt", 19559078Smdodd dpt_pci_methods, 19659078Smdodd sizeof(dpt_softc_t), 19759078Smdodd}; 19859078Smdodd 19959078SmdoddDRIVER_MODULE(dpt, pci, dpt_pci_driver, dpt_devclass, 0, 0); 200