sys/dev/raid/mlx/mlx_pci.c

   1 /*-
   2  * Copyright (c) 1999 Michael Smith
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      $FreeBSD: src/sys/dev/mlx/mlx_pci.c,v 1.4.2.5 2001/06/25 04:37:51 msmith Exp $
  27  *      $DragonFly: src/sys/dev/raid/mlx/mlx_pci.c,v 1.4 2006/10/25 20:56:01 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/bus.h>
  34 #include <sys/conf.h>
  35 #include <sys/devicestat.h>
  36 #include <sys/disk.h>
  37 #include <sys/rman.h>
  38
  39 #include <bus/pci/pcireg.h>
  40 #include <bus/pci/pcivar.h>
  41
  42 #include "mlx_compat.h"
  43 #include "mlxio.h"
  44 #include "mlxvar.h"
  45 #include "mlxreg.h"
  46
  47 static int                      mlx_pci_probe(device_t dev);
  48 static int                      mlx_pci_attach(device_t dev);
  49
  50 static device_method_t mlx_methods[] = {
  51     /* Device interface */
  52     DEVMETHOD(device_probe,     mlx_pci_probe),
  53     DEVMETHOD(device_attach,    mlx_pci_attach),
  54     DEVMETHOD(device_detach,    mlx_detach),
  55     DEVMETHOD(device_shutdown,  mlx_shutdown),
  56     DEVMETHOD(device_suspend,   mlx_suspend),
  57     DEVMETHOD(device_resume,    mlx_resume),
  58
  59     DEVMETHOD(bus_print_child,  bus_generic_print_child),
  60     DEVMETHOD(bus_driver_added, bus_generic_driver_added),
  61     { 0, 0 }
  62 };
  63
  64 static driver_t mlx_pci_driver = {
  65         "mlx",
  66         mlx_methods,
  67         sizeof(struct mlx_softc)
  68 };
  69
  70 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0);
  71
  72 struct mlx_ident
  73 {
  74     u_int16_t   vendor;
  75     u_int16_t   device;
  76     u_int16_t   subvendor;
  77     u_int16_t   subdevice;
  78     int         iftype;
  79     char        *desc;
  80 } mlx_identifiers[] = {
  81     {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
  82     {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
  83     {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
  84     {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
  85     {0, 0, 0, 0, 0, 0}
  86 };
  87
  88 static int
  89 mlx_pci_probe(device_t dev)
  90 {
  91     struct mlx_ident    *m;
  92
  93     debug_called(1);
  94
  95     for (m = mlx_identifiers; m->vendor != 0; m++) {
  96         if ((m->vendor == pci_get_vendor(dev)) &&
  97             (m->device == pci_get_device(dev)) &&
  98             ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
  99                                      (m->subdevice == pci_get_subdevice(dev))))) {
 100
 101             device_set_desc(dev, m->desc);
 102             return(-10);        /* allow room to be overridden */
 103         }
 104     }
 105     return(ENXIO);
 106 }
 107
 108 static int
 109 mlx_pci_attach(device_t dev)
 110 {
 111     struct mlx_softc    *sc;
 112     int                 i, error;
 113     u_int32_t           command;
 114
 115     debug_called(1);
 116
 117     /*
 118      * Make sure we are going to be able to talk to this board.
 119      */
 120     command = pci_read_config(dev, PCIR_COMMAND, 2);
 121     if ((command & PCIM_CMD_MEMEN) == 0) {
 122         device_printf(dev, "memory window not available\n");
 123         return(ENXIO);
 124     }
 125     /* force the busmaster enable bit on */
 126     command |= PCIM_CMD_BUSMASTEREN;
 127     pci_write_config(dev, PCIR_COMMAND, command, 2);
 128
 129     /*
 130      * Initialise softc.
 131      */
 132     sc = device_get_softc(dev);
 133     bzero(sc, sizeof(*sc));
 134     sc->mlx_dev = dev;
 135
 136     /*
 137      * Work out what sort of adapter this is (we need to know this in order
 138      * to map the appropriate interface resources).
 139      */
 140     sc->mlx_iftype = 0;
 141     for (i = 0; mlx_identifiers[i].vendor != 0; i++) {
 142         if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) &&
 143             (mlx_identifiers[i].device == pci_get_device(dev))) {
 144             sc->mlx_iftype = mlx_identifiers[i].iftype;
 145             break;
 146         }
 147     }
 148     if (sc->mlx_iftype == 0)            /* shouldn't happen */
 149         return(ENXIO);
 150
 151     /*
 152      * Allocate the PCI register window.
 153      */
 154
 155     /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
 156     switch(sc->mlx_iftype) {
 157     case MLX_IFTYPE_2:
 158     case MLX_IFTYPE_3:
 159         sc->mlx_mem_type = SYS_RES_MEMORY;
 160         sc->mlx_mem_rid = MLX_CFG_BASE1;
 161         sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
 162         if (sc->mlx_mem == NULL) {
 163             sc->mlx_mem_type = SYS_RES_IOPORT;
 164             sc->mlx_mem_rid = MLX_CFG_BASE0;
 165             sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
 166         }
 167         break;
 168     case MLX_IFTYPE_4:
 169     case MLX_IFTYPE_5:
 170         sc->mlx_mem_type = SYS_RES_MEMORY;
 171         sc->mlx_mem_rid = MLX_CFG_BASE0;
 172         sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
 173         break;
 174     }
 175     if (sc->mlx_mem == NULL) {
 176         device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
 177         mlx_free(sc);
 178         return(ENXIO);
 179     }
 180     sc->mlx_btag = rman_get_bustag(sc->mlx_mem);
 181     sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem);
 182
 183     /*
 184      * Allocate the parent bus DMA tag appropriate for PCI.
 185      */
 186     error = bus_dma_tag_create(NULL,                    /* parent */
 187                                1, 0,                    /* alignment, boundary */
 188                                BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
 189                                BUS_SPACE_MAXADDR,       /* highaddr */
 190                                NULL, NULL,              /* filter, filterarg */
 191                                MAXBSIZE, MLX_NSEG,      /* maxsize, nsegments */
 192                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 193                                BUS_DMA_ALLOCNOW,        /* flags */
 194                                &sc->mlx_parent_dmat);
 195     if (error != 0) {
 196         device_printf(dev, "can't allocate parent DMA tag\n");
 197         mlx_free(sc);
 198         return(ENOMEM);
 199     }
 200
 201     /*
 202      * Do bus-independant initialisation.
 203      */
 204     error = mlx_attach(sc);
 205     if (error != 0) {
 206         mlx_free(sc);
 207         return(error);
 208     }
 209
 210     /*
 211      * Start the controller.
 212      */
 213     mlx_startup(sc);
 214     return(0);
 215 }