FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx/mlx_pci.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 1999 Michael Smith
      * 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.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bio.h>
    #include <sys/kernel.h>
    #include <sys/lock.h>
    #include <sys/module.h>
    #include <sys/mutex.h>
    #include <sys/sx.h>
    
    #include <sys/bus.h>
    #include <sys/conf.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/rman.h>
    
    #include <geom/geom_disk.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    
    #include <dev/mlx/mlxio.h>
    #include <dev/mlx/mlxvar.h>
    #include <dev/mlx/mlxreg.h>
    
    static int                      mlx_pci_probe(device_t dev);
    static int                      mlx_pci_attach(device_t dev);
    
    static device_method_t mlx_methods[] = {
        /* Device interface */
        DEVMETHOD(device_probe,     mlx_pci_probe),
        DEVMETHOD(device_attach,    mlx_pci_attach),
        DEVMETHOD(device_detach,    mlx_detach),
        DEVMETHOD(device_shutdown,  mlx_shutdown),
        DEVMETHOD(device_suspend,   mlx_suspend),
        DEVMETHOD(device_resume,    mlx_resume),
    
        DEVMETHOD_END
    };
    
    static driver_t mlx_pci_driver = {
            "mlx",
            mlx_methods,
            sizeof(struct mlx_softc)
    };
    
    DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0);
    
    struct mlx_ident
    {
        u_int16_t   vendor;
        u_int16_t   device;
        u_int16_t   subvendor;
        u_int16_t   subdevice;
        int         iftype;
        char        *desc;
    } mlx_identifiers[] = {
        {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
        {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
        {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
        {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
        {0, 0, 0, 0, 0, 0}
    };
    
    static struct mlx_ident *
    mlx_pci_match(device_t dev)
    {
        struct mlx_ident *m;
   
       for (m = mlx_identifiers; m->vendor != 0; m++) {
           if ((m->vendor == pci_get_vendor(dev)) &&
               (m->device == pci_get_device(dev)) &&
               ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
                                        (m->subdevice == pci_get_subdevice(dev)))))
               return (m);
       }
       return (NULL);
   }
   
   static int
   mlx_pci_probe(device_t dev)
   {
       struct mlx_ident    *m;
   
       debug_called(1);
   
       m = mlx_pci_match(dev);
       if (m != NULL) {
           device_set_desc(dev, m->desc);
           return(BUS_PROBE_DEFAULT);
       }
       return(ENXIO);
   }
   
   static int
   mlx_pci_attach(device_t dev)
   {
       struct mlx_softc    *sc;
       struct mlx_ident    *m;
       int                 error;
   
       debug_called(1);
   
       pci_enable_busmaster(dev);
   
       sc = device_get_softc(dev);
       sc->mlx_dev = dev;
   
       /*
        * Work out what sort of adapter this is (we need to know this in order
        * to map the appropriate interface resources).
        */
       m = mlx_pci_match(dev);
       if (m == NULL)              /* shouldn't happen */
           return(ENXIO);
       sc->mlx_iftype = m->iftype;
   
       mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF);
       sx_init(&sc->mlx_config_lock, "mlx config");
       callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0);
   
       /*
        * Allocate the PCI register window.
        */
       
       /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
       switch(sc->mlx_iftype) {
       case MLX_IFTYPE_2:
       case MLX_IFTYPE_3:
           sc->mlx_mem_type = SYS_RES_MEMORY;
           sc->mlx_mem_rid = MLX_CFG_BASE1;
           sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
                   &sc->mlx_mem_rid, RF_ACTIVE);
           if (sc->mlx_mem == NULL) {
               sc->mlx_mem_type = SYS_RES_IOPORT;
               sc->mlx_mem_rid = MLX_CFG_BASE0;
               sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
                   &sc->mlx_mem_rid, RF_ACTIVE);
           }
           break;
       case MLX_IFTYPE_4:
       case MLX_IFTYPE_5:
           sc->mlx_mem_type = SYS_RES_MEMORY;
           sc->mlx_mem_rid = MLX_CFG_BASE0;
           sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
                   &sc->mlx_mem_rid, RF_ACTIVE);
           break;
       }
       if (sc->mlx_mem == NULL) {
           device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
           mlx_free(sc);
           return(ENXIO);
       }
   
       /*
        * Allocate the parent bus DMA tag appropriate for PCI.
        */
       error = bus_dma_tag_create(bus_get_dma_tag(dev),    /* PCI parent */
                                  1, 0,                    /* alignment, boundary */
                                  BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
                                  BUS_SPACE_MAXADDR,       /* highaddr */
                                  NULL, NULL,              /* filter, filterarg */
                                  BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
                                  BUS_SPACE_UNRESTRICTED,  /* nsegments */
                                  BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
                                  BUS_DMA_ALLOCNOW,        /* flags */
                                  NULL,                    /* lockfunc */
                                  NULL,                    /* lockarg */
                                  &sc->mlx_parent_dmat);
       if (error != 0) {
           device_printf(dev, "can't allocate parent DMA tag\n");
           mlx_free(sc);
           return(ENOMEM);
       }
   
       /*
        * Do bus-independent initialisation.
        */
       error = mlx_attach(sc);
       if (error != 0) {
           mlx_free(sc);
           return(error);
       }
       
       /*
        * Start the controller.
        */
       mlx_startup(sc);
       return(0);
   }

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