ahci_generic.c

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    1 /*-
    2  * Copyright (c) 2009-2012 Alexander Motin <mav@FreeBSD.org>
    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  *    without modification, immediately at the beginning of the file.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include <sys/param.h>
   31 #include <sys/module.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/bus.h>
   35 #include <sys/conf.h>
   36 #include <sys/endian.h>
   37 #include <sys/malloc.h>
   38 #include <sys/lock.h>
   39 #include <sys/mutex.h>
   40 #include <sys/rman.h>
   41 
   42 #include <machine/bus.h>
   43 #include <machine/resource.h>
   44 
   45 #include <dev/ahci/ahci.h>
   46 
   47 #include <dev/ofw/ofw_bus.h>
   48 #include <dev/ofw/ofw_bus_subr.h>
   49 
   50 static struct ofw_compat_data compat_data[] = {
   51         {"generic-ahci",        1},
   52         {"snps,dwc-ahci",       1},
   53         {NULL,                  0}
   54 };
   55 
   56 static int
   57 ahci_gen_ctlr_reset(device_t dev)
   58 {
   59 
   60         return ahci_ctlr_reset(dev);
   61 }
   62 
   63 static int
   64 ahci_probe(device_t dev)
   65 {
   66 
   67         if (!ofw_bus_status_okay(dev))
   68                 return (ENXIO);
   69 
   70         if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
   71                 return (ENXIO);
   72 
   73         device_set_desc_copy(dev, "AHCI SATA controller");
   74         return (BUS_PROBE_DEFAULT);
   75 }
   76 
   77 static int
   78 ahci_gen_attach(device_t dev)
   79 {
   80         struct ahci_controller *ctlr = device_get_softc(dev);
   81         int     error;
   82 
   83         ctlr->r_rid = 0;
   84         ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ctlr->r_rid,
   85             RF_ACTIVE);
   86         if (ctlr->r_mem == NULL)
   87                 return (ENXIO);
   88 
   89         /* Setup controller defaults. */
   90         ctlr->numirqs = 1;
   91 
   92         /* Reset controller */
   93         if ((error = ahci_gen_ctlr_reset(dev)) == 0)
   94                 error = ahci_attach(dev);
   95 
   96         if (error != 0) {
   97                 if (ctlr->r_mem != NULL)
   98                         bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid,
   99                             ctlr->r_mem);
  100         }
  101         return error;
  102 }
  103 
  104 static int
  105 ahci_gen_detach(device_t dev)
  106 {
  107 
  108         ahci_detach(dev);
  109         return (0);
  110 }
  111 
  112 static devclass_t ahci_gen_devclass;
  113 static device_method_t ahci_methods[] = {
  114         DEVMETHOD(device_probe,     ahci_probe),
  115         DEVMETHOD(device_attach,    ahci_gen_attach),
  116         DEVMETHOD(device_detach,    ahci_gen_detach),
  117         DEVMETHOD(bus_print_child,  ahci_print_child),
  118         DEVMETHOD(bus_alloc_resource,       ahci_alloc_resource),
  119         DEVMETHOD(bus_release_resource,     ahci_release_resource),
  120         DEVMETHOD(bus_setup_intr,   ahci_setup_intr),
  121         DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
  122         DEVMETHOD(bus_child_location_str, ahci_child_location_str),
  123         DEVMETHOD(bus_get_dma_tag,  ahci_get_dma_tag),
  124         DEVMETHOD_END
  125 };
  126 static driver_t ahci_driver = {
  127         "ahci",
  128         ahci_methods,
  129         sizeof(struct ahci_controller)
  130 };
  131 DRIVER_MODULE(ahci, simplebus, ahci_driver, ahci_gen_devclass, NULL, NULL);

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FreeBSD/Linux Kernel Cross Reference sys/dev/ahci/ahci_generic.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ahci/ahci_generic.c