tpm_isa.c

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    1 /*
    2  * Copyright (c) 2008, 2009 Michael Shalayeff
    3  * Copyright (c) 2009, 2010 Hans-Joerg Hoexer
    4  * All rights reserved.
    5  *
    6  * Permission to use, copy, modify, and distribute this software for any
    7  * purpose with or without fee is hereby granted, provided that the above
    8  * copyright notice and this permission notice appear in all copies.
    9  *
   10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
   15  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
   16  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17  */
   18 
   19 #include <sys/cdefs.h>
   20 __FBSDID("$FreeBSD$");
   21 
   22 #include <sys/param.h>
   23 #include <sys/systm.h>
   24 #include <sys/kernel.h>
   25 #include <sys/malloc.h>
   26 #include <sys/proc.h>
   27 
   28 #ifdef __FreeBSD__
   29 #include <sys/module.h>
   30 #include <sys/conf.h>
   31 #include <sys/uio.h>
   32 #include <sys/bus.h>
   33 
   34 #include <machine/bus.h>
   35 #include <sys/rman.h>
   36 #include <machine/resource.h>
   37 
   38 #include <machine/md_var.h>
   39 
   40 #include <isa/isareg.h>
   41 #include <isa/isavar.h>
   42 #else
   43 #include <sys/device.h>
   44 
   45 #include <machine/cpu.h>
   46 #include <machine/bus.h>
   47 #include <machine/intr.h>
   48 #include <machine/conf.h>
   49 
   50 #include <dev/isa/isareg.h>
   51 #include <dev/isa/isavar.h>
   52 #endif
   53 #include "tpmvar.h"
   54 
   55 static int
   56 tpm_isa_probe(device_t dev)
   57 {
   58         bus_space_tag_t iot;
   59         bus_space_handle_t ioh;
   60         struct resource *mem_res;
   61         int rv, mem_rid;
   62 
   63         mem_rid = 0;
   64         mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &mem_rid,
   65             RF_ACTIVE);
   66         if (mem_res == NULL)
   67                 return (ENXIO);
   68         iot = rman_get_bustag(mem_res);
   69         ioh = rman_get_bushandle(mem_res);
   70 
   71         if ((rv = tpm_tis12_probe(iot, ioh)))
   72                 device_set_desc(dev, "Trusted Platform Module");
   73 
   74         bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
   75         return rv ? 0 : ENXIO;
   76 }
   77 
   78 static device_method_t tpm_methods[] = {
   79 #if 0
   80         DEVMETHOD(device_identify,      tpm_identify),
   81 #endif
   82         DEVMETHOD(device_probe,         tpm_isa_probe),
   83         DEVMETHOD(device_attach,        tpm_attach),
   84         DEVMETHOD(device_detach,        tpm_detach),
   85         DEVMETHOD(device_suspend,       tpm_suspend),
   86         DEVMETHOD(device_resume,        tpm_resume),
   87         { 0, 0 }
   88 };
   89 
   90 static driver_t tpm_driver = {
   91         "tpm", tpm_methods, sizeof(struct tpm_softc),
   92 };
   93 
   94 DRIVER_MODULE(tpm, isa, tpm_driver, 0, 0);

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FreeBSD/Linux Kernel Cross Reference sys/dev/tpm/tpm_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/tpm/tpm_isa.c