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      1 /*	$NetBSD: rump_dev.c,v 1.29 2023/04/23 07:03:30 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     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
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: rump_dev.c,v 1.29 2023/04/23 07:03:30 riastradh Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/device.h>
     33 
     34 #include <rump-sys/kern.h>
     35 #include <rump-sys/dev.h>
     36 
     37 int rumpdev_do_sys_sync_stub(struct lwp *);
     38 int
     39 rumpdev_do_sys_sync_stub(struct lwp *l)
     40 {
     41 	return 0;
     42 }
     43 __weak_alias(do_sys_sync,rumpdev_do_sys_sync_stub);
     44 
     45 int rumpdev_vfs_syncwait_stub(void);
     46 int
     47 rumpdev_vfs_syncwait_stub(void)
     48 {
     49 	return 0;
     50 }
     51 __weak_alias(vfs_syncwait,rumpdev_vfs_syncwait_stub);
     52 
     53 const char *rootspec = "rump0a"; /* usually comes from config */
     54 
     55 RUMP_COMPONENT(RUMP__FACTION_DEV)
     56 {
     57 	extern int cold;
     58 
     59 	pmf_init();
     60 
     61 	KERNEL_LOCK(1, curlwp);
     62 
     63 	rump_mainbus_init();
     64 
     65 	rump_component_init(RUMP_COMPONENT_DEV);
     66 
     67 	rump_pdev_finalize();
     68 
     69 	cold = 0;
     70 
     71 	/*
     72 	 * XXX: does the "if" make any sense?  What if someone wants
     73 	 * to dynamically load a driver later on?
     74 	 */
     75 	if (rump_component_count(RUMP_COMPONENT_DEV) > 0
     76 	    || rump_component_count(RUMP_COMPONENT_DEV_AFTERMAINBUS) > 0) {
     77 		rump_mainbus_attach();
     78 		if (config_rootfound("mainbus", NULL) == NULL)
     79 			panic("no mainbus");
     80 
     81 		rump_component_init(RUMP_COMPONENT_DEV_AFTERMAINBUS);
     82 	}
     83 	config_finalize();
     84 
     85 	KERNEL_UNLOCK_LAST(curlwp);
     86 
     87 	/* if there is a vfs, perform activity deferred until mountroot */
     88 	if (rump_component_count(RUMP__FACTION_VFS)) {
     89 		config_create_mountrootthreads();
     90 		yield();
     91 	}
     92 }
     93 
     94 void
     95 cpu_rootconf(void)
     96 {
     97 
     98 	panic("%s: unimplemented", __func__);
     99 }
    100 
    101 void
    102 cpu_bootconf(void)
    103 {
    104 }
    105 
    106 void
    107 device_register(device_t dev, void *v)
    108 {
    109 
    110 	/* nada */
    111 }
    112 
    113 void
    114 device_register_post_config(device_t dev, void *v)
    115 {
    116 
    117 	/* nada */
    118 }
    119