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/* $NetBSD: via_module.c,v 1.5 2021/12/19 10:33:00 riastradh Exp $ */
/*-
* Copyright (c) 2015 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Taylor R. Campbell.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__KERNEL_RCSID(0, "$NetBSD: via_module.c,v 1.5 2021/12/19 10:33:00 riastradh Exp $");
#include <sys/types.h>
#include <sys/module.h>
#include <sys/once.h>
#include <drm/drm_device.h>
#include <drm/via_drm.h>
#include "via_drv.h"
MODULE(MODULE_CLASS_DRIVER, viadrmums, "drmkms,drmkms_pci");
#ifdef _MODULE
#include "ioconf.c"
#endif
extern struct drm_driver *const via_drm_driver; /* XXX */
static int
viadrm_init(void)
{
int error;
via_init_command_verifier(); /* idempotent, no unwind needed */
error = drm_guarantee_initialized();
if (error)
return error;
return 0;
}
int viadrm_guarantee_initialized(void); /* XXX */
int
viadrm_guarantee_initialized(void)
{
#ifdef _MODULE
return 0;
#else
static ONCE_DECL(viadrm_init_once);
return RUN_ONCE(&viadrm_init_once, &viadrm_init);
#endif
}
static void
viadrm_fini(void)
{
}
static int
viadrmums_modcmd(modcmd_t cmd, void *arg __unused)
{
int error;
switch (cmd) {
case MODULE_CMD_INIT:
#ifdef _MODULE
error = viadrm_init();
#else
error = viadrm_guarantee_initialized();
#endif
if (error) {
aprint_error("viadrmums: failed to initialize: %d\n",
error);
return error;
}
#ifdef _MODULE
error = config_init_component(cfdriver_ioconf_viadrmums,
cfattach_ioconf_viadrmums, cfdata_ioconf_viadrmums);
if (error) {
aprint_error("viadrmums: failed to init component"
": %d\n", error);
viadrm_fini();
return error;
}
#endif
return 0;
case MODULE_CMD_FINI:
#ifdef _MODULE
error = config_fini_component(cfdriver_ioconf_viadrmums,
cfattach_ioconf_viadrmums, cfdata_ioconf_viadrmums);
if (error) {
aprint_error("viadrmums: failed to fini component"
": %d\n", error);
return error;
}
#endif
viadrm_fini();
return 0;
default:
return ENOTTY;
}
}
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