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amdgpu_module.c revision 1.4.6.2 
      1 /*	$NetBSD: amdgpu_module.c,v 1.4.6.2 2019/06/10 22:07:56 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Taylor R. Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: amdgpu_module.c,v 1.4.6.2 2019/06/10 22:07:56 christos Exp $");
     34 
     35 #include <sys/types.h>
     36 #include <sys/module.h>
     37 #ifndef _MODULE
     38 #include <sys/once.h>
     39 #endif
     40 #include <sys/systm.h>
     41 
     42 #include <drm/drmP.h>
     43 #include <drm/drm_sysctl.h>
     44 
     45 #include "amdgpu_amdkfd.h"
     46 #include "amdgpu_drv.h"
     47 
     48 MODULE(MODULE_CLASS_DRIVER, amdgpu, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */
     49 
     50 #ifdef _MODULE
     51 #include "ioconf.c"
     52 #endif
     53 
     54 /* XXX Kludge to get these from amdgpu_drv.c.  */
     55 extern struct drm_driver *const amdgpu_drm_driver;
     56 extern int amdgpu_max_kms_ioctl;
     57 
     58 struct drm_sysctl_def amdgpu_def = DRM_SYSCTL_INIT();
     59 
     60 static int
     61 amdgpu_init(void)
     62 {
     63 	int error;
     64 
     65 	error = drm_guarantee_initialized();
     66 	if (error)
     67 		return error;
     68 
     69 	amdgpu_drm_driver->num_ioctls = amdgpu_max_kms_ioctl;
     70 	amdgpu_drm_driver->driver_features |= DRIVER_MODESET;
     71 
     72 #if notyet			/* XXX amdgpu acpi */
     73 	amdgpu_register_atpx_handler();
     74 #endif
     75 
     76 	amdgpu_amdkfd_init();
     77 	drm_sysctl_init(&amdgpu_def);
     78 
     79 	return 0;
     80 }
     81 
     82 int	amdgpu_guarantee_initialized(void); /* XXX */
     83 int
     84 amdgpu_guarantee_initialized(void)
     85 {
     86 #ifdef _MODULE
     87 	return 0;
     88 #else
     89 	static ONCE_DECL(amdgpu_init_once);
     90 
     91 	return RUN_ONCE(&amdgpu_init_once, &amdgpu_init);
     92 #endif
     93 }
     94 
     95 static void
     96 amdgpu_fini(void)
     97 {
     98 
     99 	drm_sysctl_fini(&amdgpu_def);
    100 	amdgpu_amdkfd_fini();
    101 #if notyet			/* XXX amdgpu acpi */
    102 	amdgpu_unregister_atpx_handler();
    103 #endif
    104 }
    105 
    106 static int
    107 amdgpu_modcmd(modcmd_t cmd, void *arg __unused)
    108 {
    109 	int error;
    110 
    111 	switch (cmd) {
    112 	case MODULE_CMD_INIT:
    113 		/* XXX Kludge it up...  Must happen before attachment.  */
    114 #ifdef _MODULE
    115 		error = amdgpu_init();
    116 #else
    117 		error = amdgpu_guarantee_initialized();
    118 #endif
    119 		if (error) {
    120 			aprint_error("amdgpu: failed to initialize: %d\n",
    121 			    error);
    122 			return error;
    123 		}
    124 #ifdef _MODULE
    125 		error = config_init_component(cfdriver_ioconf_amdgpu,
    126 		    cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu);
    127 		if (error) {
    128 			aprint_error("amdgpu: failed to init component"
    129 			    ": %d\n", error);
    130 			amdgpu_fini();
    131 			return error;
    132 		}
    133 #endif
    134 		return 0;
    135 
    136 	case MODULE_CMD_FINI:
    137 #ifdef _MODULE
    138 		error = config_fini_component(cfdriver_ioconf_amdgpu,
    139 		    cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu);
    140 		if (error) {
    141 			aprint_error("amdgpu: failed to fini component"
    142 			    ": %d\n", error);
    143 			return error;
    144 		}
    145 #endif
    146 		amdgpu_fini();
    147 		return 0;
    148 
    149 	default:
    150 		return ENOTTY;
    151 	}
    152 }
    153