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amdgpu_module.c revision 1.2 
      1 /*	$NetBSD: amdgpu_module.c,v 1.2 2018/08/27 14:13:29 riastradh 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 1.2 2018/08/27 14:13:29 riastradh 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 	extern int drm_guarantee_initialized(void);
     64 	int error;
     65 
     66 	error = drm_guarantee_initialized();
     67 	if (error)
     68 		return error;
     69 
     70 	amdgpu_drm_driver->num_ioctls = amdgpu_max_kms_ioctl;
     71 	amdgpu_drm_driver->driver_features |= DRIVER_MODESET;
     72 
     73 #if notyet			/* XXX amdgpu acpi */
     74 	amdgpu_register_atpx_handler();
     75 #endif
     76 
     77 	amdgpu_amdkfd_init();
     78 
     79 	error = drm_pci_init(amdgpu_drm_driver, NULL);
     80 	if (error) {
     81 		aprint_error("amdgpu: failed to init pci: %d\n",
     82 		    error);
     83 		return error;
     84 	}
     85 	drm_sysctl_init(&amdgpu_def);
     86 
     87 	return 0;
     88 }
     89 
     90 int	amdgpu_guarantee_initialized(void); /* XXX */
     91 int
     92 amdgpu_guarantee_initialized(void)
     93 {
     94 #ifdef _MODULE
     95 	return 0;
     96 #else
     97 	static ONCE_DECL(amdgpu_init_once);
     98 
     99 	return RUN_ONCE(&amdgpu_init_once, &amdgpu_init);
    100 #endif
    101 }
    102 
    103 static void
    104 amdgpu_fini(void)
    105 {
    106 
    107 	drm_sysctl_fini(&amdgpu_def);
    108 	drm_pci_exit(amdgpu_drm_driver, NULL);
    109 	amdgpu_amdkfd_fini();
    110 #if notyet			/* XXX amdgpu acpi */
    111 	amdgpu_unregister_atpx_handler();
    112 #endif
    113 }
    114 
    115 static int
    116 amdgpu_modcmd(modcmd_t cmd, void *arg __unused)
    117 {
    118 	int error;
    119 
    120 	switch (cmd) {
    121 	case MODULE_CMD_INIT:
    122 		/* XXX Kludge it up...  Must happen before attachment.  */
    123 #ifdef _MODULE
    124 		error = amdgpu_init();
    125 #else
    126 		error = amdgpu_guarantee_initialized();
    127 #endif
    128 		if (error) {
    129 			aprint_error("amdgpu: failed to initialize: %d\n",
    130 			    error);
    131 			return error;
    132 		}
    133 #ifdef _MODULE
    134 		error = config_init_component(cfdriver_ioconf_amdgpu,
    135 		    cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu);
    136 		if (error) {
    137 			aprint_error("amdgpu: failed to init component"
    138 			    ": %d\n", error);
    139 			amdgpu_fini();
    140 			return error;
    141 		}
    142 #endif
    143 		return 0;
    144 
    145 	case MODULE_CMD_FINI:
    146 #ifdef _MODULE
    147 		error = config_fini_component(cfdriver_ioconf_amdgpu,
    148 		    cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu);
    149 		if (error) {
    150 			aprint_error("amdgpu: failed to fini component"
    151 			    ": %d\n", error);
    152 			return error;
    153 		}
    154 #endif
    155 		amdgpu_fini();
    156 		return 0;
    157 
    158 	default:
    159 		return ENOTTY;
    160 	}
    161 }
    162