1 /* $NetBSD: amdgpu_module.c,v 1.4 2018/08/28 03:35:08 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 1.4 2018/08/28 03:35:08 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 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