1 /* $NetBSD: amdgpu_module.c,v 1.9 2021/12/19 12:30:40 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 1.9 2021/12/19 12:30:40 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/drm_device.h> 43 #include <drm/drm_drv.h> 44 #include <drm/drm_sysctl.h> 45 46 #include <linux/idr.h> 47 #include <linux/mutex.h> 48 49 #include "amdgpu.h" 50 #include "amdgpu_amdkfd.h" 51 #include "amdgpu_drv.h" 52 53 MODULE(MODULE_CLASS_DRIVER, amdgpu, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */ 54 55 #ifdef _MODULE 56 #include "ioconf.c" 57 #endif 58 59 /* XXX Kludge to get these from amdgpu_drv.c. */ 60 extern struct drm_driver *const amdgpu_drm_driver; 61 extern struct amdgpu_mgpu_info mgpu_info; 62 63 /* XXX Kludge to replace DEFINE_IDA in amdgpu_ids.c. */ 64 extern struct ida amdgpu_pasid_ida; 65 66 struct drm_sysctl_def amdgpu_def = DRM_SYSCTL_INIT(); 67 68 static int 69 amdgpu_init(void) 70 { 71 int error; 72 73 error = drm_guarantee_initialized(); 74 if (error) 75 return error; 76 77 amdgpu_drm_driver->num_ioctls = amdgpu_max_kms_ioctl; 78 amdgpu_drm_driver->driver_features &= ~DRIVER_ATOMIC; 79 80 linux_mutex_init(&mgpu_info.mutex); 81 ida_init(&amdgpu_pasid_ida); 82 83 error = amdgpu_sync_init(); 84 KASSERT(error == 0); 85 error = amdgpu_fence_slab_init(); 86 KASSERT(error == 0); 87 88 #if notyet /* XXX amdgpu acpi */ 89 amdgpu_register_atpx_handler(); 90 #endif 91 92 amdgpu_amdkfd_init(); 93 drm_sysctl_init(&amdgpu_def); 94 95 return 0; 96 } 97 98 int amdgpu_guarantee_initialized(void); /* XXX */ 99 int 100 amdgpu_guarantee_initialized(void) 101 { 102 #ifdef _MODULE 103 return 0; 104 #else 105 static ONCE_DECL(amdgpu_init_once); 106 107 return RUN_ONCE(&amdgpu_init_once, &amdgpu_init); 108 #endif 109 } 110 111 static void 112 amdgpu_fini(void) 113 { 114 115 drm_sysctl_fini(&amdgpu_def); 116 amdgpu_amdkfd_fini(); 117 #if notyet /* XXX amdgpu acpi */ 118 amdgpu_unregister_atpx_handler(); 119 #endif 120 amdgpu_fence_slab_fini(); 121 amdgpu_sync_fini(); 122 123 ida_destroy(&amdgpu_pasid_ida); 124 linux_mutex_destroy(&mgpu_info.mutex); 125 } 126 127 static int 128 amdgpu_modcmd(modcmd_t cmd, void *arg __unused) 129 { 130 int error; 131 132 switch (cmd) { 133 case MODULE_CMD_INIT: 134 /* XXX Kludge it up... Must happen before attachment. */ 135 #ifdef _MODULE 136 error = amdgpu_init(); 137 #else 138 error = amdgpu_guarantee_initialized(); 139 #endif 140 if (error) { 141 aprint_error("amdgpu: failed to initialize: %d\n", 142 error); 143 return error; 144 } 145 #ifdef _MODULE 146 error = config_init_component(cfdriver_ioconf_amdgpu, 147 cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu); 148 if (error) { 149 aprint_error("amdgpu: failed to init component" 150 ": %d\n", error); 151 amdgpu_fini(); 152 return error; 153 } 154 #endif 155 return 0; 156 157 case MODULE_CMD_FINI: 158 #ifdef _MODULE 159 error = config_fini_component(cfdriver_ioconf_amdgpu, 160 cfattach_ioconf_amdgpu, cfdata_ioconf_amdgpu); 161 if (error) { 162 aprint_error("amdgpu: failed to fini component" 163 ": %d\n", error); 164 return error; 165 } 166 #endif 167 amdgpu_fini(); 168 return 0; 169 170 default: 171 return ENOTTY; 172 } 173 } 174