1 /* $NetBSD: i915_module.c,v 1.19 2022/07/17 14:10:43 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 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: i915_module.c,v 1.19 2022/07/17 14:10:43 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_sysctl.h> 44 45 #include "i915_drv.h" 46 #include "i915_globals.h" 47 #include "gt/intel_rps.h" 48 49 MODULE(MODULE_CLASS_DRIVER, i915drmkms, "acpivga,drmkms,drmkms_pci"); /* XXX drmkms_i2c */ 50 51 #ifdef _MODULE 52 #include "ioconf.c" 53 #endif 54 55 struct drm_sysctl_def i915_def = DRM_SYSCTL_INIT(); 56 57 /* XXX use link sets for DEFINE_SPINLOCK */ 58 extern spinlock_t i915_sw_fence_lock; 59 extern spinlock_t *const i915_schedule_lock; 60 61 static int 62 i915drmkms_init(void) 63 { 64 int error; 65 66 error = drm_guarantee_initialized(); 67 if (error) 68 return error; 69 70 /* XXX errno Linux->NetBSD */ 71 error = -i915_globals_init(); 72 if (error) 73 return error; 74 75 drm_sysctl_init(&i915_def); 76 spin_lock_init(&mchdev_lock); 77 spin_lock_init(&i915_sw_fence_lock); 78 spin_lock_init(i915_schedule_lock); 79 80 return 0; 81 } 82 83 int i915drmkms_guarantee_initialized(void); /* XXX */ 84 int 85 i915drmkms_guarantee_initialized(void) 86 { 87 #ifdef _MODULE 88 return 0; 89 #else 90 static ONCE_DECL(i915drmkms_init_once); 91 92 return RUN_ONCE(&i915drmkms_init_once, &i915drmkms_init); 93 #endif 94 } 95 96 static void 97 i915drmkms_fini(void) 98 { 99 100 spin_lock_destroy(i915_schedule_lock); 101 spin_lock_destroy(&i915_sw_fence_lock); 102 spin_lock_destroy(&mchdev_lock); 103 drm_sysctl_fini(&i915_def); 104 105 i915_globals_exit(); 106 } 107 108 static int 109 i915drmkms_modcmd(modcmd_t cmd, void *arg __unused) 110 { 111 int error; 112 113 switch (cmd) { 114 case MODULE_CMD_INIT: 115 /* XXX Kludge it up... Must happen before attachment. */ 116 #ifdef _MODULE 117 error = i915drmkms_init(); 118 #else 119 error = i915drmkms_guarantee_initialized(); 120 #endif 121 if (error) { 122 aprint_error("i915drmkms: failed to initialize: %d\n", 123 error); 124 return error; 125 } 126 #ifdef _MODULE 127 error = config_init_component(cfdriver_ioconf_i915drmkms, 128 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 129 if (error) { 130 aprint_error("i915drmkms: failed to init component" 131 ": %d\n", error); 132 i915drmkms_fini(); 133 return error; 134 } 135 #endif 136 return 0; 137 138 case MODULE_CMD_FINI: 139 #ifdef _MODULE 140 error = config_fini_component(cfdriver_ioconf_i915drmkms, 141 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 142 if (error) { 143 aprint_error("i915drmkms: failed to fini component" 144 ": %d\n", error); 145 return error; 146 } 147 #endif 148 i915drmkms_fini(); 149 return 0; 150 151 default: 152 return ENOTTY; 153 } 154 } 155