1 /* $NetBSD: radeon_module.c,v 1.8 2022/07/17 15:36:59 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 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: radeon_module.c,v 1.8 2022/07/17 15:36:59 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 "radeon_drv.h" 47 48 MODULE(MODULE_CLASS_DRIVER, radeon, "drmkms,drmkms_pci,drmkms_ttm"); /* XXX drmkms_i2c */ 49 50 #ifdef _MODULE 51 #include "ioconf.c" 52 #endif 53 54 /* XXX Kludge to get these from radeon_drv.c. */ 55 extern struct drm_driver *const radeon_drm_driver; 56 extern int radeon_max_kms_ioctl; 57 58 struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT(); 59 60 static int 61 radeon_init(void) 62 { 63 int error; 64 65 error = drm_guarantee_initialized(); 66 if (error) 67 return error; 68 69 radeon_drm_driver->num_ioctls = radeon_max_kms_ioctl; 70 radeon_drm_driver->driver_features |= DRIVER_MODESET; 71 72 drm_sysctl_init(&radeon_def); 73 74 return 0; 75 } 76 77 int radeon_guarantee_initialized(void); /* XXX */ 78 int 79 radeon_guarantee_initialized(void) 80 { 81 #ifdef _MODULE 82 return 0; 83 #else 84 static ONCE_DECL(radeon_init_once); 85 86 return RUN_ONCE(&radeon_init_once, &radeon_init); 87 #endif 88 } 89 90 static void 91 radeon_fini(void) 92 { 93 94 drm_sysctl_fini(&radeon_def); 95 } 96 97 static int 98 radeon_modcmd(modcmd_t cmd, void *arg __unused) 99 { 100 int error; 101 102 switch (cmd) { 103 case MODULE_CMD_INIT: 104 /* XXX Kludge it up... Must happen before attachment. */ 105 #ifdef _MODULE 106 error = radeon_init(); 107 #else 108 error = radeon_guarantee_initialized(); 109 #endif 110 if (error) { 111 aprint_error("radeon: failed to initialize: %d\n", 112 error); 113 return error; 114 } 115 #ifdef _MODULE 116 error = config_init_component(cfdriver_ioconf_radeon, 117 cfattach_ioconf_radeon, cfdata_ioconf_radeon); 118 if (error) { 119 aprint_error("radeon: failed to init component" 120 ": %d\n", error); 121 radeon_fini(); 122 return error; 123 } 124 #endif 125 return 0; 126 127 case MODULE_CMD_FINI: 128 #ifdef _MODULE 129 error = config_fini_component(cfdriver_ioconf_radeon, 130 cfattach_ioconf_radeon, cfdata_ioconf_radeon); 131 if (error) { 132 aprint_error("radeon: failed to fini component" 133 ": %d\n", error); 134 return error; 135 } 136 #endif 137 radeon_fini(); 138 return 0; 139 140 default: 141 return ENOTTY; 142 } 143 } 144