1 /* $NetBSD: radeon_module.c,v 1.5 2018/08/28 03:35:08 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 1.5 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 "radeon_drv.h" 46 47 MODULE(MODULE_CLASS_DRIVER, radeon, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */ 48 49 #ifdef _MODULE 50 #include "ioconf.c" 51 #endif 52 53 /* XXX Kludge to get these from radeon_drv.c. */ 54 extern struct drm_driver *const radeon_drm_driver; 55 extern int radeon_max_kms_ioctl; 56 57 struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT(); 58 59 static int 60 radeon_init(void) 61 { 62 int error; 63 64 error = drm_guarantee_initialized(); 65 if (error) 66 return error; 67 68 radeon_drm_driver->num_ioctls = radeon_max_kms_ioctl; 69 radeon_drm_driver->driver_features |= DRIVER_MODESET; 70 71 drm_sysctl_init(&radeon_def); 72 73 return 0; 74 } 75 76 int radeon_guarantee_initialized(void); /* XXX */ 77 int 78 radeon_guarantee_initialized(void) 79 { 80 #ifdef _MODULE 81 return 0; 82 #else 83 static ONCE_DECL(radeon_init_once); 84 85 return RUN_ONCE(&radeon_init_once, &radeon_init); 86 #endif 87 } 88 89 static void 90 radeon_fini(void) 91 { 92 93 drm_sysctl_fini(&radeon_def); 94 } 95 96 static int 97 radeon_modcmd(modcmd_t cmd, void *arg __unused) 98 { 99 int error; 100 101 switch (cmd) { 102 case MODULE_CMD_INIT: 103 /* XXX Kludge it up... Must happen before attachment. */ 104 #ifdef _MODULE 105 error = radeon_init(); 106 #else 107 error = radeon_guarantee_initialized(); 108 #endif 109 if (error) { 110 aprint_error("radeon: failed to initialize: %d\n", 111 error); 112 return error; 113 } 114 #ifdef _MODULE 115 error = config_init_component(cfdriver_ioconf_radeon, 116 cfattach_ioconf_radeon, cfdata_ioconf_radeon); 117 if (error) { 118 aprint_error("radeon: failed to init component" 119 ": %d\n", error); 120 radeon_fini(); 121 return error; 122 } 123 #endif 124 return 0; 125 126 case MODULE_CMD_FINI: 127 #ifdef _MODULE 128 error = config_fini_component(cfdriver_ioconf_radeon, 129 cfattach_ioconf_radeon, cfdata_ioconf_radeon); 130 if (error) { 131 aprint_error("radeon: failed to fini component" 132 ": %d\n", error); 133 return error; 134 } 135 #endif 136 radeon_fini(); 137 return 0; 138 139 default: 140 return ENOTTY; 141 } 142 } 143