1 /* $NetBSD: i915_module.c,v 1.5 2014/11/12 03:14:00 christos 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 1.5 2014/11/12 03:14:00 christos 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 "i915_drv.h" 46 47 MODULE(MODULE_CLASS_DRIVER, i915drmkms, "drmkms,drmkms_pci"); /* XXX drmkms_i2c */ 48 49 #ifdef _MODULE 50 #include "ioconf.c" 51 #endif 52 53 /* XXX Kludge to get these from i915_drv.c. */ 54 extern struct drm_driver *const i915_drm_driver; 55 extern const struct pci_device_id *const i915_device_ids; 56 extern const size_t i915_n_device_ids; 57 58 struct drm_sysctl_def i915_def = DRM_SYSCTL_INIT(); 59 60 static int 61 i915drmkms_init(void) 62 { 63 extern int drm_guarantee_initialized(void); 64 int error; 65 66 error = drm_guarantee_initialized(); 67 if (error) 68 return error; 69 70 i915_drm_driver->num_ioctls = i915_max_ioctl; 71 i915_drm_driver->driver_features |= DRIVER_MODESET; 72 i915_drm_driver->driver_features &= ~DRIVER_USE_AGP; 73 74 error = drm_pci_init(i915_drm_driver, NULL); 75 if (error) { 76 aprint_error("i915drmkms: failed to init pci: %d\n", 77 error); 78 return error; 79 } 80 drm_sysctl_init(&i915_def); 81 82 return 0; 83 } 84 85 int i915drmkms_guarantee_initialized(void); /* XXX */ 86 int 87 i915drmkms_guarantee_initialized(void) 88 { 89 #ifdef _MODULE 90 return 0; 91 #else 92 static ONCE_DECL(i915drmkms_init_once); 93 94 return RUN_ONCE(&i915drmkms_init_once, &i915drmkms_init); 95 #endif 96 } 97 98 static void 99 i915drmkms_fini(void) 100 { 101 102 drm_pci_exit(i915_drm_driver, NULL); 103 drm_sysctl_fini(&i915_def); 104 } 105 106 static int 107 i915drmkms_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 = i915drmkms_init(); 116 #else 117 error = i915drmkms_guarantee_initialized(); 118 #endif 119 if (error) { 120 aprint_error("i915drmkms: failed to initialize: %d\n", 121 error); 122 return error; 123 } 124 #ifdef _MODULE 125 error = config_init_component(cfdriver_ioconf_i915drmkms, 126 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 127 if (error) { 128 aprint_error("i915drmkms: failed to init component" 129 ": %d\n", error); 130 i915drmkms_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_i915drmkms, 139 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 140 if (error) { 141 aprint_error("i915drmkms: failed to fini component" 142 ": %d\n", error); 143 return error; 144 } 145 #endif 146 i915drmkms_fini(); 147 return 0; 148 149 default: 150 return ENOTTY; 151 } 152 } 153