1 /* $NetBSD: i915_module.c,v 1.8 2018/08/28 03:35:08 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 1.8 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 "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 int error; 64 65 error = drm_guarantee_initialized(); 66 if (error) 67 return error; 68 69 i915_drm_driver->num_ioctls = i915_max_ioctl; 70 i915_drm_driver->driver_features |= DRIVER_MODESET; 71 i915_drm_driver->driver_features &= ~DRIVER_USE_AGP; 72 73 drm_sysctl_init(&i915_def); 74 spin_lock_init(&mchdev_lock); 75 76 return 0; 77 } 78 79 int i915drmkms_guarantee_initialized(void); /* XXX */ 80 int 81 i915drmkms_guarantee_initialized(void) 82 { 83 #ifdef _MODULE 84 return 0; 85 #else 86 static ONCE_DECL(i915drmkms_init_once); 87 88 return RUN_ONCE(&i915drmkms_init_once, &i915drmkms_init); 89 #endif 90 } 91 92 static void 93 i915drmkms_fini(void) 94 { 95 96 spin_lock_destroy(&mchdev_lock); 97 drm_sysctl_fini(&i915_def); 98 } 99 100 static int 101 i915drmkms_modcmd(modcmd_t cmd, void *arg __unused) 102 { 103 int error; 104 105 switch (cmd) { 106 case MODULE_CMD_INIT: 107 /* XXX Kludge it up... Must happen before attachment. */ 108 #ifdef _MODULE 109 error = i915drmkms_init(); 110 #else 111 error = i915drmkms_guarantee_initialized(); 112 #endif 113 if (error) { 114 aprint_error("i915drmkms: failed to initialize: %d\n", 115 error); 116 return error; 117 } 118 #ifdef _MODULE 119 error = config_init_component(cfdriver_ioconf_i915drmkms, 120 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 121 if (error) { 122 aprint_error("i915drmkms: failed to init component" 123 ": %d\n", error); 124 i915drmkms_fini(); 125 return error; 126 } 127 #endif 128 return 0; 129 130 case MODULE_CMD_FINI: 131 #ifdef _MODULE 132 error = config_fini_component(cfdriver_ioconf_i915drmkms, 133 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms); 134 if (error) { 135 aprint_error("i915drmkms: failed to fini component" 136 ": %d\n", error); 137 return error; 138 } 139 #endif 140 i915drmkms_fini(); 141 return 0; 142 143 default: 144 return ENOTTY; 145 } 146 } 147