1 /* $NetBSD: vmwgfx_module.c,v 1.2 2022/07/17 15:37:10 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2022 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: vmwgfx_module.c,v 1.2 2022/07/17 15:37:10 riastradh Exp $"); 31 32 #include <sys/types.h> 33 #include <sys/module.h> 34 #ifndef _MODULE 35 #include <sys/once.h> 36 #endif 37 #include <sys/systm.h> 38 39 #include <drm/drm_device.h> 40 #include <drm/drm_drv.h> 41 #include <drm/drm_sysctl.h> 42 43 #include "vmwgfx_drv.h" 44 45 MODULE(MODULE_CLASS_DRIVER, vmwgfx, "drmkms,drmkms_pci,drmkms_ttm"); /* XXX drmkms_i2c */ 46 47 #ifdef _MODULE 48 #include "ioconf.c" 49 #endif 50 51 struct drm_sysctl_def vmwgfx_def = DRM_SYSCTL_INIT(); 52 53 static int 54 vmwgfx_init(void) 55 { 56 int error; 57 58 error = drm_guarantee_initialized(); 59 if (error) 60 return error; 61 62 drm_sysctl_init(&vmwgfx_def); 63 64 return 0; 65 } 66 67 int vmwgfx_guarantee_initialized(void); /* XXX */ 68 int 69 vmwgfx_guarantee_initialized(void) 70 { 71 #ifdef _MODULE 72 return 0; 73 #else 74 static ONCE_DECL(vmwgfx_init_once); 75 76 return RUN_ONCE(&vmwgfx_init_once, &vmwgfx_init); 77 #endif 78 } 79 80 static void 81 vmwgfx_fini(void) 82 { 83 84 drm_sysctl_fini(&vmwgfx_def); 85 } 86 87 static int 88 vmwgfx_modcmd(modcmd_t cmd, void *arg __unused) 89 { 90 int error; 91 92 switch (cmd) { 93 case MODULE_CMD_INIT: 94 /* XXX Kludge it up... Must happen before attachment. */ 95 #ifdef _MODULE 96 error = vmwgfx_init(); 97 #else 98 error = vmwgfx_guarantee_initialized(); 99 #endif 100 if (error) { 101 aprint_error("vmwgfx: failed to initialize: %d\n", 102 error); 103 return error; 104 } 105 #ifdef _MODULE 106 error = config_init_component(cfdriver_ioconf_vmwgfx, 107 cfattach_ioconf_vmwgfx, cfdata_ioconf_vmwgfx); 108 if (error) { 109 aprint_error("vmwgfx: failed to init component" 110 ": %d\n", error); 111 vmwgfx_fini(); 112 return error; 113 } 114 #endif 115 return 0; 116 117 case MODULE_CMD_FINI: 118 #ifdef _MODULE 119 error = config_fini_component(cfdriver_ioconf_vmwgfx, 120 cfattach_ioconf_vmwgfx, cfdata_ioconf_vmwgfx); 121 if (error) { 122 aprint_error("vmwgfx: failed to fini component" 123 ": %d\n", error); 124 return error; 125 } 126 #endif 127 vmwgfx_fini(); 128 return 0; 129 130 default: 131 return ENOTTY; 132 } 133 } 134