| 1 | /* $NetBSD: drm_pci_module.c,v 1.4 2015/03/06 01:24:24 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: drm_pci_module.c,v 1.4 2015/03/06 01:24:24 riastradh Exp $" ); |
| 34 | |
| 35 | #include <sys/module.h> |
| 36 | #include <sys/once.h> |
| 37 | |
| 38 | #include <drm/drmP.h> |
| 39 | |
| 40 | MODULE(MODULE_CLASS_MISC, drmkms_pci, "drmkms,pci" ); |
| 41 | |
| 42 | const struct drm_agp_hooks drmkms_pci_agp_hooks = { |
| 43 | .agph_acquire_ioctl = &drm_agp_acquire_ioctl, |
| 44 | .agph_release_ioctl = &drm_agp_release_ioctl, |
| 45 | .agph_enable_ioctl = &drm_agp_enable_ioctl, |
| 46 | .agph_info_ioctl = &drm_agp_info_ioctl, |
| 47 | .agph_alloc_ioctl = &drm_agp_alloc_ioctl, |
| 48 | .agph_free_ioctl = &drm_agp_free_ioctl, |
| 49 | .agph_bind_ioctl = &drm_agp_bind_ioctl, |
| 50 | .agph_unbind_ioctl = &drm_agp_unbind_ioctl, |
| 51 | .agph_release = &drm_agp_release, |
| 52 | .agph_clear = &drm_agp_clear, |
| 53 | }; |
| 54 | |
| 55 | static int |
| 56 | drmkms_pci_agp_init(void) |
| 57 | { |
| 58 | int error; |
| 59 | |
| 60 | error = drm_agp_register(&drmkms_pci_agp_hooks); |
| 61 | if (error) |
| 62 | return error; |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | int |
| 68 | drmkms_pci_agp_guarantee_initialized(void) |
| 69 | { |
| 70 | #ifdef _MODULE |
| 71 | return 0; |
| 72 | #else |
| 73 | static ONCE_DECL(drmkms_pci_agp_init_once); |
| 74 | |
| 75 | return RUN_ONCE(&drmkms_pci_agp_init_once, &drmkms_pci_agp_init); |
| 76 | #endif |
| 77 | } |
| 78 | |
| 79 | static void |
| 80 | drmkms_pci_agp_fini(void) |
| 81 | { |
| 82 | |
| 83 | drm_agp_deregister(&drmkms_pci_agp_hooks); |
| 84 | } |
| 85 | |
| 86 | static int |
| 87 | drmkms_pci_modcmd(modcmd_t cmd, void *arg __unused) |
| 88 | { |
| 89 | int error; |
| 90 | |
| 91 | switch (cmd) { |
| 92 | case MODULE_CMD_INIT: |
| 93 | #ifdef _MODULE |
| 94 | error = drmkms_pci_agp_init(); |
| 95 | #else |
| 96 | error = drmkms_pci_agp_guarantee_initialized(); |
| 97 | #endif |
| 98 | if (error) |
| 99 | return error; |
| 100 | return 0; |
| 101 | |
| 102 | case MODULE_CMD_FINI: |
| 103 | drmkms_pci_agp_fini(); |
| 104 | return 0; |
| 105 | |
| 106 | default: |
| 107 | return ENOTTY; |
| 108 | } |
| 109 | } |
| 110 | |