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via_drv.c revision 1.1.1.4 
      1 /*	$NetBSD: via_drv.c,v 1.1.1.4 2021/12/18 20:15:54 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
      5  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sub license,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     21  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     24  * DEALINGS IN THE SOFTWARE.
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: via_drv.c,v 1.1.1.4 2021/12/18 20:15:54 riastradh Exp $");
     29 
     30 #include <linux/module.h>
     31 #include <linux/pci.h>
     32 
     33 #include <drm/drm_drv.h>
     34 #include <drm/drm_file.h>
     35 #include <drm/drm_pciids.h>
     36 #include <drm/via_drm.h>
     37 
     38 #include "via_drv.h"
     39 
     40 
     41 static int via_driver_open(struct drm_device *dev, struct drm_file *file)
     42 {
     43 	struct via_file_private *file_priv;
     44 
     45 	DRM_DEBUG_DRIVER("\n");
     46 	file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
     47 	if (!file_priv)
     48 		return -ENOMEM;
     49 
     50 	file->driver_priv = file_priv;
     51 
     52 	INIT_LIST_HEAD(&file_priv->obj_list);
     53 
     54 	return 0;
     55 }
     56 
     57 static void via_driver_postclose(struct drm_device *dev, struct drm_file *file)
     58 {
     59 	struct via_file_private *file_priv = file->driver_priv;
     60 
     61 	kfree(file_priv);
     62 }
     63 
     64 static struct pci_device_id pciidlist[] = {
     65 	viadrv_PCI_IDS
     66 };
     67 
     68 static const struct file_operations via_driver_fops = {
     69 	.owner = THIS_MODULE,
     70 	.open = drm_open,
     71 	.release = drm_release,
     72 	.unlocked_ioctl = drm_ioctl,
     73 	.mmap = drm_legacy_mmap,
     74 	.poll = drm_poll,
     75 	.compat_ioctl = drm_compat_ioctl,
     76 	.llseek = noop_llseek,
     77 };
     78 
     79 static struct drm_driver driver = {
     80 	.driver_features =
     81 	    DRIVER_USE_AGP | DRIVER_HAVE_IRQ | DRIVER_LEGACY,
     82 	.load = via_driver_load,
     83 	.unload = via_driver_unload,
     84 	.open = via_driver_open,
     85 	.preclose = via_reclaim_buffers_locked,
     86 	.postclose = via_driver_postclose,
     87 	.context_dtor = via_final_context,
     88 	.get_vblank_counter = via_get_vblank_counter,
     89 	.enable_vblank = via_enable_vblank,
     90 	.disable_vblank = via_disable_vblank,
     91 	.irq_preinstall = via_driver_irq_preinstall,
     92 	.irq_postinstall = via_driver_irq_postinstall,
     93 	.irq_uninstall = via_driver_irq_uninstall,
     94 	.irq_handler = via_driver_irq_handler,
     95 	.dma_quiescent = via_driver_dma_quiescent,
     96 	.lastclose = via_lastclose,
     97 	.ioctls = via_ioctls,
     98 	.fops = &via_driver_fops,
     99 	.name = DRIVER_NAME,
    100 	.desc = DRIVER_DESC,
    101 	.date = DRIVER_DATE,
    102 	.major = DRIVER_MAJOR,
    103 	.minor = DRIVER_MINOR,
    104 	.patchlevel = DRIVER_PATCHLEVEL,
    105 };
    106 
    107 static struct pci_driver via_pci_driver = {
    108 	.name = DRIVER_NAME,
    109 	.id_table = pciidlist,
    110 };
    111 
    112 static int __init via_init(void)
    113 {
    114 	driver.num_ioctls = via_max_ioctl;
    115 	via_init_command_verifier();
    116 	return drm_legacy_pci_init(&driver, &via_pci_driver);
    117 }
    118 
    119 static void __exit via_exit(void)
    120 {
    121 	drm_legacy_pci_exit(&driver, &via_pci_driver);
    122 }
    123 
    124 module_init(via_init);
    125 module_exit(via_exit);
    126 
    127 MODULE_AUTHOR(DRIVER_AUTHOR);
    128 MODULE_DESCRIPTION(DRIVER_DESC);
    129 MODULE_LICENSE("GPL and additional rights");
    130