1 /* $NetBSD: via_map.c,v 1.3 2021/12/18 23:45:44 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_map.c,v 1.3 2021/12/18 23:45:44 riastradh Exp $");
29
30 #include <linux/pci.h>
31
32 #include <drm/drm_device.h>
33 #include <drm/drm_vblank.h>
34 #include <drm/via_drm.h>
35
36 #include "via_drv.h"
37
via_do_init_map(struct drm_device * dev,drm_via_init_t * init)38 static int via_do_init_map(struct drm_device *dev, drm_via_init_t *init)
39 {
40 drm_via_private_t *dev_priv = dev->dev_private;
41
42 DRM_DEBUG("\n");
43
44 dev_priv->sarea = drm_legacy_getsarea(dev);
45 if (!dev_priv->sarea) {
46 DRM_ERROR("could not find sarea!\n");
47 dev->dev_private = (void *)dev_priv;
48 via_do_cleanup_map(dev);
49 return -EINVAL;
50 }
51
52 dev_priv->fb = drm_legacy_findmap(dev, init->fb_offset);
53 if (!dev_priv->fb) {
54 DRM_ERROR("could not find framebuffer!\n");
55 dev->dev_private = (void *)dev_priv;
56 via_do_cleanup_map(dev);
57 return -EINVAL;
58 }
59 dev_priv->mmio = drm_legacy_findmap(dev, init->mmio_offset);
60 if (!dev_priv->mmio) {
61 DRM_ERROR("could not find mmio region!\n");
62 dev->dev_private = (void *)dev_priv;
63 via_do_cleanup_map(dev);
64 return -EINVAL;
65 }
66
67 dev_priv->sarea_priv =
68 (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
69 init->sarea_priv_offset);
70
71 dev_priv->agpAddr = init->agpAddr;
72
73 via_init_futex(dev_priv);
74
75 via_init_dmablit(dev);
76
77 dev->dev_private = (void *)dev_priv;
78 return 0;
79 }
80
via_do_cleanup_map(struct drm_device * dev)81 int via_do_cleanup_map(struct drm_device *dev)
82 {
83 via_dma_cleanup(dev);
84
85 return 0;
86 }
87
via_map_init(struct drm_device * dev,void * data,struct drm_file * file_priv)88 int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
89 {
90 drm_via_init_t *init = data;
91
92 DRM_DEBUG("\n");
93
94 switch (init->func) {
95 case VIA_INIT_MAP:
96 return via_do_init_map(dev, init);
97 case VIA_CLEANUP_MAP:
98 return via_do_cleanup_map(dev);
99 }
100
101 return -EINVAL;
102 }
103
via_driver_load(struct drm_device * dev,unsigned long chipset)104 int via_driver_load(struct drm_device *dev, unsigned long chipset)
105 {
106 drm_via_private_t *dev_priv;
107 int ret = 0;
108
109 dev_priv = kzalloc(sizeof(drm_via_private_t), GFP_KERNEL);
110 if (dev_priv == NULL)
111 return -ENOMEM;
112
113 idr_init(&dev_priv->object_idr);
114 dev->dev_private = (void *)dev_priv;
115
116 dev_priv->chipset = chipset;
117
118 pci_set_master(dev->pdev);
119
120 ret = drm_vblank_init(dev, 1);
121 if (ret) {
122 kfree(dev_priv);
123 return ret;
124 }
125
126 return 0;
127 }
128
via_driver_unload(struct drm_device * dev)129 void via_driver_unload(struct drm_device *dev)
130 {
131 drm_via_private_t *dev_priv = dev->dev_private;
132
133 idr_destroy(&dev_priv->object_idr);
134
135 kfree(dev_priv);
136 }
137