1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*
30 * Common misc module interfaces of DRM under Solaris
31 */
32
33/*
34 * I915 DRM Driver for Solaris
35 *
36 * This driver provides the hardware 3D acceleration support for Intel
37 * integrated video devices (e.g. i8xx/i915/i945 series chipsets), under the
38 * DRI (Direct Rendering Infrastructure). DRM (Direct Rendering Manager) here
39 * means the kernel device driver in DRI.
40 *
41 * I915 driver is a device dependent driver only, it depends on a misc module
42 * named drm for generic DRM operations.
43 *
44 * This driver also calls into gfx and agpmaster misc modules respectively for
45 * generic graphics operations and AGP master device support.
46 */
47
48#ifndef	_SYS_DRM_SUNMOD_H_
49#define	_SYS_DRM_SUNMOD_H_
50
51#ifdef	__cplusplus
52extern "C" {
53#endif
54
55#include <sys/types.h>
56#include <sys/errno.h>
57#include <sys/conf.h>
58#include <sys/kmem.h>
59#include <sys/visual_io.h>
60#include <sys/font.h>
61#include <sys/fbio.h>
62#include <sys/ddi.h>
63#include <sys/sunddi.h>
64#include <sys/stat.h>
65#include <sys/file.h>
66#include <sys/open.h>
67#include <sys/modctl.h>
68#include <sys/vgareg.h>
69#include <sys/vgasubr.h>
70#include <sys/pci.h>
71#include <sys/kd.h>
72#include <sys/ddi_impldefs.h>
73#include <sys/sunldi.h>
74#include <sys/mkdev.h>
75#include <gfx_private.h>
76#include <sys/agpgart.h>
77#include <sys/agp/agpdefs.h>
78#include <sys/agp/agpmaster_io.h>
79#include "drmP.h"
80#include <sys/modctl.h>
81
82/*
83 * dev_t of this driver looks consists of:
84 *
85 * major number with NBITSMAJOR bits
86 * instance node number with NBITSINST bits
87 * minor node number with NBITSMINOR - NBITSINST bits
88 *
89 * Each instance has at most 2^(NBITSMINOR - NBITSINST) minor nodes, the first
90 * three are:
91 * 0: gfx<instance number>, graphics common node
92 * 1: agpmaster<instance number>, agpmaster node
93 * 2: drm<instance number>, drm node
94 */
95#define	GFX_MINOR		0
96#define	AGPMASTER_MINOR		1
97#define	DRM_MINOR		2
98#define	DRM_MIN_CLONEMINOR	3
99
100/*
101 * Number of bits occupied by instance number in dev_t, currently maximum 8
102 * instances are supported.
103 */
104#define	NBITSINST		3
105
106/* Number of bits occupied in dev_t by minor node */
107#define	NBITSMNODE		(18 - NBITSINST)
108
109/*
110 * DRM use a "cloning" minor node mechanism to release lock on every close(2),
111 * thus there will be a minor node for every open(2) operation. Here we give
112 * the maximum DRM cloning minor node number.
113 */
114#define	MAX_CLONE_MINOR		(1 << (NBITSMNODE) - 1)
115#define	DEV2MINOR(dev)		(getminor(dev) & ((1 << (NBITSMNODE)) - 1))
116#define	DEV2INST(dev)		(getminor(dev) >> NBITSMNODE)
117#define	INST2NODE0(inst)	((inst) << NBITSMNODE)
118#define	INST2NODE1(inst)	(((inst) << NBITSMNODE) + AGPMASTER_MINOR)
119#define	INST2NODE2(inst)	(((inst) << NBITSMNODE) + DRM_MINOR)
120
121/* graphics name for the common graphics minor node */
122#define	GFX_NAME		"gfx"
123
124
125/*
126 * softstate for DRM module
127 */
128typedef struct drm_instance_state {
129	kmutex_t		mis_lock;
130	kmutex_t		dis_ctxlock;
131	major_t			mis_major;
132	dev_info_t		*mis_dip;
133	drm_device_t	*mis_devp;
134	ddi_acc_handle_t	mis_cfg_hdl;
135	agp_master_softc_t	*mis_agpm;	/* agpmaster softstate ptr */
136	gfxp_vgatext_softc_ptr_t	mis_gfxp;	/* gfx softstate */
137} drm_inst_state_t;
138
139
140struct drm_inst_state_list {
141	drm_inst_state_t	disl_state;
142	struct drm_inst_state_list *disl_next;
143
144};
145typedef struct drm_inst_state_list drm_inst_list_t;
146
147
148/* Identifier of this driver */
149static struct vis_identifier text_ident = { "SUNWdrm" };
150static int drm_sun_open(dev_t *, int, int, cred_t *);
151static int drm_sun_close(dev_t, int, int, cred_t *);
152static int drm_sun_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
153static int drm_sun_devmap(dev_t, devmap_cookie_t,
154	offset_t, size_t, size_t *, uint_t);
155
156#ifdef	__cplusplus
157}
158#endif
159
160#endif	/* _SYS_DRM_SUNMOD_H_ */
161