usr/src/uts/common/io/drm/drm_sunmod.h

   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 /*
  28  * Common misc module interfaces of DRM under Solaris
  29  */
  30
  31 /*
  32  * I915 DRM Driver for Solaris
  33  *
  34  * This driver provides the hardware 3D acceleration support for Intel
  35  * integrated video devices (e.g. i8xx/i915/i945 series chipsets), under the
  36  * DRI (Direct Rendering Infrastructure). DRM (Direct Rendering Manager) here
  37  * means the kernel device driver in DRI.
  38  *
  39  * I915 driver is a device dependent driver only, it depends on a misc module
  40  * named drm for generic DRM operations.
  41  *
  42  * This driver also calls into gfx and agpmaster misc modules respectively for
  43  * generic graphics operations and AGP master device support.
  44  */
  45
  46 #ifndef _SYS_DRM_SUNMOD_H_
  47 #define _SYS_DRM_SUNMOD_H_
  48
  49 #ifdef  __cplusplus
  50 extern "C" {
  51 #endif
  52
  53 #include <sys/types.h>
  54 #include <sys/errno.h>
  55 #include <sys/conf.h>
  56 #include <sys/kmem.h>
  57 #include <sys/visual_io.h>
  58 #include <sys/fbio.h>
  59 #include <sys/ddi.h>
  60 #include <sys/sunddi.h>
  61 #include <sys/stat.h>
  62 #include <sys/file.h>
  63 #include <sys/open.h>
  64 #include <sys/modctl.h>
  65 #include <sys/vgareg.h>
  66 #include <sys/vgasubr.h>
  67 #include <sys/pci.h>
  68 #include <sys/kd.h>
  69 #include <sys/ddi_impldefs.h>
  70 #include <sys/sunldi.h>
  71 #include <sys/mkdev.h>
  72 #include <sys/gfx_private.h>
  73 #include <sys/agpgart.h>
  74 #include <sys/agp/agpdefs.h>
  75 #include <sys/agp/agpmaster_io.h>
  76 #include "drmP.h"
  77 #include <sys/modctl.h>
  78
  79 /*
  80  * dev_t of this driver looks consists of:
  81  *
  82  * major number with NBITSMAJOR bits
  83  * instance node number with NBITSINST bits
  84  * minor node number with NBITSMINOR - NBITSINST bits
  85  *
  86  * Each instance has at most 2^(NBITSMINOR - NBITSINST) minor nodes, the first
  87  * three are:
  88  * 0: gfx<instance number>, graphics common node
  89  * 1: agpmaster<instance number>, agpmaster node
  90  * 2: drm<instance number>, drm node
  91  */
  92 #define GFX_MINOR               0
  93 #define AGPMASTER_MINOR         1
  94 #define DRM_MINOR               2
  95 #define DRM_MIN_CLONEMINOR      3
  96
  97 /*
  98  * Number of bits occupied by instance number in dev_t, currently maximum 8
  99  * instances are supported.
 100  */
 101 #define NBITSINST               3
 102
 103 /* Number of bits occupied in dev_t by minor node */
 104 #define NBITSMNODE              (18 - NBITSINST)
 105
 106 /*
 107  * DRM use a "cloning" minor node mechanism to release lock on every close(2),
 108  * thus there will be a minor node for every open(2) operation. Here we give
 109  * the maximum DRM cloning minor node number.
 110  */
 111 #define MAX_CLONE_MINOR         (1 << (NBITSMNODE) - 1)
 112 #define DEV2MINOR(dev)          (getminor(dev) & ((1 << (NBITSMNODE)) - 1))
 113 #define DEV2INST(dev)           (getminor(dev) >> NBITSMNODE)
 114 #define INST2NODE0(inst)        ((inst) << NBITSMNODE)
 115 #define INST2NODE1(inst)        (((inst) << NBITSMNODE) + AGPMASTER_MINOR)
 116 #define INST2NODE2(inst)        (((inst) << NBITSMNODE) + DRM_MINOR)
 117
 118 /* graphics name for the common graphics minor node */
 119 #define GFX_NAME                "gfx"
 120
 121
 122 /*
 123  * softstate for DRM module
 124  */
 125 typedef struct drm_instance_state {
 126         kmutex_t                mis_lock;
 127         kmutex_t                dis_ctxlock;
 128         major_t                 mis_major;
 129         dev_info_t              *mis_dip;
 130         drm_device_t    *mis_devp;
 131         ddi_acc_handle_t        mis_cfg_hdl;
 132         agp_master_softc_t      *mis_agpm;      /* agpmaster softstate ptr */
 133         gfxp_vgatext_softc_ptr_t        mis_gfxp;       /* gfx softstate */
 134 } drm_inst_state_t;
 135
 136
 137 struct drm_inst_state_list {
 138         drm_inst_state_t        disl_state;
 139         struct drm_inst_state_list *disl_next;
 140
 141 };
 142 typedef struct drm_inst_state_list drm_inst_list_t;
 143
 144
 145 /* Identifier of this driver */
 146 static struct vis_identifier text_ident = { "SUNWdrm" };
 147 static int drm_sun_open(dev_t *, int, int, cred_t *);
 148 static int drm_sun_close(dev_t, int, int, cred_t *);
 149 static int drm_sun_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
 150 static int drm_sun_devmap(dev_t, devmap_cookie_t,
 151         offset_t, size_t, size_t *, uint_t);
 152
 153 #ifdef  __cplusplus
 154 }
 155 #endif
 156
 157 #endif  /* _SYS_DRM_SUNMOD_H_ */