[SERIAL] Clean up and fix tty transmission start/stoping
[linux-2.6] / drivers / char / drm / mga_warp.c
1 /* mga_warp.c -- Matrox G200/G400 WARP engine management -*- linux-c -*-
2  * Created: Thu Jan 11 21:29:32 2001 by gareth@valinux.com
3  *
4  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
5  * 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, sublicense,
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 next
15  * paragraph) shall be included in all copies or substantial portions of the
16  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
21  * VA LINUX SYSTEMS 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
24  * OTHER DEALINGS IN THE SOFTWARE.
25  *
26  * Authors:
27  *    Gareth Hughes <gareth@valinux.com>
28  */
29
30 #include "drmP.h"
31 #include "drm.h"
32 #include "mga_drm.h"
33 #include "mga_drv.h"
34 #include "mga_ucode.h"
35
36
37 #define MGA_WARP_CODE_ALIGN             256             /* in bytes */
38
39 #define WARP_UCODE_SIZE( which )                                        \
40         ((sizeof(which) / MGA_WARP_CODE_ALIGN + 1) * MGA_WARP_CODE_ALIGN)
41
42 #define WARP_UCODE_INSTALL( which, where )                              \
43 do {                                                                    \
44         DRM_DEBUG( " pcbase = 0x%08lx  vcbase = %p\n", pcbase, vcbase );\
45         dev_priv->warp_pipe_phys[where] = pcbase;                       \
46         memcpy( vcbase, which, sizeof(which) );                         \
47         pcbase += WARP_UCODE_SIZE( which );                             \
48         vcbase += WARP_UCODE_SIZE( which );                             \
49 } while (0)
50
51 static const unsigned int mga_warp_g400_microcode_size =
52                (WARP_UCODE_SIZE(warp_g400_tgz) +
53                 WARP_UCODE_SIZE(warp_g400_tgza) +
54                 WARP_UCODE_SIZE(warp_g400_tgzaf) +
55                 WARP_UCODE_SIZE(warp_g400_tgzf) +
56                 WARP_UCODE_SIZE(warp_g400_tgzs) +
57                 WARP_UCODE_SIZE(warp_g400_tgzsa) +
58                 WARP_UCODE_SIZE(warp_g400_tgzsaf) +
59                 WARP_UCODE_SIZE(warp_g400_tgzsf) +
60                 WARP_UCODE_SIZE(warp_g400_t2gz) +
61                 WARP_UCODE_SIZE(warp_g400_t2gza) +
62                 WARP_UCODE_SIZE(warp_g400_t2gzaf) +
63                 WARP_UCODE_SIZE(warp_g400_t2gzf) +
64                 WARP_UCODE_SIZE(warp_g400_t2gzs) +
65                 WARP_UCODE_SIZE(warp_g400_t2gzsa) +
66                 WARP_UCODE_SIZE(warp_g400_t2gzsaf) +
67                 WARP_UCODE_SIZE(warp_g400_t2gzsf));
68
69 static const unsigned int mga_warp_g200_microcode_size =
70                (WARP_UCODE_SIZE(warp_g200_tgz) +
71                 WARP_UCODE_SIZE(warp_g200_tgza) +
72                 WARP_UCODE_SIZE(warp_g200_tgzaf) +
73                 WARP_UCODE_SIZE(warp_g200_tgzf) +
74                 WARP_UCODE_SIZE(warp_g200_tgzs) +
75                 WARP_UCODE_SIZE(warp_g200_tgzsa) +
76                 WARP_UCODE_SIZE(warp_g200_tgzsaf) +
77                 WARP_UCODE_SIZE(warp_g200_tgzsf));
78
79
80 unsigned int mga_warp_microcode_size(const drm_mga_private_t * dev_priv)
81 {
82         switch (dev_priv->chipset) {
83         case MGA_CARD_TYPE_G400:
84         case MGA_CARD_TYPE_G550:
85                 return PAGE_ALIGN(mga_warp_g400_microcode_size);
86         case MGA_CARD_TYPE_G200:
87                 return PAGE_ALIGN(mga_warp_g200_microcode_size);
88         default:
89                 return 0;
90         }
91 }
92
93 static int mga_warp_install_g400_microcode( drm_mga_private_t *dev_priv )
94 {
95         unsigned char *vcbase = dev_priv->warp->handle;
96         unsigned long pcbase = dev_priv->warp->offset;
97
98         memset( dev_priv->warp_pipe_phys, 0,
99                 sizeof(dev_priv->warp_pipe_phys) );
100
101         WARP_UCODE_INSTALL( warp_g400_tgz,      MGA_WARP_TGZ );
102         WARP_UCODE_INSTALL( warp_g400_tgzf,     MGA_WARP_TGZF );
103         WARP_UCODE_INSTALL( warp_g400_tgza,     MGA_WARP_TGZA );
104         WARP_UCODE_INSTALL( warp_g400_tgzaf,    MGA_WARP_TGZAF );
105         WARP_UCODE_INSTALL( warp_g400_tgzs,     MGA_WARP_TGZS );
106         WARP_UCODE_INSTALL( warp_g400_tgzsf,    MGA_WARP_TGZSF );
107         WARP_UCODE_INSTALL( warp_g400_tgzsa,    MGA_WARP_TGZSA );
108         WARP_UCODE_INSTALL( warp_g400_tgzsaf,   MGA_WARP_TGZSAF );
109
110         WARP_UCODE_INSTALL( warp_g400_t2gz,     MGA_WARP_T2GZ );
111         WARP_UCODE_INSTALL( warp_g400_t2gzf,    MGA_WARP_T2GZF );
112         WARP_UCODE_INSTALL( warp_g400_t2gza,    MGA_WARP_T2GZA );
113         WARP_UCODE_INSTALL( warp_g400_t2gzaf,   MGA_WARP_T2GZAF );
114         WARP_UCODE_INSTALL( warp_g400_t2gzs,    MGA_WARP_T2GZS );
115         WARP_UCODE_INSTALL( warp_g400_t2gzsf,   MGA_WARP_T2GZSF );
116         WARP_UCODE_INSTALL( warp_g400_t2gzsa,   MGA_WARP_T2GZSA );
117         WARP_UCODE_INSTALL( warp_g400_t2gzsaf,  MGA_WARP_T2GZSAF );
118
119         return 0;
120 }
121
122 static int mga_warp_install_g200_microcode( drm_mga_private_t *dev_priv )
123 {
124         unsigned char *vcbase = dev_priv->warp->handle;
125         unsigned long pcbase = dev_priv->warp->offset;
126
127         memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
128
129         WARP_UCODE_INSTALL(warp_g200_tgz, MGA_WARP_TGZ);
130         WARP_UCODE_INSTALL(warp_g200_tgzf, MGA_WARP_TGZF);
131         WARP_UCODE_INSTALL(warp_g200_tgza, MGA_WARP_TGZA);
132         WARP_UCODE_INSTALL(warp_g200_tgzaf, MGA_WARP_TGZAF);
133         WARP_UCODE_INSTALL(warp_g200_tgzs, MGA_WARP_TGZS);
134         WARP_UCODE_INSTALL(warp_g200_tgzsf, MGA_WARP_TGZSF);
135         WARP_UCODE_INSTALL(warp_g200_tgzsa, MGA_WARP_TGZSA);
136         WARP_UCODE_INSTALL(warp_g200_tgzsaf, MGA_WARP_TGZSAF);
137
138         return 0;
139 }
140
141 int mga_warp_install_microcode( drm_mga_private_t *dev_priv )
142 {
143         const unsigned int size = mga_warp_microcode_size(dev_priv);
144
145         DRM_DEBUG("MGA ucode size = %d bytes\n", size);
146         if (size > dev_priv->warp->size) {
147                 DRM_ERROR("microcode too large! (%u > %lu)\n",
148                           size, dev_priv->warp->size);
149                 return DRM_ERR(ENOMEM);
150         }
151
152         switch (dev_priv->chipset) {
153         case MGA_CARD_TYPE_G400:
154         case MGA_CARD_TYPE_G550:
155                 return mga_warp_install_g400_microcode(dev_priv);
156         case MGA_CARD_TYPE_G200:
157                 return mga_warp_install_g200_microcode( dev_priv );
158         default:
159                 return DRM_ERR(EINVAL);
160         }
161 }
162
163 #define WMISC_EXPECTED          (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
164
165 int mga_warp_init( drm_mga_private_t *dev_priv )
166 {
167         u32 wmisc;
168
169         /* FIXME: Get rid of these damned magic numbers...
170          */
171         switch ( dev_priv->chipset ) {
172         case MGA_CARD_TYPE_G400:
173         case MGA_CARD_TYPE_G550:
174                 MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
175                 MGA_WRITE(MGA_WGETMSB, 0x00000E00);
176                 MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
177                 MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
178                 break;
179         case MGA_CARD_TYPE_G200:
180                 MGA_WRITE( MGA_WIADDR, MGA_WMODE_SUSPEND );
181                 MGA_WRITE( MGA_WGETMSB, 0x1606 );
182                 MGA_WRITE( MGA_WVRTXSZ, 7 );
183                 break;
184         default:
185                 return DRM_ERR(EINVAL);
186         }
187
188         MGA_WRITE( MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
189                                MGA_WMASTER_ENABLE |
190                                MGA_WCACHEFLUSH_ENABLE) );
191         wmisc = MGA_READ( MGA_WMISC );
192         if ( wmisc != WMISC_EXPECTED ) {
193                 DRM_ERROR( "WARP engine config failed! 0x%x != 0x%x\n",
194                            wmisc, WMISC_EXPECTED );
195                 return DRM_ERR(EINVAL);
196         }
197
198         return 0;
199 }