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Linux/Documentation/fb/sstfb.rst

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Diff markup

Differences between /Documentation/fb/sstfb.rst (Version linux-6.12-rc7) and /Documentation/fb/sstfb.rst (Version linux-4.4.302)


  1 =====                                             
  2 sstfb                                             
  3 =====                                             
  4                                                   
  5 Introduction                                      
  6 ============                                      
  7                                                   
  8 This is a frame buffer device driver for 3dfx'    
  9 (aka voodoo 1, aka sst1) and Voodoo² (aka Voo    
 10 video boards. It's highly experimental code, b    
 11 on my computer, with my "Maxi Gamer 3D" and "M    
 12 and with me "between chair and keyboard". Some    
 13 combinations and it seems that it works.          
 14 The main page is located at <http://sstfb.sour    
 15 you want the latest version, check out the CVS    
 16 in progress, I feel uncomfortable with releasi    
 17 not completely working...Don't worry, it's sti    
 18 (I eat my own dog food)                           
 19                                                   
 20 Please read the Bug section, and report any su    
 21 (Ghozlane Toumi <gtoumi@laposte.net>).             
 22 BTW, If you have only one monitor , and you do    
 23 with the vga passthrou cable, I can only sugge    
 24 somewhere...                                      
 25                                                   
 26                                                   
 27 Installation                                      
 28 ============                                      
 29                                                   
 30 This driver (should) work on ix86, with "late"    
 31 with x = 19) and "recent" 2.4.x kernel, as a m    
 32 It has been included in mainstream kernel sinc    
 33 You can apply the patches found in `sstfb/kern    
 34 and copy sstfb.c to linux/drivers/video/, or a    
 35 `sstfb/patch-2.{2|4}.x-sstfb-yymmdd` to your l    
 36                                                   
 37 Then configure your kernel as usual: choose "m    
 38 Graphics in section "console". Compile, instal    
 39 drop me a report :)                               
 40                                                   
 41                                                   
 42 Module Usage                                      
 43 ============                                      
 44                                                   
 45 .. warning::                                      
 46                                                   
 47        #. You should read completely this sect    
 48                                                   
 49        #. If you have only one monitor to play    
 50           module, the 3dfx takes control of th    
 51           plug the monitor to the "normal" vid    
 52           the commands, or you can blindly use    
 53           in the tools directory (See Tools).     
 54           parameter vgapass=1 when insmodding     
 55           Options)                                
 56                                                   
 57 Module insertion                                  
 58 ----------------                                  
 59                                                   
 60        #. insmod sstfb.o                          
 61                                                   
 62           you should see some strange output f    
 63           a big blue square, a green and a red    
 64           white rectangle. why? the function's    
 65           "sstfb_test()"...                       
 66           (if you don't have a second monitor,    
 67           directly to the 2D videocard to see     
 68                                                   
 69        #. con2fb /dev/fbx /dev/ttyx               
 70                                                   
 71           bind a tty to the new frame buffer.     
 72           buffer driver, the voodoo fb will li    
 73           the device will be /dev/fb0. You can    
 74           cat /proc/fb. You can find a copy of    
 75           if you don't have another fb device,    
 76           as the console subsystem automagical    
 77        #. switch to the virtual console you ju    
 78                                                   
 79 Module removal                                    
 80 --------------                                    
 81                                                   
 82        #. con2fb /dev/fbx /dev/ttyx               
 83                                                   
 84           bind the tty to the old frame buffer    
 85           (how does it work with vgacon ? shor    
 86                                                   
 87        #. rmmod sstfb                             
 88                                                   
 89                                                   
 90 Kernel/Modules Options                            
 91 ----------------------                            
 92                                                   
 93 You can pass some options to the sstfb module,    
 94 command line when the driver is compiled in:      
 95 for module : insmod sstfb.o option1=value1 opt    
 96 in kernel :  video=sstfb:option1,option2:value    
 97                                                   
 98 sstfb supports the following options:             
 99                                                   
100 =============== =============== ==============    
101 Module          Kernel          Description       
102 =============== =============== ==============    
103 vgapass=0       vganopass       Enable or disa    
104 vgapass=1       vgapass         When enabled,     
105                                 from the VGA b    
106                                                   
107                                 Default: nopas    
108                                                   
109 mem=x           mem:x           Force frame bu    
110                                 allowed values    
111                                                   
112                                 Default: 0 (=     
113                                                   
114 inverse=1       inverse         Supposed to en    
115                                 doesn't work y    
116                                                   
117 clipping=1      clipping        Enable or disa    
118 clipping=0      noclipping      With clipping     
119                                 reads and writ    
120                                                   
121                                 Default: enabl    
122                                                   
123 gfxclk=x        gfxclk:x        Force graphic     
124                                 Be careful wit    
125                                 DANGEROUS.        
126                                                   
127                                 Default: auto     
128                                                   
129                                         - 50Mh    
130                                         - 75MH    
131                                                   
132 slowpci=1       fastpci         Enable or disa    
133 slowpci=1       slowpci         Default : fast    
134                                                   
135 dev=x           dev:x           Attach the dri    
136                                 0 is the first    
137                                 lspci order)      
138 =============== =============== ==============    
139                                                   
140 Tools                                             
141 =====                                             
142                                                   
143 These tools are mostly for debugging purposes,    
144 find some of these interesting:                   
145                                                   
146 - `con2fb`, maps a tty to a fbramebuffer::        
147                                                   
148         con2fb /dev/fb1 /dev/tty5                 
149                                                   
150 - `sst_dbg_vgapass`, changes vga passthrou. Yo    
151   driver with SST_DEBUG and SST_DEBUG_IOCTL se    
152                                                   
153         sst_dbg_vgapass /dev/fb1 1 (enables vg    
154         sst_dbg_vgapass /dev/fb1 0 (disables v    
155                                                   
156 - `glide_reset`, resets the voodoo using glide    
157   use this after rmmoding sstfb, if the module    
158   reinsert.                                       
159                                                   
160 Bugs                                              
161 ====                                              
162                                                   
163 - DO NOT use glide while the sstfb module is i    
164   hang your computer.                             
165 - If you see some artefacts (pixels not cleani    
166   try turning off clipping (clipping=0), and/o    
167 - the driver don't detect the 4Mb frame buffer    
168   the 2 last Mbs wrap around. looking into tha    
169 - The driver is 16 bpp only, 24/32 won't work.    
170 - The driver is not your_favorite_toy-safe. th    
171                                                   
172         [Actually from inspection it seems to     
173                                                   
174 - When using XFree86 FBdev (X over fbdev) you     
175   patterns at the border of your windows (the     
176   byte -> basically the blue component and som    
177   to reproduce this with XFree86-3.3, but one     
178   problem with XFree86-4. Apparently recent Xf    
179   problem.                                        
180 - I didn't really test changing the palette, s    
181   things when playing with that.                  
182 - Sometimes the driver will not recognise the     
183   initialisation will fail. This is specifical    
184   voodoo 2 boards, but it should be solved in     
185   contact me.                                     
186 - The 24/32 is not likely to work anytime soon    
187   hardware does ... unusual things in 24/32 bp    
188                                                   
189 Todo                                              
190 ====                                              
191                                                   
192 - Get rid of the previous paragraph.              
193 - Buy more coffee.                                
194 - test/port to other arch.                        
195 - try to add panning using tweeks with front a    
196 - try to implement accel on voodoo2, this boar    
197   lot in 2D even if it was sold as a 3D only b    
198                                                   
199 Ghozlane Toumi <gtoumi@laposte.net>                
200                                                   
201                                                   
202 Date: 2002/05/09 20:11:45                         
203                                                   
204 http://sstfb.sourceforge.net/README               
                                                      

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