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5585ea96 | 1 | diff --git a/Documentation/fb/vesafb.txt b/Documentation/fb/vesafb.txt |
2 | index ee277dd..f768129 100644 | |
3 | --- a/Documentation/fb/vesafb.txt | |
4 | +++ b/Documentation/fb/vesafb.txt | |
5 | @@ -2,16 +2,18 @@ | |
6 | What is vesafb? | |
7 | =============== | |
8 | ||
9 | -This is a generic driver for a graphic framebuffer on intel boxes. | |
10 | +Vesafb is a generic framebuffer driver for x86 and x86_64 boxes. | |
11 | ||
12 | -The idea is simple: Turn on graphics mode at boot time with the help | |
13 | -of the BIOS, and use this as framebuffer device /dev/fb0, like the m68k | |
14 | -(and other) ports do. | |
15 | - | |
16 | -This means we decide at boot time whenever we want to run in text or | |
17 | -graphics mode. Switching mode later on (in protected mode) is | |
18 | -impossible; BIOS calls work in real mode only. VESA BIOS Extensions | |
19 | -Version 2.0 are required, because we need a linear frame buffer. | |
20 | +VESA BIOS Extensions Version 2.0 are required, because we need access to | |
21 | +a linear frame buffer. VBE 3.0 is required if you want to use modes with a | |
22 | +higher (than the standard 60Hz) refresh rate. | |
23 | + | |
24 | +The VESA framebuffer driver comes in two flavors - the standard 'vesafb' | |
25 | +and 'vesafb-tng'. Vesafb-tng is available only on 32-bit x86 due to the | |
26 | +technology it uses (vm86). Vesafb-tng has more features than vesafb | |
27 | +(adjusting the refresh rate on VBE3.0-compliant boards, switching the | |
28 | +video mode without rebooting, selecting a mode by providing its | |
29 | +modedb name, and more). | |
30 | ||
31 | Advantages: | |
32 | ||
33 | @@ -29,26 +31,35 @@ Disadvantages: | |
34 | How to use it? | |
35 | ============== | |
36 | ||
37 | -Switching modes is done using the vga=... boot parameter. Read | |
38 | -Documentation/svga.txt for details. | |
39 | - | |
40 | -You should compile in both vgacon (for text mode) and vesafb (for | |
41 | -graphics mode). Which of them takes over the console depends on | |
42 | -whenever the specified mode is text or graphics. | |
43 | - | |
44 | -The graphic modes are NOT in the list which you get if you boot with | |
45 | -vga=ask and hit return. The mode you wish to use is derived from the | |
46 | -VESA mode number. Here are those VESA mode numbers: | |
47 | +If you are running a 32-bit x86 system and you decide to use vesafb-tng, | |
48 | +you can either compile the driver into the kernel or use it as a module. | |
49 | +The graphics mode you want to use is in both cases specified using the | |
50 | +standard modedb format. | |
51 | + | |
52 | +If your system doesn't support vm86 calls, things get a little more tricky. | |
53 | +Since on such systems you can't do BIOS calls from protected mode in which | |
54 | +kernel runs, you have to decide at boot time whenever you want to run in text | |
55 | +or in graphics mode. Switching mode later on is impossible. Switching modes | |
56 | +is done using the vga=... boot parameter. Read Documentation/svga.txt for | |
57 | +details. Below is a more detailed description of what to do on systems using | |
58 | +the standard vesafb driver. | |
59 | + | |
60 | +You should compile in both vgacon (for text mode) and vesafb (for graphics | |
61 | +mode). Which of them takes over the console depends on whenever the | |
62 | +specified mode is text or graphics. | |
63 | + | |
64 | +The graphic modes are NOT in the list which you get if you boot with vga=ask | |
65 | +and hit return. The mode you wish to use is derived from the VESA mode number. | |
66 | +Here are those VESA mode numbers: | |
67 | ||
68 | | 640x480 800x600 1024x768 1280x1024 | |
69 | ----+------------------------------------- | |
70 | -256 | 0x101 0x103 0x105 0x107 | |
71 | -32k | 0x110 0x113 0x116 0x119 | |
72 | -64k | 0x111 0x114 0x117 0x11A | |
73 | -16M | 0x112 0x115 0x118 0x11B | |
74 | +256 | 0x101 0x103 0x105 0x107 | |
75 | +32k | 0x110 0x113 0x116 0x119 | |
76 | +64k | 0x111 0x114 0x117 0x11A | |
77 | +16M | 0x112 0x115 0x118 0x11B | |
78 | ||
79 | -The video mode number of the Linux kernel is the VESA mode number plus | |
80 | -0x200. | |
81 | +The video mode number of the Linux kernel is the VESA mode number plus 0x200. | |
82 | ||
83 | Linux_kernel_mode_number = VESA_mode_number + 0x200 | |
84 | ||
85 | @@ -56,15 +67,15 @@ So the table for the Kernel mode numbers | |
86 | ||
87 | | 640x480 800x600 1024x768 1280x1024 | |
88 | ----+------------------------------------- | |
89 | -256 | 0x301 0x303 0x305 0x307 | |
90 | -32k | 0x310 0x313 0x316 0x319 | |
91 | -64k | 0x311 0x314 0x317 0x31A | |
92 | -16M | 0x312 0x315 0x318 0x31B | |
93 | - | |
94 | -To enable one of those modes you have to specify "vga=ask" in the | |
95 | -lilo.conf file and rerun LILO. Then you can type in the desired | |
96 | -mode at the "vga=ask" prompt. For example if you like to use | |
97 | -1024x768x256 colors you have to say "305" at this prompt. | |
98 | +256 | 0x301 0x303 0x305 0x307 | |
99 | +32k | 0x310 0x313 0x316 0x319 | |
100 | +64k | 0x311 0x314 0x317 0x31A | |
101 | +16M | 0x312 0x315 0x318 0x31B | |
102 | + | |
103 | +To enable one of those modes you have to specify "vga=ask" in the lilo.conf | |
104 | +file and rerun LILO. Then you can type in the desired mode at the "vga=ask" | |
105 | +prompt. For example if you like to use 1024x768x256 colors you have to say | |
106 | +"305" at this prompt. | |
107 | ||
108 | If this does not work, this might be because your BIOS does not support | |
109 | linear framebuffers or because it does not support this mode at all. | |
110 | @@ -72,11 +83,12 @@ Even if your board does, it might be the | |
111 | Extensions v2.0 are required, 1.2 is NOT sufficient. You will get a | |
112 | "bad mode number" message if something goes wrong. | |
113 | ||
114 | -1. Note: LILO cannot handle hex, for booting directly with | |
115 | +1. Note: LILO cannot handle hex, for booting directly with | |
116 | "vga=mode-number" you have to transform the numbers to decimal. | |
117 | 2. Note: Some newer versions of LILO appear to work with those hex values, | |
118 | if you set the 0x in front of the numbers. | |
119 | ||
120 | + | |
121 | X11 | |
122 | === | |
123 | ||
124 | @@ -84,98 +96,164 @@ XF68_FBDev should work just fine, but it | |
125 | another (accelerated) X-Server like XF86_SVGA might or might not work. | |
126 | It depends on X-Server and graphics board. | |
127 | ||
128 | -The X-Server must restore the video mode correctly, else you end up | |
129 | +The X-Server must restore the video mode correctly, or else you end up | |
130 | with a broken console (and vesafb cannot do anything about this). | |
131 | +With vesafb-tng chances are that the console will be restored properly | |
132 | +even if the X server messes up the video mode. | |
133 | ||
134 | ||
135 | Refresh rates | |
136 | ============= | |
137 | ||
138 | -There is no way to change the vesafb video mode and/or timings after | |
139 | -booting linux. If you are not happy with the 60 Hz refresh rate, you | |
140 | -have these options: | |
141 | +With VBE3.0 compatible BIOSes and vesafb-tng it is possible to change | |
142 | +the refresh rate either at boot time (by specifying the @<rr> part of | |
143 | +the mode name) or later, using the fbset utility. | |
144 | + | |
145 | +If you want to use the default BIOS refresh rate while switching modes | |
146 | +on a running system, set pixclock to 0. | |
147 | + | |
148 | +With VBE2.0 there is no way to change the mode timings after booting | |
149 | +Linux. If you are not happy with the 60 Hz refresh rate, you have | |
150 | +these options: | |
151 | ||
152 | - * configure and load the DOS-Tools for your the graphics board (if | |
153 | - available) and boot linux with loadlin. | |
154 | + * configure and load the DOS tools for your the graphics board (if | |
155 | + available) and boot Linux with loadlin. | |
156 | * use a native driver (matroxfb/atyfb) instead if vesafb. If none | |
157 | is available, write a new one! | |
158 | - * VBE 3.0 might work too. I have neither a gfx board with VBE 3.0 | |
159 | - support nor the specs, so I have not checked this yet. | |
160 | + * use a BIOS editor to change the default refresh rate (such an | |
161 | + editor does exist at least for ATI Radeon BIOSes). | |
162 | + * if you're running a non-vm86 and VBE3.0-compatible system, you can | |
163 | + use a kernel patch (vesafb-rrc) to hard-code some mode timings in | |
164 | + the kernel and use these while setting the graphic mode at boot time. | |
165 | + | |
166 | +Note that there are some boards (nVidia 59**, 57** and newer models) | |
167 | +claiming that their Video BIOS is VBE3.0 compliant, while ignoring the | |
168 | +CRTC values provided by software such as vesafb-tng. You'll not be able | |
169 | +to change the refresh rate if you're using one of these boards. | |
170 | ||
171 | ||
172 | Configuration | |
173 | ============= | |
174 | ||
175 | -The VESA BIOS provides protected mode interface for changing | |
176 | -some parameters. vesafb can use it for palette changes and | |
177 | -to pan the display. It is turned off by default because it | |
178 | -seems not to work with some BIOS versions, but there are options | |
179 | -to turn it on. | |
180 | - | |
181 | -You can pass options to vesafb using "video=vesafb:option" on | |
182 | -the kernel command line. Multiple options should be separated | |
183 | -by comma, like this: "video=vesafb:ypan,invers" | |
184 | - | |
185 | -Accepted options: | |
186 | - | |
187 | -invers no comment... | |
188 | - | |
189 | -ypan enable display panning using the VESA protected mode | |
190 | - interface. The visible screen is just a window of the | |
191 | - video memory, console scrolling is done by changing the | |
192 | - start of the window. | |
193 | - pro: * scrolling (fullscreen) is fast, because there is | |
194 | - no need to copy around data. | |
195 | - * You'll get scrollback (the Shift-PgUp thing), | |
196 | - the video memory can be used as scrollback buffer | |
197 | - kontra: * scrolling only parts of the screen causes some | |
198 | - ugly flicker effects (boot logo flickers for | |
199 | - example). | |
200 | - | |
201 | -ywrap Same as ypan, but assumes your gfx board can wrap-around | |
202 | - the video memory (i.e. starts reading from top if it | |
203 | - reaches the end of video memory). Faster than ypan. | |
204 | - | |
205 | -redraw scroll by redrawing the affected part of the screen, this | |
206 | - is the safe (and slow) default. | |
207 | - | |
208 | - | |
209 | -vgapal Use the standard vga registers for palette changes. | |
210 | - This is the default. | |
211 | -pmipal Use the protected mode interface for palette changes. | |
212 | - | |
213 | -mtrr:n setup memory type range registers for the vesafb framebuffer | |
214 | - where n: | |
215 | - 0 - disabled (equivalent to nomtrr) (default) | |
216 | - 1 - uncachable | |
217 | - 2 - write-back | |
218 | - 3 - write-combining | |
219 | - 4 - write-through | |
220 | +The VESA BIOS provides protected mode interface for changing some parameters. | |
221 | +vesafb can use it for palette changes and to pan the display. It is turned | |
222 | +off by default because it seems not to work with some BIOS versions, but | |
223 | +there are options to turn it on. | |
224 | + | |
225 | +You can pass options to vesafb using "video=vesafb:option" on the kernel | |
226 | +command line. Multiple options should be separated by comma, like this: | |
227 | +"video=vesafb:ypan,1024x768-32@85" | |
228 | + | |
229 | +Note that vesafb-tng still uses the "video=vesafb:option" format of the | |
230 | +kernel command line video parameter. "video=vesafb-tng:xxx" is incorrect. | |
231 | + | |
232 | +Accepted options (both vesafb and vesafb-tng): | |
233 | + | |
234 | +ypan Enable display panning using the VESA protected mode interface | |
235 | + The visible screen is just a window of the video memory, | |
236 | + console scrolling is done by changing the start of the window. | |
237 | + pro: * scrolling (fullscreen) is fast, because there is | |
238 | + no need to copy around data. | |
239 | + * you'll get scrollback (the Shift-PgUp thing), | |
240 | + the video memory can be used as scrollback buffer | |
241 | + con: * scrolling only parts of the screen causes some | |
242 | + ugly flicker effects (boot logo flickers for | |
243 | + example). | |
244 | + | |
245 | +ywrap Same as ypan, but assumes your gfx board can wrap-around the video | |
246 | + memory (i.e. starts reading from top if it reaches the end of | |
247 | + video memory). Faster than ypan. | |
248 | + | |
249 | +redraw Scroll by redrawing the affected part of the screen, this is the | |
250 | + safe (and slow) default. | |
251 | + | |
252 | +vgapal Use the standard VGA registers for palette changes. | |
253 | + This is the default. | |
254 | + | |
255 | +pmipal Use the protected mode interface for palette changes. | |
256 | + | |
257 | +mtrr:n Setup memory type range registers for the vesafb framebuffer | |
258 | + where n: | |
259 | + 0 - disabled (equivalent to nomtrr) (default) | |
260 | + 1 - uncachable | |
261 | + 2 - write-back | |
262 | + 3 - write-combining | |
263 | + 4 - write-through | |
264 | ||
265 | - If you see the following in dmesg, choose the type that matches the | |
266 | - old one. In this example, use "mtrr:2". | |
267 | + If you see the following in dmesg, choose the type that matches | |
268 | + the old one. In this example, use "mtrr:2". | |
269 | ... | |
270 | mtrr: type mismatch for e0000000,8000000 old: write-back new: write-combining | |
271 | ... | |
272 | ||
273 | -nomtrr disable mtrr | |
274 | +nomtrr Do not use memory type range registers for vesafb. | |
275 | ||
276 | vremap:n | |
277 | remap 'n' MiB of video RAM. If 0 or not specified, remap memory | |
278 | - according to video mode. (2.5.66 patch/idea by Antonino Daplas | |
279 | - reversed to give override possibility (allocate more fb memory | |
280 | - than the kernel would) to 2.4 by tmb@iki.fi) | |
281 | + according to video mode. (2.5.66 patch/idea by Antonino Daplas | |
282 | + reversed to give override possibility (allocate more fb memory | |
283 | + than the kernel would) to 2.4 by tmb@iki.fi) | |
284 | ||
285 | vtotal:n | |
286 | if the video BIOS of your card incorrectly determines the total | |
287 | amount of video RAM, use this option to override the BIOS (in MiB). | |
288 | ||
289 | -Have fun! | |
290 | +Options accepted only by vesafb-tng: | |
291 | ||
292 | - Gerd | |
293 | +<mode> The mode you want to set, in the standard modedb format. Refer to | |
294 | + modedb.txt for detailed description. If you specify a mode that is | |
295 | + not supported by your board's BIOS, vesafb will attempt to set a | |
296 | + similar mode. The list of supported modes can be found in | |
297 | + /proc/fbx/modes, where x is the framebuffer number (usually 0). | |
298 | + When vesafb is compiled as a module, the mode string should be | |
299 | + provided as a value of the parameter 'mode'. | |
300 | + | |
301 | +vbemode:x | |
302 | + Force the use of VBE mode x. The mode will only be set if it's | |
303 | + found in VBE-provided list of supported modes. | |
304 | + NOTE: The mode number 'x' should be specified in VESA mode number | |
305 | + notation, not the Linux kernel one (ie. 257 instead of 769). | |
306 | + HINT: If you use this option because normal <mode> parameter does | |
307 | + not work for you and you use a X server, you'll probably want to | |
308 | + set the 'nocrtc' option to ensure that the video mode is properly | |
309 | + restored after console <-> X switches. | |
310 | + | |
311 | +nocrtc Do not use CRTC timings while setting the graphic mode. This option | |
312 | + makes sence only with VBE3.0 compliant systems. Use it if you have | |
313 | + problems with the modes set in the standard way. Note that specifying | |
314 | + this option means the refresh rate will be ignored and will stay at | |
315 | + your BIOS default (60 Hz). | |
316 | + | |
317 | +noedid Do not try to fetch and use EDID-provided modes. | |
318 | + | |
319 | +noblank Disable hardware blanking. | |
320 | + | |
321 | +gtf Force the use of VESA's GTF (Generalized Timing Formula). Specifying | |
322 | + this will cause vesafb to skip it's internal modedb and EDID-modedb | |
323 | + and jump straight to the GTF part of the code (normally used only if | |
324 | + everything else failed). This can be useful if you want to get as | |
325 | + much as possible from you graphics board but your BIOS doesn't | |
326 | + support modes with refresh rates you require. Note that you may need | |
327 | + to specify the maxhf, maxvf and maxclk parameters if they are not | |
328 | + provided by EDID. | |
329 | + | |
330 | +Additionally, the following parameters may be provided. They all override the | |
331 | +EDID-provided values and BIOS defaults. Refer to your monitor's specs to get | |
332 | +the correct values for maxhf, maxvf and maxclk for your hardware. | |
333 | + | |
334 | +maxhf:n Maximum horizontal frequency (in kHz). | |
335 | +maxvf:n Maximum vertical frequency (in Hz). | |
336 | +maxclk:n Maximum pixel clock (in MHz). | |
337 | + | |
338 | +Have fun! | |
339 | ||
340 | -- | |
341 | +Original document for the vesafb driver by | |
342 | Gerd Knorr <kraxel@goldbach.in-berlin.de> | |
343 | ||
344 | -Minor (mostly typo) changes | |
345 | -by Nico Schmoigl <schmoigl@rumms.uni-mannheim.de> | |
346 | +Minor (mostly typo) changes by | |
347 | +Nico Schmoigl <schmoigl@rumms.uni-mannheim.de> | |
348 | + | |
349 | +Extended documentation for vm86, VBE3.0 and vesafb-tng by | |
350 | +Michal Januszewski <spock@gentoo.org> | |
351 | + | |
352 | diff --git a/arch/i386/boot/video.S b/arch/i386/boot/video.S | |
353 | index 2ac40c8..335d401 100644 | |
354 | --- a/arch/i386/boot/video.S | |
355 | +++ b/arch/i386/boot/video.S | |
356 | @@ -164,10 +164,12 @@ basret: ret | |
357 | # parameters in the default 80x25 mode -- these are set directly, | |
358 | # because some very obscure BIOSes supply insane values. | |
359 | mode_params: | |
360 | +#ifdef CONFIG_FB_VESA_STD | |
361 | #ifdef CONFIG_VIDEO_SELECT | |
362 | cmpb $0, graphic_mode | |
363 | jnz mopar_gr | |
364 | #endif | |
365 | +#endif | |
366 | movb $0x03, %ah # Read cursor position | |
367 | xorb %bh, %bh | |
368 | int $0x10 | |
369 | @@ -200,6 +202,7 @@ mopar2: movb %al, %fs:(PARAM_VIDEO_LINES | |
370 | ret | |
371 | ||
372 | #ifdef CONFIG_VIDEO_SELECT | |
373 | +#ifdef CONFIG_FB_VESA_STD | |
374 | # Fetching of VESA frame buffer parameters | |
375 | mopar_gr: | |
376 | leaw modelist+1024, %di | |
377 | @@ -278,6 +281,7 @@ dac_done: | |
378 | movw %es, %fs:(PARAM_VESAPM_SEG) | |
379 | movw %di, %fs:(PARAM_VESAPM_OFF) | |
380 | no_pm: ret | |
381 | +#endif | |
382 | ||
383 | # The video mode menu | |
384 | mode_menu: | |
385 | @@ -492,10 +496,12 @@ mode_set: | |
386 | ||
387 | cmpb $VIDEO_FIRST_V7>>8, %ah | |
388 | jz setv7 | |
389 | - | |
390 | + | |
391 | +#ifdef CONFIG_FB_VESA_STD | |
392 | cmpb $VIDEO_FIRST_VESA>>8, %ah | |
393 | jnc check_vesa | |
394 | - | |
395 | +#endif | |
396 | + | |
397 | orb %ah, %ah | |
398 | jz setmenu | |
399 | ||
400 | @@ -567,6 +573,7 @@ setr1: lodsw | |
401 | movw -4(%si), %ax # Fetch mode ID | |
402 | jmp _m_s | |
403 | ||
404 | +#ifdef CONFIG_FB_VESA_STD | |
405 | check_vesa: | |
406 | leaw modelist+1024, %di | |
407 | subb $VIDEO_FIRST_VESA>>8, %bh | |
408 | @@ -600,6 +607,7 @@ check_vesa: | |
409 | ret | |
410 | ||
411 | _setbad: jmp setbad # Ugly... | |
412 | +#endif | |
413 | ||
414 | # Recalculate vertical display end registers -- this fixes various | |
415 | # inconsistencies of extended modes on many adapters. Called when | |
416 | diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig | |
417 | index fdebd60..a1d6253 100644 | |
418 | --- a/drivers/video/Kconfig | |
419 | +++ b/drivers/video/Kconfig | |
420 | @@ -454,8 +454,8 @@ config FB_TGA | |
421 | cards. Say Y if you have one of those. | |
422 | ||
423 | config FB_VESA | |
424 | - bool "VESA VGA graphics support" | |
425 | - depends on (FB = y) && X86 | |
426 | + tristate "VESA VGA graphics support" | |
427 | + depends on (FB = y) && (X86 || X86_64) | |
428 | select FB_CFB_FILLRECT | |
429 | select FB_CFB_COPYAREA | |
430 | select FB_CFB_IMAGEBLIT | |
431 | @@ -465,6 +465,48 @@ config FB_VESA | |
432 | You will get a boot time penguin logo at no additional cost. Please | |
433 | read <file:Documentation/fb/vesafb.txt>. If unsure, say Y. | |
434 | ||
435 | +choice | |
436 | + prompt "VESA driver type" | |
437 | + depends on FB_VESA | |
438 | + default FB_VESA_STD if X86_64 | |
439 | + default FB_VESA_TNG if X86 | |
440 | + | |
441 | +config FB_VESA_STD | |
442 | + bool "vesafb" | |
443 | + help | |
444 | + This is the frame buffer device driver for generic VESA 2.0 | |
445 | + compliant graphic cards. The older VESA 1.2 cards are not supported. | |
446 | + You will get a boot time penguin logo at no additional cost. Please | |
447 | + read <file:Documentation/fb/vesafb.txt>. Choose this driver if you | |
448 | + are experiencing problems with vesafb-tng or if you own a 64-bit system. | |
449 | + | |
450 | + Note that this driver cannot be compiled as a module. | |
451 | + | |
452 | +config FB_VESA_TNG | |
453 | + bool "vesafb-tng" | |
454 | + depends on !X86_64 | |
455 | + select FB_MODE_HELPERS | |
456 | + help | |
457 | + This is the frame buffer device driver for generic VESA 2.0 | |
458 | + compliant graphic cards. It is capable of taking advantage of | |
459 | + VBE 3.0 features. With this driver you will be able to adjust | |
460 | + the refresh rate (VBE 3.0 compliant boards only) and change | |
461 | + the graphic mode on-the-fly. | |
462 | + | |
463 | + You will also get a boot time penguin logo at no additional cost. Please | |
464 | + read <file:Documentation/fb/vesafb.txt>. | |
465 | + | |
466 | +endchoice | |
467 | + | |
468 | +config FB_VESA_DEFAULT_MODE | |
469 | + string "VESA default mode" | |
470 | + depends on FB_VESA_TNG | |
471 | + default "640x480@60" | |
472 | + help | |
473 | + This option is used to determine the default mode vesafb is | |
474 | + supposed to switch to in case no mode is provided as a kernel | |
475 | + command line parameter. | |
476 | + | |
477 | config VIDEO_SELECT | |
478 | bool | |
479 | depends on FB_VESA | |
480 | diff --git a/drivers/video/Makefile b/drivers/video/Makefile | |
481 | index aa434e7..247cfb3 100644 | |
482 | --- a/drivers/video/Makefile | |
483 | +++ b/drivers/video/Makefile | |
484 | @@ -96,7 +96,11 @@ obj-$(CONFIG_FB_IMX) += imx | |
485 | obj-$(CONFIG_FB_S3C2410) += s3c2410fb.o | |
486 | ||
487 | # Platform or fallback drivers go here | |
488 | -obj-$(CONFIG_FB_VESA) += vesafb.o | |
489 | +ifeq ($(CONFIG_FB_VESA_STD),y) | |
490 | + obj-y += vesafb.o | |
491 | +else | |
492 | + obj-$(CONFIG_FB_VESA) += vesafb-thread.o vesafb-tng.o | |
493 | +endif | |
494 | obj-$(CONFIG_FB_VGA16) += vga16fb.o vgastate.o | |
495 | obj-$(CONFIG_FB_OF) += offb.o | |
496 | ||
497 | diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c | |
498 | index 996c7b5..f48eee0 100644 | |
499 | --- a/drivers/video/fbmem.c | |
500 | +++ b/drivers/video/fbmem.c | |
501 | @@ -1430,6 +1430,7 @@ fbmem_init(void) | |
502 | printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class)); | |
503 | fb_class = NULL; | |
504 | } | |
505 | + | |
506 | return 0; | |
507 | } | |
508 | ||
509 | diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c | |
510 | index 1da2f84..6755cb2 100644 | |
511 | --- a/drivers/video/modedb.c | |
512 | +++ b/drivers/video/modedb.c | |
513 | @@ -667,6 +667,7 @@ void fb_var_to_videomode(struct fb_video | |
514 | { | |
515 | u32 pixclock, hfreq, htotal, vtotal; | |
516 | ||
517 | + mode->refresh = 0; | |
518 | mode->name = NULL; | |
519 | mode->xres = var->xres; | |
520 | mode->yres = var->yres; | |
521 | diff --git a/drivers/video/vesafb-thread.c b/drivers/video/vesafb-thread.c | |
522 | new file mode 100644 | |
523 | index 0000000..249d794 | |
524 | --- /dev/null | |
525 | +++ b/drivers/video/vesafb-thread.c | |
526 | @@ -0,0 +1,722 @@ | |
527 | +/* | |
528 | + * Framebuffer driver for VBE 2.0+ compliant graphic boards. | |
529 | + * Kernel thread and vm86 routines. | |
530 | + * | |
531 | + * (c) 2004-2005 Michal Januszewski <spock@gentoo.org> | |
532 | + * | |
533 | + */ | |
534 | + | |
535 | +#include <linux/config.h> | |
536 | +#include <linux/slab.h> | |
537 | +#include <linux/workqueue.h> | |
538 | +#include <linux/completion.h> | |
539 | +#include <linux/module.h> | |
540 | +#include <linux/kernel.h> | |
541 | +#include <linux/errno.h> | |
542 | +#include <linux/mm.h> | |
543 | +#include <linux/delay.h> | |
544 | +#include <linux/signal.h> | |
545 | +#include <linux/suspend.h> | |
546 | +#include <linux/unistd.h> | |
547 | +#include <video/vesa.h> | |
548 | +#include <video/edid.h> | |
549 | +#include <asm/mman.h> | |
550 | +#include <asm/page.h> | |
551 | +#include <asm/vm86.h> | |
552 | +#include <asm/thread_info.h> | |
553 | +#include <asm/uaccess.h> | |
554 | +#include <asm/mmu_context.h> | |
555 | +#include "edid.h" | |
556 | + | |
557 | +#ifdef MODULE | |
558 | +int errno; | |
559 | +#endif | |
560 | + | |
561 | +static DECLARE_COMPLETION(vesafb_th_completion); | |
562 | +static DECLARE_MUTEX(vesafb_task_list_sem); | |
563 | +static LIST_HEAD(vesafb_task_list); | |
564 | +static DECLARE_WAIT_QUEUE_HEAD(vesafb_wait); | |
565 | + | |
566 | +static struct vm86_struct vm86; | |
567 | +static int vesafb_pid = 0; | |
568 | + | |
569 | +_syscall3(int,ioperm,unsigned long, a, unsigned long, b, unsigned long, c); | |
570 | +_syscall1(int,vm86old,struct vm86_struct __user*, v86); | |
571 | + | |
572 | +#define DEFAULT_VM86_FLAGS (IF_MASK | IOPL_MASK) | |
573 | +#define VM86_PUSHW(x) \ | |
574 | +do { \ | |
575 | + vm86.regs.esp -= 2; \ | |
576 | + *(u16*)(STACK_ADDR + vm86.regs.esp) = x; \ | |
577 | +} while(0); | |
578 | + | |
579 | +/* Stack, the return code and buffers will be put into | |
580 | + * one contiguous memory chunk: | |
581 | + * | |
582 | + * [ STACK | RET_CODE | BUFFER ] | |
583 | + * | |
584 | + * We only need a buffer that is ca. 0x2000 bytes in size. | |
585 | + * Some video BIOSes (sis6326) try to store data somewhere | |
586 | + * in 0x7000-0x7fff, so we zeromap more memory to be safe. | |
587 | + */ | |
588 | +#define IVTBDA_SIZE PAGE_SIZE | |
589 | +#define RET_CODE_SIZE 0x0010 | |
590 | +#define STACK_SIZE 0x0500 | |
591 | +#define BUFFER_SIZE 0x10000 | |
592 | + | |
593 | +/* The amount of memory that will be allocated should be a multiple | |
594 | + * of PAGE_SIZE. */ | |
595 | +#define __MEM_SIZE (RET_CODE_SIZE + STACK_SIZE + BUFFER_SIZE) | |
596 | +#define REAL_MEM_SIZE (((__MEM_SIZE / PAGE_SIZE) + 1) * PAGE_SIZE) | |
597 | + | |
598 | +#define IVTBDA_ADDR 0x00000 | |
599 | +#define STACK_ADDR (IVTBDA_ADDR + IVTBDA_SIZE) | |
600 | +#define RET_CODE_ADDR (STACK_ADDR + STACK_SIZE) | |
601 | +#define BUF_ADDR (RET_CODE_ADDR + RET_CODE_SIZE) | |
602 | + | |
603 | +#define FLAG_D (1 << 10) | |
604 | + | |
605 | +/* Segment prefix opcodes */ | |
606 | +enum { | |
607 | + P_CS = 0x2e, | |
608 | + P_SS = 0x36, | |
609 | + P_DS = 0x3e, | |
610 | + P_ES = 0x26, | |
611 | + P_FS = 0x64, | |
612 | + P_GS = 0x65 | |
613 | +}; | |
614 | + | |
615 | +/* Emulated vm86 ins instruction */ | |
616 | +static void vm86_ins(int size) | |
617 | +{ | |
618 | + u32 edx, edi; | |
619 | + edx = vm86.regs.edx & 0xffff; | |
620 | + edi = (vm86.regs.edi & 0xffff) + (u32)(vm86.regs.es << 4); | |
621 | + | |
622 | + if (vm86.regs.eflags & FLAG_D) | |
623 | + asm volatile ("std\n"); | |
624 | + else | |
625 | + asm volatile ("cld\n"); | |
626 | + | |
627 | + switch (size) { | |
628 | + case 4: | |
629 | + asm volatile ("insl\n" : "=D" (edi) : "d" (edx), "0" (edi)); | |
630 | + break; | |
631 | + case 2: | |
632 | + asm volatile ("insw\n" : "=D" (edi) : "d" (edx), "0" (edi)); | |
633 | + break; | |
634 | + case 1: | |
635 | + asm volatile ("insb\n" : "=D" (edi) : "d" (edx), "0" (edi)); | |
636 | + break; | |
637 | + } | |
638 | + | |
639 | + if (vm86.regs.eflags & FLAG_D) | |
640 | + asm volatile ("cld\n"); | |
641 | + | |
642 | + edi -= (u32)(vm86.regs.es << 4); | |
643 | + | |
644 | + vm86.regs.edi &= 0xffff0000; | |
645 | + vm86.regs.edi |= edi & 0xffff; | |
646 | +} | |
647 | + | |
648 | +static void vm86_rep_ins(int size) | |
649 | +{ | |
650 | + u16 cx = vm86.regs.ecx; | |
651 | + while (cx--) | |
652 | + vm86_ins(size); | |
653 | + | |
654 | + vm86.regs.ecx &= 0xffff0000; | |
655 | +} | |
656 | + | |
657 | +/* Emulated vm86 outs instruction */ | |
658 | +static void vm86_outs(int size, int segment) | |
659 | +{ | |
660 | + u32 edx, esi, base; | |
661 | + | |
662 | + edx = vm86.regs.edx & 0xffff; | |
663 | + esi = vm86.regs.esi & 0xffff; | |
664 | + | |
665 | + switch (segment) { | |
666 | + case P_CS: base = vm86.regs.cs; break; | |
667 | + case P_SS: base = vm86.regs.ss; break; | |
668 | + case P_ES: base = vm86.regs.es; break; | |
669 | + case P_FS: base = vm86.regs.fs; break; | |
670 | + case P_GS: base = vm86.regs.gs; break; | |
671 | + default: base = vm86.regs.ds; break; | |
672 | + } | |
673 | + | |
674 | + esi += base << 4; | |
675 | + | |
676 | + if (vm86.regs.eflags & FLAG_D) | |
677 | + asm volatile ("std\n"); | |
678 | + else | |
679 | + asm volatile ("cld\n"); | |
680 | + | |
681 | + switch (size) { | |
682 | + case 4: | |
683 | + asm volatile ("outsl\n" : "=S" (esi) : "d" (edx), "0" (esi)); | |
684 | + break; | |
685 | + case 2: | |
686 | + asm volatile ("outsw\n" : "=S" (esi) : "d" (edx), "0" (esi)); | |
687 | + break; | |
688 | + case 1: | |
689 | + asm volatile ("outsb\n" : "=S" (esi) : "d" (edx), "0" (esi)); | |
690 | + break; | |
691 | + } | |
692 | + | |
693 | + if (vm86.regs.eflags & FLAG_D) | |
694 | + asm volatile ("cld"); | |
695 | + | |
696 | + esi -= base << 4; | |
697 | + vm86.regs.esi &= 0xffff0000; | |
698 | + vm86.regs.esi |= (esi & 0xffff); | |
699 | +} | |
700 | + | |
701 | +static void vm86_rep_outs(int size, int segment) | |
702 | +{ | |
703 | + u16 cx = vm86.regs.ecx; | |
704 | + while (cx--) | |
705 | + vm86_outs(size, segment); | |
706 | + | |
707 | + vm86.regs.ecx &= 0xffff0000; | |
708 | +} | |
709 | + | |
710 | +static int vm86_do_unknown(void) | |
711 | +{ | |
712 | + u8 data32 = 0, segment = P_DS, rep = 0; | |
713 | + u8 *instr; | |
714 | + int ret = 0, i = 0; | |
715 | + | |
716 | + instr = (u8*)((vm86.regs.cs << 4) + vm86.regs.eip); | |
717 | + | |
718 | + while (1) { | |
719 | + switch(instr[i]) { | |
720 | + case 0x66: /* operand size prefix */ | |
721 | + data32 = 1 - data32; | |
722 | + i++; | |
723 | + break; | |
724 | + case 0xf2: /* repnz */ | |
725 | + case 0xf3: /* rep */ | |
726 | + rep = 1; | |
727 | + i++; | |
728 | + break; | |
729 | + case P_CS: /* segment prefix */ | |
730 | + case P_SS: | |
731 | + case P_DS: | |
732 | + case P_ES: | |
733 | + case P_FS: | |
734 | + case P_GS: | |
735 | + segment = instr[i]; | |
736 | + i++; | |
737 | + break; | |
738 | + case 0xf0: /* LOCK - ignored */ | |
739 | + case 0x67: /* address size prefix - ignored */ | |
740 | + i++; | |
741 | + break; | |
742 | + case 0x6c: /* insb */ | |
743 | + if (rep) | |
744 | + vm86_rep_ins(1); | |
745 | + else | |
746 | + vm86_ins(1); | |
747 | + i++; | |
748 | + goto out; | |
749 | + case 0x6d: /* insw / insd */ | |
750 | + if (rep) { | |
751 | + if (data32) | |
752 | + vm86_rep_ins(4); | |
753 | + else | |
754 | + vm86_rep_ins(2); | |
755 | + } else { | |
756 | + if (data32) | |
757 | + vm86_ins(4); | |
758 | + else | |
759 | + vm86_ins(2); | |
760 | + } | |
761 | + i++; | |
762 | + goto out; | |
763 | + case 0x6e: /* outsb */ | |
764 | + if (rep) | |
765 | + vm86_rep_outs(1, segment); | |
766 | + else | |
767 | + vm86_outs(1, segment); | |
768 | + i++; | |
769 | + goto out; | |
770 | + case 0x6f: /* outsw / outsd */ | |
771 | + if (rep) { | |
772 | + if (data32) | |
773 | + vm86_rep_outs(4, segment); | |
774 | + else | |
775 | + vm86_rep_outs(2, segment); | |
776 | + } else { | |
777 | + if (data32) | |
778 | + vm86_outs(4, segment); | |
779 | + else | |
780 | + vm86_outs(2, segment); | |
781 | + } | |
782 | + i++; | |
783 | + goto out; | |
784 | + case 0xe4: /* inb xx */ | |
785 | + asm volatile ( | |
786 | + "inb %w1, %b0" | |
787 | + : "=a" (vm86.regs.eax) | |
788 | + : "d" (instr[i+1]), "0" (vm86.regs.eax)); | |
789 | + i += 2; | |
790 | + goto out; | |
791 | + case 0xe5: /* inw xx / ind xx */ | |
792 | + if (data32) { | |
793 | + asm volatile ( | |
794 | + "inl %w1, %0" | |
795 | + : "=a" (vm86.regs.eax) | |
796 | + : "d" (instr[i+1]), | |
797 | + "0" (vm86.regs.eax)); | |
798 | + } else { | |
799 | + asm volatile ( | |
800 | + "inw %w1, %w0" | |
801 | + : "=a" (vm86.regs.eax) | |
802 | + : "d" (instr[i+1]), | |
803 | + "0" (vm86.regs.eax)); | |
804 | + } | |
805 | + i += 2; | |
806 | + goto out; | |
807 | + | |
808 | + case 0xec: /* inb dx */ | |
809 | + asm volatile ( | |
810 | + "inb %w1, %b0" | |
811 | + : "=a" (vm86.regs.eax) | |
812 | + : "d" (vm86.regs.edx), "0" (vm86.regs.eax)); | |
813 | + i++; | |
814 | + goto out; | |
815 | + case 0xed: /* inw dx / ind dx */ | |
816 | + if (data32) { | |
817 | + asm volatile ( | |
818 | + "inl %w1, %0" | |
819 | + : "=a" (vm86.regs.eax) | |
820 | + : "d" (vm86.regs.edx)); | |
821 | + } else { | |
822 | + asm volatile ( | |
823 | + "inw %w1, %w0" | |
824 | + : "=a" (vm86.regs.eax) | |
825 | + : "d" (vm86.regs.edx)); | |
826 | + } | |
827 | + i++; | |
828 | + goto out; | |
829 | + case 0xe6: /* outb xx */ | |
830 | + asm volatile ( | |
831 | + "outb %b0, %w1" | |
832 | + : /* no return value */ | |
833 | + : "a" (vm86.regs.eax), "d" (instr[i+1])); | |
834 | + i += 2; | |
835 | + goto out; | |
836 | + case 0xe7: /* outw xx / outd xx */ | |
837 | + if (data32) { | |
838 | + asm volatile ( | |
839 | + "outl %0, %w1" | |
840 | + : /* no return value */ | |
841 | + : "a" (vm86.regs.eax), | |
842 | + "d" (instr[i+1])); | |
843 | + } else { | |
844 | + asm volatile ( | |
845 | + "outw %w0, %w1" | |
846 | + : /* no return value */ | |
847 | + : "a" (vm86.regs.eax), | |
848 | + "d" (instr[i+1])); | |
849 | + } | |
850 | + i += 2; | |
851 | + goto out; | |
852 | + case 0xee: /* outb dx */ | |
853 | + asm volatile ( | |
854 | + "outb %b0, %w1" | |
855 | + : /* no return value */ | |
856 | + : "a" (vm86.regs.eax), "d" (vm86.regs.edx)); | |
857 | + i++; | |
858 | + goto out; | |
859 | + case 0xef: /* outw dx / outd dx */ | |
860 | + if (data32) { | |
861 | + asm volatile ( | |
862 | + "outl %0, %w1" | |
863 | + : /* no return value */ | |
864 | + : "a" (vm86.regs.eax), | |
865 | + "d" (vm86.regs.edx)); | |
866 | + } else { | |
867 | + asm volatile ( | |
868 | + "outw %w0, %w1" | |
869 | + : /* no return value */ | |
870 | + : "a" (vm86.regs.eax), | |
871 | + "d" (vm86.regs.edx)); | |
872 | + } | |
873 | + i++; | |
874 | + goto out; | |
875 | + default: | |
876 | + printk(KERN_ERR "vesafb: BUG, opcode 0x%x emulation " | |
877 | + "not supported (EIP: 0x%lx)\n", | |
878 | + instr[i], (u32)(vm86.regs.cs << 4) + | |
879 | + vm86.regs.eip); | |
880 | + ret = 1; | |
881 | + goto out; | |
882 | + } | |
883 | + } | |
884 | +out: vm86.regs.eip += i; | |
885 | + return ret; | |
886 | +} | |
887 | + | |
888 | +void vesafb_do_vm86(struct vm86_regs *regs) | |
889 | +{ | |
890 | + unsigned int ret; | |
891 | + u8 *retcode = (void*)RET_CODE_ADDR; | |
892 | + | |
893 | + memset(&vm86,0,sizeof(vm86)); | |
894 | + memcpy(&vm86.regs, regs, sizeof(struct vm86_regs)); | |
895 | + | |
896 | + /* The return code */ | |
897 | + retcode[0] = 0xcd; /* int opcode */ | |
898 | + retcode[1] = 0xff; /* int number (255) */ | |
899 | + | |
900 | + /* We use int 0xff to get back to protected mode */ | |
901 | + memset(&vm86.int_revectored, 0, sizeof(vm86.int_revectored)); | |
902 | + ((unsigned char *)&vm86.int_revectored)[0xff / 8] |= (1 << (0xff % 8)); | |
903 | + | |
904 | + /* | |
905 | + * We want to call int 0x10, so we set: | |
906 | + * CS = 0x42 = 0x10 * 4 + 2 | |
907 | + * IP = 0x40 = 0x10 * 4 | |
908 | + * and SS:ESP. It's up to the caller to set the rest of the registers. | |
909 | + */ | |
910 | + vm86.regs.eflags = DEFAULT_VM86_FLAGS; | |
911 | + vm86.regs.cs = *(unsigned short *)0x42; | |
912 | + vm86.regs.eip = *(unsigned short *)0x40; | |
913 | + vm86.regs.ss = (STACK_ADDR >> 4); | |
914 | + vm86.regs.esp = ((STACK_ADDR & 0x0000f) + STACK_SIZE); | |
915 | + | |
916 | + /* These will be fetched off the stack when we come to an iret in the | |
917 | + * int's 0x10 code. */ | |
918 | + VM86_PUSHW(DEFAULT_VM86_FLAGS); | |
919 | + VM86_PUSHW((RET_CODE_ADDR >> 4)); /* return code segment */ | |
920 | + VM86_PUSHW((RET_CODE_ADDR & 0x0000f)); /* return code offset */ | |
921 | + | |
922 | + while(1) { | |
923 | + ret = vm86old(&vm86); | |
924 | + | |
925 | + if (VM86_TYPE(ret) == VM86_INTx) { | |
926 | + int vint = VM86_ARG(ret); | |
927 | + | |
928 | + /* If exit from vm86 was caused by int 0xff, then | |
929 | + * we're done.. */ | |
930 | + if (vint == 0xff) | |
931 | + goto out; | |
932 | + | |
933 | + /* .. otherwise, we have to call the int handler | |
934 | + * manually */ | |
935 | + VM86_PUSHW(vm86.regs.eflags); | |
936 | + VM86_PUSHW(vm86.regs.cs); | |
937 | + VM86_PUSHW(vm86.regs.eip); | |
938 | + | |
939 | + vm86.regs.cs = *(u16 *)((vint << 2) + 2); | |
940 | + vm86.regs.eip = *(u16 *)(vint << 2); | |
941 | + vm86.regs.eflags &= ~(VIF_MASK | TF_MASK); | |
942 | + } else if (VM86_TYPE(ret) == VM86_UNKNOWN) { | |
943 | + if (vm86_do_unknown()) | |
944 | + goto out; | |
945 | + } else { | |
946 | + printk(KERN_ERR "vesafb: BUG, returned from " | |
947 | + "vm86 with %x (EIP: 0x%lx)\n", | |
948 | + ret, (u32)(vm86.regs.cs << 4) + | |
949 | + vm86.regs.eip); | |
950 | + goto out; | |
951 | + } | |
952 | + } | |
953 | + | |
954 | +out: /* copy the registers' state back to the caller's struct */ | |
955 | + memcpy(regs, &vm86.regs, sizeof(struct vm86_regs)); | |
956 | +} | |
957 | + | |
958 | +static int vesafb_remap_pfn_range(unsigned long start, unsigned long end, | |
959 | + unsigned long pgoff, unsigned long prot, | |
960 | + int type) | |
961 | +{ | |
962 | + struct vm_area_struct *vma; | |
963 | + struct mm_struct *mm = current->mm; | |
964 | + int ret = 0; | |
965 | + | |
966 | + vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL); | |
967 | + if (!vma) | |
968 | + return -ENOMEM; | |
969 | + memset(vma, 0, sizeof(*vma)); | |
970 | + down_write(&mm->mmap_sem); | |
971 | + vma->vm_mm = mm; | |
972 | + vma->vm_start = start; | |
973 | + vma->vm_end = end; | |
974 | + vma->vm_flags = VM_READ | VM_WRITE | VM_EXEC; | |
975 | + vma->vm_flags |= mm->def_flags; | |
976 | + vma->vm_page_prot.pgprot = prot; | |
977 | + vma->vm_pgoff = pgoff; | |
978 | + | |
979 | + if ((ret = insert_vm_struct(mm, vma))) { | |
980 | + up_write(&mm->mmap_sem); | |
981 | + kmem_cache_free(vm_area_cachep, vma); | |
982 | + return ret; | |
983 | + } | |
984 | + | |
985 | + if (type) { | |
986 | + vma->vm_flags |= VM_SHARED; | |
987 | + ret = zeromap_page_range(vma, | |
988 | + vma->vm_start, | |
989 | + vma->vm_end - vma->vm_start, | |
990 | + vma->vm_page_prot); | |
991 | + } else { | |
992 | + ret = remap_pfn_range(vma, | |
993 | + vma->vm_start, | |
994 | + vma->vm_pgoff, | |
995 | + vma->vm_end - vma->vm_start, | |
996 | + vma->vm_page_prot); | |
997 | + } | |
998 | + up_write(&mm->mmap_sem); | |
999 | + return ret; | |
1000 | +} | |
1001 | + | |
1002 | +static inline int vesafb_init_mem(void) | |
1003 | +{ | |
1004 | + int ret = 0; | |
1005 | + | |
1006 | + /* The memory chunks we're remapping here should be multiples | |
1007 | + * of PAGE_SIZE. */ | |
1008 | + ret += vesafb_remap_pfn_range(0x00000, IVTBDA_SIZE, 0, | |
1009 | + PROT_READ | PROT_EXEC | PROT_WRITE, 0); | |
1010 | + ret += vesafb_remap_pfn_range(IVTBDA_SIZE, REAL_MEM_SIZE, 0, | |
1011 | + PROT_READ | PROT_EXEC | PROT_WRITE, 1); | |
1012 | + ret += vesafb_remap_pfn_range(0x9f000, 0x100000, | |
1013 | + 0x9f000 >> PAGE_SHIFT, | |
1014 | + PROT_READ | PROT_EXEC | PROT_WRITE, 0); | |
1015 | + if (ret) | |
1016 | + printk(KERN_ERR "vesafb thread: memory remapping failed\n"); | |
1017 | + | |
1018 | + return ret; | |
1019 | +} | |
1020 | + | |
1021 | +#define vesafb_get_string(str) \ | |
1022 | +{ \ | |
1023 | + /* The address is in the form ssssoooo, where oooo = offset, \ | |
1024 | + * ssss = segment */ \ | |
1025 | + addr = ((p_vbe(tsk->buf)->str & 0xffff0000) >> 12) + \ | |
1026 | + (p_vbe(tsk->buf)->str & 0x0000ffff); \ | |
1027 | + \ | |
1028 | + /* The data is in ROM which is shared between processes, so we \ | |
1029 | + * just translate the real mode address into one visible from \ | |
1030 | + * kernel space */ \ | |
1031 | + if (addr >= 0xa0000) { \ | |
1032 | + p_vbe(tsk->buf)->str = (u32) __va(addr); \ | |
1033 | + \ | |
1034 | + /* The data is in the buffer, we just have to convert the \ | |
1035 | + * address so that it points into the buffer user provided. */ \ | |
1036 | + } else if (addr > BUF_ADDR && addr < BUF_ADDR + \ | |
1037 | + sizeof(struct vesafb_vbe_ib)) { \ | |
1038 | + addr -= BUF_ADDR; \ | |
1039 | + p_vbe(tsk->buf)->str = (u32) (tsk->buf + addr); \ | |
1040 | + \ | |
1041 | + /* This should never happen: someone was insane enough to put \ | |
1042 | + * the data somewhere in RAM.. */ \ | |
1043 | + } else { \ | |
1044 | + p_vbe(tsk->buf)->str = (u32) ""; \ | |
1045 | + } \ | |
1046 | +} | |
1047 | + | |
1048 | +void vesafb_handle_getvbeib(struct vesafb_task *tsk) | |
1049 | +{ | |
1050 | + int addr, res; | |
1051 | + | |
1052 | + tsk->regs.es = (BUF_ADDR >> 4); | |
1053 | + tsk->regs.edi = (BUF_ADDR & 0x000f); | |
1054 | + strncpy(p_vbe(BUF_ADDR)->vbe_signature, "VBE2", 4); | |
1055 | + | |
1056 | + vesafb_do_vm86(&tsk->regs); | |
1057 | + memcpy(tsk->buf, (void*)(BUF_ADDR), sizeof(struct vesafb_vbe_ib)); | |
1058 | + | |
1059 | + /* The OEM fields were not defined prior to VBE 2.0 */ | |
1060 | + if (p_vbe(tsk->buf)->vbe_version >= 0x200) { | |
1061 | + vesafb_get_string(oem_string_ptr); | |
1062 | + vesafb_get_string(oem_vendor_name_ptr); | |
1063 | + vesafb_get_string(oem_product_name_ptr); | |
1064 | + vesafb_get_string(oem_product_rev_ptr); | |
1065 | + } | |
1066 | + | |
1067 | + /* This is basically the same as vesafb_get_string() */ | |
1068 | + addr = ((p_vbe(tsk->buf)->mode_list_ptr & 0xffff0000) >> 12) + | |
1069 | + (p_vbe(tsk->buf)->mode_list_ptr & 0x0000ffff); | |
1070 | + | |
1071 | + if (addr >= 0xa0000) { | |
1072 | + p_vbe(tsk->buf)->mode_list_ptr = (u32) __va(addr); | |
1073 | + } else if (addr > BUF_ADDR && addr < BUF_ADDR + | |
1074 | + sizeof(struct vesafb_vbe_ib)) { | |
1075 | + addr -= BUF_ADDR; | |
1076 | + p_vbe(tsk->buf)->mode_list_ptr = (u32) (tsk->buf + addr); | |
1077 | + } else { | |
1078 | + res = 0; | |
1079 | + printk(KERN_WARNING "vesafb: warning, copying modelist " | |
1080 | + "from somewhere in RAM!\n"); | |
1081 | + while (*(u16*)(addr+res) != 0xffff && | |
1082 | + res < (sizeof(p_vbe(tsk->buf)->reserved) - 2)) { | |
1083 | + *(u16*) ((u32)&(p_vbe(tsk->buf)->reserved) + res) = | |
1084 | + *(u16*)(addr+res); | |
1085 | + res += 2; | |
1086 | + } | |
1087 | + *(u16*) ((u32)&(p_vbe(tsk->buf)->reserved) + res) = 0xffff; | |
1088 | + } | |
1089 | +} | |
1090 | + | |
1091 | +int vesafb_handle_tasks(void) | |
1092 | +{ | |
1093 | + struct vesafb_task *tsk; | |
1094 | + struct list_head *curr, *next; | |
1095 | + int ret = 0; | |
1096 | + | |
1097 | + down(&vesafb_task_list_sem); | |
1098 | + list_for_each_safe(curr, next, &vesafb_task_list) { | |
1099 | + tsk = list_entry(curr, struct vesafb_task, node); | |
1100 | + | |
1101 | + if (tsk->flags & TF_EXIT) { | |
1102 | + ret = 1; | |
1103 | + goto task_done; | |
1104 | + } | |
1105 | + if (tsk->flags & TF_GETVBEIB) { | |
1106 | + vesafb_handle_getvbeib(tsk); | |
1107 | + goto task_done; | |
1108 | + } | |
1109 | + if (tsk->flags & TF_MASK_BUF) { | |
1110 | + tsk->regs.es = (BUF_ADDR >> 4); | |
1111 | + tsk->regs.edi = (BUF_ADDR & 0x000f); | |
1112 | + } | |
1113 | + if (tsk->flags & TF_USE_BUF) | |
1114 | + memcpy((void*)BUF_ADDR, tsk->buf, tsk->buf_len); | |
1115 | + | |
1116 | + vesafb_do_vm86(&tsk->regs); | |
1117 | + | |
1118 | + if (tsk->flags & TF_RETURN_BUF) | |
1119 | + memcpy(tsk->buf, (void*)BUF_ADDR, tsk->buf_len); | |
1120 | + | |
1121 | +task_done: list_del(curr); | |
1122 | + complete(&tsk->done); | |
1123 | + } | |
1124 | + | |
1125 | + /* If we're going to kill this thread, don't allow any elements | |
1126 | + * to be added to the task list. */ | |
1127 | + if (!ret) | |
1128 | + up(&vesafb_task_list_sem); | |
1129 | + | |
1130 | + return ret; | |
1131 | +} | |
1132 | + | |
1133 | +/* | |
1134 | + * This 'hybrid' thread serves as a backend for vesafb-tng, handling all vm86 | |
1135 | + * calls. It is started as a kernel thread. It then creates its own mm struct, | |
1136 | + * thus separating itself from any userspace processes. At this moment, it | |
1137 | + * stops being a kernel thread (kernel threads have mm = NULL) and becomes | |
1138 | + * a 'hybrid' thread -- one that has full access to kernel space, yet runs | |
1139 | + * with its own address space. | |
1140 | + * | |
1141 | + * This is necessary because in order to make vm86 calls some parts of the | |
1142 | + * first 1MB of RAM have to be setup to mimic the real mode. These are: | |
1143 | + * - interrupt vector table [0x00000-0x003ff] | |
1144 | + * - BIOS data area [0x00400-0x004ff] | |
1145 | + * - Extended BIOS data area [0x9fc00-0x9ffff] | |
1146 | + * - the video RAM [0xa0000-0xbffff] | |
1147 | + * - video BIOS [0xc0000-0xcffff] | |
1148 | + * - motherboard BIOS [0xf0000-0xfffff] | |
1149 | + */ | |
1150 | +int vesafb_thread(void *unused) | |
1151 | +{ | |
1152 | + int err = 0; | |
1153 | + | |
1154 | + set_fs(KERNEL_DS); | |
1155 | + daemonize("vesafb"); | |
1156 | + | |
1157 | + if (set_new_mm()) { | |
1158 | + err = -ENOMEM; | |
1159 | + goto thr_end; | |
1160 | + } | |
1161 | + if (vesafb_init_mem()) { | |
1162 | + err = -ENOMEM; | |
1163 | + goto thr_end; | |
1164 | + } | |
1165 | + | |
1166 | + DPRINTK("started vesafb thread\n"); | |
1167 | + | |
1168 | + /* Having an IO bitmap makes things faster as we avoid GPFs | |
1169 | + * when running vm86 code. We can live if it fails, though, | |
1170 | + * so don't bother checking for errors. */ | |
1171 | + ioperm(0,1024,1); | |
1172 | + set_user_nice(current, -10); | |
1173 | + | |
1174 | + complete(&vesafb_th_completion); | |
1175 | + | |
1176 | + while (1) { | |
1177 | + if (vesafb_handle_tasks()) | |
1178 | + break; | |
1179 | + wait_event_interruptible(vesafb_wait, | |
1180 | + !list_empty(&vesafb_task_list)); | |
1181 | + try_to_freeze(); | |
1182 | + } | |
1183 | + | |
1184 | +out: DPRINTK("exiting the vesafb thread\n"); | |
1185 | + vesafb_pid = -1; | |
1186 | + | |
1187 | + /* Now that all callers know this thread is no longer running | |
1188 | + * (pid < 0), allow them to continue. */ | |
1189 | + up(&vesafb_task_list_sem); | |
1190 | + return err; | |
1191 | +thr_end: | |
1192 | + down(&vesafb_task_list_sem); | |
1193 | + complete(&vesafb_th_completion); | |
1194 | + goto out; | |
1195 | +} | |
1196 | + | |
1197 | +int vesafb_queue_task(struct vesafb_task *tsk) | |
1198 | +{ | |
1199 | + down(&vesafb_task_list_sem); | |
1200 | + if (vesafb_pid < 0) | |
1201 | + return -1; | |
1202 | + list_add_tail(&tsk->node, &vesafb_task_list); | |
1203 | + up(&vesafb_task_list_sem); | |
1204 | + wake_up(&vesafb_wait); | |
1205 | + return 0; | |
1206 | +} | |
1207 | + | |
1208 | +int vesafb_wait_for_thread(void) | |
1209 | +{ | |
1210 | + /* PID 0 means that the thread is still initializing. */ | |
1211 | + if (vesafb_pid < 0) | |
1212 | + return -1; | |
1213 | + wait_for_completion(&vesafb_th_completion); | |
1214 | + return 0; | |
1215 | +} | |
1216 | + | |
1217 | +int __init vesafb_init_thread(void) | |
1218 | +{ | |
1219 | + vesafb_pid = kernel_thread(vesafb_thread,NULL,0); | |
1220 | + return 0; | |
1221 | +} | |
1222 | + | |
1223 | +#ifdef MODULE | |
1224 | +void __exit vesafb_kill_thread(void) | |
1225 | +{ | |
1226 | + struct vesafb_task *tsk; | |
1227 | + if (vesafb_pid <= 0) | |
1228 | + return; | |
1229 | + | |
1230 | + vesafb_create_task(tsk); | |
1231 | + if (!tsk) | |
1232 | + return; | |
1233 | + tsk->flags |= TF_EXIT; | |
1234 | + vesafb_queue_task(tsk); | |
1235 | + vesafb_wait_for_task(tsk); | |
1236 | + kfree(tsk); | |
1237 | + return; | |
1238 | +} | |
1239 | +module_exit(vesafb_kill_thread); | |
1240 | +#endif | |
1241 | +module_init(vesafb_init_thread); | |
1242 | + | |
1243 | +EXPORT_SYMBOL_GPL(vesafb_queue_task); | |
1244 | +EXPORT_SYMBOL_GPL(vesafb_wait_for_thread); | |
1245 | + | |
1246 | +MODULE_LICENSE("GPL"); | |
1247 | +MODULE_AUTHOR("Michal Januszewski"); | |
1248 | + | |
1249 | diff --git a/drivers/video/vesafb-tng.c b/drivers/video/vesafb-tng.c | |
1250 | new file mode 100644 | |
1251 | index 0000000..e8cf57d | |
1252 | --- /dev/null | |
1253 | +++ b/drivers/video/vesafb-tng.c | |
1254 | @@ -0,0 +1,1484 @@ | |
1255 | +/* | |
1256 | + * Framebuffer driver for VBE 2.0+ compliant graphic boards | |
1257 | + * | |
1258 | + * (c) 2004-2005 Michal Januszewski <spock@gentoo.org | |
1259 | + * Based upon vesafb code by Gerd Knorr <kraxel@goldbach.in-berlin.de | |
1260 | + * | |
1261 | + */ | |
1262 | + | |
1263 | +#include <linux/module.h> | |
1264 | +#include <linux/kernel.h> | |
1265 | +#include <linux/errno.h> | |
1266 | +#include <linux/string.h> | |
1267 | +#include <linux/mm.h> | |
1268 | +#include <linux/tty.h> | |
1269 | +#include <linux/delay.h> | |
1270 | +#include <linux/fb.h> | |
1271 | +#include <linux/ioport.h> | |
1272 | +#include <linux/init.h> | |
1273 | +#include <linux/proc_fs.h> | |
1274 | +#include <linux/completion.h> | |
1275 | +#include <linux/platform_device.h> | |
1276 | +#include <video/edid.h> | |
1277 | +#include <video/vesa.h> | |
1278 | +#include <video/vga.h> | |
1279 | +#include <asm/io.h> | |
1280 | +#include <asm/mtrr.h> | |
1281 | +#include <asm/page.h> | |
1282 | +#include <asm/pgtable.h> | |
1283 | +#include "edid.h" | |
1284 | + | |
1285 | +#define dac_reg (0x3c8) | |
1286 | +#define dac_val (0x3c9) | |
1287 | + | |
1288 | +#define VESAFB_NEED_EXACT_RES 1 | |
1289 | +#define VESAFB_NEED_EXACT_DEPTH 2 | |
1290 | + | |
1291 | +/* --------------------------------------------------------------------- */ | |
1292 | + | |
1293 | +static struct fb_var_screeninfo vesafb_defined __initdata = { | |
1294 | + .activate = FB_ACTIVATE_NOW, | |
1295 | + .height = 0, | |
1296 | + .width = 0, | |
1297 | + .right_margin = 32, | |
1298 | + .upper_margin = 16, | |
1299 | + .lower_margin = 4, | |
1300 | + .vsync_len = 4, | |
1301 | + .vmode = FB_VMODE_NONINTERLACED, | |
1302 | +}; | |
1303 | + | |
1304 | +static struct fb_fix_screeninfo vesafb_fix __initdata = { | |
1305 | + .id = "VESA VGA", | |
1306 | + .type = FB_TYPE_PACKED_PIXELS, | |
1307 | + .accel = FB_ACCEL_NONE, | |
1308 | +}; | |
1309 | + | |
1310 | +static int mtrr = 0; /* disable mtrr by default */ | |
1311 | +static int blank = 1; /* enable blanking by default */ | |
1312 | +static int ypan = 0; /* 0 - nothing, 1 - ypan, 2 - ywrap */ | |
1313 | +static int pmi_setpal = 0; /* pmi for palette changes */ | |
1314 | +static u16 *pmi_base = NULL; /* protected mode interface location */ | |
1315 | +static void (*pmi_start)(void) = NULL; | |
1316 | +static void (*pmi_pal)(void) = NULL; | |
1317 | +static struct vesafb_vbe_ib vbe_ib; | |
1318 | +static struct vesafb_mode_ib *vbe_modes; | |
1319 | +static int vbe_modes_cnt = 0; | |
1320 | +static struct fb_info *vesafb_info = NULL; | |
1321 | +static int nocrtc = 0; /* ignore CRTC settings */ | |
1322 | +static int noedid __initdata = 0; /* don't try DDC transfers */ | |
1323 | +static int vram_remap __initdata = 0; /* set amount of memory to be used */ | |
1324 | +static int vram_total __initdata = 0; /* set total amount of memory */ | |
1325 | +static u16 maxclk __initdata = 0; /* maximum pixel clock */ | |
1326 | +static u16 maxvf __initdata = 0; /* maximum vertical frequency */ | |
1327 | +static u16 maxhf __initdata = 0; /* maximum horizontal frequency */ | |
1328 | +static int gtf __initdata = 0; /* forces use of the GTF */ | |
1329 | +static char *mode_option __initdata = NULL; | |
1330 | +static u16 vbemode __initdata = 0; | |
1331 | + | |
1332 | +/* --------------------------------------------------------------------- */ | |
1333 | + | |
1334 | +static int vesafb_find_vbe_mode(int xres, int yres, int depth, | |
1335 | + unsigned char flags) | |
1336 | +{ | |
1337 | + int i, match = -1, h = 0, d = 0x7fffffff; | |
1338 | + | |
1339 | + for (i = 0; i < vbe_modes_cnt; i++) { | |
1340 | + h = abs(vbe_modes[i].x_res - xres) + | |
1341 | + abs(vbe_modes[i].y_res - yres) + | |
1342 | + abs(depth - vbe_modes[i].depth); | |
1343 | + if (h == 0) | |
1344 | + return i; | |
1345 | + if (h < d || (h == d && vbe_modes[i].depth > depth)) { | |
1346 | + d = h; | |
1347 | + match = i; | |
1348 | + } | |
1349 | + } | |
1350 | + i = 1; | |
1351 | + | |
1352 | + if (flags & VESAFB_NEED_EXACT_DEPTH && vbe_modes[match].depth != depth) | |
1353 | + i = 0; | |
1354 | + if (flags & VESAFB_NEED_EXACT_RES && d > 24) | |
1355 | + i = 0; | |
1356 | + if (i != 0) | |
1357 | + return match; | |
1358 | + else | |
1359 | + return -1; | |
1360 | +} | |
1361 | + | |
1362 | +static int vesafb_pan_display(struct fb_var_screeninfo *var, | |
1363 | + struct fb_info *info) | |
1364 | +{ | |
1365 | + int offset; | |
1366 | + | |
1367 | + offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4; | |
1368 | + | |
1369 | + /* It turns out it's not the best idea to do panning via vm86, | |
1370 | + * so we only allow it if we have a PMI. */ | |
1371 | + if (pmi_start) { | |
1372 | + __asm__ __volatile__( | |
1373 | + "call *(%%edi)" | |
1374 | + : /* no return value */ | |
1375 | + : "a" (0x4f07), /* EAX */ | |
1376 | + "b" (0), /* EBX */ | |
1377 | + "c" (offset), /* ECX */ | |
1378 | + "d" (offset >> 16), /* EDX */ | |
1379 | + "D" (&pmi_start)); /* EDI */ | |
1380 | + } | |
1381 | + return 0; | |
1382 | +} | |
1383 | + | |
1384 | +static int vesafb_blank(int blank, struct fb_info *info) | |
1385 | +{ | |
1386 | + struct vesafb_task *tsk; | |
1387 | + int err = 1; | |
1388 | + | |
1389 | + if (vbe_ib.capabilities & VBE_CAP_VGACOMPAT) { | |
1390 | + int loop = 10000; | |
1391 | + u8 seq = 0, crtc17 = 0; | |
1392 | + | |
1393 | + if (blank == FB_BLANK_POWERDOWN) { | |
1394 | + seq = 0x20; | |
1395 | + crtc17 = 0x00; | |
1396 | + err = 0; | |
1397 | + } else { | |
1398 | + seq = 0x00; | |
1399 | + crtc17 = 0x80; | |
1400 | + err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL; | |
1401 | + } | |
1402 | + | |
1403 | + vga_wseq(NULL, 0x00, 0x01); | |
1404 | + seq |= vga_rseq(NULL, 0x01) & ~0x20; | |
1405 | + vga_wseq(NULL, 0x00, seq); | |
1406 | + | |
1407 | + crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80; | |
1408 | + while (loop--); | |
1409 | + vga_wcrt(NULL, 0x17, crtc17); | |
1410 | + vga_wseq(NULL, 0x00, 0x03); | |
1411 | + } else { | |
1412 | + vesafb_create_task (tsk); | |
1413 | + if (!tsk) | |
1414 | + return -ENOMEM; | |
1415 | + tsk->regs.eax = 0x4f10; | |
1416 | + switch (blank) { | |
1417 | + case FB_BLANK_UNBLANK: | |
1418 | + tsk->regs.ebx = 0x0001; | |
1419 | + break; | |
1420 | + case FB_BLANK_NORMAL: | |
1421 | + tsk->regs.ebx = 0x0101; /* standby */ | |
1422 | + break; | |
1423 | + case FB_BLANK_POWERDOWN: | |
1424 | + tsk->regs.ebx = 0x0401; /* powerdown */ | |
1425 | + break; | |
1426 | + default: | |
1427 | + goto out; | |
1428 | + } | |
1429 | + tsk->flags = TF_CALL; | |
1430 | + if (!vesafb_queue_task (tsk)) | |
1431 | + vesafb_wait_for_task(tsk); | |
1432 | + | |
1433 | + if ((tsk->regs.eax & 0xffff) == 0x004f) | |
1434 | + err = 0; | |
1435 | +out: kfree(tsk); | |
1436 | + } | |
1437 | + return err; | |
1438 | +} | |
1439 | + | |
1440 | +static int vesafb_setpalette(struct vesafb_pal_entry *entries, int count, | |
1441 | + int start, struct fb_info *info) | |
1442 | +{ | |
1443 | + struct vesafb_task *tsk; | |
1444 | + int i = ((struct vesafb_par*)info->par)->mode_idx; | |
1445 | + int ret = 0; | |
1446 | + | |
1447 | + /* We support palette modifications for 8 bpp modes only, so | |
1448 | + * there can never be more than 256 entries. */ | |
1449 | + if (start + count > 256) | |
1450 | + return -EINVAL; | |
1451 | + | |
1452 | + if (pmi_setpal) { | |
1453 | + __asm__ __volatile__( | |
1454 | + "call *(%%esi)" | |
1455 | + : /* no return value */ | |
1456 | + : "a" (0x4f09), /* EAX */ | |
1457 | + "b" (0), /* EBX */ | |
1458 | + "c" (count), /* ECX */ | |
1459 | + "d" (start), /* EDX */ | |
1460 | + "D" (entries), /* EDI */ | |
1461 | + "S" (&pmi_pal)); /* ESI */ | |
1462 | + return 0; | |
1463 | + } | |
1464 | + | |
1465 | + /* Use VGA registers if mode is VGA-compatible. */ | |
1466 | + if (i >= 0 && i < vbe_modes_cnt && | |
1467 | + vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) { | |
1468 | + for (i = 0; i < count; i++) { | |
1469 | + outb_p(start + i, dac_reg); | |
1470 | + outb_p(entries[i].red, dac_val); | |
1471 | + outb_p(entries[i].green, dac_val); | |
1472 | + outb_p(entries[i].blue, dac_val); | |
1473 | + } | |
1474 | + } else { | |
1475 | + vesafb_create_task (tsk); | |
1476 | + if (!tsk) | |
1477 | + return -ENOMEM; | |
1478 | + tsk->regs.eax = 0x4f09; | |
1479 | + tsk->regs.ebx = 0x0; | |
1480 | + tsk->regs.ecx = count; | |
1481 | + tsk->regs.edx = start; | |
1482 | + tsk->buf = entries; | |
1483 | + tsk->buf_len = sizeof(struct vesafb_pal_entry) * count; | |
1484 | + tsk->flags = TF_CALL | TF_USE_BUF; | |
1485 | + | |
1486 | + if (!vesafb_queue_task (tsk)) | |
1487 | + vesafb_wait_for_task(tsk); | |
1488 | + if ((tsk->regs.eax & 0xffff) != 0x004f) | |
1489 | + ret = 1; | |
1490 | + kfree(tsk); | |
1491 | + } | |
1492 | + return ret; | |
1493 | +} | |
1494 | + | |
1495 | +static int vesafb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
1496 | + unsigned blue, unsigned transp, | |
1497 | + struct fb_info *info) | |
1498 | +{ | |
1499 | + struct vesafb_pal_entry entry; | |
1500 | + int shift = 16 - info->var.green.length; | |
1501 | + int ret = 0; | |
1502 | + | |
1503 | + if (regno >= info->cmap.len) | |
1504 | + return -EINVAL; | |
1505 | + | |
1506 | + if (info->var.bits_per_pixel == 8) { | |
1507 | + entry.red = red >> shift; | |
1508 | + entry.green = green >> shift; | |
1509 | + entry.blue = blue >> shift; | |
1510 | + entry.pad = 0; | |
1511 | + | |
1512 | + ret = vesafb_setpalette(&entry, 1, regno, info); | |
1513 | + } else if (regno < 16) { | |
1514 | + switch (info->var.bits_per_pixel) { | |
1515 | + case 16: | |
1516 | + if (info->var.red.offset == 10) { | |
1517 | + /* 1:5:5:5 */ | |
1518 | + ((u32*) (info->pseudo_palette))[regno] = | |
1519 | + ((red & 0xf800) >> 1) | | |
1520 | + ((green & 0xf800) >> 6) | | |
1521 | + ((blue & 0xf800) >> 11); | |
1522 | + } else { | |
1523 | + /* 0:5:6:5 */ | |
1524 | + ((u32*) (info->pseudo_palette))[regno] = | |
1525 | + ((red & 0xf800) ) | | |
1526 | + ((green & 0xfc00) >> 5) | | |
1527 | + ((blue & 0xf800) >> 11); | |
1528 | + } | |
1529 | + break; | |
1530 | + | |
1531 | + case 24: | |
1532 | + case 32: | |
1533 | + red >>= 8; | |
1534 | + green >>= 8; | |
1535 | + blue >>= 8; | |
1536 | + ((u32 *)(info->pseudo_palette))[regno] = | |
1537 | + (red << info->var.red.offset) | | |
1538 | + (green << info->var.green.offset) | | |
1539 | + (blue << info->var.blue.offset); | |
1540 | + break; | |
1541 | + } | |
1542 | + } | |
1543 | + return ret; | |
1544 | +} | |
1545 | + | |
1546 | +static int vesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info) | |
1547 | +{ | |
1548 | + struct vesafb_pal_entry *entries; | |
1549 | + int shift = 16 - info->var.green.length; | |
1550 | + int i, ret = 0; | |
1551 | + | |
1552 | + if (info->var.bits_per_pixel == 8) { | |
1553 | + if (cmap->start + cmap->len > info->cmap.start + | |
1554 | + info->cmap.len || cmap->start < info->cmap.start) | |
1555 | + return -EINVAL; | |
1556 | + | |
1557 | + entries = vmalloc(sizeof(struct vesafb_pal_entry) * cmap->len); | |
1558 | + if (!entries) | |
1559 | + return -ENOMEM; | |
1560 | + for (i = 0; i < cmap->len; i++) { | |
1561 | + entries[i].red = cmap->red[i] >> shift; | |
1562 | + entries[i].green = cmap->green[i] >> shift; | |
1563 | + entries[i].blue = cmap->blue[i] >> shift; | |
1564 | + entries[i].pad = 0; | |
1565 | + } | |
1566 | + ret = vesafb_setpalette(entries, cmap->len, cmap->start, info); | |
1567 | + vfree(entries); | |
1568 | + } else { | |
1569 | + /* For modes with bpp > 8, we only set the pseudo palette in | |
1570 | + * the fb_info struct. We rely on vesafb_setcolreg to do all | |
1571 | + * sanity checking. */ | |
1572 | + for (i = 0; i < cmap->len; i++) { | |
1573 | + ret += vesafb_setcolreg(cmap->start + i, cmap->red[i], | |
1574 | + cmap->green[i], cmap->blue[i], | |
1575 | + 0, info); | |
1576 | + } | |
1577 | + } | |
1578 | + return ret; | |
1579 | +} | |
1580 | + | |
1581 | +static int vesafb_set_par(struct fb_info *info) | |
1582 | +{ | |
1583 | + struct vesafb_par *par = (struct vesafb_par *) info->par; | |
1584 | + struct vesafb_task *tsk; | |
1585 | + struct vesafb_crtc_ib *crtc = NULL; | |
1586 | + struct vesafb_mode_ib *mode = NULL; | |
1587 | + int i, err = 0, depth = info->var.bits_per_pixel; | |
1588 | + | |
1589 | + if (depth > 8 && depth != 32) | |
1590 | + depth = info->var.red.length + info->var.green.length + | |
1591 | + info->var.blue.length; | |
1592 | + | |
1593 | + i = vesafb_find_vbe_mode(info->var.xres, info->var.yres, depth, | |
1594 | + VESAFB_NEED_EXACT_RES | | |
1595 | + VESAFB_NEED_EXACT_DEPTH); | |
1596 | + if (i >= 0) | |
1597 | + mode = &vbe_modes[i]; | |
1598 | + else | |
1599 | + return -EINVAL; | |
1600 | + | |
1601 | + vesafb_create_task (tsk); | |
1602 | + if (!tsk) | |
1603 | + return -ENOMEM; | |
1604 | + tsk->regs.eax = 0x4f02; | |
1605 | + tsk->regs.ebx = mode->mode_id | 0x4000; /* use LFB */ | |
1606 | + tsk->flags = TF_CALL; | |
1607 | + | |
1608 | + if (vbe_ib.vbe_version >= 0x0300 && !nocrtc && | |
1609 | + info->var.pixclock != 0) { | |
1610 | + tsk->regs.ebx |= 0x0800; /* use CRTC data */ | |
1611 | + tsk->flags |= TF_USE_BUF; | |
1612 | + crtc = kmalloc(sizeof(struct vesafb_crtc_ib), GFP_KERNEL); | |
1613 | + if (!crtc) { | |
1614 | + err = -ENOMEM; | |
1615 | + goto out; | |
1616 | + } | |
1617 | + crtc->horiz_start = info->var.xres + info->var.right_margin; | |
1618 | + crtc->horiz_end = crtc->horiz_start + info->var.hsync_len; | |
1619 | + crtc->horiz_total = crtc->horiz_end + info->var.left_margin; | |
1620 | + | |
1621 | + crtc->vert_start = info->var.yres + info->var.lower_margin; | |
1622 | + crtc->vert_end = crtc->vert_start + info->var.vsync_len; | |
1623 | + crtc->vert_total = crtc->vert_end + info->var.upper_margin; | |
1624 | + | |
1625 | + crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000; | |
1626 | + crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock / | |
1627 | + (crtc->vert_total * crtc->horiz_total))); | |
1628 | + crtc->flags = 0; | |
1629 | + | |
1630 | + if (info->var.vmode & FB_VMODE_DOUBLE) | |
1631 | + crtc->flags |= 0x1; | |
1632 | + if (info->var.vmode & FB_VMODE_INTERLACED) | |
1633 | + crtc->flags |= 0x2; | |
1634 | + if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT)) | |
1635 | + crtc->flags |= 0x4; | |
1636 | + if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT)) | |
1637 | + crtc->flags |= 0x8; | |
1638 | + memcpy(&par->crtc, crtc, sizeof(struct vesafb_crtc_ib)); | |
1639 | + } else | |
1640 | + memset(&par->crtc, 0, sizeof(struct vesafb_crtc_ib)); | |
1641 | + | |
1642 | + tsk->buf = (void*)crtc; | |
1643 | + tsk->buf_len = sizeof(struct vesafb_crtc_ib); | |
1644 | + | |
1645 | + if (vesafb_queue_task (tsk)) { | |
1646 | + err = -EINVAL; | |
1647 | + goto out; | |
1648 | + } | |
1649 | + vesafb_wait_for_task(tsk); | |
1650 | + | |
1651 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { | |
1652 | + printk(KERN_ERR "vesafb: mode switch failed (eax: 0x%lx)\n", | |
1653 | + tsk->regs.eax); | |
1654 | + err = -EINVAL; | |
1655 | + goto out; | |
1656 | + } | |
1657 | + par->mode_idx = i; | |
1658 | + | |
1659 | + /* For 8bpp modes, always try to set the DAC to 8 bits. */ | |
1660 | + if (vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC && | |
1661 | + mode->bits_per_pixel <= 8) { | |
1662 | + vesafb_reset_task(tsk); | |
1663 | + tsk->flags = TF_CALL; | |
1664 | + tsk->regs.eax = 0x4f08; | |
1665 | + tsk->regs.ebx = 0x0800; | |
1666 | + | |
1667 | + if (!vesafb_queue_task (tsk)) | |
1668 | + vesafb_wait_for_task(tsk); | |
1669 | + | |
1670 | + if ((tsk->regs.eax & 0xffff) != 0x004f || | |
1671 | + ((tsk->regs.ebx & 0xff00) >> 8) != 8) { | |
1672 | + /* We've failed to set the DAC palette format - | |
1673 | + * time to correct var. */ | |
1674 | + info->var.red.length = 6; | |
1675 | + info->var.green.length = 6; | |
1676 | + info->var.blue.length = 6; | |
1677 | + } | |
1678 | + } | |
1679 | + | |
1680 | + info->fix.visual = (info->var.bits_per_pixel == 8) ? | |
1681 | + FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; | |
1682 | + info->fix.line_length = mode->bytes_per_scan_line; | |
1683 | + | |
1684 | + DPRINTK("set new mode %dx%d-%d (0x%x)\n", | |
1685 | + info->var.xres, info->var.yres, info->var.bits_per_pixel, | |
1686 | + mode->mode_id); | |
1687 | + | |
1688 | +out: if (crtc != NULL) | |
1689 | + kfree(crtc); | |
1690 | + kfree(tsk); | |
1691 | + | |
1692 | + return err; | |
1693 | +} | |
1694 | + | |
1695 | +static void vesafb_setup_var(struct fb_var_screeninfo *var, struct fb_info *info, | |
1696 | + struct vesafb_mode_ib *mode) | |
1697 | +{ | |
1698 | + var->xres = mode->x_res; | |
1699 | + var->yres = mode->y_res; | |
1700 | + var->xres_virtual = mode->x_res; | |
1701 | + var->yres_virtual = (ypan) ? | |
1702 | + info->fix.smem_len / mode->bytes_per_scan_line : | |
1703 | + mode->y_res; | |
1704 | + var->xoffset = 0; | |
1705 | + var->yoffset = 0; | |
1706 | + var->bits_per_pixel = mode->bits_per_pixel; | |
1707 | + | |
1708 | + if (var->bits_per_pixel == 15) | |
1709 | + var->bits_per_pixel = 16; | |
1710 | + | |
1711 | + if (var->bits_per_pixel > 8) { | |
1712 | + var->red.offset = mode->red_off; | |
1713 | + var->red.length = mode->red_len; | |
1714 | + var->green.offset = mode->green_off; | |
1715 | + var->green.length = mode->green_len; | |
1716 | + var->blue.offset = mode->blue_off; | |
1717 | + var->blue.length = mode->blue_len; | |
1718 | + var->transp.offset = mode->rsvd_off; | |
1719 | + var->transp.length = mode->rsvd_len; | |
1720 | + | |
1721 | + DPRINTK("directcolor: size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", | |
1722 | + mode->rsvd_len, | |
1723 | + mode->red_len, | |
1724 | + mode->green_len, | |
1725 | + mode->blue_len, | |
1726 | + mode->rsvd_off, | |
1727 | + mode->red_off, | |
1728 | + mode->green_off, | |
1729 | + mode->blue_off); | |
1730 | + } else { | |
1731 | + var->red.offset = 0; | |
1732 | + var->green.offset = 0; | |
1733 | + var->blue.offset = 0; | |
1734 | + var->transp.offset = 0; | |
1735 | + | |
1736 | + /* We're assuming that we can switch the DAC to 8 bits. If | |
1737 | + * this proves to be incorrect, we'll update the fields | |
1738 | + * later in set_par(). */ | |
1739 | + if (vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC) { | |
1740 | + var->red.length = 8; | |
1741 | + var->green.length = 8; | |
1742 | + var->blue.length = 8; | |
1743 | + var->transp.length = 0; | |
1744 | + } else { | |
1745 | + var->red.length = 6; | |
1746 | + var->green.length = 6; | |
1747 | + var->blue.length = 6; | |
1748 | + var->transp.length = 0; | |
1749 | + } | |
1750 | + } | |
1751 | +} | |
1752 | + | |
1753 | +static void inline vesafb_check_limits(struct fb_var_screeninfo *var, | |
1754 | + struct fb_info *info) | |
1755 | +{ | |
1756 | + struct fb_videomode *mode; | |
1757 | + | |
1758 | + if (!var->pixclock) | |
1759 | + return; | |
1760 | + if (vbe_ib.vbe_version < 0x0300) { | |
1761 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info); | |
1762 | + return; | |
1763 | + } | |
1764 | + if (!fb_validate_mode(var, info)) | |
1765 | + return; | |
1766 | + mode = fb_find_best_mode(var, &info->modelist); | |
1767 | + if (mode) { | |
1768 | + DPRINTK("find_best_mode: %d %d @ %d (vmode: %d)\n", | |
1769 | + mode->xres, mode->yres, mode->refresh, mode->vmode); | |
1770 | + if (mode->xres == var->xres && mode->yres == var->yres && | |
1771 | + !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) { | |
1772 | + fb_videomode_to_var(var, mode); | |
1773 | + return; | |
1774 | + } | |
1775 | + } | |
1776 | + if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) | |
1777 | + return; | |
1778 | + /* Use default refresh rate */ | |
1779 | + var->pixclock = 0; | |
1780 | +} | |
1781 | + | |
1782 | +static int vesafb_check_var(struct fb_var_screeninfo *var, | |
1783 | + struct fb_info *info) | |
1784 | +{ | |
1785 | + int match = -1; | |
1786 | + int depth = var->red.length + var->green.length + var->blue.length; | |
1787 | + | |
1788 | + /* Various apps will use bits_per_pixel to set the color depth, | |
1789 | + * which is theoretically incorrect, but which we'll try to handle | |
1790 | + * here. */ | |
1791 | + if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8) | |
1792 | + depth = var->bits_per_pixel; | |
1793 | + match = vesafb_find_vbe_mode(var->xres, var->yres, depth, | |
1794 | + VESAFB_NEED_EXACT_RES); | |
1795 | + | |
1796 | + if (match == -1) { | |
1797 | + DPRINTK("vesafb: mode %dx%d-%d not found\n", var->xres, | |
1798 | + var->yres, depth); | |
1799 | + return -EINVAL; | |
1800 | + } | |
1801 | + | |
1802 | + vesafb_setup_var(var, info, &vbe_modes[match]); | |
1803 | + DPRINTK("found mode 0x%x (%dx%d-%dbpp)\n", | |
1804 | + vbe_modes[match].mode_id, vbe_modes[match].x_res, | |
1805 | + vbe_modes[match].y_res, vbe_modes[match].depth); | |
1806 | + | |
1807 | + /* Check whether we have remapped enough memory for this mode. */ | |
1808 | + if (var->yres * vbe_modes[match].bytes_per_scan_line > | |
1809 | + info->fix.smem_len) { | |
1810 | + return -EINVAL; | |
1811 | + } | |
1812 | + | |
1813 | + if ((var->vmode & FB_VMODE_DOUBLE) && | |
1814 | + !(vbe_modes[match].mode_attr & 0x100)) | |
1815 | + var->vmode &= ~FB_VMODE_DOUBLE; | |
1816 | + if ((var->vmode & FB_VMODE_INTERLACED) && | |
1817 | + !(vbe_modes[match].mode_attr & 0x200)) | |
1818 | + var->vmode &= ~FB_VMODE_INTERLACED; | |
1819 | + vesafb_check_limits(var, info); | |
1820 | + return 0; | |
1821 | +} | |
1822 | + | |
1823 | +static void vesafb_platform_release(struct device *device) | |
1824 | +{ | |
1825 | + return; | |
1826 | +} | |
1827 | + | |
1828 | +static int __init vesafb_probe(struct platform_device *device); | |
1829 | + | |
1830 | +static struct fb_ops vesafb_ops = { | |
1831 | + .owner = THIS_MODULE, | |
1832 | + .fb_setcolreg = vesafb_setcolreg, | |
1833 | + .fb_setcmap = vesafb_setcmap, | |
1834 | + .fb_pan_display = vesafb_pan_display, | |
1835 | + .fb_blank = vesafb_blank, | |
1836 | + .fb_fillrect = cfb_fillrect, | |
1837 | + .fb_copyarea = cfb_copyarea, | |
1838 | + .fb_imageblit = cfb_imageblit, | |
1839 | + .fb_check_var = vesafb_check_var, | |
1840 | + .fb_set_par = vesafb_set_par | |
1841 | +}; | |
1842 | + | |
1843 | +static struct platform_driver vesafb_driver = { | |
1844 | + .probe = vesafb_probe, | |
1845 | + .driver = { | |
1846 | + .name = "vesafb", | |
1847 | + }, | |
1848 | +}; | |
1849 | + | |
1850 | +static struct platform_device vesafb_device = { | |
1851 | + .name = "vesafb", | |
1852 | + .dev = { | |
1853 | + .release = vesafb_platform_release, | |
1854 | + } | |
1855 | +}; | |
1856 | + | |
1857 | +#ifndef MODULE | |
1858 | +int __init vesafb_setup(char *options) | |
1859 | +{ | |
1860 | + char *this_opt; | |
1861 | + | |
1862 | + if (!options || !*options) | |
1863 | + return 0; | |
1864 | + | |
1865 | + DPRINTK("options %s\n",options); | |
1866 | + | |
1867 | + while ((this_opt = strsep(&options, ",")) != NULL) { | |
1868 | + if (!*this_opt) continue; | |
1869 | + | |
1870 | + DPRINTK("this_opt: %s\n",this_opt); | |
1871 | + | |
1872 | + if (! strcmp(this_opt, "redraw")) | |
1873 | + ypan=0; | |
1874 | + else if (! strcmp(this_opt, "ypan")) | |
1875 | + ypan=1; | |
1876 | + else if (! strcmp(this_opt, "ywrap")) | |
1877 | + ypan=2; | |
1878 | + else if (! strcmp(this_opt, "vgapal")) | |
1879 | + pmi_setpal=0; | |
1880 | + else if (! strcmp(this_opt, "pmipal")) | |
1881 | + pmi_setpal=1; | |
1882 | + else if (! strncmp(this_opt, "mtrr:", 5)) | |
1883 | + mtrr = simple_strtoul(this_opt+5, NULL, 0); | |
1884 | + else if (! strcmp(this_opt, "nomtrr")) | |
1885 | + mtrr=0; | |
1886 | + else if (! strcmp(this_opt, "nocrtc")) | |
1887 | + nocrtc=1; | |
1888 | + else if (! strcmp(this_opt, "noedid")) | |
1889 | + noedid=1; | |
1890 | + else if (! strcmp(this_opt, "noblank")) | |
1891 | + blank=0; | |
1892 | + else if (! strcmp(this_opt, "gtf")) | |
1893 | + gtf=1; | |
1894 | + else if (! strncmp(this_opt, "vtotal:", 7)) | |
1895 | + vram_total = simple_strtoul(this_opt + 7, NULL, 0); | |
1896 | + else if (! strncmp(this_opt, "vremap:", 7)) | |
1897 | + vram_remap = simple_strtoul(this_opt + 7, NULL, 0); | |
1898 | + else if (! strncmp(this_opt, "maxhf:", 6)) | |
1899 | + maxhf = simple_strtoul(this_opt + 6, NULL, 0); | |
1900 | + else if (! strncmp(this_opt, "maxvf:", 6)) | |
1901 | + maxvf = simple_strtoul(this_opt + 6, NULL, 0); | |
1902 | + else if (! strncmp(this_opt, "maxclk:", 7)) | |
1903 | + maxclk = simple_strtoul(this_opt + 7, NULL, 0); | |
1904 | + else if (! strncmp(this_opt, "vbemode:", 8)) | |
1905 | + vbemode = simple_strtoul(this_opt + 8, NULL,0); | |
1906 | + else if (this_opt[0] >= '0' && this_opt[0] <= '9') { | |
1907 | + DPRINTK("mode_option: %s\n",this_opt); | |
1908 | + mode_option = this_opt; | |
1909 | + } else { | |
1910 | + printk(KERN_WARNING | |
1911 | + "vesafb: unrecognized option %s\n", this_opt); | |
1912 | + } | |
1913 | + } | |
1914 | + | |
1915 | + return 0; | |
1916 | +} | |
1917 | +#endif /* !MODULE */ | |
1918 | + | |
1919 | +static int vesafb_read_proc_modes(char *buf, char **start, off_t offset, | |
1920 | + int len, int *eof, void *private) | |
1921 | +{ | |
1922 | + int clen = 0, i; | |
1923 | + | |
1924 | + for (i = 0; i < vbe_modes_cnt; i++) { | |
1925 | + clen += sprintf(buf + clen, "%dx%d-%d\n", vbe_modes[i].x_res, | |
1926 | + vbe_modes[i].y_res, vbe_modes[i].depth); | |
1927 | + } | |
1928 | + *start = buf + offset; | |
1929 | + | |
1930 | + if (clen > offset) { | |
1931 | + clen -= offset; | |
1932 | + } else { | |
1933 | + clen = 0; | |
1934 | + } | |
1935 | + return clen; | |
1936 | +} | |
1937 | + | |
1938 | +static int vesafb_read_proc_vbe_info(char *buf, char **start, off_t offset, | |
1939 | + int len, int *eof, void *private) | |
1940 | +{ | |
1941 | + int clen = 0; | |
1942 | + | |
1943 | + clen += sprintf(buf + clen, "Version: %d.%d\n", | |
1944 | + ((vbe_ib.vbe_version & 0xff00) >> 8), | |
1945 | + vbe_ib.vbe_version & 0xff); | |
1946 | + clen += sprintf(buf + clen, "Vendor: %s\n", | |
1947 | + (char*)vbe_ib.oem_vendor_name_ptr); | |
1948 | + clen += sprintf(buf + clen, "Product: %s\n", | |
1949 | + (char*)vbe_ib.oem_product_name_ptr); | |
1950 | + clen += sprintf(buf + clen, "OEM rev: %s\n", | |
1951 | + (char*)vbe_ib.oem_product_rev_ptr); | |
1952 | + clen += sprintf(buf + clen, "OEM string: %s\n", | |
1953 | + (char*)vbe_ib.oem_string_ptr); | |
1954 | + | |
1955 | + *start = buf + offset; | |
1956 | + | |
1957 | + if (clen > offset) { | |
1958 | + clen -= offset; | |
1959 | + } else { | |
1960 | + clen = 0; | |
1961 | + } | |
1962 | + return clen; | |
1963 | +} | |
1964 | + | |
1965 | +static int __init inline vesafb_vbe_getinfo(struct vesafb_task *tsk) | |
1966 | +{ | |
1967 | + tsk->regs.eax = 0x4f00; | |
1968 | + tsk->flags = TF_CALL | TF_GETVBEIB; | |
1969 | + tsk->buf = &vbe_ib; | |
1970 | + tsk->buf_len = sizeof(vbe_ib); | |
1971 | + if (vesafb_queue_task (tsk)) | |
1972 | + return -EINVAL; | |
1973 | + vesafb_wait_for_task(tsk); | |
1974 | + | |
1975 | + if (vbe_ib.vbe_version < 0x0200) { | |
1976 | + printk(KERN_ERR "vesafb: Sorry, pre-VBE 2.0 cards are " | |
1977 | + "not supported.\n"); | |
1978 | + return -EINVAL; | |
1979 | + } | |
1980 | + | |
1981 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { | |
1982 | + printk(KERN_ERR "vesafb: Getting mode info block failed " | |
1983 | + "(eax=0x%x)\n", (u32)tsk->regs.eax); | |
1984 | + return -EINVAL; | |
1985 | + } | |
1986 | + | |
1987 | + printk(KERN_INFO "vesafb: %s, %s, %s (OEM: %s)\n", | |
1988 | + (char*)vbe_ib.oem_vendor_name_ptr, | |
1989 | + (char*)vbe_ib.oem_product_name_ptr, | |
1990 | + (char*)vbe_ib.oem_product_rev_ptr, | |
1991 | + (char*)vbe_ib.oem_string_ptr); | |
1992 | + | |
1993 | + printk(KERN_INFO "vesafb: VBE version: %d.%d\n", | |
1994 | + ((vbe_ib.vbe_version & 0xff00) >> 8), | |
1995 | + vbe_ib.vbe_version & 0xff); | |
1996 | + return 0; | |
1997 | +} | |
1998 | + | |
1999 | +static int __init inline vesafb_vbe_getmodes(struct vesafb_task *tsk) | |
2000 | +{ | |
2001 | + u16 *mode = 0; | |
2002 | + int off = 0; | |
2003 | + | |
2004 | + /* Count available modes. */ | |
2005 | + mode = (u16*)vbe_ib.mode_list_ptr; | |
2006 | + while (*mode != 0xffff) { | |
2007 | + vbe_modes_cnt++; | |
2008 | + mode++; | |
2009 | + } | |
2010 | + | |
2011 | + vbe_modes = kmalloc(sizeof(struct vesafb_mode_ib)* | |
2012 | + vbe_modes_cnt, GFP_KERNEL); | |
2013 | + if (!vbe_modes) | |
2014 | + return -ENOMEM; | |
2015 | + | |
2016 | + /* Get mode info for all available modes. */ | |
2017 | + mode = (u16*)vbe_ib.mode_list_ptr; | |
2018 | + | |
2019 | + while (*mode != 0xffff) { | |
2020 | + struct vesafb_mode_ib *mib; | |
2021 | + | |
2022 | + vesafb_reset_task(tsk); | |
2023 | + tsk->regs.eax = 0x4f01; | |
2024 | + tsk->regs.ecx = (u32) *mode; | |
2025 | + tsk->flags = TF_CALL | TF_RETURN_BUF; | |
2026 | + tsk->buf = vbe_modes+off; | |
2027 | + tsk->buf_len = sizeof(struct vesafb_mode_ib); | |
2028 | + if (vesafb_queue_task(tsk)) | |
2029 | + return -EINVAL; | |
2030 | + vesafb_wait_for_task(tsk); | |
2031 | + mib = p_mode(tsk->buf); | |
2032 | + mib->mode_id = *mode; | |
2033 | + | |
2034 | + /* We only want modes that are supported with the currennt | |
2035 | + * hardware configuration (D0), color (D3), graphics (D4) | |
2036 | + * and that have support for the LFB (D7). */ | |
2037 | + if ((mib->mode_attr & 0x99) == 0x99 && | |
2038 | + mib->bits_per_pixel >= 8) { | |
2039 | + off++; | |
2040 | + } else { | |
2041 | + vbe_modes_cnt--; | |
2042 | + } | |
2043 | + mode++; | |
2044 | + mib->depth = mib->red_len + mib->green_len + mib->blue_len; | |
2045 | + /* Handle 8bpp modes and modes with broken color component | |
2046 | + * lengths. */ | |
2047 | + if (mib->depth == 0 || | |
2048 | + (mib->depth == 24 && mib->bits_per_pixel == 32)) | |
2049 | + mib->depth = mib->bits_per_pixel; | |
2050 | + } | |
2051 | + | |
2052 | + return 0; | |
2053 | +} | |
2054 | + | |
2055 | +static int __init inline vesafb_vbe_getpmi(struct vesafb_task *tsk) | |
2056 | +{ | |
2057 | + int i; | |
2058 | + | |
2059 | + vesafb_reset_task(tsk); | |
2060 | + tsk->regs.eax = 0x4f0a; | |
2061 | + tsk->regs.ebx = 0x0; | |
2062 | + tsk->flags = TF_CALL; | |
2063 | + if (vesafb_queue_task(tsk)) | |
2064 | + return -EINVAL; | |
2065 | + vesafb_wait_for_task(tsk); | |
2066 | + | |
2067 | + if ((tsk->regs.eax & 0xffff) != 0x004f || tsk->regs.es < 0xc000) { | |
2068 | + pmi_setpal = ypan = 0; | |
2069 | + } else { | |
2070 | + pmi_base = (u16*)phys_to_virt(((u32)tsk->regs.es << 4) + | |
2071 | + tsk->regs.edi); | |
2072 | + pmi_start = (void*)((char*)pmi_base + pmi_base[1]); | |
2073 | + pmi_pal = (void*)((char*)pmi_base + pmi_base[2]); | |
2074 | + printk(KERN_INFO "vesafb: protected mode interface info at " | |
2075 | + "%04x:%04x\n", | |
2076 | + (u16)tsk->regs.es, (u16)tsk->regs.edi); | |
2077 | + printk(KERN_INFO "vesafb: pmi: set display start = %p, " | |
2078 | + "set palette = %p\n", pmi_start, pmi_pal); | |
2079 | + | |
2080 | + if (pmi_base[3]) { | |
2081 | + printk(KERN_INFO "vesafb: pmi: ports = "); | |
2082 | + for (i = pmi_base[3]/2; pmi_base[i] != 0xffff; i++) | |
2083 | + printk("%x ",pmi_base[i]); | |
2084 | + printk("\n"); | |
2085 | + | |
2086 | + /* | |
2087 | + * memory areas not supported (yet?) | |
2088 | + * | |
2089 | + * Rules are: we have to set up a descriptor for the | |
2090 | + * requested memory area and pass it in the ES register | |
2091 | + * to the BIOS function. | |
2092 | + */ | |
2093 | + if (pmi_base[i] != 0xffff) { | |
2094 | + printk(KERN_INFO "vesafb: can't handle memory " | |
2095 | + "requests, pmi disabled\n"); | |
2096 | + ypan = pmi_setpal = 0; | |
2097 | + } | |
2098 | + } | |
2099 | + } | |
2100 | + return 0; | |
2101 | +} | |
2102 | + | |
2103 | +static int __init inline vesafb_vbe_getedid(struct vesafb_task *tsk, | |
2104 | + struct fb_info *info) | |
2105 | +{ | |
2106 | + int res = 0; | |
2107 | + | |
2108 | + if (noedid || vbe_ib.vbe_version < 0x0300) | |
2109 | + return -EINVAL; | |
2110 | + | |
2111 | + vesafb_reset_task(tsk); | |
2112 | + tsk->regs.eax = 0x4f15; | |
2113 | + tsk->regs.ebx = 0; | |
2114 | + tsk->regs.ecx = 0; | |
2115 | + if (vesafb_queue_task(tsk)) | |
2116 | + return -EINVAL; | |
2117 | + vesafb_wait_for_task(tsk); | |
2118 | + | |
2119 | + if ((tsk->regs.eax & 0xffff) != 0x004f) | |
2120 | + return -EINVAL; | |
2121 | + | |
2122 | + if ((tsk->regs.ebx & 0x3) == 3) { | |
2123 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports both " | |
2124 | + "DDC1 and DDC2 transfers\n"); | |
2125 | + } else if ((tsk->regs.ebx & 0x3) == 2) { | |
2126 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports DDC2 " | |
2127 | + "transfers\n"); | |
2128 | + } else if ((tsk->regs.ebx & 0x3) == 1) { | |
2129 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports DDC1 " | |
2130 | + "transfers\n"); | |
2131 | + } else { | |
2132 | + printk(KERN_INFO "vesafb: VBIOS/hardware doesn't support " | |
2133 | + "DDC transfers\n"); | |
2134 | + return -EINVAL; | |
2135 | + } | |
2136 | + | |
2137 | + vesafb_reset_task(tsk); | |
2138 | + tsk->regs.eax = 0x4f15; | |
2139 | + tsk->regs.ebx = 1; | |
2140 | + tsk->regs.ecx = tsk->regs.edx = 0; | |
2141 | + tsk->flags = TF_CALL | TF_RETURN_BUF; | |
2142 | + tsk->buf = kmalloc(EDID_LENGTH, GFP_KERNEL); | |
2143 | + tsk->buf_len = EDID_LENGTH; | |
2144 | + | |
2145 | + if (vesafb_queue_task(tsk)) { | |
2146 | + res = -EINVAL; | |
2147 | + goto out; | |
2148 | + } | |
2149 | + vesafb_wait_for_task(tsk); | |
2150 | + | |
2151 | + if ((tsk->regs.eax & 0xffff) == 0x004f) { | |
2152 | + fb_edid_to_monspecs(tsk->buf, &info->monspecs); | |
2153 | + fb_videomode_to_modelist(info->monspecs.modedb, | |
2154 | + info->monspecs.modedb_len, &info->modelist); | |
2155 | + if (info->monspecs.vfmax && info->monspecs.hfmax) { | |
2156 | + /* If the maximum pixel clock wasn't specified in | |
2157 | + * the EDID block, set it to 300 MHz. */ | |
2158 | + if (info->monspecs.dclkmax == 0) | |
2159 | + info->monspecs.dclkmax = 300 * 1000000; | |
2160 | + info->monspecs.gtf = 1; | |
2161 | + } else { | |
2162 | + res = -EINVAL; | |
2163 | + } | |
2164 | + } | |
2165 | + | |
2166 | +out: kfree(tsk->buf); | |
2167 | + return res; | |
2168 | +} | |
2169 | + | |
2170 | +static void __init inline vesafb_vbe_getmonspecs(struct vesafb_task *tsk, | |
2171 | + struct fb_info *info) | |
2172 | +{ | |
2173 | + struct fb_var_screeninfo var; | |
2174 | + int i; | |
2175 | + memset(&info->monspecs, 0, sizeof(struct fb_monspecs)); | |
2176 | + | |
2177 | + /* If we didn't get all necessary data from the EDID block, | |
2178 | + * mark it as incompatible with the GTF. */ | |
2179 | + if (vesafb_vbe_getedid(tsk, info)) | |
2180 | + info->monspecs.gtf = 0; | |
2181 | + | |
2182 | + /* Kernel command line overrides. */ | |
2183 | + if (maxclk) | |
2184 | + info->monspecs.dclkmax = maxclk * 1000000; | |
2185 | + if (maxvf) | |
2186 | + info->monspecs.vfmax = maxvf; | |
2187 | + if (maxhf) | |
2188 | + info->monspecs.hfmax = maxhf * 1000; | |
2189 | + | |
2190 | + /* In case DDC transfers are not supported the user can provide | |
2191 | + * monitor limits manually. Lower limits are set to "safe" values. */ | |
2192 | + if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) { | |
2193 | + info->monspecs.dclkmin = 0; | |
2194 | + info->monspecs.vfmin = 60; | |
2195 | + info->monspecs.hfmin = 29000; | |
2196 | + info->monspecs.gtf = 1; | |
2197 | + } | |
2198 | + | |
2199 | + if (info->monspecs.gtf) { | |
2200 | + printk(KERN_INFO | |
2201 | + "vesafb: monitor limits: vf = %d Hz, hf = %d kHz, " | |
2202 | + "clk = %d MHz\n", info->monspecs.vfmax, | |
2203 | + (int)(info->monspecs.hfmax / 1000), | |
2204 | + (int)(info->monspecs.dclkmax / 1000000)); | |
2205 | + /* Add valid VESA video modes to our modelist. */ | |
2206 | + for (i = 0; i < VESA_MODEDB_SIZE; i++) { | |
2207 | + fb_videomode_to_var(&var, (struct fb_videomode *) | |
2208 | + &vesa_modes[i]); | |
2209 | + if (!fb_validate_mode(&var, info)) | |
2210 | + fb_add_videomode((struct fb_videomode *) | |
2211 | + &vesa_modes[i], | |
2212 | + &info->modelist); | |
2213 | + } | |
2214 | + } else { | |
2215 | + /* Add all VESA video modes to our modelist. */ | |
2216 | + fb_videomode_to_modelist((struct fb_videomode *)vesa_modes, | |
2217 | + VESA_MODEDB_SIZE, &info->modelist); | |
2218 | + printk(KERN_INFO "vesafb: no monitor limits have been set\n"); | |
2219 | + } | |
2220 | + return; | |
2221 | +} | |
2222 | + | |
2223 | +static int __init inline vesafb_vbe_init(struct fb_info *info) | |
2224 | +{ | |
2225 | + struct vesafb_task *tsk; | |
2226 | + int res = 0; | |
2227 | + | |
2228 | + vesafb_create_task(tsk); | |
2229 | + if (!tsk) | |
2230 | + return -EINVAL; | |
2231 | + if ((res = vesafb_vbe_getinfo(tsk)) != 0) | |
2232 | + goto out; | |
2233 | + if ((res = vesafb_vbe_getmodes(tsk)) != 0) | |
2234 | + goto out; | |
2235 | + if (pmi_setpal || ypan) | |
2236 | + vesafb_vbe_getpmi(tsk); | |
2237 | + vesafb_vbe_getmonspecs(tsk, info); | |
2238 | +out: kfree(tsk); | |
2239 | + return res; | |
2240 | +} | |
2241 | + | |
2242 | +static int __init decode_mode(u32 *xres, u32 *yres, u32 *bpp, u32 *refresh) | |
2243 | +{ | |
2244 | + int len = strlen(mode_option), i, err = 0; | |
2245 | + u8 res_specified = 0, bpp_specified = 0, refresh_specified = 0, | |
2246 | + yres_specified = 0; | |
2247 | + | |
2248 | + for (i = len-1; i >= 0; i--) { | |
2249 | + switch (mode_option[i]) { | |
2250 | + case '@': | |
2251 | + len = i; | |
2252 | + if (!refresh_specified && !bpp_specified && | |
2253 | + !yres_specified) { | |
2254 | + *refresh = simple_strtoul(&mode_option[i+1], | |
2255 | + NULL, 0); | |
2256 | + refresh_specified = 1; | |
2257 | + } else | |
2258 | + goto out; | |
2259 | + break; | |
2260 | + case '-': | |
2261 | + len = i; | |
2262 | + if (!bpp_specified && !yres_specified) { | |
2263 | + *bpp = simple_strtoul(&mode_option[i+1], | |
2264 | + NULL, 0); | |
2265 | + bpp_specified = 1; | |
2266 | + } else | |
2267 | + goto out; | |
2268 | + break; | |
2269 | + case 'x': | |
2270 | + if (!yres_specified) { | |
2271 | + *yres = simple_strtoul(&mode_option[i+1], | |
2272 | + NULL, 0); | |
2273 | + yres_specified = 1; | |
2274 | + } else | |
2275 | + goto out; | |
2276 | + break; | |
2277 | + case '0'...'9': | |
2278 | + break; | |
2279 | + default: | |
2280 | + goto out; | |
2281 | + } | |
2282 | + } | |
2283 | + | |
2284 | + if (i < 0 && yres_specified) { | |
2285 | + *xres = simple_strtoul(mode_option, NULL, 0); | |
2286 | + res_specified = 1; | |
2287 | + } | |
2288 | + | |
2289 | +out: if (!res_specified || !yres_specified) { | |
2290 | + printk(KERN_ERR "vesafb: invalid resolution, " | |
2291 | + "%s not specified\n", | |
2292 | + (!res_specified) ? "width" : "height"); | |
2293 | + err = -EINVAL; | |
2294 | + } | |
2295 | + | |
2296 | + return err; | |
2297 | +} | |
2298 | + | |
2299 | +static int __init vesafb_init_set_mode(struct fb_info *info) | |
2300 | +{ | |
2301 | + struct fb_videomode *fbmode; | |
2302 | + struct fb_videomode mode; | |
2303 | + int i, modeid, refresh = 0; | |
2304 | + u8 refresh_specified = 0; | |
2305 | + | |
2306 | + if (!mode_option) | |
2307 | + mode_option = CONFIG_FB_VESA_DEFAULT_MODE; | |
2308 | + | |
2309 | + if (vbemode > 0) { | |
2310 | + for (i = 0; i < vbe_modes_cnt; i++) { | |
2311 | + if (vbe_modes[i].mode_id == vbemode) { | |
2312 | + info->var.vmode = FB_VMODE_NONINTERLACED; | |
2313 | + info->var.sync = FB_SYNC_VERT_HIGH_ACT; | |
2314 | + vesafb_setup_var(&info->var, info, | |
2315 | + &vbe_modes[i]); | |
2316 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, | |
2317 | + 60, &info->var, info); | |
2318 | + /* With pixclock set to 0, the default BIOS | |
2319 | + * timings will be used in set_par(). */ | |
2320 | + info->var.pixclock = 0; | |
2321 | + modeid = i; | |
2322 | + goto out; | |
2323 | + } | |
2324 | + } | |
2325 | + printk(KERN_INFO "specified VBE mode %d not found\n", | |
2326 | + vbemode); | |
2327 | + vbemode = 0; | |
2328 | + } | |
2329 | + | |
2330 | + /* Decode the mode specified on the kernel command line. We save | |
2331 | + * the depth into bits_per_pixel, which is wrong, but will work | |
2332 | + * anyway. */ | |
2333 | + if (decode_mode(&info->var.xres, &info->var.yres, | |
2334 | + &info->var.bits_per_pixel, &refresh)) | |
2335 | + return -EINVAL; | |
2336 | + if (refresh) | |
2337 | + refresh_specified = 1; | |
2338 | + else | |
2339 | + refresh = 60; | |
2340 | + | |
2341 | + /* Look for a matching VBE mode. We can live if an exact match | |
2342 | + * cannot be found. */ | |
2343 | + modeid = vesafb_find_vbe_mode(info->var.xres, info->var.yres, | |
2344 | + info->var.bits_per_pixel, 0); | |
2345 | + | |
2346 | + if (modeid == -1) { | |
2347 | + return -EINVAL; | |
2348 | + } else { | |
2349 | + info->var.vmode = FB_VMODE_NONINTERLACED; | |
2350 | + info->var.sync = FB_SYNC_VERT_HIGH_ACT; | |
2351 | + vesafb_setup_var(&info->var, info, &vbe_modes[modeid]); | |
2352 | + } | |
2353 | + if (vbe_ib.vbe_version < 0x0300) { | |
2354 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, | |
2355 | + &info->var, info); | |
2356 | + goto out; | |
2357 | + } | |
2358 | + if (!gtf) { | |
2359 | + struct fb_videomode tmode; | |
2360 | + | |
2361 | + if (refresh_specified) { | |
2362 | + fb_var_to_videomode(&tmode, &info->var); | |
2363 | + tmode.refresh = refresh; | |
2364 | + fbmode = fb_find_nearest_mode(&tmode, | |
2365 | + &info->modelist); | |
2366 | + } else | |
2367 | + fbmode = fb_find_best_mode(&info->var, | |
2368 | + &info->modelist); | |
2369 | + | |
2370 | + if (fbmode->xres == info->var.xres && | |
2371 | + fbmode->yres == info->var.yres && | |
2372 | + !(fbmode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE)) | |
2373 | + && (!refresh_specified || | |
2374 | + abs(refresh - fbmode->refresh) <= 5)) { | |
2375 | + fb_videomode_to_var(&info->var, fbmode); | |
2376 | + return modeid; | |
2377 | + } | |
2378 | + } | |
2379 | + i = FB_MAXTIMINGS; | |
2380 | + if (!info->monspecs.gtf) | |
2381 | + i = FB_IGNOREMON | FB_VSYNCTIMINGS; | |
2382 | + else if (refresh_specified) | |
2383 | + i = FB_VSYNCTIMINGS; | |
2384 | + if (!fb_get_mode(i, refresh, &info->var, info)) | |
2385 | + goto out; | |
2386 | + if (info->monspecs.gtf && | |
2387 | + !fb_get_mode(FB_MAXTIMINGS, 0, &info->var, info)) | |
2388 | + goto out; | |
2389 | + /* Use default refresh rate */ | |
2390 | + printk(KERN_WARNING "vesafb: using default BIOS refresh rate\n"); | |
2391 | + info->var.pixclock = 0; | |
2392 | + | |
2393 | +out: | |
2394 | + fb_var_to_videomode(&mode, &info->var); | |
2395 | + fb_add_videomode(&mode, &info->modelist); | |
2396 | + return modeid; | |
2397 | +} | |
2398 | + | |
2399 | +static int __init vesafb_probe(struct platform_device *dev) | |
2400 | +{ | |
2401 | + char entry[16]; | |
2402 | + struct fb_info *info; | |
2403 | + struct vesafb_mode_ib *mode = NULL; | |
2404 | + int err = 0, i, h; | |
2405 | + unsigned int size_vmode; | |
2406 | + unsigned int size_remap; | |
2407 | + unsigned int size_total; | |
2408 | + | |
2409 | + vesafb_info = info = framebuffer_alloc(sizeof(struct vesafb_par) + | |
2410 | + sizeof(u32) * 256, &dev->dev); | |
2411 | + if (!info) | |
2412 | + return -ENOMEM; | |
2413 | + | |
2414 | + if (vesafb_wait_for_thread()) { | |
2415 | + printk(KERN_ERR "vesafb: vesafb thread not running\n"); | |
2416 | + framebuffer_release(info); | |
2417 | + return -EINVAL; | |
2418 | + } | |
2419 | + | |
2420 | + if (vesafb_vbe_init(info)) { | |
2421 | + printk(KERN_ERR "vesafb: vbe_init failed\n"); | |
2422 | + err = -EINVAL; | |
2423 | + goto out; | |
2424 | + } | |
2425 | + | |
2426 | + vesafb_fix.ypanstep = ypan ? 1 : 0; | |
2427 | + vesafb_fix.ywrapstep = (ypan>1) ? 1 : 0; | |
2428 | + | |
2429 | + info->pseudo_palette = ((u8*)info->par + sizeof(struct vesafb_par)); | |
2430 | + info->fbops = &vesafb_ops; | |
2431 | + info->var = vesafb_defined; | |
2432 | + info->fix = vesafb_fix; | |
2433 | + | |
2434 | + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { | |
2435 | + err = -ENXIO; | |
2436 | + goto out; | |
2437 | + } | |
2438 | + | |
2439 | + i = vesafb_init_set_mode(info); | |
2440 | + if (i < 0) { | |
2441 | + err = -EINVAL; | |
2442 | + goto out_cmap; | |
2443 | + } else | |
2444 | + mode = &vbe_modes[i]; | |
2445 | + | |
2446 | + /* Disable blanking if the user requested so. */ | |
2447 | + if (!blank) { | |
2448 | + info->fbops->fb_blank = NULL; | |
2449 | + } | |
2450 | + | |
2451 | + /* Find out how much IO memory is required for the mode with | |
2452 | + * the highest resolution. */ | |
2453 | + size_remap = 0; | |
2454 | + for (i = 0; i < vbe_modes_cnt; i++) { | |
2455 | + h = vbe_modes[i].bytes_per_scan_line * vbe_modes[i].y_res; | |
2456 | + if (h > size_remap) | |
2457 | + size_remap = h; | |
2458 | + } | |
2459 | + size_remap *= 2; | |
2460 | + | |
2461 | + /* size_vmode -- that is the amount of memory needed for the | |
2462 | + * used video mode, i.e. the minimum amount of | |
2463 | + * memory we need. */ | |
2464 | + if (mode != NULL) { | |
2465 | + size_vmode = info->var.yres * mode->bytes_per_scan_line; | |
2466 | + } else { | |
2467 | + size_vmode = info->var.yres * info->var.xres * | |
2468 | + ((info->var.bits_per_pixel + 7) >> 3); | |
2469 | + } | |
2470 | + | |
2471 | + /* size_total -- all video memory we have. Used for mtrr | |
2472 | + * entries, ressource allocation and bounds | |
2473 | + * checking. */ | |
2474 | + size_total = vbe_ib.total_memory * 65536; | |
2475 | + if (vram_total) | |
2476 | + size_total = vram_total * 1024 * 1024; | |
2477 | + if (size_total < size_vmode) | |
2478 | + size_total = size_vmode; | |
2479 | + ((struct vesafb_par*)(info->par))->mem_total = size_total; | |
2480 | + | |
2481 | + /* size_remap -- the amount of video memory we are going to | |
2482 | + * use for vesafb. With modern cards it is no | |
2483 | + * option to simply use size_total as th | |
2484 | + * wastes plenty of kernel address space. */ | |
2485 | + if (vram_remap) | |
2486 | + size_remap = vram_remap * 1024 * 1024; | |
2487 | + if (size_remap < size_vmode) | |
2488 | + size_remap = size_vmode; | |
2489 | + if (size_remap > size_total) | |
2490 | + size_remap = size_total; | |
2491 | + | |
2492 | + info->fix.smem_len = size_remap; | |
2493 | + info->fix.smem_start = mode->phys_base_ptr; | |
2494 | + | |
2495 | + /* We have to set it here, because when setup_var() was called, | |
2496 | + * smem_len wasn't defined yet. */ | |
2497 | + info->var.yres_virtual = info->fix.smem_len / | |
2498 | + mode->bytes_per_scan_line; | |
2499 | + | |
2500 | + if (ypan && info->var.yres_virtual > info->var.yres) { | |
2501 | + printk(KERN_INFO "vesafb: scrolling: %s " | |
2502 | + "using protected mode interface, " | |
2503 | + "yres_virtual=%d\n", | |
2504 | + (ypan > 1) ? "ywrap" : "ypan",info->var.yres_virtual); | |
2505 | + } else { | |
2506 | + printk(KERN_INFO "vesafb: scrolling: redraw\n"); | |
2507 | + info->var.yres_virtual = info->var.yres; | |
2508 | + ypan = 0; | |
2509 | + } | |
2510 | + | |
2511 | + info->flags = FBINFO_FLAG_DEFAULT | | |
2512 | + (ypan) ? FBINFO_HWACCEL_YPAN : 0; | |
2513 | + | |
2514 | + if (!ypan) | |
2515 | + info->fbops->fb_pan_display = NULL; | |
2516 | + | |
2517 | + if (!request_mem_region(info->fix.smem_start, size_total, "vesafb")) { | |
2518 | + printk(KERN_WARNING "vesafb: cannot reserve video memory at " | |
2519 | + "0x%lx\n", info->fix.smem_start); | |
2520 | + /* We cannot make this fatal. Sometimes this comes from magic | |
2521 | + spaces our resource handlers simply don't know about. */ | |
2522 | + } | |
2523 | + | |
2524 | + info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); | |
2525 | + | |
2526 | + if (!info->screen_base) { | |
2527 | + printk(KERN_ERR | |
2528 | + "vesafb: abort, cannot ioremap video memory " | |
2529 | + "0x%x @ 0x%lx\n", | |
2530 | + info->fix.smem_len, info->fix.smem_start); | |
2531 | + err = -EIO; | |
2532 | + goto out_mem; | |
2533 | + } | |
2534 | + | |
2535 | + /* Request failure does not faze us, as vgacon probably has this | |
2536 | + region already (FIXME) */ | |
2537 | + request_region(0x3c0, 32, "vesafb"); | |
2538 | + | |
2539 | +#ifdef CONFIG_MTRR | |
2540 | + if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) { | |
2541 | + int temp_size = size_total; | |
2542 | + unsigned int type = 0; | |
2543 | + | |
2544 | + switch (mtrr) { | |
2545 | + case 1: | |
2546 | + type = MTRR_TYPE_UNCACHABLE; | |
2547 | + break; | |
2548 | + case 2: | |
2549 | + type = MTRR_TYPE_WRBACK; | |
2550 | + break; | |
2551 | + case 3: | |
2552 | + type = MTRR_TYPE_WRCOMB; | |
2553 | + break; | |
2554 | + case 4: | |
2555 | + type = MTRR_TYPE_WRTHROUGH; | |
2556 | + break; | |
2557 | + default: | |
2558 | + type = 0; | |
2559 | + break; | |
2560 | + } | |
2561 | + | |
2562 | + if (type) { | |
2563 | + int rc; | |
2564 | + | |
2565 | + /* Find the largest power-of-two */ | |
2566 | + while (temp_size & (temp_size - 1)) | |
2567 | + temp_size &= (temp_size - 1); | |
2568 | + | |
2569 | + /* Try and find a power of two to add */ | |
2570 | + do { | |
2571 | + rc = mtrr_add(info->fix.smem_start, | |
2572 | + temp_size, type, 1); | |
2573 | + temp_size >>= 1; | |
2574 | + } while (temp_size >= PAGE_SIZE && rc == -EINVAL); | |
2575 | + } | |
2576 | + } | |
2577 | +#endif /* CONFIG_MTRR */ | |
2578 | + | |
2579 | + if (register_framebuffer(info) < 0) { | |
2580 | + printk(KERN_ERR | |
2581 | + "vesafb: failed to register framebuffer device\n"); | |
2582 | + err = -EINVAL; | |
2583 | + goto out_mem; | |
2584 | + } | |
2585 | + | |
2586 | + printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, " | |
2587 | + "using %dk, total %dk\n", info->fix.smem_start, | |
2588 | + info->screen_base, size_remap/1024, size_total/1024); | |
2589 | + printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
2590 | + info->fix.id); | |
2591 | + | |
2592 | + sprintf(entry, "fb%d", info->node); | |
2593 | + proc_mkdir(entry, 0); | |
2594 | + | |
2595 | + sprintf(entry, "fb%d/modes", info->node); | |
2596 | + create_proc_read_entry(entry, 0, 0, vesafb_read_proc_modes, NULL); | |
2597 | + | |
2598 | + sprintf(entry, "fb%d/vbe_info", info->node); | |
2599 | + create_proc_read_entry(entry, 0, 0, vesafb_read_proc_vbe_info, NULL); | |
2600 | + return 0; | |
2601 | + | |
2602 | +out_mem: | |
2603 | + release_mem_region(info->fix.smem_start, size_total); | |
2604 | + if (!list_empty(&info->modelist)) | |
2605 | + fb_destroy_modelist(&info->modelist); | |
2606 | + fb_destroy_modedb(info->monspecs.modedb); | |
2607 | +out_cmap: | |
2608 | + fb_dealloc_cmap(&info->cmap); | |
2609 | +out: | |
2610 | + framebuffer_release(info); | |
2611 | + vesafb_info = NULL; | |
2612 | + kfree(vbe_modes); | |
2613 | + vbe_modes = NULL; | |
2614 | + return err; | |
2615 | +} | |
2616 | + | |
2617 | +int __init vesafb_init(void) | |
2618 | +{ | |
2619 | + int ret; | |
2620 | +#ifndef MODULE | |
2621 | + char *option = NULL; | |
2622 | + | |
2623 | + if (fb_get_options("vesafb", &option)) | |
2624 | + return -ENODEV; | |
2625 | + vesafb_setup(option); | |
2626 | +#endif | |
2627 | + ret = platform_driver_register(&vesafb_driver); | |
2628 | + | |
2629 | + if (!ret) { | |
2630 | + ret = platform_device_register(&vesafb_device); | |
2631 | + if (ret) | |
2632 | + platform_driver_unregister(&vesafb_driver); | |
2633 | + } | |
2634 | + return ret; | |
2635 | +} | |
2636 | + | |
2637 | +module_init(vesafb_init); | |
2638 | + | |
2639 | +#ifdef MODULE | |
2640 | +void __exit vesafb_exit(void) | |
2641 | +{ | |
2642 | + char entry[16]; | |
2643 | + | |
2644 | + if (vesafb_info) | |
2645 | + unregister_framebuffer(vesafb_info); | |
2646 | + | |
2647 | + platform_device_unregister(&vesafb_device); | |
2648 | + platform_driver_unregister(&vesafb_driver); | |
2649 | + | |
2650 | + if (vesafb_info) { | |
2651 | + struct vesafb_par *par = (struct vesafb_par*)vesafb_info->par; | |
2652 | + | |
2653 | + sprintf(entry, "fb%d/modes", vesafb_info->node); | |
2654 | + remove_proc_entry(entry, NULL); | |
2655 | + | |
2656 | + sprintf(entry, "fb%d/vbe_info", vesafb_info->node); | |
2657 | + remove_proc_entry(entry, NULL); | |
2658 | + | |
2659 | + sprintf(entry, "fb%d", vesafb_info->node); | |
2660 | + remove_proc_entry(entry, NULL); | |
2661 | + | |
2662 | + iounmap(vesafb_info->screen_base); | |
2663 | + release_mem_region(vesafb_info->fix.smem_start, | |
2664 | + par->mem_total); | |
2665 | + fb_dealloc_cmap(&vesafb_info->cmap); | |
2666 | + if (!list_empty(&vesafb_info->modelist)) | |
2667 | + fb_destroy_modelist(&vesafb_info->modelist); | |
2668 | + fb_destroy_modedb(vesafb_info->monspecs.modedb); | |
2669 | + framebuffer_release(vesafb_info); | |
2670 | + } | |
2671 | + | |
2672 | + if (vbe_modes != NULL) | |
2673 | + kfree(vbe_modes); | |
2674 | +} | |
2675 | + | |
2676 | +module_exit(vesafb_exit); | |
2677 | + | |
2678 | +static inline int param_get_scroll(char *buffer, struct kernel_param *kp) | |
2679 | +{ | |
2680 | + return 0; | |
2681 | +} | |
2682 | +static inline int param_set_scroll(const char *val, struct kernel_param *kp) | |
2683 | +{ | |
2684 | + ypan = 0; | |
2685 | + | |
2686 | + if (! strcmp(val, "redraw")) | |
2687 | + ypan = 0; | |
2688 | + else if (! strcmp(val, "ypan")) | |
2689 | + ypan = 1; | |
2690 | + else if (! strcmp(val, "ywrap")) | |
2691 | + ypan = 2; | |
2692 | + | |
2693 | + return 0; | |
2694 | +} | |
2695 | + | |
2696 | +#define param_check_scroll(name, p) __param_check(name, p, void); | |
2697 | + | |
2698 | +module_param_named(scroll, ypan, scroll, 0); | |
2699 | +MODULE_PARM_DESC(scroll,"Scrolling mode, set to 'redraw', 'ypan' or 'ywrap'"); | |
2700 | +module_param_named(vgapal, pmi_setpal, invbool, 0); | |
2701 | +MODULE_PARM_DESC(vgapal,"bool: set palette using VGA registers"); | |
2702 | +module_param_named(pmipal, pmi_setpal, bool, 0); | |
2703 | +MODULE_PARM_DESC(pmipal,"bool: set palette using PMI calls"); | |
2704 | +module_param_named(nomtrr, mtrr, invbool, 0); | |
2705 | +MODULE_PARM_DESC(nomtrr,"bool: disable use of MTRR registers"); | |
2706 | +module_param(blank, bool, 1); | |
2707 | +MODULE_PARM_DESC(blank,"bool: enable hardware blanking"); | |
2708 | +module_param(nocrtc, bool, 0); | |
2709 | +MODULE_PARM_DESC(nocrtc,"bool: ignore CRTC timings when setting modes"); | |
2710 | +module_param(noedid, bool, 0); | |
2711 | +MODULE_PARM_DESC(noedid,"bool: ignore EDID-provided monitor limits " | |
2712 | + "when setting modes"); | |
2713 | +module_param(gtf, bool, 0); | |
2714 | +MODULE_PARM_DESC(gtf,"bool: force use of VESA GTF to calculate mode timings"); | |
2715 | +module_param(vram_remap, uint, 0); | |
2716 | +MODULE_PARM_DESC(vram_remap,"Set amount of video memory to be used [MiB]"); | |
2717 | +module_param(vram_total, uint, 0); | |
2718 | +MODULE_PARM_DESC(vram_total,"Set total amount of video memoery [MiB]"); | |
2719 | +module_param(maxclk, ushort, 0); | |
2720 | +MODULE_PARM_DESC(maxclk,"Maximum pixelclock [MHz], overrides EDID data"); | |
2721 | +module_param(maxhf, ushort, 0); | |
2722 | +MODULE_PARM_DESC(maxhf,"Maximum horizontal frequency [kHz], " | |
2723 | + "overrides EDID data"); | |
2724 | +module_param(maxvf, ushort, 0); | |
2725 | +MODULE_PARM_DESC(maxvf,"Maximum vertical frequency [Hz], " | |
2726 | + "overrides EDID data"); | |
2727 | +module_param_named(mode, mode_option, charp, 0); | |
2728 | +MODULE_PARM_DESC(mode, "Specify resolution as " | |
2729 | + "\"<xres>x<yres>[-<bpp>][@<refresh>]\""); | |
2730 | +module_param(vbemode, ushort, 0); | |
2731 | +MODULE_PARM_DESC(vbemode,"VBE mode number to set, overrides 'mode' setting"); | |
2732 | + | |
2733 | +#endif /* MODULE */ | |
2734 | + | |
2735 | +MODULE_LICENSE("GPL"); | |
2736 | +MODULE_AUTHOR("Michal Januszewski"); | |
2737 | +MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards"); | |
2738 | + | |
2739 | diff --git a/include/linux/sched.h b/include/linux/sched.h | |
2740 | index 62e6314..91920b6 100644 | |
2741 | --- a/include/linux/sched.h | |
2742 | +++ b/include/linux/sched.h | |
2743 | @@ -1140,6 +1140,8 @@ extern void mmput(struct mm_struct *); | |
2744 | extern struct mm_struct *get_task_mm(struct task_struct *task); | |
2745 | /* Remove the current tasks stale references to the old mm_struct */ | |
2746 | extern void mm_release(struct task_struct *, struct mm_struct *); | |
2747 | +/* Create a new mm for a kernel thread */ | |
2748 | +extern int set_new_mm(void); | |
2749 | ||
2750 | extern int copy_thread(int, unsigned long, unsigned long, unsigned long, struct task_struct *, struct pt_regs *); | |
2751 | extern void flush_thread(void); | |
2752 | diff --git a/include/video/vesa.h b/include/video/vesa.h | |
2753 | new file mode 100644 | |
2754 | index 0000000..c274604 | |
2755 | --- /dev/null | |
2756 | +++ b/include/video/vesa.h | |
2757 | @@ -0,0 +1,146 @@ | |
2758 | +#if 0 | |
2759 | +#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , \ | |
2760 | + ## args) | |
2761 | +#else | |
2762 | +#define DPRINTK(fmt, args...) | |
2763 | +#endif | |
2764 | + | |
2765 | +#define p_crtc(arg) ((struct vesafb_crtc_ib*)(arg)) | |
2766 | +#define p_vbe(arg) ((struct vesafb_vbe_ib*)(arg)) | |
2767 | +#define p_mode(arg) ((struct vesafb_mode_ib*)(arg)) | |
2768 | + | |
2769 | +struct vesafb_task { | |
2770 | + u8 flags; | |
2771 | + void *buf; | |
2772 | + int buf_len; | |
2773 | + struct vm86_regs regs; | |
2774 | + struct list_head node; | |
2775 | + struct completion done; | |
2776 | +}; | |
2777 | + | |
2778 | +/* Vesafb task flags and masks */ | |
2779 | +#define TF_CALL 0x00 | |
2780 | +#define TF_EXIT 0x01 | |
2781 | +#define TF_GETVBEIB 0x02 | |
2782 | +#define TF_USE_BUF 0x04 | |
2783 | +#define TF_RETURN_BUF 0x08 | |
2784 | +#define TF_MASK_BUF (TF_USE_BUF | TF_RETURN_BUF) | |
2785 | + | |
2786 | +/* Macros and functions for manipulating vesafb tasks */ | |
2787 | +#define vesafb_create_task(task) \ | |
2788 | +do { \ | |
2789 | + task = kmalloc(sizeof(struct vesafb_task), GFP_ATOMIC); \ | |
2790 | + if (task) \ | |
2791 | + memset(task, 0, sizeof(struct vesafb_task)); \ | |
2792 | + init_completion(&task->done); \ | |
2793 | +} while (0) | |
2794 | + | |
2795 | +#define vesafb_wait_for_task(task) wait_for_completion(&task->done); | |
2796 | +#define vesafb_reset_task(task) init_completion(&task->done); | |
2797 | +int vesafb_queue_task(struct vesafb_task *task); | |
2798 | + | |
2799 | +/* Functions for controlling the vesafb thread */ | |
2800 | +int vesafb_wait_for_thread(void); | |
2801 | + | |
2802 | +#define VBE_CAP_CAN_SWITCH_DAC 0x01 | |
2803 | +#define VBE_CAP_VGACOMPAT 0x02 | |
2804 | + | |
2805 | +/* This struct is 512 bytes long */ | |
2806 | +struct vesafb_vbe_ib { | |
2807 | + char vbe_signature[4]; | |
2808 | + u16 vbe_version; | |
2809 | + u32 oem_string_ptr; | |
2810 | + u32 capabilities; | |
2811 | + u32 mode_list_ptr; | |
2812 | + u16 total_memory; | |
2813 | + u16 oem_software_rev; | |
2814 | + u32 oem_vendor_name_ptr; | |
2815 | + u32 oem_product_name_ptr; | |
2816 | + u32 oem_product_rev_ptr; | |
2817 | + u8 reserved[222]; | |
2818 | + char oem_data[256]; | |
2819 | +} __attribute__ ((packed)); | |
2820 | + | |
2821 | +struct vesafb_crtc_ib { | |
2822 | + u16 horiz_total; | |
2823 | + u16 horiz_start; | |
2824 | + u16 horiz_end; | |
2825 | + u16 vert_total; | |
2826 | + u16 vert_start; | |
2827 | + u16 vert_end; | |
2828 | + u8 flags; | |
2829 | + u32 pixel_clock; | |
2830 | + u16 refresh_rate; | |
2831 | + u8 reserved[40]; | |
2832 | +} __attribute__ ((packed)); | |
2833 | + | |
2834 | +#define VBE_MODE_VGACOMPAT 0x20 | |
2835 | + | |
2836 | +struct vesafb_mode_ib { | |
2837 | + /* for all VBE revisions */ | |
2838 | + u16 mode_attr; | |
2839 | + u8 winA_attr; | |
2840 | + u8 winB_attr; | |
2841 | + u16 win_granularity; | |
2842 | + u16 win_size; | |
2843 | + u16 winA_seg; | |
2844 | + u16 winB_seg; | |
2845 | + u32 win_func_ptr; | |
2846 | + u16 bytes_per_scan_line; | |
2847 | + | |
2848 | + /* for VBE 1.2+ */ | |
2849 | + u16 x_res; | |
2850 | + u16 y_res; | |
2851 | + u8 x_char_size; | |
2852 | + u8 y_char_size; | |
2853 | + u8 planes; | |
2854 | + u8 bits_per_pixel; | |
2855 | + u8 banks; | |
2856 | + u8 memory_model; | |
2857 | + u8 bank_size; | |
2858 | + u8 image_pages; | |
2859 | + u8 reserved1; | |
2860 | + | |
2861 | + /* Direct color fields for direct/6 and YUV/7 memory models. */ | |
2862 | + /* Offsets are bit positions of lsb in the mask. */ | |
2863 | + u8 red_len; | |
2864 | + u8 red_off; | |
2865 | + u8 green_len; | |
2866 | + u8 green_off; | |
2867 | + u8 blue_len; | |
2868 | + u8 blue_off; | |
2869 | + u8 rsvd_len; | |
2870 | + u8 rsvd_off; | |
2871 | + u8 direct_color_info; /* direct color mode attributes */ | |
2872 | + | |
2873 | + /* for VBE 2.0+ */ | |
2874 | + u32 phys_base_ptr; | |
2875 | + u8 reserved2[6]; | |
2876 | + | |
2877 | + /* for VBE 3.0+ */ | |
2878 | + u16 lin_bytes_per_scan_line; | |
2879 | + u8 bnk_image_pages; | |
2880 | + u8 lin_image_pages; | |
2881 | + u8 lin_red_len; | |
2882 | + u8 lin_red_off; | |
2883 | + u8 lin_green_len; | |
2884 | + u8 lin_green_off; | |
2885 | + u8 lin_blue_len; | |
2886 | + u8 lin_blue_off; | |
2887 | + u8 lin_rsvd_len; | |
2888 | + u8 lin_rsvd_off; | |
2889 | + u32 max_pixel_clock; | |
2890 | + u16 mode_id; | |
2891 | + u8 depth; | |
2892 | +} __attribute__ ((packed)); | |
2893 | + | |
2894 | +struct vesafb_pal_entry { | |
2895 | + u_char blue, green, red, pad; | |
2896 | +} __attribute__ ((packed)); | |
2897 | + | |
2898 | +struct vesafb_par { | |
2899 | + u32 mem_total; | |
2900 | + int mode_idx; | |
2901 | + struct vesafb_crtc_ib crtc; | |
2902 | +}; | |
2903 | + | |
2904 | diff --git a/kernel/fork.c b/kernel/fork.c | |
2905 | index b373322..49d16cf 100644 | |
2906 | --- a/kernel/fork.c | |
2907 | +++ b/kernel/fork.c | |
2908 | @@ -97,6 +97,7 @@ kmem_cache_t *fs_cachep; | |
2909 | ||
2910 | /* SLAB cache for vm_area_struct structures */ | |
2911 | kmem_cache_t *vm_area_cachep; | |
2912 | +EXPORT_SYMBOL_GPL(vm_area_cachep); | |
2913 | ||
2914 | /* SLAB cache for mm_struct structures (tsk->mm) */ | |
2915 | static kmem_cache_t *mm_cachep; | |
2916 | @@ -385,6 +386,40 @@ void mmput(struct mm_struct *mm) | |
2917 | EXPORT_SYMBOL_GPL(mmput); | |
2918 | ||
2919 | /** | |
2920 | + * set_new_mm - allocate, init and activate a new mm for a kernel thread | |
2921 | + */ | |
2922 | +int set_new_mm(void) | |
2923 | +{ | |
2924 | + struct mm_struct *mm; | |
2925 | + struct task_struct *tsk = current; | |
2926 | + struct mm_struct *active_mm; | |
2927 | + | |
2928 | + mm = mm_alloc(); | |
2929 | + if (!mm) | |
2930 | + goto fail_nomem; | |
2931 | + if (init_new_context(current,mm)) | |
2932 | + goto fail_nocontext; | |
2933 | + | |
2934 | + task_lock(tsk); | |
2935 | + tsk->flags |= PF_BORROWED_MM; | |
2936 | + active_mm = tsk->active_mm; | |
2937 | + current->mm = mm; | |
2938 | + current->active_mm = mm; | |
2939 | + activate_mm(active_mm, mm); | |
2940 | + task_unlock(current); | |
2941 | + | |
2942 | + /* Drop the previous active_mm */ | |
2943 | + mmdrop(active_mm); | |
2944 | + return 0; | |
2945 | + | |
2946 | +fail_nocontext: | |
2947 | + mmdrop(mm); | |
2948 | +fail_nomem: | |
2949 | + return -EINVAL; | |
2950 | +} | |
2951 | +EXPORT_SYMBOL_GPL(set_new_mm); | |
2952 | + | |
2953 | +/** | |
2954 | * get_task_mm - acquire a reference to the task's mm | |
2955 | * | |
2956 | * Returns %NULL if the task has no mm. Checks PF_BORROWED_MM (meaning | |
2957 | diff --git a/mm/memory.c b/mm/memory.c | |
2958 | index 85e80a5..5a7871a 100644 | |
2959 | --- a/mm/memory.c | |
2960 | +++ b/mm/memory.c | |
2961 | @@ -1163,6 +1163,7 @@ int zeromap_page_range(struct vm_area_st | |
2962 | } while (pgd++, addr = next, addr != end); | |
2963 | return err; | |
2964 | } | |
2965 | +EXPORT_SYMBOL_GPL(zeromap_page_range); | |
2966 | ||
2967 | pte_t * fastcall get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl) | |
2968 | { | |
2969 | diff --git a/mm/mmap.c b/mm/mmap.c | |
2970 | index 47556d2..c94ec36 100644 | |
2971 | --- a/mm/mmap.c | |
2972 | +++ b/mm/mmap.c | |
2973 | @@ -1991,6 +1991,7 @@ int insert_vm_struct(struct mm_struct * | |
2974 | vma_link(mm, vma, prev, rb_link, rb_parent); | |
2975 | return 0; | |
2976 | } | |
2977 | +EXPORT_SYMBOL_GPL(insert_vm_struct); | |
2978 | ||
2979 | /* | |
2980 | * Copy the vma structure to a new location in the same mm, |