Contents of /trunk/kernel26-alx/patches-2.6.20-r6/0151-2.6.20-vesafb-tng-1.0-rc2-2.6.20-rc2.patch
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Thu Oct 14 12:15:46 2010 UTC (13 years, 11 months ago) by niro
File size: 90982 byte(s)
Thu Oct 14 12:15:46 2010 UTC (13 years, 11 months ago) by niro
File size: 90982 byte(s)
-2.6.20-alx-r6 new magellan 0.5.2 kernel
1 | diff --git a/Documentation/fb/vesafb.txt b/Documentation/fb/vesafb.txt |
2 | index ee277dd..93d6e6e 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 | +VESA BIOS Extensions Version 2.0 are required, because we need access to |
16 | +a linear frame buffer. VBE 3.0 is required if you want to use modes with a |
17 | +higher (than the standard 60 Hz) refresh rate. |
18 | |
19 | -This means we decide at boot time whenever we want to run in text or |
20 | -graphics mode. Switching mode later on (in protected mode) is |
21 | -impossible; BIOS calls work in real mode only. VESA BIOS Extensions |
22 | -Version 2.0 are required, because we need a linear frame buffer. |
23 | +The VESA framebuffer driver comes in two flavors - the standard 'vesafb' |
24 | +and 'vesafb-tng'. Vesafb-tng is available only on 32-bit x86 due to the |
25 | +technology it uses (vm86). Vesafb-tng has more features than vesafb |
26 | +(adjusting the refresh rate on VBE 3.0 compliant boards, switching the |
27 | +video mode without rebooting, selecting a mode by providing its |
28 | +modedb name, and more). |
29 | |
30 | Advantages: |
31 | |
32 | @@ -29,26 +31,35 @@ Disadvantages: |
33 | How to use it? |
34 | ============== |
35 | |
36 | -Switching modes is done using the vga=... boot parameter. Read |
37 | -Documentation/svga.txt for details. |
38 | +If you are running a 32-bit x86 system and you decide to use vesafb-tng, |
39 | +you can either compile the driver into the kernel or use it as a module. |
40 | +The graphics mode you want to use is in both cases specified using the |
41 | +standard modedb format. |
42 | |
43 | -You should compile in both vgacon (for text mode) and vesafb (for |
44 | -graphics mode). Which of them takes over the console depends on |
45 | -whenever the specified mode is text or graphics. |
46 | +If your system doesn't support vm86 calls, things get a little more tricky. |
47 | +Since on such systems you can't do BIOS calls from protected mode in which |
48 | +kernel runs, you have to decide at boot time whenever you want to run in text |
49 | +or in graphics mode. Switching mode later on is impossible. Switching modes |
50 | +is done using the vga=... boot parameter. Read Documentation/svga.txt for |
51 | +details. Below is a more detailed description of what to do on systems using |
52 | +the standard vesafb driver. |
53 | |
54 | -The graphic modes are NOT in the list which you get if you boot with |
55 | -vga=ask and hit return. The mode you wish to use is derived from the |
56 | -VESA mode number. Here are those VESA mode numbers: |
57 | +You should compile in both vgacon (for text mode) and vesafb (for graphics |
58 | +mode). Which of them takes over the console depends on whenever the |
59 | +specified mode is text or graphics. |
60 | + |
61 | +The graphic modes are NOT in the list which you get if you boot with vga=ask |
62 | +and hit return. The mode you wish to use is derived from the VESA mode number. |
63 | +Here are those VESA mode numbers: |
64 | |
65 | | 640x480 800x600 1024x768 1280x1024 |
66 | ----+------------------------------------- |
67 | -256 | 0x101 0x103 0x105 0x107 |
68 | -32k | 0x110 0x113 0x116 0x119 |
69 | -64k | 0x111 0x114 0x117 0x11A |
70 | -16M | 0x112 0x115 0x118 0x11B |
71 | +256 | 0x101 0x103 0x105 0x107 |
72 | +32k | 0x110 0x113 0x116 0x119 |
73 | +64k | 0x111 0x114 0x117 0x11A |
74 | +16M | 0x112 0x115 0x118 0x11B |
75 | |
76 | -The video mode number of the Linux kernel is the VESA mode number plus |
77 | -0x200. |
78 | +The video mode number of the Linux kernel is the VESA mode number plus 0x200. |
79 | |
80 | Linux_kernel_mode_number = VESA_mode_number + 0x200 |
81 | |
82 | @@ -56,15 +67,15 @@ So the table for the Kernel mode numbers are: |
83 | |
84 | | 640x480 800x600 1024x768 1280x1024 |
85 | ----+------------------------------------- |
86 | -256 | 0x301 0x303 0x305 0x307 |
87 | -32k | 0x310 0x313 0x316 0x319 |
88 | -64k | 0x311 0x314 0x317 0x31A |
89 | -16M | 0x312 0x315 0x318 0x31B |
90 | +256 | 0x301 0x303 0x305 0x307 |
91 | +32k | 0x310 0x313 0x316 0x319 |
92 | +64k | 0x311 0x314 0x317 0x31A |
93 | +16M | 0x312 0x315 0x318 0x31B |
94 | |
95 | -To enable one of those modes you have to specify "vga=ask" in the |
96 | -lilo.conf file and rerun LILO. Then you can type in the desired |
97 | -mode at the "vga=ask" prompt. For example if you like to use |
98 | -1024x768x256 colors you have to say "305" at this prompt. |
99 | +To enable one of those modes you have to specify "vga=ask" in the lilo.conf |
100 | +file and rerun LILO. Then you can type in the desired mode at the "vga=ask" |
101 | +prompt. For example if you like to use 1024x768x256 colors you have to say |
102 | +"305" at this prompt. |
103 | |
104 | If this does not work, this might be because your BIOS does not support |
105 | linear framebuffers or because it does not support this mode at all. |
106 | @@ -72,11 +83,12 @@ Even if your board does, it might be the BIOS which does not. VESA BIOS |
107 | Extensions v2.0 are required, 1.2 is NOT sufficient. You will get a |
108 | "bad mode number" message if something goes wrong. |
109 | |
110 | -1. Note: LILO cannot handle hex, for booting directly with |
111 | +1. Note: LILO cannot handle hex, for booting directly with |
112 | "vga=mode-number" you have to transform the numbers to decimal. |
113 | 2. Note: Some newer versions of LILO appear to work with those hex values, |
114 | if you set the 0x in front of the numbers. |
115 | |
116 | + |
117 | X11 |
118 | === |
119 | |
120 | @@ -84,98 +96,164 @@ XF68_FBDev should work just fine, but it is non-accelerated. Running |
121 | another (accelerated) X-Server like XF86_SVGA might or might not work. |
122 | It depends on X-Server and graphics board. |
123 | |
124 | -The X-Server must restore the video mode correctly, else you end up |
125 | +The X-Server must restore the video mode correctly, or else you end up |
126 | with a broken console (and vesafb cannot do anything about this). |
127 | +With vesafb-tng chances are that the console will be restored properly |
128 | +even if the X server messes up the video mode. |
129 | |
130 | |
131 | Refresh rates |
132 | ============= |
133 | |
134 | -There is no way to change the vesafb video mode and/or timings after |
135 | -booting linux. If you are not happy with the 60 Hz refresh rate, you |
136 | -have these options: |
137 | +With VBE 3.0 compatible BIOSes and vesafb-tng it is possible to change |
138 | +the refresh rate either at boot time (by specifying the @<rr> part of |
139 | +the mode name) or later, using the fbset utility. |
140 | + |
141 | +If you want to use the default BIOS refresh rate while switching modes |
142 | +on a running system, set pixclock to 0. |
143 | |
144 | - * configure and load the DOS-Tools for your the graphics board (if |
145 | - available) and boot linux with loadlin. |
146 | - * use a native driver (matroxfb/atyfb) instead if vesafb. If none |
147 | +With VBE 2.0 there is no way to change the mode timings after booting |
148 | +Linux. If you are not happy with the 60 Hz refresh rate, you have |
149 | +the following options: |
150 | + |
151 | + * Configure and load the DOS tools for your the graphics board (if |
152 | + available) and boot Linux with loadlin. |
153 | + * Use a native driver (matroxfb/atyfb) instead of vesafb. If none |
154 | is available, write a new one! |
155 | - * VBE 3.0 might work too. I have neither a gfx board with VBE 3.0 |
156 | - support nor the specs, so I have not checked this yet. |
157 | + * Use a BIOS editor to change the default refresh rate (such an |
158 | + editor does exist at least for ATI Radeon BIOSes). |
159 | + * If you're running a non-vm86 and VBE 3.0 compatible system, you can |
160 | + use a kernel patch (vesafb-rrc) to hard-code some mode timings in |
161 | + the kernel and use these while setting the video mode at boot time. |
162 | + |
163 | +Note that there are some boards (nVidia 59**, 57** and newer models) |
164 | +claiming that their Video BIOS is VBE 3.0 compliant, while ignoring the |
165 | +CRTC values provided by software such as vesafb-tng. You'll not be able |
166 | +to adjust the refresh rate if you're using one of these boards. |
167 | |
168 | |
169 | Configuration |
170 | ============= |
171 | |
172 | -The VESA BIOS provides protected mode interface for changing |
173 | -some parameters. vesafb can use it for palette changes and |
174 | -to pan the display. It is turned off by default because it |
175 | -seems not to work with some BIOS versions, but there are options |
176 | -to turn it on. |
177 | - |
178 | -You can pass options to vesafb using "video=vesafb:option" on |
179 | -the kernel command line. Multiple options should be separated |
180 | -by comma, like this: "video=vesafb:ypan,invers" |
181 | - |
182 | -Accepted options: |
183 | - |
184 | -invers no comment... |
185 | - |
186 | -ypan enable display panning using the VESA protected mode |
187 | - interface. The visible screen is just a window of the |
188 | - video memory, console scrolling is done by changing the |
189 | - start of the window. |
190 | - pro: * scrolling (fullscreen) is fast, because there is |
191 | - no need to copy around data. |
192 | - * You'll get scrollback (the Shift-PgUp thing), |
193 | - the video memory can be used as scrollback buffer |
194 | - kontra: * scrolling only parts of the screen causes some |
195 | - ugly flicker effects (boot logo flickers for |
196 | - example). |
197 | - |
198 | -ywrap Same as ypan, but assumes your gfx board can wrap-around |
199 | - the video memory (i.e. starts reading from top if it |
200 | - reaches the end of video memory). Faster than ypan. |
201 | - |
202 | -redraw scroll by redrawing the affected part of the screen, this |
203 | - is the safe (and slow) default. |
204 | - |
205 | - |
206 | -vgapal Use the standard vga registers for palette changes. |
207 | - This is the default. |
208 | -pmipal Use the protected mode interface for palette changes. |
209 | - |
210 | -mtrr:n setup memory type range registers for the vesafb framebuffer |
211 | - where n: |
212 | - 0 - disabled (equivalent to nomtrr) (default) |
213 | - 1 - uncachable |
214 | - 2 - write-back |
215 | - 3 - write-combining |
216 | - 4 - write-through |
217 | - |
218 | - If you see the following in dmesg, choose the type that matches the |
219 | - old one. In this example, use "mtrr:2". |
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 a 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 | + |
254 | +pmipal Use the protected mode interface for palette changes. |
255 | + This is the default is the protected mode interface is available. |
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 |
266 | + the old one. In this example, use "mtrr:2". |
267 | ... |
268 | mtrr: type mismatch for e0000000,8000000 old: write-back new: write-combining |
269 | ... |
270 | |
271 | -nomtrr disable mtrr |
272 | +nomtrr Do not use memory type range registers for vesafb. |
273 | |
274 | vremap:n |
275 | remap 'n' MiB of video RAM. If 0 or not specified, remap memory |
276 | - according to video mode. (2.5.66 patch/idea by Antonino Daplas |
277 | - reversed to give override possibility (allocate more fb memory |
278 | - than the kernel would) to 2.4 by tmb@iki.fi) |
279 | + according to video mode. (2.5.66 patch/idea by Antonino Daplas |
280 | + reversed to give override possibility (allocate more fb memory |
281 | + than the kernel would) to 2.4 by tmb@iki.fi) |
282 | |
283 | vtotal:n |
284 | if the video BIOS of your card incorrectly determines the total |
285 | amount of video RAM, use this option to override the BIOS (in MiB). |
286 | |
287 | -Have fun! |
288 | +Options accepted only by vesafb-tng: |
289 | + |
290 | +<mode> The mode you want to set, in the standard modedb format. Refer to |
291 | + modedb.txt for a detailed description. If you specify a mode that is |
292 | + not supported by your board's BIOS, vesafb-tng will attempt to set a |
293 | + similar mode. The list of supported modes can be found in |
294 | + /proc/fbx/modes, where x is the framebuffer number (usually 0). |
295 | + When vesafb-tng is compiled as a module, the mode string should be |
296 | + provided as a value of the parameter 'mode'. |
297 | + |
298 | +vbemode:x |
299 | + Force the use of VBE mode x. The mode will only be set if it's |
300 | + found in the VBE-provided list of supported modes. |
301 | + NOTE: The mode number 'x' should be specified in VESA mode number |
302 | + notation, not the Linux kernel one (eg. 257 instead of 769). |
303 | + HINT: If you use this option because normal <mode> parameter does |
304 | + not work for you and you use a X server, you'll probably want to |
305 | + set the 'nocrtc' option to ensure that the video mode is properly |
306 | + restored after console <-> X switches. |
307 | + |
308 | +nocrtc Do not use CRTC timings while setting the video mode. This option |
309 | + makes sence only with VBE 3.0 compliant systems. Use it if you have |
310 | + problems with modes set in the standard way. Note that using this |
311 | + option means that any refresh rate adjustments will be ignored |
312 | + and the refresh rate will stay at your BIOS default (60 Hz). |
313 | + |
314 | +noedid Do not try to fetch and use EDID-provided modes. |
315 | + |
316 | +noblank Disable hardware blanking. |
317 | + |
318 | +gtf Force the use of VESA's GTF (Generalized Timing Formula). Specifying |
319 | + this will cause vesafb to skip its internal modedb and EDID-modedb |
320 | + and jump straight to the GTF part of the code (normally used only if |
321 | + everything else failed). This can be useful if you want to get as |
322 | + much as possible from your graphics board but your BIOS doesn't |
323 | + support modes with the refresh rates you require. Note that you may |
324 | + need to specify the maxhf, maxvf and maxclk parameters if they are not |
325 | + provided by the EDID block. |
326 | + |
327 | +Additionally, the following parameters may be provided. They all override the |
328 | +EDID-provided values and BIOS defaults. Refer to your monitor's specs to get |
329 | +the correct values for maxhf, maxvf and maxclk for your hardware. |
330 | + |
331 | +maxhf:n Maximum horizontal frequency (in kHz). |
332 | +maxvf:n Maximum vertical frequency (in Hz). |
333 | +maxclk:n Maximum pixel clock (in MHz). |
334 | |
335 | - Gerd |
336 | +Have fun! |
337 | |
338 | -- |
339 | +Original document for the vesafb driver by |
340 | Gerd Knorr <kraxel@goldbach.in-berlin.de> |
341 | |
342 | -Minor (mostly typo) changes |
343 | -by Nico Schmoigl <schmoigl@rumms.uni-mannheim.de> |
344 | +Minor (mostly typo) changes by |
345 | +Nico Schmoigl <schmoigl@rumms.uni-mannheim.de> |
346 | + |
347 | +Extended documentation for vm86, VBE 3.0 and vesafb-tng by |
348 | +Michal Januszewski <spock@gentoo.org> |
349 | + |
350 | diff --git a/arch/i386/boot/video.S b/arch/i386/boot/video.S |
351 | index 2c5b5cc..2c2d4b5 100644 |
352 | --- a/arch/i386/boot/video.S |
353 | +++ b/arch/i386/boot/video.S |
354 | @@ -163,10 +163,12 @@ basret: ret |
355 | # parameters in the default 80x25 mode -- these are set directly, |
356 | # because some very obscure BIOSes supply insane values. |
357 | mode_params: |
358 | +#ifdef CONFIG_FB_VESA_STD |
359 | #ifdef CONFIG_VIDEO_SELECT |
360 | cmpb $0, graphic_mode |
361 | jnz mopar_gr |
362 | #endif |
363 | +#endif |
364 | movb $0x03, %ah # Read cursor position |
365 | xorb %bh, %bh |
366 | int $0x10 |
367 | @@ -199,6 +201,7 @@ mopar2: movb %al, %fs:(PARAM_VIDEO_LINES) |
368 | ret |
369 | |
370 | #ifdef CONFIG_VIDEO_SELECT |
371 | +#ifdef CONFIG_FB_VESA_STD |
372 | # Fetching of VESA frame buffer parameters |
373 | mopar_gr: |
374 | leaw modelist+1024, %di |
375 | @@ -281,6 +284,7 @@ dac_done: |
376 | movw %es, %fs:(PARAM_VESAPM_SEG) |
377 | movw %di, %fs:(PARAM_VESAPM_OFF) |
378 | no_pm: ret |
379 | +#endif |
380 | |
381 | # The video mode menu |
382 | mode_menu: |
383 | @@ -495,10 +499,12 @@ mode_set: |
384 | |
385 | cmpb $VIDEO_FIRST_V7>>8, %ah |
386 | jz setv7 |
387 | - |
388 | + |
389 | +#ifdef CONFIG_FB_VESA_STD |
390 | cmpb $VIDEO_FIRST_VESA>>8, %ah |
391 | jnc check_vesa |
392 | - |
393 | +#endif |
394 | + |
395 | orb %ah, %ah |
396 | jz setmenu |
397 | |
398 | @@ -570,6 +576,7 @@ setr1: lodsw |
399 | movw -4(%si), %ax # Fetch mode ID |
400 | jmp _m_s |
401 | |
402 | +#ifdef CONFIG_FB_VESA_STD |
403 | check_vesa: |
404 | leaw modelist+1024, %di |
405 | subb $VIDEO_FIRST_VESA>>8, %bh |
406 | @@ -603,6 +610,7 @@ check_vesa: |
407 | ret |
408 | |
409 | _setbad: jmp setbad # Ugly... |
410 | +#endif |
411 | |
412 | # Recalculate vertical display end registers -- this fixes various |
413 | # inconsistencies of extended modes on many adapters. Called when |
414 | diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c |
415 | index 1393523..8a05f95 100644 |
416 | --- a/drivers/char/sysrq.c |
417 | +++ b/drivers/char/sysrq.c |
418 | @@ -240,7 +240,7 @@ static void send_sig_all(int sig) |
419 | struct task_struct *p; |
420 | |
421 | for_each_process(p) { |
422 | - if (p->mm && !is_init(p)) |
423 | + if (p->mm && !is_init(p) && !(p->flags & PF_BORROWED_MM)) |
424 | /* Not swapper, init nor kernel thread */ |
425 | force_sig(sig, p); |
426 | } |
427 | diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig |
428 | index 4e83f01..ae122fd 100644 |
429 | --- a/drivers/video/Kconfig |
430 | +++ b/drivers/video/Kconfig |
431 | @@ -547,8 +547,22 @@ config FB_TGA |
432 | cards. Say Y if you have one of those. |
433 | |
434 | config FB_VESA |
435 | - bool "VESA VGA graphics support" |
436 | - depends on (FB = y) && X86 |
437 | + tristate "VESA VGA graphics support" |
438 | + depends on (FB = y) && (X86 || X86_64) |
439 | + help |
440 | + This is the frame buffer device driver for generic VESA 2.0 |
441 | + compliant graphic cards. The older VESA 1.2 cards are not supported. |
442 | + You will get a boot time penguin logo at no additional cost. Please |
443 | + read <file:Documentation/fb/vesafb.txt>. If unsure, say Y. |
444 | + |
445 | +choice |
446 | + prompt "VESA driver type" |
447 | + depends on FB_VESA |
448 | + default FB_VESA_STD if X86_64 |
449 | + default FB_VESA_TNG if X86 |
450 | + |
451 | +config FB_VESA_STD |
452 | + bool "vesafb" |
453 | select FB_CFB_FILLRECT |
454 | select FB_CFB_COPYAREA |
455 | select FB_CFB_IMAGEBLIT |
456 | @@ -557,7 +571,43 @@ config FB_VESA |
457 | This is the frame buffer device driver for generic VESA 2.0 |
458 | compliant graphic cards. The older VESA 1.2 cards are not supported. |
459 | You will get a boot time penguin logo at no additional cost. Please |
460 | - read <file:Documentation/fb/vesafb.txt>. If unsure, say Y. |
461 | + read <file:Documentation/fb/vesafb.txt>. Choose this driver if you |
462 | + are experiencing problems with vesafb-tng or if you own a 64-bit system. |
463 | + |
464 | + Note that this driver cannot be compiled as a module. |
465 | + |
466 | +config FB_VESA_TNG |
467 | + bool "vesafb-tng" |
468 | + depends on !X86_64 |
469 | + select FB_MODE_HELPERS |
470 | + select FB_CFB_FILLRECT |
471 | + select FB_CFB_COPYAREA |
472 | + select FB_CFB_IMAGEBLIT |
473 | + help |
474 | + This is an enhanced generic frame buffer device driver for |
475 | + VBE 2.0 compliant graphic cards. It can take advantage of VBE 3.0 |
476 | + features (refresh rate adjustment) when these are available. |
477 | + The driver also makes it possible to change the video mode |
478 | + on the fly and to switch back to text mode when it's unloaded. |
479 | + |
480 | + If the driver is compiled as a module, the module will be called |
481 | + vesafb-tng. |
482 | + |
483 | +endchoice |
484 | + |
485 | +config FB_VESA_DEFAULT_MODE |
486 | + string "VESA default mode" |
487 | + depends on FB_VESA_TNG |
488 | + default "640x480@60" |
489 | + help |
490 | + This option is used to determine the default mode vesafb is |
491 | + supposed to switch to in case no mode is provided as a kernel |
492 | + command line parameter. |
493 | + |
494 | +config VIDEO_SELECT |
495 | + bool |
496 | + depends on FB_VESA |
497 | + default y |
498 | |
499 | config FB_IMAC |
500 | bool "Intel-based Macintosh Framebuffer Support" |
501 | diff --git a/drivers/video/Makefile b/drivers/video/Makefile |
502 | index 309a26d..e57b0e7 100644 |
503 | --- a/drivers/video/Makefile |
504 | +++ b/drivers/video/Makefile |
505 | @@ -102,7 +102,11 @@ obj-$(CONFIG_FB_PNX4008_DUM_RGB) += pnx4008/ |
506 | obj-$(CONFIG_FB_IBM_GXT4500) += gxt4500.o |
507 | |
508 | # Platform or fallback drivers go here |
509 | -obj-$(CONFIG_FB_VESA) += vesafb.o |
510 | +ifeq ($(CONFIG_FB_VESA_STD),y) |
511 | + obj-y += vesafb.o |
512 | +else |
513 | + obj-$(CONFIG_FB_VESA) += vesafb-thread.o vesafb-tng.o |
514 | +endif |
515 | obj-$(CONFIG_FB_IMAC) += imacfb.o |
516 | obj-$(CONFIG_FB_VGA16) += vga16fb.o vgastate.o |
517 | obj-$(CONFIG_FB_OF) += offb.o |
518 | diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c |
519 | index 3cfea31..bfb39cc 100644 |
520 | --- a/drivers/video/fbmem.c |
521 | +++ b/drivers/video/fbmem.c |
522 | @@ -1408,6 +1408,7 @@ fbmem_init(void) |
523 | printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class)); |
524 | fb_class = NULL; |
525 | } |
526 | + |
527 | return 0; |
528 | } |
529 | |
530 | diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c |
531 | index 5df41f6..f838a53 100644 |
532 | --- a/drivers/video/modedb.c |
533 | +++ b/drivers/video/modedb.c |
534 | @@ -674,6 +674,7 @@ void fb_var_to_videomode(struct fb_videomode *mode, |
535 | { |
536 | u32 pixclock, hfreq, htotal, vtotal; |
537 | |
538 | + mode->refresh = 0; |
539 | mode->name = NULL; |
540 | mode->xres = var->xres; |
541 | mode->yres = var->yres; |
542 | @@ -1025,3 +1026,4 @@ EXPORT_SYMBOL(fb_find_best_mode); |
543 | EXPORT_SYMBOL(fb_find_nearest_mode); |
544 | EXPORT_SYMBOL(fb_videomode_to_modelist); |
545 | EXPORT_SYMBOL(fb_find_mode); |
546 | +EXPORT_SYMBOL(fb_destroy_modelist); |
547 | diff --git a/drivers/video/vesafb-thread.c b/drivers/video/vesafb-thread.c |
548 | new file mode 100644 |
549 | index 0000000..543e202 |
550 | --- /dev/null |
551 | +++ b/drivers/video/vesafb-thread.c |
552 | @@ -0,0 +1,751 @@ |
553 | +/* |
554 | + * Framebuffer driver for VBE 2.0+ compliant graphic boards. |
555 | + * Kernel thread and vm86 routines. |
556 | + * |
557 | + * (c) 2004-2006 Michal Januszewski <spock@gentoo.org> |
558 | + * |
559 | + */ |
560 | + |
561 | +#include <linux/workqueue.h> |
562 | +#include <linux/completion.h> |
563 | +#include <linux/module.h> |
564 | +#include <linux/kernel.h> |
565 | +#include <linux/errno.h> |
566 | +#include <linux/mm.h> |
567 | +#include <linux/delay.h> |
568 | +#include <linux/signal.h> |
569 | +#include <linux/freezer.h> |
570 | +#include <linux/suspend.h> |
571 | +#include <linux/unistd.h> |
572 | +#include <video/vesa.h> |
573 | +#include <video/edid.h> |
574 | +#include <asm/mman.h> |
575 | +#include <asm/page.h> |
576 | +#include <asm/vm86.h> |
577 | +#include <asm/thread_info.h> |
578 | +#include <asm/uaccess.h> |
579 | +#include <asm/mmu_context.h> |
580 | +#include "edid.h" |
581 | + |
582 | +static int errno; |
583 | + |
584 | +static DECLARE_COMPLETION(vesafb_th_completion); |
585 | +static DECLARE_MUTEX(vesafb_task_list_sem); |
586 | +static LIST_HEAD(vesafb_task_list); |
587 | +static DECLARE_WAIT_QUEUE_HEAD(vesafb_wait); |
588 | + |
589 | +static struct vm86_struct vm86; |
590 | +static int vesafb_pid = 0; |
591 | + |
592 | +#define DEFAULT_VM86_FLAGS (IF_MASK | IOPL_MASK) |
593 | +#define VM86_PUSHW(x) \ |
594 | +do { \ |
595 | + vm86.regs.esp -= 2; \ |
596 | + *(u16*)(STACK_ADDR + vm86.regs.esp) = x; \ |
597 | +} while(0); |
598 | + |
599 | +/* Stack, the return code and buffers will be put into |
600 | + * one contiguous memory chunk: |
601 | + * |
602 | + * [ STACK | RET_CODE | BUFFER ] |
603 | + * |
604 | + * Some video BIOSes (sis6326) try to store data somewhere |
605 | + * in 0x7000-0x7fff, so we zeromap more memory to be safe. |
606 | + */ |
607 | +#define IVTBDA_SIZE PAGE_SIZE |
608 | +#define RET_CODE_SIZE 0x0010 |
609 | +#define STACK_SIZE 0x0500 |
610 | +#define BUFFER_SIZE 0x10000 |
611 | + |
612 | +/* The amount of memory that will be allocated should be a multiple |
613 | + * of PAGE_SIZE. */ |
614 | +#define __MEM_SIZE (RET_CODE_SIZE + STACK_SIZE + BUFFER_SIZE) |
615 | +#define REAL_MEM_SIZE (((__MEM_SIZE / PAGE_SIZE) + 1) * PAGE_SIZE) |
616 | + |
617 | +#define IVTBDA_ADDR 0x00000 |
618 | +#define STACK_ADDR (IVTBDA_ADDR + IVTBDA_SIZE) |
619 | +#define RET_CODE_ADDR (STACK_ADDR + STACK_SIZE) |
620 | +#define BUF_ADDR (RET_CODE_ADDR + RET_CODE_SIZE) |
621 | + |
622 | +#define FLAG_D (1 << 10) |
623 | + |
624 | +/* Syscalls used by the vesafb thread */ |
625 | +static int vm86old(struct vm86_struct __user* v86) |
626 | +{ |
627 | + long res; |
628 | + __asm__ volatile ("push %%ebx; movl %2, %%ebx ; int $0x80 ; pop %%ebx" |
629 | + : "=a" (res) |
630 | + : "0" (__NR_vm86old), "ri" ((long)(v86)) : "memory"); |
631 | + |
632 | + if ((unsigned long)(res) >= (unsigned long)(-MAX_ERRNO)) { |
633 | + errno = -res; |
634 | + res = -1; |
635 | + } |
636 | + return (int)res; |
637 | +} |
638 | + |
639 | +static int ioperm(unsigned long a, unsigned long b, unsigned long c) |
640 | +{ |
641 | + long res; |
642 | + __asm__ volatile ("push %%ebx; movl %2, %%ebx ; int $0x80 ; pop %%ebx" |
643 | + : "=a" (res) |
644 | + : "0" (__NR_ioperm), "ri" ((long)(a)), "c" ((long)(b)), |
645 | + "d" ((long)(c)) : "memory"); |
646 | + |
647 | + if ((unsigned long)(res) >= (unsigned long)(-MAX_ERRNO)) { |
648 | + errno = -res; |
649 | + res = -1; |
650 | + } |
651 | + return (int)res; |
652 | +} |
653 | + |
654 | +/* Segment prefix opcodes */ |
655 | +enum { |
656 | + P_CS = 0x2e, |
657 | + P_SS = 0x36, |
658 | + P_DS = 0x3e, |
659 | + P_ES = 0x26, |
660 | + P_FS = 0x64, |
661 | + P_GS = 0x65 |
662 | +}; |
663 | + |
664 | +/* Emulated vm86 ins instruction */ |
665 | +static void vm86_ins(int size) |
666 | +{ |
667 | + u32 edx, edi; |
668 | + edx = vm86.regs.edx & 0xffff; |
669 | + edi = (vm86.regs.edi & 0xffff) + (u32)(vm86.regs.es << 4); |
670 | + |
671 | + if (vm86.regs.eflags & FLAG_D) |
672 | + asm volatile ("std\n"); |
673 | + else |
674 | + asm volatile ("cld\n"); |
675 | + |
676 | + switch (size) { |
677 | + case 4: |
678 | + asm volatile ("insl\n" : "=D" (edi) : "d" (edx), "0" (edi)); |
679 | + break; |
680 | + case 2: |
681 | + asm volatile ("insw\n" : "=D" (edi) : "d" (edx), "0" (edi)); |
682 | + break; |
683 | + case 1: |
684 | + asm volatile ("insb\n" : "=D" (edi) : "d" (edx), "0" (edi)); |
685 | + break; |
686 | + } |
687 | + |
688 | + if (vm86.regs.eflags & FLAG_D) |
689 | + asm volatile ("cld\n"); |
690 | + |
691 | + edi -= (u32)(vm86.regs.es << 4); |
692 | + |
693 | + vm86.regs.edi &= 0xffff0000; |
694 | + vm86.regs.edi |= edi & 0xffff; |
695 | +} |
696 | + |
697 | +static void vm86_rep_ins(int size) |
698 | +{ |
699 | + u16 cx = vm86.regs.ecx; |
700 | + while (cx--) |
701 | + vm86_ins(size); |
702 | + |
703 | + vm86.regs.ecx &= 0xffff0000; |
704 | +} |
705 | + |
706 | +/* Emulated vm86 outs instruction */ |
707 | +static void vm86_outs(int size, int segment) |
708 | +{ |
709 | + u32 edx, esi, base; |
710 | + |
711 | + edx = vm86.regs.edx & 0xffff; |
712 | + esi = vm86.regs.esi & 0xffff; |
713 | + |
714 | + switch (segment) { |
715 | + case P_CS: base = vm86.regs.cs; break; |
716 | + case P_SS: base = vm86.regs.ss; break; |
717 | + case P_ES: base = vm86.regs.es; break; |
718 | + case P_FS: base = vm86.regs.fs; break; |
719 | + case P_GS: base = vm86.regs.gs; break; |
720 | + default: base = vm86.regs.ds; break; |
721 | + } |
722 | + |
723 | + esi += base << 4; |
724 | + |
725 | + if (vm86.regs.eflags & FLAG_D) |
726 | + asm volatile ("std\n"); |
727 | + else |
728 | + asm volatile ("cld\n"); |
729 | + |
730 | + switch (size) { |
731 | + case 4: |
732 | + asm volatile ("outsl\n" : "=S" (esi) : "d" (edx), "0" (esi)); |
733 | + break; |
734 | + case 2: |
735 | + asm volatile ("outsw\n" : "=S" (esi) : "d" (edx), "0" (esi)); |
736 | + break; |
737 | + case 1: |
738 | + asm volatile ("outsb\n" : "=S" (esi) : "d" (edx), "0" (esi)); |
739 | + break; |
740 | + } |
741 | + |
742 | + if (vm86.regs.eflags & FLAG_D) |
743 | + asm volatile ("cld"); |
744 | + |
745 | + esi -= base << 4; |
746 | + vm86.regs.esi &= 0xffff0000; |
747 | + vm86.regs.esi |= (esi & 0xffff); |
748 | +} |
749 | + |
750 | +static void vm86_rep_outs(int size, int segment) |
751 | +{ |
752 | + u16 cx = vm86.regs.ecx; |
753 | + while (cx--) |
754 | + vm86_outs(size, segment); |
755 | + |
756 | + vm86.regs.ecx &= 0xffff0000; |
757 | +} |
758 | + |
759 | +static int vm86_do_unknown(void) |
760 | +{ |
761 | + u8 data32 = 0, segment = P_DS, rep = 0; |
762 | + u8 *instr; |
763 | + int ret = 0, i = 0; |
764 | + |
765 | + instr = (u8*)((vm86.regs.cs << 4) + vm86.regs.eip); |
766 | + |
767 | + while (1) { |
768 | + switch(instr[i]) { |
769 | + case 0x66: /* operand size prefix */ |
770 | + data32 = 1 - data32; |
771 | + i++; |
772 | + break; |
773 | + case 0xf2: /* repnz */ |
774 | + case 0xf3: /* rep */ |
775 | + rep = 1; |
776 | + i++; |
777 | + break; |
778 | + case P_CS: /* segment prefix */ |
779 | + case P_SS: |
780 | + case P_DS: |
781 | + case P_ES: |
782 | + case P_FS: |
783 | + case P_GS: |
784 | + segment = instr[i]; |
785 | + i++; |
786 | + break; |
787 | + case 0xf0: /* LOCK - ignored */ |
788 | + case 0x67: /* address size prefix - ignored */ |
789 | + i++; |
790 | + break; |
791 | + case 0x6c: /* insb */ |
792 | + if (rep) |
793 | + vm86_rep_ins(1); |
794 | + else |
795 | + vm86_ins(1); |
796 | + i++; |
797 | + goto out; |
798 | + case 0x6d: /* insw / insd */ |
799 | + if (rep) { |
800 | + if (data32) |
801 | + vm86_rep_ins(4); |
802 | + else |
803 | + vm86_rep_ins(2); |
804 | + } else { |
805 | + if (data32) |
806 | + vm86_ins(4); |
807 | + else |
808 | + vm86_ins(2); |
809 | + } |
810 | + i++; |
811 | + goto out; |
812 | + case 0x6e: /* outsb */ |
813 | + if (rep) |
814 | + vm86_rep_outs(1, segment); |
815 | + else |
816 | + vm86_outs(1, segment); |
817 | + i++; |
818 | + goto out; |
819 | + case 0x6f: /* outsw / outsd */ |
820 | + if (rep) { |
821 | + if (data32) |
822 | + vm86_rep_outs(4, segment); |
823 | + else |
824 | + vm86_rep_outs(2, segment); |
825 | + } else { |
826 | + if (data32) |
827 | + vm86_outs(4, segment); |
828 | + else |
829 | + vm86_outs(2, segment); |
830 | + } |
831 | + i++; |
832 | + goto out; |
833 | + case 0xe4: /* inb xx */ |
834 | + asm volatile ( |
835 | + "inb %w1, %b0" |
836 | + : "=a" (vm86.regs.eax) |
837 | + : "d" (instr[i+1]), "0" (vm86.regs.eax)); |
838 | + i += 2; |
839 | + goto out; |
840 | + case 0xe5: /* inw xx / ind xx */ |
841 | + if (data32) { |
842 | + asm volatile ( |
843 | + "inl %w1, %0" |
844 | + : "=a" (vm86.regs.eax) |
845 | + : "d" (instr[i+1]), |
846 | + "0" (vm86.regs.eax)); |
847 | + } else { |
848 | + asm volatile ( |
849 | + "inw %w1, %w0" |
850 | + : "=a" (vm86.regs.eax) |
851 | + : "d" (instr[i+1]), |
852 | + "0" (vm86.regs.eax)); |
853 | + } |
854 | + i += 2; |
855 | + goto out; |
856 | + |
857 | + case 0xec: /* inb dx */ |
858 | + asm volatile ( |
859 | + "inb %w1, %b0" |
860 | + : "=a" (vm86.regs.eax) |
861 | + : "d" (vm86.regs.edx), "0" (vm86.regs.eax)); |
862 | + i++; |
863 | + goto out; |
864 | + case 0xed: /* inw dx / ind dx */ |
865 | + if (data32) { |
866 | + asm volatile ( |
867 | + "inl %w1, %0" |
868 | + : "=a" (vm86.regs.eax) |
869 | + : "d" (vm86.regs.edx)); |
870 | + } else { |
871 | + asm volatile ( |
872 | + "inw %w1, %w0" |
873 | + : "=a" (vm86.regs.eax) |
874 | + : "d" (vm86.regs.edx)); |
875 | + } |
876 | + i++; |
877 | + goto out; |
878 | + case 0xe6: /* outb xx */ |
879 | + asm volatile ( |
880 | + "outb %b0, %w1" |
881 | + : /* no return value */ |
882 | + : "a" (vm86.regs.eax), "d" (instr[i+1])); |
883 | + i += 2; |
884 | + goto out; |
885 | + case 0xe7: /* outw xx / outd xx */ |
886 | + if (data32) { |
887 | + asm volatile ( |
888 | + "outl %0, %w1" |
889 | + : /* no return value */ |
890 | + : "a" (vm86.regs.eax), |
891 | + "d" (instr[i+1])); |
892 | + } else { |
893 | + asm volatile ( |
894 | + "outw %w0, %w1" |
895 | + : /* no return value */ |
896 | + : "a" (vm86.regs.eax), |
897 | + "d" (instr[i+1])); |
898 | + } |
899 | + i += 2; |
900 | + goto out; |
901 | + case 0xee: /* outb dx */ |
902 | + asm volatile ( |
903 | + "outb %b0, %w1" |
904 | + : /* no return value */ |
905 | + : "a" (vm86.regs.eax), "d" (vm86.regs.edx)); |
906 | + i++; |
907 | + goto out; |
908 | + case 0xef: /* outw dx / outd dx */ |
909 | + if (data32) { |
910 | + asm volatile ( |
911 | + "outl %0, %w1" |
912 | + : /* no return value */ |
913 | + : "a" (vm86.regs.eax), |
914 | + "d" (vm86.regs.edx)); |
915 | + } else { |
916 | + asm volatile ( |
917 | + "outw %w0, %w1" |
918 | + : /* no return value */ |
919 | + : "a" (vm86.regs.eax), |
920 | + "d" (vm86.regs.edx)); |
921 | + } |
922 | + i++; |
923 | + goto out; |
924 | + default: |
925 | + printk(KERN_ERR "vesafb: BUG, opcode 0x%x emulation " |
926 | + "not supported (EIP: 0x%lx)\n", |
927 | + instr[i], (u32)(vm86.regs.cs << 4) + |
928 | + vm86.regs.eip); |
929 | + ret = 1; |
930 | + goto out; |
931 | + } |
932 | + } |
933 | +out: vm86.regs.eip += i; |
934 | + return ret; |
935 | +} |
936 | + |
937 | +void vesafb_do_vm86(struct vm86_regs *regs) |
938 | +{ |
939 | + unsigned int ret; |
940 | + u8 *retcode = (void*)RET_CODE_ADDR; |
941 | + |
942 | + memset(&vm86,0,sizeof(vm86)); |
943 | + memcpy(&vm86.regs, regs, sizeof(struct vm86_regs)); |
944 | + |
945 | + /* The return code */ |
946 | + retcode[0] = 0xcd; /* int opcode */ |
947 | + retcode[1] = 0xff; /* int number (255) */ |
948 | + |
949 | + /* We use int 0xff to get back to protected mode */ |
950 | + memset(&vm86.int_revectored, 0, sizeof(vm86.int_revectored)); |
951 | + ((unsigned char *)&vm86.int_revectored)[0xff / 8] |= (1 << (0xff % 8)); |
952 | + |
953 | + /* |
954 | + * We want to call int 0x10, so we set: |
955 | + * CS = 0x42 = 0x10 * 4 + 2 |
956 | + * IP = 0x40 = 0x10 * 4 |
957 | + * and SS:ESP. It's up to the caller to set the rest of the registers. |
958 | + */ |
959 | + vm86.regs.eflags = DEFAULT_VM86_FLAGS; |
960 | + vm86.regs.cs = *(unsigned short *)0x42; |
961 | + vm86.regs.eip = *(unsigned short *)0x40; |
962 | + vm86.regs.ss = (STACK_ADDR >> 4); |
963 | + vm86.regs.esp = ((STACK_ADDR & 0x0000f) + STACK_SIZE); |
964 | + |
965 | + /* These will be fetched off the stack when we come to an iret in the |
966 | + * int's 0x10 code. */ |
967 | + VM86_PUSHW(DEFAULT_VM86_FLAGS); |
968 | + VM86_PUSHW((RET_CODE_ADDR >> 4)); /* return code segment */ |
969 | + VM86_PUSHW((RET_CODE_ADDR & 0x0000f)); /* return code offset */ |
970 | + |
971 | + while(1) { |
972 | + ret = vm86old(&vm86); |
973 | + |
974 | + if (VM86_TYPE(ret) == VM86_INTx) { |
975 | + int vint = VM86_ARG(ret); |
976 | + |
977 | + /* If exit from vm86 was caused by int 0xff, then |
978 | + * we're done.. */ |
979 | + if (vint == 0xff) |
980 | + goto out; |
981 | + |
982 | + /* .. otherwise, we have to call the int handler |
983 | + * manually */ |
984 | + VM86_PUSHW(vm86.regs.eflags); |
985 | + VM86_PUSHW(vm86.regs.cs); |
986 | + VM86_PUSHW(vm86.regs.eip); |
987 | + |
988 | + vm86.regs.cs = *(u16 *)((vint << 2) + 2); |
989 | + vm86.regs.eip = *(u16 *)(vint << 2); |
990 | + vm86.regs.eflags &= ~(VIF_MASK | TF_MASK); |
991 | + } else if (VM86_TYPE(ret) == VM86_UNKNOWN) { |
992 | + if (vm86_do_unknown()) |
993 | + goto out; |
994 | + } else { |
995 | + printk(KERN_ERR "vesafb: BUG, returned from " |
996 | + "vm86 with %x (EIP: 0x%lx)\n", |
997 | + ret, (u32)(vm86.regs.cs << 4) + |
998 | + vm86.regs.eip); |
999 | + goto out; |
1000 | + } |
1001 | + } |
1002 | + |
1003 | +out: /* copy the registers' state back to the caller's struct */ |
1004 | + memcpy(regs, &vm86.regs, sizeof(struct vm86_regs)); |
1005 | +} |
1006 | + |
1007 | +static int vesafb_remap_pfn_range(unsigned long start, unsigned long end, |
1008 | + unsigned long pgoff, unsigned long prot, |
1009 | + int type) |
1010 | +{ |
1011 | + struct vm_area_struct *vma; |
1012 | + struct mm_struct *mm = current->mm; |
1013 | + int ret = 0; |
1014 | + |
1015 | + vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); |
1016 | + if (!vma) |
1017 | + return -ENOMEM; |
1018 | + memset(vma, 0, sizeof(*vma)); |
1019 | + down_write(&mm->mmap_sem); |
1020 | + vma->vm_mm = mm; |
1021 | + vma->vm_start = start; |
1022 | + vma->vm_end = end; |
1023 | + vma->vm_flags = VM_READ | VM_WRITE | VM_EXEC; |
1024 | + vma->vm_flags |= mm->def_flags; |
1025 | + vma->vm_page_prot.pgprot = prot; |
1026 | + vma->vm_pgoff = pgoff; |
1027 | + |
1028 | + if ((ret = insert_vm_struct(mm, vma))) { |
1029 | + up_write(&mm->mmap_sem); |
1030 | + kmem_cache_free(vm_area_cachep, vma); |
1031 | + return ret; |
1032 | + } |
1033 | + |
1034 | + if (type) { |
1035 | + ret = zeromap_page_range(vma, |
1036 | + vma->vm_start, |
1037 | + vma->vm_end - vma->vm_start, |
1038 | + vma->vm_page_prot); |
1039 | + } else { |
1040 | + vma->vm_flags |= VM_SHARED; |
1041 | + ret = remap_pfn_range(vma, |
1042 | + vma->vm_start, |
1043 | + vma->vm_pgoff, |
1044 | + vma->vm_end - vma->vm_start, |
1045 | + vma->vm_page_prot); |
1046 | + } |
1047 | + up_write(&mm->mmap_sem); |
1048 | + return ret; |
1049 | +} |
1050 | + |
1051 | +static inline int vesafb_init_mem(void) |
1052 | +{ |
1053 | + int ret = 0; |
1054 | + |
1055 | + /* The memory chunks we're remapping here should be multiples |
1056 | + * of PAGE_SIZE. */ |
1057 | + ret += vesafb_remap_pfn_range(0x00000, IVTBDA_SIZE, 0, |
1058 | + PROT_READ | PROT_EXEC | PROT_WRITE, 0); |
1059 | + ret += vesafb_remap_pfn_range(IVTBDA_SIZE, REAL_MEM_SIZE, 0, |
1060 | + PROT_READ | PROT_EXEC | PROT_WRITE, 1); |
1061 | + ret += vesafb_remap_pfn_range(0x9f000, 0x100000, |
1062 | + 0x9f000 >> PAGE_SHIFT, |
1063 | + PROT_READ | PROT_EXEC | PROT_WRITE, 0); |
1064 | + if (ret) |
1065 | + printk(KERN_ERR "vesafb thread: memory remapping failed\n"); |
1066 | + |
1067 | + return ret; |
1068 | +} |
1069 | + |
1070 | +#define vesafb_get_string(str) \ |
1071 | +{ \ |
1072 | + /* The address is in the form ssssoooo, where oooo = offset, \ |
1073 | + * ssss = segment */ \ |
1074 | + addr = ((p_vbe(tsk->buf)->str & 0xffff0000) >> 12) + \ |
1075 | + (p_vbe(tsk->buf)->str & 0x0000ffff); \ |
1076 | + \ |
1077 | + /* The data is in ROM which is shared between processes, so we \ |
1078 | + * just translate the real mode address into one visible from \ |
1079 | + * kernel space */ \ |
1080 | + if (addr >= 0xa0000) { \ |
1081 | + p_vbe(tsk->buf)->str = (u32) __va(addr); \ |
1082 | + \ |
1083 | + /* The data is in the buffer, we just have to convert the \ |
1084 | + * address so that it points into the buffer user provided. */ \ |
1085 | + } else if (addr > BUF_ADDR && addr < BUF_ADDR + \ |
1086 | + sizeof(struct vesafb_vbe_ib)) { \ |
1087 | + addr -= BUF_ADDR; \ |
1088 | + p_vbe(tsk->buf)->str = (u32) (tsk->buf + addr); \ |
1089 | + \ |
1090 | + /* This should never happen: someone was insane enough to put \ |
1091 | + * the data somewhere in RAM.. */ \ |
1092 | + } else { \ |
1093 | + p_vbe(tsk->buf)->str = (u32) ""; \ |
1094 | + } \ |
1095 | +} |
1096 | + |
1097 | +void vesafb_handle_getvbeib(struct vesafb_task *tsk) |
1098 | +{ |
1099 | + int addr, res; |
1100 | + |
1101 | + tsk->regs.es = (BUF_ADDR >> 4); |
1102 | + tsk->regs.edi = (BUF_ADDR & 0x000f); |
1103 | + strncpy(p_vbe(BUF_ADDR)->vbe_signature, "VBE2", 4); |
1104 | + |
1105 | + vesafb_do_vm86(&tsk->regs); |
1106 | + memcpy(tsk->buf, (void*)(BUF_ADDR), sizeof(struct vesafb_vbe_ib)); |
1107 | + |
1108 | + /* The OEM fields were not defined prior to VBE 2.0 */ |
1109 | + if (p_vbe(tsk->buf)->vbe_version >= 0x200) { |
1110 | + vesafb_get_string(oem_string_ptr); |
1111 | + vesafb_get_string(oem_vendor_name_ptr); |
1112 | + vesafb_get_string(oem_product_name_ptr); |
1113 | + vesafb_get_string(oem_product_rev_ptr); |
1114 | + } |
1115 | + |
1116 | + /* This is basically the same as vesafb_get_string() */ |
1117 | + addr = ((p_vbe(tsk->buf)->mode_list_ptr & 0xffff0000) >> 12) + |
1118 | + (p_vbe(tsk->buf)->mode_list_ptr & 0x0000ffff); |
1119 | + |
1120 | + if (addr >= 0xa0000) { |
1121 | + p_vbe(tsk->buf)->mode_list_ptr = (u32) __va(addr); |
1122 | + } else if (addr > BUF_ADDR && addr < BUF_ADDR + |
1123 | + sizeof(struct vesafb_vbe_ib)) { |
1124 | + addr -= BUF_ADDR; |
1125 | + p_vbe(tsk->buf)->mode_list_ptr = (u32) (tsk->buf + addr); |
1126 | + } else { |
1127 | + res = 0; |
1128 | + printk(KERN_WARNING "vesafb: warning, copying modelist " |
1129 | + "from somewhere in RAM!\n"); |
1130 | + while (*(u16*)(addr+res) != 0xffff && |
1131 | + res < (sizeof(p_vbe(tsk->buf)->reserved) - 2)) { |
1132 | + *(u16*) ((u32)&(p_vbe(tsk->buf)->reserved) + res) = |
1133 | + *(u16*)(addr+res); |
1134 | + res += 2; |
1135 | + } |
1136 | + *(u16*) ((u32)&(p_vbe(tsk->buf)->reserved) + res) = 0xffff; |
1137 | + } |
1138 | +} |
1139 | + |
1140 | +int vesafb_handle_tasks(void) |
1141 | +{ |
1142 | + struct vesafb_task *tsk; |
1143 | + struct list_head *curr, *next; |
1144 | + int ret = 0; |
1145 | + |
1146 | + down(&vesafb_task_list_sem); |
1147 | + list_for_each_safe(curr, next, &vesafb_task_list) { |
1148 | + tsk = list_entry(curr, struct vesafb_task, node); |
1149 | + |
1150 | + if (tsk->flags & TF_EXIT) { |
1151 | + ret = 1; |
1152 | + goto task_done; |
1153 | + } |
1154 | + if (tsk->flags & TF_GETVBEIB) { |
1155 | + vesafb_handle_getvbeib(tsk); |
1156 | + goto task_done; |
1157 | + } |
1158 | + /* Do we need to store a pointer to the buffer in ES:EDI? */ |
1159 | + if (tsk->flags & TF_BUF_DI) { |
1160 | + tsk->regs.es = (BUF_ADDR >> 4); |
1161 | + tsk->regs.edi = (BUF_ADDR & 0x000f); |
1162 | + } |
1163 | + /* Sometimes the pointer has to be in ES:EBX. */ |
1164 | + if (tsk->flags & TF_BUF_BX) { |
1165 | + tsk->regs.es = (BUF_ADDR >> 4); |
1166 | + tsk->regs.ebx = (BUF_ADDR & 0x000f); |
1167 | + } |
1168 | + if (tsk->flags & (TF_BUF_DI | TF_BUF_BX)) |
1169 | + memcpy((void*)BUF_ADDR, tsk->buf, tsk->buf_len); |
1170 | + |
1171 | + vesafb_do_vm86(&tsk->regs); |
1172 | + |
1173 | + if (tsk->flags & TF_RETURN_BUF) |
1174 | + memcpy(tsk->buf, (void*)BUF_ADDR, tsk->buf_len); |
1175 | + |
1176 | +task_done: list_del(curr); |
1177 | + complete(&tsk->done); |
1178 | + } |
1179 | + |
1180 | + /* If we're going to kill this thread, don't allow any elements |
1181 | + * to be added to the task list. */ |
1182 | + if (!ret) |
1183 | + up(&vesafb_task_list_sem); |
1184 | + |
1185 | + return ret; |
1186 | +} |
1187 | + |
1188 | +/* |
1189 | + * This 'hybrid' thread serves as a backend for vesafb-tng, handling all vm86 |
1190 | + * calls. It is started as a kernel thread. It then creates its own mm struct, |
1191 | + * thus separating itself from any userspace processes. At this moment, it |
1192 | + * stops being a kernel thread (kernel threads have mm = NULL) and becomes |
1193 | + * a 'hybrid' thread -- one that has full access to kernel space, yet runs |
1194 | + * with its own address space. |
1195 | + * |
1196 | + * This is necessary because in order to make vm86 calls some parts of the |
1197 | + * first 1MB of RAM have to be setup to mimic the real mode. These are: |
1198 | + * - interrupt vector table [0x00000-0x003ff] |
1199 | + * - BIOS data area [0x00400-0x004ff] |
1200 | + * - Extended BIOS data area [0x9fc00-0x9ffff] |
1201 | + * - the video RAM [0xa0000-0xbffff] |
1202 | + * - video BIOS [0xc0000-0xcffff] |
1203 | + * - motherboard BIOS [0xf0000-0xfffff] |
1204 | + */ |
1205 | +int vesafb_thread(void *unused) |
1206 | +{ |
1207 | + int err = 0; |
1208 | + |
1209 | + set_fs(KERNEL_DS); |
1210 | + daemonize("vesafb"); |
1211 | + |
1212 | + if (set_new_mm()) { |
1213 | + err = -ENOMEM; |
1214 | + goto thr_end; |
1215 | + } |
1216 | + if (vesafb_init_mem()) { |
1217 | + err = -ENOMEM; |
1218 | + goto thr_end; |
1219 | + } |
1220 | + |
1221 | + DPRINTK("started vesafb thread\n"); |
1222 | + |
1223 | + /* Having an IO bitmap makes things faster as we avoid GPFs |
1224 | + * when running vm86 code. We can live if it fails, though, |
1225 | + * so don't bother checking for errors. */ |
1226 | + ioperm(0,1024,1); |
1227 | + set_user_nice(current, -10); |
1228 | + |
1229 | + complete(&vesafb_th_completion); |
1230 | + |
1231 | + while (1) { |
1232 | + if (vesafb_handle_tasks()) |
1233 | + break; |
1234 | + wait_event_interruptible(vesafb_wait, |
1235 | + !list_empty(&vesafb_task_list)); |
1236 | + try_to_freeze(); |
1237 | + } |
1238 | + |
1239 | +out: DPRINTK("exiting the vesafb thread\n"); |
1240 | + vesafb_pid = -1; |
1241 | + |
1242 | + /* Now that all callers know this thread is no longer running |
1243 | + * (pid < 0), allow them to continue. */ |
1244 | + up(&vesafb_task_list_sem); |
1245 | + return err; |
1246 | +thr_end: |
1247 | + down(&vesafb_task_list_sem); |
1248 | + complete(&vesafb_th_completion); |
1249 | + goto out; |
1250 | +} |
1251 | + |
1252 | +int vesafb_queue_task(struct vesafb_task *tsk) |
1253 | +{ |
1254 | + down(&vesafb_task_list_sem); |
1255 | + if (vesafb_pid < 0) |
1256 | + return -1; |
1257 | + list_add_tail(&tsk->node, &vesafb_task_list); |
1258 | + up(&vesafb_task_list_sem); |
1259 | + wake_up(&vesafb_wait); |
1260 | + return 0; |
1261 | +} |
1262 | + |
1263 | +int vesafb_wait_for_thread(void) |
1264 | +{ |
1265 | + /* PID 0 means that the thread is still initializing. */ |
1266 | + if (vesafb_pid < 0) |
1267 | + return -1; |
1268 | + wait_for_completion(&vesafb_th_completion); |
1269 | + return 0; |
1270 | +} |
1271 | + |
1272 | +int __init vesafb_init_thread(void) |
1273 | +{ |
1274 | + vesafb_pid = kernel_thread(vesafb_thread,NULL,0); |
1275 | + return 0; |
1276 | +} |
1277 | + |
1278 | +#ifdef MODULE |
1279 | +void __exit vesafb_kill_thread(void) |
1280 | +{ |
1281 | + struct vesafb_task *tsk; |
1282 | + if (vesafb_pid <= 0) |
1283 | + return; |
1284 | + |
1285 | + vesafb_create_task(tsk); |
1286 | + if (!tsk) |
1287 | + return; |
1288 | + tsk->flags |= TF_EXIT; |
1289 | + vesafb_queue_task(tsk); |
1290 | + vesafb_wait_for_task(tsk); |
1291 | + kfree(tsk); |
1292 | + return; |
1293 | +} |
1294 | +module_exit(vesafb_kill_thread); |
1295 | +#endif |
1296 | +module_init(vesafb_init_thread); |
1297 | + |
1298 | +EXPORT_SYMBOL_GPL(vesafb_queue_task); |
1299 | +EXPORT_SYMBOL_GPL(vesafb_wait_for_thread); |
1300 | + |
1301 | +MODULE_LICENSE("GPL"); |
1302 | +MODULE_AUTHOR("Michal Januszewski"); |
1303 | + |
1304 | diff --git a/drivers/video/vesafb-tng.c b/drivers/video/vesafb-tng.c |
1305 | new file mode 100644 |
1306 | index 0000000..b4d4394 |
1307 | --- /dev/null |
1308 | +++ b/drivers/video/vesafb-tng.c |
1309 | @@ -0,0 +1,1586 @@ |
1310 | +/* |
1311 | + * Framebuffer driver for VBE 2.0+ compliant graphic boards |
1312 | + * |
1313 | + * (c) 2004-2006 Michal Januszewski <spock@gentoo.org> |
1314 | + * Based upon vesafb code by Gerd Knorr <kraxel@goldbach.in-berlin.de> |
1315 | + * |
1316 | + */ |
1317 | + |
1318 | +#include <linux/module.h> |
1319 | +#include <linux/kernel.h> |
1320 | +#include <linux/errno.h> |
1321 | +#include <linux/string.h> |
1322 | +#include <linux/mm.h> |
1323 | +#include <linux/tty.h> |
1324 | +#include <linux/delay.h> |
1325 | +#include <linux/fb.h> |
1326 | +#include <linux/ioport.h> |
1327 | +#include <linux/init.h> |
1328 | +#include <linux/proc_fs.h> |
1329 | +#include <linux/completion.h> |
1330 | +#include <linux/platform_device.h> |
1331 | +#include <video/edid.h> |
1332 | +#include <video/vesa.h> |
1333 | +#include <video/vga.h> |
1334 | +#include <asm/io.h> |
1335 | +#include <asm/mtrr.h> |
1336 | +#include <asm/page.h> |
1337 | +#include <asm/pgtable.h> |
1338 | +#include "edid.h" |
1339 | + |
1340 | +#define dac_reg (0x3c8) |
1341 | +#define dac_val (0x3c9) |
1342 | + |
1343 | +#define VESAFB_NEED_EXACT_RES 1 |
1344 | +#define VESAFB_NEED_EXACT_DEPTH 2 |
1345 | + |
1346 | +/* --------------------------------------------------------------------- */ |
1347 | + |
1348 | +static struct fb_var_screeninfo vesafb_defined __initdata = { |
1349 | + .activate = FB_ACTIVATE_NOW, |
1350 | + .height = 0, |
1351 | + .width = 0, |
1352 | + .right_margin = 32, |
1353 | + .upper_margin = 16, |
1354 | + .lower_margin = 4, |
1355 | + .vsync_len = 4, |
1356 | + .vmode = FB_VMODE_NONINTERLACED, |
1357 | +}; |
1358 | + |
1359 | +static struct fb_fix_screeninfo vesafb_fix __initdata = { |
1360 | + .id = "VESA VGA", |
1361 | + .type = FB_TYPE_PACKED_PIXELS, |
1362 | + .accel = FB_ACCEL_NONE, |
1363 | +}; |
1364 | + |
1365 | +static int mtrr = 0; /* disable mtrr by default */ |
1366 | +static int blank = 1; /* enable blanking by default */ |
1367 | +static int ypan = 0; /* 0 - nothing, 1 - ypan, 2 - ywrap */ |
1368 | +static int pmi_setpal = 1; /* pmi for palette changes */ |
1369 | +static u16 *pmi_base = NULL; /* protected mode interface location */ |
1370 | +static void (*pmi_start)(void) = NULL; |
1371 | +static void (*pmi_pal)(void) = NULL; |
1372 | +static struct vesafb_vbe_ib vbe_ib; |
1373 | +static struct vesafb_mode_ib *vbe_modes; |
1374 | +static int vbe_modes_cnt = 0; |
1375 | +static struct fb_info *vesafb_info = NULL; |
1376 | +static int nocrtc = 0; /* ignore CRTC settings */ |
1377 | +static int noedid __initdata = 0; /* don't try DDC transfers */ |
1378 | +static int vram_remap __initdata = 0; /* set amount of memory to be used */ |
1379 | +static int vram_total __initdata = 0; /* set total amount of memory */ |
1380 | +static u16 maxclk __initdata = 0; /* maximum pixel clock */ |
1381 | +static u16 maxvf __initdata = 0; /* maximum vertical frequency */ |
1382 | +static u16 maxhf __initdata = 0; /* maximum horizontal frequency */ |
1383 | +static int gtf __initdata = 0; /* forces use of the GTF */ |
1384 | +static char *mode_option __initdata = NULL; |
1385 | +static u16 vbemode __initdata = 0; |
1386 | + |
1387 | +/* --------------------------------------------------------------------- */ |
1388 | + |
1389 | +static int vesafb_find_vbe_mode(int xres, int yres, int depth, |
1390 | + unsigned char flags) |
1391 | +{ |
1392 | + int i, match = -1, h = 0, d = 0x7fffffff; |
1393 | + |
1394 | + for (i = 0; i < vbe_modes_cnt; i++) { |
1395 | + h = abs(vbe_modes[i].x_res - xres) + |
1396 | + abs(vbe_modes[i].y_res - yres) + |
1397 | + abs(depth - vbe_modes[i].depth); |
1398 | + if (h == 0) |
1399 | + return i; |
1400 | + if (h < d || (h == d && vbe_modes[i].depth > depth)) { |
1401 | + d = h; |
1402 | + match = i; |
1403 | + } |
1404 | + } |
1405 | + i = 1; |
1406 | + |
1407 | + if (flags & VESAFB_NEED_EXACT_DEPTH && vbe_modes[match].depth != depth) |
1408 | + i = 0; |
1409 | + if (flags & VESAFB_NEED_EXACT_RES && d > 24) |
1410 | + i = 0; |
1411 | + if (i != 0) |
1412 | + return match; |
1413 | + else |
1414 | + return -1; |
1415 | +} |
1416 | + |
1417 | +static int vesafb_pan_display(struct fb_var_screeninfo *var, |
1418 | + struct fb_info *info) |
1419 | +{ |
1420 | + int offset; |
1421 | + |
1422 | + offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4; |
1423 | + |
1424 | + /* It turns out it's not the best idea to do panning via vm86, |
1425 | + * so we only allow it if we have a PMI. */ |
1426 | + if (pmi_start) { |
1427 | + __asm__ __volatile__( |
1428 | + "call *(%%edi)" |
1429 | + : /* no return value */ |
1430 | + : "a" (0x4f07), /* EAX */ |
1431 | + "b" (0), /* EBX */ |
1432 | + "c" (offset), /* ECX */ |
1433 | + "d" (offset >> 16), /* EDX */ |
1434 | + "D" (&pmi_start)); /* EDI */ |
1435 | + } |
1436 | + return 0; |
1437 | +} |
1438 | + |
1439 | +static int vesafb_blank(int blank, struct fb_info *info) |
1440 | +{ |
1441 | + struct vesafb_task *tsk; |
1442 | + int err = 1; |
1443 | + |
1444 | + if (vbe_ib.capabilities & VBE_CAP_VGACOMPAT) { |
1445 | + int loop = 10000; |
1446 | + u8 seq = 0, crtc17 = 0; |
1447 | + |
1448 | + if (blank == FB_BLANK_POWERDOWN) { |
1449 | + seq = 0x20; |
1450 | + crtc17 = 0x00; |
1451 | + err = 0; |
1452 | + } else { |
1453 | + seq = 0x00; |
1454 | + crtc17 = 0x80; |
1455 | + err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL; |
1456 | + } |
1457 | + |
1458 | + vga_wseq(NULL, 0x00, 0x01); |
1459 | + seq |= vga_rseq(NULL, 0x01) & ~0x20; |
1460 | + vga_wseq(NULL, 0x00, seq); |
1461 | + |
1462 | + crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80; |
1463 | + while (loop--); |
1464 | + vga_wcrt(NULL, 0x17, crtc17); |
1465 | + vga_wseq(NULL, 0x00, 0x03); |
1466 | + } else { |
1467 | + vesafb_create_task (tsk); |
1468 | + if (!tsk) |
1469 | + return -ENOMEM; |
1470 | + tsk->regs.eax = 0x4f10; |
1471 | + switch (blank) { |
1472 | + case FB_BLANK_UNBLANK: |
1473 | + tsk->regs.ebx = 0x0001; |
1474 | + break; |
1475 | + case FB_BLANK_NORMAL: |
1476 | + tsk->regs.ebx = 0x0101; /* standby */ |
1477 | + break; |
1478 | + case FB_BLANK_POWERDOWN: |
1479 | + tsk->regs.ebx = 0x0401; /* powerdown */ |
1480 | + break; |
1481 | + default: |
1482 | + goto out; |
1483 | + } |
1484 | + tsk->flags = TF_CALL; |
1485 | + if (!vesafb_queue_task (tsk)) |
1486 | + vesafb_wait_for_task(tsk); |
1487 | + |
1488 | + if ((tsk->regs.eax & 0xffff) == 0x004f) |
1489 | + err = 0; |
1490 | +out: kfree(tsk); |
1491 | + } |
1492 | + return err; |
1493 | +} |
1494 | + |
1495 | +static int vesafb_setpalette(struct vesafb_pal_entry *entries, int count, |
1496 | + int start, struct fb_info *info) |
1497 | +{ |
1498 | + struct vesafb_task *tsk; |
1499 | + int i = ((struct vesafb_par*)info->par)->mode_idx; |
1500 | + int ret = 0; |
1501 | + |
1502 | + /* We support palette modifications for 8 bpp modes only, so |
1503 | + * there can never be more than 256 entries. */ |
1504 | + if (start + count > 256) |
1505 | + return -EINVAL; |
1506 | + |
1507 | + /* Use VGA registers if mode is VGA-compatible. */ |
1508 | + if (i >= 0 && i < vbe_modes_cnt && |
1509 | + vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) { |
1510 | + for (i = 0; i < count; i++) { |
1511 | + outb_p(start + i, dac_reg); |
1512 | + outb_p(entries[i].red, dac_val); |
1513 | + outb_p(entries[i].green, dac_val); |
1514 | + outb_p(entries[i].blue, dac_val); |
1515 | + } |
1516 | + } else if (pmi_setpal) { |
1517 | + __asm__ __volatile__( |
1518 | + "call *(%%esi)" |
1519 | + : /* no return value */ |
1520 | + : "a" (0x4f09), /* EAX */ |
1521 | + "b" (0), /* EBX */ |
1522 | + "c" (count), /* ECX */ |
1523 | + "d" (start), /* EDX */ |
1524 | + "D" (entries), /* EDI */ |
1525 | + "S" (&pmi_pal)); /* ESI */ |
1526 | + } else { |
1527 | + vesafb_create_task (tsk); |
1528 | + if (!tsk) |
1529 | + return -ENOMEM; |
1530 | + tsk->regs.eax = 0x4f09; |
1531 | + tsk->regs.ebx = 0x0; |
1532 | + tsk->regs.ecx = count; |
1533 | + tsk->regs.edx = start; |
1534 | + tsk->buf = entries; |
1535 | + tsk->buf_len = sizeof(struct vesafb_pal_entry) * count; |
1536 | + tsk->flags = TF_CALL | TF_BUF_DI; |
1537 | + |
1538 | + if (!vesafb_queue_task (tsk)) |
1539 | + vesafb_wait_for_task(tsk); |
1540 | + if ((tsk->regs.eax & 0xffff) != 0x004f) |
1541 | + ret = 1; |
1542 | + kfree(tsk); |
1543 | + } |
1544 | + return ret; |
1545 | +} |
1546 | + |
1547 | +static int vesafb_setcolreg(unsigned regno, unsigned red, unsigned green, |
1548 | + unsigned blue, unsigned transp, |
1549 | + struct fb_info *info) |
1550 | +{ |
1551 | + struct vesafb_pal_entry entry; |
1552 | + int shift = 16 - info->var.green.length; |
1553 | + int ret = 0; |
1554 | + |
1555 | + if (regno >= info->cmap.len) |
1556 | + return -EINVAL; |
1557 | + |
1558 | + if (info->var.bits_per_pixel == 8) { |
1559 | + entry.red = red >> shift; |
1560 | + entry.green = green >> shift; |
1561 | + entry.blue = blue >> shift; |
1562 | + entry.pad = 0; |
1563 | + |
1564 | + ret = vesafb_setpalette(&entry, 1, regno, info); |
1565 | + } else if (regno < 16) { |
1566 | + switch (info->var.bits_per_pixel) { |
1567 | + case 16: |
1568 | + if (info->var.red.offset == 10) { |
1569 | + /* 1:5:5:5 */ |
1570 | + ((u32*) (info->pseudo_palette))[regno] = |
1571 | + ((red & 0xf800) >> 1) | |
1572 | + ((green & 0xf800) >> 6) | |
1573 | + ((blue & 0xf800) >> 11); |
1574 | + } else { |
1575 | + /* 0:5:6:5 */ |
1576 | + ((u32*) (info->pseudo_palette))[regno] = |
1577 | + ((red & 0xf800) ) | |
1578 | + ((green & 0xfc00) >> 5) | |
1579 | + ((blue & 0xf800) >> 11); |
1580 | + } |
1581 | + break; |
1582 | + |
1583 | + case 24: |
1584 | + case 32: |
1585 | + red >>= 8; |
1586 | + green >>= 8; |
1587 | + blue >>= 8; |
1588 | + ((u32 *)(info->pseudo_palette))[regno] = |
1589 | + (red << info->var.red.offset) | |
1590 | + (green << info->var.green.offset) | |
1591 | + (blue << info->var.blue.offset); |
1592 | + break; |
1593 | + } |
1594 | + } |
1595 | + return ret; |
1596 | +} |
1597 | + |
1598 | +static int vesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
1599 | +{ |
1600 | + struct vesafb_pal_entry *entries; |
1601 | + int shift = 16 - info->var.green.length; |
1602 | + int i, ret = 0; |
1603 | + |
1604 | + if (info->var.bits_per_pixel == 8) { |
1605 | + if (cmap->start + cmap->len > info->cmap.start + |
1606 | + info->cmap.len || cmap->start < info->cmap.start) |
1607 | + return -EINVAL; |
1608 | + |
1609 | + entries = vmalloc(sizeof(struct vesafb_pal_entry) * cmap->len); |
1610 | + if (!entries) |
1611 | + return -ENOMEM; |
1612 | + for (i = 0; i < cmap->len; i++) { |
1613 | + entries[i].red = cmap->red[i] >> shift; |
1614 | + entries[i].green = cmap->green[i] >> shift; |
1615 | + entries[i].blue = cmap->blue[i] >> shift; |
1616 | + entries[i].pad = 0; |
1617 | + } |
1618 | + ret = vesafb_setpalette(entries, cmap->len, cmap->start, info); |
1619 | + vfree(entries); |
1620 | + } else { |
1621 | + /* For modes with bpp > 8, we only set the pseudo palette in |
1622 | + * the fb_info struct. We rely on vesafb_setcolreg to do all |
1623 | + * sanity checking. */ |
1624 | + for (i = 0; i < cmap->len; i++) { |
1625 | + ret += vesafb_setcolreg(cmap->start + i, cmap->red[i], |
1626 | + cmap->green[i], cmap->blue[i], |
1627 | + 0, info); |
1628 | + } |
1629 | + } |
1630 | + return ret; |
1631 | +} |
1632 | + |
1633 | +static int vesafb_set_par(struct fb_info *info) |
1634 | +{ |
1635 | + struct vesafb_par *par = (struct vesafb_par *) info->par; |
1636 | + struct vesafb_task *tsk; |
1637 | + struct vesafb_crtc_ib *crtc = NULL; |
1638 | + struct vesafb_mode_ib *mode = NULL; |
1639 | + int i, err = 0, depth = info->var.bits_per_pixel; |
1640 | + |
1641 | + if (depth > 8 && depth != 32) |
1642 | + depth = info->var.red.length + info->var.green.length + |
1643 | + info->var.blue.length; |
1644 | + |
1645 | + i = vesafb_find_vbe_mode(info->var.xres, info->var.yres, depth, |
1646 | + VESAFB_NEED_EXACT_RES | |
1647 | + VESAFB_NEED_EXACT_DEPTH); |
1648 | + if (i >= 0) |
1649 | + mode = &vbe_modes[i]; |
1650 | + else |
1651 | + return -EINVAL; |
1652 | + |
1653 | + vesafb_create_task (tsk); |
1654 | + if (!tsk) |
1655 | + return -ENOMEM; |
1656 | + tsk->regs.eax = 0x4f02; |
1657 | + tsk->regs.ebx = mode->mode_id | 0x4000; /* use LFB */ |
1658 | + tsk->flags = TF_CALL; |
1659 | + |
1660 | + if (vbe_ib.vbe_version >= 0x0300 && !nocrtc && |
1661 | + info->var.pixclock != 0) { |
1662 | + tsk->regs.ebx |= 0x0800; /* use CRTC data */ |
1663 | + tsk->flags |= TF_BUF_DI; |
1664 | + crtc = kmalloc(sizeof(struct vesafb_crtc_ib), GFP_KERNEL); |
1665 | + if (!crtc) { |
1666 | + err = -ENOMEM; |
1667 | + goto out; |
1668 | + } |
1669 | + crtc->horiz_start = info->var.xres + info->var.right_margin; |
1670 | + crtc->horiz_end = crtc->horiz_start + info->var.hsync_len; |
1671 | + crtc->horiz_total = crtc->horiz_end + info->var.left_margin; |
1672 | + |
1673 | + crtc->vert_start = info->var.yres + info->var.lower_margin; |
1674 | + crtc->vert_end = crtc->vert_start + info->var.vsync_len; |
1675 | + crtc->vert_total = crtc->vert_end + info->var.upper_margin; |
1676 | + |
1677 | + crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000; |
1678 | + crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock / |
1679 | + (crtc->vert_total * crtc->horiz_total))); |
1680 | + crtc->flags = 0; |
1681 | + |
1682 | + if (info->var.vmode & FB_VMODE_DOUBLE) |
1683 | + crtc->flags |= 0x1; |
1684 | + if (info->var.vmode & FB_VMODE_INTERLACED) |
1685 | + crtc->flags |= 0x2; |
1686 | + if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT)) |
1687 | + crtc->flags |= 0x4; |
1688 | + if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT)) |
1689 | + crtc->flags |= 0x8; |
1690 | + memcpy(&par->crtc, crtc, sizeof(struct vesafb_crtc_ib)); |
1691 | + } else |
1692 | + memset(&par->crtc, 0, sizeof(struct vesafb_crtc_ib)); |
1693 | + |
1694 | + tsk->buf = (void*)crtc; |
1695 | + tsk->buf_len = sizeof(struct vesafb_crtc_ib); |
1696 | + |
1697 | + if (vesafb_queue_task (tsk)) { |
1698 | + err = -EINVAL; |
1699 | + goto out; |
1700 | + } |
1701 | + vesafb_wait_for_task(tsk); |
1702 | + |
1703 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { |
1704 | + printk(KERN_ERR "vesafb: mode switch failed (eax: 0x%lx)\n", |
1705 | + tsk->regs.eax); |
1706 | + err = -EINVAL; |
1707 | + goto out; |
1708 | + } |
1709 | + par->mode_idx = i; |
1710 | + |
1711 | + /* For 8bpp modes, always try to set the DAC to 8 bits. */ |
1712 | + if (vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC && |
1713 | + mode->bits_per_pixel <= 8) { |
1714 | + vesafb_reset_task(tsk); |
1715 | + tsk->flags = TF_CALL; |
1716 | + tsk->regs.eax = 0x4f08; |
1717 | + tsk->regs.ebx = 0x0800; |
1718 | + |
1719 | + if (!vesafb_queue_task (tsk)) |
1720 | + vesafb_wait_for_task(tsk); |
1721 | + |
1722 | + if ((tsk->regs.eax & 0xffff) != 0x004f || |
1723 | + ((tsk->regs.ebx & 0xff00) >> 8) != 8) { |
1724 | + /* We've failed to set the DAC palette format - |
1725 | + * time to correct var. */ |
1726 | + info->var.red.length = 6; |
1727 | + info->var.green.length = 6; |
1728 | + info->var.blue.length = 6; |
1729 | + } |
1730 | + } |
1731 | + |
1732 | + info->fix.visual = (info->var.bits_per_pixel == 8) ? |
1733 | + FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; |
1734 | + info->fix.line_length = mode->bytes_per_scan_line; |
1735 | + |
1736 | + DPRINTK("set new mode %dx%d-%d (0x%x)\n", |
1737 | + info->var.xres, info->var.yres, info->var.bits_per_pixel, |
1738 | + mode->mode_id); |
1739 | + |
1740 | +out: if (crtc != NULL) |
1741 | + kfree(crtc); |
1742 | + kfree(tsk); |
1743 | + |
1744 | + return err; |
1745 | +} |
1746 | + |
1747 | +static void vesafb_setup_var(struct fb_var_screeninfo *var, struct fb_info *info, |
1748 | + struct vesafb_mode_ib *mode) |
1749 | +{ |
1750 | + var->xres = mode->x_res; |
1751 | + var->yres = mode->y_res; |
1752 | + var->xres_virtual = mode->x_res; |
1753 | + var->yres_virtual = (ypan) ? |
1754 | + info->fix.smem_len / mode->bytes_per_scan_line : |
1755 | + mode->y_res; |
1756 | + var->xoffset = 0; |
1757 | + var->yoffset = 0; |
1758 | + var->bits_per_pixel = mode->bits_per_pixel; |
1759 | + |
1760 | + if (var->bits_per_pixel == 15) |
1761 | + var->bits_per_pixel = 16; |
1762 | + |
1763 | + if (var->bits_per_pixel > 8) { |
1764 | + var->red.offset = mode->red_off; |
1765 | + var->red.length = mode->red_len; |
1766 | + var->green.offset = mode->green_off; |
1767 | + var->green.length = mode->green_len; |
1768 | + var->blue.offset = mode->blue_off; |
1769 | + var->blue.length = mode->blue_len; |
1770 | + var->transp.offset = mode->rsvd_off; |
1771 | + var->transp.length = mode->rsvd_len; |
1772 | + |
1773 | + DPRINTK("directcolor: size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n", |
1774 | + mode->rsvd_len, |
1775 | + mode->red_len, |
1776 | + mode->green_len, |
1777 | + mode->blue_len, |
1778 | + mode->rsvd_off, |
1779 | + mode->red_off, |
1780 | + mode->green_off, |
1781 | + mode->blue_off); |
1782 | + } else { |
1783 | + var->red.offset = 0; |
1784 | + var->green.offset = 0; |
1785 | + var->blue.offset = 0; |
1786 | + var->transp.offset = 0; |
1787 | + |
1788 | + /* We're assuming that we can switch the DAC to 8 bits. If |
1789 | + * this proves to be incorrect, we'll update the fields |
1790 | + * later in set_par(). */ |
1791 | + if (vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC) { |
1792 | + var->red.length = 8; |
1793 | + var->green.length = 8; |
1794 | + var->blue.length = 8; |
1795 | + var->transp.length = 0; |
1796 | + } else { |
1797 | + var->red.length = 6; |
1798 | + var->green.length = 6; |
1799 | + var->blue.length = 6; |
1800 | + var->transp.length = 0; |
1801 | + } |
1802 | + } |
1803 | +} |
1804 | + |
1805 | +static void inline vesafb_check_limits(struct fb_var_screeninfo *var, |
1806 | + struct fb_info *info) |
1807 | +{ |
1808 | + struct fb_videomode *mode; |
1809 | + |
1810 | + if (!var->pixclock) |
1811 | + return; |
1812 | + if (vbe_ib.vbe_version < 0x0300) { |
1813 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info); |
1814 | + return; |
1815 | + } |
1816 | + if (!fb_validate_mode(var, info)) |
1817 | + return; |
1818 | + mode = fb_find_best_mode(var, &info->modelist); |
1819 | + if (mode) { |
1820 | + DPRINTK("find_best_mode: %d %d @ %d (vmode: %d)\n", |
1821 | + mode->xres, mode->yres, mode->refresh, mode->vmode); |
1822 | + if (mode->xres == var->xres && mode->yres == var->yres && |
1823 | + !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) { |
1824 | + fb_videomode_to_var(var, mode); |
1825 | + return; |
1826 | + } |
1827 | + } |
1828 | + if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) |
1829 | + return; |
1830 | + /* Use default refresh rate */ |
1831 | + var->pixclock = 0; |
1832 | +} |
1833 | + |
1834 | +static int vesafb_check_var(struct fb_var_screeninfo *var, |
1835 | + struct fb_info *info) |
1836 | +{ |
1837 | + int match = -1; |
1838 | + int depth = var->red.length + var->green.length + var->blue.length; |
1839 | + |
1840 | + /* Various apps will use bits_per_pixel to set the color depth, |
1841 | + * which is theoretically incorrect, but which we'll try to handle |
1842 | + * here. */ |
1843 | + if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8) |
1844 | + depth = var->bits_per_pixel; |
1845 | + match = vesafb_find_vbe_mode(var->xres, var->yres, depth, |
1846 | + VESAFB_NEED_EXACT_RES); |
1847 | + |
1848 | + if (match == -1) { |
1849 | + DPRINTK("vesafb: mode %dx%d-%d not found\n", var->xres, |
1850 | + var->yres, depth); |
1851 | + return -EINVAL; |
1852 | + } |
1853 | + |
1854 | + vesafb_setup_var(var, info, &vbe_modes[match]); |
1855 | + DPRINTK("found mode 0x%x (%dx%d-%dbpp)\n", |
1856 | + vbe_modes[match].mode_id, vbe_modes[match].x_res, |
1857 | + vbe_modes[match].y_res, vbe_modes[match].depth); |
1858 | + |
1859 | + /* Check whether we have remapped enough memory for this mode. */ |
1860 | + if (var->yres * vbe_modes[match].bytes_per_scan_line > |
1861 | + info->fix.smem_len) { |
1862 | + return -EINVAL; |
1863 | + } |
1864 | + |
1865 | + if ((var->vmode & FB_VMODE_DOUBLE) && |
1866 | + !(vbe_modes[match].mode_attr & 0x100)) |
1867 | + var->vmode &= ~FB_VMODE_DOUBLE; |
1868 | + if ((var->vmode & FB_VMODE_INTERLACED) && |
1869 | + !(vbe_modes[match].mode_attr & 0x200)) |
1870 | + var->vmode &= ~FB_VMODE_INTERLACED; |
1871 | + vesafb_check_limits(var, info); |
1872 | + return 0; |
1873 | +} |
1874 | + |
1875 | +static int vesafb_open(struct fb_info *info, int user) |
1876 | +{ |
1877 | + struct vesafb_task *tsk = NULL; |
1878 | + struct vesafb_par *par = info->par; |
1879 | + int cnt = atomic_read(&par->ref_count); |
1880 | + |
1881 | + if (!cnt) { |
1882 | + vesafb_create_task(tsk); |
1883 | + if (!tsk) |
1884 | + goto out; |
1885 | + |
1886 | + /* Get the VBE state buffer size. We want all available |
1887 | + * hardware state data (CL = 0x0f). */ |
1888 | + tsk->regs.eax = 0x4f04; |
1889 | + tsk->regs.ecx = 0x000f; |
1890 | + tsk->regs.edx = 0x0000; |
1891 | + tsk->flags = TF_CALL; |
1892 | + |
1893 | + if (vesafb_queue_task(tsk)) |
1894 | + goto out; |
1895 | + |
1896 | + vesafb_wait_for_task(tsk); |
1897 | + |
1898 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { |
1899 | + printk(KERN_WARNING "vesafb: VBE state buffer size " |
1900 | + "cannot be determined (eax: 0x%lx)\n", |
1901 | + tsk->regs.eax); |
1902 | + goto out; |
1903 | + } |
1904 | + |
1905 | + par->vbe_state_size = 64 * (tsk->regs.ebx & 0xffff); |
1906 | + par->vbe_state = kzalloc(par->vbe_state_size, GFP_KERNEL); |
1907 | + if (!par->vbe_state) |
1908 | + goto out; |
1909 | + |
1910 | + vesafb_reset_task(tsk); |
1911 | + tsk->regs.eax = 0x4f04; |
1912 | + tsk->regs.ecx = 0x000f; |
1913 | + tsk->regs.edx = 0x0001; |
1914 | + tsk->flags = TF_CALL | TF_BUF_BX | TF_RETURN_BUF; |
1915 | + tsk->buf = (void*)(par->vbe_state); |
1916 | + tsk->buf_len = par->vbe_state_size; |
1917 | + |
1918 | + if (vesafb_queue_task(tsk)) |
1919 | + goto getstate_failed; |
1920 | + vesafb_wait_for_task(tsk); |
1921 | + |
1922 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { |
1923 | + printk(KERN_WARNING "vesafb: VBE get state call " |
1924 | + "failed (eax: 0x%lx)\n", tsk->regs.eax); |
1925 | + goto getstate_failed; |
1926 | + } |
1927 | + } |
1928 | +out: |
1929 | + atomic_inc(&par->ref_count); |
1930 | + if (tsk) |
1931 | + kfree(tsk); |
1932 | + return 0; |
1933 | + |
1934 | +getstate_failed: |
1935 | + kfree(par->vbe_state); |
1936 | + par->vbe_state = NULL; |
1937 | + par->vbe_state_size = 0; |
1938 | + goto out; |
1939 | +} |
1940 | + |
1941 | +static int vesafb_release(struct fb_info *info, int user) |
1942 | +{ |
1943 | + struct vesafb_task *tsk = NULL; |
1944 | + struct vesafb_par *par = info->par; |
1945 | + int cnt = atomic_read(&par->ref_count); |
1946 | + |
1947 | + if (!cnt) |
1948 | + return -EINVAL; |
1949 | + |
1950 | + if (cnt == 1 && par->vbe_state && par->vbe_state_size) { |
1951 | + vesafb_create_task(tsk); |
1952 | + if (!tsk) |
1953 | + goto out; |
1954 | + |
1955 | + tsk->regs.eax = 0x0003; |
1956 | + tsk->regs.ebx = 0x0000; |
1957 | + tsk->flags = TF_CALL; |
1958 | + |
1959 | + if (vesafb_queue_task(tsk)) |
1960 | + goto out; |
1961 | + |
1962 | + vesafb_wait_for_task(tsk); |
1963 | + |
1964 | + vesafb_reset_task(tsk); |
1965 | + tsk->regs.eax = 0x4f04; |
1966 | + tsk->regs.ecx = 0x000f; |
1967 | + tsk->regs.edx = 0x0002; |
1968 | + tsk->buf = (void*)(par->vbe_state); |
1969 | + tsk->buf_len = par->vbe_state_size; |
1970 | + tsk->flags = TF_CALL | TF_BUF_BX; |
1971 | + |
1972 | + if (vesafb_queue_task(tsk)) |
1973 | + goto out; |
1974 | + |
1975 | + vesafb_wait_for_task(tsk); |
1976 | + |
1977 | + if ((tsk->regs.eax & 0xffff) != 0x004f) |
1978 | + printk(KERN_WARNING "vesafb: VBE state restore call " |
1979 | + "failed (eax: 0x%lx)\n", |
1980 | + tsk->regs.eax); |
1981 | + } |
1982 | +out: |
1983 | + atomic_dec(&par->ref_count); |
1984 | + if (tsk) |
1985 | + kfree(tsk); |
1986 | + return 0; |
1987 | +} |
1988 | + |
1989 | +static int __init vesafb_probe(struct platform_device *device); |
1990 | + |
1991 | +static struct fb_ops vesafb_ops = { |
1992 | + .owner = THIS_MODULE, |
1993 | + .fb_open = vesafb_open, |
1994 | + .fb_release = vesafb_release, |
1995 | + .fb_setcolreg = vesafb_setcolreg, |
1996 | + .fb_setcmap = vesafb_setcmap, |
1997 | + .fb_pan_display = vesafb_pan_display, |
1998 | + .fb_blank = vesafb_blank, |
1999 | + .fb_fillrect = cfb_fillrect, |
2000 | + .fb_copyarea = cfb_copyarea, |
2001 | + .fb_imageblit = cfb_imageblit, |
2002 | + .fb_check_var = vesafb_check_var, |
2003 | + .fb_set_par = vesafb_set_par |
2004 | +}; |
2005 | + |
2006 | +static struct platform_driver vesafb_driver = { |
2007 | + .probe = vesafb_probe, |
2008 | + .driver = { |
2009 | + .name = "vesafb", |
2010 | + }, |
2011 | +}; |
2012 | + |
2013 | +static struct platform_device *vesafb_device; |
2014 | + |
2015 | +#ifndef MODULE |
2016 | +int __init vesafb_setup(char *options) |
2017 | +{ |
2018 | + char *this_opt; |
2019 | + |
2020 | + if (!options || !*options) |
2021 | + return 0; |
2022 | + |
2023 | + DPRINTK("options %s\n",options); |
2024 | + |
2025 | + while ((this_opt = strsep(&options, ",")) != NULL) { |
2026 | + if (!*this_opt) continue; |
2027 | + |
2028 | + DPRINTK("this_opt: %s\n",this_opt); |
2029 | + |
2030 | + if (! strcmp(this_opt, "redraw")) |
2031 | + ypan=0; |
2032 | + else if (! strcmp(this_opt, "ypan")) |
2033 | + ypan=1; |
2034 | + else if (! strcmp(this_opt, "ywrap")) |
2035 | + ypan=2; |
2036 | + else if (! strcmp(this_opt, "vgapal")) |
2037 | + pmi_setpal=0; |
2038 | + else if (! strcmp(this_opt, "pmipal")) |
2039 | + pmi_setpal=1; |
2040 | + else if (! strncmp(this_opt, "mtrr:", 5)) |
2041 | + mtrr = simple_strtoul(this_opt+5, NULL, 0); |
2042 | + else if (! strcmp(this_opt, "nomtrr")) |
2043 | + mtrr=0; |
2044 | + else if (! strcmp(this_opt, "nocrtc")) |
2045 | + nocrtc=1; |
2046 | + else if (! strcmp(this_opt, "noedid")) |
2047 | + noedid=1; |
2048 | + else if (! strcmp(this_opt, "noblank")) |
2049 | + blank=0; |
2050 | + else if (! strcmp(this_opt, "gtf")) |
2051 | + gtf=1; |
2052 | + else if (! strncmp(this_opt, "vtotal:", 7)) |
2053 | + vram_total = simple_strtoul(this_opt + 7, NULL, 0); |
2054 | + else if (! strncmp(this_opt, "vremap:", 7)) |
2055 | + vram_remap = simple_strtoul(this_opt + 7, NULL, 0); |
2056 | + else if (! strncmp(this_opt, "maxhf:", 6)) |
2057 | + maxhf = simple_strtoul(this_opt + 6, NULL, 0); |
2058 | + else if (! strncmp(this_opt, "maxvf:", 6)) |
2059 | + maxvf = simple_strtoul(this_opt + 6, NULL, 0); |
2060 | + else if (! strncmp(this_opt, "maxclk:", 7)) |
2061 | + maxclk = simple_strtoul(this_opt + 7, NULL, 0); |
2062 | + else if (! strncmp(this_opt, "vbemode:", 8)) |
2063 | + vbemode = simple_strtoul(this_opt + 8, NULL,0); |
2064 | + else if (this_opt[0] >= '0' && this_opt[0] <= '9') { |
2065 | + DPRINTK("mode_option: %s\n",this_opt); |
2066 | + mode_option = this_opt; |
2067 | + } else { |
2068 | + printk(KERN_WARNING |
2069 | + "vesafb: unrecognized option %s\n", this_opt); |
2070 | + } |
2071 | + } |
2072 | + |
2073 | + return 0; |
2074 | +} |
2075 | +#endif /* !MODULE */ |
2076 | + |
2077 | +static int vesafb_read_proc_modes(char *buf, char **start, off_t offset, |
2078 | + int len, int *eof, void *private) |
2079 | +{ |
2080 | + int clen = 0, i; |
2081 | + |
2082 | + for (i = 0; i < vbe_modes_cnt; i++) { |
2083 | + clen += min(snprintf(buf + clen, len - clen, "%dx%d-%d\n", vbe_modes[i].x_res, |
2084 | + vbe_modes[i].y_res, vbe_modes[i].depth), len - clen); |
2085 | + } |
2086 | + *eof = 1; |
2087 | + return clen; |
2088 | +} |
2089 | + |
2090 | +static int vesafb_read_proc_vbe_info(char *buf, char **start, off_t offset, |
2091 | + int len, int *eof, void *private) |
2092 | +{ |
2093 | + int clen = 0; |
2094 | + |
2095 | + clen += min(snprintf(buf + clen, len, "Version: %d.%d\n", |
2096 | + ((vbe_ib.vbe_version & 0xff00) >> 8), |
2097 | + vbe_ib.vbe_version & 0xff), len); |
2098 | + clen += min(snprintf(buf + clen, len - clen, "Vendor: %s\n", |
2099 | + (char*)vbe_ib.oem_vendor_name_ptr), len - clen); |
2100 | + clen += min(snprintf(buf + clen, len - clen, "Product: %s\n", |
2101 | + (char*)vbe_ib.oem_product_name_ptr), len - clen); |
2102 | + clen += min(snprintf(buf + clen, len - clen, "OEM rev: %s\n", |
2103 | + (char*)vbe_ib.oem_product_rev_ptr), len - clen); |
2104 | + clen += min(snprintf(buf + clen, len - clen, "OEM string: %s\n", |
2105 | + (char*)vbe_ib.oem_string_ptr), len - clen); |
2106 | + |
2107 | + *eof = 1; |
2108 | + return clen; |
2109 | +} |
2110 | + |
2111 | +static int __init inline vesafb_vbe_getinfo(struct vesafb_task *tsk) |
2112 | +{ |
2113 | + tsk->regs.eax = 0x4f00; |
2114 | + tsk->flags = TF_CALL | TF_GETVBEIB; |
2115 | + tsk->buf = &vbe_ib; |
2116 | + tsk->buf_len = sizeof(vbe_ib); |
2117 | + if (vesafb_queue_task (tsk)) |
2118 | + return -EINVAL; |
2119 | + vesafb_wait_for_task(tsk); |
2120 | + |
2121 | + if (vbe_ib.vbe_version < 0x0200) { |
2122 | + printk(KERN_ERR "vesafb: Sorry, pre-VBE 2.0 cards are " |
2123 | + "not supported.\n"); |
2124 | + return -EINVAL; |
2125 | + } |
2126 | + |
2127 | + if ((tsk->regs.eax & 0xffff) != 0x004f) { |
2128 | + printk(KERN_ERR "vesafb: Getting mode info block failed " |
2129 | + "(eax=0x%x)\n", (u32)tsk->regs.eax); |
2130 | + return -EINVAL; |
2131 | + } |
2132 | + |
2133 | + printk(KERN_INFO "vesafb: %s, %s, %s (OEM: %s)\n", |
2134 | + (char*)vbe_ib.oem_vendor_name_ptr, |
2135 | + (char*)vbe_ib.oem_product_name_ptr, |
2136 | + (char*)vbe_ib.oem_product_rev_ptr, |
2137 | + (char*)vbe_ib.oem_string_ptr); |
2138 | + |
2139 | + printk(KERN_INFO "vesafb: VBE version: %d.%d\n", |
2140 | + ((vbe_ib.vbe_version & 0xff00) >> 8), |
2141 | + vbe_ib.vbe_version & 0xff); |
2142 | + return 0; |
2143 | +} |
2144 | + |
2145 | +static int __init inline vesafb_vbe_getmodes(struct vesafb_task *tsk) |
2146 | +{ |
2147 | + u16 *mode = 0; |
2148 | + int off = 0; |
2149 | + |
2150 | + /* Count available modes. */ |
2151 | + mode = (u16*)vbe_ib.mode_list_ptr; |
2152 | + while (*mode != 0xffff) { |
2153 | + vbe_modes_cnt++; |
2154 | + mode++; |
2155 | + } |
2156 | + |
2157 | + vbe_modes = kmalloc(sizeof(struct vesafb_mode_ib)* |
2158 | + vbe_modes_cnt, GFP_KERNEL); |
2159 | + if (!vbe_modes) |
2160 | + return -ENOMEM; |
2161 | + |
2162 | + /* Get mode info for all available modes. */ |
2163 | + mode = (u16*)vbe_ib.mode_list_ptr; |
2164 | + |
2165 | + while (*mode != 0xffff) { |
2166 | + struct vesafb_mode_ib *mib; |
2167 | + |
2168 | + vesafb_reset_task(tsk); |
2169 | + tsk->regs.eax = 0x4f01; |
2170 | + tsk->regs.ecx = (u32) *mode; |
2171 | + tsk->flags = TF_CALL | TF_RETURN_BUF | TF_BUF_DI; |
2172 | + tsk->buf = vbe_modes+off; |
2173 | + tsk->buf_len = sizeof(struct vesafb_mode_ib); |
2174 | + if (vesafb_queue_task(tsk)) |
2175 | + return -EINVAL; |
2176 | + vesafb_wait_for_task(tsk); |
2177 | + mib = p_mode(tsk->buf); |
2178 | + mib->mode_id = *mode; |
2179 | + |
2180 | + /* We only want modes that are supported with the currennt |
2181 | + * hardware configuration (D0), color (D3), graphics (D4) |
2182 | + * and that have support for the LFB (D7). */ |
2183 | + if ((mib->mode_attr & 0x99) == 0x99 && |
2184 | + mib->bits_per_pixel >= 8) { |
2185 | + off++; |
2186 | + } else { |
2187 | + vbe_modes_cnt--; |
2188 | + } |
2189 | + mode++; |
2190 | + mib->depth = mib->red_len + mib->green_len + mib->blue_len; |
2191 | + /* Handle 8bpp modes and modes with broken color component |
2192 | + * lengths. */ |
2193 | + if (mib->depth == 0 || |
2194 | + (mib->depth == 24 && mib->bits_per_pixel == 32)) |
2195 | + mib->depth = mib->bits_per_pixel; |
2196 | + } |
2197 | + |
2198 | + return 0; |
2199 | +} |
2200 | + |
2201 | +static int __init inline vesafb_vbe_getpmi(struct vesafb_task *tsk) |
2202 | +{ |
2203 | + int i; |
2204 | + |
2205 | + vesafb_reset_task(tsk); |
2206 | + tsk->regs.eax = 0x4f0a; |
2207 | + tsk->regs.ebx = 0x0; |
2208 | + tsk->flags = TF_CALL; |
2209 | + if (vesafb_queue_task(tsk)) |
2210 | + return -EINVAL; |
2211 | + vesafb_wait_for_task(tsk); |
2212 | + |
2213 | + if ((tsk->regs.eax & 0xffff) != 0x004f || tsk->regs.es < 0xc000) { |
2214 | + pmi_setpal = ypan = 0; |
2215 | + } else { |
2216 | + pmi_base = (u16*)phys_to_virt(((u32)tsk->regs.es << 4) + |
2217 | + tsk->regs.edi); |
2218 | + pmi_start = (void*)((char*)pmi_base + pmi_base[1]); |
2219 | + pmi_pal = (void*)((char*)pmi_base + pmi_base[2]); |
2220 | + printk(KERN_INFO "vesafb: protected mode interface info at " |
2221 | + "%04x:%04x\n", |
2222 | + (u16)tsk->regs.es, (u16)tsk->regs.edi); |
2223 | + printk(KERN_INFO "vesafb: pmi: set display start = %p, " |
2224 | + "set palette = %p\n", pmi_start, pmi_pal); |
2225 | + |
2226 | + if (pmi_base[3]) { |
2227 | + printk(KERN_INFO "vesafb: pmi: ports = "); |
2228 | + for (i = pmi_base[3]/2; pmi_base[i] != 0xffff; i++) |
2229 | + printk("%x ",pmi_base[i]); |
2230 | + printk("\n"); |
2231 | + |
2232 | + /* |
2233 | + * memory areas not supported (yet?) |
2234 | + * |
2235 | + * Rules are: we have to set up a descriptor for the |
2236 | + * requested memory area and pass it in the ES register |
2237 | + * to the BIOS function. |
2238 | + */ |
2239 | + if (pmi_base[i] != 0xffff) { |
2240 | + printk(KERN_INFO "vesafb: can't handle memory " |
2241 | + "requests, pmi disabled\n"); |
2242 | + ypan = pmi_setpal = 0; |
2243 | + } |
2244 | + } |
2245 | + } |
2246 | + return 0; |
2247 | +} |
2248 | + |
2249 | +static int __init inline vesafb_vbe_getedid(struct vesafb_task *tsk, |
2250 | + struct fb_info *info) |
2251 | +{ |
2252 | + int res = 0; |
2253 | + |
2254 | + if (noedid || vbe_ib.vbe_version < 0x0300) |
2255 | + return -EINVAL; |
2256 | + |
2257 | + vesafb_reset_task(tsk); |
2258 | + tsk->regs.eax = 0x4f15; |
2259 | + tsk->regs.ebx = 0; |
2260 | + tsk->regs.ecx = 0; |
2261 | + if (vesafb_queue_task(tsk)) |
2262 | + return -EINVAL; |
2263 | + vesafb_wait_for_task(tsk); |
2264 | + |
2265 | + if ((tsk->regs.eax & 0xffff) != 0x004f) |
2266 | + return -EINVAL; |
2267 | + |
2268 | + if ((tsk->regs.ebx & 0x3) == 3) { |
2269 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports both " |
2270 | + "DDC1 and DDC2 transfers\n"); |
2271 | + } else if ((tsk->regs.ebx & 0x3) == 2) { |
2272 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports DDC2 " |
2273 | + "transfers\n"); |
2274 | + } else if ((tsk->regs.ebx & 0x3) == 1) { |
2275 | + printk(KERN_INFO "vesafb: VBIOS/hardware supports DDC1 " |
2276 | + "transfers\n"); |
2277 | + } else { |
2278 | + printk(KERN_INFO "vesafb: VBIOS/hardware doesn't support " |
2279 | + "DDC transfers\n"); |
2280 | + return -EINVAL; |
2281 | + } |
2282 | + |
2283 | + vesafb_reset_task(tsk); |
2284 | + tsk->regs.eax = 0x4f15; |
2285 | + tsk->regs.ebx = 1; |
2286 | + tsk->regs.ecx = tsk->regs.edx = 0; |
2287 | + tsk->flags = TF_CALL | TF_RETURN_BUF | TF_BUF_DI; |
2288 | + tsk->buf = kmalloc(EDID_LENGTH, GFP_KERNEL); |
2289 | + tsk->buf_len = EDID_LENGTH; |
2290 | + |
2291 | + if (vesafb_queue_task(tsk)) { |
2292 | + res = -EINVAL; |
2293 | + goto out; |
2294 | + } |
2295 | + vesafb_wait_for_task(tsk); |
2296 | + |
2297 | + if ((tsk->regs.eax & 0xffff) == 0x004f) { |
2298 | + fb_edid_to_monspecs(tsk->buf, &info->monspecs); |
2299 | + fb_videomode_to_modelist(info->monspecs.modedb, |
2300 | + info->monspecs.modedb_len, &info->modelist); |
2301 | + if (info->monspecs.vfmax && info->monspecs.hfmax) { |
2302 | + /* If the maximum pixel clock wasn't specified in |
2303 | + * the EDID block, set it to 300 MHz. */ |
2304 | + if (info->monspecs.dclkmax == 0) |
2305 | + info->monspecs.dclkmax = 300 * 1000000; |
2306 | + info->monspecs.gtf = 1; |
2307 | + } else { |
2308 | + res = -EINVAL; |
2309 | + } |
2310 | + } |
2311 | + |
2312 | +out: kfree(tsk->buf); |
2313 | + return res; |
2314 | +} |
2315 | + |
2316 | +static void __init inline vesafb_vbe_getmonspecs(struct vesafb_task *tsk, |
2317 | + struct fb_info *info) |
2318 | +{ |
2319 | + struct fb_var_screeninfo var; |
2320 | + int i; |
2321 | + memset(&info->monspecs, 0, sizeof(struct fb_monspecs)); |
2322 | + |
2323 | + /* If we didn't get all necessary data from the EDID block, |
2324 | + * mark it as incompatible with the GTF. */ |
2325 | + if (vesafb_vbe_getedid(tsk, info)) |
2326 | + info->monspecs.gtf = 0; |
2327 | + |
2328 | + /* Kernel command line overrides. */ |
2329 | + if (maxclk) |
2330 | + info->monspecs.dclkmax = maxclk * 1000000; |
2331 | + if (maxvf) |
2332 | + info->monspecs.vfmax = maxvf; |
2333 | + if (maxhf) |
2334 | + info->monspecs.hfmax = maxhf * 1000; |
2335 | + |
2336 | + /* In case DDC transfers are not supported the user can provide |
2337 | + * monitor limits manually. Lower limits are set to "safe" values. */ |
2338 | + if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) { |
2339 | + info->monspecs.dclkmin = 0; |
2340 | + info->monspecs.vfmin = 60; |
2341 | + info->monspecs.hfmin = 29000; |
2342 | + info->monspecs.gtf = 1; |
2343 | + } |
2344 | + |
2345 | + if (info->monspecs.gtf) { |
2346 | + printk(KERN_INFO |
2347 | + "vesafb: monitor limits: vf = %d Hz, hf = %d kHz, " |
2348 | + "clk = %d MHz\n", info->monspecs.vfmax, |
2349 | + (int)(info->monspecs.hfmax / 1000), |
2350 | + (int)(info->monspecs.dclkmax / 1000000)); |
2351 | + /* Add valid VESA video modes to our modelist. */ |
2352 | + for (i = 0; i < VESA_MODEDB_SIZE; i++) { |
2353 | + fb_videomode_to_var(&var, (struct fb_videomode *) |
2354 | + &vesa_modes[i]); |
2355 | + if (!fb_validate_mode(&var, info)) |
2356 | + fb_add_videomode((struct fb_videomode *) |
2357 | + &vesa_modes[i], |
2358 | + &info->modelist); |
2359 | + } |
2360 | + } else { |
2361 | + /* Add all VESA video modes to our modelist. */ |
2362 | + fb_videomode_to_modelist((struct fb_videomode *)vesa_modes, |
2363 | + VESA_MODEDB_SIZE, &info->modelist); |
2364 | + printk(KERN_INFO "vesafb: no monitor limits have been set\n"); |
2365 | + } |
2366 | + return; |
2367 | +} |
2368 | + |
2369 | +static int __init inline vesafb_vbe_init(struct fb_info *info) |
2370 | +{ |
2371 | + struct vesafb_task *tsk; |
2372 | + int res = 0; |
2373 | + |
2374 | + vesafb_create_task(tsk); |
2375 | + if (!tsk) |
2376 | + return -EINVAL; |
2377 | + if ((res = vesafb_vbe_getinfo(tsk)) != 0) |
2378 | + goto out; |
2379 | + if ((res = vesafb_vbe_getmodes(tsk)) != 0) |
2380 | + goto out; |
2381 | + if (pmi_setpal || ypan) |
2382 | + vesafb_vbe_getpmi(tsk); |
2383 | + |
2384 | + INIT_LIST_HEAD(&info->modelist); |
2385 | + vesafb_vbe_getmonspecs(tsk, info); |
2386 | + |
2387 | +out: kfree(tsk); |
2388 | + return res; |
2389 | +} |
2390 | + |
2391 | +static int __init decode_mode(u32 *xres, u32 *yres, u32 *bpp, u32 *refresh) |
2392 | +{ |
2393 | + int len = strlen(mode_option), i, err = 0; |
2394 | + u8 res_specified = 0, bpp_specified = 0, refresh_specified = 0, |
2395 | + yres_specified = 0; |
2396 | + |
2397 | + for (i = len-1; i >= 0; i--) { |
2398 | + switch (mode_option[i]) { |
2399 | + case '@': |
2400 | + len = i; |
2401 | + if (!refresh_specified && !bpp_specified && |
2402 | + !yres_specified) { |
2403 | + *refresh = simple_strtoul(&mode_option[i+1], |
2404 | + NULL, 0); |
2405 | + refresh_specified = 1; |
2406 | + } else |
2407 | + goto out; |
2408 | + break; |
2409 | + case '-': |
2410 | + len = i; |
2411 | + if (!bpp_specified && !yres_specified) { |
2412 | + *bpp = simple_strtoul(&mode_option[i+1], |
2413 | + NULL, 0); |
2414 | + bpp_specified = 1; |
2415 | + } else |
2416 | + goto out; |
2417 | + break; |
2418 | + case 'x': |
2419 | + if (!yres_specified) { |
2420 | + *yres = simple_strtoul(&mode_option[i+1], |
2421 | + NULL, 0); |
2422 | + yres_specified = 1; |
2423 | + } else |
2424 | + goto out; |
2425 | + break; |
2426 | + case '0'...'9': |
2427 | + break; |
2428 | + default: |
2429 | + goto out; |
2430 | + } |
2431 | + } |
2432 | + |
2433 | + if (i < 0 && yres_specified) { |
2434 | + *xres = simple_strtoul(mode_option, NULL, 0); |
2435 | + res_specified = 1; |
2436 | + } |
2437 | + |
2438 | +out: if (!res_specified || !yres_specified) { |
2439 | + printk(KERN_ERR "vesafb: invalid resolution, " |
2440 | + "%s not specified\n", |
2441 | + (!res_specified) ? "width" : "height"); |
2442 | + err = -EINVAL; |
2443 | + } |
2444 | + |
2445 | + return err; |
2446 | +} |
2447 | + |
2448 | +static int __init vesafb_init_set_mode(struct fb_info *info) |
2449 | +{ |
2450 | + struct fb_videomode *fbmode; |
2451 | + struct fb_videomode mode; |
2452 | + int i, modeid, refresh = 0; |
2453 | + u8 refresh_specified = 0; |
2454 | + |
2455 | + if (!mode_option) |
2456 | + mode_option = CONFIG_FB_VESA_DEFAULT_MODE; |
2457 | + |
2458 | + if (vbemode > 0) { |
2459 | + for (i = 0; i < vbe_modes_cnt; i++) { |
2460 | + if (vbe_modes[i].mode_id == vbemode) { |
2461 | + info->var.vmode = FB_VMODE_NONINTERLACED; |
2462 | + info->var.sync = FB_SYNC_VERT_HIGH_ACT; |
2463 | + vesafb_setup_var(&info->var, info, |
2464 | + &vbe_modes[i]); |
2465 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, |
2466 | + 60, &info->var, info); |
2467 | + /* With pixclock set to 0, the default BIOS |
2468 | + * timings will be used in set_par(). */ |
2469 | + info->var.pixclock = 0; |
2470 | + modeid = i; |
2471 | + goto out; |
2472 | + } |
2473 | + } |
2474 | + printk(KERN_INFO "specified VBE mode %d not found\n", |
2475 | + vbemode); |
2476 | + vbemode = 0; |
2477 | + } |
2478 | + |
2479 | + /* Decode the mode specified on the kernel command line. We save |
2480 | + * the depth into bits_per_pixel, which is wrong, but will work |
2481 | + * anyway. */ |
2482 | + if (decode_mode(&info->var.xres, &info->var.yres, |
2483 | + &info->var.bits_per_pixel, &refresh)) |
2484 | + return -EINVAL; |
2485 | + if (refresh) |
2486 | + refresh_specified = 1; |
2487 | + else |
2488 | + refresh = 60; |
2489 | + |
2490 | + /* Look for a matching VBE mode. We can live if an exact match |
2491 | + * cannot be found. */ |
2492 | + modeid = vesafb_find_vbe_mode(info->var.xres, info->var.yres, |
2493 | + info->var.bits_per_pixel, 0); |
2494 | + |
2495 | + if (modeid == -1) { |
2496 | + return -EINVAL; |
2497 | + } else { |
2498 | + info->var.vmode = FB_VMODE_NONINTERLACED; |
2499 | + info->var.sync = FB_SYNC_VERT_HIGH_ACT; |
2500 | + vesafb_setup_var(&info->var, info, &vbe_modes[modeid]); |
2501 | + } |
2502 | + if (vbe_ib.vbe_version < 0x0300) { |
2503 | + fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, |
2504 | + &info->var, info); |
2505 | + goto out; |
2506 | + } |
2507 | + if (!gtf) { |
2508 | + struct fb_videomode tmode; |
2509 | + |
2510 | + if (refresh_specified) { |
2511 | + fb_var_to_videomode(&tmode, &info->var); |
2512 | + tmode.refresh = refresh; |
2513 | + fbmode = fb_find_nearest_mode(&tmode, |
2514 | + &info->modelist); |
2515 | + } else |
2516 | + fbmode = fb_find_best_mode(&info->var, |
2517 | + &info->modelist); |
2518 | + |
2519 | + if (fbmode->xres == info->var.xres && |
2520 | + fbmode->yres == info->var.yres && |
2521 | + !(fbmode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE)) |
2522 | + && (!refresh_specified || |
2523 | + abs(refresh - fbmode->refresh) <= 5)) { |
2524 | + fb_videomode_to_var(&info->var, fbmode); |
2525 | + return modeid; |
2526 | + } |
2527 | + } |
2528 | + i = FB_MAXTIMINGS; |
2529 | + if (!info->monspecs.gtf) |
2530 | + i = FB_IGNOREMON | FB_VSYNCTIMINGS; |
2531 | + else if (refresh_specified) |
2532 | + i = FB_VSYNCTIMINGS; |
2533 | + if (!fb_get_mode(i, refresh, &info->var, info)) |
2534 | + goto out; |
2535 | + if (info->monspecs.gtf && |
2536 | + !fb_get_mode(FB_MAXTIMINGS, 0, &info->var, info)) |
2537 | + goto out; |
2538 | + /* Use default refresh rate */ |
2539 | + printk(KERN_WARNING "vesafb: using default BIOS refresh rate\n"); |
2540 | + info->var.pixclock = 0; |
2541 | + |
2542 | +out: |
2543 | + fb_var_to_videomode(&mode, &info->var); |
2544 | + fb_add_videomode(&mode, &info->modelist); |
2545 | + return modeid; |
2546 | +} |
2547 | + |
2548 | +static int __init vesafb_probe(struct platform_device *dev) |
2549 | +{ |
2550 | + char entry[16]; |
2551 | + struct fb_info *info; |
2552 | + struct vesafb_mode_ib *mode = NULL; |
2553 | + int err = 0, i, h; |
2554 | + unsigned int size_vmode; |
2555 | + unsigned int size_remap; |
2556 | + unsigned int size_total; |
2557 | + |
2558 | + vesafb_info = info = framebuffer_alloc(sizeof(struct vesafb_par) + |
2559 | + sizeof(u32) * 256, &dev->dev); |
2560 | + if (!info) |
2561 | + return -ENOMEM; |
2562 | + |
2563 | + if (vesafb_wait_for_thread()) { |
2564 | + printk(KERN_ERR "vesafb: vesafb thread not running\n"); |
2565 | + framebuffer_release(info); |
2566 | + return -EINVAL; |
2567 | + } |
2568 | + |
2569 | + if (vesafb_vbe_init(info)) { |
2570 | + printk(KERN_ERR "vesafb: vbe_init failed\n"); |
2571 | + err = -EINVAL; |
2572 | + goto out; |
2573 | + } |
2574 | + |
2575 | + vesafb_fix.ypanstep = ypan ? 1 : 0; |
2576 | + vesafb_fix.ywrapstep = (ypan>1) ? 1 : 0; |
2577 | + |
2578 | + info->pseudo_palette = ((u8*)info->par + sizeof(struct vesafb_par)); |
2579 | + info->fbops = &vesafb_ops; |
2580 | + info->var = vesafb_defined; |
2581 | + info->fix = vesafb_fix; |
2582 | + |
2583 | + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { |
2584 | + err = -ENXIO; |
2585 | + goto out; |
2586 | + } |
2587 | + |
2588 | + i = vesafb_init_set_mode(info); |
2589 | + if (i < 0) { |
2590 | + err = -EINVAL; |
2591 | + goto out_cmap; |
2592 | + } else |
2593 | + mode = &vbe_modes[i]; |
2594 | + |
2595 | + /* Disable blanking if the user requested so. */ |
2596 | + if (!blank) { |
2597 | + info->fbops->fb_blank = NULL; |
2598 | + } |
2599 | + |
2600 | + /* Find out how much IO memory is required for the mode with |
2601 | + * the highest resolution. */ |
2602 | + size_remap = 0; |
2603 | + for (i = 0; i < vbe_modes_cnt; i++) { |
2604 | + h = vbe_modes[i].bytes_per_scan_line * vbe_modes[i].y_res; |
2605 | + if (h > size_remap) |
2606 | + size_remap = h; |
2607 | + } |
2608 | + size_remap *= 2; |
2609 | + |
2610 | + /* size_vmode -- that is the amount of memory needed for the |
2611 | + * used video mode, i.e. the minimum amount of |
2612 | + * memory we need. */ |
2613 | + if (mode != NULL) { |
2614 | + size_vmode = info->var.yres * mode->bytes_per_scan_line; |
2615 | + } else { |
2616 | + size_vmode = info->var.yres * info->var.xres * |
2617 | + ((info->var.bits_per_pixel + 7) >> 3); |
2618 | + } |
2619 | + |
2620 | + /* size_total -- all video memory we have. Used for mtrr |
2621 | + * entries, ressource allocation and bounds |
2622 | + * checking. */ |
2623 | + size_total = vbe_ib.total_memory * 65536; |
2624 | + if (vram_total) |
2625 | + size_total = vram_total * 1024 * 1024; |
2626 | + if (size_total < size_vmode) |
2627 | + size_total = size_vmode; |
2628 | + ((struct vesafb_par*)(info->par))->mem_total = size_total; |
2629 | + |
2630 | + /* size_remap -- the amount of video memory we are going to |
2631 | + * use for vesafb. With modern cards it is no |
2632 | + * option to simply use size_total as th |
2633 | + * wastes plenty of kernel address space. */ |
2634 | + if (vram_remap) |
2635 | + size_remap = vram_remap * 1024 * 1024; |
2636 | + if (size_remap < size_vmode) |
2637 | + size_remap = size_vmode; |
2638 | + if (size_remap > size_total) |
2639 | + size_remap = size_total; |
2640 | + |
2641 | + info->fix.smem_len = size_remap; |
2642 | + info->fix.smem_start = mode->phys_base_ptr; |
2643 | + |
2644 | + /* We have to set it here, because when setup_var() was called, |
2645 | + * smem_len wasn't defined yet. */ |
2646 | + info->var.yres_virtual = info->fix.smem_len / |
2647 | + mode->bytes_per_scan_line; |
2648 | + |
2649 | + if (ypan && info->var.yres_virtual > info->var.yres) { |
2650 | + printk(KERN_INFO "vesafb: scrolling: %s " |
2651 | + "using protected mode interface, " |
2652 | + "yres_virtual=%d\n", |
2653 | + (ypan > 1) ? "ywrap" : "ypan",info->var.yres_virtual); |
2654 | + } else { |
2655 | + printk(KERN_INFO "vesafb: scrolling: redraw\n"); |
2656 | + info->var.yres_virtual = info->var.yres; |
2657 | + ypan = 0; |
2658 | + } |
2659 | + |
2660 | + info->flags = FBINFO_FLAG_DEFAULT | |
2661 | + (ypan) ? FBINFO_HWACCEL_YPAN : 0; |
2662 | + |
2663 | + if (!ypan) |
2664 | + info->fbops->fb_pan_display = NULL; |
2665 | + |
2666 | + if (!request_mem_region(info->fix.smem_start, size_total, "vesafb")) { |
2667 | + printk(KERN_WARNING "vesafb: cannot reserve video memory at " |
2668 | + "0x%lx\n", info->fix.smem_start); |
2669 | + /* We cannot make this fatal. Sometimes this comes from magic |
2670 | + spaces our resource handlers simply don't know about. */ |
2671 | + } |
2672 | + |
2673 | + info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); |
2674 | + |
2675 | + if (!info->screen_base) { |
2676 | + printk(KERN_ERR |
2677 | + "vesafb: abort, cannot ioremap video memory " |
2678 | + "0x%x @ 0x%lx\n", |
2679 | + info->fix.smem_len, info->fix.smem_start); |
2680 | + err = -EIO; |
2681 | + goto out_mem; |
2682 | + } |
2683 | + |
2684 | + /* Request failure does not faze us, as vgacon probably has this |
2685 | + region already (FIXME) */ |
2686 | + request_region(0x3c0, 32, "vesafb"); |
2687 | + |
2688 | +#ifdef CONFIG_MTRR |
2689 | + if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) { |
2690 | + int temp_size = size_total; |
2691 | + unsigned int type = 0; |
2692 | + |
2693 | + switch (mtrr) { |
2694 | + case 1: |
2695 | + type = MTRR_TYPE_UNCACHABLE; |
2696 | + break; |
2697 | + case 2: |
2698 | + type = MTRR_TYPE_WRBACK; |
2699 | + break; |
2700 | + case 3: |
2701 | + type = MTRR_TYPE_WRCOMB; |
2702 | + break; |
2703 | + case 4: |
2704 | + type = MTRR_TYPE_WRTHROUGH; |
2705 | + break; |
2706 | + default: |
2707 | + type = 0; |
2708 | + break; |
2709 | + } |
2710 | + |
2711 | + if (type) { |
2712 | + int rc; |
2713 | + |
2714 | + /* Find the largest power-of-two */ |
2715 | + while (temp_size & (temp_size - 1)) |
2716 | + temp_size &= (temp_size - 1); |
2717 | + |
2718 | + /* Try and find a power of two to add */ |
2719 | + do { |
2720 | + rc = mtrr_add(info->fix.smem_start, |
2721 | + temp_size, type, 1); |
2722 | + temp_size >>= 1; |
2723 | + } while (temp_size >= PAGE_SIZE && rc == -EINVAL); |
2724 | + } |
2725 | + } |
2726 | +#endif /* CONFIG_MTRR */ |
2727 | + |
2728 | + if (register_framebuffer(info) < 0) { |
2729 | + printk(KERN_ERR |
2730 | + "vesafb: failed to register framebuffer device\n"); |
2731 | + err = -EINVAL; |
2732 | + goto out_mem; |
2733 | + } |
2734 | + |
2735 | + printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, " |
2736 | + "using %dk, total %dk\n", info->fix.smem_start, |
2737 | + info->screen_base, size_remap/1024, size_total/1024); |
2738 | + printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
2739 | + info->fix.id); |
2740 | + |
2741 | + sprintf(entry, "fb%d", info->node); |
2742 | + proc_mkdir(entry, 0); |
2743 | + |
2744 | + sprintf(entry, "fb%d/modes", info->node); |
2745 | + create_proc_read_entry(entry, 0, 0, vesafb_read_proc_modes, NULL); |
2746 | + |
2747 | + sprintf(entry, "fb%d/vbe_info", info->node); |
2748 | + create_proc_read_entry(entry, 0, 0, vesafb_read_proc_vbe_info, NULL); |
2749 | + return 0; |
2750 | + |
2751 | +out_mem: |
2752 | + release_mem_region(info->fix.smem_start, size_total); |
2753 | + if (!list_empty(&info->modelist)) |
2754 | + fb_destroy_modelist(&info->modelist); |
2755 | + fb_destroy_modedb(info->monspecs.modedb); |
2756 | +out_cmap: |
2757 | + fb_dealloc_cmap(&info->cmap); |
2758 | +out: |
2759 | + framebuffer_release(info); |
2760 | + vesafb_info = NULL; |
2761 | + kfree(vbe_modes); |
2762 | + vbe_modes = NULL; |
2763 | + return err; |
2764 | +} |
2765 | + |
2766 | +int __init vesafb_init(void) |
2767 | +{ |
2768 | + int ret; |
2769 | +#ifndef MODULE |
2770 | + char *option = NULL; |
2771 | + |
2772 | + if (fb_get_options("vesafb", &option)) |
2773 | + return -ENODEV; |
2774 | + vesafb_setup(option); |
2775 | +#endif |
2776 | + ret = platform_driver_register(&vesafb_driver); |
2777 | + |
2778 | + if (!ret) { |
2779 | + vesafb_device = platform_device_alloc("vesafb", 0); |
2780 | + |
2781 | + if (vesafb_device) |
2782 | + ret = platform_device_add(vesafb_device); |
2783 | + else |
2784 | + ret = -ENOMEM; |
2785 | + |
2786 | + if (ret) { |
2787 | + platform_device_put(vesafb_device); |
2788 | + platform_driver_unregister(&vesafb_driver); |
2789 | + } |
2790 | + } |
2791 | + return ret; |
2792 | +} |
2793 | + |
2794 | +module_init(vesafb_init); |
2795 | + |
2796 | +#ifdef MODULE |
2797 | +void __exit vesafb_exit(void) |
2798 | +{ |
2799 | + char entry[16]; |
2800 | + |
2801 | + if (vesafb_info) |
2802 | + unregister_framebuffer(vesafb_info); |
2803 | + |
2804 | + platform_device_unregister(vesafb_device); |
2805 | + platform_driver_unregister(&vesafb_driver); |
2806 | + |
2807 | + if (vesafb_info) { |
2808 | + struct vesafb_par *par = (struct vesafb_par*)vesafb_info->par; |
2809 | + |
2810 | + sprintf(entry, "fb%d/modes", vesafb_info->node); |
2811 | + remove_proc_entry(entry, NULL); |
2812 | + |
2813 | + sprintf(entry, "fb%d/vbe_info", vesafb_info->node); |
2814 | + remove_proc_entry(entry, NULL); |
2815 | + |
2816 | + sprintf(entry, "fb%d", vesafb_info->node); |
2817 | + remove_proc_entry(entry, NULL); |
2818 | + |
2819 | + iounmap(vesafb_info->screen_base); |
2820 | + release_mem_region(vesafb_info->fix.smem_start, |
2821 | + par->mem_total); |
2822 | + fb_dealloc_cmap(&vesafb_info->cmap); |
2823 | + if (!list_empty(&vesafb_info->modelist)) |
2824 | + fb_destroy_modelist(&vesafb_info->modelist); |
2825 | + fb_destroy_modedb(vesafb_info->monspecs.modedb); |
2826 | + framebuffer_release(vesafb_info); |
2827 | + } |
2828 | + |
2829 | + if (vbe_modes != NULL) |
2830 | + kfree(vbe_modes); |
2831 | +} |
2832 | + |
2833 | +module_exit(vesafb_exit); |
2834 | + |
2835 | +static inline int param_get_scroll(char *buffer, struct kernel_param *kp) |
2836 | +{ |
2837 | + return 0; |
2838 | +} |
2839 | +static inline int param_set_scroll(const char *val, struct kernel_param *kp) |
2840 | +{ |
2841 | + ypan = 0; |
2842 | + |
2843 | + if (! strcmp(val, "redraw")) |
2844 | + ypan = 0; |
2845 | + else if (! strcmp(val, "ypan")) |
2846 | + ypan = 1; |
2847 | + else if (! strcmp(val, "ywrap")) |
2848 | + ypan = 2; |
2849 | + |
2850 | + return 0; |
2851 | +} |
2852 | + |
2853 | +#define param_check_scroll(name, p) __param_check(name, p, void); |
2854 | + |
2855 | +module_param_named(scroll, ypan, scroll, 0); |
2856 | +MODULE_PARM_DESC(scroll,"Scrolling mode, set to 'redraw', 'ypan' or 'ywrap'"); |
2857 | +module_param_named(vgapal, pmi_setpal, invbool, 0); |
2858 | +MODULE_PARM_DESC(vgapal,"bool: set palette using VGA registers"); |
2859 | +module_param_named(pmipal, pmi_setpal, bool, 0); |
2860 | +MODULE_PARM_DESC(pmipal,"bool: set palette using PMI calls"); |
2861 | +module_param(mtrr, uint, 0); |
2862 | +MODULE_PARM_DESC(mtrr,"Memory Type Range Registers setting. Use 0 to disable."); |
2863 | +module_param(blank, bool, 1); |
2864 | +MODULE_PARM_DESC(blank,"bool: enable hardware blanking"); |
2865 | +module_param(nocrtc, bool, 0); |
2866 | +MODULE_PARM_DESC(nocrtc,"bool: ignore CRTC timings when setting modes"); |
2867 | +module_param(noedid, bool, 0); |
2868 | +MODULE_PARM_DESC(noedid,"bool: ignore EDID-provided monitor limits " |
2869 | + "when setting modes"); |
2870 | +module_param(gtf, bool, 0); |
2871 | +MODULE_PARM_DESC(gtf,"bool: force use of VESA GTF to calculate mode timings"); |
2872 | +module_param(vram_remap, uint, 0); |
2873 | +MODULE_PARM_DESC(vram_remap,"Set amount of video memory to be used [MiB]"); |
2874 | +module_param(vram_total, uint, 0); |
2875 | +MODULE_PARM_DESC(vram_total,"Set total amount of video memoery [MiB]"); |
2876 | +module_param(maxclk, ushort, 0); |
2877 | +MODULE_PARM_DESC(maxclk,"Maximum pixelclock [MHz], overrides EDID data"); |
2878 | +module_param(maxhf, ushort, 0); |
2879 | +MODULE_PARM_DESC(maxhf,"Maximum horizontal frequency [kHz], " |
2880 | + "overrides EDID data"); |
2881 | +module_param(maxvf, ushort, 0); |
2882 | +MODULE_PARM_DESC(maxvf,"Maximum vertical frequency [Hz], " |
2883 | + "overrides EDID data"); |
2884 | +module_param_named(mode, mode_option, charp, 0); |
2885 | +MODULE_PARM_DESC(mode, "Specify resolution as " |
2886 | + "\"<xres>x<yres>[-<bpp>][@<refresh>]\""); |
2887 | +module_param(vbemode, ushort, 0); |
2888 | +MODULE_PARM_DESC(vbemode,"VBE mode number to set, overrides 'mode' setting"); |
2889 | + |
2890 | +#endif /* MODULE */ |
2891 | + |
2892 | +MODULE_LICENSE("GPL"); |
2893 | +MODULE_AUTHOR("Michal Januszewski"); |
2894 | +MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards"); |
2895 | + |
2896 | diff --git a/include/linux/sched.h b/include/linux/sched.h |
2897 | index 4463735..7283e48 100644 |
2898 | --- a/include/linux/sched.h |
2899 | +++ b/include/linux/sched.h |
2900 | @@ -1390,6 +1390,8 @@ extern void mmput(struct mm_struct *); |
2901 | extern struct mm_struct *get_task_mm(struct task_struct *task); |
2902 | /* Remove the current tasks stale references to the old mm_struct */ |
2903 | extern void mm_release(struct task_struct *, struct mm_struct *); |
2904 | +/* Create a new mm for a kernel thread */ |
2905 | +extern int set_new_mm(void); |
2906 | |
2907 | extern int copy_thread(int, unsigned long, unsigned long, unsigned long, struct task_struct *, struct pt_regs *); |
2908 | extern void flush_thread(void); |
2909 | diff --git a/include/video/vesa.h b/include/video/vesa.h |
2910 | new file mode 100644 |
2911 | index 0000000..bb5abcf |
2912 | --- /dev/null |
2913 | +++ b/include/video/vesa.h |
2914 | @@ -0,0 +1,150 @@ |
2915 | +#if 0 |
2916 | +#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , \ |
2917 | + ## args) |
2918 | +#else |
2919 | +#define DPRINTK(fmt, args...) |
2920 | +#endif |
2921 | + |
2922 | +#define p_crtc(arg) ((struct vesafb_crtc_ib*)(arg)) |
2923 | +#define p_vbe(arg) ((struct vesafb_vbe_ib*)(arg)) |
2924 | +#define p_mode(arg) ((struct vesafb_mode_ib*)(arg)) |
2925 | + |
2926 | +struct vesafb_task { |
2927 | + u8 flags; |
2928 | + void *buf; |
2929 | + int buf_len; |
2930 | + struct vm86_regs regs; |
2931 | + struct list_head node; |
2932 | + struct completion done; |
2933 | +}; |
2934 | + |
2935 | +/* Vesafb task flags and masks */ |
2936 | +#define TF_CALL 0x00 |
2937 | +#define TF_EXIT 0x01 |
2938 | +#define TF_GETVBEIB 0x02 |
2939 | +#define TF_BUF_DI 0x04 |
2940 | +#define TF_BUF_BX 0x08 |
2941 | +#define TF_RETURN_BUF 0x10 |
2942 | + |
2943 | +/* Macros and functions for manipulating vesafb tasks */ |
2944 | +#define vesafb_create_task(task) \ |
2945 | +do { \ |
2946 | + task = kmalloc(sizeof(struct vesafb_task), GFP_ATOMIC); \ |
2947 | + if (task) \ |
2948 | + memset(task, 0, sizeof(struct vesafb_task)); \ |
2949 | + init_completion(&task->done); \ |
2950 | +} while (0) |
2951 | + |
2952 | +#define vesafb_wait_for_task(task) wait_for_completion(&task->done); |
2953 | +#define vesafb_reset_task(task) init_completion(&task->done); |
2954 | +int vesafb_queue_task(struct vesafb_task *task); |
2955 | + |
2956 | +/* Functions for controlling the vesafb thread */ |
2957 | +int vesafb_wait_for_thread(void); |
2958 | + |
2959 | +#define VBE_CAP_CAN_SWITCH_DAC 0x01 |
2960 | +#define VBE_CAP_VGACOMPAT 0x02 |
2961 | + |
2962 | +/* This struct is 512 bytes long */ |
2963 | +struct vesafb_vbe_ib { |
2964 | + char vbe_signature[4]; |
2965 | + u16 vbe_version; |
2966 | + u32 oem_string_ptr; |
2967 | + u32 capabilities; |
2968 | + u32 mode_list_ptr; |
2969 | + u16 total_memory; |
2970 | + u16 oem_software_rev; |
2971 | + u32 oem_vendor_name_ptr; |
2972 | + u32 oem_product_name_ptr; |
2973 | + u32 oem_product_rev_ptr; |
2974 | + u8 reserved[222]; |
2975 | + char oem_data[256]; |
2976 | +} __attribute__ ((packed)); |
2977 | + |
2978 | +struct vesafb_crtc_ib { |
2979 | + u16 horiz_total; |
2980 | + u16 horiz_start; |
2981 | + u16 horiz_end; |
2982 | + u16 vert_total; |
2983 | + u16 vert_start; |
2984 | + u16 vert_end; |
2985 | + u8 flags; |
2986 | + u32 pixel_clock; |
2987 | + u16 refresh_rate; |
2988 | + u8 reserved[40]; |
2989 | +} __attribute__ ((packed)); |
2990 | + |
2991 | +#define VBE_MODE_VGACOMPAT 0x20 |
2992 | + |
2993 | +struct vesafb_mode_ib { |
2994 | + /* for all VBE revisions */ |
2995 | + u16 mode_attr; |
2996 | + u8 winA_attr; |
2997 | + u8 winB_attr; |
2998 | + u16 win_granularity; |
2999 | + u16 win_size; |
3000 | + u16 winA_seg; |
3001 | + u16 winB_seg; |
3002 | + u32 win_func_ptr; |
3003 | + u16 bytes_per_scan_line; |
3004 | + |
3005 | + /* for VBE 1.2+ */ |
3006 | + u16 x_res; |
3007 | + u16 y_res; |
3008 | + u8 x_char_size; |
3009 | + u8 y_char_size; |
3010 | + u8 planes; |
3011 | + u8 bits_per_pixel; |
3012 | + u8 banks; |
3013 | + u8 memory_model; |
3014 | + u8 bank_size; |
3015 | + u8 image_pages; |
3016 | + u8 reserved1; |
3017 | + |
3018 | + /* Direct color fields for direct/6 and YUV/7 memory models. */ |
3019 | + /* Offsets are bit positions of lsb in the mask. */ |
3020 | + u8 red_len; |
3021 | + u8 red_off; |
3022 | + u8 green_len; |
3023 | + u8 green_off; |
3024 | + u8 blue_len; |
3025 | + u8 blue_off; |
3026 | + u8 rsvd_len; |
3027 | + u8 rsvd_off; |
3028 | + u8 direct_color_info; /* direct color mode attributes */ |
3029 | + |
3030 | + /* for VBE 2.0+ */ |
3031 | + u32 phys_base_ptr; |
3032 | + u8 reserved2[6]; |
3033 | + |
3034 | + /* for VBE 3.0+ */ |
3035 | + u16 lin_bytes_per_scan_line; |
3036 | + u8 bnk_image_pages; |
3037 | + u8 lin_image_pages; |
3038 | + u8 lin_red_len; |
3039 | + u8 lin_red_off; |
3040 | + u8 lin_green_len; |
3041 | + u8 lin_green_off; |
3042 | + u8 lin_blue_len; |
3043 | + u8 lin_blue_off; |
3044 | + u8 lin_rsvd_len; |
3045 | + u8 lin_rsvd_off; |
3046 | + u32 max_pixel_clock; |
3047 | + u16 mode_id; |
3048 | + u8 depth; |
3049 | +} __attribute__ ((packed)); |
3050 | + |
3051 | +struct vesafb_pal_entry { |
3052 | + u_char blue, green, red, pad; |
3053 | +} __attribute__ ((packed)); |
3054 | + |
3055 | +struct vesafb_par { |
3056 | + u8 *vbe_state; |
3057 | + int vbe_state_size; |
3058 | + atomic_t ref_count; |
3059 | + |
3060 | + u32 mem_total; |
3061 | + int mode_idx; |
3062 | + struct vesafb_crtc_ib crtc; |
3063 | +}; |
3064 | + |
3065 | diff --git a/kernel/fork.c b/kernel/fork.c |
3066 | index fc723e5..dc8f93b 100644 |
3067 | --- a/kernel/fork.c |
3068 | +++ b/kernel/fork.c |
3069 | @@ -100,6 +100,7 @@ struct kmem_cache *fs_cachep; |
3070 | |
3071 | /* SLAB cache for vm_area_struct structures */ |
3072 | struct kmem_cache *vm_area_cachep; |
3073 | +EXPORT_SYMBOL_GPL(vm_area_cachep); |
3074 | |
3075 | /* SLAB cache for mm_struct structures (tsk->mm) */ |
3076 | static struct kmem_cache *mm_cachep; |
3077 | @@ -399,6 +400,40 @@ void mmput(struct mm_struct *mm) |
3078 | EXPORT_SYMBOL_GPL(mmput); |
3079 | |
3080 | /** |
3081 | + * set_new_mm - allocate, init and activate a new mm for a kernel thread |
3082 | + */ |
3083 | +int set_new_mm(void) |
3084 | +{ |
3085 | + struct mm_struct *mm; |
3086 | + struct task_struct *tsk = current; |
3087 | + struct mm_struct *active_mm; |
3088 | + |
3089 | + mm = mm_alloc(); |
3090 | + if (!mm) |
3091 | + goto fail_nomem; |
3092 | + if (init_new_context(current,mm)) |
3093 | + goto fail_nocontext; |
3094 | + |
3095 | + task_lock(tsk); |
3096 | + tsk->flags |= PF_BORROWED_MM; |
3097 | + active_mm = tsk->active_mm; |
3098 | + current->mm = mm; |
3099 | + current->active_mm = mm; |
3100 | + activate_mm(active_mm, mm); |
3101 | + task_unlock(current); |
3102 | + |
3103 | + /* Drop the previous active_mm */ |
3104 | + mmdrop(active_mm); |
3105 | + return 0; |
3106 | + |
3107 | +fail_nocontext: |
3108 | + mmdrop(mm); |
3109 | +fail_nomem: |
3110 | + return -EINVAL; |
3111 | +} |
3112 | +EXPORT_SYMBOL_GPL(set_new_mm); |
3113 | + |
3114 | +/** |
3115 | * get_task_mm - acquire a reference to the task's mm |
3116 | * |
3117 | * Returns %NULL if the task has no mm. Checks PF_BORROWED_MM (meaning |
3118 | diff --git a/mm/memory.c b/mm/memory.c |
3119 | index 563792f..a9519ea 100644 |
3120 | --- a/mm/memory.c |
3121 | +++ b/mm/memory.c |
3122 | @@ -1193,6 +1193,7 @@ int zeromap_page_range(struct vm_area_struct *vma, |
3123 | } while (pgd++, addr = next, addr != end); |
3124 | return err; |
3125 | } |
3126 | +EXPORT_SYMBOL_GPL(zeromap_page_range); |
3127 | |
3128 | pte_t * fastcall get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl) |
3129 | { |
3130 | diff --git a/mm/mmap.c b/mm/mmap.c |
3131 | index 9717337..6fa5b1c 100644 |
3132 | --- a/mm/mmap.c |
3133 | +++ b/mm/mmap.c |
3134 | @@ -2024,6 +2024,7 @@ int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma) |
3135 | vma_link(mm, vma, prev, rb_link, rb_parent); |
3136 | return 0; |
3137 | } |
3138 | +EXPORT_SYMBOL_GPL(insert_vm_struct); |
3139 | |
3140 | /* |
3141 | * Copy the vma structure to a new location in the same mm, |