1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * SiS 300/540/630[S]/730[S], |
4 | * SiS 315[E|PRO]/550/[M]650/651/[M]661[F|M]X/740/[M]741[GX]/330/[M]760[GX], |
5 | * XGI V3XT/V5/V8, Z7 |
6 | * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 |
7 | * |
8 | * 2D acceleration part |
9 | * |
10 | * Based on the XFree86/X.org driver which is |
11 | * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria |
12 | * |
13 | * Author: Thomas Winischhofer <thomas@winischhofer.net> |
14 | * (see http://www.winischhofer.net/ |
15 | * for more information and updates) |
16 | */ |
17 | |
18 | #include <linux/module.h> |
19 | #include <linux/kernel.h> |
20 | #include <linux/fb.h> |
21 | #include <linux/ioport.h> |
22 | #include <linux/types.h> |
23 | #include <asm/io.h> |
24 | |
25 | #include "sis.h" |
26 | #include "sis_accel.h" |
27 | |
28 | static const u8 sisALUConv[] = |
29 | { |
30 | 0x00, /* dest = 0; 0, GXclear, 0 */ |
31 | 0x88, /* dest &= src; DSa, GXand, 0x1 */ |
32 | 0x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */ |
33 | 0xCC, /* dest = src; S, GXcopy, 0x3 */ |
34 | 0x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */ |
35 | 0xAA, /* dest = dest; D, GXnoop, 0x5 */ |
36 | 0x66, /* dest = ^src; DSx, GXxor, 0x6 */ |
37 | 0xEE, /* dest |= src; DSo, GXor, 0x7 */ |
38 | 0x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */ |
39 | 0x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */ |
40 | 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */ |
41 | 0xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */ |
42 | 0x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */ |
43 | 0xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */ |
44 | 0x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */ |
45 | 0xFF, /* dest = 0xFF; 1, GXset, 0xF */ |
46 | }; |
47 | /* same ROP but with Pattern as Source */ |
48 | static const u8 sisPatALUConv[] = |
49 | { |
50 | 0x00, /* dest = 0; 0, GXclear, 0 */ |
51 | 0xA0, /* dest &= src; DPa, GXand, 0x1 */ |
52 | 0x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */ |
53 | 0xF0, /* dest = src; P, GXcopy, 0x3 */ |
54 | 0x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */ |
55 | 0xAA, /* dest = dest; D, GXnoop, 0x5 */ |
56 | 0x5A, /* dest = ^src; DPx, GXxor, 0x6 */ |
57 | 0xFA, /* dest |= src; DPo, GXor, 0x7 */ |
58 | 0x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */ |
59 | 0xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */ |
60 | 0x55, /* dest = ~dest; Dn, GXInvert, 0xA */ |
61 | 0xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */ |
62 | 0x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */ |
63 | 0xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */ |
64 | 0x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */ |
65 | 0xFF, /* dest = 0xFF; 1, GXset, 0xF */ |
66 | }; |
67 | |
68 | static const int myrops[] = { |
69 | 3, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 |
70 | }; |
71 | |
72 | /* 300 series ----------------------------------------------------- */ |
73 | #ifdef CONFIG_FB_SIS_300 |
74 | static void |
75 | SiS300Sync(struct sis_video_info *ivideo) |
76 | { |
77 | SiS300Idle |
78 | } |
79 | |
80 | static void |
81 | SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir, |
82 | int rop, int trans_color) |
83 | { |
84 | SiS300SetupDSTColorDepth(ivideo->DstColor); |
85 | SiS300SetupSRCPitch(ivideo->video_linelength) |
86 | SiS300SetupDSTRect(ivideo->video_linelength, 0xffff) |
87 | |
88 | if(trans_color != -1) { |
89 | SiS300SetupROP(0x0A) |
90 | SiS300SetupSRCTrans(trans_color) |
91 | SiS300SetupCMDFlag(TRANSPARENT_BITBLT) |
92 | } else { |
93 | SiS300SetupROP(sisALUConv[rop]) |
94 | } |
95 | if(xdir > 0) { |
96 | SiS300SetupCMDFlag(X_INC) |
97 | } |
98 | if(ydir > 0) { |
99 | SiS300SetupCMDFlag(Y_INC) |
100 | } |
101 | } |
102 | |
103 | static void |
104 | SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, |
105 | int src_y, int dst_x, int dst_y, int width, int height) |
106 | { |
107 | u32 srcbase = 0, dstbase = 0; |
108 | |
109 | if(src_y >= 2048) { |
110 | srcbase = ivideo->video_linelength * src_y; |
111 | src_y = 0; |
112 | } |
113 | if(dst_y >= 2048) { |
114 | dstbase = ivideo->video_linelength * dst_y; |
115 | dst_y = 0; |
116 | } |
117 | |
118 | SiS300SetupSRCBase(srcbase); |
119 | SiS300SetupDSTBase(dstbase); |
120 | |
121 | if(!(ivideo->CommandReg & X_INC)) { |
122 | src_x += width-1; |
123 | dst_x += width-1; |
124 | } |
125 | if(!(ivideo->CommandReg & Y_INC)) { |
126 | src_y += height-1; |
127 | dst_y += height-1; |
128 | } |
129 | SiS300SetupRect(width, height) |
130 | SiS300SetupSRCXY(src_x, src_y) |
131 | SiS300SetupDSTXY(dst_x, dst_y) |
132 | SiS300DoCMD |
133 | } |
134 | |
135 | static void |
136 | SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop) |
137 | { |
138 | SiS300SetupPATFG(color) |
139 | SiS300SetupDSTRect(ivideo->video_linelength, 0xffff) |
140 | SiS300SetupDSTColorDepth(ivideo->DstColor); |
141 | SiS300SetupROP(sisPatALUConv[rop]) |
142 | SiS300SetupCMDFlag(PATFG) |
143 | } |
144 | |
145 | static void |
146 | SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h) |
147 | { |
148 | u32 dstbase = 0; |
149 | |
150 | if(y >= 2048) { |
151 | dstbase = ivideo->video_linelength * y; |
152 | y = 0; |
153 | } |
154 | SiS300SetupDSTBase(dstbase) |
155 | SiS300SetupDSTXY(x,y) |
156 | SiS300SetupRect(w,h) |
157 | SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT) |
158 | SiS300DoCMD |
159 | } |
160 | #endif |
161 | |
162 | /* 315/330/340 series ---------------------------------------------- */ |
163 | |
164 | #ifdef CONFIG_FB_SIS_315 |
165 | static void |
166 | SiS310Sync(struct sis_video_info *ivideo) |
167 | { |
168 | SiS310Idle |
169 | } |
170 | |
171 | static void |
172 | SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color) |
173 | { |
174 | SiS310SetupDSTColorDepth(ivideo->DstColor); |
175 | SiS310SetupSRCPitch(ivideo->video_linelength) |
176 | SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff) |
177 | if(trans_color != -1) { |
178 | SiS310SetupROP(0x0A) |
179 | SiS310SetupSRCTrans(trans_color) |
180 | SiS310SetupCMDFlag(TRANSPARENT_BITBLT) |
181 | } else { |
182 | SiS310SetupROP(sisALUConv[rop]) |
183 | /* Set command - not needed, both 0 */ |
184 | /* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */ |
185 | } |
186 | SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth) |
187 | /* The chip is smart enough to know the direction */ |
188 | } |
189 | |
190 | static void |
191 | SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y, |
192 | int dst_x, int dst_y, int width, int height) |
193 | { |
194 | u32 srcbase = 0, dstbase = 0; |
195 | int mymin = min(src_y, dst_y); |
196 | int mymax = max(src_y, dst_y); |
197 | |
198 | /* Although the chip knows the direction to use |
199 | * if the source and destination areas overlap, |
200 | * that logic fails if we fiddle with the bitmap |
201 | * addresses. Therefore, we check if the source |
202 | * and destination blitting areas overlap and |
203 | * adapt the bitmap addresses synchronously |
204 | * if the coordinates exceed the valid range. |
205 | * The areas do not overlap, we do our |
206 | * normal check. |
207 | */ |
208 | if((mymax - mymin) < height) { |
209 | if((src_y >= 2048) || (dst_y >= 2048)) { |
210 | srcbase = ivideo->video_linelength * mymin; |
211 | dstbase = ivideo->video_linelength * mymin; |
212 | src_y -= mymin; |
213 | dst_y -= mymin; |
214 | } |
215 | } else { |
216 | if(src_y >= 2048) { |
217 | srcbase = ivideo->video_linelength * src_y; |
218 | src_y = 0; |
219 | } |
220 | if(dst_y >= 2048) { |
221 | dstbase = ivideo->video_linelength * dst_y; |
222 | dst_y = 0; |
223 | } |
224 | } |
225 | |
226 | srcbase += ivideo->video_offset; |
227 | dstbase += ivideo->video_offset; |
228 | |
229 | SiS310SetupSRCBase(srcbase); |
230 | SiS310SetupDSTBase(dstbase); |
231 | SiS310SetupRect(width, height) |
232 | SiS310SetupSRCXY(src_x, src_y) |
233 | SiS310SetupDSTXY(dst_x, dst_y) |
234 | SiS310DoCMD |
235 | } |
236 | |
237 | static void |
238 | SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop) |
239 | { |
240 | SiS310SetupPATFG(color) |
241 | SiS310SetupDSTRect(ivideo->video_linelength, 0x0fff) |
242 | SiS310SetupDSTColorDepth(ivideo->DstColor); |
243 | SiS310SetupROP(sisPatALUConv[rop]) |
244 | SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth) |
245 | } |
246 | |
247 | static void |
248 | SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h) |
249 | { |
250 | u32 dstbase = 0; |
251 | |
252 | if(y >= 2048) { |
253 | dstbase = ivideo->video_linelength * y; |
254 | y = 0; |
255 | } |
256 | dstbase += ivideo->video_offset; |
257 | SiS310SetupDSTBase(dstbase) |
258 | SiS310SetupDSTXY(x,y) |
259 | SiS310SetupRect(w,h) |
260 | SiS310SetupCMDFlag(BITBLT) |
261 | SiS310DoCMD |
262 | } |
263 | #endif |
264 | |
265 | /* --------------------------------------------------------------------- */ |
266 | |
267 | /* The exported routines */ |
268 | |
269 | int sisfb_initaccel(struct sis_video_info *ivideo) |
270 | { |
271 | #ifdef SISFB_USE_SPINLOCKS |
272 | spin_lock_init(&ivideo->lockaccel); |
273 | #endif |
274 | return 0; |
275 | } |
276 | |
277 | void sisfb_syncaccel(struct sis_video_info *ivideo) |
278 | { |
279 | if(ivideo->sisvga_engine == SIS_300_VGA) { |
280 | #ifdef CONFIG_FB_SIS_300 |
281 | SiS300Sync(ivideo); |
282 | #endif |
283 | } else { |
284 | #ifdef CONFIG_FB_SIS_315 |
285 | SiS310Sync(ivideo); |
286 | #endif |
287 | } |
288 | } |
289 | |
290 | int fbcon_sis_sync(struct fb_info *info) |
291 | { |
292 | struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
293 | CRITFLAGS |
294 | |
295 | if((!ivideo->accel) || (!ivideo->engineok)) |
296 | return 0; |
297 | |
298 | CRITBEGIN |
299 | sisfb_syncaccel(ivideo); |
300 | CRITEND |
301 | |
302 | return 0; |
303 | } |
304 | |
305 | void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect) |
306 | { |
307 | struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
308 | u32 col = 0; |
309 | u32 vxres = info->var.xres_virtual; |
310 | u32 vyres = info->var.yres_virtual; |
311 | int width, height; |
312 | CRITFLAGS |
313 | |
314 | if(info->state != FBINFO_STATE_RUNNING) |
315 | return; |
316 | |
317 | if((!ivideo->accel) || (!ivideo->engineok)) { |
318 | cfb_fillrect(info, rect); |
319 | return; |
320 | } |
321 | |
322 | if(!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres) |
323 | return; |
324 | |
325 | /* Clipping */ |
326 | width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width; |
327 | height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height; |
328 | |
329 | switch(info->var.bits_per_pixel) { |
330 | case 8: col = rect->color; |
331 | break; |
332 | case 16: |
333 | case 32: col = ((u32 *)(info->pseudo_palette))[rect->color]; |
334 | break; |
335 | } |
336 | |
337 | if(ivideo->sisvga_engine == SIS_300_VGA) { |
338 | #ifdef CONFIG_FB_SIS_300 |
339 | CRITBEGIN |
340 | SiS300SetupForSolidFill(ivideo, color: col, rop: myrops[rect->rop]); |
341 | SiS300SubsequentSolidFillRect(ivideo, x: rect->dx, y: rect->dy, w: width, h: height); |
342 | CRITEND |
343 | #endif |
344 | } else { |
345 | #ifdef CONFIG_FB_SIS_315 |
346 | CRITBEGIN |
347 | SiS310SetupForSolidFill(ivideo, color: col, rop: myrops[rect->rop]); |
348 | SiS310SubsequentSolidFillRect(ivideo, x: rect->dx, y: rect->dy, w: width, h: height); |
349 | CRITEND |
350 | #endif |
351 | } |
352 | |
353 | sisfb_syncaccel(ivideo); |
354 | } |
355 | |
356 | void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
357 | { |
358 | struct sis_video_info *ivideo = (struct sis_video_info *)info->par; |
359 | u32 vxres = info->var.xres_virtual; |
360 | u32 vyres = info->var.yres_virtual; |
361 | int width = area->width; |
362 | int height = area->height; |
363 | CRITFLAGS |
364 | |
365 | if(info->state != FBINFO_STATE_RUNNING) |
366 | return; |
367 | |
368 | if((!ivideo->accel) || (!ivideo->engineok)) { |
369 | cfb_copyarea(info, area); |
370 | return; |
371 | } |
372 | |
373 | if(!width || !height || |
374 | area->sx >= vxres || area->sy >= vyres || |
375 | area->dx >= vxres || area->dy >= vyres) |
376 | return; |
377 | |
378 | /* Clipping */ |
379 | if((area->sx + width) > vxres) width = vxres - area->sx; |
380 | if((area->dx + width) > vxres) width = vxres - area->dx; |
381 | if((area->sy + height) > vyres) height = vyres - area->sy; |
382 | if((area->dy + height) > vyres) height = vyres - area->dy; |
383 | |
384 | if(ivideo->sisvga_engine == SIS_300_VGA) { |
385 | #ifdef CONFIG_FB_SIS_300 |
386 | int xdir, ydir; |
387 | |
388 | if(area->sx < area->dx) xdir = 0; |
389 | else xdir = 1; |
390 | if(area->sy < area->dy) ydir = 0; |
391 | else ydir = 1; |
392 | |
393 | CRITBEGIN |
394 | SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, rop: 3, trans_color: -1); |
395 | SiS300SubsequentScreenToScreenCopy(ivideo, src_x: area->sx, src_y: area->sy, |
396 | dst_x: area->dx, dst_y: area->dy, width, height); |
397 | CRITEND |
398 | #endif |
399 | } else { |
400 | #ifdef CONFIG_FB_SIS_315 |
401 | CRITBEGIN |
402 | SiS310SetupForScreenToScreenCopy(ivideo, rop: 3, trans_color: -1); |
403 | SiS310SubsequentScreenToScreenCopy(ivideo, src_x: area->sx, src_y: area->sy, |
404 | dst_x: area->dx, dst_y: area->dy, width, height); |
405 | CRITEND |
406 | #endif |
407 | } |
408 | |
409 | sisfb_syncaccel(ivideo); |
410 | } |
411 | |