Commit | Line | Data |
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1da177e4 LT |
1 | |
2 | /* | |
3 | * ATI Mach64 Hardware Acceleration | |
4 | */ | |
5 | ||
1da177e4 LT |
6 | #include <linux/delay.h> |
7 | #include <linux/fb.h> | |
8 | #include <video/mach64.h> | |
9 | #include "atyfb.h" | |
10 | ||
11 | /* | |
12 | * Generic Mach64 routines | |
13 | */ | |
14 | ||
15 | /* this is for DMA GUI engine! work in progress */ | |
16 | typedef struct { | |
17 | u32 frame_buf_offset; | |
18 | u32 system_mem_addr; | |
19 | u32 command; | |
20 | u32 reserved; | |
21 | } BM_DESCRIPTOR_ENTRY; | |
22 | ||
23 | #define LAST_DESCRIPTOR (1 << 31) | |
24 | #define SYSTEM_TO_FRAME_BUFFER 0 | |
25 | ||
26 | static u32 rotation24bpp(u32 dx, u32 direction) | |
27 | { | |
28 | u32 rotation; | |
29 | if (direction & DST_X_LEFT_TO_RIGHT) { | |
30 | rotation = (dx / 4) % 6; | |
31 | } else { | |
32 | rotation = ((dx + 2) / 4) % 6; | |
33 | } | |
34 | ||
35 | return ((rotation << 8) | DST_24_ROTATION_ENABLE); | |
36 | } | |
37 | ||
38 | void aty_reset_engine(const struct atyfb_par *par) | |
39 | { | |
40 | /* reset engine */ | |
41 | aty_st_le32(GEN_TEST_CNTL, | |
42 | aty_ld_le32(GEN_TEST_CNTL, par) & ~GUI_ENGINE_ENABLE, par); | |
43 | /* enable engine */ | |
44 | aty_st_le32(GEN_TEST_CNTL, | |
45 | aty_ld_le32(GEN_TEST_CNTL, par) | GUI_ENGINE_ENABLE, par); | |
46 | /* ensure engine is not locked up by clearing any FIFO or */ | |
47 | /* HOST errors */ | |
48 | aty_st_le32(BUS_CNTL, | |
49 | aty_ld_le32(BUS_CNTL, par) | BUS_HOST_ERR_ACK | BUS_FIFO_ERR_ACK, par); | |
50 | } | |
51 | ||
52 | static void reset_GTC_3D_engine(const struct atyfb_par *par) | |
53 | { | |
54 | aty_st_le32(SCALE_3D_CNTL, 0xc0, par); | |
55 | mdelay(GTC_3D_RESET_DELAY); | |
56 | aty_st_le32(SETUP_CNTL, 0x00, par); | |
57 | mdelay(GTC_3D_RESET_DELAY); | |
58 | aty_st_le32(SCALE_3D_CNTL, 0x00, par); | |
59 | mdelay(GTC_3D_RESET_DELAY); | |
60 | } | |
61 | ||
62 | void aty_init_engine(struct atyfb_par *par, struct fb_info *info) | |
63 | { | |
64 | u32 pitch_value; | |
65 | ||
66 | /* determine modal information from global mode structure */ | |
67 | pitch_value = info->var.xres_virtual; | |
68 | ||
69 | if (info->var.bits_per_pixel == 24) { | |
70 | /* In 24 bpp, the engine is in 8 bpp - this requires that all */ | |
71 | /* horizontal coordinates and widths must be adjusted */ | |
72 | pitch_value *= 3; | |
73 | } | |
74 | ||
75 | /* On GTC (RagePro), we need to reset the 3D engine before */ | |
76 | if (M64_HAS(RESET_3D)) | |
77 | reset_GTC_3D_engine(par); | |
78 | ||
79 | /* Reset engine, enable, and clear any engine errors */ | |
80 | aty_reset_engine(par); | |
81 | /* Ensure that vga page pointers are set to zero - the upper */ | |
82 | /* page pointers are set to 1 to handle overflows in the */ | |
83 | /* lower page */ | |
84 | aty_st_le32(MEM_VGA_WP_SEL, 0x00010000, par); | |
85 | aty_st_le32(MEM_VGA_RP_SEL, 0x00010000, par); | |
86 | ||
87 | /* ---- Setup standard engine context ---- */ | |
88 | ||
89 | /* All GUI registers here are FIFOed - therefore, wait for */ | |
90 | /* the appropriate number of empty FIFO entries */ | |
91 | wait_for_fifo(14, par); | |
92 | ||
93 | /* enable all registers to be loaded for context loads */ | |
94 | aty_st_le32(CONTEXT_MASK, 0xFFFFFFFF, par); | |
95 | ||
96 | /* set destination pitch to modal pitch, set offset to zero */ | |
97 | aty_st_le32(DST_OFF_PITCH, (pitch_value / 8) << 22, par); | |
98 | ||
99 | /* zero these registers (set them to a known state) */ | |
100 | aty_st_le32(DST_Y_X, 0, par); | |
101 | aty_st_le32(DST_HEIGHT, 0, par); | |
102 | aty_st_le32(DST_BRES_ERR, 0, par); | |
103 | aty_st_le32(DST_BRES_INC, 0, par); | |
104 | aty_st_le32(DST_BRES_DEC, 0, par); | |
105 | ||
106 | /* set destination drawing attributes */ | |
107 | aty_st_le32(DST_CNTL, DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM | | |
108 | DST_X_LEFT_TO_RIGHT, par); | |
109 | ||
110 | /* set source pitch to modal pitch, set offset to zero */ | |
111 | aty_st_le32(SRC_OFF_PITCH, (pitch_value / 8) << 22, par); | |
112 | ||
113 | /* set these registers to a known state */ | |
114 | aty_st_le32(SRC_Y_X, 0, par); | |
115 | aty_st_le32(SRC_HEIGHT1_WIDTH1, 1, par); | |
116 | aty_st_le32(SRC_Y_X_START, 0, par); | |
117 | aty_st_le32(SRC_HEIGHT2_WIDTH2, 1, par); | |
118 | ||
119 | /* set source pixel retrieving attributes */ | |
120 | aty_st_le32(SRC_CNTL, SRC_LINE_X_LEFT_TO_RIGHT, par); | |
121 | ||
122 | /* set host attributes */ | |
123 | wait_for_fifo(13, par); | |
124 | aty_st_le32(HOST_CNTL, 0, par); | |
125 | ||
126 | /* set pattern attributes */ | |
127 | aty_st_le32(PAT_REG0, 0, par); | |
128 | aty_st_le32(PAT_REG1, 0, par); | |
129 | aty_st_le32(PAT_CNTL, 0, par); | |
130 | ||
131 | /* set scissors to modal size */ | |
132 | aty_st_le32(SC_LEFT, 0, par); | |
133 | aty_st_le32(SC_TOP, 0, par); | |
134 | aty_st_le32(SC_BOTTOM, par->crtc.vyres - 1, par); | |
135 | aty_st_le32(SC_RIGHT, pitch_value - 1, par); | |
136 | ||
137 | /* set background color to minimum value (usually BLACK) */ | |
138 | aty_st_le32(DP_BKGD_CLR, 0, par); | |
139 | ||
140 | /* set foreground color to maximum value (usually WHITE) */ | |
141 | aty_st_le32(DP_FRGD_CLR, 0xFFFFFFFF, par); | |
142 | ||
143 | /* set write mask to effect all pixel bits */ | |
144 | aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par); | |
145 | ||
146 | /* set foreground mix to overpaint and background mix to */ | |
147 | /* no-effect */ | |
148 | aty_st_le32(DP_MIX, FRGD_MIX_S | BKGD_MIX_D, par); | |
149 | ||
150 | /* set primary source pixel channel to foreground color */ | |
151 | /* register */ | |
152 | aty_st_le32(DP_SRC, FRGD_SRC_FRGD_CLR, par); | |
153 | ||
154 | /* set compare functionality to false (no-effect on */ | |
155 | /* destination) */ | |
156 | wait_for_fifo(3, par); | |
157 | aty_st_le32(CLR_CMP_CLR, 0, par); | |
158 | aty_st_le32(CLR_CMP_MASK, 0xFFFFFFFF, par); | |
159 | aty_st_le32(CLR_CMP_CNTL, 0, par); | |
160 | ||
161 | /* set pixel depth */ | |
162 | wait_for_fifo(2, par); | |
163 | aty_st_le32(DP_PIX_WIDTH, par->crtc.dp_pix_width, par); | |
164 | aty_st_le32(DP_CHAIN_MASK, par->crtc.dp_chain_mask, par); | |
165 | ||
166 | wait_for_fifo(5, par); | |
167 | aty_st_le32(SCALE_3D_CNTL, 0, par); | |
168 | aty_st_le32(Z_CNTL, 0, par); | |
169 | aty_st_le32(CRTC_INT_CNTL, aty_ld_le32(CRTC_INT_CNTL, par) & ~0x20, | |
170 | par); | |
171 | aty_st_le32(GUI_TRAJ_CNTL, 0x100023, par); | |
172 | ||
173 | /* insure engine is idle before leaving */ | |
174 | wait_for_idle(par); | |
175 | } | |
176 | ||
177 | /* | |
178 | * Accelerated functions | |
179 | */ | |
180 | ||
181 | static inline void draw_rect(s16 x, s16 y, u16 width, u16 height, | |
182 | struct atyfb_par *par) | |
183 | { | |
184 | /* perform rectangle fill */ | |
185 | wait_for_fifo(2, par); | |
186 | aty_st_le32(DST_Y_X, (x << 16) | y, par); | |
187 | aty_st_le32(DST_HEIGHT_WIDTH, (width << 16) | height, par); | |
188 | par->blitter_may_be_busy = 1; | |
189 | } | |
190 | ||
191 | void atyfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) | |
192 | { | |
193 | struct atyfb_par *par = (struct atyfb_par *) info->par; | |
194 | u32 dy = area->dy, sy = area->sy, direction = DST_LAST_PEL; | |
195 | u32 sx = area->sx, dx = area->dx, width = area->width, rotation = 0; | |
196 | ||
197 | if (par->asleep) | |
198 | return; | |
199 | if (!area->width || !area->height) | |
200 | return; | |
201 | if (!par->accel_flags) { | |
1da177e4 LT |
202 | cfb_copyarea(info, area); |
203 | return; | |
204 | } | |
205 | ||
206 | if (info->var.bits_per_pixel == 24) { | |
207 | /* In 24 bpp, the engine is in 8 bpp - this requires that all */ | |
208 | /* horizontal coordinates and widths must be adjusted */ | |
209 | sx *= 3; | |
210 | dx *= 3; | |
211 | width *= 3; | |
212 | } | |
213 | ||
214 | if (area->sy < area->dy) { | |
215 | dy += area->height - 1; | |
216 | sy += area->height - 1; | |
217 | } else | |
218 | direction |= DST_Y_TOP_TO_BOTTOM; | |
219 | ||
220 | if (sx < dx) { | |
221 | dx += width - 1; | |
222 | sx += width - 1; | |
223 | } else | |
224 | direction |= DST_X_LEFT_TO_RIGHT; | |
225 | ||
226 | if (info->var.bits_per_pixel == 24) { | |
227 | rotation = rotation24bpp(dx, direction); | |
228 | } | |
229 | ||
230 | wait_for_fifo(4, par); | |
231 | aty_st_le32(DP_SRC, FRGD_SRC_BLIT, par); | |
232 | aty_st_le32(SRC_Y_X, (sx << 16) | sy, par); | |
233 | aty_st_le32(SRC_HEIGHT1_WIDTH1, (width << 16) | area->height, par); | |
234 | aty_st_le32(DST_CNTL, direction | rotation, par); | |
235 | draw_rect(dx, dy, width, area->height, par); | |
236 | } | |
237 | ||
238 | void atyfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) | |
239 | { | |
240 | struct atyfb_par *par = (struct atyfb_par *) info->par; | |
241 | u32 color = rect->color, dx = rect->dx, width = rect->width, rotation = 0; | |
242 | ||
243 | if (par->asleep) | |
244 | return; | |
245 | if (!rect->width || !rect->height) | |
246 | return; | |
247 | if (!par->accel_flags) { | |
1da177e4 LT |
248 | cfb_fillrect(info, rect); |
249 | return; | |
250 | } | |
251 | ||
252 | color |= (rect->color << 8); | |
253 | color |= (rect->color << 16); | |
254 | ||
255 | if (info->var.bits_per_pixel == 24) { | |
256 | /* In 24 bpp, the engine is in 8 bpp - this requires that all */ | |
257 | /* horizontal coordinates and widths must be adjusted */ | |
258 | dx *= 3; | |
259 | width *= 3; | |
260 | rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT); | |
261 | } | |
262 | ||
263 | wait_for_fifo(3, par); | |
264 | aty_st_le32(DP_FRGD_CLR, color, par); | |
265 | aty_st_le32(DP_SRC, | |
266 | BKGD_SRC_BKGD_CLR | FRGD_SRC_FRGD_CLR | MONO_SRC_ONE, | |
267 | par); | |
268 | aty_st_le32(DST_CNTL, | |
269 | DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM | | |
270 | DST_X_LEFT_TO_RIGHT | rotation, par); | |
271 | draw_rect(dx, rect->dy, width, rect->height, par); | |
272 | } | |
273 | ||
274 | void atyfb_imageblit(struct fb_info *info, const struct fb_image *image) | |
275 | { | |
276 | struct atyfb_par *par = (struct atyfb_par *) info->par; | |
277 | u32 src_bytes, dx = image->dx, dy = image->dy, width = image->width; | |
278 | u32 pix_width_save, pix_width, host_cntl, rotation = 0, src, mix; | |
279 | ||
280 | if (par->asleep) | |
281 | return; | |
282 | if (!image->width || !image->height) | |
283 | return; | |
284 | if (!par->accel_flags || | |
285 | (image->depth != 1 && info->var.bits_per_pixel != image->depth)) { | |
1da177e4 LT |
286 | cfb_imageblit(info, image); |
287 | return; | |
288 | } | |
289 | ||
1da177e4 LT |
290 | pix_width = pix_width_save = aty_ld_le32(DP_PIX_WIDTH, par); |
291 | host_cntl = aty_ld_le32(HOST_CNTL, par) | HOST_BYTE_ALIGN; | |
292 | ||
293 | switch (image->depth) { | |
294 | case 1: | |
295 | pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK); | |
296 | pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_1BPP); | |
297 | break; | |
298 | case 4: | |
299 | pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK); | |
300 | pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_4BPP); | |
301 | break; | |
302 | case 8: | |
303 | pix_width &= ~HOST_MASK; | |
304 | pix_width |= HOST_8BPP; | |
305 | break; | |
306 | case 15: | |
307 | pix_width &= ~HOST_MASK; | |
308 | pix_width |= HOST_15BPP; | |
309 | break; | |
310 | case 16: | |
311 | pix_width &= ~HOST_MASK; | |
312 | pix_width |= HOST_16BPP; | |
313 | break; | |
314 | case 24: | |
315 | pix_width &= ~HOST_MASK; | |
316 | pix_width |= HOST_24BPP; | |
317 | break; | |
318 | case 32: | |
319 | pix_width &= ~HOST_MASK; | |
320 | pix_width |= HOST_32BPP; | |
321 | break; | |
322 | } | |
323 | ||
324 | if (info->var.bits_per_pixel == 24) { | |
325 | /* In 24 bpp, the engine is in 8 bpp - this requires that all */ | |
326 | /* horizontal coordinates and widths must be adjusted */ | |
327 | dx *= 3; | |
328 | width *= 3; | |
329 | ||
330 | rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT); | |
331 | ||
332 | pix_width &= ~DST_MASK; | |
333 | pix_width |= DST_8BPP; | |
334 | ||
335 | /* | |
336 | * since Rage 3D IIc we have DP_HOST_TRIPLE_EN bit | |
337 | * this hwaccelerated triple has an issue with not aligned data | |
338 | */ | |
339 | if (M64_HAS(HW_TRIPLE) && image->width % 8 == 0) | |
340 | pix_width |= DP_HOST_TRIPLE_EN; | |
341 | } | |
342 | ||
343 | if (image->depth == 1) { | |
344 | u32 fg, bg; | |
345 | if (info->fix.visual == FB_VISUAL_TRUECOLOR || | |
346 | info->fix.visual == FB_VISUAL_DIRECTCOLOR) { | |
347 | fg = ((u32*)(info->pseudo_palette))[image->fg_color]; | |
348 | bg = ((u32*)(info->pseudo_palette))[image->bg_color]; | |
349 | } else { | |
350 | fg = image->fg_color; | |
351 | bg = image->bg_color; | |
352 | } | |
353 | ||
354 | wait_for_fifo(2, par); | |
355 | aty_st_le32(DP_BKGD_CLR, bg, par); | |
356 | aty_st_le32(DP_FRGD_CLR, fg, par); | |
357 | src = MONO_SRC_HOST | FRGD_SRC_FRGD_CLR | BKGD_SRC_BKGD_CLR; | |
358 | mix = FRGD_MIX_S | BKGD_MIX_S; | |
359 | } else { | |
360 | src = MONO_SRC_ONE | FRGD_SRC_HOST; | |
361 | mix = FRGD_MIX_D_XOR_S | BKGD_MIX_D; | |
362 | } | |
363 | ||
364 | wait_for_fifo(6, par); | |
365 | aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par); | |
366 | aty_st_le32(DP_PIX_WIDTH, pix_width, par); | |
367 | aty_st_le32(DP_MIX, mix, par); | |
368 | aty_st_le32(DP_SRC, src, par); | |
369 | aty_st_le32(HOST_CNTL, host_cntl, par); | |
370 | aty_st_le32(DST_CNTL, DST_Y_TOP_TO_BOTTOM | DST_X_LEFT_TO_RIGHT | rotation, par); | |
371 | ||
372 | draw_rect(dx, dy, width, image->height, par); | |
373 | src_bytes = (((image->width * image->depth) + 7) / 8) * image->height; | |
374 | ||
375 | /* manual triple each pixel */ | |
376 | if (info->var.bits_per_pixel == 24 && !(pix_width & DP_HOST_TRIPLE_EN)) { | |
377 | int inbit, outbit, mult24, byte_id_in_dword, width; | |
378 | u8 *pbitmapin = (u8*)image->data, *pbitmapout; | |
379 | u32 hostdword; | |
380 | ||
381 | for (width = image->width, inbit = 7, mult24 = 0; src_bytes; ) { | |
382 | for (hostdword = 0, pbitmapout = (u8*)&hostdword, byte_id_in_dword = 0; | |
383 | byte_id_in_dword < 4 && src_bytes; | |
384 | byte_id_in_dword++, pbitmapout++) { | |
385 | for (outbit = 7; outbit >= 0; outbit--) { | |
386 | *pbitmapout |= (((*pbitmapin >> inbit) & 1) << outbit); | |
387 | mult24++; | |
388 | /* next bit */ | |
389 | if (mult24 == 3) { | |
390 | mult24 = 0; | |
391 | inbit--; | |
392 | width--; | |
393 | } | |
394 | ||
395 | /* next byte */ | |
396 | if (inbit < 0 || width == 0) { | |
397 | src_bytes--; | |
398 | pbitmapin++; | |
399 | inbit = 7; | |
400 | ||
401 | if (width == 0) { | |
402 | width = image->width; | |
403 | outbit = 0; | |
404 | } | |
405 | } | |
406 | } | |
407 | } | |
408 | wait_for_fifo(1, par); | |
409 | aty_st_le32(HOST_DATA0, hostdword, par); | |
410 | } | |
411 | } else { | |
412 | u32 *pbitmap, dwords = (src_bytes + 3) / 4; | |
413 | for (pbitmap = (u32*)(image->data); dwords; dwords--, pbitmap++) { | |
414 | wait_for_fifo(1, par); | |
415 | aty_st_le32(HOST_DATA0, le32_to_cpup(pbitmap), par); | |
416 | } | |
417 | } | |
418 | ||
1da177e4 LT |
419 | /* restore pix_width */ |
420 | wait_for_fifo(1, par); | |
421 | aty_st_le32(DP_PIX_WIDTH, pix_width_save, par); | |
422 | } |