3 * ATI Mach64 Hardware Acceleration
6 #include <linux/sched.h>
7 #include <linux/delay.h>
9 #include <video/mach64.h>
13 * Generic Mach64 routines
16 /* this is for DMA GUI engine! work in progress */
22 } BM_DESCRIPTOR_ENTRY;
24 #define LAST_DESCRIPTOR (1 << 31)
25 #define SYSTEM_TO_FRAME_BUFFER 0
27 static u32 rotation24bpp(u32 dx, u32 direction)
30 if (direction & DST_X_LEFT_TO_RIGHT) {
31 rotation = (dx / 4) % 6;
33 rotation = ((dx + 2) / 4) % 6;
36 return ((rotation << 8) | DST_24_ROTATION_ENABLE);
39 void aty_reset_engine(const struct atyfb_par *par)
42 aty_st_le32(GEN_TEST_CNTL,
43 aty_ld_le32(GEN_TEST_CNTL, par) & ~GUI_ENGINE_ENABLE, par);
45 aty_st_le32(GEN_TEST_CNTL,
46 aty_ld_le32(GEN_TEST_CNTL, par) | GUI_ENGINE_ENABLE, par);
47 /* ensure engine is not locked up by clearing any FIFO or */
50 aty_ld_le32(BUS_CNTL, par) | BUS_HOST_ERR_ACK | BUS_FIFO_ERR_ACK, par);
53 static void reset_GTC_3D_engine(const struct atyfb_par *par)
55 aty_st_le32(SCALE_3D_CNTL, 0xc0, par);
56 mdelay(GTC_3D_RESET_DELAY);
57 aty_st_le32(SETUP_CNTL, 0x00, par);
58 mdelay(GTC_3D_RESET_DELAY);
59 aty_st_le32(SCALE_3D_CNTL, 0x00, par);
60 mdelay(GTC_3D_RESET_DELAY);
63 void aty_init_engine(struct atyfb_par *par, struct fb_info *info)
67 /* determine modal information from global mode structure */
68 pitch_value = info->var.xres_virtual;
70 if (info->var.bits_per_pixel == 24) {
71 /* In 24 bpp, the engine is in 8 bpp - this requires that all */
72 /* horizontal coordinates and widths must be adjusted */
76 /* On GTC (RagePro), we need to reset the 3D engine before */
77 if (M64_HAS(RESET_3D))
78 reset_GTC_3D_engine(par);
80 /* Reset engine, enable, and clear any engine errors */
81 aty_reset_engine(par);
82 /* Ensure that vga page pointers are set to zero - the upper */
83 /* page pointers are set to 1 to handle overflows in the */
85 aty_st_le32(MEM_VGA_WP_SEL, 0x00010000, par);
86 aty_st_le32(MEM_VGA_RP_SEL, 0x00010000, par);
88 /* ---- Setup standard engine context ---- */
90 /* All GUI registers here are FIFOed - therefore, wait for */
91 /* the appropriate number of empty FIFO entries */
92 wait_for_fifo(14, par);
94 /* enable all registers to be loaded for context loads */
95 aty_st_le32(CONTEXT_MASK, 0xFFFFFFFF, par);
97 /* set destination pitch to modal pitch, set offset to zero */
98 aty_st_le32(DST_OFF_PITCH, (pitch_value / 8) << 22, par);
100 /* zero these registers (set them to a known state) */
101 aty_st_le32(DST_Y_X, 0, par);
102 aty_st_le32(DST_HEIGHT, 0, par);
103 aty_st_le32(DST_BRES_ERR, 0, par);
104 aty_st_le32(DST_BRES_INC, 0, par);
105 aty_st_le32(DST_BRES_DEC, 0, par);
107 /* set destination drawing attributes */
108 aty_st_le32(DST_CNTL, DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
109 DST_X_LEFT_TO_RIGHT, par);
111 /* set source pitch to modal pitch, set offset to zero */
112 aty_st_le32(SRC_OFF_PITCH, (pitch_value / 8) << 22, par);
114 /* set these registers to a known state */
115 aty_st_le32(SRC_Y_X, 0, par);
116 aty_st_le32(SRC_HEIGHT1_WIDTH1, 1, par);
117 aty_st_le32(SRC_Y_X_START, 0, par);
118 aty_st_le32(SRC_HEIGHT2_WIDTH2, 1, par);
120 /* set source pixel retrieving attributes */
121 aty_st_le32(SRC_CNTL, SRC_LINE_X_LEFT_TO_RIGHT, par);
123 /* set host attributes */
124 wait_for_fifo(13, par);
125 aty_st_le32(HOST_CNTL, 0, par);
127 /* set pattern attributes */
128 aty_st_le32(PAT_REG0, 0, par);
129 aty_st_le32(PAT_REG1, 0, par);
130 aty_st_le32(PAT_CNTL, 0, par);
132 /* set scissors to modal size */
133 aty_st_le32(SC_LEFT, 0, par);
134 aty_st_le32(SC_TOP, 0, par);
135 aty_st_le32(SC_BOTTOM, par->crtc.vyres - 1, par);
136 aty_st_le32(SC_RIGHT, pitch_value - 1, par);
138 /* set background color to minimum value (usually BLACK) */
139 aty_st_le32(DP_BKGD_CLR, 0, par);
141 /* set foreground color to maximum value (usually WHITE) */
142 aty_st_le32(DP_FRGD_CLR, 0xFFFFFFFF, par);
144 /* set write mask to effect all pixel bits */
145 aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
147 /* set foreground mix to overpaint and background mix to */
149 aty_st_le32(DP_MIX, FRGD_MIX_S | BKGD_MIX_D, par);
151 /* set primary source pixel channel to foreground color */
153 aty_st_le32(DP_SRC, FRGD_SRC_FRGD_CLR, par);
155 /* set compare functionality to false (no-effect on */
157 wait_for_fifo(3, par);
158 aty_st_le32(CLR_CMP_CLR, 0, par);
159 aty_st_le32(CLR_CMP_MASK, 0xFFFFFFFF, par);
160 aty_st_le32(CLR_CMP_CNTL, 0, par);
162 /* set pixel depth */
163 wait_for_fifo(2, par);
164 aty_st_le32(DP_PIX_WIDTH, par->crtc.dp_pix_width, par);
165 aty_st_le32(DP_CHAIN_MASK, par->crtc.dp_chain_mask, par);
167 wait_for_fifo(5, par);
168 aty_st_le32(SCALE_3D_CNTL, 0, par);
169 aty_st_le32(Z_CNTL, 0, par);
170 aty_st_le32(CRTC_INT_CNTL, aty_ld_le32(CRTC_INT_CNTL, par) & ~0x20,
172 aty_st_le32(GUI_TRAJ_CNTL, 0x100023, par);
174 /* insure engine is idle before leaving */
179 * Accelerated functions
182 static inline void draw_rect(s16 x, s16 y, u16 width, u16 height,
183 struct atyfb_par *par)
185 /* perform rectangle fill */
186 wait_for_fifo(2, par);
187 aty_st_le32(DST_Y_X, (x << 16) | y, par);
188 aty_st_le32(DST_HEIGHT_WIDTH, (width << 16) | height, par);
189 par->blitter_may_be_busy = 1;
192 void atyfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
194 struct atyfb_par *par = (struct atyfb_par *) info->par;
195 u32 dy = area->dy, sy = area->sy, direction = DST_LAST_PEL;
196 u32 sx = area->sx, dx = area->dx, width = area->width, rotation = 0;
200 if (!area->width || !area->height)
202 if (!par->accel_flags) {
203 if (par->blitter_may_be_busy)
205 cfb_copyarea(info, area);
209 if (info->var.bits_per_pixel == 24) {
210 /* In 24 bpp, the engine is in 8 bpp - this requires that all */
211 /* horizontal coordinates and widths must be adjusted */
217 if (area->sy < area->dy) {
218 dy += area->height - 1;
219 sy += area->height - 1;
221 direction |= DST_Y_TOP_TO_BOTTOM;
227 direction |= DST_X_LEFT_TO_RIGHT;
229 if (info->var.bits_per_pixel == 24) {
230 rotation = rotation24bpp(dx, direction);
233 wait_for_fifo(4, par);
234 aty_st_le32(DP_SRC, FRGD_SRC_BLIT, par);
235 aty_st_le32(SRC_Y_X, (sx << 16) | sy, par);
236 aty_st_le32(SRC_HEIGHT1_WIDTH1, (width << 16) | area->height, par);
237 aty_st_le32(DST_CNTL, direction | rotation, par);
238 draw_rect(dx, dy, width, area->height, par);
241 void atyfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
243 struct atyfb_par *par = (struct atyfb_par *) info->par;
244 u32 color = rect->color, dx = rect->dx, width = rect->width, rotation = 0;
248 if (!rect->width || !rect->height)
250 if (!par->accel_flags) {
251 if (par->blitter_may_be_busy)
253 cfb_fillrect(info, rect);
257 color |= (rect->color << 8);
258 color |= (rect->color << 16);
260 if (info->var.bits_per_pixel == 24) {
261 /* In 24 bpp, the engine is in 8 bpp - this requires that all */
262 /* horizontal coordinates and widths must be adjusted */
265 rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
268 wait_for_fifo(3, par);
269 aty_st_le32(DP_FRGD_CLR, color, par);
271 BKGD_SRC_BKGD_CLR | FRGD_SRC_FRGD_CLR | MONO_SRC_ONE,
273 aty_st_le32(DST_CNTL,
274 DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
275 DST_X_LEFT_TO_RIGHT | rotation, par);
276 draw_rect(dx, rect->dy, width, rect->height, par);
279 void atyfb_imageblit(struct fb_info *info, const struct fb_image *image)
281 struct atyfb_par *par = (struct atyfb_par *) info->par;
282 u32 src_bytes, dx = image->dx, dy = image->dy, width = image->width;
283 u32 pix_width_save, pix_width, host_cntl, rotation = 0, src, mix;
287 if (!image->width || !image->height)
289 if (!par->accel_flags ||
290 (image->depth != 1 && info->var.bits_per_pixel != image->depth)) {
291 if (par->blitter_may_be_busy)
294 cfb_imageblit(info, image);
299 pix_width = pix_width_save = aty_ld_le32(DP_PIX_WIDTH, par);
300 host_cntl = aty_ld_le32(HOST_CNTL, par) | HOST_BYTE_ALIGN;
302 switch (image->depth) {
304 pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
305 pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_1BPP);
308 pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
309 pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_4BPP);
312 pix_width &= ~HOST_MASK;
313 pix_width |= HOST_8BPP;
316 pix_width &= ~HOST_MASK;
317 pix_width |= HOST_15BPP;
320 pix_width &= ~HOST_MASK;
321 pix_width |= HOST_16BPP;
324 pix_width &= ~HOST_MASK;
325 pix_width |= HOST_24BPP;
328 pix_width &= ~HOST_MASK;
329 pix_width |= HOST_32BPP;
333 if (info->var.bits_per_pixel == 24) {
334 /* In 24 bpp, the engine is in 8 bpp - this requires that all */
335 /* horizontal coordinates and widths must be adjusted */
339 rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
341 pix_width &= ~DST_MASK;
342 pix_width |= DST_8BPP;
345 * since Rage 3D IIc we have DP_HOST_TRIPLE_EN bit
346 * this hwaccelerated triple has an issue with not aligned data
348 if (M64_HAS(HW_TRIPLE) && image->width % 8 == 0)
349 pix_width |= DP_HOST_TRIPLE_EN;
352 if (image->depth == 1) {
354 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
355 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
356 fg = ((u32*)(info->pseudo_palette))[image->fg_color];
357 bg = ((u32*)(info->pseudo_palette))[image->bg_color];
359 fg = image->fg_color;
360 bg = image->bg_color;
363 wait_for_fifo(2, par);
364 aty_st_le32(DP_BKGD_CLR, bg, par);
365 aty_st_le32(DP_FRGD_CLR, fg, par);
366 src = MONO_SRC_HOST | FRGD_SRC_FRGD_CLR | BKGD_SRC_BKGD_CLR;
367 mix = FRGD_MIX_S | BKGD_MIX_S;
369 src = MONO_SRC_ONE | FRGD_SRC_HOST;
370 mix = FRGD_MIX_D_XOR_S | BKGD_MIX_D;
373 wait_for_fifo(6, par);
374 aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
375 aty_st_le32(DP_PIX_WIDTH, pix_width, par);
376 aty_st_le32(DP_MIX, mix, par);
377 aty_st_le32(DP_SRC, src, par);
378 aty_st_le32(HOST_CNTL, host_cntl, par);
379 aty_st_le32(DST_CNTL, DST_Y_TOP_TO_BOTTOM | DST_X_LEFT_TO_RIGHT | rotation, par);
381 draw_rect(dx, dy, width, image->height, par);
382 src_bytes = (((image->width * image->depth) + 7) / 8) * image->height;
384 /* manual triple each pixel */
385 if (info->var.bits_per_pixel == 24 && !(pix_width & DP_HOST_TRIPLE_EN)) {
386 int inbit, outbit, mult24, byte_id_in_dword, width;
387 u8 *pbitmapin = (u8*)image->data, *pbitmapout;
390 for (width = image->width, inbit = 7, mult24 = 0; src_bytes; ) {
391 for (hostdword = 0, pbitmapout = (u8*)&hostdword, byte_id_in_dword = 0;
392 byte_id_in_dword < 4 && src_bytes;
393 byte_id_in_dword++, pbitmapout++) {
394 for (outbit = 7; outbit >= 0; outbit--) {
395 *pbitmapout |= (((*pbitmapin >> inbit) & 1) << outbit);
405 if (inbit < 0 || width == 0) {
411 width = image->width;
417 wait_for_fifo(1, par);
418 aty_st_le32(HOST_DATA0, hostdword, par);
421 u32 *pbitmap, dwords = (src_bytes + 3) / 4;
422 for (pbitmap = (u32*)(image->data); dwords; dwords--, pbitmap++) {
423 wait_for_fifo(1, par);
424 aty_st_le32(HOST_DATA0, le32_to_cpup(pbitmap), par);
430 /* restore pix_width */
431 wait_for_fifo(1, par);
432 aty_st_le32(DP_PIX_WIDTH, pix_width_save, par);