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1 | /* |
2 | * drivers/mb862xx/mb862xxfb_accel.c | |
3 | * | |
4 | * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support | |
5 | * | |
6 | * (C) 2007 Alexander Shishkin <virtuoso@slind.org> | |
7 | * (C) 2009 Valentin Sitdikov <valentin.sitdikov@siemens.com> | |
8 | * (C) 2009 Siemens AG | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | */ | |
15 | #include <linux/fb.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/pci.h> | |
20 | #if defined(CONFIG_OF) | |
21 | #include <linux/of_platform.h> | |
22 | #endif | |
23 | #include "mb862xxfb.h" | |
24 | #include "mb862xx_reg.h" | |
25 | #include "mb862xxfb_accel.h" | |
26 | ||
27 | static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info) | |
28 | { | |
29 | struct mb862xxfb_par *par = info->par; | |
30 | static u32 free; | |
31 | ||
32 | u32 total = 0; | |
33 | while (total < count) { | |
34 | if (free) { | |
35 | outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]); | |
36 | total++; | |
37 | free--; | |
38 | } else { | |
39 | free = (u32) inreg(draw, GDC_REG_FIFO_COUNT); | |
40 | } | |
41 | } | |
42 | } | |
43 | ||
44 | static void mb86290fb_copyarea(struct fb_info *info, | |
45 | const struct fb_copyarea *area) | |
46 | { | |
47 | __u32 cmd[6]; | |
48 | ||
49 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
50 | /* Set raster operation */ | |
51 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
52 | cmd[2] = GDC_TYPE_BLTCOPYP << 24; | |
53 | ||
54 | if (area->sx >= area->dx && area->sy >= area->dy) | |
55 | cmd[2] |= GDC_CMD_BLTCOPY_TOP_LEFT << 16; | |
56 | else if (area->sx >= area->dx && area->sy <= area->dy) | |
57 | cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16; | |
58 | else if (area->sx <= area->dx && area->sy >= area->dy) | |
59 | cmd[2] |= GDC_CMD_BLTCOPY_TOP_RIGHT << 16; | |
60 | else | |
61 | cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16; | |
62 | ||
63 | cmd[3] = (area->sy << 16) | area->sx; | |
64 | cmd[4] = (area->dy << 16) | area->dx; | |
65 | cmd[5] = (area->height << 16) | area->width; | |
66 | mb862xxfb_write_fifo(6, cmd, info); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image. | |
71 | * Make sure cmd has enough room! | |
72 | */ | |
73 | static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy, | |
74 | u16 width, u16 height, u32 fgcolor, | |
75 | u32 bgcolor, const struct fb_image *image, | |
76 | struct fb_info *info) | |
77 | { | |
78 | int i; | |
79 | unsigned const char *line; | |
80 | u16 bytes; | |
81 | ||
82 | /* set colors and raster operation regs */ | |
83 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
84 | /* Set raster operation */ | |
85 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
86 | cmd[2] = | |
87 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
88 | cmd[3] = fgcolor; | |
89 | cmd[4] = | |
90 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16); | |
91 | cmd[5] = bgcolor; | |
92 | ||
93 | i = 0; | |
94 | line = image->data; | |
95 | bytes = (image->width + 7) >> 3; | |
96 | ||
97 | /* and the image */ | |
98 | cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
99 | (GDC_CMD_BITMAP << 16) | (2 + (step * height)); | |
100 | cmd[7] = (dy << 16) | dx; | |
101 | cmd[8] = (height << 16) | width; | |
102 | ||
103 | while (i < height) { | |
104 | memcpy(&cmd[9 + i * step], line, step << 2); | |
105 | #ifdef __LITTLE_ENDIAN | |
106 | { | |
107 | int k = 0; | |
108 | for (k = 0; k < step; k++) | |
109 | cmd[9 + i * step + k] = | |
110 | cpu_to_be32(cmd[9 + i * step + k]); | |
111 | } | |
112 | #endif | |
113 | line += bytes; | |
114 | i++; | |
115 | } | |
116 | } | |
117 | ||
118 | /* | |
119 | * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image. | |
120 | * Make sure cmd has enough room! | |
121 | */ | |
122 | static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy, | |
123 | u16 width, u16 height, u32 fgcolor, | |
124 | u32 bgcolor, const struct fb_image *image, | |
125 | struct fb_info *info) | |
126 | { | |
127 | int i, j; | |
128 | unsigned const char *line, *ptr; | |
129 | u16 bytes; | |
130 | ||
131 | cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
132 | (GDC_CMD_BLT_DRAW << 16) | (2 + (height * step)); | |
133 | cmd[1] = (dy << 16) | dx; | |
134 | cmd[2] = (height << 16) | width; | |
135 | ||
136 | i = 0; | |
137 | line = ptr = image->data; | |
138 | bytes = image->width; | |
139 | ||
140 | while (i < height) { | |
141 | ptr = line; | |
142 | for (j = 0; j < step; j++) { | |
143 | cmd[3 + i * step + j] = | |
144 | (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff; | |
145 | ptr++; | |
146 | cmd[3 + i * step + j] |= | |
147 | ((((u32 *) (info-> | |
148 | pseudo_palette))[*ptr]) & 0xffff) << 16; | |
149 | ptr++; | |
150 | } | |
151 | ||
152 | line += bytes; | |
153 | i++; | |
154 | } | |
155 | } | |
156 | ||
157 | /* | |
158 | * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image. | |
159 | * Make sure cmd has enough room! | |
160 | */ | |
161 | static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy, | |
162 | u16 width, u16 height, u32 fgcolor, | |
163 | u32 bgcolor, const struct fb_image *image, | |
164 | struct fb_info *info) | |
165 | { | |
166 | int i; | |
167 | unsigned const char *line; | |
168 | u16 bytes; | |
169 | ||
170 | i = 0; | |
171 | line = image->data; | |
172 | bytes = image->width << 1; | |
173 | ||
174 | cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
175 | (GDC_CMD_BLT_DRAW << 16) | (2 + step * height); | |
176 | cmd[1] = (dy << 16) | dx; | |
177 | cmd[2] = (height << 16) | width; | |
178 | ||
179 | while (i < height) { | |
180 | memcpy(&cmd[3 + i * step], line, step); | |
181 | line += bytes; | |
182 | i++; | |
183 | } | |
184 | } | |
185 | ||
186 | static void mb86290fb_imageblit(struct fb_info *info, | |
187 | const struct fb_image *image) | |
188 | { | |
189 | int mdr; | |
190 | u32 *cmd = NULL; | |
191 | void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32, | |
192 | const struct fb_image *, struct fb_info *) = NULL; | |
193 | u32 cmdlen; | |
194 | u32 fgcolor = 0, bgcolor = 0; | |
195 | u16 step; | |
196 | ||
197 | u16 width = image->width, height = image->height; | |
198 | u16 dx = image->dx, dy = image->dy; | |
199 | int x2, y2, vxres, vyres; | |
200 | ||
201 | mdr = (GDC_ROP_COPY << 9); | |
202 | x2 = image->dx + image->width; | |
203 | y2 = image->dy + image->height; | |
204 | vxres = info->var.xres_virtual; | |
205 | vyres = info->var.yres_virtual; | |
206 | x2 = min(x2, vxres); | |
207 | y2 = min(y2, vyres); | |
208 | width = x2 - dx; | |
209 | height = y2 - dy; | |
210 | ||
211 | switch (image->depth) { | |
212 | case 1: | |
213 | step = (width + 31) >> 5; | |
214 | cmdlen = 9 + height * step; | |
215 | cmdfn = mb86290fb_imageblit1; | |
216 | if (info->fix.visual == FB_VISUAL_TRUECOLOR || | |
217 | info->fix.visual == FB_VISUAL_DIRECTCOLOR) { | |
218 | fgcolor = | |
219 | ((u32 *) (info->pseudo_palette))[image->fg_color]; | |
220 | bgcolor = | |
221 | ((u32 *) (info->pseudo_palette))[image->bg_color]; | |
222 | } else { | |
223 | fgcolor = image->fg_color; | |
224 | bgcolor = image->bg_color; | |
225 | } | |
226 | ||
227 | break; | |
228 | ||
229 | case 8: | |
230 | step = (width + 1) >> 1; | |
231 | cmdlen = 3 + height * step; | |
232 | cmdfn = mb86290fb_imageblit8; | |
233 | break; | |
234 | ||
235 | case 16: | |
236 | step = (width + 1) >> 1; | |
237 | cmdlen = 3 + height * step; | |
238 | cmdfn = mb86290fb_imageblit16; | |
239 | break; | |
240 | ||
241 | default: | |
242 | cfb_imageblit(info, image); | |
243 | return; | |
244 | } | |
245 | ||
246 | cmd = kmalloc(cmdlen * 4, GFP_DMA); | |
247 | if (!cmd) | |
248 | return cfb_imageblit(info, image); | |
249 | cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info); | |
250 | mb862xxfb_write_fifo(cmdlen, cmd, info); | |
251 | kfree(cmd); | |
252 | } | |
253 | ||
254 | static void mb86290fb_fillrect(struct fb_info *info, | |
255 | const struct fb_fillrect *rect) | |
256 | { | |
257 | ||
258 | u32 x2, y2, vxres, vyres, height, width, fg; | |
259 | u32 cmd[7]; | |
260 | ||
261 | vxres = info->var.xres_virtual; | |
262 | vyres = info->var.yres_virtual; | |
263 | ||
264 | if (!rect->width || !rect->height || rect->dx > vxres | |
265 | || rect->dy > vyres) | |
266 | return; | |
267 | ||
268 | /* We could use hardware clipping but on many cards you get around | |
269 | * hardware clipping by writing to framebuffer directly. */ | |
270 | x2 = rect->dx + rect->width; | |
271 | y2 = rect->dy + rect->height; | |
272 | x2 = min(x2, vxres); | |
273 | y2 = min(y2, vyres); | |
274 | width = x2 - rect->dx; | |
275 | height = y2 - rect->dy; | |
276 | if (info->fix.visual == FB_VISUAL_TRUECOLOR || | |
277 | info->fix.visual == FB_VISUAL_DIRECTCOLOR) | |
278 | fg = ((u32 *) (info->pseudo_palette))[rect->color]; | |
279 | else | |
280 | fg = rect->color; | |
281 | ||
282 | switch (rect->rop) { | |
283 | ||
284 | case ROP_XOR: | |
285 | /* Set raster operation */ | |
286 | cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9); | |
287 | break; | |
288 | ||
289 | case ROP_COPY: | |
290 | /* Set raster operation */ | |
291 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
292 | break; | |
293 | ||
294 | } | |
295 | ||
296 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
297 | /* cmd[1] set earlier */ | |
298 | cmd[2] = | |
299 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
300 | cmd[3] = fg; | |
301 | cmd[4] = (GDC_TYPE_DRAWRECTP << 24) | (GDC_CMD_BLT_FILL << 16); | |
302 | cmd[5] = (rect->dy << 16) | (rect->dx); | |
303 | cmd[6] = (height << 16) | width; | |
304 | ||
305 | mb862xxfb_write_fifo(7, cmd, info); | |
306 | } | |
307 | ||
308 | void mb862xxfb_init_accel(struct fb_info *info, int xres) | |
309 | { | |
310 | struct mb862xxfb_par *par = info->par; | |
311 | ||
312 | if (info->var.bits_per_pixel == 32) { | |
313 | info->fbops->fb_fillrect = cfb_fillrect; | |
314 | info->fbops->fb_copyarea = cfb_copyarea; | |
315 | info->fbops->fb_imageblit = cfb_imageblit; | |
316 | } else { | |
317 | outreg(disp, GC_L0EM, 3); | |
318 | info->fbops->fb_fillrect = mb86290fb_fillrect; | |
319 | info->fbops->fb_copyarea = mb86290fb_copyarea; | |
320 | info->fbops->fb_imageblit = mb86290fb_imageblit; | |
321 | } | |
322 | outreg(draw, GDC_REG_DRAW_BASE, 0); | |
323 | outreg(draw, GDC_REG_MODE_MISC, 0x8000); | |
324 | outreg(draw, GDC_REG_X_RESOLUTION, xres); | |
325 | ||
326 | info->flags |= | |
327 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT | | |
328 | FBINFO_HWACCEL_IMAGEBLIT; | |
329 | info->fix.accel = 0xff; /*FIXME: add right define */ | |
330 | } | |
331 | EXPORT_SYMBOL(mb862xxfb_init_accel); |