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2ec509b9 VS |
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> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
2ec509b9 VS |
21 | #if defined(CONFIG_OF) |
22 | #include <linux/of_platform.h> | |
23 | #endif | |
24 | #include "mb862xxfb.h" | |
25 | #include "mb862xx_reg.h" | |
26 | #include "mb862xxfb_accel.h" | |
27 | ||
28 | static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info) | |
29 | { | |
30 | struct mb862xxfb_par *par = info->par; | |
31 | static u32 free; | |
32 | ||
33 | u32 total = 0; | |
34 | while (total < count) { | |
35 | if (free) { | |
36 | outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]); | |
37 | total++; | |
38 | free--; | |
39 | } else { | |
40 | free = (u32) inreg(draw, GDC_REG_FIFO_COUNT); | |
41 | } | |
42 | } | |
43 | } | |
44 | ||
45 | static void mb86290fb_copyarea(struct fb_info *info, | |
46 | const struct fb_copyarea *area) | |
47 | { | |
48 | __u32 cmd[6]; | |
49 | ||
50 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
51 | /* Set raster operation */ | |
52 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
53 | cmd[2] = GDC_TYPE_BLTCOPYP << 24; | |
54 | ||
55 | if (area->sx >= area->dx && area->sy >= area->dy) | |
56 | cmd[2] |= GDC_CMD_BLTCOPY_TOP_LEFT << 16; | |
57 | else if (area->sx >= area->dx && area->sy <= area->dy) | |
58 | cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16; | |
59 | else if (area->sx <= area->dx && area->sy >= area->dy) | |
60 | cmd[2] |= GDC_CMD_BLTCOPY_TOP_RIGHT << 16; | |
61 | else | |
62 | cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16; | |
63 | ||
64 | cmd[3] = (area->sy << 16) | area->sx; | |
65 | cmd[4] = (area->dy << 16) | area->dx; | |
66 | cmd[5] = (area->height << 16) | area->width; | |
67 | mb862xxfb_write_fifo(6, cmd, info); | |
68 | } | |
69 | ||
70 | /* | |
71 | * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image. | |
72 | * Make sure cmd has enough room! | |
73 | */ | |
74 | static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy, | |
75 | u16 width, u16 height, u32 fgcolor, | |
76 | u32 bgcolor, const struct fb_image *image, | |
77 | struct fb_info *info) | |
78 | { | |
79 | int i; | |
80 | unsigned const char *line; | |
81 | u16 bytes; | |
82 | ||
83 | /* set colors and raster operation regs */ | |
84 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
85 | /* Set raster operation */ | |
86 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
87 | cmd[2] = | |
88 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
89 | cmd[3] = fgcolor; | |
90 | cmd[4] = | |
91 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16); | |
92 | cmd[5] = bgcolor; | |
93 | ||
94 | i = 0; | |
95 | line = image->data; | |
96 | bytes = (image->width + 7) >> 3; | |
97 | ||
98 | /* and the image */ | |
99 | cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
100 | (GDC_CMD_BITMAP << 16) | (2 + (step * height)); | |
101 | cmd[7] = (dy << 16) | dx; | |
102 | cmd[8] = (height << 16) | width; | |
103 | ||
104 | while (i < height) { | |
105 | memcpy(&cmd[9 + i * step], line, step << 2); | |
106 | #ifdef __LITTLE_ENDIAN | |
107 | { | |
108 | int k = 0; | |
109 | for (k = 0; k < step; k++) | |
110 | cmd[9 + i * step + k] = | |
111 | cpu_to_be32(cmd[9 + i * step + k]); | |
112 | } | |
113 | #endif | |
114 | line += bytes; | |
115 | i++; | |
116 | } | |
117 | } | |
118 | ||
119 | /* | |
120 | * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image. | |
121 | * Make sure cmd has enough room! | |
122 | */ | |
123 | static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy, | |
124 | u16 width, u16 height, u32 fgcolor, | |
125 | u32 bgcolor, const struct fb_image *image, | |
126 | struct fb_info *info) | |
127 | { | |
128 | int i, j; | |
129 | unsigned const char *line, *ptr; | |
130 | u16 bytes; | |
131 | ||
132 | cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
133 | (GDC_CMD_BLT_DRAW << 16) | (2 + (height * step)); | |
134 | cmd[1] = (dy << 16) | dx; | |
135 | cmd[2] = (height << 16) | width; | |
136 | ||
137 | i = 0; | |
138 | line = ptr = image->data; | |
139 | bytes = image->width; | |
140 | ||
141 | while (i < height) { | |
142 | ptr = line; | |
143 | for (j = 0; j < step; j++) { | |
144 | cmd[3 + i * step + j] = | |
145 | (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff; | |
146 | ptr++; | |
147 | cmd[3 + i * step + j] |= | |
148 | ((((u32 *) (info-> | |
149 | pseudo_palette))[*ptr]) & 0xffff) << 16; | |
150 | ptr++; | |
151 | } | |
152 | ||
153 | line += bytes; | |
154 | i++; | |
155 | } | |
156 | } | |
157 | ||
158 | /* | |
159 | * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image. | |
160 | * Make sure cmd has enough room! | |
161 | */ | |
162 | static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy, | |
163 | u16 width, u16 height, u32 fgcolor, | |
164 | u32 bgcolor, const struct fb_image *image, | |
165 | struct fb_info *info) | |
166 | { | |
167 | int i; | |
168 | unsigned const char *line; | |
169 | u16 bytes; | |
170 | ||
171 | i = 0; | |
172 | line = image->data; | |
173 | bytes = image->width << 1; | |
174 | ||
175 | cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) | | |
176 | (GDC_CMD_BLT_DRAW << 16) | (2 + step * height); | |
177 | cmd[1] = (dy << 16) | dx; | |
178 | cmd[2] = (height << 16) | width; | |
179 | ||
180 | while (i < height) { | |
181 | memcpy(&cmd[3 + i * step], line, step); | |
182 | line += bytes; | |
183 | i++; | |
184 | } | |
185 | } | |
186 | ||
187 | static void mb86290fb_imageblit(struct fb_info *info, | |
188 | const struct fb_image *image) | |
189 | { | |
190 | int mdr; | |
191 | u32 *cmd = NULL; | |
192 | void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32, | |
193 | const struct fb_image *, struct fb_info *) = NULL; | |
194 | u32 cmdlen; | |
195 | u32 fgcolor = 0, bgcolor = 0; | |
196 | u16 step; | |
197 | ||
198 | u16 width = image->width, height = image->height; | |
199 | u16 dx = image->dx, dy = image->dy; | |
200 | int x2, y2, vxres, vyres; | |
201 | ||
202 | mdr = (GDC_ROP_COPY << 9); | |
203 | x2 = image->dx + image->width; | |
204 | y2 = image->dy + image->height; | |
205 | vxres = info->var.xres_virtual; | |
206 | vyres = info->var.yres_virtual; | |
207 | x2 = min(x2, vxres); | |
208 | y2 = min(y2, vyres); | |
209 | width = x2 - dx; | |
210 | height = y2 - dy; | |
211 | ||
212 | switch (image->depth) { | |
213 | case 1: | |
214 | step = (width + 31) >> 5; | |
215 | cmdlen = 9 + height * step; | |
216 | cmdfn = mb86290fb_imageblit1; | |
217 | if (info->fix.visual == FB_VISUAL_TRUECOLOR || | |
218 | info->fix.visual == FB_VISUAL_DIRECTCOLOR) { | |
219 | fgcolor = | |
220 | ((u32 *) (info->pseudo_palette))[image->fg_color]; | |
221 | bgcolor = | |
222 | ((u32 *) (info->pseudo_palette))[image->bg_color]; | |
223 | } else { | |
224 | fgcolor = image->fg_color; | |
225 | bgcolor = image->bg_color; | |
226 | } | |
227 | ||
228 | break; | |
229 | ||
230 | case 8: | |
231 | step = (width + 1) >> 1; | |
232 | cmdlen = 3 + height * step; | |
233 | cmdfn = mb86290fb_imageblit8; | |
234 | break; | |
235 | ||
236 | case 16: | |
237 | step = (width + 1) >> 1; | |
238 | cmdlen = 3 + height * step; | |
239 | cmdfn = mb86290fb_imageblit16; | |
240 | break; | |
241 | ||
242 | default: | |
243 | cfb_imageblit(info, image); | |
244 | return; | |
245 | } | |
246 | ||
247 | cmd = kmalloc(cmdlen * 4, GFP_DMA); | |
248 | if (!cmd) | |
249 | return cfb_imageblit(info, image); | |
250 | cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info); | |
251 | mb862xxfb_write_fifo(cmdlen, cmd, info); | |
252 | kfree(cmd); | |
253 | } | |
254 | ||
255 | static void mb86290fb_fillrect(struct fb_info *info, | |
256 | const struct fb_fillrect *rect) | |
257 | { | |
258 | ||
259 | u32 x2, y2, vxres, vyres, height, width, fg; | |
260 | u32 cmd[7]; | |
261 | ||
262 | vxres = info->var.xres_virtual; | |
263 | vyres = info->var.yres_virtual; | |
264 | ||
265 | if (!rect->width || !rect->height || rect->dx > vxres | |
266 | || rect->dy > vyres) | |
267 | return; | |
268 | ||
269 | /* We could use hardware clipping but on many cards you get around | |
270 | * hardware clipping by writing to framebuffer directly. */ | |
271 | x2 = rect->dx + rect->width; | |
272 | y2 = rect->dy + rect->height; | |
273 | x2 = min(x2, vxres); | |
274 | y2 = min(y2, vyres); | |
275 | width = x2 - rect->dx; | |
276 | height = y2 - rect->dy; | |
277 | if (info->fix.visual == FB_VISUAL_TRUECOLOR || | |
278 | info->fix.visual == FB_VISUAL_DIRECTCOLOR) | |
279 | fg = ((u32 *) (info->pseudo_palette))[rect->color]; | |
280 | else | |
281 | fg = rect->color; | |
282 | ||
283 | switch (rect->rop) { | |
284 | ||
285 | case ROP_XOR: | |
286 | /* Set raster operation */ | |
287 | cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9); | |
288 | break; | |
289 | ||
290 | case ROP_COPY: | |
291 | /* Set raster operation */ | |
292 | cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9); | |
293 | break; | |
294 | ||
295 | } | |
296 | ||
297 | cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP; | |
298 | /* cmd[1] set earlier */ | |
299 | cmd[2] = | |
300 | (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16); | |
301 | cmd[3] = fg; | |
302 | cmd[4] = (GDC_TYPE_DRAWRECTP << 24) | (GDC_CMD_BLT_FILL << 16); | |
303 | cmd[5] = (rect->dy << 16) | (rect->dx); | |
304 | cmd[6] = (height << 16) | width; | |
305 | ||
306 | mb862xxfb_write_fifo(7, cmd, info); | |
307 | } | |
308 | ||
309 | void mb862xxfb_init_accel(struct fb_info *info, int xres) | |
310 | { | |
311 | struct mb862xxfb_par *par = info->par; | |
312 | ||
313 | if (info->var.bits_per_pixel == 32) { | |
314 | info->fbops->fb_fillrect = cfb_fillrect; | |
315 | info->fbops->fb_copyarea = cfb_copyarea; | |
316 | info->fbops->fb_imageblit = cfb_imageblit; | |
317 | } else { | |
318 | outreg(disp, GC_L0EM, 3); | |
319 | info->fbops->fb_fillrect = mb86290fb_fillrect; | |
320 | info->fbops->fb_copyarea = mb86290fb_copyarea; | |
321 | info->fbops->fb_imageblit = mb86290fb_imageblit; | |
322 | } | |
323 | outreg(draw, GDC_REG_DRAW_BASE, 0); | |
324 | outreg(draw, GDC_REG_MODE_MISC, 0x8000); | |
325 | outreg(draw, GDC_REG_X_RESOLUTION, xres); | |
326 | ||
327 | info->flags |= | |
328 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT | | |
329 | FBINFO_HWACCEL_IMAGEBLIT; | |
330 | info->fix.accel = 0xff; /*FIXME: add right define */ | |
331 | } | |
332 | EXPORT_SYMBOL(mb862xxfb_init_accel); |