1 #include "radeonfb.h"
2
3 /* the accelerated functions here are patterned after the
4 * "ACCEL_MMIO" ifdef branches in XFree86
5 * --dte
6 */
7
8 static void radeon_fixup_offset(struct radeonfb_info *rinfo)
9 {
10 u32 local_base;
11
12 /* *** Ugly workaround *** */
13 /*
14 * On some platforms, the video memory is mapped at 0 in radeon chip space
15 * (like PPCs) by the firmware. X will always move it up so that it's seen
16 * by the chip to be at the same address as the PCI BAR.
17 * That means that when switching back from X, there is a mismatch between
18 * the offsets programmed into the engine. This means that potentially,
19 * accel operations done before radeonfb has a chance to re-init the engine
20 * will have incorrect offsets, and potentially trash system memory !
21 *
22 * The correct fix is for fbcon to never call any accel op before the engine
23 * has properly been re-initialized (by a call to set_var), but this is a
24 * complex fix. This workaround in the meantime, called before every accel
25 * operation, makes sure the offsets are in sync.
26 */
27
28 radeon_fifo_wait (1);
29 local_base = INREG(MC_FB_LOCATION) << 16;
30 if (local_base == rinfo->fb_local_base)
31 return;
32
33 rinfo->fb_local_base = local_base;
34
35 radeon_fifo_wait (3);
36 OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
37 (rinfo->fb_local_base >> 10));
38 OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
39 OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
40 }
41
42 static void radeonfb_prim_fillrect(struct radeonfb_info *rinfo,
43 const struct fb_fillrect *region)
44 {
45 radeon_fifo_wait(4);
46
47 OUTREG(DP_GUI_MASTER_CNTL,
48 rinfo->dp_gui_master_cntl /* contains, like GMC_DST_32BPP */
49 | GMC_BRUSH_SOLID_COLOR
50 | ROP3_P);
51 if (radeon_get_dstbpp(rinfo->depth) != DST_8BPP)
52 OUTREG(DP_BRUSH_FRGD_CLR, rinfo->pseudo_palette[region->color]);
53 else
54 OUTREG(DP_BRUSH_FRGD_CLR, region->color);
55 OUTREG(DP_WRITE_MSK, 0xffffffff);
56 OUTREG(DP_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM));
57
58 radeon_fifo_wait(2);
59 OUTREG(DST_Y_X, (region->dy << 16) | region->dx);
60 OUTREG(DST_WIDTH_HEIGHT, (region->width << 16) | region->height);
61 }
62
63 void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
64 {
65 struct radeonfb_info *rinfo = info->par;
66 struct fb_fillrect modded;
67 int vxres, vyres;
68
69 if (info->state != FBINFO_STATE_RUNNING)
70 return;
71 if (info->flags & FBINFO_HWACCEL_DISABLED) {
72 cfb_fillrect(info, region);
73 return;
74 }
75
76 radeon_fixup_offset(rinfo);
77
78 vxres = info->var.xres_virtual;
79 vyres = info->var.yres_virtual;
80
81 memcpy(&modded, region, sizeof(struct fb_fillrect));
82
83 if(!modded.width || !modded.height ||
84 modded.dx >= vxres || modded.dy >= vyres)
85 return;
86
87 if(modded.dx + modded.width > vxres) modded.width = vxres - modded.dx;
88 if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
89
90 radeonfb_prim_fillrect(rinfo, &modded);
91 }
92
93 static void radeonfb_prim_copyarea(struct radeonfb_info *rinfo,
94 const struct fb_copyarea *area)
95 {
96 int xdir, ydir;
97 u32 sx, sy, dx, dy, w, h;
98
99 w = area->width; h = area->height;
100 dx = area->dx; dy = area->dy;
101 sx = area->sx; sy = area->sy;
102 xdir = sx - dx;
103 ydir = sy - dy;
104
105 if ( xdir < 0 ) { sx += w-1; dx += w-1; }
106 if ( ydir < 0 ) { sy += h-1; dy += h-1; }
107
108 radeon_fifo_wait(3);
109 OUTREG(DP_GUI_MASTER_CNTL,
110 rinfo->dp_gui_master_cntl /* i.e. GMC_DST_32BPP */
111 | GMC_BRUSH_NONE
112 | GMC_SRC_DSTCOLOR
113 | ROP3_S
114 | DP_SRC_SOURCE_MEMORY );
115 OUTREG(DP_WRITE_MSK, 0xffffffff);
116 OUTREG(DP_CNTL, (xdir>=0 ? DST_X_LEFT_TO_RIGHT : 0)
117 | (ydir>=0 ? DST_Y_TOP_TO_BOTTOM : 0));
118
119 radeon_fifo_wait(3);
120 OUTREG(SRC_Y_X, (sy << 16) | sx);
121 OUTREG(DST_Y_X, (dy << 16) | dx);
122 OUTREG(DST_HEIGHT_WIDTH, (h << 16) | w);
123 }
124
125
126 void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
127 {
128 struct radeonfb_info *rinfo = info->par;
129 struct fb_copyarea modded;
130 u32 vxres, vyres;
131 modded.sx = area->sx;
132 modded.sy = area->sy;
133 modded.dx = area->dx;
134 modded.dy = area->dy;
135 modded.width = area->width;
136 modded.height = area->height;
137
138 if (info->state != FBINFO_STATE_RUNNING)
139 return;
140 if (info->flags & FBINFO_HWACCEL_DISABLED) {
141 cfb_copyarea(info, area);
142 return;
143 }
144
145 radeon_fixup_offset(rinfo);
146
147 vxres = info->var.xres_virtual;
148 vyres = info->var.yres_virtual;
149
150 if(!modded.width || !modded.height ||
151 modded.sx >= vxres || modded.sy >= vyres ||
152 modded.dx >= vxres || modded.dy >= vyres)
153 return;
154
155 if(modded.sx + modded.width > vxres) modded.width = vxres - modded.sx;
156 if(modded.dx + modded.width > vxres) modded.width = vxres - modded.dx;
157 if(modded.sy + modded.height > vyres) modded.height = vyres - modded.sy;
158 if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
159
160 radeonfb_prim_copyarea(rinfo, &modded);
161 }
162
163 void radeonfb_imageblit(struct fb_info *info, const struct fb_image *image)
164 {
165 struct radeonfb_info *rinfo = info->par;
166
167 if (info->state != FBINFO_STATE_RUNNING)
168 return;
169 radeon_engine_idle();
170
171 cfb_imageblit(info, image);
172 }
173
174 int radeonfb_sync(struct fb_info *info)
175 {
176 struct radeonfb_info *rinfo = info->par;
177
178 if (info->state != FBINFO_STATE_RUNNING)
179 return 0;
180 radeon_engine_idle();
181
182 return 0;
183 }
184
185 void radeonfb_engine_reset(struct radeonfb_info *rinfo)
186 {
187 u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;
188 u32 host_path_cntl;
189
190 radeon_engine_flush (rinfo);
191
192 clock_cntl_index = INREG(CLOCK_CNTL_INDEX);
193 mclk_cntl = INPLL(MCLK_CNTL);
194
195 OUTPLL(MCLK_CNTL, (mclk_cntl |
196 FORCEON_MCLKA |
197 FORCEON_MCLKB |
198 FORCEON_YCLKA |
199 FORCEON_YCLKB |
200 FORCEON_MC |
201 FORCEON_AIC));
202
203 host_path_cntl = INREG(HOST_PATH_CNTL);
204 rbbm_soft_reset = INREG(RBBM_SOFT_RESET);
205
206 if (rinfo->family == CHIP_FAMILY_R300 ||
207 rinfo->family == CHIP_FAMILY_R350 ||
208 rinfo->family == CHIP_FAMILY_RV350) {
209 u32 tmp;
210
211 OUTREG(RBBM_SOFT_RESET, (rbbm_soft_reset |
212 SOFT_RESET_CP |
213 SOFT_RESET_HI |
214 SOFT_RESET_E2));
215 INREG(RBBM_SOFT_RESET);
216 OUTREG(RBBM_SOFT_RESET, 0);
217 tmp = INREG(RB2D_DSTCACHE_MODE);
218 OUTREG(RB2D_DSTCACHE_MODE, tmp | (1 << 17)); /* FIXME */
219 } else {
220 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset |
221 SOFT_RESET_CP |
222 SOFT_RESET_HI |
223 SOFT_RESET_SE |
224 SOFT_RESET_RE |
225 SOFT_RESET_PP |
226 SOFT_RESET_E2 |
227 SOFT_RESET_RB);
228 INREG(RBBM_SOFT_RESET);
229 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset & (u32)
230 ~(SOFT_RESET_CP |
231 SOFT_RESET_HI |
232 SOFT_RESET_SE |
233 SOFT_RESET_RE |
234 SOFT_RESET_PP |
235 SOFT_RESET_E2 |
236 SOFT_RESET_RB));
237 INREG(RBBM_SOFT_RESET);
238 }
239
240 OUTREG(HOST_PATH_CNTL, host_path_cntl | HDP_SOFT_RESET);
241 INREG(HOST_PATH_CNTL);
242 OUTREG(HOST_PATH_CNTL, host_path_cntl);
243
244 if (rinfo->family != CHIP_FAMILY_R300 ||
245 rinfo->family != CHIP_FAMILY_R350 ||
246 rinfo->family != CHIP_FAMILY_RV350)
247 OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset);
248
249 OUTREG(CLOCK_CNTL_INDEX, clock_cntl_index);
250 OUTPLL(MCLK_CNTL, mclk_cntl);
251 }
252
253 void radeonfb_engine_init (struct radeonfb_info *rinfo)
254 {
255 unsigned long temp;
256
257 /* disable 3D engine */
258 OUTREG(RB3D_CNTL, 0);
259
260 radeonfb_engine_reset(rinfo);
261
262 radeon_fifo_wait (1);
263 if ((rinfo->family != CHIP_FAMILY_R300) &&
264 (rinfo->family != CHIP_FAMILY_R350) &&
265 (rinfo->family != CHIP_FAMILY_RV350))
266 OUTREG(RB2D_DSTCACHE_MODE, 0);
267
268 radeon_fifo_wait (3);
269 /* We re-read MC_FB_LOCATION from card as it can have been
270 * modified by XFree drivers (ouch !)
271 */
272 rinfo->fb_local_base = INREG(MC_FB_LOCATION) << 16;
273
274 OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
275 (rinfo->fb_local_base >> 10));
276 OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
277 OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
278
279 radeon_fifo_wait (1);
280 #if defined(__BIG_ENDIAN)
281 OUTREGP(DP_DATATYPE, HOST_BIG_ENDIAN_EN, ~HOST_BIG_ENDIAN_EN);
282 #else
283 OUTREGP(DP_DATATYPE, 0, ~HOST_BIG_ENDIAN_EN);
284 #endif
285 radeon_fifo_wait (2);
286 OUTREG(DEFAULT_SC_TOP_LEFT, 0);
287 OUTREG(DEFAULT_SC_BOTTOM_RIGHT, (DEFAULT_SC_RIGHT_MAX |
288 DEFAULT_SC_BOTTOM_MAX));
289
290 temp = radeon_get_dstbpp(rinfo->depth);
291 rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
292
293 radeon_fifo_wait (1);
294 OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
295 GMC_BRUSH_SOLID_COLOR |
296 GMC_SRC_DATATYPE_COLOR));
297
298 radeon_fifo_wait (7);
299
300 /* clear line drawing regs */
301 OUTREG(DST_LINE_START, 0);
302 OUTREG(DST_LINE_END, 0);
303
304 /* set brush color regs */
305 OUTREG(DP_BRUSH_FRGD_CLR, 0xffffffff);
306 OUTREG(DP_BRUSH_BKGD_CLR, 0x00000000);
307
308 /* set source color regs */
309 OUTREG(DP_SRC_FRGD_CLR, 0xffffffff);
310 OUTREG(DP_SRC_BKGD_CLR, 0x00000000);
311
312 /* default write mask */
313 OUTREG(DP_WRITE_MSK, 0xffffffff);
314
315 radeon_engine_idle ();
316 }
317
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