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drm/i915: Fix Sandybridge fence registers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / gpu / drm / i915 / i915_suspend.c
blob31f08581e93a46dbdc2ca1cfa563faec31e9ffc5
1 /*
2 *
3 * Copyright 2008 (c) Intel Corporation
4 * Jesse Barnes <jbarnes@virtuousgeek.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27 #include "drmP.h"
28 #include "drm.h"
29 #include "i915_drm.h"
30 #include "intel_drv.h"
31
32 static bool i915_pipe_enabled(struct drm_device *dev, enum pipe pipe)
33 {
34 struct drm_i915_private *dev_priv = dev->dev_private;
35 u32 dpll_reg;
36
37 if (HAS_PCH_SPLIT(dev)) {
38 dpll_reg = (pipe == PIPE_A) ? PCH_DPLL_A: PCH_DPLL_B;
39 } else {
40 dpll_reg = (pipe == PIPE_A) ? DPLL_A: DPLL_B;
41 }
42
43 return (I915_READ(dpll_reg) & DPLL_VCO_ENABLE);
44 }
45
46 static void i915_save_palette(struct drm_device *dev, enum pipe pipe)
47 {
48 struct drm_i915_private *dev_priv = dev->dev_private;
49 unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
50 u32 *array;
51 int i;
52
53 if (!i915_pipe_enabled(dev, pipe))
54 return;
55
56 if (HAS_PCH_SPLIT(dev))
57 reg = (pipe == PIPE_A) ? LGC_PALETTE_A : LGC_PALETTE_B;
58
59 if (pipe == PIPE_A)
60 array = dev_priv->save_palette_a;
61 else
62 array = dev_priv->save_palette_b;
63
64 for(i = 0; i < 256; i++)
65 array[i] = I915_READ(reg + (i << 2));
66 }
67
68 static void i915_restore_palette(struct drm_device *dev, enum pipe pipe)
69 {
70 struct drm_i915_private *dev_priv = dev->dev_private;
71 unsigned long reg = (pipe == PIPE_A ? PALETTE_A : PALETTE_B);
72 u32 *array;
73 int i;
74
75 if (!i915_pipe_enabled(dev, pipe))
76 return;
77
78 if (HAS_PCH_SPLIT(dev))
79 reg = (pipe == PIPE_A) ? LGC_PALETTE_A : LGC_PALETTE_B;
80
81 if (pipe == PIPE_A)
82 array = dev_priv->save_palette_a;
83 else
84 array = dev_priv->save_palette_b;
85
86 for(i = 0; i < 256; i++)
87 I915_WRITE(reg + (i << 2), array[i]);
88 }
89
90 static u8 i915_read_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg)
91 {
92 struct drm_i915_private *dev_priv = dev->dev_private;
93
94 I915_WRITE8(index_port, reg);
95 return I915_READ8(data_port);
96 }
97
98 static u8 i915_read_ar(struct drm_device *dev, u16 st01, u8 reg, u16 palette_enable)
99 {
100 struct drm_i915_private *dev_priv = dev->dev_private;
101
102 I915_READ8(st01);
103 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
104 return I915_READ8(VGA_AR_DATA_READ);
105 }
106
107 static void i915_write_ar(struct drm_device *dev, u16 st01, u8 reg, u8 val, u16 palette_enable)
108 {
109 struct drm_i915_private *dev_priv = dev->dev_private;
110
111 I915_READ8(st01);
112 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
113 I915_WRITE8(VGA_AR_DATA_WRITE, val);
114 }
115
116 static void i915_write_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg, u8 val)
117 {
118 struct drm_i915_private *dev_priv = dev->dev_private;
119
120 I915_WRITE8(index_port, reg);
121 I915_WRITE8(data_port, val);
122 }
123
124 static void i915_save_vga(struct drm_device *dev)
125 {
126 struct drm_i915_private *dev_priv = dev->dev_private;
127 int i;
128 u16 cr_index, cr_data, st01;
129
130 /* VGA color palette registers */
131 dev_priv->saveDACMASK = I915_READ8(VGA_DACMASK);
132
133 /* MSR bits */
134 dev_priv->saveMSR = I915_READ8(VGA_MSR_READ);
135 if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
136 cr_index = VGA_CR_INDEX_CGA;
137 cr_data = VGA_CR_DATA_CGA;
138 st01 = VGA_ST01_CGA;
139 } else {
140 cr_index = VGA_CR_INDEX_MDA;
141 cr_data = VGA_CR_DATA_MDA;
142 st01 = VGA_ST01_MDA;
143 }
144
145 /* CRT controller regs */
146 i915_write_indexed(dev, cr_index, cr_data, 0x11,
147 i915_read_indexed(dev, cr_index, cr_data, 0x11) &
148 (~0x80));
149 for (i = 0; i <= 0x24; i++)
150 dev_priv->saveCR[i] =
151 i915_read_indexed(dev, cr_index, cr_data, i);
152 /* Make sure we don't turn off CR group 0 writes */
153 dev_priv->saveCR[0x11] &= ~0x80;
154
155 /* Attribute controller registers */
156 I915_READ8(st01);
157 dev_priv->saveAR_INDEX = I915_READ8(VGA_AR_INDEX);
158 for (i = 0; i <= 0x14; i++)
159 dev_priv->saveAR[i] = i915_read_ar(dev, st01, i, 0);
160 I915_READ8(st01);
161 I915_WRITE8(VGA_AR_INDEX, dev_priv->saveAR_INDEX);
162 I915_READ8(st01);
163
164 /* Graphics controller registers */
165 for (i = 0; i < 9; i++)
166 dev_priv->saveGR[i] =
167 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i);
168
169 dev_priv->saveGR[0x10] =
170 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10);
171 dev_priv->saveGR[0x11] =
172 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11);
173 dev_priv->saveGR[0x18] =
174 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18);
175
176 /* Sequencer registers */
177 for (i = 0; i < 8; i++)
178 dev_priv->saveSR[i] =
179 i915_read_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i);
180 }
181
182 static void i915_restore_vga(struct drm_device *dev)
183 {
184 struct drm_i915_private *dev_priv = dev->dev_private;
185 int i;
186 u16 cr_index, cr_data, st01;
187
188 /* MSR bits */
189 I915_WRITE8(VGA_MSR_WRITE, dev_priv->saveMSR);
190 if (dev_priv->saveMSR & VGA_MSR_CGA_MODE) {
191 cr_index = VGA_CR_INDEX_CGA;
192 cr_data = VGA_CR_DATA_CGA;
193 st01 = VGA_ST01_CGA;
194 } else {
195 cr_index = VGA_CR_INDEX_MDA;
196 cr_data = VGA_CR_DATA_MDA;
197 st01 = VGA_ST01_MDA;
198 }
199
200 /* Sequencer registers, don't write SR07 */
201 for (i = 0; i < 7; i++)
202 i915_write_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i,
203 dev_priv->saveSR[i]);
204
205 /* CRT controller regs */
206 /* Enable CR group 0 writes */
207 i915_write_indexed(dev, cr_index, cr_data, 0x11, dev_priv->saveCR[0x11]);
208 for (i = 0; i <= 0x24; i++)
209 i915_write_indexed(dev, cr_index, cr_data, i, dev_priv->saveCR[i]);
210
211 /* Graphics controller regs */
212 for (i = 0; i < 9; i++)
213 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i,
214 dev_priv->saveGR[i]);
215
216 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10,
217 dev_priv->saveGR[0x10]);
218 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11,
219 dev_priv->saveGR[0x11]);
220 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18,
221 dev_priv->saveGR[0x18]);
222
223 /* Attribute controller registers */
224 I915_READ8(st01); /* switch back to index mode */
225 for (i = 0; i <= 0x14; i++)
226 i915_write_ar(dev, st01, i, dev_priv->saveAR[i], 0);
227 I915_READ8(st01); /* switch back to index mode */
228 I915_WRITE8(VGA_AR_INDEX, dev_priv->saveAR_INDEX | 0x20);
229 I915_READ8(st01);
230
231 /* VGA color palette registers */
232 I915_WRITE8(VGA_DACMASK, dev_priv->saveDACMASK);
233 }
234
235 static void i915_save_modeset_reg(struct drm_device *dev)
236 {
237 struct drm_i915_private *dev_priv = dev->dev_private;
238
239 if (drm_core_check_feature(dev, DRIVER_MODESET))
240 return;
241
242 if (HAS_PCH_SPLIT(dev)) {
243 dev_priv->savePCH_DREF_CONTROL = I915_READ(PCH_DREF_CONTROL);
244 dev_priv->saveDISP_ARB_CTL = I915_READ(DISP_ARB_CTL);
245 }
246
247 /* Pipe & plane A info */
248 dev_priv->savePIPEACONF = I915_READ(PIPEACONF);
249 dev_priv->savePIPEASRC = I915_READ(PIPEASRC);
250 if (HAS_PCH_SPLIT(dev)) {
251 dev_priv->saveFPA0 = I915_READ(PCH_FPA0);
252 dev_priv->saveFPA1 = I915_READ(PCH_FPA1);
253 dev_priv->saveDPLL_A = I915_READ(PCH_DPLL_A);
254 } else {
255 dev_priv->saveFPA0 = I915_READ(FPA0);
256 dev_priv->saveFPA1 = I915_READ(FPA1);
257 dev_priv->saveDPLL_A = I915_READ(DPLL_A);
258 }
259 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev))
260 dev_priv->saveDPLL_A_MD = I915_READ(DPLL_A_MD);
261 dev_priv->saveHTOTAL_A = I915_READ(HTOTAL_A);
262 dev_priv->saveHBLANK_A = I915_READ(HBLANK_A);
263 dev_priv->saveHSYNC_A = I915_READ(HSYNC_A);
264 dev_priv->saveVTOTAL_A = I915_READ(VTOTAL_A);
265 dev_priv->saveVBLANK_A = I915_READ(VBLANK_A);
266 dev_priv->saveVSYNC_A = I915_READ(VSYNC_A);
267 if (!HAS_PCH_SPLIT(dev))
268 dev_priv->saveBCLRPAT_A = I915_READ(BCLRPAT_A);
269
270 if (HAS_PCH_SPLIT(dev)) {
271 dev_priv->savePIPEA_DATA_M1 = I915_READ(PIPEA_DATA_M1);
272 dev_priv->savePIPEA_DATA_N1 = I915_READ(PIPEA_DATA_N1);
273 dev_priv->savePIPEA_LINK_M1 = I915_READ(PIPEA_LINK_M1);
274 dev_priv->savePIPEA_LINK_N1 = I915_READ(PIPEA_LINK_N1);
275
276 dev_priv->saveFDI_TXA_CTL = I915_READ(FDI_TXA_CTL);
277 dev_priv->saveFDI_RXA_CTL = I915_READ(FDI_RXA_CTL);
278
279 dev_priv->savePFA_CTL_1 = I915_READ(PFA_CTL_1);
280 dev_priv->savePFA_WIN_SZ = I915_READ(PFA_WIN_SZ);
281 dev_priv->savePFA_WIN_POS = I915_READ(PFA_WIN_POS);
282
283 dev_priv->saveTRANSACONF = I915_READ(TRANSACONF);
284 dev_priv->saveTRANS_HTOTAL_A = I915_READ(TRANS_HTOTAL_A);
285 dev_priv->saveTRANS_HBLANK_A = I915_READ(TRANS_HBLANK_A);
286 dev_priv->saveTRANS_HSYNC_A = I915_READ(TRANS_HSYNC_A);
287 dev_priv->saveTRANS_VTOTAL_A = I915_READ(TRANS_VTOTAL_A);
288 dev_priv->saveTRANS_VBLANK_A = I915_READ(TRANS_VBLANK_A);
289 dev_priv->saveTRANS_VSYNC_A = I915_READ(TRANS_VSYNC_A);
290 }
291
292 dev_priv->saveDSPACNTR = I915_READ(DSPACNTR);
293 dev_priv->saveDSPASTRIDE = I915_READ(DSPASTRIDE);
294 dev_priv->saveDSPASIZE = I915_READ(DSPASIZE);
295 dev_priv->saveDSPAPOS = I915_READ(DSPAPOS);
296 dev_priv->saveDSPAADDR = I915_READ(DSPAADDR);
297 if (IS_I965G(dev)) {
298 dev_priv->saveDSPASURF = I915_READ(DSPASURF);
299 dev_priv->saveDSPATILEOFF = I915_READ(DSPATILEOFF);
300 }
301 i915_save_palette(dev, PIPE_A);
302 dev_priv->savePIPEASTAT = I915_READ(PIPEASTAT);
303
304 /* Pipe & plane B info */
305 dev_priv->savePIPEBCONF = I915_READ(PIPEBCONF);
306 dev_priv->savePIPEBSRC = I915_READ(PIPEBSRC);
307 if (HAS_PCH_SPLIT(dev)) {
308 dev_priv->saveFPB0 = I915_READ(PCH_FPB0);
309 dev_priv->saveFPB1 = I915_READ(PCH_FPB1);
310 dev_priv->saveDPLL_B = I915_READ(PCH_DPLL_B);
311 } else {
312 dev_priv->saveFPB0 = I915_READ(FPB0);
313 dev_priv->saveFPB1 = I915_READ(FPB1);
314 dev_priv->saveDPLL_B = I915_READ(DPLL_B);
315 }
316 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev))
317 dev_priv->saveDPLL_B_MD = I915_READ(DPLL_B_MD);
318 dev_priv->saveHTOTAL_B = I915_READ(HTOTAL_B);
319 dev_priv->saveHBLANK_B = I915_READ(HBLANK_B);
320 dev_priv->saveHSYNC_B = I915_READ(HSYNC_B);
321 dev_priv->saveVTOTAL_B = I915_READ(VTOTAL_B);
322 dev_priv->saveVBLANK_B = I915_READ(VBLANK_B);
323 dev_priv->saveVSYNC_B = I915_READ(VSYNC_B);
324 if (!HAS_PCH_SPLIT(dev))
325 dev_priv->saveBCLRPAT_B = I915_READ(BCLRPAT_B);
326
327 if (HAS_PCH_SPLIT(dev)) {
328 dev_priv->savePIPEB_DATA_M1 = I915_READ(PIPEB_DATA_M1);
329 dev_priv->savePIPEB_DATA_N1 = I915_READ(PIPEB_DATA_N1);
330 dev_priv->savePIPEB_LINK_M1 = I915_READ(PIPEB_LINK_M1);
331 dev_priv->savePIPEB_LINK_N1 = I915_READ(PIPEB_LINK_N1);
332
333 dev_priv->saveFDI_TXB_CTL = I915_READ(FDI_TXB_CTL);
334 dev_priv->saveFDI_RXB_CTL = I915_READ(FDI_RXB_CTL);
335
336 dev_priv->savePFB_CTL_1 = I915_READ(PFB_CTL_1);
337 dev_priv->savePFB_WIN_SZ = I915_READ(PFB_WIN_SZ);
338 dev_priv->savePFB_WIN_POS = I915_READ(PFB_WIN_POS);
339
340 dev_priv->saveTRANSBCONF = I915_READ(TRANSBCONF);
341 dev_priv->saveTRANS_HTOTAL_B = I915_READ(TRANS_HTOTAL_B);
342 dev_priv->saveTRANS_HBLANK_B = I915_READ(TRANS_HBLANK_B);
343 dev_priv->saveTRANS_HSYNC_B = I915_READ(TRANS_HSYNC_B);
344 dev_priv->saveTRANS_VTOTAL_B = I915_READ(TRANS_VTOTAL_B);
345 dev_priv->saveTRANS_VBLANK_B = I915_READ(TRANS_VBLANK_B);
346 dev_priv->saveTRANS_VSYNC_B = I915_READ(TRANS_VSYNC_B);
347 }
348
349 dev_priv->saveDSPBCNTR = I915_READ(DSPBCNTR);
350 dev_priv->saveDSPBSTRIDE = I915_READ(DSPBSTRIDE);
351 dev_priv->saveDSPBSIZE = I915_READ(DSPBSIZE);
352 dev_priv->saveDSPBPOS = I915_READ(DSPBPOS);
353 dev_priv->saveDSPBADDR = I915_READ(DSPBADDR);
354 if (IS_I965GM(dev) || IS_GM45(dev)) {
355 dev_priv->saveDSPBSURF = I915_READ(DSPBSURF);
356 dev_priv->saveDSPBTILEOFF = I915_READ(DSPBTILEOFF);
357 }
358 i915_save_palette(dev, PIPE_B);
359 dev_priv->savePIPEBSTAT = I915_READ(PIPEBSTAT);
360 return;
361 }
362
363 static void i915_restore_modeset_reg(struct drm_device *dev)
364 {
365 struct drm_i915_private *dev_priv = dev->dev_private;
366 int dpll_a_reg, fpa0_reg, fpa1_reg;
367 int dpll_b_reg, fpb0_reg, fpb1_reg;
368
369 if (drm_core_check_feature(dev, DRIVER_MODESET))
370 return;
371
372 if (HAS_PCH_SPLIT(dev)) {
373 dpll_a_reg = PCH_DPLL_A;
374 dpll_b_reg = PCH_DPLL_B;
375 fpa0_reg = PCH_FPA0;
376 fpb0_reg = PCH_FPB0;
377 fpa1_reg = PCH_FPA1;
378 fpb1_reg = PCH_FPB1;
379 } else {
380 dpll_a_reg = DPLL_A;
381 dpll_b_reg = DPLL_B;
382 fpa0_reg = FPA0;
383 fpb0_reg = FPB0;
384 fpa1_reg = FPA1;
385 fpb1_reg = FPB1;
386 }
387
388 if (HAS_PCH_SPLIT(dev)) {
389 I915_WRITE(PCH_DREF_CONTROL, dev_priv->savePCH_DREF_CONTROL);
390 I915_WRITE(DISP_ARB_CTL, dev_priv->saveDISP_ARB_CTL);
391 }
392
393 /* Pipe & plane A info */
394 /* Prime the clock */
395 if (dev_priv->saveDPLL_A & DPLL_VCO_ENABLE) {
396 I915_WRITE(dpll_a_reg, dev_priv->saveDPLL_A &
397 ~DPLL_VCO_ENABLE);
398 POSTING_READ(dpll_a_reg);
399 udelay(150);
400 }
401 I915_WRITE(fpa0_reg, dev_priv->saveFPA0);
402 I915_WRITE(fpa1_reg, dev_priv->saveFPA1);
403 /* Actually enable it */
404 I915_WRITE(dpll_a_reg, dev_priv->saveDPLL_A);
405 POSTING_READ(dpll_a_reg);
406 udelay(150);
407 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev)) {
408 I915_WRITE(DPLL_A_MD, dev_priv->saveDPLL_A_MD);
409 POSTING_READ(DPLL_A_MD);
410 }
411 udelay(150);
412
413 /* Restore mode */
414 I915_WRITE(HTOTAL_A, dev_priv->saveHTOTAL_A);
415 I915_WRITE(HBLANK_A, dev_priv->saveHBLANK_A);
416 I915_WRITE(HSYNC_A, dev_priv->saveHSYNC_A);
417 I915_WRITE(VTOTAL_A, dev_priv->saveVTOTAL_A);
418 I915_WRITE(VBLANK_A, dev_priv->saveVBLANK_A);
419 I915_WRITE(VSYNC_A, dev_priv->saveVSYNC_A);
420 if (!HAS_PCH_SPLIT(dev))
421 I915_WRITE(BCLRPAT_A, dev_priv->saveBCLRPAT_A);
422
423 if (HAS_PCH_SPLIT(dev)) {
424 I915_WRITE(PIPEA_DATA_M1, dev_priv->savePIPEA_DATA_M1);
425 I915_WRITE(PIPEA_DATA_N1, dev_priv->savePIPEA_DATA_N1);
426 I915_WRITE(PIPEA_LINK_M1, dev_priv->savePIPEA_LINK_M1);
427 I915_WRITE(PIPEA_LINK_N1, dev_priv->savePIPEA_LINK_N1);
428
429 I915_WRITE(FDI_RXA_CTL, dev_priv->saveFDI_RXA_CTL);
430 I915_WRITE(FDI_TXA_CTL, dev_priv->saveFDI_TXA_CTL);
431
432 I915_WRITE(PFA_CTL_1, dev_priv->savePFA_CTL_1);
433 I915_WRITE(PFA_WIN_SZ, dev_priv->savePFA_WIN_SZ);
434 I915_WRITE(PFA_WIN_POS, dev_priv->savePFA_WIN_POS);
435
436 I915_WRITE(TRANSACONF, dev_priv->saveTRANSACONF);
437 I915_WRITE(TRANS_HTOTAL_A, dev_priv->saveTRANS_HTOTAL_A);
438 I915_WRITE(TRANS_HBLANK_A, dev_priv->saveTRANS_HBLANK_A);
439 I915_WRITE(TRANS_HSYNC_A, dev_priv->saveTRANS_HSYNC_A);
440 I915_WRITE(TRANS_VTOTAL_A, dev_priv->saveTRANS_VTOTAL_A);
441 I915_WRITE(TRANS_VBLANK_A, dev_priv->saveTRANS_VBLANK_A);
442 I915_WRITE(TRANS_VSYNC_A, dev_priv->saveTRANS_VSYNC_A);
443 }
444
445 /* Restore plane info */
446 I915_WRITE(DSPASIZE, dev_priv->saveDSPASIZE);
447 I915_WRITE(DSPAPOS, dev_priv->saveDSPAPOS);
448 I915_WRITE(PIPEASRC, dev_priv->savePIPEASRC);
449 I915_WRITE(DSPAADDR, dev_priv->saveDSPAADDR);
450 I915_WRITE(DSPASTRIDE, dev_priv->saveDSPASTRIDE);
451 if (IS_I965G(dev)) {
452 I915_WRITE(DSPASURF, dev_priv->saveDSPASURF);
453 I915_WRITE(DSPATILEOFF, dev_priv->saveDSPATILEOFF);
454 }
455
456 I915_WRITE(PIPEACONF, dev_priv->savePIPEACONF);
457
458 i915_restore_palette(dev, PIPE_A);
459 /* Enable the plane */
460 I915_WRITE(DSPACNTR, dev_priv->saveDSPACNTR);
461 I915_WRITE(DSPAADDR, I915_READ(DSPAADDR));
462
463 /* Pipe & plane B info */
464 if (dev_priv->saveDPLL_B & DPLL_VCO_ENABLE) {
465 I915_WRITE(dpll_b_reg, dev_priv->saveDPLL_B &
466 ~DPLL_VCO_ENABLE);
467 POSTING_READ(dpll_b_reg);
468 udelay(150);
469 }
470 I915_WRITE(fpb0_reg, dev_priv->saveFPB0);
471 I915_WRITE(fpb1_reg, dev_priv->saveFPB1);
472 /* Actually enable it */
473 I915_WRITE(dpll_b_reg, dev_priv->saveDPLL_B);
474 POSTING_READ(dpll_b_reg);
475 udelay(150);
476 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev)) {
477 I915_WRITE(DPLL_B_MD, dev_priv->saveDPLL_B_MD);
478 POSTING_READ(DPLL_B_MD);
479 }
480 udelay(150);
481
482 /* Restore mode */
483 I915_WRITE(HTOTAL_B, dev_priv->saveHTOTAL_B);
484 I915_WRITE(HBLANK_B, dev_priv->saveHBLANK_B);
485 I915_WRITE(HSYNC_B, dev_priv->saveHSYNC_B);
486 I915_WRITE(VTOTAL_B, dev_priv->saveVTOTAL_B);
487 I915_WRITE(VBLANK_B, dev_priv->saveVBLANK_B);
488 I915_WRITE(VSYNC_B, dev_priv->saveVSYNC_B);
489 if (!HAS_PCH_SPLIT(dev))
490 I915_WRITE(BCLRPAT_B, dev_priv->saveBCLRPAT_B);
491
492 if (HAS_PCH_SPLIT(dev)) {
493 I915_WRITE(PIPEB_DATA_M1, dev_priv->savePIPEB_DATA_M1);
494 I915_WRITE(PIPEB_DATA_N1, dev_priv->savePIPEB_DATA_N1);
495 I915_WRITE(PIPEB_LINK_M1, dev_priv->savePIPEB_LINK_M1);
496 I915_WRITE(PIPEB_LINK_N1, dev_priv->savePIPEB_LINK_N1);
497
498 I915_WRITE(FDI_RXB_CTL, dev_priv->saveFDI_RXB_CTL);
499 I915_WRITE(FDI_TXB_CTL, dev_priv->saveFDI_TXB_CTL);
500
501 I915_WRITE(PFB_CTL_1, dev_priv->savePFB_CTL_1);
502 I915_WRITE(PFB_WIN_SZ, dev_priv->savePFB_WIN_SZ);
503 I915_WRITE(PFB_WIN_POS, dev_priv->savePFB_WIN_POS);
504
505 I915_WRITE(TRANSBCONF, dev_priv->saveTRANSBCONF);
506 I915_WRITE(TRANS_HTOTAL_B, dev_priv->saveTRANS_HTOTAL_B);
507 I915_WRITE(TRANS_HBLANK_B, dev_priv->saveTRANS_HBLANK_B);
508 I915_WRITE(TRANS_HSYNC_B, dev_priv->saveTRANS_HSYNC_B);
509 I915_WRITE(TRANS_VTOTAL_B, dev_priv->saveTRANS_VTOTAL_B);
510 I915_WRITE(TRANS_VBLANK_B, dev_priv->saveTRANS_VBLANK_B);
511 I915_WRITE(TRANS_VSYNC_B, dev_priv->saveTRANS_VSYNC_B);
512 }
513
514 /* Restore plane info */
515 I915_WRITE(DSPBSIZE, dev_priv->saveDSPBSIZE);
516 I915_WRITE(DSPBPOS, dev_priv->saveDSPBPOS);
517 I915_WRITE(PIPEBSRC, dev_priv->savePIPEBSRC);
518 I915_WRITE(DSPBADDR, dev_priv->saveDSPBADDR);
519 I915_WRITE(DSPBSTRIDE, dev_priv->saveDSPBSTRIDE);
520 if (IS_I965G(dev)) {
521 I915_WRITE(DSPBSURF, dev_priv->saveDSPBSURF);
522 I915_WRITE(DSPBTILEOFF, dev_priv->saveDSPBTILEOFF);
523 }
524
525 I915_WRITE(PIPEBCONF, dev_priv->savePIPEBCONF);
526
527 i915_restore_palette(dev, PIPE_B);
528 /* Enable the plane */
529 I915_WRITE(DSPBCNTR, dev_priv->saveDSPBCNTR);
530 I915_WRITE(DSPBADDR, I915_READ(DSPBADDR));
531
532 return;
533 }
534
535 void i915_save_display(struct drm_device *dev)
536 {
537 struct drm_i915_private *dev_priv = dev->dev_private;
538
539 /* Display arbitration control */
540 dev_priv->saveDSPARB = I915_READ(DSPARB);
541
542 /* This is only meaningful in non-KMS mode */
543 /* Don't save them in KMS mode */
544 i915_save_modeset_reg(dev);
545
546 /* Cursor state */
547 dev_priv->saveCURACNTR = I915_READ(CURACNTR);
548 dev_priv->saveCURAPOS = I915_READ(CURAPOS);
549 dev_priv->saveCURABASE = I915_READ(CURABASE);
550 dev_priv->saveCURBCNTR = I915_READ(CURBCNTR);
551 dev_priv->saveCURBPOS = I915_READ(CURBPOS);
552 dev_priv->saveCURBBASE = I915_READ(CURBBASE);
553 if (!IS_I9XX(dev))
554 dev_priv->saveCURSIZE = I915_READ(CURSIZE);
555
556 /* CRT state */
557 if (HAS_PCH_SPLIT(dev)) {
558 dev_priv->saveADPA = I915_READ(PCH_ADPA);
559 } else {
560 dev_priv->saveADPA = I915_READ(ADPA);
561 }
562
563 /* LVDS state */
564 if (HAS_PCH_SPLIT(dev)) {
565 dev_priv->savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
566 dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_PCH_CTL1);
567 dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_PCH_CTL2);
568 dev_priv->saveBLC_CPU_PWM_CTL = I915_READ(BLC_PWM_CPU_CTL);
569 dev_priv->saveBLC_CPU_PWM_CTL2 = I915_READ(BLC_PWM_CPU_CTL2);
570 dev_priv->saveLVDS = I915_READ(PCH_LVDS);
571 } else {
572 dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL);
573 dev_priv->savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
574 dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
575 dev_priv->saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL);
576 if (IS_I965G(dev))
577 dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
578 if (IS_MOBILE(dev) && !IS_I830(dev))
579 dev_priv->saveLVDS = I915_READ(LVDS);
580 }
581
582 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
583 dev_priv->savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
584
585 if (HAS_PCH_SPLIT(dev)) {
586 dev_priv->savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
587 dev_priv->savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
588 dev_priv->savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
589 } else {
590 dev_priv->savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
591 dev_priv->savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
592 dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR);
593 }
594
595 /* Display Port state */
596 if (SUPPORTS_INTEGRATED_DP(dev)) {
597 dev_priv->saveDP_B = I915_READ(DP_B);
598 dev_priv->saveDP_C = I915_READ(DP_C);
599 dev_priv->saveDP_D = I915_READ(DP_D);
600 dev_priv->savePIPEA_GMCH_DATA_M = I915_READ(PIPEA_GMCH_DATA_M);
601 dev_priv->savePIPEB_GMCH_DATA_M = I915_READ(PIPEB_GMCH_DATA_M);
602 dev_priv->savePIPEA_GMCH_DATA_N = I915_READ(PIPEA_GMCH_DATA_N);
603 dev_priv->savePIPEB_GMCH_DATA_N = I915_READ(PIPEB_GMCH_DATA_N);
604 dev_priv->savePIPEA_DP_LINK_M = I915_READ(PIPEA_DP_LINK_M);
605 dev_priv->savePIPEB_DP_LINK_M = I915_READ(PIPEB_DP_LINK_M);
606 dev_priv->savePIPEA_DP_LINK_N = I915_READ(PIPEA_DP_LINK_N);
607 dev_priv->savePIPEB_DP_LINK_N = I915_READ(PIPEB_DP_LINK_N);
608 }
609 /* FIXME: save TV & SDVO state */
610
611 /* Only save FBC state on the platform that supports FBC */
612 if (I915_HAS_FBC(dev)) {
613 if (HAS_PCH_SPLIT(dev)) {
614 dev_priv->saveDPFC_CB_BASE = I915_READ(ILK_DPFC_CB_BASE);
615 } else if (IS_GM45(dev)) {
616 dev_priv->saveDPFC_CB_BASE = I915_READ(DPFC_CB_BASE);
617 } else {
618 dev_priv->saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE);
619 dev_priv->saveFBC_LL_BASE = I915_READ(FBC_LL_BASE);
620 dev_priv->saveFBC_CONTROL2 = I915_READ(FBC_CONTROL2);
621 dev_priv->saveFBC_CONTROL = I915_READ(FBC_CONTROL);
622 }
623 }
624
625 /* VGA state */
626 dev_priv->saveVGA0 = I915_READ(VGA0);
627 dev_priv->saveVGA1 = I915_READ(VGA1);
628 dev_priv->saveVGA_PD = I915_READ(VGA_PD);
629 if (HAS_PCH_SPLIT(dev))
630 dev_priv->saveVGACNTRL = I915_READ(CPU_VGACNTRL);
631 else
632 dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
633
634 i915_save_vga(dev);
635 }
636
637 void i915_restore_display(struct drm_device *dev)
638 {
639 struct drm_i915_private *dev_priv = dev->dev_private;
640
641 /* Display arbitration */
642 I915_WRITE(DSPARB, dev_priv->saveDSPARB);
643
644 /* Display port ratios (must be done before clock is set) */
645 if (SUPPORTS_INTEGRATED_DP(dev)) {
646 I915_WRITE(PIPEA_GMCH_DATA_M, dev_priv->savePIPEA_GMCH_DATA_M);
647 I915_WRITE(PIPEB_GMCH_DATA_M, dev_priv->savePIPEB_GMCH_DATA_M);
648 I915_WRITE(PIPEA_GMCH_DATA_N, dev_priv->savePIPEA_GMCH_DATA_N);
649 I915_WRITE(PIPEB_GMCH_DATA_N, dev_priv->savePIPEB_GMCH_DATA_N);
650 I915_WRITE(PIPEA_DP_LINK_M, dev_priv->savePIPEA_DP_LINK_M);
651 I915_WRITE(PIPEB_DP_LINK_M, dev_priv->savePIPEB_DP_LINK_M);
652 I915_WRITE(PIPEA_DP_LINK_N, dev_priv->savePIPEA_DP_LINK_N);
653 I915_WRITE(PIPEB_DP_LINK_N, dev_priv->savePIPEB_DP_LINK_N);
654 }
655
656 /* This is only meaningful in non-KMS mode */
657 /* Don't restore them in KMS mode */
658 i915_restore_modeset_reg(dev);
659
660 /* Cursor state */
661 I915_WRITE(CURAPOS, dev_priv->saveCURAPOS);
662 I915_WRITE(CURACNTR, dev_priv->saveCURACNTR);
663 I915_WRITE(CURABASE, dev_priv->saveCURABASE);
664 I915_WRITE(CURBPOS, dev_priv->saveCURBPOS);
665 I915_WRITE(CURBCNTR, dev_priv->saveCURBCNTR);
666 I915_WRITE(CURBBASE, dev_priv->saveCURBBASE);
667 if (!IS_I9XX(dev))
668 I915_WRITE(CURSIZE, dev_priv->saveCURSIZE);
669
670 /* CRT state */
671 if (HAS_PCH_SPLIT(dev))
672 I915_WRITE(PCH_ADPA, dev_priv->saveADPA);
673 else
674 I915_WRITE(ADPA, dev_priv->saveADPA);
675
676 /* LVDS state */
677 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev))
678 I915_WRITE(BLC_PWM_CTL2, dev_priv->saveBLC_PWM_CTL2);
679
680 if (HAS_PCH_SPLIT(dev)) {
681 I915_WRITE(PCH_LVDS, dev_priv->saveLVDS);
682 } else if (IS_MOBILE(dev) && !IS_I830(dev))
683 I915_WRITE(LVDS, dev_priv->saveLVDS);
684
685 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
686 I915_WRITE(PFIT_CONTROL, dev_priv->savePFIT_CONTROL);
687
688 if (HAS_PCH_SPLIT(dev)) {
689 I915_WRITE(BLC_PWM_PCH_CTL1, dev_priv->saveBLC_PWM_CTL);
690 I915_WRITE(BLC_PWM_PCH_CTL2, dev_priv->saveBLC_PWM_CTL2);
691 I915_WRITE(BLC_PWM_CPU_CTL, dev_priv->saveBLC_CPU_PWM_CTL);
692 I915_WRITE(BLC_PWM_CPU_CTL2, dev_priv->saveBLC_CPU_PWM_CTL2);
693 I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->savePP_ON_DELAYS);
694 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
695 I915_WRITE(PCH_PP_DIVISOR, dev_priv->savePP_DIVISOR);
696 I915_WRITE(PCH_PP_CONTROL, dev_priv->savePP_CONTROL);
697 I915_WRITE(MCHBAR_RENDER_STANDBY,
698 dev_priv->saveMCHBAR_RENDER_STANDBY);
699 } else {
700 I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS);
701 I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
702 I915_WRITE(BLC_HIST_CTL, dev_priv->saveBLC_HIST_CTL);
703 I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON_DELAYS);
704 I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
705 I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR);
706 I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL);
707 }
708
709 /* Display Port state */
710 if (SUPPORTS_INTEGRATED_DP(dev)) {
711 I915_WRITE(DP_B, dev_priv->saveDP_B);
712 I915_WRITE(DP_C, dev_priv->saveDP_C);
713 I915_WRITE(DP_D, dev_priv->saveDP_D);
714 }
715 /* FIXME: restore TV & SDVO state */
716
717 /* only restore FBC info on the platform that supports FBC*/
718 if (I915_HAS_FBC(dev)) {
719 if (HAS_PCH_SPLIT(dev)) {
720 ironlake_disable_fbc(dev);
721 I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->saveDPFC_CB_BASE);
722 } else if (IS_GM45(dev)) {
723 g4x_disable_fbc(dev);
724 I915_WRITE(DPFC_CB_BASE, dev_priv->saveDPFC_CB_BASE);
725 } else {
726 i8xx_disable_fbc(dev);
727 I915_WRITE(FBC_CFB_BASE, dev_priv->saveFBC_CFB_BASE);
728 I915_WRITE(FBC_LL_BASE, dev_priv->saveFBC_LL_BASE);
729 I915_WRITE(FBC_CONTROL2, dev_priv->saveFBC_CONTROL2);
730 I915_WRITE(FBC_CONTROL, dev_priv->saveFBC_CONTROL);
731 }
732 }
733 /* VGA state */
734 if (HAS_PCH_SPLIT(dev))
735 I915_WRITE(CPU_VGACNTRL, dev_priv->saveVGACNTRL);
736 else
737 I915_WRITE(VGACNTRL, dev_priv->saveVGACNTRL);
738 I915_WRITE(VGA0, dev_priv->saveVGA0);
739 I915_WRITE(VGA1, dev_priv->saveVGA1);
740 I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
741 POSTING_READ(VGA_PD);
742 udelay(150);
743
744 i915_restore_vga(dev);
745 }
746
747 int i915_save_state(struct drm_device *dev)
748 {
749 struct drm_i915_private *dev_priv = dev->dev_private;
750 int i;
751
752 pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
753
754 /* Hardware status page */
755 dev_priv->saveHWS = I915_READ(HWS_PGA);
756
757 i915_save_display(dev);
758
759 /* Interrupt state */
760 if (HAS_PCH_SPLIT(dev)) {
761 dev_priv->saveDEIER = I915_READ(DEIER);
762 dev_priv->saveDEIMR = I915_READ(DEIMR);
763 dev_priv->saveGTIER = I915_READ(GTIER);
764 dev_priv->saveGTIMR = I915_READ(GTIMR);
765 dev_priv->saveFDI_RXA_IMR = I915_READ(FDI_RXA_IMR);
766 dev_priv->saveFDI_RXB_IMR = I915_READ(FDI_RXB_IMR);
767 dev_priv->saveMCHBAR_RENDER_STANDBY =
768 I915_READ(MCHBAR_RENDER_STANDBY);
769 } else {
770 dev_priv->saveIER = I915_READ(IER);
771 dev_priv->saveIMR = I915_READ(IMR);
772 }
773
774 if (HAS_PCH_SPLIT(dev))
775 ironlake_disable_drps(dev);
776
777 /* Cache mode state */
778 dev_priv->saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
779
780 /* Memory Arbitration state */
781 dev_priv->saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
782
783 /* Scratch space */
784 for (i = 0; i < 16; i++) {
785 dev_priv->saveSWF0[i] = I915_READ(SWF00 + (i << 2));
786 dev_priv->saveSWF1[i] = I915_READ(SWF10 + (i << 2));
787 }
788 for (i = 0; i < 3; i++)
789 dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
790
791 /* Fences */
792 switch (INTEL_INFO(dev)->gen) {
793 case 6:
794 for (i = 0; i < 16; i++)
795 dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
796 break;
797 case 5:
798 case 4:
799 for (i = 0; i < 16; i++)
800 dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
801 break;
802 case 3:
803 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
804 for (i = 0; i < 8; i++)
805 dev_priv->saveFENCE[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
806 case 2:
807 for (i = 0; i < 8; i++)
808 dev_priv->saveFENCE[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
809 break;
810
811 }
812
813 return 0;
814 }
815
816 int i915_restore_state(struct drm_device *dev)
817 {
818 struct drm_i915_private *dev_priv = dev->dev_private;
819 int i;
820
821 pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
822
823 /* Hardware status page */
824 I915_WRITE(HWS_PGA, dev_priv->saveHWS);
825
826 /* Fences */
827 switch (INTEL_INFO(dev)->gen) {
828 case 6:
829 for (i = 0; i < 16; i++)
830 I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), dev_priv->saveFENCE[i]);
831 break;
832 case 5:
833 case 4:
834 for (i = 0; i < 16; i++)
835 I915_WRITE64(FENCE_REG_965_0 + (i * 8), dev_priv->saveFENCE[i]);
836 break;
837 case 3:
838 case 2:
839 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
840 for (i = 0; i < 8; i++)
841 I915_WRITE(FENCE_REG_945_8 + (i * 4), dev_priv->saveFENCE[i+8]);
842 for (i = 0; i < 8; i++)
843 I915_WRITE(FENCE_REG_830_0 + (i * 4), dev_priv->saveFENCE[i]);
844 break;
845 }
846
847 i915_restore_display(dev);
848
849 /* Interrupt state */
850 if (HAS_PCH_SPLIT(dev)) {
851 I915_WRITE(DEIER, dev_priv->saveDEIER);
852 I915_WRITE(DEIMR, dev_priv->saveDEIMR);
853 I915_WRITE(GTIER, dev_priv->saveGTIER);
854 I915_WRITE(GTIMR, dev_priv->saveGTIMR);
855 I915_WRITE(FDI_RXA_IMR, dev_priv->saveFDI_RXA_IMR);
856 I915_WRITE(FDI_RXB_IMR, dev_priv->saveFDI_RXB_IMR);
857 } else {
858 I915_WRITE (IER, dev_priv->saveIER);
859 I915_WRITE (IMR, dev_priv->saveIMR);
860 }
861
862 /* Clock gating state */
863 intel_init_clock_gating(dev);
864
865 if (HAS_PCH_SPLIT(dev))
866 ironlake_enable_drps(dev);
867
868 /* Cache mode state */
869 I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
870
871 /* Memory arbitration state */
872 I915_WRITE (MI_ARB_STATE, dev_priv->saveMI_ARB_STATE | 0xffff0000);
873
874 for (i = 0; i < 16; i++) {
875 I915_WRITE(SWF00 + (i << 2), dev_priv->saveSWF0[i]);
876 I915_WRITE(SWF10 + (i << 2), dev_priv->saveSWF1[i]);
877 }
878 for (i = 0; i < 3; i++)
879 I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
880
881 /* I2C state */
882 intel_i2c_reset_gmbus(dev);
883
884 return 0;
885 }
886
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