3 * Copyright 2008 (c) Intel Corporation
4 * Jesse Barnes <jbarnes@virtuousgeek.org>
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
28 #include <drm/i915_drm.h>
29 #include "intel_drv.h"
32 static u8 i915_read_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg)
34 struct drm_i915_private *dev_priv = dev->dev_private;
36 I915_WRITE8(index_port, reg);
37 return I915_READ8(data_port);
40 static u8 i915_read_ar(struct drm_device *dev, u16 st01, u8 reg, u16 palette_enable)
42 struct drm_i915_private *dev_priv = dev->dev_private;
45 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
46 return I915_READ8(VGA_AR_DATA_READ);
49 static void i915_write_ar(struct drm_device *dev, u16 st01, u8 reg, u8 val, u16 palette_enable)
51 struct drm_i915_private *dev_priv = dev->dev_private;
54 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg);
55 I915_WRITE8(VGA_AR_DATA_WRITE, val);
58 static void i915_write_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg, u8 val)
60 struct drm_i915_private *dev_priv = dev->dev_private;
62 I915_WRITE8(index_port, reg);
63 I915_WRITE8(data_port, val);
66 static void i915_save_vga(struct drm_device *dev)
68 struct drm_i915_private *dev_priv = dev->dev_private;
70 u16 cr_index, cr_data, st01;
73 dev_priv->regfile.saveVGA0 = I915_READ(VGA0);
74 dev_priv->regfile.saveVGA1 = I915_READ(VGA1);
75 dev_priv->regfile.saveVGA_PD = I915_READ(VGA_PD);
76 dev_priv->regfile.saveVGACNTRL = I915_READ(i915_vgacntrl_reg(dev));
78 /* VGA color palette registers */
79 dev_priv->regfile.saveDACMASK = I915_READ8(VGA_DACMASK);
82 dev_priv->regfile.saveMSR = I915_READ8(VGA_MSR_READ);
83 if (dev_priv->regfile.saveMSR & VGA_MSR_CGA_MODE) {
84 cr_index = VGA_CR_INDEX_CGA;
85 cr_data = VGA_CR_DATA_CGA;
88 cr_index = VGA_CR_INDEX_MDA;
89 cr_data = VGA_CR_DATA_MDA;
93 /* CRT controller regs */
94 i915_write_indexed(dev, cr_index, cr_data, 0x11,
95 i915_read_indexed(dev, cr_index, cr_data, 0x11) &
97 for (i = 0; i <= 0x24; i++)
98 dev_priv->regfile.saveCR[i] =
99 i915_read_indexed(dev, cr_index, cr_data, i);
100 /* Make sure we don't turn off CR group 0 writes */
101 dev_priv->regfile.saveCR[0x11] &= ~0x80;
103 /* Attribute controller registers */
105 dev_priv->regfile.saveAR_INDEX = I915_READ8(VGA_AR_INDEX);
106 for (i = 0; i <= 0x14; i++)
107 dev_priv->regfile.saveAR[i] = i915_read_ar(dev, st01, i, 0);
109 I915_WRITE8(VGA_AR_INDEX, dev_priv->regfile.saveAR_INDEX);
112 /* Graphics controller registers */
113 for (i = 0; i < 9; i++)
114 dev_priv->regfile.saveGR[i] =
115 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i);
117 dev_priv->regfile.saveGR[0x10] =
118 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10);
119 dev_priv->regfile.saveGR[0x11] =
120 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11);
121 dev_priv->regfile.saveGR[0x18] =
122 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18);
124 /* Sequencer registers */
125 for (i = 0; i < 8; i++)
126 dev_priv->regfile.saveSR[i] =
127 i915_read_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i);
130 static void i915_restore_vga(struct drm_device *dev)
132 struct drm_i915_private *dev_priv = dev->dev_private;
134 u16 cr_index, cr_data, st01;
137 I915_WRITE(i915_vgacntrl_reg(dev), dev_priv->regfile.saveVGACNTRL);
139 I915_WRITE(VGA0, dev_priv->regfile.saveVGA0);
140 I915_WRITE(VGA1, dev_priv->regfile.saveVGA1);
141 I915_WRITE(VGA_PD, dev_priv->regfile.saveVGA_PD);
142 POSTING_READ(VGA_PD);
146 I915_WRITE8(VGA_MSR_WRITE, dev_priv->regfile.saveMSR);
147 if (dev_priv->regfile.saveMSR & VGA_MSR_CGA_MODE) {
148 cr_index = VGA_CR_INDEX_CGA;
149 cr_data = VGA_CR_DATA_CGA;
152 cr_index = VGA_CR_INDEX_MDA;
153 cr_data = VGA_CR_DATA_MDA;
157 /* Sequencer registers, don't write SR07 */
158 for (i = 0; i < 7; i++)
159 i915_write_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i,
160 dev_priv->regfile.saveSR[i]);
162 /* CRT controller regs */
163 /* Enable CR group 0 writes */
164 i915_write_indexed(dev, cr_index, cr_data, 0x11, dev_priv->regfile.saveCR[0x11]);
165 for (i = 0; i <= 0x24; i++)
166 i915_write_indexed(dev, cr_index, cr_data, i, dev_priv->regfile.saveCR[i]);
168 /* Graphics controller regs */
169 for (i = 0; i < 9; i++)
170 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i,
171 dev_priv->regfile.saveGR[i]);
173 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10,
174 dev_priv->regfile.saveGR[0x10]);
175 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11,
176 dev_priv->regfile.saveGR[0x11]);
177 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18,
178 dev_priv->regfile.saveGR[0x18]);
180 /* Attribute controller registers */
181 I915_READ8(st01); /* switch back to index mode */
182 for (i = 0; i <= 0x14; i++)
183 i915_write_ar(dev, st01, i, dev_priv->regfile.saveAR[i], 0);
184 I915_READ8(st01); /* switch back to index mode */
185 I915_WRITE8(VGA_AR_INDEX, dev_priv->regfile.saveAR_INDEX | 0x20);
188 /* VGA color palette registers */
189 I915_WRITE8(VGA_DACMASK, dev_priv->regfile.saveDACMASK);
192 static void i915_save_display(struct drm_device *dev)
194 struct drm_i915_private *dev_priv = dev->dev_private;
197 /* Display arbitration control */
198 if (INTEL_INFO(dev)->gen <= 4)
199 dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
201 /* This is only meaningful in non-KMS mode */
202 /* Don't regfile.save them in KMS mode */
203 if (!drm_core_check_feature(dev, DRIVER_MODESET))
204 i915_save_display_reg(dev);
206 spin_lock_irqsave(&dev_priv->backlight.lock, flags);
209 if (HAS_PCH_SPLIT(dev)) {
210 dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
211 dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_PCH_CTL1);
212 dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_PCH_CTL2);
213 dev_priv->regfile.saveBLC_CPU_PWM_CTL = I915_READ(BLC_PWM_CPU_CTL);
214 dev_priv->regfile.saveBLC_CPU_PWM_CTL2 = I915_READ(BLC_PWM_CPU_CTL2);
215 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
216 dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
217 } else if (IS_VALLEYVIEW(dev)) {
218 dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
219 dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
221 dev_priv->regfile.saveBLC_PWM_CTL =
222 I915_READ(VLV_BLC_PWM_CTL(PIPE_A));
223 dev_priv->regfile.saveBLC_HIST_CTL =
224 I915_READ(VLV_BLC_HIST_CTL(PIPE_A));
225 dev_priv->regfile.saveBLC_PWM_CTL2 =
226 I915_READ(VLV_BLC_PWM_CTL2(PIPE_A));
227 dev_priv->regfile.saveBLC_PWM_CTL_B =
228 I915_READ(VLV_BLC_PWM_CTL(PIPE_B));
229 dev_priv->regfile.saveBLC_HIST_CTL_B =
230 I915_READ(VLV_BLC_HIST_CTL(PIPE_B));
231 dev_priv->regfile.saveBLC_PWM_CTL2_B =
232 I915_READ(VLV_BLC_PWM_CTL2(PIPE_B));
234 dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
235 dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
236 dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
237 dev_priv->regfile.saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL);
238 if (INTEL_INFO(dev)->gen >= 4)
239 dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
240 if (IS_MOBILE(dev) && !IS_I830(dev))
241 dev_priv->regfile.saveLVDS = I915_READ(LVDS);
244 spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
246 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
247 dev_priv->regfile.savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
249 if (HAS_PCH_SPLIT(dev)) {
250 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
251 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
252 dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
254 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
255 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
256 dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR);
259 /* Only regfile.save FBC state on the platform that supports FBC */
260 if (I915_HAS_FBC(dev)) {
261 if (HAS_PCH_SPLIT(dev)) {
262 dev_priv->regfile.saveDPFC_CB_BASE = I915_READ(ILK_DPFC_CB_BASE);
263 } else if (IS_GM45(dev)) {
264 dev_priv->regfile.saveDPFC_CB_BASE = I915_READ(DPFC_CB_BASE);
266 dev_priv->regfile.saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE);
267 dev_priv->regfile.saveFBC_LL_BASE = I915_READ(FBC_LL_BASE);
268 dev_priv->regfile.saveFBC_CONTROL2 = I915_READ(FBC_CONTROL2);
269 dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL);
273 if (!drm_core_check_feature(dev, DRIVER_MODESET))
277 static void i915_restore_display(struct drm_device *dev)
279 struct drm_i915_private *dev_priv = dev->dev_private;
280 u32 mask = 0xffffffff;
283 /* Display arbitration */
284 if (INTEL_INFO(dev)->gen <= 4)
285 I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
287 if (!drm_core_check_feature(dev, DRIVER_MODESET))
288 i915_restore_display_reg(dev);
290 spin_lock_irqsave(&dev_priv->backlight.lock, flags);
293 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev))
294 I915_WRITE(BLC_PWM_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
296 if (drm_core_check_feature(dev, DRIVER_MODESET))
297 mask = ~LVDS_PORT_EN;
299 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
300 I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask);
301 else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
302 I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask);
304 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
305 I915_WRITE(PFIT_CONTROL, dev_priv->regfile.savePFIT_CONTROL);
307 if (HAS_PCH_SPLIT(dev)) {
308 I915_WRITE(BLC_PWM_PCH_CTL1, dev_priv->regfile.saveBLC_PWM_CTL);
309 I915_WRITE(BLC_PWM_PCH_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
310 /* NOTE: BLC_PWM_CPU_CTL must be written after BLC_PWM_CPU_CTL2;
311 * otherwise we get blank eDP screen after S3 on some machines
313 I915_WRITE(BLC_PWM_CPU_CTL2, dev_priv->regfile.saveBLC_CPU_PWM_CTL2);
314 I915_WRITE(BLC_PWM_CPU_CTL, dev_priv->regfile.saveBLC_CPU_PWM_CTL);
315 I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
316 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
317 I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
318 I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
319 I915_WRITE(RSTDBYCTL,
320 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY);
321 } else if (IS_VALLEYVIEW(dev)) {
322 I915_WRITE(VLV_BLC_PWM_CTL(PIPE_A),
323 dev_priv->regfile.saveBLC_PWM_CTL);
324 I915_WRITE(VLV_BLC_HIST_CTL(PIPE_A),
325 dev_priv->regfile.saveBLC_HIST_CTL);
326 I915_WRITE(VLV_BLC_PWM_CTL2(PIPE_A),
327 dev_priv->regfile.saveBLC_PWM_CTL2);
328 I915_WRITE(VLV_BLC_PWM_CTL(PIPE_B),
329 dev_priv->regfile.saveBLC_PWM_CTL);
330 I915_WRITE(VLV_BLC_HIST_CTL(PIPE_B),
331 dev_priv->regfile.saveBLC_HIST_CTL);
332 I915_WRITE(VLV_BLC_PWM_CTL2(PIPE_B),
333 dev_priv->regfile.saveBLC_PWM_CTL2);
335 I915_WRITE(PFIT_PGM_RATIOS, dev_priv->regfile.savePFIT_PGM_RATIOS);
336 I915_WRITE(BLC_PWM_CTL, dev_priv->regfile.saveBLC_PWM_CTL);
337 I915_WRITE(BLC_HIST_CTL, dev_priv->regfile.saveBLC_HIST_CTL);
338 I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
339 I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
340 I915_WRITE(PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
341 I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
344 spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
346 /* only restore FBC info on the platform that supports FBC*/
347 intel_disable_fbc(dev);
348 if (I915_HAS_FBC(dev)) {
349 if (HAS_PCH_SPLIT(dev)) {
350 I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->regfile.saveDPFC_CB_BASE);
351 } else if (IS_GM45(dev)) {
352 I915_WRITE(DPFC_CB_BASE, dev_priv->regfile.saveDPFC_CB_BASE);
354 I915_WRITE(FBC_CFB_BASE, dev_priv->regfile.saveFBC_CFB_BASE);
355 I915_WRITE(FBC_LL_BASE, dev_priv->regfile.saveFBC_LL_BASE);
356 I915_WRITE(FBC_CONTROL2, dev_priv->regfile.saveFBC_CONTROL2);
357 I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL);
361 if (!drm_core_check_feature(dev, DRIVER_MODESET))
362 i915_restore_vga(dev);
364 i915_redisable_vga(dev);
367 int i915_save_state(struct drm_device *dev)
369 struct drm_i915_private *dev_priv = dev->dev_private;
372 if (INTEL_INFO(dev)->gen <= 4)
373 pci_read_config_byte(dev->pdev, LBB,
374 &dev_priv->regfile.saveLBB);
376 mutex_lock(&dev->struct_mutex);
378 i915_save_display(dev);
380 if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
381 /* Interrupt state */
382 if (HAS_PCH_SPLIT(dev)) {
383 dev_priv->regfile.saveDEIER = I915_READ(DEIER);
384 dev_priv->regfile.saveDEIMR = I915_READ(DEIMR);
385 dev_priv->regfile.saveGTIER = I915_READ(GTIER);
386 dev_priv->regfile.saveGTIMR = I915_READ(GTIMR);
387 dev_priv->regfile.saveFDI_RXA_IMR = I915_READ(_FDI_RXA_IMR);
388 dev_priv->regfile.saveFDI_RXB_IMR = I915_READ(_FDI_RXB_IMR);
389 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY =
390 I915_READ(RSTDBYCTL);
391 dev_priv->regfile.savePCH_PORT_HOTPLUG = I915_READ(PCH_PORT_HOTPLUG);
393 dev_priv->regfile.saveIER = I915_READ(IER);
394 dev_priv->regfile.saveIMR = I915_READ(IMR);
398 intel_disable_gt_powersave(dev);
400 /* Cache mode state */
401 if (INTEL_INFO(dev)->gen < 7)
402 dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
404 /* Memory Arbitration state */
405 dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
408 for (i = 0; i < 16; i++) {
409 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF00 + (i << 2));
410 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF10 + (i << 2));
412 for (i = 0; i < 3; i++)
413 dev_priv->regfile.saveSWF2[i] = I915_READ(SWF30 + (i << 2));
415 mutex_unlock(&dev->struct_mutex);
420 int i915_restore_state(struct drm_device *dev)
422 struct drm_i915_private *dev_priv = dev->dev_private;
425 if (INTEL_INFO(dev)->gen <= 4)
426 pci_write_config_byte(dev->pdev, LBB,
427 dev_priv->regfile.saveLBB);
429 mutex_lock(&dev->struct_mutex);
431 i915_gem_restore_fences(dev);
432 i915_restore_display(dev);
434 if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
435 /* Interrupt state */
436 if (HAS_PCH_SPLIT(dev)) {
437 I915_WRITE(DEIER, dev_priv->regfile.saveDEIER);
438 I915_WRITE(DEIMR, dev_priv->regfile.saveDEIMR);
439 I915_WRITE(GTIER, dev_priv->regfile.saveGTIER);
440 I915_WRITE(GTIMR, dev_priv->regfile.saveGTIMR);
441 I915_WRITE(_FDI_RXA_IMR, dev_priv->regfile.saveFDI_RXA_IMR);
442 I915_WRITE(_FDI_RXB_IMR, dev_priv->regfile.saveFDI_RXB_IMR);
443 I915_WRITE(PCH_PORT_HOTPLUG, dev_priv->regfile.savePCH_PORT_HOTPLUG);
445 I915_WRITE(IER, dev_priv->regfile.saveIER);
446 I915_WRITE(IMR, dev_priv->regfile.saveIMR);
450 /* Cache mode state */
451 if (INTEL_INFO(dev)->gen < 7)
452 I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 |
455 /* Memory arbitration state */
456 I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000);
458 for (i = 0; i < 16; i++) {
459 I915_WRITE(SWF00 + (i << 2), dev_priv->regfile.saveSWF0[i]);
460 I915_WRITE(SWF10 + (i << 2), dev_priv->regfile.saveSWF1[i]);
462 for (i = 0; i < 3; i++)
463 I915_WRITE(SWF30 + (i << 2), dev_priv->regfile.saveSWF2[i]);
465 mutex_unlock(&dev->struct_mutex);
467 intel_i2c_reset(dev);