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;
196 /* Display arbitration control */
197 if (INTEL_INFO(dev)->gen <= 4)
198 dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
200 /* This is only meaningful in non-KMS mode */
201 /* Don't regfile.save them in KMS mode */
202 if (!drm_core_check_feature(dev, DRIVER_MODESET))
203 i915_save_display_reg(dev);
206 if (HAS_PCH_SPLIT(dev)) {
207 dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
208 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
209 dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
210 } else if (IS_VALLEYVIEW(dev)) {
211 dev_priv->regfile.saveBLC_HIST_CTL =
212 I915_READ(VLV_BLC_HIST_CTL(PIPE_A));
213 dev_priv->regfile.saveBLC_HIST_CTL_B =
214 I915_READ(VLV_BLC_HIST_CTL(PIPE_B));
216 dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
217 dev_priv->regfile.saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL);
218 if (IS_MOBILE(dev) && !IS_I830(dev))
219 dev_priv->regfile.saveLVDS = I915_READ(LVDS);
222 if (HAS_PCH_SPLIT(dev)) {
223 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
224 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
225 dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
226 } else if (!IS_VALLEYVIEW(dev)) {
227 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
228 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
229 dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR);
232 /* save FBC interval */
233 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
234 dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL);
236 if (!drm_core_check_feature(dev, DRIVER_MODESET))
240 static void i915_restore_display(struct drm_device *dev)
242 struct drm_i915_private *dev_priv = dev->dev_private;
243 u32 mask = 0xffffffff;
245 /* Display arbitration */
246 if (INTEL_INFO(dev)->gen <= 4)
247 I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
249 if (!drm_core_check_feature(dev, DRIVER_MODESET))
250 i915_restore_display_reg(dev);
252 if (drm_core_check_feature(dev, DRIVER_MODESET))
253 mask = ~LVDS_PORT_EN;
255 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
256 I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask);
257 else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
258 I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask);
260 if (HAS_PCH_SPLIT(dev)) {
261 I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
262 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
263 I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
264 I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
265 } else if (IS_VALLEYVIEW(dev)) {
266 I915_WRITE(VLV_BLC_HIST_CTL(PIPE_A),
267 dev_priv->regfile.saveBLC_HIST_CTL);
268 I915_WRITE(VLV_BLC_HIST_CTL(PIPE_B),
269 dev_priv->regfile.saveBLC_HIST_CTL);
271 I915_WRITE(BLC_HIST_CTL, dev_priv->regfile.saveBLC_HIST_CTL);
272 I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
273 I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
274 I915_WRITE(PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
275 I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
278 /* only restore FBC info on the platform that supports FBC*/
279 intel_disable_fbc(dev);
281 /* restore FBC interval */
282 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
283 I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL);
285 if (!drm_core_check_feature(dev, DRIVER_MODESET))
286 i915_restore_vga(dev);
288 i915_redisable_vga(dev);
291 int i915_save_state(struct drm_device *dev)
293 struct drm_i915_private *dev_priv = dev->dev_private;
296 mutex_lock(&dev->struct_mutex);
298 i915_save_display(dev);
300 if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
301 /* Interrupt state */
302 if (HAS_PCH_SPLIT(dev)) {
303 dev_priv->regfile.saveDEIER = I915_READ(DEIER);
304 dev_priv->regfile.saveDEIMR = I915_READ(DEIMR);
305 dev_priv->regfile.saveGTIER = I915_READ(GTIER);
306 dev_priv->regfile.saveGTIMR = I915_READ(GTIMR);
307 dev_priv->regfile.saveFDI_RXA_IMR = I915_READ(_FDI_RXA_IMR);
308 dev_priv->regfile.saveFDI_RXB_IMR = I915_READ(_FDI_RXB_IMR);
309 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY =
310 I915_READ(RSTDBYCTL);
311 dev_priv->regfile.savePCH_PORT_HOTPLUG = I915_READ(PCH_PORT_HOTPLUG);
313 dev_priv->regfile.saveIER = I915_READ(IER);
314 dev_priv->regfile.saveIMR = I915_READ(IMR);
318 /* Cache mode state */
319 if (INTEL_INFO(dev)->gen < 7)
320 dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
322 /* Memory Arbitration state */
323 dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
326 for (i = 0; i < 16; i++) {
327 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF00 + (i << 2));
328 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF10 + (i << 2));
330 for (i = 0; i < 3; i++)
331 dev_priv->regfile.saveSWF2[i] = I915_READ(SWF30 + (i << 2));
333 mutex_unlock(&dev->struct_mutex);
338 int i915_restore_state(struct drm_device *dev)
340 struct drm_i915_private *dev_priv = dev->dev_private;
343 mutex_lock(&dev->struct_mutex);
345 i915_gem_restore_fences(dev);
346 i915_restore_display(dev);
348 if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
349 /* Interrupt state */
350 if (HAS_PCH_SPLIT(dev)) {
351 I915_WRITE(DEIER, dev_priv->regfile.saveDEIER);
352 I915_WRITE(DEIMR, dev_priv->regfile.saveDEIMR);
353 I915_WRITE(GTIER, dev_priv->regfile.saveGTIER);
354 I915_WRITE(GTIMR, dev_priv->regfile.saveGTIMR);
355 I915_WRITE(_FDI_RXA_IMR, dev_priv->regfile.saveFDI_RXA_IMR);
356 I915_WRITE(_FDI_RXB_IMR, dev_priv->regfile.saveFDI_RXB_IMR);
357 I915_WRITE(PCH_PORT_HOTPLUG, dev_priv->regfile.savePCH_PORT_HOTPLUG);
358 I915_WRITE(RSTDBYCTL,
359 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY);
361 I915_WRITE(IER, dev_priv->regfile.saveIER);
362 I915_WRITE(IMR, dev_priv->regfile.saveIMR);
366 /* Cache mode state */
367 if (INTEL_INFO(dev)->gen < 7)
368 I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 |
371 /* Memory arbitration state */
372 I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000);
374 for (i = 0; i < 16; i++) {
375 I915_WRITE(SWF00 + (i << 2), dev_priv->regfile.saveSWF0[i]);
376 I915_WRITE(SWF10 + (i << 2), dev_priv->regfile.saveSWF1[i]);
378 for (i = 0; i < 3; i++)
379 I915_WRITE(SWF30 + (i << 2), dev_priv->regfile.saveSWF2[i]);
381 mutex_unlock(&dev->struct_mutex);
383 intel_i2c_reset(dev);