i915_suspend.c revision 1.1
1 /* 2 * 3 * Copyright 2008 (c) Intel Corporation 4 * Jesse Barnes <jbarnes (at) 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 <drm/drmP.h> 28 #include <drm/i915_drm.h> 29 #include "intel_drv.h" 30 #include "i915_reg.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 /* On IVB, 3rd pipe shares PLL with another one */ 38 if (pipe > 1) 39 return false; 40 41 if (HAS_PCH_SPLIT(dev)) 42 dpll_reg = _PCH_DPLL(pipe); 43 else 44 dpll_reg = (pipe == PIPE_A) ? _DPLL_A : _DPLL_B; 45 46 return (I915_READ(dpll_reg) & DPLL_VCO_ENABLE); 47 } 48 49 static void i915_save_palette(struct drm_device *dev, enum pipe pipe) 50 { 51 struct drm_i915_private *dev_priv = dev->dev_private; 52 unsigned long reg = (pipe == PIPE_A ? _PALETTE_A : _PALETTE_B); 53 u32 *array; 54 int i; 55 56 if (!i915_pipe_enabled(dev, pipe)) 57 return; 58 59 if (HAS_PCH_SPLIT(dev)) 60 reg = (pipe == PIPE_A) ? _LGC_PALETTE_A : _LGC_PALETTE_B; 61 62 if (pipe == PIPE_A) 63 array = dev_priv->regfile.save_palette_a; 64 else 65 array = dev_priv->regfile.save_palette_b; 66 67 for (i = 0; i < 256; i++) 68 array[i] = I915_READ(reg + (i << 2)); 69 } 70 71 static void i915_restore_palette(struct drm_device *dev, enum pipe pipe) 72 { 73 struct drm_i915_private *dev_priv = dev->dev_private; 74 unsigned long reg = (pipe == PIPE_A ? _PALETTE_A : _PALETTE_B); 75 u32 *array; 76 int i; 77 78 if (!i915_pipe_enabled(dev, pipe)) 79 return; 80 81 if (HAS_PCH_SPLIT(dev)) 82 reg = (pipe == PIPE_A) ? _LGC_PALETTE_A : _LGC_PALETTE_B; 83 84 if (pipe == PIPE_A) 85 array = dev_priv->regfile.save_palette_a; 86 else 87 array = dev_priv->regfile.save_palette_b; 88 89 for (i = 0; i < 256; i++) 90 I915_WRITE(reg + (i << 2), array[i]); 91 } 92 93 static u8 i915_read_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg) 94 { 95 struct drm_i915_private *dev_priv = dev->dev_private; 96 97 I915_WRITE8(index_port, reg); 98 return I915_READ8(data_port); 99 } 100 101 static u8 i915_read_ar(struct drm_device *dev, u16 st01, u8 reg, u16 palette_enable) 102 { 103 struct drm_i915_private *dev_priv = dev->dev_private; 104 105 I915_READ8(st01); 106 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg); 107 return I915_READ8(VGA_AR_DATA_READ); 108 } 109 110 static void i915_write_ar(struct drm_device *dev, u16 st01, u8 reg, u8 val, u16 palette_enable) 111 { 112 struct drm_i915_private *dev_priv = dev->dev_private; 113 114 I915_READ8(st01); 115 I915_WRITE8(VGA_AR_INDEX, palette_enable | reg); 116 I915_WRITE8(VGA_AR_DATA_WRITE, val); 117 } 118 119 static void i915_write_indexed(struct drm_device *dev, u16 index_port, u16 data_port, u8 reg, u8 val) 120 { 121 struct drm_i915_private *dev_priv = dev->dev_private; 122 123 I915_WRITE8(index_port, reg); 124 I915_WRITE8(data_port, val); 125 } 126 127 static void i915_save_vga(struct drm_device *dev) 128 { 129 struct drm_i915_private *dev_priv = dev->dev_private; 130 int i; 131 u16 cr_index, cr_data, st01; 132 133 /* VGA color palette registers */ 134 dev_priv->regfile.saveDACMASK = I915_READ8(VGA_DACMASK); 135 136 /* MSR bits */ 137 dev_priv->regfile.saveMSR = I915_READ8(VGA_MSR_READ); 138 if (dev_priv->regfile.saveMSR & VGA_MSR_CGA_MODE) { 139 cr_index = VGA_CR_INDEX_CGA; 140 cr_data = VGA_CR_DATA_CGA; 141 st01 = VGA_ST01_CGA; 142 } else { 143 cr_index = VGA_CR_INDEX_MDA; 144 cr_data = VGA_CR_DATA_MDA; 145 st01 = VGA_ST01_MDA; 146 } 147 148 /* CRT controller regs */ 149 i915_write_indexed(dev, cr_index, cr_data, 0x11, 150 i915_read_indexed(dev, cr_index, cr_data, 0x11) & 151 (~0x80)); 152 for (i = 0; i <= 0x24; i++) 153 dev_priv->regfile.saveCR[i] = 154 i915_read_indexed(dev, cr_index, cr_data, i); 155 /* Make sure we don't turn off CR group 0 writes */ 156 dev_priv->regfile.saveCR[0x11] &= ~0x80; 157 158 /* Attribute controller registers */ 159 I915_READ8(st01); 160 dev_priv->regfile.saveAR_INDEX = I915_READ8(VGA_AR_INDEX); 161 for (i = 0; i <= 0x14; i++) 162 dev_priv->regfile.saveAR[i] = i915_read_ar(dev, st01, i, 0); 163 I915_READ8(st01); 164 I915_WRITE8(VGA_AR_INDEX, dev_priv->regfile.saveAR_INDEX); 165 I915_READ8(st01); 166 167 /* Graphics controller registers */ 168 for (i = 0; i < 9; i++) 169 dev_priv->regfile.saveGR[i] = 170 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i); 171 172 dev_priv->regfile.saveGR[0x10] = 173 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10); 174 dev_priv->regfile.saveGR[0x11] = 175 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11); 176 dev_priv->regfile.saveGR[0x18] = 177 i915_read_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18); 178 179 /* Sequencer registers */ 180 for (i = 0; i < 8; i++) 181 dev_priv->regfile.saveSR[i] = 182 i915_read_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i); 183 } 184 185 static void i915_restore_vga(struct drm_device *dev) 186 { 187 struct drm_i915_private *dev_priv = dev->dev_private; 188 int i; 189 u16 cr_index, cr_data, st01; 190 191 /* MSR bits */ 192 I915_WRITE8(VGA_MSR_WRITE, dev_priv->regfile.saveMSR); 193 if (dev_priv->regfile.saveMSR & VGA_MSR_CGA_MODE) { 194 cr_index = VGA_CR_INDEX_CGA; 195 cr_data = VGA_CR_DATA_CGA; 196 st01 = VGA_ST01_CGA; 197 } else { 198 cr_index = VGA_CR_INDEX_MDA; 199 cr_data = VGA_CR_DATA_MDA; 200 st01 = VGA_ST01_MDA; 201 } 202 203 /* Sequencer registers, don't write SR07 */ 204 for (i = 0; i < 7; i++) 205 i915_write_indexed(dev, VGA_SR_INDEX, VGA_SR_DATA, i, 206 dev_priv->regfile.saveSR[i]); 207 208 /* CRT controller regs */ 209 /* Enable CR group 0 writes */ 210 i915_write_indexed(dev, cr_index, cr_data, 0x11, dev_priv->regfile.saveCR[0x11]); 211 for (i = 0; i <= 0x24; i++) 212 i915_write_indexed(dev, cr_index, cr_data, i, dev_priv->regfile.saveCR[i]); 213 214 /* Graphics controller regs */ 215 for (i = 0; i < 9; i++) 216 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, i, 217 dev_priv->regfile.saveGR[i]); 218 219 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x10, 220 dev_priv->regfile.saveGR[0x10]); 221 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x11, 222 dev_priv->regfile.saveGR[0x11]); 223 i915_write_indexed(dev, VGA_GR_INDEX, VGA_GR_DATA, 0x18, 224 dev_priv->regfile.saveGR[0x18]); 225 226 /* Attribute controller registers */ 227 I915_READ8(st01); /* switch back to index mode */ 228 for (i = 0; i <= 0x14; i++) 229 i915_write_ar(dev, st01, i, dev_priv->regfile.saveAR[i], 0); 230 I915_READ8(st01); /* switch back to index mode */ 231 I915_WRITE8(VGA_AR_INDEX, dev_priv->regfile.saveAR_INDEX | 0x20); 232 I915_READ8(st01); 233 234 /* VGA color palette registers */ 235 I915_WRITE8(VGA_DACMASK, dev_priv->regfile.saveDACMASK); 236 } 237 238 static void i915_save_modeset_reg(struct drm_device *dev) 239 { 240 struct drm_i915_private *dev_priv = dev->dev_private; 241 int i; 242 243 if (drm_core_check_feature(dev, DRIVER_MODESET)) 244 return; 245 246 /* Cursor state */ 247 dev_priv->regfile.saveCURACNTR = I915_READ(_CURACNTR); 248 dev_priv->regfile.saveCURAPOS = I915_READ(_CURAPOS); 249 dev_priv->regfile.saveCURABASE = I915_READ(_CURABASE); 250 dev_priv->regfile.saveCURBCNTR = I915_READ(_CURBCNTR); 251 dev_priv->regfile.saveCURBPOS = I915_READ(_CURBPOS); 252 dev_priv->regfile.saveCURBBASE = I915_READ(_CURBBASE); 253 if (IS_GEN2(dev)) 254 dev_priv->regfile.saveCURSIZE = I915_READ(CURSIZE); 255 256 if (HAS_PCH_SPLIT(dev)) { 257 dev_priv->regfile.savePCH_DREF_CONTROL = I915_READ(PCH_DREF_CONTROL); 258 dev_priv->regfile.saveDISP_ARB_CTL = I915_READ(DISP_ARB_CTL); 259 } 260 261 /* Pipe & plane A info */ 262 dev_priv->regfile.savePIPEACONF = I915_READ(_PIPEACONF); 263 dev_priv->regfile.savePIPEASRC = I915_READ(_PIPEASRC); 264 if (HAS_PCH_SPLIT(dev)) { 265 dev_priv->regfile.saveFPA0 = I915_READ(_PCH_FPA0); 266 dev_priv->regfile.saveFPA1 = I915_READ(_PCH_FPA1); 267 dev_priv->regfile.saveDPLL_A = I915_READ(_PCH_DPLL_A); 268 } else { 269 dev_priv->regfile.saveFPA0 = I915_READ(_FPA0); 270 dev_priv->regfile.saveFPA1 = I915_READ(_FPA1); 271 dev_priv->regfile.saveDPLL_A = I915_READ(_DPLL_A); 272 } 273 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) 274 dev_priv->regfile.saveDPLL_A_MD = I915_READ(_DPLL_A_MD); 275 dev_priv->regfile.saveHTOTAL_A = I915_READ(_HTOTAL_A); 276 dev_priv->regfile.saveHBLANK_A = I915_READ(_HBLANK_A); 277 dev_priv->regfile.saveHSYNC_A = I915_READ(_HSYNC_A); 278 dev_priv->regfile.saveVTOTAL_A = I915_READ(_VTOTAL_A); 279 dev_priv->regfile.saveVBLANK_A = I915_READ(_VBLANK_A); 280 dev_priv->regfile.saveVSYNC_A = I915_READ(_VSYNC_A); 281 if (!HAS_PCH_SPLIT(dev)) 282 dev_priv->regfile.saveBCLRPAT_A = I915_READ(_BCLRPAT_A); 283 284 if (HAS_PCH_SPLIT(dev)) { 285 dev_priv->regfile.savePIPEA_DATA_M1 = I915_READ(_PIPEA_DATA_M1); 286 dev_priv->regfile.savePIPEA_DATA_N1 = I915_READ(_PIPEA_DATA_N1); 287 dev_priv->regfile.savePIPEA_LINK_M1 = I915_READ(_PIPEA_LINK_M1); 288 dev_priv->regfile.savePIPEA_LINK_N1 = I915_READ(_PIPEA_LINK_N1); 289 290 dev_priv->regfile.saveFDI_TXA_CTL = I915_READ(_FDI_TXA_CTL); 291 dev_priv->regfile.saveFDI_RXA_CTL = I915_READ(_FDI_RXA_CTL); 292 293 dev_priv->regfile.savePFA_CTL_1 = I915_READ(_PFA_CTL_1); 294 dev_priv->regfile.savePFA_WIN_SZ = I915_READ(_PFA_WIN_SZ); 295 dev_priv->regfile.savePFA_WIN_POS = I915_READ(_PFA_WIN_POS); 296 297 dev_priv->regfile.saveTRANSACONF = I915_READ(_TRANSACONF); 298 dev_priv->regfile.saveTRANS_HTOTAL_A = I915_READ(_TRANS_HTOTAL_A); 299 dev_priv->regfile.saveTRANS_HBLANK_A = I915_READ(_TRANS_HBLANK_A); 300 dev_priv->regfile.saveTRANS_HSYNC_A = I915_READ(_TRANS_HSYNC_A); 301 dev_priv->regfile.saveTRANS_VTOTAL_A = I915_READ(_TRANS_VTOTAL_A); 302 dev_priv->regfile.saveTRANS_VBLANK_A = I915_READ(_TRANS_VBLANK_A); 303 dev_priv->regfile.saveTRANS_VSYNC_A = I915_READ(_TRANS_VSYNC_A); 304 } 305 306 dev_priv->regfile.saveDSPACNTR = I915_READ(_DSPACNTR); 307 dev_priv->regfile.saveDSPASTRIDE = I915_READ(_DSPASTRIDE); 308 dev_priv->regfile.saveDSPASIZE = I915_READ(_DSPASIZE); 309 dev_priv->regfile.saveDSPAPOS = I915_READ(_DSPAPOS); 310 dev_priv->regfile.saveDSPAADDR = I915_READ(_DSPAADDR); 311 if (INTEL_INFO(dev)->gen >= 4) { 312 dev_priv->regfile.saveDSPASURF = I915_READ(_DSPASURF); 313 dev_priv->regfile.saveDSPATILEOFF = I915_READ(_DSPATILEOFF); 314 } 315 i915_save_palette(dev, PIPE_A); 316 dev_priv->regfile.savePIPEASTAT = I915_READ(_PIPEASTAT); 317 318 /* Pipe & plane B info */ 319 dev_priv->regfile.savePIPEBCONF = I915_READ(_PIPEBCONF); 320 dev_priv->regfile.savePIPEBSRC = I915_READ(_PIPEBSRC); 321 if (HAS_PCH_SPLIT(dev)) { 322 dev_priv->regfile.saveFPB0 = I915_READ(_PCH_FPB0); 323 dev_priv->regfile.saveFPB1 = I915_READ(_PCH_FPB1); 324 dev_priv->regfile.saveDPLL_B = I915_READ(_PCH_DPLL_B); 325 } else { 326 dev_priv->regfile.saveFPB0 = I915_READ(_FPB0); 327 dev_priv->regfile.saveFPB1 = I915_READ(_FPB1); 328 dev_priv->regfile.saveDPLL_B = I915_READ(_DPLL_B); 329 } 330 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) 331 dev_priv->regfile.saveDPLL_B_MD = I915_READ(_DPLL_B_MD); 332 dev_priv->regfile.saveHTOTAL_B = I915_READ(_HTOTAL_B); 333 dev_priv->regfile.saveHBLANK_B = I915_READ(_HBLANK_B); 334 dev_priv->regfile.saveHSYNC_B = I915_READ(_HSYNC_B); 335 dev_priv->regfile.saveVTOTAL_B = I915_READ(_VTOTAL_B); 336 dev_priv->regfile.saveVBLANK_B = I915_READ(_VBLANK_B); 337 dev_priv->regfile.saveVSYNC_B = I915_READ(_VSYNC_B); 338 if (!HAS_PCH_SPLIT(dev)) 339 dev_priv->regfile.saveBCLRPAT_B = I915_READ(_BCLRPAT_B); 340 341 if (HAS_PCH_SPLIT(dev)) { 342 dev_priv->regfile.savePIPEB_DATA_M1 = I915_READ(_PIPEB_DATA_M1); 343 dev_priv->regfile.savePIPEB_DATA_N1 = I915_READ(_PIPEB_DATA_N1); 344 dev_priv->regfile.savePIPEB_LINK_M1 = I915_READ(_PIPEB_LINK_M1); 345 dev_priv->regfile.savePIPEB_LINK_N1 = I915_READ(_PIPEB_LINK_N1); 346 347 dev_priv->regfile.saveFDI_TXB_CTL = I915_READ(_FDI_TXB_CTL); 348 dev_priv->regfile.saveFDI_RXB_CTL = I915_READ(_FDI_RXB_CTL); 349 350 dev_priv->regfile.savePFB_CTL_1 = I915_READ(_PFB_CTL_1); 351 dev_priv->regfile.savePFB_WIN_SZ = I915_READ(_PFB_WIN_SZ); 352 dev_priv->regfile.savePFB_WIN_POS = I915_READ(_PFB_WIN_POS); 353 354 dev_priv->regfile.saveTRANSBCONF = I915_READ(_TRANSBCONF); 355 dev_priv->regfile.saveTRANS_HTOTAL_B = I915_READ(_TRANS_HTOTAL_B); 356 dev_priv->regfile.saveTRANS_HBLANK_B = I915_READ(_TRANS_HBLANK_B); 357 dev_priv->regfile.saveTRANS_HSYNC_B = I915_READ(_TRANS_HSYNC_B); 358 dev_priv->regfile.saveTRANS_VTOTAL_B = I915_READ(_TRANS_VTOTAL_B); 359 dev_priv->regfile.saveTRANS_VBLANK_B = I915_READ(_TRANS_VBLANK_B); 360 dev_priv->regfile.saveTRANS_VSYNC_B = I915_READ(_TRANS_VSYNC_B); 361 } 362 363 dev_priv->regfile.saveDSPBCNTR = I915_READ(_DSPBCNTR); 364 dev_priv->regfile.saveDSPBSTRIDE = I915_READ(_DSPBSTRIDE); 365 dev_priv->regfile.saveDSPBSIZE = I915_READ(_DSPBSIZE); 366 dev_priv->regfile.saveDSPBPOS = I915_READ(_DSPBPOS); 367 dev_priv->regfile.saveDSPBADDR = I915_READ(_DSPBADDR); 368 if (INTEL_INFO(dev)->gen >= 4) { 369 dev_priv->regfile.saveDSPBSURF = I915_READ(_DSPBSURF); 370 dev_priv->regfile.saveDSPBTILEOFF = I915_READ(_DSPBTILEOFF); 371 } 372 i915_save_palette(dev, PIPE_B); 373 dev_priv->regfile.savePIPEBSTAT = I915_READ(_PIPEBSTAT); 374 375 /* Fences */ 376 switch (INTEL_INFO(dev)->gen) { 377 case 7: 378 case 6: 379 for (i = 0; i < 16; i++) 380 dev_priv->regfile.saveFENCE[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8)); 381 break; 382 case 5: 383 case 4: 384 for (i = 0; i < 16; i++) 385 dev_priv->regfile.saveFENCE[i] = I915_READ64(FENCE_REG_965_0 + (i * 8)); 386 break; 387 case 3: 388 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) 389 for (i = 0; i < 8; i++) 390 dev_priv->regfile.saveFENCE[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4)); 391 case 2: 392 for (i = 0; i < 8; i++) 393 dev_priv->regfile.saveFENCE[i] = I915_READ(FENCE_REG_830_0 + (i * 4)); 394 break; 395 } 396 397 /* CRT state */ 398 if (HAS_PCH_SPLIT(dev)) 399 dev_priv->regfile.saveADPA = I915_READ(PCH_ADPA); 400 else 401 dev_priv->regfile.saveADPA = I915_READ(ADPA); 402 403 return; 404 } 405 406 static void i915_restore_modeset_reg(struct drm_device *dev) 407 { 408 struct drm_i915_private *dev_priv = dev->dev_private; 409 int dpll_a_reg, fpa0_reg, fpa1_reg; 410 int dpll_b_reg, fpb0_reg, fpb1_reg; 411 int i; 412 413 if (drm_core_check_feature(dev, DRIVER_MODESET)) 414 return; 415 416 /* Fences */ 417 switch (INTEL_INFO(dev)->gen) { 418 case 7: 419 case 6: 420 for (i = 0; i < 16; i++) 421 I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), dev_priv->regfile.saveFENCE[i]); 422 break; 423 case 5: 424 case 4: 425 for (i = 0; i < 16; i++) 426 I915_WRITE64(FENCE_REG_965_0 + (i * 8), dev_priv->regfile.saveFENCE[i]); 427 break; 428 case 3: 429 case 2: 430 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) 431 for (i = 0; i < 8; i++) 432 I915_WRITE(FENCE_REG_945_8 + (i * 4), dev_priv->regfile.saveFENCE[i+8]); 433 for (i = 0; i < 8; i++) 434 I915_WRITE(FENCE_REG_830_0 + (i * 4), dev_priv->regfile.saveFENCE[i]); 435 break; 436 } 437 438 439 if (HAS_PCH_SPLIT(dev)) { 440 dpll_a_reg = _PCH_DPLL_A; 441 dpll_b_reg = _PCH_DPLL_B; 442 fpa0_reg = _PCH_FPA0; 443 fpb0_reg = _PCH_FPB0; 444 fpa1_reg = _PCH_FPA1; 445 fpb1_reg = _PCH_FPB1; 446 } else { 447 dpll_a_reg = _DPLL_A; 448 dpll_b_reg = _DPLL_B; 449 fpa0_reg = _FPA0; 450 fpb0_reg = _FPB0; 451 fpa1_reg = _FPA1; 452 fpb1_reg = _FPB1; 453 } 454 455 if (HAS_PCH_SPLIT(dev)) { 456 I915_WRITE(PCH_DREF_CONTROL, dev_priv->regfile.savePCH_DREF_CONTROL); 457 I915_WRITE(DISP_ARB_CTL, dev_priv->regfile.saveDISP_ARB_CTL); 458 } 459 460 /* Pipe & plane A info */ 461 /* Prime the clock */ 462 if (dev_priv->regfile.saveDPLL_A & DPLL_VCO_ENABLE) { 463 I915_WRITE(dpll_a_reg, dev_priv->regfile.saveDPLL_A & 464 ~DPLL_VCO_ENABLE); 465 POSTING_READ(dpll_a_reg); 466 udelay(150); 467 } 468 I915_WRITE(fpa0_reg, dev_priv->regfile.saveFPA0); 469 I915_WRITE(fpa1_reg, dev_priv->regfile.saveFPA1); 470 /* Actually enable it */ 471 I915_WRITE(dpll_a_reg, dev_priv->regfile.saveDPLL_A); 472 POSTING_READ(dpll_a_reg); 473 udelay(150); 474 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) { 475 I915_WRITE(_DPLL_A_MD, dev_priv->regfile.saveDPLL_A_MD); 476 POSTING_READ(_DPLL_A_MD); 477 } 478 udelay(150); 479 480 /* Restore mode */ 481 I915_WRITE(_HTOTAL_A, dev_priv->regfile.saveHTOTAL_A); 482 I915_WRITE(_HBLANK_A, dev_priv->regfile.saveHBLANK_A); 483 I915_WRITE(_HSYNC_A, dev_priv->regfile.saveHSYNC_A); 484 I915_WRITE(_VTOTAL_A, dev_priv->regfile.saveVTOTAL_A); 485 I915_WRITE(_VBLANK_A, dev_priv->regfile.saveVBLANK_A); 486 I915_WRITE(_VSYNC_A, dev_priv->regfile.saveVSYNC_A); 487 if (!HAS_PCH_SPLIT(dev)) 488 I915_WRITE(_BCLRPAT_A, dev_priv->regfile.saveBCLRPAT_A); 489 490 if (HAS_PCH_SPLIT(dev)) { 491 I915_WRITE(_PIPEA_DATA_M1, dev_priv->regfile.savePIPEA_DATA_M1); 492 I915_WRITE(_PIPEA_DATA_N1, dev_priv->regfile.savePIPEA_DATA_N1); 493 I915_WRITE(_PIPEA_LINK_M1, dev_priv->regfile.savePIPEA_LINK_M1); 494 I915_WRITE(_PIPEA_LINK_N1, dev_priv->regfile.savePIPEA_LINK_N1); 495 496 I915_WRITE(_FDI_RXA_CTL, dev_priv->regfile.saveFDI_RXA_CTL); 497 I915_WRITE(_FDI_TXA_CTL, dev_priv->regfile.saveFDI_TXA_CTL); 498 499 I915_WRITE(_PFA_CTL_1, dev_priv->regfile.savePFA_CTL_1); 500 I915_WRITE(_PFA_WIN_SZ, dev_priv->regfile.savePFA_WIN_SZ); 501 I915_WRITE(_PFA_WIN_POS, dev_priv->regfile.savePFA_WIN_POS); 502 503 I915_WRITE(_TRANSACONF, dev_priv->regfile.saveTRANSACONF); 504 I915_WRITE(_TRANS_HTOTAL_A, dev_priv->regfile.saveTRANS_HTOTAL_A); 505 I915_WRITE(_TRANS_HBLANK_A, dev_priv->regfile.saveTRANS_HBLANK_A); 506 I915_WRITE(_TRANS_HSYNC_A, dev_priv->regfile.saveTRANS_HSYNC_A); 507 I915_WRITE(_TRANS_VTOTAL_A, dev_priv->regfile.saveTRANS_VTOTAL_A); 508 I915_WRITE(_TRANS_VBLANK_A, dev_priv->regfile.saveTRANS_VBLANK_A); 509 I915_WRITE(_TRANS_VSYNC_A, dev_priv->regfile.saveTRANS_VSYNC_A); 510 } 511 512 /* Restore plane info */ 513 I915_WRITE(_DSPASIZE, dev_priv->regfile.saveDSPASIZE); 514 I915_WRITE(_DSPAPOS, dev_priv->regfile.saveDSPAPOS); 515 I915_WRITE(_PIPEASRC, dev_priv->regfile.savePIPEASRC); 516 I915_WRITE(_DSPAADDR, dev_priv->regfile.saveDSPAADDR); 517 I915_WRITE(_DSPASTRIDE, dev_priv->regfile.saveDSPASTRIDE); 518 if (INTEL_INFO(dev)->gen >= 4) { 519 I915_WRITE(_DSPASURF, dev_priv->regfile.saveDSPASURF); 520 I915_WRITE(_DSPATILEOFF, dev_priv->regfile.saveDSPATILEOFF); 521 } 522 523 I915_WRITE(_PIPEACONF, dev_priv->regfile.savePIPEACONF); 524 525 i915_restore_palette(dev, PIPE_A); 526 /* Enable the plane */ 527 I915_WRITE(_DSPACNTR, dev_priv->regfile.saveDSPACNTR); 528 I915_WRITE(_DSPAADDR, I915_READ(_DSPAADDR)); 529 530 /* Pipe & plane B info */ 531 if (dev_priv->regfile.saveDPLL_B & DPLL_VCO_ENABLE) { 532 I915_WRITE(dpll_b_reg, dev_priv->regfile.saveDPLL_B & 533 ~DPLL_VCO_ENABLE); 534 POSTING_READ(dpll_b_reg); 535 udelay(150); 536 } 537 I915_WRITE(fpb0_reg, dev_priv->regfile.saveFPB0); 538 I915_WRITE(fpb1_reg, dev_priv->regfile.saveFPB1); 539 /* Actually enable it */ 540 I915_WRITE(dpll_b_reg, dev_priv->regfile.saveDPLL_B); 541 POSTING_READ(dpll_b_reg); 542 udelay(150); 543 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) { 544 I915_WRITE(_DPLL_B_MD, dev_priv->regfile.saveDPLL_B_MD); 545 POSTING_READ(_DPLL_B_MD); 546 } 547 udelay(150); 548 549 /* Restore mode */ 550 I915_WRITE(_HTOTAL_B, dev_priv->regfile.saveHTOTAL_B); 551 I915_WRITE(_HBLANK_B, dev_priv->regfile.saveHBLANK_B); 552 I915_WRITE(_HSYNC_B, dev_priv->regfile.saveHSYNC_B); 553 I915_WRITE(_VTOTAL_B, dev_priv->regfile.saveVTOTAL_B); 554 I915_WRITE(_VBLANK_B, dev_priv->regfile.saveVBLANK_B); 555 I915_WRITE(_VSYNC_B, dev_priv->regfile.saveVSYNC_B); 556 if (!HAS_PCH_SPLIT(dev)) 557 I915_WRITE(_BCLRPAT_B, dev_priv->regfile.saveBCLRPAT_B); 558 559 if (HAS_PCH_SPLIT(dev)) { 560 I915_WRITE(_PIPEB_DATA_M1, dev_priv->regfile.savePIPEB_DATA_M1); 561 I915_WRITE(_PIPEB_DATA_N1, dev_priv->regfile.savePIPEB_DATA_N1); 562 I915_WRITE(_PIPEB_LINK_M1, dev_priv->regfile.savePIPEB_LINK_M1); 563 I915_WRITE(_PIPEB_LINK_N1, dev_priv->regfile.savePIPEB_LINK_N1); 564 565 I915_WRITE(_FDI_RXB_CTL, dev_priv->regfile.saveFDI_RXB_CTL); 566 I915_WRITE(_FDI_TXB_CTL, dev_priv->regfile.saveFDI_TXB_CTL); 567 568 I915_WRITE(_PFB_CTL_1, dev_priv->regfile.savePFB_CTL_1); 569 I915_WRITE(_PFB_WIN_SZ, dev_priv->regfile.savePFB_WIN_SZ); 570 I915_WRITE(_PFB_WIN_POS, dev_priv->regfile.savePFB_WIN_POS); 571 572 I915_WRITE(_TRANSBCONF, dev_priv->regfile.saveTRANSBCONF); 573 I915_WRITE(_TRANS_HTOTAL_B, dev_priv->regfile.saveTRANS_HTOTAL_B); 574 I915_WRITE(_TRANS_HBLANK_B, dev_priv->regfile.saveTRANS_HBLANK_B); 575 I915_WRITE(_TRANS_HSYNC_B, dev_priv->regfile.saveTRANS_HSYNC_B); 576 I915_WRITE(_TRANS_VTOTAL_B, dev_priv->regfile.saveTRANS_VTOTAL_B); 577 I915_WRITE(_TRANS_VBLANK_B, dev_priv->regfile.saveTRANS_VBLANK_B); 578 I915_WRITE(_TRANS_VSYNC_B, dev_priv->regfile.saveTRANS_VSYNC_B); 579 } 580 581 /* Restore plane info */ 582 I915_WRITE(_DSPBSIZE, dev_priv->regfile.saveDSPBSIZE); 583 I915_WRITE(_DSPBPOS, dev_priv->regfile.saveDSPBPOS); 584 I915_WRITE(_PIPEBSRC, dev_priv->regfile.savePIPEBSRC); 585 I915_WRITE(_DSPBADDR, dev_priv->regfile.saveDSPBADDR); 586 I915_WRITE(_DSPBSTRIDE, dev_priv->regfile.saveDSPBSTRIDE); 587 if (INTEL_INFO(dev)->gen >= 4) { 588 I915_WRITE(_DSPBSURF, dev_priv->regfile.saveDSPBSURF); 589 I915_WRITE(_DSPBTILEOFF, dev_priv->regfile.saveDSPBTILEOFF); 590 } 591 592 I915_WRITE(_PIPEBCONF, dev_priv->regfile.savePIPEBCONF); 593 594 i915_restore_palette(dev, PIPE_B); 595 /* Enable the plane */ 596 I915_WRITE(_DSPBCNTR, dev_priv->regfile.saveDSPBCNTR); 597 I915_WRITE(_DSPBADDR, I915_READ(_DSPBADDR)); 598 599 /* Cursor state */ 600 I915_WRITE(_CURAPOS, dev_priv->regfile.saveCURAPOS); 601 I915_WRITE(_CURACNTR, dev_priv->regfile.saveCURACNTR); 602 I915_WRITE(_CURABASE, dev_priv->regfile.saveCURABASE); 603 I915_WRITE(_CURBPOS, dev_priv->regfile.saveCURBPOS); 604 I915_WRITE(_CURBCNTR, dev_priv->regfile.saveCURBCNTR); 605 I915_WRITE(_CURBBASE, dev_priv->regfile.saveCURBBASE); 606 if (IS_GEN2(dev)) 607 I915_WRITE(CURSIZE, dev_priv->regfile.saveCURSIZE); 608 609 /* CRT state */ 610 if (HAS_PCH_SPLIT(dev)) 611 I915_WRITE(PCH_ADPA, dev_priv->regfile.saveADPA); 612 else 613 I915_WRITE(ADPA, dev_priv->regfile.saveADPA); 614 615 return; 616 } 617 618 static void i915_save_display(struct drm_device *dev) 619 { 620 struct drm_i915_private *dev_priv = dev->dev_private; 621 622 /* Display arbitration control */ 623 dev_priv->regfile.saveDSPARB = I915_READ(DSPARB); 624 625 /* This is only meaningful in non-KMS mode */ 626 /* Don't regfile.save them in KMS mode */ 627 i915_save_modeset_reg(dev); 628 629 /* LVDS state */ 630 if (HAS_PCH_SPLIT(dev)) { 631 dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL); 632 dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_PCH_CTL1); 633 dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_PCH_CTL2); 634 dev_priv->regfile.saveBLC_CPU_PWM_CTL = I915_READ(BLC_PWM_CPU_CTL); 635 dev_priv->regfile.saveBLC_CPU_PWM_CTL2 = I915_READ(BLC_PWM_CPU_CTL2); 636 dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS); 637 } else { 638 dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL); 639 dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS); 640 dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); 641 dev_priv->regfile.saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL); 642 if (INTEL_INFO(dev)->gen >= 4) 643 dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2); 644 if (IS_MOBILE(dev) && !IS_I830(dev)) 645 dev_priv->regfile.saveLVDS = I915_READ(LVDS); 646 } 647 648 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev)) 649 dev_priv->regfile.savePFIT_CONTROL = I915_READ(PFIT_CONTROL); 650 651 if (HAS_PCH_SPLIT(dev)) { 652 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS); 653 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS); 654 dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR); 655 } else { 656 dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS); 657 dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS); 658 dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR); 659 } 660 661 if (!drm_core_check_feature(dev, DRIVER_MODESET)) { 662 /* Display Port state */ 663 if (SUPPORTS_INTEGRATED_DP(dev)) { 664 dev_priv->regfile.saveDP_B = I915_READ(DP_B); 665 dev_priv->regfile.saveDP_C = I915_READ(DP_C); 666 dev_priv->regfile.saveDP_D = I915_READ(DP_D); 667 dev_priv->regfile.savePIPEA_GMCH_DATA_M = I915_READ(_PIPEA_GMCH_DATA_M); 668 dev_priv->regfile.savePIPEB_GMCH_DATA_M = I915_READ(_PIPEB_GMCH_DATA_M); 669 dev_priv->regfile.savePIPEA_GMCH_DATA_N = I915_READ(_PIPEA_GMCH_DATA_N); 670 dev_priv->regfile.savePIPEB_GMCH_DATA_N = I915_READ(_PIPEB_GMCH_DATA_N); 671 dev_priv->regfile.savePIPEA_DP_LINK_M = I915_READ(_PIPEA_DP_LINK_M); 672 dev_priv->regfile.savePIPEB_DP_LINK_M = I915_READ(_PIPEB_DP_LINK_M); 673 dev_priv->regfile.savePIPEA_DP_LINK_N = I915_READ(_PIPEA_DP_LINK_N); 674 dev_priv->regfile.savePIPEB_DP_LINK_N = I915_READ(_PIPEB_DP_LINK_N); 675 } 676 /* FIXME: regfile.save TV & SDVO state */ 677 } 678 679 /* Only regfile.save FBC state on the platform that supports FBC */ 680 if (I915_HAS_FBC(dev)) { 681 if (HAS_PCH_SPLIT(dev)) { 682 dev_priv->regfile.saveDPFC_CB_BASE = I915_READ(ILK_DPFC_CB_BASE); 683 } else if (IS_GM45(dev)) { 684 dev_priv->regfile.saveDPFC_CB_BASE = I915_READ(DPFC_CB_BASE); 685 } else { 686 dev_priv->regfile.saveFBC_CFB_BASE = I915_READ(FBC_CFB_BASE); 687 dev_priv->regfile.saveFBC_LL_BASE = I915_READ(FBC_LL_BASE); 688 dev_priv->regfile.saveFBC_CONTROL2 = I915_READ(FBC_CONTROL2); 689 dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL); 690 } 691 } 692 693 /* VGA state */ 694 dev_priv->regfile.saveVGA0 = I915_READ(VGA0); 695 dev_priv->regfile.saveVGA1 = I915_READ(VGA1); 696 dev_priv->regfile.saveVGA_PD = I915_READ(VGA_PD); 697 if (HAS_PCH_SPLIT(dev)) 698 dev_priv->regfile.saveVGACNTRL = I915_READ(CPU_VGACNTRL); 699 else 700 dev_priv->regfile.saveVGACNTRL = I915_READ(VGACNTRL); 701 702 i915_save_vga(dev); 703 } 704 705 static void i915_restore_display(struct drm_device *dev) 706 { 707 struct drm_i915_private *dev_priv = dev->dev_private; 708 709 /* Display arbitration */ 710 I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB); 711 712 if (!drm_core_check_feature(dev, DRIVER_MODESET)) { 713 /* Display port ratios (must be done before clock is set) */ 714 if (SUPPORTS_INTEGRATED_DP(dev)) { 715 I915_WRITE(_PIPEA_GMCH_DATA_M, dev_priv->regfile.savePIPEA_GMCH_DATA_M); 716 I915_WRITE(_PIPEB_GMCH_DATA_M, dev_priv->regfile.savePIPEB_GMCH_DATA_M); 717 I915_WRITE(_PIPEA_GMCH_DATA_N, dev_priv->regfile.savePIPEA_GMCH_DATA_N); 718 I915_WRITE(_PIPEB_GMCH_DATA_N, dev_priv->regfile.savePIPEB_GMCH_DATA_N); 719 I915_WRITE(_PIPEA_DP_LINK_M, dev_priv->regfile.savePIPEA_DP_LINK_M); 720 I915_WRITE(_PIPEB_DP_LINK_M, dev_priv->regfile.savePIPEB_DP_LINK_M); 721 I915_WRITE(_PIPEA_DP_LINK_N, dev_priv->regfile.savePIPEA_DP_LINK_N); 722 I915_WRITE(_PIPEB_DP_LINK_N, dev_priv->regfile.savePIPEB_DP_LINK_N); 723 } 724 } 725 726 /* This is only meaningful in non-KMS mode */ 727 /* Don't restore them in KMS mode */ 728 i915_restore_modeset_reg(dev); 729 730 /* LVDS state */ 731 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) 732 I915_WRITE(BLC_PWM_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2); 733 734 if (HAS_PCH_SPLIT(dev)) { 735 I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS); 736 } else if (IS_MOBILE(dev) && !IS_I830(dev)) 737 I915_WRITE(LVDS, dev_priv->regfile.saveLVDS); 738 739 if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev)) 740 I915_WRITE(PFIT_CONTROL, dev_priv->regfile.savePFIT_CONTROL); 741 742 if (HAS_PCH_SPLIT(dev)) { 743 I915_WRITE(BLC_PWM_PCH_CTL1, dev_priv->regfile.saveBLC_PWM_CTL); 744 I915_WRITE(BLC_PWM_PCH_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2); 745 /* NOTE: BLC_PWM_CPU_CTL must be written after BLC_PWM_CPU_CTL2; 746 * otherwise we get blank eDP screen after S3 on some machines 747 */ 748 I915_WRITE(BLC_PWM_CPU_CTL2, dev_priv->regfile.saveBLC_CPU_PWM_CTL2); 749 I915_WRITE(BLC_PWM_CPU_CTL, dev_priv->regfile.saveBLC_CPU_PWM_CTL); 750 I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS); 751 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS); 752 I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR); 753 I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL); 754 I915_WRITE(RSTDBYCTL, 755 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY); 756 } else { 757 I915_WRITE(PFIT_PGM_RATIOS, dev_priv->regfile.savePFIT_PGM_RATIOS); 758 I915_WRITE(BLC_PWM_CTL, dev_priv->regfile.saveBLC_PWM_CTL); 759 I915_WRITE(BLC_HIST_CTL, dev_priv->regfile.saveBLC_HIST_CTL); 760 I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS); 761 I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS); 762 I915_WRITE(PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR); 763 I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL); 764 } 765 766 if (!drm_core_check_feature(dev, DRIVER_MODESET)) { 767 /* Display Port state */ 768 if (SUPPORTS_INTEGRATED_DP(dev)) { 769 I915_WRITE(DP_B, dev_priv->regfile.saveDP_B); 770 I915_WRITE(DP_C, dev_priv->regfile.saveDP_C); 771 I915_WRITE(DP_D, dev_priv->regfile.saveDP_D); 772 } 773 /* FIXME: restore TV & SDVO state */ 774 } 775 776 /* only restore FBC info on the platform that supports FBC*/ 777 intel_disable_fbc(dev); 778 if (I915_HAS_FBC(dev)) { 779 if (HAS_PCH_SPLIT(dev)) { 780 I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->regfile.saveDPFC_CB_BASE); 781 } else if (IS_GM45(dev)) { 782 I915_WRITE(DPFC_CB_BASE, dev_priv->regfile.saveDPFC_CB_BASE); 783 } else { 784 I915_WRITE(FBC_CFB_BASE, dev_priv->regfile.saveFBC_CFB_BASE); 785 I915_WRITE(FBC_LL_BASE, dev_priv->regfile.saveFBC_LL_BASE); 786 I915_WRITE(FBC_CONTROL2, dev_priv->regfile.saveFBC_CONTROL2); 787 I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL); 788 } 789 } 790 /* VGA state */ 791 if (HAS_PCH_SPLIT(dev)) 792 I915_WRITE(CPU_VGACNTRL, dev_priv->regfile.saveVGACNTRL); 793 else 794 I915_WRITE(VGACNTRL, dev_priv->regfile.saveVGACNTRL); 795 796 I915_WRITE(VGA0, dev_priv->regfile.saveVGA0); 797 I915_WRITE(VGA1, dev_priv->regfile.saveVGA1); 798 I915_WRITE(VGA_PD, dev_priv->regfile.saveVGA_PD); 799 POSTING_READ(VGA_PD); 800 udelay(150); 801 802 i915_restore_vga(dev); 803 } 804 805 int i915_save_state(struct drm_device *dev) 806 { 807 struct drm_i915_private *dev_priv = dev->dev_private; 808 int i; 809 810 pci_read_config_byte(dev->pdev, LBB, &dev_priv->regfile.saveLBB); 811 812 mutex_lock(&dev->struct_mutex); 813 814 i915_save_display(dev); 815 816 if (!drm_core_check_feature(dev, DRIVER_MODESET)) { 817 /* Interrupt state */ 818 if (HAS_PCH_SPLIT(dev)) { 819 dev_priv->regfile.saveDEIER = I915_READ(DEIER); 820 dev_priv->regfile.saveDEIMR = I915_READ(DEIMR); 821 dev_priv->regfile.saveGTIER = I915_READ(GTIER); 822 dev_priv->regfile.saveGTIMR = I915_READ(GTIMR); 823 dev_priv->regfile.saveFDI_RXA_IMR = I915_READ(_FDI_RXA_IMR); 824 dev_priv->regfile.saveFDI_RXB_IMR = I915_READ(_FDI_RXB_IMR); 825 dev_priv->regfile.saveMCHBAR_RENDER_STANDBY = 826 I915_READ(RSTDBYCTL); 827 dev_priv->regfile.savePCH_PORT_HOTPLUG = I915_READ(PCH_PORT_HOTPLUG); 828 } else { 829 dev_priv->regfile.saveIER = I915_READ(IER); 830 dev_priv->regfile.saveIMR = I915_READ(IMR); 831 } 832 } 833 834 intel_disable_gt_powersave(dev); 835 836 /* Cache mode state */ 837 dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0); 838 839 /* Memory Arbitration state */ 840 dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE); 841 842 /* Scratch space */ 843 for (i = 0; i < 16; i++) { 844 dev_priv->regfile.saveSWF0[i] = I915_READ(SWF00 + (i << 2)); 845 dev_priv->regfile.saveSWF1[i] = I915_READ(SWF10 + (i << 2)); 846 } 847 for (i = 0; i < 3; i++) 848 dev_priv->regfile.saveSWF2[i] = I915_READ(SWF30 + (i << 2)); 849 850 mutex_unlock(&dev->struct_mutex); 851 852 return 0; 853 } 854 855 int i915_restore_state(struct drm_device *dev) 856 { 857 struct drm_i915_private *dev_priv = dev->dev_private; 858 int i; 859 860 pci_write_config_byte(dev->pdev, LBB, dev_priv->regfile.saveLBB); 861 862 mutex_lock(&dev->struct_mutex); 863 864 i915_restore_display(dev); 865 866 if (!drm_core_check_feature(dev, DRIVER_MODESET)) { 867 /* Interrupt state */ 868 if (HAS_PCH_SPLIT(dev)) { 869 I915_WRITE(DEIER, dev_priv->regfile.saveDEIER); 870 I915_WRITE(DEIMR, dev_priv->regfile.saveDEIMR); 871 I915_WRITE(GTIER, dev_priv->regfile.saveGTIER); 872 I915_WRITE(GTIMR, dev_priv->regfile.saveGTIMR); 873 I915_WRITE(_FDI_RXA_IMR, dev_priv->regfile.saveFDI_RXA_IMR); 874 I915_WRITE(_FDI_RXB_IMR, dev_priv->regfile.saveFDI_RXB_IMR); 875 I915_WRITE(PCH_PORT_HOTPLUG, dev_priv->regfile.savePCH_PORT_HOTPLUG); 876 } else { 877 I915_WRITE(IER, dev_priv->regfile.saveIER); 878 I915_WRITE(IMR, dev_priv->regfile.saveIMR); 879 } 880 } 881 882 /* Cache mode state */ 883 I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 | 0xffff0000); 884 885 /* Memory arbitration state */ 886 I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000); 887 888 for (i = 0; i < 16; i++) { 889 I915_WRITE(SWF00 + (i << 2), dev_priv->regfile.saveSWF0[i]); 890 I915_WRITE(SWF10 + (i << 2), dev_priv->regfile.saveSWF1[i]); 891 } 892 for (i = 0; i < 3; i++) 893 I915_WRITE(SWF30 + (i << 2), dev_priv->regfile.saveSWF2[i]); 894 895 mutex_unlock(&dev->struct_mutex); 896 897 intel_i2c_reset(dev); 898 899 return 0; 900 } 901
Indexes created Wed Oct 22 13:09:56 GMT 2025