1 /* 2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 * 23 * Authors: 24 * Ke Yu 25 * Zhiyuan Lv <zhiyuan.lv@intel.com> 26 * 27 * Contributors: 28 * Terrence Xu <terrence.xu@intel.com> 29 * Changbin Du <changbin.du@intel.com> 30 * Bing Niu <bing.niu@intel.com> 31 * Zhi Wang <zhi.a.wang@intel.com> 32 * 33 */ 34 35 #include "i915_drv.h" 36 #include "gvt.h" 37 38 static int get_edp_pipe(struct intel_vgpu *vgpu) 39 { 40 u32 data = vgpu_vreg(vgpu, _TRANS_DDI_FUNC_CTL_EDP); 41 int pipe = -1; 42 43 switch (data & TRANS_DDI_EDP_INPUT_MASK) { 44 case TRANS_DDI_EDP_INPUT_A_ON: 45 case TRANS_DDI_EDP_INPUT_A_ONOFF: 46 pipe = PIPE_A; 47 break; 48 case TRANS_DDI_EDP_INPUT_B_ONOFF: 49 pipe = PIPE_B; 50 break; 51 case TRANS_DDI_EDP_INPUT_C_ONOFF: 52 pipe = PIPE_C; 53 break; 54 } 55 return pipe; 56 } 57 58 static int edp_pipe_is_enabled(struct intel_vgpu *vgpu) 59 { 60 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 61 62 if (!(vgpu_vreg_t(vgpu, PIPECONF(_PIPE_EDP)) & PIPECONF_ENABLE)) 63 return 0; 64 65 if (!(vgpu_vreg(vgpu, _TRANS_DDI_FUNC_CTL_EDP) & TRANS_DDI_FUNC_ENABLE)) 66 return 0; 67 return 1; 68 } 69 70 int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe) 71 { 72 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 73 74 if (drm_WARN_ON(&dev_priv->drm, 75 pipe < PIPE_A || pipe >= I915_MAX_PIPES)) 76 return -EINVAL; 77 78 if (vgpu_vreg_t(vgpu, PIPECONF(pipe)) & PIPECONF_ENABLE) 79 return 1; 80 81 if (edp_pipe_is_enabled(vgpu) && 82 get_edp_pipe(vgpu) == pipe) 83 return 1; 84 return 0; 85 } 86 87 static unsigned char virtual_dp_monitor_edid[GVT_EDID_NUM][EDID_SIZE] = { 88 { 89 /* EDID with 1024x768 as its resolution */ 90 /*Header*/ 91 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 92 /* Vendor & Product Identification */ 93 0x22, 0xf0, 0x54, 0x29, 0x00, 0x00, 0x00, 0x00, 0x04, 0x17, 94 /* Version & Revision */ 95 0x01, 0x04, 96 /* Basic Display Parameters & Features */ 97 0xa5, 0x34, 0x20, 0x78, 0x23, 98 /* Color Characteristics */ 99 0xfc, 0x81, 0xa4, 0x55, 0x4d, 0x9d, 0x25, 0x12, 0x50, 0x54, 100 /* Established Timings: maximum resolution is 1024x768 */ 101 0x21, 0x08, 0x00, 102 /* Standard Timings. All invalid */ 103 0x00, 0xc0, 0x00, 0xc0, 0x00, 0x40, 0x00, 0x80, 0x00, 0x00, 104 0x00, 0x40, 0x00, 0x00, 0x00, 0x01, 105 /* 18 Byte Data Blocks 1: invalid */ 106 0x00, 0x00, 0x80, 0xa0, 0x70, 0xb0, 107 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x06, 0x44, 0x21, 0x00, 0x00, 0x1a, 108 /* 18 Byte Data Blocks 2: invalid */ 109 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x3c, 0x18, 0x50, 0x11, 0x00, 0x0a, 110 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 111 /* 18 Byte Data Blocks 3: invalid */ 112 0x00, 0x00, 0x00, 0xfc, 0x00, 0x48, 113 0x50, 0x20, 0x5a, 0x52, 0x32, 0x34, 0x34, 0x30, 0x77, 0x0a, 0x20, 0x20, 114 /* 18 Byte Data Blocks 4: invalid */ 115 0x00, 0x00, 0x00, 0xff, 0x00, 0x43, 0x4e, 0x34, 0x33, 0x30, 0x34, 0x30, 116 0x44, 0x58, 0x51, 0x0a, 0x20, 0x20, 117 /* Extension Block Count */ 118 0x00, 119 /* Checksum */ 120 0xef, 121 }, 122 { 123 /* EDID with 1920x1200 as its resolution */ 124 /*Header*/ 125 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 126 /* Vendor & Product Identification */ 127 0x22, 0xf0, 0x54, 0x29, 0x00, 0x00, 0x00, 0x00, 0x04, 0x17, 128 /* Version & Revision */ 129 0x01, 0x04, 130 /* Basic Display Parameters & Features */ 131 0xa5, 0x34, 0x20, 0x78, 0x23, 132 /* Color Characteristics */ 133 0xfc, 0x81, 0xa4, 0x55, 0x4d, 0x9d, 0x25, 0x12, 0x50, 0x54, 134 /* Established Timings: maximum resolution is 1024x768 */ 135 0x21, 0x08, 0x00, 136 /* 137 * Standard Timings. 138 * below new resolutions can be supported: 139 * 1920x1080, 1280x720, 1280x960, 1280x1024, 140 * 1440x900, 1600x1200, 1680x1050 141 */ 142 0xd1, 0xc0, 0x81, 0xc0, 0x81, 0x40, 0x81, 0x80, 0x95, 0x00, 143 0xa9, 0x40, 0xb3, 0x00, 0x01, 0x01, 144 /* 18 Byte Data Blocks 1: max resolution is 1920x1200 */ 145 0x28, 0x3c, 0x80, 0xa0, 0x70, 0xb0, 146 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x06, 0x44, 0x21, 0x00, 0x00, 0x1a, 147 /* 18 Byte Data Blocks 2: invalid */ 148 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x3c, 0x18, 0x50, 0x11, 0x00, 0x0a, 149 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 150 /* 18 Byte Data Blocks 3: invalid */ 151 0x00, 0x00, 0x00, 0xfc, 0x00, 0x48, 152 0x50, 0x20, 0x5a, 0x52, 0x32, 0x34, 0x34, 0x30, 0x77, 0x0a, 0x20, 0x20, 153 /* 18 Byte Data Blocks 4: invalid */ 154 0x00, 0x00, 0x00, 0xff, 0x00, 0x43, 0x4e, 0x34, 0x33, 0x30, 0x34, 0x30, 155 0x44, 0x58, 0x51, 0x0a, 0x20, 0x20, 156 /* Extension Block Count */ 157 0x00, 158 /* Checksum */ 159 0x45, 160 }, 161 }; 162 163 #define DPCD_HEADER_SIZE 0xb 164 165 /* let the virtual display supports DP1.2 */ 166 static u8 dpcd_fix_data[DPCD_HEADER_SIZE] = { 167 0x12, 0x014, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 168 }; 169 170 static void emulate_monitor_status_change(struct intel_vgpu *vgpu) 171 { 172 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 173 int pipe; 174 175 if (IS_BROXTON(dev_priv)) { 176 vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) &= ~(BXT_DE_PORT_HP_DDIA | 177 BXT_DE_PORT_HP_DDIB | 178 BXT_DE_PORT_HP_DDIC); 179 180 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_A)) { 181 vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |= 182 BXT_DE_PORT_HP_DDIA; 183 } 184 185 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_B)) { 186 vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |= 187 BXT_DE_PORT_HP_DDIB; 188 } 189 190 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_C)) { 191 vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |= 192 BXT_DE_PORT_HP_DDIC; 193 } 194 195 return; 196 } 197 198 vgpu_vreg_t(vgpu, SDEISR) &= ~(SDE_PORTB_HOTPLUG_CPT | 199 SDE_PORTC_HOTPLUG_CPT | 200 SDE_PORTD_HOTPLUG_CPT); 201 202 if (IS_SKYLAKE(dev_priv) || 203 IS_KABYLAKE(dev_priv) || 204 IS_COFFEELAKE(dev_priv) || 205 IS_COMETLAKE(dev_priv)) { 206 vgpu_vreg_t(vgpu, SDEISR) &= ~(SDE_PORTA_HOTPLUG_SPT | 207 SDE_PORTE_HOTPLUG_SPT); 208 vgpu_vreg_t(vgpu, SKL_FUSE_STATUS) |= 209 SKL_FUSE_DOWNLOAD_STATUS | 210 SKL_FUSE_PG_DIST_STATUS(SKL_PG0) | 211 SKL_FUSE_PG_DIST_STATUS(SKL_PG1) | 212 SKL_FUSE_PG_DIST_STATUS(SKL_PG2); 213 /* 214 * Only 1 PIPE enabled in current vGPU display and PIPE_A is 215 * tied to TRANSCODER_A in HW, so it's safe to assume PIPE_A, 216 * TRANSCODER_A can be enabled. PORT_x depends on the input of 217 * setup_virtual_dp_monitor, we can bind DPLL0 to any PORT_x 218 * so we fixed to DPLL0 here. 219 * Setup DPLL0: DP link clk 1620 MHz, non SSC, DP Mode 220 */ 221 vgpu_vreg_t(vgpu, DPLL_CTRL1) = 222 DPLL_CTRL1_OVERRIDE(DPLL_ID_SKL_DPLL0); 223 vgpu_vreg_t(vgpu, DPLL_CTRL1) |= 224 DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, DPLL_ID_SKL_DPLL0); 225 vgpu_vreg_t(vgpu, LCPLL1_CTL) = 226 LCPLL_PLL_ENABLE | LCPLL_PLL_LOCK; 227 vgpu_vreg_t(vgpu, DPLL_STATUS) = DPLL_LOCK(DPLL_ID_SKL_DPLL0); 228 /* 229 * Golden M/N are calculated based on: 230 * 24 bpp, 4 lanes, 154000 pixel clk (from virtual EDID), 231 * DP link clk 1620 MHz and non-constant_n. 232 * TODO: calculate DP link symbol clk and stream clk m/n. 233 */ 234 vgpu_vreg_t(vgpu, PIPE_DATA_M1(TRANSCODER_A)) = 63 << TU_SIZE_SHIFT; 235 vgpu_vreg_t(vgpu, PIPE_DATA_M1(TRANSCODER_A)) |= 0x5b425e; 236 vgpu_vreg_t(vgpu, PIPE_DATA_N1(TRANSCODER_A)) = 0x800000; 237 vgpu_vreg_t(vgpu, PIPE_LINK_M1(TRANSCODER_A)) = 0x3cd6e; 238 vgpu_vreg_t(vgpu, PIPE_LINK_N1(TRANSCODER_A)) = 0x80000; 239 } 240 241 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_B)) { 242 vgpu_vreg_t(vgpu, DPLL_CTRL2) &= 243 ~DPLL_CTRL2_DDI_CLK_OFF(PORT_B); 244 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 245 DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_B); 246 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 247 DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_B); 248 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDIB_DETECTED; 249 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &= 250 ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK | 251 TRANS_DDI_PORT_MASK); 252 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |= 253 (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST | 254 (PORT_B << TRANS_DDI_PORT_SHIFT) | 255 TRANS_DDI_FUNC_ENABLE); 256 if (IS_BROADWELL(dev_priv)) { 257 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_B)) &= 258 ~PORT_CLK_SEL_MASK; 259 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_B)) |= 260 PORT_CLK_SEL_LCPLL_810; 261 } 262 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_B)) |= DDI_BUF_CTL_ENABLE; 263 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_B)) &= ~DDI_BUF_IS_IDLE; 264 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTB_HOTPLUG_CPT; 265 } 266 267 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_C)) { 268 vgpu_vreg_t(vgpu, DPLL_CTRL2) &= 269 ~DPLL_CTRL2_DDI_CLK_OFF(PORT_C); 270 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 271 DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_C); 272 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 273 DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_C); 274 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTC_HOTPLUG_CPT; 275 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &= 276 ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK | 277 TRANS_DDI_PORT_MASK); 278 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |= 279 (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST | 280 (PORT_C << TRANS_DDI_PORT_SHIFT) | 281 TRANS_DDI_FUNC_ENABLE); 282 if (IS_BROADWELL(dev_priv)) { 283 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_C)) &= 284 ~PORT_CLK_SEL_MASK; 285 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_C)) |= 286 PORT_CLK_SEL_LCPLL_810; 287 } 288 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_C)) |= DDI_BUF_CTL_ENABLE; 289 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_C)) &= ~DDI_BUF_IS_IDLE; 290 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDIC_DETECTED; 291 } 292 293 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_D)) { 294 vgpu_vreg_t(vgpu, DPLL_CTRL2) &= 295 ~DPLL_CTRL2_DDI_CLK_OFF(PORT_D); 296 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 297 DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_D); 298 vgpu_vreg_t(vgpu, DPLL_CTRL2) |= 299 DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_D); 300 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT; 301 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &= 302 ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK | 303 TRANS_DDI_PORT_MASK); 304 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |= 305 (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST | 306 (PORT_D << TRANS_DDI_PORT_SHIFT) | 307 TRANS_DDI_FUNC_ENABLE); 308 if (IS_BROADWELL(dev_priv)) { 309 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_D)) &= 310 ~PORT_CLK_SEL_MASK; 311 vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_D)) |= 312 PORT_CLK_SEL_LCPLL_810; 313 } 314 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_D)) |= DDI_BUF_CTL_ENABLE; 315 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_D)) &= ~DDI_BUF_IS_IDLE; 316 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDID_DETECTED; 317 } 318 319 if ((IS_SKYLAKE(dev_priv) || 320 IS_KABYLAKE(dev_priv) || 321 IS_COFFEELAKE(dev_priv) || 322 IS_COMETLAKE(dev_priv)) && 323 intel_vgpu_has_monitor_on_port(vgpu, PORT_E)) { 324 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTE_HOTPLUG_SPT; 325 } 326 327 if (intel_vgpu_has_monitor_on_port(vgpu, PORT_A)) { 328 if (IS_BROADWELL(dev_priv)) 329 vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |= 330 GEN8_PORT_DP_A_HOTPLUG; 331 else 332 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTA_HOTPLUG_SPT; 333 334 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_A)) |= DDI_INIT_DISPLAY_DETECTED; 335 } 336 337 /* Clear host CRT status, so guest couldn't detect this host CRT. */ 338 if (IS_BROADWELL(dev_priv)) 339 vgpu_vreg_t(vgpu, PCH_ADPA) &= ~ADPA_CRT_HOTPLUG_MONITOR_MASK; 340 341 /* Disable Primary/Sprite/Cursor plane */ 342 for_each_pipe(dev_priv, pipe) { 343 vgpu_vreg_t(vgpu, DSPCNTR(pipe)) &= ~DISPLAY_PLANE_ENABLE; 344 vgpu_vreg_t(vgpu, SPRCTL(pipe)) &= ~SPRITE_ENABLE; 345 vgpu_vreg_t(vgpu, CURCNTR(pipe)) &= ~MCURSOR_MODE; 346 vgpu_vreg_t(vgpu, CURCNTR(pipe)) |= MCURSOR_MODE_DISABLE; 347 } 348 349 vgpu_vreg_t(vgpu, PIPECONF(PIPE_A)) |= PIPECONF_ENABLE; 350 } 351 352 static void clean_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num) 353 { 354 struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num); 355 356 kfree(port->edid); 357 port->edid = NULL; 358 359 kfree(port->dpcd); 360 port->dpcd = NULL; 361 } 362 363 static int setup_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num, 364 int type, unsigned int resolution) 365 { 366 struct drm_i915_private *i915 = vgpu->gvt->gt->i915; 367 struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num); 368 369 if (drm_WARN_ON(&i915->drm, resolution >= GVT_EDID_NUM)) 370 return -EINVAL; 371 372 port->edid = kzalloc(sizeof(*(port->edid)), GFP_KERNEL); 373 if (!port->edid) 374 return -ENOMEM; 375 376 port->dpcd = kzalloc(sizeof(*(port->dpcd)), GFP_KERNEL); 377 if (!port->dpcd) { 378 kfree(port->edid); 379 return -ENOMEM; 380 } 381 382 memcpy(port->edid->edid_block, virtual_dp_monitor_edid[resolution], 383 EDID_SIZE); 384 port->edid->data_valid = true; 385 386 memcpy(port->dpcd->data, dpcd_fix_data, DPCD_HEADER_SIZE); 387 port->dpcd->data_valid = true; 388 port->dpcd->data[DPCD_SINK_COUNT] = 0x1; 389 port->type = type; 390 port->id = resolution; 391 392 emulate_monitor_status_change(vgpu); 393 394 return 0; 395 } 396 397 /** 398 * intel_gvt_check_vblank_emulation - check if vblank emulation timer should 399 * be turned on/off when a virtual pipe is enabled/disabled. 400 * @gvt: a GVT device 401 * 402 * This function is used to turn on/off vblank timer according to currently 403 * enabled/disabled virtual pipes. 404 * 405 */ 406 void intel_gvt_check_vblank_emulation(struct intel_gvt *gvt) 407 { 408 struct intel_gvt_irq *irq = &gvt->irq; 409 struct intel_vgpu *vgpu; 410 int pipe, id; 411 int found = false; 412 413 mutex_lock(&gvt->lock); 414 for_each_active_vgpu(gvt, vgpu, id) { 415 for (pipe = 0; pipe < I915_MAX_PIPES; pipe++) { 416 if (pipe_is_enabled(vgpu, pipe)) { 417 found = true; 418 break; 419 } 420 } 421 if (found) 422 break; 423 } 424 425 /* all the pipes are disabled */ 426 if (!found) 427 hrtimer_cancel(&irq->vblank_timer.timer); 428 else 429 hrtimer_start(&irq->vblank_timer.timer, 430 ktime_add_ns(ktime_get(), irq->vblank_timer.period), 431 HRTIMER_MODE_ABS); 432 mutex_unlock(&gvt->lock); 433 } 434 435 static void emulate_vblank_on_pipe(struct intel_vgpu *vgpu, int pipe) 436 { 437 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 438 struct intel_vgpu_irq *irq = &vgpu->irq; 439 int vblank_event[] = { 440 [PIPE_A] = PIPE_A_VBLANK, 441 [PIPE_B] = PIPE_B_VBLANK, 442 [PIPE_C] = PIPE_C_VBLANK, 443 }; 444 int event; 445 446 if (pipe < PIPE_A || pipe > PIPE_C) 447 return; 448 449 for_each_set_bit(event, irq->flip_done_event[pipe], 450 INTEL_GVT_EVENT_MAX) { 451 clear_bit(event, irq->flip_done_event[pipe]); 452 if (!pipe_is_enabled(vgpu, pipe)) 453 continue; 454 455 intel_vgpu_trigger_virtual_event(vgpu, event); 456 } 457 458 if (pipe_is_enabled(vgpu, pipe)) { 459 vgpu_vreg_t(vgpu, PIPE_FRMCOUNT_G4X(pipe))++; 460 intel_vgpu_trigger_virtual_event(vgpu, vblank_event[pipe]); 461 } 462 } 463 464 static void emulate_vblank(struct intel_vgpu *vgpu) 465 { 466 int pipe; 467 468 mutex_lock(&vgpu->vgpu_lock); 469 for_each_pipe(vgpu->gvt->gt->i915, pipe) 470 emulate_vblank_on_pipe(vgpu, pipe); 471 mutex_unlock(&vgpu->vgpu_lock); 472 } 473 474 /** 475 * intel_gvt_emulate_vblank - trigger vblank events for vGPUs on GVT device 476 * @gvt: a GVT device 477 * 478 * This function is used to trigger vblank interrupts for vGPUs on GVT device 479 * 480 */ 481 void intel_gvt_emulate_vblank(struct intel_gvt *gvt) 482 { 483 struct intel_vgpu *vgpu; 484 int id; 485 486 mutex_lock(&gvt->lock); 487 for_each_active_vgpu(gvt, vgpu, id) 488 emulate_vblank(vgpu); 489 mutex_unlock(&gvt->lock); 490 } 491 492 /** 493 * intel_vgpu_emulate_hotplug - trigger hotplug event for vGPU 494 * @vgpu: a vGPU 495 * @connected: link state 496 * 497 * This function is used to trigger hotplug interrupt for vGPU 498 * 499 */ 500 void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected) 501 { 502 struct drm_i915_private *i915 = vgpu->gvt->gt->i915; 503 504 /* TODO: add more platforms support */ 505 if (IS_SKYLAKE(i915) || 506 IS_KABYLAKE(i915) || 507 IS_COFFEELAKE(i915) || 508 IS_COMETLAKE(i915)) { 509 if (connected) { 510 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= 511 SFUSE_STRAP_DDID_DETECTED; 512 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT; 513 } else { 514 vgpu_vreg_t(vgpu, SFUSE_STRAP) &= 515 ~SFUSE_STRAP_DDID_DETECTED; 516 vgpu_vreg_t(vgpu, SDEISR) &= ~SDE_PORTD_HOTPLUG_CPT; 517 } 518 vgpu_vreg_t(vgpu, SDEIIR) |= SDE_PORTD_HOTPLUG_CPT; 519 vgpu_vreg_t(vgpu, PCH_PORT_HOTPLUG) |= 520 PORTD_HOTPLUG_STATUS_MASK; 521 intel_vgpu_trigger_virtual_event(vgpu, DP_D_HOTPLUG); 522 } 523 } 524 525 /** 526 * intel_vgpu_clean_display - clean vGPU virtual display emulation 527 * @vgpu: a vGPU 528 * 529 * This function is used to clean vGPU virtual display emulation stuffs 530 * 531 */ 532 void intel_vgpu_clean_display(struct intel_vgpu *vgpu) 533 { 534 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 535 536 if (IS_SKYLAKE(dev_priv) || 537 IS_KABYLAKE(dev_priv) || 538 IS_COFFEELAKE(dev_priv) || 539 IS_COMETLAKE(dev_priv)) 540 clean_virtual_dp_monitor(vgpu, PORT_D); 541 else 542 clean_virtual_dp_monitor(vgpu, PORT_B); 543 } 544 545 /** 546 * intel_vgpu_init_display- initialize vGPU virtual display emulation 547 * @vgpu: a vGPU 548 * @resolution: resolution index for intel_vgpu_edid 549 * 550 * This function is used to initialize vGPU virtual display emulation stuffs 551 * 552 * Returns: 553 * Zero on success, negative error code if failed. 554 * 555 */ 556 int intel_vgpu_init_display(struct intel_vgpu *vgpu, u64 resolution) 557 { 558 struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915; 559 560 intel_vgpu_init_i2c_edid(vgpu); 561 562 if (IS_SKYLAKE(dev_priv) || 563 IS_KABYLAKE(dev_priv) || 564 IS_COFFEELAKE(dev_priv) || 565 IS_COMETLAKE(dev_priv)) 566 return setup_virtual_dp_monitor(vgpu, PORT_D, GVT_DP_D, 567 resolution); 568 else 569 return setup_virtual_dp_monitor(vgpu, PORT_B, GVT_DP_B, 570 resolution); 571 } 572 573 /** 574 * intel_vgpu_reset_display- reset vGPU virtual display emulation 575 * @vgpu: a vGPU 576 * 577 * This function is used to reset vGPU virtual display emulation stuffs 578 * 579 */ 580 void intel_vgpu_reset_display(struct intel_vgpu *vgpu) 581 { 582 emulate_monitor_status_change(vgpu); 583 } 584