drivers/gpu/drm/i915/gvt/display.c

   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) || IS_KABYLAKE(dev_priv) ||
 203             IS_COFFEELAKE(dev_priv)) {
 204                 vgpu_vreg_t(vgpu, SDEISR) &= ~(SDE_PORTA_HOTPLUG_SPT |
 205                                 SDE_PORTE_HOTPLUG_SPT);
 206                 vgpu_vreg_t(vgpu, SKL_FUSE_STATUS) |=
 207                                 SKL_FUSE_DOWNLOAD_STATUS |
 208                                 SKL_FUSE_PG_DIST_STATUS(SKL_PG0) |
 209                                 SKL_FUSE_PG_DIST_STATUS(SKL_PG1) |
 210                                 SKL_FUSE_PG_DIST_STATUS(SKL_PG2);
 211                 /*
 212                  * Only 1 PIPE enabled in current vGPU display and PIPE_A is
 213                  *  tied to TRANSCODER_A in HW, so it's safe to assume PIPE_A,
 214                  *   TRANSCODER_A can be enabled. PORT_x depends on the input of
 215                  *   setup_virtual_dp_monitor, we can bind DPLL0 to any PORT_x
 216                  *   so we fixed to DPLL0 here.
 217                  * Setup DPLL0: DP link clk 1620 MHz, non SSC, DP Mode
 218                  */
 219                 vgpu_vreg_t(vgpu, DPLL_CTRL1) =
 220                         DPLL_CTRL1_OVERRIDE(DPLL_ID_SKL_DPLL0);
 221                 vgpu_vreg_t(vgpu, DPLL_CTRL1) |=
 222                         DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, DPLL_ID_SKL_DPLL0);
 223                 vgpu_vreg_t(vgpu, LCPLL1_CTL) =
 224                         LCPLL_PLL_ENABLE | LCPLL_PLL_LOCK;
 225                 vgpu_vreg_t(vgpu, DPLL_STATUS) = DPLL_LOCK(DPLL_ID_SKL_DPLL0);
 226                 /*
 227                  * Golden M/N are calculated based on:
 228                  *   24 bpp, 4 lanes, 154000 pixel clk (from virtual EDID),
 229                  *   DP link clk 1620 MHz and non-constant_n.
 230                  * TODO: calculate DP link symbol clk and stream clk m/n.
 231                  */
 232                 vgpu_vreg_t(vgpu, PIPE_DATA_M1(TRANSCODER_A)) = 63 << TU_SIZE_SHIFT;
 233                 vgpu_vreg_t(vgpu, PIPE_DATA_M1(TRANSCODER_A)) |= 0x5b425e;
 234                 vgpu_vreg_t(vgpu, PIPE_DATA_N1(TRANSCODER_A)) = 0x800000;
 235                 vgpu_vreg_t(vgpu, PIPE_LINK_M1(TRANSCODER_A)) = 0x3cd6e;
 236                 vgpu_vreg_t(vgpu, PIPE_LINK_N1(TRANSCODER_A)) = 0x80000;
 237         }
 238
 239         if (intel_vgpu_has_monitor_on_port(vgpu, PORT_B)) {
 240                 vgpu_vreg_t(vgpu, DPLL_CTRL2) &=
 241                         ~DPLL_CTRL2_DDI_CLK_OFF(PORT_B);
 242                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 243                         DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_B);
 244                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 245                         DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_B);
 246                 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDIB_DETECTED;
 247                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &=
 248                         ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK |
 249                         TRANS_DDI_PORT_MASK);
 250                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |=
 251                         (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST |
 252                         (PORT_B << TRANS_DDI_PORT_SHIFT) |
 253                         TRANS_DDI_FUNC_ENABLE);
 254                 if (IS_BROADWELL(dev_priv)) {
 255                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_B)) &=
 256                                 ~PORT_CLK_SEL_MASK;
 257                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_B)) |=
 258                                 PORT_CLK_SEL_LCPLL_810;
 259                 }
 260                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_B)) |= DDI_BUF_CTL_ENABLE;
 261                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_B)) &= ~DDI_BUF_IS_IDLE;
 262                 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTB_HOTPLUG_CPT;
 263         }
 264
 265         if (intel_vgpu_has_monitor_on_port(vgpu, PORT_C)) {
 266                 vgpu_vreg_t(vgpu, DPLL_CTRL2) &=
 267                         ~DPLL_CTRL2_DDI_CLK_OFF(PORT_C);
 268                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 269                         DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_C);
 270                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 271                         DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_C);
 272                 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTC_HOTPLUG_CPT;
 273                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &=
 274                         ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK |
 275                         TRANS_DDI_PORT_MASK);
 276                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |=
 277                         (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST |
 278                         (PORT_C << TRANS_DDI_PORT_SHIFT) |
 279                         TRANS_DDI_FUNC_ENABLE);
 280                 if (IS_BROADWELL(dev_priv)) {
 281                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_C)) &=
 282                                 ~PORT_CLK_SEL_MASK;
 283                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_C)) |=
 284                                 PORT_CLK_SEL_LCPLL_810;
 285                 }
 286                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_C)) |= DDI_BUF_CTL_ENABLE;
 287                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_C)) &= ~DDI_BUF_IS_IDLE;
 288                 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDIC_DETECTED;
 289         }
 290
 291         if (intel_vgpu_has_monitor_on_port(vgpu, PORT_D)) {
 292                 vgpu_vreg_t(vgpu, DPLL_CTRL2) &=
 293                         ~DPLL_CTRL2_DDI_CLK_OFF(PORT_D);
 294                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 295                         DPLL_CTRL2_DDI_CLK_SEL(DPLL_ID_SKL_DPLL0, PORT_D);
 296                 vgpu_vreg_t(vgpu, DPLL_CTRL2) |=
 297                         DPLL_CTRL2_DDI_SEL_OVERRIDE(PORT_D);
 298                 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT;
 299                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) &=
 300                         ~(TRANS_DDI_BPC_MASK | TRANS_DDI_MODE_SELECT_MASK |
 301                         TRANS_DDI_PORT_MASK);
 302                 vgpu_vreg_t(vgpu, TRANS_DDI_FUNC_CTL(TRANSCODER_A)) |=
 303                         (TRANS_DDI_BPC_8 | TRANS_DDI_MODE_SELECT_DP_SST |
 304                         (PORT_D << TRANS_DDI_PORT_SHIFT) |
 305                         TRANS_DDI_FUNC_ENABLE);
 306                 if (IS_BROADWELL(dev_priv)) {
 307                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_D)) &=
 308                                 ~PORT_CLK_SEL_MASK;
 309                         vgpu_vreg_t(vgpu, PORT_CLK_SEL(PORT_D)) |=
 310                                 PORT_CLK_SEL_LCPLL_810;
 311                 }
 312                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_D)) |= DDI_BUF_CTL_ENABLE;
 313                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_D)) &= ~DDI_BUF_IS_IDLE;
 314                 vgpu_vreg_t(vgpu, SFUSE_STRAP) |= SFUSE_STRAP_DDID_DETECTED;
 315         }
 316
 317         if ((IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
 318              IS_COFFEELAKE(dev_priv)) &&
 319                         intel_vgpu_has_monitor_on_port(vgpu, PORT_E)) {
 320                 vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTE_HOTPLUG_SPT;
 321         }
 322
 323         if (intel_vgpu_has_monitor_on_port(vgpu, PORT_A)) {
 324                 if (IS_BROADWELL(dev_priv))
 325                         vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |=
 326                                 GEN8_PORT_DP_A_HOTPLUG;
 327                 else
 328                         vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTA_HOTPLUG_SPT;
 329
 330                 vgpu_vreg_t(vgpu, DDI_BUF_CTL(PORT_A)) |= DDI_INIT_DISPLAY_DETECTED;
 331         }
 332
 333         /* Clear host CRT status, so guest couldn't detect this host CRT. */
 334         if (IS_BROADWELL(dev_priv))
 335                 vgpu_vreg_t(vgpu, PCH_ADPA) &= ~ADPA_CRT_HOTPLUG_MONITOR_MASK;
 336
 337         /* Disable Primary/Sprite/Cursor plane */
 338         for_each_pipe(dev_priv, pipe) {
 339                 vgpu_vreg_t(vgpu, DSPCNTR(pipe)) &= ~DISPLAY_PLANE_ENABLE;
 340                 vgpu_vreg_t(vgpu, SPRCTL(pipe)) &= ~SPRITE_ENABLE;
 341                 vgpu_vreg_t(vgpu, CURCNTR(pipe)) &= ~MCURSOR_MODE;
 342                 vgpu_vreg_t(vgpu, CURCNTR(pipe)) |= MCURSOR_MODE_DISABLE;
 343         }
 344
 345         vgpu_vreg_t(vgpu, PIPECONF(PIPE_A)) |= PIPECONF_ENABLE;
 346 }
 347
 348 static void clean_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num)
 349 {
 350         struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num);
 351
 352         kfree(port->edid);
 353         port->edid = NULL;
 354
 355         kfree(port->dpcd);
 356         port->dpcd = NULL;
 357 }
 358
 359 static int setup_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num,
 360                                     int type, unsigned int resolution)
 361 {
 362         struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
 363         struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num);
 364
 365         if (drm_WARN_ON(&i915->drm, resolution >= GVT_EDID_NUM))
 366                 return -EINVAL;
 367
 368         port->edid = kzalloc(sizeof(*(port->edid)), GFP_KERNEL);
 369         if (!port->edid)
 370                 return -ENOMEM;
 371
 372         port->dpcd = kzalloc(sizeof(*(port->dpcd)), GFP_KERNEL);
 373         if (!port->dpcd) {
 374                 kfree(port->edid);
 375                 return -ENOMEM;
 376         }
 377
 378         memcpy(port->edid->edid_block, virtual_dp_monitor_edid[resolution],
 379                         EDID_SIZE);
 380         port->edid->data_valid = true;
 381
 382         memcpy(port->dpcd->data, dpcd_fix_data, DPCD_HEADER_SIZE);
 383         port->dpcd->data_valid = true;
 384         port->dpcd->data[DPCD_SINK_COUNT] = 0x1;
 385         port->type = type;
 386         port->id = resolution;
 387
 388         emulate_monitor_status_change(vgpu);
 389
 390         return 0;
 391 }
 392
 393 /**
 394  * intel_gvt_check_vblank_emulation - check if vblank emulation timer should
 395  * be turned on/off when a virtual pipe is enabled/disabled.
 396  * @gvt: a GVT device
 397  *
 398  * This function is used to turn on/off vblank timer according to currently
 399  * enabled/disabled virtual pipes.
 400  *
 401  */
 402 void intel_gvt_check_vblank_emulation(struct intel_gvt *gvt)
 403 {
 404         struct intel_gvt_irq *irq = &gvt->irq;
 405         struct intel_vgpu *vgpu;
 406         int pipe, id;
 407         int found = false;
 408
 409         mutex_lock(&gvt->lock);
 410         for_each_active_vgpu(gvt, vgpu, id) {
 411                 for (pipe = 0; pipe < I915_MAX_PIPES; pipe++) {
 412                         if (pipe_is_enabled(vgpu, pipe)) {
 413                                 found = true;
 414                                 break;
 415                         }
 416                 }
 417                 if (found)
 418                         break;
 419         }
 420
 421         /* all the pipes are disabled */
 422         if (!found)
 423                 hrtimer_cancel(&irq->vblank_timer.timer);
 424         else
 425                 hrtimer_start(&irq->vblank_timer.timer,
 426                         ktime_add_ns(ktime_get(), irq->vblank_timer.period),
 427                         HRTIMER_MODE_ABS);
 428         mutex_unlock(&gvt->lock);
 429 }
 430
 431 static void emulate_vblank_on_pipe(struct intel_vgpu *vgpu, int pipe)
 432 {
 433         struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915;
 434         struct intel_vgpu_irq *irq = &vgpu->irq;
 435         int vblank_event[] = {
 436                 [PIPE_A] = PIPE_A_VBLANK,
 437                 [PIPE_B] = PIPE_B_VBLANK,
 438                 [PIPE_C] = PIPE_C_VBLANK,
 439         };
 440         int event;
 441
 442         if (pipe < PIPE_A || pipe > PIPE_C)
 443                 return;
 444
 445         for_each_set_bit(event, irq->flip_done_event[pipe],
 446                         INTEL_GVT_EVENT_MAX) {
 447                 clear_bit(event, irq->flip_done_event[pipe]);
 448                 if (!pipe_is_enabled(vgpu, pipe))
 449                         continue;
 450
 451                 intel_vgpu_trigger_virtual_event(vgpu, event);
 452         }
 453
 454         if (pipe_is_enabled(vgpu, pipe)) {
 455                 vgpu_vreg_t(vgpu, PIPE_FRMCOUNT_G4X(pipe))++;
 456                 intel_vgpu_trigger_virtual_event(vgpu, vblank_event[pipe]);
 457         }
 458 }
 459
 460 static void emulate_vblank(struct intel_vgpu *vgpu)
 461 {
 462         int pipe;
 463
 464         mutex_lock(&vgpu->vgpu_lock);
 465         for_each_pipe(vgpu->gvt->gt->i915, pipe)
 466                 emulate_vblank_on_pipe(vgpu, pipe);
 467         mutex_unlock(&vgpu->vgpu_lock);
 468 }
 469
 470 /**
 471  * intel_gvt_emulate_vblank - trigger vblank events for vGPUs on GVT device
 472  * @gvt: a GVT device
 473  *
 474  * This function is used to trigger vblank interrupts for vGPUs on GVT device
 475  *
 476  */
 477 void intel_gvt_emulate_vblank(struct intel_gvt *gvt)
 478 {
 479         struct intel_vgpu *vgpu;
 480         int id;
 481
 482         mutex_lock(&gvt->lock);
 483         for_each_active_vgpu(gvt, vgpu, id)
 484                 emulate_vblank(vgpu);
 485         mutex_unlock(&gvt->lock);
 486 }
 487
 488 /**
 489  * intel_vgpu_emulate_hotplug - trigger hotplug event for vGPU
 490  * @vgpu: a vGPU
 491  * @connected: link state
 492  *
 493  * This function is used to trigger hotplug interrupt for vGPU
 494  *
 495  */
 496 void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected)
 497 {
 498         struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
 499
 500         /* TODO: add more platforms support */
 501         if (IS_SKYLAKE(i915) || IS_KABYLAKE(i915) ||
 502             IS_COFFEELAKE(i915)) {
 503                 if (connected) {
 504                         vgpu_vreg_t(vgpu, SFUSE_STRAP) |=
 505                                 SFUSE_STRAP_DDID_DETECTED;
 506                         vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT;
 507                 } else {
 508                         vgpu_vreg_t(vgpu, SFUSE_STRAP) &=
 509                                 ~SFUSE_STRAP_DDID_DETECTED;
 510                         vgpu_vreg_t(vgpu, SDEISR) &= ~SDE_PORTD_HOTPLUG_CPT;
 511                 }
 512                 vgpu_vreg_t(vgpu, SDEIIR) |= SDE_PORTD_HOTPLUG_CPT;
 513                 vgpu_vreg_t(vgpu, PCH_PORT_HOTPLUG) |=
 514                                 PORTD_HOTPLUG_STATUS_MASK;
 515                 intel_vgpu_trigger_virtual_event(vgpu, DP_D_HOTPLUG);
 516         }
 517 }
 518
 519 /**
 520  * intel_vgpu_clean_display - clean vGPU virtual display emulation
 521  * @vgpu: a vGPU
 522  *
 523  * This function is used to clean vGPU virtual display emulation stuffs
 524  *
 525  */
 526 void intel_vgpu_clean_display(struct intel_vgpu *vgpu)
 527 {
 528         struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915;
 529
 530         if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
 531             IS_COFFEELAKE(dev_priv))
 532                 clean_virtual_dp_monitor(vgpu, PORT_D);
 533         else
 534                 clean_virtual_dp_monitor(vgpu, PORT_B);
 535 }
 536
 537 /**
 538  * intel_vgpu_init_display- initialize vGPU virtual display emulation
 539  * @vgpu: a vGPU
 540  * @resolution: resolution index for intel_vgpu_edid
 541  *
 542  * This function is used to initialize vGPU virtual display emulation stuffs
 543  *
 544  * Returns:
 545  * Zero on success, negative error code if failed.
 546  *
 547  */
 548 int intel_vgpu_init_display(struct intel_vgpu *vgpu, u64 resolution)
 549 {
 550         struct drm_i915_private *dev_priv = vgpu->gvt->gt->i915;
 551
 552         intel_vgpu_init_i2c_edid(vgpu);
 553
 554         if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
 555             IS_COFFEELAKE(dev_priv))
 556                 return setup_virtual_dp_monitor(vgpu, PORT_D, GVT_DP_D,
 557                                                 resolution);
 558         else
 559                 return setup_virtual_dp_monitor(vgpu, PORT_B, GVT_DP_B,
 560                                                 resolution);
 561 }
 562
 563 /**
 564  * intel_vgpu_reset_display- reset vGPU virtual display emulation
 565  * @vgpu: a vGPU
 566  *
 567  * This function is used to reset vGPU virtual display emulation stuffs
 568  *
 569  */
 570 void intel_vgpu_reset_display(struct intel_vgpu *vgpu)
 571 {
 572         emulate_monitor_status_change(vgpu);
 573 }