1 /* 2 * Copyright © 2009 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 * Daniel Vetter <daniel@ffwll.ch> 25 * 26 * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c 27 */ 28 29 #include <drm/drm_fourcc.h> 30 31 #include "gem/i915_gem_internal.h" 32 #include "gem/i915_gem_object_frontbuffer.h" 33 #include "gem/i915_gem_pm.h" 34 #include "gt/intel_gpu_commands.h" 35 #include "gt/intel_ring.h" 36 37 #include "i915_drv.h" 38 #include "i915_reg.h" 39 #include "intel_color_regs.h" 40 #include "intel_de.h" 41 #include "intel_display_types.h" 42 #include "intel_frontbuffer.h" 43 #include "intel_overlay.h" 44 #include "intel_pci_config.h" 45 46 /* Limits for overlay size. According to intel doc, the real limits are: 47 * Y width: 4095, UV width (planar): 2047, Y height: 2047, 48 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use 49 * the mininum of both. */ 50 #define IMAGE_MAX_WIDTH 2048 51 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */ 52 /* on 830 and 845 these large limits result in the card hanging */ 53 #define IMAGE_MAX_WIDTH_LEGACY 1024 54 #define IMAGE_MAX_HEIGHT_LEGACY 1088 55 56 /* overlay register definitions */ 57 /* OCMD register */ 58 #define OCMD_TILED_SURFACE (0x1<<19) 59 #define OCMD_MIRROR_MASK (0x3<<17) 60 #define OCMD_MIRROR_MODE (0x3<<17) 61 #define OCMD_MIRROR_HORIZONTAL (0x1<<17) 62 #define OCMD_MIRROR_VERTICAL (0x2<<17) 63 #define OCMD_MIRROR_BOTH (0x3<<17) 64 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */ 65 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */ 66 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */ 67 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */ 68 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10) 69 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */ 70 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */ 71 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */ 72 #define OCMD_YUV_422_PACKED (0x8<<10) 73 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */ 74 #define OCMD_YUV_420_PLANAR (0xc<<10) 75 #define OCMD_YUV_422_PLANAR (0xd<<10) 76 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */ 77 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9) 78 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7) 79 #define OCMD_BUF_TYPE_MASK (0x1<<5) 80 #define OCMD_BUF_TYPE_FRAME (0x0<<5) 81 #define OCMD_BUF_TYPE_FIELD (0x1<<5) 82 #define OCMD_TEST_MODE (0x1<<4) 83 #define OCMD_BUFFER_SELECT (0x3<<2) 84 #define OCMD_BUFFER0 (0x0<<2) 85 #define OCMD_BUFFER1 (0x1<<2) 86 #define OCMD_FIELD_SELECT (0x1<<2) 87 #define OCMD_FIELD0 (0x0<<1) 88 #define OCMD_FIELD1 (0x1<<1) 89 #define OCMD_ENABLE (0x1<<0) 90 91 /* OCONFIG register */ 92 #define OCONF_PIPE_MASK (0x1<<18) 93 #define OCONF_PIPE_A (0x0<<18) 94 #define OCONF_PIPE_B (0x1<<18) 95 #define OCONF_GAMMA2_ENABLE (0x1<<16) 96 #define OCONF_CSC_MODE_BT601 (0x0<<5) 97 #define OCONF_CSC_MODE_BT709 (0x1<<5) 98 #define OCONF_CSC_BYPASS (0x1<<4) 99 #define OCONF_CC_OUT_8BIT (0x1<<3) 100 #define OCONF_TEST_MODE (0x1<<2) 101 #define OCONF_THREE_LINE_BUFFER (0x1<<0) 102 #define OCONF_TWO_LINE_BUFFER (0x0<<0) 103 104 /* DCLRKM (dst-key) register */ 105 #define DST_KEY_ENABLE (0x1<<31) 106 #define CLK_RGB24_MASK 0x0 107 #define CLK_RGB16_MASK 0x070307 108 #define CLK_RGB15_MASK 0x070707 109 110 #define RGB30_TO_COLORKEY(c) \ 111 ((((c) & 0x3fc00000) >> 6) | (((c) & 0x000ff000) >> 4) | (((c) & 0x000003fc) >> 2)) 112 #define RGB16_TO_COLORKEY(c) \ 113 ((((c) & 0xf800) << 8) | (((c) & 0x07e0) << 5) | (((c) & 0x001f) << 3)) 114 #define RGB15_TO_COLORKEY(c) \ 115 ((((c) & 0x7c00) << 9) | (((c) & 0x03e0) << 6) | (((c) & 0x001f) << 3)) 116 #define RGB8I_TO_COLORKEY(c) \ 117 ((((c) & 0xff) << 16) | (((c) & 0xff) << 8) | (((c) & 0xff) << 0)) 118 119 /* overlay flip addr flag */ 120 #define OFC_UPDATE 0x1 121 122 /* polyphase filter coefficients */ 123 #define N_HORIZ_Y_TAPS 5 124 #define N_VERT_Y_TAPS 3 125 #define N_HORIZ_UV_TAPS 3 126 #define N_VERT_UV_TAPS 3 127 #define N_PHASES 17 128 #define MAX_TAPS 5 129 130 /* memory bufferd overlay registers */ 131 struct overlay_registers { 132 u32 OBUF_0Y; 133 u32 OBUF_1Y; 134 u32 OBUF_0U; 135 u32 OBUF_0V; 136 u32 OBUF_1U; 137 u32 OBUF_1V; 138 u32 OSTRIDE; 139 u32 YRGB_VPH; 140 u32 UV_VPH; 141 u32 HORZ_PH; 142 u32 INIT_PHS; 143 u32 DWINPOS; 144 u32 DWINSZ; 145 u32 SWIDTH; 146 u32 SWIDTHSW; 147 u32 SHEIGHT; 148 u32 YRGBSCALE; 149 u32 UVSCALE; 150 u32 OCLRC0; 151 u32 OCLRC1; 152 u32 DCLRKV; 153 u32 DCLRKM; 154 u32 SCLRKVH; 155 u32 SCLRKVL; 156 u32 SCLRKEN; 157 u32 OCONFIG; 158 u32 OCMD; 159 u32 RESERVED1; /* 0x6C */ 160 u32 OSTART_0Y; 161 u32 OSTART_1Y; 162 u32 OSTART_0U; 163 u32 OSTART_0V; 164 u32 OSTART_1U; 165 u32 OSTART_1V; 166 u32 OTILEOFF_0Y; 167 u32 OTILEOFF_1Y; 168 u32 OTILEOFF_0U; 169 u32 OTILEOFF_0V; 170 u32 OTILEOFF_1U; 171 u32 OTILEOFF_1V; 172 u32 FASTHSCALE; /* 0xA0 */ 173 u32 UVSCALEV; /* 0xA4 */ 174 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */ 175 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */ 176 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES]; 177 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */ 178 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES]; 179 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */ 180 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES]; 181 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */ 182 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES]; 183 }; 184 185 struct intel_overlay { 186 struct drm_i915_private *i915; 187 struct intel_context *context; 188 struct intel_crtc *crtc; 189 struct i915_vma *vma; 190 struct i915_vma *old_vma; 191 struct intel_frontbuffer *frontbuffer; 192 bool active; 193 bool pfit_active; 194 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */ 195 u32 color_key:24; 196 u32 color_key_enabled:1; 197 u32 brightness, contrast, saturation; 198 u32 old_xscale, old_yscale; 199 /* register access */ 200 struct drm_i915_gem_object *reg_bo; 201 struct overlay_registers __iomem *regs; 202 u32 flip_addr; 203 /* flip handling */ 204 struct i915_active last_flip; 205 void (*flip_complete)(struct intel_overlay *ovl); 206 }; 207 208 static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv, 209 bool enable) 210 { 211 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 212 u8 val; 213 214 /* WA_OVERLAY_CLKGATE:alm */ 215 if (enable) 216 intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), 0); 217 else 218 intel_de_write(dev_priv, DSPCLK_GATE_D(dev_priv), 219 OVRUNIT_CLOCK_GATE_DISABLE); 220 221 /* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */ 222 pci_bus_read_config_byte(pdev->bus, 223 PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val); 224 if (enable) 225 val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE; 226 else 227 val |= I830_L2_CACHE_CLOCK_GATE_DISABLE; 228 pci_bus_write_config_byte(pdev->bus, 229 PCI_DEVFN(0, 0), I830_CLOCK_GATE, val); 230 } 231 232 static struct i915_request * 233 alloc_request(struct intel_overlay *overlay, void (*fn)(struct intel_overlay *)) 234 { 235 struct i915_request *rq; 236 int err; 237 238 overlay->flip_complete = fn; 239 240 rq = i915_request_create(overlay->context); 241 if (IS_ERR(rq)) 242 return rq; 243 244 err = i915_active_add_request(&overlay->last_flip, rq); 245 if (err) { 246 i915_request_add(rq); 247 return ERR_PTR(err); 248 } 249 250 return rq; 251 } 252 253 /* overlay needs to be disable in OCMD reg */ 254 static int intel_overlay_on(struct intel_overlay *overlay) 255 { 256 struct drm_i915_private *dev_priv = overlay->i915; 257 struct i915_request *rq; 258 u32 *cs; 259 260 drm_WARN_ON(&dev_priv->drm, overlay->active); 261 262 rq = alloc_request(overlay, NULL); 263 if (IS_ERR(rq)) 264 return PTR_ERR(rq); 265 266 cs = intel_ring_begin(rq, 4); 267 if (IS_ERR(cs)) { 268 i915_request_add(rq); 269 return PTR_ERR(cs); 270 } 271 272 overlay->active = true; 273 274 if (IS_I830(dev_priv)) 275 i830_overlay_clock_gating(dev_priv, false); 276 277 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_ON; 278 *cs++ = overlay->flip_addr | OFC_UPDATE; 279 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; 280 *cs++ = MI_NOOP; 281 intel_ring_advance(rq, cs); 282 283 i915_request_add(rq); 284 285 return i915_active_wait(&overlay->last_flip); 286 } 287 288 static void intel_overlay_flip_prepare(struct intel_overlay *overlay, 289 struct i915_vma *vma) 290 { 291 enum pipe pipe = overlay->crtc->pipe; 292 struct intel_frontbuffer *frontbuffer = NULL; 293 294 drm_WARN_ON(&overlay->i915->drm, overlay->old_vma); 295 296 if (vma) 297 frontbuffer = intel_frontbuffer_get(vma->obj); 298 299 intel_frontbuffer_track(overlay->frontbuffer, frontbuffer, 300 INTEL_FRONTBUFFER_OVERLAY(pipe)); 301 302 if (overlay->frontbuffer) 303 intel_frontbuffer_put(overlay->frontbuffer); 304 overlay->frontbuffer = frontbuffer; 305 306 intel_frontbuffer_flip_prepare(overlay->i915, 307 INTEL_FRONTBUFFER_OVERLAY(pipe)); 308 309 overlay->old_vma = overlay->vma; 310 if (vma) 311 overlay->vma = i915_vma_get(vma); 312 else 313 overlay->vma = NULL; 314 } 315 316 /* overlay needs to be enabled in OCMD reg */ 317 static int intel_overlay_continue(struct intel_overlay *overlay, 318 struct i915_vma *vma, 319 bool load_polyphase_filter) 320 { 321 struct drm_i915_private *dev_priv = overlay->i915; 322 struct i915_request *rq; 323 u32 flip_addr = overlay->flip_addr; 324 u32 tmp, *cs; 325 326 drm_WARN_ON(&dev_priv->drm, !overlay->active); 327 328 if (load_polyphase_filter) 329 flip_addr |= OFC_UPDATE; 330 331 /* check for underruns */ 332 tmp = intel_de_read(dev_priv, DOVSTA); 333 if (tmp & (1 << 17)) 334 drm_dbg(&dev_priv->drm, "overlay underrun, DOVSTA: %x\n", tmp); 335 336 rq = alloc_request(overlay, NULL); 337 if (IS_ERR(rq)) 338 return PTR_ERR(rq); 339 340 cs = intel_ring_begin(rq, 2); 341 if (IS_ERR(cs)) { 342 i915_request_add(rq); 343 return PTR_ERR(cs); 344 } 345 346 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE; 347 *cs++ = flip_addr; 348 intel_ring_advance(rq, cs); 349 350 intel_overlay_flip_prepare(overlay, vma); 351 i915_request_add(rq); 352 353 return 0; 354 } 355 356 static void intel_overlay_release_old_vma(struct intel_overlay *overlay) 357 { 358 struct i915_vma *vma; 359 360 vma = fetch_and_zero(&overlay->old_vma); 361 if (drm_WARN_ON(&overlay->i915->drm, !vma)) 362 return; 363 364 intel_frontbuffer_flip_complete(overlay->i915, 365 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe)); 366 367 i915_vma_unpin(vma); 368 i915_vma_put(vma); 369 } 370 371 static void 372 intel_overlay_release_old_vid_tail(struct intel_overlay *overlay) 373 { 374 intel_overlay_release_old_vma(overlay); 375 } 376 377 static void intel_overlay_off_tail(struct intel_overlay *overlay) 378 { 379 struct drm_i915_private *dev_priv = overlay->i915; 380 381 intel_overlay_release_old_vma(overlay); 382 383 overlay->crtc->overlay = NULL; 384 overlay->crtc = NULL; 385 overlay->active = false; 386 387 if (IS_I830(dev_priv)) 388 i830_overlay_clock_gating(dev_priv, true); 389 } 390 391 static void intel_overlay_last_flip_retire(struct i915_active *active) 392 { 393 struct intel_overlay *overlay = 394 container_of(active, typeof(*overlay), last_flip); 395 396 if (overlay->flip_complete) 397 overlay->flip_complete(overlay); 398 } 399 400 /* overlay needs to be disabled in OCMD reg */ 401 static int intel_overlay_off(struct intel_overlay *overlay) 402 { 403 struct i915_request *rq; 404 u32 *cs, flip_addr = overlay->flip_addr; 405 406 drm_WARN_ON(&overlay->i915->drm, !overlay->active); 407 408 /* According to intel docs the overlay hw may hang (when switching 409 * off) without loading the filter coeffs. It is however unclear whether 410 * this applies to the disabling of the overlay or to the switching off 411 * of the hw. Do it in both cases */ 412 flip_addr |= OFC_UPDATE; 413 414 rq = alloc_request(overlay, intel_overlay_off_tail); 415 if (IS_ERR(rq)) 416 return PTR_ERR(rq); 417 418 cs = intel_ring_begin(rq, 6); 419 if (IS_ERR(cs)) { 420 i915_request_add(rq); 421 return PTR_ERR(cs); 422 } 423 424 /* wait for overlay to go idle */ 425 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE; 426 *cs++ = flip_addr; 427 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; 428 429 /* turn overlay off */ 430 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_OFF; 431 *cs++ = flip_addr; 432 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; 433 434 intel_ring_advance(rq, cs); 435 436 intel_overlay_flip_prepare(overlay, NULL); 437 i915_request_add(rq); 438 439 return i915_active_wait(&overlay->last_flip); 440 } 441 442 /* recover from an interruption due to a signal 443 * We have to be careful not to repeat work forever an make forward progess. */ 444 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay) 445 { 446 return i915_active_wait(&overlay->last_flip); 447 } 448 449 /* Wait for pending overlay flip and release old frame. 450 * Needs to be called before the overlay register are changed 451 * via intel_overlay_(un)map_regs 452 */ 453 static int intel_overlay_release_old_vid(struct intel_overlay *overlay) 454 { 455 struct drm_i915_private *dev_priv = overlay->i915; 456 struct i915_request *rq; 457 u32 *cs; 458 459 /* 460 * Only wait if there is actually an old frame to release to 461 * guarantee forward progress. 462 */ 463 if (!overlay->old_vma) 464 return 0; 465 466 if (!(intel_de_read(dev_priv, GEN2_ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT)) { 467 intel_overlay_release_old_vid_tail(overlay); 468 return 0; 469 } 470 471 rq = alloc_request(overlay, intel_overlay_release_old_vid_tail); 472 if (IS_ERR(rq)) 473 return PTR_ERR(rq); 474 475 cs = intel_ring_begin(rq, 2); 476 if (IS_ERR(cs)) { 477 i915_request_add(rq); 478 return PTR_ERR(cs); 479 } 480 481 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP; 482 *cs++ = MI_NOOP; 483 intel_ring_advance(rq, cs); 484 485 i915_request_add(rq); 486 487 return i915_active_wait(&overlay->last_flip); 488 } 489 490 void intel_overlay_reset(struct drm_i915_private *dev_priv) 491 { 492 struct intel_overlay *overlay = dev_priv->display.overlay; 493 494 if (!overlay) 495 return; 496 497 overlay->old_xscale = 0; 498 overlay->old_yscale = 0; 499 overlay->crtc = NULL; 500 overlay->active = false; 501 } 502 503 static int packed_depth_bytes(u32 format) 504 { 505 switch (format & I915_OVERLAY_DEPTH_MASK) { 506 case I915_OVERLAY_YUV422: 507 return 4; 508 case I915_OVERLAY_YUV411: 509 /* return 6; not implemented */ 510 default: 511 return -EINVAL; 512 } 513 } 514 515 static int packed_width_bytes(u32 format, short width) 516 { 517 switch (format & I915_OVERLAY_DEPTH_MASK) { 518 case I915_OVERLAY_YUV422: 519 return width << 1; 520 default: 521 return -EINVAL; 522 } 523 } 524 525 static int uv_hsubsampling(u32 format) 526 { 527 switch (format & I915_OVERLAY_DEPTH_MASK) { 528 case I915_OVERLAY_YUV422: 529 case I915_OVERLAY_YUV420: 530 return 2; 531 case I915_OVERLAY_YUV411: 532 case I915_OVERLAY_YUV410: 533 return 4; 534 default: 535 return -EINVAL; 536 } 537 } 538 539 static int uv_vsubsampling(u32 format) 540 { 541 switch (format & I915_OVERLAY_DEPTH_MASK) { 542 case I915_OVERLAY_YUV420: 543 case I915_OVERLAY_YUV410: 544 return 2; 545 case I915_OVERLAY_YUV422: 546 case I915_OVERLAY_YUV411: 547 return 1; 548 default: 549 return -EINVAL; 550 } 551 } 552 553 static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width) 554 { 555 u32 sw; 556 557 if (DISPLAY_VER(dev_priv) == 2) 558 sw = ALIGN((offset & 31) + width, 32); 559 else 560 sw = ALIGN((offset & 63) + width, 64); 561 562 if (sw == 0) 563 return 0; 564 565 return (sw - 32) >> 3; 566 } 567 568 static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = { 569 [ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, }, 570 [ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, }, 571 [ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, }, 572 [ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, }, 573 [ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, }, 574 [ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, }, 575 [ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, }, 576 [ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, }, 577 [ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, }, 578 [ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, }, 579 [10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, }, 580 [11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, }, 581 [12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, }, 582 [13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, }, 583 [14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, }, 584 [15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, }, 585 [16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, }, 586 }; 587 588 static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = { 589 [ 0] = { 0x3000, 0x1800, 0x1800, }, 590 [ 1] = { 0xb000, 0x18d0, 0x2e60, }, 591 [ 2] = { 0xb000, 0x1990, 0x2ce0, }, 592 [ 3] = { 0xb020, 0x1a68, 0x2b40, }, 593 [ 4] = { 0xb040, 0x1b20, 0x29e0, }, 594 [ 5] = { 0xb060, 0x1bd8, 0x2880, }, 595 [ 6] = { 0xb080, 0x1c88, 0x3e60, }, 596 [ 7] = { 0xb0a0, 0x1d28, 0x3c00, }, 597 [ 8] = { 0xb0c0, 0x1db8, 0x39e0, }, 598 [ 9] = { 0xb0e0, 0x1e40, 0x37e0, }, 599 [10] = { 0xb100, 0x1eb8, 0x3620, }, 600 [11] = { 0xb100, 0x1f18, 0x34a0, }, 601 [12] = { 0xb100, 0x1f68, 0x3360, }, 602 [13] = { 0xb0e0, 0x1fa8, 0x3240, }, 603 [14] = { 0xb0c0, 0x1fe0, 0x3140, }, 604 [15] = { 0xb060, 0x1ff0, 0x30a0, }, 605 [16] = { 0x3000, 0x0800, 0x3000, }, 606 }; 607 608 static void update_polyphase_filter(struct overlay_registers __iomem *regs) 609 { 610 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs)); 611 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs, 612 sizeof(uv_static_hcoeffs)); 613 } 614 615 static bool update_scaling_factors(struct intel_overlay *overlay, 616 struct overlay_registers __iomem *regs, 617 struct drm_intel_overlay_put_image *params) 618 { 619 /* fixed point with a 12 bit shift */ 620 u32 xscale, yscale, xscale_UV, yscale_UV; 621 #define FP_SHIFT 12 622 #define FRACT_MASK 0xfff 623 bool scale_changed = false; 624 int uv_hscale = uv_hsubsampling(params->flags); 625 int uv_vscale = uv_vsubsampling(params->flags); 626 627 if (params->dst_width > 1) 628 xscale = ((params->src_scan_width - 1) << FP_SHIFT) / 629 params->dst_width; 630 else 631 xscale = 1 << FP_SHIFT; 632 633 if (params->dst_height > 1) 634 yscale = ((params->src_scan_height - 1) << FP_SHIFT) / 635 params->dst_height; 636 else 637 yscale = 1 << FP_SHIFT; 638 639 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/ 640 xscale_UV = xscale/uv_hscale; 641 yscale_UV = yscale/uv_vscale; 642 /* make the Y scale to UV scale ratio an exact multiply */ 643 xscale = xscale_UV * uv_hscale; 644 yscale = yscale_UV * uv_vscale; 645 /*} else { 646 xscale_UV = 0; 647 yscale_UV = 0; 648 }*/ 649 650 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale) 651 scale_changed = true; 652 overlay->old_xscale = xscale; 653 overlay->old_yscale = yscale; 654 655 iowrite32(((yscale & FRACT_MASK) << 20) | 656 ((xscale >> FP_SHIFT) << 16) | 657 ((xscale & FRACT_MASK) << 3), 658 ®s->YRGBSCALE); 659 660 iowrite32(((yscale_UV & FRACT_MASK) << 20) | 661 ((xscale_UV >> FP_SHIFT) << 16) | 662 ((xscale_UV & FRACT_MASK) << 3), 663 ®s->UVSCALE); 664 665 iowrite32((((yscale >> FP_SHIFT) << 16) | 666 ((yscale_UV >> FP_SHIFT) << 0)), 667 ®s->UVSCALEV); 668 669 if (scale_changed) 670 update_polyphase_filter(regs); 671 672 return scale_changed; 673 } 674 675 static void update_colorkey(struct intel_overlay *overlay, 676 struct overlay_registers __iomem *regs) 677 { 678 const struct intel_plane_state *state = 679 to_intel_plane_state(overlay->crtc->base.primary->state); 680 u32 key = overlay->color_key; 681 u32 format = 0; 682 u32 flags = 0; 683 684 if (overlay->color_key_enabled) 685 flags |= DST_KEY_ENABLE; 686 687 if (state->uapi.visible) 688 format = state->hw.fb->format->format; 689 690 switch (format) { 691 case DRM_FORMAT_C8: 692 key = RGB8I_TO_COLORKEY(key); 693 flags |= CLK_RGB24_MASK; 694 break; 695 case DRM_FORMAT_XRGB1555: 696 key = RGB15_TO_COLORKEY(key); 697 flags |= CLK_RGB15_MASK; 698 break; 699 case DRM_FORMAT_RGB565: 700 key = RGB16_TO_COLORKEY(key); 701 flags |= CLK_RGB16_MASK; 702 break; 703 case DRM_FORMAT_XRGB2101010: 704 case DRM_FORMAT_XBGR2101010: 705 key = RGB30_TO_COLORKEY(key); 706 flags |= CLK_RGB24_MASK; 707 break; 708 default: 709 flags |= CLK_RGB24_MASK; 710 break; 711 } 712 713 iowrite32(key, ®s->DCLRKV); 714 iowrite32(flags, ®s->DCLRKM); 715 } 716 717 static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params) 718 { 719 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0; 720 721 if (params->flags & I915_OVERLAY_YUV_PLANAR) { 722 switch (params->flags & I915_OVERLAY_DEPTH_MASK) { 723 case I915_OVERLAY_YUV422: 724 cmd |= OCMD_YUV_422_PLANAR; 725 break; 726 case I915_OVERLAY_YUV420: 727 cmd |= OCMD_YUV_420_PLANAR; 728 break; 729 case I915_OVERLAY_YUV411: 730 case I915_OVERLAY_YUV410: 731 cmd |= OCMD_YUV_410_PLANAR; 732 break; 733 } 734 } else { /* YUV packed */ 735 switch (params->flags & I915_OVERLAY_DEPTH_MASK) { 736 case I915_OVERLAY_YUV422: 737 cmd |= OCMD_YUV_422_PACKED; 738 break; 739 case I915_OVERLAY_YUV411: 740 cmd |= OCMD_YUV_411_PACKED; 741 break; 742 } 743 744 switch (params->flags & I915_OVERLAY_SWAP_MASK) { 745 case I915_OVERLAY_NO_SWAP: 746 break; 747 case I915_OVERLAY_UV_SWAP: 748 cmd |= OCMD_UV_SWAP; 749 break; 750 case I915_OVERLAY_Y_SWAP: 751 cmd |= OCMD_Y_SWAP; 752 break; 753 case I915_OVERLAY_Y_AND_UV_SWAP: 754 cmd |= OCMD_Y_AND_UV_SWAP; 755 break; 756 } 757 } 758 759 return cmd; 760 } 761 762 static struct i915_vma *intel_overlay_pin_fb(struct drm_i915_gem_object *new_bo) 763 { 764 struct i915_gem_ww_ctx ww; 765 struct i915_vma *vma; 766 int ret; 767 768 i915_gem_ww_ctx_init(&ww, true); 769 retry: 770 ret = i915_gem_object_lock(new_bo, &ww); 771 if (!ret) { 772 vma = i915_gem_object_pin_to_display_plane(new_bo, &ww, 0, 773 NULL, PIN_MAPPABLE); 774 ret = PTR_ERR_OR_ZERO(vma); 775 } 776 if (ret == -EDEADLK) { 777 ret = i915_gem_ww_ctx_backoff(&ww); 778 if (!ret) 779 goto retry; 780 } 781 i915_gem_ww_ctx_fini(&ww); 782 if (ret) 783 return ERR_PTR(ret); 784 785 return vma; 786 } 787 788 static int intel_overlay_do_put_image(struct intel_overlay *overlay, 789 struct drm_i915_gem_object *new_bo, 790 struct drm_intel_overlay_put_image *params) 791 { 792 struct overlay_registers __iomem *regs = overlay->regs; 793 struct drm_i915_private *dev_priv = overlay->i915; 794 u32 swidth, swidthsw, sheight, ostride; 795 enum pipe pipe = overlay->crtc->pipe; 796 bool scale_changed = false; 797 struct i915_vma *vma; 798 int ret, tmp_width; 799 800 drm_WARN_ON(&dev_priv->drm, 801 !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex)); 802 803 ret = intel_overlay_release_old_vid(overlay); 804 if (ret != 0) 805 return ret; 806 807 atomic_inc(&dev_priv->gpu_error.pending_fb_pin); 808 809 vma = intel_overlay_pin_fb(new_bo); 810 if (IS_ERR(vma)) { 811 ret = PTR_ERR(vma); 812 goto out_pin_section; 813 } 814 815 i915_gem_object_flush_frontbuffer(new_bo, ORIGIN_DIRTYFB); 816 817 if (!overlay->active) { 818 const struct intel_crtc_state *crtc_state = 819 overlay->crtc->config; 820 u32 oconfig = 0; 821 822 if (crtc_state->gamma_enable && 823 crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) 824 oconfig |= OCONF_CC_OUT_8BIT; 825 if (crtc_state->gamma_enable) 826 oconfig |= OCONF_GAMMA2_ENABLE; 827 if (DISPLAY_VER(dev_priv) == 4) 828 oconfig |= OCONF_CSC_MODE_BT709; 829 oconfig |= pipe == 0 ? 830 OCONF_PIPE_A : OCONF_PIPE_B; 831 iowrite32(oconfig, ®s->OCONFIG); 832 833 ret = intel_overlay_on(overlay); 834 if (ret != 0) 835 goto out_unpin; 836 } 837 838 iowrite32(params->dst_y << 16 | params->dst_x, ®s->DWINPOS); 839 iowrite32(params->dst_height << 16 | params->dst_width, ®s->DWINSZ); 840 841 if (params->flags & I915_OVERLAY_YUV_PACKED) 842 tmp_width = packed_width_bytes(params->flags, 843 params->src_width); 844 else 845 tmp_width = params->src_width; 846 847 swidth = params->src_width; 848 swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width); 849 sheight = params->src_height; 850 iowrite32(i915_ggtt_offset(vma) + params->offset_Y, ®s->OBUF_0Y); 851 ostride = params->stride_Y; 852 853 if (params->flags & I915_OVERLAY_YUV_PLANAR) { 854 int uv_hscale = uv_hsubsampling(params->flags); 855 int uv_vscale = uv_vsubsampling(params->flags); 856 u32 tmp_U, tmp_V; 857 858 swidth |= (params->src_width / uv_hscale) << 16; 859 sheight |= (params->src_height / uv_vscale) << 16; 860 861 tmp_U = calc_swidthsw(dev_priv, params->offset_U, 862 params->src_width / uv_hscale); 863 tmp_V = calc_swidthsw(dev_priv, params->offset_V, 864 params->src_width / uv_hscale); 865 swidthsw |= max(tmp_U, tmp_V) << 16; 866 867 iowrite32(i915_ggtt_offset(vma) + params->offset_U, 868 ®s->OBUF_0U); 869 iowrite32(i915_ggtt_offset(vma) + params->offset_V, 870 ®s->OBUF_0V); 871 872 ostride |= params->stride_UV << 16; 873 } 874 875 iowrite32(swidth, ®s->SWIDTH); 876 iowrite32(swidthsw, ®s->SWIDTHSW); 877 iowrite32(sheight, ®s->SHEIGHT); 878 iowrite32(ostride, ®s->OSTRIDE); 879 880 scale_changed = update_scaling_factors(overlay, regs, params); 881 882 update_colorkey(overlay, regs); 883 884 iowrite32(overlay_cmd_reg(params), ®s->OCMD); 885 886 ret = intel_overlay_continue(overlay, vma, scale_changed); 887 if (ret) 888 goto out_unpin; 889 890 return 0; 891 892 out_unpin: 893 i915_vma_unpin(vma); 894 out_pin_section: 895 atomic_dec(&dev_priv->gpu_error.pending_fb_pin); 896 897 return ret; 898 } 899 900 int intel_overlay_switch_off(struct intel_overlay *overlay) 901 { 902 struct drm_i915_private *dev_priv = overlay->i915; 903 int ret; 904 905 drm_WARN_ON(&dev_priv->drm, 906 !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex)); 907 908 ret = intel_overlay_recover_from_interrupt(overlay); 909 if (ret != 0) 910 return ret; 911 912 if (!overlay->active) 913 return 0; 914 915 ret = intel_overlay_release_old_vid(overlay); 916 if (ret != 0) 917 return ret; 918 919 iowrite32(0, &overlay->regs->OCMD); 920 921 return intel_overlay_off(overlay); 922 } 923 924 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay, 925 struct intel_crtc *crtc) 926 { 927 if (!crtc->active) 928 return -EINVAL; 929 930 /* can't use the overlay with double wide pipe */ 931 if (crtc->config->double_wide) 932 return -EINVAL; 933 934 return 0; 935 } 936 937 static void update_pfit_vscale_ratio(struct intel_overlay *overlay) 938 { 939 struct drm_i915_private *dev_priv = overlay->i915; 940 u32 ratio; 941 942 /* XXX: This is not the same logic as in the xorg driver, but more in 943 * line with the intel documentation for the i965 944 */ 945 if (DISPLAY_VER(dev_priv) >= 4) { 946 u32 tmp = intel_de_read(dev_priv, PFIT_PGM_RATIOS(dev_priv)); 947 948 /* on i965 use the PGM reg to read out the autoscaler values */ 949 ratio = REG_FIELD_GET(PFIT_VERT_SCALE_MASK_965, tmp); 950 } else { 951 u32 tmp; 952 953 if (intel_de_read(dev_priv, PFIT_CONTROL(dev_priv)) & PFIT_VERT_AUTO_SCALE) 954 tmp = intel_de_read(dev_priv, 955 PFIT_AUTO_RATIOS(dev_priv)); 956 else 957 tmp = intel_de_read(dev_priv, 958 PFIT_PGM_RATIOS(dev_priv)); 959 960 ratio = REG_FIELD_GET(PFIT_VERT_SCALE_MASK, tmp); 961 } 962 963 overlay->pfit_vscale_ratio = ratio; 964 } 965 966 static int check_overlay_dst(struct intel_overlay *overlay, 967 struct drm_intel_overlay_put_image *rec) 968 { 969 const struct intel_crtc_state *crtc_state = 970 overlay->crtc->config; 971 struct drm_rect req, clipped; 972 973 drm_rect_init(&req, rec->dst_x, rec->dst_y, 974 rec->dst_width, rec->dst_height); 975 976 clipped = req; 977 978 if (!drm_rect_intersect(&clipped, &crtc_state->pipe_src)) 979 return -EINVAL; 980 981 if (!drm_rect_equals(&clipped, &req)) 982 return -EINVAL; 983 984 return 0; 985 } 986 987 static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec) 988 { 989 u32 tmp; 990 991 /* downscaling limit is 8.0 */ 992 tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16; 993 if (tmp > 7) 994 return -EINVAL; 995 996 tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16; 997 if (tmp > 7) 998 return -EINVAL; 999 1000 return 0; 1001 } 1002 1003 static int check_overlay_src(struct drm_i915_private *dev_priv, 1004 struct drm_intel_overlay_put_image *rec, 1005 struct drm_i915_gem_object *new_bo) 1006 { 1007 int uv_hscale = uv_hsubsampling(rec->flags); 1008 int uv_vscale = uv_vsubsampling(rec->flags); 1009 u32 stride_mask; 1010 int depth; 1011 u32 tmp; 1012 1013 /* check src dimensions */ 1014 if (IS_I845G(dev_priv) || IS_I830(dev_priv)) { 1015 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY || 1016 rec->src_width > IMAGE_MAX_WIDTH_LEGACY) 1017 return -EINVAL; 1018 } else { 1019 if (rec->src_height > IMAGE_MAX_HEIGHT || 1020 rec->src_width > IMAGE_MAX_WIDTH) 1021 return -EINVAL; 1022 } 1023 1024 /* better safe than sorry, use 4 as the maximal subsampling ratio */ 1025 if (rec->src_height < N_VERT_Y_TAPS*4 || 1026 rec->src_width < N_HORIZ_Y_TAPS*4) 1027 return -EINVAL; 1028 1029 /* check alignment constraints */ 1030 switch (rec->flags & I915_OVERLAY_TYPE_MASK) { 1031 case I915_OVERLAY_RGB: 1032 /* not implemented */ 1033 return -EINVAL; 1034 1035 case I915_OVERLAY_YUV_PACKED: 1036 if (uv_vscale != 1) 1037 return -EINVAL; 1038 1039 depth = packed_depth_bytes(rec->flags); 1040 if (depth < 0) 1041 return depth; 1042 1043 /* ignore UV planes */ 1044 rec->stride_UV = 0; 1045 rec->offset_U = 0; 1046 rec->offset_V = 0; 1047 /* check pixel alignment */ 1048 if (rec->offset_Y % depth) 1049 return -EINVAL; 1050 break; 1051 1052 case I915_OVERLAY_YUV_PLANAR: 1053 if (uv_vscale < 0 || uv_hscale < 0) 1054 return -EINVAL; 1055 /* no offset restrictions for planar formats */ 1056 break; 1057 1058 default: 1059 return -EINVAL; 1060 } 1061 1062 if (rec->src_width % uv_hscale) 1063 return -EINVAL; 1064 1065 /* stride checking */ 1066 if (IS_I830(dev_priv) || IS_I845G(dev_priv)) 1067 stride_mask = 255; 1068 else 1069 stride_mask = 63; 1070 1071 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask) 1072 return -EINVAL; 1073 if (DISPLAY_VER(dev_priv) == 4 && rec->stride_Y < 512) 1074 return -EINVAL; 1075 1076 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ? 1077 4096 : 8192; 1078 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024) 1079 return -EINVAL; 1080 1081 /* check buffer dimensions */ 1082 switch (rec->flags & I915_OVERLAY_TYPE_MASK) { 1083 case I915_OVERLAY_RGB: 1084 case I915_OVERLAY_YUV_PACKED: 1085 /* always 4 Y values per depth pixels */ 1086 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y) 1087 return -EINVAL; 1088 1089 tmp = rec->stride_Y*rec->src_height; 1090 if (rec->offset_Y + tmp > new_bo->base.size) 1091 return -EINVAL; 1092 break; 1093 1094 case I915_OVERLAY_YUV_PLANAR: 1095 if (rec->src_width > rec->stride_Y) 1096 return -EINVAL; 1097 if (rec->src_width/uv_hscale > rec->stride_UV) 1098 return -EINVAL; 1099 1100 tmp = rec->stride_Y * rec->src_height; 1101 if (rec->offset_Y + tmp > new_bo->base.size) 1102 return -EINVAL; 1103 1104 tmp = rec->stride_UV * (rec->src_height / uv_vscale); 1105 if (rec->offset_U + tmp > new_bo->base.size || 1106 rec->offset_V + tmp > new_bo->base.size) 1107 return -EINVAL; 1108 break; 1109 } 1110 1111 return 0; 1112 } 1113 1114 int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, 1115 struct drm_file *file_priv) 1116 { 1117 struct drm_intel_overlay_put_image *params = data; 1118 struct drm_i915_private *dev_priv = to_i915(dev); 1119 struct intel_overlay *overlay; 1120 struct drm_crtc *drmmode_crtc; 1121 struct intel_crtc *crtc; 1122 struct drm_i915_gem_object *new_bo; 1123 int ret; 1124 1125 overlay = dev_priv->display.overlay; 1126 if (!overlay) { 1127 drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n"); 1128 return -ENODEV; 1129 } 1130 1131 if (!(params->flags & I915_OVERLAY_ENABLE)) { 1132 drm_modeset_lock_all(dev); 1133 ret = intel_overlay_switch_off(overlay); 1134 drm_modeset_unlock_all(dev); 1135 1136 return ret; 1137 } 1138 1139 drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id); 1140 if (!drmmode_crtc) 1141 return -ENOENT; 1142 crtc = to_intel_crtc(drmmode_crtc); 1143 1144 new_bo = i915_gem_object_lookup(file_priv, params->bo_handle); 1145 if (!new_bo) 1146 return -ENOENT; 1147 1148 drm_modeset_lock_all(dev); 1149 1150 if (i915_gem_object_is_tiled(new_bo)) { 1151 drm_dbg_kms(&dev_priv->drm, 1152 "buffer used for overlay image can not be tiled\n"); 1153 ret = -EINVAL; 1154 goto out_unlock; 1155 } 1156 1157 ret = intel_overlay_recover_from_interrupt(overlay); 1158 if (ret != 0) 1159 goto out_unlock; 1160 1161 if (overlay->crtc != crtc) { 1162 ret = intel_overlay_switch_off(overlay); 1163 if (ret != 0) 1164 goto out_unlock; 1165 1166 ret = check_overlay_possible_on_crtc(overlay, crtc); 1167 if (ret != 0) 1168 goto out_unlock; 1169 1170 overlay->crtc = crtc; 1171 crtc->overlay = overlay; 1172 1173 /* line too wide, i.e. one-line-mode */ 1174 if (drm_rect_width(&crtc->config->pipe_src) > 1024 && 1175 crtc->config->gmch_pfit.control & PFIT_ENABLE) { 1176 overlay->pfit_active = true; 1177 update_pfit_vscale_ratio(overlay); 1178 } else 1179 overlay->pfit_active = false; 1180 } 1181 1182 ret = check_overlay_dst(overlay, params); 1183 if (ret != 0) 1184 goto out_unlock; 1185 1186 if (overlay->pfit_active) { 1187 params->dst_y = (((u32)params->dst_y << 12) / 1188 overlay->pfit_vscale_ratio); 1189 /* shifting right rounds downwards, so add 1 */ 1190 params->dst_height = (((u32)params->dst_height << 12) / 1191 overlay->pfit_vscale_ratio) + 1; 1192 } 1193 1194 if (params->src_scan_height > params->src_height || 1195 params->src_scan_width > params->src_width) { 1196 ret = -EINVAL; 1197 goto out_unlock; 1198 } 1199 1200 ret = check_overlay_src(dev_priv, params, new_bo); 1201 if (ret != 0) 1202 goto out_unlock; 1203 1204 /* Check scaling after src size to prevent a divide-by-zero. */ 1205 ret = check_overlay_scaling(params); 1206 if (ret != 0) 1207 goto out_unlock; 1208 1209 ret = intel_overlay_do_put_image(overlay, new_bo, params); 1210 if (ret != 0) 1211 goto out_unlock; 1212 1213 drm_modeset_unlock_all(dev); 1214 i915_gem_object_put(new_bo); 1215 1216 return 0; 1217 1218 out_unlock: 1219 drm_modeset_unlock_all(dev); 1220 i915_gem_object_put(new_bo); 1221 1222 return ret; 1223 } 1224 1225 static void update_reg_attrs(struct intel_overlay *overlay, 1226 struct overlay_registers __iomem *regs) 1227 { 1228 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff), 1229 ®s->OCLRC0); 1230 iowrite32(overlay->saturation, ®s->OCLRC1); 1231 } 1232 1233 static bool check_gamma_bounds(u32 gamma1, u32 gamma2) 1234 { 1235 int i; 1236 1237 if (gamma1 & 0xff000000 || gamma2 & 0xff000000) 1238 return false; 1239 1240 for (i = 0; i < 3; i++) { 1241 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff)) 1242 return false; 1243 } 1244 1245 return true; 1246 } 1247 1248 static bool check_gamma5_errata(u32 gamma5) 1249 { 1250 int i; 1251 1252 for (i = 0; i < 3; i++) { 1253 if (((gamma5 >> i*8) & 0xff) == 0x80) 1254 return false; 1255 } 1256 1257 return true; 1258 } 1259 1260 static int check_gamma(struct drm_intel_overlay_attrs *attrs) 1261 { 1262 if (!check_gamma_bounds(0, attrs->gamma0) || 1263 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) || 1264 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) || 1265 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) || 1266 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) || 1267 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) || 1268 !check_gamma_bounds(attrs->gamma5, 0x00ffffff)) 1269 return -EINVAL; 1270 1271 if (!check_gamma5_errata(attrs->gamma5)) 1272 return -EINVAL; 1273 1274 return 0; 1275 } 1276 1277 int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data, 1278 struct drm_file *file_priv) 1279 { 1280 struct drm_intel_overlay_attrs *attrs = data; 1281 struct drm_i915_private *dev_priv = to_i915(dev); 1282 struct intel_overlay *overlay; 1283 int ret; 1284 1285 overlay = dev_priv->display.overlay; 1286 if (!overlay) { 1287 drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n"); 1288 return -ENODEV; 1289 } 1290 1291 drm_modeset_lock_all(dev); 1292 1293 ret = -EINVAL; 1294 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) { 1295 attrs->color_key = overlay->color_key; 1296 attrs->brightness = overlay->brightness; 1297 attrs->contrast = overlay->contrast; 1298 attrs->saturation = overlay->saturation; 1299 1300 if (DISPLAY_VER(dev_priv) != 2) { 1301 attrs->gamma0 = intel_de_read(dev_priv, OGAMC0); 1302 attrs->gamma1 = intel_de_read(dev_priv, OGAMC1); 1303 attrs->gamma2 = intel_de_read(dev_priv, OGAMC2); 1304 attrs->gamma3 = intel_de_read(dev_priv, OGAMC3); 1305 attrs->gamma4 = intel_de_read(dev_priv, OGAMC4); 1306 attrs->gamma5 = intel_de_read(dev_priv, OGAMC5); 1307 } 1308 } else { 1309 if (attrs->brightness < -128 || attrs->brightness > 127) 1310 goto out_unlock; 1311 if (attrs->contrast > 255) 1312 goto out_unlock; 1313 if (attrs->saturation > 1023) 1314 goto out_unlock; 1315 1316 overlay->color_key = attrs->color_key; 1317 overlay->brightness = attrs->brightness; 1318 overlay->contrast = attrs->contrast; 1319 overlay->saturation = attrs->saturation; 1320 1321 update_reg_attrs(overlay, overlay->regs); 1322 1323 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) { 1324 if (DISPLAY_VER(dev_priv) == 2) 1325 goto out_unlock; 1326 1327 if (overlay->active) { 1328 ret = -EBUSY; 1329 goto out_unlock; 1330 } 1331 1332 ret = check_gamma(attrs); 1333 if (ret) 1334 goto out_unlock; 1335 1336 intel_de_write(dev_priv, OGAMC0, attrs->gamma0); 1337 intel_de_write(dev_priv, OGAMC1, attrs->gamma1); 1338 intel_de_write(dev_priv, OGAMC2, attrs->gamma2); 1339 intel_de_write(dev_priv, OGAMC3, attrs->gamma3); 1340 intel_de_write(dev_priv, OGAMC4, attrs->gamma4); 1341 intel_de_write(dev_priv, OGAMC5, attrs->gamma5); 1342 } 1343 } 1344 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0; 1345 1346 ret = 0; 1347 out_unlock: 1348 drm_modeset_unlock_all(dev); 1349 1350 return ret; 1351 } 1352 1353 static int get_registers(struct intel_overlay *overlay, bool use_phys) 1354 { 1355 struct drm_i915_private *i915 = overlay->i915; 1356 struct drm_i915_gem_object *obj = ERR_PTR(-ENODEV); 1357 struct i915_vma *vma; 1358 int err; 1359 1360 if (!IS_METEORLAKE(i915)) /* Wa_22018444074 */ 1361 obj = i915_gem_object_create_stolen(i915, PAGE_SIZE); 1362 if (IS_ERR(obj)) 1363 obj = i915_gem_object_create_internal(i915, PAGE_SIZE); 1364 if (IS_ERR(obj)) 1365 return PTR_ERR(obj); 1366 1367 vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE); 1368 if (IS_ERR(vma)) { 1369 err = PTR_ERR(vma); 1370 goto err_put_bo; 1371 } 1372 1373 if (use_phys) 1374 overlay->flip_addr = sg_dma_address(obj->mm.pages->sgl); 1375 else 1376 overlay->flip_addr = i915_ggtt_offset(vma); 1377 overlay->regs = i915_vma_pin_iomap(vma); 1378 i915_vma_unpin(vma); 1379 1380 if (IS_ERR(overlay->regs)) { 1381 err = PTR_ERR(overlay->regs); 1382 goto err_put_bo; 1383 } 1384 1385 overlay->reg_bo = obj; 1386 return 0; 1387 1388 err_put_bo: 1389 i915_gem_object_put(obj); 1390 return err; 1391 } 1392 1393 void intel_overlay_setup(struct drm_i915_private *dev_priv) 1394 { 1395 struct intel_overlay *overlay; 1396 struct intel_engine_cs *engine; 1397 int ret; 1398 1399 if (!HAS_OVERLAY(dev_priv)) 1400 return; 1401 1402 engine = to_gt(dev_priv)->engine[RCS0]; 1403 if (!engine || !engine->kernel_context) 1404 return; 1405 1406 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL); 1407 if (!overlay) 1408 return; 1409 1410 overlay->i915 = dev_priv; 1411 overlay->context = engine->kernel_context; 1412 overlay->color_key = 0x0101fe; 1413 overlay->color_key_enabled = true; 1414 overlay->brightness = -19; 1415 overlay->contrast = 75; 1416 overlay->saturation = 146; 1417 1418 i915_active_init(&overlay->last_flip, 1419 NULL, intel_overlay_last_flip_retire, 0); 1420 1421 ret = get_registers(overlay, OVERLAY_NEEDS_PHYSICAL(dev_priv)); 1422 if (ret) 1423 goto out_free; 1424 1425 memset_io(overlay->regs, 0, sizeof(struct overlay_registers)); 1426 update_polyphase_filter(overlay->regs); 1427 update_reg_attrs(overlay, overlay->regs); 1428 1429 dev_priv->display.overlay = overlay; 1430 drm_info(&dev_priv->drm, "Initialized overlay support.\n"); 1431 return; 1432 1433 out_free: 1434 kfree(overlay); 1435 } 1436 1437 void intel_overlay_cleanup(struct drm_i915_private *dev_priv) 1438 { 1439 struct intel_overlay *overlay; 1440 1441 overlay = fetch_and_zero(&dev_priv->display.overlay); 1442 if (!overlay) 1443 return; 1444 1445 /* 1446 * The bo's should be free'd by the generic code already. 1447 * Furthermore modesetting teardown happens beforehand so the 1448 * hardware should be off already. 1449 */ 1450 drm_WARN_ON(&dev_priv->drm, overlay->active); 1451 1452 i915_gem_object_put(overlay->reg_bo); 1453 i915_active_fini(&overlay->last_flip); 1454 1455 kfree(overlay); 1456 } 1457 1458 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) 1459 1460 struct intel_overlay_error_state { 1461 struct overlay_registers regs; 1462 unsigned long base; 1463 u32 dovsta; 1464 u32 isr; 1465 }; 1466 1467 struct intel_overlay_error_state * 1468 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv) 1469 { 1470 struct intel_overlay *overlay = dev_priv->display.overlay; 1471 struct intel_overlay_error_state *error; 1472 1473 if (!overlay || !overlay->active) 1474 return NULL; 1475 1476 error = kmalloc(sizeof(*error), GFP_ATOMIC); 1477 if (error == NULL) 1478 return NULL; 1479 1480 error->dovsta = intel_de_read(dev_priv, DOVSTA); 1481 error->isr = intel_de_read(dev_priv, GEN2_ISR); 1482 error->base = overlay->flip_addr; 1483 1484 memcpy_fromio(&error->regs, overlay->regs, sizeof(error->regs)); 1485 1486 return error; 1487 } 1488 1489 void 1490 intel_overlay_print_error_state(struct drm_printer *p, 1491 struct intel_overlay_error_state *error) 1492 { 1493 drm_printf(p, "Overlay, status: 0x%08x, interrupt: 0x%08x\n", 1494 error->dovsta, error->isr); 1495 drm_printf(p, " Register file at 0x%08lx:\n", error->base); 1496 1497 #define P(x) drm_printf(p, " " #x ": 0x%08x\n", error->regs.x) 1498 P(OBUF_0Y); 1499 P(OBUF_1Y); 1500 P(OBUF_0U); 1501 P(OBUF_0V); 1502 P(OBUF_1U); 1503 P(OBUF_1V); 1504 P(OSTRIDE); 1505 P(YRGB_VPH); 1506 P(UV_VPH); 1507 P(HORZ_PH); 1508 P(INIT_PHS); 1509 P(DWINPOS); 1510 P(DWINSZ); 1511 P(SWIDTH); 1512 P(SWIDTHSW); 1513 P(SHEIGHT); 1514 P(YRGBSCALE); 1515 P(UVSCALE); 1516 P(OCLRC0); 1517 P(OCLRC1); 1518 P(DCLRKV); 1519 P(DCLRKM); 1520 P(SCLRKVH); 1521 P(SCLRKVL); 1522 P(SCLRKEN); 1523 P(OCONFIG); 1524 P(OCMD); 1525 P(OSTART_0Y); 1526 P(OSTART_1Y); 1527 P(OSTART_0U); 1528 P(OSTART_0V); 1529 P(OSTART_1U); 1530 P(OSTART_1V); 1531 P(OTILEOFF_0Y); 1532 P(OTILEOFF_1Y); 1533 P(OTILEOFF_0U); 1534 P(OTILEOFF_0V); 1535 P(OTILEOFF_1U); 1536 P(OTILEOFF_1V); 1537 P(FASTHSCALE); 1538 P(UVSCALEV); 1539 #undef P 1540 } 1541 1542 #endif 1543