drivers/gpu/drm/i915/i915_drv.h

   1 /* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
   2  */
   3 /*
   4  *
   5  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  */
  29
  30 #ifndef _I915_DRV_H_
  31 #define _I915_DRV_H_
  32
  33 #include <uapi/drm/i915_drm.h>
  34 #include <uapi/drm/drm_fourcc.h>
  35
  36 #include <asm/hypervisor.h>
  37
  38 #include <linux/io-mapping.h>
  39 #include <linux/i2c.h>
  40 #include <linux/i2c-algo-bit.h>
  41 #include <linux/backlight.h>
  42 #include <linux/hash.h>
  43 #include <linux/intel-iommu.h>
  44 #include <linux/kref.h>
  45 #include <linux/mm_types.h>
  46 #include <linux/perf_event.h>
  47 #include <linux/pm_qos.h>
  48 #include <linux/dma-resv.h>
  49 #include <linux/shmem_fs.h>
  50 #include <linux/stackdepot.h>
  51 #include <linux/xarray.h>
  52
  53 #include <drm/intel-gtt.h>
  54 #include <drm/drm_legacy.h> /* for struct drm_dma_handle */
  55 #include <drm/drm_gem.h>
  56 #include <drm/drm_auth.h>
  57 #include <drm/drm_cache.h>
  58 #include <drm/drm_util.h>
  59 #include <drm/drm_dsc.h>
  60 #include <drm/drm_atomic.h>
  61 #include <drm/drm_connector.h>
  62 #include <drm/i915_mei_hdcp_interface.h>
  63
  64 #include "i915_params.h"
  65 #include "i915_reg.h"
  66 #include "i915_utils.h"
  67
  68 #include "display/intel_bios.h"
  69 #include "display/intel_display.h"
  70 #include "display/intel_display_power.h"
  71 #include "display/intel_dpll_mgr.h"
  72 #include "display/intel_dsb.h"
  73 #include "display/intel_frontbuffer.h"
  74 #include "display/intel_global_state.h"
  75 #include "display/intel_gmbus.h"
  76 #include "display/intel_opregion.h"
  77
  78 #include "gem/i915_gem_context_types.h"
  79 #include "gem/i915_gem_shrinker.h"
  80 #include "gem/i915_gem_stolen.h"
  81
  82 #include "gt/intel_lrc.h"
  83 #include "gt/intel_engine.h"
  84 #include "gt/intel_gt_types.h"
  85 #include "gt/intel_workarounds.h"
  86 #include "gt/uc/intel_uc.h"
  87
  88 #include "intel_device_info.h"
  89 #include "intel_pch.h"
  90 #include "intel_runtime_pm.h"
  91 #include "intel_memory_region.h"
  92 #include "intel_uncore.h"
  93 #include "intel_wakeref.h"
  94 #include "intel_wopcm.h"
  95
  96 #include "i915_gem.h"
  97 #include "i915_gem_gtt.h"
  98 #include "i915_gpu_error.h"
  99 #include "i915_perf_types.h"
 100 #include "i915_request.h"
 101 #include "i915_scheduler.h"
 102 #include "gt/intel_timeline.h"
 103 #include "i915_vma.h"
 104 #include "i915_irq.h"
 105
 106 #include "intel_region_lmem.h"
 107
 108 /* General customization:
 109  */
 110
 111 #define DRIVER_NAME             "i915"
 112 #define DRIVER_DESC             "Intel Graphics"
 113 #define DRIVER_DATE             "20201103"
 114 #define DRIVER_TIMESTAMP        1604406085
 115
 116 struct drm_i915_gem_object;
 117
 118 enum hpd_pin {
 119         HPD_NONE = 0,
 120         HPD_TV = HPD_NONE,     /* TV is known to be unreliable */
 121         HPD_CRT,
 122         HPD_SDVO_B,
 123         HPD_SDVO_C,
 124         HPD_PORT_A,
 125         HPD_PORT_B,
 126         HPD_PORT_C,
 127         HPD_PORT_D,
 128         HPD_PORT_E,
 129         HPD_PORT_TC1,
 130         HPD_PORT_TC2,
 131         HPD_PORT_TC3,
 132         HPD_PORT_TC4,
 133         HPD_PORT_TC5,
 134         HPD_PORT_TC6,
 135
 136         HPD_NUM_PINS
 137 };
 138
 139 #define for_each_hpd_pin(__pin) \
 140         for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
 141
 142 /* Threshold == 5 for long IRQs, 50 for short */
 143 #define HPD_STORM_DEFAULT_THRESHOLD 50
 144
 145 struct i915_hotplug {
 146         struct delayed_work hotplug_work;
 147
 148         const u32 *hpd, *pch_hpd;
 149
 150         struct {
 151                 unsigned long last_jiffies;
 152                 int count;
 153                 enum {
 154                         HPD_ENABLED = 0,
 155                         HPD_DISABLED = 1,
 156                         HPD_MARK_DISABLED = 2
 157                 } state;
 158         } stats[HPD_NUM_PINS];
 159         u32 event_bits;
 160         u32 retry_bits;
 161         struct delayed_work reenable_work;
 162
 163         u32 long_port_mask;
 164         u32 short_port_mask;
 165         struct work_struct dig_port_work;
 166
 167         struct work_struct poll_init_work;
 168         bool poll_enabled;
 169
 170         unsigned int hpd_storm_threshold;
 171         /* Whether or not to count short HPD IRQs in HPD storms */
 172         u8 hpd_short_storm_enabled;
 173
 174         /*
 175          * if we get a HPD irq from DP and a HPD irq from non-DP
 176          * the non-DP HPD could block the workqueue on a mode config
 177          * mutex getting, that userspace may have taken. However
 178          * userspace is waiting on the DP workqueue to run which is
 179          * blocked behind the non-DP one.
 180          */
 181         struct workqueue_struct *dp_wq;
 182 };
 183
 184 #define I915_GEM_GPU_DOMAINS \
 185         (I915_GEM_DOMAIN_RENDER | \
 186          I915_GEM_DOMAIN_SAMPLER | \
 187          I915_GEM_DOMAIN_COMMAND | \
 188          I915_GEM_DOMAIN_INSTRUCTION | \
 189          I915_GEM_DOMAIN_VERTEX)
 190
 191 struct drm_i915_private;
 192 struct i915_mm_struct;
 193 struct i915_mmu_object;
 194
 195 struct drm_i915_file_private {
 196         struct drm_i915_private *dev_priv;
 197
 198         union {
 199                 struct drm_file *file;
 200                 struct rcu_head rcu;
 201         };
 202
 203         struct xarray context_xa;
 204         struct xarray vm_xa;
 205
 206         unsigned int bsd_engine;
 207
 208 /*
 209  * Every context ban increments per client ban score. Also
 210  * hangs in short succession increments ban score. If ban threshold
 211  * is reached, client is considered banned and submitting more work
 212  * will fail. This is a stop gap measure to limit the badly behaving
 213  * clients access to gpu. Note that unbannable contexts never increment
 214  * the client ban score.
 215  */
 216 #define I915_CLIENT_SCORE_HANG_FAST     1
 217 #define   I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
 218 #define I915_CLIENT_SCORE_CONTEXT_BAN   3
 219 #define I915_CLIENT_SCORE_BANNED        9
 220         /** ban_score: Accumulated score of all ctx bans and fast hangs. */
 221         atomic_t ban_score;
 222         unsigned long hang_timestamp;
 223 };
 224
 225 /* Interface history:
 226  *
 227  * 1.1: Original.
 228  * 1.2: Add Power Management
 229  * 1.3: Add vblank support
 230  * 1.4: Fix cmdbuffer path, add heap destroy
 231  * 1.5: Add vblank pipe configuration
 232  * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
 233  *      - Support vertical blank on secondary display pipe
 234  */
 235 #define DRIVER_MAJOR            1
 236 #define DRIVER_MINOR            6
 237 #define DRIVER_PATCHLEVEL       0
 238
 239 struct intel_overlay;
 240 struct intel_overlay_error_state;
 241
 242 struct sdvo_device_mapping {
 243         u8 initialized;
 244         u8 dvo_port;
 245         u8 slave_addr;
 246         u8 dvo_wiring;
 247         u8 i2c_pin;
 248         u8 ddc_pin;
 249 };
 250
 251 struct intel_connector;
 252 struct intel_encoder;
 253 struct intel_atomic_state;
 254 struct intel_cdclk_config;
 255 struct intel_cdclk_state;
 256 struct intel_cdclk_vals;
 257 struct intel_initial_plane_config;
 258 struct intel_crtc;
 259 struct intel_limit;
 260 struct dpll;
 261
 262 struct drm_i915_display_funcs {
 263         void (*get_cdclk)(struct drm_i915_private *dev_priv,
 264                           struct intel_cdclk_config *cdclk_config);
 265         void (*set_cdclk)(struct drm_i915_private *dev_priv,
 266                           const struct intel_cdclk_config *cdclk_config,
 267                           enum pipe pipe);
 268         int (*bw_calc_min_cdclk)(struct intel_atomic_state *state);
 269         int (*get_fifo_size)(struct drm_i915_private *dev_priv,
 270                              enum i9xx_plane_id i9xx_plane);
 271         int (*compute_pipe_wm)(struct intel_crtc_state *crtc_state);
 272         int (*compute_intermediate_wm)(struct intel_crtc_state *crtc_state);
 273         void (*initial_watermarks)(struct intel_atomic_state *state,
 274                                    struct intel_crtc *crtc);
 275         void (*atomic_update_watermarks)(struct intel_atomic_state *state,
 276                                          struct intel_crtc *crtc);
 277         void (*optimize_watermarks)(struct intel_atomic_state *state,
 278                                     struct intel_crtc *crtc);
 279         int (*compute_global_watermarks)(struct intel_atomic_state *state);
 280         void (*update_wm)(struct intel_crtc *crtc);
 281         int (*modeset_calc_cdclk)(struct intel_cdclk_state *state);
 282         u8 (*calc_voltage_level)(int cdclk);
 283         /* Returns the active state of the crtc, and if the crtc is active,
 284          * fills out the pipe-config with the hw state. */
 285         bool (*get_pipe_config)(struct intel_crtc *,
 286                                 struct intel_crtc_state *);
 287         void (*get_initial_plane_config)(struct intel_crtc *,
 288                                          struct intel_initial_plane_config *);
 289         int (*crtc_compute_clock)(struct intel_crtc *crtc,
 290                                   struct intel_crtc_state *crtc_state);
 291         void (*crtc_enable)(struct intel_atomic_state *state,
 292                             struct intel_crtc *crtc);
 293         void (*crtc_disable)(struct intel_atomic_state *state,
 294                              struct intel_crtc *crtc);
 295         void (*commit_modeset_enables)(struct intel_atomic_state *state);
 296         void (*commit_modeset_disables)(struct intel_atomic_state *state);
 297         void (*audio_codec_enable)(struct intel_encoder *encoder,
 298                                    const struct intel_crtc_state *crtc_state,
 299                                    const struct drm_connector_state *conn_state);
 300         void (*audio_codec_disable)(struct intel_encoder *encoder,
 301                                     const struct intel_crtc_state *old_crtc_state,
 302                                     const struct drm_connector_state *old_conn_state);
 303         void (*fdi_link_train)(struct intel_crtc *crtc,
 304                                const struct intel_crtc_state *crtc_state);
 305         void (*init_clock_gating)(struct drm_i915_private *dev_priv);
 306         void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
 307         /* clock updates for mode set */
 308         /* cursor updates */
 309         /* render clock increase/decrease */
 310         /* display clock increase/decrease */
 311         /* pll clock increase/decrease */
 312
 313         int (*color_check)(struct intel_crtc_state *crtc_state);
 314         /*
 315          * Program double buffered color management registers during
 316          * vblank evasion. The registers should then latch during the
 317          * next vblank start, alongside any other double buffered registers
 318          * involved with the same commit.
 319          */
 320         void (*color_commit)(const struct intel_crtc_state *crtc_state);
 321         /*
 322          * Load LUTs (and other single buffered color management
 323          * registers). Will (hopefully) be called during the vblank
 324          * following the latching of any double buffered registers
 325          * involved with the same commit.
 326          */
 327         void (*load_luts)(const struct intel_crtc_state *crtc_state);
 328         void (*read_luts)(struct intel_crtc_state *crtc_state);
 329 };
 330
 331 struct intel_csr {
 332         struct work_struct work;
 333         const char *fw_path;
 334         u32 required_version;
 335         u32 max_fw_size; /* bytes */
 336         u32 *dmc_payload;
 337         u32 dmc_fw_size; /* dwords */
 338         u32 version;
 339         u32 mmio_count;
 340         i915_reg_t mmioaddr[20];
 341         u32 mmiodata[20];
 342         u32 dc_state;
 343         u32 target_dc_state;
 344         u32 allowed_dc_mask;
 345         intel_wakeref_t wakeref;
 346 };
 347
 348 enum i915_cache_level {
 349         I915_CACHE_NONE = 0,
 350         I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
 351         I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
 352                               caches, eg sampler/render caches, and the
 353                               large Last-Level-Cache. LLC is coherent with
 354                               the CPU, but L3 is only visible to the GPU. */
 355         I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
 356 };
 357
 358 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
 359
 360 struct intel_fbc {
 361         /* This is always the inner lock when overlapping with struct_mutex and
 362          * it's the outer lock when overlapping with stolen_lock. */
 363         struct mutex lock;
 364         unsigned threshold;
 365         unsigned int possible_framebuffer_bits;
 366         unsigned int busy_bits;
 367         struct intel_crtc *crtc;
 368
 369         struct drm_mm_node compressed_fb;
 370         struct drm_mm_node *compressed_llb;
 371
 372         bool false_color;
 373
 374         bool active;
 375         bool activated;
 376         bool flip_pending;
 377
 378         bool underrun_detected;
 379         struct work_struct underrun_work;
 380
 381         /*
 382          * Due to the atomic rules we can't access some structures without the
 383          * appropriate locking, so we cache information here in order to avoid
 384          * these problems.
 385          */
 386         struct intel_fbc_state_cache {
 387                 struct {
 388                         unsigned int mode_flags;
 389                         u32 hsw_bdw_pixel_rate;
 390                 } crtc;
 391
 392                 struct {
 393                         unsigned int rotation;
 394                         int src_w;
 395                         int src_h;
 396                         bool visible;
 397                         /*
 398                          * Display surface base address adjustement for
 399                          * pageflips. Note that on gen4+ this only adjusts up
 400                          * to a tile, offsets within a tile are handled in
 401                          * the hw itself (with the TILEOFF register).
 402                          */
 403                         int adjusted_x;
 404                         int adjusted_y;
 405
 406                         u16 pixel_blend_mode;
 407                 } plane;
 408
 409                 struct {
 410                         const struct drm_format_info *format;
 411                         unsigned int stride;
 412                         u64 modifier;
 413                 } fb;
 414
 415                 unsigned int fence_y_offset;
 416                 u16 gen9_wa_cfb_stride;
 417                 u16 interval;
 418                 s8 fence_id;
 419         } state_cache;
 420
 421         /*
 422          * This structure contains everything that's relevant to program the
 423          * hardware registers. When we want to figure out if we need to disable
 424          * and re-enable FBC for a new configuration we just check if there's
 425          * something different in the struct. The genx_fbc_activate functions
 426          * are supposed to read from it in order to program the registers.
 427          */
 428         struct intel_fbc_reg_params {
 429                 struct {
 430                         enum pipe pipe;
 431                         enum i9xx_plane_id i9xx_plane;
 432                 } crtc;
 433
 434                 struct {
 435                         const struct drm_format_info *format;
 436                         unsigned int stride;
 437                         u64 modifier;
 438                 } fb;
 439
 440                 int cfb_size;
 441                 unsigned int fence_y_offset;
 442                 u16 gen9_wa_cfb_stride;
 443                 u16 interval;
 444                 s8 fence_id;
 445                 bool plane_visible;
 446         } params;
 447
 448         const char *no_fbc_reason;
 449 };
 450
 451 /*
 452  * HIGH_RR is the highest eDP panel refresh rate read from EDID
 453  * LOW_RR is the lowest eDP panel refresh rate found from EDID
 454  * parsing for same resolution.
 455  */
 456 enum drrs_refresh_rate_type {
 457         DRRS_HIGH_RR,
 458         DRRS_LOW_RR,
 459         DRRS_MAX_RR, /* RR count */
 460 };
 461
 462 enum drrs_support_type {
 463         DRRS_NOT_SUPPORTED = 0,
 464         STATIC_DRRS_SUPPORT = 1,
 465         SEAMLESS_DRRS_SUPPORT = 2
 466 };
 467
 468 struct intel_dp;
 469 struct i915_drrs {
 470         struct mutex mutex;
 471         struct delayed_work work;
 472         struct intel_dp *dp;
 473         unsigned busy_frontbuffer_bits;
 474         enum drrs_refresh_rate_type refresh_rate_type;
 475         enum drrs_support_type type;
 476 };
 477
 478 struct i915_psr {
 479         struct mutex lock;
 480
 481 #define I915_PSR_DEBUG_MODE_MASK        0x0f
 482 #define I915_PSR_DEBUG_DEFAULT          0x00
 483 #define I915_PSR_DEBUG_DISABLE          0x01
 484 #define I915_PSR_DEBUG_ENABLE           0x02
 485 #define I915_PSR_DEBUG_FORCE_PSR1       0x03
 486 #define I915_PSR_DEBUG_IRQ              0x10
 487
 488         u32 debug;
 489         bool sink_support;
 490         bool enabled;
 491         struct intel_dp *dp;
 492         enum pipe pipe;
 493         enum transcoder transcoder;
 494         bool active;
 495         struct work_struct work;
 496         unsigned busy_frontbuffer_bits;
 497         bool sink_psr2_support;
 498         bool link_standby;
 499         bool colorimetry_support;
 500         bool psr2_enabled;
 501         bool psr2_sel_fetch_enabled;
 502         u8 sink_sync_latency;
 503         ktime_t last_entry_attempt;
 504         ktime_t last_exit;
 505         bool sink_not_reliable;
 506         bool irq_aux_error;
 507         u16 su_x_granularity;
 508         bool dc3co_enabled;
 509         u32 dc3co_exit_delay;
 510         struct delayed_work dc3co_work;
 511         struct drm_dp_vsc_sdp vsc;
 512 };
 513
 514 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
 515 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
 516 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
 517 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
 518 #define QUIRK_INCREASE_T12_DELAY (1<<6)
 519 #define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
 520
 521 struct intel_fbdev;
 522 struct intel_fbc_work;
 523
 524 struct intel_gmbus {
 525         struct i2c_adapter adapter;
 526 #define GMBUS_FORCE_BIT_RETRY (1U << 31)
 527         u32 force_bit;
 528         u32 reg0;
 529         i915_reg_t gpio_reg;
 530         struct i2c_algo_bit_data bit_algo;
 531         struct drm_i915_private *dev_priv;
 532 };
 533
 534 struct i915_suspend_saved_registers {
 535         u32 saveDSPARB;
 536         u32 saveSWF0[16];
 537         u32 saveSWF1[16];
 538         u32 saveSWF3[3];
 539         u16 saveGCDGMBUS;
 540 };
 541
 542 struct vlv_s0ix_state;
 543
 544 #define MAX_L3_SLICES 2
 545 struct intel_l3_parity {
 546         u32 *remap_info[MAX_L3_SLICES];
 547         struct work_struct error_work;
 548         int which_slice;
 549 };
 550
 551 struct i915_gem_mm {
 552         /** Memory allocator for GTT stolen memory */
 553         struct drm_mm stolen;
 554         /** Protects the usage of the GTT stolen memory allocator. This is
 555          * always the inner lock when overlapping with struct_mutex. */
 556         struct mutex stolen_lock;
 557
 558         /* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
 559         spinlock_t obj_lock;
 560
 561         /**
 562          * List of objects which are purgeable.
 563          */
 564         struct list_head purge_list;
 565
 566         /**
 567          * List of objects which have allocated pages and are shrinkable.
 568          */
 569         struct list_head shrink_list;
 570
 571         /**
 572          * List of objects which are pending destruction.
 573          */
 574         struct llist_head free_list;
 575         struct work_struct free_work;
 576         /**
 577          * Count of objects pending destructions. Used to skip needlessly
 578          * waiting on an RCU barrier if no objects are waiting to be freed.
 579          */
 580         atomic_t free_count;
 581
 582         /**
 583          * tmpfs instance used for shmem backed objects
 584          */
 585         struct vfsmount *gemfs;
 586
 587         struct intel_memory_region *regions[INTEL_REGION_UNKNOWN];
 588
 589         struct notifier_block oom_notifier;
 590         struct notifier_block vmap_notifier;
 591         struct shrinker shrinker;
 592
 593         /**
 594          * Workqueue to fault in userptr pages, flushed by the execbuf
 595          * when required but otherwise left to userspace to try again
 596          * on EAGAIN.
 597          */
 598         struct workqueue_struct *userptr_wq;
 599
 600         /* shrinker accounting, also useful for userland debugging */
 601         u64 shrink_memory;
 602         u32 shrink_count;
 603 };
 604
 605 #define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
 606
 607 unsigned long i915_fence_context_timeout(const struct drm_i915_private *i915,
 608                                          u64 context);
 609
 610 static inline unsigned long
 611 i915_fence_timeout(const struct drm_i915_private *i915)
 612 {
 613         return i915_fence_context_timeout(i915, U64_MAX);
 614 }
 615
 616 /* Amount of SAGV/QGV points, BSpec precisely defines this */
 617 #define I915_NUM_QGV_POINTS 8
 618
 619 struct ddi_vbt_port_info {
 620         /* Non-NULL if port present. */
 621         const struct child_device_config *child;
 622
 623         int max_tmds_clock;
 624
 625         /* This is an index in the HDMI/DVI DDI buffer translation table. */
 626         u8 hdmi_level_shift;
 627         u8 hdmi_level_shift_set:1;
 628
 629         u8 supports_dvi:1;
 630         u8 supports_hdmi:1;
 631         u8 supports_dp:1;
 632         u8 supports_edp:1;
 633         u8 supports_typec_usb:1;
 634         u8 supports_tbt:1;
 635
 636         u8 alternate_aux_channel;
 637         u8 alternate_ddc_pin;
 638
 639         u8 dp_boost_level;
 640         u8 hdmi_boost_level;
 641         int dp_max_link_rate;           /* 0 for not limited by VBT */
 642 };
 643
 644 enum psr_lines_to_wait {
 645         PSR_0_LINES_TO_WAIT = 0,
 646         PSR_1_LINE_TO_WAIT,
 647         PSR_4_LINES_TO_WAIT,
 648         PSR_8_LINES_TO_WAIT
 649 };
 650
 651 struct intel_vbt_data {
 652         struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
 653         struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
 654
 655         /* Feature bits */
 656         unsigned int int_tv_support:1;
 657         unsigned int lvds_dither:1;
 658         unsigned int int_crt_support:1;
 659         unsigned int lvds_use_ssc:1;
 660         unsigned int int_lvds_support:1;
 661         unsigned int display_clock_mode:1;
 662         unsigned int fdi_rx_polarity_inverted:1;
 663         unsigned int panel_type:4;
 664         int lvds_ssc_freq;
 665         unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
 666         enum drm_panel_orientation orientation;
 667
 668         enum drrs_support_type drrs_type;
 669
 670         struct {
 671                 int rate;
 672                 int lanes;
 673                 int preemphasis;
 674                 int vswing;
 675                 bool low_vswing;
 676                 bool initialized;
 677                 int bpp;
 678                 struct edp_power_seq pps;
 679                 bool hobl;
 680         } edp;
 681
 682         struct {
 683                 bool enable;
 684                 bool full_link;
 685                 bool require_aux_wakeup;
 686                 int idle_frames;
 687                 enum psr_lines_to_wait lines_to_wait;
 688                 int tp1_wakeup_time_us;
 689                 int tp2_tp3_wakeup_time_us;
 690                 int psr2_tp2_tp3_wakeup_time_us;
 691         } psr;
 692
 693         struct {
 694                 u16 pwm_freq_hz;
 695                 bool present;
 696                 bool active_low_pwm;
 697                 u8 min_brightness;      /* min_brightness/255 of max */
 698                 u8 controller;          /* brightness controller number */
 699                 enum intel_backlight_type type;
 700         } backlight;
 701
 702         /* MIPI DSI */
 703         struct {
 704                 u16 panel_id;
 705                 struct mipi_config *config;
 706                 struct mipi_pps_data *pps;
 707                 u16 bl_ports;
 708                 u16 cabc_ports;
 709                 u8 seq_version;
 710                 u32 size;
 711                 u8 *data;
 712                 const u8 *sequence[MIPI_SEQ_MAX];
 713                 u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
 714                 enum drm_panel_orientation orientation;
 715         } dsi;
 716
 717         int crt_ddc_pin;
 718
 719         struct list_head display_devices;
 720
 721         struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
 722         struct sdvo_device_mapping sdvo_mappings[2];
 723 };
 724
 725 enum intel_ddb_partitioning {
 726         INTEL_DDB_PART_1_2,
 727         INTEL_DDB_PART_5_6, /* IVB+ */
 728 };
 729
 730 struct ilk_wm_values {
 731         u32 wm_pipe[3];
 732         u32 wm_lp[3];
 733         u32 wm_lp_spr[3];
 734         bool enable_fbc_wm;
 735         enum intel_ddb_partitioning partitioning;
 736 };
 737
 738 struct g4x_pipe_wm {
 739         u16 plane[I915_MAX_PLANES];
 740         u16 fbc;
 741 };
 742
 743 struct g4x_sr_wm {
 744         u16 plane;
 745         u16 cursor;
 746         u16 fbc;
 747 };
 748
 749 struct vlv_wm_ddl_values {
 750         u8 plane[I915_MAX_PLANES];
 751 };
 752
 753 struct vlv_wm_values {
 754         struct g4x_pipe_wm pipe[3];
 755         struct g4x_sr_wm sr;
 756         struct vlv_wm_ddl_values ddl[3];
 757         u8 level;
 758         bool cxsr;
 759 };
 760
 761 struct g4x_wm_values {
 762         struct g4x_pipe_wm pipe[2];
 763         struct g4x_sr_wm sr;
 764         struct g4x_sr_wm hpll;
 765         bool cxsr;
 766         bool hpll_en;
 767         bool fbc_en;
 768 };
 769
 770 struct skl_ddb_entry {
 771         u16 start, end; /* in number of blocks, 'end' is exclusive */
 772 };
 773
 774 static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
 775 {
 776         return entry->end - entry->start;
 777 }
 778
 779 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
 780                                        const struct skl_ddb_entry *e2)
 781 {
 782         if (e1->start == e2->start && e1->end == e2->end)
 783                 return true;
 784
 785         return false;
 786 }
 787
 788 struct i915_frontbuffer_tracking {
 789         spinlock_t lock;
 790
 791         /*
 792          * Tracking bits for delayed frontbuffer flushing du to gpu activity or
 793          * scheduled flips.
 794          */
 795         unsigned busy_bits;
 796         unsigned flip_bits;
 797 };
 798
 799 struct i915_virtual_gpu {
 800         struct mutex lock; /* serialises sending of g2v_notify command pkts */
 801         bool active;
 802         u32 caps;
 803 };
 804
 805 struct intel_cdclk_config {
 806         unsigned int cdclk, vco, ref, bypass;
 807         u8 voltage_level;
 808 };
 809
 810 struct i915_selftest_stash {
 811         atomic_t counter;
 812 };
 813
 814 struct drm_i915_private {
 815         struct drm_device drm;
 816
 817         /* FIXME: Device release actions should all be moved to drmm_ */
 818         bool do_release;
 819
 820         /* i915 device parameters */
 821         struct i915_params params;
 822
 823         const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
 824         struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
 825         struct intel_driver_caps caps;
 826
 827         /**
 828          * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
 829          * end of stolen which we can optionally use to create GEM objects
 830          * backed by stolen memory. Note that stolen_usable_size tells us
 831          * exactly how much of this we are actually allowed to use, given that
 832          * some portion of it is in fact reserved for use by hardware functions.
 833          */
 834         struct resource dsm;
 835         /**
 836          * Reseved portion of Data Stolen Memory
 837          */
 838         struct resource dsm_reserved;
 839
 840         /*
 841          * Stolen memory is segmented in hardware with different portions
 842          * offlimits to certain functions.
 843          *
 844          * The drm_mm is initialised to the total accessible range, as found
 845          * from the PCI config. On Broadwell+, this is further restricted to
 846          * avoid the first page! The upper end of stolen memory is reserved for
 847          * hardware functions and similarly removed from the accessible range.
 848          */
 849         resource_size_t stolen_usable_size;     /* Total size minus reserved ranges */
 850
 851         struct intel_uncore uncore;
 852         struct intel_uncore_mmio_debug mmio_debug;
 853
 854         struct i915_virtual_gpu vgpu;
 855
 856         struct intel_gvt *gvt;
 857
 858         struct intel_wopcm wopcm;
 859
 860         struct intel_csr csr;
 861
 862         struct intel_gmbus gmbus[GMBUS_NUM_PINS];
 863
 864         /** gmbus_mutex protects against concurrent usage of the single hw gmbus
 865          * controller on different i2c buses. */
 866         struct mutex gmbus_mutex;
 867
 868         /**
 869          * Base address of where the gmbus and gpio blocks are located (either
 870          * on PCH or on SoC for platforms without PCH).
 871          */
 872         u32 gpio_mmio_base;
 873
 874         u32 hsw_psr_mmio_adjust;
 875
 876         /* MMIO base address for MIPI regs */
 877         u32 mipi_mmio_base;
 878
 879         u32 pps_mmio_base;
 880
 881         wait_queue_head_t gmbus_wait_queue;
 882
 883         struct pci_dev *bridge_dev;
 884
 885         struct rb_root uabi_engines;
 886
 887         struct resource mch_res;
 888
 889         /* protects the irq masks */
 890         spinlock_t irq_lock;
 891
 892         bool display_irqs_enabled;
 893
 894         /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
 895         struct pm_qos_request pm_qos;
 896
 897         /* Sideband mailbox protection */
 898         struct mutex sb_lock;
 899         struct pm_qos_request sb_qos;
 900
 901         /** Cached value of IMR to avoid reads in updating the bitfield */
 902         union {
 903                 u32 irq_mask;
 904                 u32 de_irq_mask[I915_MAX_PIPES];
 905         };
 906         u32 pipestat_irq_mask[I915_MAX_PIPES];
 907
 908         struct i915_hotplug hotplug;
 909         struct intel_fbc fbc;
 910         struct i915_drrs drrs;
 911         struct intel_opregion opregion;
 912         struct intel_vbt_data vbt;
 913
 914         bool preserve_bios_swizzle;
 915
 916         /* overlay */
 917         struct intel_overlay *overlay;
 918
 919         /* backlight registers and fields in struct intel_panel */
 920         struct mutex backlight_lock;
 921
 922         /* protects panel power sequencer state */
 923         struct mutex pps_mutex;
 924
 925         unsigned int fsb_freq, mem_freq, is_ddr3;
 926         unsigned int skl_preferred_vco_freq;
 927         unsigned int max_cdclk_freq;
 928
 929         unsigned int max_dotclk_freq;
 930         unsigned int hpll_freq;
 931         unsigned int fdi_pll_freq;
 932         unsigned int czclk_freq;
 933
 934         struct {
 935                 /* The current hardware cdclk configuration */
 936                 struct intel_cdclk_config hw;
 937
 938                 /* cdclk, divider, and ratio table from bspec */
 939                 const struct intel_cdclk_vals *table;
 940
 941                 struct intel_global_obj obj;
 942         } cdclk;
 943
 944         struct {
 945                 /* The current hardware dbuf configuration */
 946                 u8 enabled_slices;
 947
 948                 struct intel_global_obj obj;
 949         } dbuf;
 950
 951         /**
 952          * wq - Driver workqueue for GEM.
 953          *
 954          * NOTE: Work items scheduled here are not allowed to grab any modeset
 955          * locks, for otherwise the flushing done in the pageflip code will
 956          * result in deadlocks.
 957          */
 958         struct workqueue_struct *wq;
 959
 960         /* ordered wq for modesets */
 961         struct workqueue_struct *modeset_wq;
 962         /* unbound hipri wq for page flips/plane updates */
 963         struct workqueue_struct *flip_wq;
 964
 965         /* Display functions */
 966         struct drm_i915_display_funcs display;
 967
 968         /* PCH chipset type */
 969         enum intel_pch pch_type;
 970         unsigned short pch_id;
 971
 972         unsigned long quirks;
 973
 974         struct drm_atomic_state *modeset_restore_state;
 975         struct drm_modeset_acquire_ctx reset_ctx;
 976
 977         struct i915_ggtt ggtt; /* VM representing the global address space */
 978
 979         struct i915_gem_mm mm;
 980         DECLARE_HASHTABLE(mm_structs, 7);
 981         spinlock_t mm_lock;
 982
 983         /* Kernel Modesetting */
 984
 985         struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
 986         struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
 987
 988         /**
 989          * dpll and cdclk state is protected by connection_mutex
 990          * dpll.lock serializes intel_{prepare,enable,disable}_shared_dpll.
 991          * Must be global rather than per dpll, because on some platforms plls
 992          * share registers.
 993          */
 994         struct {
 995                 struct mutex lock;
 996
 997                 int num_shared_dpll;
 998                 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
 999                 const struct intel_dpll_mgr *mgr;
1000
1001                 struct {
1002                         int nssc;
1003                         int ssc;
1004                 } ref_clks;
1005         } dpll;
1006
1007         struct list_head global_obj_list;
1008
1009         /*
1010          * For reading active_pipes holding any crtc lock is
1011          * sufficient, for writing must hold all of them.
1012          */
1013         u8 active_pipes;
1014
1015         struct i915_wa_list gt_wa_list;
1016
1017         struct i915_frontbuffer_tracking fb_tracking;
1018
1019         struct intel_atomic_helper {
1020                 struct llist_head free_list;
1021                 struct work_struct free_work;
1022         } atomic_helper;
1023
1024         bool mchbar_need_disable;
1025
1026         struct intel_l3_parity l3_parity;
1027
1028         /*
1029          * HTI (aka HDPORT) state read during initial hw readout.  Most
1030          * platforms don't have HTI, so this will just stay 0.  Those that do
1031          * will use this later to figure out which PLLs and PHYs are unavailable
1032          * for driver usage.
1033          */
1034         u32 hti_state;
1035
1036         /*
1037          * edram size in MB.
1038          * Cannot be determined by PCIID. You must always read a register.
1039          */
1040         u32 edram_size_mb;
1041
1042         struct i915_power_domains power_domains;
1043
1044         struct i915_psr psr;
1045
1046         struct i915_gpu_error gpu_error;
1047
1048         struct drm_i915_gem_object *vlv_pctx;
1049
1050         /* list of fbdev register on this device */
1051         struct intel_fbdev *fbdev;
1052         struct work_struct fbdev_suspend_work;
1053
1054         struct drm_property *broadcast_rgb_property;
1055         struct drm_property *force_audio_property;
1056
1057         /* hda/i915 audio component */
1058         struct i915_audio_component *audio_component;
1059         bool audio_component_registered;
1060         /**
1061          * av_mutex - mutex for audio/video sync
1062          *
1063          */
1064         struct mutex av_mutex;
1065         int audio_power_refcount;
1066         u32 audio_freq_cntrl;
1067
1068         u32 fdi_rx_config;
1069
1070         /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
1071         u32 chv_phy_control;
1072         /*
1073          * Shadows for CHV DPLL_MD regs to keep the state
1074          * checker somewhat working in the presence hardware
1075          * crappiness (can't read out DPLL_MD for pipes B & C).
1076          */
1077         u32 chv_dpll_md[I915_MAX_PIPES];
1078         u32 bxt_phy_grc;
1079
1080         u32 suspend_count;
1081         bool power_domains_suspended;
1082         struct i915_suspend_saved_registers regfile;
1083         struct vlv_s0ix_state *vlv_s0ix_state;
1084
1085         enum {
1086                 I915_SAGV_UNKNOWN = 0,
1087                 I915_SAGV_DISABLED,
1088                 I915_SAGV_ENABLED,
1089                 I915_SAGV_NOT_CONTROLLED
1090         } sagv_status;
1091
1092         u32 sagv_block_time_us;
1093
1094         struct {
1095                 /*
1096                  * Raw watermark latency values:
1097                  * in 0.1us units for WM0,
1098                  * in 0.5us units for WM1+.
1099                  */
1100                 /* primary */
1101                 u16 pri_latency[5];
1102                 /* sprite */
1103                 u16 spr_latency[5];
1104                 /* cursor */
1105                 u16 cur_latency[5];
1106                 /*
1107                  * Raw watermark memory latency values
1108                  * for SKL for all 8 levels
1109                  * in 1us units.
1110                  */
1111                 u16 skl_latency[8];
1112
1113                 /* current hardware state */
1114                 union {
1115                         struct ilk_wm_values hw;
1116                         struct vlv_wm_values vlv;
1117                         struct g4x_wm_values g4x;
1118                 };
1119
1120                 u8 max_level;
1121
1122                 /*
1123                  * Should be held around atomic WM register writing; also
1124                  * protects * intel_crtc->wm.active and
1125                  * crtc_state->wm.need_postvbl_update.
1126                  */
1127                 struct mutex wm_mutex;
1128
1129                 /*
1130                  * Set during HW readout of watermarks/DDB.  Some platforms
1131                  * need to know when we're still using BIOS-provided values
1132                  * (which we don't fully trust).
1133                  *
1134                  * FIXME get rid of this.
1135                  */
1136                 bool distrust_bios_wm;
1137         } wm;
1138
1139         struct dram_info {
1140                 bool valid;
1141                 bool is_16gb_dimm;
1142                 u8 num_channels;
1143                 u8 ranks;
1144                 u32 bandwidth_kbps;
1145                 bool symmetric_memory;
1146                 enum intel_dram_type {
1147                         INTEL_DRAM_UNKNOWN,
1148                         INTEL_DRAM_DDR3,
1149                         INTEL_DRAM_DDR4,
1150                         INTEL_DRAM_LPDDR3,
1151                         INTEL_DRAM_LPDDR4
1152                 } type;
1153         } dram_info;
1154
1155         struct intel_bw_info {
1156                 /* for each QGV point */
1157                 unsigned int deratedbw[I915_NUM_QGV_POINTS];
1158                 u8 num_qgv_points;
1159                 u8 num_planes;
1160         } max_bw[6];
1161
1162         struct intel_global_obj bw_obj;
1163
1164         struct intel_runtime_pm runtime_pm;
1165
1166         struct i915_perf perf;
1167
1168         /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
1169         struct intel_gt gt;
1170
1171         struct {
1172                 struct i915_gem_contexts {
1173                         spinlock_t lock; /* locks list */
1174                         struct list_head list;
1175
1176                         struct llist_head free_list;
1177                         struct work_struct free_work;
1178                 } contexts;
1179
1180                 /*
1181                  * We replace the local file with a global mappings as the
1182                  * backing storage for the mmap is on the device and not
1183                  * on the struct file, and we do not want to prolong the
1184                  * lifetime of the local fd. To minimise the number of
1185                  * anonymous inodes we create, we use a global singleton to
1186                  * share the global mapping.
1187                  */
1188                 struct file *mmap_singleton;
1189         } gem;
1190
1191         u8 pch_ssc_use;
1192
1193         /* For i915gm/i945gm vblank irq workaround */
1194         u8 vblank_enabled;
1195
1196         /* perform PHY state sanity checks? */
1197         bool chv_phy_assert[2];
1198
1199         bool ipc_enabled;
1200
1201         /* Used to save the pipe-to-encoder mapping for audio */
1202         struct intel_encoder *av_enc_map[I915_MAX_PIPES];
1203
1204         /* necessary resource sharing with HDMI LPE audio driver. */
1205         struct {
1206                 struct platform_device *platdev;
1207                 int     irq;
1208         } lpe_audio;
1209
1210         struct i915_pmu pmu;
1211
1212         struct i915_hdcp_comp_master *hdcp_master;
1213         bool hdcp_comp_added;
1214
1215         /* Mutex to protect the above hdcp component related values. */
1216         struct mutex hdcp_comp_mutex;
1217
1218         I915_SELFTEST_DECLARE(struct i915_selftest_stash selftest;)
1219
1220         /*
1221          * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
1222          * will be rejected. Instead look for a better place.
1223          */
1224 };
1225
1226 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
1227 {
1228         return container_of(dev, struct drm_i915_private, drm);
1229 }
1230
1231 static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
1232 {
1233         return dev_get_drvdata(kdev);
1234 }
1235
1236 static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
1237 {
1238         return pci_get_drvdata(pdev);
1239 }
1240
1241 /* Simple iterator over all initialised engines */
1242 #define for_each_engine(engine__, dev_priv__, id__) \
1243         for ((id__) = 0; \
1244              (id__) < I915_NUM_ENGINES; \
1245              (id__)++) \
1246                 for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
1247
1248 /* Iterator over subset of engines selected by mask */
1249 #define for_each_engine_masked(engine__, gt__, mask__, tmp__) \
1250         for ((tmp__) = (mask__) & (gt__)->info.engine_mask; \
1251              (tmp__) ? \
1252              ((engine__) = (gt__)->engine[__mask_next_bit(tmp__)]), 1 : \
1253              0;)
1254
1255 #define rb_to_uabi_engine(rb) \
1256         rb_entry_safe(rb, struct intel_engine_cs, uabi_node)
1257
1258 #define for_each_uabi_engine(engine__, i915__) \
1259         for ((engine__) = rb_to_uabi_engine(rb_first(&(i915__)->uabi_engines));\
1260              (engine__); \
1261              (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
1262
1263 #define for_each_uabi_class_engine(engine__, class__, i915__) \
1264         for ((engine__) = intel_engine_lookup_user((i915__), (class__), 0); \
1265              (engine__) && (engine__)->uabi_class == (class__); \
1266              (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
1267
1268 #define I915_GTT_OFFSET_NONE ((u32)-1)
1269
1270 /*
1271  * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
1272  * considered to be the frontbuffer for the given plane interface-wise. This
1273  * doesn't mean that the hw necessarily already scans it out, but that any
1274  * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
1275  *
1276  * We have one bit per pipe and per scanout plane type.
1277  */
1278 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
1279 #define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
1280         BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
1281         BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
1282         BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
1283 })
1284 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
1285         BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1286 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
1287         GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
1288                 INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1289
1290 #define INTEL_INFO(dev_priv)    (&(dev_priv)->__info)
1291 #define RUNTIME_INFO(dev_priv)  (&(dev_priv)->__runtime)
1292 #define DRIVER_CAPS(dev_priv)   (&(dev_priv)->caps)
1293
1294 #define INTEL_GEN(dev_priv)     (INTEL_INFO(dev_priv)->gen)
1295 #define INTEL_DEVID(dev_priv)   (RUNTIME_INFO(dev_priv)->device_id)
1296
1297 #define REVID_FOREVER           0xff
1298 #define INTEL_REVID(dev_priv)   ((dev_priv)->drm.pdev->revision)
1299
1300 #define INTEL_GEN_MASK(s, e) ( \
1301         BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
1302         BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
1303         GENMASK((e) - 1, (s) - 1))
1304
1305 /* Returns true if Gen is in inclusive range [Start, End] */
1306 #define IS_GEN_RANGE(dev_priv, s, e) \
1307         (!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
1308
1309 #define IS_GEN(dev_priv, n) \
1310         (BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
1311          INTEL_INFO(dev_priv)->gen == (n))
1312
1313 #define HAS_DSB(dev_priv)       (INTEL_INFO(dev_priv)->display.has_dsb)
1314
1315 /*
1316  * Return true if revision is in range [since,until] inclusive.
1317  *
1318  * Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
1319  */
1320 #define IS_REVID(p, since, until) \
1321         (INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
1322
1323 static __always_inline unsigned int
1324 __platform_mask_index(const struct intel_runtime_info *info,
1325                       enum intel_platform p)
1326 {
1327         const unsigned int pbits =
1328                 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1329
1330         /* Expand the platform_mask array if this fails. */
1331         BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
1332                      pbits * ARRAY_SIZE(info->platform_mask));
1333
1334         return p / pbits;
1335 }
1336
1337 static __always_inline unsigned int
1338 __platform_mask_bit(const struct intel_runtime_info *info,
1339                     enum intel_platform p)
1340 {
1341         const unsigned int pbits =
1342                 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1343
1344         return p % pbits + INTEL_SUBPLATFORM_BITS;
1345 }
1346
1347 static inline u32
1348 intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
1349 {
1350         const unsigned int pi = __platform_mask_index(info, p);
1351
1352         return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
1353 }
1354
1355 static __always_inline bool
1356 IS_PLATFORM(const struct drm_i915_private *i915, enum intel_platform p)
1357 {
1358         const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1359         const unsigned int pi = __platform_mask_index(info, p);
1360         const unsigned int pb = __platform_mask_bit(info, p);
1361
1362         BUILD_BUG_ON(!__builtin_constant_p(p));
1363
1364         return info->platform_mask[pi] & BIT(pb);
1365 }
1366
1367 static __always_inline bool
1368 IS_SUBPLATFORM(const struct drm_i915_private *i915,
1369                enum intel_platform p, unsigned int s)
1370 {
1371         const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1372         const unsigned int pi = __platform_mask_index(info, p);
1373         const unsigned int pb = __platform_mask_bit(info, p);
1374         const unsigned int msb = BITS_PER_TYPE(info->platform_mask[0]) - 1;
1375         const u32 mask = info->platform_mask[pi];
1376
1377         BUILD_BUG_ON(!__builtin_constant_p(p));
1378         BUILD_BUG_ON(!__builtin_constant_p(s));
1379         BUILD_BUG_ON((s) >= INTEL_SUBPLATFORM_BITS);
1380
1381         /* Shift and test on the MSB position so sign flag can be used. */
1382         return ((mask << (msb - pb)) & (mask << (msb - s))) & BIT(msb);
1383 }
1384
1385 #define IS_MOBILE(dev_priv)     (INTEL_INFO(dev_priv)->is_mobile)
1386 #define IS_DGFX(dev_priv)   (INTEL_INFO(dev_priv)->is_dgfx)
1387
1388 #define IS_I830(dev_priv)       IS_PLATFORM(dev_priv, INTEL_I830)
1389 #define IS_I845G(dev_priv)      IS_PLATFORM(dev_priv, INTEL_I845G)
1390 #define IS_I85X(dev_priv)       IS_PLATFORM(dev_priv, INTEL_I85X)
1391 #define IS_I865G(dev_priv)      IS_PLATFORM(dev_priv, INTEL_I865G)
1392 #define IS_I915G(dev_priv)      IS_PLATFORM(dev_priv, INTEL_I915G)
1393 #define IS_I915GM(dev_priv)     IS_PLATFORM(dev_priv, INTEL_I915GM)
1394 #define IS_I945G(dev_priv)      IS_PLATFORM(dev_priv, INTEL_I945G)
1395 #define IS_I945GM(dev_priv)     IS_PLATFORM(dev_priv, INTEL_I945GM)
1396 #define IS_I965G(dev_priv)      IS_PLATFORM(dev_priv, INTEL_I965G)
1397 #define IS_I965GM(dev_priv)     IS_PLATFORM(dev_priv, INTEL_I965GM)
1398 #define IS_G45(dev_priv)        IS_PLATFORM(dev_priv, INTEL_G45)
1399 #define IS_GM45(dev_priv)       IS_PLATFORM(dev_priv, INTEL_GM45)
1400 #define IS_G4X(dev_priv)        (IS_G45(dev_priv) || IS_GM45(dev_priv))
1401 #define IS_PINEVIEW(dev_priv)   IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
1402 #define IS_G33(dev_priv)        IS_PLATFORM(dev_priv, INTEL_G33)
1403 #define IS_IRONLAKE(dev_priv)   IS_PLATFORM(dev_priv, INTEL_IRONLAKE)
1404 #define IS_IRONLAKE_M(dev_priv) \
1405         (IS_PLATFORM(dev_priv, INTEL_IRONLAKE) && IS_MOBILE(dev_priv))
1406 #define IS_IVYBRIDGE(dev_priv)  IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
1407 #define IS_IVB_GT1(dev_priv)    (IS_IVYBRIDGE(dev_priv) && \
1408                                  INTEL_INFO(dev_priv)->gt == 1)
1409 #define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
1410 #define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
1411 #define IS_HASWELL(dev_priv)    IS_PLATFORM(dev_priv, INTEL_HASWELL)
1412 #define IS_BROADWELL(dev_priv)  IS_PLATFORM(dev_priv, INTEL_BROADWELL)
1413 #define IS_SKYLAKE(dev_priv)    IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
1414 #define IS_BROXTON(dev_priv)    IS_PLATFORM(dev_priv, INTEL_BROXTON)
1415 #define IS_KABYLAKE(dev_priv)   IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
1416 #define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
1417 #define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
1418 #define IS_COMETLAKE(dev_priv)  IS_PLATFORM(dev_priv, INTEL_COMETLAKE)
1419 #define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
1420 #define IS_ICELAKE(dev_priv)    IS_PLATFORM(dev_priv, INTEL_ICELAKE)
1421 #define IS_JSL_EHL(dev_priv)    (IS_PLATFORM(dev_priv, INTEL_JASPERLAKE) || \
1422                                 IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
1423 #define IS_TIGERLAKE(dev_priv)  IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
1424 #define IS_ROCKETLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ROCKETLAKE)
1425 #define IS_DG1(dev_priv)        IS_PLATFORM(dev_priv, INTEL_DG1)
1426 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
1427                                     (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
1428 #define IS_BDW_ULT(dev_priv) \
1429         IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULT)
1430 #define IS_BDW_ULX(dev_priv) \
1431         IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULX)
1432 #define IS_BDW_GT3(dev_priv)    (IS_BROADWELL(dev_priv) && \
1433                                  INTEL_INFO(dev_priv)->gt == 3)
1434 #define IS_HSW_ULT(dev_priv) \
1435         IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULT)
1436 #define IS_HSW_GT3(dev_priv)    (IS_HASWELL(dev_priv) && \
1437                                  INTEL_INFO(dev_priv)->gt == 3)
1438 #define IS_HSW_GT1(dev_priv)    (IS_HASWELL(dev_priv) && \
1439                                  INTEL_INFO(dev_priv)->gt == 1)
1440 /* ULX machines are also considered ULT. */
1441 #define IS_HSW_ULX(dev_priv) \
1442         IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULX)
1443 #define IS_SKL_ULT(dev_priv) \
1444         IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULT)
1445 #define IS_SKL_ULX(dev_priv) \
1446         IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULX)
1447 #define IS_KBL_ULT(dev_priv) \
1448         IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULT)
1449 #define IS_KBL_ULX(dev_priv) \
1450         IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULX)
1451 #define IS_SKL_GT2(dev_priv)    (IS_SKYLAKE(dev_priv) && \
1452                                  INTEL_INFO(dev_priv)->gt == 2)
1453 #define IS_SKL_GT3(dev_priv)    (IS_SKYLAKE(dev_priv) && \
1454                                  INTEL_INFO(dev_priv)->gt == 3)
1455 #define IS_SKL_GT4(dev_priv)    (IS_SKYLAKE(dev_priv) && \
1456                                  INTEL_INFO(dev_priv)->gt == 4)
1457 #define IS_KBL_GT2(dev_priv)    (IS_KABYLAKE(dev_priv) && \
1458                                  INTEL_INFO(dev_priv)->gt == 2)
1459 #define IS_KBL_GT3(dev_priv)    (IS_KABYLAKE(dev_priv) && \
1460                                  INTEL_INFO(dev_priv)->gt == 3)
1461 #define IS_CFL_ULT(dev_priv) \
1462         IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULT)
1463 #define IS_CFL_ULX(dev_priv) \
1464         IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULX)
1465 #define IS_CFL_GT2(dev_priv)    (IS_COFFEELAKE(dev_priv) && \
1466                                  INTEL_INFO(dev_priv)->gt == 2)
1467 #define IS_CFL_GT3(dev_priv)    (IS_COFFEELAKE(dev_priv) && \
1468                                  INTEL_INFO(dev_priv)->gt == 3)
1469
1470 #define IS_CML_ULT(dev_priv) \
1471         IS_SUBPLATFORM(dev_priv, INTEL_COMETLAKE, INTEL_SUBPLATFORM_ULT)
1472 #define IS_CML_ULX(dev_priv) \
1473         IS_SUBPLATFORM(dev_priv, INTEL_COMETLAKE, INTEL_SUBPLATFORM_ULX)
1474 #define IS_CML_GT2(dev_priv)    (IS_COMETLAKE(dev_priv) && \
1475                                  INTEL_INFO(dev_priv)->gt == 2)
1476
1477 #define IS_CNL_WITH_PORT_F(dev_priv) \
1478         IS_SUBPLATFORM(dev_priv, INTEL_CANNONLAKE, INTEL_SUBPLATFORM_PORTF)
1479 #define IS_ICL_WITH_PORT_F(dev_priv) \
1480         IS_SUBPLATFORM(dev_priv, INTEL_ICELAKE, INTEL_SUBPLATFORM_PORTF)
1481
1482 #define IS_TGL_U(dev_priv) \
1483         IS_SUBPLATFORM(dev_priv, INTEL_TIGERLAKE, INTEL_SUBPLATFORM_ULT)
1484
1485 #define IS_TGL_Y(dev_priv) \
1486         IS_SUBPLATFORM(dev_priv, INTEL_TIGERLAKE, INTEL_SUBPLATFORM_ULX)
1487
1488 #define SKL_REVID_A0            0x0
1489 #define SKL_REVID_B0            0x1
1490 #define SKL_REVID_C0            0x2
1491 #define SKL_REVID_D0            0x3
1492 #define SKL_REVID_E0            0x4
1493 #define SKL_REVID_F0            0x5
1494 #define SKL_REVID_G0            0x6
1495 #define SKL_REVID_H0            0x7
1496
1497 #define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
1498
1499 #define BXT_REVID_A0            0x0
1500 #define BXT_REVID_A1            0x1
1501 #define BXT_REVID_B0            0x3
1502 #define BXT_REVID_B_LAST        0x8
1503 #define BXT_REVID_C0            0x9
1504
1505 #define IS_BXT_REVID(dev_priv, since, until) \
1506         (IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
1507
1508 enum {
1509         KBL_REVID_A0,
1510         KBL_REVID_B0,
1511         KBL_REVID_B1,
1512         KBL_REVID_C0,
1513         KBL_REVID_D0,
1514         KBL_REVID_D1,
1515         KBL_REVID_E0,
1516         KBL_REVID_F0,
1517         KBL_REVID_G0,
1518 };
1519
1520 struct i915_rev_steppings {
1521         u8 gt_stepping;
1522         u8 disp_stepping;
1523 };
1524
1525 /* Defined in intel_workarounds.c */
1526 extern const struct i915_rev_steppings kbl_revids[];
1527
1528 #define IS_KBL_GT_REVID(dev_priv, since, until) \
1529         (IS_KABYLAKE(dev_priv) && \
1530          kbl_revids[INTEL_REVID(dev_priv)].gt_stepping >= since && \
1531          kbl_revids[INTEL_REVID(dev_priv)].gt_stepping <= until)
1532 #define IS_KBL_DISP_REVID(dev_priv, since, until) \
1533         (IS_KABYLAKE(dev_priv) && \
1534          kbl_revids[INTEL_REVID(dev_priv)].disp_stepping >= since && \
1535          kbl_revids[INTEL_REVID(dev_priv)].disp_stepping <= until)
1536
1537 #define GLK_REVID_A0            0x0
1538 #define GLK_REVID_A1            0x1
1539 #define GLK_REVID_A2            0x2
1540 #define GLK_REVID_B0            0x3
1541
1542 #define IS_GLK_REVID(dev_priv, since, until) \
1543         (IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
1544
1545 #define CNL_REVID_A0            0x0
1546 #define CNL_REVID_B0            0x1
1547 #define CNL_REVID_C0            0x2
1548
1549 #define IS_CNL_REVID(p, since, until) \
1550         (IS_CANNONLAKE(p) && IS_REVID(p, since, until))
1551
1552 #define ICL_REVID_A0            0x0
1553 #define ICL_REVID_A2            0x1
1554 #define ICL_REVID_B0            0x3
1555 #define ICL_REVID_B2            0x4
1556 #define ICL_REVID_C0            0x5
1557
1558 #define IS_ICL_REVID(p, since, until) \
1559         (IS_ICELAKE(p) && IS_REVID(p, since, until))
1560
1561 #define EHL_REVID_A0            0x0
1562 #define EHL_REVID_B0            0x1
1563
1564 #define IS_JSL_EHL_REVID(p, since, until) \
1565         (IS_JSL_EHL(p) && IS_REVID(p, since, until))
1566
1567 enum {
1568         TGL_REVID_A0,
1569         TGL_REVID_B0,
1570         TGL_REVID_B1,
1571         TGL_REVID_C0,
1572         TGL_REVID_D0,
1573 };
1574
1575 extern const struct i915_rev_steppings tgl_uy_revids[];
1576 extern const struct i915_rev_steppings tgl_revids[];
1577
1578 static inline const struct i915_rev_steppings *
1579 tgl_revids_get(struct drm_i915_private *dev_priv)
1580 {
1581         if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv))
1582                 return &tgl_uy_revids[INTEL_REVID(dev_priv)];
1583         else
1584                 return &tgl_revids[INTEL_REVID(dev_priv)];
1585 }
1586
1587 #define IS_TGL_DISP_REVID(p, since, until) \
1588         (IS_TIGERLAKE(p) && \
1589          tgl_revids_get(p)->disp_stepping >= (since) && \
1590          tgl_revids_get(p)->disp_stepping <= (until))
1591
1592 #define IS_TGL_UY_GT_REVID(p, since, until) \
1593         ((IS_TGL_U(p) || IS_TGL_Y(p)) && \
1594          tgl_uy_revids[INTEL_REVID(p)].gt_stepping >= (since) && \
1595          tgl_uy_revids[INTEL_REVID(p)].gt_stepping <= (until))
1596
1597 #define IS_TGL_GT_REVID(p, since, until) \
1598         (IS_TIGERLAKE(p) && \
1599          !(IS_TGL_U(p) || IS_TGL_Y(p)) && \
1600          tgl_revids[INTEL_REVID(p)].gt_stepping >= (since) && \
1601          tgl_revids[INTEL_REVID(p)].gt_stepping <= (until))
1602
1603 #define RKL_REVID_A0            0x0
1604 #define RKL_REVID_B0            0x1
1605 #define RKL_REVID_C0            0x4
1606
1607 #define IS_RKL_REVID(p, since, until) \
1608         (IS_ROCKETLAKE(p) && IS_REVID(p, since, until))
1609
1610 #define DG1_REVID_A0            0x0
1611 #define DG1_REVID_B0            0x1
1612
1613 #define IS_DG1_REVID(p, since, until) \
1614         (IS_DG1(p) && IS_REVID(p, since, until))
1615
1616 #define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
1617 #define IS_GEN9_LP(dev_priv)    (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
1618 #define IS_GEN9_BC(dev_priv)    (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
1619
1620 #define __HAS_ENGINE(engine_mask, id) ((engine_mask) & BIT(id))
1621 #define HAS_ENGINE(gt, id) __HAS_ENGINE((gt)->info.engine_mask, id)
1622
1623 #define ENGINE_INSTANCES_MASK(gt, first, count) ({              \
1624         unsigned int first__ = (first);                                 \
1625         unsigned int count__ = (count);                                 \
1626         ((gt)->info.engine_mask &                                               \
1627          GENMASK(first__ + count__ - 1, first__)) >> first__;           \
1628 })
1629 #define VDBOX_MASK(gt) \
1630         ENGINE_INSTANCES_MASK(gt, VCS0, I915_MAX_VCS)
1631 #define VEBOX_MASK(gt) \
1632         ENGINE_INSTANCES_MASK(gt, VECS0, I915_MAX_VECS)
1633
1634 /*
1635  * The Gen7 cmdparser copies the scanned buffer to the ggtt for execution
1636  * All later gens can run the final buffer from the ppgtt
1637  */
1638 #define CMDPARSER_USES_GGTT(dev_priv) IS_GEN(dev_priv, 7)
1639
1640 #define HAS_LLC(dev_priv)       (INTEL_INFO(dev_priv)->has_llc)
1641 #define HAS_SNOOP(dev_priv)     (INTEL_INFO(dev_priv)->has_snoop)
1642 #define HAS_EDRAM(dev_priv)     ((dev_priv)->edram_size_mb)
1643 #define HAS_SECURE_BATCHES(dev_priv) (INTEL_GEN(dev_priv) < 6)
1644 #define HAS_WT(dev_priv)        HAS_EDRAM(dev_priv)
1645
1646 #define HWS_NEEDS_PHYSICAL(dev_priv)    (INTEL_INFO(dev_priv)->hws_needs_physical)
1647
1648 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
1649                 (INTEL_INFO(dev_priv)->has_logical_ring_contexts)
1650 #define HAS_LOGICAL_RING_ELSQ(dev_priv) \
1651                 (INTEL_INFO(dev_priv)->has_logical_ring_elsq)
1652 #define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
1653                 (INTEL_INFO(dev_priv)->has_logical_ring_preemption)
1654
1655 #define HAS_MASTER_UNIT_IRQ(dev_priv) (INTEL_INFO(dev_priv)->has_master_unit_irq)
1656
1657 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
1658
1659 #define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_type)
1660 #define HAS_PPGTT(dev_priv) \
1661         (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
1662 #define HAS_FULL_PPGTT(dev_priv) \
1663         (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
1664
1665 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
1666         GEM_BUG_ON((sizes) == 0); \
1667         ((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
1668 })
1669
1670 #define HAS_OVERLAY(dev_priv)            (INTEL_INFO(dev_priv)->display.has_overlay)
1671 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
1672                 (INTEL_INFO(dev_priv)->display.overlay_needs_physical)
1673
1674 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
1675 #define HAS_BROKEN_CS_TLB(dev_priv)     (IS_I830(dev_priv) || IS_I845G(dev_priv))
1676
1677 #define NEEDS_RC6_CTX_CORRUPTION_WA(dev_priv)   \
1678         (IS_BROADWELL(dev_priv) || IS_GEN(dev_priv, 9))
1679
1680 /* WaRsDisableCoarsePowerGating:skl,cnl */
1681 #define NEEDS_WaRsDisableCoarsePowerGating(dev_priv)                    \
1682         (IS_CANNONLAKE(dev_priv) ||                                     \
1683          IS_SKL_GT3(dev_priv) ||                                        \
1684          IS_SKL_GT4(dev_priv))
1685
1686 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
1687 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
1688                                         IS_GEMINILAKE(dev_priv) || \
1689                                         IS_KABYLAKE(dev_priv))
1690
1691 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
1692  * rows, which changed the alignment requirements and fence programming.
1693  */
1694 #define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
1695                                          !(IS_I915G(dev_priv) || \
1696                                          IS_I915GM(dev_priv)))
1697 #define SUPPORTS_TV(dev_priv)           (INTEL_INFO(dev_priv)->display.supports_tv)
1698 #define I915_HAS_HOTPLUG(dev_priv)      (INTEL_INFO(dev_priv)->display.has_hotplug)
1699
1700 #define HAS_FW_BLC(dev_priv)    (INTEL_GEN(dev_priv) > 2)
1701 #define HAS_FBC(dev_priv)       (INTEL_INFO(dev_priv)->display.has_fbc)
1702 #define HAS_CUR_FBC(dev_priv)   (!HAS_GMCH(dev_priv) && INTEL_GEN(dev_priv) >= 7)
1703
1704 #define HAS_IPS(dev_priv)       (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
1705
1706 #define HAS_DP_MST(dev_priv)    (INTEL_INFO(dev_priv)->display.has_dp_mst)
1707
1708 #define HAS_DDI(dev_priv)                (INTEL_INFO(dev_priv)->display.has_ddi)
1709 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
1710 #define HAS_PSR(dev_priv)                (INTEL_INFO(dev_priv)->display.has_psr)
1711 #define HAS_PSR_HW_TRACKING(dev_priv) \
1712         (INTEL_INFO(dev_priv)->display.has_psr_hw_tracking)
1713 #define HAS_PSR2_SEL_FETCH(dev_priv)     (INTEL_GEN(dev_priv) >= 12)
1714 #define HAS_TRANSCODER(dev_priv, trans)  ((INTEL_INFO(dev_priv)->cpu_transcoder_mask & BIT(trans)) != 0)
1715
1716 #define HAS_RC6(dev_priv)                (INTEL_INFO(dev_priv)->has_rc6)
1717 #define HAS_RC6p(dev_priv)               (INTEL_INFO(dev_priv)->has_rc6p)
1718 #define HAS_RC6pp(dev_priv)              (false) /* HW was never validated */
1719
1720 #define HAS_RPS(dev_priv)       (INTEL_INFO(dev_priv)->has_rps)
1721
1722 #define HAS_CSR(dev_priv)       (INTEL_INFO(dev_priv)->display.has_csr)
1723
1724 #define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
1725 #define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
1726
1727 #define HAS_IPC(dev_priv)                (INTEL_INFO(dev_priv)->display.has_ipc)
1728
1729 #define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
1730 #define HAS_LMEM(i915) HAS_REGION(i915, REGION_LMEM)
1731
1732 #define HAS_GT_UC(dev_priv)     (INTEL_INFO(dev_priv)->has_gt_uc)
1733
1734 #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
1735
1736 #define HAS_GLOBAL_MOCS_REGISTERS(dev_priv)     (INTEL_INFO(dev_priv)->has_global_mocs)
1737
1738
1739 #define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
1740
1741 #define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
1742
1743 /* DPF == dynamic parity feature */
1744 #define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
1745 #define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
1746                                  2 : HAS_L3_DPF(dev_priv))
1747
1748 #define GT_FREQUENCY_MULTIPLIER 50
1749 #define GEN9_FREQ_SCALER 3
1750
1751 #define INTEL_NUM_PIPES(dev_priv) (hweight8(INTEL_INFO(dev_priv)->pipe_mask))
1752
1753 #define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->pipe_mask != 0)
1754
1755 /* Only valid when HAS_DISPLAY() is true */
1756 #define INTEL_DISPLAY_ENABLED(dev_priv) \
1757         (drm_WARN_ON(&(dev_priv)->drm, !HAS_DISPLAY(dev_priv)), !(dev_priv)->params.disable_display)
1758
1759 static inline bool intel_vtd_active(void)
1760 {
1761 #ifdef CONFIG_INTEL_IOMMU
1762         if (intel_iommu_gfx_mapped)
1763                 return true;
1764 #endif
1765
1766         /* Running as a guest, we assume the host is enforcing VT'd */
1767         return !hypervisor_is_type(X86_HYPER_NATIVE);
1768 }
1769
1770 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
1771 {
1772         return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
1773 }
1774
1775 static inline bool
1776 intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
1777 {
1778         return IS_BROXTON(dev_priv) && intel_vtd_active();
1779 }
1780
1781 /* i915_drv.c */
1782 extern const struct dev_pm_ops i915_pm_ops;
1783
1784 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
1785 void i915_driver_remove(struct drm_i915_private *i915);
1786 void i915_driver_shutdown(struct drm_i915_private *i915);
1787
1788 int i915_resume_switcheroo(struct drm_i915_private *i915);
1789 int i915_suspend_switcheroo(struct drm_i915_private *i915, pm_message_t state);
1790
1791 int i915_getparam_ioctl(struct drm_device *dev, void *data,
1792                         struct drm_file *file_priv);
1793
1794 /* i915_gem.c */
1795 int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
1796 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
1797 void i915_gem_init_early(struct drm_i915_private *dev_priv);
1798 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
1799 int i915_gem_freeze(struct drm_i915_private *dev_priv);
1800 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
1801
1802 struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915);
1803
1804 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
1805 {
1806         /*
1807          * A single pass should suffice to release all the freed objects (along
1808          * most call paths) , but be a little more paranoid in that freeing
1809          * the objects does take a little amount of time, during which the rcu
1810          * callbacks could have added new objects into the freed list, and
1811          * armed the work again.
1812          */
1813         while (atomic_read(&i915->mm.free_count)) {
1814                 flush_work(&i915->mm.free_work);
1815                 rcu_barrier();
1816         }
1817 }
1818
1819 static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
1820 {
1821         /*
1822          * Similar to objects above (see i915_gem_drain_freed-objects), in
1823          * general we have workers that are armed by RCU and then rearm
1824          * themselves in their callbacks. To be paranoid, we need to
1825          * drain the workqueue a second time after waiting for the RCU
1826          * grace period so that we catch work queued via RCU from the first
1827          * pass. As neither drain_workqueue() nor flush_workqueue() report
1828          * a result, we make an assumption that we only don't require more
1829          * than 3 passes to catch all _recursive_ RCU delayed work.
1830          *
1831          */
1832         int pass = 3;
1833         do {
1834                 flush_workqueue(i915->wq);
1835                 rcu_barrier();
1836                 i915_gem_drain_freed_objects(i915);
1837         } while (--pass);
1838         drain_workqueue(i915->wq);
1839 }
1840
1841 struct i915_vma * __must_check
1842 i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
1843                             struct i915_gem_ww_ctx *ww,
1844                             const struct i915_ggtt_view *view,
1845                             u64 size, u64 alignment, u64 flags);
1846
1847 static inline struct i915_vma * __must_check
1848 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
1849                          const struct i915_ggtt_view *view,
1850                          u64 size, u64 alignment, u64 flags)
1851 {
1852         return i915_gem_object_ggtt_pin_ww(obj, NULL, view, size, alignment, flags);
1853 }
1854
1855 int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
1856                            unsigned long flags);
1857 #define I915_GEM_OBJECT_UNBIND_ACTIVE BIT(0)
1858 #define I915_GEM_OBJECT_UNBIND_BARRIER BIT(1)
1859 #define I915_GEM_OBJECT_UNBIND_TEST BIT(2)
1860
1861 void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
1862
1863 int i915_gem_dumb_create(struct drm_file *file_priv,
1864                          struct drm_device *dev,
1865                          struct drm_mode_create_dumb *args);
1866
1867 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
1868
1869 static inline u32 i915_reset_count(struct i915_gpu_error *error)
1870 {
1871         return atomic_read(&error->reset_count);
1872 }
1873
1874 static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
1875                                           const struct intel_engine_cs *engine)
1876 {
1877         return atomic_read(&error->reset_engine_count[engine->uabi_class]);
1878 }
1879
1880 int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
1881 void i915_gem_driver_register(struct drm_i915_private *i915);
1882 void i915_gem_driver_unregister(struct drm_i915_private *i915);
1883 void i915_gem_driver_remove(struct drm_i915_private *dev_priv);
1884 void i915_gem_driver_release(struct drm_i915_private *dev_priv);
1885 void i915_gem_suspend(struct drm_i915_private *dev_priv);
1886 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
1887 void i915_gem_resume(struct drm_i915_private *dev_priv);
1888
1889 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
1890
1891 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
1892                                     enum i915_cache_level cache_level);
1893
1894 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
1895                                 struct dma_buf *dma_buf);
1896
1897 struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags);
1898
1899 static inline struct i915_gem_context *
1900 __i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
1901 {
1902         return xa_load(&file_priv->context_xa, id);
1903 }
1904
1905 static inline struct i915_gem_context *
1906 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
1907 {
1908         struct i915_gem_context *ctx;
1909
1910         rcu_read_lock();
1911         ctx = __i915_gem_context_lookup_rcu(file_priv, id);
1912         if (ctx && !kref_get_unless_zero(&ctx->ref))
1913                 ctx = NULL;
1914         rcu_read_unlock();
1915
1916         return ctx;
1917 }
1918
1919 /* i915_gem_evict.c */
1920 int __must_check i915_gem_evict_something(struct i915_address_space *vm,
1921                                           u64 min_size, u64 alignment,
1922                                           unsigned long color,
1923                                           u64 start, u64 end,
1924                                           unsigned flags);
1925 int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
1926                                          struct drm_mm_node *node,
1927                                          unsigned int flags);
1928 int i915_gem_evict_vm(struct i915_address_space *vm);
1929
1930 /* i915_gem_internal.c */
1931 struct drm_i915_gem_object *
1932 i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
1933                                 phys_addr_t size);
1934
1935 /* i915_gem_tiling.c */
1936 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
1937 {
1938         struct drm_i915_private *i915 = to_i915(obj->base.dev);
1939
1940         return i915->ggtt.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
1941                 i915_gem_object_is_tiled(obj);
1942 }
1943
1944 u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
1945                         unsigned int tiling, unsigned int stride);
1946 u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
1947                              unsigned int tiling, unsigned int stride);
1948
1949 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
1950
1951 /* i915_cmd_parser.c */
1952 int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
1953 void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
1954 void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
1955 int intel_engine_cmd_parser(struct intel_engine_cs *engine,
1956                             struct i915_vma *batch,
1957                             unsigned long batch_offset,
1958                             unsigned long batch_length,
1959                             struct i915_vma *shadow,
1960                             bool trampoline);
1961 #define I915_CMD_PARSER_TRAMPOLINE_SIZE 8
1962
1963 /* intel_device_info.c */
1964 static inline struct intel_device_info *
1965 mkwrite_device_info(struct drm_i915_private *dev_priv)
1966 {
1967         return (struct intel_device_info *)INTEL_INFO(dev_priv);
1968 }
1969
1970 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
1971                         struct drm_file *file);
1972
1973 #define __I915_REG_OP(op__, dev_priv__, ...) \
1974         intel_uncore_##op__(&(dev_priv__)->uncore, __VA_ARGS__)
1975
1976 #define I915_READ(reg__)         __I915_REG_OP(read, dev_priv, (reg__))
1977 #define I915_WRITE(reg__, val__) __I915_REG_OP(write, dev_priv, (reg__), (val__))
1978
1979 #define POSTING_READ(reg__)     __I915_REG_OP(posting_read, dev_priv, (reg__))
1980
1981 /* These are untraced mmio-accessors that are only valid to be used inside
1982  * critical sections, such as inside IRQ handlers, where forcewake is explicitly
1983  * controlled.
1984  *
1985  * Think twice, and think again, before using these.
1986  *
1987  * As an example, these accessors can possibly be used between:
1988  *
1989  * spin_lock_irq(&dev_priv->uncore.lock);
1990  * intel_uncore_forcewake_get__locked();
1991  *
1992  * and
1993  *
1994  * intel_uncore_forcewake_put__locked();
1995  * spin_unlock_irq(&dev_priv->uncore.lock);
1996  *
1997  *
1998  * Note: some registers may not need forcewake held, so
1999  * intel_uncore_forcewake_{get,put} can be omitted, see
2000  * intel_uncore_forcewake_for_reg().
2001  *
2002  * Certain architectures will die if the same cacheline is concurrently accessed
2003  * by different clients (e.g. on Ivybridge). Access to registers should
2004  * therefore generally be serialised, by either the dev_priv->uncore.lock or
2005  * a more localised lock guarding all access to that bank of registers.
2006  */
2007 #define I915_READ_FW(reg__) __I915_REG_OP(read_fw, dev_priv, (reg__))
2008 #define I915_WRITE_FW(reg__, val__) __I915_REG_OP(write_fw, dev_priv, (reg__), (val__))
2009
2010 /* i915_mm.c */
2011 int remap_io_mapping(struct vm_area_struct *vma,
2012                      unsigned long addr, unsigned long pfn, unsigned long size,
2013                      struct io_mapping *iomap);
2014 int remap_io_sg(struct vm_area_struct *vma,
2015                 unsigned long addr, unsigned long size,
2016                 struct scatterlist *sgl, resource_size_t iobase);
2017
2018 static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
2019 {
2020         if (INTEL_GEN(i915) >= 10)
2021                 return CNL_HWS_CSB_WRITE_INDEX;
2022         else
2023                 return I915_HWS_CSB_WRITE_INDEX;
2024 }
2025
2026 static inline enum i915_map_type
2027 i915_coherent_map_type(struct drm_i915_private *i915)
2028 {
2029         return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
2030 }
2031
2032 static inline u64 i915_cs_timestamp_ns_to_ticks(struct drm_i915_private *i915, u64 val)
2033 {
2034         return DIV_ROUND_UP_ULL(val * RUNTIME_INFO(i915)->cs_timestamp_frequency_hz,
2035                                 1000000000);
2036 }
2037
2038 static inline u64 i915_cs_timestamp_ticks_to_ns(struct drm_i915_private *i915, u64 val)
2039 {
2040         return div_u64(val * 1000000000,
2041                        RUNTIME_INFO(i915)->cs_timestamp_frequency_hz);
2042 }
2043
2044 #endif