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 "i915_reg.h"
  34 #include "intel_bios.h"
  35 #include "intel_ringbuffer.h"
  36 #include <linux/io-mapping.h>
  37 #include <linux/i2c.h>
  38 #include <linux/i2c-algo-bit.h>
  39 #include <drm/intel-gtt.h>
  40 #include <linux/backlight.h>
  41 #include <linux/intel-iommu.h>
  42 #include <linux/kref.h>
  43
  44 /* General customization:
  45  */
  46
  47 #define DRIVER_AUTHOR           "Tungsten Graphics, Inc."
  48
  49 #define DRIVER_NAME             "i915"
  50 #define DRIVER_DESC             "Intel Graphics"
  51 #define DRIVER_DATE             "20080730"
  52
  53 enum pipe {
  54         PIPE_A = 0,
  55         PIPE_B,
  56         PIPE_C,
  57         I915_MAX_PIPES
  58 };
  59 #define pipe_name(p) ((p) + 'A')
  60
  61 enum plane {
  62         PLANE_A = 0,
  63         PLANE_B,
  64         PLANE_C,
  65 };
  66 #define plane_name(p) ((p) + 'A')
  67
  68 enum port {
  69         PORT_A = 0,
  70         PORT_B,
  71         PORT_C,
  72         PORT_D,
  73         PORT_E,
  74         I915_MAX_PORTS
  75 };
  76 #define port_name(p) ((p) + 'A')
  77
  78 #define I915_GEM_GPU_DOMAINS    (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
  79
  80 #define for_each_pipe(p) for ((p) = 0; (p) < dev_priv->num_pipe; (p)++)
  81
  82 #define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
  83         list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
  84                 if ((intel_encoder)->base.crtc == (__crtc))
  85
  86 struct intel_pch_pll {
  87         int refcount; /* count of number of CRTCs sharing this PLL */
  88         int active; /* count of number of active CRTCs (i.e. DPMS on) */
  89         bool on; /* is the PLL actually active? Disabled during modeset */
  90         int pll_reg;
  91         int fp0_reg;
  92         int fp1_reg;
  93 };
  94 #define I915_NUM_PLLS 2
  95
  96 struct intel_ddi_plls {
  97         int spll_refcount;
  98         int wrpll1_refcount;
  99         int wrpll2_refcount;
 100 };
 101
 102 /* Interface history:
 103  *
 104  * 1.1: Original.
 105  * 1.2: Add Power Management
 106  * 1.3: Add vblank support
 107  * 1.4: Fix cmdbuffer path, add heap destroy
 108  * 1.5: Add vblank pipe configuration
 109  * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
 110  *      - Support vertical blank on secondary display pipe
 111  */
 112 #define DRIVER_MAJOR            1
 113 #define DRIVER_MINOR            6
 114 #define DRIVER_PATCHLEVEL       0
 115
 116 #define WATCH_COHERENCY 0
 117 #define WATCH_LISTS     0
 118 #define WATCH_GTT       0
 119
 120 #define I915_GEM_PHYS_CURSOR_0 1
 121 #define I915_GEM_PHYS_CURSOR_1 2
 122 #define I915_GEM_PHYS_OVERLAY_REGS 3
 123 #define I915_MAX_PHYS_OBJECT (I915_GEM_PHYS_OVERLAY_REGS)
 124
 125 struct drm_i915_gem_phys_object {
 126         int id;
 127         struct page **page_list;
 128         drm_dma_handle_t *handle;
 129         struct drm_i915_gem_object *cur_obj;
 130 };
 131
 132 struct mem_block {
 133         struct mem_block *next;
 134         struct mem_block *prev;
 135         int start;
 136         int size;
 137         struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */
 138 };
 139
 140 struct opregion_header;
 141 struct opregion_acpi;
 142 struct opregion_swsci;
 143 struct opregion_asle;
 144 struct drm_i915_private;
 145
 146 struct intel_opregion {
 147         struct opregion_header __iomem *header;
 148         struct opregion_acpi __iomem *acpi;
 149         struct opregion_swsci __iomem *swsci;
 150         struct opregion_asle __iomem *asle;
 151         void __iomem *vbt;
 152         u32 __iomem *lid_state;
 153 };
 154 #define OPREGION_SIZE            (8*1024)
 155
 156 struct intel_overlay;
 157 struct intel_overlay_error_state;
 158
 159 struct drm_i915_master_private {
 160         drm_local_map_t *sarea;
 161         struct _drm_i915_sarea *sarea_priv;
 162 };
 163 #define I915_FENCE_REG_NONE -1
 164 #define I915_MAX_NUM_FENCES 16
 165 /* 16 fences + sign bit for FENCE_REG_NONE */
 166 #define I915_MAX_NUM_FENCE_BITS 5
 167
 168 struct drm_i915_fence_reg {
 169         struct list_head lru_list;
 170         struct drm_i915_gem_object *obj;
 171         int pin_count;
 172 };
 173
 174 struct sdvo_device_mapping {
 175         u8 initialized;
 176         u8 dvo_port;
 177         u8 slave_addr;
 178         u8 dvo_wiring;
 179         u8 i2c_pin;
 180         u8 ddc_pin;
 181 };
 182
 183 struct intel_display_error_state;
 184
 185 struct drm_i915_error_state {
 186         struct kref ref;
 187         u32 eir;
 188         u32 pgtbl_er;
 189         u32 ier;
 190         u32 ccid;
 191         bool waiting[I915_NUM_RINGS];
 192         u32 pipestat[I915_MAX_PIPES];
 193         u32 tail[I915_NUM_RINGS];
 194         u32 head[I915_NUM_RINGS];
 195         u32 ipeir[I915_NUM_RINGS];
 196         u32 ipehr[I915_NUM_RINGS];
 197         u32 instdone[I915_NUM_RINGS];
 198         u32 acthd[I915_NUM_RINGS];
 199         u32 semaphore_mboxes[I915_NUM_RINGS][I915_NUM_RINGS - 1];
 200         u32 rc_psmi[I915_NUM_RINGS]; /* sleep state */
 201         /* our own tracking of ring head and tail */
 202         u32 cpu_ring_head[I915_NUM_RINGS];
 203         u32 cpu_ring_tail[I915_NUM_RINGS];
 204         u32 error; /* gen6+ */
 205         u32 err_int; /* gen7 */
 206         u32 instpm[I915_NUM_RINGS];
 207         u32 instps[I915_NUM_RINGS];
 208         u32 extra_instdone[I915_NUM_INSTDONE_REG];
 209         u32 seqno[I915_NUM_RINGS];
 210         u64 bbaddr;
 211         u32 fault_reg[I915_NUM_RINGS];
 212         u32 done_reg;
 213         u32 faddr[I915_NUM_RINGS];
 214         u64 fence[I915_MAX_NUM_FENCES];
 215         struct timeval time;
 216         struct drm_i915_error_ring {
 217                 struct drm_i915_error_object {
 218                         int page_count;
 219                         u32 gtt_offset;
 220                         u32 *pages[0];
 221                 } *ringbuffer, *batchbuffer;
 222                 struct drm_i915_error_request {
 223                         long jiffies;
 224                         u32 seqno;
 225                         u32 tail;
 226                 } *requests;
 227                 int num_requests;
 228         } ring[I915_NUM_RINGS];
 229         struct drm_i915_error_buffer {
 230                 u32 size;
 231                 u32 name;
 232                 u32 rseqno, wseqno;
 233                 u32 gtt_offset;
 234                 u32 read_domains;
 235                 u32 write_domain;
 236                 s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
 237                 s32 pinned:2;
 238                 u32 tiling:2;
 239                 u32 dirty:1;
 240                 u32 purgeable:1;
 241                 s32 ring:4;
 242                 u32 cache_level:2;
 243         } *active_bo, *pinned_bo;
 244         u32 active_bo_count, pinned_bo_count;
 245         struct intel_overlay_error_state *overlay;
 246         struct intel_display_error_state *display;
 247 };
 248
 249 struct drm_i915_display_funcs {
 250         bool (*fbc_enabled)(struct drm_device *dev);
 251         void (*enable_fbc)(struct drm_crtc *crtc, unsigned long interval);
 252         void (*disable_fbc)(struct drm_device *dev);
 253         int (*get_display_clock_speed)(struct drm_device *dev);
 254         int (*get_fifo_size)(struct drm_device *dev, int plane);
 255         void (*update_wm)(struct drm_device *dev);
 256         void (*update_sprite_wm)(struct drm_device *dev, int pipe,
 257                                  uint32_t sprite_width, int pixel_size);
 258         void (*update_linetime_wm)(struct drm_device *dev, int pipe,
 259                                  struct drm_display_mode *mode);
 260         int (*crtc_mode_set)(struct drm_crtc *crtc,
 261                              struct drm_display_mode *mode,
 262                              struct drm_display_mode *adjusted_mode,
 263                              int x, int y,
 264                              struct drm_framebuffer *old_fb);
 265         void (*crtc_enable)(struct drm_crtc *crtc);
 266         void (*crtc_disable)(struct drm_crtc *crtc);
 267         void (*off)(struct drm_crtc *crtc);
 268         void (*write_eld)(struct drm_connector *connector,
 269                           struct drm_crtc *crtc);
 270         void (*fdi_link_train)(struct drm_crtc *crtc);
 271         void (*init_clock_gating)(struct drm_device *dev);
 272         void (*init_pch_clock_gating)(struct drm_device *dev);
 273         int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
 274                           struct drm_framebuffer *fb,
 275                           struct drm_i915_gem_object *obj);
 276         int (*update_plane)(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 277                             int x, int y);
 278         /* clock updates for mode set */
 279         /* cursor updates */
 280         /* render clock increase/decrease */
 281         /* display clock increase/decrease */
 282         /* pll clock increase/decrease */
 283 };
 284
 285 struct drm_i915_gt_funcs {
 286         void (*force_wake_get)(struct drm_i915_private *dev_priv);
 287         void (*force_wake_put)(struct drm_i915_private *dev_priv);
 288 };
 289
 290 #define DEV_INFO_FLAGS \
 291         DEV_INFO_FLAG(is_mobile) DEV_INFO_SEP \
 292         DEV_INFO_FLAG(is_i85x) DEV_INFO_SEP \
 293         DEV_INFO_FLAG(is_i915g) DEV_INFO_SEP \
 294         DEV_INFO_FLAG(is_i945gm) DEV_INFO_SEP \
 295         DEV_INFO_FLAG(is_g33) DEV_INFO_SEP \
 296         DEV_INFO_FLAG(need_gfx_hws) DEV_INFO_SEP \
 297         DEV_INFO_FLAG(is_g4x) DEV_INFO_SEP \
 298         DEV_INFO_FLAG(is_pineview) DEV_INFO_SEP \
 299         DEV_INFO_FLAG(is_broadwater) DEV_INFO_SEP \
 300         DEV_INFO_FLAG(is_crestline) DEV_INFO_SEP \
 301         DEV_INFO_FLAG(is_ivybridge) DEV_INFO_SEP \
 302         DEV_INFO_FLAG(is_valleyview) DEV_INFO_SEP \
 303         DEV_INFO_FLAG(is_haswell) DEV_INFO_SEP \
 304         DEV_INFO_FLAG(has_force_wake) DEV_INFO_SEP \
 305         DEV_INFO_FLAG(has_fbc) DEV_INFO_SEP \
 306         DEV_INFO_FLAG(has_pipe_cxsr) DEV_INFO_SEP \
 307         DEV_INFO_FLAG(has_hotplug) DEV_INFO_SEP \
 308         DEV_INFO_FLAG(cursor_needs_physical) DEV_INFO_SEP \
 309         DEV_INFO_FLAG(has_overlay) DEV_INFO_SEP \
 310         DEV_INFO_FLAG(overlay_needs_physical) DEV_INFO_SEP \
 311         DEV_INFO_FLAG(supports_tv) DEV_INFO_SEP \
 312         DEV_INFO_FLAG(has_bsd_ring) DEV_INFO_SEP \
 313         DEV_INFO_FLAG(has_blt_ring) DEV_INFO_SEP \
 314         DEV_INFO_FLAG(has_llc)
 315
 316 struct intel_device_info {
 317         u8 gen;
 318         u8 is_mobile:1;
 319         u8 is_i85x:1;
 320         u8 is_i915g:1;
 321         u8 is_i945gm:1;
 322         u8 is_g33:1;
 323         u8 need_gfx_hws:1;
 324         u8 is_g4x:1;
 325         u8 is_pineview:1;
 326         u8 is_broadwater:1;
 327         u8 is_crestline:1;
 328         u8 is_ivybridge:1;
 329         u8 is_valleyview:1;
 330         u8 has_force_wake:1;
 331         u8 is_haswell:1;
 332         u8 has_fbc:1;
 333         u8 has_pipe_cxsr:1;
 334         u8 has_hotplug:1;
 335         u8 cursor_needs_physical:1;
 336         u8 has_overlay:1;
 337         u8 overlay_needs_physical:1;
 338         u8 supports_tv:1;
 339         u8 has_bsd_ring:1;
 340         u8 has_blt_ring:1;
 341         u8 has_llc:1;
 342 };
 343
 344 #define I915_PPGTT_PD_ENTRIES 512
 345 #define I915_PPGTT_PT_ENTRIES 1024
 346 struct i915_hw_ppgtt {
 347         unsigned num_pd_entries;
 348         struct page **pt_pages;
 349         uint32_t pd_offset;
 350         dma_addr_t *pt_dma_addr;
 351         dma_addr_t scratch_page_dma_addr;
 352 };
 353
 354
 355 /* This must match up with the value previously used for execbuf2.rsvd1. */
 356 #define DEFAULT_CONTEXT_ID 0
 357 struct i915_hw_context {
 358         int id;
 359         bool is_initialized;
 360         struct drm_i915_file_private *file_priv;
 361         struct intel_ring_buffer *ring;
 362         struct drm_i915_gem_object *obj;
 363 };
 364
 365 enum no_fbc_reason {
 366         FBC_NO_OUTPUT, /* no outputs enabled to compress */
 367         FBC_STOLEN_TOO_SMALL, /* not enough space to hold compressed buffers */
 368         FBC_UNSUPPORTED_MODE, /* interlace or doublescanned mode */
 369         FBC_MODE_TOO_LARGE, /* mode too large for compression */
 370         FBC_BAD_PLANE, /* fbc not supported on plane */
 371         FBC_NOT_TILED, /* buffer not tiled */
 372         FBC_MULTIPLE_PIPES, /* more than one pipe active */
 373         FBC_MODULE_PARAM,
 374 };
 375
 376 enum intel_pch {
 377         PCH_NONE = 0,   /* No PCH present */
 378         PCH_IBX,        /* Ibexpeak PCH */
 379         PCH_CPT,        /* Cougarpoint PCH */
 380         PCH_LPT,        /* Lynxpoint PCH */
 381 };
 382
 383 #define QUIRK_PIPEA_FORCE (1<<0)
 384 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
 385 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
 386
 387 struct intel_fbdev;
 388 struct intel_fbc_work;
 389
 390 struct intel_gmbus {
 391         struct i2c_adapter adapter;
 392         bool force_bit;
 393         u32 reg0;
 394         u32 gpio_reg;
 395         struct i2c_algo_bit_data bit_algo;
 396         struct drm_i915_private *dev_priv;
 397 };
 398
 399 typedef struct drm_i915_private {
 400         struct drm_device *dev;
 401
 402         const struct intel_device_info *info;
 403
 404         int relative_constants_mode;
 405
 406         void __iomem *regs;
 407
 408         struct drm_i915_gt_funcs gt;
 409         /** gt_fifo_count and the subsequent register write are synchronized
 410          * with dev->struct_mutex. */
 411         unsigned gt_fifo_count;
 412         /** forcewake_count is protected by gt_lock */
 413         unsigned forcewake_count;
 414         /** gt_lock is also taken in irq contexts. */
 415         struct spinlock gt_lock;
 416
 417         struct intel_gmbus gmbus[GMBUS_NUM_PORTS];
 418
 419         /** gmbus_mutex protects against concurrent usage of the single hw gmbus
 420          * controller on different i2c buses. */
 421         struct mutex gmbus_mutex;
 422
 423         /**
 424          * Base address of the gmbus and gpio block.
 425          */
 426         uint32_t gpio_mmio_base;
 427
 428         struct pci_dev *bridge_dev;
 429         struct intel_ring_buffer ring[I915_NUM_RINGS];
 430         uint32_t next_seqno;
 431
 432         drm_dma_handle_t *status_page_dmah;
 433         uint32_t counter;
 434         struct drm_i915_gem_object *pwrctx;
 435         struct drm_i915_gem_object *renderctx;
 436
 437         struct resource mch_res;
 438
 439         atomic_t irq_received;
 440
 441         /* protects the irq masks */
 442         spinlock_t irq_lock;
 443
 444         /* DPIO indirect register protection */
 445         spinlock_t dpio_lock;
 446
 447         /** Cached value of IMR to avoid reads in updating the bitfield */
 448         u32 pipestat[2];
 449         u32 irq_mask;
 450         u32 gt_irq_mask;
 451         u32 pch_irq_mask;
 452
 453         u32 hotplug_supported_mask;
 454         struct work_struct hotplug_work;
 455
 456         int num_pipe;
 457         int num_pch_pll;
 458
 459         /* For hangcheck timer */
 460 #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */
 461 #define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)
 462         struct timer_list hangcheck_timer;
 463         int hangcheck_count;
 464         uint32_t last_acthd[I915_NUM_RINGS];
 465         uint32_t prev_instdone[I915_NUM_INSTDONE_REG];
 466
 467         unsigned int stop_rings;
 468
 469         unsigned long cfb_size;
 470         unsigned int cfb_fb;
 471         enum plane cfb_plane;
 472         int cfb_y;
 473         struct intel_fbc_work *fbc_work;
 474
 475         struct intel_opregion opregion;
 476
 477         /* overlay */
 478         struct intel_overlay *overlay;
 479         bool sprite_scaling_enabled;
 480
 481         /* LVDS info */
 482         int backlight_level;  /* restore backlight to this value */
 483         bool backlight_enabled;
 484         struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
 485         struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
 486
 487         /* Feature bits from the VBIOS */
 488         unsigned int int_tv_support:1;
 489         unsigned int lvds_dither:1;
 490         unsigned int lvds_vbt:1;
 491         unsigned int int_crt_support:1;
 492         unsigned int lvds_use_ssc:1;
 493         unsigned int display_clock_mode:1;
 494         int lvds_ssc_freq;
 495         unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
 496         unsigned int lvds_val; /* used for checking LVDS channel mode */
 497         struct {
 498                 int rate;
 499                 int lanes;
 500                 int preemphasis;
 501                 int vswing;
 502
 503                 bool initialized;
 504                 bool support;
 505                 int bpp;
 506                 struct edp_power_seq pps;
 507         } edp;
 508         bool no_aux_handshake;
 509
 510         int crt_ddc_pin;
 511         struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
 512         int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
 513         int num_fence_regs; /* 8 on pre-965, 16 otherwise */
 514
 515         unsigned int fsb_freq, mem_freq, is_ddr3;
 516
 517         spinlock_t error_lock;
 518         /* Protected by dev->error_lock. */
 519         struct drm_i915_error_state *first_error;
 520         struct work_struct error_work;
 521         struct completion error_completion;
 522         struct workqueue_struct *wq;
 523
 524         /* Display functions */
 525         struct drm_i915_display_funcs display;
 526
 527         /* PCH chipset type */
 528         enum intel_pch pch_type;
 529
 530         unsigned long quirks;
 531
 532         /* Register state */
 533         bool modeset_on_lid;
 534         u8 saveLBB;
 535         u32 saveDSPACNTR;
 536         u32 saveDSPBCNTR;
 537         u32 saveDSPARB;
 538         u32 saveHWS;
 539         u32 savePIPEACONF;
 540         u32 savePIPEBCONF;
 541         u32 savePIPEASRC;
 542         u32 savePIPEBSRC;
 543         u32 saveFPA0;
 544         u32 saveFPA1;
 545         u32 saveDPLL_A;
 546         u32 saveDPLL_A_MD;
 547         u32 saveHTOTAL_A;
 548         u32 saveHBLANK_A;
 549         u32 saveHSYNC_A;
 550         u32 saveVTOTAL_A;
 551         u32 saveVBLANK_A;
 552         u32 saveVSYNC_A;
 553         u32 saveBCLRPAT_A;
 554         u32 saveTRANSACONF;
 555         u32 saveTRANS_HTOTAL_A;
 556         u32 saveTRANS_HBLANK_A;
 557         u32 saveTRANS_HSYNC_A;
 558         u32 saveTRANS_VTOTAL_A;
 559         u32 saveTRANS_VBLANK_A;
 560         u32 saveTRANS_VSYNC_A;
 561         u32 savePIPEASTAT;
 562         u32 saveDSPASTRIDE;
 563         u32 saveDSPASIZE;
 564         u32 saveDSPAPOS;
 565         u32 saveDSPAADDR;
 566         u32 saveDSPASURF;
 567         u32 saveDSPATILEOFF;
 568         u32 savePFIT_PGM_RATIOS;
 569         u32 saveBLC_HIST_CTL;
 570         u32 saveBLC_PWM_CTL;
 571         u32 saveBLC_PWM_CTL2;
 572         u32 saveBLC_CPU_PWM_CTL;
 573         u32 saveBLC_CPU_PWM_CTL2;
 574         u32 saveFPB0;
 575         u32 saveFPB1;
 576         u32 saveDPLL_B;
 577         u32 saveDPLL_B_MD;
 578         u32 saveHTOTAL_B;
 579         u32 saveHBLANK_B;
 580         u32 saveHSYNC_B;
 581         u32 saveVTOTAL_B;
 582         u32 saveVBLANK_B;
 583         u32 saveVSYNC_B;
 584         u32 saveBCLRPAT_B;
 585         u32 saveTRANSBCONF;
 586         u32 saveTRANS_HTOTAL_B;
 587         u32 saveTRANS_HBLANK_B;
 588         u32 saveTRANS_HSYNC_B;
 589         u32 saveTRANS_VTOTAL_B;
 590         u32 saveTRANS_VBLANK_B;
 591         u32 saveTRANS_VSYNC_B;
 592         u32 savePIPEBSTAT;
 593         u32 saveDSPBSTRIDE;
 594         u32 saveDSPBSIZE;
 595         u32 saveDSPBPOS;
 596         u32 saveDSPBADDR;
 597         u32 saveDSPBSURF;
 598         u32 saveDSPBTILEOFF;
 599         u32 saveVGA0;
 600         u32 saveVGA1;
 601         u32 saveVGA_PD;
 602         u32 saveVGACNTRL;
 603         u32 saveADPA;
 604         u32 saveLVDS;
 605         u32 savePP_ON_DELAYS;
 606         u32 savePP_OFF_DELAYS;
 607         u32 saveDVOA;
 608         u32 saveDVOB;
 609         u32 saveDVOC;
 610         u32 savePP_ON;
 611         u32 savePP_OFF;
 612         u32 savePP_CONTROL;
 613         u32 savePP_DIVISOR;
 614         u32 savePFIT_CONTROL;
 615         u32 save_palette_a[256];
 616         u32 save_palette_b[256];
 617         u32 saveDPFC_CB_BASE;
 618         u32 saveFBC_CFB_BASE;
 619         u32 saveFBC_LL_BASE;
 620         u32 saveFBC_CONTROL;
 621         u32 saveFBC_CONTROL2;
 622         u32 saveIER;
 623         u32 saveIIR;
 624         u32 saveIMR;
 625         u32 saveDEIER;
 626         u32 saveDEIMR;
 627         u32 saveGTIER;
 628         u32 saveGTIMR;
 629         u32 saveFDI_RXA_IMR;
 630         u32 saveFDI_RXB_IMR;
 631         u32 saveCACHE_MODE_0;
 632         u32 saveMI_ARB_STATE;
 633         u32 saveSWF0[16];
 634         u32 saveSWF1[16];
 635         u32 saveSWF2[3];
 636         u8 saveMSR;
 637         u8 saveSR[8];
 638         u8 saveGR[25];
 639         u8 saveAR_INDEX;
 640         u8 saveAR[21];
 641         u8 saveDACMASK;
 642         u8 saveCR[37];
 643         uint64_t saveFENCE[I915_MAX_NUM_FENCES];
 644         u32 saveCURACNTR;
 645         u32 saveCURAPOS;
 646         u32 saveCURABASE;
 647         u32 saveCURBCNTR;
 648         u32 saveCURBPOS;
 649         u32 saveCURBBASE;
 650         u32 saveCURSIZE;
 651         u32 saveDP_B;
 652         u32 saveDP_C;
 653         u32 saveDP_D;
 654         u32 savePIPEA_GMCH_DATA_M;
 655         u32 savePIPEB_GMCH_DATA_M;
 656         u32 savePIPEA_GMCH_DATA_N;
 657         u32 savePIPEB_GMCH_DATA_N;
 658         u32 savePIPEA_DP_LINK_M;
 659         u32 savePIPEB_DP_LINK_M;
 660         u32 savePIPEA_DP_LINK_N;
 661         u32 savePIPEB_DP_LINK_N;
 662         u32 saveFDI_RXA_CTL;
 663         u32 saveFDI_TXA_CTL;
 664         u32 saveFDI_RXB_CTL;
 665         u32 saveFDI_TXB_CTL;
 666         u32 savePFA_CTL_1;
 667         u32 savePFB_CTL_1;
 668         u32 savePFA_WIN_SZ;
 669         u32 savePFB_WIN_SZ;
 670         u32 savePFA_WIN_POS;
 671         u32 savePFB_WIN_POS;
 672         u32 savePCH_DREF_CONTROL;
 673         u32 saveDISP_ARB_CTL;
 674         u32 savePIPEA_DATA_M1;
 675         u32 savePIPEA_DATA_N1;
 676         u32 savePIPEA_LINK_M1;
 677         u32 savePIPEA_LINK_N1;
 678         u32 savePIPEB_DATA_M1;
 679         u32 savePIPEB_DATA_N1;
 680         u32 savePIPEB_LINK_M1;
 681         u32 savePIPEB_LINK_N1;
 682         u32 saveMCHBAR_RENDER_STANDBY;
 683         u32 savePCH_PORT_HOTPLUG;
 684
 685         struct {
 686                 /** Bridge to intel-gtt-ko */
 687                 const struct intel_gtt *gtt;
 688                 /** Memory allocator for GTT stolen memory */
 689                 struct drm_mm stolen;
 690                 /** Memory allocator for GTT */
 691                 struct drm_mm gtt_space;
 692                 /** List of all objects in gtt_space. Used to restore gtt
 693                  * mappings on resume */
 694                 struct list_head bound_list;
 695                 /**
 696                  * List of objects which are not bound to the GTT (thus
 697                  * are idle and not used by the GPU) but still have
 698                  * (presumably uncached) pages still attached.
 699                  */
 700                 struct list_head unbound_list;
 701
 702                 /** Usable portion of the GTT for GEM */
 703                 unsigned long gtt_start;
 704                 unsigned long gtt_mappable_end;
 705                 unsigned long gtt_end;
 706
 707                 struct io_mapping *gtt_mapping;
 708                 phys_addr_t gtt_base_addr;
 709                 int gtt_mtrr;
 710
 711                 /** PPGTT used for aliasing the PPGTT with the GTT */
 712                 struct i915_hw_ppgtt *aliasing_ppgtt;
 713
 714                 u32 *l3_remap_info;
 715
 716                 struct shrinker inactive_shrinker;
 717
 718                 /**
 719                  * List of objects currently involved in rendering.
 720                  *
 721                  * Includes buffers having the contents of their GPU caches
 722                  * flushed, not necessarily primitives.  last_rendering_seqno
 723                  * represents when the rendering involved will be completed.
 724                  *
 725                  * A reference is held on the buffer while on this list.
 726                  */
 727                 struct list_head active_list;
 728
 729                 /**
 730                  * LRU list of objects which are not in the ringbuffer and
 731                  * are ready to unbind, but are still in the GTT.
 732                  *
 733                  * last_rendering_seqno is 0 while an object is in this list.
 734                  *
 735                  * A reference is not held on the buffer while on this list,
 736                  * as merely being GTT-bound shouldn't prevent its being
 737                  * freed, and we'll pull it off the list in the free path.
 738                  */
 739                 struct list_head inactive_list;
 740
 741                 /** LRU list of objects with fence regs on them. */
 742                 struct list_head fence_list;
 743
 744                 /**
 745                  * We leave the user IRQ off as much as possible,
 746                  * but this means that requests will finish and never
 747                  * be retired once the system goes idle. Set a timer to
 748                  * fire periodically while the ring is running. When it
 749                  * fires, go retire requests.
 750                  */
 751                 struct delayed_work retire_work;
 752
 753                 /**
 754                  * Are we in a non-interruptible section of code like
 755                  * modesetting?
 756                  */
 757                 bool interruptible;
 758
 759                 /**
 760                  * Flag if the X Server, and thus DRM, is not currently in
 761                  * control of the device.
 762                  *
 763                  * This is set between LeaveVT and EnterVT.  It needs to be
 764                  * replaced with a semaphore.  It also needs to be
 765                  * transitioned away from for kernel modesetting.
 766                  */
 767                 int suspended;
 768
 769                 /**
 770                  * Flag if the hardware appears to be wedged.
 771                  *
 772                  * This is set when attempts to idle the device timeout.
 773                  * It prevents command submission from occurring and makes
 774                  * every pending request fail
 775                  */
 776                 atomic_t wedged;
 777
 778                 /** Bit 6 swizzling required for X tiling */
 779                 uint32_t bit_6_swizzle_x;
 780                 /** Bit 6 swizzling required for Y tiling */
 781                 uint32_t bit_6_swizzle_y;
 782
 783                 /* storage for physical objects */
 784                 struct drm_i915_gem_phys_object *phys_objs[I915_MAX_PHYS_OBJECT];
 785
 786                 /* accounting, useful for userland debugging */
 787                 size_t gtt_total;
 788                 size_t mappable_gtt_total;
 789                 size_t object_memory;
 790                 u32 object_count;
 791         } mm;
 792
 793         /* Old dri1 support infrastructure, beware the dragons ya fools entering
 794          * here! */
 795         struct {
 796                 unsigned allow_batchbuffer : 1;
 797                 u32 __iomem *gfx_hws_cpu_addr;
 798
 799                 unsigned int cpp;
 800                 int back_offset;
 801                 int front_offset;
 802                 int current_page;
 803                 int page_flipping;
 804         } dri1;
 805
 806         /* Kernel Modesetting */
 807
 808         struct sdvo_device_mapping sdvo_mappings[2];
 809         /* indicate whether the LVDS_BORDER should be enabled or not */
 810         unsigned int lvds_border_bits;
 811         /* Panel fitter placement and size for Ironlake+ */
 812         u32 pch_pf_pos, pch_pf_size;
 813
 814         struct drm_crtc *plane_to_crtc_mapping[3];
 815         struct drm_crtc *pipe_to_crtc_mapping[3];
 816         wait_queue_head_t pending_flip_queue;
 817
 818         struct intel_pch_pll pch_plls[I915_NUM_PLLS];
 819         struct intel_ddi_plls ddi_plls;
 820
 821         /* Reclocking support */
 822         bool render_reclock_avail;
 823         bool lvds_downclock_avail;
 824         /* indicates the reduced downclock for LVDS*/
 825         int lvds_downclock;
 826         u16 orig_clock;
 827         int child_dev_num;
 828         struct child_device_config *child_dev;
 829         struct drm_connector *int_lvds_connector;
 830         struct drm_connector *int_edp_connector;
 831
 832         bool mchbar_need_disable;
 833
 834         /* gen6+ rps state */
 835         struct {
 836                 struct work_struct work;
 837                 u32 pm_iir;
 838                 /* lock - irqsave spinlock that protectects the work_struct and
 839                  * pm_iir. */
 840                 spinlock_t lock;
 841
 842                 /* The below variables an all the rps hw state are protected by
 843                  * dev->struct mutext. */
 844                 u8 cur_delay;
 845                 u8 min_delay;
 846                 u8 max_delay;
 847         } rps;
 848
 849         /* ilk-only ips/rps state. Everything in here is protected by the global
 850          * mchdev_lock in intel_pm.c */
 851         struct {
 852                 u8 cur_delay;
 853                 u8 min_delay;
 854                 u8 max_delay;
 855                 u8 fmax;
 856                 u8 fstart;
 857
 858                 u64 last_count1;
 859                 unsigned long last_time1;
 860                 unsigned long chipset_power;
 861                 u64 last_count2;
 862                 struct timespec last_time2;
 863                 unsigned long gfx_power;
 864                 u8 corr;
 865
 866                 int c_m;
 867                 int r_t;
 868         } ips;
 869
 870         enum no_fbc_reason no_fbc_reason;
 871
 872         struct drm_mm_node *compressed_fb;
 873         struct drm_mm_node *compressed_llb;
 874
 875         unsigned long last_gpu_reset;
 876
 877         /* list of fbdev register on this device */
 878         struct intel_fbdev *fbdev;
 879
 880         struct backlight_device *backlight;
 881
 882         struct drm_property *broadcast_rgb_property;
 883         struct drm_property *force_audio_property;
 884
 885         struct work_struct parity_error_work;
 886         bool hw_contexts_disabled;
 887         uint32_t hw_context_size;
 888 } drm_i915_private_t;
 889
 890 /* Iterate over initialised rings */
 891 #define for_each_ring(ring__, dev_priv__, i__) \
 892         for ((i__) = 0; (i__) < I915_NUM_RINGS; (i__)++) \
 893                 if (((ring__) = &(dev_priv__)->ring[(i__)]), intel_ring_initialized((ring__)))
 894
 895 enum hdmi_force_audio {
 896         HDMI_AUDIO_OFF_DVI = -2,        /* no aux data for HDMI-DVI converter */
 897         HDMI_AUDIO_OFF,                 /* force turn off HDMI audio */
 898         HDMI_AUDIO_AUTO,                /* trust EDID */
 899         HDMI_AUDIO_ON,                  /* force turn on HDMI audio */
 900 };
 901
 902 enum i915_cache_level {
 903         I915_CACHE_NONE = 0,
 904         I915_CACHE_LLC,
 905         I915_CACHE_LLC_MLC, /* gen6+, in docs at least! */
 906 };
 907
 908 struct drm_i915_gem_object_ops {
 909         /* Interface between the GEM object and its backing storage.
 910          * get_pages() is called once prior to the use of the associated set
 911          * of pages before to binding them into the GTT, and put_pages() is
 912          * called after we no longer need them. As we expect there to be
 913          * associated cost with migrating pages between the backing storage
 914          * and making them available for the GPU (e.g. clflush), we may hold
 915          * onto the pages after they are no longer referenced by the GPU
 916          * in case they may be used again shortly (for example migrating the
 917          * pages to a different memory domain within the GTT). put_pages()
 918          * will therefore most likely be called when the object itself is
 919          * being released or under memory pressure (where we attempt to
 920          * reap pages for the shrinker).
 921          */
 922         int (*get_pages)(struct drm_i915_gem_object *);
 923         void (*put_pages)(struct drm_i915_gem_object *);
 924 };
 925
 926 struct drm_i915_gem_object {
 927         struct drm_gem_object base;
 928
 929         const struct drm_i915_gem_object_ops *ops;
 930
 931         /** Current space allocated to this object in the GTT, if any. */
 932         struct drm_mm_node *gtt_space;
 933         struct list_head gtt_list;
 934
 935         /** This object's place on the active/inactive lists */
 936         struct list_head ring_list;
 937         struct list_head mm_list;
 938         /** This object's place in the batchbuffer or on the eviction list */
 939         struct list_head exec_list;
 940
 941         /**
 942          * This is set if the object is on the active lists (has pending
 943          * rendering and so a non-zero seqno), and is not set if it i s on
 944          * inactive (ready to be unbound) list.
 945          */
 946         unsigned int active:1;
 947
 948         /**
 949          * This is set if the object has been written to since last bound
 950          * to the GTT
 951          */
 952         unsigned int dirty:1;
 953
 954         /**
 955          * Fence register bits (if any) for this object.  Will be set
 956          * as needed when mapped into the GTT.
 957          * Protected by dev->struct_mutex.
 958          */
 959         signed int fence_reg:I915_MAX_NUM_FENCE_BITS;
 960
 961         /**
 962          * Advice: are the backing pages purgeable?
 963          */
 964         unsigned int madv:2;
 965
 966         /**
 967          * Current tiling mode for the object.
 968          */
 969         unsigned int tiling_mode:2;
 970         /**
 971          * Whether the tiling parameters for the currently associated fence
 972          * register have changed. Note that for the purposes of tracking
 973          * tiling changes we also treat the unfenced register, the register
 974          * slot that the object occupies whilst it executes a fenced
 975          * command (such as BLT on gen2/3), as a "fence".
 976          */
 977         unsigned int fence_dirty:1;
 978
 979         /** How many users have pinned this object in GTT space. The following
 980          * users can each hold at most one reference: pwrite/pread, pin_ioctl
 981          * (via user_pin_count), execbuffer (objects are not allowed multiple
 982          * times for the same batchbuffer), and the framebuffer code. When
 983          * switching/pageflipping, the framebuffer code has at most two buffers
 984          * pinned per crtc.
 985          *
 986          * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3
 987          * bits with absolutely no headroom. So use 4 bits. */
 988         unsigned int pin_count:4;
 989 #define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf
 990
 991         /**
 992          * Is the object at the current location in the gtt mappable and
 993          * fenceable? Used to avoid costly recalculations.
 994          */
 995         unsigned int map_and_fenceable:1;
 996
 997         /**
 998          * Whether the current gtt mapping needs to be mappable (and isn't just
 999          * mappable by accident). Track pin and fault separate for a more
1000          * accurate mappable working set.
1001          */
1002         unsigned int fault_mappable:1;
1003         unsigned int pin_mappable:1;
1004
1005         /*
1006          * Is the GPU currently using a fence to access this buffer,
1007          */
1008         unsigned int pending_fenced_gpu_access:1;
1009         unsigned int fenced_gpu_access:1;
1010
1011         unsigned int cache_level:2;
1012
1013         unsigned int has_aliasing_ppgtt_mapping:1;
1014         unsigned int has_global_gtt_mapping:1;
1015         unsigned int has_dma_mapping:1;
1016
1017         struct sg_table *pages;
1018         int pages_pin_count;
1019
1020         /* prime dma-buf support */
1021         void *dma_buf_vmapping;
1022         int vmapping_count;
1023
1024         /**
1025          * Used for performing relocations during execbuffer insertion.
1026          */
1027         struct hlist_node exec_node;
1028         unsigned long exec_handle;
1029         struct drm_i915_gem_exec_object2 *exec_entry;
1030
1031         /**
1032          * Current offset of the object in GTT space.
1033          *
1034          * This is the same as gtt_space->start
1035          */
1036         uint32_t gtt_offset;
1037
1038         struct intel_ring_buffer *ring;
1039
1040         /** Breadcrumb of last rendering to the buffer. */
1041         uint32_t last_read_seqno;
1042         uint32_t last_write_seqno;
1043         /** Breadcrumb of last fenced GPU access to the buffer. */
1044         uint32_t last_fenced_seqno;
1045
1046         /** Current tiling stride for the object, if it's tiled. */
1047         uint32_t stride;
1048
1049         /** Record of address bit 17 of each page at last unbind. */
1050         unsigned long *bit_17;
1051
1052         /** User space pin count and filp owning the pin */
1053         uint32_t user_pin_count;
1054         struct drm_file *pin_filp;
1055
1056         /** for phy allocated objects */
1057         struct drm_i915_gem_phys_object *phys_obj;
1058
1059         /**
1060          * Number of crtcs where this object is currently the fb, but
1061          * will be page flipped away on the next vblank.  When it
1062          * reaches 0, dev_priv->pending_flip_queue will be woken up.
1063          */
1064         atomic_t pending_flip;
1065 };
1066
1067 #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
1068
1069 /**
1070  * Request queue structure.
1071  *
1072  * The request queue allows us to note sequence numbers that have been emitted
1073  * and may be associated with active buffers to be retired.
1074  *
1075  * By keeping this list, we can avoid having to do questionable
1076  * sequence-number comparisons on buffer last_rendering_seqnos, and associate
1077  * an emission time with seqnos for tracking how far ahead of the GPU we are.
1078  */
1079 struct drm_i915_gem_request {
1080         /** On Which ring this request was generated */
1081         struct intel_ring_buffer *ring;
1082
1083         /** GEM sequence number associated with this request. */
1084         uint32_t seqno;
1085
1086         /** Postion in the ringbuffer of the end of the request */
1087         u32 tail;
1088
1089         /** Time at which this request was emitted, in jiffies. */
1090         unsigned long emitted_jiffies;
1091
1092         /** global list entry for this request */
1093         struct list_head list;
1094
1095         struct drm_i915_file_private *file_priv;
1096         /** file_priv list entry for this request */
1097         struct list_head client_list;
1098 };
1099
1100 struct drm_i915_file_private {
1101         struct {
1102                 struct spinlock lock;
1103                 struct list_head request_list;
1104         } mm;
1105         struct idr context_idr;
1106 };
1107
1108 #define INTEL_INFO(dev) (((struct drm_i915_private *) (dev)->dev_private)->info)
1109
1110 #define IS_I830(dev)            ((dev)->pci_device == 0x3577)
1111 #define IS_845G(dev)            ((dev)->pci_device == 0x2562)
1112 #define IS_I85X(dev)            (INTEL_INFO(dev)->is_i85x)
1113 #define IS_I865G(dev)           ((dev)->pci_device == 0x2572)
1114 #define IS_I915G(dev)           (INTEL_INFO(dev)->is_i915g)
1115 #define IS_I915GM(dev)          ((dev)->pci_device == 0x2592)
1116 #define IS_I945G(dev)           ((dev)->pci_device == 0x2772)
1117 #define IS_I945GM(dev)          (INTEL_INFO(dev)->is_i945gm)
1118 #define IS_BROADWATER(dev)      (INTEL_INFO(dev)->is_broadwater)
1119 #define IS_CRESTLINE(dev)       (INTEL_INFO(dev)->is_crestline)
1120 #define IS_GM45(dev)            ((dev)->pci_device == 0x2A42)
1121 #define IS_G4X(dev)             (INTEL_INFO(dev)->is_g4x)
1122 #define IS_PINEVIEW_G(dev)      ((dev)->pci_device == 0xa001)
1123 #define IS_PINEVIEW_M(dev)      ((dev)->pci_device == 0xa011)
1124 #define IS_PINEVIEW(dev)        (INTEL_INFO(dev)->is_pineview)
1125 #define IS_G33(dev)             (INTEL_INFO(dev)->is_g33)
1126 #define IS_IRONLAKE_D(dev)      ((dev)->pci_device == 0x0042)
1127 #define IS_IRONLAKE_M(dev)      ((dev)->pci_device == 0x0046)
1128 #define IS_IVYBRIDGE(dev)       (INTEL_INFO(dev)->is_ivybridge)
1129 #define IS_VALLEYVIEW(dev)      (INTEL_INFO(dev)->is_valleyview)
1130 #define IS_HASWELL(dev) (INTEL_INFO(dev)->is_haswell)
1131 #define IS_MOBILE(dev)          (INTEL_INFO(dev)->is_mobile)
1132
1133 /*
1134  * The genX designation typically refers to the render engine, so render
1135  * capability related checks should use IS_GEN, while display and other checks
1136  * have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
1137  * chips, etc.).
1138  */
1139 #define IS_GEN2(dev)    (INTEL_INFO(dev)->gen == 2)
1140 #define IS_GEN3(dev)    (INTEL_INFO(dev)->gen == 3)
1141 #define IS_GEN4(dev)    (INTEL_INFO(dev)->gen == 4)
1142 #define IS_GEN5(dev)    (INTEL_INFO(dev)->gen == 5)
1143 #define IS_GEN6(dev)    (INTEL_INFO(dev)->gen == 6)
1144 #define IS_GEN7(dev)    (INTEL_INFO(dev)->gen == 7)
1145
1146 #define HAS_BSD(dev)            (INTEL_INFO(dev)->has_bsd_ring)
1147 #define HAS_BLT(dev)            (INTEL_INFO(dev)->has_blt_ring)
1148 #define HAS_LLC(dev)            (INTEL_INFO(dev)->has_llc)
1149 #define I915_NEED_GFX_HWS(dev)  (INTEL_INFO(dev)->need_gfx_hws)
1150
1151 #define HAS_HW_CONTEXTS(dev)    (INTEL_INFO(dev)->gen >= 6)
1152 #define HAS_ALIASING_PPGTT(dev) (INTEL_INFO(dev)->gen >=6 && !IS_VALLEYVIEW(dev))
1153
1154 #define HAS_OVERLAY(dev)                (INTEL_INFO(dev)->has_overlay)
1155 #define OVERLAY_NEEDS_PHYSICAL(dev)     (INTEL_INFO(dev)->overlay_needs_physical)
1156
1157 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
1158  * rows, which changed the alignment requirements and fence programming.
1159  */
1160 #define HAS_128_BYTE_Y_TILING(dev) (!IS_GEN2(dev) && !(IS_I915G(dev) || \
1161                                                       IS_I915GM(dev)))
1162 #define SUPPORTS_DIGITAL_OUTPUTS(dev)   (!IS_GEN2(dev) && !IS_PINEVIEW(dev))
1163 #define SUPPORTS_INTEGRATED_HDMI(dev)   (IS_G4X(dev) || IS_GEN5(dev))
1164 #define SUPPORTS_INTEGRATED_DP(dev)     (IS_G4X(dev) || IS_GEN5(dev))
1165 #define SUPPORTS_EDP(dev)               (IS_IRONLAKE_M(dev))
1166 #define SUPPORTS_TV(dev)                (INTEL_INFO(dev)->supports_tv)
1167 #define I915_HAS_HOTPLUG(dev)            (INTEL_INFO(dev)->has_hotplug)
1168 /* dsparb controlled by hw only */
1169 #define DSPARB_HWCONTROL(dev) (IS_G4X(dev) || IS_IRONLAKE(dev))
1170
1171 #define HAS_FW_BLC(dev) (INTEL_INFO(dev)->gen > 2)
1172 #define HAS_PIPE_CXSR(dev) (INTEL_INFO(dev)->has_pipe_cxsr)
1173 #define I915_HAS_FBC(dev) (INTEL_INFO(dev)->has_fbc)
1174
1175 #define HAS_PIPE_CONTROL(dev) (INTEL_INFO(dev)->gen >= 5)
1176
1177 #define INTEL_PCH_TYPE(dev) (((struct drm_i915_private *)(dev)->dev_private)->pch_type)
1178 #define HAS_PCH_LPT(dev) (INTEL_PCH_TYPE(dev) == PCH_LPT)
1179 #define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
1180 #define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
1181 #define HAS_PCH_SPLIT(dev) (INTEL_PCH_TYPE(dev) != PCH_NONE)
1182
1183 #define HAS_FORCE_WAKE(dev) (INTEL_INFO(dev)->has_force_wake)
1184
1185 #define HAS_L3_GPU_CACHE(dev) (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
1186
1187 #define GT_FREQUENCY_MULTIPLIER 50
1188
1189 #include "i915_trace.h"
1190
1191 /**
1192  * RC6 is a special power stage which allows the GPU to enter an very
1193  * low-voltage mode when idle, using down to 0V while at this stage.  This
1194  * stage is entered automatically when the GPU is idle when RC6 support is
1195  * enabled, and as soon as new workload arises GPU wakes up automatically as well.
1196  *
1197  * There are different RC6 modes available in Intel GPU, which differentiate
1198  * among each other with the latency required to enter and leave RC6 and
1199  * voltage consumed by the GPU in different states.
1200  *
1201  * The combination of the following flags define which states GPU is allowed
1202  * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and
1203  * RC6pp is deepest RC6. Their support by hardware varies according to the
1204  * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one
1205  * which brings the most power savings; deeper states save more power, but
1206  * require higher latency to switch to and wake up.
1207  */
1208 #define INTEL_RC6_ENABLE                        (1<<0)
1209 #define INTEL_RC6p_ENABLE                       (1<<1)
1210 #define INTEL_RC6pp_ENABLE                      (1<<2)
1211
1212 extern struct drm_ioctl_desc i915_ioctls[];
1213 extern int i915_max_ioctl;
1214 extern unsigned int i915_fbpercrtc __always_unused;
1215 extern int i915_panel_ignore_lid __read_mostly;
1216 extern unsigned int i915_powersave __read_mostly;
1217 extern int i915_semaphores __read_mostly;
1218 extern unsigned int i915_lvds_downclock __read_mostly;
1219 extern int i915_lvds_channel_mode __read_mostly;
1220 extern int i915_panel_use_ssc __read_mostly;
1221 extern int i915_vbt_sdvo_panel_type __read_mostly;
1222 extern int i915_enable_rc6 __read_mostly;
1223 extern int i915_enable_fbc __read_mostly;
1224 extern bool i915_enable_hangcheck __read_mostly;
1225 extern int i915_enable_ppgtt __read_mostly;
1226
1227 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
1228 extern int i915_resume(struct drm_device *dev);
1229 extern int i915_master_create(struct drm_device *dev, struct drm_master *master);
1230 extern void i915_master_destroy(struct drm_device *dev, struct drm_master *master);
1231
1232                                 /* i915_dma.c */
1233 void i915_update_dri1_breadcrumb(struct drm_device *dev);
1234 extern void i915_kernel_lost_context(struct drm_device * dev);
1235 extern int i915_driver_load(struct drm_device *, unsigned long flags);
1236 extern int i915_driver_unload(struct drm_device *);
1237 extern int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv);
1238 extern void i915_driver_lastclose(struct drm_device * dev);
1239 extern void i915_driver_preclose(struct drm_device *dev,
1240                                  struct drm_file *file_priv);
1241 extern void i915_driver_postclose(struct drm_device *dev,
1242                                   struct drm_file *file_priv);
1243 extern int i915_driver_device_is_agp(struct drm_device * dev);
1244 #ifdef CONFIG_COMPAT
1245 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
1246                               unsigned long arg);
1247 #endif
1248 extern int i915_emit_box(struct drm_device *dev,
1249                          struct drm_clip_rect *box,
1250                          int DR1, int DR4);
1251 extern int intel_gpu_reset(struct drm_device *dev);
1252 extern int i915_reset(struct drm_device *dev);
1253 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
1254 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
1255 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
1256 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
1257
1258
1259 /* i915_irq.c */
1260 void i915_hangcheck_elapsed(unsigned long data);
1261 void i915_handle_error(struct drm_device *dev, bool wedged);
1262
1263 extern void intel_irq_init(struct drm_device *dev);
1264 extern void intel_gt_init(struct drm_device *dev);
1265 extern void intel_gt_reset(struct drm_device *dev);
1266
1267 void i915_error_state_free(struct kref *error_ref);
1268
1269 void
1270 i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
1271
1272 void
1273 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
1274
1275 void intel_enable_asle(struct drm_device *dev);
1276
1277 #ifdef CONFIG_DEBUG_FS
1278 extern void i915_destroy_error_state(struct drm_device *dev);
1279 #else
1280 #define i915_destroy_error_state(x)
1281 #endif
1282
1283
1284 /* i915_gem.c */
1285 int i915_gem_init_ioctl(struct drm_device *dev, void *data,
1286                         struct drm_file *file_priv);
1287 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
1288                           struct drm_file *file_priv);
1289 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
1290                          struct drm_file *file_priv);
1291 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
1292                           struct drm_file *file_priv);
1293 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
1294                         struct drm_file *file_priv);
1295 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
1296                         struct drm_file *file_priv);
1297 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
1298                               struct drm_file *file_priv);
1299 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
1300                              struct drm_file *file_priv);
1301 int i915_gem_execbuffer(struct drm_device *dev, void *data,
1302                         struct drm_file *file_priv);
1303 int i915_gem_execbuffer2(struct drm_device *dev, void *data,
1304                          struct drm_file *file_priv);
1305 int i915_gem_pin_ioctl(struct drm_device *dev, void *data,
1306                        struct drm_file *file_priv);
1307 int i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
1308                          struct drm_file *file_priv);
1309 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
1310                         struct drm_file *file_priv);
1311 int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
1312                                struct drm_file *file);
1313 int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
1314                                struct drm_file *file);
1315 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
1316                             struct drm_file *file_priv);
1317 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
1318                            struct drm_file *file_priv);
1319 int i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
1320                            struct drm_file *file_priv);
1321 int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
1322                            struct drm_file *file_priv);
1323 int i915_gem_set_tiling(struct drm_device *dev, void *data,
1324                         struct drm_file *file_priv);
1325 int i915_gem_get_tiling(struct drm_device *dev, void *data,
1326                         struct drm_file *file_priv);
1327 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
1328                                 struct drm_file *file_priv);
1329 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
1330                         struct drm_file *file_priv);
1331 void i915_gem_load(struct drm_device *dev);
1332 int i915_gem_init_object(struct drm_gem_object *obj);
1333 void i915_gem_object_init(struct drm_i915_gem_object *obj,
1334                          const struct drm_i915_gem_object_ops *ops);
1335 struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
1336                                                   size_t size);
1337 void i915_gem_free_object(struct drm_gem_object *obj);
1338 int __must_check i915_gem_object_pin(struct drm_i915_gem_object *obj,
1339                                      uint32_t alignment,
1340                                      bool map_and_fenceable,
1341                                      bool nonblocking);
1342 void i915_gem_object_unpin(struct drm_i915_gem_object *obj);
1343 int __must_check i915_gem_object_unbind(struct drm_i915_gem_object *obj);
1344 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
1345 void i915_gem_lastclose(struct drm_device *dev);
1346
1347 int __must_check i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
1348 static inline struct page *i915_gem_object_get_page(struct drm_i915_gem_object *obj, int n)
1349 {
1350         struct scatterlist *sg = obj->pages->sgl;
1351         int nents = obj->pages->nents;
1352         while (nents > SG_MAX_SINGLE_ALLOC) {
1353                 if (n < SG_MAX_SINGLE_ALLOC - 1)
1354                         break;
1355
1356                 sg = sg_chain_ptr(sg + SG_MAX_SINGLE_ALLOC - 1);
1357                 n -= SG_MAX_SINGLE_ALLOC - 1;
1358                 nents -= SG_MAX_SINGLE_ALLOC - 1;
1359         }
1360         return sg_page(sg+n);
1361 }
1362 static inline void i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
1363 {
1364         BUG_ON(obj->pages == NULL);
1365         obj->pages_pin_count++;
1366 }
1367 static inline void i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
1368 {
1369         BUG_ON(obj->pages_pin_count == 0);
1370         obj->pages_pin_count--;
1371 }
1372
1373 int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
1374 int i915_gem_object_sync(struct drm_i915_gem_object *obj,
1375                          struct intel_ring_buffer *to);
1376 void i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
1377                                     struct intel_ring_buffer *ring,
1378                                     u32 seqno);
1379
1380 int i915_gem_dumb_create(struct drm_file *file_priv,
1381                          struct drm_device *dev,
1382                          struct drm_mode_create_dumb *args);
1383 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
1384                       uint32_t handle, uint64_t *offset);
1385 int i915_gem_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
1386                           uint32_t handle);
1387 /**
1388  * Returns true if seq1 is later than seq2.
1389  */
1390 static inline bool
1391 i915_seqno_passed(uint32_t seq1, uint32_t seq2)
1392 {
1393         return (int32_t)(seq1 - seq2) >= 0;
1394 }
1395
1396 u32 i915_gem_next_request_seqno(struct intel_ring_buffer *ring);
1397
1398 int __must_check i915_gem_object_get_fence(struct drm_i915_gem_object *obj);
1399 int __must_check i915_gem_object_put_fence(struct drm_i915_gem_object *obj);
1400
1401 static inline bool
1402 i915_gem_object_pin_fence(struct drm_i915_gem_object *obj)
1403 {
1404         if (obj->fence_reg != I915_FENCE_REG_NONE) {
1405                 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1406                 dev_priv->fence_regs[obj->fence_reg].pin_count++;
1407                 return true;
1408         } else
1409                 return false;
1410 }
1411
1412 static inline void
1413 i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj)
1414 {
1415         if (obj->fence_reg != I915_FENCE_REG_NONE) {
1416                 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1417                 dev_priv->fence_regs[obj->fence_reg].pin_count--;
1418         }
1419 }
1420
1421 void i915_gem_retire_requests(struct drm_device *dev);
1422 void i915_gem_retire_requests_ring(struct intel_ring_buffer *ring);
1423 int __must_check i915_gem_check_wedge(struct drm_i915_private *dev_priv,
1424                                       bool interruptible);
1425
1426 void i915_gem_reset(struct drm_device *dev);
1427 void i915_gem_clflush_object(struct drm_i915_gem_object *obj);
1428 int __must_check i915_gem_object_set_domain(struct drm_i915_gem_object *obj,
1429                                             uint32_t read_domains,
1430                                             uint32_t write_domain);
1431 int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj);
1432 int __must_check i915_gem_init(struct drm_device *dev);
1433 int __must_check i915_gem_init_hw(struct drm_device *dev);
1434 void i915_gem_l3_remap(struct drm_device *dev);
1435 void i915_gem_init_swizzling(struct drm_device *dev);
1436 void i915_gem_init_ppgtt(struct drm_device *dev);
1437 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
1438 int __must_check i915_gpu_idle(struct drm_device *dev);
1439 int __must_check i915_gem_idle(struct drm_device *dev);
1440 int i915_add_request(struct intel_ring_buffer *ring,
1441                      struct drm_file *file,
1442                      u32 *seqno);
1443 int __must_check i915_wait_seqno(struct intel_ring_buffer *ring,
1444                                  uint32_t seqno);
1445 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
1446 int __must_check
1447 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
1448                                   bool write);
1449 int __must_check
1450 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
1451 int __must_check
1452 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
1453                                      u32 alignment,
1454                                      struct intel_ring_buffer *pipelined);
1455 int i915_gem_attach_phys_object(struct drm_device *dev,
1456                                 struct drm_i915_gem_object *obj,
1457                                 int id,
1458                                 int align);
1459 void i915_gem_detach_phys_object(struct drm_device *dev,
1460                                  struct drm_i915_gem_object *obj);
1461 void i915_gem_free_all_phys_object(struct drm_device *dev);
1462 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
1463
1464 uint32_t
1465 i915_gem_get_unfenced_gtt_alignment(struct drm_device *dev,
1466                                     uint32_t size,
1467                                     int tiling_mode);
1468
1469 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
1470                                     enum i915_cache_level cache_level);
1471
1472 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
1473                                 struct dma_buf *dma_buf);
1474
1475 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
1476                                 struct drm_gem_object *gem_obj, int flags);
1477
1478 /* i915_gem_context.c */
1479 void i915_gem_context_init(struct drm_device *dev);
1480 void i915_gem_context_fini(struct drm_device *dev);
1481 void i915_gem_context_close(struct drm_device *dev, struct drm_file *file);
1482 int i915_switch_context(struct intel_ring_buffer *ring,
1483                         struct drm_file *file, int to_id);
1484 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
1485                                   struct drm_file *file);
1486 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
1487                                    struct drm_file *file);
1488
1489 /* i915_gem_gtt.c */
1490 int __must_check i915_gem_init_aliasing_ppgtt(struct drm_device *dev);
1491 void i915_gem_cleanup_aliasing_ppgtt(struct drm_device *dev);
1492 void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
1493                             struct drm_i915_gem_object *obj,
1494                             enum i915_cache_level cache_level);
1495 void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
1496                               struct drm_i915_gem_object *obj);
1497
1498 void i915_gem_restore_gtt_mappings(struct drm_device *dev);
1499 int __must_check i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj);
1500 void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj,
1501                                 enum i915_cache_level cache_level);
1502 void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj);
1503 void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj);
1504 void i915_gem_init_global_gtt(struct drm_device *dev,
1505                               unsigned long start,
1506                               unsigned long mappable_end,
1507                               unsigned long end);
1508
1509 /* i915_gem_evict.c */
1510 int __must_check i915_gem_evict_something(struct drm_device *dev, int min_size,
1511                                           unsigned alignment,
1512                                           unsigned cache_level,
1513                                           bool mappable,
1514                                           bool nonblock);
1515 int i915_gem_evict_everything(struct drm_device *dev);
1516
1517 /* i915_gem_stolen.c */
1518 int i915_gem_init_stolen(struct drm_device *dev);
1519 void i915_gem_cleanup_stolen(struct drm_device *dev);
1520
1521 /* i915_gem_tiling.c */
1522 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
1523 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj);
1524 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj);
1525
1526 /* i915_gem_debug.c */
1527 void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len,
1528                           const char *where, uint32_t mark);
1529 #if WATCH_LISTS
1530 int i915_verify_lists(struct drm_device *dev);
1531 #else
1532 #define i915_verify_lists(dev) 0
1533 #endif
1534 void i915_gem_object_check_coherency(struct drm_i915_gem_object *obj,
1535                                      int handle);
1536 void i915_gem_dump_object(struct drm_i915_gem_object *obj, int len,
1537                           const char *where, uint32_t mark);
1538
1539 /* i915_debugfs.c */
1540 int i915_debugfs_init(struct drm_minor *minor);
1541 void i915_debugfs_cleanup(struct drm_minor *minor);
1542
1543 /* i915_suspend.c */
1544 extern int i915_save_state(struct drm_device *dev);
1545 extern int i915_restore_state(struct drm_device *dev);
1546
1547 /* i915_suspend.c */
1548 extern int i915_save_state(struct drm_device *dev);
1549 extern int i915_restore_state(struct drm_device *dev);
1550
1551 /* i915_sysfs.c */
1552 void i915_setup_sysfs(struct drm_device *dev_priv);
1553 void i915_teardown_sysfs(struct drm_device *dev_priv);
1554
1555 /* intel_i2c.c */
1556 extern int intel_setup_gmbus(struct drm_device *dev);
1557 extern void intel_teardown_gmbus(struct drm_device *dev);
1558 extern inline bool intel_gmbus_is_port_valid(unsigned port)
1559 {
1560         return (port >= GMBUS_PORT_SSC && port <= GMBUS_PORT_DPD);
1561 }
1562
1563 extern struct i2c_adapter *intel_gmbus_get_adapter(
1564                 struct drm_i915_private *dev_priv, unsigned port);
1565 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
1566 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
1567 extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
1568 {
1569         return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
1570 }
1571 extern void intel_i2c_reset(struct drm_device *dev);
1572
1573 /* intel_opregion.c */
1574 extern int intel_opregion_setup(struct drm_device *dev);
1575 #ifdef CONFIG_ACPI
1576 extern void intel_opregion_init(struct drm_device *dev);
1577 extern void intel_opregion_fini(struct drm_device *dev);
1578 extern void intel_opregion_asle_intr(struct drm_device *dev);
1579 extern void intel_opregion_gse_intr(struct drm_device *dev);
1580 extern void intel_opregion_enable_asle(struct drm_device *dev);
1581 #else
1582 static inline void intel_opregion_init(struct drm_device *dev) { return; }
1583 static inline void intel_opregion_fini(struct drm_device *dev) { return; }
1584 static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
1585 static inline void intel_opregion_gse_intr(struct drm_device *dev) { return; }
1586 static inline void intel_opregion_enable_asle(struct drm_device *dev) { return; }
1587 #endif
1588
1589 /* intel_acpi.c */
1590 #ifdef CONFIG_ACPI
1591 extern void intel_register_dsm_handler(void);
1592 extern void intel_unregister_dsm_handler(void);
1593 #else
1594 static inline void intel_register_dsm_handler(void) { return; }
1595 static inline void intel_unregister_dsm_handler(void) { return; }
1596 #endif /* CONFIG_ACPI */
1597
1598 /* modesetting */
1599 extern void intel_modeset_init_hw(struct drm_device *dev);
1600 extern void intel_modeset_init(struct drm_device *dev);
1601 extern void intel_modeset_gem_init(struct drm_device *dev);
1602 extern void intel_modeset_cleanup(struct drm_device *dev);
1603 extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state);
1604 extern void intel_modeset_setup_hw_state(struct drm_device *dev);
1605 extern bool intel_fbc_enabled(struct drm_device *dev);
1606 extern void intel_disable_fbc(struct drm_device *dev);
1607 extern bool ironlake_set_drps(struct drm_device *dev, u8 val);
1608 extern void ironlake_init_pch_refclk(struct drm_device *dev);
1609 extern void gen6_set_rps(struct drm_device *dev, u8 val);
1610 extern void intel_detect_pch(struct drm_device *dev);
1611 extern int intel_trans_dp_port_sel(struct drm_crtc *crtc);
1612 extern int intel_enable_rc6(const struct drm_device *dev);
1613
1614 extern bool i915_semaphore_is_enabled(struct drm_device *dev);
1615 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
1616                         struct drm_file *file);
1617
1618 /* overlay */
1619 #ifdef CONFIG_DEBUG_FS
1620 extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
1621 extern void intel_overlay_print_error_state(struct seq_file *m, struct intel_overlay_error_state *error);
1622
1623 extern struct intel_display_error_state *intel_display_capture_error_state(struct drm_device *dev);
1624 extern void intel_display_print_error_state(struct seq_file *m,
1625                                             struct drm_device *dev,
1626                                             struct intel_display_error_state *error);
1627 #endif
1628
1629 /* On SNB platform, before reading ring registers forcewake bit
1630  * must be set to prevent GT core from power down and stale values being
1631  * returned.
1632  */
1633 void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv);
1634 void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv);
1635 int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv);
1636
1637 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val);
1638 int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val);
1639
1640 #define __i915_read(x, y) \
1641         u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg);
1642
1643 __i915_read(8, b)
1644 __i915_read(16, w)
1645 __i915_read(32, l)
1646 __i915_read(64, q)
1647 #undef __i915_read
1648
1649 #define __i915_write(x, y) \
1650         void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val);
1651
1652 __i915_write(8, b)
1653 __i915_write(16, w)
1654 __i915_write(32, l)
1655 __i915_write(64, q)
1656 #undef __i915_write
1657
1658 #define I915_READ8(reg)         i915_read8(dev_priv, (reg))
1659 #define I915_WRITE8(reg, val)   i915_write8(dev_priv, (reg), (val))
1660
1661 #define I915_READ16(reg)        i915_read16(dev_priv, (reg))
1662 #define I915_WRITE16(reg, val)  i915_write16(dev_priv, (reg), (val))
1663 #define I915_READ16_NOTRACE(reg)        readw(dev_priv->regs + (reg))
1664 #define I915_WRITE16_NOTRACE(reg, val)  writew(val, dev_priv->regs + (reg))
1665
1666 #define I915_READ(reg)          i915_read32(dev_priv, (reg))
1667 #define I915_WRITE(reg, val)    i915_write32(dev_priv, (reg), (val))
1668 #define I915_READ_NOTRACE(reg)          readl(dev_priv->regs + (reg))
1669 #define I915_WRITE_NOTRACE(reg, val)    writel(val, dev_priv->regs + (reg))
1670
1671 #define I915_WRITE64(reg, val)  i915_write64(dev_priv, (reg), (val))
1672 #define I915_READ64(reg)        i915_read64(dev_priv, (reg))
1673
1674 #define POSTING_READ(reg)       (void)I915_READ_NOTRACE(reg)
1675 #define POSTING_READ16(reg)     (void)I915_READ16_NOTRACE(reg)
1676
1677
1678 #endif