1 /* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
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.
33 #include <uapi/drm/i915_drm.h>
36 #include "intel_bios.h"
37 #include "intel_ringbuffer.h"
38 #include "i915_gem_gtt.h"
39 #include <linux/io-mapping.h>
40 #include <linux/i2c.h>
41 #include <linux/i2c-algo-bit.h>
42 #include <drm/intel-gtt.h>
43 #include <linux/backlight.h>
44 #include <linux/hashtable.h>
45 #include <linux/intel-iommu.h>
46 #include <linux/kref.h>
47 #include <linux/pm_qos.h>
49 /* General customization:
52 #define DRIVER_AUTHOR "Tungsten Graphics, Inc."
54 #define DRIVER_NAME "i915"
55 #define DRIVER_DESC "Intel Graphics"
56 #define DRIVER_DATE "20140620"
64 I915_MAX_PIPES = _PIPE_EDP
66 #define pipe_name(p) ((p) + 'A')
75 #define transcoder_name(t) ((t) + 'A')
82 #define plane_name(p) ((p) + 'A')
84 #define sprite_name(p, s) ((p) * INTEL_INFO(dev)->num_sprites[(p)] + (s) + 'A')
94 #define port_name(p) ((p) + 'A')
96 #define I915_NUM_PHYS_VLV 2
108 enum intel_display_power_domain {
112 POWER_DOMAIN_PIPE_A_PANEL_FITTER,
113 POWER_DOMAIN_PIPE_B_PANEL_FITTER,
114 POWER_DOMAIN_PIPE_C_PANEL_FITTER,
115 POWER_DOMAIN_TRANSCODER_A,
116 POWER_DOMAIN_TRANSCODER_B,
117 POWER_DOMAIN_TRANSCODER_C,
118 POWER_DOMAIN_TRANSCODER_EDP,
119 POWER_DOMAIN_PORT_DDI_A_2_LANES,
120 POWER_DOMAIN_PORT_DDI_A_4_LANES,
121 POWER_DOMAIN_PORT_DDI_B_2_LANES,
122 POWER_DOMAIN_PORT_DDI_B_4_LANES,
123 POWER_DOMAIN_PORT_DDI_C_2_LANES,
124 POWER_DOMAIN_PORT_DDI_C_4_LANES,
125 POWER_DOMAIN_PORT_DDI_D_2_LANES,
126 POWER_DOMAIN_PORT_DDI_D_4_LANES,
127 POWER_DOMAIN_PORT_DSI,
128 POWER_DOMAIN_PORT_CRT,
129 POWER_DOMAIN_PORT_OTHER,
137 #define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
138 #define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
139 ((pipe) + POWER_DOMAIN_PIPE_A_PANEL_FITTER)
140 #define POWER_DOMAIN_TRANSCODER(tran) \
141 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
142 (tran) + POWER_DOMAIN_TRANSCODER_A)
146 HPD_PORT_A = HPD_NONE, /* PORT_A is internal */
147 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
157 #define I915_GEM_GPU_DOMAINS \
158 (I915_GEM_DOMAIN_RENDER | \
159 I915_GEM_DOMAIN_SAMPLER | \
160 I915_GEM_DOMAIN_COMMAND | \
161 I915_GEM_DOMAIN_INSTRUCTION | \
162 I915_GEM_DOMAIN_VERTEX)
164 #define for_each_pipe(p) for ((p) = 0; (p) < INTEL_INFO(dev)->num_pipes; (p)++)
165 #define for_each_sprite(p, s) for ((s) = 0; (s) < INTEL_INFO(dev)->num_sprites[(p)]; (s)++)
167 #define for_each_crtc(dev, crtc) \
168 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
170 #define for_each_intel_crtc(dev, intel_crtc) \
171 list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, base.head)
173 #define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
174 list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
175 if ((intel_encoder)->base.crtc == (__crtc))
177 #define for_each_connector_on_encoder(dev, __encoder, intel_connector) \
178 list_for_each_entry((intel_connector), &(dev)->mode_config.connector_list, base.head) \
179 if ((intel_connector)->base.encoder == (__encoder))
181 struct drm_i915_private;
182 struct i915_mmu_object;
185 DPLL_ID_PRIVATE = -1, /* non-shared dpll in use */
186 /* real shared dpll ids must be >= 0 */
187 DPLL_ID_PCH_PLL_A = 0,
188 DPLL_ID_PCH_PLL_B = 1,
192 #define I915_NUM_PLLS 2
194 struct intel_dpll_hw_state {
201 struct intel_shared_dpll {
202 int refcount; /* count of number of CRTCs sharing this PLL */
203 int active; /* count of number of active CRTCs (i.e. DPMS on) */
204 bool on; /* is the PLL actually active? Disabled during modeset */
206 /* should match the index in the dev_priv->shared_dplls array */
207 enum intel_dpll_id id;
208 struct intel_dpll_hw_state hw_state;
209 void (*mode_set)(struct drm_i915_private *dev_priv,
210 struct intel_shared_dpll *pll);
211 void (*enable)(struct drm_i915_private *dev_priv,
212 struct intel_shared_dpll *pll);
213 void (*disable)(struct drm_i915_private *dev_priv,
214 struct intel_shared_dpll *pll);
215 bool (*get_hw_state)(struct drm_i915_private *dev_priv,
216 struct intel_shared_dpll *pll,
217 struct intel_dpll_hw_state *hw_state);
220 /* Used by dp and fdi links */
221 struct intel_link_m_n {
229 void intel_link_compute_m_n(int bpp, int nlanes,
230 int pixel_clock, int link_clock,
231 struct intel_link_m_n *m_n);
233 struct intel_ddi_plls {
238 /* Interface history:
241 * 1.2: Add Power Management
242 * 1.3: Add vblank support
243 * 1.4: Fix cmdbuffer path, add heap destroy
244 * 1.5: Add vblank pipe configuration
245 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
246 * - Support vertical blank on secondary display pipe
248 #define DRIVER_MAJOR 1
249 #define DRIVER_MINOR 6
250 #define DRIVER_PATCHLEVEL 0
252 #define WATCH_LISTS 0
255 struct opregion_header;
256 struct opregion_acpi;
257 struct opregion_swsci;
258 struct opregion_asle;
260 struct intel_opregion {
261 struct opregion_header __iomem *header;
262 struct opregion_acpi __iomem *acpi;
263 struct opregion_swsci __iomem *swsci;
264 u32 swsci_gbda_sub_functions;
265 u32 swsci_sbcb_sub_functions;
266 struct opregion_asle __iomem *asle;
268 u32 __iomem *lid_state;
269 struct work_struct asle_work;
271 #define OPREGION_SIZE (8*1024)
273 struct intel_overlay;
274 struct intel_overlay_error_state;
276 struct drm_i915_master_private {
277 drm_local_map_t *sarea;
278 struct _drm_i915_sarea *sarea_priv;
280 #define I915_FENCE_REG_NONE -1
281 #define I915_MAX_NUM_FENCES 32
282 /* 32 fences + sign bit for FENCE_REG_NONE */
283 #define I915_MAX_NUM_FENCE_BITS 6
285 struct drm_i915_fence_reg {
286 struct list_head lru_list;
287 struct drm_i915_gem_object *obj;
291 struct sdvo_device_mapping {
300 struct intel_display_error_state;
302 struct drm_i915_error_state {
310 /* Generic register state */
317 u32 error; /* gen6+ */
318 u32 err_int; /* gen7 */
324 u32 extra_instdone[I915_NUM_INSTDONE_REG];
325 u64 fence[I915_MAX_NUM_FENCES];
326 struct intel_overlay_error_state *overlay;
327 struct intel_display_error_state *display;
328 struct drm_i915_error_object *semaphore_obj;
330 struct drm_i915_error_ring {
332 /* Software tracked state */
335 enum intel_ring_hangcheck_action hangcheck_action;
338 /* our own tracking of ring head and tail */
342 u32 semaphore_seqno[I915_NUM_RINGS - 1];
360 u32 rc_psmi; /* sleep state */
361 u32 semaphore_mboxes[I915_NUM_RINGS - 1];
363 struct drm_i915_error_object {
367 } *ringbuffer, *batchbuffer, *wa_batchbuffer, *ctx, *hws_page;
369 struct drm_i915_error_request {
384 char comm[TASK_COMM_LEN];
385 } ring[I915_NUM_RINGS];
386 struct drm_i915_error_buffer {
393 s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
401 } **active_bo, **pinned_bo;
403 u32 *active_bo_count, *pinned_bo_count;
406 struct intel_connector;
407 struct intel_crtc_config;
408 struct intel_plane_config;
413 struct drm_i915_display_funcs {
414 bool (*fbc_enabled)(struct drm_device *dev);
415 void (*enable_fbc)(struct drm_crtc *crtc);
416 void (*disable_fbc)(struct drm_device *dev);
417 int (*get_display_clock_speed)(struct drm_device *dev);
418 int (*get_fifo_size)(struct drm_device *dev, int plane);
420 * find_dpll() - Find the best values for the PLL
421 * @limit: limits for the PLL
422 * @crtc: current CRTC
423 * @target: target frequency in kHz
424 * @refclk: reference clock frequency in kHz
425 * @match_clock: if provided, @best_clock P divider must
426 * match the P divider from @match_clock
427 * used for LVDS downclocking
428 * @best_clock: best PLL values found
430 * Returns true on success, false on failure.
432 bool (*find_dpll)(const struct intel_limit *limit,
433 struct drm_crtc *crtc,
434 int target, int refclk,
435 struct dpll *match_clock,
436 struct dpll *best_clock);
437 void (*update_wm)(struct drm_crtc *crtc);
438 void (*update_sprite_wm)(struct drm_plane *plane,
439 struct drm_crtc *crtc,
440 uint32_t sprite_width, int pixel_size,
441 bool enable, bool scaled);
442 void (*modeset_global_resources)(struct drm_device *dev);
443 /* Returns the active state of the crtc, and if the crtc is active,
444 * fills out the pipe-config with the hw state. */
445 bool (*get_pipe_config)(struct intel_crtc *,
446 struct intel_crtc_config *);
447 void (*get_plane_config)(struct intel_crtc *,
448 struct intel_plane_config *);
449 int (*crtc_mode_set)(struct drm_crtc *crtc,
451 struct drm_framebuffer *old_fb);
452 void (*crtc_enable)(struct drm_crtc *crtc);
453 void (*crtc_disable)(struct drm_crtc *crtc);
454 void (*off)(struct drm_crtc *crtc);
455 void (*write_eld)(struct drm_connector *connector,
456 struct drm_crtc *crtc,
457 struct drm_display_mode *mode);
458 void (*fdi_link_train)(struct drm_crtc *crtc);
459 void (*init_clock_gating)(struct drm_device *dev);
460 int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
461 struct drm_framebuffer *fb,
462 struct drm_i915_gem_object *obj,
463 struct intel_engine_cs *ring,
465 void (*update_primary_plane)(struct drm_crtc *crtc,
466 struct drm_framebuffer *fb,
468 void (*hpd_irq_setup)(struct drm_device *dev);
469 /* clock updates for mode set */
471 /* render clock increase/decrease */
472 /* display clock increase/decrease */
473 /* pll clock increase/decrease */
475 int (*setup_backlight)(struct intel_connector *connector);
476 uint32_t (*get_backlight)(struct intel_connector *connector);
477 void (*set_backlight)(struct intel_connector *connector,
479 void (*disable_backlight)(struct intel_connector *connector);
480 void (*enable_backlight)(struct intel_connector *connector);
483 struct intel_uncore_funcs {
484 void (*force_wake_get)(struct drm_i915_private *dev_priv,
486 void (*force_wake_put)(struct drm_i915_private *dev_priv,
489 uint8_t (*mmio_readb)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
490 uint16_t (*mmio_readw)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
491 uint32_t (*mmio_readl)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
492 uint64_t (*mmio_readq)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
494 void (*mmio_writeb)(struct drm_i915_private *dev_priv, off_t offset,
495 uint8_t val, bool trace);
496 void (*mmio_writew)(struct drm_i915_private *dev_priv, off_t offset,
497 uint16_t val, bool trace);
498 void (*mmio_writel)(struct drm_i915_private *dev_priv, off_t offset,
499 uint32_t val, bool trace);
500 void (*mmio_writeq)(struct drm_i915_private *dev_priv, off_t offset,
501 uint64_t val, bool trace);
504 struct intel_uncore {
505 spinlock_t lock; /** lock is also taken in irq contexts. */
507 struct intel_uncore_funcs funcs;
510 unsigned forcewake_count;
512 unsigned fw_rendercount;
513 unsigned fw_mediacount;
515 struct timer_list force_wake_timer;
518 #define DEV_INFO_FOR_EACH_FLAG(func, sep) \
519 func(is_mobile) sep \
522 func(is_i945gm) sep \
524 func(need_gfx_hws) sep \
526 func(is_pineview) sep \
527 func(is_broadwater) sep \
528 func(is_crestline) sep \
529 func(is_ivybridge) sep \
530 func(is_valleyview) sep \
531 func(is_haswell) sep \
532 func(is_preliminary) sep \
534 func(has_pipe_cxsr) sep \
535 func(has_hotplug) sep \
536 func(cursor_needs_physical) sep \
537 func(has_overlay) sep \
538 func(overlay_needs_physical) sep \
539 func(supports_tv) sep \
544 #define DEFINE_FLAG(name) u8 name:1
545 #define SEP_SEMICOLON ;
547 struct intel_device_info {
548 u32 display_mmio_offset;
550 u8 num_sprites[I915_MAX_PIPES];
552 u8 ring_mask; /* Rings supported by the HW */
553 DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG, SEP_SEMICOLON);
554 /* Register offsets for the various display pipes and transcoders */
555 int pipe_offsets[I915_MAX_TRANSCODERS];
556 int trans_offsets[I915_MAX_TRANSCODERS];
557 int palette_offsets[I915_MAX_PIPES];
558 int cursor_offsets[I915_MAX_PIPES];
564 enum i915_cache_level {
566 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
567 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
568 caches, eg sampler/render caches, and the
569 large Last-Level-Cache. LLC is coherent with
570 the CPU, but L3 is only visible to the GPU. */
571 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
574 struct i915_ctx_hang_stats {
575 /* This context had batch pending when hang was declared */
576 unsigned batch_pending;
578 /* This context had batch active when hang was declared */
579 unsigned batch_active;
581 /* Time when this context was last blamed for a GPU reset */
582 unsigned long guilty_ts;
584 /* This context is banned to submit more work */
588 /* This must match up with the value previously used for execbuf2.rsvd1. */
589 #define DEFAULT_CONTEXT_HANDLE 0
591 * struct intel_context - as the name implies, represents a context.
592 * @ref: reference count.
593 * @user_handle: userspace tracking identity for this context.
594 * @remap_slice: l3 row remapping information.
595 * @file_priv: filp associated with this context (NULL for global default
597 * @hang_stats: information about the role of this context in possible GPU
599 * @vm: virtual memory space used by this context.
600 * @legacy_hw_ctx: render context backing object and whether it is correctly
601 * initialized (legacy ring submission mechanism only).
602 * @link: link in the global list of contexts.
604 * Contexts are memory images used by the hardware to store copies of their
607 struct intel_context {
611 struct drm_i915_file_private *file_priv;
612 struct i915_ctx_hang_stats hang_stats;
613 struct i915_address_space *vm;
616 struct drm_i915_gem_object *rcs_state;
620 struct list_head link;
630 struct drm_mm_node compressed_fb;
631 struct drm_mm_node *compressed_llb;
633 struct intel_fbc_work {
634 struct delayed_work work;
635 struct drm_crtc *crtc;
636 struct drm_framebuffer *fb;
640 FBC_OK, /* FBC is enabled */
641 FBC_UNSUPPORTED, /* FBC is not supported by this chipset */
642 FBC_NO_OUTPUT, /* no outputs enabled to compress */
643 FBC_STOLEN_TOO_SMALL, /* not enough space for buffers */
644 FBC_UNSUPPORTED_MODE, /* interlace or doublescanned mode */
645 FBC_MODE_TOO_LARGE, /* mode too large for compression */
646 FBC_BAD_PLANE, /* fbc not supported on plane */
647 FBC_NOT_TILED, /* buffer not tiled */
648 FBC_MULTIPLE_PIPES, /* more than one pipe active */
650 FBC_CHIP_DEFAULT, /* disabled by default on this chip */
655 struct intel_connector *connector;
664 struct delayed_work work;
668 PCH_NONE = 0, /* No PCH present */
669 PCH_IBX, /* Ibexpeak PCH */
670 PCH_CPT, /* Cougarpoint PCH */
671 PCH_LPT, /* Lynxpoint PCH */
675 enum intel_sbi_destination {
680 #define QUIRK_PIPEA_FORCE (1<<0)
681 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
682 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
685 struct intel_fbc_work;
688 struct i2c_adapter adapter;
692 struct i2c_algo_bit_data bit_algo;
693 struct drm_i915_private *dev_priv;
696 struct i915_suspend_saved_registers {
717 u32 saveTRANS_HTOTAL_A;
718 u32 saveTRANS_HBLANK_A;
719 u32 saveTRANS_HSYNC_A;
720 u32 saveTRANS_VTOTAL_A;
721 u32 saveTRANS_VBLANK_A;
722 u32 saveTRANS_VSYNC_A;
730 u32 savePFIT_PGM_RATIOS;
731 u32 saveBLC_HIST_CTL;
733 u32 saveBLC_PWM_CTL2;
734 u32 saveBLC_HIST_CTL_B;
735 u32 saveBLC_CPU_PWM_CTL;
736 u32 saveBLC_CPU_PWM_CTL2;
749 u32 saveTRANS_HTOTAL_B;
750 u32 saveTRANS_HBLANK_B;
751 u32 saveTRANS_HSYNC_B;
752 u32 saveTRANS_VTOTAL_B;
753 u32 saveTRANS_VBLANK_B;
754 u32 saveTRANS_VSYNC_B;
768 u32 savePP_ON_DELAYS;
769 u32 savePP_OFF_DELAYS;
777 u32 savePFIT_CONTROL;
778 u32 save_palette_a[256];
779 u32 save_palette_b[256];
790 u32 saveCACHE_MODE_0;
791 u32 saveMI_ARB_STATE;
802 uint64_t saveFENCE[I915_MAX_NUM_FENCES];
813 u32 savePIPEA_GMCH_DATA_M;
814 u32 savePIPEB_GMCH_DATA_M;
815 u32 savePIPEA_GMCH_DATA_N;
816 u32 savePIPEB_GMCH_DATA_N;
817 u32 savePIPEA_DP_LINK_M;
818 u32 savePIPEB_DP_LINK_M;
819 u32 savePIPEA_DP_LINK_N;
820 u32 savePIPEB_DP_LINK_N;
831 u32 savePCH_DREF_CONTROL;
832 u32 saveDISP_ARB_CTL;
833 u32 savePIPEA_DATA_M1;
834 u32 savePIPEA_DATA_N1;
835 u32 savePIPEA_LINK_M1;
836 u32 savePIPEA_LINK_N1;
837 u32 savePIPEB_DATA_M1;
838 u32 savePIPEB_DATA_N1;
839 u32 savePIPEB_LINK_M1;
840 u32 savePIPEB_LINK_N1;
841 u32 saveMCHBAR_RENDER_STANDBY;
842 u32 savePCH_PORT_HOTPLUG;
845 struct vlv_s0ix_state {
852 u32 lra_limits[GEN7_LRA_LIMITS_REG_NUM];
853 u32 media_max_req_count;
854 u32 gfx_max_req_count;
886 /* Display 1 CZ domain */
891 u32 gt_scratch[GEN7_GT_SCRATCH_REG_NUM];
893 /* GT SA CZ domain */
900 /* Display 2 CZ domain */
906 struct intel_rps_ei_calc {
912 struct intel_gen6_power_mgmt {
913 /* work and pm_iir are protected by dev_priv->irq_lock */
914 struct work_struct work;
917 /* Frequencies are stored in potentially platform dependent multiples.
918 * In other words, *_freq needs to be multiplied by X to be interesting.
919 * Soft limits are those which are used for the dynamic reclocking done
920 * by the driver (raise frequencies under heavy loads, and lower for
921 * lighter loads). Hard limits are those imposed by the hardware.
923 * A distinction is made for overclocking, which is never enabled by
924 * default, and is considered to be above the hard limit if it's
927 u8 cur_freq; /* Current frequency (cached, may not == HW) */
928 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
929 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
930 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
931 u8 min_freq; /* AKA RPn. Minimum frequency */
932 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
933 u8 rp1_freq; /* "less than" RP0 power/freqency */
934 u8 rp0_freq; /* Non-overclocked max frequency. */
936 u32 ei_interrupt_count;
939 enum { LOW_POWER, BETWEEN, HIGH_POWER } power;
942 struct delayed_work delayed_resume_work;
945 * Protects RPS/RC6 register access and PCU communication.
946 * Must be taken after struct_mutex if nested.
948 struct mutex hw_lock;
951 /* defined intel_pm.c */
952 extern spinlock_t mchdev_lock;
954 struct intel_ilk_power_mgmt {
962 unsigned long last_time1;
963 unsigned long chipset_power;
965 struct timespec last_time2;
966 unsigned long gfx_power;
972 struct drm_i915_gem_object *pwrctx;
973 struct drm_i915_gem_object *renderctx;
976 struct drm_i915_private;
977 struct i915_power_well;
979 struct i915_power_well_ops {
981 * Synchronize the well's hw state to match the current sw state, for
982 * example enable/disable it based on the current refcount. Called
983 * during driver init and resume time, possibly after first calling
984 * the enable/disable handlers.
986 void (*sync_hw)(struct drm_i915_private *dev_priv,
987 struct i915_power_well *power_well);
989 * Enable the well and resources that depend on it (for example
990 * interrupts located on the well). Called after the 0->1 refcount
993 void (*enable)(struct drm_i915_private *dev_priv,
994 struct i915_power_well *power_well);
996 * Disable the well and resources that depend on it. Called after
997 * the 1->0 refcount transition.
999 void (*disable)(struct drm_i915_private *dev_priv,
1000 struct i915_power_well *power_well);
1001 /* Returns the hw enabled state. */
1002 bool (*is_enabled)(struct drm_i915_private *dev_priv,
1003 struct i915_power_well *power_well);
1006 /* Power well structure for haswell */
1007 struct i915_power_well {
1010 /* power well enable/disable usage count */
1012 /* cached hw enabled state */
1014 unsigned long domains;
1016 const struct i915_power_well_ops *ops;
1019 struct i915_power_domains {
1021 * Power wells needed for initialization at driver init and suspend
1022 * time are on. They are kept on until after the first modeset.
1026 int power_well_count;
1029 int domain_use_count[POWER_DOMAIN_NUM];
1030 struct i915_power_well *power_wells;
1033 struct i915_dri1_state {
1034 unsigned allow_batchbuffer : 1;
1035 u32 __iomem *gfx_hws_cpu_addr;
1046 struct i915_ums_state {
1048 * Flag if the X Server, and thus DRM, is not currently in
1049 * control of the device.
1051 * This is set between LeaveVT and EnterVT. It needs to be
1052 * replaced with a semaphore. It also needs to be
1053 * transitioned away from for kernel modesetting.
1058 #define MAX_L3_SLICES 2
1059 struct intel_l3_parity {
1060 u32 *remap_info[MAX_L3_SLICES];
1061 struct work_struct error_work;
1065 struct i915_gem_mm {
1066 /** Memory allocator for GTT stolen memory */
1067 struct drm_mm stolen;
1068 /** List of all objects in gtt_space. Used to restore gtt
1069 * mappings on resume */
1070 struct list_head bound_list;
1072 * List of objects which are not bound to the GTT (thus
1073 * are idle and not used by the GPU) but still have
1074 * (presumably uncached) pages still attached.
1076 struct list_head unbound_list;
1078 /** Usable portion of the GTT for GEM */
1079 unsigned long stolen_base; /* limited to low memory (32-bit) */
1081 /** PPGTT used for aliasing the PPGTT with the GTT */
1082 struct i915_hw_ppgtt *aliasing_ppgtt;
1084 struct notifier_block oom_notifier;
1085 struct shrinker shrinker;
1086 bool shrinker_no_lock_stealing;
1088 /** LRU list of objects with fence regs on them. */
1089 struct list_head fence_list;
1092 * We leave the user IRQ off as much as possible,
1093 * but this means that requests will finish and never
1094 * be retired once the system goes idle. Set a timer to
1095 * fire periodically while the ring is running. When it
1096 * fires, go retire requests.
1098 struct delayed_work retire_work;
1101 * When we detect an idle GPU, we want to turn on
1102 * powersaving features. So once we see that there
1103 * are no more requests outstanding and no more
1104 * arrive within a small period of time, we fire
1105 * off the idle_work.
1107 struct delayed_work idle_work;
1110 * Are we in a non-interruptible section of code like
1116 * Is the GPU currently considered idle, or busy executing userspace
1117 * requests? Whilst idle, we attempt to power down the hardware and
1118 * display clocks. In order to reduce the effect on performance, there
1119 * is a slight delay before we do so.
1123 /* the indicator for dispatch video commands on two BSD rings */
1124 int bsd_ring_dispatch_index;
1126 /** Bit 6 swizzling required for X tiling */
1127 uint32_t bit_6_swizzle_x;
1128 /** Bit 6 swizzling required for Y tiling */
1129 uint32_t bit_6_swizzle_y;
1131 /* accounting, useful for userland debugging */
1132 spinlock_t object_stat_lock;
1133 size_t object_memory;
1137 struct drm_i915_error_state_buf {
1146 struct i915_error_state_file_priv {
1147 struct drm_device *dev;
1148 struct drm_i915_error_state *error;
1151 struct i915_gpu_error {
1152 /* For hangcheck timer */
1153 #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */
1154 #define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)
1155 /* Hang gpu twice in this window and your context gets banned */
1156 #define DRM_I915_CTX_BAN_PERIOD DIV_ROUND_UP(8*DRM_I915_HANGCHECK_PERIOD, 1000)
1158 struct timer_list hangcheck_timer;
1160 /* For reset and error_state handling. */
1162 /* Protected by the above dev->gpu_error.lock. */
1163 struct drm_i915_error_state *first_error;
1164 struct work_struct work;
1167 unsigned long missed_irq_rings;
1170 * State variable controlling the reset flow and count
1172 * This is a counter which gets incremented when reset is triggered,
1173 * and again when reset has been handled. So odd values (lowest bit set)
1174 * means that reset is in progress and even values that
1175 * (reset_counter >> 1):th reset was successfully completed.
1177 * If reset is not completed succesfully, the I915_WEDGE bit is
1178 * set meaning that hardware is terminally sour and there is no
1179 * recovery. All waiters on the reset_queue will be woken when
1182 * This counter is used by the wait_seqno code to notice that reset
1183 * event happened and it needs to restart the entire ioctl (since most
1184 * likely the seqno it waited for won't ever signal anytime soon).
1186 * This is important for lock-free wait paths, where no contended lock
1187 * naturally enforces the correct ordering between the bail-out of the
1188 * waiter and the gpu reset work code.
1190 atomic_t reset_counter;
1192 #define I915_RESET_IN_PROGRESS_FLAG 1
1193 #define I915_WEDGED (1 << 31)
1196 * Waitqueue to signal when the reset has completed. Used by clients
1197 * that wait for dev_priv->mm.wedged to settle.
1199 wait_queue_head_t reset_queue;
1201 /* Userspace knobs for gpu hang simulation;
1202 * combines both a ring mask, and extra flags
1205 #define I915_STOP_RING_ALLOW_BAN (1 << 31)
1206 #define I915_STOP_RING_ALLOW_WARN (1 << 30)
1208 /* For missed irq/seqno simulation. */
1209 unsigned int test_irq_rings;
1212 enum modeset_restore {
1213 MODESET_ON_LID_OPEN,
1218 struct ddi_vbt_port_info {
1219 uint8_t hdmi_level_shift;
1221 uint8_t supports_dvi:1;
1222 uint8_t supports_hdmi:1;
1223 uint8_t supports_dp:1;
1226 enum drrs_support_type {
1227 DRRS_NOT_SUPPORTED = 0,
1228 STATIC_DRRS_SUPPORT = 1,
1229 SEAMLESS_DRRS_SUPPORT = 2
1232 struct intel_vbt_data {
1233 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
1234 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
1237 unsigned int int_tv_support:1;
1238 unsigned int lvds_dither:1;
1239 unsigned int lvds_vbt:1;
1240 unsigned int int_crt_support:1;
1241 unsigned int lvds_use_ssc:1;
1242 unsigned int display_clock_mode:1;
1243 unsigned int fdi_rx_polarity_inverted:1;
1244 unsigned int has_mipi:1;
1246 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
1248 enum drrs_support_type drrs_type;
1253 int edp_preemphasis;
1255 bool edp_initialized;
1258 struct edp_power_seq edp_pps;
1263 bool active_low_pwm;
1270 struct mipi_config *config;
1271 struct mipi_pps_data *pps;
1275 u8 *sequence[MIPI_SEQ_MAX];
1281 union child_device_config *child_dev;
1283 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
1286 enum intel_ddb_partitioning {
1288 INTEL_DDB_PART_5_6, /* IVB+ */
1291 struct intel_wm_level {
1299 struct ilk_wm_values {
1300 uint32_t wm_pipe[3];
1302 uint32_t wm_lp_spr[3];
1303 uint32_t wm_linetime[3];
1305 enum intel_ddb_partitioning partitioning;
1309 * This struct helps tracking the state needed for runtime PM, which puts the
1310 * device in PCI D3 state. Notice that when this happens, nothing on the
1311 * graphics device works, even register access, so we don't get interrupts nor
1314 * Every piece of our code that needs to actually touch the hardware needs to
1315 * either call intel_runtime_pm_get or call intel_display_power_get with the
1316 * appropriate power domain.
1318 * Our driver uses the autosuspend delay feature, which means we'll only really
1319 * suspend if we stay with zero refcount for a certain amount of time. The
1320 * default value is currently very conservative (see intel_init_runtime_pm), but
1321 * it can be changed with the standard runtime PM files from sysfs.
1323 * The irqs_disabled variable becomes true exactly after we disable the IRQs and
1324 * goes back to false exactly before we reenable the IRQs. We use this variable
1325 * to check if someone is trying to enable/disable IRQs while they're supposed
1326 * to be disabled. This shouldn't happen and we'll print some error messages in
1329 * For more, read the Documentation/power/runtime_pm.txt.
1331 struct i915_runtime_pm {
1336 enum intel_pipe_crc_source {
1337 INTEL_PIPE_CRC_SOURCE_NONE,
1338 INTEL_PIPE_CRC_SOURCE_PLANE1,
1339 INTEL_PIPE_CRC_SOURCE_PLANE2,
1340 INTEL_PIPE_CRC_SOURCE_PF,
1341 INTEL_PIPE_CRC_SOURCE_PIPE,
1342 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
1343 INTEL_PIPE_CRC_SOURCE_TV,
1344 INTEL_PIPE_CRC_SOURCE_DP_B,
1345 INTEL_PIPE_CRC_SOURCE_DP_C,
1346 INTEL_PIPE_CRC_SOURCE_DP_D,
1347 INTEL_PIPE_CRC_SOURCE_AUTO,
1348 INTEL_PIPE_CRC_SOURCE_MAX,
1351 struct intel_pipe_crc_entry {
1356 #define INTEL_PIPE_CRC_ENTRIES_NR 128
1357 struct intel_pipe_crc {
1359 bool opened; /* exclusive access to the result file */
1360 struct intel_pipe_crc_entry *entries;
1361 enum intel_pipe_crc_source source;
1363 wait_queue_head_t wq;
1366 struct i915_frontbuffer_tracking {
1370 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
1377 struct drm_i915_private {
1378 struct drm_device *dev;
1379 struct kmem_cache *slab;
1381 const struct intel_device_info info;
1383 int relative_constants_mode;
1387 struct intel_uncore uncore;
1389 struct intel_gmbus gmbus[GMBUS_NUM_PORTS];
1392 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1393 * controller on different i2c buses. */
1394 struct mutex gmbus_mutex;
1397 * Base address of the gmbus and gpio block.
1399 uint32_t gpio_mmio_base;
1401 /* MMIO base address for MIPI regs */
1402 uint32_t mipi_mmio_base;
1404 wait_queue_head_t gmbus_wait_queue;
1406 struct pci_dev *bridge_dev;
1407 struct intel_engine_cs ring[I915_NUM_RINGS];
1408 struct drm_i915_gem_object *semaphore_obj;
1409 uint32_t last_seqno, next_seqno;
1411 drm_dma_handle_t *status_page_dmah;
1412 struct resource mch_res;
1414 /* protects the irq masks */
1415 spinlock_t irq_lock;
1417 /* protects the mmio flip data */
1418 spinlock_t mmio_flip_lock;
1420 bool display_irqs_enabled;
1422 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1423 struct pm_qos_request pm_qos;
1425 /* DPIO indirect register protection */
1426 struct mutex dpio_lock;
1428 /** Cached value of IMR to avoid reads in updating the bitfield */
1431 u32 de_irq_mask[I915_MAX_PIPES];
1436 u32 pipestat_irq_mask[I915_MAX_PIPES];
1438 struct work_struct hotplug_work;
1439 bool enable_hotplug_processing;
1441 unsigned long hpd_last_jiffies;
1446 HPD_MARK_DISABLED = 2
1448 } hpd_stats[HPD_NUM_PINS];
1450 struct timer_list hotplug_reenable_timer;
1452 struct i915_fbc fbc;
1453 struct i915_drrs drrs;
1454 struct intel_opregion opregion;
1455 struct intel_vbt_data vbt;
1458 struct intel_overlay *overlay;
1460 /* backlight registers and fields in struct intel_panel */
1461 spinlock_t backlight_lock;
1464 bool no_aux_handshake;
1466 struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
1467 int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
1468 int num_fence_regs; /* 8 on pre-965, 16 otherwise */
1470 unsigned int fsb_freq, mem_freq, is_ddr3;
1471 unsigned int vlv_cdclk_freq;
1474 * wq - Driver workqueue for GEM.
1476 * NOTE: Work items scheduled here are not allowed to grab any modeset
1477 * locks, for otherwise the flushing done in the pageflip code will
1478 * result in deadlocks.
1480 struct workqueue_struct *wq;
1482 /* Display functions */
1483 struct drm_i915_display_funcs display;
1485 /* PCH chipset type */
1486 enum intel_pch pch_type;
1487 unsigned short pch_id;
1489 unsigned long quirks;
1491 enum modeset_restore modeset_restore;
1492 struct mutex modeset_restore_lock;
1494 struct list_head vm_list; /* Global list of all address spaces */
1495 struct i915_gtt gtt; /* VM representing the global address space */
1497 struct i915_gem_mm mm;
1498 #if defined(CONFIG_MMU_NOTIFIER)
1499 DECLARE_HASHTABLE(mmu_notifiers, 7);
1502 /* Kernel Modesetting */
1504 struct sdvo_device_mapping sdvo_mappings[2];
1506 struct drm_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1507 struct drm_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1508 wait_queue_head_t pending_flip_queue;
1510 #ifdef CONFIG_DEBUG_FS
1511 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1514 int num_shared_dpll;
1515 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1516 struct intel_ddi_plls ddi_plls;
1517 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1519 /* Reclocking support */
1520 bool render_reclock_avail;
1521 bool lvds_downclock_avail;
1522 /* indicates the reduced downclock for LVDS*/
1525 struct i915_frontbuffer_tracking fb_tracking;
1529 bool mchbar_need_disable;
1531 struct intel_l3_parity l3_parity;
1533 /* Cannot be determined by PCIID. You must always read a register. */
1536 /* gen6+ rps state */
1537 struct intel_gen6_power_mgmt rps;
1539 /* rps wa up ei calculation */
1540 struct intel_rps_ei_calc rps_up_ei;
1542 /* rps wa down ei calculation */
1543 struct intel_rps_ei_calc rps_down_ei;
1546 /* ilk-only ips/rps state. Everything in here is protected by the global
1547 * mchdev_lock in intel_pm.c */
1548 struct intel_ilk_power_mgmt ips;
1550 struct i915_power_domains power_domains;
1552 struct i915_psr psr;
1554 struct i915_gpu_error gpu_error;
1556 struct drm_i915_gem_object *vlv_pctx;
1558 #ifdef CONFIG_DRM_I915_FBDEV
1559 /* list of fbdev register on this device */
1560 struct intel_fbdev *fbdev;
1564 * The console may be contended at resume, but we don't
1565 * want it to block on it.
1567 struct work_struct console_resume_work;
1569 struct drm_property *broadcast_rgb_property;
1570 struct drm_property *force_audio_property;
1572 uint32_t hw_context_size;
1573 struct list_head context_list;
1578 struct i915_suspend_saved_registers regfile;
1579 struct vlv_s0ix_state vlv_s0ix_state;
1583 * Raw watermark latency values:
1584 * in 0.1us units for WM0,
1585 * in 0.5us units for WM1+.
1588 uint16_t pri_latency[5];
1590 uint16_t spr_latency[5];
1592 uint16_t cur_latency[5];
1594 /* current hardware state */
1595 struct ilk_wm_values hw;
1598 struct i915_runtime_pm pm;
1600 struct intel_digital_port *hpd_irq_port[I915_MAX_PORTS];
1601 u32 long_hpd_port_mask;
1602 u32 short_hpd_port_mask;
1603 struct work_struct dig_port_work;
1605 /* Old dri1 support infrastructure, beware the dragons ya fools entering
1607 struct i915_dri1_state dri1;
1608 /* Old ums support infrastructure, same warning applies. */
1609 struct i915_ums_state ums;
1612 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
1613 * will be rejected. Instead look for a better place.
1617 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
1619 return dev->dev_private;
1622 /* Iterate over initialised rings */
1623 #define for_each_ring(ring__, dev_priv__, i__) \
1624 for ((i__) = 0; (i__) < I915_NUM_RINGS; (i__)++) \
1625 if (((ring__) = &(dev_priv__)->ring[(i__)]), intel_ring_initialized((ring__)))
1627 enum hdmi_force_audio {
1628 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
1629 HDMI_AUDIO_OFF, /* force turn off HDMI audio */
1630 HDMI_AUDIO_AUTO, /* trust EDID */
1631 HDMI_AUDIO_ON, /* force turn on HDMI audio */
1634 #define I915_GTT_OFFSET_NONE ((u32)-1)
1636 struct drm_i915_gem_object_ops {
1637 /* Interface between the GEM object and its backing storage.
1638 * get_pages() is called once prior to the use of the associated set
1639 * of pages before to binding them into the GTT, and put_pages() is
1640 * called after we no longer need them. As we expect there to be
1641 * associated cost with migrating pages between the backing storage
1642 * and making them available for the GPU (e.g. clflush), we may hold
1643 * onto the pages after they are no longer referenced by the GPU
1644 * in case they may be used again shortly (for example migrating the
1645 * pages to a different memory domain within the GTT). put_pages()
1646 * will therefore most likely be called when the object itself is
1647 * being released or under memory pressure (where we attempt to
1648 * reap pages for the shrinker).
1650 int (*get_pages)(struct drm_i915_gem_object *);
1651 void (*put_pages)(struct drm_i915_gem_object *);
1652 int (*dmabuf_export)(struct drm_i915_gem_object *);
1653 void (*release)(struct drm_i915_gem_object *);
1657 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
1658 * considered to be the frontbuffer for the given plane interface-vise. This
1659 * doesn't mean that the hw necessarily already scans it out, but that any
1660 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
1662 * We have one bit per pipe and per scanout plane type.
1664 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 4
1665 #define INTEL_FRONTBUFFER_BITS \
1666 (INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES)
1667 #define INTEL_FRONTBUFFER_PRIMARY(pipe) \
1668 (1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
1669 #define INTEL_FRONTBUFFER_CURSOR(pipe) \
1670 (1 << (1 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
1671 #define INTEL_FRONTBUFFER_SPRITE(pipe) \
1672 (1 << (2 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
1673 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
1674 (1 << (3 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
1675 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
1676 (0xf << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
1678 struct drm_i915_gem_object {
1679 struct drm_gem_object base;
1681 const struct drm_i915_gem_object_ops *ops;
1683 /** List of VMAs backed by this object */
1684 struct list_head vma_list;
1686 /** Stolen memory for this object, instead of being backed by shmem. */
1687 struct drm_mm_node *stolen;
1688 struct list_head global_list;
1690 struct list_head ring_list;
1691 /** Used in execbuf to temporarily hold a ref */
1692 struct list_head obj_exec_link;
1695 * This is set if the object is on the active lists (has pending
1696 * rendering and so a non-zero seqno), and is not set if it i s on
1697 * inactive (ready to be unbound) list.
1699 unsigned int active:1;
1702 * This is set if the object has been written to since last bound
1705 unsigned int dirty:1;
1708 * Fence register bits (if any) for this object. Will be set
1709 * as needed when mapped into the GTT.
1710 * Protected by dev->struct_mutex.
1712 signed int fence_reg:I915_MAX_NUM_FENCE_BITS;
1715 * Advice: are the backing pages purgeable?
1717 unsigned int madv:2;
1720 * Current tiling mode for the object.
1722 unsigned int tiling_mode:2;
1724 * Whether the tiling parameters for the currently associated fence
1725 * register have changed. Note that for the purposes of tracking
1726 * tiling changes we also treat the unfenced register, the register
1727 * slot that the object occupies whilst it executes a fenced
1728 * command (such as BLT on gen2/3), as a "fence".
1730 unsigned int fence_dirty:1;
1733 * Is the object at the current location in the gtt mappable and
1734 * fenceable? Used to avoid costly recalculations.
1736 unsigned int map_and_fenceable:1;
1739 * Whether the current gtt mapping needs to be mappable (and isn't just
1740 * mappable by accident). Track pin and fault separate for a more
1741 * accurate mappable working set.
1743 unsigned int fault_mappable:1;
1744 unsigned int pin_mappable:1;
1745 unsigned int pin_display:1;
1748 * Is the object to be mapped as read-only to the GPU
1749 * Only honoured if hardware has relevant pte bit
1751 unsigned long gt_ro:1;
1754 * Is the GPU currently using a fence to access this buffer,
1756 unsigned int pending_fenced_gpu_access:1;
1757 unsigned int fenced_gpu_access:1;
1759 unsigned int cache_level:3;
1761 unsigned int has_aliasing_ppgtt_mapping:1;
1762 unsigned int has_global_gtt_mapping:1;
1763 unsigned int has_dma_mapping:1;
1765 unsigned int frontbuffer_bits:INTEL_FRONTBUFFER_BITS;
1767 struct sg_table *pages;
1768 int pages_pin_count;
1770 /* prime dma-buf support */
1771 void *dma_buf_vmapping;
1774 struct intel_engine_cs *ring;
1776 /** Breadcrumb of last rendering to the buffer. */
1777 uint32_t last_read_seqno;
1778 uint32_t last_write_seqno;
1779 /** Breadcrumb of last fenced GPU access to the buffer. */
1780 uint32_t last_fenced_seqno;
1782 /** Current tiling stride for the object, if it's tiled. */
1785 /** References from framebuffers, locks out tiling changes. */
1786 unsigned long framebuffer_references;
1788 /** Record of address bit 17 of each page at last unbind. */
1789 unsigned long *bit_17;
1791 /** User space pin count and filp owning the pin */
1792 unsigned long user_pin_count;
1793 struct drm_file *pin_filp;
1795 /** for phy allocated objects */
1796 drm_dma_handle_t *phys_handle;
1799 struct i915_gem_userptr {
1801 unsigned read_only :1;
1802 unsigned workers :4;
1803 #define I915_GEM_USERPTR_MAX_WORKERS 15
1805 struct mm_struct *mm;
1806 struct i915_mmu_object *mn;
1807 struct work_struct *work;
1811 #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
1813 void i915_gem_track_fb(struct drm_i915_gem_object *old,
1814 struct drm_i915_gem_object *new,
1815 unsigned frontbuffer_bits);
1818 * Request queue structure.
1820 * The request queue allows us to note sequence numbers that have been emitted
1821 * and may be associated with active buffers to be retired.
1823 * By keeping this list, we can avoid having to do questionable
1824 * sequence-number comparisons on buffer last_rendering_seqnos, and associate
1825 * an emission time with seqnos for tracking how far ahead of the GPU we are.
1827 struct drm_i915_gem_request {
1828 /** On Which ring this request was generated */
1829 struct intel_engine_cs *ring;
1831 /** GEM sequence number associated with this request. */
1834 /** Position in the ringbuffer of the start of the request */
1837 /** Position in the ringbuffer of the end of the request */
1840 /** Context related to this request */
1841 struct intel_context *ctx;
1843 /** Batch buffer related to this request if any */
1844 struct drm_i915_gem_object *batch_obj;
1846 /** Time at which this request was emitted, in jiffies. */
1847 unsigned long emitted_jiffies;
1849 /** global list entry for this request */
1850 struct list_head list;
1852 struct drm_i915_file_private *file_priv;
1853 /** file_priv list entry for this request */
1854 struct list_head client_list;
1857 struct drm_i915_file_private {
1858 struct drm_i915_private *dev_priv;
1859 struct drm_file *file;
1863 struct list_head request_list;
1864 struct delayed_work idle_work;
1866 struct idr context_idr;
1868 atomic_t rps_wait_boost;
1869 struct intel_engine_cs *bsd_ring;
1873 * A command that requires special handling by the command parser.
1875 struct drm_i915_cmd_descriptor {
1877 * Flags describing how the command parser processes the command.
1879 * CMD_DESC_FIXED: The command has a fixed length if this is set,
1880 * a length mask if not set
1881 * CMD_DESC_SKIP: The command is allowed but does not follow the
1882 * standard length encoding for the opcode range in
1884 * CMD_DESC_REJECT: The command is never allowed
1885 * CMD_DESC_REGISTER: The command should be checked against the
1886 * register whitelist for the appropriate ring
1887 * CMD_DESC_MASTER: The command is allowed if the submitting process
1891 #define CMD_DESC_FIXED (1<<0)
1892 #define CMD_DESC_SKIP (1<<1)
1893 #define CMD_DESC_REJECT (1<<2)
1894 #define CMD_DESC_REGISTER (1<<3)
1895 #define CMD_DESC_BITMASK (1<<4)
1896 #define CMD_DESC_MASTER (1<<5)
1899 * The command's unique identification bits and the bitmask to get them.
1900 * This isn't strictly the opcode field as defined in the spec and may
1901 * also include type, subtype, and/or subop fields.
1909 * The command's length. The command is either fixed length (i.e. does
1910 * not include a length field) or has a length field mask. The flag
1911 * CMD_DESC_FIXED indicates a fixed length. Otherwise, the command has
1912 * a length mask. All command entries in a command table must include
1913 * length information.
1921 * Describes where to find a register address in the command to check
1922 * against the ring's register whitelist. Only valid if flags has the
1923 * CMD_DESC_REGISTER bit set.
1930 #define MAX_CMD_DESC_BITMASKS 3
1932 * Describes command checks where a particular dword is masked and
1933 * compared against an expected value. If the command does not match
1934 * the expected value, the parser rejects it. Only valid if flags has
1935 * the CMD_DESC_BITMASK bit set. Only entries where mask is non-zero
1938 * If the check specifies a non-zero condition_mask then the parser
1939 * only performs the check when the bits specified by condition_mask
1946 u32 condition_offset;
1948 } bits[MAX_CMD_DESC_BITMASKS];
1952 * A table of commands requiring special handling by the command parser.
1954 * Each ring has an array of tables. Each table consists of an array of command
1955 * descriptors, which must be sorted with command opcodes in ascending order.
1957 struct drm_i915_cmd_table {
1958 const struct drm_i915_cmd_descriptor *table;
1962 #define INTEL_INFO(dev) (&to_i915(dev)->info)
1964 #define IS_I830(dev) ((dev)->pdev->device == 0x3577)
1965 #define IS_845G(dev) ((dev)->pdev->device == 0x2562)
1966 #define IS_I85X(dev) (INTEL_INFO(dev)->is_i85x)
1967 #define IS_I865G(dev) ((dev)->pdev->device == 0x2572)
1968 #define IS_I915G(dev) (INTEL_INFO(dev)->is_i915g)
1969 #define IS_I915GM(dev) ((dev)->pdev->device == 0x2592)
1970 #define IS_I945G(dev) ((dev)->pdev->device == 0x2772)
1971 #define IS_I945GM(dev) (INTEL_INFO(dev)->is_i945gm)
1972 #define IS_BROADWATER(dev) (INTEL_INFO(dev)->is_broadwater)
1973 #define IS_CRESTLINE(dev) (INTEL_INFO(dev)->is_crestline)
1974 #define IS_GM45(dev) ((dev)->pdev->device == 0x2A42)
1975 #define IS_G4X(dev) (INTEL_INFO(dev)->is_g4x)
1976 #define IS_PINEVIEW_G(dev) ((dev)->pdev->device == 0xa001)
1977 #define IS_PINEVIEW_M(dev) ((dev)->pdev->device == 0xa011)
1978 #define IS_PINEVIEW(dev) (INTEL_INFO(dev)->is_pineview)
1979 #define IS_G33(dev) (INTEL_INFO(dev)->is_g33)
1980 #define IS_IRONLAKE_M(dev) ((dev)->pdev->device == 0x0046)
1981 #define IS_IVYBRIDGE(dev) (INTEL_INFO(dev)->is_ivybridge)
1982 #define IS_IVB_GT1(dev) ((dev)->pdev->device == 0x0156 || \
1983 (dev)->pdev->device == 0x0152 || \
1984 (dev)->pdev->device == 0x015a)
1985 #define IS_SNB_GT1(dev) ((dev)->pdev->device == 0x0102 || \
1986 (dev)->pdev->device == 0x0106 || \
1987 (dev)->pdev->device == 0x010A)
1988 #define IS_VALLEYVIEW(dev) (INTEL_INFO(dev)->is_valleyview)
1989 #define IS_CHERRYVIEW(dev) (INTEL_INFO(dev)->is_valleyview && IS_GEN8(dev))
1990 #define IS_HASWELL(dev) (INTEL_INFO(dev)->is_haswell)
1991 #define IS_BROADWELL(dev) (!INTEL_INFO(dev)->is_valleyview && IS_GEN8(dev))
1992 #define IS_MOBILE(dev) (INTEL_INFO(dev)->is_mobile)
1993 #define IS_HSW_EARLY_SDV(dev) (IS_HASWELL(dev) && \
1994 ((dev)->pdev->device & 0xFF00) == 0x0C00)
1995 #define IS_BDW_ULT(dev) (IS_BROADWELL(dev) && \
1996 (((dev)->pdev->device & 0xf) == 0x2 || \
1997 ((dev)->pdev->device & 0xf) == 0x6 || \
1998 ((dev)->pdev->device & 0xf) == 0xe))
1999 #define IS_HSW_ULT(dev) (IS_HASWELL(dev) && \
2000 ((dev)->pdev->device & 0xFF00) == 0x0A00)
2001 #define IS_ULT(dev) (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
2002 #define IS_HSW_GT3(dev) (IS_HASWELL(dev) && \
2003 ((dev)->pdev->device & 0x00F0) == 0x0020)
2004 /* ULX machines are also considered ULT. */
2005 #define IS_HSW_ULX(dev) ((dev)->pdev->device == 0x0A0E || \
2006 (dev)->pdev->device == 0x0A1E)
2007 #define IS_PRELIMINARY_HW(intel_info) ((intel_info)->is_preliminary)
2010 * The genX designation typically refers to the render engine, so render
2011 * capability related checks should use IS_GEN, while display and other checks
2012 * have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
2015 #define IS_GEN2(dev) (INTEL_INFO(dev)->gen == 2)
2016 #define IS_GEN3(dev) (INTEL_INFO(dev)->gen == 3)
2017 #define IS_GEN4(dev) (INTEL_INFO(dev)->gen == 4)
2018 #define IS_GEN5(dev) (INTEL_INFO(dev)->gen == 5)
2019 #define IS_GEN6(dev) (INTEL_INFO(dev)->gen == 6)
2020 #define IS_GEN7(dev) (INTEL_INFO(dev)->gen == 7)
2021 #define IS_GEN8(dev) (INTEL_INFO(dev)->gen == 8)
2023 #define RENDER_RING (1<<RCS)
2024 #define BSD_RING (1<<VCS)
2025 #define BLT_RING (1<<BCS)
2026 #define VEBOX_RING (1<<VECS)
2027 #define BSD2_RING (1<<VCS2)
2028 #define HAS_BSD(dev) (INTEL_INFO(dev)->ring_mask & BSD_RING)
2029 #define HAS_BSD2(dev) (INTEL_INFO(dev)->ring_mask & BSD2_RING)
2030 #define HAS_BLT(dev) (INTEL_INFO(dev)->ring_mask & BLT_RING)
2031 #define HAS_VEBOX(dev) (INTEL_INFO(dev)->ring_mask & VEBOX_RING)
2032 #define HAS_LLC(dev) (INTEL_INFO(dev)->has_llc)
2033 #define HAS_WT(dev) ((IS_HASWELL(dev) || IS_BROADWELL(dev)) && \
2034 to_i915(dev)->ellc_size)
2035 #define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws)
2037 #define HAS_HW_CONTEXTS(dev) (INTEL_INFO(dev)->gen >= 6)
2038 #define HAS_ALIASING_PPGTT(dev) (INTEL_INFO(dev)->gen >= 6)
2039 #define HAS_PPGTT(dev) (INTEL_INFO(dev)->gen >= 7 && !IS_GEN8(dev))
2040 #define USES_PPGTT(dev) intel_enable_ppgtt(dev, false)
2041 #define USES_FULL_PPGTT(dev) intel_enable_ppgtt(dev, true)
2043 #define HAS_OVERLAY(dev) (INTEL_INFO(dev)->has_overlay)
2044 #define OVERLAY_NEEDS_PHYSICAL(dev) (INTEL_INFO(dev)->overlay_needs_physical)
2046 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
2047 #define HAS_BROKEN_CS_TLB(dev) (IS_I830(dev) || IS_845G(dev))
2049 * dp aux and gmbus irq on gen4 seems to be able to generate legacy interrupts
2050 * even when in MSI mode. This results in spurious interrupt warnings if the
2051 * legacy irq no. is shared with another device. The kernel then disables that
2052 * interrupt source and so prevents the other device from working properly.
2054 #define HAS_AUX_IRQ(dev) (INTEL_INFO(dev)->gen >= 5)
2055 #define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 5)
2057 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
2058 * rows, which changed the alignment requirements and fence programming.
2060 #define HAS_128_BYTE_Y_TILING(dev) (!IS_GEN2(dev) && !(IS_I915G(dev) || \
2062 #define SUPPORTS_DIGITAL_OUTPUTS(dev) (!IS_GEN2(dev) && !IS_PINEVIEW(dev))
2063 #define SUPPORTS_INTEGRATED_HDMI(dev) (IS_G4X(dev) || IS_GEN5(dev))
2064 #define SUPPORTS_INTEGRATED_DP(dev) (IS_G4X(dev) || IS_GEN5(dev))
2065 #define SUPPORTS_TV(dev) (INTEL_INFO(dev)->supports_tv)
2066 #define I915_HAS_HOTPLUG(dev) (INTEL_INFO(dev)->has_hotplug)
2068 #define HAS_FW_BLC(dev) (INTEL_INFO(dev)->gen > 2)
2069 #define HAS_PIPE_CXSR(dev) (INTEL_INFO(dev)->has_pipe_cxsr)
2070 #define HAS_FBC(dev) (INTEL_INFO(dev)->has_fbc)
2072 #define HAS_IPS(dev) (IS_ULT(dev) || IS_BROADWELL(dev))
2074 #define HAS_DDI(dev) (INTEL_INFO(dev)->has_ddi)
2075 #define HAS_FPGA_DBG_UNCLAIMED(dev) (INTEL_INFO(dev)->has_fpga_dbg)
2076 #define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev))
2077 #define HAS_RUNTIME_PM(dev) (IS_GEN6(dev) || IS_HASWELL(dev) || \
2078 IS_BROADWELL(dev) || IS_VALLEYVIEW(dev))
2080 #define INTEL_PCH_DEVICE_ID_MASK 0xff00
2081 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
2082 #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
2083 #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
2084 #define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
2085 #define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
2087 #define INTEL_PCH_TYPE(dev) (to_i915(dev)->pch_type)
2088 #define HAS_PCH_LPT(dev) (INTEL_PCH_TYPE(dev) == PCH_LPT)
2089 #define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
2090 #define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
2091 #define HAS_PCH_NOP(dev) (INTEL_PCH_TYPE(dev) == PCH_NOP)
2092 #define HAS_PCH_SPLIT(dev) (INTEL_PCH_TYPE(dev) != PCH_NONE)
2094 /* DPF == dynamic parity feature */
2095 #define HAS_L3_DPF(dev) (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
2096 #define NUM_L3_SLICES(dev) (IS_HSW_GT3(dev) ? 2 : HAS_L3_DPF(dev))
2098 #define GT_FREQUENCY_MULTIPLIER 50
2100 #include "i915_trace.h"
2102 extern const struct drm_ioctl_desc i915_ioctls[];
2103 extern int i915_max_ioctl;
2105 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
2106 extern int i915_resume(struct drm_device *dev);
2107 extern int i915_master_create(struct drm_device *dev, struct drm_master *master);
2108 extern void i915_master_destroy(struct drm_device *dev, struct drm_master *master);
2111 struct i915_params {
2113 int panel_ignore_lid;
2114 unsigned int powersave;
2116 unsigned int lvds_downclock;
2117 int lvds_channel_mode;
2119 int vbt_sdvo_panel_type;
2124 unsigned int preliminary_hw_support;
2125 int disable_power_well;
2127 int invert_brightness;
2128 int enable_cmd_parser;
2129 /* leave bools at the end to not create holes */
2130 bool enable_hangcheck;
2132 bool prefault_disable;
2134 bool disable_display;
2135 bool disable_vtd_wa;
2138 extern struct i915_params i915 __read_mostly;
2141 void i915_update_dri1_breadcrumb(struct drm_device *dev);
2142 extern void i915_kernel_lost_context(struct drm_device * dev);
2143 extern int i915_driver_load(struct drm_device *, unsigned long flags);
2144 extern int i915_driver_unload(struct drm_device *);
2145 extern int i915_driver_open(struct drm_device *dev, struct drm_file *file);
2146 extern void i915_driver_lastclose(struct drm_device * dev);
2147 extern void i915_driver_preclose(struct drm_device *dev,
2148 struct drm_file *file);
2149 extern void i915_driver_postclose(struct drm_device *dev,
2150 struct drm_file *file);
2151 extern int i915_driver_device_is_agp(struct drm_device * dev);
2152 #ifdef CONFIG_COMPAT
2153 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
2156 extern int i915_emit_box(struct drm_device *dev,
2157 struct drm_clip_rect *box,
2159 extern int intel_gpu_reset(struct drm_device *dev);
2160 extern int i915_reset(struct drm_device *dev);
2161 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
2162 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
2163 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
2164 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
2165 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
2167 extern void intel_console_resume(struct work_struct *work);
2170 void i915_queue_hangcheck(struct drm_device *dev);
2172 void i915_handle_error(struct drm_device *dev, bool wedged,
2173 const char *fmt, ...);
2175 void gen6_set_pm_mask(struct drm_i915_private *dev_priv, u32 pm_iir,
2177 extern void intel_irq_init(struct drm_device *dev);
2178 extern void intel_hpd_init(struct drm_device *dev);
2180 extern void intel_uncore_sanitize(struct drm_device *dev);
2181 extern void intel_uncore_early_sanitize(struct drm_device *dev,
2182 bool restore_forcewake);
2183 extern void intel_uncore_init(struct drm_device *dev);
2184 extern void intel_uncore_check_errors(struct drm_device *dev);
2185 extern void intel_uncore_fini(struct drm_device *dev);
2186 extern void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore);
2189 i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2193 i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2196 void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
2197 void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
2200 int i915_gem_init_ioctl(struct drm_device *dev, void *data,
2201 struct drm_file *file_priv);
2202 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
2203 struct drm_file *file_priv);
2204 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
2205 struct drm_file *file_priv);
2206 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
2207 struct drm_file *file_priv);
2208 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
2209 struct drm_file *file_priv);
2210 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
2211 struct drm_file *file_priv);
2212 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
2213 struct drm_file *file_priv);
2214 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
2215 struct drm_file *file_priv);
2216 int i915_gem_execbuffer(struct drm_device *dev, void *data,
2217 struct drm_file *file_priv);
2218 int i915_gem_execbuffer2(struct drm_device *dev, void *data,
2219 struct drm_file *file_priv);
2220 int i915_gem_pin_ioctl(struct drm_device *dev, void *data,
2221 struct drm_file *file_priv);
2222 int i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
2223 struct drm_file *file_priv);
2224 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
2225 struct drm_file *file_priv);
2226 int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
2227 struct drm_file *file);
2228 int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
2229 struct drm_file *file);
2230 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
2231 struct drm_file *file_priv);
2232 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
2233 struct drm_file *file_priv);
2234 int i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
2235 struct drm_file *file_priv);
2236 int i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
2237 struct drm_file *file_priv);
2238 int i915_gem_set_tiling(struct drm_device *dev, void *data,
2239 struct drm_file *file_priv);
2240 int i915_gem_get_tiling(struct drm_device *dev, void *data,
2241 struct drm_file *file_priv);
2242 int i915_gem_init_userptr(struct drm_device *dev);
2243 int i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
2244 struct drm_file *file);
2245 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
2246 struct drm_file *file_priv);
2247 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
2248 struct drm_file *file_priv);
2249 void i915_gem_load(struct drm_device *dev);
2250 void *i915_gem_object_alloc(struct drm_device *dev);
2251 void i915_gem_object_free(struct drm_i915_gem_object *obj);
2252 void i915_gem_object_init(struct drm_i915_gem_object *obj,
2253 const struct drm_i915_gem_object_ops *ops);
2254 struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
2256 void i915_init_vm(struct drm_i915_private *dev_priv,
2257 struct i915_address_space *vm);
2258 void i915_gem_free_object(struct drm_gem_object *obj);
2259 void i915_gem_vma_destroy(struct i915_vma *vma);
2261 #define PIN_MAPPABLE 0x1
2262 #define PIN_NONBLOCK 0x2
2263 #define PIN_GLOBAL 0x4
2264 #define PIN_OFFSET_BIAS 0x8
2265 #define PIN_OFFSET_MASK (~4095)
2266 int __must_check i915_gem_object_pin(struct drm_i915_gem_object *obj,
2267 struct i915_address_space *vm,
2270 int __must_check i915_vma_unbind(struct i915_vma *vma);
2271 int i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
2272 void i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv);
2273 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
2274 void i915_gem_lastclose(struct drm_device *dev);
2276 int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
2277 int *needs_clflush);
2279 int __must_check i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
2280 static inline struct page *i915_gem_object_get_page(struct drm_i915_gem_object *obj, int n)
2282 struct sg_page_iter sg_iter;
2284 for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, n)
2285 return sg_page_iter_page(&sg_iter);
2289 static inline void i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2291 BUG_ON(obj->pages == NULL);
2292 obj->pages_pin_count++;
2294 static inline void i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
2296 BUG_ON(obj->pages_pin_count == 0);
2297 obj->pages_pin_count--;
2300 int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
2301 int i915_gem_object_sync(struct drm_i915_gem_object *obj,
2302 struct intel_engine_cs *to);
2303 void i915_vma_move_to_active(struct i915_vma *vma,
2304 struct intel_engine_cs *ring);
2305 int i915_gem_dumb_create(struct drm_file *file_priv,
2306 struct drm_device *dev,
2307 struct drm_mode_create_dumb *args);
2308 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
2309 uint32_t handle, uint64_t *offset);
2311 * Returns true if seq1 is later than seq2.
2314 i915_seqno_passed(uint32_t seq1, uint32_t seq2)
2316 return (int32_t)(seq1 - seq2) >= 0;
2319 int __must_check i915_gem_get_seqno(struct drm_device *dev, u32 *seqno);
2320 int __must_check i915_gem_set_seqno(struct drm_device *dev, u32 seqno);
2321 int __must_check i915_gem_object_get_fence(struct drm_i915_gem_object *obj);
2322 int __must_check i915_gem_object_put_fence(struct drm_i915_gem_object *obj);
2324 bool i915_gem_object_pin_fence(struct drm_i915_gem_object *obj);
2325 void i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj);
2327 struct drm_i915_gem_request *
2328 i915_gem_find_active_request(struct intel_engine_cs *ring);
2330 bool i915_gem_retire_requests(struct drm_device *dev);
2331 void i915_gem_retire_requests_ring(struct intel_engine_cs *ring);
2332 int __must_check i915_gem_check_wedge(struct i915_gpu_error *error,
2333 bool interruptible);
2334 int __must_check i915_gem_check_olr(struct intel_engine_cs *ring, u32 seqno);
2336 static inline bool i915_reset_in_progress(struct i915_gpu_error *error)
2338 return unlikely(atomic_read(&error->reset_counter)
2339 & (I915_RESET_IN_PROGRESS_FLAG | I915_WEDGED));
2342 static inline bool i915_terminally_wedged(struct i915_gpu_error *error)
2344 return atomic_read(&error->reset_counter) & I915_WEDGED;
2347 static inline u32 i915_reset_count(struct i915_gpu_error *error)
2349 return ((atomic_read(&error->reset_counter) & ~I915_WEDGED) + 1) / 2;
2352 static inline bool i915_stop_ring_allow_ban(struct drm_i915_private *dev_priv)
2354 return dev_priv->gpu_error.stop_rings == 0 ||
2355 dev_priv->gpu_error.stop_rings & I915_STOP_RING_ALLOW_BAN;
2358 static inline bool i915_stop_ring_allow_warn(struct drm_i915_private *dev_priv)
2360 return dev_priv->gpu_error.stop_rings == 0 ||
2361 dev_priv->gpu_error.stop_rings & I915_STOP_RING_ALLOW_WARN;
2364 void i915_gem_reset(struct drm_device *dev);
2365 bool i915_gem_clflush_object(struct drm_i915_gem_object *obj, bool force);
2366 int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj);
2367 int __must_check i915_gem_init(struct drm_device *dev);
2368 int __must_check i915_gem_init_hw(struct drm_device *dev);
2369 int i915_gem_l3_remap(struct intel_engine_cs *ring, int slice);
2370 void i915_gem_init_swizzling(struct drm_device *dev);
2371 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
2372 int __must_check i915_gpu_idle(struct drm_device *dev);
2373 int __must_check i915_gem_suspend(struct drm_device *dev);
2374 int __i915_add_request(struct intel_engine_cs *ring,
2375 struct drm_file *file,
2376 struct drm_i915_gem_object *batch_obj,
2378 #define i915_add_request(ring, seqno) \
2379 __i915_add_request(ring, NULL, NULL, seqno)
2380 int __must_check i915_wait_seqno(struct intel_engine_cs *ring,
2382 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
2384 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
2387 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
2389 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
2391 struct intel_engine_cs *pipelined);
2392 void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj);
2393 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
2395 int i915_gem_open(struct drm_device *dev, struct drm_file *file);
2396 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
2399 i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode);
2401 i915_gem_get_gtt_alignment(struct drm_device *dev, uint32_t size,
2402 int tiling_mode, bool fenced);
2404 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
2405 enum i915_cache_level cache_level);
2407 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
2408 struct dma_buf *dma_buf);
2410 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
2411 struct drm_gem_object *gem_obj, int flags);
2413 void i915_gem_restore_fences(struct drm_device *dev);
2415 unsigned long i915_gem_obj_offset(struct drm_i915_gem_object *o,
2416 struct i915_address_space *vm);
2417 bool i915_gem_obj_bound_any(struct drm_i915_gem_object *o);
2418 bool i915_gem_obj_bound(struct drm_i915_gem_object *o,
2419 struct i915_address_space *vm);
2420 unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o,
2421 struct i915_address_space *vm);
2422 struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
2423 struct i915_address_space *vm);
2425 i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
2426 struct i915_address_space *vm);
2428 struct i915_vma *i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj);
2429 static inline bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj) {
2430 struct i915_vma *vma;
2431 list_for_each_entry(vma, &obj->vma_list, vma_link)
2432 if (vma->pin_count > 0)
2437 /* Some GGTT VM helpers */
2438 #define obj_to_ggtt(obj) \
2439 (&((struct drm_i915_private *)(obj)->base.dev->dev_private)->gtt.base)
2440 static inline bool i915_is_ggtt(struct i915_address_space *vm)
2442 struct i915_address_space *ggtt =
2443 &((struct drm_i915_private *)(vm)->dev->dev_private)->gtt.base;
2447 static inline bool i915_gem_obj_ggtt_bound(struct drm_i915_gem_object *obj)
2449 return i915_gem_obj_bound(obj, obj_to_ggtt(obj));
2452 static inline unsigned long
2453 i915_gem_obj_ggtt_offset(struct drm_i915_gem_object *obj)
2455 return i915_gem_obj_offset(obj, obj_to_ggtt(obj));
2458 static inline unsigned long
2459 i915_gem_obj_ggtt_size(struct drm_i915_gem_object *obj)
2461 return i915_gem_obj_size(obj, obj_to_ggtt(obj));
2464 static inline int __must_check
2465 i915_gem_obj_ggtt_pin(struct drm_i915_gem_object *obj,
2469 return i915_gem_object_pin(obj, obj_to_ggtt(obj), alignment, flags | PIN_GLOBAL);
2473 i915_gem_object_ggtt_unbind(struct drm_i915_gem_object *obj)
2475 return i915_vma_unbind(i915_gem_obj_to_ggtt(obj));
2478 void i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj);
2480 /* i915_gem_context.c */
2481 #define ctx_to_ppgtt(ctx) container_of((ctx)->vm, struct i915_hw_ppgtt, base)
2482 int __must_check i915_gem_context_init(struct drm_device *dev);
2483 void i915_gem_context_fini(struct drm_device *dev);
2484 void i915_gem_context_reset(struct drm_device *dev);
2485 int i915_gem_context_open(struct drm_device *dev, struct drm_file *file);
2486 int i915_gem_context_enable(struct drm_i915_private *dev_priv);
2487 void i915_gem_context_close(struct drm_device *dev, struct drm_file *file);
2488 int i915_switch_context(struct intel_engine_cs *ring,
2489 struct intel_context *to);
2490 struct intel_context *
2491 i915_gem_context_get(struct drm_i915_file_private *file_priv, u32 id);
2492 void i915_gem_context_free(struct kref *ctx_ref);
2493 static inline void i915_gem_context_reference(struct intel_context *ctx)
2495 kref_get(&ctx->ref);
2498 static inline void i915_gem_context_unreference(struct intel_context *ctx)
2500 kref_put(&ctx->ref, i915_gem_context_free);
2503 static inline bool i915_gem_context_is_default(const struct intel_context *c)
2505 return c->user_handle == DEFAULT_CONTEXT_HANDLE;
2508 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
2509 struct drm_file *file);
2510 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
2511 struct drm_file *file);
2513 /* i915_gem_render_state.c */
2514 int i915_gem_render_state_init(struct intel_engine_cs *ring);
2515 /* i915_gem_evict.c */
2516 int __must_check i915_gem_evict_something(struct drm_device *dev,
2517 struct i915_address_space *vm,
2520 unsigned cache_level,
2521 unsigned long start,
2524 int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle);
2525 int i915_gem_evict_everything(struct drm_device *dev);
2527 /* belongs in i915_gem_gtt.h */
2528 static inline void i915_gem_chipset_flush(struct drm_device *dev)
2530 if (INTEL_INFO(dev)->gen < 6)
2531 intel_gtt_chipset_flush();
2534 /* i915_gem_stolen.c */
2535 int i915_gem_init_stolen(struct drm_device *dev);
2536 int i915_gem_stolen_setup_compression(struct drm_device *dev, int size, int fb_cpp);
2537 void i915_gem_stolen_cleanup_compression(struct drm_device *dev);
2538 void i915_gem_cleanup_stolen(struct drm_device *dev);
2539 struct drm_i915_gem_object *
2540 i915_gem_object_create_stolen(struct drm_device *dev, u32 size);
2541 struct drm_i915_gem_object *
2542 i915_gem_object_create_stolen_for_preallocated(struct drm_device *dev,
2547 /* i915_gem_tiling.c */
2548 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
2550 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
2552 return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
2553 obj->tiling_mode != I915_TILING_NONE;
2556 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
2557 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj);
2558 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj);
2560 /* i915_gem_debug.c */
2562 int i915_verify_lists(struct drm_device *dev);
2564 #define i915_verify_lists(dev) 0
2567 /* i915_debugfs.c */
2568 int i915_debugfs_init(struct drm_minor *minor);
2569 void i915_debugfs_cleanup(struct drm_minor *minor);
2570 #ifdef CONFIG_DEBUG_FS
2571 void intel_display_crc_init(struct drm_device *dev);
2573 static inline void intel_display_crc_init(struct drm_device *dev) {}
2576 /* i915_gpu_error.c */
2578 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...);
2579 int i915_error_state_to_str(struct drm_i915_error_state_buf *estr,
2580 const struct i915_error_state_file_priv *error);
2581 int i915_error_state_buf_init(struct drm_i915_error_state_buf *eb,
2582 size_t count, loff_t pos);
2583 static inline void i915_error_state_buf_release(
2584 struct drm_i915_error_state_buf *eb)
2588 void i915_capture_error_state(struct drm_device *dev, bool wedge,
2589 const char *error_msg);
2590 void i915_error_state_get(struct drm_device *dev,
2591 struct i915_error_state_file_priv *error_priv);
2592 void i915_error_state_put(struct i915_error_state_file_priv *error_priv);
2593 void i915_destroy_error_state(struct drm_device *dev);
2595 void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone);
2596 const char *i915_cache_level_str(int type);
2598 /* i915_cmd_parser.c */
2599 int i915_cmd_parser_get_version(void);
2600 int i915_cmd_parser_init_ring(struct intel_engine_cs *ring);
2601 void i915_cmd_parser_fini_ring(struct intel_engine_cs *ring);
2602 bool i915_needs_cmd_parser(struct intel_engine_cs *ring);
2603 int i915_parse_cmds(struct intel_engine_cs *ring,
2604 struct drm_i915_gem_object *batch_obj,
2605 u32 batch_start_offset,
2608 /* i915_suspend.c */
2609 extern int i915_save_state(struct drm_device *dev);
2610 extern int i915_restore_state(struct drm_device *dev);
2613 void i915_save_display_reg(struct drm_device *dev);
2614 void i915_restore_display_reg(struct drm_device *dev);
2617 void i915_setup_sysfs(struct drm_device *dev_priv);
2618 void i915_teardown_sysfs(struct drm_device *dev_priv);
2621 extern int intel_setup_gmbus(struct drm_device *dev);
2622 extern void intel_teardown_gmbus(struct drm_device *dev);
2623 static inline bool intel_gmbus_is_port_valid(unsigned port)
2625 return (port >= GMBUS_PORT_SSC && port <= GMBUS_PORT_DPD);
2628 extern struct i2c_adapter *intel_gmbus_get_adapter(
2629 struct drm_i915_private *dev_priv, unsigned port);
2630 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
2631 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
2632 static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
2634 return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
2636 extern void intel_i2c_reset(struct drm_device *dev);
2638 /* intel_opregion.c */
2639 struct intel_encoder;
2641 extern int intel_opregion_setup(struct drm_device *dev);
2642 extern void intel_opregion_init(struct drm_device *dev);
2643 extern void intel_opregion_fini(struct drm_device *dev);
2644 extern void intel_opregion_asle_intr(struct drm_device *dev);
2645 extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
2647 extern int intel_opregion_notify_adapter(struct drm_device *dev,
2650 static inline int intel_opregion_setup(struct drm_device *dev) { return 0; }
2651 static inline void intel_opregion_init(struct drm_device *dev) { return; }
2652 static inline void intel_opregion_fini(struct drm_device *dev) { return; }
2653 static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
2655 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
2660 intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
2668 extern void intel_register_dsm_handler(void);
2669 extern void intel_unregister_dsm_handler(void);
2671 static inline void intel_register_dsm_handler(void) { return; }
2672 static inline void intel_unregister_dsm_handler(void) { return; }
2673 #endif /* CONFIG_ACPI */
2676 extern void intel_modeset_init_hw(struct drm_device *dev);
2677 extern void intel_modeset_suspend_hw(struct drm_device *dev);
2678 extern void intel_modeset_init(struct drm_device *dev);
2679 extern void intel_modeset_gem_init(struct drm_device *dev);
2680 extern void intel_modeset_cleanup(struct drm_device *dev);
2681 extern void intel_connector_unregister(struct intel_connector *);
2682 extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state);
2683 extern void intel_modeset_setup_hw_state(struct drm_device *dev,
2684 bool force_restore);
2685 extern void i915_redisable_vga(struct drm_device *dev);
2686 extern void i915_redisable_vga_power_on(struct drm_device *dev);
2687 extern bool intel_fbc_enabled(struct drm_device *dev);
2688 extern void intel_disable_fbc(struct drm_device *dev);
2689 extern bool ironlake_set_drps(struct drm_device *dev, u8 val);
2690 extern void intel_init_pch_refclk(struct drm_device *dev);
2691 extern void gen6_set_rps(struct drm_device *dev, u8 val);
2692 extern void valleyview_set_rps(struct drm_device *dev, u8 val);
2693 extern int valleyview_rps_max_freq(struct drm_i915_private *dev_priv);
2694 extern int valleyview_rps_min_freq(struct drm_i915_private *dev_priv);
2695 extern void intel_set_memory_cxsr(struct drm_i915_private *dev_priv,
2697 extern void intel_detect_pch(struct drm_device *dev);
2698 extern int intel_trans_dp_port_sel(struct drm_crtc *crtc);
2699 extern int intel_enable_rc6(const struct drm_device *dev);
2701 extern bool i915_semaphore_is_enabled(struct drm_device *dev);
2702 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
2703 struct drm_file *file);
2704 int i915_get_reset_stats_ioctl(struct drm_device *dev, void *data,
2705 struct drm_file *file);
2707 void intel_notify_mmio_flip(struct intel_engine_cs *ring);
2710 extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
2711 extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
2712 struct intel_overlay_error_state *error);
2714 extern struct intel_display_error_state *intel_display_capture_error_state(struct drm_device *dev);
2715 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
2716 struct drm_device *dev,
2717 struct intel_display_error_state *error);
2719 /* On SNB platform, before reading ring registers forcewake bit
2720 * must be set to prevent GT core from power down and stale values being
2723 void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine);
2724 void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine);
2725 void assert_force_wake_inactive(struct drm_i915_private *dev_priv);
2727 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val);
2728 int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val);
2730 /* intel_sideband.c */
2731 u32 vlv_punit_read(struct drm_i915_private *dev_priv, u8 addr);
2732 void vlv_punit_write(struct drm_i915_private *dev_priv, u8 addr, u32 val);
2733 u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
2734 u32 vlv_gpio_nc_read(struct drm_i915_private *dev_priv, u32 reg);
2735 void vlv_gpio_nc_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2736 u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
2737 void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2738 u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
2739 void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2740 u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
2741 void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2742 u32 vlv_gps_core_read(struct drm_i915_private *dev_priv, u32 reg);
2743 void vlv_gps_core_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2744 u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
2745 void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
2746 u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
2747 enum intel_sbi_destination destination);
2748 void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
2749 enum intel_sbi_destination destination);
2750 u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
2751 void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
2753 int vlv_gpu_freq(struct drm_i915_private *dev_priv, int val);
2754 int vlv_freq_opcode(struct drm_i915_private *dev_priv, int val);
2756 #define FORCEWAKE_RENDER (1 << 0)
2757 #define FORCEWAKE_MEDIA (1 << 1)
2758 #define FORCEWAKE_ALL (FORCEWAKE_RENDER | FORCEWAKE_MEDIA)
2761 #define I915_READ8(reg) dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true)
2762 #define I915_WRITE8(reg, val) dev_priv->uncore.funcs.mmio_writeb(dev_priv, (reg), (val), true)
2764 #define I915_READ16(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), true)
2765 #define I915_WRITE16(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), true)
2766 #define I915_READ16_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), false)
2767 #define I915_WRITE16_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), false)
2769 #define I915_READ(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), true)
2770 #define I915_WRITE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), true)
2771 #define I915_READ_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), false)
2772 #define I915_WRITE_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), false)
2774 /* Be very careful with read/write 64-bit values. On 32-bit machines, they
2775 * will be implemented using 2 32-bit writes in an arbitrary order with
2776 * an arbitrary delay between them. This can cause the hardware to
2777 * act upon the intermediate value, possibly leading to corruption and
2778 * machine death. You have been warned.
2780 #define I915_WRITE64(reg, val) dev_priv->uncore.funcs.mmio_writeq(dev_priv, (reg), (val), true)
2781 #define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
2783 #define I915_READ64_2x32(lower_reg, upper_reg) ({ \
2784 u32 upper = I915_READ(upper_reg); \
2785 u32 lower = I915_READ(lower_reg); \
2786 u32 tmp = I915_READ(upper_reg); \
2787 if (upper != tmp) { \
2789 lower = I915_READ(lower_reg); \
2790 WARN_ON(I915_READ(upper_reg) != upper); \
2792 (u64)upper << 32 | lower; })
2794 #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
2795 #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
2797 /* "Broadcast RGB" property */
2798 #define INTEL_BROADCAST_RGB_AUTO 0
2799 #define INTEL_BROADCAST_RGB_FULL 1
2800 #define INTEL_BROADCAST_RGB_LIMITED 2
2802 static inline uint32_t i915_vgacntrl_reg(struct drm_device *dev)
2804 if (HAS_PCH_SPLIT(dev))
2805 return CPU_VGACNTRL;
2806 else if (IS_VALLEYVIEW(dev))
2807 return VLV_VGACNTRL;
2812 static inline void __user *to_user_ptr(u64 address)
2814 return (void __user *)(uintptr_t)address;
2817 static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m)
2819 unsigned long j = msecs_to_jiffies(m);
2821 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
2824 static inline unsigned long
2825 timespec_to_jiffies_timeout(const struct timespec *value)
2827 unsigned long j = timespec_to_jiffies(value);
2829 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
2833 * If you need to wait X milliseconds between events A and B, but event B
2834 * doesn't happen exactly after event A, you record the timestamp (jiffies) of
2835 * when event A happened, then just before event B you call this function and
2836 * pass the timestamp as the first argument, and X as the second argument.
2839 wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
2841 unsigned long target_jiffies, tmp_jiffies, remaining_jiffies;
2844 * Don't re-read the value of "jiffies" every time since it may change
2845 * behind our back and break the math.
2847 tmp_jiffies = jiffies;
2848 target_jiffies = timestamp_jiffies +
2849 msecs_to_jiffies_timeout(to_wait_ms);
2851 if (time_after(target_jiffies, tmp_jiffies)) {
2852 remaining_jiffies = target_jiffies - tmp_jiffies;
2853 while (remaining_jiffies)
2855 schedule_timeout_uninterruptible(remaining_jiffies);