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>
34 #include <uapi/drm/drm_fourcc.h>
37 #include "intel_bios.h"
38 #include "intel_ringbuffer.h"
39 #include "intel_lrc.h"
40 #include "i915_gem_gtt.h"
41 #include "i915_gem_render_state.h"
42 #include <linux/io-mapping.h>
43 #include <linux/i2c.h>
44 #include <linux/i2c-algo-bit.h>
45 #include <drm/intel-gtt.h>
46 #include <drm/drm_legacy.h> /* for struct drm_dma_handle */
47 #include <drm/drm_gem.h>
48 #include <linux/backlight.h>
49 #include <linux/hashtable.h>
50 #include <linux/intel-iommu.h>
51 #include <linux/kref.h>
52 #include <linux/pm_qos.h>
53 #include "intel_guc.h"
55 /* General customization:
58 #define DRIVER_NAME "i915"
59 #define DRIVER_DESC "Intel Graphics"
60 #define DRIVER_DATE "20150928"
63 /* Many gcc seem to no see through this and fall over :( */
65 #define WARN_ON(x) ({ \
66 bool __i915_warn_cond = (x); \
67 if (__builtin_constant_p(__i915_warn_cond)) \
68 BUILD_BUG_ON(__i915_warn_cond); \
69 WARN(__i915_warn_cond, "WARN_ON(" #x ")"); })
71 #define WARN_ON(x) WARN((x), "WARN_ON(%s)", #x )
75 #define WARN_ON_ONCE(x) WARN_ONCE((x), "WARN_ON_ONCE(%s)", #x )
77 #define MISSING_CASE(x) WARN(1, "Missing switch case (%lu) in %s\n", \
78 (long) (x), __func__);
80 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
81 * WARN_ON()) for hw state sanity checks to check for unexpected conditions
82 * which may not necessarily be a user visible problem. This will either
83 * WARN() or DRM_ERROR() depending on the verbose_checks moduleparam, to
84 * enable distros and users to tailor their preferred amount of i915 abrt
87 #define I915_STATE_WARN(condition, format...) ({ \
88 int __ret_warn_on = !!(condition); \
89 if (unlikely(__ret_warn_on)) { \
90 if (i915.verbose_state_checks) \
95 unlikely(__ret_warn_on); \
98 #define I915_STATE_WARN_ON(condition) ({ \
99 int __ret_warn_on = !!(condition); \
100 if (unlikely(__ret_warn_on)) { \
101 if (i915.verbose_state_checks) \
102 WARN(1, "WARN_ON(" #condition ")\n"); \
104 DRM_ERROR("WARN_ON(" #condition ")\n"); \
106 unlikely(__ret_warn_on); \
109 static inline const char *yesno(bool v)
111 return v ? "yes" : "no";
120 I915_MAX_PIPES = _PIPE_EDP
122 #define pipe_name(p) ((p) + 'A')
131 #define transcoder_name(t) ((t) + 'A')
134 * I915_MAX_PLANES in the enum below is the maximum (across all platforms)
135 * number of planes per CRTC. Not all platforms really have this many planes,
136 * which means some arrays of size I915_MAX_PLANES may have unused entries
137 * between the topmost sprite plane and the cursor plane.
146 #define plane_name(p) ((p) + 'A')
148 #define sprite_name(p, s) ((p) * INTEL_INFO(dev)->num_sprites[(p)] + (s) + 'A')
158 #define port_name(p) ((p) + 'A')
160 #define I915_NUM_PHYS_VLV 2
172 enum intel_display_power_domain {
176 POWER_DOMAIN_PIPE_A_PANEL_FITTER,
177 POWER_DOMAIN_PIPE_B_PANEL_FITTER,
178 POWER_DOMAIN_PIPE_C_PANEL_FITTER,
179 POWER_DOMAIN_TRANSCODER_A,
180 POWER_DOMAIN_TRANSCODER_B,
181 POWER_DOMAIN_TRANSCODER_C,
182 POWER_DOMAIN_TRANSCODER_EDP,
183 POWER_DOMAIN_PORT_DDI_A_2_LANES,
184 POWER_DOMAIN_PORT_DDI_A_4_LANES,
185 POWER_DOMAIN_PORT_DDI_B_2_LANES,
186 POWER_DOMAIN_PORT_DDI_B_4_LANES,
187 POWER_DOMAIN_PORT_DDI_C_2_LANES,
188 POWER_DOMAIN_PORT_DDI_C_4_LANES,
189 POWER_DOMAIN_PORT_DDI_D_2_LANES,
190 POWER_DOMAIN_PORT_DDI_D_4_LANES,
191 POWER_DOMAIN_PORT_DDI_E_2_LANES,
192 POWER_DOMAIN_PORT_DSI,
193 POWER_DOMAIN_PORT_CRT,
194 POWER_DOMAIN_PORT_OTHER,
207 #define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
208 #define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
209 ((pipe) + POWER_DOMAIN_PIPE_A_PANEL_FITTER)
210 #define POWER_DOMAIN_TRANSCODER(tran) \
211 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
212 (tran) + POWER_DOMAIN_TRANSCODER_A)
216 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
228 #define for_each_hpd_pin(__pin) \
229 for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
231 struct i915_hotplug {
232 struct work_struct hotplug_work;
235 unsigned long last_jiffies;
240 HPD_MARK_DISABLED = 2
242 } stats[HPD_NUM_PINS];
244 struct delayed_work reenable_work;
246 struct intel_digital_port *irq_port[I915_MAX_PORTS];
249 struct work_struct dig_port_work;
252 * if we get a HPD irq from DP and a HPD irq from non-DP
253 * the non-DP HPD could block the workqueue on a mode config
254 * mutex getting, that userspace may have taken. However
255 * userspace is waiting on the DP workqueue to run which is
256 * blocked behind the non-DP one.
258 struct workqueue_struct *dp_wq;
261 #define I915_GEM_GPU_DOMAINS \
262 (I915_GEM_DOMAIN_RENDER | \
263 I915_GEM_DOMAIN_SAMPLER | \
264 I915_GEM_DOMAIN_COMMAND | \
265 I915_GEM_DOMAIN_INSTRUCTION | \
266 I915_GEM_DOMAIN_VERTEX)
268 #define for_each_pipe(__dev_priv, __p) \
269 for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++)
270 #define for_each_plane(__dev_priv, __pipe, __p) \
272 (__p) < INTEL_INFO(__dev_priv)->num_sprites[(__pipe)] + 1; \
274 #define for_each_sprite(__dev_priv, __p, __s) \
276 (__s) < INTEL_INFO(__dev_priv)->num_sprites[(__p)]; \
279 #define for_each_crtc(dev, crtc) \
280 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
282 #define for_each_intel_plane(dev, intel_plane) \
283 list_for_each_entry(intel_plane, \
284 &dev->mode_config.plane_list, \
287 #define for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) \
288 list_for_each_entry(intel_plane, \
289 &(dev)->mode_config.plane_list, \
291 if ((intel_plane)->pipe == (intel_crtc)->pipe)
293 #define for_each_intel_crtc(dev, intel_crtc) \
294 list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, base.head)
296 #define for_each_intel_encoder(dev, intel_encoder) \
297 list_for_each_entry(intel_encoder, \
298 &(dev)->mode_config.encoder_list, \
301 #define for_each_intel_connector(dev, intel_connector) \
302 list_for_each_entry(intel_connector, \
303 &dev->mode_config.connector_list, \
306 #define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
307 list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
308 if ((intel_encoder)->base.crtc == (__crtc))
310 #define for_each_connector_on_encoder(dev, __encoder, intel_connector) \
311 list_for_each_entry((intel_connector), &(dev)->mode_config.connector_list, base.head) \
312 if ((intel_connector)->base.encoder == (__encoder))
314 #define for_each_power_domain(domain, mask) \
315 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
316 if ((1 << (domain)) & (mask))
318 struct drm_i915_private;
319 struct i915_mm_struct;
320 struct i915_mmu_object;
322 struct drm_i915_file_private {
323 struct drm_i915_private *dev_priv;
324 struct drm_file *file;
328 struct list_head request_list;
329 /* 20ms is a fairly arbitrary limit (greater than the average frame time)
330 * chosen to prevent the CPU getting more than a frame ahead of the GPU
331 * (when using lax throttling for the frontbuffer). We also use it to
332 * offer free GPU waitboosts for severely congested workloads.
334 #define DRM_I915_THROTTLE_JIFFIES msecs_to_jiffies(20)
336 struct idr context_idr;
338 struct intel_rps_client {
339 struct list_head link;
343 struct intel_engine_cs *bsd_ring;
347 DPLL_ID_PRIVATE = -1, /* non-shared dpll in use */
348 /* real shared dpll ids must be >= 0 */
349 DPLL_ID_PCH_PLL_A = 0,
350 DPLL_ID_PCH_PLL_B = 1,
355 DPLL_ID_SKL_DPLL1 = 0,
356 DPLL_ID_SKL_DPLL2 = 1,
357 DPLL_ID_SKL_DPLL3 = 2,
359 #define I915_NUM_PLLS 3
361 struct intel_dpll_hw_state {
373 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
374 * lower part of ctrl1 and they get shifted into position when writing
375 * the register. This allows us to easily compare the state to share
379 /* HDMI only, 0 when used for DP */
380 uint32_t cfgcr1, cfgcr2;
383 uint32_t ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10,
387 struct intel_shared_dpll_config {
388 unsigned crtc_mask; /* mask of CRTCs sharing this PLL */
389 struct intel_dpll_hw_state hw_state;
392 struct intel_shared_dpll {
393 struct intel_shared_dpll_config config;
395 int active; /* count of number of active CRTCs (i.e. DPMS on) */
396 bool on; /* is the PLL actually active? Disabled during modeset */
398 /* should match the index in the dev_priv->shared_dplls array */
399 enum intel_dpll_id id;
400 /* The mode_set hook is optional and should be used together with the
401 * intel_prepare_shared_dpll function. */
402 void (*mode_set)(struct drm_i915_private *dev_priv,
403 struct intel_shared_dpll *pll);
404 void (*enable)(struct drm_i915_private *dev_priv,
405 struct intel_shared_dpll *pll);
406 void (*disable)(struct drm_i915_private *dev_priv,
407 struct intel_shared_dpll *pll);
408 bool (*get_hw_state)(struct drm_i915_private *dev_priv,
409 struct intel_shared_dpll *pll,
410 struct intel_dpll_hw_state *hw_state);
418 /* Used by dp and fdi links */
419 struct intel_link_m_n {
427 void intel_link_compute_m_n(int bpp, int nlanes,
428 int pixel_clock, int link_clock,
429 struct intel_link_m_n *m_n);
431 /* Interface history:
434 * 1.2: Add Power Management
435 * 1.3: Add vblank support
436 * 1.4: Fix cmdbuffer path, add heap destroy
437 * 1.5: Add vblank pipe configuration
438 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
439 * - Support vertical blank on secondary display pipe
441 #define DRIVER_MAJOR 1
442 #define DRIVER_MINOR 6
443 #define DRIVER_PATCHLEVEL 0
445 #define WATCH_LISTS 0
447 struct opregion_header;
448 struct opregion_acpi;
449 struct opregion_swsci;
450 struct opregion_asle;
452 struct intel_opregion {
453 struct opregion_header __iomem *header;
454 struct opregion_acpi __iomem *acpi;
455 struct opregion_swsci __iomem *swsci;
456 u32 swsci_gbda_sub_functions;
457 u32 swsci_sbcb_sub_functions;
458 struct opregion_asle __iomem *asle;
460 u32 __iomem *lid_state;
461 struct work_struct asle_work;
463 #define OPREGION_SIZE (8*1024)
465 struct intel_overlay;
466 struct intel_overlay_error_state;
468 #define I915_FENCE_REG_NONE -1
469 #define I915_MAX_NUM_FENCES 32
470 /* 32 fences + sign bit for FENCE_REG_NONE */
471 #define I915_MAX_NUM_FENCE_BITS 6
473 struct drm_i915_fence_reg {
474 struct list_head lru_list;
475 struct drm_i915_gem_object *obj;
479 struct sdvo_device_mapping {
488 struct intel_display_error_state;
490 struct drm_i915_error_state {
499 /* Generic register state */
507 u32 error; /* gen6+ */
508 u32 err_int; /* gen7 */
509 u32 fault_data0; /* gen8, gen9 */
510 u32 fault_data1; /* gen8, gen9 */
516 u32 extra_instdone[I915_NUM_INSTDONE_REG];
517 u64 fence[I915_MAX_NUM_FENCES];
518 struct intel_overlay_error_state *overlay;
519 struct intel_display_error_state *display;
520 struct drm_i915_error_object *semaphore_obj;
522 struct drm_i915_error_ring {
524 /* Software tracked state */
527 enum intel_ring_hangcheck_action hangcheck_action;
530 /* our own tracking of ring head and tail */
534 u32 semaphore_seqno[I915_NUM_RINGS - 1];
553 u32 rc_psmi; /* sleep state */
554 u32 semaphore_mboxes[I915_NUM_RINGS - 1];
556 struct drm_i915_error_object {
560 } *ringbuffer, *batchbuffer, *wa_batchbuffer, *ctx, *hws_page;
562 struct drm_i915_error_request {
577 char comm[TASK_COMM_LEN];
578 } ring[I915_NUM_RINGS];
580 struct drm_i915_error_buffer {
583 u32 rseqno[I915_NUM_RINGS], wseqno;
587 s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
595 } **active_bo, **pinned_bo;
597 u32 *active_bo_count, *pinned_bo_count;
601 struct intel_connector;
602 struct intel_encoder;
603 struct intel_crtc_state;
604 struct intel_initial_plane_config;
609 struct drm_i915_display_funcs {
610 int (*get_display_clock_speed)(struct drm_device *dev);
611 int (*get_fifo_size)(struct drm_device *dev, int plane);
613 * find_dpll() - Find the best values for the PLL
614 * @limit: limits for the PLL
615 * @crtc: current CRTC
616 * @target: target frequency in kHz
617 * @refclk: reference clock frequency in kHz
618 * @match_clock: if provided, @best_clock P divider must
619 * match the P divider from @match_clock
620 * used for LVDS downclocking
621 * @best_clock: best PLL values found
623 * Returns true on success, false on failure.
625 bool (*find_dpll)(const struct intel_limit *limit,
626 struct intel_crtc_state *crtc_state,
627 int target, int refclk,
628 struct dpll *match_clock,
629 struct dpll *best_clock);
630 int (*compute_pipe_wm)(struct intel_crtc *crtc,
631 struct drm_atomic_state *state);
632 void (*update_wm)(struct drm_crtc *crtc);
633 int (*modeset_calc_cdclk)(struct drm_atomic_state *state);
634 void (*modeset_commit_cdclk)(struct drm_atomic_state *state);
635 /* Returns the active state of the crtc, and if the crtc is active,
636 * fills out the pipe-config with the hw state. */
637 bool (*get_pipe_config)(struct intel_crtc *,
638 struct intel_crtc_state *);
639 void (*get_initial_plane_config)(struct intel_crtc *,
640 struct intel_initial_plane_config *);
641 int (*crtc_compute_clock)(struct intel_crtc *crtc,
642 struct intel_crtc_state *crtc_state);
643 void (*crtc_enable)(struct drm_crtc *crtc);
644 void (*crtc_disable)(struct drm_crtc *crtc);
645 void (*audio_codec_enable)(struct drm_connector *connector,
646 struct intel_encoder *encoder,
647 const struct drm_display_mode *adjusted_mode);
648 void (*audio_codec_disable)(struct intel_encoder *encoder);
649 void (*fdi_link_train)(struct drm_crtc *crtc);
650 void (*init_clock_gating)(struct drm_device *dev);
651 int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
652 struct drm_framebuffer *fb,
653 struct drm_i915_gem_object *obj,
654 struct drm_i915_gem_request *req,
656 void (*update_primary_plane)(struct drm_crtc *crtc,
657 struct drm_framebuffer *fb,
659 void (*hpd_irq_setup)(struct drm_device *dev);
660 /* clock updates for mode set */
662 /* render clock increase/decrease */
663 /* display clock increase/decrease */
664 /* pll clock increase/decrease */
667 enum forcewake_domain_id {
668 FW_DOMAIN_ID_RENDER = 0,
669 FW_DOMAIN_ID_BLITTER,
675 enum forcewake_domains {
676 FORCEWAKE_RENDER = (1 << FW_DOMAIN_ID_RENDER),
677 FORCEWAKE_BLITTER = (1 << FW_DOMAIN_ID_BLITTER),
678 FORCEWAKE_MEDIA = (1 << FW_DOMAIN_ID_MEDIA),
679 FORCEWAKE_ALL = (FORCEWAKE_RENDER |
684 struct intel_uncore_funcs {
685 void (*force_wake_get)(struct drm_i915_private *dev_priv,
686 enum forcewake_domains domains);
687 void (*force_wake_put)(struct drm_i915_private *dev_priv,
688 enum forcewake_domains domains);
690 uint8_t (*mmio_readb)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
691 uint16_t (*mmio_readw)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
692 uint32_t (*mmio_readl)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
693 uint64_t (*mmio_readq)(struct drm_i915_private *dev_priv, off_t offset, bool trace);
695 void (*mmio_writeb)(struct drm_i915_private *dev_priv, off_t offset,
696 uint8_t val, bool trace);
697 void (*mmio_writew)(struct drm_i915_private *dev_priv, off_t offset,
698 uint16_t val, bool trace);
699 void (*mmio_writel)(struct drm_i915_private *dev_priv, off_t offset,
700 uint32_t val, bool trace);
701 void (*mmio_writeq)(struct drm_i915_private *dev_priv, off_t offset,
702 uint64_t val, bool trace);
705 struct intel_uncore {
706 spinlock_t lock; /** lock is also taken in irq contexts. */
708 struct intel_uncore_funcs funcs;
711 enum forcewake_domains fw_domains;
713 struct intel_uncore_forcewake_domain {
714 struct drm_i915_private *i915;
715 enum forcewake_domain_id id;
717 struct timer_list timer;
724 } fw_domain[FW_DOMAIN_ID_COUNT];
727 /* Iterate over initialised fw domains */
728 #define for_each_fw_domain_mask(domain__, mask__, dev_priv__, i__) \
729 for ((i__) = 0, (domain__) = &(dev_priv__)->uncore.fw_domain[0]; \
730 (i__) < FW_DOMAIN_ID_COUNT; \
731 (i__)++, (domain__) = &(dev_priv__)->uncore.fw_domain[i__]) \
732 if (((mask__) & (dev_priv__)->uncore.fw_domains) & (1 << (i__)))
734 #define for_each_fw_domain(domain__, dev_priv__, i__) \
735 for_each_fw_domain_mask(domain__, FORCEWAKE_ALL, dev_priv__, i__)
738 FW_UNINITIALIZED = 0,
745 uint32_t *dmc_payload;
746 uint32_t dmc_fw_size;
748 uint32_t mmioaddr[8];
749 uint32_t mmiodata[8];
750 enum csr_state state;
753 #define DEV_INFO_FOR_EACH_FLAG(func, sep) \
754 func(is_mobile) sep \
757 func(is_i945gm) sep \
759 func(need_gfx_hws) sep \
761 func(is_pineview) sep \
762 func(is_broadwater) sep \
763 func(is_crestline) sep \
764 func(is_ivybridge) sep \
765 func(is_valleyview) sep \
766 func(is_haswell) sep \
767 func(is_skylake) sep \
768 func(is_preliminary) sep \
770 func(has_pipe_cxsr) sep \
771 func(has_hotplug) sep \
772 func(cursor_needs_physical) sep \
773 func(has_overlay) sep \
774 func(overlay_needs_physical) sep \
775 func(supports_tv) sep \
780 #define DEFINE_FLAG(name) u8 name:1
781 #define SEP_SEMICOLON ;
783 struct intel_device_info {
784 u32 display_mmio_offset;
787 u8 num_sprites[I915_MAX_PIPES];
789 u8 ring_mask; /* Rings supported by the HW */
790 DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG, SEP_SEMICOLON);
791 /* Register offsets for the various display pipes and transcoders */
792 int pipe_offsets[I915_MAX_TRANSCODERS];
793 int trans_offsets[I915_MAX_TRANSCODERS];
794 int palette_offsets[I915_MAX_PIPES];
795 int cursor_offsets[I915_MAX_PIPES];
797 /* Slice/subslice/EU info */
800 u8 subslice_per_slice;
803 /* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
806 u8 has_subslice_pg:1;
813 enum i915_cache_level {
815 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
816 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
817 caches, eg sampler/render caches, and the
818 large Last-Level-Cache. LLC is coherent with
819 the CPU, but L3 is only visible to the GPU. */
820 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
823 struct i915_ctx_hang_stats {
824 /* This context had batch pending when hang was declared */
825 unsigned batch_pending;
827 /* This context had batch active when hang was declared */
828 unsigned batch_active;
830 /* Time when this context was last blamed for a GPU reset */
831 unsigned long guilty_ts;
833 /* If the contexts causes a second GPU hang within this time,
834 * it is permanently banned from submitting any more work.
836 unsigned long ban_period_seconds;
838 /* This context is banned to submit more work */
842 /* This must match up with the value previously used for execbuf2.rsvd1. */
843 #define DEFAULT_CONTEXT_HANDLE 0
845 #define CONTEXT_NO_ZEROMAP (1<<0)
847 * struct intel_context - as the name implies, represents a context.
848 * @ref: reference count.
849 * @user_handle: userspace tracking identity for this context.
850 * @remap_slice: l3 row remapping information.
851 * @flags: context specific flags:
852 * CONTEXT_NO_ZEROMAP: do not allow mapping things to page 0.
853 * @file_priv: filp associated with this context (NULL for global default
855 * @hang_stats: information about the role of this context in possible GPU
857 * @ppgtt: virtual memory space used by this context.
858 * @legacy_hw_ctx: render context backing object and whether it is correctly
859 * initialized (legacy ring submission mechanism only).
860 * @link: link in the global list of contexts.
862 * Contexts are memory images used by the hardware to store copies of their
865 struct intel_context {
869 struct drm_i915_private *i915;
871 struct drm_i915_file_private *file_priv;
872 struct i915_ctx_hang_stats hang_stats;
873 struct i915_hw_ppgtt *ppgtt;
875 /* Legacy ring buffer submission */
877 struct drm_i915_gem_object *rcs_state;
883 struct drm_i915_gem_object *state;
884 struct intel_ringbuffer *ringbuf;
886 } engine[I915_NUM_RINGS];
888 struct list_head link;
900 /* This is always the inner lock when overlapping with struct_mutex and
901 * it's the outer lock when overlapping with stolen_lock. */
903 unsigned long uncompressed_size;
906 unsigned int possible_framebuffer_bits;
907 unsigned int busy_bits;
908 struct intel_crtc *crtc;
911 struct drm_mm_node compressed_fb;
912 struct drm_mm_node *compressed_llb;
916 /* Tracks whether the HW is actually enabled, not whether the feature is
920 struct intel_fbc_work {
921 struct delayed_work work;
922 struct intel_crtc *crtc;
923 struct drm_framebuffer *fb;
927 FBC_OK, /* FBC is enabled */
928 FBC_UNSUPPORTED, /* FBC is not supported by this chipset */
929 FBC_NO_OUTPUT, /* no outputs enabled to compress */
930 FBC_STOLEN_TOO_SMALL, /* not enough space for buffers */
931 FBC_UNSUPPORTED_MODE, /* interlace or doublescanned mode */
932 FBC_MODE_TOO_LARGE, /* mode too large for compression */
933 FBC_BAD_PLANE, /* fbc not supported on plane */
934 FBC_NOT_TILED, /* buffer not tiled */
935 FBC_MULTIPLE_PIPES, /* more than one pipe active */
937 FBC_CHIP_DEFAULT, /* disabled by default on this chip */
938 FBC_ROTATION, /* rotation is not supported */
939 FBC_IN_DBG_MASTER, /* kernel debugger is active */
940 FBC_BAD_STRIDE, /* stride is not supported */
941 FBC_PIXEL_RATE, /* pixel rate is too big */
942 FBC_PIXEL_FORMAT /* pixel format is invalid */
945 bool (*fbc_enabled)(struct drm_i915_private *dev_priv);
946 void (*enable_fbc)(struct intel_crtc *crtc);
947 void (*disable_fbc)(struct drm_i915_private *dev_priv);
951 * HIGH_RR is the highest eDP panel refresh rate read from EDID
952 * LOW_RR is the lowest eDP panel refresh rate found from EDID
953 * parsing for same resolution.
955 enum drrs_refresh_rate_type {
958 DRRS_MAX_RR, /* RR count */
961 enum drrs_support_type {
962 DRRS_NOT_SUPPORTED = 0,
963 STATIC_DRRS_SUPPORT = 1,
964 SEAMLESS_DRRS_SUPPORT = 2
970 struct delayed_work work;
972 unsigned busy_frontbuffer_bits;
973 enum drrs_refresh_rate_type refresh_rate_type;
974 enum drrs_support_type type;
981 struct intel_dp *enabled;
983 struct delayed_work work;
984 unsigned busy_frontbuffer_bits;
990 PCH_NONE = 0, /* No PCH present */
991 PCH_IBX, /* Ibexpeak PCH */
992 PCH_CPT, /* Cougarpoint PCH */
993 PCH_LPT, /* Lynxpoint PCH */
994 PCH_SPT, /* Sunrisepoint PCH */
998 enum intel_sbi_destination {
1003 #define QUIRK_PIPEA_FORCE (1<<0)
1004 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
1005 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
1006 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
1007 #define QUIRK_PIPEB_FORCE (1<<4)
1008 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
1011 struct intel_fbc_work;
1013 struct intel_gmbus {
1014 struct i2c_adapter adapter;
1018 struct i2c_algo_bit_data bit_algo;
1019 struct drm_i915_private *dev_priv;
1022 struct i915_suspend_saved_registers {
1025 u32 savePP_ON_DELAYS;
1026 u32 savePP_OFF_DELAYS;
1031 u32 saveFBC_CONTROL;
1032 u32 saveCACHE_MODE_0;
1033 u32 saveMI_ARB_STATE;
1037 uint64_t saveFENCE[I915_MAX_NUM_FENCES];
1038 u32 savePCH_PORT_HOTPLUG;
1042 struct vlv_s0ix_state {
1049 u32 lra_limits[GEN7_LRA_LIMITS_REG_NUM];
1050 u32 media_max_req_count;
1051 u32 gfx_max_req_count;
1077 u32 rp_down_timeout;
1083 /* Display 1 CZ domain */
1088 u32 gt_scratch[GEN7_GT_SCRATCH_REG_NUM];
1090 /* GT SA CZ domain */
1097 /* Display 2 CZ domain */
1101 u32 clock_gate_dis2;
1104 struct intel_rps_ei {
1110 struct intel_gen6_power_mgmt {
1112 * work, interrupts_enabled and pm_iir are protected by
1113 * dev_priv->irq_lock
1115 struct work_struct work;
1116 bool interrupts_enabled;
1119 /* Frequencies are stored in potentially platform dependent multiples.
1120 * In other words, *_freq needs to be multiplied by X to be interesting.
1121 * Soft limits are those which are used for the dynamic reclocking done
1122 * by the driver (raise frequencies under heavy loads, and lower for
1123 * lighter loads). Hard limits are those imposed by the hardware.
1125 * A distinction is made for overclocking, which is never enabled by
1126 * default, and is considered to be above the hard limit if it's
1129 u8 cur_freq; /* Current frequency (cached, may not == HW) */
1130 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
1131 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
1132 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
1133 u8 min_freq; /* AKA RPn. Minimum frequency */
1134 u8 idle_freq; /* Frequency to request when we are idle */
1135 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
1136 u8 rp1_freq; /* "less than" RP0 power/freqency */
1137 u8 rp0_freq; /* Non-overclocked max frequency. */
1139 u8 up_threshold; /* Current %busy required to uplock */
1140 u8 down_threshold; /* Current %busy required to downclock */
1143 enum { LOW_POWER, BETWEEN, HIGH_POWER } power;
1145 spinlock_t client_lock;
1146 struct list_head clients;
1150 struct delayed_work delayed_resume_work;
1153 struct intel_rps_client semaphores, mmioflips;
1155 /* manual wa residency calculations */
1156 struct intel_rps_ei up_ei, down_ei;
1159 * Protects RPS/RC6 register access and PCU communication.
1160 * Must be taken after struct_mutex if nested. Note that
1161 * this lock may be held for long periods of time when
1162 * talking to hw - so only take it when talking to hw!
1164 struct mutex hw_lock;
1167 /* defined intel_pm.c */
1168 extern spinlock_t mchdev_lock;
1170 struct intel_ilk_power_mgmt {
1178 unsigned long last_time1;
1179 unsigned long chipset_power;
1182 unsigned long gfx_power;
1189 struct drm_i915_private;
1190 struct i915_power_well;
1192 struct i915_power_well_ops {
1194 * Synchronize the well's hw state to match the current sw state, for
1195 * example enable/disable it based on the current refcount. Called
1196 * during driver init and resume time, possibly after first calling
1197 * the enable/disable handlers.
1199 void (*sync_hw)(struct drm_i915_private *dev_priv,
1200 struct i915_power_well *power_well);
1202 * Enable the well and resources that depend on it (for example
1203 * interrupts located on the well). Called after the 0->1 refcount
1206 void (*enable)(struct drm_i915_private *dev_priv,
1207 struct i915_power_well *power_well);
1209 * Disable the well and resources that depend on it. Called after
1210 * the 1->0 refcount transition.
1212 void (*disable)(struct drm_i915_private *dev_priv,
1213 struct i915_power_well *power_well);
1214 /* Returns the hw enabled state. */
1215 bool (*is_enabled)(struct drm_i915_private *dev_priv,
1216 struct i915_power_well *power_well);
1219 /* Power well structure for haswell */
1220 struct i915_power_well {
1223 /* power well enable/disable usage count */
1225 /* cached hw enabled state */
1227 unsigned long domains;
1229 const struct i915_power_well_ops *ops;
1232 struct i915_power_domains {
1234 * Power wells needed for initialization at driver init and suspend
1235 * time are on. They are kept on until after the first modeset.
1239 int power_well_count;
1242 int domain_use_count[POWER_DOMAIN_NUM];
1243 struct i915_power_well *power_wells;
1246 #define MAX_L3_SLICES 2
1247 struct intel_l3_parity {
1248 u32 *remap_info[MAX_L3_SLICES];
1249 struct work_struct error_work;
1253 struct i915_gem_mm {
1254 /** Memory allocator for GTT stolen memory */
1255 struct drm_mm stolen;
1256 /** Protects the usage of the GTT stolen memory allocator. This is
1257 * always the inner lock when overlapping with struct_mutex. */
1258 struct mutex stolen_lock;
1260 /** List of all objects in gtt_space. Used to restore gtt
1261 * mappings on resume */
1262 struct list_head bound_list;
1264 * List of objects which are not bound to the GTT (thus
1265 * are idle and not used by the GPU) but still have
1266 * (presumably uncached) pages still attached.
1268 struct list_head unbound_list;
1270 /** Usable portion of the GTT for GEM */
1271 unsigned long stolen_base; /* limited to low memory (32-bit) */
1273 /** PPGTT used for aliasing the PPGTT with the GTT */
1274 struct i915_hw_ppgtt *aliasing_ppgtt;
1276 struct notifier_block oom_notifier;
1277 struct shrinker shrinker;
1278 bool shrinker_no_lock_stealing;
1280 /** LRU list of objects with fence regs on them. */
1281 struct list_head fence_list;
1284 * We leave the user IRQ off as much as possible,
1285 * but this means that requests will finish and never
1286 * be retired once the system goes idle. Set a timer to
1287 * fire periodically while the ring is running. When it
1288 * fires, go retire requests.
1290 struct delayed_work retire_work;
1293 * When we detect an idle GPU, we want to turn on
1294 * powersaving features. So once we see that there
1295 * are no more requests outstanding and no more
1296 * arrive within a small period of time, we fire
1297 * off the idle_work.
1299 struct delayed_work idle_work;
1302 * Are we in a non-interruptible section of code like
1308 * Is the GPU currently considered idle, or busy executing userspace
1309 * requests? Whilst idle, we attempt to power down the hardware and
1310 * display clocks. In order to reduce the effect on performance, there
1311 * is a slight delay before we do so.
1315 /* the indicator for dispatch video commands on two BSD rings */
1316 int bsd_ring_dispatch_index;
1318 /** Bit 6 swizzling required for X tiling */
1319 uint32_t bit_6_swizzle_x;
1320 /** Bit 6 swizzling required for Y tiling */
1321 uint32_t bit_6_swizzle_y;
1323 /* accounting, useful for userland debugging */
1324 spinlock_t object_stat_lock;
1325 size_t object_memory;
1329 struct drm_i915_error_state_buf {
1330 struct drm_i915_private *i915;
1339 struct i915_error_state_file_priv {
1340 struct drm_device *dev;
1341 struct drm_i915_error_state *error;
1344 struct i915_gpu_error {
1345 /* For hangcheck timer */
1346 #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */
1347 #define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)
1348 /* Hang gpu twice in this window and your context gets banned */
1349 #define DRM_I915_CTX_BAN_PERIOD DIV_ROUND_UP(8*DRM_I915_HANGCHECK_PERIOD, 1000)
1351 struct workqueue_struct *hangcheck_wq;
1352 struct delayed_work hangcheck_work;
1354 /* For reset and error_state handling. */
1356 /* Protected by the above dev->gpu_error.lock. */
1357 struct drm_i915_error_state *first_error;
1359 unsigned long missed_irq_rings;
1362 * State variable controlling the reset flow and count
1364 * This is a counter which gets incremented when reset is triggered,
1365 * and again when reset has been handled. So odd values (lowest bit set)
1366 * means that reset is in progress and even values that
1367 * (reset_counter >> 1):th reset was successfully completed.
1369 * If reset is not completed succesfully, the I915_WEDGE bit is
1370 * set meaning that hardware is terminally sour and there is no
1371 * recovery. All waiters on the reset_queue will be woken when
1374 * This counter is used by the wait_seqno code to notice that reset
1375 * event happened and it needs to restart the entire ioctl (since most
1376 * likely the seqno it waited for won't ever signal anytime soon).
1378 * This is important for lock-free wait paths, where no contended lock
1379 * naturally enforces the correct ordering between the bail-out of the
1380 * waiter and the gpu reset work code.
1382 atomic_t reset_counter;
1384 #define I915_RESET_IN_PROGRESS_FLAG 1
1385 #define I915_WEDGED (1 << 31)
1388 * Waitqueue to signal when the reset has completed. Used by clients
1389 * that wait for dev_priv->mm.wedged to settle.
1391 wait_queue_head_t reset_queue;
1393 /* Userspace knobs for gpu hang simulation;
1394 * combines both a ring mask, and extra flags
1397 #define I915_STOP_RING_ALLOW_BAN (1 << 31)
1398 #define I915_STOP_RING_ALLOW_WARN (1 << 30)
1400 /* For missed irq/seqno simulation. */
1401 unsigned int test_irq_rings;
1403 /* Used to prevent gem_check_wedged returning -EAGAIN during gpu reset */
1404 bool reload_in_reset;
1407 enum modeset_restore {
1408 MODESET_ON_LID_OPEN,
1413 #define DP_AUX_A 0x40
1414 #define DP_AUX_B 0x10
1415 #define DP_AUX_C 0x20
1416 #define DP_AUX_D 0x30
1418 #define DDC_PIN_B 0x05
1419 #define DDC_PIN_C 0x04
1420 #define DDC_PIN_D 0x06
1422 struct ddi_vbt_port_info {
1424 * This is an index in the HDMI/DVI DDI buffer translation table.
1425 * The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
1426 * populate this field.
1428 #define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
1429 uint8_t hdmi_level_shift;
1431 uint8_t supports_dvi:1;
1432 uint8_t supports_hdmi:1;
1433 uint8_t supports_dp:1;
1435 uint8_t alternate_aux_channel;
1436 uint8_t alternate_ddc_pin;
1438 uint8_t dp_boost_level;
1439 uint8_t hdmi_boost_level;
1442 enum psr_lines_to_wait {
1443 PSR_0_LINES_TO_WAIT = 0,
1445 PSR_4_LINES_TO_WAIT,
1449 struct intel_vbt_data {
1450 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
1451 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
1454 unsigned int int_tv_support:1;
1455 unsigned int lvds_dither:1;
1456 unsigned int lvds_vbt:1;
1457 unsigned int int_crt_support:1;
1458 unsigned int lvds_use_ssc:1;
1459 unsigned int display_clock_mode:1;
1460 unsigned int fdi_rx_polarity_inverted:1;
1461 unsigned int has_mipi:1;
1463 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
1465 enum drrs_support_type drrs_type;
1470 int edp_preemphasis;
1472 bool edp_initialized;
1475 struct edp_power_seq edp_pps;
1479 bool require_aux_wakeup;
1481 enum psr_lines_to_wait lines_to_wait;
1482 int tp1_wakeup_time;
1483 int tp2_tp3_wakeup_time;
1489 bool active_low_pwm;
1490 u8 min_brightness; /* min_brightness/255 of max */
1497 struct mipi_config *config;
1498 struct mipi_pps_data *pps;
1502 u8 *sequence[MIPI_SEQ_MAX];
1508 union child_device_config *child_dev;
1510 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
1513 enum intel_ddb_partitioning {
1515 INTEL_DDB_PART_5_6, /* IVB+ */
1518 struct intel_wm_level {
1526 struct ilk_wm_values {
1527 uint32_t wm_pipe[3];
1529 uint32_t wm_lp_spr[3];
1530 uint32_t wm_linetime[3];
1532 enum intel_ddb_partitioning partitioning;
1535 struct vlv_pipe_wm {
1546 struct vlv_wm_values {
1547 struct vlv_pipe_wm pipe[3];
1548 struct vlv_sr_wm sr;
1558 struct skl_ddb_entry {
1559 uint16_t start, end; /* in number of blocks, 'end' is exclusive */
1562 static inline uint16_t skl_ddb_entry_size(const struct skl_ddb_entry *entry)
1564 return entry->end - entry->start;
1567 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
1568 const struct skl_ddb_entry *e2)
1570 if (e1->start == e2->start && e1->end == e2->end)
1576 struct skl_ddb_allocation {
1577 struct skl_ddb_entry pipe[I915_MAX_PIPES];
1578 struct skl_ddb_entry plane[I915_MAX_PIPES][I915_MAX_PLANES]; /* packed/uv */
1579 struct skl_ddb_entry y_plane[I915_MAX_PIPES][I915_MAX_PLANES];
1582 struct skl_wm_values {
1583 bool dirty[I915_MAX_PIPES];
1584 struct skl_ddb_allocation ddb;
1585 uint32_t wm_linetime[I915_MAX_PIPES];
1586 uint32_t plane[I915_MAX_PIPES][I915_MAX_PLANES][8];
1587 uint32_t plane_trans[I915_MAX_PIPES][I915_MAX_PLANES];
1590 struct skl_wm_level {
1591 bool plane_en[I915_MAX_PLANES];
1592 uint16_t plane_res_b[I915_MAX_PLANES];
1593 uint8_t plane_res_l[I915_MAX_PLANES];
1597 * This struct helps tracking the state needed for runtime PM, which puts the
1598 * device in PCI D3 state. Notice that when this happens, nothing on the
1599 * graphics device works, even register access, so we don't get interrupts nor
1602 * Every piece of our code that needs to actually touch the hardware needs to
1603 * either call intel_runtime_pm_get or call intel_display_power_get with the
1604 * appropriate power domain.
1606 * Our driver uses the autosuspend delay feature, which means we'll only really
1607 * suspend if we stay with zero refcount for a certain amount of time. The
1608 * default value is currently very conservative (see intel_runtime_pm_enable), but
1609 * it can be changed with the standard runtime PM files from sysfs.
1611 * The irqs_disabled variable becomes true exactly after we disable the IRQs and
1612 * goes back to false exactly before we reenable the IRQs. We use this variable
1613 * to check if someone is trying to enable/disable IRQs while they're supposed
1614 * to be disabled. This shouldn't happen and we'll print some error messages in
1617 * For more, read the Documentation/power/runtime_pm.txt.
1619 struct i915_runtime_pm {
1624 enum intel_pipe_crc_source {
1625 INTEL_PIPE_CRC_SOURCE_NONE,
1626 INTEL_PIPE_CRC_SOURCE_PLANE1,
1627 INTEL_PIPE_CRC_SOURCE_PLANE2,
1628 INTEL_PIPE_CRC_SOURCE_PF,
1629 INTEL_PIPE_CRC_SOURCE_PIPE,
1630 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
1631 INTEL_PIPE_CRC_SOURCE_TV,
1632 INTEL_PIPE_CRC_SOURCE_DP_B,
1633 INTEL_PIPE_CRC_SOURCE_DP_C,
1634 INTEL_PIPE_CRC_SOURCE_DP_D,
1635 INTEL_PIPE_CRC_SOURCE_AUTO,
1636 INTEL_PIPE_CRC_SOURCE_MAX,
1639 struct intel_pipe_crc_entry {
1644 #define INTEL_PIPE_CRC_ENTRIES_NR 128
1645 struct intel_pipe_crc {
1647 bool opened; /* exclusive access to the result file */
1648 struct intel_pipe_crc_entry *entries;
1649 enum intel_pipe_crc_source source;
1651 wait_queue_head_t wq;
1654 struct i915_frontbuffer_tracking {
1658 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
1665 struct i915_wa_reg {
1668 /* bitmask representing WA bits */
1672 #define I915_MAX_WA_REGS 16
1674 struct i915_workarounds {
1675 struct i915_wa_reg reg[I915_MAX_WA_REGS];
1679 struct i915_virtual_gpu {
1683 struct i915_execbuffer_params {
1684 struct drm_device *dev;
1685 struct drm_file *file;
1686 uint32_t dispatch_flags;
1687 uint32_t args_batch_start_offset;
1688 uint64_t batch_obj_vm_offset;
1689 struct intel_engine_cs *ring;
1690 struct drm_i915_gem_object *batch_obj;
1691 struct intel_context *ctx;
1692 struct drm_i915_gem_request *request;
1695 /* used in computing the new watermarks state */
1696 struct intel_wm_config {
1697 unsigned int num_pipes_active;
1698 bool sprites_enabled;
1699 bool sprites_scaled;
1702 struct drm_i915_private {
1703 struct drm_device *dev;
1704 struct kmem_cache *objects;
1705 struct kmem_cache *vmas;
1706 struct kmem_cache *requests;
1708 const struct intel_device_info info;
1710 int relative_constants_mode;
1714 struct intel_uncore uncore;
1716 struct i915_virtual_gpu vgpu;
1718 struct intel_guc guc;
1720 struct intel_csr csr;
1722 /* Display CSR-related protection */
1723 struct mutex csr_lock;
1725 struct intel_gmbus gmbus[GMBUS_NUM_PINS];
1727 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1728 * controller on different i2c buses. */
1729 struct mutex gmbus_mutex;
1732 * Base address of the gmbus and gpio block.
1734 uint32_t gpio_mmio_base;
1736 /* MMIO base address for MIPI regs */
1737 uint32_t mipi_mmio_base;
1739 wait_queue_head_t gmbus_wait_queue;
1741 struct pci_dev *bridge_dev;
1742 struct intel_engine_cs ring[I915_NUM_RINGS];
1743 struct drm_i915_gem_object *semaphore_obj;
1744 uint32_t last_seqno, next_seqno;
1746 struct drm_dma_handle *status_page_dmah;
1747 struct resource mch_res;
1749 /* protects the irq masks */
1750 spinlock_t irq_lock;
1752 /* protects the mmio flip data */
1753 spinlock_t mmio_flip_lock;
1755 bool display_irqs_enabled;
1757 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1758 struct pm_qos_request pm_qos;
1760 /* Sideband mailbox protection */
1761 struct mutex sb_lock;
1763 /** Cached value of IMR to avoid reads in updating the bitfield */
1766 u32 de_irq_mask[I915_MAX_PIPES];
1771 u32 pipestat_irq_mask[I915_MAX_PIPES];
1773 struct i915_hotplug hotplug;
1774 struct i915_fbc fbc;
1775 struct i915_drrs drrs;
1776 struct intel_opregion opregion;
1777 struct intel_vbt_data vbt;
1779 bool preserve_bios_swizzle;
1782 struct intel_overlay *overlay;
1784 /* backlight registers and fields in struct intel_panel */
1785 struct mutex backlight_lock;
1788 bool no_aux_handshake;
1790 /* protects panel power sequencer state */
1791 struct mutex pps_mutex;
1793 struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
1794 int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
1795 int num_fence_regs; /* 8 on pre-965, 16 otherwise */
1797 unsigned int fsb_freq, mem_freq, is_ddr3;
1798 unsigned int skl_boot_cdclk;
1799 unsigned int cdclk_freq, max_cdclk_freq;
1800 unsigned int max_dotclk_freq;
1801 unsigned int hpll_freq;
1802 unsigned int czclk_freq;
1805 * wq - Driver workqueue for GEM.
1807 * NOTE: Work items scheduled here are not allowed to grab any modeset
1808 * locks, for otherwise the flushing done in the pageflip code will
1809 * result in deadlocks.
1811 struct workqueue_struct *wq;
1813 /* Display functions */
1814 struct drm_i915_display_funcs display;
1816 /* PCH chipset type */
1817 enum intel_pch pch_type;
1818 unsigned short pch_id;
1820 unsigned long quirks;
1822 enum modeset_restore modeset_restore;
1823 struct mutex modeset_restore_lock;
1825 struct list_head vm_list; /* Global list of all address spaces */
1826 struct i915_gtt gtt; /* VM representing the global address space */
1828 struct i915_gem_mm mm;
1829 DECLARE_HASHTABLE(mm_structs, 7);
1830 struct mutex mm_lock;
1832 /* Kernel Modesetting */
1834 struct sdvo_device_mapping sdvo_mappings[2];
1836 struct drm_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1837 struct drm_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1838 wait_queue_head_t pending_flip_queue;
1840 #ifdef CONFIG_DEBUG_FS
1841 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1844 int num_shared_dpll;
1845 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1846 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1848 struct i915_workarounds workarounds;
1850 /* Reclocking support */
1851 bool render_reclock_avail;
1853 struct i915_frontbuffer_tracking fb_tracking;
1857 bool mchbar_need_disable;
1859 struct intel_l3_parity l3_parity;
1861 /* Cannot be determined by PCIID. You must always read a register. */
1864 /* gen6+ rps state */
1865 struct intel_gen6_power_mgmt rps;
1867 /* ilk-only ips/rps state. Everything in here is protected by the global
1868 * mchdev_lock in intel_pm.c */
1869 struct intel_ilk_power_mgmt ips;
1871 struct i915_power_domains power_domains;
1873 struct i915_psr psr;
1875 struct i915_gpu_error gpu_error;
1877 struct drm_i915_gem_object *vlv_pctx;
1879 #ifdef CONFIG_DRM_FBDEV_EMULATION
1880 /* list of fbdev register on this device */
1881 struct intel_fbdev *fbdev;
1882 struct work_struct fbdev_suspend_work;
1885 struct drm_property *broadcast_rgb_property;
1886 struct drm_property *force_audio_property;
1888 /* hda/i915 audio component */
1889 struct i915_audio_component *audio_component;
1890 bool audio_component_registered;
1892 * av_mutex - mutex for audio/video sync
1895 struct mutex av_mutex;
1897 uint32_t hw_context_size;
1898 struct list_head context_list;
1902 u32 chv_phy_control;
1905 struct i915_suspend_saved_registers regfile;
1906 struct vlv_s0ix_state vlv_s0ix_state;
1910 * Raw watermark latency values:
1911 * in 0.1us units for WM0,
1912 * in 0.5us units for WM1+.
1915 uint16_t pri_latency[5];
1917 uint16_t spr_latency[5];
1919 uint16_t cur_latency[5];
1921 * Raw watermark memory latency values
1922 * for SKL for all 8 levels
1925 uint16_t skl_latency[8];
1927 /* Committed wm config */
1928 struct intel_wm_config config;
1931 * The skl_wm_values structure is a bit too big for stack
1932 * allocation, so we keep the staging struct where we store
1933 * intermediate results here instead.
1935 struct skl_wm_values skl_results;
1937 /* current hardware state */
1939 struct ilk_wm_values hw;
1940 struct skl_wm_values skl_hw;
1941 struct vlv_wm_values vlv;
1947 struct i915_runtime_pm pm;
1949 /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
1951 int (*execbuf_submit)(struct i915_execbuffer_params *params,
1952 struct drm_i915_gem_execbuffer2 *args,
1953 struct list_head *vmas);
1954 int (*init_rings)(struct drm_device *dev);
1955 void (*cleanup_ring)(struct intel_engine_cs *ring);
1956 void (*stop_ring)(struct intel_engine_cs *ring);
1959 bool edp_low_vswing;
1961 /* perform PHY state sanity checks? */
1962 bool chv_phy_assert[2];
1965 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
1966 * will be rejected. Instead look for a better place.
1970 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
1972 return dev->dev_private;
1975 static inline struct drm_i915_private *dev_to_i915(struct device *dev)
1977 return to_i915(dev_get_drvdata(dev));
1980 static inline struct drm_i915_private *guc_to_i915(struct intel_guc *guc)
1982 return container_of(guc, struct drm_i915_private, guc);
1985 /* Iterate over initialised rings */
1986 #define for_each_ring(ring__, dev_priv__, i__) \
1987 for ((i__) = 0; (i__) < I915_NUM_RINGS; (i__)++) \
1988 if (((ring__) = &(dev_priv__)->ring[(i__)]), intel_ring_initialized((ring__)))
1990 enum hdmi_force_audio {
1991 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
1992 HDMI_AUDIO_OFF, /* force turn off HDMI audio */
1993 HDMI_AUDIO_AUTO, /* trust EDID */
1994 HDMI_AUDIO_ON, /* force turn on HDMI audio */
1997 #define I915_GTT_OFFSET_NONE ((u32)-1)
1999 struct drm_i915_gem_object_ops {
2000 /* Interface between the GEM object and its backing storage.
2001 * get_pages() is called once prior to the use of the associated set
2002 * of pages before to binding them into the GTT, and put_pages() is
2003 * called after we no longer need them. As we expect there to be
2004 * associated cost with migrating pages between the backing storage
2005 * and making them available for the GPU (e.g. clflush), we may hold
2006 * onto the pages after they are no longer referenced by the GPU
2007 * in case they may be used again shortly (for example migrating the
2008 * pages to a different memory domain within the GTT). put_pages()
2009 * will therefore most likely be called when the object itself is
2010 * being released or under memory pressure (where we attempt to
2011 * reap pages for the shrinker).
2013 int (*get_pages)(struct drm_i915_gem_object *);
2014 void (*put_pages)(struct drm_i915_gem_object *);
2015 int (*dmabuf_export)(struct drm_i915_gem_object *);
2016 void (*release)(struct drm_i915_gem_object *);
2020 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
2021 * considered to be the frontbuffer for the given plane interface-wise. This
2022 * doesn't mean that the hw necessarily already scans it out, but that any
2023 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
2025 * We have one bit per pipe and per scanout plane type.
2027 #define INTEL_MAX_SPRITE_BITS_PER_PIPE 5
2028 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
2029 #define INTEL_FRONTBUFFER_BITS \
2030 (INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES)
2031 #define INTEL_FRONTBUFFER_PRIMARY(pipe) \
2032 (1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
2033 #define INTEL_FRONTBUFFER_CURSOR(pipe) \
2034 (1 << (1 + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
2035 #define INTEL_FRONTBUFFER_SPRITE(pipe, plane) \
2036 (1 << (2 + plane + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
2037 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
2038 (1 << (2 + INTEL_MAX_SPRITE_BITS_PER_PIPE + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
2039 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
2040 (0xff << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
2042 struct drm_i915_gem_object {
2043 struct drm_gem_object base;
2045 const struct drm_i915_gem_object_ops *ops;
2047 /** List of VMAs backed by this object */
2048 struct list_head vma_list;
2050 /** Stolen memory for this object, instead of being backed by shmem. */
2051 struct drm_mm_node *stolen;
2052 struct list_head global_list;
2054 struct list_head ring_list[I915_NUM_RINGS];
2055 /** Used in execbuf to temporarily hold a ref */
2056 struct list_head obj_exec_link;
2058 struct list_head batch_pool_link;
2061 * This is set if the object is on the active lists (has pending
2062 * rendering and so a non-zero seqno), and is not set if it i s on
2063 * inactive (ready to be unbound) list.
2065 unsigned int active:I915_NUM_RINGS;
2068 * This is set if the object has been written to since last bound
2071 unsigned int dirty:1;
2074 * Fence register bits (if any) for this object. Will be set
2075 * as needed when mapped into the GTT.
2076 * Protected by dev->struct_mutex.
2078 signed int fence_reg:I915_MAX_NUM_FENCE_BITS;
2081 * Advice: are the backing pages purgeable?
2083 unsigned int madv:2;
2086 * Current tiling mode for the object.
2088 unsigned int tiling_mode:2;
2090 * Whether the tiling parameters for the currently associated fence
2091 * register have changed. Note that for the purposes of tracking
2092 * tiling changes we also treat the unfenced register, the register
2093 * slot that the object occupies whilst it executes a fenced
2094 * command (such as BLT on gen2/3), as a "fence".
2096 unsigned int fence_dirty:1;
2099 * Is the object at the current location in the gtt mappable and
2100 * fenceable? Used to avoid costly recalculations.
2102 unsigned int map_and_fenceable:1;
2105 * Whether the current gtt mapping needs to be mappable (and isn't just
2106 * mappable by accident). Track pin and fault separate for a more
2107 * accurate mappable working set.
2109 unsigned int fault_mappable:1;
2112 * Is the object to be mapped as read-only to the GPU
2113 * Only honoured if hardware has relevant pte bit
2115 unsigned long gt_ro:1;
2116 unsigned int cache_level:3;
2117 unsigned int cache_dirty:1;
2119 unsigned int frontbuffer_bits:INTEL_FRONTBUFFER_BITS;
2121 unsigned int pin_display;
2123 struct sg_table *pages;
2124 int pages_pin_count;
2126 struct scatterlist *sg;
2130 /* prime dma-buf support */
2131 void *dma_buf_vmapping;
2134 /** Breadcrumb of last rendering to the buffer.
2135 * There can only be one writer, but we allow for multiple readers.
2136 * If there is a writer that necessarily implies that all other
2137 * read requests are complete - but we may only be lazily clearing
2138 * the read requests. A read request is naturally the most recent
2139 * request on a ring, so we may have two different write and read
2140 * requests on one ring where the write request is older than the
2141 * read request. This allows for the CPU to read from an active
2142 * buffer by only waiting for the write to complete.
2144 struct drm_i915_gem_request *last_read_req[I915_NUM_RINGS];
2145 struct drm_i915_gem_request *last_write_req;
2146 /** Breadcrumb of last fenced GPU access to the buffer. */
2147 struct drm_i915_gem_request *last_fenced_req;
2149 /** Current tiling stride for the object, if it's tiled. */
2152 /** References from framebuffers, locks out tiling changes. */
2153 unsigned long framebuffer_references;
2155 /** Record of address bit 17 of each page at last unbind. */
2156 unsigned long *bit_17;
2159 /** for phy allocated objects */
2160 struct drm_dma_handle *phys_handle;
2162 struct i915_gem_userptr {
2164 unsigned read_only :1;
2165 unsigned workers :4;
2166 #define I915_GEM_USERPTR_MAX_WORKERS 15
2168 struct i915_mm_struct *mm;
2169 struct i915_mmu_object *mmu_object;
2170 struct work_struct *work;
2174 #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base)
2176 void i915_gem_track_fb(struct drm_i915_gem_object *old,
2177 struct drm_i915_gem_object *new,
2178 unsigned frontbuffer_bits);
2181 * Request queue structure.
2183 * The request queue allows us to note sequence numbers that have been emitted
2184 * and may be associated with active buffers to be retired.
2186 * By keeping this list, we can avoid having to do questionable sequence
2187 * number comparisons on buffer last_read|write_seqno. It also allows an
2188 * emission time to be associated with the request for tracking how far ahead
2189 * of the GPU the submission is.
2191 * The requests are reference counted, so upon creation they should have an
2192 * initial reference taken using kref_init
2194 struct drm_i915_gem_request {
2197 /** On Which ring this request was generated */
2198 struct drm_i915_private *i915;
2199 struct intel_engine_cs *ring;
2201 /** GEM sequence number associated with this request. */
2204 /** Position in the ringbuffer of the start of the request */
2208 * Position in the ringbuffer of the start of the postfix.
2209 * This is required to calculate the maximum available ringbuffer
2210 * space without overwriting the postfix.
2214 /** Position in the ringbuffer of the end of the whole request */
2218 * Context and ring buffer related to this request
2219 * Contexts are refcounted, so when this request is associated with a
2220 * context, we must increment the context's refcount, to guarantee that
2221 * it persists while any request is linked to it. Requests themselves
2222 * are also refcounted, so the request will only be freed when the last
2223 * reference to it is dismissed, and the code in
2224 * i915_gem_request_free() will then decrement the refcount on the
2227 struct intel_context *ctx;
2228 struct intel_ringbuffer *ringbuf;
2230 /** Batch buffer related to this request if any (used for
2231 error state dump only) */
2232 struct drm_i915_gem_object *batch_obj;
2234 /** Time at which this request was emitted, in jiffies. */
2235 unsigned long emitted_jiffies;
2237 /** global list entry for this request */
2238 struct list_head list;
2240 struct drm_i915_file_private *file_priv;
2241 /** file_priv list entry for this request */
2242 struct list_head client_list;
2244 /** process identifier submitting this request */
2248 * The ELSP only accepts two elements at a time, so we queue
2249 * context/tail pairs on a given queue (ring->execlist_queue) until the
2250 * hardware is available. The queue serves a double purpose: we also use
2251 * it to keep track of the up to 2 contexts currently in the hardware
2252 * (usually one in execution and the other queued up by the GPU): We
2253 * only remove elements from the head of the queue when the hardware
2254 * informs us that an element has been completed.
2256 * All accesses to the queue are mediated by a spinlock
2257 * (ring->execlist_lock).
2260 /** Execlist link in the submission queue.*/
2261 struct list_head execlist_link;
2263 /** Execlists no. of times this request has been sent to the ELSP */
2268 int i915_gem_request_alloc(struct intel_engine_cs *ring,
2269 struct intel_context *ctx,
2270 struct drm_i915_gem_request **req_out);
2271 void i915_gem_request_cancel(struct drm_i915_gem_request *req);
2272 void i915_gem_request_free(struct kref *req_ref);
2273 int i915_gem_request_add_to_client(struct drm_i915_gem_request *req,
2274 struct drm_file *file);
2276 static inline uint32_t
2277 i915_gem_request_get_seqno(struct drm_i915_gem_request *req)
2279 return req ? req->seqno : 0;
2282 static inline struct intel_engine_cs *
2283 i915_gem_request_get_ring(struct drm_i915_gem_request *req)
2285 return req ? req->ring : NULL;
2288 static inline struct drm_i915_gem_request *
2289 i915_gem_request_reference(struct drm_i915_gem_request *req)
2292 kref_get(&req->ref);
2297 i915_gem_request_unreference(struct drm_i915_gem_request *req)
2299 WARN_ON(!mutex_is_locked(&req->ring->dev->struct_mutex));
2300 kref_put(&req->ref, i915_gem_request_free);
2304 i915_gem_request_unreference__unlocked(struct drm_i915_gem_request *req)
2306 struct drm_device *dev;
2311 dev = req->ring->dev;
2312 if (kref_put_mutex(&req->ref, i915_gem_request_free, &dev->struct_mutex))
2313 mutex_unlock(&dev->struct_mutex);
2316 static inline void i915_gem_request_assign(struct drm_i915_gem_request **pdst,
2317 struct drm_i915_gem_request *src)
2320 i915_gem_request_reference(src);
2323 i915_gem_request_unreference(*pdst);
2329 * XXX: i915_gem_request_completed should be here but currently needs the
2330 * definition of i915_seqno_passed() which is below. It will be moved in
2331 * a later patch when the call to i915_seqno_passed() is obsoleted...
2335 * A command that requires special handling by the command parser.
2337 struct drm_i915_cmd_descriptor {
2339 * Flags describing how the command parser processes the command.
2341 * CMD_DESC_FIXED: The command has a fixed length if this is set,
2342 * a length mask if not set
2343 * CMD_DESC_SKIP: The command is allowed but does not follow the
2344 * standard length encoding for the opcode range in
2346 * CMD_DESC_REJECT: The command is never allowed
2347 * CMD_DESC_REGISTER: The command should be checked against the
2348 * register whitelist for the appropriate ring
2349 * CMD_DESC_MASTER: The command is allowed if the submitting process
2353 #define CMD_DESC_FIXED (1<<0)
2354 #define CMD_DESC_SKIP (1<<1)
2355 #define CMD_DESC_REJECT (1<<2)
2356 #define CMD_DESC_REGISTER (1<<3)
2357 #define CMD_DESC_BITMASK (1<<4)
2358 #define CMD_DESC_MASTER (1<<5)
2361 * The command's unique identification bits and the bitmask to get them.
2362 * This isn't strictly the opcode field as defined in the spec and may
2363 * also include type, subtype, and/or subop fields.
2371 * The command's length. The command is either fixed length (i.e. does
2372 * not include a length field) or has a length field mask. The flag
2373 * CMD_DESC_FIXED indicates a fixed length. Otherwise, the command has
2374 * a length mask. All command entries in a command table must include
2375 * length information.
2383 * Describes where to find a register address in the command to check
2384 * against the ring's register whitelist. Only valid if flags has the
2385 * CMD_DESC_REGISTER bit set.
2387 * A non-zero step value implies that the command may access multiple
2388 * registers in sequence (e.g. LRI), in that case step gives the
2389 * distance in dwords between individual offset fields.
2397 #define MAX_CMD_DESC_BITMASKS 3
2399 * Describes command checks where a particular dword is masked and
2400 * compared against an expected value. If the command does not match
2401 * the expected value, the parser rejects it. Only valid if flags has
2402 * the CMD_DESC_BITMASK bit set. Only entries where mask is non-zero
2405 * If the check specifies a non-zero condition_mask then the parser
2406 * only performs the check when the bits specified by condition_mask
2413 u32 condition_offset;
2415 } bits[MAX_CMD_DESC_BITMASKS];
2419 * A table of commands requiring special handling by the command parser.
2421 * Each ring has an array of tables. Each table consists of an array of command
2422 * descriptors, which must be sorted with command opcodes in ascending order.
2424 struct drm_i915_cmd_table {
2425 const struct drm_i915_cmd_descriptor *table;
2429 /* Note that the (struct drm_i915_private *) cast is just to shut up gcc. */
2430 #define __I915__(p) ({ \
2431 struct drm_i915_private *__p; \
2432 if (__builtin_types_compatible_p(typeof(*p), struct drm_i915_private)) \
2433 __p = (struct drm_i915_private *)p; \
2434 else if (__builtin_types_compatible_p(typeof(*p), struct drm_device)) \
2435 __p = to_i915((struct drm_device *)p); \
2440 #define INTEL_INFO(p) (&__I915__(p)->info)
2441 #define INTEL_DEVID(p) (INTEL_INFO(p)->device_id)
2442 #define INTEL_REVID(p) (__I915__(p)->dev->pdev->revision)
2444 #define IS_I830(dev) (INTEL_DEVID(dev) == 0x3577)
2445 #define IS_845G(dev) (INTEL_DEVID(dev) == 0x2562)
2446 #define IS_I85X(dev) (INTEL_INFO(dev)->is_i85x)
2447 #define IS_I865G(dev) (INTEL_DEVID(dev) == 0x2572)
2448 #define IS_I915G(dev) (INTEL_INFO(dev)->is_i915g)
2449 #define IS_I915GM(dev) (INTEL_DEVID(dev) == 0x2592)
2450 #define IS_I945G(dev) (INTEL_DEVID(dev) == 0x2772)
2451 #define IS_I945GM(dev) (INTEL_INFO(dev)->is_i945gm)
2452 #define IS_BROADWATER(dev) (INTEL_INFO(dev)->is_broadwater)
2453 #define IS_CRESTLINE(dev) (INTEL_INFO(dev)->is_crestline)
2454 #define IS_GM45(dev) (INTEL_DEVID(dev) == 0x2A42)
2455 #define IS_G4X(dev) (INTEL_INFO(dev)->is_g4x)
2456 #define IS_PINEVIEW_G(dev) (INTEL_DEVID(dev) == 0xa001)
2457 #define IS_PINEVIEW_M(dev) (INTEL_DEVID(dev) == 0xa011)
2458 #define IS_PINEVIEW(dev) (INTEL_INFO(dev)->is_pineview)
2459 #define IS_G33(dev) (INTEL_INFO(dev)->is_g33)
2460 #define IS_IRONLAKE_M(dev) (INTEL_DEVID(dev) == 0x0046)
2461 #define IS_IVYBRIDGE(dev) (INTEL_INFO(dev)->is_ivybridge)
2462 #define IS_IVB_GT1(dev) (INTEL_DEVID(dev) == 0x0156 || \
2463 INTEL_DEVID(dev) == 0x0152 || \
2464 INTEL_DEVID(dev) == 0x015a)
2465 #define IS_VALLEYVIEW(dev) (INTEL_INFO(dev)->is_valleyview)
2466 #define IS_CHERRYVIEW(dev) (INTEL_INFO(dev)->is_valleyview && IS_GEN8(dev))
2467 #define IS_HASWELL(dev) (INTEL_INFO(dev)->is_haswell)
2468 #define IS_BROADWELL(dev) (!INTEL_INFO(dev)->is_valleyview && IS_GEN8(dev))
2469 #define IS_SKYLAKE(dev) (INTEL_INFO(dev)->is_skylake)
2470 #define IS_BROXTON(dev) (!INTEL_INFO(dev)->is_skylake && IS_GEN9(dev))
2471 #define IS_MOBILE(dev) (INTEL_INFO(dev)->is_mobile)
2472 #define IS_HSW_EARLY_SDV(dev) (IS_HASWELL(dev) && \
2473 (INTEL_DEVID(dev) & 0xFF00) == 0x0C00)
2474 #define IS_BDW_ULT(dev) (IS_BROADWELL(dev) && \
2475 ((INTEL_DEVID(dev) & 0xf) == 0x6 || \
2476 (INTEL_DEVID(dev) & 0xf) == 0xb || \
2477 (INTEL_DEVID(dev) & 0xf) == 0xe))
2478 /* ULX machines are also considered ULT. */
2479 #define IS_BDW_ULX(dev) (IS_BROADWELL(dev) && \
2480 (INTEL_DEVID(dev) & 0xf) == 0xe)
2481 #define IS_BDW_GT3(dev) (IS_BROADWELL(dev) && \
2482 (INTEL_DEVID(dev) & 0x00F0) == 0x0020)
2483 #define IS_HSW_ULT(dev) (IS_HASWELL(dev) && \
2484 (INTEL_DEVID(dev) & 0xFF00) == 0x0A00)
2485 #define IS_HSW_GT3(dev) (IS_HASWELL(dev) && \
2486 (INTEL_DEVID(dev) & 0x00F0) == 0x0020)
2487 /* ULX machines are also considered ULT. */
2488 #define IS_HSW_ULX(dev) (INTEL_DEVID(dev) == 0x0A0E || \
2489 INTEL_DEVID(dev) == 0x0A1E)
2490 #define IS_SKL_ULT(dev) (INTEL_DEVID(dev) == 0x1906 || \
2491 INTEL_DEVID(dev) == 0x1913 || \
2492 INTEL_DEVID(dev) == 0x1916 || \
2493 INTEL_DEVID(dev) == 0x1921 || \
2494 INTEL_DEVID(dev) == 0x1926)
2495 #define IS_SKL_ULX(dev) (INTEL_DEVID(dev) == 0x190E || \
2496 INTEL_DEVID(dev) == 0x1915 || \
2497 INTEL_DEVID(dev) == 0x191E)
2498 #define IS_SKL_GT3(dev) (IS_SKYLAKE(dev) && \
2499 (INTEL_DEVID(dev) & 0x00F0) == 0x0020)
2500 #define IS_SKL_GT4(dev) (IS_SKYLAKE(dev) && \
2501 (INTEL_DEVID(dev) & 0x00F0) == 0x0030)
2503 #define IS_PRELIMINARY_HW(intel_info) ((intel_info)->is_preliminary)
2505 #define SKL_REVID_A0 (0x0)
2506 #define SKL_REVID_B0 (0x1)
2507 #define SKL_REVID_C0 (0x2)
2508 #define SKL_REVID_D0 (0x3)
2509 #define SKL_REVID_E0 (0x4)
2510 #define SKL_REVID_F0 (0x5)
2512 #define BXT_REVID_A0 (0x0)
2513 #define BXT_REVID_B0 (0x3)
2514 #define BXT_REVID_C0 (0x9)
2517 * The genX designation typically refers to the render engine, so render
2518 * capability related checks should use IS_GEN, while display and other checks
2519 * have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
2522 #define IS_GEN2(dev) (INTEL_INFO(dev)->gen == 2)
2523 #define IS_GEN3(dev) (INTEL_INFO(dev)->gen == 3)
2524 #define IS_GEN4(dev) (INTEL_INFO(dev)->gen == 4)
2525 #define IS_GEN5(dev) (INTEL_INFO(dev)->gen == 5)
2526 #define IS_GEN6(dev) (INTEL_INFO(dev)->gen == 6)
2527 #define IS_GEN7(dev) (INTEL_INFO(dev)->gen == 7)
2528 #define IS_GEN8(dev) (INTEL_INFO(dev)->gen == 8)
2529 #define IS_GEN9(dev) (INTEL_INFO(dev)->gen == 9)
2531 #define RENDER_RING (1<<RCS)
2532 #define BSD_RING (1<<VCS)
2533 #define BLT_RING (1<<BCS)
2534 #define VEBOX_RING (1<<VECS)
2535 #define BSD2_RING (1<<VCS2)
2536 #define HAS_BSD(dev) (INTEL_INFO(dev)->ring_mask & BSD_RING)
2537 #define HAS_BSD2(dev) (INTEL_INFO(dev)->ring_mask & BSD2_RING)
2538 #define HAS_BLT(dev) (INTEL_INFO(dev)->ring_mask & BLT_RING)
2539 #define HAS_VEBOX(dev) (INTEL_INFO(dev)->ring_mask & VEBOX_RING)
2540 #define HAS_LLC(dev) (INTEL_INFO(dev)->has_llc)
2541 #define HAS_WT(dev) ((IS_HASWELL(dev) || IS_BROADWELL(dev)) && \
2542 __I915__(dev)->ellc_size)
2543 #define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws)
2545 #define HAS_HW_CONTEXTS(dev) (INTEL_INFO(dev)->gen >= 6)
2546 #define HAS_LOGICAL_RING_CONTEXTS(dev) (INTEL_INFO(dev)->gen >= 8)
2547 #define USES_PPGTT(dev) (i915.enable_ppgtt)
2548 #define USES_FULL_PPGTT(dev) (i915.enable_ppgtt >= 2)
2549 #define USES_FULL_48BIT_PPGTT(dev) (i915.enable_ppgtt == 3)
2551 #define HAS_OVERLAY(dev) (INTEL_INFO(dev)->has_overlay)
2552 #define OVERLAY_NEEDS_PHYSICAL(dev) (INTEL_INFO(dev)->overlay_needs_physical)
2554 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
2555 #define HAS_BROKEN_CS_TLB(dev) (IS_I830(dev) || IS_845G(dev))
2557 * dp aux and gmbus irq on gen4 seems to be able to generate legacy interrupts
2558 * even when in MSI mode. This results in spurious interrupt warnings if the
2559 * legacy irq no. is shared with another device. The kernel then disables that
2560 * interrupt source and so prevents the other device from working properly.
2562 #define HAS_AUX_IRQ(dev) (INTEL_INFO(dev)->gen >= 5)
2563 #define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 5)
2565 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
2566 * rows, which changed the alignment requirements and fence programming.
2568 #define HAS_128_BYTE_Y_TILING(dev) (!IS_GEN2(dev) && !(IS_I915G(dev) || \
2570 #define SUPPORTS_TV(dev) (INTEL_INFO(dev)->supports_tv)
2571 #define I915_HAS_HOTPLUG(dev) (INTEL_INFO(dev)->has_hotplug)
2573 #define HAS_FW_BLC(dev) (INTEL_INFO(dev)->gen > 2)
2574 #define HAS_PIPE_CXSR(dev) (INTEL_INFO(dev)->has_pipe_cxsr)
2575 #define HAS_FBC(dev) (INTEL_INFO(dev)->has_fbc)
2577 #define HAS_IPS(dev) (IS_HSW_ULT(dev) || IS_BROADWELL(dev))
2579 #define HAS_DP_MST(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev) || \
2580 INTEL_INFO(dev)->gen >= 9)
2582 #define HAS_DDI(dev) (INTEL_INFO(dev)->has_ddi)
2583 #define HAS_FPGA_DBG_UNCLAIMED(dev) (INTEL_INFO(dev)->has_fpga_dbg)
2584 #define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev) || \
2585 IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev) || \
2587 #define HAS_RUNTIME_PM(dev) (IS_GEN6(dev) || IS_HASWELL(dev) || \
2588 IS_BROADWELL(dev) || IS_VALLEYVIEW(dev) || \
2590 #define HAS_RC6(dev) (INTEL_INFO(dev)->gen >= 6)
2591 #define HAS_RC6p(dev) (INTEL_INFO(dev)->gen == 6 || IS_IVYBRIDGE(dev))
2593 #define HAS_CSR(dev) (IS_GEN9(dev))
2595 #define HAS_GUC_UCODE(dev) (IS_GEN9(dev))
2596 #define HAS_GUC_SCHED(dev) (IS_GEN9(dev))
2598 #define HAS_RESOURCE_STREAMER(dev) (IS_HASWELL(dev) || \
2599 INTEL_INFO(dev)->gen >= 8)
2601 #define HAS_CORE_RING_FREQ(dev) (INTEL_INFO(dev)->gen >= 6 && \
2602 !IS_VALLEYVIEW(dev) && !IS_BROXTON(dev))
2604 #define INTEL_PCH_DEVICE_ID_MASK 0xff00
2605 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
2606 #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
2607 #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
2608 #define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
2609 #define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
2610 #define INTEL_PCH_SPT_DEVICE_ID_TYPE 0xA100
2611 #define INTEL_PCH_SPT_LP_DEVICE_ID_TYPE 0x9D00
2612 #define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
2614 #define INTEL_PCH_TYPE(dev) (__I915__(dev)->pch_type)
2615 #define HAS_PCH_SPT(dev) (INTEL_PCH_TYPE(dev) == PCH_SPT)
2616 #define HAS_PCH_LPT(dev) (INTEL_PCH_TYPE(dev) == PCH_LPT)
2617 #define HAS_PCH_LPT_LP(dev) (__I915__(dev)->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE)
2618 #define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
2619 #define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
2620 #define HAS_PCH_NOP(dev) (INTEL_PCH_TYPE(dev) == PCH_NOP)
2621 #define HAS_PCH_SPLIT(dev) (INTEL_PCH_TYPE(dev) != PCH_NONE)
2623 #define HAS_GMCH_DISPLAY(dev) (INTEL_INFO(dev)->gen < 5 || IS_VALLEYVIEW(dev))
2625 /* DPF == dynamic parity feature */
2626 #define HAS_L3_DPF(dev) (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
2627 #define NUM_L3_SLICES(dev) (IS_HSW_GT3(dev) ? 2 : HAS_L3_DPF(dev))
2629 #define GT_FREQUENCY_MULTIPLIER 50
2630 #define GEN9_FREQ_SCALER 3
2632 #include "i915_trace.h"
2634 extern const struct drm_ioctl_desc i915_ioctls[];
2635 extern int i915_max_ioctl;
2637 extern int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state);
2638 extern int i915_resume_switcheroo(struct drm_device *dev);
2641 struct i915_params {
2643 int panel_ignore_lid;
2645 int lvds_channel_mode;
2647 int vbt_sdvo_panel_type;
2651 int enable_execlists;
2653 unsigned int preliminary_hw_support;
2654 int disable_power_well;
2656 int invert_brightness;
2657 int enable_cmd_parser;
2658 /* leave bools at the end to not create holes */
2659 bool enable_hangcheck;
2660 bool prefault_disable;
2661 bool load_detect_test;
2663 bool disable_display;
2664 bool disable_vtd_wa;
2665 bool enable_guc_submission;
2669 bool verbose_state_checks;
2670 bool nuclear_pageflip;
2673 extern struct i915_params i915 __read_mostly;
2676 extern int i915_driver_load(struct drm_device *, unsigned long flags);
2677 extern int i915_driver_unload(struct drm_device *);
2678 extern int i915_driver_open(struct drm_device *dev, struct drm_file *file);
2679 extern void i915_driver_lastclose(struct drm_device * dev);
2680 extern void i915_driver_preclose(struct drm_device *dev,
2681 struct drm_file *file);
2682 extern void i915_driver_postclose(struct drm_device *dev,
2683 struct drm_file *file);
2684 #ifdef CONFIG_COMPAT
2685 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
2688 extern int intel_gpu_reset(struct drm_device *dev);
2689 extern bool intel_has_gpu_reset(struct drm_device *dev);
2690 extern int i915_reset(struct drm_device *dev);
2691 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
2692 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
2693 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
2694 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
2695 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
2696 void i915_firmware_load_error_print(const char *fw_path, int err);
2698 /* intel_hotplug.c */
2699 void intel_hpd_irq_handler(struct drm_device *dev, u32 pin_mask, u32 long_mask);
2700 void intel_hpd_init(struct drm_i915_private *dev_priv);
2701 void intel_hpd_init_work(struct drm_i915_private *dev_priv);
2702 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv);
2703 bool intel_hpd_pin_to_port(enum hpd_pin pin, enum port *port);
2706 void i915_queue_hangcheck(struct drm_device *dev);
2708 void i915_handle_error(struct drm_device *dev, bool wedged,
2709 const char *fmt, ...);
2711 extern void intel_irq_init(struct drm_i915_private *dev_priv);
2712 int intel_irq_install(struct drm_i915_private *dev_priv);
2713 void intel_irq_uninstall(struct drm_i915_private *dev_priv);
2715 extern void intel_uncore_sanitize(struct drm_device *dev);
2716 extern void intel_uncore_early_sanitize(struct drm_device *dev,
2717 bool restore_forcewake);
2718 extern void intel_uncore_init(struct drm_device *dev);
2719 extern void intel_uncore_check_errors(struct drm_device *dev);
2720 extern void intel_uncore_fini(struct drm_device *dev);
2721 extern void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore);
2722 const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id);
2723 void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
2724 enum forcewake_domains domains);
2725 void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv,
2726 enum forcewake_domains domains);
2727 /* Like above but the caller must manage the uncore.lock itself.
2728 * Must be used with I915_READ_FW and friends.
2730 void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv,
2731 enum forcewake_domains domains);
2732 void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv,
2733 enum forcewake_domains domains);
2734 void assert_forcewakes_inactive(struct drm_i915_private *dev_priv);
2735 static inline bool intel_vgpu_active(struct drm_device *dev)
2737 return to_i915(dev)->vgpu.active;
2741 i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2745 i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2748 void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
2749 void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
2750 void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
2754 ironlake_enable_display_irq(struct drm_i915_private *dev_priv, u32 mask);
2756 ironlake_disable_display_irq(struct drm_i915_private *dev_priv, u32 mask);
2757 void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
2758 uint32_t interrupt_mask,
2759 uint32_t enabled_irq_mask);
2760 #define ibx_enable_display_interrupt(dev_priv, bits) \
2761 ibx_display_interrupt_update((dev_priv), (bits), (bits))
2762 #define ibx_disable_display_interrupt(dev_priv, bits) \
2763 ibx_display_interrupt_update((dev_priv), (bits), 0)
2766 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
2767 struct drm_file *file_priv);
2768 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
2769 struct drm_file *file_priv);
2770 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
2771 struct drm_file *file_priv);
2772 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
2773 struct drm_file *file_priv);
2774 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
2775 struct drm_file *file_priv);
2776 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
2777 struct drm_file *file_priv);
2778 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
2779 struct drm_file *file_priv);
2780 void i915_gem_execbuffer_move_to_active(struct list_head *vmas,
2781 struct drm_i915_gem_request *req);
2782 void i915_gem_execbuffer_retire_commands(struct i915_execbuffer_params *params);
2783 int i915_gem_ringbuffer_submission(struct i915_execbuffer_params *params,
2784 struct drm_i915_gem_execbuffer2 *args,
2785 struct list_head *vmas);
2786 int i915_gem_execbuffer(struct drm_device *dev, void *data,
2787 struct drm_file *file_priv);
2788 int i915_gem_execbuffer2(struct drm_device *dev, void *data,
2789 struct drm_file *file_priv);
2790 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
2791 struct drm_file *file_priv);
2792 int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
2793 struct drm_file *file);
2794 int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
2795 struct drm_file *file);
2796 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
2797 struct drm_file *file_priv);
2798 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
2799 struct drm_file *file_priv);
2800 int i915_gem_set_tiling(struct drm_device *dev, void *data,
2801 struct drm_file *file_priv);
2802 int i915_gem_get_tiling(struct drm_device *dev, void *data,
2803 struct drm_file *file_priv);
2804 int i915_gem_init_userptr(struct drm_device *dev);
2805 int i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
2806 struct drm_file *file);
2807 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
2808 struct drm_file *file_priv);
2809 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
2810 struct drm_file *file_priv);
2811 void i915_gem_load(struct drm_device *dev);
2812 void *i915_gem_object_alloc(struct drm_device *dev);
2813 void i915_gem_object_free(struct drm_i915_gem_object *obj);
2814 void i915_gem_object_init(struct drm_i915_gem_object *obj,
2815 const struct drm_i915_gem_object_ops *ops);
2816 struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
2818 struct drm_i915_gem_object *i915_gem_object_create_from_data(
2819 struct drm_device *dev, const void *data, size_t size);
2820 void i915_gem_free_object(struct drm_gem_object *obj);
2821 void i915_gem_vma_destroy(struct i915_vma *vma);
2823 /* Flags used by pin/bind&friends. */
2824 #define PIN_MAPPABLE (1<<0)
2825 #define PIN_NONBLOCK (1<<1)
2826 #define PIN_GLOBAL (1<<2)
2827 #define PIN_OFFSET_BIAS (1<<3)
2828 #define PIN_USER (1<<4)
2829 #define PIN_UPDATE (1<<5)
2830 #define PIN_ZONE_4G (1<<6)
2831 #define PIN_HIGH (1<<7)
2832 #define PIN_OFFSET_MASK (~4095)
2834 i915_gem_object_pin(struct drm_i915_gem_object *obj,
2835 struct i915_address_space *vm,
2839 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
2840 const struct i915_ggtt_view *view,
2844 int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
2846 int __must_check i915_vma_unbind(struct i915_vma *vma);
2848 * BEWARE: Do not use the function below unless you can _absolutely_
2849 * _guarantee_ VMA in question is _not in use_ anywhere.
2851 int __must_check __i915_vma_unbind_no_wait(struct i915_vma *vma);
2852 int i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
2853 void i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv);
2854 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
2856 int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
2857 int *needs_clflush);
2859 int __must_check i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
2861 static inline int __sg_page_count(struct scatterlist *sg)
2863 return sg->length >> PAGE_SHIFT;
2866 static inline struct page *
2867 i915_gem_object_get_page(struct drm_i915_gem_object *obj, int n)
2869 if (WARN_ON(n >= obj->base.size >> PAGE_SHIFT))
2872 if (n < obj->get_page.last) {
2873 obj->get_page.sg = obj->pages->sgl;
2874 obj->get_page.last = 0;
2877 while (obj->get_page.last + __sg_page_count(obj->get_page.sg) <= n) {
2878 obj->get_page.last += __sg_page_count(obj->get_page.sg++);
2879 if (unlikely(sg_is_chain(obj->get_page.sg)))
2880 obj->get_page.sg = sg_chain_ptr(obj->get_page.sg);
2883 return nth_page(sg_page(obj->get_page.sg), n - obj->get_page.last);
2886 static inline void i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2888 BUG_ON(obj->pages == NULL);
2889 obj->pages_pin_count++;
2891 static inline void i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
2893 BUG_ON(obj->pages_pin_count == 0);
2894 obj->pages_pin_count--;
2897 int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
2898 int i915_gem_object_sync(struct drm_i915_gem_object *obj,
2899 struct intel_engine_cs *to,
2900 struct drm_i915_gem_request **to_req);
2901 void i915_vma_move_to_active(struct i915_vma *vma,
2902 struct drm_i915_gem_request *req);
2903 int i915_gem_dumb_create(struct drm_file *file_priv,
2904 struct drm_device *dev,
2905 struct drm_mode_create_dumb *args);
2906 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
2907 uint32_t handle, uint64_t *offset);
2909 * Returns true if seq1 is later than seq2.
2912 i915_seqno_passed(uint32_t seq1, uint32_t seq2)
2914 return (int32_t)(seq1 - seq2) >= 0;
2917 static inline bool i915_gem_request_completed(struct drm_i915_gem_request *req,
2918 bool lazy_coherency)
2922 BUG_ON(req == NULL);
2924 seqno = req->ring->get_seqno(req->ring, lazy_coherency);
2926 return i915_seqno_passed(seqno, req->seqno);
2929 int __must_check i915_gem_get_seqno(struct drm_device *dev, u32 *seqno);
2930 int __must_check i915_gem_set_seqno(struct drm_device *dev, u32 seqno);
2932 struct drm_i915_gem_request *
2933 i915_gem_find_active_request(struct intel_engine_cs *ring);
2935 bool i915_gem_retire_requests(struct drm_device *dev);
2936 void i915_gem_retire_requests_ring(struct intel_engine_cs *ring);
2937 int __must_check i915_gem_check_wedge(struct i915_gpu_error *error,
2938 bool interruptible);
2940 static inline bool i915_reset_in_progress(struct i915_gpu_error *error)
2942 return unlikely(atomic_read(&error->reset_counter)
2943 & (I915_RESET_IN_PROGRESS_FLAG | I915_WEDGED));
2946 static inline bool i915_terminally_wedged(struct i915_gpu_error *error)
2948 return atomic_read(&error->reset_counter) & I915_WEDGED;
2951 static inline u32 i915_reset_count(struct i915_gpu_error *error)
2953 return ((atomic_read(&error->reset_counter) & ~I915_WEDGED) + 1) / 2;
2956 static inline bool i915_stop_ring_allow_ban(struct drm_i915_private *dev_priv)
2958 return dev_priv->gpu_error.stop_rings == 0 ||
2959 dev_priv->gpu_error.stop_rings & I915_STOP_RING_ALLOW_BAN;
2962 static inline bool i915_stop_ring_allow_warn(struct drm_i915_private *dev_priv)
2964 return dev_priv->gpu_error.stop_rings == 0 ||
2965 dev_priv->gpu_error.stop_rings & I915_STOP_RING_ALLOW_WARN;
2968 void i915_gem_reset(struct drm_device *dev);
2969 bool i915_gem_clflush_object(struct drm_i915_gem_object *obj, bool force);
2970 int __must_check i915_gem_init(struct drm_device *dev);
2971 int i915_gem_init_rings(struct drm_device *dev);
2972 int __must_check i915_gem_init_hw(struct drm_device *dev);
2973 int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice);
2974 void i915_gem_init_swizzling(struct drm_device *dev);
2975 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
2976 int __must_check i915_gpu_idle(struct drm_device *dev);
2977 int __must_check i915_gem_suspend(struct drm_device *dev);
2978 void __i915_add_request(struct drm_i915_gem_request *req,
2979 struct drm_i915_gem_object *batch_obj,
2981 #define i915_add_request(req) \
2982 __i915_add_request(req, NULL, true)
2983 #define i915_add_request_no_flush(req) \
2984 __i915_add_request(req, NULL, false)
2985 int __i915_wait_request(struct drm_i915_gem_request *req,
2986 unsigned reset_counter,
2989 struct intel_rps_client *rps);
2990 int __must_check i915_wait_request(struct drm_i915_gem_request *req);
2991 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
2993 i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj,
2996 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
2999 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
3001 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
3003 struct intel_engine_cs *pipelined,
3004 struct drm_i915_gem_request **pipelined_request,
3005 const struct i915_ggtt_view *view);
3006 void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj,
3007 const struct i915_ggtt_view *view);
3008 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
3010 int i915_gem_open(struct drm_device *dev, struct drm_file *file);
3011 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
3014 i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode);
3016 i915_gem_get_gtt_alignment(struct drm_device *dev, uint32_t size,
3017 int tiling_mode, bool fenced);
3019 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
3020 enum i915_cache_level cache_level);
3022 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
3023 struct dma_buf *dma_buf);
3025 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
3026 struct drm_gem_object *gem_obj, int flags);
3028 u64 i915_gem_obj_ggtt_offset_view(struct drm_i915_gem_object *o,
3029 const struct i915_ggtt_view *view);
3030 u64 i915_gem_obj_offset(struct drm_i915_gem_object *o,
3031 struct i915_address_space *vm);
3033 i915_gem_obj_ggtt_offset(struct drm_i915_gem_object *o)
3035 return i915_gem_obj_ggtt_offset_view(o, &i915_ggtt_view_normal);
3038 bool i915_gem_obj_bound_any(struct drm_i915_gem_object *o);
3039 bool i915_gem_obj_ggtt_bound_view(struct drm_i915_gem_object *o,
3040 const struct i915_ggtt_view *view);
3041 bool i915_gem_obj_bound(struct drm_i915_gem_object *o,
3042 struct i915_address_space *vm);
3044 unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o,
3045 struct i915_address_space *vm);
3047 i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
3048 struct i915_address_space *vm);
3050 i915_gem_obj_to_ggtt_view(struct drm_i915_gem_object *obj,
3051 const struct i915_ggtt_view *view);
3054 i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
3055 struct i915_address_space *vm);
3057 i915_gem_obj_lookup_or_create_ggtt_vma(struct drm_i915_gem_object *obj,
3058 const struct i915_ggtt_view *view);
3060 static inline struct i915_vma *
3061 i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj)
3063 return i915_gem_obj_to_ggtt_view(obj, &i915_ggtt_view_normal);
3065 bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj);
3067 /* Some GGTT VM helpers */
3068 #define i915_obj_to_ggtt(obj) \
3069 (&((struct drm_i915_private *)(obj)->base.dev->dev_private)->gtt.base)
3070 static inline bool i915_is_ggtt(struct i915_address_space *vm)
3072 struct i915_address_space *ggtt =
3073 &((struct drm_i915_private *)(vm)->dev->dev_private)->gtt.base;
3077 static inline struct i915_hw_ppgtt *
3078 i915_vm_to_ppgtt(struct i915_address_space *vm)
3080 WARN_ON(i915_is_ggtt(vm));
3082 return container_of(vm, struct i915_hw_ppgtt, base);
3086 static inline bool i915_gem_obj_ggtt_bound(struct drm_i915_gem_object *obj)
3088 return i915_gem_obj_ggtt_bound_view(obj, &i915_ggtt_view_normal);
3091 static inline unsigned long
3092 i915_gem_obj_ggtt_size(struct drm_i915_gem_object *obj)
3094 return i915_gem_obj_size(obj, i915_obj_to_ggtt(obj));
3097 static inline int __must_check
3098 i915_gem_obj_ggtt_pin(struct drm_i915_gem_object *obj,
3102 return i915_gem_object_pin(obj, i915_obj_to_ggtt(obj),
3103 alignment, flags | PIN_GLOBAL);
3107 i915_gem_object_ggtt_unbind(struct drm_i915_gem_object *obj)
3109 return i915_vma_unbind(i915_gem_obj_to_ggtt(obj));
3112 void i915_gem_object_ggtt_unpin_view(struct drm_i915_gem_object *obj,
3113 const struct i915_ggtt_view *view);
3115 i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj)
3117 i915_gem_object_ggtt_unpin_view(obj, &i915_ggtt_view_normal);
3120 /* i915_gem_fence.c */
3121 int __must_check i915_gem_object_get_fence(struct drm_i915_gem_object *obj);
3122 int __must_check i915_gem_object_put_fence(struct drm_i915_gem_object *obj);
3124 bool i915_gem_object_pin_fence(struct drm_i915_gem_object *obj);
3125 void i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj);
3127 void i915_gem_restore_fences(struct drm_device *dev);
3129 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
3130 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj);
3131 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj);
3133 /* i915_gem_context.c */
3134 int __must_check i915_gem_context_init(struct drm_device *dev);
3135 void i915_gem_context_fini(struct drm_device *dev);
3136 void i915_gem_context_reset(struct drm_device *dev);
3137 int i915_gem_context_open(struct drm_device *dev, struct drm_file *file);
3138 int i915_gem_context_enable(struct drm_i915_gem_request *req);
3139 void i915_gem_context_close(struct drm_device *dev, struct drm_file *file);
3140 int i915_switch_context(struct drm_i915_gem_request *req);
3141 struct intel_context *
3142 i915_gem_context_get(struct drm_i915_file_private *file_priv, u32 id);
3143 void i915_gem_context_free(struct kref *ctx_ref);
3144 struct drm_i915_gem_object *
3145 i915_gem_alloc_context_obj(struct drm_device *dev, size_t size);
3146 static inline void i915_gem_context_reference(struct intel_context *ctx)
3148 kref_get(&ctx->ref);
3151 static inline void i915_gem_context_unreference(struct intel_context *ctx)
3153 kref_put(&ctx->ref, i915_gem_context_free);
3156 static inline bool i915_gem_context_is_default(const struct intel_context *c)
3158 return c->user_handle == DEFAULT_CONTEXT_HANDLE;
3161 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
3162 struct drm_file *file);
3163 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
3164 struct drm_file *file);
3165 int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
3166 struct drm_file *file_priv);
3167 int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
3168 struct drm_file *file_priv);
3170 /* i915_gem_evict.c */
3171 int __must_check i915_gem_evict_something(struct drm_device *dev,
3172 struct i915_address_space *vm,
3175 unsigned cache_level,
3176 unsigned long start,
3179 int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle);
3180 int i915_gem_evict_everything(struct drm_device *dev);
3182 /* belongs in i915_gem_gtt.h */
3183 static inline void i915_gem_chipset_flush(struct drm_device *dev)
3185 if (INTEL_INFO(dev)->gen < 6)
3186 intel_gtt_chipset_flush();
3189 /* i915_gem_stolen.c */
3190 int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv,
3191 struct drm_mm_node *node, u64 size,
3192 unsigned alignment);
3193 int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
3194 struct drm_mm_node *node, u64 size,
3195 unsigned alignment, u64 start,
3197 void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
3198 struct drm_mm_node *node);
3199 int i915_gem_init_stolen(struct drm_device *dev);
3200 void i915_gem_cleanup_stolen(struct drm_device *dev);
3201 struct drm_i915_gem_object *
3202 i915_gem_object_create_stolen(struct drm_device *dev, u32 size);
3203 struct drm_i915_gem_object *
3204 i915_gem_object_create_stolen_for_preallocated(struct drm_device *dev,
3209 /* i915_gem_shrinker.c */
3210 unsigned long i915_gem_shrink(struct drm_i915_private *dev_priv,
3211 unsigned long target,
3213 #define I915_SHRINK_PURGEABLE 0x1
3214 #define I915_SHRINK_UNBOUND 0x2
3215 #define I915_SHRINK_BOUND 0x4
3216 unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv);
3217 void i915_gem_shrinker_init(struct drm_i915_private *dev_priv);
3220 /* i915_gem_tiling.c */
3221 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
3223 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
3225 return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
3226 obj->tiling_mode != I915_TILING_NONE;
3229 /* i915_gem_debug.c */
3231 int i915_verify_lists(struct drm_device *dev);
3233 #define i915_verify_lists(dev) 0
3236 /* i915_debugfs.c */
3237 int i915_debugfs_init(struct drm_minor *minor);
3238 void i915_debugfs_cleanup(struct drm_minor *minor);
3239 #ifdef CONFIG_DEBUG_FS
3240 int i915_debugfs_connector_add(struct drm_connector *connector);
3241 void intel_display_crc_init(struct drm_device *dev);
3243 static inline int i915_debugfs_connector_add(struct drm_connector *connector)
3245 static inline void intel_display_crc_init(struct drm_device *dev) {}
3248 /* i915_gpu_error.c */
3250 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...);
3251 int i915_error_state_to_str(struct drm_i915_error_state_buf *estr,
3252 const struct i915_error_state_file_priv *error);
3253 int i915_error_state_buf_init(struct drm_i915_error_state_buf *eb,
3254 struct drm_i915_private *i915,
3255 size_t count, loff_t pos);
3256 static inline void i915_error_state_buf_release(
3257 struct drm_i915_error_state_buf *eb)
3261 void i915_capture_error_state(struct drm_device *dev, bool wedge,
3262 const char *error_msg);
3263 void i915_error_state_get(struct drm_device *dev,
3264 struct i915_error_state_file_priv *error_priv);
3265 void i915_error_state_put(struct i915_error_state_file_priv *error_priv);
3266 void i915_destroy_error_state(struct drm_device *dev);
3268 void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone);
3269 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
3271 /* i915_cmd_parser.c */
3272 int i915_cmd_parser_get_version(void);
3273 int i915_cmd_parser_init_ring(struct intel_engine_cs *ring);
3274 void i915_cmd_parser_fini_ring(struct intel_engine_cs *ring);
3275 bool i915_needs_cmd_parser(struct intel_engine_cs *ring);
3276 int i915_parse_cmds(struct intel_engine_cs *ring,
3277 struct drm_i915_gem_object *batch_obj,
3278 struct drm_i915_gem_object *shadow_batch_obj,
3279 u32 batch_start_offset,
3283 /* i915_suspend.c */
3284 extern int i915_save_state(struct drm_device *dev);
3285 extern int i915_restore_state(struct drm_device *dev);
3288 void i915_setup_sysfs(struct drm_device *dev_priv);
3289 void i915_teardown_sysfs(struct drm_device *dev_priv);
3292 extern int intel_setup_gmbus(struct drm_device *dev);
3293 extern void intel_teardown_gmbus(struct drm_device *dev);
3294 extern bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
3297 extern struct i2c_adapter *
3298 intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
3299 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
3300 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
3301 static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
3303 return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
3305 extern void intel_i2c_reset(struct drm_device *dev);
3307 /* intel_opregion.c */
3309 extern int intel_opregion_setup(struct drm_device *dev);
3310 extern void intel_opregion_init(struct drm_device *dev);
3311 extern void intel_opregion_fini(struct drm_device *dev);
3312 extern void intel_opregion_asle_intr(struct drm_device *dev);
3313 extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
3315 extern int intel_opregion_notify_adapter(struct drm_device *dev,
3318 static inline int intel_opregion_setup(struct drm_device *dev) { return 0; }
3319 static inline void intel_opregion_init(struct drm_device *dev) { return; }
3320 static inline void intel_opregion_fini(struct drm_device *dev) { return; }
3321 static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; }
3323 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
3328 intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
3336 extern void intel_register_dsm_handler(void);
3337 extern void intel_unregister_dsm_handler(void);
3339 static inline void intel_register_dsm_handler(void) { return; }
3340 static inline void intel_unregister_dsm_handler(void) { return; }
3341 #endif /* CONFIG_ACPI */
3344 extern void intel_modeset_init_hw(struct drm_device *dev);
3345 extern void intel_modeset_init(struct drm_device *dev);
3346 extern void intel_modeset_gem_init(struct drm_device *dev);
3347 extern void intel_modeset_cleanup(struct drm_device *dev);
3348 extern void intel_connector_unregister(struct intel_connector *);
3349 extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state);
3350 extern void intel_display_resume(struct drm_device *dev);
3351 extern void i915_redisable_vga(struct drm_device *dev);
3352 extern void i915_redisable_vga_power_on(struct drm_device *dev);
3353 extern bool ironlake_set_drps(struct drm_device *dev, u8 val);
3354 extern void intel_init_pch_refclk(struct drm_device *dev);
3355 extern void intel_set_rps(struct drm_device *dev, u8 val);
3356 extern void intel_set_memory_cxsr(struct drm_i915_private *dev_priv,
3358 extern void intel_detect_pch(struct drm_device *dev);
3359 extern int intel_trans_dp_port_sel(struct drm_crtc *crtc);
3360 extern int intel_enable_rc6(const struct drm_device *dev);
3362 extern bool i915_semaphore_is_enabled(struct drm_device *dev);
3363 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
3364 struct drm_file *file);
3365 int i915_get_reset_stats_ioctl(struct drm_device *dev, void *data,
3366 struct drm_file *file);
3369 extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
3370 extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
3371 struct intel_overlay_error_state *error);
3373 extern struct intel_display_error_state *intel_display_capture_error_state(struct drm_device *dev);
3374 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
3375 struct drm_device *dev,
3376 struct intel_display_error_state *error);
3378 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
3379 int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val);
3381 /* intel_sideband.c */
3382 u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
3383 void vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
3384 u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
3385 u32 vlv_gpio_nc_read(struct drm_i915_private *dev_priv, u32 reg);
3386 void vlv_gpio_nc_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3387 u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
3388 void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3389 u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
3390 void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3391 u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
3392 void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3393 u32 vlv_gps_core_read(struct drm_i915_private *dev_priv, u32 reg);
3394 void vlv_gps_core_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3395 u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
3396 void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
3397 u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
3398 enum intel_sbi_destination destination);
3399 void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
3400 enum intel_sbi_destination destination);
3401 u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
3402 void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3404 int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
3405 int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
3407 #define I915_READ8(reg) dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true)
3408 #define I915_WRITE8(reg, val) dev_priv->uncore.funcs.mmio_writeb(dev_priv, (reg), (val), true)
3410 #define I915_READ16(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), true)
3411 #define I915_WRITE16(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), true)
3412 #define I915_READ16_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), false)
3413 #define I915_WRITE16_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), false)
3415 #define I915_READ(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), true)
3416 #define I915_WRITE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), true)
3417 #define I915_READ_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), false)
3418 #define I915_WRITE_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), false)
3420 /* Be very careful with read/write 64-bit values. On 32-bit machines, they
3421 * will be implemented using 2 32-bit writes in an arbitrary order with
3422 * an arbitrary delay between them. This can cause the hardware to
3423 * act upon the intermediate value, possibly leading to corruption and
3424 * machine death. You have been warned.
3426 #define I915_WRITE64(reg, val) dev_priv->uncore.funcs.mmio_writeq(dev_priv, (reg), (val), true)
3427 #define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
3429 #define I915_READ64_2x32(lower_reg, upper_reg) ({ \
3430 u32 upper, lower, old_upper, loop = 0; \
3431 upper = I915_READ(upper_reg); \
3433 old_upper = upper; \
3434 lower = I915_READ(lower_reg); \
3435 upper = I915_READ(upper_reg); \
3436 } while (upper != old_upper && loop++ < 2); \
3437 (u64)upper << 32 | lower; })
3439 #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
3440 #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
3442 /* These are untraced mmio-accessors that are only valid to be used inside
3443 * criticial sections inside IRQ handlers where forcewake is explicitly
3445 * Think twice, and think again, before using these.
3446 * Note: Should only be used between intel_uncore_forcewake_irqlock() and
3447 * intel_uncore_forcewake_irqunlock().
3449 #define I915_READ_FW(reg__) readl(dev_priv->regs + (reg__))
3450 #define I915_WRITE_FW(reg__, val__) writel(val__, dev_priv->regs + (reg__))
3451 #define POSTING_READ_FW(reg__) (void)I915_READ_FW(reg__)
3453 /* "Broadcast RGB" property */
3454 #define INTEL_BROADCAST_RGB_AUTO 0
3455 #define INTEL_BROADCAST_RGB_FULL 1
3456 #define INTEL_BROADCAST_RGB_LIMITED 2
3458 static inline uint32_t i915_vgacntrl_reg(struct drm_device *dev)
3460 if (IS_VALLEYVIEW(dev))
3461 return VLV_VGACNTRL;
3462 else if (INTEL_INFO(dev)->gen >= 5)
3463 return CPU_VGACNTRL;
3468 static inline void __user *to_user_ptr(u64 address)
3470 return (void __user *)(uintptr_t)address;
3473 static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m)
3475 unsigned long j = msecs_to_jiffies(m);
3477 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
3480 static inline unsigned long nsecs_to_jiffies_timeout(const u64 n)
3482 return min_t(u64, MAX_JIFFY_OFFSET, nsecs_to_jiffies64(n) + 1);
3485 static inline unsigned long
3486 timespec_to_jiffies_timeout(const struct timespec *value)
3488 unsigned long j = timespec_to_jiffies(value);
3490 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
3494 * If you need to wait X milliseconds between events A and B, but event B
3495 * doesn't happen exactly after event A, you record the timestamp (jiffies) of
3496 * when event A happened, then just before event B you call this function and
3497 * pass the timestamp as the first argument, and X as the second argument.
3500 wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
3502 unsigned long target_jiffies, tmp_jiffies, remaining_jiffies;
3505 * Don't re-read the value of "jiffies" every time since it may change
3506 * behind our back and break the math.
3508 tmp_jiffies = jiffies;
3509 target_jiffies = timestamp_jiffies +
3510 msecs_to_jiffies_timeout(to_wait_ms);
3512 if (time_after(target_jiffies, tmp_jiffies)) {
3513 remaining_jiffies = target_jiffies - tmp_jiffies;
3514 while (remaining_jiffies)
3516 schedule_timeout_uninterruptible(remaining_jiffies);
3520 static inline void i915_trace_irq_get(struct intel_engine_cs *ring,
3521 struct drm_i915_gem_request *req)
3523 if (ring->trace_irq_req == NULL && ring->irq_get(ring))
3524 i915_gem_request_assign(&ring->trace_irq_req, req);