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>
36 #include <linux/io-mapping.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <linux/backlight.h>
40 #include <linux/hash.h>
41 #include <linux/intel-iommu.h>
42 #include <linux/kref.h>
43 #include <linux/mm_types.h>
44 #include <linux/perf_event.h>
45 #include <linux/pm_qos.h>
46 #include <linux/reservation.h>
47 #include <linux/shmem_fs.h>
48 #include <linux/stackdepot.h>
50 #include <drm/intel-gtt.h>
51 #include <drm/drm_legacy.h> /* for struct drm_dma_handle */
52 #include <drm/drm_gem.h>
53 #include <drm/drm_auth.h>
54 #include <drm/drm_cache.h>
55 #include <drm/drm_util.h>
56 #include <drm/drm_dsc.h>
57 #include <drm/drm_connector.h>
58 #include <drm/i915_mei_hdcp_interface.h>
60 #include "i915_fixed.h"
61 #include "i915_params.h"
63 #include "i915_utils.h"
65 #include "intel_bios.h"
66 #include "intel_device_info.h"
67 #include "intel_display.h"
68 #include "intel_dpll_mgr.h"
69 #include "intel_lrc.h"
70 #include "intel_opregion.h"
71 #include "intel_ringbuffer.h"
72 #include "intel_uncore.h"
73 #include "intel_wopcm.h"
74 #include "intel_workarounds.h"
78 #include "i915_gem_context.h"
79 #include "i915_gem_fence_reg.h"
80 #include "i915_gem_object.h"
81 #include "i915_gem_gtt.h"
82 #include "i915_gpu_error.h"
83 #include "i915_request.h"
84 #include "i915_scheduler.h"
85 #include "i915_timeline.h"
88 #include "intel_gvt.h"
90 /* General customization:
93 #define DRIVER_NAME "i915"
94 #define DRIVER_DESC "Intel Graphics"
95 #define DRIVER_DATE "20190404"
96 #define DRIVER_TIMESTAMP 1554389037
98 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
99 * WARN_ON()) for hw state sanity checks to check for unexpected conditions
100 * which may not necessarily be a user visible problem. This will either
101 * WARN() or DRM_ERROR() depending on the verbose_checks moduleparam, to
102 * enable distros and users to tailor their preferred amount of i915 abrt
105 #define I915_STATE_WARN(condition, format...) ({ \
106 int __ret_warn_on = !!(condition); \
107 if (unlikely(__ret_warn_on)) \
108 if (!WARN(i915_modparams.verbose_state_checks, format)) \
110 unlikely(__ret_warn_on); \
113 #define I915_STATE_WARN_ON(x) \
114 I915_STATE_WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
116 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
118 bool __i915_inject_load_failure(const char *func, int line);
119 #define i915_inject_load_failure() \
120 __i915_inject_load_failure(__func__, __LINE__)
122 bool i915_error_injected(void);
126 #define i915_inject_load_failure() false
127 #define i915_error_injected() false
131 #define i915_load_error(i915, fmt, ...) \
132 __i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \
135 typedef depot_stack_handle_t intel_wakeref_t;
139 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
152 #define for_each_hpd_pin(__pin) \
153 for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
155 /* Threshold == 5 for long IRQs, 50 for short */
156 #define HPD_STORM_DEFAULT_THRESHOLD 50
158 struct i915_hotplug {
159 struct work_struct hotplug_work;
162 unsigned long last_jiffies;
167 HPD_MARK_DISABLED = 2
169 } stats[HPD_NUM_PINS];
171 struct delayed_work reenable_work;
175 struct work_struct dig_port_work;
177 struct work_struct poll_init_work;
180 unsigned int hpd_storm_threshold;
181 /* Whether or not to count short HPD IRQs in HPD storms */
182 u8 hpd_short_storm_enabled;
185 * if we get a HPD irq from DP and a HPD irq from non-DP
186 * the non-DP HPD could block the workqueue on a mode config
187 * mutex getting, that userspace may have taken. However
188 * userspace is waiting on the DP workqueue to run which is
189 * blocked behind the non-DP one.
191 struct workqueue_struct *dp_wq;
194 #define I915_GEM_GPU_DOMAINS \
195 (I915_GEM_DOMAIN_RENDER | \
196 I915_GEM_DOMAIN_SAMPLER | \
197 I915_GEM_DOMAIN_COMMAND | \
198 I915_GEM_DOMAIN_INSTRUCTION | \
199 I915_GEM_DOMAIN_VERTEX)
201 struct drm_i915_private;
202 struct i915_mm_struct;
203 struct i915_mmu_object;
205 struct drm_i915_file_private {
206 struct drm_i915_private *dev_priv;
207 struct drm_file *file;
211 struct list_head request_list;
212 /* 20ms is a fairly arbitrary limit (greater than the average frame time)
213 * chosen to prevent the CPU getting more than a frame ahead of the GPU
214 * (when using lax throttling for the frontbuffer). We also use it to
215 * offer free GPU waitboosts for severely congested workloads.
217 #define DRM_I915_THROTTLE_JIFFIES msecs_to_jiffies(20)
220 struct idr context_idr;
221 struct mutex context_idr_lock; /* guards context_idr */
224 struct mutex vm_idr_lock; /* guards vm_idr */
226 unsigned int bsd_engine;
229 * Every context ban increments per client ban score. Also
230 * hangs in short succession increments ban score. If ban threshold
231 * is reached, client is considered banned and submitting more work
232 * will fail. This is a stop gap measure to limit the badly behaving
233 * clients access to gpu. Note that unbannable contexts never increment
234 * the client ban score.
236 #define I915_CLIENT_SCORE_HANG_FAST 1
237 #define I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
238 #define I915_CLIENT_SCORE_CONTEXT_BAN 3
239 #define I915_CLIENT_SCORE_BANNED 9
240 /** ban_score: Accumulated score of all ctx bans and fast hangs. */
242 unsigned long hang_timestamp;
245 /* Interface history:
248 * 1.2: Add Power Management
249 * 1.3: Add vblank support
250 * 1.4: Fix cmdbuffer path, add heap destroy
251 * 1.5: Add vblank pipe configuration
252 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
253 * - Support vertical blank on secondary display pipe
255 #define DRIVER_MAJOR 1
256 #define DRIVER_MINOR 6
257 #define DRIVER_PATCHLEVEL 0
259 struct intel_overlay;
260 struct intel_overlay_error_state;
262 struct sdvo_device_mapping {
271 struct intel_connector;
272 struct intel_encoder;
273 struct intel_atomic_state;
274 struct intel_crtc_state;
275 struct intel_initial_plane_config;
279 struct intel_cdclk_state;
281 struct drm_i915_display_funcs {
282 void (*get_cdclk)(struct drm_i915_private *dev_priv,
283 struct intel_cdclk_state *cdclk_state);
284 void (*set_cdclk)(struct drm_i915_private *dev_priv,
285 const struct intel_cdclk_state *cdclk_state,
287 int (*get_fifo_size)(struct drm_i915_private *dev_priv,
288 enum i9xx_plane_id i9xx_plane);
289 int (*compute_pipe_wm)(struct intel_crtc_state *cstate);
290 int (*compute_intermediate_wm)(struct intel_crtc_state *newstate);
291 void (*initial_watermarks)(struct intel_atomic_state *state,
292 struct intel_crtc_state *cstate);
293 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
294 struct intel_crtc_state *cstate);
295 void (*optimize_watermarks)(struct intel_atomic_state *state,
296 struct intel_crtc_state *cstate);
297 int (*compute_global_watermarks)(struct intel_atomic_state *state);
298 void (*update_wm)(struct intel_crtc *crtc);
299 int (*modeset_calc_cdclk)(struct drm_atomic_state *state);
300 /* Returns the active state of the crtc, and if the crtc is active,
301 * fills out the pipe-config with the hw state. */
302 bool (*get_pipe_config)(struct intel_crtc *,
303 struct intel_crtc_state *);
304 void (*get_initial_plane_config)(struct intel_crtc *,
305 struct intel_initial_plane_config *);
306 int (*crtc_compute_clock)(struct intel_crtc *crtc,
307 struct intel_crtc_state *crtc_state);
308 void (*crtc_enable)(struct intel_crtc_state *pipe_config,
309 struct drm_atomic_state *old_state);
310 void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
311 struct drm_atomic_state *old_state);
312 void (*update_crtcs)(struct drm_atomic_state *state);
313 void (*audio_codec_enable)(struct intel_encoder *encoder,
314 const struct intel_crtc_state *crtc_state,
315 const struct drm_connector_state *conn_state);
316 void (*audio_codec_disable)(struct intel_encoder *encoder,
317 const struct intel_crtc_state *old_crtc_state,
318 const struct drm_connector_state *old_conn_state);
319 void (*fdi_link_train)(struct intel_crtc *crtc,
320 const struct intel_crtc_state *crtc_state);
321 void (*init_clock_gating)(struct drm_i915_private *dev_priv);
322 void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
323 /* clock updates for mode set */
325 /* render clock increase/decrease */
326 /* display clock increase/decrease */
327 /* pll clock increase/decrease */
329 int (*color_check)(struct intel_crtc_state *crtc_state);
331 * Program double buffered color management registers during
332 * vblank evasion. The registers should then latch during the
333 * next vblank start, alongside any other double buffered registers
334 * involved with the same commit.
336 void (*color_commit)(const struct intel_crtc_state *crtc_state);
338 * Load LUTs (and other single buffered color management
339 * registers). Will (hopefully) be called during the vblank
340 * following the latching of any double buffered registers
341 * involved with the same commit.
343 void (*load_luts)(const struct intel_crtc_state *crtc_state);
346 #define CSR_VERSION(major, minor) ((major) << 16 | (minor))
347 #define CSR_VERSION_MAJOR(version) ((version) >> 16)
348 #define CSR_VERSION_MINOR(version) ((version) & 0xffff)
351 struct work_struct work;
353 u32 required_version;
354 u32 max_fw_size; /* bytes */
356 u32 dmc_fw_size; /* dwords */
359 i915_reg_t mmioaddr[8];
363 intel_wakeref_t wakeref;
366 enum i915_cache_level {
368 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
369 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
370 caches, eg sampler/render caches, and the
371 large Last-Level-Cache. LLC is coherent with
372 the CPU, but L3 is only visible to the GPU. */
373 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
376 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
387 /* This is always the inner lock when overlapping with struct_mutex and
388 * it's the outer lock when overlapping with stolen_lock. */
391 unsigned int possible_framebuffer_bits;
392 unsigned int busy_bits;
393 unsigned int visible_pipes_mask;
394 struct intel_crtc *crtc;
396 struct drm_mm_node compressed_fb;
397 struct drm_mm_node *compressed_llb;
405 bool underrun_detected;
406 struct work_struct underrun_work;
409 * Due to the atomic rules we can't access some structures without the
410 * appropriate locking, so we cache information here in order to avoid
413 struct intel_fbc_state_cache {
414 struct i915_vma *vma;
418 unsigned int mode_flags;
419 u32 hsw_bdw_pixel_rate;
423 unsigned int rotation;
428 * Display surface base address adjustement for
429 * pageflips. Note that on gen4+ this only adjusts up
430 * to a tile, offsets within a tile are handled in
431 * the hw itself (with the TILEOFF register).
438 u16 pixel_blend_mode;
442 const struct drm_format_info *format;
448 * This structure contains everything that's relevant to program the
449 * hardware registers. When we want to figure out if we need to disable
450 * and re-enable FBC for a new configuration we just check if there's
451 * something different in the struct. The genx_fbc_activate functions
452 * are supposed to read from it in order to program the registers.
454 struct intel_fbc_reg_params {
455 struct i915_vma *vma;
460 enum i9xx_plane_id i9xx_plane;
461 unsigned int fence_y_offset;
465 const struct drm_format_info *format;
470 unsigned int gen9_wa_cfb_stride;
473 const char *no_fbc_reason;
477 * HIGH_RR is the highest eDP panel refresh rate read from EDID
478 * LOW_RR is the lowest eDP panel refresh rate found from EDID
479 * parsing for same resolution.
481 enum drrs_refresh_rate_type {
484 DRRS_MAX_RR, /* RR count */
487 enum drrs_support_type {
488 DRRS_NOT_SUPPORTED = 0,
489 STATIC_DRRS_SUPPORT = 1,
490 SEAMLESS_DRRS_SUPPORT = 2
496 struct delayed_work work;
498 unsigned busy_frontbuffer_bits;
499 enum drrs_refresh_rate_type refresh_rate_type;
500 enum drrs_support_type type;
506 #define I915_PSR_DEBUG_MODE_MASK 0x0f
507 #define I915_PSR_DEBUG_DEFAULT 0x00
508 #define I915_PSR_DEBUG_DISABLE 0x01
509 #define I915_PSR_DEBUG_ENABLE 0x02
510 #define I915_PSR_DEBUG_FORCE_PSR1 0x03
511 #define I915_PSR_DEBUG_IRQ 0x10
519 struct work_struct work;
520 unsigned busy_frontbuffer_bits;
521 bool sink_psr2_support;
523 bool colorimetry_support;
525 u8 sink_sync_latency;
526 ktime_t last_entry_attempt;
528 bool sink_not_reliable;
530 u16 su_x_granularity;
534 * Sorted by south display engine compatibility.
535 * If the new PCH comes with a south display engine that is not
536 * inherited from the latest item, please do not add it to the
537 * end. Instead, add it right after its "parent" PCH.
540 PCH_NOP = -1, /* PCH without south display */
541 PCH_NONE = 0, /* No PCH present */
542 PCH_IBX, /* Ibexpeak PCH */
543 PCH_CPT, /* Cougarpoint/Pantherpoint PCH */
544 PCH_LPT, /* Lynxpoint/Wildcatpoint PCH */
545 PCH_SPT, /* Sunrisepoint PCH */
546 PCH_KBP, /* Kaby Lake PCH */
547 PCH_CNP, /* Cannon/Comet Lake PCH */
548 PCH_ICP, /* Ice Lake PCH */
551 enum intel_sbi_destination {
556 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
557 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
558 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
559 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
560 #define QUIRK_INCREASE_T12_DELAY (1<<6)
561 #define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
564 struct intel_fbc_work;
567 struct i2c_adapter adapter;
568 #define GMBUS_FORCE_BIT_RETRY (1U << 31)
572 struct i2c_algo_bit_data bit_algo;
573 struct drm_i915_private *dev_priv;
576 struct i915_suspend_saved_registers {
579 u32 saveCACHE_MODE_0;
580 u32 saveMI_ARB_STATE;
584 u64 saveFENCE[I915_MAX_NUM_FENCES];
585 u32 savePCH_PORT_HOTPLUG;
589 struct vlv_s0ix_state {
596 u32 lra_limits[GEN7_LRA_LIMITS_REG_NUM];
597 u32 media_max_req_count;
598 u32 gfx_max_req_count;
630 /* Display 1 CZ domain */
635 u32 gt_scratch[GEN7_GT_SCRATCH_REG_NUM];
637 /* GT SA CZ domain */
644 /* Display 2 CZ domain */
651 struct intel_rps_ei {
659 * work, interrupts_enabled and pm_iir are protected by
662 struct work_struct work;
663 bool interrupts_enabled;
666 /* PM interrupt bits that should never be masked */
669 /* Frequencies are stored in potentially platform dependent multiples.
670 * In other words, *_freq needs to be multiplied by X to be interesting.
671 * Soft limits are those which are used for the dynamic reclocking done
672 * by the driver (raise frequencies under heavy loads, and lower for
673 * lighter loads). Hard limits are those imposed by the hardware.
675 * A distinction is made for overclocking, which is never enabled by
676 * default, and is considered to be above the hard limit if it's
679 u8 cur_freq; /* Current frequency (cached, may not == HW) */
680 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
681 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
682 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
683 u8 min_freq; /* AKA RPn. Minimum frequency */
684 u8 boost_freq; /* Frequency to request when wait boosting */
685 u8 idle_freq; /* Frequency to request when we are idle */
686 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
687 u8 rp1_freq; /* "less than" RP0 power/freqency */
688 u8 rp0_freq; /* Non-overclocked max frequency. */
689 u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
696 enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
697 unsigned int interactive;
699 u8 up_threshold; /* Current %busy required to uplock */
700 u8 down_threshold; /* Current %busy required to downclock */
704 atomic_t num_waiters;
707 /* manual wa residency calculations */
708 struct intel_rps_ei ei;
713 u64 prev_hw_residency[4];
714 u64 cur_residency[4];
717 struct intel_llc_pstate {
721 struct intel_gen6_power_mgmt {
722 struct intel_rps rps;
723 struct intel_rc6 rc6;
724 struct intel_llc_pstate llc_pstate;
727 /* defined intel_pm.c */
728 extern spinlock_t mchdev_lock;
730 struct intel_ilk_power_mgmt {
738 unsigned long last_time1;
739 unsigned long chipset_power;
742 unsigned long gfx_power;
749 struct drm_i915_private;
750 struct i915_power_well;
752 struct i915_power_well_ops {
754 * Synchronize the well's hw state to match the current sw state, for
755 * example enable/disable it based on the current refcount. Called
756 * during driver init and resume time, possibly after first calling
757 * the enable/disable handlers.
759 void (*sync_hw)(struct drm_i915_private *dev_priv,
760 struct i915_power_well *power_well);
762 * Enable the well and resources that depend on it (for example
763 * interrupts located on the well). Called after the 0->1 refcount
766 void (*enable)(struct drm_i915_private *dev_priv,
767 struct i915_power_well *power_well);
769 * Disable the well and resources that depend on it. Called after
770 * the 1->0 refcount transition.
772 void (*disable)(struct drm_i915_private *dev_priv,
773 struct i915_power_well *power_well);
774 /* Returns the hw enabled state. */
775 bool (*is_enabled)(struct drm_i915_private *dev_priv,
776 struct i915_power_well *power_well);
779 struct i915_power_well_regs {
786 /* Power well structure for haswell */
787 struct i915_power_well_desc {
791 /* unique identifier for this power well */
792 enum i915_power_well_id id;
794 * Arbitraty data associated with this power well. Platform and power
800 * request/status flag index in the PUNIT power well
801 * control/status registers.
809 const struct i915_power_well_regs *regs;
811 * request/status flag index in the power well
812 * constrol/status registers.
815 /* Mask of pipes whose IRQ logic is backed by the pw */
817 /* The pw is backing the VGA functionality */
821 * The pw is for an ICL+ TypeC PHY port in
827 const struct i915_power_well_ops *ops;
830 struct i915_power_well {
831 const struct i915_power_well_desc *desc;
832 /* power well enable/disable usage count */
834 /* cached hw enabled state */
838 struct i915_power_domains {
840 * Power wells needed for initialization at driver init and suspend
841 * time are on. They are kept on until after the first modeset.
844 bool display_core_suspended;
845 int power_well_count;
847 intel_wakeref_t wakeref;
850 int domain_use_count[POWER_DOMAIN_NUM];
851 struct i915_power_well *power_wells;
854 #define MAX_L3_SLICES 2
855 struct intel_l3_parity {
856 u32 *remap_info[MAX_L3_SLICES];
857 struct work_struct error_work;
862 /** Memory allocator for GTT stolen memory */
863 struct drm_mm stolen;
864 /** Protects the usage of the GTT stolen memory allocator. This is
865 * always the inner lock when overlapping with struct_mutex. */
866 struct mutex stolen_lock;
868 /* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
871 /** List of all objects in gtt_space. Used to restore gtt
872 * mappings on resume */
873 struct list_head bound_list;
875 * List of objects which are not bound to the GTT (thus
876 * are idle and not used by the GPU). These objects may or may
877 * not actually have any pages attached.
879 struct list_head unbound_list;
881 /** List of all objects in gtt_space, currently mmaped by userspace.
882 * All objects within this list must also be on bound_list.
884 struct list_head userfault_list;
887 * List of objects which are pending destruction.
889 struct llist_head free_list;
890 struct work_struct free_work;
891 spinlock_t free_lock;
893 * Count of objects pending destructions. Used to skip needlessly
894 * waiting on an RCU barrier if no objects are waiting to be freed.
899 * Small stash of WC pages
901 struct pagestash wc_stash;
904 * tmpfs instance used for shmem backed objects
906 struct vfsmount *gemfs;
908 /** PPGTT used for aliasing the PPGTT with the GTT */
909 struct i915_hw_ppgtt *aliasing_ppgtt;
911 struct notifier_block oom_notifier;
912 struct notifier_block vmap_notifier;
913 struct shrinker shrinker;
915 /** LRU list of objects with fence regs on them. */
916 struct list_head fence_list;
919 * Workqueue to fault in userptr pages, flushed by the execbuf
920 * when required but otherwise left to userspace to try again
923 struct workqueue_struct *userptr_wq;
925 u64 unordered_timeline;
927 /* the indicator for dispatch video commands on two BSD rings */
928 atomic_t bsd_engine_dispatch_index;
930 /** Bit 6 swizzling required for X tiling */
932 /** Bit 6 swizzling required for Y tiling */
935 /* accounting, useful for userland debugging */
936 spinlock_t object_stat_lock;
941 #define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
943 #define I915_RESET_TIMEOUT (10 * HZ) /* 10s */
944 #define I915_FENCE_TIMEOUT (10 * HZ) /* 10s */
946 #define I915_ENGINE_DEAD_TIMEOUT (4 * HZ) /* Seqno, head and subunits dead */
947 #define I915_SEQNO_DEAD_TIMEOUT (12 * HZ) /* Seqno dead with active head */
949 #define I915_ENGINE_WEDGED_TIMEOUT (60 * HZ) /* Reset but no recovery? */
951 struct ddi_vbt_port_info {
955 * This is an index in the HDMI/DVI DDI buffer translation table.
956 * The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
957 * populate this field.
959 #define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
967 u8 supports_typec_usb:1;
970 u8 alternate_aux_channel;
971 u8 alternate_ddc_pin;
975 int dp_max_link_rate; /* 0 for not limited by VBT */
978 enum psr_lines_to_wait {
979 PSR_0_LINES_TO_WAIT = 0,
985 struct intel_vbt_data {
986 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
987 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
990 unsigned int int_tv_support:1;
991 unsigned int lvds_dither:1;
992 unsigned int int_crt_support:1;
993 unsigned int lvds_use_ssc:1;
994 unsigned int int_lvds_support:1;
995 unsigned int display_clock_mode:1;
996 unsigned int fdi_rx_polarity_inverted:1;
997 unsigned int panel_type:4;
999 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
1000 enum drm_panel_orientation orientation;
1002 enum drrs_support_type drrs_type;
1012 struct edp_power_seq pps;
1018 bool require_aux_wakeup;
1020 enum psr_lines_to_wait lines_to_wait;
1021 int tp1_wakeup_time_us;
1022 int tp2_tp3_wakeup_time_us;
1023 int psr2_tp2_tp3_wakeup_time_us;
1029 bool active_low_pwm;
1030 u8 min_brightness; /* min_brightness/255 of max */
1031 u8 controller; /* brightness controller number */
1032 enum intel_backlight_type type;
1038 struct mipi_config *config;
1039 struct mipi_pps_data *pps;
1045 const u8 *sequence[MIPI_SEQ_MAX];
1046 u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
1047 enum drm_panel_orientation orientation;
1053 struct child_device_config *child_dev;
1055 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
1056 struct sdvo_device_mapping sdvo_mappings[2];
1059 enum intel_ddb_partitioning {
1061 INTEL_DDB_PART_5_6, /* IVB+ */
1064 struct intel_wm_level {
1072 struct ilk_wm_values {
1078 enum intel_ddb_partitioning partitioning;
1081 struct g4x_pipe_wm {
1082 u16 plane[I915_MAX_PLANES];
1092 struct vlv_wm_ddl_values {
1093 u8 plane[I915_MAX_PLANES];
1096 struct vlv_wm_values {
1097 struct g4x_pipe_wm pipe[3];
1098 struct g4x_sr_wm sr;
1099 struct vlv_wm_ddl_values ddl[3];
1104 struct g4x_wm_values {
1105 struct g4x_pipe_wm pipe[2];
1106 struct g4x_sr_wm sr;
1107 struct g4x_sr_wm hpll;
1113 struct skl_ddb_entry {
1114 u16 start, end; /* in number of blocks, 'end' is exclusive */
1117 static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
1119 return entry->end - entry->start;
1122 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
1123 const struct skl_ddb_entry *e2)
1125 if (e1->start == e2->start && e1->end == e2->end)
1131 struct skl_ddb_allocation {
1132 u8 enabled_slices; /* GEN11 has configurable 2 slices */
1135 struct skl_ddb_values {
1136 unsigned dirty_pipes;
1137 struct skl_ddb_allocation ddb;
1140 struct skl_wm_level {
1148 /* Stores plane specific WM parameters */
1149 struct skl_wm_params {
1150 bool x_tiled, y_tiled;
1155 u32 plane_pixel_rate;
1156 u32 y_min_scanlines;
1157 u32 plane_bytes_per_line;
1158 uint_fixed_16_16_t plane_blocks_per_line;
1159 uint_fixed_16_16_t y_tile_minimum;
1161 u32 dbuf_block_size;
1165 * This struct helps tracking the state needed for runtime PM, which puts the
1166 * device in PCI D3 state. Notice that when this happens, nothing on the
1167 * graphics device works, even register access, so we don't get interrupts nor
1170 * Every piece of our code that needs to actually touch the hardware needs to
1171 * either call intel_runtime_pm_get or call intel_display_power_get with the
1172 * appropriate power domain.
1174 * Our driver uses the autosuspend delay feature, which means we'll only really
1175 * suspend if we stay with zero refcount for a certain amount of time. The
1176 * default value is currently very conservative (see intel_runtime_pm_enable), but
1177 * it can be changed with the standard runtime PM files from sysfs.
1179 * The irqs_disabled variable becomes true exactly after we disable the IRQs and
1180 * goes back to false exactly before we reenable the IRQs. We use this variable
1181 * to check if someone is trying to enable/disable IRQs while they're supposed
1182 * to be disabled. This shouldn't happen and we'll print some error messages in
1185 * For more, read the Documentation/power/runtime_pm.txt.
1187 struct i915_runtime_pm {
1188 atomic_t wakeref_count;
1192 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
1194 * To aide detection of wakeref leaks and general misuse, we
1195 * track all wakeref holders. With manual markup (i.e. returning
1196 * a cookie to each rpm_get caller which they then supply to their
1197 * paired rpm_put) we can remove corresponding pairs of and keep
1198 * the array trimmed to active wakerefs.
1200 struct intel_runtime_pm_debug {
1203 depot_stack_handle_t last_acquire;
1204 depot_stack_handle_t last_release;
1206 depot_stack_handle_t *owners;
1207 unsigned long count;
1212 enum intel_pipe_crc_source {
1213 INTEL_PIPE_CRC_SOURCE_NONE,
1214 INTEL_PIPE_CRC_SOURCE_PLANE1,
1215 INTEL_PIPE_CRC_SOURCE_PLANE2,
1216 INTEL_PIPE_CRC_SOURCE_PLANE3,
1217 INTEL_PIPE_CRC_SOURCE_PLANE4,
1218 INTEL_PIPE_CRC_SOURCE_PLANE5,
1219 INTEL_PIPE_CRC_SOURCE_PLANE6,
1220 INTEL_PIPE_CRC_SOURCE_PLANE7,
1221 INTEL_PIPE_CRC_SOURCE_PIPE,
1222 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
1223 INTEL_PIPE_CRC_SOURCE_TV,
1224 INTEL_PIPE_CRC_SOURCE_DP_B,
1225 INTEL_PIPE_CRC_SOURCE_DP_C,
1226 INTEL_PIPE_CRC_SOURCE_DP_D,
1227 INTEL_PIPE_CRC_SOURCE_AUTO,
1228 INTEL_PIPE_CRC_SOURCE_MAX,
1231 #define INTEL_PIPE_CRC_ENTRIES_NR 128
1232 struct intel_pipe_crc {
1235 enum intel_pipe_crc_source source;
1238 struct i915_frontbuffer_tracking {
1242 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
1249 struct i915_virtual_gpu {
1254 /* used in computing the new watermarks state */
1255 struct intel_wm_config {
1256 unsigned int num_pipes_active;
1257 bool sprites_enabled;
1258 bool sprites_scaled;
1261 struct i915_oa_format {
1266 struct i915_oa_reg {
1271 struct i915_oa_config {
1272 char uuid[UUID_STRING_LEN + 1];
1275 const struct i915_oa_reg *mux_regs;
1277 const struct i915_oa_reg *b_counter_regs;
1278 u32 b_counter_regs_len;
1279 const struct i915_oa_reg *flex_regs;
1282 struct attribute_group sysfs_metric;
1283 struct attribute *attrs[2];
1284 struct device_attribute sysfs_metric_id;
1289 struct i915_perf_stream;
1292 * struct i915_perf_stream_ops - the OPs to support a specific stream type
1294 struct i915_perf_stream_ops {
1296 * @enable: Enables the collection of HW samples, either in response to
1297 * `I915_PERF_IOCTL_ENABLE` or implicitly called when stream is opened
1298 * without `I915_PERF_FLAG_DISABLED`.
1300 void (*enable)(struct i915_perf_stream *stream);
1303 * @disable: Disables the collection of HW samples, either in response
1304 * to `I915_PERF_IOCTL_DISABLE` or implicitly called before destroying
1307 void (*disable)(struct i915_perf_stream *stream);
1310 * @poll_wait: Call poll_wait, passing a wait queue that will be woken
1311 * once there is something ready to read() for the stream
1313 void (*poll_wait)(struct i915_perf_stream *stream,
1318 * @wait_unlocked: For handling a blocking read, wait until there is
1319 * something to ready to read() for the stream. E.g. wait on the same
1320 * wait queue that would be passed to poll_wait().
1322 int (*wait_unlocked)(struct i915_perf_stream *stream);
1325 * @read: Copy buffered metrics as records to userspace
1326 * **buf**: the userspace, destination buffer
1327 * **count**: the number of bytes to copy, requested by userspace
1328 * **offset**: zero at the start of the read, updated as the read
1329 * proceeds, it represents how many bytes have been copied so far and
1330 * the buffer offset for copying the next record.
1332 * Copy as many buffered i915 perf samples and records for this stream
1333 * to userspace as will fit in the given buffer.
1335 * Only write complete records; returning -%ENOSPC if there isn't room
1336 * for a complete record.
1338 * Return any error condition that results in a short read such as
1339 * -%ENOSPC or -%EFAULT, even though these may be squashed before
1340 * returning to userspace.
1342 int (*read)(struct i915_perf_stream *stream,
1348 * @destroy: Cleanup any stream specific resources.
1350 * The stream will always be disabled before this is called.
1352 void (*destroy)(struct i915_perf_stream *stream);
1356 * struct i915_perf_stream - state for a single open stream FD
1358 struct i915_perf_stream {
1360 * @dev_priv: i915 drm device
1362 struct drm_i915_private *dev_priv;
1365 * @link: Links the stream into ``&drm_i915_private->streams``
1367 struct list_head link;
1370 * @wakeref: As we keep the device awake while the perf stream is
1371 * active, we track our runtime pm reference for later release.
1373 intel_wakeref_t wakeref;
1376 * @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
1377 * properties given when opening a stream, representing the contents
1378 * of a single sample as read() by userspace.
1383 * @sample_size: Considering the configured contents of a sample
1384 * combined with the required header size, this is the total size
1385 * of a single sample record.
1390 * @ctx: %NULL if measuring system-wide across all contexts or a
1391 * specific context that is being monitored.
1393 struct i915_gem_context *ctx;
1396 * @enabled: Whether the stream is currently enabled, considering
1397 * whether the stream was opened in a disabled state and based
1398 * on `I915_PERF_IOCTL_ENABLE` and `I915_PERF_IOCTL_DISABLE` calls.
1403 * @ops: The callbacks providing the implementation of this specific
1404 * type of configured stream.
1406 const struct i915_perf_stream_ops *ops;
1409 * @oa_config: The OA configuration used by the stream.
1411 struct i915_oa_config *oa_config;
1415 * struct i915_oa_ops - Gen specific implementation of an OA unit stream
1417 struct i915_oa_ops {
1419 * @is_valid_b_counter_reg: Validates register's address for
1420 * programming boolean counters for a particular platform.
1422 bool (*is_valid_b_counter_reg)(struct drm_i915_private *dev_priv,
1426 * @is_valid_mux_reg: Validates register's address for programming mux
1427 * for a particular platform.
1429 bool (*is_valid_mux_reg)(struct drm_i915_private *dev_priv, u32 addr);
1432 * @is_valid_flex_reg: Validates register's address for programming
1433 * flex EU filtering for a particular platform.
1435 bool (*is_valid_flex_reg)(struct drm_i915_private *dev_priv, u32 addr);
1438 * @enable_metric_set: Selects and applies any MUX configuration to set
1439 * up the Boolean and Custom (B/C) counters that are part of the
1440 * counter reports being sampled. May apply system constraints such as
1441 * disabling EU clock gating as required.
1443 int (*enable_metric_set)(struct i915_perf_stream *stream);
1446 * @disable_metric_set: Remove system constraints associated with using
1449 void (*disable_metric_set)(struct drm_i915_private *dev_priv);
1452 * @oa_enable: Enable periodic sampling
1454 void (*oa_enable)(struct i915_perf_stream *stream);
1457 * @oa_disable: Disable periodic sampling
1459 void (*oa_disable)(struct i915_perf_stream *stream);
1462 * @read: Copy data from the circular OA buffer into a given userspace
1465 int (*read)(struct i915_perf_stream *stream,
1471 * @oa_hw_tail_read: read the OA tail pointer register
1473 * In particular this enables us to share all the fiddly code for
1474 * handling the OA unit tail pointer race that affects multiple
1477 u32 (*oa_hw_tail_read)(struct drm_i915_private *dev_priv);
1480 struct intel_cdclk_state {
1481 unsigned int cdclk, vco, ref, bypass;
1485 struct drm_i915_private {
1486 struct drm_device drm;
1488 const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
1489 struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
1490 struct intel_driver_caps caps;
1493 * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
1494 * end of stolen which we can optionally use to create GEM objects
1495 * backed by stolen memory. Note that stolen_usable_size tells us
1496 * exactly how much of this we are actually allowed to use, given that
1497 * some portion of it is in fact reserved for use by hardware functions.
1499 struct resource dsm;
1501 * Reseved portion of Data Stolen Memory
1503 struct resource dsm_reserved;
1506 * Stolen memory is segmented in hardware with different portions
1507 * offlimits to certain functions.
1509 * The drm_mm is initialised to the total accessible range, as found
1510 * from the PCI config. On Broadwell+, this is further restricted to
1511 * avoid the first page! The upper end of stolen memory is reserved for
1512 * hardware functions and similarly removed from the accessible range.
1514 resource_size_t stolen_usable_size; /* Total size minus reserved ranges */
1516 struct intel_uncore uncore;
1518 struct i915_virtual_gpu vgpu;
1520 struct intel_gvt *gvt;
1522 struct intel_wopcm wopcm;
1524 struct intel_huc huc;
1525 struct intel_guc guc;
1527 struct intel_csr csr;
1529 struct intel_gmbus gmbus[GMBUS_NUM_PINS];
1531 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1532 * controller on different i2c buses. */
1533 struct mutex gmbus_mutex;
1536 * Base address of where the gmbus and gpio blocks are located (either
1537 * on PCH or on SoC for platforms without PCH).
1541 /* MMIO base address for MIPI regs */
1548 wait_queue_head_t gmbus_wait_queue;
1550 struct pci_dev *bridge_dev;
1551 struct intel_engine_cs *engine[I915_NUM_ENGINES];
1552 /* Context used internally to idle the GPU and setup initial state */
1553 struct i915_gem_context *kernel_context;
1554 /* Context only to be used for injecting preemption commands */
1555 struct i915_gem_context *preempt_context;
1556 struct intel_engine_cs *engine_class[MAX_ENGINE_CLASS + 1]
1557 [MAX_ENGINE_INSTANCE + 1];
1559 struct resource mch_res;
1561 /* protects the irq masks */
1562 spinlock_t irq_lock;
1564 bool display_irqs_enabled;
1566 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1567 struct pm_qos_request pm_qos;
1569 /* Sideband mailbox protection */
1570 struct mutex sb_lock;
1572 /** Cached value of IMR to avoid reads in updating the bitfield */
1575 u32 de_irq_mask[I915_MAX_PIPES];
1582 u32 pipestat_irq_mask[I915_MAX_PIPES];
1584 struct i915_hotplug hotplug;
1585 struct intel_fbc fbc;
1586 struct i915_drrs drrs;
1587 struct intel_opregion opregion;
1588 struct intel_vbt_data vbt;
1590 bool preserve_bios_swizzle;
1593 struct intel_overlay *overlay;
1595 /* backlight registers and fields in struct intel_panel */
1596 struct mutex backlight_lock;
1599 bool no_aux_handshake;
1601 /* protects panel power sequencer state */
1602 struct mutex pps_mutex;
1604 struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
1605 int num_fence_regs; /* 8 on pre-965, 16 otherwise */
1607 unsigned int fsb_freq, mem_freq, is_ddr3;
1608 unsigned int skl_preferred_vco_freq;
1609 unsigned int max_cdclk_freq;
1611 unsigned int max_dotclk_freq;
1612 unsigned int rawclk_freq;
1613 unsigned int hpll_freq;
1614 unsigned int fdi_pll_freq;
1615 unsigned int czclk_freq;
1619 * The current logical cdclk state.
1620 * See intel_atomic_state.cdclk.logical
1622 * For reading holding any crtc lock is sufficient,
1623 * for writing must hold all of them.
1625 struct intel_cdclk_state logical;
1627 * The current actual cdclk state.
1628 * See intel_atomic_state.cdclk.actual
1630 struct intel_cdclk_state actual;
1631 /* The current hardware cdclk state */
1632 struct intel_cdclk_state hw;
1634 int force_min_cdclk;
1638 * wq - Driver workqueue for GEM.
1640 * NOTE: Work items scheduled here are not allowed to grab any modeset
1641 * locks, for otherwise the flushing done in the pageflip code will
1642 * result in deadlocks.
1644 struct workqueue_struct *wq;
1646 /* ordered wq for modesets */
1647 struct workqueue_struct *modeset_wq;
1649 /* Display functions */
1650 struct drm_i915_display_funcs display;
1652 /* PCH chipset type */
1653 enum intel_pch pch_type;
1654 unsigned short pch_id;
1656 unsigned long quirks;
1658 struct drm_atomic_state *modeset_restore_state;
1659 struct drm_modeset_acquire_ctx reset_ctx;
1661 struct i915_ggtt ggtt; /* VM representing the global address space */
1663 struct i915_gem_mm mm;
1664 DECLARE_HASHTABLE(mm_structs, 7);
1665 struct mutex mm_lock;
1667 struct intel_ppat ppat;
1669 /* Kernel Modesetting */
1671 struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1672 struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1674 #ifdef CONFIG_DEBUG_FS
1675 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1678 /* dpll and cdclk state is protected by connection_mutex */
1679 int num_shared_dpll;
1680 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1681 const struct intel_dpll_mgr *dpll_mgr;
1684 * dpll_lock serializes intel_{prepare,enable,disable}_shared_dpll.
1685 * Must be global rather than per dpll, because on some platforms
1686 * plls share registers.
1688 struct mutex dpll_lock;
1690 unsigned int active_crtcs;
1691 /* minimum acceptable cdclk for each pipe */
1692 int min_cdclk[I915_MAX_PIPES];
1693 /* minimum acceptable voltage level for each pipe */
1694 u8 min_voltage_level[I915_MAX_PIPES];
1696 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1698 struct i915_wa_list gt_wa_list;
1700 struct i915_frontbuffer_tracking fb_tracking;
1702 struct intel_atomic_helper {
1703 struct llist_head free_list;
1704 struct work_struct free_work;
1709 bool mchbar_need_disable;
1711 struct intel_l3_parity l3_parity;
1715 * Cannot be determined by PCIID. You must always read a register.
1720 * Protects RPS/RC6 register access and PCU communication.
1721 * Must be taken after struct_mutex if nested. Note that
1722 * this lock may be held for long periods of time when
1723 * talking to hw - so only take it when talking to hw!
1725 struct mutex pcu_lock;
1727 /* gen6+ GT PM state */
1728 struct intel_gen6_power_mgmt gt_pm;
1730 /* ilk-only ips/rps state. Everything in here is protected by the global
1731 * mchdev_lock in intel_pm.c */
1732 struct intel_ilk_power_mgmt ips;
1734 struct i915_power_domains power_domains;
1736 struct i915_psr psr;
1738 struct i915_gpu_error gpu_error;
1740 struct drm_i915_gem_object *vlv_pctx;
1742 /* list of fbdev register on this device */
1743 struct intel_fbdev *fbdev;
1744 struct work_struct fbdev_suspend_work;
1746 struct drm_property *broadcast_rgb_property;
1747 struct drm_property *force_audio_property;
1749 /* hda/i915 audio component */
1750 struct i915_audio_component *audio_component;
1751 bool audio_component_registered;
1753 * av_mutex - mutex for audio/video sync
1756 struct mutex av_mutex;
1757 int audio_power_refcount;
1761 struct list_head list;
1762 struct llist_head free_list;
1763 struct work_struct free_work;
1765 /* The hw wants to have a stable context identifier for the
1766 * lifetime of the context (for OA, PASID, faults, etc).
1767 * This is limited in execlists to 21 bits.
1770 #define MAX_CONTEXT_HW_ID (1<<21) /* exclusive */
1771 #define MAX_GUC_CONTEXT_HW_ID (1 << 20) /* exclusive */
1772 #define GEN11_MAX_CONTEXT_HW_ID (1<<11) /* exclusive */
1773 struct list_head hw_id_list;
1778 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
1779 u32 chv_phy_control;
1781 * Shadows for CHV DPLL_MD regs to keep the state
1782 * checker somewhat working in the presence hardware
1783 * crappiness (can't read out DPLL_MD for pipes B & C).
1785 u32 chv_dpll_md[I915_MAX_PIPES];
1789 bool power_domains_suspended;
1790 struct i915_suspend_saved_registers regfile;
1791 struct vlv_s0ix_state vlv_s0ix_state;
1794 I915_SAGV_UNKNOWN = 0,
1797 I915_SAGV_NOT_CONTROLLED
1802 * Raw watermark latency values:
1803 * in 0.1us units for WM0,
1804 * in 0.5us units for WM1+.
1813 * Raw watermark memory latency values
1814 * for SKL for all 8 levels
1819 /* current hardware state */
1821 struct ilk_wm_values hw;
1822 struct skl_ddb_values skl_hw;
1823 struct vlv_wm_values vlv;
1824 struct g4x_wm_values g4x;
1830 * Should be held around atomic WM register writing; also
1831 * protects * intel_crtc->wm.active and
1832 * cstate->wm.need_postvbl_update.
1834 struct mutex wm_mutex;
1837 * Set during HW readout of watermarks/DDB. Some platforms
1838 * need to know when we're still using BIOS-provided values
1839 * (which we don't fully trust).
1841 bool distrust_bios_wm;
1850 bool symmetric_memory;
1851 enum intel_dram_type {
1860 struct i915_runtime_pm runtime_pm;
1865 struct kobject *metrics_kobj;
1866 struct ctl_table_header *sysctl_header;
1869 * Lock associated with adding/modifying/removing OA configs
1870 * in dev_priv->perf.metrics_idr.
1872 struct mutex metrics_lock;
1875 * List of dynamic configurations, you need to hold
1876 * dev_priv->perf.metrics_lock to access it.
1878 struct idr metrics_idr;
1881 * Lock associated with anything below within this structure
1882 * except exclusive_stream.
1885 struct list_head streams;
1889 * The stream currently using the OA unit. If accessed
1890 * outside a syscall associated to its file
1891 * descriptor, you need to hold
1892 * dev_priv->drm.struct_mutex.
1894 struct i915_perf_stream *exclusive_stream;
1896 struct intel_context *pinned_ctx;
1897 u32 specific_ctx_id;
1898 u32 specific_ctx_id_mask;
1900 struct hrtimer poll_check_timer;
1901 wait_queue_head_t poll_wq;
1905 * For rate limiting any notifications of spurious
1906 * invalid OA reports
1908 struct ratelimit_state spurious_report_rs;
1911 int period_exponent;
1913 struct i915_oa_config test_config;
1916 struct i915_vma *vma;
1923 * Locks reads and writes to all head/tail state
1925 * Consider: the head and tail pointer state
1926 * needs to be read consistently from a hrtimer
1927 * callback (atomic context) and read() fop
1928 * (user context) with tail pointer updates
1929 * happening in atomic context and head updates
1930 * in user context and the (unlikely)
1931 * possibility of read() errors needing to
1932 * reset all head/tail state.
1934 * Note: Contention or performance aren't
1935 * currently a significant concern here
1936 * considering the relatively low frequency of
1937 * hrtimer callbacks (5ms period) and that
1938 * reads typically only happen in response to a
1939 * hrtimer event and likely complete before the
1942 * Note: This lock is not held *while* reading
1943 * and copying data to userspace so the value
1944 * of head observed in htrimer callbacks won't
1945 * represent any partial consumption of data.
1947 spinlock_t ptr_lock;
1950 * One 'aging' tail pointer and one 'aged'
1951 * tail pointer ready to used for reading.
1953 * Initial values of 0xffffffff are invalid
1954 * and imply that an update is required
1955 * (and should be ignored by an attempted
1963 * Index for the aged tail ready to read()
1966 unsigned int aged_tail_idx;
1969 * A monotonic timestamp for when the current
1970 * aging tail pointer was read; used to
1971 * determine when it is old enough to trust.
1973 u64 aging_timestamp;
1976 * Although we can always read back the head
1977 * pointer register, we prefer to avoid
1978 * trusting the HW state, just to avoid any
1979 * risk that some hardware condition could
1980 * somehow bump the head pointer unpredictably
1981 * and cause us to forward the wrong OA buffer
1982 * data to userspace.
1987 u32 gen7_latched_oastatus1;
1988 u32 ctx_oactxctrl_offset;
1989 u32 ctx_flexeu0_offset;
1992 * The RPT_ID/reason field for Gen8+ includes a bit
1993 * to determine if the CTX ID in the report is valid
1994 * but the specific bit differs between Gen 8 and 9
1996 u32 gen8_valid_ctx_bit;
1998 struct i915_oa_ops ops;
1999 const struct i915_oa_format *oa_formats;
2003 /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
2005 void (*resume)(struct drm_i915_private *);
2006 void (*cleanup_engine)(struct intel_engine_cs *engine);
2008 struct i915_gt_timelines {
2009 struct mutex mutex; /* protects list, tainted by GPU */
2010 struct list_head active_list;
2012 /* Pack multiple timelines' seqnos into the same page */
2013 spinlock_t hwsp_lock;
2014 struct list_head hwsp_free_list;
2017 intel_engine_mask_t active_engines;
2018 struct list_head active_rings;
2019 struct list_head closed_vma;
2020 u32 active_requests;
2023 * Is the GPU currently considered idle, or busy executing
2024 * userspace requests? Whilst idle, we allow runtime power
2025 * management to power down the hardware and display clocks.
2026 * In order to reduce the effect on performance, there
2027 * is a slight delay before we do so.
2029 intel_wakeref_t awake;
2032 * We leave the user IRQ off as much as possible,
2033 * but this means that requests will finish and never
2034 * be retired once the system goes idle. Set a timer to
2035 * fire periodically while the ring is running. When it
2036 * fires, go retire requests.
2038 struct delayed_work retire_work;
2041 * When we detect an idle GPU, we want to turn on
2042 * powersaving features. So once we see that there
2043 * are no more requests outstanding and no more
2044 * arrive within a small period of time, we fire
2045 * off the idle_work.
2047 struct delayed_work idle_work;
2049 ktime_t last_init_time;
2051 struct i915_vma *scratch;
2054 /* For i945gm vblank irq vs. C3 workaround */
2056 struct work_struct work;
2057 struct pm_qos_request pm_qos;
2058 u8 c3_disable_latency;
2062 /* perform PHY state sanity checks? */
2063 bool chv_phy_assert[2];
2067 /* Used to save the pipe-to-encoder mapping for audio */
2068 struct intel_encoder *av_enc_map[I915_MAX_PIPES];
2070 /* necessary resource sharing with HDMI LPE audio driver. */
2072 struct platform_device *platdev;
2076 struct i915_pmu pmu;
2078 struct i915_hdcp_comp_master *hdcp_master;
2079 bool hdcp_comp_added;
2081 /* Mutex to protect the above hdcp component related values. */
2082 struct mutex hdcp_comp_mutex;
2085 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
2086 * will be rejected. Instead look for a better place.
2090 struct dram_dimm_info {
2091 u8 size, width, ranks;
2094 struct dram_channel_info {
2095 struct dram_dimm_info dimm_l, dimm_s;
2100 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
2102 return container_of(dev, struct drm_i915_private, drm);
2105 static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
2107 return to_i915(dev_get_drvdata(kdev));
2110 static inline struct drm_i915_private *wopcm_to_i915(struct intel_wopcm *wopcm)
2112 return container_of(wopcm, struct drm_i915_private, wopcm);
2115 static inline struct drm_i915_private *guc_to_i915(struct intel_guc *guc)
2117 return container_of(guc, struct drm_i915_private, guc);
2120 static inline struct drm_i915_private *huc_to_i915(struct intel_huc *huc)
2122 return container_of(huc, struct drm_i915_private, huc);
2125 static inline struct drm_i915_private *uncore_to_i915(struct intel_uncore *uncore)
2127 return container_of(uncore, struct drm_i915_private, uncore);
2130 /* Simple iterator over all initialised engines */
2131 #define for_each_engine(engine__, dev_priv__, id__) \
2133 (id__) < I915_NUM_ENGINES; \
2135 for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
2137 /* Iterator over subset of engines selected by mask */
2138 #define for_each_engine_masked(engine__, dev_priv__, mask__, tmp__) \
2139 for ((tmp__) = (mask__) & INTEL_INFO(dev_priv__)->engine_mask; \
2141 ((engine__) = (dev_priv__)->engine[__mask_next_bit(tmp__)]), 1 : \
2144 enum hdmi_force_audio {
2145 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
2146 HDMI_AUDIO_OFF, /* force turn off HDMI audio */
2147 HDMI_AUDIO_AUTO, /* trust EDID */
2148 HDMI_AUDIO_ON, /* force turn on HDMI audio */
2151 #define I915_GTT_OFFSET_NONE ((u32)-1)
2154 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
2155 * considered to be the frontbuffer for the given plane interface-wise. This
2156 * doesn't mean that the hw necessarily already scans it out, but that any
2157 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
2159 * We have one bit per pipe and per scanout plane type.
2161 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
2162 #define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
2163 BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
2164 BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
2165 BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
2167 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
2168 BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
2169 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
2170 GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
2171 INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
2174 * Optimised SGL iterator for GEM objects
2176 static __always_inline struct sgt_iter {
2177 struct scatterlist *sgp;
2184 } __sgt_iter(struct scatterlist *sgl, bool dma) {
2185 struct sgt_iter s = { .sgp = sgl };
2188 s.max = s.curr = s.sgp->offset;
2189 s.max += s.sgp->length;
2191 s.dma = sg_dma_address(s.sgp);
2193 s.pfn = page_to_pfn(sg_page(s.sgp));
2199 static inline struct scatterlist *____sg_next(struct scatterlist *sg)
2202 if (unlikely(sg_is_chain(sg)))
2203 sg = sg_chain_ptr(sg);
2208 * __sg_next - return the next scatterlist entry in a list
2209 * @sg: The current sg entry
2212 * If the entry is the last, return NULL; otherwise, step to the next
2213 * element in the array (@sg@+1). If that's a chain pointer, follow it;
2214 * otherwise just return the pointer to the current element.
2216 static inline struct scatterlist *__sg_next(struct scatterlist *sg)
2218 return sg_is_last(sg) ? NULL : ____sg_next(sg);
2222 * for_each_sgt_dma - iterate over the DMA addresses of the given sg_table
2223 * @__dmap: DMA address (output)
2224 * @__iter: 'struct sgt_iter' (iterator state, internal)
2225 * @__sgt: sg_table to iterate over (input)
2227 #define for_each_sgt_dma(__dmap, __iter, __sgt) \
2228 for ((__iter) = __sgt_iter((__sgt)->sgl, true); \
2229 ((__dmap) = (__iter).dma + (__iter).curr); \
2230 (((__iter).curr += I915_GTT_PAGE_SIZE) >= (__iter).max) ? \
2231 (__iter) = __sgt_iter(__sg_next((__iter).sgp), true), 0 : 0)
2234 * for_each_sgt_page - iterate over the pages of the given sg_table
2235 * @__pp: page pointer (output)
2236 * @__iter: 'struct sgt_iter' (iterator state, internal)
2237 * @__sgt: sg_table to iterate over (input)
2239 #define for_each_sgt_page(__pp, __iter, __sgt) \
2240 for ((__iter) = __sgt_iter((__sgt)->sgl, false); \
2241 ((__pp) = (__iter).pfn == 0 ? NULL : \
2242 pfn_to_page((__iter).pfn + ((__iter).curr >> PAGE_SHIFT))); \
2243 (((__iter).curr += PAGE_SIZE) >= (__iter).max) ? \
2244 (__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0 : 0)
2246 bool i915_sg_trim(struct sg_table *orig_st);
2248 static inline unsigned int i915_sg_page_sizes(struct scatterlist *sg)
2250 unsigned int page_sizes;
2254 GEM_BUG_ON(sg->offset);
2255 GEM_BUG_ON(!IS_ALIGNED(sg->length, PAGE_SIZE));
2256 page_sizes |= sg->length;
2263 static inline unsigned int i915_sg_segment_size(void)
2265 unsigned int size = swiotlb_max_segment();
2268 return SCATTERLIST_MAX_SEGMENT;
2270 size = rounddown(size, PAGE_SIZE);
2271 /* swiotlb_max_segment_size can return 1 byte when it means one page. */
2272 if (size < PAGE_SIZE)
2278 #define INTEL_INFO(dev_priv) (&(dev_priv)->__info)
2279 #define RUNTIME_INFO(dev_priv) (&(dev_priv)->__runtime)
2280 #define DRIVER_CAPS(dev_priv) (&(dev_priv)->caps)
2282 #define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
2283 #define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
2285 #define REVID_FOREVER 0xff
2286 #define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
2288 #define INTEL_GEN_MASK(s, e) ( \
2289 BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
2290 BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
2291 GENMASK((e) - 1, (s) - 1))
2293 /* Returns true if Gen is in inclusive range [Start, End] */
2294 #define IS_GEN_RANGE(dev_priv, s, e) \
2295 (!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
2297 #define IS_GEN(dev_priv, n) \
2298 (BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
2299 INTEL_INFO(dev_priv)->gen == (n))
2302 * Return true if revision is in range [since,until] inclusive.
2304 * Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
2306 #define IS_REVID(p, since, until) \
2307 (INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
2309 static __always_inline unsigned int
2310 __platform_mask_index(const struct intel_runtime_info *info,
2311 enum intel_platform p)
2313 const unsigned int pbits =
2314 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
2316 /* Expand the platform_mask array if this fails. */
2317 BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
2318 pbits * ARRAY_SIZE(info->platform_mask));
2323 static __always_inline unsigned int
2324 __platform_mask_bit(const struct intel_runtime_info *info,
2325 enum intel_platform p)
2327 const unsigned int pbits =
2328 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
2330 return p % pbits + INTEL_SUBPLATFORM_BITS;
2334 intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
2336 const unsigned int pi = __platform_mask_index(info, p);
2338 return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
2341 static __always_inline bool
2342 IS_PLATFORM(const struct drm_i915_private *i915, enum intel_platform p)
2344 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
2345 const unsigned int pi = __platform_mask_index(info, p);
2346 const unsigned int pb = __platform_mask_bit(info, p);
2348 BUILD_BUG_ON(!__builtin_constant_p(p));
2350 return info->platform_mask[pi] & BIT(pb);
2353 static __always_inline bool
2354 IS_SUBPLATFORM(const struct drm_i915_private *i915,
2355 enum intel_platform p, unsigned int s)
2357 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
2358 const unsigned int pi = __platform_mask_index(info, p);
2359 const unsigned int pb = __platform_mask_bit(info, p);
2360 const unsigned int msb = BITS_PER_TYPE(info->platform_mask[0]) - 1;
2361 const u32 mask = info->platform_mask[pi];
2363 BUILD_BUG_ON(!__builtin_constant_p(p));
2364 BUILD_BUG_ON(!__builtin_constant_p(s));
2365 BUILD_BUG_ON((s) >= INTEL_SUBPLATFORM_BITS);
2367 /* Shift and test on the MSB position so sign flag can be used. */
2368 return ((mask << (msb - pb)) & (mask << (msb - s))) & BIT(msb);
2371 #define IS_MOBILE(dev_priv) (INTEL_INFO(dev_priv)->is_mobile)
2373 #define IS_I830(dev_priv) IS_PLATFORM(dev_priv, INTEL_I830)
2374 #define IS_I845G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I845G)
2375 #define IS_I85X(dev_priv) IS_PLATFORM(dev_priv, INTEL_I85X)
2376 #define IS_I865G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I865G)
2377 #define IS_I915G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915G)
2378 #define IS_I915GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915GM)
2379 #define IS_I945G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945G)
2380 #define IS_I945GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945GM)
2381 #define IS_I965G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965G)
2382 #define IS_I965GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965GM)
2383 #define IS_G45(dev_priv) IS_PLATFORM(dev_priv, INTEL_G45)
2384 #define IS_GM45(dev_priv) IS_PLATFORM(dev_priv, INTEL_GM45)
2385 #define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
2386 #define IS_PINEVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
2387 #define IS_G33(dev_priv) IS_PLATFORM(dev_priv, INTEL_G33)
2388 #define IS_IRONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IRONLAKE)
2389 #define IS_IRONLAKE_M(dev_priv) \
2390 (IS_PLATFORM(dev_priv, INTEL_IRONLAKE) && IS_MOBILE(dev_priv))
2391 #define IS_IVYBRIDGE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
2392 #define IS_IVB_GT1(dev_priv) (IS_IVYBRIDGE(dev_priv) && \
2393 INTEL_INFO(dev_priv)->gt == 1)
2394 #define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
2395 #define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
2396 #define IS_HASWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_HASWELL)
2397 #define IS_BROADWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROADWELL)
2398 #define IS_SKYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
2399 #define IS_BROXTON(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROXTON)
2400 #define IS_KABYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
2401 #define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
2402 #define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
2403 #define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
2404 #define IS_ICELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ICELAKE)
2405 #define IS_ELKHARTLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE)
2406 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
2407 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
2408 #define IS_BDW_ULT(dev_priv) \
2409 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULT)
2410 #define IS_BDW_ULX(dev_priv) \
2411 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULX)
2412 #define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
2413 INTEL_INFO(dev_priv)->gt == 3)
2414 #define IS_HSW_ULT(dev_priv) \
2415 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULT)
2416 #define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
2417 INTEL_INFO(dev_priv)->gt == 3)
2418 #define IS_HSW_GT1(dev_priv) (IS_HASWELL(dev_priv) && \
2419 INTEL_INFO(dev_priv)->gt == 1)
2420 /* ULX machines are also considered ULT. */
2421 #define IS_HSW_ULX(dev_priv) \
2422 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULX)
2423 #define IS_SKL_ULT(dev_priv) \
2424 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULT)
2425 #define IS_SKL_ULX(dev_priv) \
2426 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULX)
2427 #define IS_KBL_ULT(dev_priv) \
2428 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULT)
2429 #define IS_KBL_ULX(dev_priv) \
2430 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULX)
2431 #define IS_AML_ULX(dev_priv) \
2432 (IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_AML) || \
2433 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_AML))
2434 #define IS_SKL_GT2(dev_priv) (IS_SKYLAKE(dev_priv) && \
2435 INTEL_INFO(dev_priv)->gt == 2)
2436 #define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
2437 INTEL_INFO(dev_priv)->gt == 3)
2438 #define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
2439 INTEL_INFO(dev_priv)->gt == 4)
2440 #define IS_KBL_GT2(dev_priv) (IS_KABYLAKE(dev_priv) && \
2441 INTEL_INFO(dev_priv)->gt == 2)
2442 #define IS_KBL_GT3(dev_priv) (IS_KABYLAKE(dev_priv) && \
2443 INTEL_INFO(dev_priv)->gt == 3)
2444 #define IS_CFL_ULT(dev_priv) \
2445 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULT)
2446 #define IS_CFL_GT2(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2447 INTEL_INFO(dev_priv)->gt == 2)
2448 #define IS_CFL_GT3(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2449 INTEL_INFO(dev_priv)->gt == 3)
2450 #define IS_CNL_WITH_PORT_F(dev_priv) \
2451 IS_SUBPLATFORM(dev_priv, INTEL_CANNONLAKE, INTEL_SUBPLATFORM_PORTF)
2452 #define IS_ICL_WITH_PORT_F(dev_priv) \
2453 IS_SUBPLATFORM(dev_priv, INTEL_ICELAKE, INTEL_SUBPLATFORM_PORTF)
2455 #define IS_ALPHA_SUPPORT(intel_info) ((intel_info)->is_alpha_support)
2457 #define SKL_REVID_A0 0x0
2458 #define SKL_REVID_B0 0x1
2459 #define SKL_REVID_C0 0x2
2460 #define SKL_REVID_D0 0x3
2461 #define SKL_REVID_E0 0x4
2462 #define SKL_REVID_F0 0x5
2463 #define SKL_REVID_G0 0x6
2464 #define SKL_REVID_H0 0x7
2466 #define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
2468 #define BXT_REVID_A0 0x0
2469 #define BXT_REVID_A1 0x1
2470 #define BXT_REVID_B0 0x3
2471 #define BXT_REVID_B_LAST 0x8
2472 #define BXT_REVID_C0 0x9
2474 #define IS_BXT_REVID(dev_priv, since, until) \
2475 (IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
2477 #define KBL_REVID_A0 0x0
2478 #define KBL_REVID_B0 0x1
2479 #define KBL_REVID_C0 0x2
2480 #define KBL_REVID_D0 0x3
2481 #define KBL_REVID_E0 0x4
2483 #define IS_KBL_REVID(dev_priv, since, until) \
2484 (IS_KABYLAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2486 #define GLK_REVID_A0 0x0
2487 #define GLK_REVID_A1 0x1
2489 #define IS_GLK_REVID(dev_priv, since, until) \
2490 (IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2492 #define CNL_REVID_A0 0x0
2493 #define CNL_REVID_B0 0x1
2494 #define CNL_REVID_C0 0x2
2496 #define IS_CNL_REVID(p, since, until) \
2497 (IS_CANNONLAKE(p) && IS_REVID(p, since, until))
2499 #define ICL_REVID_A0 0x0
2500 #define ICL_REVID_A2 0x1
2501 #define ICL_REVID_B0 0x3
2502 #define ICL_REVID_B2 0x4
2503 #define ICL_REVID_C0 0x5
2505 #define IS_ICL_REVID(p, since, until) \
2506 (IS_ICELAKE(p) && IS_REVID(p, since, until))
2508 #define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
2509 #define IS_GEN9_LP(dev_priv) (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
2510 #define IS_GEN9_BC(dev_priv) (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
2512 #define HAS_ENGINE(dev_priv, id) (INTEL_INFO(dev_priv)->engine_mask & BIT(id))
2514 #define ENGINE_INSTANCES_MASK(dev_priv, first, count) ({ \
2515 unsigned int first__ = (first); \
2516 unsigned int count__ = (count); \
2517 (INTEL_INFO(dev_priv)->engine_mask & \
2518 GENMASK(first__ + count__ - 1, first__)) >> first__; \
2520 #define VDBOX_MASK(dev_priv) \
2521 ENGINE_INSTANCES_MASK(dev_priv, VCS0, I915_MAX_VCS)
2522 #define VEBOX_MASK(dev_priv) \
2523 ENGINE_INSTANCES_MASK(dev_priv, VECS0, I915_MAX_VECS)
2525 #define HAS_LLC(dev_priv) (INTEL_INFO(dev_priv)->has_llc)
2526 #define HAS_SNOOP(dev_priv) (INTEL_INFO(dev_priv)->has_snoop)
2527 #define HAS_EDRAM(dev_priv) ((dev_priv)->edram_size_mb)
2528 #define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
2529 IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
2531 #define HWS_NEEDS_PHYSICAL(dev_priv) (INTEL_INFO(dev_priv)->hws_needs_physical)
2533 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
2534 (INTEL_INFO(dev_priv)->has_logical_ring_contexts)
2535 #define HAS_LOGICAL_RING_ELSQ(dev_priv) \
2536 (INTEL_INFO(dev_priv)->has_logical_ring_elsq)
2537 #define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
2538 (INTEL_INFO(dev_priv)->has_logical_ring_preemption)
2540 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
2542 #define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_type)
2543 #define HAS_PPGTT(dev_priv) \
2544 (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
2545 #define HAS_FULL_PPGTT(dev_priv) \
2546 (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
2548 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
2549 GEM_BUG_ON((sizes) == 0); \
2550 ((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
2553 #define HAS_OVERLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_overlay)
2554 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
2555 (INTEL_INFO(dev_priv)->display.overlay_needs_physical)
2557 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
2558 #define HAS_BROKEN_CS_TLB(dev_priv) (IS_I830(dev_priv) || IS_I845G(dev_priv))
2560 /* WaRsDisableCoarsePowerGating:skl,cnl */
2561 #define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
2562 (IS_CANNONLAKE(dev_priv) || \
2563 IS_SKL_GT3(dev_priv) || IS_SKL_GT4(dev_priv))
2565 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
2566 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
2567 IS_GEMINILAKE(dev_priv) || \
2568 IS_KABYLAKE(dev_priv))
2570 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
2571 * rows, which changed the alignment requirements and fence programming.
2573 #define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
2574 !(IS_I915G(dev_priv) || \
2575 IS_I915GM(dev_priv)))
2576 #define SUPPORTS_TV(dev_priv) (INTEL_INFO(dev_priv)->display.supports_tv)
2577 #define I915_HAS_HOTPLUG(dev_priv) (INTEL_INFO(dev_priv)->display.has_hotplug)
2579 #define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
2580 #define HAS_FBC(dev_priv) (INTEL_INFO(dev_priv)->display.has_fbc)
2581 #define HAS_CUR_FBC(dev_priv) (!HAS_GMCH(dev_priv) && INTEL_GEN(dev_priv) >= 7)
2583 #define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
2585 #define HAS_DP_MST(dev_priv) (INTEL_INFO(dev_priv)->display.has_dp_mst)
2587 #define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
2588 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
2589 #define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
2590 #define HAS_TRANSCODER_EDP(dev_priv) (INTEL_INFO(dev_priv)->trans_offsets[TRANSCODER_EDP] != 0)
2592 #define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)
2593 #define HAS_RC6p(dev_priv) (INTEL_INFO(dev_priv)->has_rc6p)
2594 #define HAS_RC6pp(dev_priv) (false) /* HW was never validated */
2596 #define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
2598 #define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
2599 #define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
2601 #define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
2604 * For now, anything with a GuC requires uCode loading, and then supports
2605 * command submission once loaded. But these are logically independent
2606 * properties, so we have separate macros to test them.
2608 #define HAS_GUC(dev_priv) (INTEL_INFO(dev_priv)->has_guc)
2609 #define HAS_GUC_CT(dev_priv) (INTEL_INFO(dev_priv)->has_guc_ct)
2610 #define HAS_GUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
2611 #define HAS_GUC_SCHED(dev_priv) (HAS_GUC(dev_priv))
2613 /* For now, anything with a GuC has also HuC */
2614 #define HAS_HUC(dev_priv) (HAS_GUC(dev_priv))
2615 #define HAS_HUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
2617 /* Having a GuC is not the same as using a GuC */
2618 #define USES_GUC(dev_priv) intel_uc_is_using_guc(dev_priv)
2619 #define USES_GUC_SUBMISSION(dev_priv) intel_uc_is_using_guc_submission(dev_priv)
2620 #define USES_HUC(dev_priv) intel_uc_is_using_huc(dev_priv)
2622 #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
2624 #define INTEL_PCH_DEVICE_ID_MASK 0xff80
2625 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
2626 #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
2627 #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
2628 #define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
2629 #define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
2630 #define INTEL_PCH_WPT_DEVICE_ID_TYPE 0x8c80
2631 #define INTEL_PCH_WPT_LP_DEVICE_ID_TYPE 0x9c80
2632 #define INTEL_PCH_SPT_DEVICE_ID_TYPE 0xA100
2633 #define INTEL_PCH_SPT_LP_DEVICE_ID_TYPE 0x9D00
2634 #define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA280
2635 #define INTEL_PCH_CNP_DEVICE_ID_TYPE 0xA300
2636 #define INTEL_PCH_CNP_LP_DEVICE_ID_TYPE 0x9D80
2637 #define INTEL_PCH_CMP_DEVICE_ID_TYPE 0x0280
2638 #define INTEL_PCH_ICP_DEVICE_ID_TYPE 0x3480
2639 #define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
2640 #define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
2641 #define INTEL_PCH_QEMU_DEVICE_ID_TYPE 0x2900 /* qemu q35 has 2918 */
2643 #define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
2644 #define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
2645 #define HAS_PCH_ICP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_ICP)
2646 #define HAS_PCH_CNP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CNP)
2647 #define HAS_PCH_KBP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_KBP)
2648 #define HAS_PCH_SPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_SPT)
2649 #define HAS_PCH_LPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_LPT)
2650 #define HAS_PCH_LPT_LP(dev_priv) \
2651 (INTEL_PCH_ID(dev_priv) == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE || \
2652 INTEL_PCH_ID(dev_priv) == INTEL_PCH_WPT_LP_DEVICE_ID_TYPE)
2653 #define HAS_PCH_LPT_H(dev_priv) \
2654 (INTEL_PCH_ID(dev_priv) == INTEL_PCH_LPT_DEVICE_ID_TYPE || \
2655 INTEL_PCH_ID(dev_priv) == INTEL_PCH_WPT_DEVICE_ID_TYPE)
2656 #define HAS_PCH_CPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CPT)
2657 #define HAS_PCH_IBX(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_IBX)
2658 #define HAS_PCH_NOP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_NOP)
2659 #define HAS_PCH_SPLIT(dev_priv) (INTEL_PCH_TYPE(dev_priv) != PCH_NONE)
2661 #define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
2663 #define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
2665 /* DPF == dynamic parity feature */
2666 #define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
2667 #define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
2668 2 : HAS_L3_DPF(dev_priv))
2670 #define GT_FREQUENCY_MULTIPLIER 50
2671 #define GEN9_FREQ_SCALER 3
2673 #define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->num_pipes > 0)
2675 #include "i915_trace.h"
2677 static inline bool intel_vtd_active(void)
2679 #ifdef CONFIG_INTEL_IOMMU
2680 if (intel_iommu_gfx_mapped)
2686 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
2688 return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
2692 intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
2694 return IS_BROXTON(dev_priv) && intel_vtd_active();
2699 __i915_printk(struct drm_i915_private *dev_priv, const char *level,
2700 const char *fmt, ...);
2702 #define i915_report_error(dev_priv, fmt, ...) \
2703 __i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__)
2705 #ifdef CONFIG_COMPAT
2706 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
2709 #define i915_compat_ioctl NULL
2711 extern const struct dev_pm_ops i915_pm_ops;
2713 extern int i915_driver_load(struct pci_dev *pdev,
2714 const struct pci_device_id *ent);
2715 extern void i915_driver_unload(struct drm_device *dev);
2717 extern void intel_engine_init_hangcheck(struct intel_engine_cs *engine);
2718 extern void intel_hangcheck_init(struct drm_i915_private *dev_priv);
2719 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
2720 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
2721 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
2722 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
2723 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
2725 int intel_engines_init_mmio(struct drm_i915_private *dev_priv);
2726 int intel_engines_init(struct drm_i915_private *dev_priv);
2728 u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv);
2730 /* intel_hotplug.c */
2731 void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
2732 u32 pin_mask, u32 long_mask);
2733 void intel_hpd_init(struct drm_i915_private *dev_priv);
2734 void intel_hpd_init_work(struct drm_i915_private *dev_priv);
2735 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv);
2736 enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
2738 bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
2739 void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
2742 static inline void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
2744 unsigned long delay;
2746 if (unlikely(!i915_modparams.enable_hangcheck))
2749 /* Don't continually defer the hangcheck so that it is always run at
2750 * least once after work has been scheduled on any ring. Otherwise,
2751 * we will ignore a hung ring if a second ring is kept busy.
2754 delay = round_jiffies_up_relative(DRM_I915_HANGCHECK_JIFFIES);
2755 queue_delayed_work(system_long_wq,
2756 &dev_priv->gpu_error.hangcheck_work, delay);
2759 extern void intel_irq_init(struct drm_i915_private *dev_priv);
2760 extern void intel_irq_fini(struct drm_i915_private *dev_priv);
2761 int intel_irq_install(struct drm_i915_private *dev_priv);
2762 void intel_irq_uninstall(struct drm_i915_private *dev_priv);
2764 static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
2766 return dev_priv->gvt;
2769 static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
2771 return dev_priv->vgpu.active;
2774 u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
2777 i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2781 i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2784 void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
2785 void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
2786 void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
2789 void ilk_update_display_irq(struct drm_i915_private *dev_priv,
2791 u32 enabled_irq_mask);
2793 ilk_enable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
2795 ilk_update_display_irq(dev_priv, bits, bits);
2798 ilk_disable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
2800 ilk_update_display_irq(dev_priv, bits, 0);
2802 void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
2805 u32 enabled_irq_mask);
2806 static inline void bdw_enable_pipe_irq(struct drm_i915_private *dev_priv,
2807 enum pipe pipe, u32 bits)
2809 bdw_update_pipe_irq(dev_priv, pipe, bits, bits);
2811 static inline void bdw_disable_pipe_irq(struct drm_i915_private *dev_priv,
2812 enum pipe pipe, u32 bits)
2814 bdw_update_pipe_irq(dev_priv, pipe, bits, 0);
2816 void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
2818 u32 enabled_irq_mask);
2820 ibx_enable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
2822 ibx_display_interrupt_update(dev_priv, bits, bits);
2825 ibx_disable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
2827 ibx_display_interrupt_update(dev_priv, bits, 0);
2831 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
2832 struct drm_file *file_priv);
2833 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
2834 struct drm_file *file_priv);
2835 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
2836 struct drm_file *file_priv);
2837 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
2838 struct drm_file *file_priv);
2839 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
2840 struct drm_file *file_priv);
2841 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
2842 struct drm_file *file_priv);
2843 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
2844 struct drm_file *file_priv);
2845 int i915_gem_execbuffer_ioctl(struct drm_device *dev, void *data,
2846 struct drm_file *file_priv);
2847 int i915_gem_execbuffer2_ioctl(struct drm_device *dev, void *data,
2848 struct drm_file *file_priv);
2849 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
2850 struct drm_file *file_priv);
2851 int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
2852 struct drm_file *file);
2853 int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
2854 struct drm_file *file);
2855 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
2856 struct drm_file *file_priv);
2857 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
2858 struct drm_file *file_priv);
2859 int i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
2860 struct drm_file *file_priv);
2861 int i915_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
2862 struct drm_file *file_priv);
2863 int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
2864 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
2865 int i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
2866 struct drm_file *file);
2867 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
2868 struct drm_file *file_priv);
2869 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
2870 struct drm_file *file_priv);
2871 void i915_gem_sanitize(struct drm_i915_private *i915);
2872 int i915_gem_init_early(struct drm_i915_private *dev_priv);
2873 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
2874 void i915_gem_load_init_fences(struct drm_i915_private *dev_priv);
2875 int i915_gem_freeze(struct drm_i915_private *dev_priv);
2876 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
2878 void i915_gem_object_init(struct drm_i915_gem_object *obj,
2879 const struct drm_i915_gem_object_ops *ops);
2880 struct drm_i915_gem_object *
2881 i915_gem_object_create(struct drm_i915_private *dev_priv, u64 size);
2882 struct drm_i915_gem_object *
2883 i915_gem_object_create_from_data(struct drm_i915_private *dev_priv,
2884 const void *data, size_t size);
2885 void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file);
2886 void i915_gem_free_object(struct drm_gem_object *obj);
2888 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
2890 if (!atomic_read(&i915->mm.free_count))
2893 /* A single pass should suffice to release all the freed objects (along
2894 * most call paths) , but be a little more paranoid in that freeing
2895 * the objects does take a little amount of time, during which the rcu
2896 * callbacks could have added new objects into the freed list, and
2897 * armed the work again.
2901 } while (flush_work(&i915->mm.free_work));
2904 static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
2907 * Similar to objects above (see i915_gem_drain_freed-objects), in
2908 * general we have workers that are armed by RCU and then rearm
2909 * themselves in their callbacks. To be paranoid, we need to
2910 * drain the workqueue a second time after waiting for the RCU
2911 * grace period so that we catch work queued via RCU from the first
2912 * pass. As neither drain_workqueue() nor flush_workqueue() report
2913 * a result, we make an assumption that we only don't require more
2914 * than 2 passes to catch all recursive RCU delayed work.
2920 drain_workqueue(i915->wq);
2924 struct i915_vma * __must_check
2925 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
2926 const struct i915_ggtt_view *view,
2931 int i915_gem_object_unbind(struct drm_i915_gem_object *obj);
2932 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
2934 void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
2936 static inline int __sg_page_count(const struct scatterlist *sg)
2938 return sg->length >> PAGE_SHIFT;
2941 struct scatterlist *
2942 i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
2943 unsigned int n, unsigned int *offset);
2946 i915_gem_object_get_page(struct drm_i915_gem_object *obj,
2950 i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj,
2954 i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
2957 void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
2958 struct sg_table *pages,
2959 unsigned int sg_page_sizes);
2960 int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
2962 static inline int __must_check
2963 i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2965 might_lock(&obj->mm.lock);
2967 if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
2970 return __i915_gem_object_get_pages(obj);
2974 i915_gem_object_has_pages(struct drm_i915_gem_object *obj)
2976 return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages));
2980 __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2982 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
2984 atomic_inc(&obj->mm.pages_pin_count);
2988 i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
2990 return atomic_read(&obj->mm.pages_pin_count);
2994 __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
2996 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
2997 GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
2999 atomic_dec(&obj->mm.pages_pin_count);
3003 i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
3005 __i915_gem_object_unpin_pages(obj);
3008 enum i915_mm_subclass { /* lockdep subclass for obj->mm.lock/struct_mutex */
3010 I915_MM_SHRINKER /* called "recursively" from direct-reclaim-esque */
3013 int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj,
3014 enum i915_mm_subclass subclass);
3015 void __i915_gem_object_invalidate(struct drm_i915_gem_object *obj);
3017 enum i915_map_type {
3020 #define I915_MAP_OVERRIDE BIT(31)
3021 I915_MAP_FORCE_WB = I915_MAP_WB | I915_MAP_OVERRIDE,
3022 I915_MAP_FORCE_WC = I915_MAP_WC | I915_MAP_OVERRIDE,
3025 static inline enum i915_map_type
3026 i915_coherent_map_type(struct drm_i915_private *i915)
3028 return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
3032 * i915_gem_object_pin_map - return a contiguous mapping of the entire object
3033 * @obj: the object to map into kernel address space
3034 * @type: the type of mapping, used to select pgprot_t
3036 * Calls i915_gem_object_pin_pages() to prevent reaping of the object's
3037 * pages and then returns a contiguous mapping of the backing storage into
3038 * the kernel address space. Based on the @type of mapping, the PTE will be
3039 * set to either WriteBack or WriteCombine (via pgprot_t).
3041 * The caller is responsible for calling i915_gem_object_unpin_map() when the
3042 * mapping is no longer required.
3044 * Returns the pointer through which to access the mapped object, or an
3045 * ERR_PTR() on error.
3047 void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
3048 enum i915_map_type type);
3050 void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj,
3051 unsigned long offset,
3052 unsigned long size);
3053 static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj)
3055 __i915_gem_object_flush_map(obj, 0, obj->base.size);
3059 * i915_gem_object_unpin_map - releases an earlier mapping
3060 * @obj: the object to unmap
3062 * After pinning the object and mapping its pages, once you are finished
3063 * with your access, call i915_gem_object_unpin_map() to release the pin
3064 * upon the mapping. Once the pin count reaches zero, that mapping may be
3067 static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
3069 i915_gem_object_unpin_pages(obj);
3072 int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
3073 unsigned int *needs_clflush);
3074 int i915_gem_obj_prepare_shmem_write(struct drm_i915_gem_object *obj,
3075 unsigned int *needs_clflush);
3076 #define CLFLUSH_BEFORE BIT(0)
3077 #define CLFLUSH_AFTER BIT(1)
3078 #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER)
3081 i915_gem_obj_finish_shmem_access(struct drm_i915_gem_object *obj)
3083 i915_gem_object_unpin_pages(obj);
3086 static inline int __must_check
3087 i915_mutex_lock_interruptible(struct drm_device *dev)
3089 return mutex_lock_interruptible(&dev->struct_mutex);
3092 int i915_gem_dumb_create(struct drm_file *file_priv,
3093 struct drm_device *dev,
3094 struct drm_mode_create_dumb *args);
3095 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
3096 u32 handle, u64 *offset);
3097 int i915_gem_mmap_gtt_version(void);
3099 void i915_gem_track_fb(struct drm_i915_gem_object *old,
3100 struct drm_i915_gem_object *new,
3101 unsigned frontbuffer_bits);
3103 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
3105 static inline bool __i915_wedged(struct i915_gpu_error *error)
3107 return unlikely(test_bit(I915_WEDGED, &error->flags));
3110 static inline bool i915_reset_failed(struct drm_i915_private *i915)
3112 return __i915_wedged(&i915->gpu_error);
3115 static inline u32 i915_reset_count(struct i915_gpu_error *error)
3117 return READ_ONCE(error->reset_count);
3120 static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
3121 struct intel_engine_cs *engine)
3123 return READ_ONCE(error->reset_engine_count[engine->id]);
3126 void i915_gem_set_wedged(struct drm_i915_private *dev_priv);
3127 bool i915_gem_unset_wedged(struct drm_i915_private *dev_priv);
3129 void i915_gem_init_mmio(struct drm_i915_private *i915);
3130 int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
3131 int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv);
3132 void i915_gem_init_swizzling(struct drm_i915_private *dev_priv);
3133 void i915_gem_fini(struct drm_i915_private *dev_priv);
3134 void i915_gem_cleanup_engines(struct drm_i915_private *dev_priv);
3135 int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
3136 unsigned int flags, long timeout);
3137 void i915_gem_suspend(struct drm_i915_private *dev_priv);
3138 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
3139 void i915_gem_resume(struct drm_i915_private *dev_priv);
3140 vm_fault_t i915_gem_fault(struct vm_fault *vmf);
3141 int i915_gem_object_wait(struct drm_i915_gem_object *obj,
3144 int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
3146 const struct i915_sched_attr *attr);
3147 #define I915_PRIORITY_DISPLAY I915_USER_PRIORITY(I915_PRIORITY_MAX)
3150 i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
3152 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write);
3154 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
3155 struct i915_vma * __must_check
3156 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
3158 const struct i915_ggtt_view *view,
3159 unsigned int flags);
3160 void i915_gem_object_unpin_from_display_plane(struct i915_vma *vma);
3161 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
3163 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
3164 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
3166 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
3167 enum i915_cache_level cache_level);
3169 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
3170 struct dma_buf *dma_buf);
3172 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
3173 struct drm_gem_object *gem_obj, int flags);
3175 static inline struct i915_hw_ppgtt *
3176 i915_vm_to_ppgtt(struct i915_address_space *vm)
3178 return container_of(vm, struct i915_hw_ppgtt, vm);
3181 /* i915_gem_fence_reg.c */
3182 struct drm_i915_fence_reg *
3183 i915_reserve_fence(struct drm_i915_private *dev_priv);
3184 void i915_unreserve_fence(struct drm_i915_fence_reg *fence);
3186 void i915_gem_restore_fences(struct drm_i915_private *dev_priv);
3188 void i915_gem_detect_bit_6_swizzle(struct drm_i915_private *dev_priv);
3189 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj,
3190 struct sg_table *pages);
3191 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj,
3192 struct sg_table *pages);
3194 static inline struct i915_gem_context *
3195 __i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
3197 return idr_find(&file_priv->context_idr, id);
3200 static inline struct i915_gem_context *
3201 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
3203 struct i915_gem_context *ctx;
3206 ctx = __i915_gem_context_lookup_rcu(file_priv, id);
3207 if (ctx && !kref_get_unless_zero(&ctx->ref))
3214 int i915_perf_open_ioctl(struct drm_device *dev, void *data,
3215 struct drm_file *file);
3216 int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
3217 struct drm_file *file);
3218 int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
3219 struct drm_file *file);
3220 void i915_oa_init_reg_state(struct intel_engine_cs *engine,
3221 struct intel_context *ce,
3224 /* i915_gem_evict.c */
3225 int __must_check i915_gem_evict_something(struct i915_address_space *vm,
3226 u64 min_size, u64 alignment,
3227 unsigned cache_level,
3230 int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
3231 struct drm_mm_node *node,
3232 unsigned int flags);
3233 int i915_gem_evict_vm(struct i915_address_space *vm);
3235 void i915_gem_flush_ggtt_writes(struct drm_i915_private *dev_priv);
3237 /* belongs in i915_gem_gtt.h */
3238 static inline void i915_gem_chipset_flush(struct drm_i915_private *dev_priv)
3241 if (INTEL_GEN(dev_priv) < 6)
3242 intel_gtt_chipset_flush();
3245 /* i915_gem_stolen.c */
3246 int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv,
3247 struct drm_mm_node *node, u64 size,
3248 unsigned alignment);
3249 int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
3250 struct drm_mm_node *node, u64 size,
3251 unsigned alignment, u64 start,
3253 void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
3254 struct drm_mm_node *node);
3255 int i915_gem_init_stolen(struct drm_i915_private *dev_priv);
3256 void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv);
3257 struct drm_i915_gem_object *
3258 i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
3259 resource_size_t size);
3260 struct drm_i915_gem_object *
3261 i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv,
3262 resource_size_t stolen_offset,
3263 resource_size_t gtt_offset,
3264 resource_size_t size);
3266 /* i915_gem_internal.c */
3267 struct drm_i915_gem_object *
3268 i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
3271 /* i915_gem_shrinker.c */
3272 unsigned long i915_gem_shrink(struct drm_i915_private *i915,
3273 unsigned long target,
3274 unsigned long *nr_scanned,
3276 #define I915_SHRINK_PURGEABLE 0x1
3277 #define I915_SHRINK_UNBOUND 0x2
3278 #define I915_SHRINK_BOUND 0x4
3279 #define I915_SHRINK_ACTIVE 0x8
3280 #define I915_SHRINK_VMAPS 0x10
3281 unsigned long i915_gem_shrink_all(struct drm_i915_private *i915);
3282 void i915_gem_shrinker_register(struct drm_i915_private *i915);
3283 void i915_gem_shrinker_unregister(struct drm_i915_private *i915);
3284 void i915_gem_shrinker_taints_mutex(struct drm_i915_private *i915,
3285 struct mutex *mutex);
3287 /* i915_gem_tiling.c */
3288 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
3290 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
3292 return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
3293 i915_gem_object_is_tiled(obj);
3296 u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
3297 unsigned int tiling, unsigned int stride);
3298 u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
3299 unsigned int tiling, unsigned int stride);
3301 /* i915_debugfs.c */
3302 #ifdef CONFIG_DEBUG_FS
3303 int i915_debugfs_register(struct drm_i915_private *dev_priv);
3304 int i915_debugfs_connector_add(struct drm_connector *connector);
3305 void intel_display_crc_init(struct drm_i915_private *dev_priv);
3307 static inline int i915_debugfs_register(struct drm_i915_private *dev_priv) {return 0;}
3308 static inline int i915_debugfs_connector_add(struct drm_connector *connector)
3310 static inline void intel_display_crc_init(struct drm_i915_private *dev_priv) {}
3313 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
3315 /* i915_cmd_parser.c */
3316 int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
3317 void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
3318 void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
3319 int intel_engine_cmd_parser(struct intel_engine_cs *engine,
3320 struct drm_i915_gem_object *batch_obj,
3321 struct drm_i915_gem_object *shadow_batch_obj,
3322 u32 batch_start_offset,
3327 extern void i915_perf_init(struct drm_i915_private *dev_priv);
3328 extern void i915_perf_fini(struct drm_i915_private *dev_priv);
3329 extern void i915_perf_register(struct drm_i915_private *dev_priv);
3330 extern void i915_perf_unregister(struct drm_i915_private *dev_priv);
3332 /* i915_suspend.c */
3333 extern int i915_save_state(struct drm_i915_private *dev_priv);
3334 extern int i915_restore_state(struct drm_i915_private *dev_priv);
3337 void i915_setup_sysfs(struct drm_i915_private *dev_priv);
3338 void i915_teardown_sysfs(struct drm_i915_private *dev_priv);
3340 /* intel_lpe_audio.c */
3341 int intel_lpe_audio_init(struct drm_i915_private *dev_priv);
3342 void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
3343 void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
3344 void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
3345 enum pipe pipe, enum port port,
3346 const void *eld, int ls_clock, bool dp_output);
3349 extern int intel_setup_gmbus(struct drm_i915_private *dev_priv);
3350 extern void intel_teardown_gmbus(struct drm_i915_private *dev_priv);
3351 extern bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
3353 extern int intel_gmbus_output_aksv(struct i2c_adapter *adapter);
3355 extern struct i2c_adapter *
3356 intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
3357 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
3358 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
3359 static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
3361 return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
3363 extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
3366 void intel_bios_init(struct drm_i915_private *dev_priv);
3367 void intel_bios_cleanup(struct drm_i915_private *dev_priv);
3368 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
3369 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
3370 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
3371 bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
3372 bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
3373 bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
3374 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
3375 bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
3377 bool intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv,
3379 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv, enum port port);
3383 extern void intel_register_dsm_handler(void);
3384 extern void intel_unregister_dsm_handler(void);
3386 static inline void intel_register_dsm_handler(void) { return; }
3387 static inline void intel_unregister_dsm_handler(void) { return; }
3388 #endif /* CONFIG_ACPI */
3390 /* intel_device_info.c */
3391 static inline struct intel_device_info *
3392 mkwrite_device_info(struct drm_i915_private *dev_priv)
3394 return (struct intel_device_info *)INTEL_INFO(dev_priv);
3397 static inline struct intel_sseu
3398 intel_device_default_sseu(struct drm_i915_private *i915)
3400 const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
3401 struct intel_sseu value = {
3402 .slice_mask = sseu->slice_mask,
3403 .subslice_mask = sseu->subslice_mask[0],
3404 .min_eus_per_subslice = sseu->max_eus_per_subslice,
3405 .max_eus_per_subslice = sseu->max_eus_per_subslice,
3412 extern void intel_modeset_init_hw(struct drm_device *dev);
3413 extern int intel_modeset_init(struct drm_device *dev);
3414 extern void intel_modeset_cleanup(struct drm_device *dev);
3415 extern int intel_modeset_vga_set_state(struct drm_i915_private *dev_priv,
3417 extern void intel_display_resume(struct drm_device *dev);
3418 extern void i915_redisable_vga(struct drm_i915_private *dev_priv);
3419 extern void i915_redisable_vga_power_on(struct drm_i915_private *dev_priv);
3420 extern bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val);
3421 extern void intel_init_pch_refclk(struct drm_i915_private *dev_priv);
3422 extern int intel_set_rps(struct drm_i915_private *dev_priv, u8 val);
3423 extern void intel_rps_mark_interactive(struct drm_i915_private *i915,
3425 extern bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv,
3427 void intel_dsc_enable(struct intel_encoder *encoder,
3428 const struct intel_crtc_state *crtc_state);
3429 void intel_dsc_disable(const struct intel_crtc_state *crtc_state);
3431 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
3432 struct drm_file *file);
3435 extern struct intel_overlay_error_state *
3436 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
3437 extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
3438 struct intel_overlay_error_state *error);
3440 extern struct intel_display_error_state *
3441 intel_display_capture_error_state(struct drm_i915_private *dev_priv);
3442 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
3443 struct intel_display_error_state *error);
3445 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
3446 int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv, u32 mbox,
3447 u32 val, int fast_timeout_us,
3448 int slow_timeout_ms);
3449 #define sandybridge_pcode_write(dev_priv, mbox, val) \
3450 sandybridge_pcode_write_timeout(dev_priv, mbox, val, 500, 0)
3452 int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
3453 u32 reply_mask, u32 reply, int timeout_base_ms);
3455 /* intel_sideband.c */
3456 u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
3457 int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
3458 u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
3459 u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
3460 void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
3461 u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
3462 void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3463 u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
3464 void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3465 u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
3466 void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3467 u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
3468 void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
3469 u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
3470 enum intel_sbi_destination destination);
3471 void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
3472 enum intel_sbi_destination destination);
3473 u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
3474 void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3476 /* intel_dpio_phy.c */
3477 void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
3478 enum dpio_phy *phy, enum dpio_channel *ch);
3479 void bxt_ddi_phy_set_signal_level(struct drm_i915_private *dev_priv,
3480 enum port port, u32 margin, u32 scale,
3481 u32 enable, u32 deemphasis);
3482 void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
3483 void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
3484 bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
3486 bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
3488 u8 bxt_ddi_phy_calc_lane_lat_optim_mask(u8 lane_count);
3489 void bxt_ddi_phy_set_lane_optim_mask(struct intel_encoder *encoder,
3490 u8 lane_lat_optim_mask);
3491 u8 bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder *encoder);
3493 void chv_set_phy_signal_level(struct intel_encoder *encoder,
3494 u32 deemph_reg_value, u32 margin_reg_value,
3495 bool uniq_trans_scale);
3496 void chv_data_lane_soft_reset(struct intel_encoder *encoder,
3497 const struct intel_crtc_state *crtc_state,
3499 void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
3500 const struct intel_crtc_state *crtc_state);
3501 void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
3502 const struct intel_crtc_state *crtc_state);
3503 void chv_phy_release_cl2_override(struct intel_encoder *encoder);
3504 void chv_phy_post_pll_disable(struct intel_encoder *encoder,
3505 const struct intel_crtc_state *old_crtc_state);
3507 void vlv_set_phy_signal_level(struct intel_encoder *encoder,
3508 u32 demph_reg_value, u32 preemph_reg_value,
3509 u32 uniqtranscale_reg_value, u32 tx3_demph);
3510 void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
3511 const struct intel_crtc_state *crtc_state);
3512 void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
3513 const struct intel_crtc_state *crtc_state);
3514 void vlv_phy_reset_lanes(struct intel_encoder *encoder,
3515 const struct intel_crtc_state *old_crtc_state);
3517 /* intel_combo_phy.c */
3518 void icl_combo_phys_init(struct drm_i915_private *dev_priv);
3519 void icl_combo_phys_uninit(struct drm_i915_private *dev_priv);
3520 void cnl_combo_phys_init(struct drm_i915_private *dev_priv);
3521 void cnl_combo_phys_uninit(struct drm_i915_private *dev_priv);
3523 int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
3524 int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
3525 u64 intel_rc6_residency_ns(struct drm_i915_private *dev_priv,
3526 const i915_reg_t reg);
3528 u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat1);
3530 static inline u64 intel_rc6_residency_us(struct drm_i915_private *dev_priv,
3531 const i915_reg_t reg)
3533 return DIV_ROUND_UP_ULL(intel_rc6_residency_ns(dev_priv, reg), 1000);
3536 #define __I915_REG_OP(op__, dev_priv__, ...) \
3537 intel_uncore_##op__(&(dev_priv__)->uncore, __VA_ARGS__)
3539 #define I915_READ8(reg__) __I915_REG_OP(read8, dev_priv, (reg__))
3540 #define I915_WRITE8(reg__, val__) __I915_REG_OP(write8, dev_priv, (reg__), (val__))
3542 #define I915_READ16(reg__) __I915_REG_OP(read16, dev_priv, (reg__))
3543 #define I915_WRITE16(reg__, val__) __I915_REG_OP(write16, dev_priv, (reg__), (val__))
3544 #define I915_READ16_NOTRACE(reg__) __I915_REG_OP(read16_notrace, dev_priv, (reg__))
3545 #define I915_WRITE16_NOTRACE(reg__, val__) __I915_REG_OP(write16_notrace, dev_priv, (reg__), (val__))
3547 #define I915_READ(reg__) __I915_REG_OP(read, dev_priv, (reg__))
3548 #define I915_WRITE(reg__, val__) __I915_REG_OP(write, dev_priv, (reg__), (val__))
3549 #define I915_READ_NOTRACE(reg__) __I915_REG_OP(read_notrace, dev_priv, (reg__))
3550 #define I915_WRITE_NOTRACE(reg__, val__) __I915_REG_OP(write_notrace, dev_priv, (reg__), (val__))
3552 /* Be very careful with read/write 64-bit values. On 32-bit machines, they
3553 * will be implemented using 2 32-bit writes in an arbitrary order with
3554 * an arbitrary delay between them. This can cause the hardware to
3555 * act upon the intermediate value, possibly leading to corruption and
3556 * machine death. For this reason we do not support I915_WRITE64, or
3557 * dev_priv->uncore.funcs.mmio_writeq.
3559 * When reading a 64-bit value as two 32-bit values, the delay may cause
3560 * the two reads to mismatch, e.g. a timestamp overflowing. Also note that
3561 * occasionally a 64-bit register does not actualy support a full readq
3562 * and must be read using two 32-bit reads.
3564 * You have been warned.
3566 #define I915_READ64(reg__) __I915_REG_OP(read64, dev_priv, (reg__))
3567 #define I915_READ64_2x32(lower_reg__, upper_reg__) \
3568 __I915_REG_OP(read64_2x32, dev_priv, (lower_reg__), (upper_reg__))
3570 #define POSTING_READ(reg__) __I915_REG_OP(posting_read, dev_priv, (reg__))
3571 #define POSTING_READ16(reg__) __I915_REG_OP(posting_read16, dev_priv, (reg__))
3573 /* These are untraced mmio-accessors that are only valid to be used inside
3574 * critical sections, such as inside IRQ handlers, where forcewake is explicitly
3577 * Think twice, and think again, before using these.
3579 * As an example, these accessors can possibly be used between:
3581 * spin_lock_irq(&dev_priv->uncore.lock);
3582 * intel_uncore_forcewake_get__locked();
3586 * intel_uncore_forcewake_put__locked();
3587 * spin_unlock_irq(&dev_priv->uncore.lock);
3590 * Note: some registers may not need forcewake held, so
3591 * intel_uncore_forcewake_{get,put} can be omitted, see
3592 * intel_uncore_forcewake_for_reg().
3594 * Certain architectures will die if the same cacheline is concurrently accessed
3595 * by different clients (e.g. on Ivybridge). Access to registers should
3596 * therefore generally be serialised, by either the dev_priv->uncore.lock or
3597 * a more localised lock guarding all access to that bank of registers.
3599 #define I915_READ_FW(reg__) __I915_REG_OP(read_fw, dev_priv, (reg__))
3600 #define I915_WRITE_FW(reg__, val__) __I915_REG_OP(write_fw, dev_priv, (reg__), (val__))
3601 #define I915_WRITE64_FW(reg__, val__) __I915_REG_OP(write64_fw, dev_priv, (reg__), (val__))
3602 #define POSTING_READ_FW(reg__) __I915_REG_OP(posting_read_fw, dev_priv, (reg__))
3604 /* "Broadcast RGB" property */
3605 #define INTEL_BROADCAST_RGB_AUTO 0
3606 #define INTEL_BROADCAST_RGB_FULL 1
3607 #define INTEL_BROADCAST_RGB_LIMITED 2
3609 static inline i915_reg_t i915_vgacntrl_reg(struct drm_i915_private *dev_priv)
3611 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
3612 return VLV_VGACNTRL;
3613 else if (INTEL_GEN(dev_priv) >= 5)
3614 return CPU_VGACNTRL;
3619 static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m)
3621 unsigned long j = msecs_to_jiffies(m);
3623 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
3626 static inline unsigned long nsecs_to_jiffies_timeout(const u64 n)
3628 /* nsecs_to_jiffies64() does not guard against overflow */
3629 if (NSEC_PER_SEC % HZ &&
3630 div_u64(n, NSEC_PER_SEC) >= MAX_JIFFY_OFFSET / HZ)
3631 return MAX_JIFFY_OFFSET;
3633 return min_t(u64, MAX_JIFFY_OFFSET, nsecs_to_jiffies64(n) + 1);
3637 * If you need to wait X milliseconds between events A and B, but event B
3638 * doesn't happen exactly after event A, you record the timestamp (jiffies) of
3639 * when event A happened, then just before event B you call this function and
3640 * pass the timestamp as the first argument, and X as the second argument.
3643 wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
3645 unsigned long target_jiffies, tmp_jiffies, remaining_jiffies;
3648 * Don't re-read the value of "jiffies" every time since it may change
3649 * behind our back and break the math.
3651 tmp_jiffies = jiffies;
3652 target_jiffies = timestamp_jiffies +
3653 msecs_to_jiffies_timeout(to_wait_ms);
3655 if (time_after(target_jiffies, tmp_jiffies)) {
3656 remaining_jiffies = target_jiffies - tmp_jiffies;
3657 while (remaining_jiffies)
3659 schedule_timeout_uninterruptible(remaining_jiffies);
3663 void i915_memcpy_init_early(struct drm_i915_private *dev_priv);
3664 bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len);
3666 /* The movntdqa instructions used for memcpy-from-wc require 16-byte alignment,
3667 * as well as SSE4.1 support. i915_memcpy_from_wc() will report if it cannot
3668 * perform the operation. To check beforehand, pass in the parameters to
3669 * to i915_can_memcpy_from_wc() - since we only care about the low 4 bits,
3670 * you only need to pass in the minor offsets, page-aligned pointers are
3673 * For just checking for SSE4.1, in the foreknowledge that the future use
3674 * will be correctly aligned, just use i915_has_memcpy_from_wc().
3676 #define i915_can_memcpy_from_wc(dst, src, len) \
3677 i915_memcpy_from_wc((void *)((unsigned long)(dst) | (unsigned long)(src) | (len)), NULL, 0)
3679 #define i915_has_memcpy_from_wc() \
3680 i915_memcpy_from_wc(NULL, NULL, 0)
3683 int remap_io_mapping(struct vm_area_struct *vma,
3684 unsigned long addr, unsigned long pfn, unsigned long size,
3685 struct io_mapping *iomap);
3687 static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
3689 if (INTEL_GEN(i915) >= 10)
3690 return CNL_HWS_CSB_WRITE_INDEX;
3692 return I915_HWS_CSB_WRITE_INDEX;
3695 static inline u32 i915_scratch_offset(const struct drm_i915_private *i915)
3697 return i915_ggtt_offset(i915->gt.scratch);