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/dma-resv.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_atomic.h>
58 #include <drm/drm_connector.h>
59 #include <drm/i915_mei_hdcp_interface.h>
61 #include "i915_fixed.h"
62 #include "i915_params.h"
64 #include "i915_utils.h"
66 #include "display/intel_bios.h"
67 #include "display/intel_display.h"
68 #include "display/intel_display_power.h"
69 #include "display/intel_dpll_mgr.h"
70 #include "display/intel_frontbuffer.h"
71 #include "display/intel_gmbus.h"
72 #include "display/intel_opregion.h"
74 #include "gem/i915_gem_context_types.h"
75 #include "gem/i915_gem_shrinker.h"
76 #include "gem/i915_gem_stolen.h"
78 #include "gt/intel_lrc.h"
79 #include "gt/intel_engine.h"
80 #include "gt/intel_gt_types.h"
81 #include "gt/intel_workarounds.h"
82 #include "gt/uc/intel_uc.h"
84 #include "intel_device_info.h"
85 #include "intel_pch.h"
86 #include "intel_runtime_pm.h"
87 #include "intel_uncore.h"
88 #include "intel_wakeref.h"
89 #include "intel_wopcm.h"
92 #include "i915_gem_fence_reg.h"
93 #include "i915_gem_gtt.h"
94 #include "i915_gpu_error.h"
95 #include "i915_request.h"
96 #include "i915_scheduler.h"
97 #include "gt/intel_timeline.h"
101 #include "intel_gvt.h"
103 /* General customization:
106 #define DRIVER_NAME "i915"
107 #define DRIVER_DESC "Intel Graphics"
108 #define DRIVER_DATE "20190822"
109 #define DRIVER_TIMESTAMP 1566477988
111 struct drm_i915_gem_object;
115 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
132 #define for_each_hpd_pin(__pin) \
133 for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
135 /* Threshold == 5 for long IRQs, 50 for short */
136 #define HPD_STORM_DEFAULT_THRESHOLD 50
138 struct i915_hotplug {
139 struct delayed_work hotplug_work;
142 unsigned long last_jiffies;
147 HPD_MARK_DISABLED = 2
149 } stats[HPD_NUM_PINS];
152 struct delayed_work reenable_work;
156 struct work_struct dig_port_work;
158 struct work_struct poll_init_work;
161 unsigned int hpd_storm_threshold;
162 /* Whether or not to count short HPD IRQs in HPD storms */
163 u8 hpd_short_storm_enabled;
166 * if we get a HPD irq from DP and a HPD irq from non-DP
167 * the non-DP HPD could block the workqueue on a mode config
168 * mutex getting, that userspace may have taken. However
169 * userspace is waiting on the DP workqueue to run which is
170 * blocked behind the non-DP one.
172 struct workqueue_struct *dp_wq;
175 #define I915_GEM_GPU_DOMAINS \
176 (I915_GEM_DOMAIN_RENDER | \
177 I915_GEM_DOMAIN_SAMPLER | \
178 I915_GEM_DOMAIN_COMMAND | \
179 I915_GEM_DOMAIN_INSTRUCTION | \
180 I915_GEM_DOMAIN_VERTEX)
182 struct drm_i915_private;
183 struct i915_mm_struct;
184 struct i915_mmu_object;
186 struct drm_i915_file_private {
187 struct drm_i915_private *dev_priv;
188 struct drm_file *file;
192 struct list_head request_list;
195 struct idr context_idr;
196 struct mutex context_idr_lock; /* guards context_idr */
199 struct mutex vm_idr_lock; /* guards vm_idr */
201 unsigned int bsd_engine;
204 * Every context ban increments per client ban score. Also
205 * hangs in short succession increments ban score. If ban threshold
206 * is reached, client is considered banned and submitting more work
207 * will fail. This is a stop gap measure to limit the badly behaving
208 * clients access to gpu. Note that unbannable contexts never increment
209 * the client ban score.
211 #define I915_CLIENT_SCORE_HANG_FAST 1
212 #define I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
213 #define I915_CLIENT_SCORE_CONTEXT_BAN 3
214 #define I915_CLIENT_SCORE_BANNED 9
215 /** ban_score: Accumulated score of all ctx bans and fast hangs. */
217 unsigned long hang_timestamp;
220 /* Interface history:
223 * 1.2: Add Power Management
224 * 1.3: Add vblank support
225 * 1.4: Fix cmdbuffer path, add heap destroy
226 * 1.5: Add vblank pipe configuration
227 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
228 * - Support vertical blank on secondary display pipe
230 #define DRIVER_MAJOR 1
231 #define DRIVER_MINOR 6
232 #define DRIVER_PATCHLEVEL 0
234 struct intel_overlay;
235 struct intel_overlay_error_state;
237 struct sdvo_device_mapping {
246 struct intel_connector;
247 struct intel_encoder;
248 struct intel_atomic_state;
249 struct intel_crtc_state;
250 struct intel_initial_plane_config;
254 struct intel_cdclk_state;
256 struct drm_i915_display_funcs {
257 void (*get_cdclk)(struct drm_i915_private *dev_priv,
258 struct intel_cdclk_state *cdclk_state);
259 void (*set_cdclk)(struct drm_i915_private *dev_priv,
260 const struct intel_cdclk_state *cdclk_state,
262 int (*get_fifo_size)(struct drm_i915_private *dev_priv,
263 enum i9xx_plane_id i9xx_plane);
264 int (*compute_pipe_wm)(struct intel_crtc_state *crtc_state);
265 int (*compute_intermediate_wm)(struct intel_crtc_state *crtc_state);
266 void (*initial_watermarks)(struct intel_atomic_state *state,
267 struct intel_crtc_state *crtc_state);
268 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
269 struct intel_crtc_state *crtc_state);
270 void (*optimize_watermarks)(struct intel_atomic_state *state,
271 struct intel_crtc_state *crtc_state);
272 int (*compute_global_watermarks)(struct intel_atomic_state *state);
273 void (*update_wm)(struct intel_crtc *crtc);
274 int (*modeset_calc_cdclk)(struct intel_atomic_state *state);
275 /* Returns the active state of the crtc, and if the crtc is active,
276 * fills out the pipe-config with the hw state. */
277 bool (*get_pipe_config)(struct intel_crtc *,
278 struct intel_crtc_state *);
279 void (*get_initial_plane_config)(struct intel_crtc *,
280 struct intel_initial_plane_config *);
281 int (*crtc_compute_clock)(struct intel_crtc *crtc,
282 struct intel_crtc_state *crtc_state);
283 void (*crtc_enable)(struct intel_crtc_state *pipe_config,
284 struct intel_atomic_state *old_state);
285 void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
286 struct intel_atomic_state *old_state);
287 void (*update_crtcs)(struct intel_atomic_state *state);
288 void (*audio_codec_enable)(struct intel_encoder *encoder,
289 const struct intel_crtc_state *crtc_state,
290 const struct drm_connector_state *conn_state);
291 void (*audio_codec_disable)(struct intel_encoder *encoder,
292 const struct intel_crtc_state *old_crtc_state,
293 const struct drm_connector_state *old_conn_state);
294 void (*fdi_link_train)(struct intel_crtc *crtc,
295 const struct intel_crtc_state *crtc_state);
296 void (*init_clock_gating)(struct drm_i915_private *dev_priv);
297 void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
298 /* clock updates for mode set */
300 /* render clock increase/decrease */
301 /* display clock increase/decrease */
302 /* pll clock increase/decrease */
304 int (*color_check)(struct intel_crtc_state *crtc_state);
306 * Program double buffered color management registers during
307 * vblank evasion. The registers should then latch during the
308 * next vblank start, alongside any other double buffered registers
309 * involved with the same commit.
311 void (*color_commit)(const struct intel_crtc_state *crtc_state);
313 * Load LUTs (and other single buffered color management
314 * registers). Will (hopefully) be called during the vblank
315 * following the latching of any double buffered registers
316 * involved with the same commit.
318 void (*load_luts)(const struct intel_crtc_state *crtc_state);
319 void (*read_luts)(struct intel_crtc_state *crtc_state);
323 struct work_struct work;
325 u32 required_version;
326 u32 max_fw_size; /* bytes */
328 u32 dmc_fw_size; /* dwords */
331 i915_reg_t mmioaddr[20];
335 intel_wakeref_t wakeref;
338 enum i915_cache_level {
340 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
341 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
342 caches, eg sampler/render caches, and the
343 large Last-Level-Cache. LLC is coherent with
344 the CPU, but L3 is only visible to the GPU. */
345 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
348 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
351 /* This is always the inner lock when overlapping with struct_mutex and
352 * it's the outer lock when overlapping with stolen_lock. */
355 unsigned int possible_framebuffer_bits;
356 unsigned int busy_bits;
357 unsigned int visible_pipes_mask;
358 struct intel_crtc *crtc;
360 struct drm_mm_node compressed_fb;
361 struct drm_mm_node *compressed_llb;
369 bool underrun_detected;
370 struct work_struct underrun_work;
373 * Due to the atomic rules we can't access some structures without the
374 * appropriate locking, so we cache information here in order to avoid
377 struct intel_fbc_state_cache {
378 struct i915_vma *vma;
382 unsigned int mode_flags;
383 u32 hsw_bdw_pixel_rate;
387 unsigned int rotation;
392 * Display surface base address adjustement for
393 * pageflips. Note that on gen4+ this only adjusts up
394 * to a tile, offsets within a tile are handled in
395 * the hw itself (with the TILEOFF register).
402 u16 pixel_blend_mode;
406 const struct drm_format_info *format;
412 * This structure contains everything that's relevant to program the
413 * hardware registers. When we want to figure out if we need to disable
414 * and re-enable FBC for a new configuration we just check if there's
415 * something different in the struct. The genx_fbc_activate functions
416 * are supposed to read from it in order to program the registers.
418 struct intel_fbc_reg_params {
419 struct i915_vma *vma;
424 enum i9xx_plane_id i9xx_plane;
425 unsigned int fence_y_offset;
429 const struct drm_format_info *format;
434 unsigned int gen9_wa_cfb_stride;
437 const char *no_fbc_reason;
441 * HIGH_RR is the highest eDP panel refresh rate read from EDID
442 * LOW_RR is the lowest eDP panel refresh rate found from EDID
443 * parsing for same resolution.
445 enum drrs_refresh_rate_type {
448 DRRS_MAX_RR, /* RR count */
451 enum drrs_support_type {
452 DRRS_NOT_SUPPORTED = 0,
453 STATIC_DRRS_SUPPORT = 1,
454 SEAMLESS_DRRS_SUPPORT = 2
460 struct delayed_work work;
462 unsigned busy_frontbuffer_bits;
463 enum drrs_refresh_rate_type refresh_rate_type;
464 enum drrs_support_type type;
470 #define I915_PSR_DEBUG_MODE_MASK 0x0f
471 #define I915_PSR_DEBUG_DEFAULT 0x00
472 #define I915_PSR_DEBUG_DISABLE 0x01
473 #define I915_PSR_DEBUG_ENABLE 0x02
474 #define I915_PSR_DEBUG_FORCE_PSR1 0x03
475 #define I915_PSR_DEBUG_IRQ 0x10
483 struct work_struct work;
484 unsigned busy_frontbuffer_bits;
485 bool sink_psr2_support;
487 bool colorimetry_support;
489 u8 sink_sync_latency;
490 ktime_t last_entry_attempt;
492 bool sink_not_reliable;
494 u16 su_x_granularity;
497 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
498 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
499 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
500 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
501 #define QUIRK_INCREASE_T12_DELAY (1<<6)
502 #define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
505 struct intel_fbc_work;
508 struct i2c_adapter adapter;
509 #define GMBUS_FORCE_BIT_RETRY (1U << 31)
513 struct i2c_algo_bit_data bit_algo;
514 struct drm_i915_private *dev_priv;
517 struct i915_suspend_saved_registers {
520 u32 saveCACHE_MODE_0;
521 u32 saveMI_ARB_STATE;
525 u64 saveFENCE[I915_MAX_NUM_FENCES];
526 u32 savePCH_PORT_HOTPLUG;
530 struct vlv_s0ix_state;
532 struct intel_rps_ei {
539 struct mutex lock; /* protects enabling and the worker */
542 * work, interrupts_enabled and pm_iir are protected by
545 struct work_struct work;
546 bool interrupts_enabled;
549 /* PM interrupt bits that should never be masked */
552 /* Frequencies are stored in potentially platform dependent multiples.
553 * In other words, *_freq needs to be multiplied by X to be interesting.
554 * Soft limits are those which are used for the dynamic reclocking done
555 * by the driver (raise frequencies under heavy loads, and lower for
556 * lighter loads). Hard limits are those imposed by the hardware.
558 * A distinction is made for overclocking, which is never enabled by
559 * default, and is considered to be above the hard limit if it's
562 u8 cur_freq; /* Current frequency (cached, may not == HW) */
563 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
564 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
565 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
566 u8 min_freq; /* AKA RPn. Minimum frequency */
567 u8 boost_freq; /* Frequency to request when wait boosting */
568 u8 idle_freq; /* Frequency to request when we are idle */
569 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
570 u8 rp1_freq; /* "less than" RP0 power/freqency */
571 u8 rp0_freq; /* Non-overclocked max frequency. */
572 u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
579 enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
580 unsigned int interactive;
582 u8 up_threshold; /* Current %busy required to uplock */
583 u8 down_threshold; /* Current %busy required to downclock */
587 atomic_t num_waiters;
590 /* manual wa residency calculations */
591 struct intel_rps_ei ei;
596 u64 prev_hw_residency[4];
597 u64 cur_residency[4];
600 struct intel_llc_pstate {
604 struct intel_gen6_power_mgmt {
605 struct intel_rps rps;
606 struct intel_rc6 rc6;
607 struct intel_llc_pstate llc_pstate;
610 /* defined intel_pm.c */
611 extern spinlock_t mchdev_lock;
613 struct intel_ilk_power_mgmt {
621 unsigned long last_time1;
622 unsigned long chipset_power;
625 unsigned long gfx_power;
632 #define MAX_L3_SLICES 2
633 struct intel_l3_parity {
634 u32 *remap_info[MAX_L3_SLICES];
635 struct work_struct error_work;
640 /** Memory allocator for GTT stolen memory */
641 struct drm_mm stolen;
642 /** Protects the usage of the GTT stolen memory allocator. This is
643 * always the inner lock when overlapping with struct_mutex. */
644 struct mutex stolen_lock;
646 /* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
650 * List of objects which are purgeable.
652 struct list_head purge_list;
655 * List of objects which have allocated pages and are shrinkable.
657 struct list_head shrink_list;
660 * List of objects which are pending destruction.
662 struct llist_head free_list;
663 struct work_struct free_work;
665 * Count of objects pending destructions. Used to skip needlessly
666 * waiting on an RCU barrier if no objects are waiting to be freed.
671 * Small stash of WC pages
673 struct pagestash wc_stash;
676 * tmpfs instance used for shmem backed objects
678 struct vfsmount *gemfs;
680 struct notifier_block oom_notifier;
681 struct notifier_block vmap_notifier;
682 struct shrinker shrinker;
685 * Workqueue to fault in userptr pages, flushed by the execbuf
686 * when required but otherwise left to userspace to try again
689 struct workqueue_struct *userptr_wq;
691 /** Bit 6 swizzling required for X tiling */
693 /** Bit 6 swizzling required for Y tiling */
696 /* shrinker accounting, also useful for userland debugging */
701 #define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
703 #define I915_RESET_TIMEOUT (10 * HZ) /* 10s */
704 #define I915_FENCE_TIMEOUT (10 * HZ) /* 10s */
706 #define I915_ENGINE_DEAD_TIMEOUT (4 * HZ) /* Seqno, head and subunits dead */
707 #define I915_SEQNO_DEAD_TIMEOUT (12 * HZ) /* Seqno dead with active head */
709 #define I915_ENGINE_WEDGED_TIMEOUT (60 * HZ) /* Reset but no recovery? */
711 struct ddi_vbt_port_info {
712 /* Non-NULL if port present. */
713 const struct child_device_config *child;
718 * This is an index in the HDMI/DVI DDI buffer translation table.
719 * The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
720 * populate this field.
722 #define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
729 u8 supports_typec_usb:1;
732 u8 alternate_aux_channel;
733 u8 alternate_ddc_pin;
737 int dp_max_link_rate; /* 0 for not limited by VBT */
740 enum psr_lines_to_wait {
741 PSR_0_LINES_TO_WAIT = 0,
747 struct intel_vbt_data {
748 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
749 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
752 unsigned int int_tv_support:1;
753 unsigned int lvds_dither:1;
754 unsigned int int_crt_support:1;
755 unsigned int lvds_use_ssc:1;
756 unsigned int int_lvds_support:1;
757 unsigned int display_clock_mode:1;
758 unsigned int fdi_rx_polarity_inverted:1;
759 unsigned int panel_type:4;
761 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
762 enum drm_panel_orientation orientation;
764 enum drrs_support_type drrs_type;
774 struct edp_power_seq pps;
780 bool require_aux_wakeup;
782 enum psr_lines_to_wait lines_to_wait;
783 int tp1_wakeup_time_us;
784 int tp2_tp3_wakeup_time_us;
785 int psr2_tp2_tp3_wakeup_time_us;
792 u8 min_brightness; /* min_brightness/255 of max */
793 u8 controller; /* brightness controller number */
794 enum intel_backlight_type type;
800 struct mipi_config *config;
801 struct mipi_pps_data *pps;
807 const u8 *sequence[MIPI_SEQ_MAX];
808 u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
809 enum drm_panel_orientation orientation;
815 struct child_device_config *child_dev;
817 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
818 struct sdvo_device_mapping sdvo_mappings[2];
821 enum intel_ddb_partitioning {
823 INTEL_DDB_PART_5_6, /* IVB+ */
826 struct intel_wm_level {
834 struct ilk_wm_values {
840 enum intel_ddb_partitioning partitioning;
844 u16 plane[I915_MAX_PLANES];
854 struct vlv_wm_ddl_values {
855 u8 plane[I915_MAX_PLANES];
858 struct vlv_wm_values {
859 struct g4x_pipe_wm pipe[3];
861 struct vlv_wm_ddl_values ddl[3];
866 struct g4x_wm_values {
867 struct g4x_pipe_wm pipe[2];
869 struct g4x_sr_wm hpll;
875 struct skl_ddb_entry {
876 u16 start, end; /* in number of blocks, 'end' is exclusive */
879 static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
881 return entry->end - entry->start;
884 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
885 const struct skl_ddb_entry *e2)
887 if (e1->start == e2->start && e1->end == e2->end)
893 struct skl_ddb_allocation {
894 u8 enabled_slices; /* GEN11 has configurable 2 slices */
897 struct skl_ddb_values {
898 unsigned dirty_pipes;
899 struct skl_ddb_allocation ddb;
902 struct skl_wm_level {
910 /* Stores plane specific WM parameters */
911 struct skl_wm_params {
912 bool x_tiled, y_tiled;
917 u32 plane_pixel_rate;
919 u32 plane_bytes_per_line;
920 uint_fixed_16_16_t plane_blocks_per_line;
921 uint_fixed_16_16_t y_tile_minimum;
926 enum intel_pipe_crc_source {
927 INTEL_PIPE_CRC_SOURCE_NONE,
928 INTEL_PIPE_CRC_SOURCE_PLANE1,
929 INTEL_PIPE_CRC_SOURCE_PLANE2,
930 INTEL_PIPE_CRC_SOURCE_PLANE3,
931 INTEL_PIPE_CRC_SOURCE_PLANE4,
932 INTEL_PIPE_CRC_SOURCE_PLANE5,
933 INTEL_PIPE_CRC_SOURCE_PLANE6,
934 INTEL_PIPE_CRC_SOURCE_PLANE7,
935 INTEL_PIPE_CRC_SOURCE_PIPE,
936 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
937 INTEL_PIPE_CRC_SOURCE_TV,
938 INTEL_PIPE_CRC_SOURCE_DP_B,
939 INTEL_PIPE_CRC_SOURCE_DP_C,
940 INTEL_PIPE_CRC_SOURCE_DP_D,
941 INTEL_PIPE_CRC_SOURCE_AUTO,
942 INTEL_PIPE_CRC_SOURCE_MAX,
945 #define INTEL_PIPE_CRC_ENTRIES_NR 128
946 struct intel_pipe_crc {
949 enum intel_pipe_crc_source source;
952 struct i915_frontbuffer_tracking {
956 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
963 struct i915_virtual_gpu {
964 struct mutex lock; /* serialises sending of g2v_notify command pkts */
969 /* used in computing the new watermarks state */
970 struct intel_wm_config {
971 unsigned int num_pipes_active;
972 bool sprites_enabled;
976 struct i915_oa_format {
986 struct i915_oa_config {
987 char uuid[UUID_STRING_LEN + 1];
990 const struct i915_oa_reg *mux_regs;
992 const struct i915_oa_reg *b_counter_regs;
993 u32 b_counter_regs_len;
994 const struct i915_oa_reg *flex_regs;
997 struct attribute_group sysfs_metric;
998 struct attribute *attrs[2];
999 struct device_attribute sysfs_metric_id;
1004 struct i915_perf_stream;
1007 * struct i915_perf_stream_ops - the OPs to support a specific stream type
1009 struct i915_perf_stream_ops {
1011 * @enable: Enables the collection of HW samples, either in response to
1012 * `I915_PERF_IOCTL_ENABLE` or implicitly called when stream is opened
1013 * without `I915_PERF_FLAG_DISABLED`.
1015 void (*enable)(struct i915_perf_stream *stream);
1018 * @disable: Disables the collection of HW samples, either in response
1019 * to `I915_PERF_IOCTL_DISABLE` or implicitly called before destroying
1022 void (*disable)(struct i915_perf_stream *stream);
1025 * @poll_wait: Call poll_wait, passing a wait queue that will be woken
1026 * once there is something ready to read() for the stream
1028 void (*poll_wait)(struct i915_perf_stream *stream,
1033 * @wait_unlocked: For handling a blocking read, wait until there is
1034 * something to ready to read() for the stream. E.g. wait on the same
1035 * wait queue that would be passed to poll_wait().
1037 int (*wait_unlocked)(struct i915_perf_stream *stream);
1040 * @read: Copy buffered metrics as records to userspace
1041 * **buf**: the userspace, destination buffer
1042 * **count**: the number of bytes to copy, requested by userspace
1043 * **offset**: zero at the start of the read, updated as the read
1044 * proceeds, it represents how many bytes have been copied so far and
1045 * the buffer offset for copying the next record.
1047 * Copy as many buffered i915 perf samples and records for this stream
1048 * to userspace as will fit in the given buffer.
1050 * Only write complete records; returning -%ENOSPC if there isn't room
1051 * for a complete record.
1053 * Return any error condition that results in a short read such as
1054 * -%ENOSPC or -%EFAULT, even though these may be squashed before
1055 * returning to userspace.
1057 int (*read)(struct i915_perf_stream *stream,
1063 * @destroy: Cleanup any stream specific resources.
1065 * The stream will always be disabled before this is called.
1067 void (*destroy)(struct i915_perf_stream *stream);
1071 * struct i915_perf_stream - state for a single open stream FD
1073 struct i915_perf_stream {
1075 * @dev_priv: i915 drm device
1077 struct drm_i915_private *dev_priv;
1080 * @link: Links the stream into ``&drm_i915_private->streams``
1082 struct list_head link;
1085 * @wakeref: As we keep the device awake while the perf stream is
1086 * active, we track our runtime pm reference for later release.
1088 intel_wakeref_t wakeref;
1091 * @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
1092 * properties given when opening a stream, representing the contents
1093 * of a single sample as read() by userspace.
1098 * @sample_size: Considering the configured contents of a sample
1099 * combined with the required header size, this is the total size
1100 * of a single sample record.
1105 * @ctx: %NULL if measuring system-wide across all contexts or a
1106 * specific context that is being monitored.
1108 struct i915_gem_context *ctx;
1111 * @enabled: Whether the stream is currently enabled, considering
1112 * whether the stream was opened in a disabled state and based
1113 * on `I915_PERF_IOCTL_ENABLE` and `I915_PERF_IOCTL_DISABLE` calls.
1118 * @ops: The callbacks providing the implementation of this specific
1119 * type of configured stream.
1121 const struct i915_perf_stream_ops *ops;
1124 * @oa_config: The OA configuration used by the stream.
1126 struct i915_oa_config *oa_config;
1129 * The OA context specific information.
1131 struct intel_context *pinned_ctx;
1132 u32 specific_ctx_id;
1133 u32 specific_ctx_id_mask;
1135 struct hrtimer poll_check_timer;
1136 wait_queue_head_t poll_wq;
1140 int period_exponent;
1143 * State of the OA buffer.
1146 struct i915_vma *vma;
1154 * Locks reads and writes to all head/tail state
1156 * Consider: the head and tail pointer state needs to be read
1157 * consistently from a hrtimer callback (atomic context) and
1158 * read() fop (user context) with tail pointer updates happening
1159 * in atomic context and head updates in user context and the
1160 * (unlikely) possibility of read() errors needing to reset all
1163 * Note: Contention/performance aren't currently a significant
1164 * concern here considering the relatively low frequency of
1165 * hrtimer callbacks (5ms period) and that reads typically only
1166 * happen in response to a hrtimer event and likely complete
1167 * before the next callback.
1169 * Note: This lock is not held *while* reading and copying data
1170 * to userspace so the value of head observed in htrimer
1171 * callbacks won't represent any partial consumption of data.
1173 spinlock_t ptr_lock;
1176 * One 'aging' tail pointer and one 'aged' tail pointer ready to
1179 * Initial values of 0xffffffff are invalid and imply that an
1180 * update is required (and should be ignored by an attempted
1188 * Index for the aged tail ready to read() data up to.
1190 unsigned int aged_tail_idx;
1193 * A monotonic timestamp for when the current aging tail pointer
1194 * was read; used to determine when it is old enough to trust.
1196 u64 aging_timestamp;
1199 * Although we can always read back the head pointer register,
1200 * we prefer to avoid trusting the HW state, just to avoid any
1201 * risk that some hardware condition could * somehow bump the
1202 * head pointer unpredictably and cause us to forward the wrong
1203 * OA buffer data to userspace.
1210 * struct i915_oa_ops - Gen specific implementation of an OA unit stream
1212 struct i915_oa_ops {
1214 * @is_valid_b_counter_reg: Validates register's address for
1215 * programming boolean counters for a particular platform.
1217 bool (*is_valid_b_counter_reg)(struct drm_i915_private *dev_priv,
1221 * @is_valid_mux_reg: Validates register's address for programming mux
1222 * for a particular platform.
1224 bool (*is_valid_mux_reg)(struct drm_i915_private *dev_priv, u32 addr);
1227 * @is_valid_flex_reg: Validates register's address for programming
1228 * flex EU filtering for a particular platform.
1230 bool (*is_valid_flex_reg)(struct drm_i915_private *dev_priv, u32 addr);
1233 * @enable_metric_set: Selects and applies any MUX configuration to set
1234 * up the Boolean and Custom (B/C) counters that are part of the
1235 * counter reports being sampled. May apply system constraints such as
1236 * disabling EU clock gating as required.
1238 int (*enable_metric_set)(struct i915_perf_stream *stream);
1241 * @disable_metric_set: Remove system constraints associated with using
1244 void (*disable_metric_set)(struct i915_perf_stream *stream);
1247 * @oa_enable: Enable periodic sampling
1249 void (*oa_enable)(struct i915_perf_stream *stream);
1252 * @oa_disable: Disable periodic sampling
1254 void (*oa_disable)(struct i915_perf_stream *stream);
1257 * @read: Copy data from the circular OA buffer into a given userspace
1260 int (*read)(struct i915_perf_stream *stream,
1266 * @oa_hw_tail_read: read the OA tail pointer register
1268 * In particular this enables us to share all the fiddly code for
1269 * handling the OA unit tail pointer race that affects multiple
1272 u32 (*oa_hw_tail_read)(struct i915_perf_stream *stream);
1275 struct intel_cdclk_state {
1276 unsigned int cdclk, vco, ref, bypass;
1280 struct drm_i915_private {
1281 struct drm_device drm;
1283 const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
1284 struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
1285 struct intel_driver_caps caps;
1288 * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
1289 * end of stolen which we can optionally use to create GEM objects
1290 * backed by stolen memory. Note that stolen_usable_size tells us
1291 * exactly how much of this we are actually allowed to use, given that
1292 * some portion of it is in fact reserved for use by hardware functions.
1294 struct resource dsm;
1296 * Reseved portion of Data Stolen Memory
1298 struct resource dsm_reserved;
1301 * Stolen memory is segmented in hardware with different portions
1302 * offlimits to certain functions.
1304 * The drm_mm is initialised to the total accessible range, as found
1305 * from the PCI config. On Broadwell+, this is further restricted to
1306 * avoid the first page! The upper end of stolen memory is reserved for
1307 * hardware functions and similarly removed from the accessible range.
1309 resource_size_t stolen_usable_size; /* Total size minus reserved ranges */
1311 struct intel_uncore uncore;
1312 struct intel_uncore_mmio_debug mmio_debug;
1314 struct i915_virtual_gpu vgpu;
1316 struct intel_gvt *gvt;
1318 struct intel_wopcm wopcm;
1320 struct intel_csr csr;
1322 struct intel_gmbus gmbus[GMBUS_NUM_PINS];
1324 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1325 * controller on different i2c buses. */
1326 struct mutex gmbus_mutex;
1329 * Base address of where the gmbus and gpio blocks are located (either
1330 * on PCH or on SoC for platforms without PCH).
1334 /* MMIO base address for MIPI regs */
1341 wait_queue_head_t gmbus_wait_queue;
1343 struct pci_dev *bridge_dev;
1345 /* Context used internally to idle the GPU and setup initial state */
1346 struct i915_gem_context *kernel_context;
1348 struct intel_engine_cs *engine[I915_NUM_ENGINES];
1349 struct rb_root uabi_engines;
1351 struct resource mch_res;
1353 /* protects the irq masks */
1354 spinlock_t irq_lock;
1356 bool display_irqs_enabled;
1358 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1359 struct pm_qos_request pm_qos;
1361 /* Sideband mailbox protection */
1362 struct mutex sb_lock;
1363 struct pm_qos_request sb_qos;
1365 /** Cached value of IMR to avoid reads in updating the bitfield */
1368 u32 de_irq_mask[I915_MAX_PIPES];
1371 u32 pipestat_irq_mask[I915_MAX_PIPES];
1373 struct i915_hotplug hotplug;
1374 struct intel_fbc fbc;
1375 struct i915_drrs drrs;
1376 struct intel_opregion opregion;
1377 struct intel_vbt_data vbt;
1379 bool preserve_bios_swizzle;
1382 struct intel_overlay *overlay;
1384 /* backlight registers and fields in struct intel_panel */
1385 struct mutex backlight_lock;
1387 /* protects panel power sequencer state */
1388 struct mutex pps_mutex;
1390 unsigned int fsb_freq, mem_freq, is_ddr3;
1391 unsigned int skl_preferred_vco_freq;
1392 unsigned int max_cdclk_freq;
1394 unsigned int max_dotclk_freq;
1395 unsigned int rawclk_freq;
1396 unsigned int hpll_freq;
1397 unsigned int fdi_pll_freq;
1398 unsigned int czclk_freq;
1402 * The current logical cdclk state.
1403 * See intel_atomic_state.cdclk.logical
1405 * For reading holding any crtc lock is sufficient,
1406 * for writing must hold all of them.
1408 struct intel_cdclk_state logical;
1410 * The current actual cdclk state.
1411 * See intel_atomic_state.cdclk.actual
1413 struct intel_cdclk_state actual;
1414 /* The current hardware cdclk state */
1415 struct intel_cdclk_state hw;
1417 int force_min_cdclk;
1421 * wq - Driver workqueue for GEM.
1423 * NOTE: Work items scheduled here are not allowed to grab any modeset
1424 * locks, for otherwise the flushing done in the pageflip code will
1425 * result in deadlocks.
1427 struct workqueue_struct *wq;
1429 /* ordered wq for modesets */
1430 struct workqueue_struct *modeset_wq;
1432 /* Display functions */
1433 struct drm_i915_display_funcs display;
1435 /* PCH chipset type */
1436 enum intel_pch pch_type;
1437 unsigned short pch_id;
1439 unsigned long quirks;
1441 struct drm_atomic_state *modeset_restore_state;
1442 struct drm_modeset_acquire_ctx reset_ctx;
1444 struct i915_ggtt ggtt; /* VM representing the global address space */
1446 struct i915_gem_mm mm;
1447 DECLARE_HASHTABLE(mm_structs, 7);
1448 struct mutex mm_lock;
1450 /* Kernel Modesetting */
1452 struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1453 struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1455 #ifdef CONFIG_DEBUG_FS
1456 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1459 /* dpll and cdclk state is protected by connection_mutex */
1460 int num_shared_dpll;
1461 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1462 const struct intel_dpll_mgr *dpll_mgr;
1465 * dpll_lock serializes intel_{prepare,enable,disable}_shared_dpll.
1466 * Must be global rather than per dpll, because on some platforms
1467 * plls share registers.
1469 struct mutex dpll_lock;
1471 unsigned int active_crtcs;
1472 /* minimum acceptable cdclk for each pipe */
1473 int min_cdclk[I915_MAX_PIPES];
1474 /* minimum acceptable voltage level for each pipe */
1475 u8 min_voltage_level[I915_MAX_PIPES];
1477 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1479 struct i915_wa_list gt_wa_list;
1481 struct i915_frontbuffer_tracking fb_tracking;
1483 struct intel_atomic_helper {
1484 struct llist_head free_list;
1485 struct work_struct free_work;
1490 bool mchbar_need_disable;
1492 struct intel_l3_parity l3_parity;
1496 * Cannot be determined by PCIID. You must always read a register.
1500 /* gen6+ GT PM state */
1501 struct intel_gen6_power_mgmt gt_pm;
1503 /* ilk-only ips/rps state. Everything in here is protected by the global
1504 * mchdev_lock in intel_pm.c */
1505 struct intel_ilk_power_mgmt ips;
1507 struct i915_power_domains power_domains;
1509 struct i915_psr psr;
1511 struct i915_gpu_error gpu_error;
1513 struct drm_i915_gem_object *vlv_pctx;
1515 /* list of fbdev register on this device */
1516 struct intel_fbdev *fbdev;
1517 struct work_struct fbdev_suspend_work;
1519 struct drm_property *broadcast_rgb_property;
1520 struct drm_property *force_audio_property;
1522 /* hda/i915 audio component */
1523 struct i915_audio_component *audio_component;
1524 bool audio_component_registered;
1526 * av_mutex - mutex for audio/video sync
1529 struct mutex av_mutex;
1530 int audio_power_refcount;
1534 struct list_head list;
1535 struct llist_head free_list;
1536 struct work_struct free_work;
1538 /* The hw wants to have a stable context identifier for the
1539 * lifetime of the context (for OA, PASID, faults, etc).
1540 * This is limited in execlists to 21 bits.
1543 #define MAX_CONTEXT_HW_ID (1<<21) /* exclusive */
1544 #define MAX_GUC_CONTEXT_HW_ID (1 << 20) /* exclusive */
1545 #define GEN11_MAX_CONTEXT_HW_ID (1<<11) /* exclusive */
1546 /* in Gen12 ID 0x7FF is reserved to indicate idle */
1547 #define GEN12_MAX_CONTEXT_HW_ID (GEN11_MAX_CONTEXT_HW_ID - 1)
1548 struct list_head hw_id_list;
1553 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
1554 u32 chv_phy_control;
1556 * Shadows for CHV DPLL_MD regs to keep the state
1557 * checker somewhat working in the presence hardware
1558 * crappiness (can't read out DPLL_MD for pipes B & C).
1560 u32 chv_dpll_md[I915_MAX_PIPES];
1564 bool power_domains_suspended;
1565 struct i915_suspend_saved_registers regfile;
1566 struct vlv_s0ix_state *vlv_s0ix_state;
1569 I915_SAGV_UNKNOWN = 0,
1572 I915_SAGV_NOT_CONTROLLED
1577 * Raw watermark latency values:
1578 * in 0.1us units for WM0,
1579 * in 0.5us units for WM1+.
1588 * Raw watermark memory latency values
1589 * for SKL for all 8 levels
1594 /* current hardware state */
1596 struct ilk_wm_values hw;
1597 struct skl_ddb_values skl_hw;
1598 struct vlv_wm_values vlv;
1599 struct g4x_wm_values g4x;
1605 * Should be held around atomic WM register writing; also
1606 * protects * intel_crtc->wm.active and
1607 * crtc_state->wm.need_postvbl_update.
1609 struct mutex wm_mutex;
1612 * Set during HW readout of watermarks/DDB. Some platforms
1613 * need to know when we're still using BIOS-provided values
1614 * (which we don't fully trust).
1616 bool distrust_bios_wm;
1625 bool symmetric_memory;
1626 enum intel_dram_type {
1635 struct intel_bw_info {
1636 unsigned int deratedbw[3]; /* for each QGV point */
1641 struct drm_private_obj bw_obj;
1643 struct intel_runtime_pm runtime_pm;
1648 struct kobject *metrics_kobj;
1649 struct ctl_table_header *sysctl_header;
1652 * Lock associated with adding/modifying/removing OA configs
1653 * in dev_priv->perf.metrics_idr.
1655 struct mutex metrics_lock;
1658 * List of dynamic configurations, you need to hold
1659 * dev_priv->perf.metrics_lock to access it.
1661 struct idr metrics_idr;
1664 * Lock associated with anything below within this structure
1665 * except exclusive_stream.
1668 struct list_head streams;
1671 * The stream currently using the OA unit. If accessed
1672 * outside a syscall associated to its file
1673 * descriptor, you need to hold
1674 * dev_priv->drm.struct_mutex.
1676 struct i915_perf_stream *exclusive_stream;
1679 * For rate limiting any notifications of spurious
1680 * invalid OA reports
1682 struct ratelimit_state spurious_report_rs;
1684 struct i915_oa_config test_config;
1686 u32 gen7_latched_oastatus1;
1687 u32 ctx_oactxctrl_offset;
1688 u32 ctx_flexeu0_offset;
1691 * The RPT_ID/reason field for Gen8+ includes a bit
1692 * to determine if the CTX ID in the report is valid
1693 * but the specific bit differs between Gen 8 and 9
1695 u32 gen8_valid_ctx_bit;
1697 struct i915_oa_ops ops;
1698 const struct i915_oa_format *oa_formats;
1701 /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
1705 struct notifier_block pm_notifier;
1708 * We leave the user IRQ off as much as possible,
1709 * but this means that requests will finish and never
1710 * be retired once the system goes idle. Set a timer to
1711 * fire periodically while the ring is running. When it
1712 * fires, go retire requests.
1714 struct delayed_work retire_work;
1717 * When we detect an idle GPU, we want to turn on
1718 * powersaving features. So once we see that there
1719 * are no more requests outstanding and no more
1720 * arrive within a small period of time, we fire
1721 * off the idle_work.
1723 struct work_struct idle_work;
1728 /* For i945gm vblank irq vs. C3 workaround */
1730 struct work_struct work;
1731 struct pm_qos_request pm_qos;
1732 u8 c3_disable_latency;
1736 /* perform PHY state sanity checks? */
1737 bool chv_phy_assert[2];
1741 /* Used to save the pipe-to-encoder mapping for audio */
1742 struct intel_encoder *av_enc_map[I915_MAX_PIPES];
1744 /* necessary resource sharing with HDMI LPE audio driver. */
1746 struct platform_device *platdev;
1750 struct i915_pmu pmu;
1752 struct i915_hdcp_comp_master *hdcp_master;
1753 bool hdcp_comp_added;
1755 /* Mutex to protect the above hdcp component related values. */
1756 struct mutex hdcp_comp_mutex;
1759 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
1760 * will be rejected. Instead look for a better place.
1764 struct dram_dimm_info {
1765 u8 size, width, ranks;
1768 struct dram_channel_info {
1769 struct dram_dimm_info dimm_l, dimm_s;
1774 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
1776 return container_of(dev, struct drm_i915_private, drm);
1779 static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
1781 return dev_get_drvdata(kdev);
1784 static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
1786 return pci_get_drvdata(pdev);
1789 /* Simple iterator over all initialised engines */
1790 #define for_each_engine(engine__, dev_priv__, id__) \
1792 (id__) < I915_NUM_ENGINES; \
1794 for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
1796 /* Iterator over subset of engines selected by mask */
1797 #define for_each_engine_masked(engine__, dev_priv__, mask__, tmp__) \
1798 for ((tmp__) = (mask__) & INTEL_INFO(dev_priv__)->engine_mask; \
1800 ((engine__) = (dev_priv__)->engine[__mask_next_bit(tmp__)]), 1 : \
1803 #define rb_to_uabi_engine(rb) \
1804 rb_entry_safe(rb, struct intel_engine_cs, uabi_node)
1806 #define for_each_uabi_engine(engine__, i915__) \
1807 for ((engine__) = rb_to_uabi_engine(rb_first(&(i915__)->uabi_engines));\
1809 (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
1811 #define I915_GTT_OFFSET_NONE ((u32)-1)
1814 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
1815 * considered to be the frontbuffer for the given plane interface-wise. This
1816 * doesn't mean that the hw necessarily already scans it out, but that any
1817 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
1819 * We have one bit per pipe and per scanout plane type.
1821 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
1822 #define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
1823 BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
1824 BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
1825 BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
1827 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
1828 BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1829 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
1830 GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
1831 INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1833 #define INTEL_INFO(dev_priv) (&(dev_priv)->__info)
1834 #define RUNTIME_INFO(dev_priv) (&(dev_priv)->__runtime)
1835 #define DRIVER_CAPS(dev_priv) (&(dev_priv)->caps)
1837 #define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
1838 #define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
1840 #define REVID_FOREVER 0xff
1841 #define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
1843 #define INTEL_GEN_MASK(s, e) ( \
1844 BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
1845 BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
1846 GENMASK((e) - 1, (s) - 1))
1848 /* Returns true if Gen is in inclusive range [Start, End] */
1849 #define IS_GEN_RANGE(dev_priv, s, e) \
1850 (!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
1852 #define IS_GEN(dev_priv, n) \
1853 (BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
1854 INTEL_INFO(dev_priv)->gen == (n))
1857 * Return true if revision is in range [since,until] inclusive.
1859 * Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
1861 #define IS_REVID(p, since, until) \
1862 (INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
1864 static __always_inline unsigned int
1865 __platform_mask_index(const struct intel_runtime_info *info,
1866 enum intel_platform p)
1868 const unsigned int pbits =
1869 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1871 /* Expand the platform_mask array if this fails. */
1872 BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
1873 pbits * ARRAY_SIZE(info->platform_mask));
1878 static __always_inline unsigned int
1879 __platform_mask_bit(const struct intel_runtime_info *info,
1880 enum intel_platform p)
1882 const unsigned int pbits =
1883 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1885 return p % pbits + INTEL_SUBPLATFORM_BITS;
1889 intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
1891 const unsigned int pi = __platform_mask_index(info, p);
1893 return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
1896 static __always_inline bool
1897 IS_PLATFORM(const struct drm_i915_private *i915, enum intel_platform p)
1899 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1900 const unsigned int pi = __platform_mask_index(info, p);
1901 const unsigned int pb = __platform_mask_bit(info, p);
1903 BUILD_BUG_ON(!__builtin_constant_p(p));
1905 return info->platform_mask[pi] & BIT(pb);
1908 static __always_inline bool
1909 IS_SUBPLATFORM(const struct drm_i915_private *i915,
1910 enum intel_platform p, unsigned int s)
1912 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1913 const unsigned int pi = __platform_mask_index(info, p);
1914 const unsigned int pb = __platform_mask_bit(info, p);
1915 const unsigned int msb = BITS_PER_TYPE(info->platform_mask[0]) - 1;
1916 const u32 mask = info->platform_mask[pi];
1918 BUILD_BUG_ON(!__builtin_constant_p(p));
1919 BUILD_BUG_ON(!__builtin_constant_p(s));
1920 BUILD_BUG_ON((s) >= INTEL_SUBPLATFORM_BITS);
1922 /* Shift and test on the MSB position so sign flag can be used. */
1923 return ((mask << (msb - pb)) & (mask << (msb - s))) & BIT(msb);
1926 #define IS_MOBILE(dev_priv) (INTEL_INFO(dev_priv)->is_mobile)
1928 #define IS_I830(dev_priv) IS_PLATFORM(dev_priv, INTEL_I830)
1929 #define IS_I845G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I845G)
1930 #define IS_I85X(dev_priv) IS_PLATFORM(dev_priv, INTEL_I85X)
1931 #define IS_I865G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I865G)
1932 #define IS_I915G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915G)
1933 #define IS_I915GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915GM)
1934 #define IS_I945G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945G)
1935 #define IS_I945GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945GM)
1936 #define IS_I965G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965G)
1937 #define IS_I965GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965GM)
1938 #define IS_G45(dev_priv) IS_PLATFORM(dev_priv, INTEL_G45)
1939 #define IS_GM45(dev_priv) IS_PLATFORM(dev_priv, INTEL_GM45)
1940 #define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
1941 #define IS_PINEVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
1942 #define IS_G33(dev_priv) IS_PLATFORM(dev_priv, INTEL_G33)
1943 #define IS_IRONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IRONLAKE)
1944 #define IS_IRONLAKE_M(dev_priv) \
1945 (IS_PLATFORM(dev_priv, INTEL_IRONLAKE) && IS_MOBILE(dev_priv))
1946 #define IS_IVYBRIDGE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
1947 #define IS_IVB_GT1(dev_priv) (IS_IVYBRIDGE(dev_priv) && \
1948 INTEL_INFO(dev_priv)->gt == 1)
1949 #define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
1950 #define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
1951 #define IS_HASWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_HASWELL)
1952 #define IS_BROADWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROADWELL)
1953 #define IS_SKYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
1954 #define IS_BROXTON(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROXTON)
1955 #define IS_KABYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
1956 #define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
1957 #define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
1958 #define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
1959 #define IS_ICELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ICELAKE)
1960 #define IS_ELKHARTLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE)
1961 #define IS_TIGERLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
1962 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
1963 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
1964 #define IS_BDW_ULT(dev_priv) \
1965 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULT)
1966 #define IS_BDW_ULX(dev_priv) \
1967 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULX)
1968 #define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
1969 INTEL_INFO(dev_priv)->gt == 3)
1970 #define IS_HSW_ULT(dev_priv) \
1971 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULT)
1972 #define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
1973 INTEL_INFO(dev_priv)->gt == 3)
1974 #define IS_HSW_GT1(dev_priv) (IS_HASWELL(dev_priv) && \
1975 INTEL_INFO(dev_priv)->gt == 1)
1976 /* ULX machines are also considered ULT. */
1977 #define IS_HSW_ULX(dev_priv) \
1978 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULX)
1979 #define IS_SKL_ULT(dev_priv) \
1980 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULT)
1981 #define IS_SKL_ULX(dev_priv) \
1982 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULX)
1983 #define IS_KBL_ULT(dev_priv) \
1984 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULT)
1985 #define IS_KBL_ULX(dev_priv) \
1986 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULX)
1987 #define IS_SKL_GT2(dev_priv) (IS_SKYLAKE(dev_priv) && \
1988 INTEL_INFO(dev_priv)->gt == 2)
1989 #define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
1990 INTEL_INFO(dev_priv)->gt == 3)
1991 #define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
1992 INTEL_INFO(dev_priv)->gt == 4)
1993 #define IS_KBL_GT2(dev_priv) (IS_KABYLAKE(dev_priv) && \
1994 INTEL_INFO(dev_priv)->gt == 2)
1995 #define IS_KBL_GT3(dev_priv) (IS_KABYLAKE(dev_priv) && \
1996 INTEL_INFO(dev_priv)->gt == 3)
1997 #define IS_CFL_ULT(dev_priv) \
1998 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULT)
1999 #define IS_CFL_ULX(dev_priv) \
2000 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULX)
2001 #define IS_CFL_GT2(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2002 INTEL_INFO(dev_priv)->gt == 2)
2003 #define IS_CFL_GT3(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2004 INTEL_INFO(dev_priv)->gt == 3)
2005 #define IS_CNL_WITH_PORT_F(dev_priv) \
2006 IS_SUBPLATFORM(dev_priv, INTEL_CANNONLAKE, INTEL_SUBPLATFORM_PORTF)
2007 #define IS_ICL_WITH_PORT_F(dev_priv) \
2008 IS_SUBPLATFORM(dev_priv, INTEL_ICELAKE, INTEL_SUBPLATFORM_PORTF)
2010 #define SKL_REVID_A0 0x0
2011 #define SKL_REVID_B0 0x1
2012 #define SKL_REVID_C0 0x2
2013 #define SKL_REVID_D0 0x3
2014 #define SKL_REVID_E0 0x4
2015 #define SKL_REVID_F0 0x5
2016 #define SKL_REVID_G0 0x6
2017 #define SKL_REVID_H0 0x7
2019 #define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
2021 #define BXT_REVID_A0 0x0
2022 #define BXT_REVID_A1 0x1
2023 #define BXT_REVID_B0 0x3
2024 #define BXT_REVID_B_LAST 0x8
2025 #define BXT_REVID_C0 0x9
2027 #define IS_BXT_REVID(dev_priv, since, until) \
2028 (IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
2030 #define KBL_REVID_A0 0x0
2031 #define KBL_REVID_B0 0x1
2032 #define KBL_REVID_C0 0x2
2033 #define KBL_REVID_D0 0x3
2034 #define KBL_REVID_E0 0x4
2036 #define IS_KBL_REVID(dev_priv, since, until) \
2037 (IS_KABYLAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2039 #define GLK_REVID_A0 0x0
2040 #define GLK_REVID_A1 0x1
2042 #define IS_GLK_REVID(dev_priv, since, until) \
2043 (IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2045 #define CNL_REVID_A0 0x0
2046 #define CNL_REVID_B0 0x1
2047 #define CNL_REVID_C0 0x2
2049 #define IS_CNL_REVID(p, since, until) \
2050 (IS_CANNONLAKE(p) && IS_REVID(p, since, until))
2052 #define ICL_REVID_A0 0x0
2053 #define ICL_REVID_A2 0x1
2054 #define ICL_REVID_B0 0x3
2055 #define ICL_REVID_B2 0x4
2056 #define ICL_REVID_C0 0x5
2058 #define IS_ICL_REVID(p, since, until) \
2059 (IS_ICELAKE(p) && IS_REVID(p, since, until))
2061 #define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
2062 #define IS_GEN9_LP(dev_priv) (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
2063 #define IS_GEN9_BC(dev_priv) (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
2065 #define HAS_ENGINE(dev_priv, id) (INTEL_INFO(dev_priv)->engine_mask & BIT(id))
2067 #define ENGINE_INSTANCES_MASK(dev_priv, first, count) ({ \
2068 unsigned int first__ = (first); \
2069 unsigned int count__ = (count); \
2070 (INTEL_INFO(dev_priv)->engine_mask & \
2071 GENMASK(first__ + count__ - 1, first__)) >> first__; \
2073 #define VDBOX_MASK(dev_priv) \
2074 ENGINE_INSTANCES_MASK(dev_priv, VCS0, I915_MAX_VCS)
2075 #define VEBOX_MASK(dev_priv) \
2076 ENGINE_INSTANCES_MASK(dev_priv, VECS0, I915_MAX_VECS)
2078 #define HAS_LLC(dev_priv) (INTEL_INFO(dev_priv)->has_llc)
2079 #define HAS_SNOOP(dev_priv) (INTEL_INFO(dev_priv)->has_snoop)
2080 #define HAS_EDRAM(dev_priv) ((dev_priv)->edram_size_mb)
2081 #define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
2082 IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
2084 #define HWS_NEEDS_PHYSICAL(dev_priv) (INTEL_INFO(dev_priv)->hws_needs_physical)
2086 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
2087 (INTEL_INFO(dev_priv)->has_logical_ring_contexts)
2088 #define HAS_LOGICAL_RING_ELSQ(dev_priv) \
2089 (INTEL_INFO(dev_priv)->has_logical_ring_elsq)
2090 #define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
2091 (INTEL_INFO(dev_priv)->has_logical_ring_preemption)
2093 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
2095 #define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_type)
2096 #define HAS_PPGTT(dev_priv) \
2097 (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
2098 #define HAS_FULL_PPGTT(dev_priv) \
2099 (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
2101 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
2102 GEM_BUG_ON((sizes) == 0); \
2103 ((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
2106 #define HAS_OVERLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_overlay)
2107 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
2108 (INTEL_INFO(dev_priv)->display.overlay_needs_physical)
2110 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
2111 #define HAS_BROKEN_CS_TLB(dev_priv) (IS_I830(dev_priv) || IS_I845G(dev_priv))
2113 /* WaRsDisableCoarsePowerGating:skl,cnl */
2114 #define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
2115 (IS_CANNONLAKE(dev_priv) || \
2116 IS_SKL_GT3(dev_priv) || IS_SKL_GT4(dev_priv))
2118 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
2119 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
2120 IS_GEMINILAKE(dev_priv) || \
2121 IS_KABYLAKE(dev_priv))
2123 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
2124 * rows, which changed the alignment requirements and fence programming.
2126 #define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
2127 !(IS_I915G(dev_priv) || \
2128 IS_I915GM(dev_priv)))
2129 #define SUPPORTS_TV(dev_priv) (INTEL_INFO(dev_priv)->display.supports_tv)
2130 #define I915_HAS_HOTPLUG(dev_priv) (INTEL_INFO(dev_priv)->display.has_hotplug)
2132 #define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
2133 #define HAS_FBC(dev_priv) (INTEL_INFO(dev_priv)->display.has_fbc)
2134 #define HAS_CUR_FBC(dev_priv) (!HAS_GMCH(dev_priv) && INTEL_GEN(dev_priv) >= 7)
2136 #define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
2138 #define HAS_DP_MST(dev_priv) (INTEL_INFO(dev_priv)->display.has_dp_mst)
2140 #define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
2141 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
2142 #define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
2143 #define HAS_TRANSCODER_EDP(dev_priv) (INTEL_INFO(dev_priv)->trans_offsets[TRANSCODER_EDP] != 0)
2145 #define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)
2146 #define HAS_RC6p(dev_priv) (INTEL_INFO(dev_priv)->has_rc6p)
2147 #define HAS_RC6pp(dev_priv) (false) /* HW was never validated */
2149 #define HAS_RPS(dev_priv) (INTEL_INFO(dev_priv)->has_rps)
2151 #define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
2153 #define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
2154 #define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
2156 #define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
2158 #define HAS_GT_UC(dev_priv) (INTEL_INFO(dev_priv)->has_gt_uc)
2160 /* Having GuC is not the same as using GuC */
2161 #define USES_GUC(dev_priv) intel_uc_uses_guc(&(dev_priv)->gt.uc)
2162 #define USES_GUC_SUBMISSION(dev_priv) intel_uc_uses_guc_submission(&(dev_priv)->gt.uc)
2164 #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
2166 #define HAS_GLOBAL_MOCS_REGISTERS(dev_priv) (INTEL_INFO(dev_priv)->has_global_mocs)
2169 #define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
2171 #define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
2173 /* DPF == dynamic parity feature */
2174 #define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
2175 #define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
2176 2 : HAS_L3_DPF(dev_priv))
2178 #define GT_FREQUENCY_MULTIPLIER 50
2179 #define GEN9_FREQ_SCALER 3
2181 #define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->num_pipes > 0)
2183 static inline bool intel_vtd_active(void)
2185 #ifdef CONFIG_INTEL_IOMMU
2186 if (intel_iommu_gfx_mapped)
2192 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
2194 return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
2198 intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
2200 return IS_BROXTON(dev_priv) && intel_vtd_active();
2204 #ifdef CONFIG_COMPAT
2205 long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
2207 #define i915_compat_ioctl NULL
2209 extern const struct dev_pm_ops i915_pm_ops;
2211 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
2212 void i915_driver_remove(struct drm_i915_private *i915);
2214 void intel_engine_init_hangcheck(struct intel_engine_cs *engine);
2215 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
2217 static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
2219 return dev_priv->gvt;
2222 static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
2224 return dev_priv->vgpu.active;
2227 int i915_getparam_ioctl(struct drm_device *dev, void *data,
2228 struct drm_file *file_priv);
2231 int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
2232 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
2233 void i915_gem_sanitize(struct drm_i915_private *i915);
2234 int i915_gem_init_early(struct drm_i915_private *dev_priv);
2235 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
2236 int i915_gem_freeze(struct drm_i915_private *dev_priv);
2237 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
2239 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
2242 * A single pass should suffice to release all the freed objects (along
2243 * most call paths) , but be a little more paranoid in that freeing
2244 * the objects does take a little amount of time, during which the rcu
2245 * callbacks could have added new objects into the freed list, and
2246 * armed the work again.
2248 while (atomic_read(&i915->mm.free_count)) {
2249 flush_work(&i915->mm.free_work);
2254 static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
2257 * Similar to objects above (see i915_gem_drain_freed-objects), in
2258 * general we have workers that are armed by RCU and then rearm
2259 * themselves in their callbacks. To be paranoid, we need to
2260 * drain the workqueue a second time after waiting for the RCU
2261 * grace period so that we catch work queued via RCU from the first
2262 * pass. As neither drain_workqueue() nor flush_workqueue() report
2263 * a result, we make an assumption that we only don't require more
2264 * than 3 passes to catch all _recursive_ RCU delayed work.
2269 flush_workqueue(i915->wq);
2271 i915_gem_drain_freed_objects(i915);
2273 drain_workqueue(i915->wq);
2276 struct i915_vma * __must_check
2277 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
2278 const struct i915_ggtt_view *view,
2283 int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
2284 unsigned long flags);
2285 #define I915_GEM_OBJECT_UNBIND_ACTIVE BIT(0)
2287 void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
2289 static inline int __must_check
2290 i915_mutex_lock_interruptible(struct drm_device *dev)
2292 return mutex_lock_interruptible(&dev->struct_mutex);
2295 int i915_gem_dumb_create(struct drm_file *file_priv,
2296 struct drm_device *dev,
2297 struct drm_mode_create_dumb *args);
2298 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
2299 u32 handle, u64 *offset);
2300 int i915_gem_mmap_gtt_version(void);
2302 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
2304 static inline u32 i915_reset_count(struct i915_gpu_error *error)
2306 return atomic_read(&error->reset_count);
2309 static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
2310 struct intel_engine_cs *engine)
2312 return atomic_read(&error->reset_engine_count[engine->uabi_class]);
2315 void i915_gem_init_mmio(struct drm_i915_private *i915);
2316 int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
2317 int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv);
2318 void i915_gem_driver_register(struct drm_i915_private *i915);
2319 void i915_gem_driver_unregister(struct drm_i915_private *i915);
2320 void i915_gem_driver_remove(struct drm_i915_private *dev_priv);
2321 void i915_gem_driver_release(struct drm_i915_private *dev_priv);
2322 int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
2323 unsigned int flags, long timeout);
2324 void i915_gem_suspend(struct drm_i915_private *dev_priv);
2325 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
2326 void i915_gem_resume(struct drm_i915_private *dev_priv);
2327 vm_fault_t i915_gem_fault(struct vm_fault *vmf);
2329 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
2330 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
2332 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
2333 enum i915_cache_level cache_level);
2335 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
2336 struct dma_buf *dma_buf);
2338 struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags);
2340 static inline struct i915_gem_context *
2341 __i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
2343 return idr_find(&file_priv->context_idr, id);
2346 static inline struct i915_gem_context *
2347 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
2349 struct i915_gem_context *ctx;
2352 ctx = __i915_gem_context_lookup_rcu(file_priv, id);
2353 if (ctx && !kref_get_unless_zero(&ctx->ref))
2360 /* i915_gem_evict.c */
2361 int __must_check i915_gem_evict_something(struct i915_address_space *vm,
2362 u64 min_size, u64 alignment,
2363 unsigned cache_level,
2366 int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
2367 struct drm_mm_node *node,
2368 unsigned int flags);
2369 int i915_gem_evict_vm(struct i915_address_space *vm);
2371 /* i915_gem_internal.c */
2372 struct drm_i915_gem_object *
2373 i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
2376 /* i915_gem_tiling.c */
2377 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
2379 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
2381 return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
2382 i915_gem_object_is_tiled(obj);
2385 u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
2386 unsigned int tiling, unsigned int stride);
2387 u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
2388 unsigned int tiling, unsigned int stride);
2390 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
2392 /* i915_cmd_parser.c */
2393 int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
2394 void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
2395 void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
2396 int intel_engine_cmd_parser(struct intel_engine_cs *engine,
2397 struct drm_i915_gem_object *batch_obj,
2398 struct drm_i915_gem_object *shadow_batch_obj,
2399 u32 batch_start_offset,
2403 /* intel_device_info.c */
2404 static inline struct intel_device_info *
2405 mkwrite_device_info(struct drm_i915_private *dev_priv)
2407 return (struct intel_device_info *)INTEL_INFO(dev_priv);
2410 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
2411 struct drm_file *file);
2413 #define __I915_REG_OP(op__, dev_priv__, ...) \
2414 intel_uncore_##op__(&(dev_priv__)->uncore, __VA_ARGS__)
2416 #define I915_READ(reg__) __I915_REG_OP(read, dev_priv, (reg__))
2417 #define I915_WRITE(reg__, val__) __I915_REG_OP(write, dev_priv, (reg__), (val__))
2419 #define POSTING_READ(reg__) __I915_REG_OP(posting_read, dev_priv, (reg__))
2421 /* These are untraced mmio-accessors that are only valid to be used inside
2422 * critical sections, such as inside IRQ handlers, where forcewake is explicitly
2425 * Think twice, and think again, before using these.
2427 * As an example, these accessors can possibly be used between:
2429 * spin_lock_irq(&dev_priv->uncore.lock);
2430 * intel_uncore_forcewake_get__locked();
2434 * intel_uncore_forcewake_put__locked();
2435 * spin_unlock_irq(&dev_priv->uncore.lock);
2438 * Note: some registers may not need forcewake held, so
2439 * intel_uncore_forcewake_{get,put} can be omitted, see
2440 * intel_uncore_forcewake_for_reg().
2442 * Certain architectures will die if the same cacheline is concurrently accessed
2443 * by different clients (e.g. on Ivybridge). Access to registers should
2444 * therefore generally be serialised, by either the dev_priv->uncore.lock or
2445 * a more localised lock guarding all access to that bank of registers.
2447 #define I915_READ_FW(reg__) __I915_REG_OP(read_fw, dev_priv, (reg__))
2448 #define I915_WRITE_FW(reg__, val__) __I915_REG_OP(write_fw, dev_priv, (reg__), (val__))
2450 /* register wait wrappers for display regs */
2451 #define intel_de_wait_for_register(dev_priv_, reg_, mask_, value_, timeout_) \
2452 intel_wait_for_register(&(dev_priv_)->uncore, \
2453 (reg_), (mask_), (value_), (timeout_))
2455 #define intel_de_wait_for_set(dev_priv_, reg_, mask_, timeout_) ({ \
2456 u32 mask__ = (mask_); \
2457 intel_de_wait_for_register((dev_priv_), (reg_), \
2458 mask__, mask__, (timeout_)); \
2461 #define intel_de_wait_for_clear(dev_priv_, reg_, mask_, timeout_) \
2462 intel_de_wait_for_register((dev_priv_), (reg_), (mask_), 0, (timeout_))
2465 int remap_io_mapping(struct vm_area_struct *vma,
2466 unsigned long addr, unsigned long pfn, unsigned long size,
2467 struct io_mapping *iomap);
2469 static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
2471 if (INTEL_GEN(i915) >= 10)
2472 return CNL_HWS_CSB_WRITE_INDEX;
2474 return I915_HWS_CSB_WRITE_INDEX;
2477 static inline enum i915_map_type
2478 i915_coherent_map_type(struct drm_i915_private *i915)
2480 return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;