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_dsb.h"
71 #include "display/intel_frontbuffer.h"
72 #include "display/intel_gmbus.h"
73 #include "display/intel_opregion.h"
75 #include "gem/i915_gem_context_types.h"
76 #include "gem/i915_gem_shrinker.h"
77 #include "gem/i915_gem_stolen.h"
79 #include "gt/intel_lrc.h"
80 #include "gt/intel_engine.h"
81 #include "gt/intel_gt_types.h"
82 #include "gt/intel_workarounds.h"
83 #include "gt/uc/intel_uc.h"
85 #include "intel_device_info.h"
86 #include "intel_pch.h"
87 #include "intel_runtime_pm.h"
88 #include "intel_memory_region.h"
89 #include "intel_uncore.h"
90 #include "intel_wakeref.h"
91 #include "intel_wopcm.h"
94 #include "i915_gem_fence_reg.h"
95 #include "i915_gem_gtt.h"
96 #include "i915_gpu_error.h"
97 #include "i915_perf_types.h"
98 #include "i915_request.h"
99 #include "i915_scheduler.h"
100 #include "gt/intel_timeline.h"
101 #include "i915_vma.h"
102 #include "i915_irq.h"
104 #include "intel_gvt.h"
106 /* General customization:
109 #define DRIVER_NAME "i915"
110 #define DRIVER_DESC "Intel Graphics"
111 #define DRIVER_DATE "20191021"
112 #define DRIVER_TIMESTAMP 1571651766
114 struct drm_i915_gem_object;
118 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
135 #define for_each_hpd_pin(__pin) \
136 for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
138 /* Threshold == 5 for long IRQs, 50 for short */
139 #define HPD_STORM_DEFAULT_THRESHOLD 50
141 struct i915_hotplug {
142 struct delayed_work hotplug_work;
145 unsigned long last_jiffies;
150 HPD_MARK_DISABLED = 2
152 } stats[HPD_NUM_PINS];
155 struct delayed_work reenable_work;
159 struct work_struct dig_port_work;
161 struct work_struct poll_init_work;
164 unsigned int hpd_storm_threshold;
165 /* Whether or not to count short HPD IRQs in HPD storms */
166 u8 hpd_short_storm_enabled;
169 * if we get a HPD irq from DP and a HPD irq from non-DP
170 * the non-DP HPD could block the workqueue on a mode config
171 * mutex getting, that userspace may have taken. However
172 * userspace is waiting on the DP workqueue to run which is
173 * blocked behind the non-DP one.
175 struct workqueue_struct *dp_wq;
178 #define I915_GEM_GPU_DOMAINS \
179 (I915_GEM_DOMAIN_RENDER | \
180 I915_GEM_DOMAIN_SAMPLER | \
181 I915_GEM_DOMAIN_COMMAND | \
182 I915_GEM_DOMAIN_INSTRUCTION | \
183 I915_GEM_DOMAIN_VERTEX)
185 struct drm_i915_private;
186 struct i915_mm_struct;
187 struct i915_mmu_object;
189 struct drm_i915_file_private {
190 struct drm_i915_private *dev_priv;
193 struct drm_file *file;
199 struct list_head request_list;
202 struct idr context_idr;
203 struct mutex context_idr_lock; /* guards context_idr */
206 struct mutex vm_idr_lock; /* guards vm_idr */
208 unsigned int bsd_engine;
211 * Every context ban increments per client ban score. Also
212 * hangs in short succession increments ban score. If ban threshold
213 * is reached, client is considered banned and submitting more work
214 * will fail. This is a stop gap measure to limit the badly behaving
215 * clients access to gpu. Note that unbannable contexts never increment
216 * the client ban score.
218 #define I915_CLIENT_SCORE_HANG_FAST 1
219 #define I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
220 #define I915_CLIENT_SCORE_CONTEXT_BAN 3
221 #define I915_CLIENT_SCORE_BANNED 9
222 /** ban_score: Accumulated score of all ctx bans and fast hangs. */
224 unsigned long hang_timestamp;
227 /* Interface history:
230 * 1.2: Add Power Management
231 * 1.3: Add vblank support
232 * 1.4: Fix cmdbuffer path, add heap destroy
233 * 1.5: Add vblank pipe configuration
234 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
235 * - Support vertical blank on secondary display pipe
237 #define DRIVER_MAJOR 1
238 #define DRIVER_MINOR 6
239 #define DRIVER_PATCHLEVEL 0
241 struct intel_overlay;
242 struct intel_overlay_error_state;
244 struct sdvo_device_mapping {
253 struct intel_connector;
254 struct intel_encoder;
255 struct intel_atomic_state;
256 struct intel_crtc_state;
257 struct intel_initial_plane_config;
261 struct intel_cdclk_state;
263 struct drm_i915_display_funcs {
264 void (*get_cdclk)(struct drm_i915_private *dev_priv,
265 struct intel_cdclk_state *cdclk_state);
266 void (*set_cdclk)(struct drm_i915_private *dev_priv,
267 const struct intel_cdclk_state *cdclk_state,
269 int (*get_fifo_size)(struct drm_i915_private *dev_priv,
270 enum i9xx_plane_id i9xx_plane);
271 int (*compute_pipe_wm)(struct intel_crtc_state *crtc_state);
272 int (*compute_intermediate_wm)(struct intel_crtc_state *crtc_state);
273 void (*initial_watermarks)(struct intel_atomic_state *state,
274 struct intel_crtc_state *crtc_state);
275 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
276 struct intel_crtc_state *crtc_state);
277 void (*optimize_watermarks)(struct intel_atomic_state *state,
278 struct intel_crtc_state *crtc_state);
279 int (*compute_global_watermarks)(struct intel_atomic_state *state);
280 void (*update_wm)(struct intel_crtc *crtc);
281 int (*modeset_calc_cdclk)(struct intel_atomic_state *state);
282 u8 (*calc_voltage_level)(int cdclk);
283 /* Returns the active state of the crtc, and if the crtc is active,
284 * fills out the pipe-config with the hw state. */
285 bool (*get_pipe_config)(struct intel_crtc *,
286 struct intel_crtc_state *);
287 void (*get_initial_plane_config)(struct intel_crtc *,
288 struct intel_initial_plane_config *);
289 int (*crtc_compute_clock)(struct intel_crtc *crtc,
290 struct intel_crtc_state *crtc_state);
291 void (*crtc_enable)(struct intel_crtc_state *pipe_config,
292 struct intel_atomic_state *old_state);
293 void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
294 struct intel_atomic_state *old_state);
295 void (*commit_modeset_enables)(struct intel_atomic_state *state);
296 void (*commit_modeset_disables)(struct intel_atomic_state *state);
297 void (*audio_codec_enable)(struct intel_encoder *encoder,
298 const struct intel_crtc_state *crtc_state,
299 const struct drm_connector_state *conn_state);
300 void (*audio_codec_disable)(struct intel_encoder *encoder,
301 const struct intel_crtc_state *old_crtc_state,
302 const struct drm_connector_state *old_conn_state);
303 void (*fdi_link_train)(struct intel_crtc *crtc,
304 const struct intel_crtc_state *crtc_state);
305 void (*init_clock_gating)(struct drm_i915_private *dev_priv);
306 void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
307 /* clock updates for mode set */
309 /* render clock increase/decrease */
310 /* display clock increase/decrease */
311 /* pll clock increase/decrease */
313 int (*color_check)(struct intel_crtc_state *crtc_state);
315 * Program double buffered color management registers during
316 * vblank evasion. The registers should then latch during the
317 * next vblank start, alongside any other double buffered registers
318 * involved with the same commit.
320 void (*color_commit)(const struct intel_crtc_state *crtc_state);
322 * Load LUTs (and other single buffered color management
323 * registers). Will (hopefully) be called during the vblank
324 * following the latching of any double buffered registers
325 * involved with the same commit.
327 void (*load_luts)(const struct intel_crtc_state *crtc_state);
328 void (*read_luts)(struct intel_crtc_state *crtc_state);
332 struct work_struct work;
334 u32 required_version;
335 u32 max_fw_size; /* bytes */
337 u32 dmc_fw_size; /* dwords */
340 i915_reg_t mmioaddr[20];
345 intel_wakeref_t wakeref;
348 enum i915_cache_level {
350 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
351 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
352 caches, eg sampler/render caches, and the
353 large Last-Level-Cache. LLC is coherent with
354 the CPU, but L3 is only visible to the GPU. */
355 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
358 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
361 /* This is always the inner lock when overlapping with struct_mutex and
362 * it's the outer lock when overlapping with stolen_lock. */
365 unsigned int possible_framebuffer_bits;
366 unsigned int busy_bits;
367 unsigned int visible_pipes_mask;
368 struct intel_crtc *crtc;
370 struct drm_mm_node compressed_fb;
371 struct drm_mm_node *compressed_llb;
379 bool underrun_detected;
380 struct work_struct underrun_work;
383 * Due to the atomic rules we can't access some structures without the
384 * appropriate locking, so we cache information here in order to avoid
387 struct intel_fbc_state_cache {
388 struct i915_vma *vma;
392 unsigned int mode_flags;
393 u32 hsw_bdw_pixel_rate;
397 unsigned int rotation;
402 * Display surface base address adjustement for
403 * pageflips. Note that on gen4+ this only adjusts up
404 * to a tile, offsets within a tile are handled in
405 * the hw itself (with the TILEOFF register).
412 u16 pixel_blend_mode;
416 const struct drm_format_info *format;
422 * This structure contains everything that's relevant to program the
423 * hardware registers. When we want to figure out if we need to disable
424 * and re-enable FBC for a new configuration we just check if there's
425 * something different in the struct. The genx_fbc_activate functions
426 * are supposed to read from it in order to program the registers.
428 struct intel_fbc_reg_params {
429 struct i915_vma *vma;
434 enum i9xx_plane_id i9xx_plane;
435 unsigned int fence_y_offset;
439 const struct drm_format_info *format;
444 unsigned int gen9_wa_cfb_stride;
447 const char *no_fbc_reason;
451 * HIGH_RR is the highest eDP panel refresh rate read from EDID
452 * LOW_RR is the lowest eDP panel refresh rate found from EDID
453 * parsing for same resolution.
455 enum drrs_refresh_rate_type {
458 DRRS_MAX_RR, /* RR count */
461 enum drrs_support_type {
462 DRRS_NOT_SUPPORTED = 0,
463 STATIC_DRRS_SUPPORT = 1,
464 SEAMLESS_DRRS_SUPPORT = 2
470 struct delayed_work work;
472 unsigned busy_frontbuffer_bits;
473 enum drrs_refresh_rate_type refresh_rate_type;
474 enum drrs_support_type type;
480 #define I915_PSR_DEBUG_MODE_MASK 0x0f
481 #define I915_PSR_DEBUG_DEFAULT 0x00
482 #define I915_PSR_DEBUG_DISABLE 0x01
483 #define I915_PSR_DEBUG_ENABLE 0x02
484 #define I915_PSR_DEBUG_FORCE_PSR1 0x03
485 #define I915_PSR_DEBUG_IRQ 0x10
492 enum transcoder transcoder;
494 struct work_struct work;
495 unsigned busy_frontbuffer_bits;
496 bool sink_psr2_support;
498 bool colorimetry_support;
500 u8 sink_sync_latency;
501 ktime_t last_entry_attempt;
503 bool sink_not_reliable;
505 u16 su_x_granularity;
507 u32 dc3co_exit_delay;
508 struct delayed_work idle_work;
511 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
512 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
513 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
514 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
515 #define QUIRK_INCREASE_T12_DELAY (1<<6)
516 #define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
519 struct intel_fbc_work;
522 struct i2c_adapter adapter;
523 #define GMBUS_FORCE_BIT_RETRY (1U << 31)
527 struct i2c_algo_bit_data bit_algo;
528 struct drm_i915_private *dev_priv;
531 struct i915_suspend_saved_registers {
534 u32 saveCACHE_MODE_0;
535 u32 saveMI_ARB_STATE;
539 u64 saveFENCE[I915_MAX_NUM_FENCES];
540 u32 savePCH_PORT_HOTPLUG;
544 struct vlv_s0ix_state;
546 struct intel_rps_ei {
553 struct mutex lock; /* protects enabling and the worker */
556 * work, interrupts_enabled and pm_iir are protected by
559 struct work_struct work;
560 bool interrupts_enabled;
563 /* PM interrupt bits that should never be masked */
566 /* Frequencies are stored in potentially platform dependent multiples.
567 * In other words, *_freq needs to be multiplied by X to be interesting.
568 * Soft limits are those which are used for the dynamic reclocking done
569 * by the driver (raise frequencies under heavy loads, and lower for
570 * lighter loads). Hard limits are those imposed by the hardware.
572 * A distinction is made for overclocking, which is never enabled by
573 * default, and is considered to be above the hard limit if it's
576 u8 cur_freq; /* Current frequency (cached, may not == HW) */
577 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
578 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
579 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
580 u8 min_freq; /* AKA RPn. Minimum frequency */
581 u8 boost_freq; /* Frequency to request when wait boosting */
582 u8 idle_freq; /* Frequency to request when we are idle */
583 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
584 u8 rp1_freq; /* "less than" RP0 power/freqency */
585 u8 rp0_freq; /* Non-overclocked max frequency. */
586 u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
593 enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
594 unsigned int interactive;
596 u8 up_threshold; /* Current %busy required to uplock */
597 u8 down_threshold; /* Current %busy required to downclock */
601 atomic_t num_waiters;
604 /* manual wa residency calculations */
605 struct intel_rps_ei ei;
608 struct intel_gen6_power_mgmt {
609 struct intel_rps rps;
612 /* defined intel_pm.c */
613 extern spinlock_t mchdev_lock;
615 struct intel_ilk_power_mgmt {
623 unsigned long last_time1;
624 unsigned long chipset_power;
627 unsigned long gfx_power;
634 #define MAX_L3_SLICES 2
635 struct intel_l3_parity {
636 u32 *remap_info[MAX_L3_SLICES];
637 struct work_struct error_work;
642 /** Memory allocator for GTT stolen memory */
643 struct drm_mm stolen;
644 /** Protects the usage of the GTT stolen memory allocator. This is
645 * always the inner lock when overlapping with struct_mutex. */
646 struct mutex stolen_lock;
648 /* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
652 * List of objects which are purgeable.
654 struct list_head purge_list;
657 * List of objects which have allocated pages and are shrinkable.
659 struct list_head shrink_list;
662 * List of objects which are pending destruction.
664 struct llist_head free_list;
665 struct work_struct free_work;
667 * Count of objects pending destructions. Used to skip needlessly
668 * waiting on an RCU barrier if no objects are waiting to be freed.
673 * Small stash of WC pages
675 struct pagestash wc_stash;
678 * tmpfs instance used for shmem backed objects
680 struct vfsmount *gemfs;
682 struct intel_memory_region *regions[INTEL_REGION_UNKNOWN];
684 struct notifier_block oom_notifier;
685 struct notifier_block vmap_notifier;
686 struct shrinker shrinker;
689 * Workqueue to fault in userptr pages, flushed by the execbuf
690 * when required but otherwise left to userspace to try again
693 struct workqueue_struct *userptr_wq;
695 /* shrinker accounting, also useful for userland debugging */
700 #define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
702 #define I915_RESET_TIMEOUT (10 * HZ) /* 10s */
703 #define I915_FENCE_TIMEOUT (10 * HZ) /* 10s */
705 #define I915_ENGINE_DEAD_TIMEOUT (4 * HZ) /* Seqno, head and subunits dead */
706 #define I915_SEQNO_DEAD_TIMEOUT (12 * HZ) /* Seqno dead with active head */
708 #define I915_ENGINE_WEDGED_TIMEOUT (60 * HZ) /* Reset but no recovery? */
710 struct ddi_vbt_port_info {
711 /* Non-NULL if port present. */
712 const struct child_device_config *child;
717 * This is an index in the HDMI/DVI DDI buffer translation table.
718 * The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
719 * populate this field.
721 #define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
728 u8 supports_typec_usb:1;
731 u8 alternate_aux_channel;
732 u8 alternate_ddc_pin;
736 int dp_max_link_rate; /* 0 for not limited by VBT */
739 enum psr_lines_to_wait {
740 PSR_0_LINES_TO_WAIT = 0,
746 struct intel_vbt_data {
747 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
748 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
751 unsigned int int_tv_support:1;
752 unsigned int lvds_dither:1;
753 unsigned int int_crt_support:1;
754 unsigned int lvds_use_ssc:1;
755 unsigned int int_lvds_support:1;
756 unsigned int display_clock_mode:1;
757 unsigned int fdi_rx_polarity_inverted:1;
758 unsigned int panel_type:4;
760 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
761 enum drm_panel_orientation orientation;
763 enum drrs_support_type drrs_type;
773 struct edp_power_seq pps;
779 bool require_aux_wakeup;
781 enum psr_lines_to_wait lines_to_wait;
782 int tp1_wakeup_time_us;
783 int tp2_tp3_wakeup_time_us;
784 int psr2_tp2_tp3_wakeup_time_us;
791 u8 min_brightness; /* min_brightness/255 of max */
792 u8 controller; /* brightness controller number */
793 enum intel_backlight_type type;
799 struct mipi_config *config;
800 struct mipi_pps_data *pps;
806 const u8 *sequence[MIPI_SEQ_MAX];
807 u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
808 enum drm_panel_orientation orientation;
814 struct child_device_config *child_dev;
816 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
817 struct sdvo_device_mapping sdvo_mappings[2];
820 enum intel_ddb_partitioning {
822 INTEL_DDB_PART_5_6, /* IVB+ */
825 struct intel_wm_level {
833 struct ilk_wm_values {
839 enum intel_ddb_partitioning partitioning;
843 u16 plane[I915_MAX_PLANES];
853 struct vlv_wm_ddl_values {
854 u8 plane[I915_MAX_PLANES];
857 struct vlv_wm_values {
858 struct g4x_pipe_wm pipe[3];
860 struct vlv_wm_ddl_values ddl[3];
865 struct g4x_wm_values {
866 struct g4x_pipe_wm pipe[2];
868 struct g4x_sr_wm hpll;
874 struct skl_ddb_entry {
875 u16 start, end; /* in number of blocks, 'end' is exclusive */
878 static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
880 return entry->end - entry->start;
883 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
884 const struct skl_ddb_entry *e2)
886 if (e1->start == e2->start && e1->end == e2->end)
892 struct skl_ddb_allocation {
893 u8 enabled_slices; /* GEN11 has configurable 2 slices */
896 struct skl_ddb_values {
897 unsigned dirty_pipes;
898 struct skl_ddb_allocation ddb;
901 struct skl_wm_level {
909 /* Stores plane specific WM parameters */
910 struct skl_wm_params {
911 bool x_tiled, y_tiled;
916 u32 plane_pixel_rate;
918 u32 plane_bytes_per_line;
919 uint_fixed_16_16_t plane_blocks_per_line;
920 uint_fixed_16_16_t y_tile_minimum;
925 enum intel_pipe_crc_source {
926 INTEL_PIPE_CRC_SOURCE_NONE,
927 INTEL_PIPE_CRC_SOURCE_PLANE1,
928 INTEL_PIPE_CRC_SOURCE_PLANE2,
929 INTEL_PIPE_CRC_SOURCE_PLANE3,
930 INTEL_PIPE_CRC_SOURCE_PLANE4,
931 INTEL_PIPE_CRC_SOURCE_PLANE5,
932 INTEL_PIPE_CRC_SOURCE_PLANE6,
933 INTEL_PIPE_CRC_SOURCE_PLANE7,
934 INTEL_PIPE_CRC_SOURCE_PIPE,
935 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
936 INTEL_PIPE_CRC_SOURCE_TV,
937 INTEL_PIPE_CRC_SOURCE_DP_B,
938 INTEL_PIPE_CRC_SOURCE_DP_C,
939 INTEL_PIPE_CRC_SOURCE_DP_D,
940 INTEL_PIPE_CRC_SOURCE_AUTO,
941 INTEL_PIPE_CRC_SOURCE_MAX,
944 #define INTEL_PIPE_CRC_ENTRIES_NR 128
945 struct intel_pipe_crc {
948 enum intel_pipe_crc_source source;
951 struct i915_frontbuffer_tracking {
955 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
962 struct i915_virtual_gpu {
963 struct mutex lock; /* serialises sending of g2v_notify command pkts */
968 /* used in computing the new watermarks state */
969 struct intel_wm_config {
970 unsigned int num_pipes_active;
971 bool sprites_enabled;
975 struct intel_cdclk_state {
976 unsigned int cdclk, vco, ref, bypass;
980 struct drm_i915_private {
981 struct drm_device drm;
983 const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
984 struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
985 struct intel_driver_caps caps;
988 * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
989 * end of stolen which we can optionally use to create GEM objects
990 * backed by stolen memory. Note that stolen_usable_size tells us
991 * exactly how much of this we are actually allowed to use, given that
992 * some portion of it is in fact reserved for use by hardware functions.
996 * Reseved portion of Data Stolen Memory
998 struct resource dsm_reserved;
1001 * Stolen memory is segmented in hardware with different portions
1002 * offlimits to certain functions.
1004 * The drm_mm is initialised to the total accessible range, as found
1005 * from the PCI config. On Broadwell+, this is further restricted to
1006 * avoid the first page! The upper end of stolen memory is reserved for
1007 * hardware functions and similarly removed from the accessible range.
1009 resource_size_t stolen_usable_size; /* Total size minus reserved ranges */
1011 struct intel_uncore uncore;
1012 struct intel_uncore_mmio_debug mmio_debug;
1014 struct i915_virtual_gpu vgpu;
1016 struct intel_gvt *gvt;
1018 struct intel_wopcm wopcm;
1020 struct intel_csr csr;
1022 struct intel_gmbus gmbus[GMBUS_NUM_PINS];
1024 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1025 * controller on different i2c buses. */
1026 struct mutex gmbus_mutex;
1029 * Base address of where the gmbus and gpio blocks are located (either
1030 * on PCH or on SoC for platforms without PCH).
1034 u32 hsw_psr_mmio_adjust;
1036 /* MMIO base address for MIPI regs */
1041 wait_queue_head_t gmbus_wait_queue;
1043 struct pci_dev *bridge_dev;
1045 /* Context used internally to idle the GPU and setup initial state */
1046 struct i915_gem_context *kernel_context;
1048 struct intel_engine_cs *engine[I915_NUM_ENGINES];
1049 struct rb_root uabi_engines;
1051 struct resource mch_res;
1053 /* protects the irq masks */
1054 spinlock_t irq_lock;
1056 bool display_irqs_enabled;
1058 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1059 struct pm_qos_request pm_qos;
1061 /* Sideband mailbox protection */
1062 struct mutex sb_lock;
1063 struct pm_qos_request sb_qos;
1065 /** Cached value of IMR to avoid reads in updating the bitfield */
1068 u32 de_irq_mask[I915_MAX_PIPES];
1071 u32 pipestat_irq_mask[I915_MAX_PIPES];
1073 struct i915_hotplug hotplug;
1074 struct intel_fbc fbc;
1075 struct i915_drrs drrs;
1076 struct intel_opregion opregion;
1077 struct intel_vbt_data vbt;
1079 bool preserve_bios_swizzle;
1082 struct intel_overlay *overlay;
1084 /* backlight registers and fields in struct intel_panel */
1085 struct mutex backlight_lock;
1087 /* protects panel power sequencer state */
1088 struct mutex pps_mutex;
1090 unsigned int fsb_freq, mem_freq, is_ddr3;
1091 unsigned int skl_preferred_vco_freq;
1092 unsigned int max_cdclk_freq;
1094 unsigned int max_dotclk_freq;
1095 unsigned int rawclk_freq;
1096 unsigned int hpll_freq;
1097 unsigned int fdi_pll_freq;
1098 unsigned int czclk_freq;
1102 * The current logical cdclk state.
1103 * See intel_atomic_state.cdclk.logical
1105 * For reading holding any crtc lock is sufficient,
1106 * for writing must hold all of them.
1108 struct intel_cdclk_state logical;
1110 * The current actual cdclk state.
1111 * See intel_atomic_state.cdclk.actual
1113 struct intel_cdclk_state actual;
1114 /* The current hardware cdclk state */
1115 struct intel_cdclk_state hw;
1117 /* cdclk, divider, and ratio table from bspec */
1118 const struct intel_cdclk_vals *table;
1120 int force_min_cdclk;
1124 * wq - Driver workqueue for GEM.
1126 * NOTE: Work items scheduled here are not allowed to grab any modeset
1127 * locks, for otherwise the flushing done in the pageflip code will
1128 * result in deadlocks.
1130 struct workqueue_struct *wq;
1132 /* ordered wq for modesets */
1133 struct workqueue_struct *modeset_wq;
1134 /* unbound hipri wq for page flips/plane updates */
1135 struct workqueue_struct *flip_wq;
1137 /* Display functions */
1138 struct drm_i915_display_funcs display;
1140 /* PCH chipset type */
1141 enum intel_pch pch_type;
1142 unsigned short pch_id;
1144 unsigned long quirks;
1146 struct drm_atomic_state *modeset_restore_state;
1147 struct drm_modeset_acquire_ctx reset_ctx;
1149 struct i915_ggtt ggtt; /* VM representing the global address space */
1151 struct i915_gem_mm mm;
1152 DECLARE_HASHTABLE(mm_structs, 7);
1153 struct mutex mm_lock;
1155 /* Kernel Modesetting */
1157 struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1158 struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1160 #ifdef CONFIG_DEBUG_FS
1161 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1164 /* dpll and cdclk state is protected by connection_mutex */
1165 int num_shared_dpll;
1166 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1167 const struct intel_dpll_mgr *dpll_mgr;
1170 * dpll_lock serializes intel_{prepare,enable,disable}_shared_dpll.
1171 * Must be global rather than per dpll, because on some platforms
1172 * plls share registers.
1174 struct mutex dpll_lock;
1177 /* minimum acceptable cdclk for each pipe */
1178 int min_cdclk[I915_MAX_PIPES];
1179 /* minimum acceptable voltage level for each pipe */
1180 u8 min_voltage_level[I915_MAX_PIPES];
1182 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1184 struct i915_wa_list gt_wa_list;
1186 struct i915_frontbuffer_tracking fb_tracking;
1188 struct intel_atomic_helper {
1189 struct llist_head free_list;
1190 struct work_struct free_work;
1195 bool mchbar_need_disable;
1197 struct intel_l3_parity l3_parity;
1201 * Cannot be determined by PCIID. You must always read a register.
1205 /* gen6+ GT PM state */
1206 struct intel_gen6_power_mgmt gt_pm;
1208 /* ilk-only ips/rps state. Everything in here is protected by the global
1209 * mchdev_lock in intel_pm.c */
1210 struct intel_ilk_power_mgmt ips;
1212 struct i915_power_domains power_domains;
1214 struct i915_psr psr;
1216 struct i915_gpu_error gpu_error;
1218 struct drm_i915_gem_object *vlv_pctx;
1220 /* list of fbdev register on this device */
1221 struct intel_fbdev *fbdev;
1222 struct work_struct fbdev_suspend_work;
1224 struct drm_property *broadcast_rgb_property;
1225 struct drm_property *force_audio_property;
1227 /* hda/i915 audio component */
1228 struct i915_audio_component *audio_component;
1229 bool audio_component_registered;
1231 * av_mutex - mutex for audio/video sync
1234 struct mutex av_mutex;
1235 int audio_power_refcount;
1236 u32 audio_freq_cntrl;
1240 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
1241 u32 chv_phy_control;
1243 * Shadows for CHV DPLL_MD regs to keep the state
1244 * checker somewhat working in the presence hardware
1245 * crappiness (can't read out DPLL_MD for pipes B & C).
1247 u32 chv_dpll_md[I915_MAX_PIPES];
1251 bool power_domains_suspended;
1252 struct i915_suspend_saved_registers regfile;
1253 struct vlv_s0ix_state *vlv_s0ix_state;
1256 I915_SAGV_UNKNOWN = 0,
1259 I915_SAGV_NOT_CONTROLLED
1262 u32 sagv_block_time_us;
1266 * Raw watermark latency values:
1267 * in 0.1us units for WM0,
1268 * in 0.5us units for WM1+.
1277 * Raw watermark memory latency values
1278 * for SKL for all 8 levels
1283 /* current hardware state */
1285 struct ilk_wm_values hw;
1286 struct skl_ddb_values skl_hw;
1287 struct vlv_wm_values vlv;
1288 struct g4x_wm_values g4x;
1294 * Should be held around atomic WM register writing; also
1295 * protects * intel_crtc->wm.active and
1296 * crtc_state->wm.need_postvbl_update.
1298 struct mutex wm_mutex;
1301 * Set during HW readout of watermarks/DDB. Some platforms
1302 * need to know when we're still using BIOS-provided values
1303 * (which we don't fully trust).
1305 bool distrust_bios_wm;
1314 bool symmetric_memory;
1315 enum intel_dram_type {
1324 struct intel_bw_info {
1325 unsigned int deratedbw[3]; /* for each QGV point */
1330 struct drm_private_obj bw_obj;
1332 struct intel_runtime_pm runtime_pm;
1334 struct i915_perf perf;
1336 /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
1340 struct notifier_block pm_notifier;
1342 struct i915_gem_contexts {
1343 spinlock_t lock; /* locks list */
1344 struct list_head list;
1346 struct llist_head free_list;
1347 struct work_struct free_work;
1351 /* For i915gm/i945gm vblank irq workaround */
1354 /* perform PHY state sanity checks? */
1355 bool chv_phy_assert[2];
1359 /* Used to save the pipe-to-encoder mapping for audio */
1360 struct intel_encoder *av_enc_map[I915_MAX_PIPES];
1362 /* necessary resource sharing with HDMI LPE audio driver. */
1364 struct platform_device *platdev;
1368 struct i915_pmu pmu;
1370 struct i915_hdcp_comp_master *hdcp_master;
1371 bool hdcp_comp_added;
1373 /* Mutex to protect the above hdcp component related values. */
1374 struct mutex hdcp_comp_mutex;
1377 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
1378 * will be rejected. Instead look for a better place.
1382 struct dram_dimm_info {
1383 u8 size, width, ranks;
1386 struct dram_channel_info {
1387 struct dram_dimm_info dimm_l, dimm_s;
1392 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
1394 return container_of(dev, struct drm_i915_private, drm);
1397 static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
1399 return dev_get_drvdata(kdev);
1402 static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
1404 return pci_get_drvdata(pdev);
1407 /* Simple iterator over all initialised engines */
1408 #define for_each_engine(engine__, dev_priv__, id__) \
1410 (id__) < I915_NUM_ENGINES; \
1412 for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
1414 /* Iterator over subset of engines selected by mask */
1415 #define for_each_engine_masked(engine__, gt__, mask__, tmp__) \
1416 for ((tmp__) = (mask__) & INTEL_INFO((gt__)->i915)->engine_mask; \
1418 ((engine__) = (gt__)->engine[__mask_next_bit(tmp__)]), 1 : \
1421 #define rb_to_uabi_engine(rb) \
1422 rb_entry_safe(rb, struct intel_engine_cs, uabi_node)
1424 #define for_each_uabi_engine(engine__, i915__) \
1425 for ((engine__) = rb_to_uabi_engine(rb_first(&(i915__)->uabi_engines));\
1427 (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
1429 #define I915_GTT_OFFSET_NONE ((u32)-1)
1432 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
1433 * considered to be the frontbuffer for the given plane interface-wise. This
1434 * doesn't mean that the hw necessarily already scans it out, but that any
1435 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
1437 * We have one bit per pipe and per scanout plane type.
1439 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
1440 #define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
1441 BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
1442 BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
1443 BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
1445 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
1446 BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1447 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
1448 GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
1449 INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
1451 #define INTEL_INFO(dev_priv) (&(dev_priv)->__info)
1452 #define RUNTIME_INFO(dev_priv) (&(dev_priv)->__runtime)
1453 #define DRIVER_CAPS(dev_priv) (&(dev_priv)->caps)
1455 #define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
1456 #define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
1458 #define REVID_FOREVER 0xff
1459 #define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
1461 #define INTEL_GEN_MASK(s, e) ( \
1462 BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
1463 BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
1464 GENMASK((e) - 1, (s) - 1))
1466 /* Returns true if Gen is in inclusive range [Start, End] */
1467 #define IS_GEN_RANGE(dev_priv, s, e) \
1468 (!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
1470 #define IS_GEN(dev_priv, n) \
1471 (BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
1472 INTEL_INFO(dev_priv)->gen == (n))
1474 #define HAS_DSB(dev_priv) (INTEL_INFO(dev_priv)->display.has_dsb)
1477 * Return true if revision is in range [since,until] inclusive.
1479 * Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
1481 #define IS_REVID(p, since, until) \
1482 (INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
1484 static __always_inline unsigned int
1485 __platform_mask_index(const struct intel_runtime_info *info,
1486 enum intel_platform p)
1488 const unsigned int pbits =
1489 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1491 /* Expand the platform_mask array if this fails. */
1492 BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
1493 pbits * ARRAY_SIZE(info->platform_mask));
1498 static __always_inline unsigned int
1499 __platform_mask_bit(const struct intel_runtime_info *info,
1500 enum intel_platform p)
1502 const unsigned int pbits =
1503 BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
1505 return p % pbits + INTEL_SUBPLATFORM_BITS;
1509 intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
1511 const unsigned int pi = __platform_mask_index(info, p);
1513 return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
1516 static __always_inline bool
1517 IS_PLATFORM(const struct drm_i915_private *i915, enum intel_platform p)
1519 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1520 const unsigned int pi = __platform_mask_index(info, p);
1521 const unsigned int pb = __platform_mask_bit(info, p);
1523 BUILD_BUG_ON(!__builtin_constant_p(p));
1525 return info->platform_mask[pi] & BIT(pb);
1528 static __always_inline bool
1529 IS_SUBPLATFORM(const struct drm_i915_private *i915,
1530 enum intel_platform p, unsigned int s)
1532 const struct intel_runtime_info *info = RUNTIME_INFO(i915);
1533 const unsigned int pi = __platform_mask_index(info, p);
1534 const unsigned int pb = __platform_mask_bit(info, p);
1535 const unsigned int msb = BITS_PER_TYPE(info->platform_mask[0]) - 1;
1536 const u32 mask = info->platform_mask[pi];
1538 BUILD_BUG_ON(!__builtin_constant_p(p));
1539 BUILD_BUG_ON(!__builtin_constant_p(s));
1540 BUILD_BUG_ON((s) >= INTEL_SUBPLATFORM_BITS);
1542 /* Shift and test on the MSB position so sign flag can be used. */
1543 return ((mask << (msb - pb)) & (mask << (msb - s))) & BIT(msb);
1546 #define IS_MOBILE(dev_priv) (INTEL_INFO(dev_priv)->is_mobile)
1548 #define IS_I830(dev_priv) IS_PLATFORM(dev_priv, INTEL_I830)
1549 #define IS_I845G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I845G)
1550 #define IS_I85X(dev_priv) IS_PLATFORM(dev_priv, INTEL_I85X)
1551 #define IS_I865G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I865G)
1552 #define IS_I915G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915G)
1553 #define IS_I915GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915GM)
1554 #define IS_I945G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945G)
1555 #define IS_I945GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945GM)
1556 #define IS_I965G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965G)
1557 #define IS_I965GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965GM)
1558 #define IS_G45(dev_priv) IS_PLATFORM(dev_priv, INTEL_G45)
1559 #define IS_GM45(dev_priv) IS_PLATFORM(dev_priv, INTEL_GM45)
1560 #define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
1561 #define IS_PINEVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
1562 #define IS_G33(dev_priv) IS_PLATFORM(dev_priv, INTEL_G33)
1563 #define IS_IRONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IRONLAKE)
1564 #define IS_IRONLAKE_M(dev_priv) \
1565 (IS_PLATFORM(dev_priv, INTEL_IRONLAKE) && IS_MOBILE(dev_priv))
1566 #define IS_IVYBRIDGE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
1567 #define IS_IVB_GT1(dev_priv) (IS_IVYBRIDGE(dev_priv) && \
1568 INTEL_INFO(dev_priv)->gt == 1)
1569 #define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
1570 #define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
1571 #define IS_HASWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_HASWELL)
1572 #define IS_BROADWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROADWELL)
1573 #define IS_SKYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
1574 #define IS_BROXTON(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROXTON)
1575 #define IS_KABYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
1576 #define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
1577 #define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
1578 #define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
1579 #define IS_ICELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ICELAKE)
1580 #define IS_ELKHARTLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE)
1581 #define IS_TIGERLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
1582 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
1583 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
1584 #define IS_BDW_ULT(dev_priv) \
1585 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULT)
1586 #define IS_BDW_ULX(dev_priv) \
1587 IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULX)
1588 #define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
1589 INTEL_INFO(dev_priv)->gt == 3)
1590 #define IS_HSW_ULT(dev_priv) \
1591 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULT)
1592 #define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
1593 INTEL_INFO(dev_priv)->gt == 3)
1594 #define IS_HSW_GT1(dev_priv) (IS_HASWELL(dev_priv) && \
1595 INTEL_INFO(dev_priv)->gt == 1)
1596 /* ULX machines are also considered ULT. */
1597 #define IS_HSW_ULX(dev_priv) \
1598 IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULX)
1599 #define IS_SKL_ULT(dev_priv) \
1600 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULT)
1601 #define IS_SKL_ULX(dev_priv) \
1602 IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULX)
1603 #define IS_KBL_ULT(dev_priv) \
1604 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULT)
1605 #define IS_KBL_ULX(dev_priv) \
1606 IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULX)
1607 #define IS_SKL_GT2(dev_priv) (IS_SKYLAKE(dev_priv) && \
1608 INTEL_INFO(dev_priv)->gt == 2)
1609 #define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
1610 INTEL_INFO(dev_priv)->gt == 3)
1611 #define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
1612 INTEL_INFO(dev_priv)->gt == 4)
1613 #define IS_KBL_GT2(dev_priv) (IS_KABYLAKE(dev_priv) && \
1614 INTEL_INFO(dev_priv)->gt == 2)
1615 #define IS_KBL_GT3(dev_priv) (IS_KABYLAKE(dev_priv) && \
1616 INTEL_INFO(dev_priv)->gt == 3)
1617 #define IS_CFL_ULT(dev_priv) \
1618 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULT)
1619 #define IS_CFL_ULX(dev_priv) \
1620 IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULX)
1621 #define IS_CFL_GT2(dev_priv) (IS_COFFEELAKE(dev_priv) && \
1622 INTEL_INFO(dev_priv)->gt == 2)
1623 #define IS_CFL_GT3(dev_priv) (IS_COFFEELAKE(dev_priv) && \
1624 INTEL_INFO(dev_priv)->gt == 3)
1625 #define IS_CNL_WITH_PORT_F(dev_priv) \
1626 IS_SUBPLATFORM(dev_priv, INTEL_CANNONLAKE, INTEL_SUBPLATFORM_PORTF)
1627 #define IS_ICL_WITH_PORT_F(dev_priv) \
1628 IS_SUBPLATFORM(dev_priv, INTEL_ICELAKE, INTEL_SUBPLATFORM_PORTF)
1630 #define SKL_REVID_A0 0x0
1631 #define SKL_REVID_B0 0x1
1632 #define SKL_REVID_C0 0x2
1633 #define SKL_REVID_D0 0x3
1634 #define SKL_REVID_E0 0x4
1635 #define SKL_REVID_F0 0x5
1636 #define SKL_REVID_G0 0x6
1637 #define SKL_REVID_H0 0x7
1639 #define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
1641 #define BXT_REVID_A0 0x0
1642 #define BXT_REVID_A1 0x1
1643 #define BXT_REVID_B0 0x3
1644 #define BXT_REVID_B_LAST 0x8
1645 #define BXT_REVID_C0 0x9
1647 #define IS_BXT_REVID(dev_priv, since, until) \
1648 (IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
1650 #define KBL_REVID_A0 0x0
1651 #define KBL_REVID_B0 0x1
1652 #define KBL_REVID_C0 0x2
1653 #define KBL_REVID_D0 0x3
1654 #define KBL_REVID_E0 0x4
1656 #define IS_KBL_REVID(dev_priv, since, until) \
1657 (IS_KABYLAKE(dev_priv) && IS_REVID(dev_priv, since, until))
1659 #define GLK_REVID_A0 0x0
1660 #define GLK_REVID_A1 0x1
1662 #define IS_GLK_REVID(dev_priv, since, until) \
1663 (IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
1665 #define CNL_REVID_A0 0x0
1666 #define CNL_REVID_B0 0x1
1667 #define CNL_REVID_C0 0x2
1669 #define IS_CNL_REVID(p, since, until) \
1670 (IS_CANNONLAKE(p) && IS_REVID(p, since, until))
1672 #define ICL_REVID_A0 0x0
1673 #define ICL_REVID_A2 0x1
1674 #define ICL_REVID_B0 0x3
1675 #define ICL_REVID_B2 0x4
1676 #define ICL_REVID_C0 0x5
1678 #define IS_ICL_REVID(p, since, until) \
1679 (IS_ICELAKE(p) && IS_REVID(p, since, until))
1681 #define TGL_REVID_A0 0x0
1683 #define IS_TGL_REVID(p, since, until) \
1684 (IS_TIGERLAKE(p) && IS_REVID(p, since, until))
1686 #define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
1687 #define IS_GEN9_LP(dev_priv) (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
1688 #define IS_GEN9_BC(dev_priv) (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
1690 #define HAS_ENGINE(dev_priv, id) (INTEL_INFO(dev_priv)->engine_mask & BIT(id))
1692 #define ENGINE_INSTANCES_MASK(dev_priv, first, count) ({ \
1693 unsigned int first__ = (first); \
1694 unsigned int count__ = (count); \
1695 (INTEL_INFO(dev_priv)->engine_mask & \
1696 GENMASK(first__ + count__ - 1, first__)) >> first__; \
1698 #define VDBOX_MASK(dev_priv) \
1699 ENGINE_INSTANCES_MASK(dev_priv, VCS0, I915_MAX_VCS)
1700 #define VEBOX_MASK(dev_priv) \
1701 ENGINE_INSTANCES_MASK(dev_priv, VECS0, I915_MAX_VECS)
1703 #define HAS_LLC(dev_priv) (INTEL_INFO(dev_priv)->has_llc)
1704 #define HAS_SNOOP(dev_priv) (INTEL_INFO(dev_priv)->has_snoop)
1705 #define HAS_EDRAM(dev_priv) ((dev_priv)->edram_size_mb)
1706 #define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
1707 IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
1709 #define HWS_NEEDS_PHYSICAL(dev_priv) (INTEL_INFO(dev_priv)->hws_needs_physical)
1711 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
1712 (INTEL_INFO(dev_priv)->has_logical_ring_contexts)
1713 #define HAS_LOGICAL_RING_ELSQ(dev_priv) \
1714 (INTEL_INFO(dev_priv)->has_logical_ring_elsq)
1715 #define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
1716 (INTEL_INFO(dev_priv)->has_logical_ring_preemption)
1718 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
1720 #define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_type)
1721 #define HAS_PPGTT(dev_priv) \
1722 (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
1723 #define HAS_FULL_PPGTT(dev_priv) \
1724 (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
1726 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
1727 GEM_BUG_ON((sizes) == 0); \
1728 ((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
1731 #define HAS_OVERLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_overlay)
1732 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
1733 (INTEL_INFO(dev_priv)->display.overlay_needs_physical)
1735 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
1736 #define HAS_BROKEN_CS_TLB(dev_priv) (IS_I830(dev_priv) || IS_I845G(dev_priv))
1738 /* WaRsDisableCoarsePowerGating:skl,cnl */
1739 #define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
1740 (IS_CANNONLAKE(dev_priv) || \
1741 IS_SKL_GT3(dev_priv) || IS_SKL_GT4(dev_priv))
1743 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
1744 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
1745 IS_GEMINILAKE(dev_priv) || \
1746 IS_KABYLAKE(dev_priv))
1748 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
1749 * rows, which changed the alignment requirements and fence programming.
1751 #define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
1752 !(IS_I915G(dev_priv) || \
1753 IS_I915GM(dev_priv)))
1754 #define SUPPORTS_TV(dev_priv) (INTEL_INFO(dev_priv)->display.supports_tv)
1755 #define I915_HAS_HOTPLUG(dev_priv) (INTEL_INFO(dev_priv)->display.has_hotplug)
1757 #define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
1758 #define HAS_FBC(dev_priv) (INTEL_INFO(dev_priv)->display.has_fbc)
1759 #define HAS_CUR_FBC(dev_priv) (!HAS_GMCH(dev_priv) && INTEL_GEN(dev_priv) >= 7)
1761 #define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
1763 #define HAS_DP_MST(dev_priv) (INTEL_INFO(dev_priv)->display.has_dp_mst)
1765 #define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
1766 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
1767 #define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
1768 #define HAS_TRANSCODER_EDP(dev_priv) (INTEL_INFO(dev_priv)->trans_offsets[TRANSCODER_EDP] != 0)
1770 #define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)
1771 #define HAS_RC6p(dev_priv) (INTEL_INFO(dev_priv)->has_rc6p)
1772 #define HAS_RC6pp(dev_priv) (false) /* HW was never validated */
1774 #define HAS_RPS(dev_priv) (INTEL_INFO(dev_priv)->has_rps)
1776 #define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
1778 #define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
1779 #define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
1781 #define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
1783 #define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
1785 #define HAS_GT_UC(dev_priv) (INTEL_INFO(dev_priv)->has_gt_uc)
1787 /* Having GuC is not the same as using GuC */
1788 #define USES_GUC(dev_priv) intel_uc_uses_guc(&(dev_priv)->gt.uc)
1789 #define USES_GUC_SUBMISSION(dev_priv) intel_uc_uses_guc_submission(&(dev_priv)->gt.uc)
1791 #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
1793 #define HAS_GLOBAL_MOCS_REGISTERS(dev_priv) (INTEL_INFO(dev_priv)->has_global_mocs)
1796 #define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
1798 #define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
1800 /* DPF == dynamic parity feature */
1801 #define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
1802 #define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
1803 2 : HAS_L3_DPF(dev_priv))
1805 #define GT_FREQUENCY_MULTIPLIER 50
1806 #define GEN9_FREQ_SCALER 3
1808 #define INTEL_NUM_PIPES(dev_priv) (hweight8(INTEL_INFO(dev_priv)->pipe_mask))
1810 #define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->pipe_mask != 0)
1812 /* Only valid when HAS_DISPLAY() is true */
1813 #define INTEL_DISPLAY_ENABLED(dev_priv) (WARN_ON(!HAS_DISPLAY(dev_priv)), !i915_modparams.disable_display)
1815 static inline bool intel_vtd_active(void)
1817 #ifdef CONFIG_INTEL_IOMMU
1818 if (intel_iommu_gfx_mapped)
1824 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
1826 return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
1830 intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
1832 return IS_BROXTON(dev_priv) && intel_vtd_active();
1836 #ifdef CONFIG_COMPAT
1837 long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
1839 #define i915_compat_ioctl NULL
1841 extern const struct dev_pm_ops i915_pm_ops;
1843 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
1844 void i915_driver_remove(struct drm_i915_private *i915);
1846 int i915_resume_switcheroo(struct drm_i915_private *i915);
1847 int i915_suspend_switcheroo(struct drm_i915_private *i915, pm_message_t state);
1849 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
1851 static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
1853 return dev_priv->gvt;
1856 static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
1858 return dev_priv->vgpu.active;
1861 int i915_getparam_ioctl(struct drm_device *dev, void *data,
1862 struct drm_file *file_priv);
1865 int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
1866 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
1867 void i915_gem_sanitize(struct drm_i915_private *i915);
1868 void i915_gem_init_early(struct drm_i915_private *dev_priv);
1869 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
1870 int i915_gem_freeze(struct drm_i915_private *dev_priv);
1871 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
1873 struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915);
1875 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
1878 * A single pass should suffice to release all the freed objects (along
1879 * most call paths) , but be a little more paranoid in that freeing
1880 * the objects does take a little amount of time, during which the rcu
1881 * callbacks could have added new objects into the freed list, and
1882 * armed the work again.
1884 while (atomic_read(&i915->mm.free_count)) {
1885 flush_work(&i915->mm.free_work);
1890 static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
1893 * Similar to objects above (see i915_gem_drain_freed-objects), in
1894 * general we have workers that are armed by RCU and then rearm
1895 * themselves in their callbacks. To be paranoid, we need to
1896 * drain the workqueue a second time after waiting for the RCU
1897 * grace period so that we catch work queued via RCU from the first
1898 * pass. As neither drain_workqueue() nor flush_workqueue() report
1899 * a result, we make an assumption that we only don't require more
1900 * than 3 passes to catch all _recursive_ RCU delayed work.
1905 flush_workqueue(i915->wq);
1907 i915_gem_drain_freed_objects(i915);
1909 drain_workqueue(i915->wq);
1912 struct i915_vma * __must_check
1913 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
1914 const struct i915_ggtt_view *view,
1919 int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
1920 unsigned long flags);
1921 #define I915_GEM_OBJECT_UNBIND_ACTIVE BIT(0)
1923 void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
1925 static inline int __must_check
1926 i915_mutex_lock_interruptible(struct drm_device *dev)
1928 return mutex_lock_interruptible(&dev->struct_mutex);
1931 int i915_gem_dumb_create(struct drm_file *file_priv,
1932 struct drm_device *dev,
1933 struct drm_mode_create_dumb *args);
1934 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
1935 u32 handle, u64 *offset);
1936 int i915_gem_mmap_gtt_version(void);
1938 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
1940 static inline u32 i915_reset_count(struct i915_gpu_error *error)
1942 return atomic_read(&error->reset_count);
1945 static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
1946 struct intel_engine_cs *engine)
1948 return atomic_read(&error->reset_engine_count[engine->uabi_class]);
1951 void i915_gem_init_mmio(struct drm_i915_private *i915);
1952 int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
1953 void i915_gem_driver_register(struct drm_i915_private *i915);
1954 void i915_gem_driver_unregister(struct drm_i915_private *i915);
1955 void i915_gem_driver_remove(struct drm_i915_private *dev_priv);
1956 void i915_gem_driver_release(struct drm_i915_private *dev_priv);
1957 void i915_gem_suspend(struct drm_i915_private *dev_priv);
1958 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
1959 void i915_gem_resume(struct drm_i915_private *dev_priv);
1960 vm_fault_t i915_gem_fault(struct vm_fault *vmf);
1962 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
1963 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
1965 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
1966 enum i915_cache_level cache_level);
1968 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
1969 struct dma_buf *dma_buf);
1971 struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags);
1973 static inline struct i915_gem_context *
1974 __i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
1976 return idr_find(&file_priv->context_idr, id);
1979 static inline struct i915_gem_context *
1980 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
1982 struct i915_gem_context *ctx;
1985 ctx = __i915_gem_context_lookup_rcu(file_priv, id);
1986 if (ctx && !kref_get_unless_zero(&ctx->ref))
1993 /* i915_gem_evict.c */
1994 int __must_check i915_gem_evict_something(struct i915_address_space *vm,
1995 u64 min_size, u64 alignment,
1996 unsigned long color,
1999 int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
2000 struct drm_mm_node *node,
2001 unsigned int flags);
2002 int i915_gem_evict_vm(struct i915_address_space *vm);
2004 void i915_gem_cleanup_memory_regions(struct drm_i915_private *i915);
2005 int i915_gem_init_memory_regions(struct drm_i915_private *i915);
2007 /* i915_gem_internal.c */
2008 struct drm_i915_gem_object *
2009 i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
2012 /* i915_gem_tiling.c */
2013 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
2015 struct drm_i915_private *i915 = to_i915(obj->base.dev);
2017 return i915->ggtt.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
2018 i915_gem_object_is_tiled(obj);
2021 u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
2022 unsigned int tiling, unsigned int stride);
2023 u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
2024 unsigned int tiling, unsigned int stride);
2026 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
2028 /* i915_cmd_parser.c */
2029 int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
2030 void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
2031 void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
2032 int intel_engine_cmd_parser(struct intel_engine_cs *engine,
2033 struct drm_i915_gem_object *batch_obj,
2034 struct drm_i915_gem_object *shadow_batch_obj,
2035 u32 batch_start_offset,
2039 /* intel_device_info.c */
2040 static inline struct intel_device_info *
2041 mkwrite_device_info(struct drm_i915_private *dev_priv)
2043 return (struct intel_device_info *)INTEL_INFO(dev_priv);
2046 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
2047 struct drm_file *file);
2049 #define __I915_REG_OP(op__, dev_priv__, ...) \
2050 intel_uncore_##op__(&(dev_priv__)->uncore, __VA_ARGS__)
2052 #define I915_READ(reg__) __I915_REG_OP(read, dev_priv, (reg__))
2053 #define I915_WRITE(reg__, val__) __I915_REG_OP(write, dev_priv, (reg__), (val__))
2055 #define POSTING_READ(reg__) __I915_REG_OP(posting_read, dev_priv, (reg__))
2057 /* These are untraced mmio-accessors that are only valid to be used inside
2058 * critical sections, such as inside IRQ handlers, where forcewake is explicitly
2061 * Think twice, and think again, before using these.
2063 * As an example, these accessors can possibly be used between:
2065 * spin_lock_irq(&dev_priv->uncore.lock);
2066 * intel_uncore_forcewake_get__locked();
2070 * intel_uncore_forcewake_put__locked();
2071 * spin_unlock_irq(&dev_priv->uncore.lock);
2074 * Note: some registers may not need forcewake held, so
2075 * intel_uncore_forcewake_{get,put} can be omitted, see
2076 * intel_uncore_forcewake_for_reg().
2078 * Certain architectures will die if the same cacheline is concurrently accessed
2079 * by different clients (e.g. on Ivybridge). Access to registers should
2080 * therefore generally be serialised, by either the dev_priv->uncore.lock or
2081 * a more localised lock guarding all access to that bank of registers.
2083 #define I915_READ_FW(reg__) __I915_REG_OP(read_fw, dev_priv, (reg__))
2084 #define I915_WRITE_FW(reg__, val__) __I915_REG_OP(write_fw, dev_priv, (reg__), (val__))
2086 /* register wait wrappers for display regs */
2087 #define intel_de_wait_for_register(dev_priv_, reg_, mask_, value_, timeout_) \
2088 intel_wait_for_register(&(dev_priv_)->uncore, \
2089 (reg_), (mask_), (value_), (timeout_))
2091 #define intel_de_wait_for_set(dev_priv_, reg_, mask_, timeout_) ({ \
2092 u32 mask__ = (mask_); \
2093 intel_de_wait_for_register((dev_priv_), (reg_), \
2094 mask__, mask__, (timeout_)); \
2097 #define intel_de_wait_for_clear(dev_priv_, reg_, mask_, timeout_) \
2098 intel_de_wait_for_register((dev_priv_), (reg_), (mask_), 0, (timeout_))
2101 int remap_io_mapping(struct vm_area_struct *vma,
2102 unsigned long addr, unsigned long pfn, unsigned long size,
2103 struct io_mapping *iomap);
2105 static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
2107 if (INTEL_GEN(i915) >= 10)
2108 return CNL_HWS_CSB_WRITE_INDEX;
2110 return I915_HWS_CSB_WRITE_INDEX;
2113 static inline enum i915_map_type
2114 i915_coherent_map_type(struct drm_i915_private *i915)
2116 return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;