1 /* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
23 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 #include <uapi/drm/i915_drm.h>
34 #include <uapi/drm/drm_fourcc.h>
36 #include <linux/io-mapping.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <linux/backlight.h>
40 #include <linux/hash.h>
41 #include <linux/intel-iommu.h>
42 #include <linux/kref.h>
43 #include <linux/mm_types.h>
44 #include <linux/perf_event.h>
45 #include <linux/pm_qos.h>
46 #include <linux/reservation.h>
47 #include <linux/shmem_fs.h>
48 #include <linux/stackdepot.h>
50 #include <drm/intel-gtt.h>
51 #include <drm/drm_legacy.h> /* for struct drm_dma_handle */
52 #include <drm/drm_gem.h>
53 #include <drm/drm_auth.h>
54 #include <drm/drm_cache.h>
55 #include <drm/drm_util.h>
56 #include <drm/drm_dsc.h>
57 #include <drm/drm_connector.h>
59 #include "i915_fixed.h"
60 #include "i915_params.h"
62 #include "i915_utils.h"
64 #include "intel_bios.h"
65 #include "intel_device_info.h"
66 #include "intel_display.h"
67 #include "intel_dpll_mgr.h"
68 #include "intel_lrc.h"
69 #include "intel_opregion.h"
70 #include "intel_ringbuffer.h"
71 #include "intel_uncore.h"
72 #include "intel_wopcm.h"
73 #include "intel_workarounds.h"
77 #include "i915_gem_context.h"
78 #include "i915_gem_fence_reg.h"
79 #include "i915_gem_object.h"
80 #include "i915_gem_gtt.h"
81 #include "i915_gpu_error.h"
82 #include "i915_request.h"
83 #include "i915_scheduler.h"
84 #include "i915_timeline.h"
87 #include "intel_gvt.h"
89 /* General customization:
92 #define DRIVER_NAME "i915"
93 #define DRIVER_DESC "Intel Graphics"
94 #define DRIVER_DATE "20190124"
95 #define DRIVER_TIMESTAMP 1548370857
97 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
98 * WARN_ON()) for hw state sanity checks to check for unexpected conditions
99 * which may not necessarily be a user visible problem. This will either
100 * WARN() or DRM_ERROR() depending on the verbose_checks moduleparam, to
101 * enable distros and users to tailor their preferred amount of i915 abrt
104 #define I915_STATE_WARN(condition, format...) ({ \
105 int __ret_warn_on = !!(condition); \
106 if (unlikely(__ret_warn_on)) \
107 if (!WARN(i915_modparams.verbose_state_checks, format)) \
109 unlikely(__ret_warn_on); \
112 #define I915_STATE_WARN_ON(x) \
113 I915_STATE_WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
115 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
117 bool __i915_inject_load_failure(const char *func, int line);
118 #define i915_inject_load_failure() \
119 __i915_inject_load_failure(__func__, __LINE__)
121 bool i915_error_injected(void);
125 #define i915_inject_load_failure() false
126 #define i915_error_injected() false
130 #define i915_load_error(i915, fmt, ...) \
131 __i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \
134 typedef depot_stack_handle_t intel_wakeref_t;
138 HPD_TV = HPD_NONE, /* TV is known to be unreliable */
151 #define for_each_hpd_pin(__pin) \
152 for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
154 /* Threshold == 5 for long IRQs, 50 for short */
155 #define HPD_STORM_DEFAULT_THRESHOLD 50
157 struct i915_hotplug {
158 struct work_struct hotplug_work;
161 unsigned long last_jiffies;
166 HPD_MARK_DISABLED = 2
168 } stats[HPD_NUM_PINS];
170 struct delayed_work reenable_work;
174 struct work_struct dig_port_work;
176 struct work_struct poll_init_work;
179 unsigned int hpd_storm_threshold;
180 /* Whether or not to count short HPD IRQs in HPD storms */
181 u8 hpd_short_storm_enabled;
184 * if we get a HPD irq from DP and a HPD irq from non-DP
185 * the non-DP HPD could block the workqueue on a mode config
186 * mutex getting, that userspace may have taken. However
187 * userspace is waiting on the DP workqueue to run which is
188 * blocked behind the non-DP one.
190 struct workqueue_struct *dp_wq;
193 #define I915_GEM_GPU_DOMAINS \
194 (I915_GEM_DOMAIN_RENDER | \
195 I915_GEM_DOMAIN_SAMPLER | \
196 I915_GEM_DOMAIN_COMMAND | \
197 I915_GEM_DOMAIN_INSTRUCTION | \
198 I915_GEM_DOMAIN_VERTEX)
200 struct drm_i915_private;
201 struct i915_mm_struct;
202 struct i915_mmu_object;
204 struct drm_i915_file_private {
205 struct drm_i915_private *dev_priv;
206 struct drm_file *file;
210 struct list_head request_list;
211 /* 20ms is a fairly arbitrary limit (greater than the average frame time)
212 * chosen to prevent the CPU getting more than a frame ahead of the GPU
213 * (when using lax throttling for the frontbuffer). We also use it to
214 * offer free GPU waitboosts for severely congested workloads.
216 #define DRM_I915_THROTTLE_JIFFIES msecs_to_jiffies(20)
218 struct idr context_idr;
220 struct intel_rps_client {
224 unsigned int bsd_engine;
227 * Every context ban increments per client ban score. Also
228 * hangs in short succession increments ban score. If ban threshold
229 * is reached, client is considered banned and submitting more work
230 * will fail. This is a stop gap measure to limit the badly behaving
231 * clients access to gpu. Note that unbannable contexts never increment
232 * the client ban score.
234 #define I915_CLIENT_SCORE_HANG_FAST 1
235 #define I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
236 #define I915_CLIENT_SCORE_CONTEXT_BAN 3
237 #define I915_CLIENT_SCORE_BANNED 9
238 /** ban_score: Accumulated score of all ctx bans and fast hangs. */
240 unsigned long hang_timestamp;
243 /* Interface history:
246 * 1.2: Add Power Management
247 * 1.3: Add vblank support
248 * 1.4: Fix cmdbuffer path, add heap destroy
249 * 1.5: Add vblank pipe configuration
250 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
251 * - Support vertical blank on secondary display pipe
253 #define DRIVER_MAJOR 1
254 #define DRIVER_MINOR 6
255 #define DRIVER_PATCHLEVEL 0
257 struct intel_overlay;
258 struct intel_overlay_error_state;
260 struct sdvo_device_mapping {
269 struct intel_connector;
270 struct intel_encoder;
271 struct intel_atomic_state;
272 struct intel_crtc_state;
273 struct intel_initial_plane_config;
277 struct intel_cdclk_state;
279 struct drm_i915_display_funcs {
280 void (*get_cdclk)(struct drm_i915_private *dev_priv,
281 struct intel_cdclk_state *cdclk_state);
282 void (*set_cdclk)(struct drm_i915_private *dev_priv,
283 const struct intel_cdclk_state *cdclk_state);
284 int (*get_fifo_size)(struct drm_i915_private *dev_priv,
285 enum i9xx_plane_id i9xx_plane);
286 int (*compute_pipe_wm)(struct intel_crtc_state *cstate);
287 int (*compute_intermediate_wm)(struct intel_crtc_state *newstate);
288 void (*initial_watermarks)(struct intel_atomic_state *state,
289 struct intel_crtc_state *cstate);
290 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
291 struct intel_crtc_state *cstate);
292 void (*optimize_watermarks)(struct intel_atomic_state *state,
293 struct intel_crtc_state *cstate);
294 int (*compute_global_watermarks)(struct intel_atomic_state *state);
295 void (*update_wm)(struct intel_crtc *crtc);
296 int (*modeset_calc_cdclk)(struct drm_atomic_state *state);
297 /* Returns the active state of the crtc, and if the crtc is active,
298 * fills out the pipe-config with the hw state. */
299 bool (*get_pipe_config)(struct intel_crtc *,
300 struct intel_crtc_state *);
301 void (*get_initial_plane_config)(struct intel_crtc *,
302 struct intel_initial_plane_config *);
303 int (*crtc_compute_clock)(struct intel_crtc *crtc,
304 struct intel_crtc_state *crtc_state);
305 void (*crtc_enable)(struct intel_crtc_state *pipe_config,
306 struct drm_atomic_state *old_state);
307 void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
308 struct drm_atomic_state *old_state);
309 void (*update_crtcs)(struct drm_atomic_state *state);
310 void (*audio_codec_enable)(struct intel_encoder *encoder,
311 const struct intel_crtc_state *crtc_state,
312 const struct drm_connector_state *conn_state);
313 void (*audio_codec_disable)(struct intel_encoder *encoder,
314 const struct intel_crtc_state *old_crtc_state,
315 const struct drm_connector_state *old_conn_state);
316 void (*fdi_link_train)(struct intel_crtc *crtc,
317 const struct intel_crtc_state *crtc_state);
318 void (*init_clock_gating)(struct drm_i915_private *dev_priv);
319 void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
320 /* clock updates for mode set */
322 /* render clock increase/decrease */
323 /* display clock increase/decrease */
324 /* pll clock increase/decrease */
326 void (*load_csc_matrix)(struct intel_crtc_state *crtc_state);
327 void (*load_luts)(struct intel_crtc_state *crtc_state);
330 #define CSR_VERSION(major, minor) ((major) << 16 | (minor))
331 #define CSR_VERSION_MAJOR(version) ((version) >> 16)
332 #define CSR_VERSION_MINOR(version) ((version) & 0xffff)
335 struct work_struct work;
337 u32 required_version;
338 u32 max_fw_size; /* bytes */
340 u32 dmc_fw_size; /* dwords */
343 i915_reg_t mmioaddr[8];
347 intel_wakeref_t wakeref;
350 enum i915_cache_level {
352 I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
353 I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
354 caches, eg sampler/render caches, and the
355 large Last-Level-Cache. LLC is coherent with
356 the CPU, but L3 is only visible to the GPU. */
357 I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
360 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
371 /* This is always the inner lock when overlapping with struct_mutex and
372 * it's the outer lock when overlapping with stolen_lock. */
375 unsigned int possible_framebuffer_bits;
376 unsigned int busy_bits;
377 unsigned int visible_pipes_mask;
378 struct intel_crtc *crtc;
380 struct drm_mm_node compressed_fb;
381 struct drm_mm_node *compressed_llb;
389 bool underrun_detected;
390 struct work_struct underrun_work;
393 * Due to the atomic rules we can't access some structures without the
394 * appropriate locking, so we cache information here in order to avoid
397 struct intel_fbc_state_cache {
398 struct i915_vma *vma;
402 unsigned int mode_flags;
403 u32 hsw_bdw_pixel_rate;
407 unsigned int rotation;
412 * Display surface base address adjustement for
413 * pageflips. Note that on gen4+ this only adjusts up
414 * to a tile, offsets within a tile are handled in
415 * the hw itself (with the TILEOFF register).
422 u16 pixel_blend_mode;
426 const struct drm_format_info *format;
432 * This structure contains everything that's relevant to program the
433 * hardware registers. When we want to figure out if we need to disable
434 * and re-enable FBC for a new configuration we just check if there's
435 * something different in the struct. The genx_fbc_activate functions
436 * are supposed to read from it in order to program the registers.
438 struct intel_fbc_reg_params {
439 struct i915_vma *vma;
444 enum i9xx_plane_id i9xx_plane;
445 unsigned int fence_y_offset;
449 const struct drm_format_info *format;
454 unsigned int gen9_wa_cfb_stride;
457 const char *no_fbc_reason;
461 * HIGH_RR is the highest eDP panel refresh rate read from EDID
462 * LOW_RR is the lowest eDP panel refresh rate found from EDID
463 * parsing for same resolution.
465 enum drrs_refresh_rate_type {
468 DRRS_MAX_RR, /* RR count */
471 enum drrs_support_type {
472 DRRS_NOT_SUPPORTED = 0,
473 STATIC_DRRS_SUPPORT = 1,
474 SEAMLESS_DRRS_SUPPORT = 2
480 struct delayed_work work;
482 unsigned busy_frontbuffer_bits;
483 enum drrs_refresh_rate_type refresh_rate_type;
484 enum drrs_support_type type;
490 #define I915_PSR_DEBUG_MODE_MASK 0x0f
491 #define I915_PSR_DEBUG_DEFAULT 0x00
492 #define I915_PSR_DEBUG_DISABLE 0x01
493 #define I915_PSR_DEBUG_ENABLE 0x02
494 #define I915_PSR_DEBUG_FORCE_PSR1 0x03
495 #define I915_PSR_DEBUG_IRQ 0x10
499 bool prepared, enabled;
503 struct work_struct work;
504 unsigned busy_frontbuffer_bits;
505 bool sink_psr2_support;
507 bool colorimetry_support;
509 u8 sink_sync_latency;
510 ktime_t last_entry_attempt;
512 bool sink_not_reliable;
514 u16 su_x_granularity;
518 PCH_NONE = 0, /* No PCH present */
519 PCH_IBX, /* Ibexpeak PCH */
520 PCH_CPT, /* Cougarpoint/Pantherpoint PCH */
521 PCH_LPT, /* Lynxpoint/Wildcatpoint PCH */
522 PCH_SPT, /* Sunrisepoint PCH */
523 PCH_KBP, /* Kaby Lake PCH */
524 PCH_CNP, /* Cannon Lake PCH */
525 PCH_ICP, /* Ice Lake PCH */
526 PCH_NOP, /* PCH without south display */
529 enum intel_sbi_destination {
534 #define QUIRK_LVDS_SSC_DISABLE (1<<1)
535 #define QUIRK_INVERT_BRIGHTNESS (1<<2)
536 #define QUIRK_BACKLIGHT_PRESENT (1<<3)
537 #define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
538 #define QUIRK_INCREASE_T12_DELAY (1<<6)
539 #define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
542 struct intel_fbc_work;
545 struct i2c_adapter adapter;
546 #define GMBUS_FORCE_BIT_RETRY (1U << 31)
550 struct i2c_algo_bit_data bit_algo;
551 struct drm_i915_private *dev_priv;
554 struct i915_suspend_saved_registers {
557 u32 saveCACHE_MODE_0;
558 u32 saveMI_ARB_STATE;
562 u64 saveFENCE[I915_MAX_NUM_FENCES];
563 u32 savePCH_PORT_HOTPLUG;
567 struct vlv_s0ix_state {
574 u32 lra_limits[GEN7_LRA_LIMITS_REG_NUM];
575 u32 media_max_req_count;
576 u32 gfx_max_req_count;
608 /* Display 1 CZ domain */
613 u32 gt_scratch[GEN7_GT_SCRATCH_REG_NUM];
615 /* GT SA CZ domain */
622 /* Display 2 CZ domain */
629 struct intel_rps_ei {
637 * work, interrupts_enabled and pm_iir are protected by
640 struct work_struct work;
641 bool interrupts_enabled;
644 /* PM interrupt bits that should never be masked */
647 /* Frequencies are stored in potentially platform dependent multiples.
648 * In other words, *_freq needs to be multiplied by X to be interesting.
649 * Soft limits are those which are used for the dynamic reclocking done
650 * by the driver (raise frequencies under heavy loads, and lower for
651 * lighter loads). Hard limits are those imposed by the hardware.
653 * A distinction is made for overclocking, which is never enabled by
654 * default, and is considered to be above the hard limit if it's
657 u8 cur_freq; /* Current frequency (cached, may not == HW) */
658 u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
659 u8 max_freq_softlimit; /* Max frequency permitted by the driver */
660 u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
661 u8 min_freq; /* AKA RPn. Minimum frequency */
662 u8 boost_freq; /* Frequency to request when wait boosting */
663 u8 idle_freq; /* Frequency to request when we are idle */
664 u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
665 u8 rp1_freq; /* "less than" RP0 power/freqency */
666 u8 rp0_freq; /* Non-overclocked max frequency. */
667 u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
674 enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
675 unsigned int interactive;
677 u8 up_threshold; /* Current %busy required to uplock */
678 u8 down_threshold; /* Current %busy required to downclock */
682 atomic_t num_waiters;
685 /* manual wa residency calculations */
686 struct intel_rps_ei ei;
691 u64 prev_hw_residency[4];
692 u64 cur_residency[4];
695 struct intel_llc_pstate {
699 struct intel_gen6_power_mgmt {
700 struct intel_rps rps;
701 struct intel_rc6 rc6;
702 struct intel_llc_pstate llc_pstate;
705 /* defined intel_pm.c */
706 extern spinlock_t mchdev_lock;
708 struct intel_ilk_power_mgmt {
716 unsigned long last_time1;
717 unsigned long chipset_power;
720 unsigned long gfx_power;
727 struct drm_i915_private;
728 struct i915_power_well;
730 struct i915_power_well_ops {
732 * Synchronize the well's hw state to match the current sw state, for
733 * example enable/disable it based on the current refcount. Called
734 * during driver init and resume time, possibly after first calling
735 * the enable/disable handlers.
737 void (*sync_hw)(struct drm_i915_private *dev_priv,
738 struct i915_power_well *power_well);
740 * Enable the well and resources that depend on it (for example
741 * interrupts located on the well). Called after the 0->1 refcount
744 void (*enable)(struct drm_i915_private *dev_priv,
745 struct i915_power_well *power_well);
747 * Disable the well and resources that depend on it. Called after
748 * the 1->0 refcount transition.
750 void (*disable)(struct drm_i915_private *dev_priv,
751 struct i915_power_well *power_well);
752 /* Returns the hw enabled state. */
753 bool (*is_enabled)(struct drm_i915_private *dev_priv,
754 struct i915_power_well *power_well);
757 struct i915_power_well_regs {
764 /* Power well structure for haswell */
765 struct i915_power_well_desc {
769 /* unique identifier for this power well */
770 enum i915_power_well_id id;
772 * Arbitraty data associated with this power well. Platform and power
778 * request/status flag index in the PUNIT power well
779 * control/status registers.
787 const struct i915_power_well_regs *regs;
789 * request/status flag index in the power well
790 * constrol/status registers.
793 /* Mask of pipes whose IRQ logic is backed by the pw */
795 /* The pw is backing the VGA functionality */
799 * The pw is for an ICL+ TypeC PHY port in
805 const struct i915_power_well_ops *ops;
808 struct i915_power_well {
809 const struct i915_power_well_desc *desc;
810 /* power well enable/disable usage count */
812 /* cached hw enabled state */
816 struct i915_power_domains {
818 * Power wells needed for initialization at driver init and suspend
819 * time are on. They are kept on until after the first modeset.
822 bool display_core_suspended;
823 int power_well_count;
825 intel_wakeref_t wakeref;
828 int domain_use_count[POWER_DOMAIN_NUM];
829 struct i915_power_well *power_wells;
832 #define MAX_L3_SLICES 2
833 struct intel_l3_parity {
834 u32 *remap_info[MAX_L3_SLICES];
835 struct work_struct error_work;
840 /** Memory allocator for GTT stolen memory */
841 struct drm_mm stolen;
842 /** Protects the usage of the GTT stolen memory allocator. This is
843 * always the inner lock when overlapping with struct_mutex. */
844 struct mutex stolen_lock;
846 /* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
849 /** List of all objects in gtt_space. Used to restore gtt
850 * mappings on resume */
851 struct list_head bound_list;
853 * List of objects which are not bound to the GTT (thus
854 * are idle and not used by the GPU). These objects may or may
855 * not actually have any pages attached.
857 struct list_head unbound_list;
859 /** List of all objects in gtt_space, currently mmaped by userspace.
860 * All objects within this list must also be on bound_list.
862 struct list_head userfault_list;
865 * List of objects which are pending destruction.
867 struct llist_head free_list;
868 struct work_struct free_work;
869 spinlock_t free_lock;
871 * Count of objects pending destructions. Used to skip needlessly
872 * waiting on an RCU barrier if no objects are waiting to be freed.
877 * Small stash of WC pages
879 struct pagestash wc_stash;
882 * tmpfs instance used for shmem backed objects
884 struct vfsmount *gemfs;
886 /** PPGTT used for aliasing the PPGTT with the GTT */
887 struct i915_hw_ppgtt *aliasing_ppgtt;
889 struct notifier_block oom_notifier;
890 struct notifier_block vmap_notifier;
891 struct shrinker shrinker;
893 /** LRU list of objects with fence regs on them. */
894 struct list_head fence_list;
897 * Workqueue to fault in userptr pages, flushed by the execbuf
898 * when required but otherwise left to userspace to try again
901 struct workqueue_struct *userptr_wq;
903 u64 unordered_timeline;
905 /* the indicator for dispatch video commands on two BSD rings */
906 atomic_t bsd_engine_dispatch_index;
908 /** Bit 6 swizzling required for X tiling */
910 /** Bit 6 swizzling required for Y tiling */
913 /* accounting, useful for userland debugging */
914 spinlock_t object_stat_lock;
919 #define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
921 #define I915_RESET_TIMEOUT (10 * HZ) /* 10s */
922 #define I915_FENCE_TIMEOUT (10 * HZ) /* 10s */
924 #define I915_ENGINE_DEAD_TIMEOUT (4 * HZ) /* Seqno, head and subunits dead */
925 #define I915_SEQNO_DEAD_TIMEOUT (12 * HZ) /* Seqno dead with active head */
927 #define I915_ENGINE_WEDGED_TIMEOUT (60 * HZ) /* Reset but no recovery? */
929 struct ddi_vbt_port_info {
933 * This is an index in the HDMI/DVI DDI buffer translation table.
934 * The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
935 * populate this field.
937 #define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
944 u8 supports_typec_usb:1;
947 u8 alternate_aux_channel;
948 u8 alternate_ddc_pin;
952 int dp_max_link_rate; /* 0 for not limited by VBT */
955 enum psr_lines_to_wait {
956 PSR_0_LINES_TO_WAIT = 0,
962 struct intel_vbt_data {
963 struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
964 struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
967 unsigned int int_tv_support:1;
968 unsigned int lvds_dither:1;
969 unsigned int int_crt_support:1;
970 unsigned int lvds_use_ssc:1;
971 unsigned int int_lvds_support:1;
972 unsigned int display_clock_mode:1;
973 unsigned int fdi_rx_polarity_inverted:1;
974 unsigned int panel_type:4;
976 unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
977 enum drm_panel_orientation orientation;
979 enum drrs_support_type drrs_type;
989 struct edp_power_seq pps;
995 bool require_aux_wakeup;
997 enum psr_lines_to_wait lines_to_wait;
998 int tp1_wakeup_time_us;
999 int tp2_tp3_wakeup_time_us;
1005 bool active_low_pwm;
1006 u8 min_brightness; /* min_brightness/255 of max */
1007 u8 controller; /* brightness controller number */
1008 enum intel_backlight_type type;
1014 struct mipi_config *config;
1015 struct mipi_pps_data *pps;
1021 const u8 *sequence[MIPI_SEQ_MAX];
1022 u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
1023 enum drm_panel_orientation orientation;
1029 struct child_device_config *child_dev;
1031 struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
1032 struct sdvo_device_mapping sdvo_mappings[2];
1035 enum intel_ddb_partitioning {
1037 INTEL_DDB_PART_5_6, /* IVB+ */
1040 struct intel_wm_level {
1048 struct ilk_wm_values {
1054 enum intel_ddb_partitioning partitioning;
1057 struct g4x_pipe_wm {
1058 u16 plane[I915_MAX_PLANES];
1068 struct vlv_wm_ddl_values {
1069 u8 plane[I915_MAX_PLANES];
1072 struct vlv_wm_values {
1073 struct g4x_pipe_wm pipe[3];
1074 struct g4x_sr_wm sr;
1075 struct vlv_wm_ddl_values ddl[3];
1080 struct g4x_wm_values {
1081 struct g4x_pipe_wm pipe[2];
1082 struct g4x_sr_wm sr;
1083 struct g4x_sr_wm hpll;
1089 struct skl_ddb_entry {
1090 u16 start, end; /* in number of blocks, 'end' is exclusive */
1093 static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
1095 return entry->end - entry->start;
1098 static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
1099 const struct skl_ddb_entry *e2)
1101 if (e1->start == e2->start && e1->end == e2->end)
1107 struct skl_ddb_allocation {
1108 u8 enabled_slices; /* GEN11 has configurable 2 slices */
1111 struct skl_ddb_values {
1112 unsigned dirty_pipes;
1113 struct skl_ddb_allocation ddb;
1116 struct skl_wm_level {
1122 /* Stores plane specific WM parameters */
1123 struct skl_wm_params {
1124 bool x_tiled, y_tiled;
1129 u32 plane_pixel_rate;
1130 u32 y_min_scanlines;
1131 u32 plane_bytes_per_line;
1132 uint_fixed_16_16_t plane_blocks_per_line;
1133 uint_fixed_16_16_t y_tile_minimum;
1135 u32 dbuf_block_size;
1139 * This struct helps tracking the state needed for runtime PM, which puts the
1140 * device in PCI D3 state. Notice that when this happens, nothing on the
1141 * graphics device works, even register access, so we don't get interrupts nor
1144 * Every piece of our code that needs to actually touch the hardware needs to
1145 * either call intel_runtime_pm_get or call intel_display_power_get with the
1146 * appropriate power domain.
1148 * Our driver uses the autosuspend delay feature, which means we'll only really
1149 * suspend if we stay with zero refcount for a certain amount of time. The
1150 * default value is currently very conservative (see intel_runtime_pm_enable), but
1151 * it can be changed with the standard runtime PM files from sysfs.
1153 * The irqs_disabled variable becomes true exactly after we disable the IRQs and
1154 * goes back to false exactly before we reenable the IRQs. We use this variable
1155 * to check if someone is trying to enable/disable IRQs while they're supposed
1156 * to be disabled. This shouldn't happen and we'll print some error messages in
1159 * For more, read the Documentation/power/runtime_pm.txt.
1161 struct i915_runtime_pm {
1162 atomic_t wakeref_count;
1166 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
1168 * To aide detection of wakeref leaks and general misuse, we
1169 * track all wakeref holders. With manual markup (i.e. returning
1170 * a cookie to each rpm_get caller which they then supply to their
1171 * paired rpm_put) we can remove corresponding pairs of and keep
1172 * the array trimmed to active wakerefs.
1174 struct intel_runtime_pm_debug {
1177 depot_stack_handle_t last_acquire;
1178 depot_stack_handle_t last_release;
1180 depot_stack_handle_t *owners;
1181 unsigned long count;
1186 enum intel_pipe_crc_source {
1187 INTEL_PIPE_CRC_SOURCE_NONE,
1188 INTEL_PIPE_CRC_SOURCE_PLANE1,
1189 INTEL_PIPE_CRC_SOURCE_PLANE2,
1190 INTEL_PIPE_CRC_SOURCE_PF,
1191 INTEL_PIPE_CRC_SOURCE_PIPE,
1192 /* TV/DP on pre-gen5/vlv can't use the pipe source. */
1193 INTEL_PIPE_CRC_SOURCE_TV,
1194 INTEL_PIPE_CRC_SOURCE_DP_B,
1195 INTEL_PIPE_CRC_SOURCE_DP_C,
1196 INTEL_PIPE_CRC_SOURCE_DP_D,
1197 INTEL_PIPE_CRC_SOURCE_AUTO,
1198 INTEL_PIPE_CRC_SOURCE_MAX,
1201 #define INTEL_PIPE_CRC_ENTRIES_NR 128
1202 struct intel_pipe_crc {
1205 enum intel_pipe_crc_source source;
1208 struct i915_frontbuffer_tracking {
1212 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
1219 struct i915_virtual_gpu {
1224 /* used in computing the new watermarks state */
1225 struct intel_wm_config {
1226 unsigned int num_pipes_active;
1227 bool sprites_enabled;
1228 bool sprites_scaled;
1231 struct i915_oa_format {
1236 struct i915_oa_reg {
1241 struct i915_oa_config {
1242 char uuid[UUID_STRING_LEN + 1];
1245 const struct i915_oa_reg *mux_regs;
1247 const struct i915_oa_reg *b_counter_regs;
1248 u32 b_counter_regs_len;
1249 const struct i915_oa_reg *flex_regs;
1252 struct attribute_group sysfs_metric;
1253 struct attribute *attrs[2];
1254 struct device_attribute sysfs_metric_id;
1259 struct i915_perf_stream;
1262 * struct i915_perf_stream_ops - the OPs to support a specific stream type
1264 struct i915_perf_stream_ops {
1266 * @enable: Enables the collection of HW samples, either in response to
1267 * `I915_PERF_IOCTL_ENABLE` or implicitly called when stream is opened
1268 * without `I915_PERF_FLAG_DISABLED`.
1270 void (*enable)(struct i915_perf_stream *stream);
1273 * @disable: Disables the collection of HW samples, either in response
1274 * to `I915_PERF_IOCTL_DISABLE` or implicitly called before destroying
1277 void (*disable)(struct i915_perf_stream *stream);
1280 * @poll_wait: Call poll_wait, passing a wait queue that will be woken
1281 * once there is something ready to read() for the stream
1283 void (*poll_wait)(struct i915_perf_stream *stream,
1288 * @wait_unlocked: For handling a blocking read, wait until there is
1289 * something to ready to read() for the stream. E.g. wait on the same
1290 * wait queue that would be passed to poll_wait().
1292 int (*wait_unlocked)(struct i915_perf_stream *stream);
1295 * @read: Copy buffered metrics as records to userspace
1296 * **buf**: the userspace, destination buffer
1297 * **count**: the number of bytes to copy, requested by userspace
1298 * **offset**: zero at the start of the read, updated as the read
1299 * proceeds, it represents how many bytes have been copied so far and
1300 * the buffer offset for copying the next record.
1302 * Copy as many buffered i915 perf samples and records for this stream
1303 * to userspace as will fit in the given buffer.
1305 * Only write complete records; returning -%ENOSPC if there isn't room
1306 * for a complete record.
1308 * Return any error condition that results in a short read such as
1309 * -%ENOSPC or -%EFAULT, even though these may be squashed before
1310 * returning to userspace.
1312 int (*read)(struct i915_perf_stream *stream,
1318 * @destroy: Cleanup any stream specific resources.
1320 * The stream will always be disabled before this is called.
1322 void (*destroy)(struct i915_perf_stream *stream);
1326 * struct i915_perf_stream - state for a single open stream FD
1328 struct i915_perf_stream {
1330 * @dev_priv: i915 drm device
1332 struct drm_i915_private *dev_priv;
1335 * @link: Links the stream into ``&drm_i915_private->streams``
1337 struct list_head link;
1340 * @wakeref: As we keep the device awake while the perf stream is
1341 * active, we track our runtime pm reference for later release.
1343 intel_wakeref_t wakeref;
1346 * @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
1347 * properties given when opening a stream, representing the contents
1348 * of a single sample as read() by userspace.
1353 * @sample_size: Considering the configured contents of a sample
1354 * combined with the required header size, this is the total size
1355 * of a single sample record.
1360 * @ctx: %NULL if measuring system-wide across all contexts or a
1361 * specific context that is being monitored.
1363 struct i915_gem_context *ctx;
1366 * @enabled: Whether the stream is currently enabled, considering
1367 * whether the stream was opened in a disabled state and based
1368 * on `I915_PERF_IOCTL_ENABLE` and `I915_PERF_IOCTL_DISABLE` calls.
1373 * @ops: The callbacks providing the implementation of this specific
1374 * type of configured stream.
1376 const struct i915_perf_stream_ops *ops;
1379 * @oa_config: The OA configuration used by the stream.
1381 struct i915_oa_config *oa_config;
1385 * struct i915_oa_ops - Gen specific implementation of an OA unit stream
1387 struct i915_oa_ops {
1389 * @is_valid_b_counter_reg: Validates register's address for
1390 * programming boolean counters for a particular platform.
1392 bool (*is_valid_b_counter_reg)(struct drm_i915_private *dev_priv,
1396 * @is_valid_mux_reg: Validates register's address for programming mux
1397 * for a particular platform.
1399 bool (*is_valid_mux_reg)(struct drm_i915_private *dev_priv, u32 addr);
1402 * @is_valid_flex_reg: Validates register's address for programming
1403 * flex EU filtering for a particular platform.
1405 bool (*is_valid_flex_reg)(struct drm_i915_private *dev_priv, u32 addr);
1408 * @enable_metric_set: Selects and applies any MUX configuration to set
1409 * up the Boolean and Custom (B/C) counters that are part of the
1410 * counter reports being sampled. May apply system constraints such as
1411 * disabling EU clock gating as required.
1413 int (*enable_metric_set)(struct i915_perf_stream *stream);
1416 * @disable_metric_set: Remove system constraints associated with using
1419 void (*disable_metric_set)(struct drm_i915_private *dev_priv);
1422 * @oa_enable: Enable periodic sampling
1424 void (*oa_enable)(struct i915_perf_stream *stream);
1427 * @oa_disable: Disable periodic sampling
1429 void (*oa_disable)(struct i915_perf_stream *stream);
1432 * @read: Copy data from the circular OA buffer into a given userspace
1435 int (*read)(struct i915_perf_stream *stream,
1441 * @oa_hw_tail_read: read the OA tail pointer register
1443 * In particular this enables us to share all the fiddly code for
1444 * handling the OA unit tail pointer race that affects multiple
1447 u32 (*oa_hw_tail_read)(struct drm_i915_private *dev_priv);
1450 struct intel_cdclk_state {
1451 unsigned int cdclk, vco, ref, bypass;
1455 struct drm_i915_private {
1456 struct drm_device drm;
1458 struct kmem_cache *objects;
1459 struct kmem_cache *vmas;
1460 struct kmem_cache *luts;
1461 struct kmem_cache *requests;
1462 struct kmem_cache *dependencies;
1463 struct kmem_cache *priorities;
1465 const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
1466 struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
1467 struct intel_driver_caps caps;
1470 * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
1471 * end of stolen which we can optionally use to create GEM objects
1472 * backed by stolen memory. Note that stolen_usable_size tells us
1473 * exactly how much of this we are actually allowed to use, given that
1474 * some portion of it is in fact reserved for use by hardware functions.
1476 struct resource dsm;
1478 * Reseved portion of Data Stolen Memory
1480 struct resource dsm_reserved;
1483 * Stolen memory is segmented in hardware with different portions
1484 * offlimits to certain functions.
1486 * The drm_mm is initialised to the total accessible range, as found
1487 * from the PCI config. On Broadwell+, this is further restricted to
1488 * avoid the first page! The upper end of stolen memory is reserved for
1489 * hardware functions and similarly removed from the accessible range.
1491 resource_size_t stolen_usable_size; /* Total size minus reserved ranges */
1495 struct intel_uncore uncore;
1497 struct i915_virtual_gpu vgpu;
1499 struct intel_gvt *gvt;
1501 struct intel_wopcm wopcm;
1503 struct intel_huc huc;
1504 struct intel_guc guc;
1506 struct intel_csr csr;
1508 struct intel_gmbus gmbus[GMBUS_NUM_PINS];
1510 /** gmbus_mutex protects against concurrent usage of the single hw gmbus
1511 * controller on different i2c buses. */
1512 struct mutex gmbus_mutex;
1515 * Base address of where the gmbus and gpio blocks are located (either
1516 * on PCH or on SoC for platforms without PCH).
1520 /* MMIO base address for MIPI regs */
1527 wait_queue_head_t gmbus_wait_queue;
1529 struct pci_dev *bridge_dev;
1530 struct intel_engine_cs *engine[I915_NUM_ENGINES];
1531 /* Context used internally to idle the GPU and setup initial state */
1532 struct i915_gem_context *kernel_context;
1533 /* Context only to be used for injecting preemption commands */
1534 struct i915_gem_context *preempt_context;
1535 struct intel_engine_cs *engine_class[MAX_ENGINE_CLASS + 1]
1536 [MAX_ENGINE_INSTANCE + 1];
1538 struct resource mch_res;
1540 /* protects the irq masks */
1541 spinlock_t irq_lock;
1543 bool display_irqs_enabled;
1545 /* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
1546 struct pm_qos_request pm_qos;
1548 /* Sideband mailbox protection */
1549 struct mutex sb_lock;
1551 /** Cached value of IMR to avoid reads in updating the bitfield */
1554 u32 de_irq_mask[I915_MAX_PIPES];
1561 u32 pipestat_irq_mask[I915_MAX_PIPES];
1563 struct i915_hotplug hotplug;
1564 struct intel_fbc fbc;
1565 struct i915_drrs drrs;
1566 struct intel_opregion opregion;
1567 struct intel_vbt_data vbt;
1569 bool preserve_bios_swizzle;
1572 struct intel_overlay *overlay;
1574 /* backlight registers and fields in struct intel_panel */
1575 struct mutex backlight_lock;
1578 bool no_aux_handshake;
1580 /* protects panel power sequencer state */
1581 struct mutex pps_mutex;
1583 struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
1584 int num_fence_regs; /* 8 on pre-965, 16 otherwise */
1586 unsigned int fsb_freq, mem_freq, is_ddr3;
1587 unsigned int skl_preferred_vco_freq;
1588 unsigned int max_cdclk_freq;
1590 unsigned int max_dotclk_freq;
1591 unsigned int rawclk_freq;
1592 unsigned int hpll_freq;
1593 unsigned int fdi_pll_freq;
1594 unsigned int czclk_freq;
1598 * The current logical cdclk state.
1599 * See intel_atomic_state.cdclk.logical
1601 * For reading holding any crtc lock is sufficient,
1602 * for writing must hold all of them.
1604 struct intel_cdclk_state logical;
1606 * The current actual cdclk state.
1607 * See intel_atomic_state.cdclk.actual
1609 struct intel_cdclk_state actual;
1610 /* The current hardware cdclk state */
1611 struct intel_cdclk_state hw;
1615 * wq - Driver workqueue for GEM.
1617 * NOTE: Work items scheduled here are not allowed to grab any modeset
1618 * locks, for otherwise the flushing done in the pageflip code will
1619 * result in deadlocks.
1621 struct workqueue_struct *wq;
1623 /* ordered wq for modesets */
1624 struct workqueue_struct *modeset_wq;
1626 /* Display functions */
1627 struct drm_i915_display_funcs display;
1629 /* PCH chipset type */
1630 enum intel_pch pch_type;
1631 unsigned short pch_id;
1633 unsigned long quirks;
1635 struct drm_atomic_state *modeset_restore_state;
1636 struct drm_modeset_acquire_ctx reset_ctx;
1638 struct i915_ggtt ggtt; /* VM representing the global address space */
1640 struct i915_gem_mm mm;
1641 DECLARE_HASHTABLE(mm_structs, 7);
1642 struct mutex mm_lock;
1644 struct intel_ppat ppat;
1646 /* Kernel Modesetting */
1648 struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
1649 struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
1651 #ifdef CONFIG_DEBUG_FS
1652 struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
1655 /* dpll and cdclk state is protected by connection_mutex */
1656 int num_shared_dpll;
1657 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
1658 const struct intel_dpll_mgr *dpll_mgr;
1661 * dpll_lock serializes intel_{prepare,enable,disable}_shared_dpll.
1662 * Must be global rather than per dpll, because on some platforms
1663 * plls share registers.
1665 struct mutex dpll_lock;
1667 unsigned int active_crtcs;
1668 /* minimum acceptable cdclk for each pipe */
1669 int min_cdclk[I915_MAX_PIPES];
1670 /* minimum acceptable voltage level for each pipe */
1671 u8 min_voltage_level[I915_MAX_PIPES];
1673 int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
1675 struct i915_wa_list gt_wa_list;
1677 struct i915_frontbuffer_tracking fb_tracking;
1679 struct intel_atomic_helper {
1680 struct llist_head free_list;
1681 struct work_struct free_work;
1686 bool mchbar_need_disable;
1688 struct intel_l3_parity l3_parity;
1690 /* Cannot be determined by PCIID. You must always read a register. */
1694 * Protects RPS/RC6 register access and PCU communication.
1695 * Must be taken after struct_mutex if nested. Note that
1696 * this lock may be held for long periods of time when
1697 * talking to hw - so only take it when talking to hw!
1699 struct mutex pcu_lock;
1701 /* gen6+ GT PM state */
1702 struct intel_gen6_power_mgmt gt_pm;
1704 /* ilk-only ips/rps state. Everything in here is protected by the global
1705 * mchdev_lock in intel_pm.c */
1706 struct intel_ilk_power_mgmt ips;
1708 struct i915_power_domains power_domains;
1710 struct i915_psr psr;
1712 struct i915_gpu_error gpu_error;
1714 struct drm_i915_gem_object *vlv_pctx;
1716 /* list of fbdev register on this device */
1717 struct intel_fbdev *fbdev;
1718 struct work_struct fbdev_suspend_work;
1720 struct drm_property *broadcast_rgb_property;
1721 struct drm_property *force_audio_property;
1723 /* hda/i915 audio component */
1724 struct i915_audio_component *audio_component;
1725 bool audio_component_registered;
1727 * av_mutex - mutex for audio/video sync
1730 struct mutex av_mutex;
1734 struct list_head list;
1735 struct llist_head free_list;
1736 struct work_struct free_work;
1738 /* The hw wants to have a stable context identifier for the
1739 * lifetime of the context (for OA, PASID, faults, etc).
1740 * This is limited in execlists to 21 bits.
1743 #define MAX_CONTEXT_HW_ID (1<<21) /* exclusive */
1744 #define MAX_GUC_CONTEXT_HW_ID (1 << 20) /* exclusive */
1745 #define GEN11_MAX_CONTEXT_HW_ID (1<<11) /* exclusive */
1746 struct list_head hw_id_list;
1751 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
1752 u32 chv_phy_control;
1754 * Shadows for CHV DPLL_MD regs to keep the state
1755 * checker somewhat working in the presence hardware
1756 * crappiness (can't read out DPLL_MD for pipes B & C).
1758 u32 chv_dpll_md[I915_MAX_PIPES];
1762 bool power_domains_suspended;
1763 struct i915_suspend_saved_registers regfile;
1764 struct vlv_s0ix_state vlv_s0ix_state;
1767 I915_SAGV_UNKNOWN = 0,
1770 I915_SAGV_NOT_CONTROLLED
1775 * Raw watermark latency values:
1776 * in 0.1us units for WM0,
1777 * in 0.5us units for WM1+.
1786 * Raw watermark memory latency values
1787 * for SKL for all 8 levels
1792 /* current hardware state */
1794 struct ilk_wm_values hw;
1795 struct skl_ddb_values skl_hw;
1796 struct vlv_wm_values vlv;
1797 struct g4x_wm_values g4x;
1803 * Should be held around atomic WM register writing; also
1804 * protects * intel_crtc->wm.active and
1805 * cstate->wm.need_postvbl_update.
1807 struct mutex wm_mutex;
1810 * Set during HW readout of watermarks/DDB. Some platforms
1811 * need to know when we're still using BIOS-provided values
1812 * (which we don't fully trust).
1814 bool distrust_bios_wm;
1822 I915_DRAM_RANK_INVALID = 0,
1823 I915_DRAM_RANK_SINGLE,
1827 bool symmetric_memory;
1830 struct i915_runtime_pm runtime_pm;
1835 struct kobject *metrics_kobj;
1836 struct ctl_table_header *sysctl_header;
1839 * Lock associated with adding/modifying/removing OA configs
1840 * in dev_priv->perf.metrics_idr.
1842 struct mutex metrics_lock;
1845 * List of dynamic configurations, you need to hold
1846 * dev_priv->perf.metrics_lock to access it.
1848 struct idr metrics_idr;
1851 * Lock associated with anything below within this structure
1852 * except exclusive_stream.
1855 struct list_head streams;
1859 * The stream currently using the OA unit. If accessed
1860 * outside a syscall associated to its file
1861 * descriptor, you need to hold
1862 * dev_priv->drm.struct_mutex.
1864 struct i915_perf_stream *exclusive_stream;
1866 struct intel_context *pinned_ctx;
1867 u32 specific_ctx_id;
1868 u32 specific_ctx_id_mask;
1870 struct hrtimer poll_check_timer;
1871 wait_queue_head_t poll_wq;
1875 * For rate limiting any notifications of spurious
1876 * invalid OA reports
1878 struct ratelimit_state spurious_report_rs;
1881 int period_exponent;
1883 struct i915_oa_config test_config;
1886 struct i915_vma *vma;
1893 * Locks reads and writes to all head/tail state
1895 * Consider: the head and tail pointer state
1896 * needs to be read consistently from a hrtimer
1897 * callback (atomic context) and read() fop
1898 * (user context) with tail pointer updates
1899 * happening in atomic context and head updates
1900 * in user context and the (unlikely)
1901 * possibility of read() errors needing to
1902 * reset all head/tail state.
1904 * Note: Contention or performance aren't
1905 * currently a significant concern here
1906 * considering the relatively low frequency of
1907 * hrtimer callbacks (5ms period) and that
1908 * reads typically only happen in response to a
1909 * hrtimer event and likely complete before the
1912 * Note: This lock is not held *while* reading
1913 * and copying data to userspace so the value
1914 * of head observed in htrimer callbacks won't
1915 * represent any partial consumption of data.
1917 spinlock_t ptr_lock;
1920 * One 'aging' tail pointer and one 'aged'
1921 * tail pointer ready to used for reading.
1923 * Initial values of 0xffffffff are invalid
1924 * and imply that an update is required
1925 * (and should be ignored by an attempted
1933 * Index for the aged tail ready to read()
1936 unsigned int aged_tail_idx;
1939 * A monotonic timestamp for when the current
1940 * aging tail pointer was read; used to
1941 * determine when it is old enough to trust.
1943 u64 aging_timestamp;
1946 * Although we can always read back the head
1947 * pointer register, we prefer to avoid
1948 * trusting the HW state, just to avoid any
1949 * risk that some hardware condition could
1950 * somehow bump the head pointer unpredictably
1951 * and cause us to forward the wrong OA buffer
1952 * data to userspace.
1957 u32 gen7_latched_oastatus1;
1958 u32 ctx_oactxctrl_offset;
1959 u32 ctx_flexeu0_offset;
1962 * The RPT_ID/reason field for Gen8+ includes a bit
1963 * to determine if the CTX ID in the report is valid
1964 * but the specific bit differs between Gen 8 and 9
1966 u32 gen8_valid_ctx_bit;
1968 struct i915_oa_ops ops;
1969 const struct i915_oa_format *oa_formats;
1973 /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
1975 void (*resume)(struct drm_i915_private *);
1976 void (*cleanup_engine)(struct intel_engine_cs *engine);
1978 struct list_head timelines;
1980 struct list_head active_rings;
1981 struct list_head closed_vma;
1982 u32 active_requests;
1985 * Is the GPU currently considered idle, or busy executing
1986 * userspace requests? Whilst idle, we allow runtime power
1987 * management to power down the hardware and display clocks.
1988 * In order to reduce the effect on performance, there
1989 * is a slight delay before we do so.
1991 intel_wakeref_t awake;
1994 * The number of times we have woken up.
1997 #define I915_EPOCH_INVALID 0
2000 * We leave the user IRQ off as much as possible,
2001 * but this means that requests will finish and never
2002 * be retired once the system goes idle. Set a timer to
2003 * fire periodically while the ring is running. When it
2004 * fires, go retire requests.
2006 struct delayed_work retire_work;
2009 * When we detect an idle GPU, we want to turn on
2010 * powersaving features. So once we see that there
2011 * are no more requests outstanding and no more
2012 * arrive within a small period of time, we fire
2013 * off the idle_work.
2015 struct delayed_work idle_work;
2017 ktime_t last_init_time;
2019 struct i915_vma *scratch;
2022 /* perform PHY state sanity checks? */
2023 bool chv_phy_assert[2];
2027 /* Used to save the pipe-to-encoder mapping for audio */
2028 struct intel_encoder *av_enc_map[I915_MAX_PIPES];
2030 /* necessary resource sharing with HDMI LPE audio driver. */
2032 struct platform_device *platdev;
2036 struct i915_pmu pmu;
2039 * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
2040 * will be rejected. Instead look for a better place.
2044 struct dram_channel_info {
2047 enum dram_rank rank;
2049 enum dram_rank rank;
2053 static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
2055 return container_of(dev, struct drm_i915_private, drm);
2058 static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
2060 return to_i915(dev_get_drvdata(kdev));
2063 static inline struct drm_i915_private *wopcm_to_i915(struct intel_wopcm *wopcm)
2065 return container_of(wopcm, struct drm_i915_private, wopcm);
2068 static inline struct drm_i915_private *guc_to_i915(struct intel_guc *guc)
2070 return container_of(guc, struct drm_i915_private, guc);
2073 static inline struct drm_i915_private *huc_to_i915(struct intel_huc *huc)
2075 return container_of(huc, struct drm_i915_private, huc);
2078 /* Simple iterator over all initialised engines */
2079 #define for_each_engine(engine__, dev_priv__, id__) \
2081 (id__) < I915_NUM_ENGINES; \
2083 for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
2085 /* Iterator over subset of engines selected by mask */
2086 #define for_each_engine_masked(engine__, dev_priv__, mask__, tmp__) \
2087 for ((tmp__) = (mask__) & INTEL_INFO(dev_priv__)->ring_mask; \
2089 ((engine__) = (dev_priv__)->engine[__mask_next_bit(tmp__)]), 1 : \
2092 enum hdmi_force_audio {
2093 HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
2094 HDMI_AUDIO_OFF, /* force turn off HDMI audio */
2095 HDMI_AUDIO_AUTO, /* trust EDID */
2096 HDMI_AUDIO_ON, /* force turn on HDMI audio */
2099 #define I915_GTT_OFFSET_NONE ((u32)-1)
2102 * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
2103 * considered to be the frontbuffer for the given plane interface-wise. This
2104 * doesn't mean that the hw necessarily already scans it out, but that any
2105 * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
2107 * We have one bit per pipe and per scanout plane type.
2109 #define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
2110 #define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
2111 BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
2112 BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
2113 BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
2115 #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
2116 BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
2117 #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
2118 GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
2119 INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
2122 * Optimised SGL iterator for GEM objects
2124 static __always_inline struct sgt_iter {
2125 struct scatterlist *sgp;
2132 } __sgt_iter(struct scatterlist *sgl, bool dma) {
2133 struct sgt_iter s = { .sgp = sgl };
2136 s.max = s.curr = s.sgp->offset;
2137 s.max += s.sgp->length;
2139 s.dma = sg_dma_address(s.sgp);
2141 s.pfn = page_to_pfn(sg_page(s.sgp));
2147 static inline struct scatterlist *____sg_next(struct scatterlist *sg)
2150 if (unlikely(sg_is_chain(sg)))
2151 sg = sg_chain_ptr(sg);
2156 * __sg_next - return the next scatterlist entry in a list
2157 * @sg: The current sg entry
2160 * If the entry is the last, return NULL; otherwise, step to the next
2161 * element in the array (@sg@+1). If that's a chain pointer, follow it;
2162 * otherwise just return the pointer to the current element.
2164 static inline struct scatterlist *__sg_next(struct scatterlist *sg)
2166 return sg_is_last(sg) ? NULL : ____sg_next(sg);
2170 * for_each_sgt_dma - iterate over the DMA addresses of the given sg_table
2171 * @__dmap: DMA address (output)
2172 * @__iter: 'struct sgt_iter' (iterator state, internal)
2173 * @__sgt: sg_table to iterate over (input)
2175 #define for_each_sgt_dma(__dmap, __iter, __sgt) \
2176 for ((__iter) = __sgt_iter((__sgt)->sgl, true); \
2177 ((__dmap) = (__iter).dma + (__iter).curr); \
2178 (((__iter).curr += I915_GTT_PAGE_SIZE) >= (__iter).max) ? \
2179 (__iter) = __sgt_iter(__sg_next((__iter).sgp), true), 0 : 0)
2182 * for_each_sgt_page - iterate over the pages of the given sg_table
2183 * @__pp: page pointer (output)
2184 * @__iter: 'struct sgt_iter' (iterator state, internal)
2185 * @__sgt: sg_table to iterate over (input)
2187 #define for_each_sgt_page(__pp, __iter, __sgt) \
2188 for ((__iter) = __sgt_iter((__sgt)->sgl, false); \
2189 ((__pp) = (__iter).pfn == 0 ? NULL : \
2190 pfn_to_page((__iter).pfn + ((__iter).curr >> PAGE_SHIFT))); \
2191 (((__iter).curr += PAGE_SIZE) >= (__iter).max) ? \
2192 (__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0 : 0)
2194 bool i915_sg_trim(struct sg_table *orig_st);
2196 static inline unsigned int i915_sg_page_sizes(struct scatterlist *sg)
2198 unsigned int page_sizes;
2202 GEM_BUG_ON(sg->offset);
2203 GEM_BUG_ON(!IS_ALIGNED(sg->length, PAGE_SIZE));
2204 page_sizes |= sg->length;
2211 static inline unsigned int i915_sg_segment_size(void)
2213 unsigned int size = swiotlb_max_segment();
2216 return SCATTERLIST_MAX_SEGMENT;
2218 size = rounddown(size, PAGE_SIZE);
2219 /* swiotlb_max_segment_size can return 1 byte when it means one page. */
2220 if (size < PAGE_SIZE)
2226 #define INTEL_INFO(dev_priv) (&(dev_priv)->__info)
2227 #define RUNTIME_INFO(dev_priv) (&(dev_priv)->__runtime)
2228 #define DRIVER_CAPS(dev_priv) (&(dev_priv)->caps)
2230 #define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
2231 #define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
2233 #define REVID_FOREVER 0xff
2234 #define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
2236 #define INTEL_GEN_MASK(s, e) ( \
2237 BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
2238 BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
2239 GENMASK((e) - 1, (s) - 1))
2241 /* Returns true if Gen is in inclusive range [Start, End] */
2242 #define IS_GEN_RANGE(dev_priv, s, e) \
2243 (!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
2245 #define IS_GEN(dev_priv, n) \
2246 (BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
2247 INTEL_INFO(dev_priv)->gen == (n))
2250 * Return true if revision is in range [since,until] inclusive.
2252 * Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
2254 #define IS_REVID(p, since, until) \
2255 (INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
2257 #define IS_PLATFORM(dev_priv, p) (INTEL_INFO(dev_priv)->platform_mask & BIT(p))
2259 #define IS_I830(dev_priv) IS_PLATFORM(dev_priv, INTEL_I830)
2260 #define IS_I845G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I845G)
2261 #define IS_I85X(dev_priv) IS_PLATFORM(dev_priv, INTEL_I85X)
2262 #define IS_I865G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I865G)
2263 #define IS_I915G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915G)
2264 #define IS_I915GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915GM)
2265 #define IS_I945G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945G)
2266 #define IS_I945GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945GM)
2267 #define IS_I965G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965G)
2268 #define IS_I965GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965GM)
2269 #define IS_G45(dev_priv) IS_PLATFORM(dev_priv, INTEL_G45)
2270 #define IS_GM45(dev_priv) IS_PLATFORM(dev_priv, INTEL_GM45)
2271 #define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
2272 #define IS_PINEVIEW_G(dev_priv) (INTEL_DEVID(dev_priv) == 0xa001)
2273 #define IS_PINEVIEW_M(dev_priv) (INTEL_DEVID(dev_priv) == 0xa011)
2274 #define IS_PINEVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
2275 #define IS_G33(dev_priv) IS_PLATFORM(dev_priv, INTEL_G33)
2276 #define IS_IRONLAKE_M(dev_priv) (INTEL_DEVID(dev_priv) == 0x0046)
2277 #define IS_IVYBRIDGE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
2278 #define IS_IVB_GT1(dev_priv) (IS_IVYBRIDGE(dev_priv) && \
2279 INTEL_INFO(dev_priv)->gt == 1)
2280 #define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
2281 #define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
2282 #define IS_HASWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_HASWELL)
2283 #define IS_BROADWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROADWELL)
2284 #define IS_SKYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
2285 #define IS_BROXTON(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROXTON)
2286 #define IS_KABYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
2287 #define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
2288 #define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
2289 #define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
2290 #define IS_ICELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ICELAKE)
2291 #define IS_MOBILE(dev_priv) (INTEL_INFO(dev_priv)->is_mobile)
2292 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
2293 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
2294 #define IS_BDW_ULT(dev_priv) (IS_BROADWELL(dev_priv) && \
2295 ((INTEL_DEVID(dev_priv) & 0xf) == 0x6 || \
2296 (INTEL_DEVID(dev_priv) & 0xf) == 0xb || \
2297 (INTEL_DEVID(dev_priv) & 0xf) == 0xe))
2298 /* ULX machines are also considered ULT. */
2299 #define IS_BDW_ULX(dev_priv) (IS_BROADWELL(dev_priv) && \
2300 (INTEL_DEVID(dev_priv) & 0xf) == 0xe)
2301 #define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
2302 INTEL_INFO(dev_priv)->gt == 3)
2303 #define IS_HSW_ULT(dev_priv) (IS_HASWELL(dev_priv) && \
2304 (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0A00)
2305 #define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
2306 INTEL_INFO(dev_priv)->gt == 3)
2307 #define IS_HSW_GT1(dev_priv) (IS_HASWELL(dev_priv) && \
2308 INTEL_INFO(dev_priv)->gt == 1)
2309 /* ULX machines are also considered ULT. */
2310 #define IS_HSW_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x0A0E || \
2311 INTEL_DEVID(dev_priv) == 0x0A1E)
2312 #define IS_SKL_ULT(dev_priv) (INTEL_DEVID(dev_priv) == 0x1906 || \
2313 INTEL_DEVID(dev_priv) == 0x1913 || \
2314 INTEL_DEVID(dev_priv) == 0x1916 || \
2315 INTEL_DEVID(dev_priv) == 0x1921 || \
2316 INTEL_DEVID(dev_priv) == 0x1926)
2317 #define IS_SKL_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x190E || \
2318 INTEL_DEVID(dev_priv) == 0x1915 || \
2319 INTEL_DEVID(dev_priv) == 0x191E)
2320 #define IS_KBL_ULT(dev_priv) (INTEL_DEVID(dev_priv) == 0x5906 || \
2321 INTEL_DEVID(dev_priv) == 0x5913 || \
2322 INTEL_DEVID(dev_priv) == 0x5916 || \
2323 INTEL_DEVID(dev_priv) == 0x5921 || \
2324 INTEL_DEVID(dev_priv) == 0x5926)
2325 #define IS_KBL_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x590E || \
2326 INTEL_DEVID(dev_priv) == 0x5915 || \
2327 INTEL_DEVID(dev_priv) == 0x591E)
2328 #define IS_AML_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x591C || \
2329 INTEL_DEVID(dev_priv) == 0x87C0)
2330 #define IS_SKL_GT2(dev_priv) (IS_SKYLAKE(dev_priv) && \
2331 INTEL_INFO(dev_priv)->gt == 2)
2332 #define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
2333 INTEL_INFO(dev_priv)->gt == 3)
2334 #define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
2335 INTEL_INFO(dev_priv)->gt == 4)
2336 #define IS_KBL_GT2(dev_priv) (IS_KABYLAKE(dev_priv) && \
2337 INTEL_INFO(dev_priv)->gt == 2)
2338 #define IS_KBL_GT3(dev_priv) (IS_KABYLAKE(dev_priv) && \
2339 INTEL_INFO(dev_priv)->gt == 3)
2340 #define IS_CFL_ULT(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2341 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x00A0)
2342 #define IS_CFL_GT2(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2343 INTEL_INFO(dev_priv)->gt == 2)
2344 #define IS_CFL_GT3(dev_priv) (IS_COFFEELAKE(dev_priv) && \
2345 INTEL_INFO(dev_priv)->gt == 3)
2346 #define IS_CNL_WITH_PORT_F(dev_priv) (IS_CANNONLAKE(dev_priv) && \
2347 (INTEL_DEVID(dev_priv) & 0x0004) == 0x0004)
2349 #define IS_ALPHA_SUPPORT(intel_info) ((intel_info)->is_alpha_support)
2351 #define SKL_REVID_A0 0x0
2352 #define SKL_REVID_B0 0x1
2353 #define SKL_REVID_C0 0x2
2354 #define SKL_REVID_D0 0x3
2355 #define SKL_REVID_E0 0x4
2356 #define SKL_REVID_F0 0x5
2357 #define SKL_REVID_G0 0x6
2358 #define SKL_REVID_H0 0x7
2360 #define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
2362 #define BXT_REVID_A0 0x0
2363 #define BXT_REVID_A1 0x1
2364 #define BXT_REVID_B0 0x3
2365 #define BXT_REVID_B_LAST 0x8
2366 #define BXT_REVID_C0 0x9
2368 #define IS_BXT_REVID(dev_priv, since, until) \
2369 (IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
2371 #define KBL_REVID_A0 0x0
2372 #define KBL_REVID_B0 0x1
2373 #define KBL_REVID_C0 0x2
2374 #define KBL_REVID_D0 0x3
2375 #define KBL_REVID_E0 0x4
2377 #define IS_KBL_REVID(dev_priv, since, until) \
2378 (IS_KABYLAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2380 #define GLK_REVID_A0 0x0
2381 #define GLK_REVID_A1 0x1
2383 #define IS_GLK_REVID(dev_priv, since, until) \
2384 (IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
2386 #define CNL_REVID_A0 0x0
2387 #define CNL_REVID_B0 0x1
2388 #define CNL_REVID_C0 0x2
2390 #define IS_CNL_REVID(p, since, until) \
2391 (IS_CANNONLAKE(p) && IS_REVID(p, since, until))
2393 #define ICL_REVID_A0 0x0
2394 #define ICL_REVID_A2 0x1
2395 #define ICL_REVID_B0 0x3
2396 #define ICL_REVID_B2 0x4
2397 #define ICL_REVID_C0 0x5
2399 #define IS_ICL_REVID(p, since, until) \
2400 (IS_ICELAKE(p) && IS_REVID(p, since, until))
2402 #define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
2403 #define IS_GEN9_LP(dev_priv) (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
2404 #define IS_GEN9_BC(dev_priv) (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
2406 #define ENGINE_MASK(id) BIT(id)
2407 #define RENDER_RING ENGINE_MASK(RCS)
2408 #define BSD_RING ENGINE_MASK(VCS)
2409 #define BLT_RING ENGINE_MASK(BCS)
2410 #define VEBOX_RING ENGINE_MASK(VECS)
2411 #define BSD2_RING ENGINE_MASK(VCS2)
2412 #define BSD3_RING ENGINE_MASK(VCS3)
2413 #define BSD4_RING ENGINE_MASK(VCS4)
2414 #define VEBOX2_RING ENGINE_MASK(VECS2)
2415 #define ALL_ENGINES (~0)
2417 #define HAS_ENGINE(dev_priv, id) \
2418 (!!(INTEL_INFO(dev_priv)->ring_mask & ENGINE_MASK(id)))
2420 #define HAS_BSD(dev_priv) HAS_ENGINE(dev_priv, VCS)
2421 #define HAS_BSD2(dev_priv) HAS_ENGINE(dev_priv, VCS2)
2422 #define HAS_BLT(dev_priv) HAS_ENGINE(dev_priv, BCS)
2423 #define HAS_VEBOX(dev_priv) HAS_ENGINE(dev_priv, VECS)
2425 #define HAS_LLC(dev_priv) (INTEL_INFO(dev_priv)->has_llc)
2426 #define HAS_SNOOP(dev_priv) (INTEL_INFO(dev_priv)->has_snoop)
2427 #define HAS_EDRAM(dev_priv) (!!((dev_priv)->edram_cap & EDRAM_ENABLED))
2428 #define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
2429 IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
2431 #define HWS_NEEDS_PHYSICAL(dev_priv) (INTEL_INFO(dev_priv)->hws_needs_physical)
2433 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
2434 (INTEL_INFO(dev_priv)->has_logical_ring_contexts)
2435 #define HAS_LOGICAL_RING_ELSQ(dev_priv) \
2436 (INTEL_INFO(dev_priv)->has_logical_ring_elsq)
2437 #define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
2438 (INTEL_INFO(dev_priv)->has_logical_ring_preemption)
2440 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
2442 #define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt)
2443 #define HAS_PPGTT(dev_priv) \
2444 (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
2445 #define HAS_FULL_PPGTT(dev_priv) \
2446 (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
2447 #define HAS_FULL_48BIT_PPGTT(dev_priv) \
2448 (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL_4LVL)
2450 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
2451 GEM_BUG_ON((sizes) == 0); \
2452 ((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
2455 #define HAS_OVERLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_overlay)
2456 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
2457 (INTEL_INFO(dev_priv)->display.overlay_needs_physical)
2459 /* Early gen2 have a totally busted CS tlb and require pinned batches. */
2460 #define HAS_BROKEN_CS_TLB(dev_priv) (IS_I830(dev_priv) || IS_I845G(dev_priv))
2462 /* WaRsDisableCoarsePowerGating:skl,cnl */
2463 #define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
2464 (IS_CANNONLAKE(dev_priv) || \
2465 IS_SKL_GT3(dev_priv) || IS_SKL_GT4(dev_priv))
2467 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
2468 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
2469 IS_GEMINILAKE(dev_priv) || \
2470 IS_KABYLAKE(dev_priv))
2472 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
2473 * rows, which changed the alignment requirements and fence programming.
2475 #define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
2476 !(IS_I915G(dev_priv) || \
2477 IS_I915GM(dev_priv)))
2478 #define SUPPORTS_TV(dev_priv) (INTEL_INFO(dev_priv)->display.supports_tv)
2479 #define I915_HAS_HOTPLUG(dev_priv) (INTEL_INFO(dev_priv)->display.has_hotplug)
2481 #define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
2482 #define HAS_FBC(dev_priv) (INTEL_INFO(dev_priv)->display.has_fbc)
2483 #define HAS_CUR_FBC(dev_priv) (!HAS_GMCH_DISPLAY(dev_priv) && INTEL_GEN(dev_priv) >= 7)
2485 #define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
2487 #define HAS_DP_MST(dev_priv) (INTEL_INFO(dev_priv)->display.has_dp_mst)
2489 #define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
2490 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
2491 #define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
2493 #define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)
2494 #define HAS_RC6p(dev_priv) (INTEL_INFO(dev_priv)->has_rc6p)
2495 #define HAS_RC6pp(dev_priv) (false) /* HW was never validated */
2497 #define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
2499 #define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
2500 #define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
2502 #define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
2505 * For now, anything with a GuC requires uCode loading, and then supports
2506 * command submission once loaded. But these are logically independent
2507 * properties, so we have separate macros to test them.
2509 #define HAS_GUC(dev_priv) (INTEL_INFO(dev_priv)->has_guc)
2510 #define HAS_GUC_CT(dev_priv) (INTEL_INFO(dev_priv)->has_guc_ct)
2511 #define HAS_GUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
2512 #define HAS_GUC_SCHED(dev_priv) (HAS_GUC(dev_priv))
2514 /* For now, anything with a GuC has also HuC */
2515 #define HAS_HUC(dev_priv) (HAS_GUC(dev_priv))
2516 #define HAS_HUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
2518 /* Having a GuC is not the same as using a GuC */
2519 #define USES_GUC(dev_priv) intel_uc_is_using_guc(dev_priv)
2520 #define USES_GUC_SUBMISSION(dev_priv) intel_uc_is_using_guc_submission(dev_priv)
2521 #define USES_HUC(dev_priv) intel_uc_is_using_huc(dev_priv)
2523 #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
2525 #define INTEL_PCH_DEVICE_ID_MASK 0xff80
2526 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
2527 #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
2528 #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
2529 #define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
2530 #define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
2531 #define INTEL_PCH_WPT_DEVICE_ID_TYPE 0x8c80
2532 #define INTEL_PCH_WPT_LP_DEVICE_ID_TYPE 0x9c80
2533 #define INTEL_PCH_SPT_DEVICE_ID_TYPE 0xA100
2534 #define INTEL_PCH_SPT_LP_DEVICE_ID_TYPE 0x9D00
2535 #define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA280
2536 #define INTEL_PCH_CNP_DEVICE_ID_TYPE 0xA300
2537 #define INTEL_PCH_CNP_LP_DEVICE_ID_TYPE 0x9D80
2538 #define INTEL_PCH_ICP_DEVICE_ID_TYPE 0x3480
2539 #define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
2540 #define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
2541 #define INTEL_PCH_QEMU_DEVICE_ID_TYPE 0x2900 /* qemu q35 has 2918 */
2543 #define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
2544 #define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
2545 #define HAS_PCH_ICP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_ICP)
2546 #define HAS_PCH_CNP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CNP)
2547 #define HAS_PCH_CNP_LP(dev_priv) \
2548 (INTEL_PCH_ID(dev_priv) == INTEL_PCH_CNP_LP_DEVICE_ID_TYPE)
2549 #define HAS_PCH_KBP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_KBP)
2550 #define HAS_PCH_SPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_SPT)
2551 #define HAS_PCH_LPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_LPT)
2552 #define HAS_PCH_LPT_LP(dev_priv) \
2553 (INTEL_PCH_ID(dev_priv) == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE || \
2554 INTEL_PCH_ID(dev_priv) == INTEL_PCH_WPT_LP_DEVICE_ID_TYPE)
2555 #define HAS_PCH_LPT_H(dev_priv) \
2556 (INTEL_PCH_ID(dev_priv) == INTEL_PCH_LPT_DEVICE_ID_TYPE || \
2557 INTEL_PCH_ID(dev_priv) == INTEL_PCH_WPT_DEVICE_ID_TYPE)
2558 #define HAS_PCH_CPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CPT)
2559 #define HAS_PCH_IBX(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_IBX)
2560 #define HAS_PCH_NOP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_NOP)
2561 #define HAS_PCH_SPLIT(dev_priv) (INTEL_PCH_TYPE(dev_priv) != PCH_NONE)
2563 #define HAS_GMCH_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch_display)
2565 #define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
2567 /* DPF == dynamic parity feature */
2568 #define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
2569 #define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
2570 2 : HAS_L3_DPF(dev_priv))
2572 #define GT_FREQUENCY_MULTIPLIER 50
2573 #define GEN9_FREQ_SCALER 3
2575 #define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->num_pipes > 0)
2577 #include "i915_trace.h"
2579 static inline bool intel_vtd_active(void)
2581 #ifdef CONFIG_INTEL_IOMMU
2582 if (intel_iommu_gfx_mapped)
2588 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
2590 return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
2594 intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
2596 return IS_BROXTON(dev_priv) && intel_vtd_active();
2601 __i915_printk(struct drm_i915_private *dev_priv, const char *level,
2602 const char *fmt, ...);
2604 #define i915_report_error(dev_priv, fmt, ...) \
2605 __i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__)
2607 #ifdef CONFIG_COMPAT
2608 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
2611 #define i915_compat_ioctl NULL
2613 extern const struct dev_pm_ops i915_pm_ops;
2615 extern int i915_driver_load(struct pci_dev *pdev,
2616 const struct pci_device_id *ent);
2617 extern void i915_driver_unload(struct drm_device *dev);
2619 extern void intel_engine_init_hangcheck(struct intel_engine_cs *engine);
2620 extern void intel_hangcheck_init(struct drm_i915_private *dev_priv);
2621 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
2622 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
2623 extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
2624 extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
2625 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
2627 int intel_engines_init_mmio(struct drm_i915_private *dev_priv);
2628 int intel_engines_init(struct drm_i915_private *dev_priv);
2630 u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv);
2632 /* intel_hotplug.c */
2633 void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
2634 u32 pin_mask, u32 long_mask);
2635 void intel_hpd_init(struct drm_i915_private *dev_priv);
2636 void intel_hpd_init_work(struct drm_i915_private *dev_priv);
2637 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv);
2638 enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
2640 bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
2641 void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
2644 static inline void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
2646 unsigned long delay;
2648 if (unlikely(!i915_modparams.enable_hangcheck))
2651 /* Don't continually defer the hangcheck so that it is always run at
2652 * least once after work has been scheduled on any ring. Otherwise,
2653 * we will ignore a hung ring if a second ring is kept busy.
2656 delay = round_jiffies_up_relative(DRM_I915_HANGCHECK_JIFFIES);
2657 queue_delayed_work(system_long_wq,
2658 &dev_priv->gpu_error.hangcheck_work, delay);
2661 extern void intel_irq_init(struct drm_i915_private *dev_priv);
2662 extern void intel_irq_fini(struct drm_i915_private *dev_priv);
2663 int intel_irq_install(struct drm_i915_private *dev_priv);
2664 void intel_irq_uninstall(struct drm_i915_private *dev_priv);
2666 static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
2668 return dev_priv->gvt;
2671 static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
2673 return dev_priv->vgpu.active;
2676 u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
2679 i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2683 i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
2686 void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
2687 void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
2688 void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
2691 void ilk_update_display_irq(struct drm_i915_private *dev_priv,
2693 u32 enabled_irq_mask);
2695 ilk_enable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
2697 ilk_update_display_irq(dev_priv, bits, bits);
2700 ilk_disable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
2702 ilk_update_display_irq(dev_priv, bits, 0);
2704 void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
2707 u32 enabled_irq_mask);
2708 static inline void bdw_enable_pipe_irq(struct drm_i915_private *dev_priv,
2709 enum pipe pipe, u32 bits)
2711 bdw_update_pipe_irq(dev_priv, pipe, bits, bits);
2713 static inline void bdw_disable_pipe_irq(struct drm_i915_private *dev_priv,
2714 enum pipe pipe, u32 bits)
2716 bdw_update_pipe_irq(dev_priv, pipe, bits, 0);
2718 void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
2720 u32 enabled_irq_mask);
2722 ibx_enable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
2724 ibx_display_interrupt_update(dev_priv, bits, bits);
2727 ibx_disable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
2729 ibx_display_interrupt_update(dev_priv, bits, 0);
2733 int i915_gem_create_ioctl(struct drm_device *dev, void *data,
2734 struct drm_file *file_priv);
2735 int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
2736 struct drm_file *file_priv);
2737 int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
2738 struct drm_file *file_priv);
2739 int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
2740 struct drm_file *file_priv);
2741 int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
2742 struct drm_file *file_priv);
2743 int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
2744 struct drm_file *file_priv);
2745 int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
2746 struct drm_file *file_priv);
2747 int i915_gem_execbuffer_ioctl(struct drm_device *dev, void *data,
2748 struct drm_file *file_priv);
2749 int i915_gem_execbuffer2_ioctl(struct drm_device *dev, void *data,
2750 struct drm_file *file_priv);
2751 int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
2752 struct drm_file *file_priv);
2753 int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
2754 struct drm_file *file);
2755 int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
2756 struct drm_file *file);
2757 int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
2758 struct drm_file *file_priv);
2759 int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
2760 struct drm_file *file_priv);
2761 int i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
2762 struct drm_file *file_priv);
2763 int i915_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
2764 struct drm_file *file_priv);
2765 int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
2766 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
2767 int i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
2768 struct drm_file *file);
2769 int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
2770 struct drm_file *file_priv);
2771 int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
2772 struct drm_file *file_priv);
2773 void i915_gem_sanitize(struct drm_i915_private *i915);
2774 int i915_gem_init_early(struct drm_i915_private *dev_priv);
2775 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
2776 void i915_gem_load_init_fences(struct drm_i915_private *dev_priv);
2777 int i915_gem_freeze(struct drm_i915_private *dev_priv);
2778 int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
2780 void *i915_gem_object_alloc(struct drm_i915_private *dev_priv);
2781 void i915_gem_object_free(struct drm_i915_gem_object *obj);
2782 void i915_gem_object_init(struct drm_i915_gem_object *obj,
2783 const struct drm_i915_gem_object_ops *ops);
2784 struct drm_i915_gem_object *
2785 i915_gem_object_create(struct drm_i915_private *dev_priv, u64 size);
2786 struct drm_i915_gem_object *
2787 i915_gem_object_create_from_data(struct drm_i915_private *dev_priv,
2788 const void *data, size_t size);
2789 void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file);
2790 void i915_gem_free_object(struct drm_gem_object *obj);
2792 static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
2794 if (!atomic_read(&i915->mm.free_count))
2797 /* A single pass should suffice to release all the freed objects (along
2798 * most call paths) , but be a little more paranoid in that freeing
2799 * the objects does take a little amount of time, during which the rcu
2800 * callbacks could have added new objects into the freed list, and
2801 * armed the work again.
2805 } while (flush_work(&i915->mm.free_work));
2808 static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
2811 * Similar to objects above (see i915_gem_drain_freed-objects), in
2812 * general we have workers that are armed by RCU and then rearm
2813 * themselves in their callbacks. To be paranoid, we need to
2814 * drain the workqueue a second time after waiting for the RCU
2815 * grace period so that we catch work queued via RCU from the first
2816 * pass. As neither drain_workqueue() nor flush_workqueue() report
2817 * a result, we make an assumption that we only don't require more
2818 * than 2 passes to catch all recursive RCU delayed work.
2824 drain_workqueue(i915->wq);
2828 struct i915_vma * __must_check
2829 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
2830 const struct i915_ggtt_view *view,
2835 int i915_gem_object_unbind(struct drm_i915_gem_object *obj);
2836 void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
2838 void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
2840 static inline int __sg_page_count(const struct scatterlist *sg)
2842 return sg->length >> PAGE_SHIFT;
2845 struct scatterlist *
2846 i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
2847 unsigned int n, unsigned int *offset);
2850 i915_gem_object_get_page(struct drm_i915_gem_object *obj,
2854 i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj,
2858 i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
2861 void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
2862 struct sg_table *pages,
2863 unsigned int sg_page_sizes);
2864 int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
2866 static inline int __must_check
2867 i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2869 might_lock(&obj->mm.lock);
2871 if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
2874 return __i915_gem_object_get_pages(obj);
2878 i915_gem_object_has_pages(struct drm_i915_gem_object *obj)
2880 return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages));
2884 __i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
2886 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
2888 atomic_inc(&obj->mm.pages_pin_count);
2892 i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
2894 return atomic_read(&obj->mm.pages_pin_count);
2898 __i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
2900 GEM_BUG_ON(!i915_gem_object_has_pages(obj));
2901 GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
2903 atomic_dec(&obj->mm.pages_pin_count);
2907 i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
2909 __i915_gem_object_unpin_pages(obj);
2912 enum i915_mm_subclass { /* lockdep subclass for obj->mm.lock/struct_mutex */
2914 I915_MM_SHRINKER /* called "recursively" from direct-reclaim-esque */
2917 int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj,
2918 enum i915_mm_subclass subclass);
2919 void __i915_gem_object_invalidate(struct drm_i915_gem_object *obj);
2921 enum i915_map_type {
2924 #define I915_MAP_OVERRIDE BIT(31)
2925 I915_MAP_FORCE_WB = I915_MAP_WB | I915_MAP_OVERRIDE,
2926 I915_MAP_FORCE_WC = I915_MAP_WC | I915_MAP_OVERRIDE,
2929 static inline enum i915_map_type
2930 i915_coherent_map_type(struct drm_i915_private *i915)
2932 return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
2936 * i915_gem_object_pin_map - return a contiguous mapping of the entire object
2937 * @obj: the object to map into kernel address space
2938 * @type: the type of mapping, used to select pgprot_t
2940 * Calls i915_gem_object_pin_pages() to prevent reaping of the object's
2941 * pages and then returns a contiguous mapping of the backing storage into
2942 * the kernel address space. Based on the @type of mapping, the PTE will be
2943 * set to either WriteBack or WriteCombine (via pgprot_t).
2945 * The caller is responsible for calling i915_gem_object_unpin_map() when the
2946 * mapping is no longer required.
2948 * Returns the pointer through which to access the mapped object, or an
2949 * ERR_PTR() on error.
2951 void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
2952 enum i915_map_type type);
2955 * i915_gem_object_unpin_map - releases an earlier mapping
2956 * @obj: the object to unmap
2958 * After pinning the object and mapping its pages, once you are finished
2959 * with your access, call i915_gem_object_unpin_map() to release the pin
2960 * upon the mapping. Once the pin count reaches zero, that mapping may be
2963 static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
2965 i915_gem_object_unpin_pages(obj);
2968 int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
2969 unsigned int *needs_clflush);
2970 int i915_gem_obj_prepare_shmem_write(struct drm_i915_gem_object *obj,
2971 unsigned int *needs_clflush);
2972 #define CLFLUSH_BEFORE BIT(0)
2973 #define CLFLUSH_AFTER BIT(1)
2974 #define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER)
2977 i915_gem_obj_finish_shmem_access(struct drm_i915_gem_object *obj)
2979 i915_gem_object_unpin_pages(obj);
2982 int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
2983 int i915_gem_dumb_create(struct drm_file *file_priv,
2984 struct drm_device *dev,
2985 struct drm_mode_create_dumb *args);
2986 int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
2987 u32 handle, u64 *offset);
2988 int i915_gem_mmap_gtt_version(void);
2990 void i915_gem_track_fb(struct drm_i915_gem_object *old,
2991 struct drm_i915_gem_object *new,
2992 unsigned frontbuffer_bits);
2994 int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
2996 struct i915_request *
2997 i915_gem_find_active_request(struct intel_engine_cs *engine);
2999 static inline bool i915_reset_backoff(struct i915_gpu_error *error)
3001 return unlikely(test_bit(I915_RESET_BACKOFF, &error->flags));
3004 static inline bool i915_reset_handoff(struct i915_gpu_error *error)
3006 return unlikely(test_bit(I915_RESET_HANDOFF, &error->flags));
3009 static inline bool i915_terminally_wedged(struct i915_gpu_error *error)
3011 return unlikely(test_bit(I915_WEDGED, &error->flags));
3014 static inline bool i915_reset_backoff_or_wedged(struct i915_gpu_error *error)
3016 return i915_reset_backoff(error) | i915_terminally_wedged(error);
3019 static inline u32 i915_reset_count(struct i915_gpu_error *error)
3021 return READ_ONCE(error->reset_count);
3024 static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
3025 struct intel_engine_cs *engine)
3027 return READ_ONCE(error->reset_engine_count[engine->id]);
3030 void i915_gem_set_wedged(struct drm_i915_private *dev_priv);
3031 bool i915_gem_unset_wedged(struct drm_i915_private *dev_priv);
3033 void i915_gem_init_mmio(struct drm_i915_private *i915);
3034 int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
3035 int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv);
3036 void i915_gem_init_swizzling(struct drm_i915_private *dev_priv);
3037 void i915_gem_fini(struct drm_i915_private *dev_priv);
3038 void i915_gem_cleanup_engines(struct drm_i915_private *dev_priv);
3039 int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
3040 unsigned int flags, long timeout);
3041 int __must_check i915_gem_suspend(struct drm_i915_private *dev_priv);
3042 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
3043 void i915_gem_resume(struct drm_i915_private *dev_priv);
3044 vm_fault_t i915_gem_fault(struct vm_fault *vmf);
3045 int i915_gem_object_wait(struct drm_i915_gem_object *obj,
3048 struct intel_rps_client *rps);
3049 int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
3051 const struct i915_sched_attr *attr);
3052 #define I915_PRIORITY_DISPLAY I915_USER_PRIORITY(I915_PRIORITY_MAX)
3055 i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
3057 i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write);
3059 i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
3060 struct i915_vma * __must_check
3061 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
3063 const struct i915_ggtt_view *view,
3064 unsigned int flags);
3065 void i915_gem_object_unpin_from_display_plane(struct i915_vma *vma);
3066 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
3068 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
3069 void i915_gem_release(struct drm_device *dev, struct drm_file *file);
3071 int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
3072 enum i915_cache_level cache_level);
3074 struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
3075 struct dma_buf *dma_buf);
3077 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
3078 struct drm_gem_object *gem_obj, int flags);
3080 static inline struct i915_hw_ppgtt *
3081 i915_vm_to_ppgtt(struct i915_address_space *vm)
3083 return container_of(vm, struct i915_hw_ppgtt, vm);
3086 /* i915_gem_fence_reg.c */
3087 struct drm_i915_fence_reg *
3088 i915_reserve_fence(struct drm_i915_private *dev_priv);
3089 void i915_unreserve_fence(struct drm_i915_fence_reg *fence);
3091 void i915_gem_revoke_fences(struct drm_i915_private *dev_priv);
3092 void i915_gem_restore_fences(struct drm_i915_private *dev_priv);
3094 void i915_gem_detect_bit_6_swizzle(struct drm_i915_private *dev_priv);
3095 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj,
3096 struct sg_table *pages);
3097 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj,
3098 struct sg_table *pages);
3100 static inline struct i915_gem_context *
3101 __i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
3103 return idr_find(&file_priv->context_idr, id);
3106 static inline struct i915_gem_context *
3107 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
3109 struct i915_gem_context *ctx;
3112 ctx = __i915_gem_context_lookup_rcu(file_priv, id);
3113 if (ctx && !kref_get_unless_zero(&ctx->ref))
3120 int i915_perf_open_ioctl(struct drm_device *dev, void *data,
3121 struct drm_file *file);
3122 int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
3123 struct drm_file *file);
3124 int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
3125 struct drm_file *file);
3126 void i915_oa_init_reg_state(struct intel_engine_cs *engine,
3127 struct i915_gem_context *ctx,
3130 /* i915_gem_evict.c */
3131 int __must_check i915_gem_evict_something(struct i915_address_space *vm,
3132 u64 min_size, u64 alignment,
3133 unsigned cache_level,
3136 int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
3137 struct drm_mm_node *node,
3138 unsigned int flags);
3139 int i915_gem_evict_vm(struct i915_address_space *vm);
3141 void i915_gem_flush_ggtt_writes(struct drm_i915_private *dev_priv);
3143 /* belongs in i915_gem_gtt.h */
3144 static inline void i915_gem_chipset_flush(struct drm_i915_private *dev_priv)
3147 if (INTEL_GEN(dev_priv) < 6)
3148 intel_gtt_chipset_flush();
3151 /* i915_gem_stolen.c */
3152 int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv,
3153 struct drm_mm_node *node, u64 size,
3154 unsigned alignment);
3155 int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
3156 struct drm_mm_node *node, u64 size,
3157 unsigned alignment, u64 start,
3159 void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
3160 struct drm_mm_node *node);
3161 int i915_gem_init_stolen(struct drm_i915_private *dev_priv);
3162 void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv);
3163 struct drm_i915_gem_object *
3164 i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
3165 resource_size_t size);
3166 struct drm_i915_gem_object *
3167 i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv,
3168 resource_size_t stolen_offset,
3169 resource_size_t gtt_offset,
3170 resource_size_t size);
3172 /* i915_gem_internal.c */
3173 struct drm_i915_gem_object *
3174 i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
3177 /* i915_gem_shrinker.c */
3178 unsigned long i915_gem_shrink(struct drm_i915_private *i915,
3179 unsigned long target,
3180 unsigned long *nr_scanned,
3182 #define I915_SHRINK_PURGEABLE 0x1
3183 #define I915_SHRINK_UNBOUND 0x2
3184 #define I915_SHRINK_BOUND 0x4
3185 #define I915_SHRINK_ACTIVE 0x8
3186 #define I915_SHRINK_VMAPS 0x10
3187 unsigned long i915_gem_shrink_all(struct drm_i915_private *i915);
3188 void i915_gem_shrinker_register(struct drm_i915_private *i915);
3189 void i915_gem_shrinker_unregister(struct drm_i915_private *i915);
3190 void i915_gem_shrinker_taints_mutex(struct drm_i915_private *i915,
3191 struct mutex *mutex);
3193 /* i915_gem_tiling.c */
3194 static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
3196 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
3198 return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
3199 i915_gem_object_is_tiled(obj);
3202 u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
3203 unsigned int tiling, unsigned int stride);
3204 u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
3205 unsigned int tiling, unsigned int stride);
3207 /* i915_debugfs.c */
3208 #ifdef CONFIG_DEBUG_FS
3209 int i915_debugfs_register(struct drm_i915_private *dev_priv);
3210 int i915_debugfs_connector_add(struct drm_connector *connector);
3211 void intel_display_crc_init(struct drm_i915_private *dev_priv);
3213 static inline int i915_debugfs_register(struct drm_i915_private *dev_priv) {return 0;}
3214 static inline int i915_debugfs_connector_add(struct drm_connector *connector)
3216 static inline void intel_display_crc_init(struct drm_i915_private *dev_priv) {}
3219 const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
3221 /* i915_cmd_parser.c */
3222 int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
3223 void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
3224 void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
3225 int intel_engine_cmd_parser(struct intel_engine_cs *engine,
3226 struct drm_i915_gem_object *batch_obj,
3227 struct drm_i915_gem_object *shadow_batch_obj,
3228 u32 batch_start_offset,
3233 extern void i915_perf_init(struct drm_i915_private *dev_priv);
3234 extern void i915_perf_fini(struct drm_i915_private *dev_priv);
3235 extern void i915_perf_register(struct drm_i915_private *dev_priv);
3236 extern void i915_perf_unregister(struct drm_i915_private *dev_priv);
3238 /* i915_suspend.c */
3239 extern int i915_save_state(struct drm_i915_private *dev_priv);
3240 extern int i915_restore_state(struct drm_i915_private *dev_priv);
3243 void i915_setup_sysfs(struct drm_i915_private *dev_priv);
3244 void i915_teardown_sysfs(struct drm_i915_private *dev_priv);
3246 /* intel_lpe_audio.c */
3247 int intel_lpe_audio_init(struct drm_i915_private *dev_priv);
3248 void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
3249 void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
3250 void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
3251 enum pipe pipe, enum port port,
3252 const void *eld, int ls_clock, bool dp_output);
3255 extern int intel_setup_gmbus(struct drm_i915_private *dev_priv);
3256 extern void intel_teardown_gmbus(struct drm_i915_private *dev_priv);
3257 extern bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
3259 extern int intel_gmbus_output_aksv(struct i2c_adapter *adapter);
3261 extern struct i2c_adapter *
3262 intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
3263 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
3264 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
3265 static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
3267 return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
3269 extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
3272 void intel_bios_init(struct drm_i915_private *dev_priv);
3273 void intel_bios_cleanup(struct drm_i915_private *dev_priv);
3274 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
3275 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
3276 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
3277 bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
3278 bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
3279 bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
3280 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
3281 bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
3283 bool intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv,
3285 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv, enum port port);
3289 extern void intel_register_dsm_handler(void);
3290 extern void intel_unregister_dsm_handler(void);
3292 static inline void intel_register_dsm_handler(void) { return; }
3293 static inline void intel_unregister_dsm_handler(void) { return; }
3294 #endif /* CONFIG_ACPI */
3296 /* intel_device_info.c */
3297 static inline struct intel_device_info *
3298 mkwrite_device_info(struct drm_i915_private *dev_priv)
3300 return (struct intel_device_info *)INTEL_INFO(dev_priv);
3304 extern void intel_modeset_init_hw(struct drm_device *dev);
3305 extern int intel_modeset_init(struct drm_device *dev);
3306 extern void intel_modeset_cleanup(struct drm_device *dev);
3307 extern int intel_modeset_vga_set_state(struct drm_i915_private *dev_priv,
3309 extern void intel_display_resume(struct drm_device *dev);
3310 extern void i915_redisable_vga(struct drm_i915_private *dev_priv);
3311 extern void i915_redisable_vga_power_on(struct drm_i915_private *dev_priv);
3312 extern bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val);
3313 extern void intel_init_pch_refclk(struct drm_i915_private *dev_priv);
3314 extern int intel_set_rps(struct drm_i915_private *dev_priv, u8 val);
3315 extern void intel_rps_mark_interactive(struct drm_i915_private *i915,
3317 extern bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv,
3319 void intel_dsc_enable(struct intel_encoder *encoder,
3320 const struct intel_crtc_state *crtc_state);
3321 void intel_dsc_disable(const struct intel_crtc_state *crtc_state);
3323 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
3324 struct drm_file *file);
3327 extern struct intel_overlay_error_state *
3328 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
3329 extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
3330 struct intel_overlay_error_state *error);
3332 extern struct intel_display_error_state *
3333 intel_display_capture_error_state(struct drm_i915_private *dev_priv);
3334 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
3335 struct intel_display_error_state *error);
3337 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
3338 int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv, u32 mbox,
3339 u32 val, int fast_timeout_us,
3340 int slow_timeout_ms);
3341 #define sandybridge_pcode_write(dev_priv, mbox, val) \
3342 sandybridge_pcode_write_timeout(dev_priv, mbox, val, 500, 0)
3344 int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
3345 u32 reply_mask, u32 reply, int timeout_base_ms);
3347 /* intel_sideband.c */
3348 u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
3349 int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
3350 u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
3351 u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
3352 void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
3353 u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
3354 void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3355 u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
3356 void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3357 u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
3358 void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3359 u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
3360 void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
3361 u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
3362 enum intel_sbi_destination destination);
3363 void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
3364 enum intel_sbi_destination destination);
3365 u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
3366 void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
3368 /* intel_dpio_phy.c */
3369 void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
3370 enum dpio_phy *phy, enum dpio_channel *ch);
3371 void bxt_ddi_phy_set_signal_level(struct drm_i915_private *dev_priv,
3372 enum port port, u32 margin, u32 scale,
3373 u32 enable, u32 deemphasis);
3374 void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
3375 void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
3376 bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
3378 bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
3380 u8 bxt_ddi_phy_calc_lane_lat_optim_mask(u8 lane_count);
3381 void bxt_ddi_phy_set_lane_optim_mask(struct intel_encoder *encoder,
3382 u8 lane_lat_optim_mask);
3383 u8 bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder *encoder);
3385 void chv_set_phy_signal_level(struct intel_encoder *encoder,
3386 u32 deemph_reg_value, u32 margin_reg_value,
3387 bool uniq_trans_scale);
3388 void chv_data_lane_soft_reset(struct intel_encoder *encoder,
3389 const struct intel_crtc_state *crtc_state,
3391 void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
3392 const struct intel_crtc_state *crtc_state);
3393 void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
3394 const struct intel_crtc_state *crtc_state);
3395 void chv_phy_release_cl2_override(struct intel_encoder *encoder);
3396 void chv_phy_post_pll_disable(struct intel_encoder *encoder,
3397 const struct intel_crtc_state *old_crtc_state);
3399 void vlv_set_phy_signal_level(struct intel_encoder *encoder,
3400 u32 demph_reg_value, u32 preemph_reg_value,
3401 u32 uniqtranscale_reg_value, u32 tx3_demph);
3402 void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
3403 const struct intel_crtc_state *crtc_state);
3404 void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
3405 const struct intel_crtc_state *crtc_state);
3406 void vlv_phy_reset_lanes(struct intel_encoder *encoder,
3407 const struct intel_crtc_state *old_crtc_state);
3409 /* intel_combo_phy.c */
3410 void icl_combo_phys_init(struct drm_i915_private *dev_priv);
3411 void icl_combo_phys_uninit(struct drm_i915_private *dev_priv);
3412 void cnl_combo_phys_init(struct drm_i915_private *dev_priv);
3413 void cnl_combo_phys_uninit(struct drm_i915_private *dev_priv);
3415 int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
3416 int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
3417 u64 intel_rc6_residency_ns(struct drm_i915_private *dev_priv,
3418 const i915_reg_t reg);
3420 u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat1);
3422 static inline u64 intel_rc6_residency_us(struct drm_i915_private *dev_priv,
3423 const i915_reg_t reg)
3425 return DIV_ROUND_UP_ULL(intel_rc6_residency_ns(dev_priv, reg), 1000);
3428 #define I915_READ8(reg) dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true)
3429 #define I915_WRITE8(reg, val) dev_priv->uncore.funcs.mmio_writeb(dev_priv, (reg), (val), true)
3431 #define I915_READ16(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), true)
3432 #define I915_WRITE16(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), true)
3433 #define I915_READ16_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), false)
3434 #define I915_WRITE16_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), false)
3436 #define I915_READ(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), true)
3437 #define I915_WRITE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), true)
3438 #define I915_READ_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), false)
3439 #define I915_WRITE_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), false)
3441 /* Be very careful with read/write 64-bit values. On 32-bit machines, they
3442 * will be implemented using 2 32-bit writes in an arbitrary order with
3443 * an arbitrary delay between them. This can cause the hardware to
3444 * act upon the intermediate value, possibly leading to corruption and
3445 * machine death. For this reason we do not support I915_WRITE64, or
3446 * dev_priv->uncore.funcs.mmio_writeq.
3448 * When reading a 64-bit value as two 32-bit values, the delay may cause
3449 * the two reads to mismatch, e.g. a timestamp overflowing. Also note that
3450 * occasionally a 64-bit register does not actualy support a full readq
3451 * and must be read using two 32-bit reads.
3453 * You have been warned.
3455 #define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
3457 #define I915_READ64_2x32(lower_reg, upper_reg) ({ \
3458 u32 upper, lower, old_upper, loop = 0; \
3459 upper = I915_READ(upper_reg); \
3461 old_upper = upper; \
3462 lower = I915_READ(lower_reg); \
3463 upper = I915_READ(upper_reg); \
3464 } while (upper != old_upper && loop++ < 2); \
3465 (u64)upper << 32 | lower; })
3467 #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
3468 #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
3470 #define __raw_read(x, s) \
3471 static inline uint##x##_t __raw_i915_read##x(const struct drm_i915_private *dev_priv, \
3474 return read##s(dev_priv->regs + i915_mmio_reg_offset(reg)); \
3477 #define __raw_write(x, s) \
3478 static inline void __raw_i915_write##x(const struct drm_i915_private *dev_priv, \
3479 i915_reg_t reg, uint##x##_t val) \
3481 write##s(val, dev_priv->regs + i915_mmio_reg_offset(reg)); \
3496 /* These are untraced mmio-accessors that are only valid to be used inside
3497 * critical sections, such as inside IRQ handlers, where forcewake is explicitly
3500 * Think twice, and think again, before using these.
3502 * As an example, these accessors can possibly be used between:
3504 * spin_lock_irq(&dev_priv->uncore.lock);
3505 * intel_uncore_forcewake_get__locked();
3509 * intel_uncore_forcewake_put__locked();
3510 * spin_unlock_irq(&dev_priv->uncore.lock);
3513 * Note: some registers may not need forcewake held, so
3514 * intel_uncore_forcewake_{get,put} can be omitted, see
3515 * intel_uncore_forcewake_for_reg().
3517 * Certain architectures will die if the same cacheline is concurrently accessed
3518 * by different clients (e.g. on Ivybridge). Access to registers should
3519 * therefore generally be serialised, by either the dev_priv->uncore.lock or
3520 * a more localised lock guarding all access to that bank of registers.
3522 #define I915_READ_FW(reg__) __raw_i915_read32(dev_priv, (reg__))
3523 #define I915_WRITE_FW(reg__, val__) __raw_i915_write32(dev_priv, (reg__), (val__))
3524 #define I915_WRITE64_FW(reg__, val__) __raw_i915_write64(dev_priv, (reg__), (val__))
3525 #define POSTING_READ_FW(reg__) (void)I915_READ_FW(reg__)
3527 /* "Broadcast RGB" property */
3528 #define INTEL_BROADCAST_RGB_AUTO 0
3529 #define INTEL_BROADCAST_RGB_FULL 1
3530 #define INTEL_BROADCAST_RGB_LIMITED 2
3532 static inline i915_reg_t i915_vgacntrl_reg(struct drm_i915_private *dev_priv)
3534 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
3535 return VLV_VGACNTRL;
3536 else if (INTEL_GEN(dev_priv) >= 5)
3537 return CPU_VGACNTRL;
3542 static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m)
3544 unsigned long j = msecs_to_jiffies(m);
3546 return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
3549 static inline unsigned long nsecs_to_jiffies_timeout(const u64 n)
3551 /* nsecs_to_jiffies64() does not guard against overflow */
3552 if (NSEC_PER_SEC % HZ &&
3553 div_u64(n, NSEC_PER_SEC) >= MAX_JIFFY_OFFSET / HZ)
3554 return MAX_JIFFY_OFFSET;
3556 return min_t(u64, MAX_JIFFY_OFFSET, nsecs_to_jiffies64(n) + 1);
3560 * If you need to wait X milliseconds between events A and B, but event B
3561 * doesn't happen exactly after event A, you record the timestamp (jiffies) of
3562 * when event A happened, then just before event B you call this function and
3563 * pass the timestamp as the first argument, and X as the second argument.
3566 wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
3568 unsigned long target_jiffies, tmp_jiffies, remaining_jiffies;
3571 * Don't re-read the value of "jiffies" every time since it may change
3572 * behind our back and break the math.
3574 tmp_jiffies = jiffies;
3575 target_jiffies = timestamp_jiffies +
3576 msecs_to_jiffies_timeout(to_wait_ms);
3578 if (time_after(target_jiffies, tmp_jiffies)) {
3579 remaining_jiffies = target_jiffies - tmp_jiffies;
3580 while (remaining_jiffies)
3582 schedule_timeout_uninterruptible(remaining_jiffies);
3586 void i915_memcpy_init_early(struct drm_i915_private *dev_priv);
3587 bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len);
3589 /* The movntdqa instructions used for memcpy-from-wc require 16-byte alignment,
3590 * as well as SSE4.1 support. i915_memcpy_from_wc() will report if it cannot
3591 * perform the operation. To check beforehand, pass in the parameters to
3592 * to i915_can_memcpy_from_wc() - since we only care about the low 4 bits,
3593 * you only need to pass in the minor offsets, page-aligned pointers are
3596 * For just checking for SSE4.1, in the foreknowledge that the future use
3597 * will be correctly aligned, just use i915_has_memcpy_from_wc().
3599 #define i915_can_memcpy_from_wc(dst, src, len) \
3600 i915_memcpy_from_wc((void *)((unsigned long)(dst) | (unsigned long)(src) | (len)), NULL, 0)
3602 #define i915_has_memcpy_from_wc() \
3603 i915_memcpy_from_wc(NULL, NULL, 0)
3606 int remap_io_mapping(struct vm_area_struct *vma,
3607 unsigned long addr, unsigned long pfn, unsigned long size,
3608 struct io_mapping *iomap);
3610 static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
3612 if (INTEL_GEN(i915) >= 10)
3613 return CNL_HWS_CSB_WRITE_INDEX;
3615 return I915_HWS_CSB_WRITE_INDEX;
3618 static inline u32 i915_scratch_offset(const struct drm_i915_private *i915)
3620 return i915_ggtt_offset(i915->gt.scratch);