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|
/* i915_drv.h -- Private header for the I915 driver -*- linux-c -*-
*/
/*
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef _I915_DRV_H_
#define _I915_DRV_H_
#include <uapi/drm/i915_drm.h>
#include <uapi/drm/drm_fourcc.h>
#include <linux/io-mapping.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/backlight.h>
#include <linux/hash.h>
#include <linux/intel-iommu.h>
#include <linux/kref.h>
#include <linux/mm_types.h>
#include <linux/perf_event.h>
#include <linux/pm_qos.h>
#include <linux/dma-resv.h>
#include <linux/shmem_fs.h>
#include <linux/stackdepot.h>
#include <linux/xarray.h>
#include <drm/intel-gtt.h>
#include <drm/drm_legacy.h> /* for struct drm_dma_handle */
#include <drm/drm_gem.h>
#include <drm/drm_auth.h>
#include <drm/drm_cache.h>
#include <drm/drm_util.h>
#include <drm/drm_dsc.h>
#include <drm/drm_atomic.h>
#include <drm/drm_connector.h>
#include <drm/i915_mei_hdcp_interface.h>
#include "i915_params.h"
#include "i915_reg.h"
#include "i915_utils.h"
#include "display/intel_bios.h"
#include "display/intel_display.h"
#include "display/intel_display_power.h"
#include "display/intel_dpll_mgr.h"
#include "display/intel_dsb.h"
#include "display/intel_frontbuffer.h"
#include "display/intel_global_state.h"
#include "display/intel_gmbus.h"
#include "display/intel_opregion.h"
#include "gem/i915_gem_context_types.h"
#include "gem/i915_gem_shrinker.h"
#include "gem/i915_gem_stolen.h"
#include "gt/intel_lrc.h"
#include "gt/intel_engine.h"
#include "gt/intel_gt_types.h"
#include "gt/intel_workarounds.h"
#include "gt/uc/intel_uc.h"
#include "intel_device_info.h"
#include "intel_pch.h"
#include "intel_runtime_pm.h"
#include "intel_memory_region.h"
#include "intel_uncore.h"
#include "intel_wakeref.h"
#include "intel_wopcm.h"
#include "i915_gem.h"
#include "i915_gem_gtt.h"
#include "i915_gpu_error.h"
#include "i915_perf_types.h"
#include "i915_request.h"
#include "i915_scheduler.h"
#include "gt/intel_timeline.h"
#include "i915_vma.h"
#include "i915_irq.h"
#include "intel_region_lmem.h"
/* General customization:
*/
#define DRIVER_NAME "i915"
#define DRIVER_DESC "Intel Graphics"
#define DRIVER_DATE "20200824"
#define DRIVER_TIMESTAMP 1598293597
struct drm_i915_gem_object;
/*
* The code assumes that the hpd_pins below have consecutive values and
* starting with HPD_PORT_A, the HPD pin associated with any port can be
* retrieved by adding the corresponding port (or phy) enum value to
* HPD_PORT_A in most cases. For example:
* HPD_PORT_C = HPD_PORT_A + PHY_C - PHY_A
*/
enum hpd_pin {
HPD_NONE = 0,
HPD_TV = HPD_NONE, /* TV is known to be unreliable */
HPD_CRT,
HPD_SDVO_B,
HPD_SDVO_C,
HPD_PORT_A,
HPD_PORT_B,
HPD_PORT_C,
HPD_PORT_D,
HPD_PORT_E,
HPD_PORT_F,
HPD_PORT_G,
HPD_PORT_H,
HPD_PORT_I,
HPD_NUM_PINS
};
#define for_each_hpd_pin(__pin) \
for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
/* Threshold == 5 for long IRQs, 50 for short */
#define HPD_STORM_DEFAULT_THRESHOLD 50
struct i915_hotplug {
struct delayed_work hotplug_work;
const u32 *hpd, *pch_hpd;
struct {
unsigned long last_jiffies;
int count;
enum {
HPD_ENABLED = 0,
HPD_DISABLED = 1,
HPD_MARK_DISABLED = 2
} state;
} stats[HPD_NUM_PINS];
u32 event_bits;
u32 retry_bits;
struct delayed_work reenable_work;
u32 long_port_mask;
u32 short_port_mask;
struct work_struct dig_port_work;
struct work_struct poll_init_work;
bool poll_enabled;
unsigned int hpd_storm_threshold;
/* Whether or not to count short HPD IRQs in HPD storms */
u8 hpd_short_storm_enabled;
/*
* if we get a HPD irq from DP and a HPD irq from non-DP
* the non-DP HPD could block the workqueue on a mode config
* mutex getting, that userspace may have taken. However
* userspace is waiting on the DP workqueue to run which is
* blocked behind the non-DP one.
*/
struct workqueue_struct *dp_wq;
};
#define I915_GEM_GPU_DOMAINS \
(I915_GEM_DOMAIN_RENDER | \
I915_GEM_DOMAIN_SAMPLER | \
I915_GEM_DOMAIN_COMMAND | \
I915_GEM_DOMAIN_INSTRUCTION | \
I915_GEM_DOMAIN_VERTEX)
struct drm_i915_private;
struct i915_mm_struct;
struct i915_mmu_object;
struct drm_i915_file_private {
struct drm_i915_private *dev_priv;
union {
struct drm_file *file;
struct rcu_head rcu;
};
struct xarray context_xa;
struct xarray vm_xa;
unsigned int bsd_engine;
/*
* Every context ban increments per client ban score. Also
* hangs in short succession increments ban score. If ban threshold
* is reached, client is considered banned and submitting more work
* will fail. This is a stop gap measure to limit the badly behaving
* clients access to gpu. Note that unbannable contexts never increment
* the client ban score.
*/
#define I915_CLIENT_SCORE_HANG_FAST 1
#define I915_CLIENT_FAST_HANG_JIFFIES (60 * HZ)
#define I915_CLIENT_SCORE_CONTEXT_BAN 3
#define I915_CLIENT_SCORE_BANNED 9
/** ban_score: Accumulated score of all ctx bans and fast hangs. */
atomic_t ban_score;
unsigned long hang_timestamp;
};
/* Interface history:
*
* 1.1: Original.
* 1.2: Add Power Management
* 1.3: Add vblank support
* 1.4: Fix cmdbuffer path, add heap destroy
* 1.5: Add vblank pipe configuration
* 1.6: - New ioctl for scheduling buffer swaps on vertical blank
* - Support vertical blank on secondary display pipe
*/
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 6
#define DRIVER_PATCHLEVEL 0
struct intel_overlay;
struct intel_overlay_error_state;
struct sdvo_device_mapping {
u8 initialized;
u8 dvo_port;
u8 slave_addr;
u8 dvo_wiring;
u8 i2c_pin;
u8 ddc_pin;
};
struct intel_connector;
struct intel_encoder;
struct intel_atomic_state;
struct intel_cdclk_config;
struct intel_cdclk_state;
struct intel_cdclk_vals;
struct intel_initial_plane_config;
struct intel_crtc;
struct intel_limit;
struct dpll;
struct drm_i915_display_funcs {
void (*get_cdclk)(struct drm_i915_private *dev_priv,
struct intel_cdclk_config *cdclk_config);
void (*set_cdclk)(struct drm_i915_private *dev_priv,
const struct intel_cdclk_config *cdclk_config,
enum pipe pipe);
int (*bw_calc_min_cdclk)(struct intel_atomic_state *state);
int (*get_fifo_size)(struct drm_i915_private *dev_priv,
enum i9xx_plane_id i9xx_plane);
int (*compute_pipe_wm)(struct intel_crtc_state *crtc_state);
int (*compute_intermediate_wm)(struct intel_crtc_state *crtc_state);
void (*initial_watermarks)(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void (*atomic_update_watermarks)(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void (*optimize_watermarks)(struct intel_atomic_state *state,
struct intel_crtc *crtc);
int (*compute_global_watermarks)(struct intel_atomic_state *state);
void (*update_wm)(struct intel_crtc *crtc);
int (*modeset_calc_cdclk)(struct intel_cdclk_state *state);
u8 (*calc_voltage_level)(int cdclk);
/* Returns the active state of the crtc, and if the crtc is active,
* fills out the pipe-config with the hw state. */
bool (*get_pipe_config)(struct intel_crtc *,
struct intel_crtc_state *);
void (*get_initial_plane_config)(struct intel_crtc *,
struct intel_initial_plane_config *);
int (*crtc_compute_clock)(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state);
void (*crtc_enable)(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void (*crtc_disable)(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void (*commit_modeset_enables)(struct intel_atomic_state *state);
void (*commit_modeset_disables)(struct intel_atomic_state *state);
void (*audio_codec_enable)(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state);
void (*audio_codec_disable)(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state);
void (*fdi_link_train)(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state);
void (*init_clock_gating)(struct drm_i915_private *dev_priv);
void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
/* clock updates for mode set */
/* cursor updates */
/* render clock increase/decrease */
/* display clock increase/decrease */
/* pll clock increase/decrease */
int (*color_check)(struct intel_crtc_state *crtc_state);
/*
* Program double buffered color management registers during
* vblank evasion. The registers should then latch during the
* next vblank start, alongside any other double buffered registers
* involved with the same commit.
*/
void (*color_commit)(const struct intel_crtc_state *crtc_state);
/*
* Load LUTs (and other single buffered color management
* registers). Will (hopefully) be called during the vblank
* following the latching of any double buffered registers
* involved with the same commit.
*/
void (*load_luts)(const struct intel_crtc_state *crtc_state);
void (*read_luts)(struct intel_crtc_state *crtc_state);
};
struct intel_csr {
struct work_struct work;
const char *fw_path;
u32 required_version;
u32 max_fw_size; /* bytes */
u32 *dmc_payload;
u32 dmc_fw_size; /* dwords */
u32 version;
u32 mmio_count;
i915_reg_t mmioaddr[20];
u32 mmiodata[20];
u32 dc_state;
u32 target_dc_state;
u32 allowed_dc_mask;
intel_wakeref_t wakeref;
};
enum i915_cache_level {
I915_CACHE_NONE = 0,
I915_CACHE_LLC, /* also used for snoopable memory on non-LLC */
I915_CACHE_L3_LLC, /* gen7+, L3 sits between the domain specifc
caches, eg sampler/render caches, and the
large Last-Level-Cache. LLC is coherent with
the CPU, but L3 is only visible to the GPU. */
I915_CACHE_WT, /* hsw:gt3e WriteThrough for scanouts */
};
#define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
struct intel_fbc {
/* This is always the inner lock when overlapping with struct_mutex and
* it's the outer lock when overlapping with stolen_lock. */
struct mutex lock;
unsigned threshold;
unsigned int possible_framebuffer_bits;
unsigned int busy_bits;
struct intel_crtc *crtc;
struct drm_mm_node compressed_fb;
struct drm_mm_node *compressed_llb;
bool false_color;
bool active;
bool activated;
bool flip_pending;
bool underrun_detected;
struct work_struct underrun_work;
/*
* Due to the atomic rules we can't access some structures without the
* appropriate locking, so we cache information here in order to avoid
* these problems.
*/
struct intel_fbc_state_cache {
struct {
unsigned int mode_flags;
u32 hsw_bdw_pixel_rate;
} crtc;
struct {
unsigned int rotation;
int src_w;
int src_h;
bool visible;
/*
* Display surface base address adjustement for
* pageflips. Note that on gen4+ this only adjusts up
* to a tile, offsets within a tile are handled in
* the hw itself (with the TILEOFF register).
*/
int adjusted_x;
int adjusted_y;
u16 pixel_blend_mode;
} plane;
struct {
const struct drm_format_info *format;
unsigned int stride;
u64 modifier;
} fb;
unsigned int fence_y_offset;
u16 gen9_wa_cfb_stride;
u16 interval;
s8 fence_id;
} state_cache;
/*
* This structure contains everything that's relevant to program the
* hardware registers. When we want to figure out if we need to disable
* and re-enable FBC for a new configuration we just check if there's
* something different in the struct. The genx_fbc_activate functions
* are supposed to read from it in order to program the registers.
*/
struct intel_fbc_reg_params {
struct {
enum pipe pipe;
enum i9xx_plane_id i9xx_plane;
} crtc;
struct {
const struct drm_format_info *format;
unsigned int stride;
u64 modifier;
} fb;
int cfb_size;
unsigned int fence_y_offset;
u16 gen9_wa_cfb_stride;
u16 interval;
s8 fence_id;
bool plane_visible;
} params;
const char *no_fbc_reason;
};
/*
* HIGH_RR is the highest eDP panel refresh rate read from EDID
* LOW_RR is the lowest eDP panel refresh rate found from EDID
* parsing for same resolution.
*/
enum drrs_refresh_rate_type {
DRRS_HIGH_RR,
DRRS_LOW_RR,
DRRS_MAX_RR, /* RR count */
};
enum drrs_support_type {
DRRS_NOT_SUPPORTED = 0,
STATIC_DRRS_SUPPORT = 1,
SEAMLESS_DRRS_SUPPORT = 2
};
struct intel_dp;
struct i915_drrs {
struct mutex mutex;
struct delayed_work work;
struct intel_dp *dp;
unsigned busy_frontbuffer_bits;
enum drrs_refresh_rate_type refresh_rate_type;
enum drrs_support_type type;
};
struct i915_psr {
struct mutex lock;
#define I915_PSR_DEBUG_MODE_MASK 0x0f
#define I915_PSR_DEBUG_DEFAULT 0x00
#define I915_PSR_DEBUG_DISABLE 0x01
#define I915_PSR_DEBUG_ENABLE 0x02
#define I915_PSR_DEBUG_FORCE_PSR1 0x03
#define I915_PSR_DEBUG_IRQ 0x10
u32 debug;
bool sink_support;
bool enabled;
struct intel_dp *dp;
enum pipe pipe;
enum transcoder transcoder;
bool active;
struct work_struct work;
unsigned busy_frontbuffer_bits;
bool sink_psr2_support;
bool link_standby;
bool colorimetry_support;
bool psr2_enabled;
bool psr2_sel_fetch_enabled;
u8 sink_sync_latency;
ktime_t last_entry_attempt;
ktime_t last_exit;
bool sink_not_reliable;
bool irq_aux_error;
u16 su_x_granularity;
bool dc3co_enabled;
u32 dc3co_exit_delay;
struct delayed_work dc3co_work;
bool force_mode_changed;
struct drm_dp_vsc_sdp vsc;
};
#define QUIRK_LVDS_SSC_DISABLE (1<<1)
#define QUIRK_INVERT_BRIGHTNESS (1<<2)
#define QUIRK_BACKLIGHT_PRESENT (1<<3)
#define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
#define QUIRK_INCREASE_T12_DELAY (1<<6)
#define QUIRK_INCREASE_DDI_DISABLED_TIME (1<<7)
struct intel_fbdev;
struct intel_fbc_work;
struct intel_gmbus {
struct i2c_adapter adapter;
#define GMBUS_FORCE_BIT_RETRY (1U << 31)
u32 force_bit;
u32 reg0;
i915_reg_t gpio_reg;
struct i2c_algo_bit_data bit_algo;
struct drm_i915_private *dev_priv;
};
struct i915_suspend_saved_registers {
u32 saveDSPARB;
u32 saveFBC_CONTROL;
u32 saveCACHE_MODE_0;
u32 saveMI_ARB_STATE;
u32 saveSWF0[16];
u32 saveSWF1[16];
u32 saveSWF3[3];
u32 savePCH_PORT_HOTPLUG;
u16 saveGCDGMBUS;
};
struct vlv_s0ix_state;
#define MAX_L3_SLICES 2
struct intel_l3_parity {
u32 *remap_info[MAX_L3_SLICES];
struct work_struct error_work;
int which_slice;
};
struct i915_gem_mm {
/** Memory allocator for GTT stolen memory */
struct drm_mm stolen;
/** Protects the usage of the GTT stolen memory allocator. This is
* always the inner lock when overlapping with struct_mutex. */
struct mutex stolen_lock;
/* Protects bound_list/unbound_list and #drm_i915_gem_object.mm.link */
spinlock_t obj_lock;
/**
* List of objects which are purgeable.
*/
struct list_head purge_list;
/**
* List of objects which have allocated pages and are shrinkable.
*/
struct list_head shrink_list;
/**
* List of objects which are pending destruction.
*/
struct llist_head free_list;
struct work_struct free_work;
/**
* Count of objects pending destructions. Used to skip needlessly
* waiting on an RCU barrier if no objects are waiting to be freed.
*/
atomic_t free_count;
/**
* tmpfs instance used for shmem backed objects
*/
struct vfsmount *gemfs;
struct intel_memory_region *regions[INTEL_REGION_UNKNOWN];
struct notifier_block oom_notifier;
struct notifier_block vmap_notifier;
struct shrinker shrinker;
/**
* Workqueue to fault in userptr pages, flushed by the execbuf
* when required but otherwise left to userspace to try again
* on EAGAIN.
*/
struct workqueue_struct *userptr_wq;
/* shrinker accounting, also useful for userland debugging */
u64 shrink_memory;
u32 shrink_count;
};
#define I915_IDLE_ENGINES_TIMEOUT (200) /* in ms */
unsigned long i915_fence_context_timeout(const struct drm_i915_private *i915,
u64 context);
static inline unsigned long
i915_fence_timeout(const struct drm_i915_private *i915)
{
return i915_fence_context_timeout(i915, U64_MAX);
}
/* Amount of SAGV/QGV points, BSpec precisely defines this */
#define I915_NUM_QGV_POINTS 8
struct ddi_vbt_port_info {
/* Non-NULL if port present. */
const struct child_device_config *child;
int max_tmds_clock;
/* This is an index in the HDMI/DVI DDI buffer translation table. */
u8 hdmi_level_shift;
u8 hdmi_level_shift_set:1;
u8 supports_dvi:1;
u8 supports_hdmi:1;
u8 supports_dp:1;
u8 supports_edp:1;
u8 supports_typec_usb:1;
u8 supports_tbt:1;
u8 alternate_aux_channel;
u8 alternate_ddc_pin;
u8 dp_boost_level;
u8 hdmi_boost_level;
int dp_max_link_rate; /* 0 for not limited by VBT */
};
enum psr_lines_to_wait {
PSR_0_LINES_TO_WAIT = 0,
PSR_1_LINE_TO_WAIT,
PSR_4_LINES_TO_WAIT,
PSR_8_LINES_TO_WAIT
};
struct intel_vbt_data {
struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */
struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */
/* Feature bits */
unsigned int int_tv_support:1;
unsigned int lvds_dither:1;
unsigned int int_crt_support:1;
unsigned int lvds_use_ssc:1;
unsigned int int_lvds_support:1;
unsigned int display_clock_mode:1;
unsigned int fdi_rx_polarity_inverted:1;
unsigned int panel_type:4;
int lvds_ssc_freq;
unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */
enum drm_panel_orientation orientation;
enum drrs_support_type drrs_type;
struct {
int rate;
int lanes;
int preemphasis;
int vswing;
bool low_vswing;
bool initialized;
int bpp;
struct edp_power_seq pps;
bool hobl;
} edp;
struct {
bool enable;
bool full_link;
bool require_aux_wakeup;
int idle_frames;
enum psr_lines_to_wait lines_to_wait;
int tp1_wakeup_time_us;
int tp2_tp3_wakeup_time_us;
int psr2_tp2_tp3_wakeup_time_us;
} psr;
struct {
u16 pwm_freq_hz;
bool present;
bool active_low_pwm;
u8 min_brightness; /* min_brightness/255 of max */
u8 controller; /* brightness controller number */
enum intel_backlight_type type;
} backlight;
/* MIPI DSI */
struct {
u16 panel_id;
struct mipi_config *config;
struct mipi_pps_data *pps;
u16 bl_ports;
u16 cabc_ports;
u8 seq_version;
u32 size;
u8 *data;
const u8 *sequence[MIPI_SEQ_MAX];
u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
enum drm_panel_orientation orientation;
} dsi;
int crt_ddc_pin;
struct list_head display_devices;
struct ddi_vbt_port_info ddi_port_info[I915_MAX_PORTS];
struct sdvo_device_mapping sdvo_mappings[2];
};
enum intel_ddb_partitioning {
INTEL_DDB_PART_1_2,
INTEL_DDB_PART_5_6, /* IVB+ */
};
struct ilk_wm_values {
u32 wm_pipe[3];
u32 wm_lp[3];
u32 wm_lp_spr[3];
bool enable_fbc_wm;
enum intel_ddb_partitioning partitioning;
};
struct g4x_pipe_wm {
u16 plane[I915_MAX_PLANES];
u16 fbc;
};
struct g4x_sr_wm {
u16 plane;
u16 cursor;
u16 fbc;
};
struct vlv_wm_ddl_values {
u8 plane[I915_MAX_PLANES];
};
struct vlv_wm_values {
struct g4x_pipe_wm pipe[3];
struct g4x_sr_wm sr;
struct vlv_wm_ddl_values ddl[3];
u8 level;
bool cxsr;
};
struct g4x_wm_values {
struct g4x_pipe_wm pipe[2];
struct g4x_sr_wm sr;
struct g4x_sr_wm hpll;
bool cxsr;
bool hpll_en;
bool fbc_en;
};
struct skl_ddb_entry {
u16 start, end; /* in number of blocks, 'end' is exclusive */
};
static inline u16 skl_ddb_entry_size(const struct skl_ddb_entry *entry)
{
return entry->end - entry->start;
}
static inline bool skl_ddb_entry_equal(const struct skl_ddb_entry *e1,
const struct skl_ddb_entry *e2)
{
if (e1->start == e2->start && e1->end == e2->end)
return true;
return false;
}
struct i915_frontbuffer_tracking {
spinlock_t lock;
/*
* Tracking bits for delayed frontbuffer flushing du to gpu activity or
* scheduled flips.
*/
unsigned busy_bits;
unsigned flip_bits;
};
struct i915_virtual_gpu {
struct mutex lock; /* serialises sending of g2v_notify command pkts */
bool active;
u32 caps;
};
struct intel_cdclk_config {
unsigned int cdclk, vco, ref, bypass;
u8 voltage_level;
};
struct i915_selftest_stash {
atomic_t counter;
};
struct drm_i915_private {
struct drm_device drm;
/* FIXME: Device release actions should all be moved to drmm_ */
bool do_release;
/* i915 device parameters */
struct i915_params params;
const struct intel_device_info __info; /* Use INTEL_INFO() to access. */
struct intel_runtime_info __runtime; /* Use RUNTIME_INFO() to access. */
struct intel_driver_caps caps;
/**
* Data Stolen Memory - aka "i915 stolen memory" gives us the start and
* end of stolen which we can optionally use to create GEM objects
* backed by stolen memory. Note that stolen_usable_size tells us
* exactly how much of this we are actually allowed to use, given that
* some portion of it is in fact reserved for use by hardware functions.
*/
struct resource dsm;
/**
* Reseved portion of Data Stolen Memory
*/
struct resource dsm_reserved;
/*
* Stolen memory is segmented in hardware with different portions
* offlimits to certain functions.
*
* The drm_mm is initialised to the total accessible range, as found
* from the PCI config. On Broadwell+, this is further restricted to
* avoid the first page! The upper end of stolen memory is reserved for
* hardware functions and similarly removed from the accessible range.
*/
resource_size_t stolen_usable_size; /* Total size minus reserved ranges */
struct intel_uncore uncore;
struct intel_uncore_mmio_debug mmio_debug;
struct i915_virtual_gpu vgpu;
struct intel_gvt *gvt;
struct intel_wopcm wopcm;
struct intel_csr csr;
struct intel_gmbus gmbus[GMBUS_NUM_PINS];
/** gmbus_mutex protects against concurrent usage of the single hw gmbus
* controller on different i2c buses. */
struct mutex gmbus_mutex;
/**
* Base address of where the gmbus and gpio blocks are located (either
* on PCH or on SoC for platforms without PCH).
*/
u32 gpio_mmio_base;
u32 hsw_psr_mmio_adjust;
/* MMIO base address for MIPI regs */
u32 mipi_mmio_base;
u32 pps_mmio_base;
wait_queue_head_t gmbus_wait_queue;
struct pci_dev *bridge_dev;
struct rb_root uabi_engines;
struct resource mch_res;
/* protects the irq masks */
spinlock_t irq_lock;
bool display_irqs_enabled;
/* To control wakeup latency, e.g. for irq-driven dp aux transfers. */
struct pm_qos_request pm_qos;
/* Sideband mailbox protection */
struct mutex sb_lock;
struct pm_qos_request sb_qos;
/** Cached value of IMR to avoid reads in updating the bitfield */
union {
u32 irq_mask;
u32 de_irq_mask[I915_MAX_PIPES];
};
u32 pipestat_irq_mask[I915_MAX_PIPES];
struct i915_hotplug hotplug;
struct intel_fbc fbc;
struct i915_drrs drrs;
struct intel_opregion opregion;
struct intel_vbt_data vbt;
bool preserve_bios_swizzle;
/* overlay */
struct intel_overlay *overlay;
/* backlight registers and fields in struct intel_panel */
struct mutex backlight_lock;
/* protects panel power sequencer state */
struct mutex pps_mutex;
unsigned int fsb_freq, mem_freq, is_ddr3;
unsigned int skl_preferred_vco_freq;
unsigned int max_cdclk_freq;
unsigned int max_dotclk_freq;
unsigned int hpll_freq;
unsigned int fdi_pll_freq;
unsigned int czclk_freq;
struct {
/* The current hardware cdclk configuration */
struct intel_cdclk_config hw;
/* cdclk, divider, and ratio table from bspec */
const struct intel_cdclk_vals *table;
struct intel_global_obj obj;
} cdclk;
struct {
/* The current hardware dbuf configuration */
u8 enabled_slices;
struct intel_global_obj obj;
} dbuf;
/**
* wq - Driver workqueue for GEM.
*
* NOTE: Work items scheduled here are not allowed to grab any modeset
* locks, for otherwise the flushing done in the pageflip code will
* result in deadlocks.
*/
struct workqueue_struct *wq;
/* ordered wq for modesets */
struct workqueue_struct *modeset_wq;
/* unbound hipri wq for page flips/plane updates */
struct workqueue_struct *flip_wq;
/* Display functions */
struct drm_i915_display_funcs display;
/* PCH chipset type */
enum intel_pch pch_type;
unsigned short pch_id;
unsigned long quirks;
struct drm_atomic_state *modeset_restore_state;
struct drm_modeset_acquire_ctx reset_ctx;
struct i915_ggtt ggtt; /* VM representing the global address space */
struct i915_gem_mm mm;
DECLARE_HASHTABLE(mm_structs, 7);
spinlock_t mm_lock;
/* Kernel Modesetting */
struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
/**
* dpll and cdclk state is protected by connection_mutex
* dpll.lock serializes intel_{prepare,enable,disable}_shared_dpll.
* Must be global rather than per dpll, because on some platforms plls
* share registers.
*/
struct {
struct mutex lock;
int num_shared_dpll;
struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
const struct intel_dpll_mgr *mgr;
struct {
int nssc;
int ssc;
} ref_clks;
} dpll;
struct list_head global_obj_list;
/*
* For reading active_pipes holding any crtc lock is
* sufficient, for writing must hold all of them.
*/
u8 active_pipes;
int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
struct i915_wa_list gt_wa_list;
struct i915_frontbuffer_tracking fb_tracking;
struct intel_atomic_helper {
struct llist_head free_list;
struct work_struct free_work;
} atomic_helper;
bool mchbar_need_disable;
struct intel_l3_parity l3_parity;
/*
* HTI (aka HDPORT) state read during initial hw readout. Most
* platforms don't have HTI, so this will just stay 0. Those that do
* will use this later to figure out which PLLs and PHYs are unavailable
* for driver usage.
*/
u32 hti_state;
/*
* edram size in MB.
* Cannot be determined by PCIID. You must always read a register.
*/
u32 edram_size_mb;
struct i915_power_domains power_domains;
struct i915_psr psr;
struct i915_gpu_error gpu_error;
struct drm_i915_gem_object *vlv_pctx;
/* list of fbdev register on this device */
struct intel_fbdev *fbdev;
struct work_struct fbdev_suspend_work;
struct drm_property *broadcast_rgb_property;
struct drm_property *force_audio_property;
/* hda/i915 audio component */
struct i915_audio_component *audio_component;
bool audio_component_registered;
/**
* av_mutex - mutex for audio/video sync
*
*/
struct mutex av_mutex;
int audio_power_refcount;
u32 audio_freq_cntrl;
u32 fdi_rx_config;
/* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
u32 chv_phy_control;
/*
* Shadows for CHV DPLL_MD regs to keep the state
* checker somewhat working in the presence hardware
* crappiness (can't read out DPLL_MD for pipes B & C).
*/
u32 chv_dpll_md[I915_MAX_PIPES];
u32 bxt_phy_grc;
u32 suspend_count;
bool power_domains_suspended;
struct i915_suspend_saved_registers regfile;
struct vlv_s0ix_state *vlv_s0ix_state;
enum {
I915_SAGV_UNKNOWN = 0,
I915_SAGV_DISABLED,
I915_SAGV_ENABLED,
I915_SAGV_NOT_CONTROLLED
} sagv_status;
u32 sagv_block_time_us;
struct {
/*
* Raw watermark latency values:
* in 0.1us units for WM0,
* in 0.5us units for WM1+.
*/
/* primary */
u16 pri_latency[5];
/* sprite */
u16 spr_latency[5];
/* cursor */
u16 cur_latency[5];
/*
* Raw watermark memory latency values
* for SKL for all 8 levels
* in 1us units.
*/
u16 skl_latency[8];
/* current hardware state */
union {
struct ilk_wm_values hw;
struct vlv_wm_values vlv;
struct g4x_wm_values g4x;
};
u8 max_level;
/*
* Should be held around atomic WM register writing; also
* protects * intel_crtc->wm.active and
* crtc_state->wm.need_postvbl_update.
*/
struct mutex wm_mutex;
/*
* Set during HW readout of watermarks/DDB. Some platforms
* need to know when we're still using BIOS-provided values
* (which we don't fully trust).
*
* FIXME get rid of this.
*/
bool distrust_bios_wm;
} wm;
struct dram_info {
bool valid;
bool is_16gb_dimm;
u8 num_channels;
u8 ranks;
u32 bandwidth_kbps;
bool symmetric_memory;
enum intel_dram_type {
INTEL_DRAM_UNKNOWN,
INTEL_DRAM_DDR3,
INTEL_DRAM_DDR4,
INTEL_DRAM_LPDDR3,
INTEL_DRAM_LPDDR4
} type;
} dram_info;
struct intel_bw_info {
/* for each QGV point */
unsigned int deratedbw[I915_NUM_QGV_POINTS];
u8 num_qgv_points;
u8 num_planes;
} max_bw[6];
struct intel_global_obj bw_obj;
struct intel_runtime_pm runtime_pm;
struct i915_perf perf;
/* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
struct intel_gt gt;
struct {
struct i915_gem_contexts {
spinlock_t lock; /* locks list */
struct list_head list;
struct llist_head free_list;
struct work_struct free_work;
} contexts;
/*
* We replace the local file with a global mappings as the
* backing storage for the mmap is on the device and not
* on the struct file, and we do not want to prolong the
* lifetime of the local fd. To minimise the number of
* anonymous inodes we create, we use a global singleton to
* share the global mapping.
*/
struct file *mmap_singleton;
} gem;
u8 pch_ssc_use;
/* For i915gm/i945gm vblank irq workaround */
u8 vblank_enabled;
/* perform PHY state sanity checks? */
bool chv_phy_assert[2];
bool ipc_enabled;
/* Used to save the pipe-to-encoder mapping for audio */
struct intel_encoder *av_enc_map[I915_MAX_PIPES];
/* necessary resource sharing with HDMI LPE audio driver. */
struct {
struct platform_device *platdev;
int irq;
} lpe_audio;
struct i915_pmu pmu;
struct i915_hdcp_comp_master *hdcp_master;
bool hdcp_comp_added;
/* Mutex to protect the above hdcp component related values. */
struct mutex hdcp_comp_mutex;
I915_SELFTEST_DECLARE(struct i915_selftest_stash selftest;)
/*
* NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
* will be rejected. Instead look for a better place.
*/
};
static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
{
return container_of(dev, struct drm_i915_private, drm);
}
static inline struct drm_i915_private *kdev_to_i915(struct device *kdev)
{
return dev_get_drvdata(kdev);
}
static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
{
return pci_get_drvdata(pdev);
}
/* Simple iterator over all initialised engines */
#define for_each_engine(engine__, dev_priv__, id__) \
for ((id__) = 0; \
(id__) < I915_NUM_ENGINES; \
(id__)++) \
for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
/* Iterator over subset of engines selected by mask */
#define for_each_engine_masked(engine__, gt__, mask__, tmp__) \
for ((tmp__) = (mask__) & (gt__)->info.engine_mask; \
(tmp__) ? \
((engine__) = (gt__)->engine[__mask_next_bit(tmp__)]), 1 : \
0;)
#define rb_to_uabi_engine(rb) \
rb_entry_safe(rb, struct intel_engine_cs, uabi_node)
#define for_each_uabi_engine(engine__, i915__) \
for ((engine__) = rb_to_uabi_engine(rb_first(&(i915__)->uabi_engines));\
(engine__); \
(engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
#define for_each_uabi_class_engine(engine__, class__, i915__) \
for ((engine__) = intel_engine_lookup_user((i915__), (class__), 0); \
(engine__) && (engine__)->uabi_class == (class__); \
(engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
#define I915_GTT_OFFSET_NONE ((u32)-1)
/*
* Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
* considered to be the frontbuffer for the given plane interface-wise. This
* doesn't mean that the hw necessarily already scans it out, but that any
* rendering (by the cpu or gpu) will land in the frontbuffer eventually.
*
* We have one bit per pipe and per scanout plane type.
*/
#define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
#define INTEL_FRONTBUFFER(pipe, plane_id) ({ \
BUILD_BUG_ON(INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES > 32); \
BUILD_BUG_ON(I915_MAX_PLANES > INTEL_FRONTBUFFER_BITS_PER_PIPE); \
BIT((plane_id) + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)); \
})
#define INTEL_FRONTBUFFER_OVERLAY(pipe) \
BIT(INTEL_FRONTBUFFER_BITS_PER_PIPE - 1 + INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
#define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
GENMASK(INTEL_FRONTBUFFER_BITS_PER_PIPE * ((pipe) + 1) - 1, \
INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))
#define INTEL_INFO(dev_priv) (&(dev_priv)->__info)
#define RUNTIME_INFO(dev_priv) (&(dev_priv)->__runtime)
#define DRIVER_CAPS(dev_priv) (&(dev_priv)->caps)
#define INTEL_GEN(dev_priv) (INTEL_INFO(dev_priv)->gen)
#define INTEL_DEVID(dev_priv) (RUNTIME_INFO(dev_priv)->device_id)
#define REVID_FOREVER 0xff
#define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
#define INTEL_GEN_MASK(s, e) ( \
BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
GENMASK((e) - 1, (s) - 1))
/* Returns true if Gen is in inclusive range [Start, End] */
#define IS_GEN_RANGE(dev_priv, s, e) \
(!!(INTEL_INFO(dev_priv)->gen_mask & INTEL_GEN_MASK((s), (e))))
#define IS_GEN(dev_priv, n) \
(BUILD_BUG_ON_ZERO(!__builtin_constant_p(n)) + \
INTEL_INFO(dev_priv)->gen == (n))
#define HAS_DSB(dev_priv) (INTEL_INFO(dev_priv)->display.has_dsb)
/*
* Return true if revision is in range [since,until] inclusive.
*
* Use 0 for open-ended since, and REVID_FOREVER for open-ended until.
*/
#define IS_REVID(p, since, until) \
(INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
static __always_inline unsigned int
__platform_mask_index(const struct intel_runtime_info *info,
enum intel_platform p)
{
const unsigned int pbits =
BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
/* Expand the platform_mask array if this fails. */
BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
pbits * ARRAY_SIZE(info->platform_mask));
return p / pbits;
}
static __always_inline unsigned int
__platform_mask_bit(const struct intel_runtime_info *info,
enum intel_platform p)
{
const unsigned int pbits =
BITS_PER_TYPE(info->platform_mask[0]) - INTEL_SUBPLATFORM_BITS;
return p % pbits + INTEL_SUBPLATFORM_BITS;
}
static inline u32
intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
{
const unsigned int pi = __platform_mask_index(info, p);
return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
}
static __always_inline bool
IS_PLATFORM(const struct drm_i915_private *i915, enum intel_platform p)
{
const struct intel_runtime_info *info = RUNTIME_INFO(i915);
const unsigned int pi = __platform_mask_index(info, p);
const unsigned int pb = __platform_mask_bit(info, p);
BUILD_BUG_ON(!__builtin_constant_p(p));
return info->platform_mask[pi] & BIT(pb);
}
static __always_inline bool
IS_SUBPLATFORM(const struct drm_i915_private *i915,
enum intel_platform p, unsigned int s)
{
const struct intel_runtime_info *info = RUNTIME_INFO(i915);
const unsigned int pi = __platform_mask_index(info, p);
const unsigned int pb = __platform_mask_bit(info, p);
const unsigned int msb = BITS_PER_TYPE(info->platform_mask[0]) - 1;
const u32 mask = info->platform_mask[pi];
BUILD_BUG_ON(!__builtin_constant_p(p));
BUILD_BUG_ON(!__builtin_constant_p(s));
BUILD_BUG_ON((s) >= INTEL_SUBPLATFORM_BITS);
/* Shift and test on the MSB position so sign flag can be used. */
return ((mask << (msb - pb)) & (mask << (msb - s))) & BIT(msb);
}
#define IS_MOBILE(dev_priv) (INTEL_INFO(dev_priv)->is_mobile)
#define IS_DGFX(dev_priv) (INTEL_INFO(dev_priv)->is_dgfx)
#define IS_I830(dev_priv) IS_PLATFORM(dev_priv, INTEL_I830)
#define IS_I845G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I845G)
#define IS_I85X(dev_priv) IS_PLATFORM(dev_priv, INTEL_I85X)
#define IS_I865G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I865G)
#define IS_I915G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915G)
#define IS_I915GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I915GM)
#define IS_I945G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945G)
#define IS_I945GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I945GM)
#define IS_I965G(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965G)
#define IS_I965GM(dev_priv) IS_PLATFORM(dev_priv, INTEL_I965GM)
#define IS_G45(dev_priv) IS_PLATFORM(dev_priv, INTEL_G45)
#define IS_GM45(dev_priv) IS_PLATFORM(dev_priv, INTEL_GM45)
#define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
#define IS_PINEVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
#define IS_G33(dev_priv) IS_PLATFORM(dev_priv, INTEL_G33)
#define IS_IRONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IRONLAKE)
#define IS_IRONLAKE_M(dev_priv) \
(IS_PLATFORM(dev_priv, INTEL_IRONLAKE) && IS_MOBILE(dev_priv))
#define IS_IVYBRIDGE(dev_priv) IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
#define IS_IVB_GT1(dev_priv) (IS_IVYBRIDGE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 1)
#define IS_VALLEYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
#define IS_CHERRYVIEW(dev_priv) IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
#define IS_HASWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_HASWELL)
#define IS_BROADWELL(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROADWELL)
#define IS_SKYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
#define IS_BROXTON(dev_priv) IS_PLATFORM(dev_priv, INTEL_BROXTON)
#define IS_KABYLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
#define IS_GEMINILAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
#define IS_COFFEELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
#define IS_COMETLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_COMETLAKE)
#define IS_CANNONLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
#define IS_ICELAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ICELAKE)
#define IS_ELKHARTLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE)
#define IS_TIGERLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_TIGERLAKE)
#define IS_ROCKETLAKE(dev_priv) IS_PLATFORM(dev_priv, INTEL_ROCKETLAKE)
#define IS_DG1(dev_priv) IS_PLATFORM(dev_priv, INTEL_DG1)
#define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
#define IS_BDW_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULT)
#define IS_BDW_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_BROADWELL, INTEL_SUBPLATFORM_ULX)
#define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 3)
#define IS_HSW_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULT)
#define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 3)
#define IS_HSW_GT1(dev_priv) (IS_HASWELL(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 1)
/* ULX machines are also considered ULT. */
#define IS_HSW_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_HASWELL, INTEL_SUBPLATFORM_ULX)
#define IS_SKL_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULT)
#define IS_SKL_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_SKYLAKE, INTEL_SUBPLATFORM_ULX)
#define IS_KBL_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULT)
#define IS_KBL_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_KABYLAKE, INTEL_SUBPLATFORM_ULX)
#define IS_SKL_GT2(dev_priv) (IS_SKYLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 2)
#define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 3)
#define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 4)
#define IS_KBL_GT2(dev_priv) (IS_KABYLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 2)
#define IS_KBL_GT3(dev_priv) (IS_KABYLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 3)
#define IS_CFL_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULT)
#define IS_CFL_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_COFFEELAKE, INTEL_SUBPLATFORM_ULX)
#define IS_CFL_GT2(dev_priv) (IS_COFFEELAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 2)
#define IS_CFL_GT3(dev_priv) (IS_COFFEELAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 3)
#define IS_CML_ULT(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_COMETLAKE, INTEL_SUBPLATFORM_ULT)
#define IS_CML_ULX(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_COMETLAKE, INTEL_SUBPLATFORM_ULX)
#define IS_CML_GT2(dev_priv) (IS_COMETLAKE(dev_priv) && \
INTEL_INFO(dev_priv)->gt == 2)
#define IS_CNL_WITH_PORT_F(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_CANNONLAKE, INTEL_SUBPLATFORM_PORTF)
#define IS_ICL_WITH_PORT_F(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_ICELAKE, INTEL_SUBPLATFORM_PORTF)
#define IS_TGL_U(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_TIGERLAKE, INTEL_SUBPLATFORM_ULT)
#define IS_TGL_Y(dev_priv) \
IS_SUBPLATFORM(dev_priv, INTEL_TIGERLAKE, INTEL_SUBPLATFORM_ULX)
#define SKL_REVID_A0 0x0
#define SKL_REVID_B0 0x1
#define SKL_REVID_C0 0x2
#define SKL_REVID_D0 0x3
#define SKL_REVID_E0 0x4
#define SKL_REVID_F0 0x5
#define SKL_REVID_G0 0x6
#define SKL_REVID_H0 0x7
#define IS_SKL_REVID(p, since, until) (IS_SKYLAKE(p) && IS_REVID(p, since, until))
#define BXT_REVID_A0 0x0
#define BXT_REVID_A1 0x1
#define BXT_REVID_B0 0x3
#define BXT_REVID_B_LAST 0x8
#define BXT_REVID_C0 0x9
#define IS_BXT_REVID(dev_priv, since, until) \
(IS_BROXTON(dev_priv) && IS_REVID(dev_priv, since, until))
enum {
KBL_REVID_A0,
KBL_REVID_B0,
KBL_REVID_B1,
KBL_REVID_C0,
KBL_REVID_D0,
KBL_REVID_D1,
KBL_REVID_E0,
KBL_REVID_F0,
KBL_REVID_G0,
};
struct i915_rev_steppings {
u8 gt_stepping;
u8 disp_stepping;
};
/* Defined in intel_workarounds.c */
extern const struct i915_rev_steppings kbl_revids[];
#define IS_KBL_GT_REVID(dev_priv, since, until) \
(IS_KABYLAKE(dev_priv) && \
kbl_revids[INTEL_REVID(dev_priv)].gt_stepping >= since && \
kbl_revids[INTEL_REVID(dev_priv)].gt_stepping <= until)
#define IS_KBL_DISP_REVID(dev_priv, since, until) \
(IS_KABYLAKE(dev_priv) && \
kbl_revids[INTEL_REVID(dev_priv)].disp_stepping >= since && \
kbl_revids[INTEL_REVID(dev_priv)].disp_stepping <= until)
#define GLK_REVID_A0 0x0
#define GLK_REVID_A1 0x1
#define GLK_REVID_A2 0x2
#define GLK_REVID_B0 0x3
#define IS_GLK_REVID(dev_priv, since, until) \
(IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
#define CNL_REVID_A0 0x0
#define CNL_REVID_B0 0x1
#define CNL_REVID_C0 0x2
#define IS_CNL_REVID(p, since, until) \
(IS_CANNONLAKE(p) && IS_REVID(p, since, until))
#define ICL_REVID_A0 0x0
#define ICL_REVID_A2 0x1
#define ICL_REVID_B0 0x3
#define ICL_REVID_B2 0x4
#define ICL_REVID_C0 0x5
#define IS_ICL_REVID(p, since, until) \
(IS_ICELAKE(p) && IS_REVID(p, since, until))
#define EHL_REVID_A0 0x0
#define IS_EHL_REVID(p, since, until) \
(IS_ELKHARTLAKE(p) && IS_REVID(p, since, until))
#define TGL_REVID_A0 0x0
#define TGL_REVID_B0 0x1
#define TGL_REVID_C0 0x2
#define IS_TGL_REVID(p, since, until) \
(IS_TIGERLAKE(p) && IS_REVID(p, since, until))
#define RKL_REVID_A0 0x0
#define RKL_REVID_B0 0x1
#define RKL_REVID_C0 0x4
#define IS_RKL_REVID(p, since, until) \
(IS_ROCKETLAKE(p) && IS_REVID(p, since, until))
#define DG1_REVID_A0 0x0
#define DG1_REVID_B0 0x1
#define IS_DG1_REVID(p, since, until) \
(IS_DG1(p) && IS_REVID(p, since, until))
#define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
#define IS_GEN9_LP(dev_priv) (IS_GEN(dev_priv, 9) && IS_LP(dev_priv))
#define IS_GEN9_BC(dev_priv) (IS_GEN(dev_priv, 9) && !IS_LP(dev_priv))
#define __HAS_ENGINE(engine_mask, id) ((engine_mask) & BIT(id))
#define HAS_ENGINE(gt, id) __HAS_ENGINE((gt)->info.engine_mask, id)
#define ENGINE_INSTANCES_MASK(gt, first, count) ({ \
unsigned int first__ = (first); \
unsigned int count__ = (count); \
((gt)->info.engine_mask & \
GENMASK(first__ + count__ - 1, first__)) >> first__; \
})
#define VDBOX_MASK(gt) \
ENGINE_INSTANCES_MASK(gt, VCS0, I915_MAX_VCS)
#define VEBOX_MASK(gt) \
ENGINE_INSTANCES_MASK(gt, VECS0, I915_MAX_VECS)
/*
* The Gen7 cmdparser copies the scanned buffer to the ggtt for execution
* All later gens can run the final buffer from the ppgtt
*/
#define CMDPARSER_USES_GGTT(dev_priv) IS_GEN(dev_priv, 7)
#define HAS_LLC(dev_priv) (INTEL_INFO(dev_priv)->has_llc)
#define HAS_SNOOP(dev_priv) (INTEL_INFO(dev_priv)->has_snoop)
#define HAS_EDRAM(dev_priv) ((dev_priv)->edram_size_mb)
#define HAS_SECURE_BATCHES(dev_priv) (INTEL_GEN(dev_priv) < 6)
#define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
#define HWS_NEEDS_PHYSICAL(dev_priv) (INTEL_INFO(dev_priv)->hws_needs_physical)
#define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
(INTEL_INFO(dev_priv)->has_logical_ring_contexts)
#define HAS_LOGICAL_RING_ELSQ(dev_priv) \
(INTEL_INFO(dev_priv)->has_logical_ring_elsq)
#define HAS_LOGICAL_RING_PREEMPTION(dev_priv) \
(INTEL_INFO(dev_priv)->has_logical_ring_preemption)
#define HAS_MASTER_UNIT_IRQ(dev_priv) (INTEL_INFO(dev_priv)->has_master_unit_irq)
#define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
#define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_type)
#define HAS_PPGTT(dev_priv) \
(INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
#define HAS_FULL_PPGTT(dev_priv) \
(INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
#define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
GEM_BUG_ON((sizes) == 0); \
((sizes) & ~INTEL_INFO(dev_priv)->page_sizes) == 0; \
})
#define HAS_OVERLAY(dev_priv) (INTEL_INFO(dev_priv)->display.has_overlay)
#define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
(INTEL_INFO(dev_priv)->display.overlay_needs_physical)
/* Early gen2 have a totally busted CS tlb and require pinned batches. */
#define HAS_BROKEN_CS_TLB(dev_priv) (IS_I830(dev_priv) || IS_I845G(dev_priv))
#define NEEDS_RC6_CTX_CORRUPTION_WA(dev_priv) \
(IS_BROADWELL(dev_priv) || IS_GEN(dev_priv, 9))
/* WaRsDisableCoarsePowerGating:skl,cnl */
#define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
(IS_CANNONLAKE(dev_priv) || \
IS_SKL_GT3(dev_priv) || \
IS_SKL_GT4(dev_priv))
#define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
#define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
IS_GEMINILAKE(dev_priv) || \
IS_KABYLAKE(dev_priv))
/* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
* rows, which changed the alignment requirements and fence programming.
*/
#define HAS_128_BYTE_Y_TILING(dev_priv) (!IS_GEN(dev_priv, 2) && \
!(IS_I915G(dev_priv) || \
IS_I915GM(dev_priv)))
#define SUPPORTS_TV(dev_priv) (INTEL_INFO(dev_priv)->display.supports_tv)
#define I915_HAS_HOTPLUG(dev_priv) (INTEL_INFO(dev_priv)->display.has_hotplug)
#define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
#define HAS_FBC(dev_priv) (INTEL_INFO(dev_priv)->display.has_fbc)
#define HAS_CUR_FBC(dev_priv) (!HAS_GMCH(dev_priv) && INTEL_GEN(dev_priv) >= 7)
#define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
#define HAS_DP_MST(dev_priv) (INTEL_INFO(dev_priv)->display.has_dp_mst)
#define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
#define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
#define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
#define HAS_PSR_HW_TRACKING(dev_priv) \
(INTEL_INFO(dev_priv)->display.has_psr_hw_tracking)
#define HAS_PSR2_SEL_FETCH(dev_priv) (INTEL_GEN(dev_priv) >= 12)
#define HAS_TRANSCODER(dev_priv, trans) ((INTEL_INFO(dev_priv)->cpu_transcoder_mask & BIT(trans)) != 0)
#define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)
#define HAS_RC6p(dev_priv) (INTEL_INFO(dev_priv)->has_rc6p)
#define HAS_RC6pp(dev_priv) (false) /* HW was never validated */
#define HAS_RPS(dev_priv) (INTEL_INFO(dev_priv)->has_rps)
#define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
#define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
#define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
#define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
#define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
#define HAS_LMEM(i915) HAS_REGION(i915, REGION_LMEM)
#define HAS_GT_UC(dev_priv) (INTEL_INFO(dev_priv)->has_gt_uc)
#define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu)
#define HAS_GLOBAL_MOCS_REGISTERS(dev_priv) (INTEL_INFO(dev_priv)->has_global_mocs)
#define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
#define HAS_LSPCON(dev_priv) (INTEL_GEN(dev_priv) >= 9)
/* DPF == dynamic parity feature */
#define HAS_L3_DPF(dev_priv) (INTEL_INFO(dev_priv)->has_l3_dpf)
#define NUM_L3_SLICES(dev_priv) (IS_HSW_GT3(dev_priv) ? \
2 : HAS_L3_DPF(dev_priv))
#define GT_FREQUENCY_MULTIPLIER 50
#define GEN9_FREQ_SCALER 3
#define INTEL_NUM_PIPES(dev_priv) (hweight8(INTEL_INFO(dev_priv)->pipe_mask))
#define HAS_DISPLAY(dev_priv) (INTEL_INFO(dev_priv)->pipe_mask != 0)
/* Only valid when HAS_DISPLAY() is true */
#define INTEL_DISPLAY_ENABLED(dev_priv) \
(drm_WARN_ON(&(dev_priv)->drm, !HAS_DISPLAY(dev_priv)), !(dev_priv)->params.disable_display)
static inline bool intel_vtd_active(void)
{
#ifdef CONFIG_INTEL_IOMMU
if (intel_iommu_gfx_mapped)
return true;
#endif
return false;
}
static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
{
return INTEL_GEN(dev_priv) >= 6 && intel_vtd_active();
}
static inline bool
intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
{
return IS_BROXTON(dev_priv) && intel_vtd_active();
}
/* i915_drv.c */
extern const struct dev_pm_ops i915_pm_ops;
int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
void i915_driver_remove(struct drm_i915_private *i915);
int i915_resume_switcheroo(struct drm_i915_private *i915);
int i915_suspend_switcheroo(struct drm_i915_private *i915, pm_message_t state);
int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
/* i915_gem.c */
int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
void i915_gem_init_early(struct drm_i915_private *dev_priv);
void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
int i915_gem_freeze(struct drm_i915_private *dev_priv);
int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915);
static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
{
/*
* A single pass should suffice to release all the freed objects (along
* most call paths) , but be a little more paranoid in that freeing
* the objects does take a little amount of time, during which the rcu
* callbacks could have added new objects into the freed list, and
* armed the work again.
*/
while (atomic_read(&i915->mm.free_count)) {
flush_work(&i915->mm.free_work);
rcu_barrier();
}
}
static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
{
/*
* Similar to objects above (see i915_gem_drain_freed-objects), in
* general we have workers that are armed by RCU and then rearm
* themselves in their callbacks. To be paranoid, we need to
* drain the workqueue a second time after waiting for the RCU
* grace period so that we catch work queued via RCU from the first
* pass. As neither drain_workqueue() nor flush_workqueue() report
* a result, we make an assumption that we only don't require more
* than 3 passes to catch all _recursive_ RCU delayed work.
*
*/
int pass = 3;
do {
flush_workqueue(i915->wq);
rcu_barrier();
i915_gem_drain_freed_objects(i915);
} while (--pass);
drain_workqueue(i915->wq);
}
struct i915_vma * __must_check
i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
struct i915_gem_ww_ctx *ww,
const struct i915_ggtt_view *view,
u64 size, u64 alignment, u64 flags);
static inline struct i915_vma * __must_check
i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
const struct i915_ggtt_view *view,
u64 size, u64 alignment, u64 flags)
{
return i915_gem_object_ggtt_pin_ww(obj, NULL, view, size, alignment, flags);
}
int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
unsigned long flags);
#define I915_GEM_OBJECT_UNBIND_ACTIVE BIT(0)
#define I915_GEM_OBJECT_UNBIND_BARRIER BIT(1)
#define I915_GEM_OBJECT_UNBIND_TEST BIT(2)
void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
int i915_gem_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
static inline u32 i915_reset_count(struct i915_gpu_error *error)
{
return atomic_read(&error->reset_count);
}
static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
const struct intel_engine_cs *engine)
{
return atomic_read(&error->reset_engine_count[engine->uabi_class]);
}
int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
void i915_gem_driver_register(struct drm_i915_private *i915);
void i915_gem_driver_unregister(struct drm_i915_private *i915);
void i915_gem_driver_remove(struct drm_i915_private *dev_priv);
void i915_gem_driver_release(struct drm_i915_private *dev_priv);
void i915_gem_suspend(struct drm_i915_private *dev_priv);
void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
void i915_gem_resume(struct drm_i915_private *dev_priv);
int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);
int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
enum i915_cache_level cache_level);
struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf);
struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags);
static inline struct i915_gem_context *
__i915_gem_context_lookup_rcu(struct drm_i915_file_private *file_priv, u32 id)
{
return xa_load(&file_priv->context_xa, id);
}
static inline struct i915_gem_context *
i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
{
struct i915_gem_context *ctx;
rcu_read_lock();
ctx = __i915_gem_context_lookup_rcu(file_priv, id);
if (ctx && !kref_get_unless_zero(&ctx->ref))
ctx = NULL;
rcu_read_unlock();
return ctx;
}
/* i915_gem_evict.c */
int __must_check i915_gem_evict_something(struct i915_address_space *vm,
u64 min_size, u64 alignment,
unsigned long color,
u64 start, u64 end,
unsigned flags);
int __must_check i915_gem_evict_for_node(struct i915_address_space *vm,
struct drm_mm_node *node,
unsigned int flags);
int i915_gem_evict_vm(struct i915_address_space *vm);
/* i915_gem_internal.c */
struct drm_i915_gem_object *
i915_gem_object_create_internal(struct drm_i915_private *dev_priv,
phys_addr_t size);
/* i915_gem_tiling.c */
static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
{
struct drm_i915_private *i915 = to_i915(obj->base.dev);
return i915->ggtt.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
i915_gem_object_is_tiled(obj);
}
u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size,
unsigned int tiling, unsigned int stride);
u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size,
unsigned int tiling, unsigned int stride);
const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
/* i915_cmd_parser.c */
int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
void intel_engine_init_cmd_parser(struct intel_engine_cs *engine);
void intel_engine_cleanup_cmd_parser(struct intel_engine_cs *engine);
int intel_engine_cmd_parser(struct intel_engine_cs *engine,
struct i915_vma *batch,
u32 batch_offset,
u32 batch_length,
struct i915_vma *shadow,
bool trampoline);
#define I915_CMD_PARSER_TRAMPOLINE_SIZE 8
/* intel_device_info.c */
static inline struct intel_device_info *
mkwrite_device_info(struct drm_i915_private *dev_priv)
{
return (struct intel_device_info *)INTEL_INFO(dev_priv);
}
int i915_reg_read_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
#define __I915_REG_OP(op__, dev_priv__, ...) \
intel_uncore_##op__(&(dev_priv__)->uncore, __VA_ARGS__)
#define I915_READ(reg__) __I915_REG_OP(read, dev_priv, (reg__))
#define I915_WRITE(reg__, val__) __I915_REG_OP(write, dev_priv, (reg__), (val__))
#define POSTING_READ(reg__) __I915_REG_OP(posting_read, dev_priv, (reg__))
/* These are untraced mmio-accessors that are only valid to be used inside
* critical sections, such as inside IRQ handlers, where forcewake is explicitly
* controlled.
*
* Think twice, and think again, before using these.
*
* As an example, these accessors can possibly be used between:
*
* spin_lock_irq(&dev_priv->uncore.lock);
* intel_uncore_forcewake_get__locked();
*
* and
*
* intel_uncore_forcewake_put__locked();
* spin_unlock_irq(&dev_priv->uncore.lock);
*
*
* Note: some registers may not need forcewake held, so
* intel_uncore_forcewake_{get,put} can be omitted, see
* intel_uncore_forcewake_for_reg().
*
* Certain architectures will die if the same cacheline is concurrently accessed
* by different clients (e.g. on Ivybridge). Access to registers should
* therefore generally be serialised, by either the dev_priv->uncore.lock or
* a more localised lock guarding all access to that bank of registers.
*/
#define I915_READ_FW(reg__) __I915_REG_OP(read_fw, dev_priv, (reg__))
#define I915_WRITE_FW(reg__, val__) __I915_REG_OP(write_fw, dev_priv, (reg__), (val__))
/* i915_mm.c */
int remap_io_mapping(struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn, unsigned long size,
struct io_mapping *iomap);
int remap_io_sg(struct vm_area_struct *vma,
unsigned long addr, unsigned long size,
struct scatterlist *sgl, resource_size_t iobase);
static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
{
if (INTEL_GEN(i915) >= 10)
return CNL_HWS_CSB_WRITE_INDEX;
else
return I915_HWS_CSB_WRITE_INDEX;
}
static inline enum i915_map_type
i915_coherent_map_type(struct drm_i915_private *i915)
{
return HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
}
static inline u64 i915_cs_timestamp_ns_to_ticks(struct drm_i915_private *i915, u64 val)
{
return DIV_ROUND_UP_ULL(val * RUNTIME_INFO(i915)->cs_timestamp_frequency_hz,
1000000000);
}
static inline u64 i915_cs_timestamp_ticks_to_ns(struct drm_i915_private *i915, u64 val)
{
return div_u64(val * 1000000000,
RUNTIME_INFO(i915)->cs_timestamp_frequency_hz);
}
#endif
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