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gerrit-public.fairphone.software / kernel / msm-4.19 / 1132d5e7b64445b3fa3cb982e6723e33318f7655 / . / drivers / gpu / drm / i915 / i915_drv.h
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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/hashtable.h>
#include <linux/intel-iommu.h>
#include <linux/kref.h>
#include <linux/pm_qos.h>
#include <linux/reservation.h>
#include <linux/shmem_fs.h>
#include <drm/drmP.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 "i915_params.h"
#include "i915_reg.h"
#include "i915_utils.h"
#include "intel_bios.h"
#include "intel_dpll_mgr.h"
#include "intel_uc.h"
#include "intel_lrc.h"
#include "intel_ringbuffer.h"
#include "i915_gem.h"
#include "i915_gem_context.h"
#include "i915_gem_fence_reg.h"
#include "i915_gem_object.h"
#include "i915_gem_gtt.h"
#include "i915_gem_render_state.h"
#include "i915_gem_request.h"
#include "i915_gem_timeline.h"
#include "i915_vma.h"
#include "intel_gvt.h"
/* General customization:
*/
#define DRIVER_NAME "i915"
#define DRIVER_DESC "Intel Graphics"
#define DRIVER_DATE "20170403"
#define DRIVER_TIMESTAMP 1491198738
/* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
* WARN_ON()) for hw state sanity checks to check for unexpected conditions
* which may not necessarily be a user visible problem. This will either
* WARN() or DRM_ERROR() depending on the verbose_checks moduleparam, to
* enable distros and users to tailor their preferred amount of i915 abrt
* spam.
*/
#define I915_STATE_WARN(condition, format...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
if (!WARN(i915.verbose_state_checks, format)) \
DRM_ERROR(format); \
unlikely(__ret_warn_on); \
})
#define I915_STATE_WARN_ON(x) \
I915_STATE_WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
bool __i915_inject_load_failure(const char *func, int line);
#define i915_inject_load_failure() \
__i915_inject_load_failure(__func__, __LINE__)
typedef struct {
uint32_t val;
} uint_fixed_16_16_t;
#define FP_16_16_MAX ({ \
uint_fixed_16_16_t fp; \
fp.val = UINT_MAX; \
fp; \
})
static inline uint_fixed_16_16_t u32_to_fixed_16_16(uint32_t val)
{
uint_fixed_16_16_t fp;
WARN_ON(val >> 16);
fp.val = val << 16;
return fp;
}
static inline uint32_t fixed_16_16_to_u32_round_up(uint_fixed_16_16_t fp)
{
return DIV_ROUND_UP(fp.val, 1 << 16);
}
static inline uint32_t fixed_16_16_to_u32(uint_fixed_16_16_t fp)
{
return fp.val >> 16;
}
static inline uint_fixed_16_16_t min_fixed_16_16(uint_fixed_16_16_t min1,
uint_fixed_16_16_t min2)
{
uint_fixed_16_16_t min;
min.val = min(min1.val, min2.val);
return min;
}
static inline uint_fixed_16_16_t max_fixed_16_16(uint_fixed_16_16_t max1,
uint_fixed_16_16_t max2)
{
uint_fixed_16_16_t max;
max.val = max(max1.val, max2.val);
return max;
}
static inline uint_fixed_16_16_t fixed_16_16_div_round_up(uint32_t val,
uint32_t d)
{
uint_fixed_16_16_t fp, res;
fp = u32_to_fixed_16_16(val);
res.val = DIV_ROUND_UP(fp.val, d);
return res;
}
static inline uint_fixed_16_16_t fixed_16_16_div_round_up_u64(uint32_t val,
uint32_t d)
{
uint_fixed_16_16_t res;
uint64_t interm_val;
interm_val = (uint64_t)val << 16;
interm_val = DIV_ROUND_UP_ULL(interm_val, d);
WARN_ON(interm_val >> 32);
res.val = (uint32_t) interm_val;
return res;
}
static inline uint_fixed_16_16_t mul_u32_fixed_16_16(uint32_t val,
uint_fixed_16_16_t mul)
{
uint64_t intermediate_val;
uint_fixed_16_16_t fp;
intermediate_val = (uint64_t) val * mul.val;
WARN_ON(intermediate_val >> 32);
fp.val = (uint32_t) intermediate_val;
return fp;
}
static inline const char *yesno(bool v)
{
return v ? "yes" : "no";
}
static inline const char *onoff(bool v)
{
return v ? "on" : "off";
}
static inline const char *enableddisabled(bool v)
{
return v ? "enabled" : "disabled";
}
enum pipe {
INVALID_PIPE = -1,
PIPE_A = 0,
PIPE_B,
PIPE_C,
_PIPE_EDP,
I915_MAX_PIPES = _PIPE_EDP
};
#define pipe_name(p) ((p) + 'A')
enum transcoder {
TRANSCODER_A = 0,
TRANSCODER_B,
TRANSCODER_C,
TRANSCODER_EDP,
TRANSCODER_DSI_A,
TRANSCODER_DSI_C,
I915_MAX_TRANSCODERS
};
static inline const char *transcoder_name(enum transcoder transcoder)
{
switch (transcoder) {
case TRANSCODER_A:
return "A";
case TRANSCODER_B:
return "B";
case TRANSCODER_C:
return "C";
case TRANSCODER_EDP:
return "EDP";
case TRANSCODER_DSI_A:
return "DSI A";
case TRANSCODER_DSI_C:
return "DSI C";
default:
return "<invalid>";
}
}
static inline bool transcoder_is_dsi(enum transcoder transcoder)
{
return transcoder == TRANSCODER_DSI_A || transcoder == TRANSCODER_DSI_C;
}
/*
* Global legacy plane identifier. Valid only for primary/sprite
* planes on pre-g4x, and only for primary planes on g4x+.
*/
enum plane {
PLANE_A,
PLANE_B,
PLANE_C,
};
#define plane_name(p) ((p) + 'A')
#define sprite_name(p, s) ((p) * INTEL_INFO(dev_priv)->num_sprites[(p)] + (s) + 'A')
/*
* Per-pipe plane identifier.
* I915_MAX_PLANES in the enum below is the maximum (across all platforms)
* number of planes per CRTC. Not all platforms really have this many planes,
* which means some arrays of size I915_MAX_PLANES may have unused entries
* between the topmost sprite plane and the cursor plane.
*
* This is expected to be passed to various register macros
* (eg. PLANE_CTL(), PS_PLANE_SEL(), etc.) so adjust with care.
*/
enum plane_id {
PLANE_PRIMARY,
PLANE_SPRITE0,
PLANE_SPRITE1,
PLANE_SPRITE2,
PLANE_CURSOR,
I915_MAX_PLANES,
};
#define for_each_plane_id_on_crtc(__crtc, __p) \
for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
for_each_if ((__crtc)->plane_ids_mask & BIT(__p))
enum port {
PORT_NONE = -1,
PORT_A = 0,
PORT_B,
PORT_C,
PORT_D,
PORT_E,
I915_MAX_PORTS
};
#define port_name(p) ((p) + 'A')
#define I915_NUM_PHYS_VLV 2
enum dpio_channel {
DPIO_CH0,
DPIO_CH1
};
enum dpio_phy {
DPIO_PHY0,
DPIO_PHY1,
DPIO_PHY2,
};
enum intel_display_power_domain {
POWER_DOMAIN_PIPE_A,
POWER_DOMAIN_PIPE_B,
POWER_DOMAIN_PIPE_C,
POWER_DOMAIN_PIPE_A_PANEL_FITTER,
POWER_DOMAIN_PIPE_B_PANEL_FITTER,
POWER_DOMAIN_PIPE_C_PANEL_FITTER,
POWER_DOMAIN_TRANSCODER_A,
POWER_DOMAIN_TRANSCODER_B,
POWER_DOMAIN_TRANSCODER_C,
POWER_DOMAIN_TRANSCODER_EDP,
POWER_DOMAIN_TRANSCODER_DSI_A,
POWER_DOMAIN_TRANSCODER_DSI_C,
POWER_DOMAIN_PORT_DDI_A_LANES,
POWER_DOMAIN_PORT_DDI_B_LANES,
POWER_DOMAIN_PORT_DDI_C_LANES,
POWER_DOMAIN_PORT_DDI_D_LANES,
POWER_DOMAIN_PORT_DDI_E_LANES,
POWER_DOMAIN_PORT_DDI_A_IO,
POWER_DOMAIN_PORT_DDI_B_IO,
POWER_DOMAIN_PORT_DDI_C_IO,
POWER_DOMAIN_PORT_DDI_D_IO,
POWER_DOMAIN_PORT_DDI_E_IO,
POWER_DOMAIN_PORT_DSI,
POWER_DOMAIN_PORT_CRT,
POWER_DOMAIN_PORT_OTHER,
POWER_DOMAIN_VGA,
POWER_DOMAIN_AUDIO,
POWER_DOMAIN_PLLS,
POWER_DOMAIN_AUX_A,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_AUX_D,
POWER_DOMAIN_GMBUS,
POWER_DOMAIN_MODESET,
POWER_DOMAIN_INIT,
POWER_DOMAIN_NUM,
};
#define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
#define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
((pipe) + POWER_DOMAIN_PIPE_A_PANEL_FITTER)
#define POWER_DOMAIN_TRANSCODER(tran) \
((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
(tran) + POWER_DOMAIN_TRANSCODER_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_NUM_PINS
};
#define for_each_hpd_pin(__pin) \
for ((__pin) = (HPD_NONE + 1); (__pin) < HPD_NUM_PINS; (__pin)++)
#define HPD_STORM_DEFAULT_THRESHOLD 5
struct i915_hotplug {
struct work_struct hotplug_work;
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;
struct delayed_work reenable_work;
struct intel_digital_port *irq_port[I915_MAX_PORTS];
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;
/*
* 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)
#define for_each_pipe(__dev_priv, __p) \
for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++)
#define for_each_pipe_masked(__dev_priv, __p, __mask) \
for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++) \
for_each_if ((__mask) & (1 << (__p)))
#define for_each_universal_plane(__dev_priv, __pipe, __p) \
for ((__p) = 0; \
(__p) < INTEL_INFO(__dev_priv)->num_sprites[(__pipe)] + 1; \
(__p)++)
#define for_each_sprite(__dev_priv, __p, __s) \
for ((__s) = 0; \
(__s) < INTEL_INFO(__dev_priv)->num_sprites[(__p)]; \
(__s)++)
#define for_each_port_masked(__port, __ports_mask) \
for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++) \
for_each_if ((__ports_mask) & (1 << (__port)))
#define for_each_crtc(dev, crtc) \
list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)
#define for_each_intel_plane(dev, intel_plane) \
list_for_each_entry(intel_plane, \
&(dev)->mode_config.plane_list, \
base.head)
#define for_each_intel_plane_mask(dev, intel_plane, plane_mask) \
list_for_each_entry(intel_plane, \
&(dev)->mode_config.plane_list, \
base.head) \
for_each_if ((plane_mask) & \
(1 << drm_plane_index(&intel_plane->base)))
#define for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) \
list_for_each_entry(intel_plane, \
&(dev)->mode_config.plane_list, \
base.head) \
for_each_if ((intel_plane)->pipe == (intel_crtc)->pipe)
#define for_each_intel_crtc(dev, intel_crtc) \
list_for_each_entry(intel_crtc, \
&(dev)->mode_config.crtc_list, \
base.head)
#define for_each_intel_crtc_mask(dev, intel_crtc, crtc_mask) \
list_for_each_entry(intel_crtc, \
&(dev)->mode_config.crtc_list, \
base.head) \
for_each_if ((crtc_mask) & (1 << drm_crtc_index(&intel_crtc->base)))
#define for_each_intel_encoder(dev, intel_encoder) \
list_for_each_entry(intel_encoder, \
&(dev)->mode_config.encoder_list, \
base.head)
#define for_each_intel_connector_iter(intel_connector, iter) \
while ((intel_connector = to_intel_connector(drm_connector_list_iter_next(iter))))
#define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
for_each_if ((intel_encoder)->base.crtc == (__crtc))
#define for_each_connector_on_encoder(dev, __encoder, intel_connector) \
list_for_each_entry((intel_connector), &(dev)->mode_config.connector_list, base.head) \
for_each_if ((intel_connector)->base.encoder == (__encoder))
#define for_each_power_domain(domain, mask) \
for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
for_each_if (BIT_ULL(domain) & (mask))
#define for_each_power_well(__dev_priv, __power_well) \
for ((__power_well) = (__dev_priv)->power_domains.power_wells; \
(__power_well) - (__dev_priv)->power_domains.power_wells < \
(__dev_priv)->power_domains.power_well_count; \
(__power_well)++)
#define for_each_power_well_rev(__dev_priv, __power_well) \
for ((__power_well) = (__dev_priv)->power_domains.power_wells + \
(__dev_priv)->power_domains.power_well_count - 1; \
(__power_well) - (__dev_priv)->power_domains.power_wells >= 0; \
(__power_well)--)
#define for_each_power_domain_well(__dev_priv, __power_well, __domain_mask) \
for_each_power_well(__dev_priv, __power_well) \
for_each_if ((__power_well)->domains & (__domain_mask))
#define for_each_power_domain_well_rev(__dev_priv, __power_well, __domain_mask) \
for_each_power_well_rev(__dev_priv, __power_well) \
for_each_if ((__power_well)->domains & (__domain_mask))
#define for_each_intel_plane_in_state(__state, plane, plane_state, __i) \
for ((__i) = 0; \
(__i) < (__state)->base.dev->mode_config.num_total_plane && \
((plane) = to_intel_plane((__state)->base.planes[__i].ptr), \
(plane_state) = to_intel_plane_state((__state)->base.planes[__i].state), 1); \
(__i)++) \
for_each_if (plane_state)
struct drm_i915_private;
struct i915_mm_struct;
struct i915_mmu_object;
struct drm_i915_file_private {
struct drm_i915_private *dev_priv;
struct drm_file *file;
struct {
spinlock_t lock;
struct list_head request_list;
/* 20ms is a fairly arbitrary limit (greater than the average frame time)
* chosen to prevent the CPU getting more than a frame ahead of the GPU
* (when using lax throttling for the frontbuffer). We also use it to
* offer free GPU waitboosts for severely congested workloads.
*/
#define DRM_I915_THROTTLE_JIFFIES msecs_to_jiffies(20)
} mm;
struct idr context_idr;
struct intel_rps_client {
struct list_head link;
unsigned boosts;
} rps;
unsigned int bsd_engine;
/* Client can have a maximum of 3 contexts banned before
* it is denied of creating new contexts. As one context
* ban needs 4 consecutive hangs, and more if there is
* progress in between, this is a last resort stop gap measure
* to limit the badly behaving clients access to gpu.
*/
#define I915_MAX_CLIENT_CONTEXT_BANS 3
int context_bans;
};
/* Used by dp and fdi links */
struct intel_link_m_n {
uint32_t tu;
uint32_t gmch_m;
uint32_t gmch_n;
uint32_t link_m;
uint32_t link_n;
};
void intel_link_compute_m_n(int bpp, int nlanes,
int pixel_clock, int link_clock,
struct intel_link_m_n *m_n,
bool reduce_m_n);
/* 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 opregion_header;
struct opregion_acpi;
struct opregion_swsci;
struct opregion_asle;
struct intel_opregion {
struct opregion_header *header;
struct opregion_acpi *acpi;
struct opregion_swsci *swsci;
u32 swsci_gbda_sub_functions;
u32 swsci_sbcb_sub_functions;
struct opregion_asle *asle;
void *rvda;
const void *vbt;
u32 vbt_size;
u32 *lid_state;
struct work_struct asle_work;
};
#define OPREGION_SIZE (8*1024)
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_crtc_state;
struct intel_initial_plane_config;
struct intel_crtc;
struct intel_limit;
struct dpll;
struct intel_cdclk_state;
struct drm_i915_display_funcs {
void (*get_cdclk)(struct drm_i915_private *dev_priv,
struct intel_cdclk_state *cdclk_state);
void (*set_cdclk)(struct drm_i915_private *dev_priv,
const struct intel_cdclk_state *cdclk_state);
int (*get_fifo_size)(struct drm_i915_private *dev_priv, int plane);
int (*compute_pipe_wm)(struct intel_crtc_state *cstate);
int (*compute_intermediate_wm)(struct drm_device *dev,
struct intel_crtc *intel_crtc,
struct intel_crtc_state *newstate);
void (*initial_watermarks)(struct intel_atomic_state *state,
struct intel_crtc_state *cstate);
void (*atomic_update_watermarks)(struct intel_atomic_state *state,
struct intel_crtc_state *cstate);
void (*optimize_watermarks)(struct intel_atomic_state *state,
struct intel_crtc_state *cstate);
int (*compute_global_watermarks)(struct drm_atomic_state *state);
void (*update_wm)(struct intel_crtc *crtc);
int (*modeset_calc_cdclk)(struct drm_atomic_state *state);
/* 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_crtc_state *pipe_config,
struct drm_atomic_state *old_state);
void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state);
void (*update_crtcs)(struct drm_atomic_state *state,
unsigned int *crtc_vblank_mask);
void (*audio_codec_enable)(struct drm_connector *connector,
struct intel_encoder *encoder,
const struct drm_display_mode *adjusted_mode);
void (*audio_codec_disable)(struct intel_encoder *encoder);
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);
int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags);
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 */
void (*load_csc_matrix)(struct drm_crtc_state *crtc_state);
void (*load_luts)(struct drm_crtc_state *crtc_state);
};
enum forcewake_domain_id {
FW_DOMAIN_ID_RENDER = 0,
FW_DOMAIN_ID_BLITTER,
FW_DOMAIN_ID_MEDIA,
FW_DOMAIN_ID_COUNT
};
enum forcewake_domains {
FORCEWAKE_RENDER = BIT(FW_DOMAIN_ID_RENDER),
FORCEWAKE_BLITTER = BIT(FW_DOMAIN_ID_BLITTER),
FORCEWAKE_MEDIA = BIT(FW_DOMAIN_ID_MEDIA),
FORCEWAKE_ALL = (FORCEWAKE_RENDER |
FORCEWAKE_BLITTER |
FORCEWAKE_MEDIA)
};
#define FW_REG_READ (1)
#define FW_REG_WRITE (2)
enum decoupled_power_domain {
GEN9_DECOUPLED_PD_BLITTER = 0,
GEN9_DECOUPLED_PD_RENDER,
GEN9_DECOUPLED_PD_MEDIA,
GEN9_DECOUPLED_PD_ALL
};
enum decoupled_ops {
GEN9_DECOUPLED_OP_WRITE = 0,
GEN9_DECOUPLED_OP_READ
};
enum forcewake_domains
intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv,
i915_reg_t reg, unsigned int op);
struct intel_uncore_funcs {
void (*force_wake_get)(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
void (*force_wake_put)(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
uint8_t (*mmio_readb)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
uint16_t (*mmio_readw)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
uint32_t (*mmio_readl)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
uint64_t (*mmio_readq)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
void (*mmio_writeb)(struct drm_i915_private *dev_priv,
i915_reg_t r, uint8_t val, bool trace);
void (*mmio_writew)(struct drm_i915_private *dev_priv,
i915_reg_t r, uint16_t val, bool trace);
void (*mmio_writel)(struct drm_i915_private *dev_priv,
i915_reg_t r, uint32_t val, bool trace);
};
struct intel_forcewake_range {
u32 start;
u32 end;
enum forcewake_domains domains;
};
struct intel_uncore {
spinlock_t lock; /** lock is also taken in irq contexts. */
const struct intel_forcewake_range *fw_domains_table;
unsigned int fw_domains_table_entries;
struct notifier_block pmic_bus_access_nb;
struct intel_uncore_funcs funcs;
unsigned fifo_count;
enum forcewake_domains fw_domains;
enum forcewake_domains fw_domains_active;
u32 fw_set;
u32 fw_clear;
u32 fw_reset;
struct intel_uncore_forcewake_domain {
enum forcewake_domain_id id;
enum forcewake_domains mask;
unsigned wake_count;
struct hrtimer timer;
i915_reg_t reg_set;
i915_reg_t reg_ack;
} fw_domain[FW_DOMAIN_ID_COUNT];
int unclaimed_mmio_check;
};
#define __mask_next_bit(mask) ({ \
int __idx = ffs(mask) - 1; \
mask &= ~BIT(__idx); \
__idx; \
})
/* Iterate over initialised fw domains */
#define for_each_fw_domain_masked(domain__, mask__, dev_priv__, tmp__) \
for (tmp__ = (mask__); \
tmp__ ? (domain__ = &(dev_priv__)->uncore.fw_domain[__mask_next_bit(tmp__)]), 1 : 0;)
#define for_each_fw_domain(domain__, dev_priv__, tmp__) \
for_each_fw_domain_masked(domain__, (dev_priv__)->uncore.fw_domains, dev_priv__, tmp__)
#define CSR_VERSION(major, minor) ((major) << 16 | (minor))
#define CSR_VERSION_MAJOR(version) ((version) >> 16)
#define CSR_VERSION_MINOR(version) ((version) & 0xffff)
struct intel_csr {
struct work_struct work;
const char *fw_path;
uint32_t *dmc_payload;
uint32_t dmc_fw_size;
uint32_t version;
uint32_t mmio_count;
i915_reg_t mmioaddr[8];
uint32_t mmiodata[8];
uint32_t dc_state;
uint32_t allowed_dc_mask;
};
#define DEV_INFO_FOR_EACH_FLAG(func) \
func(is_mobile); \
func(is_lp); \
func(is_alpha_support); \
/* Keep has_* in alphabetical order */ \
func(has_64bit_reloc); \
func(has_aliasing_ppgtt); \
func(has_csr); \
func(has_ddi); \
func(has_decoupled_mmio); \
func(has_dp_mst); \
func(has_fbc); \
func(has_fpga_dbg); \
func(has_full_ppgtt); \
func(has_full_48bit_ppgtt); \
func(has_gmbus_irq); \
func(has_gmch_display); \
func(has_guc); \
func(has_hotplug); \
func(has_hw_contexts); \
func(has_l3_dpf); \
func(has_llc); \
func(has_logical_ring_contexts); \
func(has_overlay); \
func(has_pipe_cxsr); \
func(has_pooled_eu); \
func(has_psr); \
func(has_rc6); \
func(has_rc6p); \
func(has_resource_streamer); \
func(has_runtime_pm); \
func(has_snoop); \
func(unfenced_needs_alignment); \
func(cursor_needs_physical); \
func(hws_needs_physical); \
func(overlay_needs_physical); \
func(supports_tv);
struct sseu_dev_info {
u8 slice_mask;
u8 subslice_mask;
u8 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
/* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
u8 subslice_7eu[3];
u8 has_slice_pg:1;
u8 has_subslice_pg:1;
u8 has_eu_pg:1;
};
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
return hweight8(sseu->slice_mask) * hweight8(sseu->subslice_mask);
}
/* Keep in gen based order, and chronological order within a gen */
enum intel_platform {
INTEL_PLATFORM_UNINITIALIZED = 0,
INTEL_I830,
INTEL_I845G,
INTEL_I85X,
INTEL_I865G,
INTEL_I915G,
INTEL_I915GM,
INTEL_I945G,
INTEL_I945GM,
INTEL_G33,
INTEL_PINEVIEW,
INTEL_I965G,
INTEL_I965GM,
INTEL_G45,
INTEL_GM45,
INTEL_IRONLAKE,
INTEL_SANDYBRIDGE,
INTEL_IVYBRIDGE,
INTEL_VALLEYVIEW,
INTEL_HASWELL,
INTEL_BROADWELL,
INTEL_CHERRYVIEW,
INTEL_SKYLAKE,
INTEL_BROXTON,
INTEL_KABYLAKE,
INTEL_GEMINILAKE,
INTEL_MAX_PLATFORMS
};
struct intel_device_info {
u32 display_mmio_offset;
u16 device_id;
u8 num_pipes;
u8 num_sprites[I915_MAX_PIPES];
u8 num_scalers[I915_MAX_PIPES];
u8 gen;
u16 gen_mask;
enum intel_platform platform;
u8 ring_mask; /* Rings supported by the HW */
u8 num_rings;
#define DEFINE_FLAG(name) u8 name:1
DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG);
#undef DEFINE_FLAG
u16 ddb_size; /* in blocks */
/* Register offsets for the various display pipes and transcoders */
int pipe_offsets[I915_MAX_TRANSCODERS];
int trans_offsets[I915_MAX_TRANSCODERS];
int palette_offsets[I915_MAX_PIPES];
int cursor_offsets[I915_MAX_PIPES];
/* Slice/subslice/EU info */
struct sseu_dev_info sseu;
struct color_luts {
u16 degamma_lut_size;
u16 gamma_lut_size;
} color;
};
struct intel_display_error_state;
struct i915_gpu_state {
struct kref ref;
struct timeval time;
struct timeval boottime;
struct timeval uptime;
struct drm_i915_private *i915;
char error_msg[128];
bool simulated;
bool awake;
bool wakelock;
bool suspended;
int iommu;
u32 reset_count;
u32 suspend_count;
struct intel_device_info device_info;
struct i915_params params;
/* Generic register state */
u32 eir;
u32 pgtbl_er;
u32 ier;
u32 gtier[4], ngtier;
u32 ccid;
u32 derrmr;
u32 forcewake;
u32 error; /* gen6+ */
u32 err_int; /* gen7 */
u32 fault_data0; /* gen8, gen9 */
u32 fault_data1; /* gen8, gen9 */
u32 done_reg;
u32 gac_eco;
u32 gam_ecochk;
u32 gab_ctl;
u32 gfx_mode;
u32 nfence;
u64 fence[I915_MAX_NUM_FENCES];
struct intel_overlay_error_state *overlay;
struct intel_display_error_state *display;
struct drm_i915_error_object *semaphore;
struct drm_i915_error_object *guc_log;
struct drm_i915_error_engine {
int engine_id;
/* Software tracked state */
bool waiting;
int num_waiters;
unsigned long hangcheck_timestamp;
bool hangcheck_stalled;
enum intel_engine_hangcheck_action hangcheck_action;
struct i915_address_space *vm;
int num_requests;
/* position of active request inside the ring */
u32 rq_head, rq_post, rq_tail;
/* our own tracking of ring head and tail */
u32 cpu_ring_head;
u32 cpu_ring_tail;
u32 last_seqno;
/* Register state */
u32 start;
u32 tail;
u32 head;
u32 ctl;
u32 mode;
u32 hws;
u32 ipeir;
u32 ipehr;
u32 bbstate;
u32 instpm;
u32 instps;
u32 seqno;
u64 bbaddr;
u64 acthd;
u32 fault_reg;
u64 faddr;
u32 rc_psmi; /* sleep state */
u32 semaphore_mboxes[I915_NUM_ENGINES - 1];
struct intel_instdone instdone;
struct drm_i915_error_context {
char comm[TASK_COMM_LEN];
pid_t pid;
u32 handle;
u32 hw_id;
int ban_score;
int active;
int guilty;
} context;
struct drm_i915_error_object {
u64 gtt_offset;
u64 gtt_size;
int page_count;
int unused;
u32 *pages[0];
} *ringbuffer, *batchbuffer, *wa_batchbuffer, *ctx, *hws_page;
struct drm_i915_error_object *wa_ctx;
struct drm_i915_error_request {
long jiffies;
pid_t pid;
u32 context;
int ban_score;
u32 seqno;
u32 head;
u32 tail;
} *requests, execlist[2];
struct drm_i915_error_waiter {
char comm[TASK_COMM_LEN];
pid_t pid;
u32 seqno;
} *waiters;
struct {
u32 gfx_mode;
union {
u64 pdp[4];
u32 pp_dir_base;
};
} vm_info;
} engine[I915_NUM_ENGINES];
struct drm_i915_error_buffer {
u32 size;
u32 name;
u32 rseqno[I915_NUM_ENGINES], wseqno;
u64 gtt_offset;
u32 read_domains;
u32 write_domain;
s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
u32 tiling:2;
u32 dirty:1;
u32 purgeable:1;
u32 userptr:1;
s32 engine:4;
u32 cache_level:3;
} *active_bo[I915_NUM_ENGINES], *pinned_bo;
u32 active_bo_count[I915_NUM_ENGINES], pinned_bo_count;
struct i915_address_space *active_vm[I915_NUM_ENGINES];
};
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 */
enum fb_op_origin {
ORIGIN_GTT,
ORIGIN_CPU,
ORIGIN_CS,
ORIGIN_FLIP,
ORIGIN_DIRTYFB,
};
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;
unsigned int visible_pipes_mask;
struct intel_crtc *crtc;
struct drm_mm_node compressed_fb;
struct drm_mm_node *compressed_llb;
bool false_color;
bool enabled;
bool active;
bool underrun_detected;
struct work_struct underrun_work;
struct intel_fbc_state_cache {
struct i915_vma *vma;
struct {
unsigned int mode_flags;
uint32_t hsw_bdw_pixel_rate;
} crtc;
struct {
unsigned int rotation;
int src_w;
int src_h;
bool visible;
} plane;
struct {
const struct drm_format_info *format;
unsigned int stride;
} fb;
} state_cache;
struct intel_fbc_reg_params {
struct i915_vma *vma;
struct {
enum pipe pipe;
enum plane plane;
unsigned int fence_y_offset;
} crtc;
struct {
const struct drm_format_info *format;
unsigned int stride;
} fb;
int cfb_size;
} params;
struct intel_fbc_work {
bool scheduled;
u32 scheduled_vblank;
struct work_struct work;
} work;
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;
bool sink_support;
bool source_ok;
struct intel_dp *enabled;
bool active;
struct delayed_work work;
unsigned busy_frontbuffer_bits;
bool psr2_support;
bool aux_frame_sync;
bool link_standby;
bool y_cord_support;
bool colorimetry_support;
bool alpm;
};
enum intel_pch {
PCH_NONE = 0, /* No PCH present */
PCH_IBX, /* Ibexpeak PCH */
PCH_CPT, /* Cougarpoint PCH */
PCH_LPT, /* Lynxpoint PCH */
PCH_SPT, /* Sunrisepoint PCH */
PCH_KBP, /* Kabypoint PCH */
PCH_NOP,
};
enum intel_sbi_destination {
SBI_ICLK,
SBI_MPHY,
};
#define QUIRK_PIPEA_FORCE (1<<0)
#define QUIRK_LVDS_SSC_DISABLE (1<<1)
#define QUIRK_INVERT_BRIGHTNESS (1<<2)
#define QUIRK_BACKLIGHT_PRESENT (1<<3)
#define QUIRK_PIPEB_FORCE (1<<4)
#define QUIRK_PIN_SWIZZLED_PAGES (1<<5)
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];
uint64_t saveFENCE[I915_MAX_NUM_FENCES];
u32 savePCH_PORT_HOTPLUG;
u16 saveGCDGMBUS;
};
struct vlv_s0ix_state {
/* GAM */
u32 wr_watermark;
u32 gfx_prio_ctrl;
u32 arb_mode;
u32 gfx_pend_tlb0;
u32 gfx_pend_tlb1;
u32 lra_limits[GEN7_LRA_LIMITS_REG_NUM];
u32 media_max_req_count;
u32 gfx_max_req_count;
u32 render_hwsp;
u32 ecochk;
u32 bsd_hwsp;
u32 blt_hwsp;
u32 tlb_rd_addr;
/* MBC */
u32 g3dctl;
u32 gsckgctl;
u32 mbctl;
/* GCP */
u32 ucgctl1;
u32 ucgctl3;
u32 rcgctl1;
u32 rcgctl2;
u32 rstctl;
u32 misccpctl;
/* GPM */
u32 gfxpause;
u32 rpdeuhwtc;
u32 rpdeuc;
u32 ecobus;
u32 pwrdwnupctl;
u32 rp_down_timeout;
u32 rp_deucsw;
u32 rcubmabdtmr;
u32 rcedata;
u32 spare2gh;
/* Display 1 CZ domain */
u32 gt_imr;
u32 gt_ier;
u32 pm_imr;
u32 pm_ier;
u32 gt_scratch[GEN7_GT_SCRATCH_REG_NUM];
/* GT SA CZ domain */
u32 tilectl;
u32 gt_fifoctl;
u32 gtlc_wake_ctrl;
u32 gtlc_survive;
u32 pmwgicz;
/* Display 2 CZ domain */
u32 gu_ctl0;
u32 gu_ctl1;
u32 pcbr;
u32 clock_gate_dis2;
};
struct intel_rps_ei {
ktime_t ktime;
u32 render_c0;
u32 media_c0;
};
struct intel_gen6_power_mgmt {
/*
* work, interrupts_enabled and pm_iir are protected by
* dev_priv->irq_lock
*/
struct work_struct work;
bool interrupts_enabled;
u32 pm_iir;
/* PM interrupt bits that should never be masked */
u32 pm_intrmsk_mbz;
/* Frequencies are stored in potentially platform dependent multiples.
* In other words, *_freq needs to be multiplied by X to be interesting.
* Soft limits are those which are used for the dynamic reclocking done
* by the driver (raise frequencies under heavy loads, and lower for
* lighter loads). Hard limits are those imposed by the hardware.
*
* A distinction is made for overclocking, which is never enabled by
* default, and is considered to be above the hard limit if it's
* possible at all.
*/
u8 cur_freq; /* Current frequency (cached, may not == HW) */
u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
u8 max_freq_softlimit; /* Max frequency permitted by the driver */
u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
u8 min_freq; /* AKA RPn. Minimum frequency */
u8 boost_freq; /* Frequency to request when wait boosting */
u8 idle_freq; /* Frequency to request when we are idle */
u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
u8 rp1_freq; /* "less than" RP0 power/freqency */
u8 rp0_freq; /* Non-overclocked max frequency. */
u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
u8 up_threshold; /* Current %busy required to uplock */
u8 down_threshold; /* Current %busy required to downclock */
int last_adj;
enum { LOW_POWER, BETWEEN, HIGH_POWER } power;
spinlock_t client_lock;
struct list_head clients;
bool client_boost;
bool enabled;
struct delayed_work autoenable_work;
unsigned boosts;
/* manual wa residency calculations */
struct intel_rps_ei ei;
/*
* Protects RPS/RC6 register access and PCU communication.
* Must be taken after struct_mutex if nested. Note that
* this lock may be held for long periods of time when
* talking to hw - so only take it when talking to hw!
*/
struct mutex hw_lock;
};
/* defined intel_pm.c */
extern spinlock_t mchdev_lock;
struct intel_ilk_power_mgmt {
u8 cur_delay;
u8 min_delay;
u8 max_delay;
u8 fmax;
u8 fstart;
u64 last_count1;
unsigned long last_time1;
unsigned long chipset_power;
u64 last_count2;
u64 last_time2;
unsigned long gfx_power;
u8 corr;
int c_m;
int r_t;
};
struct drm_i915_private;
struct i915_power_well;
struct i915_power_well_ops {
/*
* Synchronize the well's hw state to match the current sw state, for
* example enable/disable it based on the current refcount. Called
* during driver init and resume time, possibly after first calling
* the enable/disable handlers.
*/
void (*sync_hw)(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well);
/*
* Enable the well and resources that depend on it (for example
* interrupts located on the well). Called after the 0->1 refcount
* transition.
*/
void (*enable)(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well);
/*
* Disable the well and resources that depend on it. Called after
* the 1->0 refcount transition.
*/
void (*disable)(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well);
/* Returns the hw enabled state. */
bool (*is_enabled)(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well);
};
/* Power well structure for haswell */
struct i915_power_well {
const char *name;
bool always_on;
/* power well enable/disable usage count */
int count;
/* cached hw enabled state */
bool hw_enabled;
u64 domains;
/* unique identifier for this power well */
unsigned long id;
/*
* Arbitraty data associated with this power well. Platform and power
* well specific.
*/
unsigned long data;
const struct i915_power_well_ops *ops;
};
struct i915_power_domains {
/*
* Power wells needed for initialization at driver init and suspend
* time are on. They are kept on until after the first modeset.
*/
bool init_power_on;
bool initializing;
int power_well_count;
struct mutex lock;
int domain_use_count[POWER_DOMAIN_NUM];
struct i915_power_well *power_wells;
};
#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;
/** List of all objects in gtt_space. Used to restore gtt
* mappings on resume */
struct list_head bound_list;
/**
* List of objects which are not bound to the GTT (thus
* are idle and not used by the GPU). These objects may or may
* not actually have any pages attached.
*/
struct list_head unbound_list;
/** List of all objects in gtt_space, currently mmaped by userspace.
* All objects within this list must also be on bound_list.
*/
struct list_head userfault_list;
/**
* List of objects which are pending destruction.
*/
struct llist_head free_list;
struct work_struct free_work;
/** Usable portion of the GTT for GEM */
dma_addr_t stolen_base; /* limited to low memory (32-bit) */
/** PPGTT used for aliasing the PPGTT with the GTT */
struct i915_hw_ppgtt *aliasing_ppgtt;
struct notifier_block oom_notifier;
struct notifier_block vmap_notifier;
struct shrinker shrinker;
/** LRU list of objects with fence regs on them. */
struct list_head fence_list;
/**
* Are we in a non-interruptible section of code like
* modesetting?
*/
bool interruptible;
/* the indicator for dispatch video commands on two BSD rings */
atomic_t bsd_engine_dispatch_index;
/** Bit 6 swizzling required for X tiling */
uint32_t bit_6_swizzle_x;
/** Bit 6 swizzling required for Y tiling */
uint32_t bit_6_swizzle_y;
/* accounting, useful for userland debugging */
spinlock_t object_stat_lock;
u64 object_memory;
u32 object_count;
};
struct drm_i915_error_state_buf {
struct drm_i915_private *i915;
unsigned bytes;
unsigned size;
int err;
u8 *buf;
loff_t start;
loff_t pos;
};
#define I915_RESET_TIMEOUT (10 * HZ) /* 10s */
#define I915_FENCE_TIMEOUT (10 * HZ) /* 10s */
#define I915_ENGINE_DEAD_TIMEOUT (4 * HZ) /* Seqno, head and subunits dead */
#define I915_SEQNO_DEAD_TIMEOUT (12 * HZ) /* Seqno dead with active head */
struct i915_gpu_error {
/* For hangcheck timer */
#define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */
#define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)
struct delayed_work hangcheck_work;
/* For reset and error_state handling. */
spinlock_t lock;
/* Protected by the above dev->gpu_error.lock. */
struct i915_gpu_state *first_error;
unsigned long missed_irq_rings;
/**
* State variable controlling the reset flow and count
*
* This is a counter which gets incremented when reset is triggered,
*
* Before the reset commences, the I915_RESET_IN_PROGRESS bit is set
* meaning that any waiters holding onto the struct_mutex should
* relinquish the lock immediately in order for the reset to start.
*
* If reset is not completed succesfully, the I915_WEDGE bit is
* set meaning that hardware is terminally sour and there is no
* recovery. All waiters on the reset_queue will be woken when
* that happens.
*
* This counter is used by the wait_seqno code to notice that reset
* event happened and it needs to restart the entire ioctl (since most
* likely the seqno it waited for won't ever signal anytime soon).
*
* This is important for lock-free wait paths, where no contended lock
* naturally enforces the correct ordering between the bail-out of the
* waiter and the gpu reset work code.
*/
unsigned long reset_count;
/**
* flags: Control various stages of the GPU reset
*
* #I915_RESET_BACKOFF - When we start a reset, we want to stop any
* other users acquiring the struct_mutex. To do this we set the
* #I915_RESET_BACKOFF bit in the error flags when we detect a reset
* and then check for that bit before acquiring the struct_mutex (in
* i915_mutex_lock_interruptible()?). I915_RESET_BACKOFF serves a
* secondary role in preventing two concurrent global reset attempts.
*
* #I915_RESET_HANDOFF - To perform the actual GPU reset, we need the
* struct_mutex. We try to acquire the struct_mutex in the reset worker,
* but it may be held by some long running waiter (that we cannot
* interrupt without causing trouble). Once we are ready to do the GPU
* reset, we set the I915_RESET_HANDOFF bit and wakeup any waiters. If
* they already hold the struct_mutex and want to participate they can
* inspect the bit and do the reset directly, otherwise the worker
* waits for the struct_mutex.
*
* #I915_WEDGED - If reset fails and we can no longer use the GPU,
* we set the #I915_WEDGED bit. Prior to command submission, e.g.
* i915_gem_request_alloc(), this bit is checked and the sequence
* aborted (with -EIO reported to userspace) if set.
*/
unsigned long flags;
#define I915_RESET_BACKOFF 0
#define I915_RESET_HANDOFF 1
#define I915_WEDGED (BITS_PER_LONG - 1)
/**
* Waitqueue to signal when a hang is detected. Used to for waiters
* to release the struct_mutex for the reset to procede.
*/
wait_queue_head_t wait_queue;
/**
* Waitqueue to signal when the reset has completed. Used by clients
* that wait for dev_priv->mm.wedged to settle.
*/
wait_queue_head_t reset_queue;
/* For missed irq/seqno simulation. */
unsigned long test_irq_rings;
};
enum modeset_restore {
MODESET_ON_LID_OPEN,
MODESET_DONE,
MODESET_SUSPENDED,
};
#define DP_AUX_A 0x40
#define DP_AUX_B 0x10
#define DP_AUX_C 0x20
#define DP_AUX_D 0x30
#define DDC_PIN_B 0x05
#define DDC_PIN_C 0x04
#define DDC_PIN_D 0x06
struct ddi_vbt_port_info {
/*
* This is an index in the HDMI/DVI DDI buffer translation table.
* The special value HDMI_LEVEL_SHIFT_UNKNOWN means the VBT didn't
* populate this field.
*/
#define HDMI_LEVEL_SHIFT_UNKNOWN 0xff
uint8_t hdmi_level_shift;
uint8_t supports_dvi:1;
uint8_t supports_hdmi:1;
uint8_t supports_dp:1;
uint8_t supports_edp:1;
uint8_t alternate_aux_channel;
uint8_t alternate_ddc_pin;
uint8_t dp_boost_level;
uint8_t hdmi_boost_level;
};
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 lvds_vbt:1;
unsigned int int_crt_support:1;
unsigned int lvds_use_ssc: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 drrs_support_type drrs_type;
struct {
int rate;
int lanes;
int preemphasis;
int vswing;
bool low_vswing;
bool initialized;
bool support;
int bpp;
struct edp_power_seq pps;
} edp;
struct {
bool full_link;
bool require_aux_wakeup;
int idle_frames;
enum psr_lines_to_wait lines_to_wait;
int tp1_wakeup_time;
int tp2_tp3_wakeup_time;
} 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;
u8 seq_version;
u32 size;
u8 *data;
const u8 *sequence[MIPI_SEQ_MAX];
} dsi;
int crt_ddc_pin;
int child_dev_num;
union child_device_config *child_dev;
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 intel_wm_level {
bool enable;
uint32_t pri_val;
uint32_t spr_val;
uint32_t cur_val;
uint32_t fbc_val;
};
struct ilk_wm_values {
uint32_t wm_pipe[3];
uint32_t wm_lp[3];
uint32_t wm_lp_spr[3];
uint32_t wm_linetime[3];
bool enable_fbc_wm;
enum intel_ddb_partitioning partitioning;
};
struct vlv_pipe_wm {
uint16_t plane[I915_MAX_PLANES];
};
struct vlv_sr_wm {
uint16_t plane;
uint16_t cursor;
};
struct vlv_wm_ddl_values {
uint8_t plane[I915_MAX_PLANES];
};
struct vlv_wm_values {
struct vlv_pipe_wm pipe[3];
struct vlv_sr_wm sr;
struct vlv_wm_ddl_values ddl[3];
uint8_t level;
bool cxsr;
};
struct skl_ddb_entry {
uint16_t start, end; /* in number of blocks, 'end' is exclusive */
};
static inline uint16_t 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 skl_ddb_allocation {
struct skl_ddb_entry plane[I915_MAX_PIPES][I915_MAX_PLANES]; /* packed/uv */
struct skl_ddb_entry y_plane[I915_MAX_PIPES][I915_MAX_PLANES];
};
struct skl_wm_values {
unsigned dirty_pipes;
struct skl_ddb_allocation ddb;
};
struct skl_wm_level {
bool plane_en;
uint16_t plane_res_b;
uint8_t plane_res_l;
};
/*
* This struct helps tracking the state needed for runtime PM, which puts the
* device in PCI D3 state. Notice that when this happens, nothing on the
* graphics device works, even register access, so we don't get interrupts nor
* anything else.
*
* Every piece of our code that needs to actually touch the hardware needs to
* either call intel_runtime_pm_get or call intel_display_power_get with the
* appropriate power domain.
*
* Our driver uses the autosuspend delay feature, which means we'll only really
* suspend if we stay with zero refcount for a certain amount of time. The
* default value is currently very conservative (see intel_runtime_pm_enable), but
* it can be changed with the standard runtime PM files from sysfs.
*
* The irqs_disabled variable becomes true exactly after we disable the IRQs and
* goes back to false exactly before we reenable the IRQs. We use this variable
* to check if someone is trying to enable/disable IRQs while they're supposed
* to be disabled. This shouldn't happen and we'll print some error messages in
* case it happens.
*
* For more, read the Documentation/power/runtime_pm.txt.
*/
struct i915_runtime_pm {
atomic_t wakeref_count;
bool suspended;
bool irqs_enabled;
};
enum intel_pipe_crc_source {
INTEL_PIPE_CRC_SOURCE_NONE,
INTEL_PIPE_CRC_SOURCE_PLANE1,
INTEL_PIPE_CRC_SOURCE_PLANE2,
INTEL_PIPE_CRC_SOURCE_PF,
INTEL_PIPE_CRC_SOURCE_PIPE,
/* TV/DP on pre-gen5/vlv can't use the pipe source. */
INTEL_PIPE_CRC_SOURCE_TV,
INTEL_PIPE_CRC_SOURCE_DP_B,
INTEL_PIPE_CRC_SOURCE_DP_C,
INTEL_PIPE_CRC_SOURCE_DP_D,
INTEL_PIPE_CRC_SOURCE_AUTO,
INTEL_PIPE_CRC_SOURCE_MAX,
};
struct intel_pipe_crc_entry {
uint32_t frame;
uint32_t crc[5];
};
#define INTEL_PIPE_CRC_ENTRIES_NR 128
struct intel_pipe_crc {
spinlock_t lock;
bool opened; /* exclusive access to the result file */
struct intel_pipe_crc_entry *entries;
enum intel_pipe_crc_source source;
int head, tail;
wait_queue_head_t wq;
int skipped;
};
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_wa_reg {
i915_reg_t addr;
u32 value;
/* bitmask representing WA bits */
u32 mask;
};
/*
* RING_MAX_NONPRIV_SLOTS is per-engine but at this point we are only
* allowing it for RCS as we don't foresee any requirement of having
* a whitelist for other engines. When it is really required for
* other engines then the limit need to be increased.
*/
#define I915_MAX_WA_REGS (16 + RING_MAX_NONPRIV_SLOTS)
struct i915_workarounds {
struct i915_wa_reg reg[I915_MAX_WA_REGS];
u32 count;
u32 hw_whitelist_count[I915_NUM_ENGINES];
};
struct i915_virtual_gpu {
bool active;
};
/* used in computing the new watermarks state */
struct intel_wm_config {
unsigned int num_pipes_active;
bool sprites_enabled;
bool sprites_scaled;
};
struct i915_oa_format {
u32 format;
int size;
};
struct i915_oa_reg {
i915_reg_t addr;
u32 value;
};
struct i915_perf_stream;
/**
* struct i915_perf_stream_ops - the OPs to support a specific stream type
*/
struct i915_perf_stream_ops {
/**
* @enable: Enables the collection of HW samples, either in response to
* `I915_PERF_IOCTL_ENABLE` or implicitly called when stream is opened
* without `I915_PERF_FLAG_DISABLED`.
*/
void (*enable)(struct i915_perf_stream *stream);
/**
* @disable: Disables the collection of HW samples, either in response
* to `I915_PERF_IOCTL_DISABLE` or implicitly called before destroying
* the stream.
*/
void (*disable)(struct i915_perf_stream *stream);
/**
* @poll_wait: Call poll_wait, passing a wait queue that will be woken
* once there is something ready to read() for the stream
*/
void (*poll_wait)(struct i915_perf_stream *stream,
struct file *file,
poll_table *wait);
/**
* @wait_unlocked: For handling a blocking read, wait until there is
* something to ready to read() for the stream. E.g. wait on the same
* wait queue that would be passed to poll_wait().
*/
int (*wait_unlocked)(struct i915_perf_stream *stream);
/**
* @read: Copy buffered metrics as records to userspace
* **buf**: the userspace, destination buffer
* **count**: the number of bytes to copy, requested by userspace
* **offset**: zero at the start of the read, updated as the read
* proceeds, it represents how many bytes have been copied so far and
* the buffer offset for copying the next record.
*
* Copy as many buffered i915 perf samples and records for this stream
* to userspace as will fit in the given buffer.
*
* Only write complete records; returning -%ENOSPC if there isn't room
* for a complete record.
*
* Return any error condition that results in a short read such as
* -%ENOSPC or -%EFAULT, even though these may be squashed before
* returning to userspace.
*/
int (*read)(struct i915_perf_stream *stream,
char __user *buf,
size_t count,
size_t *offset);
/**
* @destroy: Cleanup any stream specific resources.
*
* The stream will always be disabled before this is called.
*/
void (*destroy)(struct i915_perf_stream *stream);
};
/**
* struct i915_perf_stream - state for a single open stream FD
*/
struct i915_perf_stream {
/**
* @dev_priv: i915 drm device
*/
struct drm_i915_private *dev_priv;
/**
* @link: Links the stream into ``&drm_i915_private->streams``
*/
struct list_head link;
/**
* @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
* properties given when opening a stream, representing the contents
* of a single sample as read() by userspace.
*/
u32 sample_flags;
/**
* @sample_size: Considering the configured contents of a sample
* combined with the required header size, this is the total size
* of a single sample record.
*/
int sample_size;
/**
* @ctx: %NULL if measuring system-wide across all contexts or a
* specific context that is being monitored.
*/
struct i915_gem_context *ctx;
/**
* @enabled: Whether the stream is currently enabled, considering
* whether the stream was opened in a disabled state and based
* on `I915_PERF_IOCTL_ENABLE` and `I915_PERF_IOCTL_DISABLE` calls.
*/
bool enabled;
/**
* @ops: The callbacks providing the implementation of this specific
* type of configured stream.
*/
const struct i915_perf_stream_ops *ops;
};
/**
* struct i915_oa_ops - Gen specific implementation of an OA unit stream
*/
struct i915_oa_ops {
/**
* @init_oa_buffer: Resets the head and tail pointers of the
* circular buffer for periodic OA reports.
*
* Called when first opening a stream for OA metrics, but also may be
* called in response to an OA buffer overflow or other error
* condition.
*
* Note it may be necessary to clear the full OA buffer here as part of
* maintaining the invariable that new reports must be written to
* zeroed memory for us to be able to reliable detect if an expected
* report has not yet landed in memory. (At least on Haswell the OA
* buffer tail pointer is not synchronized with reports being visible
* to the CPU)
*/
void (*init_oa_buffer)(struct drm_i915_private *dev_priv);
/**
* @enable_metric_set: Applies any MUX configuration to set up the
* Boolean and Custom (B/C) counters that are part of the counter
* reports being sampled. May apply system constraints such as
* disabling EU clock gating as required.
*/
int (*enable_metric_set)(struct drm_i915_private *dev_priv);
/**
* @disable_metric_set: Remove system constraints associated with using
* the OA unit.
*/
void (*disable_metric_set)(struct drm_i915_private *dev_priv);
/**
* @oa_enable: Enable periodic sampling
*/
void (*oa_enable)(struct drm_i915_private *dev_priv);
/**
* @oa_disable: Disable periodic sampling
*/
void (*oa_disable)(struct drm_i915_private *dev_priv);
/**
* @read: Copy data from the circular OA buffer into a given userspace
* buffer.
*/
int (*read)(struct i915_perf_stream *stream,
char __user *buf,
size_t count,
size_t *offset);
/**
* @oa_buffer_is_empty: Check if OA buffer empty (false positives OK)
*
* This is either called via fops or the poll check hrtimer (atomic
* ctx) without any locks taken.
*
* It's safe to read OA config state here unlocked, assuming that this
* is only called while the stream is enabled, while the global OA
* configuration can't be modified.
*
* Efficiency is more important than avoiding some false positives
* here, which will be handled gracefully - likely resulting in an
* %EAGAIN error for userspace.
*/
bool (*oa_buffer_is_empty)(struct drm_i915_private *dev_priv);
};
struct intel_cdclk_state {
unsigned int cdclk, vco, ref;
};
struct drm_i915_private {
struct drm_device drm;
struct kmem_cache *objects;
struct kmem_cache *vmas;
struct kmem_cache *requests;
struct kmem_cache *dependencies;
const struct intel_device_info info;
void __iomem *regs;
struct intel_uncore uncore;
struct i915_virtual_gpu vgpu;
struct intel_gvt *gvt;
struct intel_huc huc;
struct intel_guc guc;
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 the gmbus and gpio block.
*/
uint32_t gpio_mmio_base;
/* MMIO base address for MIPI regs */
uint32_t mipi_mmio_base;
uint32_t psr_mmio_base;
uint32_t pps_mmio_base;
wait_queue_head_t gmbus_wait_queue;
struct pci_dev *bridge_dev;
struct i915_gem_context *kernel_context;
struct intel_engine_cs *engine[I915_NUM_ENGINES];
struct i915_vma *semaphore;
struct drm_dma_handle *status_page_dmah;
struct resource mch_res;
/* protects the irq masks */
spinlock_t irq_lock;
/* protects the mmio flip data */
spinlock_t mmio_flip_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;
/** Cached value of IMR to avoid reads in updating the bitfield */
union {
u32 irq_mask;
u32 de_irq_mask[I915_MAX_PIPES];
};
u32 gt_irq_mask;
u32 pm_imr;
u32 pm_ier;
u32 pm_rps_events;
u32 pm_guc_events;
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;
/* LVDS info */
bool no_aux_handshake;
/* protects panel power sequencer state */
struct mutex pps_mutex;
struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
int num_fence_regs; /* 8 on pre-965, 16 otherwise */
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 rawclk_freq;
unsigned int hpll_freq;
unsigned int czclk_freq;
struct {
/*
* The current logical cdclk state.
* See intel_atomic_state.cdclk.logical
*
* For reading holding any crtc lock is sufficient,
* for writing must hold all of them.
*/
struct intel_cdclk_state logical;
/*
* The current actual cdclk state.
* See intel_atomic_state.cdclk.actual
*/
struct intel_cdclk_state actual;
/* The current hardware cdclk state */
struct intel_cdclk_state hw;
} cdclk;
/**
* 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;
/* Display functions */
struct drm_i915_display_funcs display;
/* PCH chipset type */
enum intel_pch pch_type;
unsigned short pch_id;
unsigned long quirks;
enum modeset_restore modeset_restore;
struct mutex modeset_restore_lock;
struct drm_atomic_state *modeset_restore_state;
struct drm_modeset_acquire_ctx reset_ctx;
struct list_head vm_list; /* Global list of all address spaces */
struct i915_ggtt ggtt; /* VM representing the global address space */
struct i915_gem_mm mm;
DECLARE_HASHTABLE(mm_structs, 7);
struct mutex mm_lock;
/* The hw wants to have a stable context identifier for the lifetime
* of the context (for OA, PASID, faults, etc). This is limited
* in execlists to 21 bits.
*/
struct ida context_hw_ida;
#define MAX_CONTEXT_HW_ID (1<<21) /* exclusive */
/* Kernel Modesetting */
struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
struct intel_crtc *pipe_to_crtc_mapping[I915_MAX_PIPES];
wait_queue_head_t pending_flip_queue;
#ifdef CONFIG_DEBUG_FS
struct intel_pipe_crc pipe_crc[I915_MAX_PIPES];
#endif
/* dpll and cdclk state is protected by connection_mutex */
int num_shared_dpll;
struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
const struct intel_dpll_mgr *dpll_mgr;
/*
* dpll_lock serializes intel_{prepare,enable,disable}_shared_dpll.
* Must be global rather than per dpll, because on some platforms
* plls share registers.
*/
struct mutex dpll_lock;
unsigned int active_crtcs;
unsigned int min_pixclk[I915_MAX_PIPES];
int dpio_phy_iosf_port[I915_NUM_PHYS_VLV];
struct i915_workarounds workarounds;
struct i915_frontbuffer_tracking fb_tracking;
struct intel_atomic_helper {
struct llist_head free_list;
struct work_struct free_work;
} atomic_helper;
u16 orig_clock;
bool mchbar_need_disable;
struct intel_l3_parity l3_parity;
/* Cannot be determined by PCIID. You must always read a register. */
u32 edram_cap;
/* gen6+ rps state */
struct intel_gen6_power_mgmt rps;
/* ilk-only ips/rps state. Everything in here is protected by the global
* mchdev_lock in intel_pm.c */
struct intel_ilk_power_mgmt ips;
struct i915_power_domains power_domains;
struct i915_psr psr;
struct i915_gpu_error gpu_error;
struct drm_i915_gem_object *vlv_pctx;
#ifdef CONFIG_DRM_FBDEV_EMULATION
/* list of fbdev register on this device */
struct intel_fbdev *fbdev;
struct work_struct fbdev_suspend_work;
#endif
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;
uint32_t hw_context_size;
struct list_head context_list;
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 suspended_to_idle;
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;
struct {
/*
* Raw watermark latency values:
* in 0.1us units for WM0,
* in 0.5us units for WM1+.
*/
/* primary */
uint16_t pri_latency[5];
/* sprite */
uint16_t spr_latency[5];
/* cursor */
uint16_t cur_latency[5];
/*
* Raw watermark memory latency values
* for SKL for all 8 levels
* in 1us units.
*/
uint16_t skl_latency[8];
/* current hardware state */
union {
struct ilk_wm_values hw;
struct skl_wm_values skl_hw;
struct vlv_wm_values vlv;
};
uint8_t max_level;
/*
* Should be held around atomic WM register writing; also
* protects * intel_crtc->wm.active and
* cstate->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).
*/
bool distrust_bios_wm;
} wm;
struct i915_runtime_pm pm;
struct {
bool initialized;
struct kobject *metrics_kobj;
struct ctl_table_header *sysctl_header;
struct mutex lock;
struct list_head streams;
spinlock_t hook_lock;
struct {
struct i915_perf_stream *exclusive_stream;
u32 specific_ctx_id;
struct hrtimer poll_check_timer;
wait_queue_head_t poll_wq;
bool pollin;
bool periodic;
int period_exponent;
int timestamp_frequency;
int tail_margin;
int metrics_set;
const struct i915_oa_reg *mux_regs;
int mux_regs_len;
const struct i915_oa_reg *b_counter_regs;
int b_counter_regs_len;
struct {
struct i915_vma *vma;
u8 *vaddr;
int format;
int format_size;
} oa_buffer;
u32 gen7_latched_oastatus1;
struct i915_oa_ops ops;
const struct i915_oa_format *oa_formats;
int n_builtin_sets;
} oa;
} perf;
/* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
struct {
void (*resume)(struct drm_i915_private *);
void (*cleanup_engine)(struct intel_engine_cs *engine);
struct list_head timelines;
struct i915_gem_timeline global_timeline;
u32 active_requests;
/**
* Is the GPU currently considered idle, or busy executing
* userspace requests? Whilst idle, we allow runtime power
* management to power down the hardware and display clocks.
* In order to reduce the effect on performance, there
* is a slight delay before we do so.
*/
bool awake;
/**
* We leave the user IRQ off as much as possible,
* but this means that requests will finish and never
* be retired once the system goes idle. Set a timer to
* fire periodically while the ring is running. When it
* fires, go retire requests.
*/
struct delayed_work retire_work;
/**
* When we detect an idle GPU, we want to turn on
* powersaving features. So once we see that there
* are no more requests outstanding and no more
* arrive within a small period of time, we fire
* off the idle_work.
*/
struct delayed_work idle_work;
ktime_t last_init_time;
} gt;
/* 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;
/*
* 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 to_i915(dev_get_drvdata(kdev));
}
static inline struct drm_i915_private *guc_to_i915(struct intel_guc *guc)
{
return container_of(guc, struct drm_i915_private, guc);
}
static inline struct drm_i915_private *huc_to_i915(struct intel_huc *huc)
{
return container_of(huc, struct drm_i915_private, huc);
}
/* 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__, dev_priv__, mask__, tmp__) \
for (tmp__ = mask__ & INTEL_INFO(dev_priv__)->ring_mask; \
tmp__ ? (engine__ = (dev_priv__)->engine[__mask_next_bit(tmp__)]), 1 : 0; )
enum hdmi_force_audio {
HDMI_AUDIO_OFF_DVI = -2, /* no aux data for HDMI-DVI converter */
HDMI_AUDIO_OFF, /* force turn off HDMI audio */
HDMI_AUDIO_AUTO, /* trust EDID */
HDMI_AUDIO_ON, /* force turn on HDMI audio */
};
#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_MAX_SPRITE_BITS_PER_PIPE 5
#define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
#define INTEL_FRONTBUFFER_PRIMARY(pipe) \
(1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
#define INTEL_FRONTBUFFER_CURSOR(pipe) \
(1 << (1 + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
#define INTEL_FRONTBUFFER_SPRITE(pipe, plane) \
(1 << (2 + plane + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
#define INTEL_FRONTBUFFER_OVERLAY(pipe) \
(1 << (2 + INTEL_MAX_SPRITE_BITS_PER_PIPE + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
#define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
(0xff << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
/*
* Optimised SGL iterator for GEM objects
*/
static __always_inline struct sgt_iter {
struct scatterlist *sgp;
union {
unsigned long pfn;
dma_addr_t dma;
};
unsigned int curr;
unsigned int max;
} __sgt_iter(struct scatterlist *sgl, bool dma) {
struct sgt_iter s = { .sgp = sgl };
if (s.sgp) {
s.max = s.curr = s.sgp->offset;
s.max += s.sgp->length;
if (dma)
s.dma = sg_dma_address(s.sgp);
else
s.pfn = page_to_pfn(sg_page(s.sgp));
}
return s;
}
static inline struct scatterlist *____sg_next(struct scatterlist *sg)
{
++sg;
if (unlikely(sg_is_chain(sg)))
sg = sg_chain_ptr(sg);
return sg;
}
/**
* __sg_next - return the next scatterlist entry in a list
* @sg: The current sg entry
*
* Description:
* If the entry is the last, return NULL; otherwise, step to the next
* element in the array (@sg@+1). If that's a chain pointer, follow it;
* otherwise just return the pointer to the current element.
**/
static inline struct scatterlist *__sg_next(struct scatterlist *sg)
{
#ifdef CONFIG_DEBUG_SG
BUG_ON(sg->sg_magic != SG_MAGIC);
#endif
return sg_is_last(sg) ? NULL : ____sg_next(sg);
}
/**
* for_each_sgt_dma - iterate over the DMA addresses of the given sg_table
* @__dmap: DMA address (output)
* @__iter: 'struct sgt_iter' (iterator state, internal)
* @__sgt: sg_table to iterate over (input)
*/
#define for_each_sgt_dma(__dmap, __iter, __sgt) \
for ((__iter) = __sgt_iter((__sgt)->sgl, true); \
((__dmap) = (__iter).dma + (__iter).curr); \
(((__iter).curr += PAGE_SIZE) < (__iter).max) || \
((__iter) = __sgt_iter(__sg_next((__iter).sgp), true), 0))
/**
* for_each_sgt_page - iterate over the pages of the given sg_table
* @__pp: page pointer (output)
* @__iter: 'struct sgt_iter' (iterator state, internal)
* @__sgt: sg_table to iterate over (input)
*/
#define for_each_sgt_page(__pp, __iter, __sgt) \
for ((__iter) = __sgt_iter((__sgt)->sgl, false); \
((__pp) = (__iter).pfn == 0 ? NULL : \
pfn_to_page((__iter).pfn + ((__iter).curr >> PAGE_SHIFT))); \
(((__iter).curr += PAGE_SIZE) < (__iter).max) || \
((__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0))
static inline const struct intel_device_info *
intel_info(const struct drm_i915_private *dev_priv)
{
return &dev_priv->info;
}
#define INTEL_INFO(dev_priv) intel_info((dev_priv))
#define INTEL_GEN(dev_priv) ((dev_priv)->info.gen)
#define INTEL_DEVID(dev_priv) ((dev_priv)->info.device_id)
#define REVID_FOREVER 0xff
#define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
#define GEN_FOREVER (0)
/*
* Returns true if Gen is in inclusive range [Start, End].
*
* Use GEN_FOREVER for unbound start and or end.
*/
#define IS_GEN(dev_priv, s, e) ({ \
unsigned int __s = (s), __e = (e); \
BUILD_BUG_ON(!__builtin_constant_p(s)); \
BUILD_BUG_ON(!__builtin_constant_p(e)); \
if ((__s) != GEN_FOREVER) \
__s = (s) - 1; \
if ((__e) == GEN_FOREVER) \
__e = BITS_PER_LONG - 1; \
else \
__e = (e) - 1; \
!!((dev_priv)->info.gen_mask & GENMASK((__e), (__s))); \
})
/*
* 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))
#define IS_I830(dev_priv) ((dev_priv)->info.platform == INTEL_I830)
#define IS_I845G(dev_priv) ((dev_priv)->info.platform == INTEL_I845G)
#define IS_I85X(dev_priv) ((dev_priv)->info.platform == INTEL_I85X)
#define IS_I865G(dev_priv) ((dev_priv)->info.platform == INTEL_I865G)
#define IS_I915G(dev_priv) ((dev_priv)->info.platform == INTEL_I915G)
#define IS_I915GM(dev_priv) ((dev_priv)->info.platform == INTEL_I915GM)
#define IS_I945G(dev_priv) ((dev_priv)->info.platform == INTEL_I945G)
#define IS_I945GM(dev_priv) ((dev_priv)->info.platform == INTEL_I945GM)
#define IS_I965G(dev_priv) ((dev_priv)->info.platform == INTEL_I965G)
#define IS_I965GM(dev_priv) ((dev_priv)->info.platform == INTEL_I965GM)
#define IS_G45(dev_priv) ((dev_priv)->info.platform == INTEL_G45)
#define IS_GM45(dev_priv) ((dev_priv)->info.platform == INTEL_GM45)
#define IS_G4X(dev_priv) (IS_G45(dev_priv) || IS_GM45(dev_priv))
#define IS_PINEVIEW_G(dev_priv) (INTEL_DEVID(dev_priv) == 0xa001)
#define IS_PINEVIEW_M(dev_priv) (INTEL_DEVID(dev_priv) == 0xa011)
#define IS_PINEVIEW(dev_priv) ((dev_priv)->info.platform == INTEL_PINEVIEW)
#define IS_G33(dev_priv) ((dev_priv)->info.platform == INTEL_G33)
#define IS_IRONLAKE_M(dev_priv) (INTEL_DEVID(dev_priv) == 0x0046)
#define IS_IVYBRIDGE(dev_priv) ((dev_priv)->info.platform == INTEL_IVYBRIDGE)
#define IS_IVB_GT1(dev_priv) (INTEL_DEVID(dev_priv) == 0x0156 || \
INTEL_DEVID(dev_priv) == 0x0152 || \
INTEL_DEVID(dev_priv) == 0x015a)
#define IS_VALLEYVIEW(dev_priv) ((dev_priv)->info.platform == INTEL_VALLEYVIEW)
#define IS_CHERRYVIEW(dev_priv) ((dev_priv)->info.platform == INTEL_CHERRYVIEW)
#define IS_HASWELL(dev_priv) ((dev_priv)->info.platform == INTEL_HASWELL)
#define IS_BROADWELL(dev_priv) ((dev_priv)->info.platform == INTEL_BROADWELL)
#define IS_SKYLAKE(dev_priv) ((dev_priv)->info.platform == INTEL_SKYLAKE)
#define IS_BROXTON(dev_priv) ((dev_priv)->info.platform == INTEL_BROXTON)
#define IS_KABYLAKE(dev_priv) ((dev_priv)->info.platform == INTEL_KABYLAKE)
#define IS_GEMINILAKE(dev_priv) ((dev_priv)->info.platform == INTEL_GEMINILAKE)
#define IS_MOBILE(dev_priv) ((dev_priv)->info.is_mobile)
#define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
#define IS_BDW_ULT(dev_priv) (IS_BROADWELL(dev_priv) && \
((INTEL_DEVID(dev_priv) & 0xf) == 0x6 || \
(INTEL_DEVID(dev_priv) & 0xf) == 0xb || \
(INTEL_DEVID(dev_priv) & 0xf) == 0xe))
/* ULX machines are also considered ULT. */
#define IS_BDW_ULX(dev_priv) (IS_BROADWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0xf) == 0xe)
#define IS_BDW_GT3(dev_priv) (IS_BROADWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
#define IS_HSW_ULT(dev_priv) (IS_HASWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0xFF00) == 0x0A00)
#define IS_HSW_GT3(dev_priv) (IS_HASWELL(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
/* ULX machines are also considered ULT. */
#define IS_HSW_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x0A0E || \
INTEL_DEVID(dev_priv) == 0x0A1E)
#define IS_SKL_ULT(dev_priv) (INTEL_DEVID(dev_priv) == 0x1906 || \
INTEL_DEVID(dev_priv) == 0x1913 || \
INTEL_DEVID(dev_priv) == 0x1916 || \
INTEL_DEVID(dev_priv) == 0x1921 || \
INTEL_DEVID(dev_priv) == 0x1926)
#define IS_SKL_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x190E || \
INTEL_DEVID(dev_priv) == 0x1915 || \
INTEL_DEVID(dev_priv) == 0x191E)
#define IS_KBL_ULT(dev_priv) (INTEL_DEVID(dev_priv) == 0x5906 || \
INTEL_DEVID(dev_priv) == 0x5913 || \
INTEL_DEVID(dev_priv) == 0x5916 || \
INTEL_DEVID(dev_priv) == 0x5921 || \
INTEL_DEVID(dev_priv) == 0x5926)
#define IS_KBL_ULX(dev_priv) (INTEL_DEVID(dev_priv) == 0x590E || \
INTEL_DEVID(dev_priv) == 0x5915 || \
INTEL_DEVID(dev_priv) == 0x591E)
#define IS_SKL_GT3(dev_priv) (IS_SKYLAKE(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0x00F0) == 0x0020)
#define IS_SKL_GT4(dev_priv) (IS_SKYLAKE(dev_priv) && \
(INTEL_DEVID(dev_priv) & 0x00F0) == 0x0030)
#define IS_ALPHA_SUPPORT(intel_info) ((intel_info)->is_alpha_support)
#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))
#define KBL_REVID_A0 0x0
#define KBL_REVID_B0 0x1
#define KBL_REVID_C0 0x2
#define KBL_REVID_D0 0x3
#define KBL_REVID_E0 0x4
#define IS_KBL_REVID(dev_priv, since, until) \
(IS_KABYLAKE(dev_priv) && IS_REVID(dev_priv, since, until))
#define GLK_REVID_A0 0x0
#define GLK_REVID_A1 0x1
#define IS_GLK_REVID(dev_priv, since, until) \
(IS_GEMINILAKE(dev_priv) && IS_REVID(dev_priv, since, until))
/*
* The genX designation typically refers to the render engine, so render
* capability related checks should use IS_GEN, while display and other checks
* have their own (e.g. HAS_PCH_SPLIT for ILK+ display, IS_foo for particular
* chips, etc.).
*/
#define IS_GEN2(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(1)))
#define IS_GEN3(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(2)))
#define IS_GEN4(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(3)))
#define IS_GEN5(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(4)))
#define IS_GEN6(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(5)))
#define IS_GEN7(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(6)))
#define IS_GEN8(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(7)))
#define IS_GEN9(dev_priv) (!!((dev_priv)->info.gen_mask & BIT(8)))
#define IS_LP(dev_priv) (INTEL_INFO(dev_priv)->is_lp)
#define IS_GEN9_LP(dev_priv) (IS_GEN9(dev_priv) && IS_LP(dev_priv))
#define IS_GEN9_BC(dev_priv) (IS_GEN9(dev_priv) && !IS_LP(dev_priv))
#define ENGINE_MASK(id) BIT(id)
#define RENDER_RING ENGINE_MASK(RCS)
#define BSD_RING ENGINE_MASK(VCS)
#define BLT_RING ENGINE_MASK(BCS)
#define VEBOX_RING ENGINE_MASK(VECS)
#define BSD2_RING ENGINE_MASK(VCS2)
#define ALL_ENGINES (~0)
#define HAS_ENGINE(dev_priv, id) \
(!!((dev_priv)->info.ring_mask & ENGINE_MASK(id)))
#define HAS_BSD(dev_priv) HAS_ENGINE(dev_priv, VCS)
#define HAS_BSD2(dev_priv) HAS_ENGINE(dev_priv, VCS2)
#define HAS_BLT(dev_priv) HAS_ENGINE(dev_priv, BCS)
#define HAS_VEBOX(dev_priv) HAS_ENGINE(dev_priv, VECS)
#define HAS_LLC(dev_priv) ((dev_priv)->info.has_llc)
#define HAS_SNOOP(dev_priv) ((dev_priv)->info.has_snoop)
#define HAS_EDRAM(dev_priv) (!!((dev_priv)->edram_cap & EDRAM_ENABLED))
#define HAS_WT(dev_priv) ((IS_HASWELL(dev_priv) || \
IS_BROADWELL(dev_priv)) && HAS_EDRAM(dev_priv))
#define HWS_NEEDS_PHYSICAL(dev_priv) ((dev_priv)->info.hws_needs_physical)
#define HAS_HW_CONTEXTS(dev_priv) ((dev_priv)->info.has_hw_contexts)
#define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
((dev_priv)->info.has_logical_ring_contexts)
#define USES_PPGTT(dev_priv) (i915.enable_ppgtt)
#define USES_FULL_PPGTT(dev_priv) (i915.enable_ppgtt >= 2)
#define USES_FULL_48BIT_PPGTT(dev_priv) (i915.enable_ppgtt == 3)
#define HAS_OVERLAY(dev_priv) ((dev_priv)->info.has_overlay)
#define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
((dev_priv)->info.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))
/* WaRsDisableCoarsePowerGating:skl,bxt */
#define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
(IS_SKL_GT3(dev_priv) || IS_SKL_GT4(dev_priv))
/*
* dp aux and gmbus irq on gen4 seems to be able to generate legacy interrupts
* even when in MSI mode. This results in spurious interrupt warnings if the
* legacy irq no. is shared with another device. The kernel then disables that
* interrupt source and so prevents the other device from working properly.
*/
#define HAS_AUX_IRQ(dev_priv) ((dev_priv)->info.gen >= 5)
#define HAS_GMBUS_IRQ(dev_priv) ((dev_priv)->info.has_gmbus_irq)
/* 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_GEN2(dev_priv) && \
!(IS_I915G(dev_priv) || \
IS_I915GM(dev_priv)))
#define SUPPORTS_TV(dev_priv) ((dev_priv)->info.supports_tv)
#define I915_HAS_HOTPLUG(dev_priv) ((dev_priv)->info.has_hotplug)
#define HAS_FW_BLC(dev_priv) (INTEL_GEN(dev_priv) > 2)
#define HAS_PIPE_CXSR(dev_priv) ((dev_priv)->info.has_pipe_cxsr)
#define HAS_FBC(dev_priv) ((dev_priv)->info.has_fbc)
#define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
#define HAS_DP_MST(dev_priv) ((dev_priv)->info.has_dp_mst)
#define HAS_DDI(dev_priv) ((dev_priv)->info.has_ddi)
#define HAS_FPGA_DBG_UNCLAIMED(dev_priv) ((dev_priv)->info.has_fpga_dbg)
#define HAS_PSR(dev_priv) ((dev_priv)->info.has_psr)
#define HAS_RC6(dev_priv) ((dev_priv)->info.has_rc6)
#define HAS_RC6p(dev_priv) ((dev_priv)->info.has_rc6p)
#define HAS_CSR(dev_priv) ((dev_priv)->info.has_csr)
#define HAS_RUNTIME_PM(dev_priv) ((dev_priv)->info.has_runtime_pm)
#define HAS_64BIT_RELOC(dev_priv) ((dev_priv)->info.has_64bit_reloc)
/*
* For now, anything with a GuC requires uCode loading, and then supports
* command submission once loaded. But these are logically independent
* properties, so we have separate macros to test them.
*/
#define HAS_GUC(dev_priv) ((dev_priv)->info.has_guc)
#define HAS_GUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
#define HAS_GUC_SCHED(dev_priv) (HAS_GUC(dev_priv))
#define HAS_HUC_UCODE(dev_priv) (HAS_GUC(dev_priv))
#define HAS_RESOURCE_STREAMER(dev_priv) ((dev_priv)->info.has_resource_streamer)
#define HAS_POOLED_EU(dev_priv) ((dev_priv)->info.has_pooled_eu)
#define INTEL_PCH_DEVICE_ID_MASK 0xff00
#define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
#define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
#define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
#define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
#define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
#define INTEL_PCH_SPT_DEVICE_ID_TYPE 0xA100
#define INTEL_PCH_SPT_LP_DEVICE_ID_TYPE 0x9D00
#define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA200
#define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
#define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
#define INTEL_PCH_QEMU_DEVICE_ID_TYPE 0x2900 /* qemu q35 has 2918 */
#define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
#define HAS_PCH_KBP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_KBP)
#define HAS_PCH_SPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_SPT)
#define HAS_PCH_LPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_LPT)
#define HAS_PCH_LPT_LP(dev_priv) \
((dev_priv)->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE)
#define HAS_PCH_LPT_H(dev_priv) \
((dev_priv)->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE)
#define HAS_PCH_CPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CPT)
#define HAS_PCH_IBX(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_IBX)
#define HAS_PCH_NOP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_NOP)
#define HAS_PCH_SPLIT(dev_priv) (INTEL_PCH_TYPE(dev_priv) != PCH_NONE)
#define HAS_GMCH_DISPLAY(dev_priv) ((dev_priv)->info.has_gmch_display)
#define HAS_LSPCON(dev_priv) (IS_GEN9(dev_priv))
/* DPF == dynamic parity feature */
#define HAS_L3_DPF(dev_priv) ((dev_priv)->info.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 HAS_DECOUPLED_MMIO(dev_priv) (INTEL_INFO(dev_priv)->has_decoupled_mmio)
#include "i915_trace.h"
static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
{
#ifdef CONFIG_INTEL_IOMMU
if (INTEL_GEN(dev_priv) >= 6 && intel_iommu_gfx_mapped)
return true;
#endif
return false;
}
static inline bool
intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
{
#ifdef CONFIG_INTEL_IOMMU
if (IS_BROXTON(dev_priv) && intel_iommu_gfx_mapped)
return true;
#endif
return false;
}
int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
int enable_ppgtt);
bool intel_sanitize_semaphores(struct drm_i915_private *dev_priv, int value);
/* i915_drv.c */
void __printf(3, 4)
__i915_printk(struct drm_i915_private *dev_priv, const char *level,
const char *fmt, ...);
#define i915_report_error(dev_priv, fmt, ...) \
__i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__)
#ifdef CONFIG_COMPAT
extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
#else
#define i915_compat_ioctl NULL
#endif
extern const struct dev_pm_ops i915_pm_ops;
extern int i915_driver_load(struct pci_dev *pdev,
const struct pci_device_id *ent);
extern void i915_driver_unload(struct drm_device *dev);
extern int intel_gpu_reset(struct drm_i915_private *dev_priv, u32 engine_mask);
extern bool intel_has_gpu_reset(struct drm_i915_private *dev_priv);
extern void i915_reset(struct drm_i915_private *dev_priv);
extern int intel_guc_reset(struct drm_i915_private *dev_priv);
extern void intel_engine_init_hangcheck(struct intel_engine_cs *engine);
extern void intel_hangcheck_init(struct drm_i915_private *dev_priv);
extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on);
int intel_engines_init_early(struct drm_i915_private *dev_priv);
int intel_engines_init(struct drm_i915_private *dev_priv);
/* intel_hotplug.c */
void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,
u32 pin_mask, u32 long_mask);
void intel_hpd_init(struct drm_i915_private *dev_priv);
void intel_hpd_init_work(struct drm_i915_private *dev_priv);
void intel_hpd_cancel_work(struct drm_i915_private *dev_priv);
bool intel_hpd_pin_to_port(enum hpd_pin pin, enum port *port);
bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin);
/* i915_irq.c */
static inline void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
{
unsigned long delay;
if (unlikely(!i915.enable_hangcheck))
return;
/* Don't continually defer the hangcheck so that it is always run at
* least once after work has been scheduled on any ring. Otherwise,
* we will ignore a hung ring if a second ring is kept busy.
*/
delay = round_jiffies_up_relative(DRM_I915_HANGCHECK_JIFFIES);
queue_delayed_work(system_long_wq,
&dev_priv->gpu_error.hangcheck_work, delay);
}
__printf(3, 4)
void i915_handle_error(struct drm_i915_private *dev_priv,
u32 engine_mask,
const char *fmt, ...);
extern void intel_irq_init(struct drm_i915_private *dev_priv);
int intel_irq_install(struct drm_i915_private *dev_priv);
void intel_irq_uninstall(struct drm_i915_private *dev_priv);
extern void intel_uncore_sanitize(struct drm_i915_private *dev_priv);
extern void intel_uncore_init(struct drm_i915_private *dev_priv);
extern bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv);
extern bool intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv);
extern void intel_uncore_fini(struct drm_i915_private *dev_priv);
extern void intel_uncore_suspend(struct drm_i915_private *dev_priv);
extern void intel_uncore_resume_early(struct drm_i915_private *dev_priv);
const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id);
void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
/* Like above but the caller must manage the uncore.lock itself.
* Must be used with I915_READ_FW and friends.
*/
void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv,
enum forcewake_domains domains);
u64 intel_uncore_edram_size(struct drm_i915_private *dev_priv);
void assert_forcewakes_inactive(struct drm_i915_private *dev_priv);
int intel_wait_for_register(struct drm_i915_private *dev_priv,
i915_reg_t reg,
const u32 mask,
const u32 value,
const unsigned long timeout_ms);
int intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
i915_reg_t reg,
const u32 mask,
const u32 value,
const unsigned long timeout_ms);
static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
{
return dev_priv->gvt;
}
static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
{
return dev_priv->vgpu.active;
}
void
i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
u32 status_mask);
void
i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
u32 status_mask);
void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
uint32_t mask,
uint32_t bits);
void ilk_update_display_irq(struct drm_i915_private *dev_priv,
uint32_t interrupt_mask,
uint32_t enabled_irq_mask);
static inline void
ilk_enable_display_irq(struct drm_i915_private *dev_priv, uint32_t bits)
{
ilk_update_display_irq(dev_priv, bits, bits);
}
static inline void
ilk_disable_display_irq(struct drm_i915_private *dev_priv, uint32_t bits)
{
ilk_update_display_irq(dev_priv, bits, 0);
}
void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
enum pipe pipe,
uint32_t interrupt_mask,
uint32_t enabled_irq_mask);
static inline void bdw_enable_pipe_irq(struct drm_i915_private *dev_priv,
enum pipe pipe, uint32_t bits)
{
bdw_update_pipe_irq(dev_priv, pipe, bits, bits);
}
static inline void bdw_disable_pipe_irq(struct drm_i915_private *dev_priv,
enum pipe pipe, uint32_t bits)
{
bdw_update_pipe_irq(dev_priv, pipe, bits, 0);
}
void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
uint32_t interrupt_mask,
uint32_t enabled_irq_mask);
static inline void
ibx_enable_display_interrupt(struct drm_i915_private *dev_priv, uint32_t bits)
{
ibx_display_interrupt_update(dev_priv, bits, bits);
}
static inline void
ibx_disable_display_interrupt(struct drm_i915_private *dev_priv, uint32_t bits)
{
ibx_display_interrupt_update(dev_priv, bits, 0);
}
/* i915_gem.c */
int i915_gem_create_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_pread_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_execbuffer(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_execbuffer2(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_busy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
int i915_gem_throttle_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
void i915_gem_init_userptr(struct drm_i915_private *dev_priv);
int i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
void i915_gem_sanitize(struct drm_i915_private *i915);
int i915_gem_load_init(struct drm_i915_private *dev_priv);
void i915_gem_load_cleanup(struct drm_i915_private *dev_priv);
void i915_gem_load_init_fences(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);
void *i915_gem_object_alloc(struct drm_i915_private *dev_priv);
void i915_gem_object_free(struct drm_i915_gem_object *obj);
void i915_gem_object_init(struct drm_i915_gem_object *obj,
const struct drm_i915_gem_object_ops *ops);
struct drm_i915_gem_object *
i915_gem_object_create(struct drm_i915_private *dev_priv, u64 size);
struct drm_i915_gem_object *
i915_gem_object_create_from_data(struct drm_i915_private *dev_priv,
const void *data, size_t size);
void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file);
void i915_gem_free_object(struct drm_gem_object *obj);
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.
*/
do {
rcu_barrier();
} while (flush_work(&i915->mm.free_work));
}
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);
int i915_gem_object_unbind(struct drm_i915_gem_object *obj);
void i915_gem_release_mmap(struct drm_i915_gem_object *obj);
void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv);
static inline int __sg_page_count(const struct scatterlist *sg)
{
return sg->length >> PAGE_SHIFT;
}
struct scatterlist *
i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
unsigned int n, unsigned int *offset);
struct page *
i915_gem_object_get_page(struct drm_i915_gem_object *obj,
unsigned int n);
struct page *
i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj,
unsigned int n);
dma_addr_t
i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
unsigned long n);
void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
struct sg_table *pages);
int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
static inline int __must_check
i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
{
might_lock(&obj->mm.lock);
if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
return 0;
return __i915_gem_object_get_pages(obj);
}
static inline void
__i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
{
GEM_BUG_ON(!obj->mm.pages);
atomic_inc(&obj->mm.pages_pin_count);
}
static inline bool
i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
{
return atomic_read(&obj->mm.pages_pin_count);
}
static inline void
__i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
{
GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
GEM_BUG_ON(!obj->mm.pages);
atomic_dec(&obj->mm.pages_pin_count);
}
static inline void
i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
{
__i915_gem_object_unpin_pages(obj);
}
enum i915_mm_subclass { /* lockdep subclass for obj->mm.lock */
I915_MM_NORMAL = 0,
I915_MM_SHRINKER
};
void __i915_gem_object_put_pages(struct drm_i915_gem_object *obj,
enum i915_mm_subclass subclass);
void __i915_gem_object_invalidate(struct drm_i915_gem_object *obj);
enum i915_map_type {
I915_MAP_WB = 0,
I915_MAP_WC,
};
/**
* i915_gem_object_pin_map - return a contiguous mapping of the entire object
* @obj: the object to map into kernel address space
* @type: the type of mapping, used to select pgprot_t
*
* Calls i915_gem_object_pin_pages() to prevent reaping of the object's
* pages and then returns a contiguous mapping of the backing storage into
* the kernel address space. Based on the @type of mapping, the PTE will be
* set to either WriteBack or WriteCombine (via pgprot_t).
*
* The caller is responsible for calling i915_gem_object_unpin_map() when the
* mapping is no longer required.
*
* Returns the pointer through which to access the mapped object, or an
* ERR_PTR() on error.
*/
void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
enum i915_map_type type);
/**
* i915_gem_object_unpin_map - releases an earlier mapping
* @obj: the object to unmap
*
* After pinning the object and mapping its pages, once you are finished
* with your access, call i915_gem_object_unpin_map() to release the pin
* upon the mapping. Once the pin count reaches zero, that mapping may be
* removed.
*/
static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
{
i915_gem_object_unpin_pages(obj);
}
int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
unsigned int *needs_clflush);
int i915_gem_obj_prepare_shmem_write(struct drm_i915_gem_object *obj,
unsigned int *needs_clflush);
#define CLFLUSH_BEFORE BIT(0)
#define CLFLUSH_AFTER BIT(1)
#define CLFLUSH_FLAGS (CLFLUSH_BEFORE | CLFLUSH_AFTER)
static inline void
i915_gem_obj_finish_shmem_access(struct drm_i915_gem_object *obj)
{
i915_gem_object_unpin_pages(obj);
}
int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
void i915_vma_move_to_active(struct i915_vma *vma,
struct drm_i915_gem_request *req,
unsigned int flags);
int i915_gem_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
int i915_gem_mmap_gtt(struct drm_file *file_priv, struct drm_device *dev,
uint32_t handle, uint64_t *offset);
int i915_gem_mmap_gtt_version(void);
void i915_gem_track_fb(struct drm_i915_gem_object *old,
struct drm_i915_gem_object *new,
unsigned frontbuffer_bits);
int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
struct drm_i915_gem_request *
i915_gem_find_active_request(struct intel_engine_cs *engine);
void i915_gem_retire_requests(struct drm_i915_private *dev_priv);
static inline bool i915_reset_backoff(struct i915_gpu_error *error)
{
return unlikely(test_bit(I915_RESET_BACKOFF, &error->flags));
}
static inline bool i915_reset_handoff(struct i915_gpu_error *error)
{
return unlikely(test_bit(I915_RESET_HANDOFF, &error->flags));
}
static inline bool i915_terminally_wedged(struct i915_gpu_error *error)
{
return unlikely(test_bit(I915_WEDGED, &error->flags));
}
static inline bool i915_reset_backoff_or_wedged(struct i915_gpu_error *error)
{
return i915_reset_backoff(error) | i915_terminally_wedged(error);
}
static inline u32 i915_reset_count(struct i915_gpu_error *error)
{
return READ_ONCE(error->reset_count);
}
int i915_gem_reset_prepare(struct drm_i915_private *dev_priv);
void i915_gem_reset(struct drm_i915_private *dev_priv);
void i915_gem_reset_finish(struct drm_i915_private *dev_priv);
void i915_gem_set_wedged(struct drm_i915_private *dev_priv);
bool i915_gem_unset_wedged(struct drm_i915_private *dev_priv);
void i915_gem_init_mmio(struct drm_i915_private *i915);
int __must_check i915_gem_init(struct drm_i915_private *dev_priv);
int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv);
void i915_gem_init_swizzling(struct drm_i915_private *dev_priv);
void i915_gem_cleanup_engines(struct drm_i915_private *dev_priv);
int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
unsigned int flags);
int __must_check i915_gem_suspend(struct drm_i915_private *dev_priv);
void i915_gem_resume(struct drm_i915_private *dev_priv);
int i915_gem_fault(struct vm_fault *vmf);
int i915_gem_object_wait(struct drm_i915_gem_object *obj,
unsigned int flags,
long timeout,
struct intel_rps_client *rps);
int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
unsigned int flags,
int priority);
#define I915_PRIORITY_DISPLAY I915_PRIORITY_MAX
int __must_check
i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,
bool write);
int __must_check
i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
struct i915_vma * __must_check
i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
u32 alignment,
const struct i915_ggtt_view *view);
void i915_gem_object_unpin_from_display_plane(struct i915_vma *vma);
int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
int align);
int i915_gem_open(struct drm_device *dev, struct drm_file *file);
void i915_gem_release(struct drm_device *dev, 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_device *dev,
struct drm_gem_object *gem_obj, int flags);
static inline struct i915_hw_ppgtt *
i915_vm_to_ppgtt(struct i915_address_space *vm)
{
return container_of(vm, struct i915_hw_ppgtt, base);
}
/* i915_gem_fence_reg.c */
int __must_check i915_vma_get_fence(struct i915_vma *vma);
int __must_check i915_vma_put_fence(struct i915_vma *vma);
void i915_gem_revoke_fences(struct drm_i915_private *dev_priv);
void i915_gem_restore_fences(struct drm_i915_private *dev_priv);
void i915_gem_detect_bit_6_swizzle(struct drm_i915_private *dev_priv);
void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj,
struct sg_table *pages);
void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj,
struct sg_table *pages);
static inline struct i915_gem_context *
i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
{
struct i915_gem_context *ctx;
lockdep_assert_held(&file_priv->dev_priv->drm.struct_mutex);
ctx = idr_find(&file_priv->context_idr, id);
if (!ctx)
return ERR_PTR(-ENOENT);
return ctx;
}
static inline struct i915_gem_context *
i915_gem_context_get(struct i915_gem_context *ctx)
{
kref_get(&ctx->ref);
return ctx;
}
static inline void i915_gem_context_put(struct i915_gem_context *ctx)
{
lockdep_assert_held(&ctx->i915->drm.struct_mutex);
kref_put(&ctx->ref, i915_gem_context_free);
}
static inline void i915_gem_context_put_unlocked(struct i915_gem_context *ctx)
{
struct mutex *lock = &ctx->i915->drm.struct_mutex;
if (kref_put_mutex(&ctx->ref, i915_gem_context_free, lock))
mutex_unlock(lock);
}
static inline struct intel_timeline *
i915_gem_context_lookup_timeline(struct i915_gem_context *ctx,
struct intel_engine_cs *engine)
{
struct i915_address_space *vm;
vm = ctx->ppgtt ? &ctx->ppgtt->base : &ctx->i915->ggtt.base;
return &vm->timeline.engine[engine->id];
}
int i915_perf_open_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
/* i915_gem_evict.c */
int __must_check i915_gem_evict_something(struct i915_address_space *vm,
u64 min_size, u64 alignment,
unsigned cache_level,
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, bool do_idle);
/* belongs in i915_gem_gtt.h */
static inline void i915_gem_chipset_flush(struct drm_i915_private *dev_priv)
{
wmb();
if (INTEL_GEN(dev_priv) < 6)
intel_gtt_chipset_flush();
}
/* i915_gem_stolen.c */
int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv,
struct drm_mm_node *node, u64 size,
unsigned alignment);
int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
struct drm_mm_node *node, u64 size,
unsigned alignment, u64 start,
u64 end);
void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
struct drm_mm_node *node);
int i915_gem_init_stolen(struct drm_i915_private *dev_priv);
void i915_gem_cleanup_stolen(struct drm_device *dev);
struct drm_i915_gem_object *
i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, u32 size);
struct drm_i915_gem_object *
i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv,
u32 stolen_offset,
u32 gtt_offset,
u32 size);
/* 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_shrinker.c */
unsigned long i915_gem_shrink(struct drm_i915_private *dev_priv,
unsigned long target,
unsigned flags);
#define I915_SHRINK_PURGEABLE 0x1
#define I915_SHRINK_UNBOUND 0x2
#define I915_SHRINK_BOUND 0x4
#define I915_SHRINK_ACTIVE 0x8
#define I915_SHRINK_VMAPS 0x10
unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv);
void i915_gem_shrinker_init(struct drm_i915_private *dev_priv);
void i915_gem_shrinker_cleanup(struct drm_i915_private *dev_priv);
/* i915_gem_tiling.c */
static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
{
struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
return dev_priv->mm.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);
/* i915_debugfs.c */
#ifdef CONFIG_DEBUG_FS
int i915_debugfs_register(struct drm_i915_private *dev_priv);
int i915_debugfs_connector_add(struct drm_connector *connector);
void intel_display_crc_init(struct drm_i915_private *dev_priv);
#else
static inline int i915_debugfs_register(struct drm_i915_private *dev_priv) {return 0;}
static inline int i915_debugfs_connector_add(struct drm_connector *connector)
{ return 0; }
static inline void intel_display_crc_init(struct drm_i915_private *dev_priv) {}
#endif
/* i915_gpu_error.c */
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
__printf(2, 3)
void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...);
int i915_error_state_to_str(struct drm_i915_error_state_buf *estr,
const struct i915_gpu_state *gpu);
int i915_error_state_buf_init(struct drm_i915_error_state_buf *eb,
struct drm_i915_private *i915,
size_t count, loff_t pos);
static inline void i915_error_state_buf_release(
struct drm_i915_error_state_buf *eb)
{
kfree(eb->buf);
}
struct i915_gpu_state *i915_capture_gpu_state(struct drm_i915_private *i915);
void i915_capture_error_state(struct drm_i915_private *dev_priv,
u32 engine_mask,
const char *error_msg);
static inline struct i915_gpu_state *
i915_gpu_state_get(struct i915_gpu_state *gpu)
{
kref_get(&gpu->ref);
return gpu;
}
void __i915_gpu_state_free(struct kref *kref);
static inline void i915_gpu_state_put(struct i915_gpu_state *gpu)
{
if (gpu)
kref_put(&gpu->ref, __i915_gpu_state_free);
}
struct i915_gpu_state *i915_first_error_state(struct drm_i915_private *i915);
void i915_reset_error_state(struct drm_i915_private *i915);
#else
static inline void i915_capture_error_state(struct drm_i915_private *dev_priv,
u32 engine_mask,
const char *error_msg)
{
}
static inline struct i915_gpu_state *
i915_first_error_state(struct drm_i915_private *i915)
{
return NULL;
}
static inline void i915_reset_error_state(struct drm_i915_private *i915)
{
}
#endif
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 drm_i915_gem_object *batch_obj,
struct drm_i915_gem_object *shadow_batch_obj,
u32 batch_start_offset,
u32 batch_len,
bool is_master);
/* i915_perf.c */
extern void i915_perf_init(struct drm_i915_private *dev_priv);
extern void i915_perf_fini(struct drm_i915_private *dev_priv);
extern void i915_perf_register(struct drm_i915_private *dev_priv);
extern void i915_perf_unregister(struct drm_i915_private *dev_priv);
/* i915_suspend.c */
extern int i915_save_state(struct drm_i915_private *dev_priv);
extern int i915_restore_state(struct drm_i915_private *dev_priv);
/* i915_sysfs.c */
void i915_setup_sysfs(struct drm_i915_private *dev_priv);
void i915_teardown_sysfs(struct drm_i915_private *dev_priv);
/* intel_lpe_audio.c */
int intel_lpe_audio_init(struct drm_i915_private *dev_priv);
void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
void *eld, int port, int pipe, int tmds_clk_speed,
bool dp_output, int link_rate);
/* intel_i2c.c */
extern int intel_setup_gmbus(struct drm_i915_private *dev_priv);
extern void intel_teardown_gmbus(struct drm_i915_private *dev_priv);
extern bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
unsigned int pin);
extern struct i2c_adapter *
intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)
{
return container_of(adapter, struct intel_gmbus, adapter)->force_bit;
}
extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
/* intel_bios.c */
void intel_bios_init(struct drm_i915_private *dev_priv);
bool intel_bios_is_valid_vbt(const void *buf, size_t size);
bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
enum port port);
bool intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv,
enum port port);
/* intel_opregion.c */
#ifdef CONFIG_ACPI
extern int intel_opregion_setup(struct drm_i915_private *dev_priv);
extern void intel_opregion_register(struct drm_i915_private *dev_priv);
extern void intel_opregion_unregister(struct drm_i915_private *dev_priv);
extern void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
bool enable);
extern int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
pci_power_t state);
extern int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
#else
static inline int intel_opregion_setup(struct drm_i915_private *dev) { return 0; }
static inline void intel_opregion_register(struct drm_i915_private *dev_priv) { }
static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv) { }
static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
{
}
static inline int
intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
{
return 0;
}
static inline int
intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
{
return 0;
}
static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
{
return -ENODEV;
}
#endif
/* intel_acpi.c */
#ifdef CONFIG_ACPI
extern void intel_register_dsm_handler(void);
extern void intel_unregister_dsm_handler(void);
#else
static inline void intel_register_dsm_handler(void) { return; }
static inline void intel_unregister_dsm_handler(void) { return; }
#endif /* CONFIG_ACPI */
/* intel_device_info.c */
static inline struct intel_device_info *
mkwrite_device_info(struct drm_i915_private *dev_priv)
{
return (struct intel_device_info *)&dev_priv->info;
}
const char *intel_platform_name(enum intel_platform platform);
void intel_device_info_runtime_init(struct drm_i915_private *dev_priv);
void intel_device_info_dump(struct drm_i915_private *dev_priv);
/* modesetting */
extern void intel_modeset_init_hw(struct drm_device *dev);
extern int intel_modeset_init(struct drm_device *dev);
extern void intel_modeset_gem_init(struct drm_device *dev);
extern void intel_modeset_cleanup(struct drm_device *dev);
extern int intel_connector_register(struct drm_connector *);
extern void intel_connector_unregister(struct drm_connector *);
extern int intel_modeset_vga_set_state(struct drm_i915_private *dev_priv,
bool state);
extern void intel_display_resume(struct drm_device *dev);
extern void i915_redisable_vga(struct drm_i915_private *dev_priv);
extern void i915_redisable_vga_power_on(struct drm_i915_private *dev_priv);
extern bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val);
extern void intel_init_pch_refclk(struct drm_i915_private *dev_priv);
extern int intel_set_rps(struct drm_i915_private *dev_priv, u8 val);
extern bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv,
bool enable);
int i915_reg_read_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
/* overlay */
extern struct intel_overlay_error_state *
intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
struct intel_overlay_error_state *error);
extern struct intel_display_error_state *
intel_display_capture_error_state(struct drm_i915_private *dev_priv);
extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
struct intel_display_error_state *error);
int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val);
int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
u32 reply_mask, u32 reply, int timeout_base_ms);
/* intel_sideband.c */
u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
enum intel_sbi_destination destination);
void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
enum intel_sbi_destination destination);
u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
/* intel_dpio_phy.c */
void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
enum dpio_phy *phy, enum dpio_channel *ch);
void bxt_ddi_phy_set_signal_level(struct drm_i915_private *dev_priv,
enum port port, u32 margin, u32 scale,
u32 enable, u32 deemphasis);
void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
enum dpio_phy phy);
bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
enum dpio_phy phy);
uint8_t bxt_ddi_phy_calc_lane_lat_optim_mask(struct intel_encoder *encoder,
uint8_t lane_count);
void bxt_ddi_phy_set_lane_optim_mask(struct intel_encoder *encoder,
uint8_t lane_lat_optim_mask);
uint8_t bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder *encoder);
void chv_set_phy_signal_level(struct intel_encoder *encoder,
u32 deemph_reg_value, u32 margin_reg_value,
bool uniq_trans_scale);
void chv_data_lane_soft_reset(struct intel_encoder *encoder,
bool reset);
void chv_phy_pre_pll_enable(struct intel_encoder *encoder);
void chv_phy_pre_encoder_enable(struct intel_encoder *encoder);
void chv_phy_release_cl2_override(struct intel_encoder *encoder);
void chv_phy_post_pll_disable(struct intel_encoder *encoder);
void vlv_set_phy_signal_level(struct intel_encoder *encoder,
u32 demph_reg_value, u32 preemph_reg_value,
u32 uniqtranscale_reg_value, u32 tx3_demph);
void vlv_phy_pre_pll_enable(struct intel_encoder *encoder);
void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder);
void vlv_phy_reset_lanes(struct intel_encoder *encoder);
int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
u64 intel_rc6_residency_us(struct drm_i915_private *dev_priv,
const i915_reg_t reg);
#define I915_READ8(reg) dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true)
#define I915_WRITE8(reg, val) dev_priv->uncore.funcs.mmio_writeb(dev_priv, (reg), (val), true)
#define I915_READ16(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), true)
#define I915_WRITE16(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), true)
#define I915_READ16_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readw(dev_priv, (reg), false)
#define I915_WRITE16_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writew(dev_priv, (reg), (val), false)
#define I915_READ(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), true)
#define I915_WRITE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), true)
#define I915_READ_NOTRACE(reg) dev_priv->uncore.funcs.mmio_readl(dev_priv, (reg), false)
#define I915_WRITE_NOTRACE(reg, val) dev_priv->uncore.funcs.mmio_writel(dev_priv, (reg), (val), false)
/* Be very careful with read/write 64-bit values. On 32-bit machines, they
* will be implemented using 2 32-bit writes in an arbitrary order with
* an arbitrary delay between them. This can cause the hardware to
* act upon the intermediate value, possibly leading to corruption and
* machine death. For this reason we do not support I915_WRITE64, or
* dev_priv->uncore.funcs.mmio_writeq.
*
* When reading a 64-bit value as two 32-bit values, the delay may cause
* the two reads to mismatch, e.g. a timestamp overflowing. Also note that
* occasionally a 64-bit register does not actualy support a full readq
* and must be read using two 32-bit reads.
*
* You have been warned.
*/
#define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
#define I915_READ64_2x32(lower_reg, upper_reg) ({ \
u32 upper, lower, old_upper, loop = 0; \
upper = I915_READ(upper_reg); \
do { \
old_upper = upper; \
lower = I915_READ(lower_reg); \
upper = I915_READ(upper_reg); \
} while (upper != old_upper && loop++ < 2); \
(u64)upper << 32 | lower; })
#define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
#define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
#define __raw_read(x, s) \
static inline uint##x##_t __raw_i915_read##x(const struct drm_i915_private *dev_priv, \
i915_reg_t reg) \
{ \
return read##s(dev_priv->regs + i915_mmio_reg_offset(reg)); \
}
#define __raw_write(x, s) \
static inline void __raw_i915_write##x(const struct drm_i915_private *dev_priv, \
i915_reg_t reg, uint##x##_t val) \
{ \
write##s(val, dev_priv->regs + i915_mmio_reg_offset(reg)); \
}
__raw_read(8, b)
__raw_read(16, w)
__raw_read(32, l)
__raw_read(64, q)
__raw_write(8, b)
__raw_write(16, w)
__raw_write(32, l)
__raw_write(64, q)
#undef __raw_read
#undef __raw_write
/* 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__) __raw_i915_read32(dev_priv, (reg__))
#define I915_WRITE_FW(reg__, val__) __raw_i915_write32(dev_priv, (reg__), (val__))
#define I915_WRITE64_FW(reg__, val__) __raw_i915_write64(dev_priv, (reg__), (val__))
#define POSTING_READ_FW(reg__) (void)I915_READ_FW(reg__)
/* "Broadcast RGB" property */
#define INTEL_BROADCAST_RGB_AUTO 0
#define INTEL_BROADCAST_RGB_FULL 1
#define INTEL_BROADCAST_RGB_LIMITED 2
static inline i915_reg_t i915_vgacntrl_reg(struct drm_i915_private *dev_priv)
{
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
return VLV_VGACNTRL;
else if (INTEL_GEN(dev_priv) >= 5)
return CPU_VGACNTRL;
else
return VGACNTRL;
}
static inline unsigned long msecs_to_jiffies_timeout(const unsigned int m)
{
unsigned long j = msecs_to_jiffies(m);
return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
}
static inline unsigned long nsecs_to_jiffies_timeout(const u64 n)
{
return min_t(u64, MAX_JIFFY_OFFSET, nsecs_to_jiffies64(n) + 1);
}
static inline unsigned long
timespec_to_jiffies_timeout(const struct timespec *value)
{
unsigned long j = timespec_to_jiffies(value);
return min_t(unsigned long, MAX_JIFFY_OFFSET, j + 1);
}
/*
* If you need to wait X milliseconds between events A and B, but event B
* doesn't happen exactly after event A, you record the timestamp (jiffies) of
* when event A happened, then just before event B you call this function and
* pass the timestamp as the first argument, and X as the second argument.
*/
static inline void
wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
{
unsigned long target_jiffies, tmp_jiffies, remaining_jiffies;
/*
* Don't re-read the value of "jiffies" every time since it may change
* behind our back and break the math.
*/
tmp_jiffies = jiffies;
target_jiffies = timestamp_jiffies +
msecs_to_jiffies_timeout(to_wait_ms);
if (time_after(target_jiffies, tmp_jiffies)) {
remaining_jiffies = target_jiffies - tmp_jiffies;
while (remaining_jiffies)
remaining_jiffies =
schedule_timeout_uninterruptible(remaining_jiffies);
}
}
static inline bool
__i915_request_irq_complete(const struct drm_i915_gem_request *req)
{
struct intel_engine_cs *engine = req->engine;
u32 seqno;
/* Note that the engine may have wrapped around the seqno, and
* so our request->global_seqno will be ahead of the hardware,
* even though it completed the request before wrapping. We catch
* this by kicking all the waiters before resetting the seqno
* in hardware, and also signal the fence.
*/
if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &req->fence.flags))
return true;
/* The request was dequeued before we were awoken. We check after
* inspecting the hw to confirm that this was the same request
* that generated the HWS update. The memory barriers within
* the request execution are sufficient to ensure that a check
* after reading the value from hw matches this request.
*/
seqno = i915_gem_request_global_seqno(req);
if (!seqno)
return false;
/* Before we do the heavier coherent read of the seqno,
* check the value (hopefully) in the CPU cacheline.
*/
if (__i915_gem_request_completed(req, seqno))
return true;
/* Ensure our read of the seqno is coherent so that we
* do not "miss an interrupt" (i.e. if this is the last
* request and the seqno write from the GPU is not visible
* by the time the interrupt fires, we will see that the
* request is incomplete and go back to sleep awaiting
* another interrupt that will never come.)
*
* Strictly, we only need to do this once after an interrupt,
* but it is easier and safer to do it every time the waiter
* is woken.
*/
if (engine->irq_seqno_barrier &&
test_and_clear_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted)) {
struct intel_breadcrumbs *b = &engine->breadcrumbs;
/* The ordering of irq_posted versus applying the barrier
* is crucial. The clearing of the current irq_posted must
* be visible before we perform the barrier operation,
* such that if a subsequent interrupt arrives, irq_posted
* is reasserted and our task rewoken (which causes us to
* do another __i915_request_irq_complete() immediately
* and reapply the barrier). Conversely, if the clear
* occurs after the barrier, then an interrupt that arrived
* whilst we waited on the barrier would not trigger a
* barrier on the next pass, and the read may not see the
* seqno update.
*/
engine->irq_seqno_barrier(engine);
/* If we consume the irq, but we are no longer the bottom-half,
* the real bottom-half may not have serialised their own
* seqno check with the irq-barrier (i.e. may have inspected
* the seqno before we believe it coherent since they see
* irq_posted == false but we are still running).
*/
spin_lock_irq(&b->irq_lock);
if (b->irq_wait && b->irq_wait->tsk != current)
/* Note that if the bottom-half is changed as we
* are sending the wake-up, the new bottom-half will
* be woken by whomever made the change. We only have
* to worry about when we steal the irq-posted for
* ourself.
*/
wake_up_process(b->irq_wait->tsk);
spin_unlock_irq(&b->irq_lock);
if (__i915_gem_request_completed(req, seqno))
return true;
}
return false;
}
void i915_memcpy_init_early(struct drm_i915_private *dev_priv);
bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len);
/* The movntdqa instructions used for memcpy-from-wc require 16-byte alignment,
* as well as SSE4.1 support. i915_memcpy_from_wc() will report if it cannot
* perform the operation. To check beforehand, pass in the parameters to
* to i915_can_memcpy_from_wc() - since we only care about the low 4 bits,
* you only need to pass in the minor offsets, page-aligned pointers are
* always valid.
*
* For just checking for SSE4.1, in the foreknowledge that the future use
* will be correctly aligned, just use i915_has_memcpy_from_wc().
*/
#define i915_can_memcpy_from_wc(dst, src, len) \
i915_memcpy_from_wc((void *)((unsigned long)(dst) | (unsigned long)(src) | (len)), NULL, 0)
#define i915_has_memcpy_from_wc() \
i915_memcpy_from_wc(NULL, NULL, 0)
/* 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);
static inline bool i915_gem_object_is_coherent(struct drm_i915_gem_object *obj)
{
return (obj->cache_level != I915_CACHE_NONE ||
HAS_LLC(to_i915(obj->base.dev)));
}
#endif