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linux_dsm_epyc7002/drivers/gpu/drm/i915/i915_drv.h
Jani Nikula 665788572c drm/i915/vbt: don't propagate errors from intel_bios_init() 
We don't use the error return for anything other than reporting and
logging that there is no VBT. We can pull the logging in the function,
and remove the error status return. Moreover, if we needed the
information for something later on, we'd probably be better off storing
the bit in dev_priv, and using it where it's needed, instead of using
the error return.

While at it, improve the comments.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/438ebbb0d5f0d321c625065b9cc78532a1dab24f.1489152288.git.jani.nikula@intel.com
2017-03-13 11:52:07 +02:00

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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 "20170306"
#define DRIVER_TIMESTAMP 1488785683
#undef WARN_ON
/* Many gcc seem to no see through this and fall over :( */
#if 0
#define WARN_ON(x) ({ \
bool __i915_warn_cond = (x); \
if (__builtin_constant_p(__i915_warn_cond)) \
BUILD_BUG_ON(__i915_warn_cond); \
WARN(__i915_warn_cond, "WARN_ON(" #x ")"); })
#else
#define WARN_ON(x) WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
#endif
#undef WARN_ON_ONCE
#define WARN_ON_ONCE(x) WARN_ONCE((x), "%s", "WARN_ON_ONCE(" __stringify(x) ")")
#define MISSING_CASE(x) WARN(1, "Missing switch case (%lu) in %s\n", \
(long) (x), __func__);
/* 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);
/* 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 = (1 << FW_DOMAIN_ID_RENDER),
FORCEWAKE_BLITTER = (1 << FW_DOMAIN_ID_BLITTER),
FORCEWAKE_MEDIA = (1 << 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;
struct intel_uncore_forcewake_domain {
struct drm_i915_private *i915;
enum forcewake_domain_id id;
enum forcewake_domains mask;
unsigned wake_count;
struct hrtimer timer;
i915_reg_t reg_set;
u32 val_set;
u32 val_clear;
i915_reg_t reg_ack;
i915_reg_t reg_post;
u32 val_reset;
} fw_domain[FW_DOMAIN_ID_COUNT];
int unclaimed_mmio_check;
};
/* Iterate over initialised fw domains */
#define for_each_fw_domain_masked(domain__, mask__, dev_priv__) \
for ((domain__) = &(dev_priv__)->uncore.fw_domain[0]; \
(domain__) < &(dev_priv__)->uncore.fw_domain[FW_DOMAIN_ID_COUNT]; \
(domain__)++) \
for_each_if ((mask__) & (domain__)->mask)
#define for_each_fw_domain(domain__, dev_priv__) \
for_each_fw_domain_masked(domain__, FORCEWAKE_ALL, dev_priv__)
#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(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 {
u32 cz_clock;
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;
unsigned long flags;
#define I915_RESET_IN_PROGRESS 0
#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 {
/* protects DSPARB registers on pre-g4x/vlv/chv */
spinlock_t dsparb_lock;
/*
* 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);
}
/* 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__)])
#define __mask_next_bit(mask) ({ \
int __idx = ffs(mask) - 1; \
mask &= ~BIT(__idx); \
__idx; \
})
/* 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;
}
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 0x1
#define CLFLUSH_AFTER 0x2
#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_in_progress(struct i915_gpu_error *error)
{
return unlikely(test_bit(I915_RESET_IN_PROGRESS, &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_in_progress_or_wedged(struct i915_gpu_error *error)
{
return i915_reset_in_progress(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);
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);
#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(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(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
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