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drm/i915: Split struct intel_context definition to its own header 

This complex struct pulling in half the driver deserves its own
isolation in preparation for intel_context becoming an outright
complicated class of its own.

In order to split this beast into its own header also requests splitting
several of its dependent types and their dependencies into their own
headers as well.

v2: Add standalone compilation tests

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190308132522.21573-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-03-08 13:25:17 +00:00
parent 7e3d9a5941
commit 39e2f501c1
18 changed files with 974 additions and 817 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/i915/Makefile
View File

@ -56,6 +56,15 @@ i915-$(CONFIG_COMPAT) += i915_ioc32.o
i915-$(CONFIG_DEBUG_FS) += i915_debugfs.o intel_pipe_crc.o
i915-$(CONFIG_PERF_EVENTS) += i915_pmu.o
# Test the headers are compilable as standalone units
i915-$(CONFIG_DRM_I915_WERROR) += \
test_i915_active_types_standalone.o \
test_i915_gem_context_types_standalone.o \
test_i915_timeline_types_standalone.o \
test_intel_context_types_standalone.o \
test_intel_engine_types_standalone.o \
test_intel_workarounds_types_standalone.o
# GEM code
i915-y += \
i915_active.o \

238
drivers/gpu/drm/i915/i915_gem_context.h
View File

@ -25,218 +25,17 @@
#ifndef __I915_GEM_CONTEXT_H__
#define __I915_GEM_CONTEXT_H__
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/radix-tree.h>
#include "i915_gem_context_types.h"
#include "i915_gem.h"
#include "i915_scheduler.h"
#include "intel_context.h"
#include "intel_device_info.h"
#include "intel_ringbuffer.h"
struct pid;
struct drm_device;
struct drm_file;
struct drm_i915_private;
struct drm_i915_file_private;
struct i915_hw_ppgtt;
struct i915_request;
struct i915_vma;
struct intel_ring;
#define DEFAULT_CONTEXT_HANDLE 0
struct intel_context;
struct intel_context_ops {
void (*unpin)(struct intel_context *ce);
void (*destroy)(struct intel_context *ce);
};
/*
* Powergating configuration for a particular (context,engine).
*/
struct intel_sseu {
u8 slice_mask;
u8 subslice_mask;
u8 min_eus_per_subslice;
u8 max_eus_per_subslice;
};
/**
* struct i915_gem_context - client state
*
* The struct i915_gem_context represents the combined view of the driver and
* logical hardware state for a particular client.
*/
struct i915_gem_context {
/** i915: i915 device backpointer */
struct drm_i915_private *i915;
/** file_priv: owning file descriptor */
struct drm_i915_file_private *file_priv;
/**
* @ppgtt: unique address space (GTT)
*
* In full-ppgtt mode, each context has its own address space ensuring
* complete seperation of one client from all others.
*
* In other modes, this is a NULL pointer with the expectation that
* the caller uses the shared global GTT.
*/
struct i915_hw_ppgtt *ppgtt;
/**
* @pid: process id of creator
*
* Note that who created the context may not be the principle user,
* as the context may be shared across a local socket. However,
* that should only affect the default context, all contexts created
* explicitly by the client are expected to be isolated.
*/
struct pid *pid;
/**
* @name: arbitrary name
*
* A name is constructed for the context from the creator's process
* name, pid and user handle in order to uniquely identify the
* context in messages.
*/
const char *name;
/** link: place with &drm_i915_private.context_list */
struct list_head link;
struct llist_node free_link;
/**
* @ref: reference count
*
* A reference to a context is held by both the client who created it
* and on each request submitted to the hardware using the request
* (to ensure the hardware has access to the state until it has
* finished all pending writes). See i915_gem_context_get() and
* i915_gem_context_put() for access.
*/
struct kref ref;
/**
* @rcu: rcu_head for deferred freeing.
*/
struct rcu_head rcu;
/**
* @user_flags: small set of booleans controlled by the user
*/
unsigned long user_flags;
#define UCONTEXT_NO_ZEROMAP 0
#define UCONTEXT_NO_ERROR_CAPTURE 1
#define UCONTEXT_BANNABLE 2
#define UCONTEXT_RECOVERABLE 3
/**
* @flags: small set of booleans
*/
unsigned long flags;
#define CONTEXT_BANNED 0
#define CONTEXT_CLOSED 1
#define CONTEXT_FORCE_SINGLE_SUBMISSION 2
/**
* @hw_id: - unique identifier for the context
*
* The hardware needs to uniquely identify the context for a few
* functions like fault reporting, PASID, scheduling. The
* &drm_i915_private.context_hw_ida is used to assign a unqiue
* id for the lifetime of the context.
*
* @hw_id_pin_count: - number of times this context had been pinned
* for use (should be, at most, once per engine).
*
* @hw_id_link: - all contexts with an assigned id are tracked
* for possible repossession.
*/
unsigned int hw_id;
atomic_t hw_id_pin_count;
struct list_head hw_id_link;
struct list_head active_engines;
struct mutex mutex;
/**
* @user_handle: userspace identifier
*
* A unique per-file identifier is generated from
* &drm_i915_file_private.contexts.
*/
u32 user_handle;
struct i915_sched_attr sched;
/** engine: per-engine logical HW state */
struct intel_context {
struct i915_gem_context *gem_context;
struct intel_engine_cs *engine;
struct intel_engine_cs *active;
struct list_head active_link;
struct list_head signal_link;
struct list_head signals;
struct i915_vma *state;
struct intel_ring *ring;
u32 *lrc_reg_state;
u64 lrc_desc;
int pin_count;
/**
* active_tracker: Active tracker for the external rq activity
* on this intel_context object.
*/
struct i915_active_request active_tracker;
const struct intel_context_ops *ops;
/** sseu: Control eu/slice partitioning */
struct intel_sseu sseu;
} __engine[I915_NUM_ENGINES];
/** ring_size: size for allocating the per-engine ring buffer */
u32 ring_size;
/** desc_template: invariant fields for the HW context descriptor */
u32 desc_template;
/** guilty_count: How many times this context has caused a GPU hang. */
atomic_t guilty_count;
/**
* @active_count: How many times this context was active during a GPU
* hang, but did not cause it.
*/
atomic_t active_count;
/**
* @hang_timestamp: The last time(s) this context caused a GPU hang
*/
unsigned long hang_timestamp[2];
#define CONTEXT_FAST_HANG_JIFFIES (120 * HZ) /* 3 hangs within 120s? Banned! */
/** remap_slice: Bitmask of cache lines that need remapping */
u8 remap_slice;
/** handles_vma: rbtree to look up our context specific obj/vma for
* the user handle. (user handles are per fd, but the binding is
* per vm, which may be one per context or shared with the global GTT)
*/
struct radix_tree_root handles_vma;
/** handles_list: reverse list of all the rbtree entries in use for
* this context, which allows us to free all the allocations on
* context close.
*/
struct list_head handles_list;
};
static inline bool i915_gem_context_is_closed(const struct i915_gem_context *ctx)
{
return test_bit(CONTEXT_CLOSED, &ctx->flags);
@ -338,35 +137,6 @@ static inline bool i915_gem_context_is_kernel(struct i915_gem_context *ctx)
return !ctx->file_priv;
}
static inline struct intel_context *
to_intel_context(struct i915_gem_context *ctx,
const struct intel_engine_cs *engine)
{
return &ctx->__engine[engine->id];
}
static inline struct intel_context *
intel_context_pin(struct i915_gem_context *ctx, struct intel_engine_cs *engine)
{
return engine->context_pin(engine, ctx);
}
static inline void __intel_context_pin(struct intel_context *ce)
{
GEM_BUG_ON(!ce->pin_count);
ce->pin_count++;
}
static inline void intel_context_unpin(struct intel_context *ce)
{
GEM_BUG_ON(!ce->pin_count);
if (--ce->pin_count)
return;
GEM_BUG_ON(!ce->ops);
ce->ops->unpin(ce);
}
/* i915_gem_context.c */
int __must_check i915_gem_contexts_init(struct drm_i915_private *dev_priv);
void i915_gem_contexts_lost(struct drm_i915_private *dev_priv);
@ -410,10 +180,6 @@ static inline void i915_gem_context_put(struct i915_gem_context *ctx)
kref_put(&ctx->ref, i915_gem_context_release);
}
void intel_context_init(struct intel_context *ce,
struct i915_gem_context *ctx,
struct intel_engine_cs *engine);
struct i915_lut_handle *i915_lut_handle_alloc(void);
void i915_lut_handle_free(struct i915_lut_handle *lut);

181
drivers/gpu/drm/i915/i915_gem_context_types.h Normal file
View File

@ -0,0 +1,181 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#ifndef __I915_GEM_CONTEXT_TYPES_H__
#define __I915_GEM_CONTEXT_TYPES_H__
#include <linux/atomic.h>
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
#include <linux/rcupdate.h>
#include <linux/types.h>
#include "i915_gem.h" /* I915_NUM_ENGINES */
#include "i915_scheduler.h"
#include "intel_context_types.h"
struct pid;
struct drm_i915_private;
struct drm_i915_file_private;
struct i915_hw_ppgtt;
struct i915_timeline;
struct intel_ring;
/**
* struct i915_gem_context - client state
*
* The struct i915_gem_context represents the combined view of the driver and
* logical hardware state for a particular client.
*/
struct i915_gem_context {
/** i915: i915 device backpointer */
struct drm_i915_private *i915;
/** file_priv: owning file descriptor */
struct drm_i915_file_private *file_priv;
/**
* @ppgtt: unique address space (GTT)
*
* In full-ppgtt mode, each context has its own address space ensuring
* complete seperation of one client from all others.
*
* In other modes, this is a NULL pointer with the expectation that
* the caller uses the shared global GTT.
*/
struct i915_hw_ppgtt *ppgtt;
/**
* @pid: process id of creator
*
* Note that who created the context may not be the principle user,
* as the context may be shared across a local socket. However,
* that should only affect the default context, all contexts created
* explicitly by the client are expected to be isolated.
*/
struct pid *pid;
/**
* @name: arbitrary name
*
* A name is constructed for the context from the creator's process
* name, pid and user handle in order to uniquely identify the
* context in messages.
*/
const char *name;
/** link: place with &drm_i915_private.context_list */
struct list_head link;
struct llist_node free_link;
/**
* @ref: reference count
*
* A reference to a context is held by both the client who created it
* and on each request submitted to the hardware using the request
* (to ensure the hardware has access to the state until it has
* finished all pending writes). See i915_gem_context_get() and
* i915_gem_context_put() for access.
*/
struct kref ref;
/**
* @rcu: rcu_head for deferred freeing.
*/
struct rcu_head rcu;
/**
* @user_flags: small set of booleans controlled by the user
*/
unsigned long user_flags;
#define UCONTEXT_NO_ZEROMAP 0
#define UCONTEXT_NO_ERROR_CAPTURE 1
#define UCONTEXT_BANNABLE 2
#define UCONTEXT_RECOVERABLE 3
/**
* @flags: small set of booleans
*/
unsigned long flags;
#define CONTEXT_BANNED 0
#define CONTEXT_CLOSED 1
#define CONTEXT_FORCE_SINGLE_SUBMISSION 2
/**
* @hw_id: - unique identifier for the context
*
* The hardware needs to uniquely identify the context for a few
* functions like fault reporting, PASID, scheduling. The
* &drm_i915_private.context_hw_ida is used to assign a unqiue
* id for the lifetime of the context.
*
* @hw_id_pin_count: - number of times this context had been pinned
* for use (should be, at most, once per engine).
*
* @hw_id_link: - all contexts with an assigned id are tracked
* for possible repossession.
*/
unsigned int hw_id;
atomic_t hw_id_pin_count;
struct list_head hw_id_link;
struct list_head active_engines;
struct mutex mutex;
/**
* @user_handle: userspace identifier
*
* A unique per-file identifier is generated from
* &drm_i915_file_private.contexts.
*/
u32 user_handle;
#define DEFAULT_CONTEXT_HANDLE 0
struct i915_sched_attr sched;
/** engine: per-engine logical HW state */
struct intel_context __engine[I915_NUM_ENGINES];
/** ring_size: size for allocating the per-engine ring buffer */
u32 ring_size;
/** desc_template: invariant fields for the HW context descriptor */
u32 desc_template;
/** guilty_count: How many times this context has caused a GPU hang. */
atomic_t guilty_count;
/**
* @active_count: How many times this context was active during a GPU
* hang, but did not cause it.
*/
atomic_t active_count;
/**
* @hang_timestamp: The last time(s) this context caused a GPU hang
*/
unsigned long hang_timestamp[2];
#define CONTEXT_FAST_HANG_JIFFIES (120 * HZ) /* 3 hangs within 120s? Banned! */
/** remap_slice: Bitmask of cache lines that need remapping */
u8 remap_slice;
/** handles_vma: rbtree to look up our context specific obj/vma for
* the user handle. (user handles are per fd, but the binding is
* per vm, which may be one per context or shared with the global GTT)
*/
struct radix_tree_root handles_vma;
/** handles_list: reverse list of all the rbtree entries in use for
* this context, which allows us to free all the allocations on
* context close.
*/
struct list_head handles_list;
};
#endif /* __I915_GEM_CONTEXT_TYPES_H__ */

70
drivers/gpu/drm/i915/i915_timeline.h
View File

@ -25,76 +25,10 @@
#ifndef I915_TIMELINE_H
#define I915_TIMELINE_H
#include <linux/list.h>
#include <linux/kref.h>
#include <linux/lockdep.h>
#include "i915_active.h"
#include "i915_request.h"
#include "i915_syncmap.h"
#include "i915_utils.h"
struct i915_vma;
struct i915_timeline_cacheline;
struct i915_timeline {
u64 fence_context;
u32 seqno;
spinlock_t lock;
#define TIMELINE_CLIENT 0 /* default subclass */
#define TIMELINE_ENGINE 1
struct mutex mutex; /* protects the flow of requests */
unsigned int pin_count;
const u32 *hwsp_seqno;
struct i915_vma *hwsp_ggtt;
u32 hwsp_offset;
struct i915_timeline_cacheline *hwsp_cacheline;
bool has_initial_breadcrumb;
/**
* List of breadcrumbs associated with GPU requests currently
* outstanding.
*/
struct list_head requests;
/* Contains an RCU guarded pointer to the last request. No reference is
* held to the request, users must carefully acquire a reference to
* the request using i915_active_request_get_request_rcu(), or hold the
* struct_mutex.
*/
struct i915_active_request last_request;
/**
* We track the most recent seqno that we wait on in every context so
* that we only have to emit a new await and dependency on a more
* recent sync point. As the contexts may be executed out-of-order, we
* have to track each individually and can not rely on an absolute
* global_seqno. When we know that all tracked fences are completed
* (i.e. when the driver is idle), we know that the syncmap is
* redundant and we can discard it without loss of generality.
*/
struct i915_syncmap *sync;
/**
* Barrier provides the ability to serialize ordering between different
* timelines.
*
* Users can call i915_timeline_set_barrier which will make all
* subsequent submissions to this timeline be executed only after the
* barrier has been completed.
*/
struct i915_active_request barrier;
struct list_head link;
const char *name;
struct drm_i915_private *i915;
struct kref kref;
};
#include "i915_timeline_types.h"
int i915_timeline_init(struct drm_i915_private *i915,
struct i915_timeline *tl,

80
drivers/gpu/drm/i915/i915_timeline_types.h Normal file
View File

@ -0,0 +1,80 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2016 Intel Corporation
*/
#ifndef __I915_TIMELINE_TYPES_H__
#define __I915_TIMELINE_TYPES_H__
#include <linux/list.h>
#include <linux/kref.h>
#include <linux/types.h>
#include "i915_active.h"
struct drm_i915_private;
struct i915_vma;
struct i915_timeline_cacheline;
struct i915_syncmap;
struct i915_timeline {
u64 fence_context;
u32 seqno;
spinlock_t lock;
#define TIMELINE_CLIENT 0 /* default subclass */
#define TIMELINE_ENGINE 1
struct mutex mutex; /* protects the flow of requests */
unsigned int pin_count;
const u32 *hwsp_seqno;
struct i915_vma *hwsp_ggtt;
u32 hwsp_offset;
struct i915_timeline_cacheline *hwsp_cacheline;
bool has_initial_breadcrumb;
/**
* List of breadcrumbs associated with GPU requests currently
* outstanding.
*/
struct list_head requests;
/* Contains an RCU guarded pointer to the last request. No reference is
* held to the request, users must carefully acquire a reference to
* the request using i915_active_request_get_request_rcu(), or hold the
* struct_mutex.
*/
struct i915_active_request last_request;
/**
* We track the most recent seqno that we wait on in every context so
* that we only have to emit a new await and dependency on a more
* recent sync point. As the contexts may be executed out-of-order, we
* have to track each individually and can not rely on an absolute
* global_seqno. When we know that all tracked fences are completed
* (i.e. when the driver is idle), we know that the syncmap is
* redundant and we can discard it without loss of generality.
*/
struct i915_syncmap *sync;
/**
* Barrier provides the ability to serialize ordering between different
* timelines.
*
* Users can call i915_timeline_set_barrier which will make all
* subsequent submissions to this timeline be executed only after the
* barrier has been completed.
*/
struct i915_active_request barrier;
struct list_head link;
const char *name;
struct drm_i915_private *i915;
struct kref kref;
};
#endif /* __I915_TIMELINE_TYPES_H__ */

47
drivers/gpu/drm/i915/intel_context.h Normal file
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@ -0,0 +1,47 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#ifndef __INTEL_CONTEXT_H__
#define __INTEL_CONTEXT_H__
#include "i915_gem_context_types.h"
#include "intel_context_types.h"
#include "intel_engine_types.h"
void intel_context_init(struct intel_context *ce,
struct i915_gem_context *ctx,
struct intel_engine_cs *engine);
static inline struct intel_context *
to_intel_context(struct i915_gem_context *ctx,
const struct intel_engine_cs *engine)
{
return &ctx->__engine[engine->id];
}
static inline struct intel_context *
intel_context_pin(struct i915_gem_context *ctx, struct intel_engine_cs *engine)
{
return engine->context_pin(engine, ctx);
}
static inline void __intel_context_pin(struct intel_context *ce)
{
GEM_BUG_ON(!ce->pin_count);
ce->pin_count++;
}
static inline void intel_context_unpin(struct intel_context *ce)
{
GEM_BUG_ON(!ce->pin_count);
if (--ce->pin_count)
return;
GEM_BUG_ON(!ce->ops);
ce->ops->unpin(ce);
}
#endif /* __INTEL_CONTEXT_H__ */

60
drivers/gpu/drm/i915/intel_context_types.h Normal file
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@ -0,0 +1,60 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#ifndef __INTEL_CONTEXT_TYPES__
#define __INTEL_CONTEXT_TYPES__
#include <linux/list.h>
#include <linux/types.h>
#include "i915_active_types.h"
struct i915_gem_context;
struct i915_vma;
struct intel_context;
struct intel_ring;
struct intel_context_ops {
void (*unpin)(struct intel_context *ce);
void (*destroy)(struct intel_context *ce);
};
/*
* Powergating configuration for a particular (context,engine).
*/
struct intel_sseu {
u8 slice_mask;
u8 subslice_mask;
u8 min_eus_per_subslice;
u8 max_eus_per_subslice;
};
struct intel_context {
struct i915_gem_context *gem_context;
struct intel_engine_cs *engine;
struct intel_engine_cs *active;
struct list_head active_link;
struct list_head signal_link;
struct list_head signals;
struct i915_vma *state;
struct intel_ring *ring;
u32 *lrc_reg_state;
u64 lrc_desc;
int pin_count;
/**
* active_tracker: Active tracker for the external rq activity
* on this intel_context object.
*/
struct i915_active_request active_tracker;
const struct intel_context_ops *ops;
/** sseu: Control eu/slice partitioning */
struct intel_sseu sseu;
};
#endif /* __INTEL_CONTEXT_TYPES__ */

521
drivers/gpu/drm/i915/intel_engine_types.h Normal file
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@ -0,0 +1,521 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#ifndef __INTEL_ENGINE_TYPES__
#define __INTEL_ENGINE_TYPES__
#include <linux/hashtable.h>
#include <linux/irq_work.h>
#include <linux/list.h>
#include <linux/types.h>
#include "i915_timeline_types.h"
#include "intel_device_info.h"
#include "intel_workarounds_types.h"
#include "i915_gem_batch_pool.h"
#include "i915_pmu.h"
#define I915_MAX_SLICES 3
#define I915_MAX_SUBSLICES 8
#define I915_CMD_HASH_ORDER 9
struct drm_i915_reg_table;
struct i915_gem_context;
struct i915_request;
struct i915_sched_attr;
struct intel_hw_status_page {
struct i915_vma *vma;
u32 *addr;
};
struct intel_instdone {
u32 instdone;
/* The following exist only in the RCS engine */
u32 slice_common;
u32 sampler[I915_MAX_SLICES][I915_MAX_SUBSLICES];
u32 row[I915_MAX_SLICES][I915_MAX_SUBSLICES];
};
struct intel_engine_hangcheck {
u64 acthd;
u32 last_seqno;
u32 next_seqno;
unsigned long action_timestamp;
struct intel_instdone instdone;
};
struct intel_ring {
struct i915_vma *vma;
void *vaddr;
struct i915_timeline *timeline;
struct list_head request_list;
struct list_head active_link;
u32 head;
u32 tail;
u32 emit;
u32 space;
u32 size;
u32 effective_size;
};
/*
* we use a single page to load ctx workarounds so all of these
* values are referred in terms of dwords
*
* struct i915_wa_ctx_bb:
* offset: specifies batch starting position, also helpful in case
* if we want to have multiple batches at different offsets based on
* some criteria. It is not a requirement at the moment but provides
* an option for future use.
* size: size of the batch in DWORDS
*/
struct i915_ctx_workarounds {
struct i915_wa_ctx_bb {
u32 offset;
u32 size;
} indirect_ctx, per_ctx;
struct i915_vma *vma;
};
#define I915_MAX_VCS 4
#define I915_MAX_VECS 2
/*
* Engine IDs definitions.
* Keep instances of the same type engine together.
*/
enum intel_engine_id {
RCS0 = 0,
BCS0,
VCS0,
VCS1,
VCS2,
VCS3,
#define _VCS(n) (VCS0 + (n))
VECS0,
VECS1
#define _VECS(n) (VECS0 + (n))
};
struct st_preempt_hang {
struct completion completion;
unsigned int count;
bool inject_hang;
};
/**
* struct intel_engine_execlists - execlist submission queue and port state
*
* The struct intel_engine_execlists represents the combined logical state of
* driver and the hardware state for execlist mode of submission.
*/
struct intel_engine_execlists {
/**
* @tasklet: softirq tasklet for bottom handler
*/
struct tasklet_struct tasklet;
/**
* @default_priolist: priority list for I915_PRIORITY_NORMAL
*/
struct i915_priolist default_priolist;
/**
* @no_priolist: priority lists disabled
*/
bool no_priolist;
/**
* @submit_reg: gen-specific execlist submission register
* set to the ExecList Submission Port (elsp) register pre-Gen11 and to
* the ExecList Submission Queue Contents register array for Gen11+
*/
u32 __iomem *submit_reg;
/**
* @ctrl_reg: the enhanced execlists control register, used to load the
* submit queue on the HW and to request preemptions to idle
*/
u32 __iomem *ctrl_reg;
/**
* @port: execlist port states
*
* For each hardware ELSP (ExecList Submission Port) we keep
* track of the last request and the number of times we submitted
* that port to hw. We then count the number of times the hw reports
* a context completion or preemption. As only one context can
* be active on hw, we limit resubmission of context to port[0]. This
* is called Lite Restore, of the context.
*/
struct execlist_port {
/**
* @request_count: combined request and submission count
*/
struct i915_request *request_count;
#define EXECLIST_COUNT_BITS 2
#define port_request(p) ptr_mask_bits((p)->request_count, EXECLIST_COUNT_BITS)
#define port_count(p) ptr_unmask_bits((p)->request_count, EXECLIST_COUNT_BITS)
#define port_pack(rq, count) ptr_pack_bits(rq, count, EXECLIST_COUNT_BITS)
#define port_unpack(p, count) ptr_unpack_bits((p)->request_count, count, EXECLIST_COUNT_BITS)
#define port_set(p, packed) ((p)->request_count = (packed))
#define port_isset(p) ((p)->request_count)
#define port_index(p, execlists) ((p) - (execlists)->port)
/**
* @context_id: context ID for port
*/
GEM_DEBUG_DECL(u32 context_id);
#define EXECLIST_MAX_PORTS 2
} port[EXECLIST_MAX_PORTS];
/**
* @active: is the HW active? We consider the HW as active after
* submitting any context for execution and until we have seen the
* last context completion event. After that, we do not expect any
* more events until we submit, and so can park the HW.
*
* As we have a small number of different sources from which we feed
* the HW, we track the state of each inside a single bitfield.
*/
unsigned int active;
#define EXECLISTS_ACTIVE_USER 0
#define EXECLISTS_ACTIVE_PREEMPT 1
#define EXECLISTS_ACTIVE_HWACK 2
/**
* @port_mask: number of execlist ports - 1
*/
unsigned int port_mask;
/**
* @queue_priority_hint: Highest pending priority.
*
* When we add requests into the queue, or adjust the priority of
* executing requests, we compute the maximum priority of those
* pending requests. We can then use this value to determine if
* we need to preempt the executing requests to service the queue.
* However, since the we may have recorded the priority of an inflight
* request we wanted to preempt but since completed, at the time of
* dequeuing the priority hint may no longer may match the highest
* available request priority.
*/
int queue_priority_hint;
/**
* @queue: queue of requests, in priority lists
*/
struct rb_root_cached queue;
/**
* @csb_write: control register for Context Switch buffer
*
* Note this register may be either mmio or HWSP shadow.
*/
u32 *csb_write;
/**
* @csb_status: status array for Context Switch buffer
*
* Note these register may be either mmio or HWSP shadow.
*/
u32 *csb_status;
/**
* @preempt_complete_status: expected CSB upon completing preemption
*/
u32 preempt_complete_status;
/**
* @csb_head: context status buffer head
*/
u8 csb_head;
I915_SELFTEST_DECLARE(struct st_preempt_hang preempt_hang;)
};
#define INTEL_ENGINE_CS_MAX_NAME 8
struct intel_engine_cs {
struct drm_i915_private *i915;
char name[INTEL_ENGINE_CS_MAX_NAME];
enum intel_engine_id id;
unsigned int hw_id;
unsigned int guc_id;
intel_engine_mask_t mask;
u8 uabi_class;
u8 class;
u8 instance;
u32 context_size;
u32 mmio_base;
struct intel_ring *buffer;
struct i915_timeline timeline;
struct drm_i915_gem_object *default_state;
void *pinned_default_state;
/* Rather than have every client wait upon all user interrupts,
* with the herd waking after every interrupt and each doing the
* heavyweight seqno dance, we delegate the task (of being the
* bottom-half of the user interrupt) to the first client. After
* every interrupt, we wake up one client, who does the heavyweight
* coherent seqno read and either goes back to sleep (if incomplete),
* or wakes up all the completed clients in parallel, before then
* transferring the bottom-half status to the next client in the queue.
*
* Compared to walking the entire list of waiters in a single dedicated
* bottom-half, we reduce the latency of the first waiter by avoiding
* a context switch, but incur additional coherent seqno reads when
* following the chain of request breadcrumbs. Since it is most likely
* that we have a single client waiting on each seqno, then reducing
* the overhead of waking that client is much preferred.
*/
struct intel_breadcrumbs {
spinlock_t irq_lock;
struct list_head signalers;
struct irq_work irq_work; /* for use from inside irq_lock */
unsigned int irq_enabled;
bool irq_armed;
} breadcrumbs;
struct intel_engine_pmu {
/**
* @enable: Bitmask of enable sample events on this engine.
*
* Bits correspond to sample event types, for instance
* I915_SAMPLE_QUEUED is bit 0 etc.
*/
u32 enable;
/**
* @enable_count: Reference count for the enabled samplers.
*
* Index number corresponds to @enum drm_i915_pmu_engine_sample.
*/
unsigned int enable_count[I915_ENGINE_SAMPLE_COUNT];
/**
* @sample: Counter values for sampling events.
*
* Our internal timer stores the current counters in this field.
*
* Index number corresponds to @enum drm_i915_pmu_engine_sample.
*/
struct i915_pmu_sample sample[I915_ENGINE_SAMPLE_COUNT];
} pmu;
/*
* A pool of objects to use as shadow copies of client batch buffers
* when the command parser is enabled. Prevents the client from
* modifying the batch contents after software parsing.
*/
struct i915_gem_batch_pool batch_pool;
struct intel_hw_status_page status_page;
struct i915_ctx_workarounds wa_ctx;
struct i915_wa_list ctx_wa_list;
struct i915_wa_list wa_list;
struct i915_wa_list whitelist;
u32 irq_keep_mask; /* always keep these interrupts */
u32 irq_enable_mask; /* bitmask to enable ring interrupt */
void (*irq_enable)(struct intel_engine_cs *engine);
void (*irq_disable)(struct intel_engine_cs *engine);
int (*init_hw)(struct intel_engine_cs *engine);
struct {
void (*prepare)(struct intel_engine_cs *engine);
void (*reset)(struct intel_engine_cs *engine, bool stalled);
void (*finish)(struct intel_engine_cs *engine);
} reset;
void (*park)(struct intel_engine_cs *engine);
void (*unpark)(struct intel_engine_cs *engine);
void (*set_default_submission)(struct intel_engine_cs *engine);
struct intel_context *(*context_pin)(struct intel_engine_cs *engine,
struct i915_gem_context *ctx);
int (*request_alloc)(struct i915_request *rq);
int (*init_context)(struct i915_request *rq);
int (*emit_flush)(struct i915_request *request, u32 mode);
#define EMIT_INVALIDATE BIT(0)
#define EMIT_FLUSH BIT(1)
#define EMIT_BARRIER (EMIT_INVALIDATE | EMIT_FLUSH)
int (*emit_bb_start)(struct i915_request *rq,
u64 offset, u32 length,
unsigned int dispatch_flags);
#define I915_DISPATCH_SECURE BIT(0)
#define I915_DISPATCH_PINNED BIT(1)
int (*emit_init_breadcrumb)(struct i915_request *rq);
u32 *(*emit_fini_breadcrumb)(struct i915_request *rq,
u32 *cs);
unsigned int emit_fini_breadcrumb_dw;
/* Pass the request to the hardware queue (e.g. directly into
* the legacy ringbuffer or to the end of an execlist).
*
* This is called from an atomic context with irqs disabled; must
* be irq safe.
*/
void (*submit_request)(struct i915_request *rq);
/*
* Call when the priority on a request has changed and it and its
* dependencies may need rescheduling. Note the request itself may
* not be ready to run!
*/
void (*schedule)(struct i915_request *request,
const struct i915_sched_attr *attr);
/*
* Cancel all requests on the hardware, or queued for execution.
* This should only cancel the ready requests that have been
* submitted to the engine (via the engine->submit_request callback).
* This is called when marking the device as wedged.
*/
void (*cancel_requests)(struct intel_engine_cs *engine);
void (*cleanup)(struct intel_engine_cs *engine);
struct intel_engine_execlists execlists;
/* Contexts are pinned whilst they are active on the GPU. The last
* context executed remains active whilst the GPU is idle - the
* switch away and write to the context object only occurs on the
* next execution. Contexts are only unpinned on retirement of the
* following request ensuring that we can always write to the object
* on the context switch even after idling. Across suspend, we switch
* to the kernel context and trash it as the save may not happen
* before the hardware is powered down.
*/
struct intel_context *last_retired_context;
/* status_notifier: list of callbacks for context-switch changes */
struct atomic_notifier_head context_status_notifier;
struct intel_engine_hangcheck hangcheck;
#define I915_ENGINE_NEEDS_CMD_PARSER BIT(0)
#define I915_ENGINE_SUPPORTS_STATS BIT(1)
#define I915_ENGINE_HAS_PREEMPTION BIT(2)
#define I915_ENGINE_HAS_SEMAPHORES BIT(3)
unsigned int flags;
/*
* Table of commands the command parser needs to know about
* for this engine.
*/
DECLARE_HASHTABLE(cmd_hash, I915_CMD_HASH_ORDER);
/*
* Table of registers allowed in commands that read/write registers.
*/
const struct drm_i915_reg_table *reg_tables;
int reg_table_count;
/*
* Returns the bitmask for the length field of the specified command.
* Return 0 for an unrecognized/invalid command.
*
* If the command parser finds an entry for a command in the engine's
* cmd_tables, it gets the command's length based on the table entry.
* If not, it calls this function to determine the per-engine length
* field encoding for the command (i.e. different opcode ranges use
* certain bits to encode the command length in the header).
*/
u32 (*get_cmd_length_mask)(u32 cmd_header);
struct {
/**
* @lock: Lock protecting the below fields.
*/
seqlock_t lock;
/**
* @enabled: Reference count indicating number of listeners.
*/
unsigned int enabled;
/**
* @active: Number of contexts currently scheduled in.
*/
unsigned int active;
/**
* @enabled_at: Timestamp when busy stats were enabled.
*/
ktime_t enabled_at;
/**
* @start: Timestamp of the last idle to active transition.
*
* Idle is defined as active == 0, active is active > 0.
*/
ktime_t start;
/**
* @total: Total time this engine was busy.
*
* Accumulated time not counting the most recent block in cases
* where engine is currently busy (active > 0).
*/
ktime_t total;
} stats;
};
static inline bool
intel_engine_needs_cmd_parser(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_NEEDS_CMD_PARSER;
}
static inline bool
intel_engine_supports_stats(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_SUPPORTS_STATS;
}
static inline bool
intel_engine_has_preemption(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_HAS_PREEMPTION;
}
static inline bool
intel_engine_has_semaphores(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_HAS_SEMAPHORES;
}
#define instdone_slice_mask(dev_priv__) \
(IS_GEN(dev_priv__, 7) ? \
1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
#define instdone_subslice_mask(dev_priv__) \
(IS_GEN(dev_priv__, 7) ? \
1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
for ((slice__) = 0, (subslice__) = 0; \
(slice__) < I915_MAX_SLICES; \
(subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
(slice__) += ((subslice__) == 0)) \
for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
(BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
#endif /* __INTEL_ENGINE_TYPES_H__ */

1
drivers/gpu/drm/i915/intel_guc.h
View File

@ -32,6 +32,7 @@
#include "intel_guc_log.h"
#include "intel_guc_reg.h"
#include "intel_uc_fw.h"
#include "i915_utils.h"
#include "i915_vma.h"
struct guc_preempt_work {

502
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -15,14 +15,11 @@
#include "i915_request.h"
#include "i915_selftest.h"
#include "i915_timeline.h"
#include "intel_device_info.h"
#include "intel_engine_types.h"
#include "intel_gpu_commands.h"
#include "intel_workarounds.h"
struct drm_printer;
struct i915_sched_attr;
#define I915_CMD_HASH_ORDER 9
/* Early gen2 devices have a cacheline of just 32 bytes, using 64 is overkill,
* but keeps the logic simple. Indeed, the whole purpose of this macro is just
@ -32,11 +29,6 @@ struct i915_sched_attr;
#define CACHELINE_BYTES 64
#define CACHELINE_DWORDS (CACHELINE_BYTES / sizeof(u32))
struct intel_hw_status_page {
struct i915_vma *vma;
u32 *addr;
};
#define I915_READ_TAIL(engine) I915_READ(RING_TAIL((engine)->mmio_base))
#define I915_WRITE_TAIL(engine, val) I915_WRITE(RING_TAIL((engine)->mmio_base), val)
@ -91,498 +83,6 @@ hangcheck_action_to_str(const enum intel_engine_hangcheck_action a)
return "unknown";
}
#define I915_MAX_SLICES 3
#define I915_MAX_SUBSLICES 8
#define instdone_slice_mask(dev_priv__) \
(IS_GEN(dev_priv__, 7) ? \
1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
#define instdone_subslice_mask(dev_priv__) \
(IS_GEN(dev_priv__, 7) ? \
1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
for ((slice__) = 0, (subslice__) = 0; \
(slice__) < I915_MAX_SLICES; \
(subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
(slice__) += ((subslice__) == 0)) \
for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
(BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
struct intel_instdone {
u32 instdone;
/* The following exist only in the RCS engine */
u32 slice_common;
u32 sampler[I915_MAX_SLICES][I915_MAX_SUBSLICES];
u32 row[I915_MAX_SLICES][I915_MAX_SUBSLICES];
};
struct intel_engine_hangcheck {
u64 acthd;
u32 last_seqno;
u32 next_seqno;
unsigned long action_timestamp;
struct intel_instdone instdone;
};
struct intel_ring {
struct i915_vma *vma;
void *vaddr;
struct i915_timeline *timeline;
struct list_head request_list;
struct list_head active_link;
u32 head;
u32 tail;
u32 emit;
u32 space;
u32 size;
u32 effective_size;
};
struct i915_gem_context;
struct drm_i915_reg_table;
/*
* we use a single page to load ctx workarounds so all of these
* values are referred in terms of dwords
*
* struct i915_wa_ctx_bb:
* offset: specifies batch starting position, also helpful in case
* if we want to have multiple batches at different offsets based on
* some criteria. It is not a requirement at the moment but provides
* an option for future use.
* size: size of the batch in DWORDS
*/
struct i915_ctx_workarounds {
struct i915_wa_ctx_bb {
u32 offset;
u32 size;
} indirect_ctx, per_ctx;
struct i915_vma *vma;
};
struct i915_request;
#define I915_MAX_VCS 4
#define I915_MAX_VECS 2
/*
* Engine IDs definitions.
* Keep instances of the same type engine together.
*/
enum intel_engine_id {
RCS0 = 0,
BCS0,
VCS0,
VCS1,
VCS2,
VCS3,
#define _VCS(n) (VCS0 + (n))
VECS0,
VECS1
#define _VECS(n) (VECS0 + (n))
};
struct st_preempt_hang {
struct completion completion;
unsigned int count;
bool inject_hang;
};
/**
* struct intel_engine_execlists - execlist submission queue and port state
*
* The struct intel_engine_execlists represents the combined logical state of
* driver and the hardware state for execlist mode of submission.
*/
struct intel_engine_execlists {
/**
* @tasklet: softirq tasklet for bottom handler
*/
struct tasklet_struct tasklet;
/**
* @default_priolist: priority list for I915_PRIORITY_NORMAL
*/
struct i915_priolist default_priolist;
/**
* @no_priolist: priority lists disabled
*/
bool no_priolist;
/**
* @submit_reg: gen-specific execlist submission register
* set to the ExecList Submission Port (elsp) register pre-Gen11 and to
* the ExecList Submission Queue Contents register array for Gen11+
*/
u32 __iomem *submit_reg;
/**
* @ctrl_reg: the enhanced execlists control register, used to load the
* submit queue on the HW and to request preemptions to idle
*/
u32 __iomem *ctrl_reg;
/**
* @port: execlist port states
*
* For each hardware ELSP (ExecList Submission Port) we keep
* track of the last request and the number of times we submitted
* that port to hw. We then count the number of times the hw reports
* a context completion or preemption. As only one context can
* be active on hw, we limit resubmission of context to port[0]. This
* is called Lite Restore, of the context.
*/
struct execlist_port {
/**
* @request_count: combined request and submission count
*/
struct i915_request *request_count;
#define EXECLIST_COUNT_BITS 2
#define port_request(p) ptr_mask_bits((p)->request_count, EXECLIST_COUNT_BITS)
#define port_count(p) ptr_unmask_bits((p)->request_count, EXECLIST_COUNT_BITS)
#define port_pack(rq, count) ptr_pack_bits(rq, count, EXECLIST_COUNT_BITS)
#define port_unpack(p, count) ptr_unpack_bits((p)->request_count, count, EXECLIST_COUNT_BITS)
#define port_set(p, packed) ((p)->request_count = (packed))
#define port_isset(p) ((p)->request_count)
#define port_index(p, execlists) ((p) - (execlists)->port)
/**
* @context_id: context ID for port
*/
GEM_DEBUG_DECL(u32 context_id);
#define EXECLIST_MAX_PORTS 2
} port[EXECLIST_MAX_PORTS];
/**
* @active: is the HW active? We consider the HW as active after
* submitting any context for execution and until we have seen the
* last context completion event. After that, we do not expect any
* more events until we submit, and so can park the HW.
*
* As we have a small number of different sources from which we feed
* the HW, we track the state of each inside a single bitfield.
*/
unsigned int active;
#define EXECLISTS_ACTIVE_USER 0
#define EXECLISTS_ACTIVE_PREEMPT 1
#define EXECLISTS_ACTIVE_HWACK 2
/**
* @port_mask: number of execlist ports - 1
*/
unsigned int port_mask;
/**
* @queue_priority_hint: Highest pending priority.
*
* When we add requests into the queue, or adjust the priority of
* executing requests, we compute the maximum priority of those
* pending requests. We can then use this value to determine if
* we need to preempt the executing requests to service the queue.
* However, since the we may have recorded the priority of an inflight
* request we wanted to preempt but since completed, at the time of
* dequeuing the priority hint may no longer may match the highest
* available request priority.
*/
int queue_priority_hint;
/**
* @queue: queue of requests, in priority lists
*/
struct rb_root_cached queue;
/**
* @csb_write: control register for Context Switch buffer
*
* Note this register may be either mmio or HWSP shadow.
*/
u32 *csb_write;
/**
* @csb_status: status array for Context Switch buffer
*
* Note these register may be either mmio or HWSP shadow.
*/
u32 *csb_status;
/**
* @preempt_complete_status: expected CSB upon completing preemption
*/
u32 preempt_complete_status;
/**
* @csb_head: context status buffer head
*/
u8 csb_head;
I915_SELFTEST_DECLARE(struct st_preempt_hang preempt_hang;)
};
#define INTEL_ENGINE_CS_MAX_NAME 8
struct intel_engine_cs {
struct drm_i915_private *i915;
char name[INTEL_ENGINE_CS_MAX_NAME];
enum intel_engine_id id;
unsigned int hw_id;
unsigned int guc_id;
intel_engine_mask_t mask;
u8 uabi_class;
u8 class;
u8 instance;
u32 context_size;
u32 mmio_base;
struct intel_ring *buffer;
struct i915_timeline timeline;
struct drm_i915_gem_object *default_state;
void *pinned_default_state;
/* Rather than have every client wait upon all user interrupts,
* with the herd waking after every interrupt and each doing the
* heavyweight seqno dance, we delegate the task (of being the
* bottom-half of the user interrupt) to the first client. After
* every interrupt, we wake up one client, who does the heavyweight
* coherent seqno read and either goes back to sleep (if incomplete),
* or wakes up all the completed clients in parallel, before then
* transferring the bottom-half status to the next client in the queue.
*
* Compared to walking the entire list of waiters in a single dedicated
* bottom-half, we reduce the latency of the first waiter by avoiding
* a context switch, but incur additional coherent seqno reads when
* following the chain of request breadcrumbs. Since it is most likely
* that we have a single client waiting on each seqno, then reducing
* the overhead of waking that client is much preferred.
*/
struct intel_breadcrumbs {
spinlock_t irq_lock;
struct list_head signalers;
struct irq_work irq_work; /* for use from inside irq_lock */
unsigned int irq_enabled;
bool irq_armed;
} breadcrumbs;
struct intel_engine_pmu {
/**
* @enable: Bitmask of enable sample events on this engine.
*
* Bits correspond to sample event types, for instance
* I915_SAMPLE_QUEUED is bit 0 etc.
*/
u32 enable;
/**
* @enable_count: Reference count for the enabled samplers.
*
* Index number corresponds to @enum drm_i915_pmu_engine_sample.
*/
unsigned int enable_count[I915_ENGINE_SAMPLE_COUNT];
/**
* @sample: Counter values for sampling events.
*
* Our internal timer stores the current counters in this field.
*
* Index number corresponds to @enum drm_i915_pmu_engine_sample.
*/
struct i915_pmu_sample sample[I915_ENGINE_SAMPLE_COUNT];
} pmu;
/*
* A pool of objects to use as shadow copies of client batch buffers
* when the command parser is enabled. Prevents the client from
* modifying the batch contents after software parsing.
*/
struct i915_gem_batch_pool batch_pool;
struct intel_hw_status_page status_page;
struct i915_ctx_workarounds wa_ctx;
struct i915_wa_list ctx_wa_list;
struct i915_wa_list wa_list;
struct i915_wa_list whitelist;
u32 irq_keep_mask; /* always keep these interrupts */
u32 irq_enable_mask; /* bitmask to enable ring interrupt */
void (*irq_enable)(struct intel_engine_cs *engine);
void (*irq_disable)(struct intel_engine_cs *engine);
int (*init_hw)(struct intel_engine_cs *engine);
struct {
void (*prepare)(struct intel_engine_cs *engine);
void (*reset)(struct intel_engine_cs *engine, bool stalled);
void (*finish)(struct intel_engine_cs *engine);
} reset;
void (*park)(struct intel_engine_cs *engine);
void (*unpark)(struct intel_engine_cs *engine);
void (*set_default_submission)(struct intel_engine_cs *engine);
struct intel_context *(*context_pin)(struct intel_engine_cs *engine,
struct i915_gem_context *ctx);
int (*request_alloc)(struct i915_request *rq);
int (*init_context)(struct i915_request *rq);
int (*emit_flush)(struct i915_request *request, u32 mode);
#define EMIT_INVALIDATE BIT(0)
#define EMIT_FLUSH BIT(1)
#define EMIT_BARRIER (EMIT_INVALIDATE | EMIT_FLUSH)
int (*emit_bb_start)(struct i915_request *rq,
u64 offset, u32 length,
unsigned int dispatch_flags);
#define I915_DISPATCH_SECURE BIT(0)
#define I915_DISPATCH_PINNED BIT(1)
int (*emit_init_breadcrumb)(struct i915_request *rq);
u32 *(*emit_fini_breadcrumb)(struct i915_request *rq,
u32 *cs);
unsigned int emit_fini_breadcrumb_dw;
/* Pass the request to the hardware queue (e.g. directly into
* the legacy ringbuffer or to the end of an execlist).
*
* This is called from an atomic context with irqs disabled; must
* be irq safe.
*/
void (*submit_request)(struct i915_request *rq);
/*
* Call when the priority on a request has changed and it and its
* dependencies may need rescheduling. Note the request itself may
* not be ready to run!
*/
void (*schedule)(struct i915_request *request,
const struct i915_sched_attr *attr);
/*
* Cancel all requests on the hardware, or queued for execution.
* This should only cancel the ready requests that have been
* submitted to the engine (via the engine->submit_request callback).
* This is called when marking the device as wedged.
*/
void (*cancel_requests)(struct intel_engine_cs *engine);
void (*cleanup)(struct intel_engine_cs *engine);
struct intel_engine_execlists execlists;
/* Contexts are pinned whilst they are active on the GPU. The last
* context executed remains active whilst the GPU is idle - the
* switch away and write to the context object only occurs on the
* next execution. Contexts are only unpinned on retirement of the
* following request ensuring that we can always write to the object
* on the context switch even after idling. Across suspend, we switch
* to the kernel context and trash it as the save may not happen
* before the hardware is powered down.
*/
struct intel_context *last_retired_context;
/* status_notifier: list of callbacks for context-switch changes */
struct atomic_notifier_head context_status_notifier;
struct intel_engine_hangcheck hangcheck;
#define I915_ENGINE_NEEDS_CMD_PARSER BIT(0)
#define I915_ENGINE_SUPPORTS_STATS BIT(1)
#define I915_ENGINE_HAS_PREEMPTION BIT(2)
#define I915_ENGINE_HAS_SEMAPHORES BIT(3)
unsigned int flags;
/*
* Table of commands the command parser needs to know about
* for this engine.
*/
DECLARE_HASHTABLE(cmd_hash, I915_CMD_HASH_ORDER);
/*
* Table of registers allowed in commands that read/write registers.
*/
const struct drm_i915_reg_table *reg_tables;
int reg_table_count;
/*
* Returns the bitmask for the length field of the specified command.
* Return 0 for an unrecognized/invalid command.
*
* If the command parser finds an entry for a command in the engine's
* cmd_tables, it gets the command's length based on the table entry.
* If not, it calls this function to determine the per-engine length
* field encoding for the command (i.e. different opcode ranges use
* certain bits to encode the command length in the header).
*/
u32 (*get_cmd_length_mask)(u32 cmd_header);
struct {
/**
* @lock: Lock protecting the below fields.
*/
seqlock_t lock;
/**
* @enabled: Reference count indicating number of listeners.
*/
unsigned int enabled;
/**
* @active: Number of contexts currently scheduled in.
*/
unsigned int active;
/**
* @enabled_at: Timestamp when busy stats were enabled.
*/
ktime_t enabled_at;
/**
* @start: Timestamp of the last idle to active transition.
*
* Idle is defined as active == 0, active is active > 0.
*/
ktime_t start;
/**
* @total: Total time this engine was busy.
*
* Accumulated time not counting the most recent block in cases
* where engine is currently busy (active > 0).
*/
ktime_t total;
} stats;
};
static inline bool
intel_engine_needs_cmd_parser(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_NEEDS_CMD_PARSER;
}
static inline bool
intel_engine_supports_stats(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_SUPPORTS_STATS;
}
static inline bool
intel_engine_has_preemption(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_HAS_PREEMPTION;
}
static inline bool
intel_engine_has_semaphores(const struct intel_engine_cs *engine)
{
return engine->flags & I915_ENGINE_HAS_SEMAPHORES;
}
void intel_engines_set_scheduler_caps(struct drm_i915_private *i915);
static inline bool __execlists_need_preempt(int prio, int last)

13
drivers/gpu/drm/i915/intel_workarounds.h
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@ -9,18 +9,7 @@
#include <linux/slab.h>
struct i915_wa {
i915_reg_t reg;
u32 mask;
u32 val;
};
struct i915_wa_list {
const char *name;
struct i915_wa *list;
unsigned int count;
unsigned int wa_count;
};
#include "intel_workarounds_types.h"
static inline void intel_wa_list_free(struct i915_wa_list *wal)
{

27
drivers/gpu/drm/i915/intel_workarounds_types.h Normal file
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@ -0,0 +1,27 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2014-2018 Intel Corporation
*/
#ifndef __INTEL_WORKAROUNDS_TYPES_H__
#define __INTEL_WORKAROUNDS_TYPES_H__
#include <linux/types.h>
#include "i915_reg.h"
struct i915_wa {
i915_reg_t reg;
u32 mask;
u32 val;
};
struct i915_wa_list {
const char *name;
struct i915_wa *list;
unsigned int count;
unsigned int wa_count;
};
#endif /* __INTEL_WORKAROUNDS_TYPES_H__ */

7
drivers/gpu/drm/i915/test_i915_active_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "i915_active_types.h"

7
drivers/gpu/drm/i915/test_i915_gem_context_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "i915_gem_context_types.h"

7
drivers/gpu/drm/i915/test_i915_timeline_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "i915_timeline_types.h"

7
drivers/gpu/drm/i915/test_intel_context_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "intel_context_types.h"

7
drivers/gpu/drm/i915/test_intel_engine_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "intel_engine_types.h"

7
drivers/gpu/drm/i915/test_intel_workarounds_types_standalone.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#include "intel_workarounds_types.h"