487 lines
14 KiB
C
487 lines
14 KiB
C
|
/*
|
||
|
|
* Copyright © 2016 Intel Corporation
|
||
|
|
*
|
||
|
|
* 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, sublicense,
|
||
|
|
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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_GEM_OBJECT_H__
|
||
|
|
#define __I915_GEM_OBJECT_H__
|
||
|
|
|
||
|
|
#include <linux/reservation.h>
|
||
|
|
|
||
|
|
#include <drm/drm_vma_manager.h>
|
||
|
|
#include <drm/drm_gem.h>
|
||
|
|
#include <drm/drmP.h>
|
||
|
|
|
||
|
|
#include <drm/i915_drm.h>
|
||
|
|
|
||
|
|
#include "i915_request.h"
|
||
|
|
#include "i915_selftest.h"
|
||
|
|
|
||
|
|
struct drm_i915_gem_object;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* struct i915_lut_handle tracks the fast lookups from handle to vma used
|
||
|
|
* for execbuf. Although we use a radixtree for that mapping, in order to
|
||
|
|
* remove them as the object or context is closed, we need a secondary list
|
||
|
|
* and a translation entry (i915_lut_handle).
|
||
|
|
*/
|
||
|
|
struct i915_lut_handle {
|
||
|
|
struct list_head obj_link;
|
||
|
|
struct list_head ctx_link;
|
||
|
|
struct i915_gem_context *ctx;
|
||
|
|
u32 handle;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct drm_i915_gem_object_ops {
|
||
|
|
unsigned int flags;
|
||
|
|
#define I915_GEM_OBJECT_HAS_STRUCT_PAGE BIT(0)
|
||
|
|
#define I915_GEM_OBJECT_IS_SHRINKABLE BIT(1)
|
||
|
|
#define I915_GEM_OBJECT_IS_PROXY BIT(2)
|
||
|
|
|
||
|
|
/* Interface between the GEM object and its backing storage.
|
||
|
|
* get_pages() is called once prior to the use of the associated set
|
||
|
|
* of pages before to binding them into the GTT, and put_pages() is
|
||
|
|
* called after we no longer need them. As we expect there to be
|
||
|
|
* associated cost with migrating pages between the backing storage
|
||
|
|
* and making them available for the GPU (e.g. clflush), we may hold
|
||
|
|
* onto the pages after they are no longer referenced by the GPU
|
||
|
|
* in case they may be used again shortly (for example migrating the
|
||
|
|
* pages to a different memory domain within the GTT). put_pages()
|
||
|
|
* will therefore most likely be called when the object itself is
|
||
|
|
* being released or under memory pressure (where we attempt to
|
||
|
|
* reap pages for the shrinker).
|
||
|
|
*/
|
||
|
|
int (*get_pages)(struct drm_i915_gem_object *);
|
||
|
|
void (*put_pages)(struct drm_i915_gem_object *, struct sg_table *);
|
||
|
|
|
||
|
|
int (*pwrite)(struct drm_i915_gem_object *,
|
||
|
|
const struct drm_i915_gem_pwrite *);
|
||
|
|
|
||
|
|
int (*dmabuf_export)(struct drm_i915_gem_object *);
|
||
|
|
void (*release)(struct drm_i915_gem_object *);
|
||
|
|
};
|
||
|
|
|
||
|
|
struct drm_i915_gem_object {
|
||
|
|
struct drm_gem_object base;
|
||
|
|
|
||
|
|
const struct drm_i915_gem_object_ops *ops;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @vma_list: List of VMAs backed by this object
|
||
|
|
*
|
||
|
|
* The VMA on this list are ordered by type, all GGTT vma are placed
|
||
|
|
* at the head and all ppGTT vma are placed at the tail. The different
|
||
|
|
* types of GGTT vma are unordered between themselves, use the
|
||
|
|
* @vma_tree (which has a defined order between all VMA) to find an
|
||
|
|
* exact match.
|
||
|
|
*/
|
||
|
|
struct list_head vma_list;
|
||
|
|
/**
|
||
|
|
* @vma_tree: Ordered tree of VMAs backed by this object
|
||
|
|
*
|
||
|
|
* All VMA created for this object are placed in the @vma_tree for
|
||
|
|
* fast retrieval via a binary search in i915_vma_instance().
|
||
|
|
* They are also added to @vma_list for easy iteration.
|
||
|
|
*/
|
||
|
|
struct rb_root vma_tree;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @lut_list: List of vma lookup entries in use for this object.
|
||
|
|
*
|
||
|
|
* If this object is closed, we need to remove all of its VMA from
|
||
|
|
* the fast lookup index in associated contexts; @lut_list provides
|
||
|
|
* this translation from object to context->handles_vma.
|
||
|
|
*/
|
||
|
|
struct list_head lut_list;
|
||
|
|
|
||
|
|
/** Stolen memory for this object, instead of being backed by shmem. */
|
||
|
|
struct drm_mm_node *stolen;
|
||
|
|
union {
|
||
|
|
struct rcu_head rcu;
|
||
|
|
struct llist_node freed;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Whether the object is currently in the GGTT mmap.
|
||
|
|
*/
|
||
|
|
unsigned int userfault_count;
|
||
|
|
struct list_head userfault_link;
|
||
|
|
|
||
|
|
struct list_head batch_pool_link;
|
||
|
|
I915_SELFTEST_DECLARE(struct list_head st_link);
|
||
|
|
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Have we taken a reference for the object for incomplete GPU
|
||
|
|
* activity?
|
||
|
|
*/
|
||
|
|
#define I915_BO_ACTIVE_REF 0
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Is the object to be mapped as read-only to the GPU
|
||
|
|
* Only honoured if hardware has relevant pte bit
|
||
|
|
*/
|
||
|
|
unsigned int cache_level:3;
|
||
|
|
unsigned int cache_coherent:2;
|
||
|
|
#define I915_BO_CACHE_COHERENT_FOR_READ BIT(0)
|
||
|
|
#define I915_BO_CACHE_COHERENT_FOR_WRITE BIT(1)
|
||
|
|
unsigned int cache_dirty:1;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @read_domains: Read memory domains.
|
||
|
|
*
|
||
|
|
* These monitor which caches contain read/write data related to the
|
||
|
|
* object. When transitioning from one set of domains to another,
|
||
|
|
* the driver is called to ensure that caches are suitably flushed and
|
||
|
|
* invalidated.
|
||
|
|
*/
|
||
|
|
u16 read_domains;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @write_domain: Corresponding unique write memory domain.
|
||
|
|
*/
|
||
|
|
u16 write_domain;
|
||
|
|
|
||
|
|
atomic_t frontbuffer_bits;
|
||
|
|
unsigned int frontbuffer_ggtt_origin; /* write once */
|
||
|
|
struct i915_gem_active frontbuffer_write;
|
||
|
|
|
||
|
|
/** Current tiling stride for the object, if it's tiled. */
|
||
|
|
unsigned int tiling_and_stride;
|
||
|
|
#define FENCE_MINIMUM_STRIDE 128 /* See i915_tiling_ok() */
|
||
|
|
#define TILING_MASK (FENCE_MINIMUM_STRIDE-1)
|
||
|
|
#define STRIDE_MASK (~TILING_MASK)
|
||
|
|
|
||
|
|
/** Count of VMA actually bound by this object */
|
||
|
|
unsigned int bind_count;
|
||
|
|
unsigned int active_count;
|
||
|
|
/** Count of how many global VMA are currently pinned for use by HW */
|
||
|
|
unsigned int pin_global;
|
||
|
|
|
||
|
|
struct {
|
||
|
|
struct mutex lock; /* protects the pages and their use */
|
||
|
|
atomic_t pages_pin_count;
|
||
|
|
|
||
|
|
struct sg_table *pages;
|
||
|
|
void *mapping;
|
||
|
|
|
||
|
|
/* TODO: whack some of this into the error state */
|
||
|
|
struct i915_page_sizes {
|
||
|
|
/**
|
||
|
|
* The sg mask of the pages sg_table. i.e the mask of
|
||
|
|
* of the lengths for each sg entry.
|
||
|
|
*/
|
||
|
|
unsigned int phys;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The gtt page sizes we are allowed to use given the
|
||
|
|
* sg mask and the supported page sizes. This will
|
||
|
|
* express the smallest unit we can use for the whole
|
||
|
|
* object, as well as the larger sizes we may be able
|
||
|
|
* to use opportunistically.
|
||
|
|
*/
|
||
|
|
unsigned int sg;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The actual gtt page size usage. Since we can have
|
||
|
|
* multiple vma associated with this object we need to
|
||
|
|
* prevent any trampling of state, hence a copy of this
|
||
|
|
* struct also lives in each vma, therefore the gtt
|
||
|
|
* value here should only be read/write through the vma.
|
||
|
|
*/
|
||
|
|
unsigned int gtt;
|
||
|
|
} page_sizes;
|
||
|
|
|
||
|
|
I915_SELFTEST_DECLARE(unsigned int page_mask);
|
||
|
|
|
||
|
|
struct i915_gem_object_page_iter {
|
||
|
|
struct scatterlist *sg_pos;
|
||
|
|
unsigned int sg_idx; /* in pages, but 32bit eek! */
|
||
|
|
|
||
|
|
struct radix_tree_root radix;
|
||
|
|
struct mutex lock; /* protects this cache */
|
||
|
|
} get_page;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Element within i915->mm.unbound_list or i915->mm.bound_list,
|
||
|
|
* locked by i915->mm.obj_lock.
|
||
|
|
*/
|
||
|
|
struct list_head link;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Advice: are the backing pages purgeable?
|
||
|
|
*/
|
||
|
|
unsigned int madv:2;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is set if the object has been written to since the
|
||
|
|
* pages were last acquired.
|
||
|
|
*/
|
||
|
|
bool dirty:1;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is set if the object has been pinned due to unknown
|
||
|
|
* swizzling.
|
||
|
|
*/
|
||
|
|
bool quirked:1;
|
||
|
|
} mm;
|
||
|
|
|
||
|
|
/** Breadcrumb of last rendering to the buffer.
|
||
|
|
* There can only be one writer, but we allow for multiple readers.
|
||
|
|
* If there is a writer that necessarily implies that all other
|
||
|
|
* read requests are complete - but we may only be lazily clearing
|
||
|
|
* the read requests. A read request is naturally the most recent
|
||
|
|
* request on a ring, so we may have two different write and read
|
||
|
|
* requests on one ring where the write request is older than the
|
||
|
|
* read request. This allows for the CPU to read from an active
|
||
|
|
* buffer by only waiting for the write to complete.
|
||
|
|
*/
|
||
|
|
struct reservation_object *resv;
|
||
|
|
|
||
|
|
/** References from framebuffers, locks out tiling changes. */
|
||
|
|
unsigned int framebuffer_references;
|
||
|
|
|
||
|
|
/** Record of address bit 17 of each page at last unbind. */
|
||
|
|
unsigned long *bit_17;
|
||
|
|
|
||
|
|
union {
|
||
|
|
struct i915_gem_userptr {
|
||
|
|
uintptr_t ptr;
|
||
|
|
|
||
|
|
struct i915_mm_struct *mm;
|
||
|
|
struct i915_mmu_object *mmu_object;
|
||
|
|
struct work_struct *work;
|
||
|
|
} userptr;
|
||
|
|
|
||
|
|
unsigned long scratch;
|
||
|
|
|
||
|
|
void *gvt_info;
|
||
|
|
};
|
||
|
|
|
||
|
|
/** for phys allocated objects */
|
||
|
|
struct drm_dma_handle *phys_handle;
|
||
|
|
|
||
|
|
struct reservation_object __builtin_resv;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline struct drm_i915_gem_object *
|
||
|
|
to_intel_bo(struct drm_gem_object *gem)
|
||
|
|
{
|
||
|
|
/* Assert that to_intel_bo(NULL) == NULL */
|
||
|
|
BUILD_BUG_ON(offsetof(struct drm_i915_gem_object, base));
|
||
|
|
|
||
|
|
return container_of(gem, struct drm_i915_gem_object, base);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle
|
||
|
|
* @filp: DRM file private date
|
||
|
|
* @handle: userspace handle
|
||
|
|
*
|
||
|
|
* Returns:
|
||
|
|
*
|
||
|
|
* A pointer to the object named by the handle if such exists on @filp, NULL
|
||
|
|
* otherwise. This object is only valid whilst under the RCU read lock, and
|
||
|
|
* note carefully the object may be in the process of being destroyed.
|
||
|
|
*/
|
||
|
|
static inline struct drm_i915_gem_object *
|
||
|
|
i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_LOCKDEP
|
||
|
|
WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map));
|
||
|
|
#endif
|
||
|
|
return idr_find(&file->object_idr, handle);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline struct drm_i915_gem_object *
|
||
|
|
i915_gem_object_lookup(struct drm_file *file, u32 handle)
|
||
|
|
{
|
||
|
|
struct drm_i915_gem_object *obj;
|
||
|
|
|
||
|
|
rcu_read_lock();
|
||
|
|
obj = i915_gem_object_lookup_rcu(file, handle);
|
||
|
|
if (obj && !kref_get_unless_zero(&obj->base.refcount))
|
||
|
|
obj = NULL;
|
||
|
|
rcu_read_unlock();
|
||
|
|
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
__deprecated
|
||
|
|
extern struct drm_gem_object *
|
||
|
|
drm_gem_object_lookup(struct drm_file *file, u32 handle);
|
||
|
|
|
||
|
|
__attribute__((nonnull))
|
||
|
|
static inline struct drm_i915_gem_object *
|
||
|
|
i915_gem_object_get(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
drm_gem_object_get(&obj->base);
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
__attribute__((nonnull))
|
||
|
|
static inline void
|
||
|
|
i915_gem_object_put(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
__drm_gem_object_put(&obj->base);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
reservation_object_lock(obj->resv, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
reservation_object_unlock(obj->resv);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
i915_gem_object_set_readonly(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
obj->base.vma_node.readonly = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->base.vma_node.readonly;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->ops->flags & I915_GEM_OBJECT_IS_SHRINKABLE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->ops->flags & I915_GEM_OBJECT_IS_PROXY;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_active(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->active_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_has_active_reference(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return test_bit(I915_BO_ACTIVE_REF, &obj->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
i915_gem_object_set_active_reference(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
lockdep_assert_held(&obj->base.dev->struct_mutex);
|
||
|
|
__set_bit(I915_BO_ACTIVE_REF, &obj->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
i915_gem_object_clear_active_reference(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
lockdep_assert_held(&obj->base.dev->struct_mutex);
|
||
|
|
__clear_bit(I915_BO_ACTIVE_REF, &obj->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __i915_gem_object_release_unless_active(struct drm_i915_gem_object *obj);
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return READ_ONCE(obj->framebuffer_references);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
i915_gem_object_get_tiling(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->tiling_and_stride & TILING_MASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
i915_gem_object_is_tiled(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return i915_gem_object_get_tiling(obj) != I915_TILING_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
i915_gem_object_get_stride(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return obj->tiling_and_stride & STRIDE_MASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
i915_gem_tile_height(unsigned int tiling)
|
||
|
|
{
|
||
|
|
GEM_BUG_ON(!tiling);
|
||
|
|
return tiling == I915_TILING_Y ? 32 : 8;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
i915_gem_object_get_tile_height(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return i915_gem_tile_height(i915_gem_object_get_tiling(obj));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
i915_gem_object_get_tile_row_size(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
return (i915_gem_object_get_stride(obj) *
|
||
|
|
i915_gem_object_get_tile_height(obj));
|
||
|
|
}
|
||
|
|
|
||
|
|
int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj,
|
||
|
|
unsigned int tiling, unsigned int stride);
|
||
|
|
|
||
|
|
static inline struct intel_engine_cs *
|
||
|
|
i915_gem_object_last_write_engine(struct drm_i915_gem_object *obj)
|
||
|
|
{
|
||
|
|
struct intel_engine_cs *engine = NULL;
|
||
|
|
struct dma_fence *fence;
|
||
|
|
|
||
|
|
rcu_read_lock();
|
||
|
|
fence = reservation_object_get_excl_rcu(obj->resv);
|
||
|
|
rcu_read_unlock();
|
||
|
|
|
||
|
|
if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence))
|
||
|
|
engine = to_request(fence)->engine;
|
||
|
|
dma_fence_put(fence);
|
||
|
|
|
||
|
|
return engine;
|
||
|
|
}
|
||
|
|
|
||
|
|
void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj,
|
||
|
|
unsigned int cache_level);
|
||
|
|
void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|