/*
* 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_VMA_H__
#define __I915_VMA_H__
#include <linux/io-mapping.h>
#include <linux/rbtree.h>
#include <drm/drm_mm.h>
#include "gt/intel_ggtt_fencing.h"
#include "gem/i915_gem_object.h"
#include "i915_gem_gtt.h"
#include "i915_active.h"
#include "i915_request.h"
#include "i915_vma_resource.h"
#include "i915_vma_types.h"
struct i915_vma *
i915_vma_instance(struct drm_i915_gem_object *obj,
struct i915_address_space *vm,
const struct i915_gtt_view *view);
void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags);
#define I915_VMA_RELEASE_MAP BIT(0)
static inline bool i915_vma_is_active(const struct i915_vma *vma)
{
return !i915_active_is_idle(&vma->active);
}
/* do not reserve memory to prevent deadlocks */
#define __EXEC_OBJECT_NO_RESERVE BIT(31)
#define __EXEC_OBJECT_NO_REQUEST_AWAIT BIT(30)
int __must_check _i915_vma_move_to_active(struct i915_vma *vma,
struct i915_request *rq,
struct dma_fence *fence,
unsigned int flags);
static inline int __must_check
i915_vma_move_to_active(struct i915_vma *vma, struct i915_request *rq,
unsigned int flags)
{
return _i915_vma_move_to_active(vma, rq, &rq->fence, flags);
}
#define __i915_vma_flags(v) ((unsigned long *)&(v)->flags.counter)
static inline bool i915_vma_is_ggtt(const struct i915_vma *vma)
{
return test_bit(I915_VMA_GGTT_BIT, __i915_vma_flags(vma));
}
static inline bool i915_vma_is_dpt(const struct i915_vma *vma)
{
return i915_is_dpt(vma->vm);
}
static inline bool i915_vma_has_ggtt_write(const struct i915_vma *vma)
{
return test_bit(I915_VMA_GGTT_WRITE_BIT, __i915_vma_flags(vma));
}
static inline void i915_vma_set_ggtt_write(struct i915_vma *vma)
{
GEM_BUG_ON(!i915_vma_is_ggtt(vma));
set_bit(I915_VMA_GGTT_WRITE_BIT, __i915_vma_flags(vma));
}
static inline bool i915_vma_unset_ggtt_write(struct i915_vma *vma)
{
return test_and_clear_bit(I915_VMA_GGTT_WRITE_BIT,
__i915_vma_flags(vma));
}
void i915_vma_flush_writes(struct i915_vma *vma);
static inline bool i915_vma_is_map_and_fenceable(const struct i915_vma *vma)
{
return test_bit(I915_VMA_CAN_FENCE_BIT, __i915_vma_flags(vma));
}
static inline bool i915_vma_set_userfault(struct i915_vma *vma)
{
GEM_BUG_ON(!i915_vma_is_map_and_fenceable(vma));
return test_and_set_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
}
static inline void i915_vma_unset_userfault(struct i915_vma *vma)
{
return clear_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
}
static inline bool i915_vma_has_userfault(const struct i915_vma *vma)
{
return test_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
}
static inline bool i915_vma_is_closed(const struct i915_vma *vma)
{
return !list_empty(&vma->closed_link);
}
/* Internal use only. */
static inline u64 __i915_vma_size(const struct i915_vma *vma)
{
return vma->node.size - 2 * vma->guard;
}
/**
* i915_vma_size - Obtain the va range size of the vma
* @vma: The vma
*
* GPU virtual address space may be allocated with padding. This
* function returns the effective virtual address range size
* with padding subtracted.
*
* Return: The effective virtual address range size.
*/
static inline u64 i915_vma_size(const struct i915_vma *vma)
{
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
return __i915_vma_size(vma);
}
/* Internal use only. */
static inline u64 __i915_vma_offset(const struct i915_vma *vma)
{
/* The actual start of the vma->pages is after the guard pages. */
return vma->node.start + vma->guard;
}
/**
* i915_vma_offset - Obtain the va offset of the vma
* @vma: The vma
*
* GPU virtual address space may be allocated with padding. This
* function returns the effective virtual address offset the gpu
* should use to access the bound data.
*
* Return: The effective virtual address offset.
*/
static inline u64 i915_vma_offset(const struct i915_vma *vma)
{
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
return __i915_vma_offset(vma);
}
static inline u32 i915_ggtt_offset(const struct i915_vma *vma)
{
GEM_BUG_ON(!i915_vma_is_ggtt(vma));
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
GEM_BUG_ON(upper_32_bits(i915_vma_offset(vma)));
GEM_BUG_ON(upper_32_bits(i915_vma_offset(vma) +
i915_vma_size(vma) - 1));
return lower_32_bits(i915_vma_offset(vma));
}
static inline u32 i915_ggtt_pin_bias(struct i915_vma *vma)
{
return i915_vm_to_ggtt(vma->vm)->pin_bias;
}
static inline struct i915_vma *i915_vma_get(struct i915_vma *vma)
{
i915_gem_object_get(vma->obj);
return vma;
}
static inline struct i915_vma *i915_vma_tryget(struct i915_vma *vma)
{
if (likely(kref_get_unless_zero(&vma->obj->base.refcount)))
return vma;
return NULL;
}
static inline void i915_vma_put(struct i915_vma *vma)
{
i915_gem_object_put(vma->obj);
}
static inline long
i915_vma_compare(struct i915_vma *vma,
struct i915_address_space *vm,
const struct i915_gtt_view *view)
{
ptrdiff_t cmp;
GEM_BUG_ON(view && !i915_is_ggtt_or_dpt(vm));
cmp = ptrdiff(vma->vm, vm);
if (cmp)
return cmp;
BUILD_BUG_ON(I915_GTT_VIEW_NORMAL != 0);
cmp = vma->gtt_view.type;
if (!view)
return cmp;
cmp -= view->type;
if (cmp)
return cmp;
assert_i915_gem_gtt_types();
/* gtt_view.type also encodes its size so that we both distinguish
* different views using it as a "type" and also use a compact (no
* accessing of uninitialised padding bytes) memcmp without storing
* an extra parameter or adding more code.
*
* To ensure that the memcmp is valid for all branches of the union,
* even though the code looks like it is just comparing one branch,
* we assert above that all branches have the same address, and that
* each branch has a unique type/size.
*/
BUILD_BUG_ON(I915_GTT_VIEW_NORMAL >= I915_GTT_VIEW_PARTIAL);
BUILD_BUG_ON(I915_GTT_VIEW_PARTIAL >= I915_GTT_VIEW_ROTATED);
BUILD_BUG_ON(I915_GTT_VIEW_ROTATED >= I915_GTT_VIEW_REMAPPED);
BUILD_BUG_ON(offsetof(typeof(*view), rotated) !=
offsetof(typeof(*view), partial));
BUILD_BUG_ON(offsetof(typeof(*view), rotated) !=
offsetof(typeof(*view), remapped));
return memcmp(&vma->gtt_view.partial, &view->partial, view->type);
}
struct i915_vma_work *i915_vma_work(void);
int i915_vma_bind(struct i915_vma *vma,
unsigned int pat_index,
u32 flags,
struct i915_vma_work *work,
struct i915_vma_resource *vma_res);
bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long color);
bool i915_vma_misplaced(const struct i915_vma *vma,
u64 size, u64 alignment, u64 flags);
void __i915_vma_set_map_and_fenceable(struct i915_vma *vma);
void i915_vma_revoke_mmap(struct i915_vma *vma);
void vma_invalidate_tlb(struct i915_address_space *vm, u32 *tlb);
struct dma_fence *__i915_vma_evict(struct i915_vma *vma, bool async);
int __i915_vma_unbind(struct i915_vma *vma);
int __must_check i915_vma_unbind(struct i915_vma *vma);
int __must_check i915_vma_unbind_async(struct i915_vma *vma, bool trylock_vm);
int __must_check i915_vma_unbind_unlocked(struct i915_vma *vma);
void i915_vma_unlink_ctx(struct i915_vma *vma);
void i915_vma_close(struct i915_vma *vma);
void i915_vma_reopen(struct i915_vma *vma);
void i915_vma_destroy_locked(struct i915_vma *vma);
void i915_vma_destroy(struct i915_vma *vma);
#define assert_vma_held(vma) dma_resv_assert_held((vma)->obj->base.resv)
static inline void i915_vma_lock(struct i915_vma *vma)
{
dma_resv_lock(vma->obj->base.resv, NULL);
}
static inline void i915_vma_unlock(struct i915_vma *vma)
{
dma_resv_unlock(vma->obj->base.resv);
}
int __must_check
i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
u64 size, u64 alignment, u64 flags);
static inline int __must_check
i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
{
struct i915_gem_ww_ctx ww;
int err;
i915_gem_ww_ctx_init(&ww, true);
retry:
err = i915_gem_object_lock(vma->obj, &ww);
if (!err)
err = i915_vma_pin_ww(vma, &ww, size, alignment, flags);
if (err == -EDEADLK) {
err = i915_gem_ww_ctx_backoff(&ww);
if (!err)
goto retry;
}
i915_gem_ww_ctx_fini(&ww);
return err;
}
int i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
u32 align, unsigned int flags);
static inline int i915_vma_pin_count(const struct i915_vma *vma)
{
return atomic_read(&vma->flags) & I915_VMA_PIN_MASK;
}
static inline bool i915_vma_is_pinned(const struct i915_vma *vma)
{
return i915_vma_pin_count(vma);
}
static inline void __i915_vma_pin(struct i915_vma *vma)
{
atomic_inc(&vma->flags);
GEM_BUG_ON(!i915_vma_is_pinned(vma));
}
static inline void __i915_vma_unpin(struct i915_vma *vma)
{
GEM_BUG_ON(!i915_vma_is_pinned(vma));
atomic_dec(&vma->flags);
}
static inline void i915_vma_unpin(struct i915_vma *vma)
{
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
__i915_vma_unpin(vma);
}
static inline bool i915_vma_is_bound(const struct i915_vma *vma,
unsigned int where)
{
return atomic_read(&vma->flags) & where;
}
static inline bool i915_node_color_differs(const struct drm_mm_node *node,
unsigned long color)
{
return drm_mm_node_allocated(node) && node->color != color;
}
/**
* i915_vma_pin_iomap - calls ioremap_wc to map the GGTT VMA via the aperture
* @vma: VMA to iomap
*
* The passed in VMA has to be pinned in the global GTT mappable region.
* An extra pinning of the VMA is acquired for the return iomapping,
* the caller must call i915_vma_unpin_iomap to relinquish the pinning
* after the iomapping is no longer required.
*
* Returns a valid iomapped pointer or ERR_PTR.
*/
void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
/**
* i915_vma_unpin_iomap - unpins the mapping returned from i915_vma_iomap
* @vma: VMA to unpin
*
* Unpins the previously iomapped VMA from i915_vma_pin_iomap().
*
* This function is only valid to be called on a VMA previously
* iomapped by the caller with i915_vma_pin_iomap().
*/
void i915_vma_unpin_iomap(struct i915_vma *vma);
/**
* i915_vma_pin_fence - pin fencing state
* @vma: vma to pin fencing for
*
* This pins the fencing state (whether tiled or untiled) to make sure the
* vma (and its object) is ready to be used as a scanout target. Fencing
* status must be synchronize first by calling i915_vma_get_fence():
*
* The resulting fence pin reference must be released again with
* i915_vma_unpin_fence().
*
* Returns:
* True if the vma has a fence, false otherwise.
*/
int __must_check i915_vma_pin_fence(struct i915_vma *vma);
void i915_vma_revoke_fence(struct i915_vma *vma);
int __i915_vma_pin_fence(struct i915_vma *vma);
static inline void __i915_vma_unpin_fence(struct i915_vma *vma)
{
GEM_BUG_ON(atomic_read(&vma->fence->pin_count) <= 0);
atomic_dec(&vma->fence->pin_count);
}
/**
* i915_vma_unpin_fence - unpin fencing state
* @vma: vma to unpin fencing for
*
* This releases the fence pin reference acquired through
* i915_vma_pin_fence. It will handle both objects with and without an
* attached fence correctly, callers do not need to distinguish this.
*/
static inline void
i915_vma_unpin_fence(struct i915_vma *vma)
{
if (vma->fence)
__i915_vma_unpin_fence(vma);
}
static inline int i915_vma_fence_id(const struct i915_vma *vma)
{
return vma->fence ? vma->fence->id : -1;
}
void i915_vma_parked(struct intel_gt *gt);
static inline bool i915_vma_is_scanout(const struct i915_vma *vma)
{
return test_bit(I915_VMA_SCANOUT_BIT, __i915_vma_flags(vma));
}
static inline void i915_vma_mark_scanout(struct i915_vma *vma)
{
set_bit(I915_VMA_SCANOUT_BIT, __i915_vma_flags(vma));
}
static inline void i915_vma_clear_scanout(struct i915_vma *vma)
{
clear_bit(I915_VMA_SCANOUT_BIT, __i915_vma_flags(vma));
}
void i915_ggtt_clear_scanout(struct drm_i915_gem_object *obj);
#define for_each_until(cond) if (cond) break; else
/**
* for_each_ggtt_vma - Iterate over the GGTT VMA belonging to an object.
* @V: the #i915_vma iterator
* @OBJ: the #drm_i915_gem_object
*
* GGTT VMA are placed at the being of the object's vma_list, see
* vma_create(), so we can stop our walk as soon as we see a ppgtt VMA,
* or the list is empty ofc.
*/
#define for_each_ggtt_vma(V, OBJ) \
list_for_each_entry(V, &(OBJ)->vma.list, obj_link) \
for_each_until(!i915_vma_is_ggtt(V))
struct i915_vma *i915_vma_make_unshrinkable(struct i915_vma *vma);
void i915_vma_make_shrinkable(struct i915_vma *vma);
void i915_vma_make_purgeable(struct i915_vma *vma);
int i915_vma_wait_for_bind(struct i915_vma *vma);
static inline int i915_vma_sync(struct i915_vma *vma)
{
/* Wait for the asynchronous bindings and pending GPU reads */
return i915_active_wait(&vma->active);
}
/**
* i915_vma_get_current_resource - Get the current resource of the vma
* @vma: The vma to get the current resource from.
*
* It's illegal to call this function if the vma is not bound.
*
* Return: A refcounted pointer to the current vma resource
* of the vma, assuming the vma is bound.
*/
static inline struct i915_vma_resource *
i915_vma_get_current_resource(struct i915_vma *vma)
{
return i915_vma_resource_get(vma->resource);
}
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
void i915_vma_resource_init_from_vma(struct i915_vma_resource *vma_res,
struct i915_vma *vma);
#endif
void i915_vma_module_exit(void);
int i915_vma_module_init(void);
I915_SELFTEST_DECLARE(int i915_vma_get_pages(struct i915_vma *vma));
I915_SELFTEST_DECLARE(void i915_vma_put_pages(struct i915_vma *vma));
#endif
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