397 lines
11 KiB
C
397 lines
11 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef __I915_VMA_H__
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#define __I915_VMA_H__
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#include <linux/io-mapping.h>
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#include <linux/rbtree.h>
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#include <drm/drm_mm.h>
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#include "gt/intel_ggtt_fencing.h"
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#include "gem/i915_gem_object.h"
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#include "i915_gem_gtt.h"
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#include "i915_active.h"
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#include "i915_request.h"
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#include "i915_vma_types.h"
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struct i915_vma *
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i915_vma_instance(struct drm_i915_gem_object *obj,
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struct i915_address_space *vm,
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const struct i915_ggtt_view *view);
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void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags);
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#define I915_VMA_RELEASE_MAP BIT(0)
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static inline bool i915_vma_is_active(const struct i915_vma *vma)
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{
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return !i915_active_is_idle(&vma->active);
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}
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int __must_check __i915_vma_move_to_active(struct i915_vma *vma,
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struct i915_request *rq);
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int __must_check i915_vma_move_to_active(struct i915_vma *vma,
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struct i915_request *rq,
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unsigned int flags);
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#define __i915_vma_flags(v) ((unsigned long *)&(v)->flags.counter)
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static inline bool i915_vma_is_ggtt(const struct i915_vma *vma)
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{
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return test_bit(I915_VMA_GGTT_BIT, __i915_vma_flags(vma));
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}
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static inline bool i915_vma_has_ggtt_write(const struct i915_vma *vma)
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{
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return test_bit(I915_VMA_GGTT_WRITE_BIT, __i915_vma_flags(vma));
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}
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static inline void i915_vma_set_ggtt_write(struct i915_vma *vma)
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{
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GEM_BUG_ON(!i915_vma_is_ggtt(vma));
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set_bit(I915_VMA_GGTT_WRITE_BIT, __i915_vma_flags(vma));
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}
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static inline bool i915_vma_unset_ggtt_write(struct i915_vma *vma)
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{
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return test_and_clear_bit(I915_VMA_GGTT_WRITE_BIT,
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__i915_vma_flags(vma));
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}
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void i915_vma_flush_writes(struct i915_vma *vma);
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static inline bool i915_vma_is_map_and_fenceable(const struct i915_vma *vma)
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{
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return test_bit(I915_VMA_CAN_FENCE_BIT, __i915_vma_flags(vma));
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}
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static inline bool i915_vma_set_userfault(struct i915_vma *vma)
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{
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GEM_BUG_ON(!i915_vma_is_map_and_fenceable(vma));
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return test_and_set_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
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}
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static inline void i915_vma_unset_userfault(struct i915_vma *vma)
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{
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return clear_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
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}
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static inline bool i915_vma_has_userfault(const struct i915_vma *vma)
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{
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return test_bit(I915_VMA_USERFAULT_BIT, __i915_vma_flags(vma));
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}
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static inline bool i915_vma_is_closed(const struct i915_vma *vma)
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{
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return !list_empty(&vma->closed_link);
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}
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static inline u32 i915_ggtt_offset(const struct i915_vma *vma)
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{
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GEM_BUG_ON(!i915_vma_is_ggtt(vma));
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GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
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GEM_BUG_ON(upper_32_bits(vma->node.start));
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GEM_BUG_ON(upper_32_bits(vma->node.start + vma->node.size - 1));
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return lower_32_bits(vma->node.start);
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}
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static inline u32 i915_ggtt_pin_bias(struct i915_vma *vma)
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{
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return i915_vm_to_ggtt(vma->vm)->pin_bias;
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}
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static inline struct i915_vma *i915_vma_get(struct i915_vma *vma)
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{
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i915_gem_object_get(vma->obj);
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return vma;
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}
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static inline struct i915_vma *i915_vma_tryget(struct i915_vma *vma)
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{
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if (likely(kref_get_unless_zero(&vma->obj->base.refcount)))
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return vma;
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return NULL;
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}
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static inline void i915_vma_put(struct i915_vma *vma)
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{
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i915_gem_object_put(vma->obj);
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}
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static __always_inline ptrdiff_t ptrdiff(const void *a, const void *b)
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{
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return a - b;
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}
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static inline long
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i915_vma_compare(struct i915_vma *vma,
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struct i915_address_space *vm,
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const struct i915_ggtt_view *view)
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{
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ptrdiff_t cmp;
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GEM_BUG_ON(view && !i915_is_ggtt(vm));
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cmp = ptrdiff(vma->vm, vm);
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if (cmp)
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return cmp;
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BUILD_BUG_ON(I915_GGTT_VIEW_NORMAL != 0);
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cmp = vma->ggtt_view.type;
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if (!view)
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return cmp;
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cmp -= view->type;
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if (cmp)
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return cmp;
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assert_i915_gem_gtt_types();
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/* ggtt_view.type also encodes its size so that we both distinguish
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* different views using it as a "type" and also use a compact (no
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* accessing of uninitialised padding bytes) memcmp without storing
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* an extra parameter or adding more code.
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*
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* To ensure that the memcmp is valid for all branches of the union,
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* even though the code looks like it is just comparing one branch,
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* we assert above that all branches have the same address, and that
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* each branch has a unique type/size.
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*/
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BUILD_BUG_ON(I915_GGTT_VIEW_NORMAL >= I915_GGTT_VIEW_PARTIAL);
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BUILD_BUG_ON(I915_GGTT_VIEW_PARTIAL >= I915_GGTT_VIEW_ROTATED);
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BUILD_BUG_ON(I915_GGTT_VIEW_ROTATED >= I915_GGTT_VIEW_REMAPPED);
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BUILD_BUG_ON(offsetof(typeof(*view), rotated) !=
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offsetof(typeof(*view), partial));
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BUILD_BUG_ON(offsetof(typeof(*view), rotated) !=
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offsetof(typeof(*view), remapped));
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return memcmp(&vma->ggtt_view.partial, &view->partial, view->type);
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}
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struct i915_vma_work *i915_vma_work(void);
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int i915_vma_bind(struct i915_vma *vma,
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enum i915_cache_level cache_level,
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u32 flags,
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struct i915_vma_work *work);
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bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long color);
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bool i915_vma_misplaced(const struct i915_vma *vma,
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u64 size, u64 alignment, u64 flags);
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void __i915_vma_set_map_and_fenceable(struct i915_vma *vma);
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void i915_vma_revoke_mmap(struct i915_vma *vma);
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void __i915_vma_evict(struct i915_vma *vma);
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int __i915_vma_unbind(struct i915_vma *vma);
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int __must_check i915_vma_unbind(struct i915_vma *vma);
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void i915_vma_unlink_ctx(struct i915_vma *vma);
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void i915_vma_close(struct i915_vma *vma);
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void i915_vma_reopen(struct i915_vma *vma);
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static inline struct i915_vma *__i915_vma_get(struct i915_vma *vma)
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{
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if (kref_get_unless_zero(&vma->ref))
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return vma;
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return NULL;
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}
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void i915_vma_release(struct kref *ref);
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static inline void __i915_vma_put(struct i915_vma *vma)
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{
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kref_put(&vma->ref, i915_vma_release);
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}
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#define assert_vma_held(vma) dma_resv_assert_held((vma)->resv)
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static inline void i915_vma_lock(struct i915_vma *vma)
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{
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dma_resv_lock(vma->resv, NULL);
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}
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static inline void i915_vma_unlock(struct i915_vma *vma)
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{
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dma_resv_unlock(vma->resv);
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}
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int __must_check
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i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
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u64 size, u64 alignment, u64 flags);
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static inline int __must_check
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i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
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{
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return i915_vma_pin_ww(vma, NULL, size, alignment, flags);
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}
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int i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
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u32 align, unsigned int flags);
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static inline int i915_vma_pin_count(const struct i915_vma *vma)
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{
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return atomic_read(&vma->flags) & I915_VMA_PIN_MASK;
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}
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static inline bool i915_vma_is_pinned(const struct i915_vma *vma)
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{
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return i915_vma_pin_count(vma);
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}
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static inline void __i915_vma_pin(struct i915_vma *vma)
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{
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atomic_inc(&vma->flags);
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GEM_BUG_ON(!i915_vma_is_pinned(vma));
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}
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static inline void __i915_vma_unpin(struct i915_vma *vma)
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{
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GEM_BUG_ON(!i915_vma_is_pinned(vma));
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atomic_dec(&vma->flags);
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}
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static inline void i915_vma_unpin(struct i915_vma *vma)
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{
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GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
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__i915_vma_unpin(vma);
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}
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static inline bool i915_vma_is_bound(const struct i915_vma *vma,
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unsigned int where)
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{
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return atomic_read(&vma->flags) & where;
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}
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static inline bool i915_node_color_differs(const struct drm_mm_node *node,
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unsigned long color)
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{
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return drm_mm_node_allocated(node) && node->color != color;
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}
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/**
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* i915_vma_pin_iomap - calls ioremap_wc to map the GGTT VMA via the aperture
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* @vma: VMA to iomap
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*
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* The passed in VMA has to be pinned in the global GTT mappable region.
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* An extra pinning of the VMA is acquired for the return iomapping,
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* the caller must call i915_vma_unpin_iomap to relinquish the pinning
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* after the iomapping is no longer required.
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*
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* Returns a valid iomapped pointer or ERR_PTR.
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*/
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void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
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#define IO_ERR_PTR(x) ((void __iomem *)ERR_PTR(x))
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/**
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* i915_vma_unpin_iomap - unpins the mapping returned from i915_vma_iomap
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* @vma: VMA to unpin
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*
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* Unpins the previously iomapped VMA from i915_vma_pin_iomap().
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*
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* This function is only valid to be called on a VMA previously
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* iomapped by the caller with i915_vma_pin_iomap().
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*/
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void i915_vma_unpin_iomap(struct i915_vma *vma);
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static inline struct page *i915_vma_first_page(struct i915_vma *vma)
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{
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GEM_BUG_ON(!vma->pages);
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return sg_page(vma->pages->sgl);
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}
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/**
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* i915_vma_pin_fence - pin fencing state
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* @vma: vma to pin fencing for
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*
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* This pins the fencing state (whether tiled or untiled) to make sure the
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* vma (and its object) is ready to be used as a scanout target. Fencing
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* status must be synchronize first by calling i915_vma_get_fence():
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*
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* The resulting fence pin reference must be released again with
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* i915_vma_unpin_fence().
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*
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* Returns:
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*
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* True if the vma has a fence, false otherwise.
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*/
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int __must_check i915_vma_pin_fence(struct i915_vma *vma);
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void i915_vma_revoke_fence(struct i915_vma *vma);
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int __i915_vma_pin_fence(struct i915_vma *vma);
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static inline void __i915_vma_unpin_fence(struct i915_vma *vma)
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{
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GEM_BUG_ON(atomic_read(&vma->fence->pin_count) <= 0);
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atomic_dec(&vma->fence->pin_count);
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}
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/**
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* i915_vma_unpin_fence - unpin fencing state
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* @vma: vma to unpin fencing for
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*
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* This releases the fence pin reference acquired through
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* i915_vma_pin_fence. It will handle both objects with and without an
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* attached fence correctly, callers do not need to distinguish this.
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*/
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static inline void
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i915_vma_unpin_fence(struct i915_vma *vma)
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{
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if (vma->fence)
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__i915_vma_unpin_fence(vma);
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}
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void i915_vma_parked(struct intel_gt *gt);
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#define for_each_until(cond) if (cond) break; else
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/**
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* for_each_ggtt_vma - Iterate over the GGTT VMA belonging to an object.
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* @V: the #i915_vma iterator
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* @OBJ: the #drm_i915_gem_object
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*
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* GGTT VMA are placed at the being of the object's vma_list, see
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* vma_create(), so we can stop our walk as soon as we see a ppgtt VMA,
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* or the list is empty ofc.
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*/
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#define for_each_ggtt_vma(V, OBJ) \
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list_for_each_entry(V, &(OBJ)->vma.list, obj_link) \
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for_each_until(!i915_vma_is_ggtt(V))
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struct i915_vma *i915_vma_alloc(void);
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void i915_vma_free(struct i915_vma *vma);
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struct i915_vma *i915_vma_make_unshrinkable(struct i915_vma *vma);
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void i915_vma_make_shrinkable(struct i915_vma *vma);
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void i915_vma_make_purgeable(struct i915_vma *vma);
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int i915_vma_wait_for_bind(struct i915_vma *vma);
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static inline int i915_vma_sync(struct i915_vma *vma)
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{
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/* Wait for the asynchronous bindings and pending GPU reads */
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return i915_active_wait(&vma->active);
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}
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#endif
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