7c6faa1efe
To implement this feature, we need to do CPU side tracking of all L3/L2/L1 entries. This does add a little bit of CPU allocations, but the advantage is that the traversal of the page table tree is faster. No more need for the linear seach of find_buffer(). With this feature, we can have multiple VkImage bind to the same main memory address, as long as they share exact same mapping parameters. The AUX mapping will be removed when the last VkImage is destroyed. As previously, if the L1 mapping entry parameters don't match, the mapping fails. Anv handles this nicely by just disabling AUX on the image. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26335>
139 lines
4.3 KiB
C
139 lines
4.3 KiB
C
/*
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* Copyright (c) 2018 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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#ifndef INTEL_AUX_MAP_H
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#define INTEL_AUX_MAP_H
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#include "intel_buffer_alloc.h"
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#include "isl/isl.h"
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Auxiliary surface mapping implementation
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*
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* These functions are implemented in common code shared by drivers.
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*/
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struct intel_aux_map_context;
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struct intel_device_info;
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#define INTEL_AUX_MAP_ENTRY_VALID_BIT 0x1ull
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struct intel_aux_map_context *
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intel_aux_map_init(void *driver_ctx,
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struct intel_mapped_pinned_buffer_alloc *buffer_alloc,
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const struct intel_device_info *devinfo);
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uint32_t
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intel_aux_map_get_alignment(struct intel_aux_map_context *ctx);
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void
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intel_aux_map_finish(struct intel_aux_map_context *ctx);
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uint32_t
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intel_aux_map_get_state_num(struct intel_aux_map_context *ctx);
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/**
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* Returns the current number of buffers used by the aux-map tables
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*
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* When preparing to execute a new batch, use this function to determine how
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* many buffers will be required. More buffers may be added by concurrent
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* accesses of the aux-map functions, but they won't be required for since
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* they involve surfaces not used by this batch.
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*/
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uint32_t
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intel_aux_map_get_num_buffers(struct intel_aux_map_context *ctx);
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/**
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* Returns the mask of meta data address in L1 entry
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*
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* The mask value is effected by page size of meta data specific to a platform.
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*/
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uint64_t
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intel_aux_get_meta_address_mask(struct intel_aux_map_context *ctx);
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/**
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* Returns the ratio between the granularity of main surface and AUX data
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*/
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uint64_t
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intel_aux_get_main_to_aux_ratio(struct intel_aux_map_context *ctx);
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/**
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* Fill an array of exec_object2 with aux-map buffer handles
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*
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* The intel_aux_map_get_num_buffers call should be made, then the driver can
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* make sure the `obj` array is large enough before calling this function.
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*/
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void
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intel_aux_map_fill_bos(struct intel_aux_map_context *ctx, void **driver_bos,
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uint32_t max_bos);
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uint64_t
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intel_aux_map_get_base(struct intel_aux_map_context *ctx);
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uint64_t
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intel_aux_map_format_bits(enum isl_tiling tiling, enum isl_format format,
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uint8_t plane);
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uint64_t
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intel_aux_map_format_bits_for_isl_surf(const struct isl_surf *isl_surf);
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uint64_t *
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intel_aux_map_get_entry(struct intel_aux_map_context *ctx,
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uint64_t main_address,
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uint64_t *aux_entry_address);
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/* Fails if a mapping is attempted that would conflict with an existing one.
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* This increase the refcount of the mapped region if already mapped, sets it
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* to 1 otherwise.
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*/
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bool
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intel_aux_map_add_mapping(struct intel_aux_map_context *ctx, uint64_t main_address,
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uint64_t aux_address, uint64_t main_size_B,
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uint64_t format_bits);
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/* Decrease the refcount of a mapped region. When the refcount reaches 0, the
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* region is unmapped.
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*/
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void
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intel_aux_map_del_mapping(struct intel_aux_map_context *ctx, uint64_t main_address,
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uint64_t size);
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/* Unmaps a region, refcount is reset to 0.
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*/
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void
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intel_aux_map_unmap_range(struct intel_aux_map_context *ctx, uint64_t main_address,
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uint64_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* INTEL_AUX_MAP_H */
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