57 lines
2.8 KiB
C
57 lines
2.8 KiB
C
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/**
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* Copyright (c) 2021, Systems Group, ETH Zurich
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __FPGA_MMU_H__
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#define __FPGA_MMU_H__
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#include "coyote_dev.h"
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/* Alloc huge pages (should be used only if no host hugepages enabled!) */
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int alloc_user_buffers(struct fpga_dev *d, unsigned long n_pages, int32_t cpid);
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int free_user_buffers(struct fpga_dev *d, uint64_t vaddr, int32_t cpid);
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/* PR memory regions */
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int alloc_pr_buffers(struct fpga_dev *d, unsigned long n_pages);
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int free_pr_buffers(struct fpga_dev *d, uint64_t vaddr);
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/* Card memory resources */
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int card_alloc(struct fpga_dev *d, uint64_t *card_paddr, uint64_t n_pages, int type);
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void card_free(struct fpga_dev *d, uint64_t *card_paddr, uint64_t n_pages, int type);
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/* TLB mappings */
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void tlb_create_map(struct tlb_order *tlb_ord, uint64_t vaddr, uint64_t paddr_host, uint64_t paddr_card, int32_t cpid, uint64_t *entry);
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void tlb_create_unmap(struct tlb_order *tlb_ord, uint64_t vaddr, int32_t cpid, uint64_t *entry);
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/* TLB control */
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void tlb_service_dev(struct fpga_dev *d, struct tlb_order *tlb_ord, uint64_t *entry, uint32_t n_pages);
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/* Page table walks */
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int tlb_get_user_pages(struct fpga_dev *d, uint64_t start, size_t count, int32_t cpid, pid_t pid);
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int tlb_put_user_pages(struct fpga_dev *d, uint64_t vaddr, int32_t cpid, int dirtied);
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int tlb_put_user_pages_all(struct fpga_dev *d, int dirtied);
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#endif /* FPGA MMU */
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