1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2016 Intel Corporation. 3 * All rights reserved. 4 */ 5 6 #ifndef SPDK_ENV_INTERNAL_H 7 #define SPDK_ENV_INTERNAL_H 8 9 #include "spdk/stdinc.h" 10 11 #include "spdk/env.h" 12 13 #include <rte_config.h> 14 #include <rte_version.h> 15 #include <rte_eal.h> 16 17 #if RTE_VERSION < RTE_VERSION_NUM(19, 11, 0, 0) 18 #error RTE_VERSION is too old! Minimum 19.11 is required. 19 #endif 20 21 /* x86-64 and ARM userspace virtual addresses use only the low 48 bits [0..47], 22 * which is enough to cover 256 TB. 23 */ 24 #define SHIFT_256TB 48 /* (1 << 48) == 256 TB */ 25 #define MASK_256TB ((1ULL << SHIFT_256TB) - 1) 26 27 #define SHIFT_1GB 30 /* (1 << 30) == 1 GB */ 28 #define MASK_1GB ((1ULL << SHIFT_1GB) - 1) 29 30 int pci_env_init(void); 31 void pci_env_reinit(void); 32 void pci_env_fini(void); 33 int mem_map_init(bool legacy_mem); 34 int vtophys_init(void); 35 36 int vtophys_iommu_map_dma_bar(uint64_t vaddr, uint64_t iova, uint64_t size); 37 int vtophys_iommu_unmap_dma_bar(uint64_t vaddr); 38 39 struct rte_pci_device; 40 41 /** 42 * Report a DMA-capable PCI device to the vtophys translation code. 43 * Increases the refcount of active DMA-capable devices managed by SPDK. 44 * This must be called after a `rte_pci_device` is created. 45 */ 46 void vtophys_pci_device_added(struct rte_pci_device *pci_device); 47 48 /** 49 * Report the removal of a DMA-capable PCI device to the vtophys translation code. 50 * Decreases the refcount of active DMA-capable devices managed by SPDK. 51 * This must be called before a `rte_pci_device` is destroyed. 52 */ 53 void vtophys_pci_device_removed(struct rte_pci_device *pci_device); 54 55 #endif 56