df4d03f107
In order to populate our PCI device list with devices located behind the VMD, we'll need to fill out those device structures from within a special VMD driver. That driver will base on PCI configuration and BAR accesses, but definitely not on DPDK. We want to put the VMD driver outside of the env lib, so we're about to provide it with a direct access to the device struct. Before we do that, let's group all the env-internal fields into an extra struct "internal". The spdk_pci_device struct does actually depend on DPDK now as it contains an `rte_pci_device *dev_handle` field, but we can easily break that dependency. The field is only used as an arguement to DPDK functions, so we can change its type to void* and let the implicit type conversion do the magic. After all, the VMD driver will potentially use it to store its (non-DPDK) data as well. Change-Id: I425d6dfa7af13e022f5377ceaff39efbd4a01b3d Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/435799 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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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
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_ENV_INTERNAL_H
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#define SPDK_ENV_INTERNAL_H
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#include "spdk/stdinc.h"
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#include "spdk/env.h"
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#include <rte_config.h>
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#include <rte_version.h>
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#include <rte_eal.h>
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#if RTE_VERSION >= RTE_VERSION_NUM(17, 05, 0, 0)
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#include <rte_bus.h>
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extern struct rte_pci_bus rte_pci_bus;
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#endif
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#include <rte_pci.h>
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#if RTE_VERSION >= RTE_VERSION_NUM(17, 11, 0, 1)
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#include <rte_bus_pci.h>
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#endif
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#include <rte_dev.h>
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#if RTE_VERSION < RTE_VERSION_NUM(16, 11, 0, 0)
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#error RTE_VERSION is too old! Minimum 16.11 is required.
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#endif
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/* x86-64 and ARM userspace virtual addresses use only the low 48 bits [0..47],
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* which is enough to cover 256 TB.
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*/
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#define SHIFT_256TB 48 /* (1 << 48) == 256 TB */
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#define MASK_256TB ((1ULL << SHIFT_256TB) - 1)
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#define SHIFT_1GB 30 /* (1 << 30) == 1 GB */
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#define MASK_1GB ((1ULL << SHIFT_1GB) - 1)
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#define SHIFT_2MB 21 /* (1 << 21) == 2MB */
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#define MASK_2MB ((1ULL << SHIFT_2MB) - 1)
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#define VALUE_2MB (1 << SHIFT_2MB)
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#define SHIFT_4KB 12 /* (1 << 12) == 4KB */
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#define MASK_4KB ((1ULL << SHIFT_4KB) - 1)
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#define VALUE_4KB (1 << SHIFT_4KB)
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#define SPDK_PMD_REGISTER_PCI(pci_drv) \
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__attribute__((constructor)) static void pci_drv ## _register(void) \
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{ \
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spdk_pci_driver_register(&pci_drv); \
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}
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struct spdk_pci_device {
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void *dev_handle;
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struct spdk_pci_addr addr;
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struct spdk_pci_id id;
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int socket_id;
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struct _spdk_pci_device_internal {
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struct spdk_pci_driver *driver;
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bool attached;
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TAILQ_ENTRY(spdk_pci_device) tailq;
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} internal;
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};
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struct spdk_pci_driver {
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struct rte_pci_driver driver;
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spdk_pci_enum_cb cb_fn;
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void *cb_arg;
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bool is_registered;
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TAILQ_ENTRY(spdk_pci_driver) tailq;
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};
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void spdk_pci_driver_register(struct spdk_pci_driver *driver);
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int spdk_pci_device_init(struct rte_pci_driver *driver, struct rte_pci_device *device);
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int spdk_pci_device_fini(struct rte_pci_device *device);
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int spdk_pci_enumerate(struct spdk_pci_driver *driver, spdk_pci_enum_cb enum_cb, void *enum_ctx);
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int spdk_pci_device_attach(struct spdk_pci_driver *driver, spdk_pci_enum_cb enum_cb, void *enum_ctx,
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struct spdk_pci_addr *pci_address);
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void spdk_pci_init(void);
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int spdk_mem_map_init(void);
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int spdk_vtophys_init(void);
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/**
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* Report a DMA-capable PCI device to the vtophys translation code.
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* Increases the refcount of active DMA-capable devices managed by SPDK.
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* This must be called after a `rte_pci_device` is created.
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*/
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void spdk_vtophys_pci_device_added(struct rte_pci_device *pci_device);
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/**
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* Report the removal of a DMA-capable PCI device to the vtophys translation code.
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* Decreases the refcount of active DMA-capable devices managed by SPDK.
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* This must be called before a `rte_pci_device` is destroyed.
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*/
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void spdk_vtophys_pci_device_removed(struct rte_pci_device *pci_device);
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#endif
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