2f36777194
Devices behind a VMD aren't visible directly on the PCI bus. In order to support them, we'll need an additional VMD driver that's going to enumerate the devices behind it and hook those into the SPDK PCI layer. We want those devices to be accessible with the same APIs that are used to access physical PCI devices. The physical devices are still created and managed by DPDK, but additional devices can be now hooked externally. The hook API slightly departs from how env layer worked so far. Instead of keeping the generic hook functions internal-only and adding per-driver (NVMe, I/OAT, Virtio) public functions, this patch makes the generic hook API public from the start. It accepts the device driver as a parameter, which needs to be exposed now. That's why spdk_pci_nvme_get_driver() is introduced. It's only the NVMe driver that's exposed so far, but other drivers and their attach APIs should eventually follow the same path. The previous model really didn't scale well and there's no need to stretch it further. Change-Id: Iade018a43b1e23527bd2914be42b403551e73bb6 Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/435802 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
87 lines
2.8 KiB
C
87 lines
2.8 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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#include "env_internal.h"
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#include "spdk/pci_ids.h"
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static struct rte_pci_id nvme_pci_driver_id[] = {
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{
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.class_id = SPDK_PCI_CLASS_NVME,
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.vendor_id = PCI_ANY_ID,
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.device_id = PCI_ANY_ID,
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.subsystem_vendor_id = PCI_ANY_ID,
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.subsystem_device_id = PCI_ANY_ID,
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},
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{ .vendor_id = 0, /* sentinel */ },
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};
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static struct spdk_pci_driver g_nvme_pci_drv = {
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.driver = {
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.drv_flags = RTE_PCI_DRV_NEED_MAPPING
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#if RTE_VERSION >= RTE_VERSION_NUM(18, 8, 0, 0)
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| RTE_PCI_DRV_WC_ACTIVATE
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#endif
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,
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.id_table = nvme_pci_driver_id,
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.probe = spdk_pci_device_init,
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.remove = spdk_pci_device_fini,
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.driver.name = "spdk_nvme",
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},
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.cb_fn = NULL,
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.cb_arg = NULL,
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.is_registered = false,
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};
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int
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spdk_pci_nvme_device_attach(spdk_pci_enum_cb enum_cb,
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void *enum_ctx, struct spdk_pci_addr *pci_address)
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{
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return spdk_pci_device_attach(&g_nvme_pci_drv, enum_cb, enum_ctx, pci_address);
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}
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int
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spdk_pci_nvme_enumerate(spdk_pci_enum_cb enum_cb, void *enum_ctx)
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{
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return spdk_pci_enumerate(&g_nvme_pci_drv, enum_cb, enum_ctx);
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}
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struct spdk_pci_driver *
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spdk_pci_nvme_get_driver(void)
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{
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return &g_nvme_pci_drv;
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}
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SPDK_PMD_REGISTER_PCI(g_nvme_pci_drv);
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