6b1e4e732d
This patch also drops support for automatically unbinding devices from the kernel - run scripts/setup.sh first. Our generic pci interface is now hidden behind include/spdk/pci.h and implemented in lib/util/pci.c. We no longer wrap the calls in nvme_impl.h or ioat_impl.h. The implementation now only uses DPDK and the libpciaccess dependency has been removed. If using a version of DPDK earlier than 16.07, enumerating devices by class code isn't available and only Intel SSDs will be discovered. DPDK 16.07 adds enumeration by class code and all NVMe devices will be correctly discovered. Change-Id: I0e8bac36b5ca57df604a2b310c47342c67dc9f3c Signed-off-by: Ben Walker <benjamin.walker@intel.com>
451 lines
12 KiB
C
451 lines
12 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 <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <rte_config.h>
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#include <rte_pci.h>
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#include <rte_version.h>
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#define spdk_pci_device rte_pci_device
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#ifdef __FreeBSD__
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#include <sys/pciio.h>
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#endif
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#include "spdk/pci.h"
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#include "spdk/pci_ids.h"
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#define SYSFS_PCI_DEVICES "/sys/bus/pci/devices"
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#define SYSFS_PCI_DRIVERS "/sys/bus/pci/drivers"
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#define SPDK_PCI_PATH_MAX 256
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#define PCI_CFG_SIZE 256
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#define PCI_EXT_CAP_ID_SN 0x03
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struct spdk_pci_enum_ctx {
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struct rte_pci_driver driver;
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spdk_pci_enum_cb enum_cb;
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void *enum_ctx;
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};
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static struct rte_pci_id nvme_pci_driver_id[] = {
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#if RTE_VERSION >= RTE_VERSION_NUM(16, 7, 0, 1)
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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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#else
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{RTE_PCI_DEVICE(0x8086, 0x0953)},
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#endif
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{ .vendor_id = 0, /* sentinel */ },
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};
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#define SPDK_IOAT_PCI_DEVICE(DEVICE_ID) RTE_PCI_DEVICE(SPDK_PCI_VID_INTEL, DEVICE_ID)
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static struct rte_pci_id ioat_driver_id[] = {
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB1)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB4)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB5)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB6)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB7)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_SNB8)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB1)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB4)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB5)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB6)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB7)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB8)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_IVB9)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW4)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW5)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW6)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW7)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW8)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_HSW9)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BWD0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BWD1)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BWD2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BWD3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDXDE0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDXDE1)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDXDE2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDXDE3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX0)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX1)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX2)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX3)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX4)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX5)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX6)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX7)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX8)},
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{SPDK_IOAT_PCI_DEVICE(PCI_DEVICE_ID_INTEL_IOAT_BDX9)},
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{ .vendor_id = 0, /* sentinel */ },
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};
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static int
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spdk_pci_device_init(struct rte_pci_driver *driver,
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struct rte_pci_device *device)
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{
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struct spdk_pci_enum_ctx *ctx = (struct spdk_pci_enum_ctx *)driver;
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if (device->kdrv == RTE_KDRV_VFIO) {
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/*
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* TODO: This is a workaround for an issue where the device is not ready after VFIO reset.
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* Figure out what is actually going wrong and remove this sleep.
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*/
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usleep(500 * 1000);
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}
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return ctx->enum_cb(ctx->enum_ctx, (struct spdk_pci_device *)device);
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}
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static int
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spdk_pci_device_fini(struct rte_pci_device *device)
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{
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return 0;
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}
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int
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spdk_pci_enumerate(enum spdk_pci_device_type type,
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spdk_pci_enum_cb enum_cb,
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void *enum_ctx)
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{
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struct spdk_pci_enum_ctx ctx = {};
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int rc;
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ctx.enum_cb = enum_cb;
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ctx.enum_ctx = enum_ctx;
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ctx.driver.devinit = spdk_pci_device_init;
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ctx.driver.devuninit = spdk_pci_device_fini;
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ctx.driver.drv_flags = RTE_PCI_DRV_NEED_MAPPING;
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if (type == SPDK_PCI_DEVICE_NVME) {
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ctx.driver.name = "SPDK NVMe";
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ctx.driver.id_table = nvme_pci_driver_id;
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} else if (type == SPDK_PCI_DEVICE_IOAT) {
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ctx.driver.id_table = ioat_driver_id;
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ctx.driver.name = "SPDK IOAT";
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} else {
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return -1;
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}
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rte_eal_pci_register(&ctx.driver);
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rc = rte_eal_pci_probe();
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rte_eal_pci_unregister(&ctx.driver);
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return rc;
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}
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int
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spdk_pci_device_map_bar(struct spdk_pci_device *device, uint32_t bar,
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void **mapped_addr, uint64_t *phys_addr, uint64_t *size)
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{
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struct rte_pci_device *dev = device;
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*mapped_addr = dev->mem_resource[bar].addr;
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*phys_addr = (uint64_t)dev->mem_resource[bar].phys_addr;
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*size = (uint64_t)dev->mem_resource[bar].len;
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return 0;
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}
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int
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spdk_pci_device_unmap_bar(struct spdk_pci_device *device, uint32_t bar, void *addr)
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{
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return 0;
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}
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static int
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pci_device_get_u32(struct spdk_pci_device *dev, const char *file, uint32_t *val)
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{
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char filename[SPDK_PCI_PATH_MAX];
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FILE *fd;
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char buf[10];
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char *end;
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snprintf(filename, sizeof(filename),
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SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/%s",
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spdk_pci_device_get_domain(dev), spdk_pci_device_get_bus(dev),
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spdk_pci_device_get_dev(dev), spdk_pci_device_get_func(dev), file);
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fd = fopen(filename, "r");
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if (!fd) {
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return -1;
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}
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if (fgets(buf, sizeof(buf), fd) == NULL) {
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fclose(fd);
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return -1;
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}
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*val = strtoul(buf, &end, 0);
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if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
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fclose(fd);
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return -1;
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}
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fclose(fd);
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return 0;
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}
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uint16_t
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spdk_pci_device_get_domain(struct spdk_pci_device *dev)
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{
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return dev->addr.domain;
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}
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uint8_t
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spdk_pci_device_get_bus(struct spdk_pci_device *dev)
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{
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return dev->addr.bus;
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}
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uint8_t
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spdk_pci_device_get_dev(struct spdk_pci_device *dev)
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{
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return dev->addr.devid;
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}
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uint8_t
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spdk_pci_device_get_func(struct spdk_pci_device *dev)
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{
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return dev->addr.function;
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}
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uint16_t
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spdk_pci_device_get_vendor_id(struct spdk_pci_device *dev)
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{
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return dev->id.vendor_id;
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}
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uint16_t
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spdk_pci_device_get_device_id(struct spdk_pci_device *dev)
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{
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return dev->id.device_id;
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}
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uint16_t
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spdk_pci_device_get_subvendor_id(struct spdk_pci_device *dev)
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{
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return dev->id.subsystem_vendor_id;
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}
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uint16_t
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spdk_pci_device_get_subdevice_id(struct spdk_pci_device *dev)
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{
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return dev->id.subsystem_device_id;
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}
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uint32_t
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spdk_pci_device_get_class(struct spdk_pci_device *dev)
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{
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uint32_t class_code;
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if (pci_device_get_u32(dev, "class", &class_code) < 0) {
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return 0xFFFFFFFFu;
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}
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return class_code;
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}
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const char *
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spdk_pci_device_get_device_name(struct spdk_pci_device *dev)
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{
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/* TODO */
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return NULL;
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}
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int
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spdk_pci_device_cfg_read8(struct spdk_pci_device *dev, uint8_t *value, uint32_t offset)
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{
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return rte_eal_pci_read_config(dev, value, 1, offset) == 1 ? 0 : -1;
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}
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int
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spdk_pci_device_cfg_write8(struct spdk_pci_device *dev, uint8_t value, uint32_t offset)
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{
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return rte_eal_pci_write_config(dev, &value, 1, offset) == 1 ? 0 : -1;
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}
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int
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spdk_pci_device_cfg_read16(struct spdk_pci_device *dev, uint16_t *value, uint32_t offset)
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{
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return rte_eal_pci_read_config(dev, value, 2, offset) == 2 ? 0 : -1;
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}
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int
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spdk_pci_device_cfg_write16(struct spdk_pci_device *dev, uint16_t value, uint32_t offset)
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{
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return rte_eal_pci_write_config(dev, &value, 2, offset) == 2 ? 0 : -1;
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}
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int
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spdk_pci_device_cfg_read32(struct spdk_pci_device *dev, uint32_t *value, uint32_t offset)
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{
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return rte_eal_pci_read_config(dev, value, 4, offset) == 4 ? 0 : -1;
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}
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int
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spdk_pci_device_cfg_write32(struct spdk_pci_device *dev, uint32_t value, uint32_t offset)
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{
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return rte_eal_pci_write_config(dev, &value, 4, offset) == 4 ? 0 : -1;
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}
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int
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spdk_pci_device_get_serial_number(struct spdk_pci_device *dev, char *sn, size_t len)
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{
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int err;
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uint32_t pos, header = 0;
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uint32_t i, buf[2];
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if (len < 17)
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return -1;
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err = spdk_pci_device_cfg_read32(dev, &header, PCI_CFG_SIZE);
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if (err || !header)
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return -1;
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pos = PCI_CFG_SIZE;
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while (1) {
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if ((header & 0x0000ffff) == PCI_EXT_CAP_ID_SN) {
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if (pos) {
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/*skip the header*/
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pos += 4;
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for (i = 0; i < 2; i++) {
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err = spdk_pci_device_cfg_read32(dev, &buf[i], pos + 4 * i);
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if (err)
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return -1;
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}
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sprintf(sn, "%08x%08x", buf[1], buf[0]);
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return 0;
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}
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}
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pos = (header >> 20) & 0xffc;
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/*0 if no other items exist*/
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if (pos < PCI_CFG_SIZE)
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return -1;
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err = spdk_pci_device_cfg_read32(dev, &header, pos);
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if (err)
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return -1;
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}
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return -1;
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}
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#ifdef __linux__
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int
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spdk_pci_device_claim(struct spdk_pci_device *dev)
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{
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int dev_fd;
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char shm_name[64];
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int pid;
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void *dev_map;
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struct flock pcidev_lock = {
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.l_type = F_WRLCK,
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.l_whence = SEEK_SET,
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.l_start = 0,
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.l_len = 0,
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};
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sprintf(shm_name, PCI_PRI_FMT, spdk_pci_device_get_domain(dev),
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spdk_pci_device_get_bus(dev), spdk_pci_device_get_dev(dev),
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spdk_pci_device_get_func(dev));
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dev_fd = shm_open(shm_name, O_RDWR | O_CREAT, 0600);
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if (dev_fd == -1) {
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fprintf(stderr, "could not shm_open %s\n", shm_name);
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return -1;
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}
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if (ftruncate(dev_fd, sizeof(int)) != 0) {
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fprintf(stderr, "could not truncate shm %s\n", shm_name);
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close(dev_fd);
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return -1;
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}
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dev_map = mmap(NULL, sizeof(int), PROT_READ | PROT_WRITE,
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MAP_SHARED, dev_fd, 0);
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if (dev_map == NULL) {
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fprintf(stderr, "could not mmap shm %s\n", shm_name);
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close(dev_fd);
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return -1;
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}
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if (fcntl(dev_fd, F_SETLK, &pcidev_lock) != 0) {
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pid = *(int *)dev_map;
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fprintf(stderr, "Cannot create lock on device %s, probably"
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" process %d has claimed it\n", shm_name, pid);
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munmap(dev_map, sizeof(int));
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close(dev_fd);
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return -1;
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}
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*(int *)dev_map = (int)getpid();
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munmap(dev_map, sizeof(int));
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/* Keep dev_fd open to maintain the lock. */
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return 0;
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}
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#endif /* __linux__ */
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#ifdef __FreeBSD__
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int
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spdk_pci_device_claim(struct spdk_pci_device *dev)
|
|
{
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
#endif /* __FreeBSD__ */
|