11be633b06
DPDK 18.11+ does its best to ensure all devices are
equally attached or detached in all processes within
a shared memory group. For SPDK it means that if
a device is hotplugged in the primary, then DPDK will
automatically send an IPC hotplug request to all other
processes. Those other processes may not have the same
SPDK PCI driver registered and may fail to attach the
device. DPDK will send back the failure status and the
primary process will also fail to hotplug its device.
To prevent that, we need to pre-register the pci
drivers on env init.
We register the drivers just after the EAL init
because we don't want the matching devices to be picked
up by the initial bus probe in DPDK. That's for 2 reasons:
1) we don't want to attach *all* available devices
2) devices attached from non-SPDK context (that is,
outside of the spdk attach or enumerate functions)
will still fail to attach - the entire attaching
process will only take significant amount of time
and will bloat the log with useless status messages
Change-Id: I7b4c3a2e355f98ea755649f789137f5a727bc935
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/434415
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>
126 lines
4.3 KiB
C
126 lines
4.3 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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struct rte_pci_device *dev_handle;
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struct spdk_pci_driver *driver;
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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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bool attached;
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TAILQ_ENTRY(spdk_pci_device) tailq;
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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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