f2521a76ed
starting at the max. domain, and then work down. Then existing FreeBSD
drivers will attach. Interrupt routing from the VMD MSI-X to the NVME
drive is not well known, so any interrupt is sent to all children that
register.
VROC used Intel meta data so graid(8) works with it. However, graid(8)
supports RAID 0,1,10 for read and write. I have some early code to
support writes with RAID 5. Note that RAID 5 can have life issues
with SSDs since it can cause write amplification from updating the parity
data.
Hot plug support needs a change to skip the following check to work:
if (pcib_request_feature(dev, PCI_FEATURE_HP) != 0) {
in sys/dev/pci/pci_pci.c.
Looked at by: imp, rpokala, bcr
Differential Revision: https://reviews.freebsd.org/D21383
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright 2019 Cisco Systems, Inc.
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __VMD_PRIVATE_H__
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#define __VMD_PRIVATE_H__
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struct vmd_irq_handler {
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TAILQ_ENTRY(vmd_irq_handler) vmd_link;
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device_t vmd_child;
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driver_intr_t *vmd_intr;
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void *vmd_arg;
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int vmd_rid;
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};
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struct vmd_irq {
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struct resource *vmd_res;
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int vmd_rid;
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void *vmd_handle;
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struct vmd_softc *vmd_sc;
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int vmd_instance;
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TAILQ_HEAD(,vmd_irq_handler) vmd_list;
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};
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/*
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* VMD specific data.
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*/
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struct vmd_softc
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{
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device_t vmd_dev;
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device_t vmd_child;
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uint32_t vmd_flags; /* flags */
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#define PCIB_SUBTRACTIVE 0x1
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#define PCIB_DISABLE_MSI 0x2
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#define PCIB_DISABLE_MSIX 0x4
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#define PCIB_ENABLE_ARI 0x8
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#define PCIB_HOTPLUG 0x10
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#define PCIB_HOTPLUG_CMD_PENDING 0x20
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#define PCIB_DETACH_PENDING 0x40
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#define PCIB_DETACHING 0x80
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u_int vmd_domain; /* domain number */
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struct pcib_secbus vmd_bus; /* secondary bus numbers */
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#define VMD_MAX_BAR 3
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struct resource *vmd_regs_resource[VMD_MAX_BAR];
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int vmd_regs_rid[VMD_MAX_BAR];
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bus_space_handle_t vmd_bhandle;
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bus_space_tag_t vmd_btag;
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int vmd_io_rid;
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struct resource *vmd_io_resource;
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void *vmd_intr;
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struct vmd_irq *vmd_irq;
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int vmd_msix_count;
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#ifdef TASK_QUEUE_INTR
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struct taskqueue *vmd_irq_tq;
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struct task vmd_irq_task;
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#else
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struct mtx vmd_irq_lock;
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#endif
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};
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#endif
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