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* This driver attaches to the Intel VMD drive and connects a new PCI domainDoug Ambrisko2019-10-103-0/+921
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 Notes: svn path=/head/; revision=353380