Date: Wed, 7 May 2014 16:45:51 +0000 (UTC) From: Jim Harris <jimharris@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r265563 - stable/9/sys/dev/nvme Message-ID: <201405071645.s47GjpEU070043@svn.freebsd.org>
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Author: jimharris Date: Wed May 7 16:45:50 2014 New Revision: 265563 URL: http://svnweb.freebsd.org/changeset/base/265563 Log: MFC r263278: nvme: NVMe specification dictates 4-byte alignment for PRPs (not 8). Modified: stable/9/sys/dev/nvme/nvme_qpair.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/dev/ (props changed) Modified: stable/9/sys/dev/nvme/nvme_qpair.c ============================================================================== --- stable/9/sys/dev/nvme/nvme_qpair.c Wed May 7 16:45:05 2014 (r265562) +++ stable/9/sys/dev/nvme/nvme_qpair.c Wed May 7 16:45:50 2014 (r265563) @@ -498,8 +498,9 @@ nvme_qpair_construct(struct nvme_qpair * mtx_init(&qpair->lock, "nvme qpair lock", NULL, MTX_DEF); + /* Note: NVMe PRP format is restricted to 4-byte alignment. */ bus_dma_tag_create(bus_get_dma_tag(ctrlr->dev), - sizeof(uint64_t), PAGE_SIZE, BUS_SPACE_MAXADDR, + 4, PAGE_SIZE, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, NVME_MAX_XFER_SIZE, (NVME_MAX_XFER_SIZE/PAGE_SIZE)+1, PAGE_SIZE, 0, NULL, NULL, &qpair->dma_tag);
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