From owner-svn-src-stable-9@FreeBSD.ORG Tue Jun 18 14:20:14 2013 Return-Path: Delivered-To: svn-src-stable-9@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id BF0C79F7; Tue, 18 Jun 2013 14:20:14 +0000 (UTC) (envelope-from marius@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id AF4141C6A; Tue, 18 Jun 2013 14:20:14 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id r5IEKESR080984; Tue, 18 Jun 2013 14:20:14 GMT (envelope-from marius@svn.freebsd.org) Received: (from marius@localhost) by svn.freebsd.org (8.14.7/8.14.5/Submit) id r5IEKEfE080982; Tue, 18 Jun 2013 14:20:14 GMT (envelope-from marius@svn.freebsd.org) Message-Id: <201306181420.r5IEKEfE080982@svn.freebsd.org> From: Marius Strobl Date: Tue, 18 Jun 2013 14:20:14 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r251939 - in stable/9/sys: kern sys X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-9@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: SVN commit messages for only the 9-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Jun 2013 14:20:14 -0000 Author: marius Date: Tue Jun 18 14:20:14 2013 New Revision: 251939 URL: http://svnweb.freebsd.org/changeset/base/251939 Log: MFC: r248804 deferal -> deferral MFC: r248891 Pass correct parameter to CTR5() in bus_dmamap_load_uio. MFC: r248892 Do not add 1 to nsegs before passing to CTR5(), since nsegs has already been incremented before these calls. MFC: r248893 Add CTR5() to bus_dmamap_load_ccb, similar to other bus_dmamap_load_* functions. MFC: r248896 Add bus_dmamap_load_bio for non-CAM disk drivers that wish to enable unmapped I/O. MFC: r249025 Add support for XPT_CONT_TARGET_IO CCBs in _bus_dmamap_load_ccb(). Declare CCB types in their respective switch blocks. MFC: r249538 Some compilers issue a warning when wider integer is casted to narrow pointer. Supposedly shut down the warning by casting through uintptr_t. MFC: r251221 Move an assertion to the right spot; only bus_dmamap_load_mbuf(9) requires a pkthdr being present but that's not the case for either _bus_dmamap_load_mbuf_sg() or bus_dmamap_load_mbuf_sg(9). Modified: stable/9/sys/kern/subr_bus_dma.c stable/9/sys/sys/bus_dma.h Directory Properties: stable/9/sys/ (props changed) stable/9/sys/sys/ (props changed) Modified: stable/9/sys/kern/subr_bus_dma.c ============================================================================== --- stable/9/sys/kern/subr_bus_dma.c Tue Jun 18 13:38:10 2013 (r251938) +++ stable/9/sys/kern/subr_bus_dma.c Tue Jun 18 14:20:14 2013 (r251939) @@ -104,8 +104,6 @@ _bus_dmamap_load_mbuf_sg(bus_dma_tag_t d struct mbuf *m; int error; - M_ASSERTPKTHDR(m0); - error = 0; for (m = m0; m != NULL && error == 0; m = m->m_next) { if (m->m_len > 0) { @@ -158,8 +156,6 @@ static int _bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, int *nsegs, int flags) { - struct ccb_ataio *ataio; - struct ccb_scsiio *csio; struct ccb_hdr *ccb_h; void *data_ptr; int error; @@ -169,18 +165,33 @@ _bus_dmamap_load_ccb(bus_dma_tag_t dmat, error = 0; ccb_h = &ccb->ccb_h; switch (ccb_h->func_code) { - case XPT_SCSI_IO: + case XPT_SCSI_IO: { + struct ccb_scsiio *csio; + csio = &ccb->csio; data_ptr = csio->data_ptr; dxfer_len = csio->dxfer_len; sglist_cnt = csio->sglist_cnt; break; - case XPT_ATA_IO: + } + case XPT_CONT_TARGET_IO: { + struct ccb_scsiio *ctio; + + ctio = &ccb->ctio; + data_ptr = ctio->data_ptr; + dxfer_len = ctio->dxfer_len; + sglist_cnt = ctio->sglist_cnt; + break; + } + case XPT_ATA_IO: { + struct ccb_ataio *ataio; + ataio = &ccb->ataio; data_ptr = ataio->data_ptr; dxfer_len = ataio->dxfer_len; sglist_cnt = 0; break; + } default: panic("_bus_dmamap_load_ccb: Unsupported func code %d", ccb_h->func_code); @@ -282,7 +293,7 @@ bus_dmamap_load(bus_dma_tag_t dmat, bus_ nsegs++; CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d", - __func__, dmat, flags, error, nsegs + 1); + __func__, dmat, flags, error, nsegs); if (error == EINPROGRESS) return (error); @@ -295,7 +306,7 @@ bus_dmamap_load(bus_dma_tag_t dmat, bus_ /* * Return ENOMEM to the caller so that it can pass it up the stack. - * This error only happens when NOWAIT is set, so deferal is disabled. + * This error only happens when NOWAIT is set, so deferral is disabled. */ if (error == ENOMEM) return (error); @@ -310,6 +321,8 @@ bus_dmamap_load_mbuf(bus_dma_tag_t dmat, bus_dma_segment_t *segs; int nsegs, error; + M_ASSERTPKTHDR(m0); + flags |= BUS_DMA_NOWAIT; nsegs = -1; error = _bus_dmamap_load_mbuf_sg(dmat, map, m0, NULL, &nsegs, flags); @@ -359,7 +372,7 @@ bus_dmamap_load_uio(bus_dma_tag_t dmat, (*callback)(callback_arg, segs, nsegs, uio->uio_resid, error); CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d", - __func__, dmat, dmat, error, nsegs + 1); + __func__, dmat, flags, error, nsegs); return (error); } @@ -386,6 +399,10 @@ bus_dmamap_load_ccb(bus_dma_tag_t dmat, nsegs = -1; error = _bus_dmamap_load_ccb(dmat, map, ccb, &nsegs, flags); nsegs++; + + CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d", + __func__, dmat, flags, error, nsegs); + if (error == EINPROGRESS) return (error); @@ -396,7 +413,46 @@ bus_dmamap_load_ccb(bus_dma_tag_t dmat, (*callback)(callback_arg, segs, nsegs, error); /* * Return ENOMEM to the caller so that it can pass it up the stack. - * This error only happens when NOWAIT is set, so deferal is disabled. + * This error only happens when NOWAIT is set, so deferral is disabled. + */ + if (error == ENOMEM) + return (error); + + return (0); +} + +int +bus_dmamap_load_bio(bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio, + bus_dmamap_callback_t *callback, void *callback_arg, + int flags) +{ + bus_dma_segment_t *segs; + struct memdesc mem; + int error; + int nsegs; + + if ((flags & BUS_DMA_NOWAIT) == 0) { + mem = memdesc_bio(bio); + _bus_dmamap_waitok(dmat, map, &mem, callback, callback_arg); + } + nsegs = -1; + error = _bus_dmamap_load_bio(dmat, map, bio, &nsegs, flags); + nsegs++; + + CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d", + __func__, dmat, flags, error, nsegs); + + if (error == EINPROGRESS) + return (error); + + segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error); + if (error) + (*callback)(callback_arg, segs, 0, error); + else + (*callback)(callback_arg, segs, nsegs, error); + /* + * Return ENOMEM to the caller so that it can pass it up the stack. + * This error only happens when NOWAIT is set, so deferral is disabled. */ if (error == ENOMEM) return (error); @@ -455,7 +511,7 @@ bus_dmamap_load_mem(bus_dma_tag_t dmat, nsegs++; CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d", - __func__, dmat, flags, error, nsegs + 1); + __func__, dmat, flags, error, nsegs); if (error == EINPROGRESS) return (error); @@ -468,7 +524,7 @@ bus_dmamap_load_mem(bus_dma_tag_t dmat, /* * Return ENOMEM to the caller so that it can pass it up the stack. - * This error only happens when NOWAIT is set, so deferal is disabled. + * This error only happens when NOWAIT is set, so deferral is disabled. */ if (error == ENOMEM) return (error); Modified: stable/9/sys/sys/bus_dma.h ============================================================================== --- stable/9/sys/sys/bus_dma.h Tue Jun 18 13:38:10 2013 (r251938) +++ stable/9/sys/sys/bus_dma.h Tue Jun 18 14:20:14 2013 (r251939) @@ -233,6 +233,13 @@ int bus_dmamap_load_ccb(bus_dma_tag_t dm int flags); /* + * Like bus_dmamap_load but for bios. + */ +int bus_dmamap_load_bio(bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio, + bus_dmamap_callback_t *callback, void *callback_arg, + int flags); + +/* * Loads any memory descriptor. */ int bus_dmamap_load_mem(bus_dma_tag_t dmat, bus_dmamap_t map,