Date: Thu, 30 May 2013 00:22:07 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r251116 - head/sys/dev/aac Message-ID: <201305300022.r4U0M7rX020019@svn.freebsd.org>
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Author: marius Date: Thu May 30 00:22:07 2013 New Revision: 251116 URL: http://svnweb.freebsd.org/changeset/base/251116 Log: Allow unmapped I/O via aacd(4). It shouldn't be too hard to add the same support for aacp(4), I'm lacking the necessary hardware for testing, though. Modified: head/sys/dev/aac/aac.c head/sys/dev/aac/aac_disk.c head/sys/dev/aac/aacvar.h Modified: head/sys/dev/aac/aac.c ============================================================================== --- head/sys/dev/aac/aac.c Thu May 30 00:11:22 2013 (r251115) +++ head/sys/dev/aac/aac.c Thu May 30 00:22:07 2013 (r251116) @@ -987,14 +987,18 @@ aac_startio(struct aac_softc *sc) * busdma. */ if (cm->cm_datalen != 0) { - error = bus_dmamap_load(sc->aac_buffer_dmat, - cm->cm_datamap, cm->cm_data, - cm->cm_datalen, - aac_map_command_sg, cm, 0); + if (cm->cm_flags & AAC_REQ_BIO) + error = bus_dmamap_load_bio( + sc->aac_buffer_dmat, cm->cm_datamap, + (struct bio *)cm->cm_private, + aac_map_command_sg, cm, 0); + else + error = bus_dmamap_load(sc->aac_buffer_dmat, + cm->cm_datamap, cm->cm_data, + cm->cm_datalen, aac_map_command_sg, cm, 0); if (error == EINPROGRESS) { fwprintf(sc, HBA_FLAGS_DBG_COMM_B, "freezing queue\n"); sc->flags |= AAC_QUEUE_FRZN; - error = 0; } else if (error != 0) panic("aac_startio: unexpected error %d from " "busdma", error); @@ -1199,9 +1203,9 @@ aac_bio_command(struct aac_softc *sc, st goto fail; /* fill out the command */ - cm->cm_data = (void *)bp->bio_data; cm->cm_datalen = bp->bio_bcount; cm->cm_complete = aac_bio_complete; + cm->cm_flags = AAC_REQ_BIO; cm->cm_private = bp; cm->cm_timestamp = time_uptime; Modified: head/sys/dev/aac/aac_disk.c ============================================================================== --- head/sys/dev/aac/aac_disk.c Thu May 30 00:11:22 2013 (r251115) +++ head/sys/dev/aac/aac_disk.c Thu May 30 00:22:07 2013 (r251116) @@ -397,6 +397,7 @@ aac_disk_attach(device_t dev) sc->unit = device_get_unit(dev); sc->ad_disk = disk_alloc(); sc->ad_disk->d_drv1 = sc; + sc->ad_disk->d_flags = DISKFLAG_UNMAPPED_BIO; sc->ad_disk->d_name = "aacd"; sc->ad_disk->d_maxsize = sc->ad_controller->aac_max_sectors << 9; sc->ad_disk->d_open = aac_disk_open; Modified: head/sys/dev/aac/aacvar.h ============================================================================== --- head/sys/dev/aac/aacvar.h Thu May 30 00:11:22 2013 (r251115) +++ head/sys/dev/aac/aacvar.h Thu May 30 00:22:07 2013 (r251116) @@ -181,6 +181,8 @@ struct aac_command #define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)|(1<<8)|(1<<10)) #define AAC_QUEUE_FRZN (1<<9) /* Freeze the processing of * commands on the queue. */ +#define AAC_REQ_BIO (1 << 11) +#define AAC_REQ_CCB (1 << 12) void (*cm_complete)(struct aac_command *cm); void *cm_private;
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