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Allow unmapped I/O via aacd(4). It shouldn't be too hard to add the

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same support for aacp(4), I'm lacking the necessary hardware for
testing, though.
This commit is contained in:
Marius Strobl 2013-05-30 00:22:07 +00:00
parent 5ba8a38ee4
commit 8fce673c58
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=251116
3 changed files with 13 additions and 6 deletions
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16
sys/dev/aac/aac.c
View File

@ -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, struct aac_command **cmp)
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;

1
sys/dev/aac/aac_disk.c
View File

@ -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;

2
sys/dev/aac/aacvar.h
View File

@ -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;