Author: mav
Date: Tue Feb 17 19:17:25 2009
New Revision: 188725
URL: http://svn.freebsd.org/changeset/base/188725
Log:
Add kernel dumping support. Works fine with sdhci controller driver.
Modified:
head/sys/dev/mmc/mmcsd.c
Modified: head/sys/dev/mmc/mmcsd.c
==============================================================================
--- head/sys/dev/mmc/mmcsd.c Tue Feb 17 19:12:15 2009 (r188724)
+++ head/sys/dev/mmc/mmcsd.c Tue Feb 17 19:17:25 2009 (r188725)
@@ -91,6 +91,8 @@ static int mmcsd_detach(device_t dev);
static int mmcsd_open(struct disk *dp);
static int mmcsd_close(struct disk *dp);
static void mmcsd_strategy(struct bio *bp);
+static int mmcsd_dump(void *arg, void *virtual, vm_offset_t physical,
+ off_t offset, size_t length);
static void mmcsd_task(void *arg);
static const char *mmcsd_card_name(device_t dev);
@@ -130,7 +132,7 @@ mmcsd_attach(device_t dev)
d->d_open = mmcsd_open;
d->d_close = mmcsd_close;
d->d_strategy = mmcsd_strategy;
- // d->d_dump = mmcsd_dump; Need polling mmc layer
+ d->d_dump = mmcsd_dump;
d->d_name = "mmcsd";
d->d_drv1 = sc;
d->d_maxsize = 4*1024*1024; /* Maximum defined SD card AU size. */
@@ -415,6 +417,33 @@ mmcsd_delete(struct mmcsd_softc *sc, str
return (end);
}
+static int
+mmcsd_dump(void *arg, void *virtual, vm_offset_t physical,
+ off_t offset, size_t length)
+{
+ struct disk *disk = arg;
+ struct mmcsd_softc *sc = (struct mmcsd_softc *)disk->d_drv1;
+ device_t dev = sc->dev;
+ struct bio bp;
+ daddr_t block, end;
+
+ /* length zero is special and really means flush buffers to media */
+ if (!length)
+ return (0);
+
+ bzero(&bp, sizeof(struct bio));
+ bp.bio_disk = disk;
+ bp.bio_pblkno = offset / disk->d_sectorsize;
+ bp.bio_bcount = length;
+ bp.bio_data = virtual;
+ bp.bio_cmd = BIO_WRITE;
+ end = bp.bio_pblkno + bp.bio_bcount / sc->disk->d_sectorsize;
+ MMCBUS_ACQUIRE_BUS(device_get_parent(dev), dev);
+ block = mmcsd_rw(sc, &bp);
+ MMCBUS_RELEASE_BUS(device_get_parent(dev), dev);
+ return ((end < block) ? EIO : 0);
+}
+
static void
mmcsd_task(void *arg)
{
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