diff options
| -rw-r--r-- | sys/dev/esp/ncr53c9x.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/dev/esp/ncr53c9x.c b/sys/dev/esp/ncr53c9x.c index 8523a4b..f9f08b4 100644 --- a/sys/dev/esp/ncr53c9x.c +++ b/sys/dev/esp/ncr53c9x.c @@ -2228,6 +2228,11 @@ again: * a DATA transfer. Print a diagnostic * if the DMA counter and TC bit * appear to be out of sync. + * + * XXX This is fatal and usually means that + * the DMA engine is hopelessly out of + * sync with reality. A disk is likely + * getting spammed at this point. */ device_printf(sc->sc_dev, "!TC on DATA XFER" " [intr %x, stat %x, step %d]" @@ -2237,6 +2242,7 @@ again: sc->sc_espstep, sc->sc_prevphase, ecb ? ecb->dleft : -1); + panic("esp: unrecoverable DMA error"); } } } |
