tree 30299e61804db8629cb1e22c7a99e974941b67e0
parent 82003450666e7a91efcb478e7c7d72d3eb679203
author Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> 1705064036 +0000
committer Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> 1707853048 +0000

esp.c: don't raise INTR_BS interrupt in DATA IN phase until TI command issued

In the case where a SCSI command with a DATA IN phase has been issued, the host
may preload the FIFO with unaligned bytes before issuing the main DMA transfer.

When accumulating data in the FIFO don't raise the INTR_BS interrupt until the
TI command is issued, otherwise the unexpected interrupt can confuse the host.
In particular this is needed to prevent the MacOS Disk Utility from failing
when switching non-DMA transfers to use esp_do_nodma().

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Helge Deller <deller@gmx.de>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240112125420.514425-65-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>