| commit | cf1b8286007a5a12f7d42d484b8ac0e031038e2e | |
| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | |
| Thu, 4 Mar 2021 22:10:51 +0000 (4 22:10 +0000) | ||
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | |
| Sun, 7 Mar 2021 10:39:05 +0000 (7 10:39 +0000) | ||
| tree | 1aa011bb7227ce46ffc27fb86ca066a82f1ab93a | treesnapshot (tar.gz zip) |
| parent | 43d02df31b8679dcc69c4ffcdb6cc658e1d348f7 | commitdiff |
esp: add 4 byte PDMA read and write transfers
The MacOS toolbox ROM performs 4 byte reads/writes when transferring data to
and from the target. Since the SCSI bus is 16-bits wide, use the memory API
to split a 4 byte access into 2 x 2 byte accesses.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210304221103.6369-31-mark.cave-ayland@ilande.co.uk>
The MacOS toolbox ROM performs 4 byte reads/writes when transferring data to
and from the target. Since the SCSI bus is 16-bits wide, use the memory API
to split a 4 byte access into 2 x 2 byte accesses.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210304221103.6369-31-mark.cave-ayland@ilande.co.uk>
| hw/scsi/esp.c | diffblobblamehistory |