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(parent: 43d02df) | patch
esp: add 4 byte PDMA read and write transfers
authorMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Thu, 4 Mar 2021 22:10:51 +0000 (22:10 +0000)
committerMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Sun, 7 Mar 2021 10:39:05 +0000 (10:39 +0000)
commitcf1b8286007a5a12f7d42d484b8ac0e031038e2e
tree1aa011bb7227ce46ffc27fb86ca066a82f1ab93atree | snapshot
parent43d02df31b8679dcc69c4ffcdb6cc658e1d348f7commit | diff
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>
hw/scsi/esp.c diff | blob | history
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