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esp: use in-built TC to determine PDMA transfer length

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Real hardware simply counts down using the in-built TC to determine when the
the PDMA request is complete. Use the TC to determine the PDMA transfer length
which then enables us to remove the redundant pdma_len variable.

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: <20210304221103.6369-25-mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2021-03-04 22:10:45 +00:00
parent ad7f468c42
commit 3c421400ff
2 changed files with 13 additions and 16 deletions
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1
include/hw/scsi/esp.h
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@ -57,7 +57,6 @@ struct ESPState {
void *dma_opaque;
void (*dma_cb)(ESPState *s);
int pdma_origin;
uint32_t pdma_len;
void (*pdma_cb)(ESPState *s);
uint8_t mig_version_id;