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esp.c: copy PDMA logic for transfers to device from do_dma_pdma_cb() to esp_do_dma()

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This is so that PDMA transfers can be performend by esp_do_dma() as well as
do_dma_pdma_cb().

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: <20240112125420.514425-33-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2024-01-12 12:53:24 +00:00
parent 004826d03e
commit 19e9afb1a3
1 changed files with 9 additions and 0 deletions
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9
hw/scsi/esp.c
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@ -640,6 +640,7 @@ static void esp_do_dma(ESPState *s)
uint32_t len, cmdlen;
int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO);
uint8_t buf[ESP_CMDFIFO_SZ];
int n;
len = esp_get_tc(s);
if (s->do_cmd) {
@ -710,6 +711,14 @@ static void esp_do_dma(ESPState *s)
esp_dma_ti_check(s);
} else {
/* Copy FIFO data to device */
len = MIN(s->async_len, ESP_FIFO_SZ);
len = MIN(len, fifo8_num_used(&s->fifo));
n = esp_fifo_pop_buf(&s->fifo, s->async_buf, len);
s->async_buf += n;
s->async_len -= n;
s->ti_size += n;
esp_set_pdma_cb(s, DO_DMA_PDMA_CB);
esp_raise_drq(s);