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authorMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2021-03-04 22:10:33 +0000
committerMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2021-03-07 10:39:05 +0000
commit5eb7a23fb22f10f09cecba61e7bf61cecaee3f96 (patch)
tree287d0f6f6a6c6ba6151c6ca9b1e92f0803709814 /hw/scsi
parent96676c2f749d9da99ee03ec0eee342bd7d09de26 (diff)
esp: remove dma_counter from ESPState
The value of dma_counter is set once at the start of the transfer and remains the same until the transfer is complete. This allows the check in esp_transfer_data to be simplified since dma_left will always be non-zero until the transfer is completed. 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: <20210304221103.6369-13-mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'hw/scsi')
-rw-r--r--hw/scsi/esp.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index 349067eb6a..15c4c33052 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -229,7 +229,6 @@ static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
if (datalen != 0) {
s->rregs[ESP_RSTAT] = STAT_TC;
s->dma_left = 0;
- s->dma_counter = 0;
if (datalen > 0) {
s->rregs[ESP_RSTAT] |= STAT_DI;
} else {
@@ -542,7 +541,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
s->async_buf = scsi_req_get_buf(req);
if (s->dma_left) {
esp_do_dma(s);
- } else if (s->dma_counter != 0 && s->ti_size <= 0) {
+ } else if (s->ti_size <= 0) {
/*
* If this was the last part of a DMA transfer then the
* completion interrupt is deferred to here.
@@ -561,7 +560,6 @@ static void handle_ti(ESPState *s)
}
dmalen = esp_get_tc(s);
- s->dma_counter = dmalen;
if (s->do_cmd) {
minlen = (dmalen < ESP_CMDBUF_SZ) ? dmalen : ESP_CMDBUF_SZ;