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[PATCH v2 08/42] esp: determine transfer direction directly from SCSI ph
From: |
Mark Cave-Ayland |
Subject: |
[PATCH v2 08/42] esp: determine transfer direction directly from SCSI phase |
Date: |
Tue, 9 Feb 2021 19:29:44 +0000 |
The transfer direction is currently determined by checking the sign of ti_size
but as this series progresses ti_size can be zero at the end of the transfer.
Use the SCSI phase to determine the transfer direction as used in other SCSI
controller implementations.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
hw/scsi/esp.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index db2ea02549..e82e75d490 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -356,7 +356,7 @@ static void esp_dma_done(ESPState *s)
static void do_dma_pdma_cb(ESPState *s)
{
- int to_device = (s->ti_size < 0);
+ int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO);
int len = s->pdma_cur - s->pdma_start;
if (s->do_cmd) {
s->ti_size = 0;
@@ -392,7 +392,7 @@ static void do_dma_pdma_cb(ESPState *s)
static void esp_do_dma(ESPState *s)
{
uint32_t len;
- int to_device;
+ int to_device = ((s->rregs[ESP_RSTAT] & 7) == STAT_DO);
len = s->dma_left;
if (s->do_cmd) {
@@ -425,7 +425,6 @@ static void esp_do_dma(ESPState *s)
if (len > s->async_len) {
len = s->async_len;
}
- to_device = (s->ti_size < 0);
if (to_device) {
if (s->dma_memory_read) {
s->dma_memory_read(s->dma_opaque, s->async_buf, len);
--
2.20.1
- [PATCH v2 02/42] esp: rename existing ESP QOM type to SYSBUS_ESP, (continued)
- [PATCH v2 02/42] esp: rename existing ESP QOM type to SYSBUS_ESP, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 03/42] esp: QOMify the internal ESP device state, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 04/42] esp: add vmstate_esp version to embedded ESPState, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 05/42] esp: add trace event when receiving a TI command, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 06/42] esp: fix esp_reg_read() trace event, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 07/42] esp: add PDMA trace events, Mark Cave-Ayland, 2021/02/09
- [PATCH v2 08/42] esp: determine transfer direction directly from SCSI phase,
Mark Cave-Ayland <=
- [PATCH v2 09/42] esp: introduce esp_get_tc() and esp_set_tc(), Mark Cave-Ayland, 2021/02/09
- [PATCH v2 10/42] esp: introduce esp_get_stc(), Mark Cave-Ayland, 2021/02/09
[PATCH v2 11/42] esp: apply transfer length adjustment when STC is zero at TC load time, Mark Cave-Ayland, 2021/02/09