From 4e0ed62937d0498295457c2e1d8282a24ba140cb Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Thu, 4 Mar 2021 22:10:56 +0000 Subject: [PATCH] esp: raise interrupt after every non-DMA byte transferred to the FIFO This matches the description in the datasheet and is required as support for non-DMA transfers is added. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laurent Vivier Message-Id: <20210304221103.6369-36-mark.cave-ayland@ilande.co.uk> --- hw/scsi/esp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index eb6681ca66..4ac299651f 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -760,6 +760,12 @@ void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) s->ti_size++; s->ti_buf[s->ti_wptr++] = val & 0xff; } + + /* Non-DMA transfers raise an interrupt after every byte */ + if (s->rregs[ESP_CMD] == CMD_TI) { + s->rregs[ESP_RINTR] |= INTR_FC | INTR_BS; + esp_raise_irq(s); + } break; case ESP_CMD: s->rregs[saddr] = val; -- 2.11.4.GIT