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[PATCH v2 35/42] esp: raise interrupt after every non-DMA byte transferr
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From: |
Mark Cave-Ayland |
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Subject: |
[PATCH v2 35/42] esp: raise interrupt after every non-DMA byte transferred to the FIFO |
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Date: |
Tue, 9 Feb 2021 19:30:11 +0000 |
This matches the description in the datasheet and is required as support for
non-DMA transfers is added.
Signed-off-by: Mark Cave-Ayland <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 8b856155d1..617fdcb3ed 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -767,6 +767,12 @@ 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;
--
2.20.1
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, (continued)
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, Mark Cave-Ayland, 2021/02/15
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, Philippe Mathieu-Daudé, 2021/02/16
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, Mark Cave-Ayland, 2021/02/16
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, Mark Cave-Ayland, 2021/02/23
- Re: [PATCH v2 30/42] esp: add 4 byte PDMA read and write transfers, Philippe Mathieu-Daudé, 2021/02/23
[PATCH v2 31/42] esp: implement FIFO flush command, Mark Cave-Ayland, 2021/02/09
[PATCH v2 32/42] esp: latch individual bits in ESP_RINTR register, Mark Cave-Ayland, 2021/02/09
[PATCH v2 34/42] esp: remove old deferred command completion mechanism, Mark Cave-Ayland, 2021/02/09
[PATCH v2 33/42] esp: defer command completion interrupt on incoming data transfers, Mark Cave-Ayland, 2021/02/09
[PATCH v2 35/42] esp: raise interrupt after every non-DMA byte transferred to the FIFO,
Mark Cave-Ayland <=
[PATCH v2 37/42] esp: transition to message out phase after SATN and stop command, Mark Cave-Ayland, 2021/02/09
[PATCH v2 36/42] esp: add maxlen parameter to get_cmd(), Mark Cave-Ayland, 2021/02/09
[PATCH v2 38/42] esp: convert ti_buf from array to Fifo8, Mark Cave-Ayland, 2021/02/09
[PATCH v2 39/42] esp: convert cmdbuf from array to Fifo8, Mark Cave-Ayland, 2021/02/09
[PATCH v2 40/42] esp: add trivial implementation of the ESP_RFLAGS register, Mark Cave-Ayland, 2021/02/09
[PATCH v2 41/42] esp: implement non-DMA transfers in PDMA mode, Mark Cave-Ayland, 2021/02/09