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Re: [PATCH v2 35/42] esp: raise interrupt after every non-DMA byte trans
From: |
Laurent Vivier |
Subject: |
Re: [PATCH v2 35/42] esp: raise interrupt after every non-DMA byte transferred to the FIFO |
Date: |
Wed, 3 Mar 2021 20:59:37 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 |
Le 09/02/2021 à 20:30, Mark Cave-Ayland a écrit :
> 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;
>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
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