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Re: [PATCH v2 40/42] esp: add trivial implementation of the ESP_RFLAGS r
From: |
Laurent Vivier |
Subject: |
Re: [PATCH v2 40/42] esp: add trivial implementation of the ESP_RFLAGS register |
Date: |
Wed, 3 Mar 2021 21:19:31 +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 :
> The bottom 5 bits contain the number of bytes remaining in the FIFO which is
> trivial to implement with Fifo8 (the remaining bits are unimplemented and left
> as 0 for now).
>
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
> hw/scsi/esp.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
> index 9dd9947307..1f01f2314b 100644
> --- a/hw/scsi/esp.c
> +++ b/hw/scsi/esp.c
> @@ -825,6 +825,10 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr)
> val = s->rregs[saddr];
> }
> break;
> + case ESP_RFLAGS:
> + /* Bottom 5 bits indicate number of bytes in FIFO */
> + val = fifo8_num_used(&s->fifo);
> + break;
> default:
> val = s->rregs[saddr];
> break;
>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
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