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Re: [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers |
Date: |
Mon, 23 Jun 2014 23:36:30 +0100 |
Ping! Stefan, you said you were going to take this via the net queue?
thanks
-- PMM
On 9 June 2014 16:03, Peter Maydell <address@hidden> wrote:
> Although we defined an eepro100_mdi_mask[] array indicating which bits
> in the registers are read-only, we weren't actually doing anything with
> it. Make the MDI register-write code use it rather than manually making
> register 1 read-only and leaving the rest as reads-as-written. (The
> special-case handling of register 0 remains as before since its mask is
> all-zeros and the special casing happens before we apply the masking.)
>
> Signed-off-by: Peter Maydell <address@hidden>
> Message-id: address@hidden
> ---
> No code change, but I fixed the errors in the commit message.
>
> hw/net/eepro100.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c
> index 3b891ca..9c70cce 100644
> --- a/hw/net/eepro100.c
> +++ b/hw/net/eepro100.c
> @@ -1217,7 +1217,6 @@ static void eepro100_write_mdi(EEPRO100State *s)
> break;
> case 1: /* Status Register */
> missing("not writable");
> - data = s->mdimem[reg];
> break;
> case 2: /* PHY Identification Register (Word 1) */
> case 3: /* PHY Identification Register (Word 2) */
> @@ -1230,7 +1229,8 @@ static void eepro100_write_mdi(EEPRO100State *s)
> default:
> missing("not implemented");
> }
> - s->mdimem[reg] = data;
> + s->mdimem[reg] &= eepro100_mdi_mask[reg];
> + s->mdimem[reg] |= data & ~eepro100_mdi_mask[reg];
> } else if (opcode == 2) {
> /* MDI read */
> switch (reg) {
> --
> 1.9.2