* [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers
@ 2014-06-09 15:03 Peter Maydell
2014-06-23 22:36 ` Peter Maydell
2014-06-27 10:25 ` Stefan Hajnoczi
0 siblings, 2 replies; 3+ messages in thread
From: Peter Maydell @ 2014-06-09 15:03 UTC (permalink / raw)
To: qemu-devel; +Cc: Stefan Hajnoczi, patches
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 <peter.maydell@linaro.org>
Message-id: 1402159924-13853-1-git-send-email-peter.maydell@linaro.org
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers
2014-06-09 15:03 [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers Peter Maydell
@ 2014-06-23 22:36 ` Peter Maydell
2014-06-27 10:25 ` Stefan Hajnoczi
1 sibling, 0 replies; 3+ messages in thread
From: Peter Maydell @ 2014-06-23 22:36 UTC (permalink / raw)
To: QEMU Developers; +Cc: Stefan Hajnoczi, Patch Tracking
Ping! Stefan, you said you were going to take this via the net queue?
thanks
-- PMM
On 9 June 2014 16:03, Peter Maydell <peter.maydell@linaro.org> 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 <peter.maydell@linaro.org>
> Message-id: 1402159924-13853-1-git-send-email-peter.maydell@linaro.org
> ---
> 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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers
2014-06-09 15:03 [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers Peter Maydell
2014-06-23 22:36 ` Peter Maydell
@ 2014-06-27 10:25 ` Stefan Hajnoczi
1 sibling, 0 replies; 3+ messages in thread
From: Stefan Hajnoczi @ 2014-06-27 10:25 UTC (permalink / raw)
To: Peter Maydell; +Cc: qemu-devel, patches
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On Mon, Jun 09, 2014 at 04:03:08PM +0100, Peter Maydell 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 <peter.maydell@linaro.org>
> Message-id: 1402159924-13853-1-git-send-email-peter.maydell@linaro.org
> ---
> No code change, but I fixed the errors in the commit message.
>
> hw/net/eepro100.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Thanks, applied to my net tree:
https://github.com/stefanha/qemu/commits/net
Stefan
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-06-09 15:03 [Qemu-devel] [PATCH v2] hw/net/eepro100: Implement read-only bits in MDI registers Peter Maydell
2014-06-23 22:36 ` Peter Maydell
2014-06-27 10:25 ` Stefan Hajnoczi
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