* LEON3 networking
@ 2019-10-15 13:17 Joshua Shaffer
2019-10-15 16:53 ` Joshua Shaffer
2019-10-15 16:57 ` Philippe Mathieu-Daudé
0 siblings, 2 replies; 10+ messages in thread
From: Joshua Shaffer @ 2019-10-15 13:17 UTC (permalink / raw)
To: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 1312 bytes --]
Hello,
I've been using the LEON3 port of qemu, and am wondering if anyone has
touched the networking setup for such since the thread here:
https://lists.rtems.org/pipermail/users/2014-September/028224.html
Joshua Shaffer
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-15 13:17 LEON3 networking Joshua Shaffer
@ 2019-10-15 16:53 ` Joshua Shaffer
2019-10-15 16:57 ` Philippe Mathieu-Daudé
1 sibling, 0 replies; 10+ messages in thread
From: Joshua Shaffer @ 2019-10-15 16:53 UTC (permalink / raw)
To: qemu-devel
Hello,
I've been using the LEON3 port of qemu, and am wondering if anyone has
touched the networking setup for such since the thread here:
https://lists.rtems.org/pipermail/users/2014-September/028224.html
On Tue, Oct 15, 2019 at 9:17 AM Joshua Shaffer
<joshua.shaffer@astrobotic.com> wrote:
>
> Hello,
>
> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>
> Joshua Shaffer
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-15 13:17 LEON3 networking Joshua Shaffer
2019-10-15 16:53 ` Joshua Shaffer
@ 2019-10-15 16:57 ` Philippe Mathieu-Daudé
2019-10-16 10:34 ` Fabien Chouteau
1 sibling, 1 reply; 10+ messages in thread
From: Philippe Mathieu-Daudé @ 2019-10-15 16:57 UTC (permalink / raw)
To: Joshua Shaffer, qemu-devel, Jiri Gaisler, Fabien Chouteau,
KONRAD Frederic, Mark Cave-Ayland, Artyom Tarasenko
Hi Joshua,
On 10/15/19 3:17 PM, Joshua Shaffer wrote:
> Hello,
>
> I've been using the LEON3 port of qemu, and am wondering if anyone has
> touched the networking setup for such since the thread here:
> https://lists.rtems.org/pipermail/users/2014-September/028224.html
Thanks for sharing this!
Good news, Jiri keeps rebasing his patch with the latest stable version.
Bad news, he didn't not signed his work with a "Signed-off-by" tag so we
can not take this as it into the mainstream repository, see
https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
Note we have maintainers for the Leon3, I'm Cc'ing them:
$ ./scripts/get_maintainer.pl -f hw/sparc/leon3.c
Fabien Chouteau <chouteau@adacore.com> (maintainer:Leon3)
KONRAD Frederic <frederic.konrad@adacore.com> (maintainer:Leon3)
Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (maintainer:SPARC TCG CPUs)
Artyom Tarasenko <atar4qemu@gmail.com> (maintainer:SPARC TCG CPUs)
qemu-devel@nongnu.org (open list:All patches CC here)
Regards,
Phil.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-15 16:57 ` Philippe Mathieu-Daudé
@ 2019-10-16 10:34 ` Fabien Chouteau
2019-10-23 16:59 ` Joshua Shaffer
0 siblings, 1 reply; 10+ messages in thread
From: Fabien Chouteau @ 2019-10-16 10:34 UTC (permalink / raw)
To: Philippe Mathieu-Daudé,
Joshua Shaffer, qemu-devel, Jiri Gaisler, KONRAD Frederic,
Mark Cave-Ayland, Artyom Tarasenko
Hello people,
On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
> Hi Joshua,
>
> On 10/15/19 3:17 PM, Joshua Shaffer wrote:
>> Hello,
>>
>> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>
> Thanks for sharing this!
>
> Good news, Jiri keeps rebasing his patch with the latest stable version.
> Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
>
The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
(see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
But none of them are implementing network support, and I never heard of someone working on network for leon3.
Regards,
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-16 10:34 ` Fabien Chouteau
@ 2019-10-23 16:59 ` Joshua Shaffer
2019-10-23 18:37 ` Jiri Gaisler
0 siblings, 1 reply; 10+ messages in thread
From: Joshua Shaffer @ 2019-10-23 16:59 UTC (permalink / raw)
To: Fabien Chouteau
Cc: Mark Cave-Ayland, qemu-devel, KONRAD Frederic, Artyom Tarasenko,
Philippe Mathieu-Daudé,
Jiri Gaisler
Does anyone know what needs implemented to get networking supported?
Joshua
On Wed, Oct 16, 2019 at 6:34 AM Fabien Chouteau <chouteau@adacore.com> wrote:
>
> Hello people,
>
> On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
> > Hi Joshua,
> >
> > On 10/15/19 3:17 PM, Joshua Shaffer wrote:
> >> Hello,
> >>
> >> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
> >
> > Thanks for sharing this!
> >
> > Good news, Jiri keeps rebasing his patch with the latest stable version.
> > Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
> >
>
> The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
> (see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
>
> But none of them are implementing network support, and I never heard of someone working on network for leon3.
>
> Regards,
>
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Notice: This message is intended solely for use of the individual or entity
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-23 16:59 ` Joshua Shaffer
@ 2019-10-23 18:37 ` Jiri Gaisler
2019-10-23 19:55 ` Jiri Gaisler
0 siblings, 1 reply; 10+ messages in thread
From: Jiri Gaisler @ 2019-10-23 18:37 UTC (permalink / raw)
To: Joshua Shaffer, Fabien Chouteau
Cc: Mark Cave-Ayland, KONRAD Frederic, Philippe Mathieu-Daudé,
qemu-devel, Artyom Tarasenko
Leon3 uses the GRETH ethernet IP core for networking. You would need to
write a qemu emulation model of it to get networking support. The GRETH
is fairly well described in the GRLIB IP manual, so it should not be
impossible. The core is also available in open-source (VHDL) if you need
to look up some finer details ... :-)
Jiri.
On 10/23/19 6:59 PM, Joshua Shaffer wrote:
> Does anyone know what needs implemented to get networking supported?
>
> Joshua
>
> On Wed, Oct 16, 2019 at 6:34 AM Fabien Chouteau <chouteau@adacore.com> wrote:
>> Hello people,
>>
>> On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
>>> Hi Joshua,
>>>
>>> On 10/15/19 3:17 PM, Joshua Shaffer wrote:
>>>> Hello,
>>>>
>>>> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>>> Thanks for sharing this!
>>>
>>> Good news, Jiri keeps rebasing his patch with the latest stable version.
>>> Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
>>>
>> The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
>> (see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
>>
>> But none of them are implementing network support, and I never heard of someone working on network for leon3.
>>
>> Regards,
>>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-23 18:37 ` Jiri Gaisler
@ 2019-10-23 19:55 ` Jiri Gaisler
2019-10-23 22:31 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 10+ messages in thread
From: Jiri Gaisler @ 2019-10-23 19:55 UTC (permalink / raw)
To: Joshua Shaffer, Fabien Chouteau
Cc: Mark Cave-Ayland, KONRAD Frederic, Philippe Mathieu-Daudé,
qemu-devel, Artyom Tarasenko
[-- Attachment #1: Type: text/plain, Size: 1851 bytes --]
BTW, here is a patch that you might want to apply to qemu if you intend
to run RTEMS on leon3. The plug&play area must support byte accesses,
which is used by the RTEMS grlib scanning functions...
Jiri.
On 10/23/19 8:37 PM, Jiri Gaisler wrote:
> Leon3 uses the GRETH ethernet IP core for networking. You would need to
> write a qemu emulation model of it to get networking support. The GRETH
> is fairly well described in the GRLIB IP manual, so it should not be
> impossible. The core is also available in open-source (VHDL) if you need
> to look up some finer details ... :-)
>
> Jiri.
>
> On 10/23/19 6:59 PM, Joshua Shaffer wrote:
>> Does anyone know what needs implemented to get networking supported?
>>
>> Joshua
>>
>> On Wed, Oct 16, 2019 at 6:34 AM Fabien Chouteau <chouteau@adacore.com> wrote:
>>> Hello people,
>>>
>>> On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
>>>> Hi Joshua,
>>>>
>>>> On 10/15/19 3:17 PM, Joshua Shaffer wrote:
>>>>> Hello,
>>>>>
>>>>> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>>>> Thanks for sharing this!
>>>>
>>>> Good news, Jiri keeps rebasing his patch with the latest stable version.
>>>> Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
>>>>
>>> The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
>>> (see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
>>>
>>> But none of them are implementing network support, and I never heard of someone working on network for leon3.
>>>
>>> Regards,
>>>
[-- Attachment #2: qemu-4.1.0-leon3.patch --]
[-- Type: text/x-patch, Size: 459 bytes --]
diff --git a/hw/misc/grlib_ahb_apb_pnp.c b/hw/misc/grlib_ahb_apb_pnp.c
index 7338461694..eaaedbfbcc 100644
--- a/hw/misc/grlib_ahb_apb_pnp.c
+++ b/hw/misc/grlib_ahb_apb_pnp.c
@@ -228,6 +228,9 @@ static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size)
{
APBPnp *apb_pnp = GRLIB_APB_PNP(opaque);
+ if (size != 4)
+ return apb_pnp->regs[offset >> 2] >> ((~offset & 3) * 8);
+
return apb_pnp->regs[offset >> 2];
}
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-23 19:55 ` Jiri Gaisler
@ 2019-10-23 22:31 ` Philippe Mathieu-Daudé
2019-10-24 7:31 ` Jiri Gaisler
0 siblings, 1 reply; 10+ messages in thread
From: Philippe Mathieu-Daudé @ 2019-10-23 22:31 UTC (permalink / raw)
To: Jiri Gaisler, Joshua Shaffer, Fabien Chouteau, KONRAD Frederic
Cc: Mark Cave-Ayland, qemu-devel, Artyom Tarasenko
Hi Jiri,
On 10/23/19 9:55 PM, Jiri Gaisler wrote:
> BTW, here is a patch that you might want to apply to qemu if you intend
> to run RTEMS on leon3. The plug&play area must support byte accesses,
> which is used by the RTEMS grlib scanning functions...
Do you mean this one?
http://gaisler.org/qemu/qemu-4.1.0-leon3.patch
-- >8 --
--- a/hw/misc/grlib_ahb_apb_pnp.c
+++ b/hw/misc/grlib_ahb_apb_pnp.c
@@ -228,6 +228,9 @@ static uint64_t grlib_apb_pnp_read(void *opaque,
hwaddr offset, unsigned size)
{
APBPnp *apb_pnp = GRLIB_APB_PNP(opaque);
+ if (size != 4)
+ return apb_pnp->regs[offset >> 2] >> ((~offset & 3) * 8);
+
return apb_pnp->regs[offset >> 2];
}
---
But then this is incorrect for 16-bit accesses.
The proper patch might be:
-- >8 --
@@ -234,6 +234,13 @@ static uint64_t grlib_apb_pnp_read(void *opaque,
hwaddr offset, unsigned size)
static const MemoryRegionOps grlib_apb_pnp_ops = {
.read = grlib_apb_pnp_read,
.endianness = DEVICE_BIG_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ },
+ .impl = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
};
---
(Unrelated note, this device model lacks the MemoryRegionOps::write
handler).
> Jiri.
>
> On 10/23/19 8:37 PM, Jiri Gaisler wrote:
>> Leon3 uses the GRETH ethernet IP core for networking. You would need to
>> write a qemu emulation model of it to get networking support. The GRETH
>> is fairly well described in the GRLIB IP manual, so it should not be
>> impossible. The core is also available in open-source (VHDL) if you need
>> to look up some finer details ... :-)
>>
>> Jiri.
>>
>> On 10/23/19 6:59 PM, Joshua Shaffer wrote:
>>> Does anyone know what needs implemented to get networking supported?
>>>
>>> Joshua
>>>
>>> On Wed, Oct 16, 2019 at 6:34 AM Fabien Chouteau <chouteau@adacore.com> wrote:
>>>> Hello people,
>>>>
>>>> On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
>>>>> Hi Joshua,
>>>>>
>>>>> On 10/15/19 3:17 PM, Joshua Shaffer wrote:
>>>>>> Hello,
>>>>>>
>>>>>> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>>>>> Thanks for sharing this!
>>>>>
>>>>> Good news, Jiri keeps rebasing his patch with the latest stable version.
>>>>> Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
>>>>>
>>>> The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
>>>> (see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
>>>>
>>>> But none of them are implementing network support, and I never heard of someone working on network for leon3.
>>>>
>>>> Regards,
>>>>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: LEON3 networking
2019-10-23 22:31 ` Philippe Mathieu-Daudé
@ 2019-10-24 7:31 ` Jiri Gaisler
0 siblings, 0 replies; 10+ messages in thread
From: Jiri Gaisler @ 2019-10-24 7:31 UTC (permalink / raw)
To: Philippe Mathieu-Daudé,
Joshua Shaffer, Fabien Chouteau, KONRAD Frederic
Cc: Mark Cave-Ayland, qemu-devel, Artyom Tarasenko
On 10/24/19 12:31 AM, Philippe Mathieu-Daudé wrote:
> Hi Jiri,
>
> On 10/23/19 9:55 PM, Jiri Gaisler wrote:
>> BTW, here is a patch that you might want to apply to qemu if you intend
>> to run RTEMS on leon3. The plug&play area must support byte accesses,
>> which is used by the RTEMS grlib scanning functions...
>
> Do you mean this one?
>
> http://gaisler.org/qemu/qemu-4.1.0-leon3.patch
Yes.
>
> -- >8 --
> --- a/hw/misc/grlib_ahb_apb_pnp.c
> +++ b/hw/misc/grlib_ahb_apb_pnp.c
> @@ -228,6 +228,9 @@ static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size)
> {
> APBPnp *apb_pnp = GRLIB_APB_PNP(opaque);
>
> + if (size != 4)
> + return apb_pnp->regs[offset >> 2] >> ((~offset & 3) * 8);
> +
> return apb_pnp->regs[offset >> 2];
> }
>
> ---
>
> But then this is incorrect for 16-bit accesses.
Correct, it only fixes 8-bit accesses so that RTEMS can boot.
>
> The proper patch might be:
>
> -- >8 --
> @@ -234,6 +234,13 @@ static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size)
> static const MemoryRegionOps grlib_apb_pnp_ops = {
> .read = grlib_apb_pnp_read,
> .endianness = DEVICE_BIG_ENDIAN,
> + .valid = {
> + .min_access_size = 1,
> + },
> + .impl = {
> + .min_access_size = 4,
> + .max_access_size = 4,
> + },
> };
>
I don't know enough about qemu internals to have an opinion on this, but it certainly looks much more elegant than my simple fix .. :-)
Jiri.
> ---
>
> (Unrelated note, this device model lacks the MemoryRegionOps::write handler).
>
>> Jiri.
>>
>> On 10/23/19 8:37 PM, Jiri Gaisler wrote:
>>> Leon3 uses the GRETH ethernet IP core for networking. You would need to
>>> write a qemu emulation model of it to get networking support. The GRETH
>>> is fairly well described in the GRLIB IP manual, so it should not be
>>> impossible. The core is also available in open-source (VHDL) if you need
>>> to look up some finer details ... :-)
>>>
>>> Jiri.
>>>
>>> On 10/23/19 6:59 PM, Joshua Shaffer wrote:
>>>> Does anyone know what needs implemented to get networking supported?
>>>>
>>>> Joshua
>>>>
>>>> On Wed, Oct 16, 2019 at 6:34 AM Fabien Chouteau <chouteau@adacore.com> wrote:
>>>>> Hello people,
>>>>>
>>>>> On 15/10/2019 18:57, Philippe Mathieu-Daudé wrote:
>>>>>> Hi Joshua,
>>>>>>
>>>>>> On 10/15/19 3:17 PM, Joshua Shaffer wrote:
>>>>>>> Hello,
>>>>>>>
>>>>>>> I've been using the LEON3 port of qemu, and am wondering if anyone has touched the networking setup for such since the thread here: https://lists.rtems.org/pipermail/users/2014-September/028224.html
>>>>>> Thanks for sharing this!
>>>>>>
>>>>>> Good news, Jiri keeps rebasing his patch with the latest stable version.
>>>>>> Bad news, he didn't not signed his work with a "Signed-off-by" tag so we can not take this as it into the mainstream repository, see https://wiki.qemu.org/Contribute/SubmitAPatch#Patch_emails_must_include_a_Signed-off-by:_line
>>>>>>
>>>>> The Gaisler patches have been rewrote by my colleague Frederic (in CC) and they are now in mainstream.
>>>>> (see https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg03869.html)
>>>>>
>>>>> But none of them are implementing network support, and I never heard of someone working on network for leon3.
>>>>>
>>>>> Regards,
>>>>>
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* LEON3 networking
@ 2019-10-15 16:54 Joshua Shaffer
0 siblings, 0 replies; 10+ messages in thread
From: Joshua Shaffer @ 2019-10-15 16:54 UTC (permalink / raw)
To: qemu-devel
Hello,
I've been using the LEON3 port of qemu, and am wondering if anyone has
touched the networking setup for such since the thread here:
https://lists.rtems.org/pipermail/users/2014-September/028224.html
--
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applicable law. If the reader is not the intended recipient or agent
responsible for delivering the message to the intended recipient, you are
hereby notified that any dissemination, distribution or copying of this
communication is strictly prohibited. This communication may also contain
data subject to the International Traffic in Arms Regulations or U.S.
Export Administration Regulations and cannot be disseminated, distributed
or copied to foreign nationals, residing in the U.S. or abroad, without the
prior approval of the U.S. Department of State or appropriate export
licensing authority. If you have received this communication in error,
please notify the sender by reply e-mail or collect telephone call and
delete or destroy all copies of this email message, any physical copies
made of this e-mail message and/or any file attachment(s).
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2019-10-24 7:36 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2019-10-15 13:17 LEON3 networking Joshua Shaffer
2019-10-15 16:53 ` Joshua Shaffer
2019-10-15 16:57 ` Philippe Mathieu-Daudé
2019-10-16 10:34 ` Fabien Chouteau
2019-10-23 16:59 ` Joshua Shaffer
2019-10-23 18:37 ` Jiri Gaisler
2019-10-23 19:55 ` Jiri Gaisler
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