FSL MSI Mapping
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Thanks in advance,
Johannes
Quoted 8 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Could you provide a patchwork link to the patch you're talking about?
-Scott
Quoted 11 lines · Scott Wood
Quoted 8 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Could you provide a patchwork link to the patch you're talking about?
Unfortunately I couldn't find it in the ppc patchwork, but here are the links to the patch series in the list archives:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115484.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115485.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115486.html
Thanks,
Johannes
Quoted 11 lines · Johannes Thumshirn
Quoted 10 lines · Scott Wood
Quoted 8 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Quoted 7 lines
Quoted 1 line
Could you provide a patchwork link to the patch you're talking about?
Unfortunately I couldn't find it in the ppc patchwork, but here are the links to the patch series in the list archives:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115484.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115485.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-February/115486.html
They were in patchwork with changes requested in patch 1/2:
http://patchwork.ozlabs.org/patch/322497/
http://patchwork.ozlabs.org/patch/322334/
-Scott
Quoted 8 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Why would you not use MSI-X ?
cheers
Quoted 12 lines · Michael Ellerman
Quoted 8 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Why would you not use MSI-X ?
Simply because our hardware only supports MSI.
Quoted 7 lines · Michael Ellerman
Quoted 6 lines · Johannes Thumshirn
Hi,
I got notified about your patch to support multiple MSI Vectors on Freescale PowerPC platforms. Is there any reason why it wasn't applied until now? I couldn't find anything about it in the list archives.
Quoted 8 lines
Quoted 2 lines
I think it would be a real benefit for all to have multiple MSI vecotrs on PowerPCs.
Why would you not use MSI-X ?
cheers
Does anyone (especially the original author) have any objections if I re-spin the patch series?
Quoted 2 lines · Johannes Thumshirn
Quoted 1 line · Michael Ellerman
Why would you not use MSI-X ?
If I'm not mistaken, a PCI-E requirement is to support MSI but MSI-X is optional. And with MSI you can have multiple interrupts per single device (power of two, max 32).
Now imagine you have a FPGA with two (or more) different devices in it and you don't want them to share the IRQ line (for $reason). I bet the HW developer sees MSI and MSI-X and the former is for some reason cheaper compared to MSI-X and it fits the needs. So…
Quoted 3 lines
Does anyone (especially the original author) have any objections if I re-spin the patch series?
I didn't get around to address the review comments so it did not went in and there was no v2. Feel free re-do the series.
Sebastian