Sun4d has NEVER worked properly in SMP, the 2.2.x kernels worked in UP. It has not been properly maintained for at least 5 years and there seems to be little prospect of fixing the bitrot due to a lack of interested maintainers. I had a few stabs at fixing it around 4 years ago but the problems were beyond my level of kernel competance. AFAIK nobody has touched it since, my notes are available if someone would like to try. These machines are not plentiful and are rather old so I am not holding out much hope. <B-). On Tue, 4 Dec 2007, Blue Swirl wrote:
Date: Tue, 4 Dec 2007 22:37:57 +0200 From: Blue Swirl <blauwirbel@xxxxxxxxx> To: sparclinux@xxxxxxxxxxxxxxx Subject: Sun4d interrupt handling? Hi, I'm adding Sun4d support to Qemu and I was wondering if there are any docs for Sun4d, especially interrupt handling (SBI, BW, counters, SMP issues, boards). Any pointers? Looking at Linux sources, it seems that SBI handles SBus interrupts and then BW masks all interrupt sources. Is BW CPU specific? It looks like basic hardware (CPU+MMU, zs, esp, lance, eeprom, counter) is already implemented in Qemu and IO-UNIT is not very different from IOMMU. - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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