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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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38958dd911
Implement MSI support for PA Semi PWRficient platforms. MSI is done through a special range of sources on the openpic controller, and they're unfortunately breaking the usual concepts of how sources are programmed: * The source is calculated as 512 + the value written into the MSI register * The vector for this source is added to the source and reported through IACK This means that for simplicity, it makes much more sense to just set the vector to 0 for the source, since that's really the vector we expect to see from IACK. Also, the affinity/priority registers will affect 16 sources at a time. To avoid most (simple) users from being limited by this, allocate 16 sources per device but use only one. This means that there's a total of 32 sources. If we get usage scenarions that need more sources, the allocator should probably be revised to take an alignment argument and size, not just do natural alignment. Finally, since I'm already touching the MPIC names on pasemi, rename the base one from the somewhat odd " PAS-OPIC " to "PASEMI-OPIC". Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org> |
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| .. | ||
| cpufreq.c | ||
| electra_ide.c | ||
| gpio_mdio.c | ||
| idle.c | ||
| iommu.c | ||
| Kconfig | ||
| Makefile | ||
| pasemi.h | ||
| pci.c | ||
| powersave.S | ||
| setup.c | ||
| time.c | ||