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authorAlistair Popple <alistair@popple.id.au>2014-03-06 07:52:28 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-05-01 02:26:30 +0400
commite2c37d908336dc27c8b405f063c2a163124947fa (patch)
tree2a5582122d13305abcd4558ed6810329369ea211 /Documentation/laptops
parent2a2c74b2efcb1a0ca3fdcb5fbb96ad8de6a29177 (diff)
downloadlinux-e2c37d908336dc27c8b405f063c2a163124947fa.tar.xz
powerpc: Added PCI MSI support using the HSTA module
The PPC476GTR SoC supports message signalled interrupts (MSI) by writing to special addresses within the High Speed Transfer Assist (HSTA) module. This patch adds support for PCI MSI with a new system device. The DMA window is also updated to allow access to the entire 42-bit address range to allow PCI devices write access to the HSTA module. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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