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| author | Alistair Popple <alistair@popple.id.au> | 2014-03-06 07:52:28 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-05-01 02:26:30 +0400 |
| commit | e2c37d908336dc27c8b405f063c2a163124947fa (patch) | |
| tree | 2a5582122d13305abcd4558ed6810329369ea211 /arch/powerpc/sysdev/Kconfig | |
| parent | 2a2c74b2efcb1a0ca3fdcb5fbb96ad8de6a29177 (diff) | |
| download | linux-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>
Diffstat (limited to 'arch/powerpc/sysdev/Kconfig')
| -rw-r--r-- | arch/powerpc/sysdev/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/Kconfig b/arch/powerpc/sysdev/Kconfig index 7baa70d6dc01..a19332a38715 100644 --- a/arch/powerpc/sysdev/Kconfig +++ b/arch/powerpc/sysdev/Kconfig @@ -7,6 +7,12 @@ config PPC4xx_PCI_EXPRESS depends on PCI && 4xx default n +config PPC4xx_HSTA_MSI + bool + depends on PCI_MSI + depends on PCI && 4xx + default n + config PPC4xx_MSI bool depends on PCI_MSI |