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| author | Yazen Ghannam <Yazen.Ghannam@amd.com> | 2016-11-11 00:10:56 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-11-16 22:46:38 +0300 |
| commit | ddfe43cdc0da3189feac4bb9f0f818bef6d6e56e (patch) | |
| tree | 1f356fa7ee90d0a4eee3e380a1bb031dccb3396c /Documentation | |
| parent | b791c6b6a55c402367cc544f54921074253db061 (diff) | |
| download | linux-ddfe43cdc0da3189feac4bb9f0f818bef6d6e56e.tar.xz | |
x86/amd_nb: Add SMN and Indirect Data Fabric access for AMD Fam17h
Some devices on Fam17h can only be accessed through the System Management
Network (SMN). The SMN is accessed by a pair of index/data registers in PCI
config space. Add a pair of functions to read from and write to the SMN.
The Data Fabric on Fam17h allows multiple devices to use the same register
space. The registers of a specific device are accessed indirectly using the
device's DF InstanceId. Currently, we only need to read from these devices,
so only define a read function for now.
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/1478812257-5424-5-git-send-email-Yazen.Ghannam@amd.com
[ Boris: make __amd_smn_rw() even more compact. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions