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| author | Dan Williams <dan.j.williamps@intel.com> | 2015-11-11 16:27:33 -0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-11-16 11:29:10 -0500 |
| commit | d684a90d38e24dcaf95fdb32c83efe05f80d152a (patch) | |
| tree | 855bb8396232c9b682394125c46ada2671452bca /crypto/twofish_common.c | |
| parent | 4d92f0099a06ef0e36c7673f7c090f1a448b2d1b (diff) | |
| download | op-kernel-dev-d684a90d38e24dcaf95fdb32c83efe05f80d152a.zip op-kernel-dev-d684a90d38e24dcaf95fdb32c83efe05f80d152a.tar.gz | |
ahci: per-port msix support
Some AHCI controllers support per-port MSI-X vectors. At the same time
the Linux AHCI driver needs to support one-off architectures that
implement a single MSI-X vector for all ports. The heuristic for
enabling AHCI ports becomes, in order of preference:
1/ per-port multi-MSI-X
2/ per-port multi-MSI
3/ single MSI
4/ single MSI-X
5/ legacy INTX
This all depends on AHCI implementations with potentially broken MSI-X
requesting less vectors than the number of ports. If this assumption is
violated we will need to start explicitly white-listing AHCI-MSIX
implementations.
Reported-by: Ricardo Neri <ricardo.neri@intel.com>
[ricardo: fix struct msix_entry handling]
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'crypto/twofish_common.c')
0 files changed, 0 insertions, 0 deletions
