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3 Commits

Author SHA1 Message Date
Sebastien Boeuf
edd1279609 pci: Allow QWORD read and write to MSI-X table 
As mentioned in the PCI specification, MSI-X table supports both
DWORD and QWORD accesses:

For all accesses to MSI-X Table and MSI-X PBA fields, software must
use aligned full DWORD or aligned full QWORD transactions; otherwise,
the result is undefined.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
 2019-06-07 13:33:53 +01:00
Sebastien Boeuf
00cdbbc673 pci: Make MSI-X PBA read only 
Relying on the PCI specification, the Pending Bit Array is read only.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
 2019-06-07 13:33:53 +01:00
Sebastien Boeuf
4b53dc4921 pci: Add MSI-X implementation 
In order to support MSI-X, this commit adds to the pci crate a new
module called "msix". This module brings all the necessary pieces
to let any PCI device implement MSI-X support.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
 2019-06-06 15:27:35 +01:00