diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-04 14:30:02 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-04 14:30:02 +0000 |
| commit | 9d334b2855481277934921c24f1afd7d537e3eb4 (patch) | |
| tree | cf65425fcfa6a58830f0aa0517be6cb6dc2407d6 /sys/dev/pci | |
| parent | af81b7d497efd16720cc2ac3d3c2e762a68b3d38 (diff) | |
Initial support for MSI-X. Only supported on amd64 for now. I have diffs to
actually use this in em(4) and xhci(4), but I'm not committing those yet
because we almost certainly need to save and restore the MSI-X registers
during suspend/resume. However, this allows mpi@ to play with multiple-vector
support in networking hardware.
Requested by mpi@
ok mlarkin@, mikeb@
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/pcireg.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sys/dev/pci/pcireg.h b/sys/dev/pci/pcireg.h index 3f415bd2650..5278989eb8b 100644 --- a/sys/dev/pci/pcireg.h +++ b/sys/dev/pci/pcireg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pcireg.h,v 1.48 2015/06/02 15:26:19 mpi Exp $ */ +/* $OpenBSD: pcireg.h,v 1.49 2016/05/04 14:30:00 kettenis Exp $ */ /* $NetBSD: pcireg.h,v 1.26 2000/05/10 16:58:42 thorpej Exp $ */ /* @@ -594,6 +594,21 @@ typedef u_int8_t pci_revision_t; #define PCI_PCIE_LCAP2 0x2c /* + * Extended Message Signaled Interrups; access via capability pointer. + */ +#define PCI_MSIX_MC_MSIXE 0x80000000 +#define PCI_MSIX_MC_TBLSZ 0x000007ff +#define PCI_MSIX_TABLE 0x04 +#define PCI_MSIX_TABLE_BIR 0x00000007 +#define PCI_MSIX_TABLE_OFF ~(PCI_MSIX_TABLE_BIR) + +#define PCI_MSIX_MA(i) ((i) * 16 + 0) +#define PCI_MSIX_MAU32(i) ((i) * 16 + 0) +#define PCI_MSIX_MD(i) ((i) * 16 + 8) +#define PCI_MSIX_VC(i) ((i) * 16 + 12) +#define PCI_MSIX_VC_MASK 0x00000001 + +/* * Interrupt Configuration Register; contains interrupt pin and line. */ #define PCI_INTERRUPT_REG 0x3c |