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| author |   Pierre Morel <pmorel@linux.ibm.com> | 2020-02-07 13:35:08 +0100 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-04-28 13:49:46 +0200 |
| commit | 6cf17f9a67c124aa4739b79709008d942635b975 (patch) | |
| tree | ab46189764d49c95d1da78323df1a273d0e8b13f /arch/s390/include/asm/pci.h | |
| parent | s390/pci: adaptation of iommu to multifunction (diff) | |
| download | linux-dev-6cf17f9a67c124aa4739b79709008d942635b975.tar.xz linux-dev-6cf17f9a67c124aa4739b79709008d942635b975.zip | |
s390/pci: define kernel parameters for PCI multifunction
Using PCI multifunctions in S390 is a new feature we may want
to ignore to continue provide the same topology as in the past
to userland even if the configuration supports exposing the
topology of a multi-Function device.
A new boolean parameters allows to overwrite the kernel
pci configuration:
- pci=norid when on, disallow the use a new firmware field,
RID, which provides the PCI <bus>:<device>.<function> part
of the PCI address.
To be used in the following patches and satisfy the checkpatch.pl
the variable is exposed in pci.h
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pci.h')
| -rw-r--r-- | arch/s390/include/asm/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 0e519197ea2d..ec28bbc2d3d1 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -168,6 +168,7 @@ static inline bool zdev_enabled(struct zpci_dev *zdev) extern const struct attribute_group *zpci_attr_groups[]; extern unsigned int s390_pci_force_floating __initdata; +extern unsigned int s390_pci_no_rid; /* ----------------------------------------------------------------------------- Prototypes |