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s390/pci: deal with devices that have no support for MIO instructions

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Unfortunately we have to handle a class of devices that don't support the
new MIO instructions. Adjust resource assignment and mapping accordingly.

Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Sebastian Ott
2019-06-27 15:13:05 +02:00
committed by Vasily Gorbik
parent 05f31e3bf6
commit c7ff0e918a
2 changed files with 13 additions and 7 deletions
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5
arch/s390/include/asm/pci.h
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@@ -194,6 +194,11 @@ int zpci_init_iommu(struct zpci_dev *zdev);
void zpci_destroy_iommu(struct zpci_dev *zdev);
#ifdef CONFIG_PCI
static inline bool zpci_use_mio(struct zpci_dev *zdev)
{
return static_branch_likely(&have_mio) && zdev->mio_capable;
}
/* Error handling and recovery */
void zpci_event_error(void *);
void zpci_event_availability(void *);