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pciconf: Use VM_MEMATTR_DEVICE on supported architectures

Description

pciconf: Use VM_MEMATTR_DEVICE on supported architectures

Some architectures - armv7, armv8 and riscv use VM_MEMATTR_DEVICE
when mapping device registers in kernel. Do the same in pciconf.
On armada8k SoC all reads from BARs mapped with hitherto attribute
(VM_MEMATTR_UNCACHEABLE) return 0xff's.

Submitted by: Kornel Duleba <mindal@semihalf.com>
Reviewed by: kib
Obtained from: Semihalf
Sponsored by: Marvell
Differential revision: https://reviews.freebsd.org/D29603

Details

Provenance
mwAuthored on Apr 6 2021, 3:00 PM
Reviewer
kib
Differential Revision
D29603: pciconf: Use VM_MEMATTR_DEVICE on supported architectures
Parents
R10:57dbb3c25936: pci_dw: fix outbound I/O window configuration
Branches
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