diff options
| author | Abhishek Shah <[email protected]> | 2019-09-06 09:28:13 +0530 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2019-10-25 10:18:00 +0100 |
| commit | 9415743e4c8a029bfa46654e3a0a681a8db473f8 (patch) | |
| tree | 402208cffee2efe343dcdb5ae50b60d70dcd78bf /tools/perf/util/trace-event-scripting.c | |
| parent | 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c (diff) | |
PCI: iproc: Invalidate PAXB address mapping before programming it
Invalidate PAXB inbound/outbound address mapping on probe before
programming it.
Kernel relies on outbound/inbound windows VALID bit in OARR registers to
detect if a window was programmed and if it is set it does not overwrite
it.
This causes issues on soft reboot (eg kexec) since the host controller
does not go through a HW reset on softboot so the kernel detects valid
outbound/inbound windows configuration and is not able to reprogramme
it as expected.
Therefore, in order to make sure outbound/inbound windows are
reprogrammed on soft reboot (eg kexec), invalidate memory windows on
each probe to fix the issue.
Signed-off-by: Abhishek Shah <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Ray Jui <[email protected]>
Reviewed-by: Andrew Murray <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions