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[0/2] PCI: endpoint: space allocation fixups

Message ID 20250328-pci-ep-size-alignment-v1-0-ee5b78b15a9a@baylibre.com (mailing list archive)
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Series PCI: endpoint: space allocation fixups | expand

Message

Jerome Brunet March 28, 2025, 2:53 p.m. UTC 
This patchset fixes problems while trying to allocate space for PCI
endpoint function.

The problems, and related fixups, have been found while trying to link two
renesas rcar-gen4 r8a779f0-spider devices with the vNTB endpoint
function. This platform has 2 configurable BAR0 and BAR2, with an alignment
of 1MB, and fairly small fixed BAR4 of 256B.

This was tested with
 * BAR0 (1MB):  CTRL+SPAD
 * BAR2 (1MB):  MW0
 * BAR4 (256B): Doorbell

This setup is currently not supported by the vNTB EP driver and requires a
small hack. I'm working on that too.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
Jerome Brunet (2):
      PCI: endpoint: strictly apply bar fixed size to allocate space
      PCI: endpoint: pci-epf-vntb: simplify ctrl/spad space allocation

 drivers/pci/endpoint/functions/pci-epf-vntb.c | 24 ++----------------------
 drivers/pci/endpoint/pci-epf-core.c           |  7 +++----
 2 files changed, 5 insertions(+), 26 deletions(-)
---
base-commit: dea140198b846f7432d78566b7b0b83979c72c2b
change-id: 20250328-pci-ep-size-alignment-9d85b28b8050

Best regards,