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drivers: pci: sandbox: Add stub sandbox PCI MPS support

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Reports the sandbox swapcase PCI Express device to support a 256 byte
Maximum Payload Size for MPS tuning tests.

Signed-off-by: Stephen Carlson <stcarlso@linux.microsoft.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Stephen Carlson 2023-03-10 11:07:14 -08:00 committed by Tom Rini
parent 59b1c9be01
commit 713db6f6d3
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/swap_case.c
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@ -165,6 +165,9 @@ static int sandbox_swap_case_read_config(const struct udevice *emul,
case PCI_CAP_ID_EXP_OFFSET + PCI_CAP_LIST_NEXT:
*valuep = PCI_CAP_ID_MSIX_OFFSET;
break;
case PCI_CAP_ID_EXP_OFFSET + PCI_EXP_DEVCAP:
*valuep = PCI_EXP_DEVCAP_PAYLOAD_256B;
break;
case PCI_CAP_ID_MSIX_OFFSET:
if (sandbox_swap_case_use_ea(emul))
*valuep = (PCI_CAP_ID_EA_OFFSET << 8) | PCI_CAP_ID_MSIX;