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powerpc/powernv/sriov: Rename truncate_iov

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This prevents SR-IOV being used by making the SR-IOV BAR resources
unallocatable. Rename it to reflect what it actually does.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200722065715.1432738-7-oohall@gmail.com
This commit is contained in:
Oliver O'Halloran 2020-07-22 16:57:06 +10:00 committed by Michael Ellerman
parent ff79e11af0
commit fac248f811
1 changed files with 6 additions and 5 deletions
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11
arch/powerpc/platforms/powernv/pci-sriov.c
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@ -155,7 +155,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
iov = kzalloc(sizeof(*iov), GFP_KERNEL);
if (!iov)
goto truncate_iov;
goto disable_iov;
pdev->dev.archdata.iov_data = iov;
total_vfs = pci_sriov_get_totalvfs(pdev);
@ -169,7 +169,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
if (!pnv_pci_is_m64_flags(res->flags)) {
dev_warn(&pdev->dev, "Don't support SR-IOV with non M64 VF BAR%d: %pR. \n",
i, res);
goto truncate_iov;
goto disable_iov;
}
total_vf_bar_sz += pci_iov_resource_size(pdev,
@ -208,7 +208,8 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
* mode is 32MB.
*/
if (iov->m64_single_mode && (size < SZ_32M))
goto truncate_iov;
goto disable_iov;
dev_dbg(&pdev->dev, " Fixing VF BAR%d: %pR to\n", i, res);
res->end = res->start + size * mul - 1;
dev_dbg(&pdev->dev, " %pR\n", res);
@ -219,8 +220,8 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
return;
truncate_iov:
/* To save MMIO space, IOV BAR is truncated. */
disable_iov:
/* Save ourselves some MMIO space by disabling the unusable BARs */
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &pdev->resource[i + PCI_IOV_RESOURCES];
res->flags = 0;