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linux: hardcode ari functions

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This commit is contained in:
Andy Nguyen
2026-04-30 22:31:03 +02:00
parent ae12c3982c
commit 639992e81d
1 changed files with 11 additions and 9 deletions
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20
linux.patch
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@@ -1021,22 +1021,24 @@ index f3fd7f39efb4..7dd1b138ae78 100644
if (amd_iommu_irq_remap) {
struct amd_iommu_pci_seg *pci_seg;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index bccc7a4bdd79..ee8e93b79e9f 100644
index bccc7a4bdd79..ed434b9650e9 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2807,7 +2807,12 @@ static int next_ari_fn(struct pci_bus *bus, struct pci_dev *dev, int fn)
@@ -2802,6 +2802,14 @@ static int next_ari_fn(struct pci_bus *bus, struct pci_dev *dev, int fn)
u16 cap = 0;
unsigned int next_fn;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI);
if (!pos)
+#ifdef CONFIG_X86_PS5
+ /* PCI config via sfc_read does not have ARI capability, so just assume fn + 1. */
+ /* ARI capability is broken, so we just assume contiguous functions until 45. */
+ if (fn < 45)
+ return fn + 1;
+#else
return -ENODEV;
+ else
+ return -ENODEV;
+#endif
+
if (!dev)
return -ENODEV;
pci_read_config_word(dev, pos + PCI_ARI_CAP, &cap);
next_fn = PCI_ARI_CAP_NFN(cap);
diff --git a/drivers/ps5/Makefile b/drivers/ps5/Makefile
new file mode 100644
index 000000000000..7acb030a4976