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Split-out SID-getting code to a separate functions.

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Also ensure we are dealing with PCI-class devices.

Sponsored by:	UKRI
This commit is contained in:
Ruslan Bukin 2022-05-09 20:08:01 +01:00
parent 7b76c79b0b
commit b7fca06bbf
1 changed files with 44 additions and 13 deletions
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57
sys/arm64/iommu/smmu.c
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@ -1760,6 +1760,42 @@ smmu_set_buswide(device_t dev, struct smmu_domain *domain,
return (0);
}
#ifdef DEV_ACPI
static int
smmu_pci_get_sid_acpi(device_t child, u_int *sid0)
{
uint16_t rid;
u_int xref;
int seg;
int err;
int sid;
seg = pci_get_domain(child);
rid = pci_get_rid(child);
err = acpi_iort_map_pci_smmuv3(seg, rid, &xref, &sid);
if (err == 0)
*sid0 = sid;
return (err);
}
#endif
#ifdef FDT
static int
smmu_pci_get_sid_fdt(device_t child, u_int *sid0)
{
struct pci_id_ofw_iommu pi;
int err;
err = pci_get_id(child, PCI_ID_OFW_IOMMU, (uintptr_t *)&pi);
if (err == 0)
*sid0 = pi.id;
return (err);
}
#endif
static struct iommu_ctx *
smmu_ctx_alloc(device_t dev, struct iommu_domain *iodom, device_t child,
bool disabled)
@ -1767,28 +1803,23 @@ smmu_ctx_alloc(device_t dev, struct iommu_domain *iodom, device_t child,
struct smmu_domain *domain;
struct smmu_softc *sc;
struct smmu_ctx *ctx;
#ifdef DEV_ACPI
uint16_t rid;
u_int xref;
int seg;
#else
struct pci_id_ofw_iommu pi;
#endif
devclass_t pci_class;
u_int sid;
int err;
sc = device_get_softc(dev);
domain = (struct smmu_domain *)iodom;
pci_class = devclass_find("pci");
if (device_get_devclass(device_get_parent(child)) != pci_class)
return (NULL);
#ifdef DEV_ACPI
seg = pci_get_domain(child);
rid = pci_get_rid(child);
err = acpi_iort_map_pci_smmuv3(seg, rid, &xref, &sid);
err = smmu_pci_get_sid_acpi(child, &sid);
#else
err = pci_get_id(child, PCI_ID_OFW_IOMMU, (uintptr_t *)&pi);
sid = pi.id;
err = smmu_pci_get_sid_fdt(child, &sid);
#endif
if (err != 0)
if (err)
return (NULL);
if (sc->features & SMMU_FEATURE_2_LVL_STREAM_TABLE) {