For each PHB we maintain a reverse-map that can be used to find the
PE that a BDFN is currently mapped to. Add a helper for doing this
lookup so we can check if a PE has been configured without looking
at pdn->pe_number.
Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
---
arch/powerpc/platforms/powernv/pci-ioda.c | 10 ++++++++++
arch/powerpc/platforms/powernv/pci.h | 1 +
2 files changed, 11 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 8ae8836..934cbee 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -660,6 +660,16 @@ static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int
pe_no)
return state;
}
+struct pnv_ioda_pe *pnv_pci_bdfn_to_pe(struct pnv_phb *phb, u16 bdfn)
+{
+ int pe_number = phb->ioda.pe_rmap[bdfn];
+
+ if (pe_number == IODA_INVALID_PE)
+ return NULL;
+
+ return &phb->ioda.pe_array[pe_number];
+}
+
struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev)
{
struct pci_controller *hose = pci_bus_to_host(dev->bus);
diff --git a/arch/powerpc/platforms/powernv/pci.h
b/arch/powerpc/platforms/powernv/pci.h
index fc05f9b..83d40a0 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -208,6 +208,7 @@ extern int pnv_eeh_phb_reset(struct pci_controller *hose,
int option);
extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
extern void pnv_teardown_msi_irqs(struct pci_dev *pdev);
+extern struct pnv_ioda_pe *pnv_pci_bdfn_to_pe(struct pnv_phb *phb, u16 bdfn);
extern struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev);
extern void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq);
extern unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift,
--
2.9.5
