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powerpc/powernv: Introduce pnv_pci_get_slot_id()

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This introduces pnv_pci_get_slot_id() to get the hotpluggable PCI
slot ID from the corresponding device node. It will be used by
hotplug driver.

Requested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan
2016-05-20 16:41:40 +10:00
committed by Michael Ellerman
parent 9c0e1ecbe1
commit 7e19bf32c8
2 changed files with 40 additions and 0 deletions
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2
arch/powerpc/include/asm/pnv-pci.h
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@@ -17,6 +17,8 @@
#define PCI_SLOT_ID(phb_id, bdfn) \
(PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
unsigned int virq);