powerpc/powernv: remove the nvlink support

This code was only used by the vfio-nvlink2 code, which itself had no
proper use.  Drop this huge chunk of code build into every powernv
or generic build.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Christoph Hellwig

arch/powerpc/include/asm/opal.h

@@ -28,9 +28,6 @@ extern struct device_node *opal_node;
 
 /* API functions */
 int64_t opal_invalid_call(void);
-int64_t opal_npu_destroy_context(uint64_t phb_id, uint64_t pid, uint64_t bdf);
-int64_t opal_npu_init_context(uint64_t phb_id, int pasid, uint64_t msr,
-			uint64_t bdf);
 int64_t opal_npu_map_lpar(uint64_t phb_id, uint64_t bdf, uint64_t lparid,
 			uint64_t lpcr);
 int64_t opal_npu_spa_setup(uint64_t phb_id, uint32_t bdfn,

arch/powerpc/include/asm/pci-bridge.h

@@ -126,7 +126,6 @@ struct pci_controller {
 #endif	/* CONFIG_PPC64 */
 
 	void *private_data;
-	struct npu *npu;
 };
 
 /* These are used for config access before all the PCI probing

arch/powerpc/include/asm/pci.h

@@ -119,11 +119,4 @@ extern void pcibios_scan_phb(struct pci_controller *hose);
 
 #endif	/* __KERNEL__ */
 
-extern struct pci_dev *pnv_pci_get_gpu_dev(struct pci_dev *npdev);
-extern struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index);
-extern int pnv_npu2_init(struct pci_controller *hose);
-extern int pnv_npu2_map_lpar_dev(struct pci_dev *gpdev, unsigned int lparid,
-		unsigned long msr);
-extern int pnv_npu2_unmap_lpar_dev(struct pci_dev *gpdev);
-
 #endif /* __ASM_POWERPC_PCI_H */

arch/powerpc/platforms/powernv/Makefile

@@ -10,7 +10,7 @@ obj-$(CONFIG_SMP)	+= smp.o subcore.o subcore-asm.o
 obj-$(CONFIG_FA_DUMP)	+= opal-fadump.o
 obj-$(CONFIG_PRESERVE_FA_DUMP)	+= opal-fadump.o
 obj-$(CONFIG_OPAL_CORE)	+= opal-core.o
-obj-$(CONFIG_PCI)	+= pci.o pci-ioda.o npu-dma.o pci-ioda-tce.o
+obj-$(CONFIG_PCI)	+= pci.o pci-ioda.o pci-ioda-tce.o
 obj-$(CONFIG_PCI_IOV)   += pci-sriov.o
 obj-$(CONFIG_CXL_BASE)	+= pci-cxl.o
 obj-$(CONFIG_EEH)	+= eeh-powernv.o