powerpc/powernv/pci: Remove ioda1 support

The final "VPL" Power7 boxes that were used for powernv bringup have
been scrapped, meaning there are no machines with ioda1 left.

This patch removes the obvious unused code.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230613045202.294451-2-joel@jms.id.au

3 files changed, 2 insertions, 455 deletions

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index a02e9cdb5b5d..2c4e842c2749 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -45,10 +45,6 @@
 #include "pci.h"
 #include "../../../../drivers/pci/pci.h"
 
-#define PNV_IODA1_M64_NUM	16	/* Number of M64 BARs	*/
-#define PNV_IODA1_M64_SEGS	8	/* Segments per M64 BAR	*/
-#define PNV_IODA1_DMA32_SEGSIZE	0x10000000
-
 static const char * const pnv_phb_names[] = { "IODA1", "IODA2", "NPU_OCAPI" };
 
 static void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable);
@@ -280,86 +276,6 @@ static void pnv_ioda_reserve_dev_m64_pe(struct pci_dev *pdev,
 	}
 }
 
-static int pnv_ioda1_init_m64(struct pnv_phb *phb)
-{
-	struct resource *r;
-	int index;
-
-	/*
-	 * There are 16 M64 BARs, each of which has 8 segments. So
-	 * there are as many M64 segments as the maximum number of
-	 * PEs, which is 128.
-	 */
-	for (index = 0; index < PNV_IODA1_M64_NUM; index++) {
-		unsigned long base, segsz = phb->ioda.m64_segsize;
-		int64_t rc;
-
-		base = phb->ioda.m64_base +
-		       index * PNV_IODA1_M64_SEGS * segsz;
-		rc = opal_pci_set_phb_mem_window(phb->opal_id,
-				OPAL_M64_WINDOW_TYPE, index, base, 0,
-				PNV_IODA1_M64_SEGS * segsz);
-		if (rc != OPAL_SUCCESS) {
-			pr_warn("  Error %lld setting M64 PHB#%x-BAR#%d\n",
-				rc, phb->hose->global_number, index);
-			goto fail;
-		}
-
-		rc = opal_pci_phb_mmio_enable(phb->opal_id,
-				OPAL_M64_WINDOW_TYPE, index,
-				OPAL_ENABLE_M64_SPLIT);
-		if (rc != OPAL_SUCCESS) {
-			pr_warn("  Error %lld enabling M64 PHB#%x-BAR#%d\n",
-				rc, phb->hose->global_number, index);
-			goto fail;
-		}
-	}
-
-	for (index = 0; index < phb->ioda.total_pe_num; index++) {
-		int64_t rc;
-
-		/*
-		 * P7IOC supports M64DT, which helps mapping M64 segment
-		 * to one particular PE#. However, PHB3 has fixed mapping
-		 * between M64 segment and PE#. In order to have same logic
-		 * for P7IOC and PHB3, we enforce fixed mapping between M64
-		 * segment and PE# on P7IOC.
-		 */
-		rc = opal_pci_map_pe_mmio_window(phb->opal_id,
-				index, OPAL_M64_WINDOW_TYPE,
-				index / PNV_IODA1_M64_SEGS,
-				index % PNV_IODA1_M64_SEGS);
-		if (rc != OPAL_SUCCESS) {
-			pr_warn("%s: Error %lld mapping M64 for PHB#%x-PE#%x\n",
-				__func__, rc, phb->hose->global_number,
-				index);
-			goto fail;
-		}
-	}
-
-	/*
-	 * Exclude the segments for reserved and root bus PE, which
-	 * are first or last two PEs.
-	 */
-	r = &phb->hose->mem_resources[1];
-	if (phb->ioda.reserved_pe_idx == 0)
-		r->start += (2 * phb->ioda.m64_segsize);
-	else if (phb->ioda.reserved_pe_idx == (phb->ioda.total_pe_num - 1))
-		r->end -= (2 * phb->ioda.m64_segsize);
-	else
-		WARN(1, "Wrong reserved PE#%x on PHB#%x\n",
-		     phb->ioda.reserved_pe_idx, phb->hose->global_number);
-
-	return 0;
-
-fail:
-	for ( ; index >= 0; index--)
-		opal_pci_phb_mmio_enable(phb->opal_id,
-			OPAL_M64_WINDOW_TYPE, index, OPAL_DISABLE_M64);
-
-	return -EIO;
-}
-
 static void pnv_ioda_reserve_m64_pe(struct pci_bus *bus,
 				    unsigned long *pe_bitmap,
 				    bool all)
@@ -518,10 +434,7 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb)
 	 * Setup init functions for M64 based on IODA version, IODA3 uses
 	 * the IODA2 code.
 	 */
-	if (phb->type == PNV_PHB_IODA1)
-		phb->init_m64 = pnv_ioda1_init_m64;
-	else
-		phb->init_m64 = pnv_ioda2_init_m64;
+	phb->init_m64 = pnv_ioda2_init_m64;
 }
 
 static void pnv_ioda_freeze_pe(struct pnv_phb *phb, int pe_no)
@@ -1097,9 +1010,6 @@ static struct pnv_ioda_pe *pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all)
 	return pe;
 }
 
-static void pnv_pci_ioda1_setup_dma_pe(struct pnv_phb *phb,
-				       struct pnv_ioda_pe *pe);
-
 static void pnv_pci_ioda_dma_dev_setup(struct pci_dev *pdev)
 {
 	struct pnv_phb *phb = pci_bus_to_pnvhb(pdev->bus);
@@ -1134,9 +1044,6 @@ static void pnv_pci_ioda_dma_dev_setup(struct pci_dev *pdev)
 	 */
 	if (!pe->dma_setup_done && !pci_is_bridge(pdev)) {
 		switch (phb->type) {
-		case PNV_PHB_IODA1:
-			pnv_pci_ioda1_setup_dma_pe(phb, pe);
-			break;
 		case PNV_PHB_IODA2:
 			pnv_pci_ioda2_setup_dma_pe(phb, pe);
 			break;
@@ -1273,53 +1180,6 @@ static inline __be64 __iomem *pnv_ioda_get_inval_reg(struct pnv_phb *phb)
 	return phb->regs + 0x210;
 }
 
-static void pnv_pci_p7ioc_tce_invalidate(struct iommu_table *tbl,
-		unsigned long index, unsigned long npages)
-{
-	struct iommu_table_group_link *tgl = list_first_entry_or_null(
-			&tbl->it_group_list, struct iommu_table_group_link,
-			next);
-	struct pnv_ioda_pe *pe = container_of(tgl->table_group,
-			struct pnv_ioda_pe, table_group);
-	__be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb);
-	unsigned long start, end, inc;
-
-	start = __pa(((__be64 *)tbl->it_base) + index - tbl->it_offset);
-	end = __pa(((__be64 *)tbl->it_base) + index - tbl->it_offset +
-			npages - 1);
-
-	/* p7ioc-style invalidation, 2 TCEs per write */
-	start |= (1ull << 63);
-	end |= (1ull << 63);
-	inc = 16;
-        end |= inc - 1;	/* round up end to be different than start */
-
-        mb(); /* Ensure above stores are visible */
-        while (start <= end) {
-		__raw_writeq_be(start, invalidate);
-                start += inc;
-        }
-
-	/*
-	 * The iommu layer will do another mb() for us on build()
-	 * and we don't care on free()
-	 */
-}
-
-static int pnv_ioda1_tce_build(struct iommu_table *tbl, long index,
-		long npages, unsigned long uaddr,
-		enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	int ret = pnv_tce_build(tbl, index, npages, uaddr, direction,
-			attrs);
-
-	if (!ret)
-		pnv_pci_p7ioc_tce_invalidate(tbl, index, npages);
-
-	return ret;
-}
-
 #ifdef CONFIG_IOMMU_API
 /* Common for IODA1 and IODA2 */
 static int pnv_ioda_tce_xchg_no_kill(struct iommu_table *tbl, long index,
@@ -1329,25 +1189,6 @@ static int pnv_ioda_tce_xchg_no_kill(struct iommu_table *tbl, long index,
 }
 #endif
 
-static void pnv_ioda1_tce_free(struct iommu_table *tbl, long index,
-		long npages)
-{
-	pnv_tce_free(tbl, index, npages);
-
-	pnv_pci_p7ioc_tce_invalidate(tbl, index, npages);
-}
-
-static struct iommu_table_ops pnv_ioda1_iommu_ops = {
-	.set = pnv_ioda1_tce_build,
-#ifdef CONFIG_IOMMU_API
-	.xchg_no_kill = pnv_ioda_tce_xchg_no_kill,
-	.tce_kill = pnv_pci_p7ioc_tce_invalidate,
-	.useraddrptr = pnv_tce_useraddrptr,
-#endif
-	.clear = pnv_ioda1_tce_free,
-	.get = pnv_tce_get,
-};
-
 #define PHB3_TCE_KILL_INVAL_ALL		PPC_BIT(0)
 #define PHB3_TCE_KILL_INVAL_PE		PPC_BIT(1)
 #define PHB3_TCE_KILL_INVAL_ONE		PPC_BIT(2)
@@ -1453,182 +1294,6 @@ static struct iommu_table_ops pnv_ioda2_iommu_ops = {
 	.free = pnv_pci_ioda2_table_free_pages,
 };
 
-static int pnv_pci_ioda_dev_dma_weight(struct pci_dev *dev, void *data)
-{
-	unsigned int *weight = (unsigned int *)data;
-
-	/* This is quite simplistic. The "base" weight of a device
-	 * is 10. 0 means no DMA is to be accounted for it.
-	 */
-	if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL)
-		return 0;
-
-	if (dev->class == PCI_CLASS_SERIAL_USB_UHCI ||
-	    dev->class == PCI_CLASS_SERIAL_USB_OHCI ||
-	    dev->class == PCI_CLASS_SERIAL_USB_EHCI)
-		*weight += 3;
-	else if ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID)
-		*weight += 15;
-	else
-		*weight += 10;
-
-	return 0;
-}
-
-static unsigned int pnv_pci_ioda_pe_dma_weight(struct pnv_ioda_pe *pe)
-{
-	unsigned int weight = 0;
-
-	/* SRIOV VF has same DMA32 weight as its PF */
-#ifdef CONFIG_PCI_IOV
-	if ((pe->flags & PNV_IODA_PE_VF) && pe->parent_dev) {
-		pnv_pci_ioda_dev_dma_weight(pe->parent_dev, &weight);
-		return weight;
-	}
-#endif
-
-	if ((pe->flags & PNV_IODA_PE_DEV) && pe->pdev) {
-		pnv_pci_ioda_dev_dma_weight(pe->pdev, &weight);
-	} else if ((pe->flags & PNV_IODA_PE_BUS) && pe->pbus) {
-		struct pci_dev *pdev;
-
-		list_for_each_entry(pdev, &pe->pbus->devices, bus_list)
-			pnv_pci_ioda_dev_dma_weight(pdev, &weight);
-	} else if ((pe->flags & PNV_IODA_PE_BUS_ALL) && pe->pbus) {
-		pci_walk_bus(pe->pbus, pnv_pci_ioda_dev_dma_weight, &weight);
-	}
-
-	return weight;
-}
-
-static void pnv_pci_ioda1_setup_dma_pe(struct pnv_phb *phb,
-				       struct pnv_ioda_pe *pe)
-{
-
-	struct page *tce_mem = NULL;
-	struct iommu_table *tbl;
-	unsigned int weight, total_weight = 0;
-	unsigned int tce32_segsz, base, segs, avail, i;
-	int64_t rc;
-	void *addr;
-
-	/* XXX FIXME: Handle 64-bit only DMA devices */
-	/* XXX FIXME: Provide 64-bit DMA facilities & non-4K TCE tables etc.. */
-	/* XXX FIXME: Allocate multi-level tables on PHB3 */
-	weight = pnv_pci_ioda_pe_dma_weight(pe);
-	if (!weight)
-		return;
-
-	pci_walk_bus(phb->hose->bus, pnv_pci_ioda_dev_dma_weight,
-		     &total_weight);
-	segs = (weight * phb->ioda.dma32_count) / total_weight;
-	if (!segs)
-		segs = 1;
-
-	/*
-	 * Allocate contiguous DMA32 segments. We begin with the expected
-	 * number of segments. With one more attempt, the number of DMA32
-	 * segments to be allocated is decreased by one until one segment
-	 * is allocated successfully.
-	 */
-	do {
-		for (base = 0; base <= phb->ioda.dma32_count - segs; base++) {
-			for (avail = 0, i = base; i < base + segs; i++) {
-				if (phb->ioda.dma32_segmap[i] ==
-				    IODA_INVALID_PE)
-					avail++;
-			}
-
-			if (avail == segs)
-				goto found;
-		}
-	} while (--segs);
-
-	if (!segs) {
-		pe_warn(pe, "No available DMA32 segments\n");
-		return;
-	}
-
-found:
-	tbl = pnv_pci_table_alloc(phb->hose->node);
-	if (WARN_ON(!tbl))
-		return;
-
-#ifdef CONFIG_IOMMU_API
-	pe->table_group.ops = &spapr_tce_table_group_ops;
-	pe->table_group.pgsizes = SZ_4K;
-#endif
-	iommu_register_group(&pe->table_group, phb->hose->global_number,
-			pe->pe_number);
-	pnv_pci_link_table_and_group(phb->hose->node, 0, tbl, &pe->table_group);
-
-	/* Grab a 32-bit TCE table */
-	pe_info(pe, "DMA weight %d (%d), assigned (%d) %d DMA32 segments\n",
-		weight, total_weight, base, segs);
-	pe_info(pe, " Setting up 32-bit TCE table at %08x..%08x\n",
-		base * PNV_IODA1_DMA32_SEGSIZE,
-		(base + segs) * PNV_IODA1_DMA32_SEGSIZE - 1);
-
-	/* XXX Currently, we allocate one big contiguous table for the
-	 * TCEs. We only really need one chunk per 256M of TCE space
-	 * (ie per segment) but that's an optimization for later, it
-	 * requires some added smarts with our get/put_tce implementation
-	 *
-	 * Each TCE page is 4KB in size and each TCE entry occupies 8
-	 * bytes
-	 */
-	tce32_segsz = PNV_IODA1_DMA32_SEGSIZE >> (IOMMU_PAGE_SHIFT_4K - 3);
-	tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL,
-				   get_order(tce32_segsz * segs));
-	if (!tce_mem) {
-		pe_err(pe, " Failed to allocate a 32-bit TCE memory\n");
-		goto fail;
-	}
-	addr = page_address(tce_mem);
-	memset(addr, 0, tce32_segsz * segs);
-
-	/* Configure HW */
-	for (i = 0; i < segs; i++) {
-		rc = opal_pci_map_pe_dma_window(phb->opal_id,
-					      pe->pe_number,
-					      base + i, 1,
-					      __pa(addr) + tce32_segsz * i,
-					      tce32_segsz, IOMMU_PAGE_SIZE_4K);
-		if (rc) {
-			pe_err(pe, " Failed to configure 32-bit TCE table, err %lld\n",
-			       rc);
-			goto fail;
-		}
-	}
-
-	/* Setup DMA32 segment mapping */
-	for (i = base; i < base + segs; i++)
-		phb->ioda.dma32_segmap[i] = pe->pe_number;
-
-	/* Setup linux iommu table */
-	pnv_pci_setup_iommu_table(tbl, addr, tce32_segsz * segs,
-				  base * PNV_IODA1_DMA32_SEGSIZE,
-				  IOMMU_PAGE_SHIFT_4K);
-
-	tbl->it_ops = &pnv_ioda1_iommu_ops;
-	pe->table_group.tce32_start = tbl->it_offset << tbl->it_page_shift;
-	pe->table_group.tce32_size = tbl->it_size << tbl->it_page_shift;
-	tbl->it_index = (phb->hose->global_number << 16) | pe->pe_number;
-	if (!iommu_init_table(tbl, phb->hose->node, 0, 0))
-		panic("Failed to initialize iommu table");
-
-	pe->dma_setup_done = true;
-	return;
- fail:
-	/* XXX Failure: Try to fallback to 64-bit only ? */
-	if (tce_mem)
-		__free_pages(tce_mem, get_order(tce32_segsz * segs));
-	if (tbl) {
-		pnv_pci_unlink_table_and_group(tbl, &pe->table_group);
-		iommu_tce_table_put(tbl);
-	}
-}
-
 static long pnv_pci_ioda2_set_window(struct iommu_table_group *table_group,
 		int num, struct iommu_table *tbl)
 {
@@ -2707,57 +2372,6 @@ static bool pnv_ocapi_enable_device_hook(struct pci_dev *dev)
 	return true;
 }
 
-static long pnv_pci_ioda1_unset_window(struct iommu_table_group *table_group,
-				       int num)
-{
-	struct pnv_ioda_pe *pe = container_of(table_group,
-					      struct pnv_ioda_pe, table_group);
-	struct pnv_phb *phb = pe->phb;
-	unsigned int idx;
-	long rc;
-
-	pe_info(pe, "Removing DMA window #%d\n", num);
-	for (idx = 0; idx < phb->ioda.dma32_count; idx++) {
-		if (phb->ioda.dma32_segmap[idx] != pe->pe_number)
-			continue;
-
-		rc = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
-						idx, 0, 0ul, 0ul, 0ul);
-		if (rc != OPAL_SUCCESS) {
-			pe_warn(pe, "Failure %ld unmapping DMA32 segment#%d\n",
-				rc, idx);
-			return rc;
-		}
-
-		phb->ioda.dma32_segmap[idx] = IODA_INVALID_PE;
-	}
-
-	pnv_pci_unlink_table_and_group(table_group->tables[num], table_group);
-	return OPAL_SUCCESS;
-}
-
-static void pnv_pci_ioda1_release_pe_dma(struct pnv_ioda_pe *pe)
-{
-	struct iommu_table *tbl = pe->table_group.tables[0];
-	int64_t rc;
-
-	if (!pe->dma_setup_done)
-		return;
-
-	rc = pnv_pci_ioda1_unset_window(&pe->table_group, 0);
-	if (rc != OPAL_SUCCESS)
-		return;
-
-	pnv_pci_p7ioc_tce_invalidate(tbl, tbl->it_offset, tbl->it_size);
-	if (pe->table_group.group) {
-		iommu_group_put(pe->table_group.group);
-		WARN_ON(pe->table_group.group);
-	}
-
-	free_pages(tbl->it_base, get_order(tbl->it_size << 3));
-	iommu_tce_table_put(tbl);
-}
-
 void pnv_pci_ioda2_release_pe_dma(struct pnv_ioda_pe *pe)
 {
 	struct iommu_table *tbl = pe->table_group.tables[0];
@@ -2806,13 +2420,7 @@ static void pnv_ioda_release_pe_seg(struct pnv_ioda_pe *pe)
 {
 	struct pnv_phb *phb = pe->phb;
 
-	if (phb->type == PNV_PHB_IODA1) {
-		pnv_ioda_free_pe_seg(pe, OPAL_IO_WINDOW_TYPE,
-				     phb->ioda.io_segmap);
-		pnv_ioda_free_pe_seg(pe, OPAL_M32_WINDOW_TYPE,
-				     phb->ioda.m32_segmap);
-		/* M64 is pre-configured by pnv_ioda1_init_m64() */
-	} else if (phb->type == PNV_PHB_IODA2) {
+	if (phb->type == PNV_PHB_IODA2) {
 		pnv_ioda_free_pe_seg(pe, OPAL_M32_WINDOW_TYPE,
 				     phb->ioda.m32_segmap);
 	}
@@ -2830,9 +2438,6 @@ static void pnv_ioda_release_pe(struct pnv_ioda_pe *pe)
 	mutex_unlock(&phb->ioda.pe_list_mutex);
 
 	switch (phb->type) {
-	case PNV_PHB_IODA1:
-		pnv_pci_ioda1_release_pe_dma(pe);
-		break;
 	case PNV_PHB_IODA2:
 		pnv_pci_ioda2_release_pe_dma(pe);
 		break;
@@ -2981,7 +2586,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	struct pci_controller *hose;
 	struct pnv_phb *phb;
 	unsigned long size, m64map_off, m32map_off, pemap_off;
-	unsigned long iomap_off = 0, dma32map_off = 0;
 	struct pnv_ioda_pe *root_pe;
 	struct resource r;
 	const __be64 *prop64;
@@ -3092,10 +2696,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	phb->ioda.io_segsize = phb->ioda.io_size / phb->ioda.total_pe_num;
 	phb->ioda.io_pci_base = 0; /* XXX calculate this ? */
 
-	/* Calculate how many 32-bit TCE segments we have */
-	phb->ioda.dma32_count = phb->ioda.m32_pci_base /
-				PNV_IODA1_DMA32_SEGSIZE;
-
 	/* Allocate aux data & arrays. We don't have IO ports on PHB3 */
 	size = ALIGN(max_t(unsigned, phb->ioda.total_pe_num, 8) / 8,
 			sizeof(unsigned long));
@@ -3103,13 +2703,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	size += phb->ioda.total_pe_num * sizeof(phb->ioda.m64_segmap[0]);
 	m32map_off = size;
 	size += phb->ioda.total_pe_num * sizeof(phb->ioda.m32_segmap[0]);
-	if (phb->type == PNV_PHB_IODA1) {
-		iomap_off = size;
-		size += phb->ioda.total_pe_num * sizeof(phb->ioda.io_segmap[0]);
-		dma32map_off = size;
-		size += phb->ioda.dma32_count *
-			sizeof(phb->ioda.dma32_segmap[0]);
-	}
 	pemap_off = size;
 	size += phb->ioda.total_pe_num * sizeof(struct pnv_ioda_pe);
 	aux = kzalloc(size, GFP_KERNEL);
@@ -3123,15 +2716,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 		phb->ioda.m64_segmap[segno] = IODA_INVALID_PE;
 		phb->ioda.m32_segmap[segno] = IODA_INVALID_PE;
 	}
-	if (phb->type == PNV_PHB_IODA1) {
-		phb->ioda.io_segmap = aux + iomap_off;
-		for (segno = 0; segno < phb->ioda.total_pe_num; segno++)
-			phb->ioda.io_segmap[segno] = IODA_INVALID_PE;
-
-		phb->ioda.dma32_segmap = aux + dma32map_off;
-		for (segno = 0; segno < phb->ioda.dma32_count; segno++)
-			phb->ioda.dma32_segmap[segno] = IODA_INVALID_PE;
-	}
 	phb->ioda.pe_array = aux + pemap_off;
 
 	/*
@@ -3155,10 +2739,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	INIT_LIST_HEAD(&phb->ioda.pe_list);
 	mutex_init(&phb->ioda.pe_list_mutex);
 
-	/* Calculate how many 32-bit TCE segments we have */
-	phb->ioda.dma32_count = phb->ioda.m32_pci_base /
-				PNV_IODA1_DMA32_SEGSIZE;
-
 #if 0 /* We should really do that ... */
 	rc = opal_pci_set_phb_mem_window(opal->phb_id,
 					 window_type,
@@ -3265,27 +2845,3 @@ static void pnv_npu2_opencapi_cfg_size_fixup(struct pci_dev *dev)
 		dev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, pnv_npu2_opencapi_cfg_size_fixup);
-
-void __init pnv_pci_init_ioda_hub(struct device_node *np)
-{
-	struct device_node *phbn;
-	const __be64 *prop64;
-	u64 hub_id;
-
-	pr_info("Probing IODA IO-Hub %pOF\n", np);
-
-	prop64 = of_get_property(np, "ibm,opal-hubid", NULL);
-	if (!prop64) {
-		pr_err(" Missing \"ibm,opal-hubid\" property !\n");
-		return;
-	}
-	hub_id = be64_to_cpup(prop64);
-	pr_devel(" HUB-ID : 0x%016llx\n", hub_id);
-
-	/* Count child PHBs */
-	for_each_child_of_node(np, phbn) {
-		/* Look for IODA1 PHBs */
-		if (of_device_is_compatible(phbn, "ibm,ioda-phb"))
-			pnv_pci_init_ioda_phb(phbn, hub_id, PNV_PHB_IODA1);
-	}
-}
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 7725492097b6..35f566aa0424 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -845,11 +845,6 @@ void __init pnv_pci_init(void)
 	pcie_ports_disabled = true;
 #endif
 
-	/* Look for IODA IO-Hubs. */
-	for_each_compatible_node(np, NULL, "ibm,ioda-hub") {
-		pnv_pci_init_ioda_hub(np);
-	}
-
 	/* Look for ioda2 built-in PHB3's */
 	for_each_compatible_node(np, NULL, "ibm,ioda2-phb")
 		pnv_pci_init_ioda2_phb(np);
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index f12643958b8d..3353db882e35 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -163,10 +163,6 @@ struct pnv_phb {
 		unsigned int		*m32_segmap;
 		unsigned int		*io_segmap;
 
-		/* DMA32 segment maps - IODA1 only */
-		unsigned int		dma32_count;
-		unsigned int		*dma32_segmap;
-
 		/* IRQ chip */
 		int			irq_chip_init;
 		struct irq_chip		irq_chip;