powerpc: Remove the main legacy iSerie platform code

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 0 insertions, 260 deletions

diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
deleted file mode 100644
index 2f3d9110248c..000000000000
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
- *
- * Rewrite, cleanup:
- *
- * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
- * Copyright (C) 2006 Olof Johansson <olof@lixom.net>
- *
- * Dynamic DMA mapping support, iSeries-specific parts.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-
-#include <asm/iommu.h>
-#include <asm/vio.h>
-#include <asm/tce.h>
-#include <asm/machdep.h>
-#include <asm/abs_addr.h>
-#include <asm/prom.h>
-#include <asm/pci-bridge.h>
-#include <asm/iseries/hv_call_xm.h>
-#include <asm/iseries/hv_call_event.h>
-#include <asm/iseries/iommu.h>
-
-static int tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
-		unsigned long uaddr, enum dma_data_direction direction,
-		struct dma_attrs *attrs)
-{
-	u64 rc;
-	u64 tce, rpn;
-
-	while (npages--) {
-		rpn = virt_to_abs(uaddr) >> TCE_SHIFT;
-		tce = (rpn & TCE_RPN_MASK) << TCE_RPN_SHIFT;
-
-		if (tbl->it_type == TCE_VB) {
-			/* Virtual Bus */
-			tce |= TCE_VALID|TCE_ALLIO;
-			if (direction != DMA_TO_DEVICE)
-				tce |= TCE_VB_WRITE;
-		} else {
-			/* PCI Bus */
-			tce |= TCE_PCI_READ; /* Read allowed */
-			if (direction != DMA_TO_DEVICE)
-				tce |= TCE_PCI_WRITE;
-		}
-
-		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, tce);
-		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
-					rc);
-		index++;
-		uaddr += TCE_PAGE_SIZE;
-	}
-	return 0;
-}
-
-static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
-{
-	u64 rc;
-
-	while (npages--) {
-		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
-		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
-					rc);
-		index++;
-	}
-}
-
-/*
- * Structure passed to HvCallXm_getTceTableParms
- */
-struct iommu_table_cb {
-	unsigned long	itc_busno;	/* Bus number for this tce table */
-	unsigned long	itc_start;	/* Will be NULL for secondary */
-	unsigned long	itc_totalsize;	/* Size (in pages) of whole table */
-	unsigned long	itc_offset;	/* Index into real tce table of the
-					   start of our section */
-	unsigned long	itc_size;	/* Size (in pages) of our section */
-	unsigned long	itc_index;	/* Index of this tce table */
-	unsigned short	itc_maxtables;	/* Max num of tables for partition */
-	unsigned char	itc_virtbus;	/* Flag to indicate virtual bus */
-	unsigned char	itc_slotno;	/* IOA Tce Slot Index */
-	unsigned char	itc_rsvd[4];
-};
-
-/*
- * Call Hv with the architected data structure to get TCE table info.
- * info. Put the returned data into the Linux representation of the
- * TCE table data.
- * The Hardware Tce table comes in three flavors.
- * 1. TCE table shared between Buses.
- * 2. TCE table per Bus.
- * 3. TCE Table per IOA.
- */
-void iommu_table_getparms_iSeries(unsigned long busno,
-				  unsigned char slotno,
-				  unsigned char virtbus,
-				  struct iommu_table* tbl)
-{
-	struct iommu_table_cb *parms;
-
-	parms = kzalloc(sizeof(*parms), GFP_KERNEL);
-	if (parms == NULL)
-		panic("PCI_DMA: TCE Table Allocation failed.");
-
-	parms->itc_busno = busno;
-	parms->itc_slotno = slotno;
-	parms->itc_virtbus = virtbus;
-
-	HvCallXm_getTceTableParms(iseries_hv_addr(parms));
-
-	if (parms->itc_size == 0)
-		panic("PCI_DMA: parms->size is zero, parms is 0x%p", parms);
-
-	/* itc_size is in pages worth of table, it_size is in # of entries */
-	tbl->it_size = (parms->itc_size * TCE_PAGE_SIZE) / TCE_ENTRY_SIZE;
-	tbl->it_busno = parms->itc_busno;
-	tbl->it_offset = parms->itc_offset;
-	tbl->it_index = parms->itc_index;
-	tbl->it_blocksize = 1;
-	tbl->it_type = virtbus ? TCE_VB : TCE_PCI;
-
-	kfree(parms);
-}
-
-
-#ifdef CONFIG_PCI
-/*
- * This function compares the known tables to find an iommu_table
- * that has already been built for hardware TCEs.
- */
-static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
-{
-	struct device_node *node;
-
-	for (node = NULL; (node = of_find_all_nodes(node)); ) {
-		struct pci_dn *pdn = PCI_DN(node);
-		struct iommu_table *it;
-
-		if (pdn == NULL)
-			continue;
-		it = pdn->iommu_table;
-		if ((it != NULL) &&
-		    (it->it_type == TCE_PCI) &&
-		    (it->it_offset == tbl->it_offset) &&
-		    (it->it_index == tbl->it_index) &&
-		    (it->it_size == tbl->it_size)) {
-			of_node_put(node);
-			return it;
-		}
-	}
-	return NULL;
-}
-
-
-static void pci_dma_dev_setup_iseries(struct pci_dev *pdev)
-{
-	struct iommu_table *tbl;
-	struct device_node *dn = pci_device_to_OF_node(pdev);
-	struct pci_dn *pdn = PCI_DN(dn);
-	const u32 *lsn = of_get_property(dn, "linux,logical-slot-number", NULL);
-
-	BUG_ON(lsn == NULL);
-
-	tbl = kzalloc(sizeof(struct iommu_table), GFP_KERNEL);
-
-	iommu_table_getparms_iSeries(pdn->busno, *lsn, 0, tbl);
-
-	/* Look for existing tce table */
-	pdn->iommu_table = iommu_table_find(tbl);
-	if (pdn->iommu_table == NULL)
-		pdn->iommu_table = iommu_init_table(tbl, -1);
-	else
-		kfree(tbl);
-	set_iommu_table_base(&pdev->dev, pdn->iommu_table);
-}
-#else
-#define pci_dma_dev_setup_iseries	NULL
-#endif
-
-static struct iommu_table veth_iommu_table;
-static struct iommu_table vio_iommu_table;
-
-void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag)
-{
-	return iommu_alloc_coherent(NULL, &vio_iommu_table, size, dma_handle,
-				DMA_BIT_MASK(32), flag, -1);
-}
-EXPORT_SYMBOL_GPL(iseries_hv_alloc);
-
-void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle)
-{
-	iommu_free_coherent(&vio_iommu_table, size, vaddr, dma_handle);
-}
-EXPORT_SYMBOL_GPL(iseries_hv_free);
-
-dma_addr_t iseries_hv_map(void *vaddr, size_t size,
-			enum dma_data_direction direction)
-{
-	return iommu_map_page(NULL, &vio_iommu_table, virt_to_page(vaddr),
-			      (unsigned long)vaddr % PAGE_SIZE, size,
-			      DMA_BIT_MASK(32), direction, NULL);
-}
-
-void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
-			enum dma_data_direction direction)
-{
-	iommu_unmap_page(&vio_iommu_table, dma_handle, size, direction, NULL);
-}
-
-void __init iommu_vio_init(void)
-{
-	iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table);
-	veth_iommu_table.it_size /= 2;
-	vio_iommu_table = veth_iommu_table;
-	vio_iommu_table.it_offset += veth_iommu_table.it_size;
-
-	if (!iommu_init_table(&veth_iommu_table, -1))
-		printk("Virtual Bus VETH TCE table failed.\n");
-	if (!iommu_init_table(&vio_iommu_table, -1))
-		printk("Virtual Bus VIO TCE table failed.\n");
-}
-
-struct iommu_table *vio_build_iommu_table_iseries(struct vio_dev *dev)
-{
-	if (strcmp(dev->type, "network") == 0)
-		return &veth_iommu_table;
-	return &vio_iommu_table;
-}
-
-void iommu_init_early_iSeries(void)
-{
-	ppc_md.tce_build = tce_build_iSeries;
-	ppc_md.tce_free  = tce_free_iSeries;
-
-	ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_iseries;
-	set_pci_dma_ops(&dma_iommu_ops);
-}