// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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, pSeries-specific parts, both SMP and LPAR.
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/crash_dump.h>
#include <linux/memory.h>
#include <linux/of.h>
#include <linux/iommu.h>
#include <linux/rculist.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/iommu.h>
#include <asm/pci-bridge.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/tce.h>
#include <asm/ppc-pci.h>
#include <asm/udbg.h>
#include <asm/mmzone.h>
#include <asm/plpar_wrappers.h>
#include "pseries.h"
static struct iommu_table_group *iommu_pseries_alloc_group(int node)
{
struct iommu_table_group *table_group;
struct iommu_table *tbl;
table_group = kzalloc_node(sizeof(struct iommu_table_group), GFP_KERNEL,
node);
if (!table_group)
return NULL;
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, node);
if (!tbl)
goto free_group;
INIT_LIST_HEAD_RCU(&tbl->it_group_list);
kref_init(&tbl->it_kref);
table_group->tables[0] = tbl;
return table_group;
free_group:
kfree(table_group);
return NULL;
}
static void iommu_pseries_free_group(struct iommu_table_group *table_group,
const char *node_name)
{
struct iommu_table *tbl;
if (!table_group)
return;
tbl = table_group->tables[0];
#ifdef CONFIG_IOMMU_API
if (table_group