--- v10
+++ v3
@@ -1,663 +1,141 @@
-Modern IBM POWERPC systems support multiple (currently two) TCE tables
-per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
-for TCE tables. Right now just one table is supported.
+This is a part of moving TCE table allocation into an iommu_ops
+callback to support multiple IOMMU groups per one VFIO container.
-This defines iommu_table_group struct which stores pointers to
-iommu_group and iommu_table(s). This replaces iommu_table with
-iommu_table_group where iommu_table was used to identify a group:
-- iommu_register_group();
-- iommudata of generic iommu_group;
-
-This removes @data from iommu_table as it_table_group provides
-same access to pnv_ioda_pe.
-
-For IODA, instead of embedding iommu_table, the new iommu_table_group
-keeps pointers to those. The iommu_table structs are allocated
-dynamically.
-
-For P5IOC2, both iommu_table_group and iommu_table are embedded into
-PE struct. As there is no EEH and SRIOV support for P5IOC2,
-iommu_free_table() should not be called on iommu_table struct pointers
-so we can keep it embedded in pnv_phb::p5ioc2.
-
-For pSeries, this replaces multiple calls of kzalloc_node() with a new
-iommu_pseries_alloc_group() helper and stores the table group struct
-pointer into the pci_dn struct. For release, a iommu_table_free_group()
-helper is added.
-
-This moves iommu_table struct allocation from SR-IOV code to
-the generic DMA initialization code in pnv_pci_ioda_setup_dma_pe and
-pnv_pci_ioda2_setup_dma_pe as this is where DMA is actually initialized.
-This change is here because those lines had to be changed anyway.
-
-This should cause no behavioural change.
+This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
-Changes:
-v10:
-* new to the series, separated from
-"powerpc/spapr: vfio: Switch from iommu_table to new iommu_table_group"
-* iommu_table is not embedded into iommu_table_group but allocated
-dynamically in most cases
-* iommu_table allocation is moved to a single place for IODA2's
-pnv_pci_ioda_setup_dma_pe where it belongs to
-* added list of groups into iommu_table; most of the code just looks at
-the first item to keep the patch simpler
----
- arch/powerpc/include/asm/iommu.h | 17 +++--
- arch/powerpc/include/asm/pci-bridge.h | 2 +-
- arch/powerpc/kernel/iommu.c | 17 ++---
- arch/powerpc/platforms/powernv/pci-ioda.c | 55 +++++++-------
- arch/powerpc/platforms/powernv/pci-p5ioc2.c | 18 +++--
- arch/powerpc/platforms/powernv/pci.h | 3 +-
- arch/powerpc/platforms/pseries/iommu.c | 107 +++++++++++++++++++---------
- drivers/vfio/vfio_iommu_spapr_tce.c | 23 +++---
- 8 files changed, 152 insertions(+), 90 deletions(-)
+ arch/powerpc/platforms/powernv/pci-ioda.c | 88 +++++++++++++++++++++++--------
+ 1 file changed, 65 insertions(+), 23 deletions(-)
-diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
-index e2a45c3..61bde1a 100644
---- a/arch/powerpc/include/asm/iommu.h
-+++ b/arch/powerpc/include/asm/iommu.h
-@@ -92,13 +92,10 @@ struct iommu_table {
- unsigned long *it_map; /* A simple allocation bitmap for now */
- unsigned long it_page_shift;/* table iommu page size */
- #ifdef CONFIG_IOMMU_API
-- struct iommu_group *it_group;
-+ struct iommu_table_group *it_table_group;
- #endif
- struct iommu_table_ops *it_ops;
- void (*set_bypass)(struct iommu_table *tbl, bool enable);
--#ifdef CONFIG_PPC_POWERNV
-- void *data;
--#endif
- };
-
- /* Pure 2^n version of get_order */
-@@ -130,13 +127,21 @@ extern void iommu_free_table(struct iommu_table *tbl, const char *node_name);
- extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
- int nid);
- #ifdef CONFIG_IOMMU_API
--extern void iommu_register_group(struct iommu_table *tbl,
-+
-+#define IOMMU_TABLE_GROUP_MAX_TABLES 1
-+
-+struct iommu_table_group {
-+ struct iommu_group *group;
-+ struct iommu_table *tables[IOMMU_TABLE_GROUP_MAX_TABLES];
-+};
-+
-+extern void iommu_register_group(struct iommu_table_group *table_group,
- int pci_domain_number, unsigned long pe_num);
- extern int iommu_add_device(struct device *dev);
- extern void iommu_del_device(struct device *dev);
- extern int __init tce_iommu_bus_notifier_init(void);
- #else
--static inline void iommu_register_group(struct iommu_table *tbl,
-+static inline void iommu_register_group(struct iommu_table_group *table_group,
- int pci_domain_number,
- unsigned long pe_num)
- {
-diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
-index 1811c44..e2d7479 100644
---- a/arch/powerpc/include/asm/pci-bridge.h
-+++ b/arch/powerpc/include/asm/pci-bridge.h
-@@ -185,7 +185,7 @@ struct pci_dn {
-
- struct pci_dn *parent;
- struct pci_controller *phb; /* for pci devices */
-- struct iommu_table *iommu_table; /* for phb's or bridges */
-+ struct iommu_table_group *table_group; /* for phb's or bridges */
- struct device_node *node; /* back-pointer to the device_node */
-
- int pci_ext_config_space; /* for pci devices */
-diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
-index 16be6aa..79e8b43 100644
---- a/arch/powerpc/kernel/iommu.c
-+++ b/arch/powerpc/kernel/iommu.c
-@@ -886,11 +886,12 @@ EXPORT_SYMBOL_GPL(iommu_direction_to_tce_perm);
- */
- static void group_release(void *iommu_data)
- {
-- struct iommu_table *tbl = iommu_data;
-- tbl->it_group = NULL;
-+ struct iommu_table_group *table_group = iommu_data;
-+
-+ table_group->group = NULL;
+diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
+index ebfea0a..95d9119 100644
+--- a/arch/powerpc/platforms/powernv/pci-ioda.c
++++ b/arch/powerpc/platforms/powernv/pci-ioda.c
+@@ -1295,6 +1295,62 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb,
+ __free_pages(tce_mem, get_order(TCE32_TABLE_SIZE * segs));
}
--void iommu_register_group(struct iommu_table *tbl,
-+void iommu_register_group(struct iommu_table_group *table_group,
- int pci_domain_number, unsigned long pe_num)
++static long pnv_pci_ioda2_create_table(struct pnv_ioda_pe *pe,
++ __u32 page_shift, __u32 window_shift,
++ struct iommu_table *tbl)
++{
++ int nid = pe->phb->hose->node;
++ struct page *tce_mem = NULL;
++ void *addr;
++ unsigned long tce_table_size;
++ int64_t rc;
++ unsigned order;
++
++ if ((page_shift != 12) && (page_shift != 16) && (page_shift != 24))
++ return -EINVAL;
++
++ if ((1ULL << window_shift) > memory_hotplug_max())
++ return -EINVAL;
++
++ tce_table_size = (1ULL << (window_shift - page_shift)) * 8;
++ tce_table_size = max(0x1000UL, tce_table_size);
++
++ /* Allocate TCE table */
++ order = get_order(tce_table_size);
++
++ tce_mem = alloc_pages_node(nid, GFP_KERNEL, order);
++ if (!tce_mem) {
++ pr_err("Failed to allocate a TCE memory, order=%d\n", order);
++ rc = -ENOMEM;
++ goto fail;
++ }
++ addr = page_address(tce_mem);
++ memset(addr, 0, tce_table_size);
++
++ /* Setup linux iommu table */
++ pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, 0,
++ page_shift);
++
++ tbl->it_ops = &pnv_ioda2_iommu_ops;
++ iommu_init_table(tbl, nid);
++
++ return 0;
++fail:
++ if (tce_mem)
++ __free_pages(tce_mem, get_order(tce_table_size));
++
++ return rc;
++}
++
++static void pnv_pci_ioda2_free_table(struct iommu_table *tbl)
++{
++ if (!tbl->it_size)
++ return;
++
++ free_pages(tbl->it_base, get_order(tbl->it_size << 3));
++ memset(tbl, 0, sizeof(struct iommu_table));
++}
++
+ static void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable)
{
- struct iommu_group *grp;
-@@ -902,8 +903,8 @@ void iommu_register_group(struct iommu_table *tbl,
- PTR_ERR(grp));
- return;
- }
-- tbl->it_group = grp;
-- iommu_group_set_iommudata(grp, tbl, group_release);
-+ table_group->group = grp;
-+ iommu_group_set_iommudata(grp, table_group, group_release);
- name = kasprintf(GFP_KERNEL, "domain%d-pe%lx",
- pci_domain_number, pe_num);
- if (!name)
-@@ -1091,7 +1092,7 @@ int iommu_add_device(struct device *dev)
- }
-
- tbl = get_iommu_table_base(dev);
-- if (!tbl || !tbl->it_group) {
-+ if (!tbl || !tbl->it_table_group || !tbl->it_table_group->group) {
- pr_debug("%s: Skipping device %s with no tbl\n",
- __func__, dev_name(dev));
- return 0;
-@@ -1099,7 +1100,7 @@ int iommu_add_device(struct device *dev)
-
- pr_debug("%s: Adding %s to iommu group %d\n",
- __func__, dev_name(dev),
-- iommu_group_id(tbl->it_group));
-+ iommu_group_id(tbl->it_table_group->group));
-
- if (PAGE_SIZE < IOMMU_PAGE_SIZE(tbl)) {
- pr_err("%s: Invalid IOMMU page size %lx (%lx) on %s\n",
-@@ -1108,7 +1109,7 @@ int iommu_add_device(struct device *dev)
- return -EINVAL;
- }
-
-- return iommu_group_add_device(tbl->it_group, dev);
-+ return iommu_group_add_device(tbl->it_table_group->group, dev);
- }
- EXPORT_SYMBOL_GPL(iommu_add_device);
-
-diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
-index 1b43e25..02ed448 100644
---- a/arch/powerpc/platforms/powernv/pci-ioda.c
-+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
-@@ -1087,10 +1087,6 @@ static void pnv_ioda_setup_bus_PE(struct pci_bus *bus, int all)
- return;
- }
-
-- pe->tce32_table = kzalloc_node(sizeof(struct iommu_table),
-- GFP_KERNEL, hose->node);
-- pe->tce32_table->data = pe;
--
- /* Associate it with all child devices */
- pnv_ioda_setup_same_PE(bus, pe);
-
-@@ -1292,11 +1288,12 @@ static void pnv_pci_ioda2_release_dma_pe(struct pci_dev *dev, struct pnv_ioda_pe
- struct iommu_table *tbl;
- unsigned long addr;
- int64_t rc;
-+ struct iommu_table_group *table_group;
-
- bus = dev->bus;
- hose = pci_bus_to_host(bus);
- phb = hose->private_data;
-- tbl = pe->tce32_table;
-+ tbl = pe->table_group.tables[0];
- addr = tbl->it_base;
-
- opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
-@@ -1311,13 +1308,14 @@ static void pnv_pci_ioda2_release_dma_pe(struct pci_dev *dev, struct pnv_ioda_pe
- if (rc)
- pe_warn(pe, "OPAL error %ld release DMA window\n", rc);
-
-- if (tbl->it_group) {
-- iommu_group_put(tbl->it_group);
-- BUG_ON(tbl->it_group);
-+ table_group = tbl->it_table_group;
-+ if (table_group->group) {
-+ iommu_group_put(table_group->group);
-+ BUG_ON(table_group->group);
- }
- iommu_free_table(tbl, of_node_full_name(dev->dev.of_node));
- free_pages(addr, get_order(TCE32_TABLE_SIZE));
-- pe->tce32_table = NULL;
-+ pe->table_group.tables[0] = NULL;
- }
-
- static void pnv_ioda_release_vf_PE(struct pci_dev *pdev, u16 num_vfs)
-@@ -1465,10 +1463,6 @@ static void pnv_ioda_setup_vf_PE(struct pci_dev *pdev, u16 num_vfs)
- continue;
- }
-
-- pe->tce32_table = kzalloc_node(sizeof(struct iommu_table),
-- GFP_KERNEL, hose->node);
-- pe->tce32_table->data = pe;
--
- /* Put PE to the list */
- mutex_lock(&phb->ioda.pe_list_mutex);
- list_add_tail(&pe->list, &phb->ioda.pe_list);
-@@ -1603,7 +1597,7 @@ static void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev
-
- pe = &phb->ioda.pe_array[pdn->pe_number];
- WARN_ON(get_dma_ops(&pdev->dev) != &dma_iommu_ops);
-- set_iommu_table_base(&pdev->dev, pe->tce32_table);
-+ set_iommu_table_base(&pdev->dev, pe->table_group.tables[0]);
- /*
- * Note: iommu_add_device() will fail here as
- * for physical PE: the device is already added by now;
-@@ -1636,7 +1630,7 @@ static int pnv_pci_ioda_dma_set_mask(struct pnv_phb *phb,
- } else {
- dev_info(&pdev->dev, "Using 32-bit DMA via iommu\n");
- set_dma_ops(&pdev->dev, &dma_iommu_ops);
-- set_iommu_table_base(&pdev->dev, pe->tce32_table);
-+ set_iommu_table_base(&pdev->dev, pe->table_group.tables[0]);
- }
- *pdev->dev.dma_mask = dma_mask;
- return 0;
-@@ -1670,7 +1664,7 @@ static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe,
- struct pci_dev *dev;
-
- list_for_each_entry(dev, &bus->devices, bus_list) {
-- set_iommu_table_base(&dev->dev, pe->tce32_table);
-+ set_iommu_table_base(&dev->dev, pe->table_group.tables[0]);
- iommu_add_device(&dev->dev);
-
- if (dev->subordinate)
-@@ -1681,7 +1675,8 @@ static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe,
- static void pnv_pci_ioda1_tce_invalidate(struct iommu_table *tbl,
- unsigned long index, unsigned long npages, bool rm)
+ uint16_t window_id = (pe->pe_number << 1 ) + 1;
+@@ -1365,11 +1421,9 @@ static struct powerpc_iommu_ops pnv_pci_ioda2_ops = {
+ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
+ struct pnv_ioda_pe *pe)
{
-- struct pnv_ioda_pe *pe = tbl->data;
-+ struct pnv_ioda_pe *pe = container_of(tbl->it_table_group,
-+ struct pnv_ioda_pe, table_group);
- __be64 __iomem *invalidate = rm ?
- (__be64 __iomem *)pe->tce_inval_reg_phys :
- (__be64 __iomem *)tbl->it_index;
-@@ -1758,7 +1753,8 @@ static struct iommu_table_ops pnv_ioda1_iommu_ops = {
- static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl,
- unsigned long index, unsigned long npages, bool rm)
- {
-- struct pnv_ioda_pe *pe = tbl->data;
-+ struct pnv_ioda_pe *pe = container_of(tbl->it_table_group,
-+ struct pnv_ioda_pe, table_group);
- unsigned long start, end, inc;
- __be64 __iomem *invalidate = rm ?
- (__be64 __iomem *)pe->tce_inval_reg_phys :
-@@ -1834,8 +1830,12 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb,
- if (WARN_ON(pe->tce32_seg >= 0))
- return;
-
-- tbl = pe->tce32_table;
-- iommu_register_group(tbl, phb->hose->global_number, pe->pe_number);
-+ tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-+ phb->hose->node);
-+ tbl->it_table_group = &pe->table_group;
-+ pe->table_group.tables[0] = tbl;
-+ iommu_register_group(&pe->table_group, phb->hose->global_number,
-+ pe->pe_number);
-
- /* Grab a 32-bit TCE table */
- pe->tce32_seg = base;
-@@ -1914,7 +1914,8 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb,
-
- static void pnv_pci_ioda2_set_bypass(struct iommu_table *tbl, bool enable)
- {
-- struct pnv_ioda_pe *pe = tbl->data;
-+ struct pnv_ioda_pe *pe = container_of(tbl->it_table_group,
-+ struct pnv_ioda_pe, table_group);
- uint16_t window_id = (pe->pe_number << 1 ) + 1;
+- struct page *tce_mem = NULL;
+- void *addr;
+ const __be64 *swinvp;
+- struct iommu_table *tbl;
+- unsigned int tce_table_size, end;
++ unsigned int end;
++ struct iommu_table *tbl = &pe->iommu.tables[0];
int64_t rc;
-@@ -1948,10 +1949,10 @@ static void pnv_pci_ioda2_setup_bypass_pe(struct pnv_phb *phb,
- pe->tce_bypass_base = 1ull << 59;
-
- /* Install set_bypass callback for VFIO */
-- pe->tce32_table->set_bypass = pnv_pci_ioda2_set_bypass;
-+ pe->table_group.tables[0]->set_bypass = pnv_pci_ioda2_set_bypass;
-
- /* Enable bypass by default */
-- pnv_pci_ioda2_set_bypass(pe->tce32_table, true);
-+ pnv_pci_ioda2_set_bypass(pe->table_group.tables[0], true);
- }
-
- static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
-@@ -1968,8 +1969,12 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
- if (WARN_ON(pe->tce32_seg >= 0))
- return;
-
-- tbl = pe->tce32_table;
-- iommu_register_group(tbl, phb->hose->global_number, pe->pe_number);
-+ tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-+ phb->hose->node);
-+ tbl->it_table_group = &pe->table_group;
-+ pe->table_group.tables[0] = tbl;
-+ iommu_register_group(&pe->table_group, phb->hose->global_number,
-+ pe->pe_number);
+ /* We shouldn't already have a 32-bit DMA associated */
+@@ -1378,31 +1432,20 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
/* The PE will reserve all possible 32-bits space */
pe->tce32_seg = 0;
-diff --git a/arch/powerpc/platforms/powernv/pci-p5ioc2.c b/arch/powerpc/platforms/powernv/pci-p5ioc2.c
-index 2722c1a..4ea9def 100644
---- a/arch/powerpc/platforms/powernv/pci-p5ioc2.c
-+++ b/arch/powerpc/platforms/powernv/pci-p5ioc2.c
-@@ -92,14 +92,16 @@ static struct iommu_table_ops pnv_p5ioc2_iommu_ops = {
- static void pnv_pci_p5ioc2_dma_dev_setup(struct pnv_phb *phb,
- struct pci_dev *pdev)
- {
-- if (phb->p5ioc2.iommu_table.it_map == NULL) {
-- phb->p5ioc2.iommu_table.it_ops = &pnv_p5ioc2_iommu_ops;
-- iommu_init_table(&phb->p5ioc2.iommu_table, phb->hose->node);
-- iommu_register_group(&phb->p5ioc2.iommu_table,
-+ struct iommu_table *tbl = phb->p5ioc2.table_group.tables[0];
+
-+ if (!tbl->it_map) {
-+ tbl->it_ops = &pnv_p5ioc2_iommu_ops;
-+ iommu_init_table(tbl, phb->hose->node);
-+ iommu_register_group(&phb->p5ioc2.table_group,
- pci_domain_nr(phb->hose->bus), phb->opal_id);
+ end = (1 << ilog2(phb->ioda.m32_pci_base));
+- tce_table_size = (end / 0x1000) * 8;
+ pe_info(pe, "Setting up 32-bit TCE table at 0..%08x\n",
+ end);
+
+- /* Allocate TCE table */
+- tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL,
+- get_order(tce_table_size));
+- if (!tce_mem) {
+- pe_err(pe, "Failed to allocate a 32-bit TCE memory\n");
+- goto fail;
++ rc = pnv_pci_ioda2_create_table(pe, IOMMU_PAGE_SHIFT_4K,
++ ilog2(phb->ioda.m32_pci_base), tbl);
++ if (rc) {
++ pe_err(pe, "Failed to create 32-bit TCE table, err %ld", rc);
++ return;
}
+- addr = page_address(tce_mem);
+- memset(addr, 0, tce_table_size);
-- set_iommu_table_base(&pdev->dev, &phb->p5ioc2.iommu_table);
-+ set_iommu_table_base(&pdev->dev, tbl);
- iommu_add_device(&pdev->dev);
+ /* Setup iommu */
+ pe->iommu.tables[0].it_iommu = &pe->iommu;
+-
+- /* Setup linux iommu table */
+- tbl = &pe->iommu.tables[0];
+- pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, 0,
+- IOMMU_PAGE_SHIFT_4K);
+-
+- tbl->it_ops = &pnv_ioda2_iommu_ops;
+- iommu_init_table(tbl, phb->hose->node);
+ pe->iommu.ops = &pnv_pci_ioda2_ops;
+
+ /*
+@@ -1447,8 +1490,7 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
+ fail:
+ if (pe->tce32_seg >= 0)
+ pe->tce32_seg = -1;
+- if (tce_mem)
+- __free_pages(tce_mem, get_order(tce_table_size));
++ pnv_pci_ioda2_free_table(tbl);
}
-@@ -180,6 +182,12 @@ static void __init pnv_pci_init_p5ioc2_phb(struct device_node *np, u64 hub_id,
- pnv_pci_setup_iommu_table(&phb->p5ioc2.iommu_table,
- tce_mem, tce_size, 0,
- IOMMU_PAGE_SHIFT_4K);
-+ /*
-+ * We do not allocate iommu_table as we do not support
-+ * hotplug or SRIOV on P5IOC2 and therefore iommu_free_table()
-+ * should not be called for phb->p5ioc2.table_group.tables[0] ever.
-+ */
-+ phb->p5ioc2.table_group.tables[0] = &phb->p5ioc2.iommu_table;
- }
-
- void __init pnv_pci_init_p5ioc2_hub(struct device_node *np)
-diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
-index ec26afd..720cc99 100644
---- a/arch/powerpc/platforms/powernv/pci.h
-+++ b/arch/powerpc/platforms/powernv/pci.h
-@@ -57,7 +57,7 @@ struct pnv_ioda_pe {
- /* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */
- int tce32_seg;
- int tce32_segcount;
-- struct iommu_table *tce32_table;
-+ struct iommu_table_group table_group;
- phys_addr_t tce_inval_reg_phys;
-
- /* 64-bit TCE bypass region */
-@@ -123,6 +123,7 @@ struct pnv_phb {
- union {
- struct {
- struct iommu_table iommu_table;
-+ struct iommu_table_group table_group;
- } p5ioc2;
-
- struct {
-diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
-index 4f2ab90..ad5ac6d 100644
---- a/arch/powerpc/platforms/pseries/iommu.c
-+++ b/arch/powerpc/platforms/pseries/iommu.c
-@@ -52,14 +52,49 @@
-
- #include "pseries.h"
-
--static void iommu_pseries_free_table(struct iommu_table *tbl,
-+static struct iommu_table_group *iommu_pseries_alloc_group(int node)
-+{
-+ struct iommu_table_group *table_group = NULL;
-+ struct iommu_table *tbl = NULL;
-+
-+ table_group = kzalloc_node(sizeof(struct iommu_table_group), GFP_KERNEL,
-+ node);
-+ if (!table_group)
-+ goto fail_exit;
-+
-+ tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, node);
-+ if (!tbl)
-+ goto fail_exit;
-+
-+ tbl->it_table_group = table_group;
-+ table_group->tables[0] = tbl;
-+
-+ return table_group;
-+
-+fail_exit:
-+ kfree(table_group);
-+ kfree(tbl);
-+
-+ return NULL;
-+}
-+
-+static void iommu_pseries_free_group(struct iommu_table_group *table_group,
- const char *node_name)
- {
-- if (tbl->it_group) {
-- iommu_group_put(tbl->it_group);
-- BUG_ON(tbl->it_group);
-+ struct iommu_table *tbl;
-+
-+ if (!table_group)
-+ return;
-+
-+ if (table_group->group) {
-+ iommu_group_put(table_group->group);
-+ BUG_ON(table_group->group);
- }
-+
-+ tbl = table_group->tables[0];
- iommu_free_table(tbl, node_name);
-+
-+ kfree(table_group);
- }
-
- static void tce_invalidate_pSeries_sw(struct iommu_table *tbl,
-@@ -629,13 +664,13 @@ static void pci_dma_bus_setup_pSeries(struct pci_bus *bus)
- pci->phb->dma_window_size = 0x8000000ul;
- pci->phb->dma_window_base_cur = 0x8000000ul;
-
-- tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-- pci->phb->node);
-+ pci->table_group = iommu_pseries_alloc_group(pci->phb->node);
-+ tbl = pci->table_group->tables[0];
-
- iommu_table_setparms(pci->phb, dn, tbl);
- tbl->it_ops = &iommu_table_pseries_ops;
-- pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
-- iommu_register_group(tbl, pci_domain_nr(bus), 0);
-+ iommu_init_table(tbl, pci->phb->node);
-+ iommu_register_group(pci->table_group, pci_domain_nr(bus), 0);
-
- /* Divide the rest (1.75GB) among the children */
- pci->phb->dma_window_size = 0x80000000ul;
-@@ -678,16 +713,17 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus)
- ppci = PCI_DN(pdn);
-
- pr_debug(" parent is %s, iommu_table: 0x%p\n",
-- pdn->full_name, ppci->iommu_table);
-+ pdn->full_name, ppci->table_group);
-
-- if (!ppci->iommu_table) {
-- tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-- ppci->phb->node);
-+ if (!ppci->table_group) {
-+ ppci->table_group = iommu_pseries_alloc_group(ppci->phb->node);
-+ tbl = ppci->table_group->tables[0];
- iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
- tbl->it_ops = &iommu_table_lpar_multi_ops;
-- ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node);
-- iommu_register_group(tbl, pci_domain_nr(bus), 0);
-- pr_debug(" created table: %p\n", ppci->iommu_table);
-+ iommu_init_table(tbl, ppci->phb->node);
-+ iommu_register_group(ppci->table_group,
-+ pci_domain_nr(bus), 0);
-+ pr_debug(" created table: %p\n", ppci->table_group);
- }
- }
-
-@@ -709,12 +745,13 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
- struct pci_controller *phb = PCI_DN(dn)->phb;
-
- pr_debug(" --> first child, no bridge. Allocating iommu table.\n");
-- tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-- phb->node);
-+ PCI_DN(dn)->table_group = iommu_pseries_alloc_group(phb->node);
-+ tbl = PCI_DN(dn)->table_group->tables[0];
- iommu_table_setparms(phb, dn, tbl);
- tbl->it_ops = &iommu_table_pseries_ops;
-- PCI_DN(dn)->iommu_table = iommu_init_table(tbl, phb->node);
-- iommu_register_group(tbl, pci_domain_nr(phb->bus), 0);
-+ iommu_init_table(tbl, phb->node);
-+ iommu_register_group(PCI_DN(dn)->table_group,
-+ pci_domain_nr(phb->bus), 0);
- set_iommu_table_base(&dev->dev, tbl);
- iommu_add_device(&dev->dev);
- return;
-@@ -724,11 +761,12 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
- * an already allocated iommu table is found and use that.
- */
-
-- while (dn && PCI_DN(dn) && PCI_DN(dn)->iommu_table == NULL)
-+ while (dn && PCI_DN(dn) && PCI_DN(dn)->table_group == NULL)
- dn = dn->parent;
-
- if (dn && PCI_DN(dn)) {
-- set_iommu_table_base(&dev->dev, PCI_DN(dn)->iommu_table);
-+ set_iommu_table_base(&dev->dev,
-+ PCI_DN(dn)->table_group->tables[0]);
- iommu_add_device(&dev->dev);
- } else
- printk(KERN_WARNING "iommu: Device %s has no iommu table\n",
-@@ -1115,7 +1153,7 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
- dn = pci_device_to_OF_node(dev);
- pr_debug(" node is %s\n", dn->full_name);
-
-- for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table;
-+ for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->table_group;
- pdn = pdn->parent) {
- dma_window = of_get_property(pdn, "ibm,dma-window", NULL);
- if (dma_window)
-@@ -1131,19 +1169,20 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
- pr_debug(" parent is %s\n", pdn->full_name);
-
- pci = PCI_DN(pdn);
-- if (!pci->iommu_table) {
-- tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
-- pci->phb->node);
-+ if (!pci->table_group) {
-+ pci->table_group = iommu_pseries_alloc_group(pci->phb->node);
-+ tbl = pci->table_group->tables[0];
- iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
- tbl->it_ops = &iommu_table_lpar_multi_ops;
-- pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
-- iommu_register_group(tbl, pci_domain_nr(pci->phb->bus), 0);
-- pr_debug(" created table: %p\n", pci->iommu_table);
-+ iommu_init_table(tbl, pci->phb->node);
-+ iommu_register_group(pci->table_group,
-+ pci_domain_nr(pci->phb->bus), 0);
-+ pr_debug(" created table: %p\n", pci->table_group);
- } else {
-- pr_debug(" found DMA window, table: %p\n", pci->iommu_table);
-+ pr_debug(" found DMA window, table: %p\n", pci->table_group);
- }
-
-- set_iommu_table_base(&dev->dev, pci->iommu_table);
-+ set_iommu_table_base(&dev->dev, pci->table_group->tables[0]);
- iommu_add_device(&dev->dev);
- }
-
-@@ -1174,7 +1213,7 @@ static int dma_set_mask_pSeriesLP(struct device *dev, u64 dma_mask)
- * search upwards in the tree until we either hit a dma-window
- * property, OR find a parent with a table already allocated.
- */
-- for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table;
-+ for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->table_group;
- pdn = pdn->parent) {
- dma_window = of_get_property(pdn, "ibm,dma-window", NULL);
- if (dma_window)
-@@ -1218,7 +1257,7 @@ static u64 dma_get_required_mask_pSeriesLP(struct device *dev)
- dn = pci_device_to_OF_node(pdev);
-
- /* search upwards for ibm,dma-window */
-- for (; dn && PCI_DN(dn) && !PCI_DN(dn)->iommu_table;
-+ for (; dn && PCI_DN(dn) && !PCI_DN(dn)->table_group;
- dn = dn->parent)
- if (of_get_property(dn, "ibm,dma-window", NULL))
- break;
-@@ -1298,8 +1337,8 @@ static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long acti
- * the device node.
- */
- remove_ddw(np, false);
-- if (pci && pci->iommu_table)
-- iommu_pseries_free_table(pci->iommu_table,
-+ if (pci && pci->table_group)
-+ iommu_pseries_free_group(pci->table_group,
- np->full_name);
-
- spin_lock(&direct_window_list_lock);
-diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
-index 0fbe03e..bd87e46 100644
---- a/drivers/vfio/vfio_iommu_spapr_tce.c
-+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
-@@ -190,10 +190,11 @@ static void tce_iommu_release(void *iommu_data)
- {
- struct tce_container *container = iommu_data;
-
-- WARN_ON(container->tbl && !container->tbl->it_group);
-+ WARN_ON(container->tbl && !container->tbl->it_table_group->group);
-
-- if (container->tbl && container->tbl->it_group)
-- tce_iommu_detach_group(iommu_data, container->tbl->it_group);
-+ if (container->tbl && container->tbl->it_table_group->group)
-+ tce_iommu_detach_group(iommu_data,
-+ container->tbl->it_table_group->group);
-
- tce_iommu_disable(container);
- mutex_destroy(&container->lock);
-@@ -345,7 +346,7 @@ static long tce_iommu_ioctl(void *iommu_data,
- if (!tbl)
- return -ENXIO;
-
-- BUG_ON(!tbl->it_group);
-+ BUG_ON(!tbl->it_table_group->group);
-
- minsz = offsetofend(struct vfio_iommu_type1_dma_map, size);
-
-@@ -433,11 +434,12 @@ static long tce_iommu_ioctl(void *iommu_data,
- mutex_unlock(&container->lock);
- return 0;
- case VFIO_EEH_PE_OP:
-- if (!container->tbl || !container->tbl->it_group)
-+ if (!container->tbl || !container->tbl->it_table_group->group)
- return -ENODEV;
-
-- return vfio_spapr_iommu_eeh_ioctl(container->tbl->it_group,
-- cmd, arg);
-+ return vfio_spapr_iommu_eeh_ioctl(
-+ container->tbl->it_table_group->group,
-+ cmd, arg);
- }
-
- return -ENOTTY;
-@@ -457,7 +459,8 @@ static int tce_iommu_attach_group(void *iommu_data,
- iommu_group_id(iommu_group), iommu_group); */
- if (container->tbl) {
- pr_warn("tce_vfio: Only one group per IOMMU container is allowed, existing id=%d, attaching id=%d\n",
-- iommu_group_id(container->tbl->it_group),
-+ iommu_group_id(container->tbl->
-+ it_table_group->group),
- iommu_group_id(iommu_group));
- ret = -EBUSY;
- goto unlock_exit;
-@@ -491,13 +494,13 @@ static void tce_iommu_detach_group(void *iommu_data,
- if (tbl != container->tbl) {
- pr_warn("tce_vfio: detaching group #%u, expected group is #%u\n",
- iommu_group_id(iommu_group),
-- iommu_group_id(tbl->it_group));
-+ iommu_group_id(tbl->it_table_group->group));
- goto unlock_exit;
- }
-
- if (container->enabled) {
- pr_warn("tce_vfio: detaching group #%u from enabled container, forcing disable\n",
-- iommu_group_id(tbl->it_group));
-+ iommu_group_id(tbl->it_table_group->group));
- tce_iommu_disable(container);
- }
-
+ static void pnv_ioda_setup_dma(struct pnv_phb *phb)
--
-2.4.0.rc3.8.gfb3e7d5
+2.0.0