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powerpc: rename dma_direct_ to dma_nommu_

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We want to use the dma_direct_ namespace for a generic implementation,
so rename powerpc to the second best choice: dma_nommu_.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2017-12-22 10:58:24 +01:00
parent bf15f90b07
commit 2d9d6f6c9e
15 changed files with 68 additions and 68 deletions
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8
arch/powerpc/include/asm/dma-mapping.h
View File

@ -19,13 +19,13 @@
#include <asm/swiotlb.h>
/* Some dma direct funcs must be visible for use in other dma_ops */
extern void *__dma_direct_alloc_coherent(struct device *dev, size_t size,
extern void *__dma_nommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
unsigned long attrs);
extern void __dma_direct_free_coherent(struct device *dev, size_t size,
extern void __dma_nommu_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
unsigned long attrs);
extern int dma_direct_mmap_coherent(struct device *dev,
extern int dma_nommu_mmap_coherent(struct device *dev,
struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t handle,
size_t size, unsigned long attrs);
@ -73,7 +73,7 @@ static inline unsigned long device_to_mask(struct device *dev)
#ifdef CONFIG_PPC64
extern struct dma_map_ops dma_iommu_ops;
#endif
extern const struct dma_map_ops dma_direct_ops;
extern const struct dma_map_ops dma_nommu_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{

2
arch/powerpc/kernel/dma-iommu.c
View File

@ -114,7 +114,7 @@ int dma_iommu_mapping_error(struct device *dev, dma_addr_t dma_addr)
struct dma_map_ops dma_iommu_ops = {
.alloc = dma_iommu_alloc_coherent,
.free = dma_iommu_free_coherent,
.mmap = dma_direct_mmap_coherent,
.mmap = dma_nommu_mmap_coherent,
.map_sg = dma_iommu_map_sg,
.unmap_sg = dma_iommu_unmap_sg,
.dma_supported = dma_iommu_dma_supported,

6
arch/powerpc/kernel/dma-swiotlb.c
View File

@ -47,9 +47,9 @@ static u64 swiotlb_powerpc_get_required(struct device *dev)
* for everything else.
*/
const struct dma_map_ops swiotlb_dma_ops = {
.alloc = __dma_direct_alloc_coherent,
.free = __dma_direct_free_coherent,
.mmap = dma_direct_mmap_coherent,
.alloc = __dma_nommu_alloc_coherent,
.free = __dma_nommu_free_coherent,
.mmap = dma_nommu_mmap_coherent,
.map_sg = swiotlb_map_sg_attrs,
.unmap_sg = swiotlb_unmap_sg_attrs,
.dma_supported = swiotlb_dma_supported,

68
arch/powerpc/kernel/dma.c
View File

@ -40,7 +40,7 @@ static u64 __maybe_unused get_pfn_limit(struct device *dev)
return pfn;
}
static int dma_direct_dma_supported(struct device *dev, u64 mask)
static int dma_nommu_dma_supported(struct device *dev, u64 mask)
{
#ifdef CONFIG_PPC64
u64 limit = get_dma_offset(dev) + (memblock_end_of_DRAM() - 1);
@ -62,7 +62,7 @@ static int dma_direct_dma_supported(struct device *dev, u64 mask)
#endif
}
void *__dma_direct_alloc_coherent(struct device *dev, size_t size,
void *__dma_nommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
unsigned long attrs)
{
@ -119,7 +119,7 @@ void *__dma_direct_alloc_coherent(struct device *dev, size_t size,
#endif
}
void __dma_direct_free_coherent(struct device *dev, size_t size,
void __dma_nommu_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
unsigned long attrs)
{
@ -130,7 +130,7 @@ void __dma_direct_free_coherent(struct device *dev, size_t size,
#endif
}
static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
static void *dma_nommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
unsigned long attrs)
{
@ -139,8 +139,8 @@ static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
/* The coherent mask may be smaller than the real mask, check if
* we can really use the direct ops
*/
if (dma_direct_dma_supported(dev, dev->coherent_dma_mask))
return __dma_direct_alloc_coherent(dev, size, dma_handle,
if (dma_nommu_dma_supported(dev, dev->coherent_dma_mask))
return __dma_nommu_alloc_coherent(dev, size, dma_handle,
flag, attrs);
/* Ok we can't ... do we have an iommu ? If not, fail */
@ -154,15 +154,15 @@ static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dev_to_node(dev));
}
static void dma_direct_free_coherent(struct device *dev, size_t size,
static void dma_nommu_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
unsigned long attrs)
{
struct iommu_table *iommu;
/* See comments in dma_direct_alloc_coherent() */
if (dma_direct_dma_supported(dev, dev->coherent_dma_mask))
return __dma_direct_free_coherent(dev, size, vaddr, dma_handle,
/* See comments in dma_nommu_alloc_coherent() */
if (dma_nommu_dma_supported(dev, dev->coherent_dma_mask))
return __dma_nommu_free_coherent(dev, size, vaddr, dma_handle,
attrs);
/* Maybe we used an iommu ... */
iommu = get_iommu_table_base(dev);
@ -175,7 +175,7 @@ static void dma_direct_free_coherent(struct device *dev, size_t size,
iommu_free_coherent(iommu, size, vaddr, dma_handle);
}
int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t handle, size_t size,
unsigned long attrs)
{
@ -193,7 +193,7 @@ int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
vma->vm_page_prot);
}
static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
static int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction direction,
unsigned long attrs)
{
@ -213,13 +213,13 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
return nents;
}
static void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sg,
static void dma_nommu_unmap_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction,
unsigned long attrs)
{
}
static u64 dma_direct_get_required_mask(struct device *dev)
static u64 dma_nommu_get_required_mask(struct device *dev)
{
u64 end, mask;
@ -231,7 +231,7 @@ static u64 dma_direct_get_required_mask(struct device *dev)
return mask;
}
static inline dma_addr_t dma_direct_map_page(struct device *dev,
static inline dma_addr_t dma_nommu_map_page(struct device *dev,
struct page *page,
unsigned long offset,
size_t size,
@ -246,7 +246,7 @@ static inline dma_addr_t dma_direct_map_page(struct device *dev,
return page_to_phys(page) + offset + get_dma_offset(dev);
}
static inline void dma_direct_unmap_page(struct device *dev,
static inline void dma_nommu_unmap_page(struct device *dev,
dma_addr_t dma_address,
size_t size,
enum dma_data_direction direction,
@ -255,7 +255,7 @@ static inline void dma_direct_unmap_page(struct device *dev,
}
#ifdef CONFIG_NOT_COHERENT_CACHE
static inline void dma_direct_sync_sg(struct device *dev,
static inline void dma_nommu_sync_sg(struct device *dev,
struct scatterlist *sgl, int nents,
enum dma_data_direction direction)
{
@ -266,7 +266,7 @@ static inline void dma_direct_sync_sg(struct device *dev,
__dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
}
static inline void dma_direct_sync_single(struct device *dev,
static inline void dma_nommu_sync_single(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
@ -274,24 +274,24 @@ static inline void dma_direct_sync_single(struct device *dev,
}
#endif
const struct dma_map_ops dma_direct_ops = {
.alloc = dma_direct_alloc_coherent,
.free = dma_direct_free_coherent,
.mmap = dma_direct_mmap_coherent,
.map_sg = dma_direct_map_sg,
.unmap_sg = dma_direct_unmap_sg,
.dma_supported = dma_direct_dma_supported,
.map_page = dma_direct_map_page,
.unmap_page = dma_direct_unmap_page,
.get_required_mask = dma_direct_get_required_mask,
const struct dma_map_ops dma_nommu_ops = {
.alloc = dma_nommu_alloc_coherent,
.free = dma_nommu_free_coherent,
.mmap = dma_nommu_mmap_coherent,
.map_sg = dma_nommu_map_sg,
.unmap_sg = dma_nommu_unmap_sg,
.dma_supported = dma_nommu_dma_supported,
.map_page = dma_nommu_map_page,
.unmap_page = dma_nommu_unmap_page,
.get_required_mask = dma_nommu_get_required_mask,
#ifdef CONFIG_NOT_COHERENT_CACHE
.sync_single_for_cpu = dma_direct_sync_single,
.sync_single_for_device = dma_direct_sync_single,
.sync_sg_for_cpu = dma_direct_sync_sg,
.sync_sg_for_device = dma_direct_sync_sg,
.sync_single_for_cpu = dma_nommu_sync_single,
.sync_single_for_device = dma_nommu_sync_single,
.sync_sg_for_cpu = dma_nommu_sync_sg,
.sync_sg_for_device = dma_nommu_sync_sg,
#endif
};
EXPORT_SYMBOL(dma_direct_ops);
EXPORT_SYMBOL(dma_nommu_ops);
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
@ -302,7 +302,7 @@ int dma_set_coherent_mask(struct device *dev, u64 mask)
* is no dma_op->set_coherent_mask() so we have to do
* things the hard way:
*/
if (get_dma_ops(dev) != &dma_direct_ops ||
if (get_dma_ops(dev) != &dma_nommu_ops ||
get_iommu_table_base(dev) == NULL ||
!dma_iommu_dma_supported(dev, mask))
return -EIO;

2
arch/powerpc/kernel/pci-common.c
View File

@ -60,7 +60,7 @@ resource_size_t isa_mem_base;
EXPORT_SYMBOL(isa_mem_base);
static const struct dma_map_ops *pci_dma_ops = &dma_direct_ops;
static const struct dma_map_ops *pci_dma_ops = &dma_nommu_ops;
void set_pci_dma_ops(const struct dma_map_ops *dma_ops)
{

2
arch/powerpc/kernel/setup-common.c
View File

@ -791,7 +791,7 @@ void arch_setup_pdev_archdata(struct platform_device *pdev)
{
pdev->archdata.dma_mask = DMA_BIT_MASK(32);
pdev->dev.dma_mask = &pdev->archdata.dma_mask;
set_dma_ops(&pdev->dev, &dma_direct_ops);
set_dma_ops(&pdev->dev, &dma_nommu_ops);
}
static __init void print_system_info(void)

28
arch/powerpc/platforms/cell/iommu.c
View File

@ -541,7 +541,7 @@ static struct cbe_iommu *cell_iommu_for_node(int nid)
return NULL;
}
static unsigned long cell_dma_direct_offset;
static unsigned long cell_dma_nommu_offset;
static unsigned long dma_iommu_fixed_base;
@ -580,7 +580,7 @@ static void *dma_fixed_alloc_coherent(struct device *dev, size_t size,
device_to_mask(dev), flag,
dev_to_node(dev));
else
return dma_direct_ops.alloc(dev, size, dma_handle, flag,
return dma_nommu_ops.alloc(dev, size, dma_handle, flag,
attrs);
}
@ -592,7 +592,7 @@ static void dma_fixed_free_coherent(struct device *dev, size_t size,
iommu_free_coherent(cell_get_iommu_table(dev), size, vaddr,
dma_handle);
else
dma_direct_ops.free(dev, size, vaddr, dma_handle, attrs);
dma_nommu_ops.free(dev, size, vaddr, dma_handle, attrs);
}
static dma_addr_t dma_fixed_map_page(struct device *dev, struct page *page,
@ -601,7 +601,7 @@ static dma_addr_t dma_fixed_map_page(struct device *dev, struct page *page,
unsigned long attrs)
{
if (iommu_fixed_is_weak == (attrs & DMA_ATTR_WEAK_ORDERING))
return dma_direct_ops.map_page(dev, page, offset, size,
return dma_nommu_ops.map_page(dev, page, offset, size,
direction, attrs);
else
return iommu_map_page(dev, cell_get_iommu_table(dev), page,
@ -614,7 +614,7 @@ static void dma_fixed_unmap_page(struct device *dev, dma_addr_t dma_addr,
unsigned long attrs)
{
if (iommu_fixed_is_weak == (attrs & DMA_ATTR_WEAK_ORDERING))
dma_direct_ops.unmap_page(dev, dma_addr, size, direction,
dma_nommu_ops.unmap_page(dev, dma_addr, size, direction,
attrs);
else
iommu_unmap_page(cell_get_iommu_table(dev), dma_addr, size,
@ -626,7 +626,7 @@ static int dma_fixed_map_sg(struct device *dev, struct scatterlist *sg,
unsigned long attrs)
{
if (iommu_fixed_is_weak == (attrs & DMA_ATTR_WEAK_ORDERING))
return dma_direct_ops.map_sg(dev, sg, nents, direction, attrs);
return dma_nommu_ops.map_sg(dev, sg, nents, direction, attrs);
else
return ppc_iommu_map_sg(dev, cell_get_iommu_table(dev), sg,
nents, device_to_mask(dev),
@ -638,7 +638,7 @@ static void dma_fixed_unmap_sg(struct device *dev, struct scatterlist *sg,
unsigned long attrs)
{
if (iommu_fixed_is_weak == (attrs & DMA_ATTR_WEAK_ORDERING))
dma_direct_ops.unmap_sg(dev, sg, nents, direction, attrs);
dma_nommu_ops.unmap_sg(dev, sg, nents, direction, attrs);
else
ppc_iommu_unmap_sg(cell_get_iommu_table(dev), sg, nents,
direction, attrs);
@ -661,8 +661,8 @@ static void cell_dma_dev_setup(struct device *dev)
{
if (get_pci_dma_ops() == &dma_iommu_ops)
set_iommu_table_base(dev, cell_get_iommu_table(dev));
else if (get_pci_dma_ops() == &dma_direct_ops)
set_dma_offset(dev, cell_dma_direct_offset);
else if (get_pci_dma_ops() == &dma_nommu_ops)
set_dma_offset(dev, cell_dma_nommu_offset);
else
BUG();
}
@ -810,14 +810,14 @@ static int __init cell_iommu_init_disabled(void)
unsigned long base = 0, size;
/* When no iommu is present, we use direct DMA ops */
set_pci_dma_ops(&dma_direct_ops);
set_pci_dma_ops(&dma_nommu_ops);
/* First make sure all IOC translation is turned off */
cell_disable_iommus();
/* If we have no Axon, we set up the spider DMA magic offset */
if (of_find_node_by_name(NULL, "axon") == NULL)
cell_dma_direct_offset = SPIDER_DMA_OFFSET;
cell_dma_nommu_offset = SPIDER_DMA_OFFSET;
/* Now we need to check to see where the memory is mapped
* in PCI space. We assume that all busses use the same dma
@ -851,13 +851,13 @@ static int __init cell_iommu_init_disabled(void)
return -ENODEV;
}
cell_dma_direct_offset += base;
cell_dma_nommu_offset += base;
if (cell_dma_direct_offset != 0)
if (cell_dma_nommu_offset != 0)
cell_pci_controller_ops.dma_dev_setup = cell_pci_dma_dev_setup;
printk("iommu: disabled, direct DMA offset is 0x%lx\n",
cell_dma_direct_offset);
cell_dma_nommu_offset);
return 0;
}

2
arch/powerpc/platforms/pasemi/iommu.c
View File

@ -186,7 +186,7 @@ static void pci_dma_dev_setup_pasemi(struct pci_dev *dev)
*/
if (dev->vendor == 0x1959 && dev->device == 0xa007 &&
!firmware_has_feature(FW_FEATURE_LPAR)) {
dev->dev.dma_ops = &dma_direct_ops;
dev->dev.dma_ops = &dma_nommu_ops;
/*
* Set the coherent DMA mask to prevent the iommu
* being used unnecessarily

2
arch/powerpc/platforms/pasemi/setup.c
View File

@ -363,7 +363,7 @@ static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
return 0;
/* We use the direct ops for localbus */
dev->dma_ops = &dma_direct_ops;
dev->dma_ops = &dma_nommu_ops;
return 0;
}

4
arch/powerpc/platforms/powernv/pci-ioda.c
View File

@ -1850,7 +1850,7 @@ static int pnv_pci_ioda_dma_set_mask(struct pci_dev *pdev, u64 dma_mask)
if (bypass) {
dev_info(&pdev->dev, "Using 64-bit DMA iommu bypass\n");
set_dma_ops(&pdev->dev, &dma_direct_ops);
set_dma_ops(&pdev->dev, &dma_nommu_ops);
} else {
/*
* If the device can't set the TCE bypass bit but still wants
@ -1868,7 +1868,7 @@ static int pnv_pci_ioda_dma_set_mask(struct pci_dev *pdev, u64 dma_mask)
return rc;
/* 4GB offset bypasses 32-bit space */
set_dma_offset(&pdev->dev, (1ULL << 32));
set_dma_ops(&pdev->dev, &dma_direct_ops);
set_dma_ops(&pdev->dev, &dma_nommu_ops);
} else if (dma_mask >> 32 && dma_mask != DMA_BIT_MASK(64)) {
/*
* Fail the request if a DMA mask between 32 and 64 bits

2
arch/powerpc/platforms/pseries/iommu.c
View File

@ -1231,7 +1231,7 @@ static int dma_set_mask_pSeriesLP(struct device *dev, u64 dma_mask)
if (dma_offset != 0) {
dev_info(dev, "Using 64-bit direct DMA at offset %llx\n", dma_offset);
set_dma_offset(dev, dma_offset);
set_dma_ops(dev, &dma_direct_ops);
set_dma_ops(dev, &dma_nommu_ops);
ddw_enabled = true;
}
}

2
arch/powerpc/platforms/pseries/vio.c
View File

@ -618,7 +618,7 @@ static u64 vio_dma_get_required_mask(struct device *dev)
static const struct dma_map_ops vio_dma_mapping_ops = {
.alloc = vio_dma_iommu_alloc_coherent,
.free = vio_dma_iommu_free_coherent,
.mmap = dma_direct_mmap_coherent,
.mmap = dma_nommu_mmap_coherent,
.map_sg = vio_dma_iommu_map_sg,
.unmap_sg = vio_dma_iommu_unmap_sg,
.map_page = vio_dma_iommu_map_page,

4
arch/powerpc/sysdev/dart_iommu.c
View File

@ -402,7 +402,7 @@ static int dart_dma_set_mask(struct device *dev, u64 dma_mask)
*/
if (dart_device_on_pcie(dev) && dma_mask >= DMA_BIT_MASK(40)) {
dev_info(dev, "Using 64-bit DMA iommu bypass\n");
set_dma_ops(dev, &dma_direct_ops);
set_dma_ops(dev, &dma_nommu_ops);
} else {
dev_info(dev, "Using 32-bit DMA via iommu\n");
set_dma_ops(dev, &dma_iommu_ops);
@ -446,7 +446,7 @@ void __init iommu_init_early_dart(struct pci_controller_ops *controller_ops)
controller_ops->dma_bus_setup = NULL;
/* Setup pci_dma ops */
set_pci_dma_ops(&dma_direct_ops);
set_pci_dma_ops(&dma_nommu_ops);
}
#ifdef CONFIG_PM

2
arch/powerpc/sysdev/fsl_pci.c
View File

@ -135,7 +135,7 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
* mapping that allows addressing any RAM address from across PCI.
*/
if (dev_is_pci(dev) && dma_mask >= pci64_dma_offset * 2 - 1) {
set_dma_ops(dev, &dma_direct_ops);
set_dma_ops(dev, &dma_nommu_ops);
set_dma_offset(dev, pci64_dma_offset);
}

2
drivers/misc/cxl/vphb.c
View File

@ -54,7 +54,7 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev)
return false;
}
set_dma_ops(&dev->dev, &dma_direct_ops);
set_dma_ops(&dev->dev, &dma_nommu_ops);
set_dma_offset(&dev->dev, PAGE_OFFSET);
return _cxl_pci_associate_default_context(dev, afu);