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-rw-r--r--arch/powerpc/include/asm/device.h2
-rw-r--r--arch/powerpc/include/asm/dma-mapping.h3
-rw-r--r--arch/powerpc/kernel/dma-iommu.c3
-rw-r--r--arch/powerpc/kernel/dma-swiotlb.c16
-rw-r--r--arch/powerpc/kernel/dma.c41
-rw-r--r--arch/powerpc/kernel/ibmebus.c8
-rw-r--r--arch/powerpc/kernel/vio.c7
-rw-r--r--arch/powerpc/platforms/cell/iommu.c13
-rw-r--r--arch/powerpc/platforms/ps3/system-bus.c7
-rw-r--r--arch/powerpc/platforms/pseries/iommu.c2
10 files changed, 68 insertions, 34 deletions
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h
index 16d25c0974be..d57c08acedfc 100644
--- a/arch/powerpc/include/asm/device.h
+++ b/arch/powerpc/include/asm/device.h
@@ -37,4 +37,6 @@ struct pdev_archdata {
u64 dma_mask;
};
+#define ARCH_HAS_DMA_GET_REQUIRED_MASK
+
#endif /* _ASM_POWERPC_DEVICE_H */
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 8135e66a4bb9..dd70fac57ec8 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -20,8 +20,6 @@
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
-#define ARCH_HAS_DMA_GET_REQUIRED_MASK
-
/* 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,
dma_addr_t *dma_handle, gfp_t flag);
@@ -71,7 +69,6 @@ static inline unsigned long device_to_mask(struct device *dev)
*/
#ifdef CONFIG_PPC64
extern struct dma_map_ops dma_iommu_ops;
-extern u64 dma_iommu_get_required_mask(struct device *dev);
#endif
extern struct dma_map_ops dma_direct_ops;
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 1f2a711a261e..c1ad9db934f6 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -90,7 +90,7 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask)
return 1;
}
-u64 dma_iommu_get_required_mask(struct device *dev)
+static u64 dma_iommu_get_required_mask(struct device *dev)
{
struct iommu_table *tbl = get_iommu_table_base(dev);
u64 mask;
@@ -111,5 +111,6 @@ struct dma_map_ops dma_iommu_ops = {
.dma_supported = dma_iommu_dma_supported,
.map_page = dma_iommu_map_page,
.unmap_page = dma_iommu_unmap_page,
+ .get_required_mask = dma_iommu_get_required_mask,
};
EXPORT_SYMBOL(dma_iommu_ops);
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 4295e0b94b2d..1ebc9189aada 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -24,6 +24,21 @@
unsigned int ppc_swiotlb_enable;
+static u64 swiotlb_powerpc_get_required(struct device *dev)
+{
+ u64 end, mask, max_direct_dma_addr = dev->archdata.max_direct_dma_addr;
+
+ end = memblock_end_of_DRAM();
+ if (max_direct_dma_addr && end > max_direct_dma_addr)
+ end = max_direct_dma_addr;
+ end += get_dma_offset(dev);
+
+ mask = 1ULL << (fls64(end) - 1);
+ mask += mask - 1;
+
+ return mask;
+}
+
/*
* At the moment, all platforms that use this code only require
* swiotlb to be used if we're operating on HIGHMEM. Since
@@ -44,6 +59,7 @@ struct dma_map_ops swiotlb_dma_ops = {
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = swiotlb_sync_sg_for_device,
.mapping_error = swiotlb_dma_mapping_error,
+ .get_required_mask = swiotlb_powerpc_get_required,
};
void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev)
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 503093efa202..10b136afbf50 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -96,6 +96,18 @@ static int dma_direct_dma_supported(struct device *dev, u64 mask)
#endif
}
+static u64 dma_direct_get_required_mask(struct device *dev)
+{
+ u64 end, mask;
+
+ end = memblock_end_of_DRAM() + get_dma_offset(dev);
+
+ mask = 1ULL << (fls64(end) - 1);
+ mask += mask - 1;
+
+ return mask;
+}
+
static inline dma_addr_t dma_direct_map_page(struct device *dev,
struct page *page,
unsigned long offset,
@@ -144,6 +156,7 @@ struct dma_map_ops dma_direct_ops = {
.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,
#ifdef CONFIG_NOT_COHERENT_CACHE
.sync_single_for_cpu = dma_direct_sync_single,
.sync_single_for_device = dma_direct_sync_single,
@@ -173,7 +186,6 @@ EXPORT_SYMBOL(dma_set_mask);
u64 dma_get_required_mask(struct device *dev)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
- u64 mask, end = 0;
if (ppc_md.dma_get_required_mask)
return ppc_md.dma_get_required_mask(dev);
@@ -181,31 +193,10 @@ u64 dma_get_required_mask(struct device *dev)
if (unlikely(dma_ops == NULL))
return 0;
-#ifdef CONFIG_PPC64
- else if (dma_ops == &dma_iommu_ops)
- return dma_iommu_get_required_mask(dev);
-#endif
-#ifdef CONFIG_SWIOTLB
- else if (dma_ops == &swiotlb_dma_ops) {
- u64 max_direct_dma_addr = dev->archdata.max_direct_dma_addr;
-
- end = memblock_end_of_DRAM();
- if (max_direct_dma_addr && end > max_direct_dma_addr)
- end = max_direct_dma_addr;
- end += get_dma_offset(dev);
- }
-#endif
- else if (dma_ops == &dma_direct_ops)
- end = memblock_end_of_DRAM() + get_dma_offset(dev);
- else {
- WARN_ONCE(1, "%s: unknown ops %p\n", __func__, dma_ops);
- end = memblock_end_of_DRAM();
- }
+ if (dma_ops->get_required_mask)
+ return dma_ops->get_required_mask(dev);
- mask = 1ULL << (fls64(end) - 1);
- mask += mask - 1;
-
- return mask;
+ return DMA_BIT_MASK(8 * sizeof(dma_addr_t));
}
EXPORT_SYMBOL_GPL(dma_get_required_mask);
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 28581f1ad2c0..90ef2a44613b 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -125,7 +125,12 @@ static void ibmebus_unmap_sg(struct device *dev,
static int ibmebus_dma_supported(struct device *dev, u64 mask)
{
- return 1;
+ return mask == DMA_BIT_MASK(64);
+}
+
+static u64 ibmebus_dma_get_required_mask(struct device *dev)
+{
+ return DMA_BIT_MASK(64);
}
static struct dma_map_ops ibmebus_dma_ops = {
@@ -134,6 +139,7 @@ static struct dma_map_ops ibmebus_dma_ops = {
.map_sg = ibmebus_map_sg,
.unmap_sg = ibmebus_unmap_sg,
.dma_supported = ibmebus_dma_supported,
+ .get_required_mask = ibmebus_dma_get_required_mask,
.map_page = ibmebus_map_page,
.unmap_page = ibmebus_unmap_page,
};
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 1b695fdc362b..c0493259d133 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -605,6 +605,11 @@ static int vio_dma_iommu_dma_supported(struct device *dev, u64 mask)
return dma_iommu_ops.dma_supported(dev, mask);
}
+static u64 vio_dma_get_required_mask(struct device *dev)
+{
+ return dma_iommu_ops.get_required_mask(dev);
+}
+
struct dma_map_ops vio_dma_mapping_ops = {
.alloc_coherent = vio_dma_iommu_alloc_coherent,
.free_coherent = vio_dma_iommu_free_coherent,
@@ -613,7 +618,7 @@ struct dma_map_ops vio_dma_mapping_ops = {
.map_page = vio_dma_iommu_map_page,
.unmap_page = vio_dma_iommu_unmap_page,
.dma_supported = vio_dma_iommu_dma_supported,
-
+ .get_required_mask = vio_dma_get_required_mask,
};
/**
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 5ef55f3b0987..fc46fcac3921 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -1161,11 +1161,20 @@ __setup("iommu_fixed=", setup_iommu_fixed);
static u64 cell_dma_get_required_mask(struct device *dev)
{
+ struct dma_map_ops *dma_ops;
+
if (!dev->dma_mask)
return 0;
- if (iommu_fixed_disabled && get_dma_ops(dev) == &dma_iommu_ops)
- return dma_iommu_get_required_mask(dev);
+ if (!iommu_fixed_disabled &&
+ cell_iommu_get_fixed_address(dev) != OF_BAD_ADDR)
+ return DMA_BIT_MASK(64);
+
+ dma_ops = get_dma_ops(dev);
+ if (dma_ops->get_required_mask)
+ return dma_ops->get_required_mask(dev);
+
+ WARN_ONCE(1, "no get_required_mask in %p ops", dma_ops);
return DMA_BIT_MASK(64);
}
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index 23083c397528..688141c76e03 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -695,12 +695,18 @@ static int ps3_dma_supported(struct device *_dev, u64 mask)
return mask >= DMA_BIT_MASK(32);
}
+static u64 ps3_dma_get_required_mask(struct device *_dev)
+{
+ return DMA_BIT_MASK(32);
+}
+
static struct dma_map_ops ps3_sb_dma_ops = {
.alloc_coherent = ps3_alloc_coherent,
.free_coherent = ps3_free_coherent,
.map_sg = ps3_sb_map_sg,
.unmap_sg = ps3_sb_unmap_sg,
.dma_supported = ps3_dma_supported,
+ .get_required_mask = ps3_dma_get_required_mask,
.map_page = ps3_sb_map_page,
.unmap_page = ps3_unmap_page,
};
@@ -711,6 +717,7 @@ static struct dma_map_ops ps3_ioc0_dma_ops = {
.map_sg = ps3_ioc0_map_sg,
.unmap_sg = ps3_ioc0_unmap_sg,
.dma_supported = ps3_dma_supported,
+ .get_required_mask = ps3_dma_get_required_mask,
.map_page = ps3_ioc0_map_page,
.unmap_page = ps3_unmap_page,
};
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index fe5ededf0d60..9f121a37eb51 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -1099,7 +1099,7 @@ static u64 dma_get_required_mask_pSeriesLP(struct device *dev)
return DMA_BIT_MASK(64);
}
- return dma_iommu_get_required_mask(dev);
+ return dma_iommu_ops.get_required_mask(dev);
}
#else /* CONFIG_PCI */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 08:50:43 +0100