The patch titled
iommu sg merging: PCI: add device_dma_parameters support
has been removed from the -mm tree. Its filename was
iommu-sg-merging-pci-add-device_dma_parameters-support.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: iommu sg merging: PCI: add device_dma_parameters support
From: FUJITA Tomonori <[EMAIL PROTECTED]>
This adds struct device_dma_parameters in struct pci_dev and properly
sets up a pointer in struct device.
The default max_segment_size is set to 64K, same to the block layer's
default value.
Signed-off-by: FUJITA Tomonori <[EMAIL PROTECTED]>
Mostly-acked-by: Jeff Garzik <[EMAIL PROTECTED]>
Cc: James Bottomley <[EMAIL PROTECTED]>
Acked-by: Jens Axboe <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/pci/pci.c | 8 ++++++++
drivers/pci/probe.c | 3 +++
include/linux/pci.h | 9 +++++++++
3 files changed, 20 insertions(+)
diff -puN
drivers/pci/pci.c~iommu-sg-merging-pci-add-device_dma_parameters-support
drivers/pci/pci.c
--- a/drivers/pci/pci.c~iommu-sg-merging-pci-add-device_dma_parameters-support
+++ a/drivers/pci/pci.c
@@ -1451,6 +1451,14 @@ pci_set_consistent_dma_mask(struct pci_d
}
#endif
+#ifndef HAVE_ARCH_PCI_SET_DMA_MAX_SEGMENT_SIZE
+int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size)
+{
+ return dma_set_max_seg_size(&dev->dev, size);
+}
+EXPORT_SYMBOL(pci_set_dma_max_seg_size);
+#endif
+
/**
* pcix_get_max_mmrbc - get PCI-X maximum designed memory read byte count
* @dev: PCI device to query
diff -puN
drivers/pci/probe.c~iommu-sg-merging-pci-add-device_dma_parameters-support
drivers/pci/probe.c
--- a/drivers/pci/probe.c~iommu-sg-merging-pci-add-device_dma_parameters-support
+++ a/drivers/pci/probe.c
@@ -933,8 +933,11 @@ void pci_device_add(struct pci_dev *dev,
set_dev_node(&dev->dev, pcibus_to_node(bus));
dev->dev.dma_mask = &dev->dma_mask;
+ dev->dev.dma_parms = &dev->dma_parms;
dev->dev.coherent_dma_mask = 0xffffffffull;
+ pci_set_dma_max_seg_size(dev, 65536);
+
/* Fix up broken headers */
pci_fixup_device(pci_fixup_header, dev);
diff -puN
include/linux/pci.h~iommu-sg-merging-pci-add-device_dma_parameters-support
include/linux/pci.h
--- a/include/linux/pci.h~iommu-sg-merging-pci-add-device_dma_parameters-support
+++ a/include/linux/pci.h
@@ -159,6 +159,8 @@ struct pci_dev {
this if your device has broken DMA
or supports 64-bit transfers. */
+ struct device_dma_parameters dma_parms;
+
pci_power_t current_state; /* Current operating state. In
ACPI-speak,
this is D0-D3, D0 being fully
functional,
and D3 being off. */
@@ -580,6 +582,7 @@ void pci_intx(struct pci_dev *dev, int e
void pci_msi_off(struct pci_dev *dev);
int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
+int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
int pcix_get_max_mmrbc(struct pci_dev *dev);
int pcix_get_mmrbc(struct pci_dev *dev);
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
@@ -822,6 +825,12 @@ static inline int pci_set_dma_mask(struc
return -EIO;
}
+static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
+ unsigned int size)
+{
+ return -EIO;
+}
+
static inline int pci_assign_resource(struct pci_dev *dev, int i)
{
return -EBUSY;
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
origin.patch
-
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