You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

FUJITA Tomonori 8d8bb39b9e dma-mapping: add the device argument to dma_mapping_error() ... Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		17 years ago
..
Kconfig	sfc: Use kernel I2C system and i2c-algo-bit driver	17 years ago
Makefile	sfc: Use kernel I2C system and i2c-algo-bit driver	17 years ago
bitfield.h	sfc: Use DMA_BIT_MASK() instead of our own DMA mask macros	17 years ago
boards.c	sfc: Use kernel I2C system and i2c-algo-bit driver	17 years ago
boards.h	sfc: Use kernel I2C system and i2c-algo-bit driver	17 years ago
efx.c	sfc: Create one RX queue and interrupt per CPU package by default	17 years ago
efx.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
enum.h	[netdrvr] sfc: sfc: Add self-test support	17 years ago
ethtool.c	[netdrvr] sfc: sfc: Add self-test support	17 years ago
ethtool.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
falcon.c	sfc: I2C adapter initialisation fixes	17 years ago
falcon.h	sfc: Replaced various macros with inline functions	17 years ago
falcon_hwdefs.h	sfc: Use __packed macro	17 years ago
falcon_io.h	sfc: Replaced various macros with inline functions	17 years ago
falcon_xmac.c	[netdrvr] sfc: Report XAUI link down at default log level	17 years ago
gmii.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
mac.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
mdio_10g.c	[netdrvr] sfc: sfc: Add self-test support	17 years ago
mdio_10g.h	[netdrvr] sfc: sfc: Add self-test support	17 years ago
net_driver.h	sfc: Use a separate workqueue for resets	17 years ago
phy.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
rx.c	dma-mapping: add the device argument to dma_mapping_error()	17 years ago
rx.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
selftest.c	sfc: Added checks for heap allocation failure	17 years ago
selftest.h	[netdrvr] sfc: sfc: Add self-test support	17 years ago
sfe4001.c	sfc: Use kernel I2C system and i2c-algo-bit driver	17 years ago
spi.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
tenxpress.c	sfc: Added checks for heap allocation failure	17 years ago
tx.c	dma-mapping: add the device argument to dma_mapping_error()	17 years ago
tx.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
workarounds.h	sfc: Replaced various macros with inline functions	17 years ago
xenpack.h	New driver "sfc" for Solarstorm SFC4000 controller.	17 years ago
xfp_phy.c	sfc: Added checks for heap allocation failure	17 years ago