linux/include/asm-x86/device.h

#ifndef ASM_X86__DEVICE_H
#define ASM_X86__DEVICE_H

struct dev_archdata {
#ifdef CONFIG_ACPI
	void	*acpi_handle;
#endif
#ifdef CONFIG_X86_64
struct dma_mapping_ops *dma_ops;
#endif
#ifdef CONFIG_DMAR
	void *iommu; /* hook for IOMMU specific extension */
#endif
};

#endif /* ASM_X86__DEVICE_H */
x86: consolidate header guards This patch is the result of an automatic script that consolidates the format of all the headers in include/asm-x86/. The format: 1. No leading underscore. Names with leading underscores are reserved. 2. Pathname components are separated by two underscores. So we can distinguish between mm_types.h and mm/types.h. 3. Everything except letters and numbers are turned into single underscores. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> 2008-06-18 15:08:48 +00:00			`#ifndef ASM_X86__DEVICE_H`
			`#define ASM_X86__DEVICE_H`
x86: unify some more trivial include/asm-x86/ 32/64 variants Scripted unification. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2007-10-15 11:57:47 +00:00
			`struct dev_archdata {`
			`#ifdef CONFIG_ACPI`
			`void *acpi_handle;`
i386/x86_64: move headers to include/asm-x86 Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> 2007-10-11 09:20:03 +00:00			`#endif`
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> 2008-07-26 02:44:49 +00:00			`#ifdef CONFIG_X86_64`
			`struct dma_mapping_ops *dma_ops;`
			`#endif`
intel-iommu: fix for IOMMU early crash pci_dev's->sysdata is highly overloaded and currently IOMMU is broken due to IOMMU code depending on this field. This patch introduces new field in pci_dev's dev.archdata struct to hold IOMMU specific per device IOMMU private data. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Greg KH <greg@kroah.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2007-10-21 23:41:59 +00:00			`#ifdef CONFIG_DMAR`
			`void iommu; / hook for IOMMU specific extension */`
			`#endif`
x86: unify some more trivial include/asm-x86/ 32/64 variants Scripted unification. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2007-10-15 11:57:47 +00:00			`};`

x86: consolidate header guards This patch is the result of an automatic script that consolidates the format of all the headers in include/asm-x86/. The format: 1. No leading underscore. Names with leading underscores are reserved. 2. Pathname components are separated by two underscores. So we can distinguish between mm_types.h and mm/types.h. 3. Everything except letters and numbers are turned into single underscores. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com> 2008-06-18 15:08:48 +00:00			`#endif /* ASM_X86__DEVICE_H */`