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* MIPS: Adjust the dma-common.c platform hooks.David Daney2009-01-111-15/+10Star
| | | | | | | | | We add a dev parameter to plat_unmap_dma_mem(), and hooks for plat_dma_supported() and plat_extra_sync_for_device() which should be nop changes for all existing targets. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Add missing calls to plat_unmap_dma_mem.David Daney2008-12-121-0/+3
| | | | | | | | dma_free_noncoherent() and dma_free_coherent() are missing calls to plat_unmap_dma_mem(). This patch adds them. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Don't unmap the memory for dma_sync*.David Daney2008-10-271-2/+0Star
| | | | | | | | | We were getting away with this for so long only because the only platform with a non-empty plat_unmap_dma_mem() doesn't call dma_sync_sg_for_cpu() and dma_sync_sg_for_device() from its commonly used drivers. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori2008-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [MIPS] Use correct dma flushing in dma_cache_sync()Thomas Bogendoerfer2008-01-291-1/+1
| | | | | | | | Not cache coherent R10k systems (like IP28) need to do real cache invalidates in dma_cache_sync(). Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Wrong CONFIG option prevents setup of DMA zone.Thomas Bogendoerfer2008-01-111-1/+1
| | | | | Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] 64-bit Sibyte kernels need DMA32.Ralf Baechle2007-11-261-9/+28
| | | | | | | | | | | | Sibyte SOCs only have 32-bit PCI. Due to the sparse use of the address space only the first 1GB of memory is mapped at physical addresses below 1GB. If a system has more than 1GB of memory 32-bit DMA will not be able to reach all of it. For now this patch is good enough to keep Sibyte users happy but it seems eventually something like swiotlb will be needed for Sibyte. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Cleanup random difference between the lmo and kernel.org tree.Ralf Baechle2007-10-291-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* mips: sg_page() falloutJens Axboe2007-10-231-0/+1
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Update arch/ to use sg helpersJens Axboe2007-10-221-9/+7Star
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [MIPS] Allow hardwiring of the CPU type to a single type for optimization.Ralf Baechle2007-10-121-2/+2
| | | | | | This saves a few k on systems which only ever ship with a single CPU type. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] R10000: Fix wrong test in dma-default.cMaxime Bizon2007-09-101-1/+1
| | | | | Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Make dma_map_sg handle sg elements which are longer than one pageThomas Bogendoerfer2007-06-061-2/+3
| | | | | Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Always use virt_to_phys() when translating kernel addressesFranck Bui-Huu2007-03-241-5/+12
| | | | | | | | | | | | | This patch fixes two places where we used plain 'x - PAGE_OFFSET' to achieve virtual to physical address convertions. This type of convertion is no more allowed since commit 6f284a2ce7b8bc49cb8455b1763357897a899abb. Reported-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> [Build fixes for machines that don't use the generic dma-coherence.h] Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] dma_sync_sg_for_cpu is a no-op except for non-coherent R10000s.Ralf Baechle2007-03-041-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix dma_sync_*_for_device() functionsThomas Bogendoerfer2007-02-271-3/+3
| | | | | Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}Ralf Baechle2007-02-131-0/+363
Platforms will now have to supply a function dma_device_is_coherent which returns if a particular device participates in the coherence domain. For most platforms this function will always return 0 or 1. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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