- 19 Apr, 2008 40 commits
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Glauber Costa authored
if the device hasn't provided a mask, abort allocation. Note that we're using a fallback device now, so it does not cover the case of a NULL device: just drivers passing NULL masks around. Signed-off-by:
Glauber Costa <gcosta@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Glauber Costa authored
Just return our allocation if we don't have an mmu. For i386, where this patch is being applied, we never have. So our goal is just to have the code to look like x86_64's. Signed-off-by:
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Glauber Costa authored
The claim is that i386 does it. Just it does not. So remove it. Signed-off-by:
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Glauber Costa authored
Use the same gfp masks for x86_64 and i386. It involves using HIGHMEM or DMA32 where necessary, for the sake of code compatibility, (no real effect), and using the NORETRY mask for i386. Signed-off-by:
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Glauber Costa authored
This patch puts in the code to retry allocation in case it fails. By its own, it does not make much sense but making the code look like x86_64. But later patches in this series will make we try to allocate from zones other than DMA first, which will possibly fail. Signed-off-by:
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Glauber Costa authored
If we fail, we'll loop into the allocation again, and then allocate in the DMA zone. Signed-off-by:
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Glauber Costa authored
We can use a fallback dev for cases of a NULL device being passed (mostly ISA) This comes from x86_64 implementation. Signed-off-by:
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Glauber Costa authored
We can do it here to, in the same way x86_64 does. Signed-off-by:
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Glauber Costa authored
virt_to_bus() is deprecated according to the docs, and moreover, won't return the right thing in i386 if we're dealing with high memory mappings. So we make our allocation function return a page, and then use page_address() (for virtual addr) and page_to_phys() (for physical addr) instead. Signed-off-by:
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Glauber Costa authored
We call unmap_single, if available. Signed-off-by:
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Glauber Costa authored
It goes to pci-dma.c, and is removed from the arch-specific files. Signed-off-by:
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Glauber Costa authored
i386 implements the declare coherent memory API, and x86_64 does not it is reflected in pieces of dma_alloc_coherent and dma_free_coherent. Those pieces are isolated in separate functions, that are declared as empty macros in x86_64. This way we can make the code the same. Signed-off-by:
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Glauber Costa authored
They are placed in an ifdef, since they are i386 specific the structure definition goes to dma-mapping.h. Signed-off-by:
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Glauber Costa authored
we merge the iommu initialization parameters in pci-dma.c Nice thing, that both architectures at least recognize the same parameters. usedac i386 parameter is marked for deprecation Signed-off-by:
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Glauber Costa authored
The code for both arches are very similar, so this patch merge them. Signed-off-by:
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Glauber Costa authored
via_no_dac provides a fixup that is the same for both architectures. Move it to pci-dma.c. Signed-off-by:
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Glauber Costa authored
This patch moves the bootmem functions, that are largely x86_64-specific into pci-dma.c. The code goes inside an ifdef. Signed-off-by:
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Glauber Costa authored
initcalls that triggers the various possibiities for dma subsys are moved to pci-dma.c. Signed-off-by:
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Glauber Costa authored
merge pci-base_32.c and pci-nommu_64.c into pci-nommu.c Their code were made the same, so now they can be merged. Signed-off-by:
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Glauber Costa authored
Move dma_ops structure definition to pci-dma.c, where it belongs. Signed-off-by:
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Glauber Costa authored
This is done to get the code closer to x86_64. Signed-off-by:
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Glauber Costa authored
In the very same way i386 do, we use WARN_ON functions in map_simple and map_sg. Signed-off-by:
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Glauber Costa authored
To make the code usable in i386, where we have high memory mappings, we drop te virt_to_bus(sg_virt()) construction in favour of sg_phys. Signed-off-by:
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Glauber Costa authored
This patch adds flush_write_buffers() in some functions of pci-nommu_64.c They are added anywhere i386 would also have it. This is not a problem for x86_64, since flush_rite_buffers() an nop for it. Signed-off-by:
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Glauber Costa authored
This patch implements mapping_error for pci-nommu_64.c. It takes care to keep the same compatible behaviour it already had. Although this file is not (yet) used for i386, we introduce the i386 version here. Again, care is taken, even at the expense of an ifdef, to keep the same behaviour inconditionally. Signed-off-by:
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Glauber Costa authored
This functions are now called conditionally on their existence in the struct. So just delete them, instead of keeping an empty implementation. Signed-off-by:
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Glauber Costa authored
This patch introduces pci-dma.c, a common file for pci dma between i386 and x86_64. As a start, dma_set_mask() is the same between architectures, and is placed there. Signed-off-by:
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Mark McLoughlin authored
ERROR: "dma_supported" [drivers/ssb/ssb.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/qla2xxx/qla2xxx.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic7xxx.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic79xx.ko] undefined! ERROR: "dma_supported" [drivers/net/pcnet32.ko] undefined! ERROR: "dma_supported" [drivers/media/video/saa7134/saa7134.ko] undefined! ERROR: "dma_set_mask" [drivers/media/video/meye.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx8802.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx8800.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx88-alsa.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx23885/cx23885.ko] undefined! They just need to be exported like on x86_64. dma_supported() and dma_set_mask() were previously inlined, but are now moved to pci-dma_32.c. Since they're used by various drivers, they need to be exported. Signed-off-by:
Mark McLoughlin <markmc@redhat.com> Signed-off-by:
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Glauber Costa authored
all the code that is left is ready to be merged as-is in dma-mapping.h. Signed-off-by:
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Glauber Costa authored
define it conditionally to i386. Signed-off-by:
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Glauber Costa authored
We provide a map_error function in pci-base_32.c to make sure i386 keeps with the same behaviour it used to. Signed-off-by:
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Glauber Costa authored
It's initially 0, since we don't expect any DMA there. Signed-off-by:
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Glauber Costa authored
Do it instead of using the conservative approach we're currently doing. This is the way x86_64 does, and this patch makes this piece of code the same between them, ready to be integrated. Signed-off-by:
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Glauber Costa authored
This is the way x86_64 does, so this make them equal. They have to be extern now in the header, and the extern definition is moved to the common dma-mapping.h header. Signed-off-by:
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Glauber Costa authored
they are the same in both architectures. Signed-off-by:
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Ingo Molnar authored
Signed-off-by:
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Glauber Costa authored
They are similar enough to do this move. the macro version is ugly, and we use inline functions instead. Signed-off-by:
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Glauber Costa authored
they are the same between architectures. (except for the fact that x86_64 has duplicate code) move them to dma-mapping.h Signed-off-by:
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Glauber Costa authored
i386 gets an empty function. Signed-off-by:
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Glauber Costa authored
i386 gets an empty function. Signed-off-by:
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