261efc3f17
Adds some needed bits for a config option PS3_USE_LPAR_ADDR that disables the PS3 lpar address translation mechanism. This is a currently needed workaround for limitations in the design of the generic cell spu support. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
43 lines
1.4 KiB
Text
43 lines
1.4 KiB
Text
menu "PS3 Platform Options"
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depends on PPC_PS3
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config PS3_HTAB_SIZE
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depends on PPC_PS3
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int "PS3 Platform pagetable size"
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range 18 20
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default 20
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help
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This option is only for experts who may have the desire to fine
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tune the pagetable size on their system. The value here is
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expressed as the log2 of the page table size. Valid values are
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18, 19, and 20, corresponding to 256KB, 512KB and 1MB respectively.
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If unsure, choose the default (20) with the confidence that your
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system will have optimal runtime performance.
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config PS3_DYNAMIC_DMA
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depends on PPC_PS3 && EXPERIMENTAL
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bool "PS3 Platform dynamic DMA page table management"
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default n
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help
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This option will enable kernel support to take advantage of the
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per device dynamic DMA page table management provided by the Cell
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processor's IO Controller. This support incurs some runtime
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overhead and also slightly increases kernel memory usage. The
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current implementation should be considered experimental.
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This support is mainly for Linux kernel development. If unsure,
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say N.
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config PS3_USE_LPAR_ADDR
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depends on PPC_PS3 && EXPERIMENTAL
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bool "PS3 use lpar address space"
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default y
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help
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This option is solely for experimentation by experts. Disables
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translation of lpar addresses. SPE support currently won't work
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without this set to y.
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If you have any doubt, choose the default y.
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endmenu
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