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powerpc/cell: Move data segment faulting code out of cell platform

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__spu_trap_data_seg() currently contains code to determine the VSID and ESID
required for a particular EA and mm struct.

This code is generically useful for other co-processors. This moves the code of
the cell platform so it can be used by other powerpc code. It also adds 1TB
segment handling which Cell didn't support.  The new function is called
copro_calculate_slb().

This also moves the internal struct spu_slb to a generic struct copro_slb which
is now used in the Cell and copro code.  We use this new struct instead of
passing around esid and vsid parameters.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Ian Munsie 2014-10-08 19:54:51 +11:00 • committed by Michael Ellerman
parent e83d016975
commit 73d16a6e0e
5 changed files with 69 additions and 49 deletions
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7
arch/powerpc/include/asm/copro.h
View file

@ -10,7 +10,14 @@
#ifndef _ASM_POWERPC_COPRO_H
#define _ASM_POWERPC_COPRO_H
struct copro_slb
{
u64 esid, vsid;
};
int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
unsigned long dsisr, unsigned *flt);
int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb);
#endif /* _ASM_POWERPC_COPRO_H */