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| author | Jeremy Kerr <jk@ozlabs.org> | 2007-04-23 21:08:16 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-04-23 21:18:55 +0200 |
| commit | c8a1e9393a86f862ab9c8bc0db9b8a1822226f84 (patch) | |
| tree | 9ff1d8d44d5b5caa98770457297ec26382e1c9f5 /arch | |
| parent | 57dace2391ba10135e38457904121e7ef34d0c83 (diff) | |
| download | linux-c8a1e9393a86f862ab9c8bc0db9b8a1822226f84.tar.gz linux-c8a1e9393a86f862ab9c8bc0db9b8a1822226f84.tar.bz2 linux-c8a1e9393a86f862ab9c8bc0db9b8a1822226f84.zip | |
[POWERPC] spufs: provide siginfo for SPE faults
This change populates a siginfo struct for SPE application exceptions
(ie, invalid DMAs and illegal instructions).
Tested on an IBM Cell Blade.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/fault.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c index 182dc914cbc9..0f75c07e29d8 100644 --- a/arch/powerpc/platforms/cell/spufs/fault.c +++ b/arch/powerpc/platforms/cell/spufs/fault.c @@ -97,28 +97,46 @@ bad_area: return -EFAULT; } -static void spufs_handle_dma_error(struct spu_context *ctx, int type) +static void spufs_handle_dma_error(struct spu_context *ctx, + unsigned long ea, int type) { if (ctx->flags & SPU_CREATE_EVENTS_ENABLED) { ctx->event_return |= type; wake_up_all(&ctx->stop_wq); } else { + siginfo_t info; + memset(&info, 0, sizeof(info)); + switch (type) { - case SPE_EVENT_DMA_ALIGNMENT: - case SPE_EVENT_SPE_DATA_STORAGE: case SPE_EVENT_INVALID_DMA: - force_sig(SIGBUS, /* info, */ current); + info.si_signo = SIGBUS; + info.si_code = BUS_OBJERR; + break; + case SPE_EVENT_SPE_DATA_STORAGE: + info.si_signo = SIGBUS; + info.si_addr = (void __user *)ea; + info.si_code = BUS_ADRERR; + break; + case SPE_EVENT_DMA_ALIGNMENT: + info.si_signo = SIGBUS; + /* DAR isn't set for an alignment fault :( */ + info.si_code = BUS_ADRALN; break; case SPE_EVENT_SPE_ERROR: - force_sig(SIGILL, /* info */ current); + info.si_signo = SIGILL; + info.si_addr = (void __user *)(unsigned long) + ctx->ops->npc_read(ctx) - 4; + info.si_code = ILL_ILLOPC; break; } + if (info.si_signo) + force_sig_info(info.si_signo, &info, current); } } void spufs_dma_callback(struct spu *spu, int type) { - spufs_handle_dma_error(spu->ctx, type); + spufs_handle_dma_error(spu->ctx, spu->dar, type); } EXPORT_SYMBOL_GPL(spufs_dma_callback); @@ -186,7 +204,7 @@ int spufs_handle_class1(struct spu_context *ctx) if (ctx->spu) ctx->ops->restart_dma(ctx); } else - spufs_handle_dma_error(ctx, SPE_EVENT_SPE_DATA_STORAGE); + spufs_handle_dma_error(ctx, ea, SPE_EVENT_SPE_DATA_STORAGE); return ret; } |