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| author |   Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2020-03-05 23:02:51 +0300 |
|---|---|---|
| committer |   Vineet Gupta <vgupta@synopsys.com> | 2020-03-16 10:30:49 -0700 |
| commit | 7321e2ea0d6aece516a9c0827028ecda2ccaeae9 (patch) | |
| tree | d53d77373a555448b2ef633c04e84dc9f3c6cc38 /arch/arc/include/asm/arcregs.h | |
| parent | ARC: handle DSP presence in HW (diff) | |
| download | linux-dev-7321e2ea0d6aece516a9c0827028ecda2ccaeae9.tar.xz linux-dev-7321e2ea0d6aece516a9c0827028ecda2ccaeae9.zip | |
ARC: add support for DSP-enabled userspace applications
To be able to run DSP-enabled userspace applications we need to
save and restore following DSP-related registers:
At IRQ/exception entry/exit:
* DSP_CTRL (save it and reset to value suitable for kernel)
* ACC0_LO, ACC0_HI (we already save them as r58, r59 pair)
At context switch:
* ACC0_GLO, ACC0_GHI
* DSP_BFLY0, DSP_FFT_CTRL
Reviewed-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include/asm/arcregs.h')
| -rw-r--r-- | arch/arc/include/asm/arcregs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 135f6ec08a69..aee1ee263065 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -120,6 +120,8 @@ /* * DSP-related registers + * Registers names must correspond to dsp_callee_regs structure fields names + * for automatic offset calculation in DSP_AUX_SAVE_RESTORE macros. */ #define ARC_AUX_DSP_BUILD 0x7A #define ARC_AUX_ACC0_LO 0x580 |