diff options
| 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/processor.h | |
| parent | 4827d0cf744e7e9cc73f10e1f4eaca904a3868c1 (diff) | |
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/processor.h')
| -rw-r--r-- | arch/arc/include/asm/processor.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h index ec532d1e0725..0fcea5bad343 100644 --- a/arch/arc/include/asm/processor.h +++ b/arch/arc/include/asm/processor.h @@ -14,6 +14,7 @@ #ifndef __ASSEMBLY__ #include <asm/ptrace.h> +#include <asm/dsp.h> #include <asm/fpu.h> #ifdef CONFIG_ARC_PLAT_EZNPS @@ -31,6 +32,9 @@ struct thread_struct { unsigned long ksp; /* kernel mode stack pointer */ unsigned long callee_reg; /* pointer to callee regs */ unsigned long fault_address; /* dbls as brkpt holder as well */ +#ifdef CONFIG_ARC_DSP_SAVE_RESTORE_REGS + struct dsp_callee_regs dsp; +#endif #ifdef CONFIG_ARC_FPU_SAVE_RESTORE struct arc_fpu fpu; #endif |