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| author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2020-03-05 23:02:52 +0300 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2020-03-16 10:30:49 -0700 |
| commit | f09d3174f002ee2cf15623d5a0f68f7393536ce7 (patch) | |
| tree | 26089da5142b45f5498d71dce04e1f0be210f296 /arch/arc/include/asm/dsp-impl.h | |
| parent | 7321e2ea0d6aece516a9c0827028ecda2ccaeae9 (diff) | |
| download | linux-f09d3174f002ee2cf15623d5a0f68f7393536ce7.tar.bz2 | |
ARC: allow userspace DSP applications to use AGU extensions
To be able to run DSP-enabled userspace applications with AGU
(address generation unit) extensions we additionally need to
save and restore following registers at context switch:
* AGU_AP*
* AGU_OS*
* AGU_MOD*
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/dsp-impl.h')
| -rw-r--r-- | arch/arc/include/asm/dsp-impl.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arc/include/asm/dsp-impl.h b/arch/arc/include/asm/dsp-impl.h index 8380f7bede81..e1aa212ca6eb 100644 --- a/arch/arc/include/asm/dsp-impl.h +++ b/arch/arc/include/asm/dsp-impl.h @@ -103,6 +103,21 @@ static inline void dsp_save_restore(struct task_struct *prev, DSP_AUX_SAVE_RESTORE(saveto, readfrom, DSP_BFLY0); DSP_AUX_SAVE_RESTORE(saveto, readfrom, DSP_FFT_CTRL); + +#ifdef CONFIG_ARC_DSP_AGU_USERSPACE + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_AP0); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_AP1); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_AP2); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_AP3); + + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_OS0); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_OS1); + + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_MOD0); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_MOD1); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_MOD2); + DSP_AUX_SAVE_RESTORE(saveto, readfrom, AGU_MOD3); +#endif /* CONFIG_ARC_DSP_AGU_USERSPACE */ } #else /* !CONFIG_ARC_DSP_SAVE_RESTORE_REGS */ @@ -117,9 +132,18 @@ static inline bool dsp_exist(void) return !!bcr.ver; } +static inline bool agu_exist(void) +{ + struct bcr_generic bcr; + + READ_BCR(ARC_AUX_AGU_BUILD, bcr); + return !!bcr.ver; +} + static inline void dsp_config_check(void) { CHK_OPT_STRICT(CONFIG_ARC_DSP_HANDLED, dsp_exist()); + CHK_OPT_WEAK(CONFIG_ARC_DSP_AGU_USERSPACE, agu_exist()); } #endif /* __ASEMBLY__ */ |