Re: [PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-10 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Saturday, March 7, 2020 03:12 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: Alexey Brodkin; linux-ker...@vger.kernel.org >Subject: Re: [PATCH v2 2/4] ARC: handle DSP presence in HW > >On 3/5/20 12:02 PM, Eugeniy Paltsev wrote: >&g

Re: [PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-10 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Saturday, March 7, 2020 03:12 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: Alexey Brodkin; linux-ker...@vger.kernel.org >Subject: Re: [PATCH v2 2/4] ARC: handle DSP presence in HW > >On 3/5/20 12:02 PM, Eugeniy Paltsev wrote: >&g

Re: [PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-06 Thread Vineet Gupta
On 3/5/20 12:02 PM, Eugeniy Paltsev wrote: > In case of DSP extension presence in HW some instructions > (related to integer multiply, multiply-accumulate, and divide > operation) executes on this DSP execution unit. So their > execution will depend on dsp configuration register (DSP_CTRL) > > As

[PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-05 Thread Eugeniy Paltsev
In case of DSP extension presence in HW some instructions (related to integer multiply, multiply-accumulate, and divide operation) executes on this DSP execution unit. So their execution will depend on dsp configuration register (DSP_CTRL) As we want these instructions to execute the same way rega