Re: [Intel-gfx] [PATCH] drm/i915/guc: Request RP0 before loading firmware

2021-12-21 Thread Sundaresan, Sujaritha
On 12/21/2021 10:11 AM, Ewins, Jon wrote: On 12/20/2021 3:52 PM, Sundaresan, Sujaritha wrote: On 12/16/2021 3:30 PM, Vinay Belgaumkar wrote: By default, GT (and GuC) run at RPn. Requesting for RP0 before firmware load can speed up DMA and HuC auth as well. In addition to writing to 0xA008,

Re: [Intel-gfx] [PATCH] drm/i915/guc: Request RP0 before loading firmware

2021-12-21 Thread Ewins, Jon
On 12/20/2021 3:52 PM, Sundaresan, Sujaritha wrote: On 12/16/2021 3:30 PM, Vinay Belgaumkar wrote: By default, GT (and GuC) run at RPn. Requesting for RP0 before firmware load can speed up DMA and HuC auth as well. In addition to writing to 0xA008, we also need to enable swreq in 0xA024 so

Re: [Intel-gfx] [PATCH] drm/i915/guc: Request RP0 before loading firmware

2021-12-20 Thread Sundaresan, Sujaritha
On 12/16/2021 3:30 PM, Vinay Belgaumkar wrote: By default, GT (and GuC) run at RPn. Requesting for RP0 before firmware load can speed up DMA and HuC auth as well. In addition to writing to 0xA008, we also need to enable swreq in 0xA024 so that Punit will pay heed to our request. SLPC will