On Thu, Oct 20, 2022 at 07:53:25PM +0200, Maciej Kwapulinski wrote: > +IOCTL > +----- > +Intel(R) GNA driver controls the device through IOCTL interfaces. > +Following IOCTL commands - handled by DRM framework - are supported: > + > +GNA_GET_PARAMETER gets driver and device capabilities. > + > +GNA_GEM_NEW acquires new 4KB page aligned memory region ready for DMA operations. > + > +GNA_GEM_FREE frees memory region back to system. > + > +GNA_COMPUTE submits a request to the device queue. > + Memory regions acquired by GNA_GEM_NEW are part of request. > + > +GNA_WAIT blocks and waits on the submitted request. > + Use bullet lists for ioctl list above (with minor wording improv on the whole section): ---- >8 ---- diff --git a/Documentation/gpu/gna.rst b/Documentation/gpu/gna.rst index 7f3b7ce7e8f722..9a896664a3c29f 100644 --- a/Documentation/gpu/gna.rst +++ b/Documentation/gpu/gna.rst @@ -32,21 +32,22 @@ Multiple processes can independently file many requests to the driver. These req processed in a FIFO manner. The hardware can process one request at a time by using a FIFO queue. -IOCTL +ioctl ----- -Intel(R) GNA driver controls the device through IOCTL interfaces. -Following IOCTL commands - handled by DRM framework - are supported: +Intel(R) GNA driver controls the device through ioctl interfaces. +The following commands (handled by DRM framework) are supported: -GNA_GET_PARAMETER gets driver and device capabilities. + * GNA_GET_PARAMETER gets driver and device capabilities. -GNA_GEM_NEW acquires new 4KB page aligned memory region ready for DMA operations. + * GNA_GEM_NEW allocates new 4KB page of aligned memory region ready for DMA + operations. -GNA_GEM_FREE frees memory region back to system. + * GNA_GEM_FREE frees memory region back to system. -GNA_COMPUTE submits a request to the device queue. - Memory regions acquired by GNA_GEM_NEW are part of request. + * GNA_COMPUTE submits a request to the device queue. Memory regions allocated + by GNA_GEM_NEW become part of the request payload. -GNA_WAIT blocks and waits on the submitted request. + * GNA_WAIT blocks and waits on the submitted request. GNA MMU ------- Thanks. -- An old man doll... just what I always wanted! - Clara
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