Automatic waking of power domains for graphics configuration requests

A non-transitory computer-readable storage medium having stored thereon data representing sequences of instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• receiving a graphics configuration request at one or more configuration registers of an interface bridge, the request being directed to a destination graphics register;
• identifying a power domain for the destination graphics register, wherein the identification of the power domain is based at least in part on shared information maintained for address routing;
• determining whether the identified power domain is in a reduced power state;
• upon determining that the identified power domain is in a reduced power state, generating a wake indication for the identified power domain;
• and
• transferring the configuration request to the destination graphics register.

A system comprising:

• a processor to process data;
• a graphics domain for graphics operation;
• a driver run by the processor to provide configuration requests to target graphics registers in the graphics domain;
• and
• an interface bridge between the processor and the graphics domain, the interface bridge including:
• a plurality of configuration registers, the configuration registers including a plurality of registers to receive graphics configuration requests,
• an automatic power domain mechanism to identify a power domain for a target graphics register for each configuration request received from the driver, to determine whether an identified power domain is in a reduced power state, and, upon determining that an identified power domain is in a reduced power state, to generate a wake indicate for the power domain, and
• a processor to process configuration requests;
• wherein the automatic power domain mechanism is to identify a power domain for the target graphics register based on shared information accessed by the automatic power domain mechanism.