PM_agpMemoryType

Declaration

typedef enum {
PM_agpUncached,
PM_agpWriteCombine,
PM_agpIntelDCACHE
} PM_agpMemoryType

Prototype In

pmapi.h

Description

This enumeration defines the type values passed to the PM_agpReservePhysical function, to define how the physical memory mapping should be handled.

The PM_agpUncached type indicates that the memory should be allocated as uncached memory.

The PM_agpWriteCombine type indicates that write combining should be enabled for physical memory mapping. This is used for framebuffer write combing and speeds up direct framebuffer writes to the memory.

The PM_agpIntelDCACHE type indicates that memory should come from the Intel i81x Display Cache (or DCACHE) memory pool. This flag is specific to the Intel i810 and i815 controllers, and should not be passed for any other controller type.

Members

PM_agpUncached | Indicates that the memory should be uncached
PM_agpWriteCombine | Indicates that the memory should be write combined
PM_agpIntelDCACHE | Indicates that the memory should come from DCACHE pool

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