linux-kernel - [patch 1/2] agpgart - allow user-populated memory types.

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Date:	Fri, 08 Dec 2006 19:24:35 +0100
From:	Thomas Hellström <thomas@...gstengraphics.com>
To:	Dave Jones <davej@...hat.com>
CC:	Dave Airlie <airlied@...ux.ie>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: [patch 1/2] agpgart - allow user-populated memory types.

This patch allows drm to populate an agpgart structure with pages of its 
own.
It's needed for the new drm memory manager which dynamically flips pages 
in and out of AGP.

The patch modifies the generic functions as well as the intel agp 
driver. The intel drm driver is
currently the only one supporting the new memory manager.

Other agp drivers may need some minor fixing up once they have a 
corresponding memory manager enabled drm driver.

AGP memory types >= AGP_USER_TYPES are not populated by the agpgart 
driver, but the drm is expected to do that, as well as taking care of 
cache- and tlb flushing when needed.

It's not possible to request these types from user space using agpgart 
ioctls.

The intel driver also gets a new memory type for pages that can be bound 
cached to the intel GTT.

Patch against davej's agpgart.git

/Thomas Hellström

View attachment "patch1.diff" of type "text/x-patch" (29548 bytes)