From 771fe6b912fca54f03e8a72eb63058b582775362 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Fri, 5 Jun 2009 14:42:42 +0200 Subject: drm/radeon: introduce kernel modesetting for radeon hardware Add kernel modesetting support to radeon driver, use the ttm memory manager to manage memory and DRM/GEM to provide userspace API. In order to avoid backward compatibility issue and to allow clean design and code the radeon kernel modesetting use different code path than old radeon/drm driver. When kernel modesetting is enabled the IOCTL of radeon/drm driver are considered as invalid and an error message is printed in the log and they return failure. KMS enabled userspace will use new API to talk with the radeon/drm driver. The new API provide functions to create/destroy/share/mmap buffer object which are then managed by the kernel memory manager (here TTM). In order to submit command to the GPU the userspace provide a buffer holding the command stream, along this buffer userspace have to provide a list of buffer object used by the command stream. The kernel radeon driver will then place buffer in GPU accessible memory and will update command stream to reflect the position of the different buffers. The kernel will also perform security check on command stream provided by the user, we want to catch and forbid any illegal use of the GPU such as DMA into random system memory or into memory not owned by the process supplying the command stream. This part of the code is still incomplete and this why we propose that patch as a staging driver addition, future security might forbid current experimental userspace to run. This code support the following hardware : R1XX,R2XX,R3XX,R4XX,R5XX (radeon up to X1950). Works is underway to provide support for R6XX, R7XX and newer hardware (radeon from HD2XXX to HD4XXX). Authors: Jerome Glisse Dave Airlie Alex Deucher Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/Kconfig | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/Kconfig') diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 64a57adc0a2c..c961fe415aef 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -19,7 +19,7 @@ menuconfig DRM (/dev/agpgart) support. config DRM_TTM - tristate "TTM memory manager" + tristate depends on DRM help GPU memory management subsystem for devices with multiple @@ -44,6 +44,11 @@ config DRM_R128 config DRM_RADEON tristate "ATI Radeon" depends on DRM && PCI + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + select FB + select FRAMEBUFFER_CONSOLE if !EMBEDDED help Choose this option if you have an ATI Radeon graphics card. There are both PCI and AGP versions. You don't need to choose this to -- cgit v1.2.2