1. 09 Oct, 2012 1 commit
  2. 03 Oct, 2012 1 commit
    • Ben Skeggs's avatar
      drm/nouveau/core: pull in most of the new core infrastructure · 9274f4a9
      Ben Skeggs authored
      This commit provides most of the infrastructure to support a major overhaul
      of Nouveau's internals coming in the following commits.  This work aims to
      take all the things we've learned over the last several years, and turn that
      into a cleaner architecture that's more maintainable going forward.
      
      RAMHT and MM bits of the new core have been left out for the moment, and
      will be pulled in as I go through the process of porting the code to
      become either subdev or engine modules.
      
      There are several main goals I wanted to achieve through this work:
      
      -- Reduce complexity
      
      The goal here was to make each component of the driver as independent as
      possible, which will ease maintainability and readability, and provide a
      good base for resetting locked up GPU units in the future.
      
      -- Better tracking of GPU units that are required at any given time
      
      This is for future PM work, we'll be able to tell exactly what parts of the
      GPU we need powered at any given point (etc).
      
      -- Expose all available NVIDIA GPUs to the client
      
      In order to support things such as multi-GPU channels, we want to be able
      to expose all the NVIDIA GPUs to the client over a single file descriptor
      so it can send a single push buffer to multiple GPUs.
      
      -- Untangle the core hardware support code from the DRM implementation
      
      This happened initially as an unexpected side-effect of developing the
      initial core infrastructure in userspace, but it turned into a goal of
      the whole project.  Initial benefits will be the availablility of a
      number of userspace tools and tests using the same code as the driver
      itself, but will also be important as I look into some virtualisation
      ideas.
      
      v2: Ben Skeggs <bskeggs@redhat.com>
      - fix duplicate assignments noticed by clang
      - implement some forgotten yelling in error path
      - ensure 64-bit engine mask is used everywhere
      
      v3: Marcin Slusarz <marcin.slusarz@gmail.com>
      - sparse fixes
      - inline nv_printk into nv_assert to prevent recursive inlining issues
      
      v4: Ben Skeggs <bskeggs@redhat.com>
      - fixed minor memory leak on gpuobj destruction
      Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
      9274f4a9