1. 10 Dec, 2009 2 commits
  2. 02 Dec, 2009 2 commits
    • Dave Airlie's avatar
      drm/radeon/kms: add irq mitigation code for sw interrupt. · 1614f8b1
      Dave Airlie authored
      We really don't need to process every irq that comes in, we only
      really want to do SW irq processing when we are actually waiting for
      a fence to pass. I'm not 100% sure this is race free esp on non-MSI systems
      so it needs some testing.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    • Alex Deucher's avatar
      drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3) · d8f60cfc
      Alex Deucher authored
      This enables the use of interrupts on r6xx/r7xx hardware.
      Interrupts are implemented via a ring buffer.  The GPU adds
      interrupts vectors to the ring and the host reads them off
      in the interrupt handler.  The interrupt controller requires
      firmware like the CP.  This firmware must be installed and
      accessble to the firmware loader for interrupts to function.
      MSIs don't seem to work on my RS780.  They work fine on all
      my discrete cards.  I'm not sure about other RS780s or
      RS880s.  I've disabled MSIs on RS780 and RS880, but it would
      probably be worth checking on some other systems.
      v2 - fix some checkpatch.pl problems;
           re-read the disp int status reg if we restart the ih;
      v3 - remove the irq handler if r600_irq_init() fails;
           remove spinlock in r600_ih_ring_fini();
           move ih rb overflow check to r600_get_ih_wptr();
           move irq ack to separate function;
      Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
  3. 08 Sep, 2009 3 commits
  4. 29 Jul, 2009 1 commit
  5. 15 Jun, 2009 1 commit
    • Jerome Glisse's avatar
      drm/radeon: introduce kernel modesetting for radeon hardware · 771fe6b9
      Jerome Glisse authored
      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).
          Jerome Glisse <jglisse@redhat.com>
          Dave Airlie <airlied@redhat.com>
          Alex Deucher <alexdeucher@gmail.com>
      Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>