1. 25 4月, 2014 3 次提交
  2. 06 3月, 2014 2 次提交
  3. 09 8月, 2013 1 次提交
  4. 25 10月, 2012 1 次提交
    • D
      Add new uio device for dynamic memory allocation · 0a0c3b5a
      Damian Hobson-Garcia 提交于
      This device extends the uio_pdrv_genirq driver to provide limited
      dynamic memory allocation for UIO devices.  This allows UIO devices
      to use CMA and IOMMU allocated memory regions. This driver is based
      on the uio_pdrv_genirq driver and provides the same generic interrupt
      handling capabilities.  Like uio_prdv_genirq,
      a fixed number of memory regions, defined in the platform device's
      .resources field are exported to userpace. This driver adds the ability
      to export additional regions whose number and size are known at boot time,
      but whose memory is not allocated until the uio device file is opened for
      the first time.  When the device file is closed, the allocated memory block
      is freed.  Physical (DMA) addresses for the dynamic regions are provided to
      the userspace via /sys/class/uio/uioX/maps/mapY/addr in the same way as
      static addresses are when the uio device file is open, when no processes
      are holding the device file open, the address returned to userspace is
      DMA_ERROR_CODE.
      Signed-off-by: NDamian Hobson-Garcia <dhobsong@igel.co.jp>
      Signed-off-by: N"Hans J. Koch" <hjk@hansjkoch.de>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      0a0c3b5a
  5. 08 3月, 2011 1 次提交
  6. 26 11月, 2009 2 次提交
  7. 17 6月, 2009 1 次提交