git.openwrt.org Git - openwrt/openwrt.git/blob

   1 From e6c39c2219f9d308ea57c09fc1b0b5b151b52b7d Mon Sep 17 00:00:00 2001
   2 From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
   3 Date: Mon, 16 Apr 2018 11:33:11 +0300
   4 Subject: [PATCH] bus: fsl-mc: define macros for iommu enablement for fsl-mc
   5  bus
   6
   7 Macros to get coherency and the container device of the devices on
   8 fsl-mc bus are required to suport SMMU for this bus. This patch
   9 defines the same.
  10
  11 Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
  12 Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
  13 ---
  14  include/linux/fsl/mc.h | 4 ++++
  15  1 file changed, 4 insertions(+)
  16
  17 --- a/include/linux/fsl/mc.h
  18 +++ b/include/linux/fsl/mc.h
  19 @@ -356,6 +356,10 @@ int mc_send_command(struct fsl_mc_io *mc
  20  #define fsl_mc_cont_dev(_dev) (fsl_mc_is_cont_dev(_dev) ? \
  21         (_dev) : (_dev)->parent)
  22
  23 +#define fsl_mc_is_dev_coherent(_dev) \
  24 +       (!((to_fsl_mc_device(_dev))->obj_desc.flags & \
  25 +       FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
  26 +
  27  /*
  28   * module_fsl_mc_driver() - Helper macro for drivers that don't do
  29   * anything special in module init/exit.  This eliminates a lot of