target/linux/layerscape/patches-4.4/7153-staging-fsl-mc-Added-MSI-support-to-the-MC-bus-drive.patch

   1 From f588a135d9260f2e7fe29b0bb0b5294fc9c99f6c Mon Sep 17 00:00:00 2001
   2 From: "J. German Rivera" <German.Rivera@freescale.com>
   3 Date: Wed, 6 Jan 2016 16:03:29 -0600
   4 Subject: [PATCH 153/226] staging: fsl-mc: Added MSI support to the MC bus
   5  driver
   6
   7 Initialize/Cleanup ITS-MSI support for the MC bus driver at driver
   8 init/exit time. Associate an MSI domain with each DPAA2 child device.
   9
  10 Signed-off-by: J. German Rivera <German.Rivera@freescale.com>
  11 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  12 ---
  13  drivers/staging/fsl-mc/bus/mc-bus.c |   12 ++++++++++++
  14  1 file changed, 12 insertions(+)
  15
  16 --- a/drivers/staging/fsl-mc/bus/mc-bus.c
  17 +++ b/drivers/staging/fsl-mc/bus/mc-bus.c
  18 @@ -16,6 +16,8 @@
  19  #include <linux/ioport.h>
  20  #include <linux/slab.h>
  21  #include <linux/limits.h>
  22 +#include <linux/bitops.h>
  23 +#include <linux/msi.h>
  24  #include "../include/dpmng.h"
  25  #include "../include/mc-sys.h"
  26  #include "dprc-cmd.h"
  27 @@ -472,6 +474,8 @@ int fsl_mc_device_add(struct dprc_obj_de
  28                 mc_dev->icid = parent_mc_dev->icid;
  29                 mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
  30                 mc_dev->dev.dma_mask = &mc_dev->dma_mask;
  31 +               dev_set_msi_domain(&mc_dev->dev,
  32 +                                  dev_get_msi_domain(&parent_mc_dev->dev));
  33         }
  34
  35         /*
  36 @@ -833,8 +837,15 @@ static int __init fsl_mc_bus_driver_init
  37         if (error < 0)
  38                 goto error_cleanup_dprc_driver;
  39
  40 +       error = its_fsl_mc_msi_init();
  41 +       if (error < 0)
  42 +               goto error_cleanup_mc_allocator;
  43 +
  44         return 0;
  45
  46 +error_cleanup_mc_allocator:
  47 +       fsl_mc_allocator_driver_exit();
  48 +
  49  error_cleanup_dprc_driver:
  50         dprc_driver_exit();
  51
  52 @@ -856,6 +867,7 @@ static void __exit fsl_mc_bus_driver_exi
  53         if (WARN_ON(!mc_dev_cache))
  54                 return;
  55
  56 +       its_fsl_mc_msi_cleanup();
  57         fsl_mc_allocator_driver_exit();
  58         dprc_driver_exit();
  59         platform_driver_unregister(&fsl_mc_bus_driver);