target/linux/brcm2708/patches-3.10/0039-bcm2708-Add-vc_cma-driver-to-enable-use-of-CMA.patch

   1 From bf571a571b090c16cd49458126e996243d8a2626 Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Thu, 28 Mar 2013 00:10:32 +0000
   4 Subject: [PATCH 039/174] bcm2708: Add vc_cma driver to enable use of CMA
   5
   6 ---
   7  arch/arm/mach-bcm2708/bcm2708.c | 16 ++++++++++++++++
   8  1 file changed, 16 insertions(+)
   9
  10 --- a/arch/arm/mach-bcm2708/bcm2708.c
  11 +++ b/arch/arm/mach-bcm2708/bcm2708.c
  12 @@ -60,6 +60,11 @@
  13  #include "armctrl.h"
  14  #include "clock.h"
  15
  16 +#ifdef CONFIG_BCM_VC_CMA
  17 +#include <linux/broadcom/vc_cma.h>
  18 +#endif
  19 +
  20 +
  21  /* Effectively we have an IOMMU (ARM<->VideoCore map) that is set up to
  22   * give us IO access only to 64Mbytes of physical memory (26 bits).  We could
  23   * represent this window by setting our dmamasks to 26 bits but, in fact
  24 @@ -693,6 +698,9 @@ void __init bcm2708_init(void)
  25  {
  26         int i;
  27
  28 +#if defined(CONFIG_BCM_VC_CMA)
  29 +       vc_cma_early_init();
  30 +#endif
  31         printk("bcm2708.uart_clock = %d\n", uart_clock);
  32         pm_power_off = bcm2708_power_off;
  33
  34 @@ -889,6 +897,13 @@ void __init bcm2708_init_early(void)
  35         init_dma_coherent_pool_size(SZ_4M);
  36  }
  37
  38 +static void __init board_reserve(void)
  39 +{
  40 +#if defined(CONFIG_BCM_VC_CMA)
  41 +       vc_cma_reserve();
  42 +#endif
  43 +}
  44 +
  45  MACHINE_START(BCM2708, "BCM2708")
  46      /* Maintainer: Broadcom Europe Ltd. */
  47         .map_io = bcm2708_map_io,
  48 @@ -897,6 +912,7 @@ MACHINE_START(BCM2708, "BCM2708")
  49         .init_machine = bcm2708_init,
  50         .init_early = bcm2708_init_early,
  51         .restart = bcm2708_restart,
  52 +       .reserve = board_reserve,
  53  MACHINE_END
  54
  55  module_param(boardrev, uint, 0644);