target/linux/brcm47xx/patches-3.18/030-05-MIPS-BCM47XX-Initialize-bcma-bus-later-with-mm-avail.patch

   1 From e5810fa0c1bed16fdfb408862a2e17e962ec5cf6 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Tue, 28 Oct 2014 14:40:38 +0100
   4 Subject: [PATCH 158/158] MIPS: BCM47XX: Initialize bcma bus later (with mm
   5  available)
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Initializaion with memory allocator available will be much simpler, this
  11 will allow cleanup in the bcma code.
  12
  13 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  14 Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
  15 Cc: linux-mips@linux-mips.org
  16 Patchwork: https://patchwork.linux-mips.org/patch/8234/
  17 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
  18 ---
  19  arch/mips/bcm47xx/bcm47xx_private.h |  3 +++
  20  arch/mips/bcm47xx/irq.c             |  8 ++++++++
  21  arch/mips/bcm47xx/setup.c           | 33 +++++++++++++++++++++++++++------
  22  3 files changed, 38 insertions(+), 6 deletions(-)
  23
  24 --- a/arch/mips/bcm47xx/bcm47xx_private.h
  25 +++ b/arch/mips/bcm47xx/bcm47xx_private.h
  26 @@ -15,6 +15,9 @@ int __init bcm47xx_buttons_register(void
  27  /* leds.c */
  28  void __init bcm47xx_leds_register(void);
  29
  30 +/* setup.c */
  31 +void __init bcm47xx_bus_setup(void);
  32 +
  33  /* workarounds.c */
  34  void __init bcm47xx_workarounds(void);
  35
  36 --- a/arch/mips/bcm47xx/irq.c
  37 +++ b/arch/mips/bcm47xx/irq.c
  38 @@ -22,6 +22,8 @@
  39   *  675 Mass Ave, Cambridge, MA 02139, USA.
  40   */
  41
  42 +#include "bcm47xx_private.h"
  43 +
  44  #include <linux/types.h>
  45  #include <linux/interrupt.h>
  46  #include <linux/irq.h>
  47 @@ -65,6 +67,12 @@ DEFINE_HWx_IRQDISPATCH(7)
  48
  49  void __init arch_init_irq(void)
  50  {
  51 +       /*
  52 +        * This is the first arch callback after mm_init (we can use kmalloc),
  53 +        * so let's finish bus initialization now.
  54 +        */
  55 +       bcm47xx_bus_setup();
  56 +
  57  #ifdef CONFIG_BCM47XX_BCMA
  58         if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
  59                 bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
  60 --- a/arch/mips/bcm47xx/setup.c
  61 +++ b/arch/mips/bcm47xx/setup.c
  62 @@ -156,15 +156,14 @@ static void __init bcm47xx_register_bcma
  63         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
  64         if (err)
  65                 panic("Failed to register BCMA bus (err %d)", err);
  66 -
  67 -       err = bcma_host_soc_init(&bcm47xx_bus.bcma);
  68 -       if (err)
  69 -               panic("Failed to initialize BCMA bus (err %d)", err);
  70 -
  71 -       bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
  72  }
  73  #endif
  74
  75 +/*
  76 + * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
  77 + * to detect memory and record it with add_memory_region.
  78 + * Any extra initializaion performed here must not use kmalloc or bootmem.
  79 + */
  80  void __init plat_mem_setup(void)
  81  {
  82         struct cpuinfo_mips *c = &current_cpu_data;
  83 @@ -193,6 +192,28 @@ void __init plat_mem_setup(void)
  84         _machine_restart = bcm47xx_machine_restart;
  85         _machine_halt = bcm47xx_machine_halt;
  86         pm_power_off = bcm47xx_machine_halt;
  87 +}
  88 +
  89 +/*
  90 + * This finishes bus initialization doing things that were not possible without
  91 + * kmalloc. Make sure to call it late enough (after mm_init).
  92 + */
  93 +void __init bcm47xx_bus_setup(void)
  94 +{
  95 +#ifdef CONFIG_BCM47XX_BCMA
  96 +       if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
  97 +               int err;
  98 +
  99 +               err = bcma_host_soc_init(&bcm47xx_bus.bcma);
 100 +               if (err)
 101 +                       panic("Failed to initialize BCMA bus (err %d)", err);
 102 +
 103 +               bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
 104 +                                           NULL);
 105 +       }
 106 +#endif
 107 +
 108 +       /* With bus initialized we can access NVRAM and detect the board */
 109         bcm47xx_board_detect();
 110         mips_set_machine_name(bcm47xx_board_get_name());
 111  }