arch/ia64/sn/io/platform_init/irix_io_init.c

   1 /* $Id$
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
   8  */
   9
  10 #include <linux/types.h>
  11 #include <linux/config.h>
  12 #include <linux/slab.h>
  13 #include <asm/sn/sgi.h>
  14 #include <asm/sn/io.h>
  15 #include <asm/sn/sn_cpuid.h>
  16 #include <asm/sn/klconfig.h>
  17 #include <asm/sn/sn_private.h>
  18 #include <linux/smp.h>
  19 #include <asm/sn/simulator.h>
  20
  21 extern void init_all_devices(void);
  22 extern void klhwg_add_all_modules(vertex_hdl_t);
  23 extern void klhwg_add_all_nodes(vertex_hdl_t);
  24
  25 extern vertex_hdl_t hwgraph_root;
  26 extern void io_module_init(void);
  27 extern int pci_bus_to_hcl_cvlink(void);
  28 extern void mlreset(void);
  29
  30 /* #define DEBUG_IO_INIT 1 */
  31 #ifdef DEBUG_IO_INIT
  32 #define DBG(x...) printk(x)
  33 #else
  34 #define DBG(x...)
  35 #endif /* DEBUG_IO_INIT */
  36
  37 /*
  38  * This routine is responsible for the setup of all the IRIX hwgraph style
  39  * stuff that's been pulled into linux.  It's called by sn_pci_find_bios which
  40  * is called just before the generic Linux PCI layer does its probing (by
  41  * platform_pci_fixup aka sn_pci_fixup).
  42  *
  43  * It is very IMPORTANT that this call is only made by the Master CPU!
  44  *
  45  */
  46
  47 void
  48 irix_io_init(void)
  49 {
  50         cnodeid_t cnode;
  51
  52         /*
  53          * This is the Master CPU.  Emulate mlsetup and main.c in Irix.
  54          */
  55         mlreset();
  56
  57         /*
  58          * Initialize platform-dependent vertices in the hwgraph:
  59          *      module
  60          *      node
  61          *      cpu
  62          *      memory
  63          *      slot
  64          *      hub
  65          *      router
  66          *      xbow
  67          */
  68
  69         io_module_init(); /* Use to be called module_init() .. */
  70         klhwg_add_all_modules(hwgraph_root);
  71         klhwg_add_all_nodes(hwgraph_root);
  72
  73         for (cnode = 0; cnode < numnodes; cnode++) {
  74                 extern void per_hub_init(cnodeid_t);
  75                 per_hub_init(cnode);
  76         }
  77
  78         /* We can do headless hub cnodes here .. */
  79
  80         /*
  81          *
  82          * Our IO Infrastructure drivers are in place ..
  83          * Initialize the whole IO Infrastructure .. xwidget/device probes.
  84          *
  85          */
  86         init_all_devices();
  87         pci_bus_to_hcl_cvlink();
  88 }