arch/ia64/sn/include/xtalk/hubdev.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
   7  */
   8 #ifndef _ASM_IA64_SN_XTALK_HUBDEV_H
   9 #define _ASM_IA64_SN_XTALK_HUBDEV_H
  10
  11 #include "xtalk/xwidgetdev.h"
  12
  13 #define HUB_WIDGET_ID_MAX 0xf
  14 #define DEV_PER_WIDGET (2*2*8)
  15 #define IIO_ITTE_WIDGET_BITS    4       /* size of widget field */
  16 #define IIO_ITTE_WIDGET_MASK    ((1<<IIO_ITTE_WIDGET_BITS)-1)
  17 #define IIO_ITTE_WIDGET_SHIFT   8
  18
  19 #define IIO_ITTE_WIDGET(itte)   \
  20         (((itte) >> IIO_ITTE_WIDGET_SHIFT) & IIO_ITTE_WIDGET_MASK)
  21
  22 /*
  23  * Use the top big window as a surrogate for the first small window
  24  */
  25 #define SWIN0_BIGWIN            HUB_NUM_BIG_WINDOW
  26 #define IIO_NUM_ITTES   7
  27 #define HUB_NUM_BIG_WINDOW      (IIO_NUM_ITTES - 1)
  28
  29 /* This struct is shared between the PROM and the kernel.
  30  * Changes to this struct will require corresponding changes to the kernel.
  31  */
  32 struct sn_flush_device_common {
  33         int sfdl_bus;
  34         int sfdl_slot;
  35         int sfdl_pin;
  36         struct common_bar_list {
  37                 unsigned long start;
  38                 unsigned long end;
  39         } sfdl_bar_list[6];
  40         unsigned long sfdl_force_int_addr;
  41         unsigned long sfdl_flush_value;
  42         volatile unsigned long *sfdl_flush_addr;
  43         u32 sfdl_persistent_busnum;
  44         u32 sfdl_persistent_segment;
  45         struct pcibus_info *sfdl_pcibus_info;
  46 };
  47
  48 /* This struct is kernel only and is not used by the PROM */
  49 struct sn_flush_device_kernel {
  50         spinlock_t sfdl_flush_lock;
  51         struct sn_flush_device_common *common;
  52 };
  53
  54 /* 01/16/06 This struct is the old PROM/kernel struct and needs to be included
  55  * for older official PROMs to function on the new kernel base.  This struct
  56  * will be removed when the next official PROM release occurs. */
  57
  58 struct sn_flush_device_war {
  59         struct sn_flush_device_common common;
  60         u32 filler; /* older PROMs expect the default size of a spinlock_t */
  61 };
  62
  63 /*
  64  * **widget_p - Used as an array[wid_num][device] of sn_flush_device_kernel.
  65  */
  66 struct sn_flush_nasid_entry  {
  67         struct sn_flush_device_kernel **widget_p; // Used as an array of wid_num
  68         u64 iio_itte[8];
  69 };
  70
  71 struct hubdev_info {
  72         geoid_t                         hdi_geoid;
  73         short                           hdi_nasid;
  74         short                           hdi_peer_nasid;   /* Dual Porting Peer */
  75
  76         struct sn_flush_nasid_entry     hdi_flush_nasid_list;
  77         struct xwidget_info             hdi_xwidget_info[HUB_WIDGET_ID_MAX + 1];
  78
  79
  80         void                            *hdi_nodepda;
  81         void                            *hdi_node_vertex;
  82         u32                             max_segment_number;
  83         u32                             max_pcibus_number;
  84 };
  85
  86 extern void hubdev_init_node(nodepda_t *, cnodeid_t);
  87 extern void hub_error_init(struct hubdev_info *);
  88 extern void ice_error_init(struct hubdev_info *);
  89
  90
  91 #endif /* _ASM_IA64_SN_XTALK_HUBDEV_H */