include/asm-ia64/sn/nic.h

   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, 2000-2002 Silicon Graphics, Inc. All rights reserved.
   8  */
   9 #ifndef _ASM_IA64_SN_NIC_H
  10 #define _ASM_IA64_SN_NIC_H
  11
  12 #include <asm/types.h>
  13 #include <asm/sn/types.h>
  14 #include <linux/devfs_fs_kernel.h>
  15
  16 #define MCR_DATA(x)                     ((int) ((x) & 1))
  17 #define MCR_DONE(x)                     ((x) & 2)
  18 #define MCR_PACK(pulse, sample)         ((pulse) << 10 | (sample) << 2)
  19
  20 typedef __psunsigned_t  nic_data_t;
  21
  22 typedef int
  23 nic_access_f(nic_data_t data,
  24              int pulse, int sample, int delay);
  25
  26 typedef nic_access_f   *nic_access_t;
  27
  28 typedef struct nic_vmce_s      *nic_vmce_t;
  29 typedef void                    nic_vmc_func(devfs_handle_t v);
  30
  31 /*
  32  * PRIVATE data for Dallas NIC
  33  */
  34
  35 typedef struct nic_state_t {
  36     nic_access_t        access;
  37     nic_data_t          data;
  38     int                 last_disc;
  39     int                 done;
  40     int                 bit_index;
  41     int                 disc_marker;
  42     uchar_t             bits[64];
  43 } nic_state_t;
  44
  45 /*
  46  * Public interface for Dallas NIC
  47  *
  48  *
  49  *   Access Routine
  50  *
  51  *   nic_setup requires an access routine that pulses the NIC line for a
  52  *   specified duration, samples the NIC line after a specified duration,
  53  *   then delays for a third specified duration (for precharge).
  54  *
  55  *   This general scheme allows us to access NICs through any medium
  56  *   (e.g. hub regs, bridge regs, vector writes, system ctlr commands).
  57  *
  58  *   The access routine should return the sample value 0 or 1, or if an
  59  *   error occurs, return a negative error code.  Negative error codes from
  60  *   the access routine will abort the NIC operation and be propagated
  61  *   through out of the top-level NIC call.
  62  */
  63
  64 #define NIC_OK                  0
  65 #define NIC_DONE                1
  66 #define NIC_FAIL                2
  67 #define NIC_BAD_CRC             3
  68 #define NIC_NOT_PRESENT         4
  69 #define NIC_REDIR_LOOP          5
  70 #define NIC_PARAM               6
  71 #define NIC_NOMEM               7
  72
  73 uint64_t nic_get_phase_bits(void);
  74
  75 extern int nic_setup(nic_state_t *ns,
  76                      nic_access_t access,
  77                      nic_data_t data);
  78
  79 extern int nic_next(nic_state_t *ns,
  80                     char *serial,
  81                     char *family,
  82                     char *crc);
  83
  84 extern int nic_read_one_page(nic_state_t *ns,
  85                              char *family,
  86                              char *serial,
  87                              char *crc,
  88                              int start,
  89                              uchar_t *redirect,
  90                              uchar_t *byte);
  91
  92 extern int nic_read_mfg(nic_state_t *ns,
  93                         char *family,
  94                         char *serial,
  95                         char *crc,
  96                         uchar_t *pageA,
  97                         uchar_t *pageB);
  98
  99 extern int nic_info_get(nic_access_t access,
 100                         nic_data_t data,
 101                         char *info);
 102
 103 extern int nic_item_info_get(char *buf, char *item, char **item_info);
 104
 105 nic_access_f    nic_access_mcr32;
 106
 107 extern char *nic_vertex_info_get(devfs_handle_t v);
 108
 109 extern char *nic_vertex_info_set(nic_access_t access,
 110                                  nic_data_t data,
 111                                  devfs_handle_t v);
 112
 113 extern int nic_vertex_info_match(devfs_handle_t vertex,
 114                                  char *name);
 115
 116 extern char *nic_bridge_vertex_info(devfs_handle_t vertex,
 117                                     nic_data_t  data);
 118 extern char *nic_hq4_vertex_info(devfs_handle_t vertex,
 119                                  nic_data_t data);
 120 extern char *nic_ioc3_vertex_info(devfs_handle_t vertex,
 121                                     nic_data_t  data,
 122                                     int32_t *gpcr_s);
 123
 124 extern char *nic_hub_vertex_info(devfs_handle_t vertex);
 125
 126 extern nic_vmce_t       nic_vmc_add(char *, nic_vmc_func *);
 127 extern void             nic_vmc_del(nic_vmce_t);
 128
 129 #endif /* _ASM_IA64_SN_NIC_H */