include/asm-mips/sibyte/sb1250_defs.h

   1 /*  *********************************************************************
   2     *  SB1250 Board Support Package
   3     *
   4     *  Global constants and macros              File: sb1250_defs.h
   5     *
   6     *  This file contains macros and definitions used by the other
   7     *  include files.
   8     *
   9     *  SB1250 specification level:  User's manual 1/02/02
  10     *
  11     *********************************************************************
  12     *
  13     *  Copyright 2000,2001,2002,2003
  14     *  Broadcom Corporation. All rights reserved.
  15     *
  16     *  This program is free software; you can redistribute it and/or
  17     *  modify it under the terms of the GNU General Public License as
  18     *  published by the Free Software Foundation; either version 2 of
  19     *  the License, or (at your option) any later version.
  20     *
  21     *  This program is distributed in the hope that it will be useful,
  22     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  23     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24     *  GNU General Public License for more details.
  25     *
  26     *  You should have received a copy of the GNU General Public License
  27     *  along with this program; if not, write to the Free Software
  28     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29     *  MA 02111-1307 USA
  30     ********************************************************************* */
  31
  32 #ifndef _SB1250_DEFS_H
  33 #define _SB1250_DEFS_H
  34
  35 /*
  36  * These headers require ANSI C89 string concatenation, and GCC or other
  37  * 'long long' (64-bit integer) support.
  38  */
  39 #if !defined(__STDC__) && !defined(_MSC_VER)
  40 #error SiByte headers require ANSI C89 support
  41 #endif
  42
  43
  44 /*  *********************************************************************
  45     *  Macros for feature tests, used to enable include file features
  46     *  for chip features only present in certain chip revisions.
  47     *
  48     *  SIBYTE_HDR_FEATURES may be defined to be the mask value chip/revision
  49     *  which is to be exposed by the headers.  If undefined, it defaults to
  50     *  "all features."
  51     *
  52     *  Use like:
  53     *
  54     *    #define SIBYTE_HDR_FEATURES    SIBYTE_HDR_FMASK_112x_PASS1
  55     *
  56     *           Generate defines only for that revision of chip.
  57     *
  58     *    #if SIBYTE_HDR_FEATURE(chip,pass)
  59     *
  60     *           True if header features for that revision or later of
  61     *           that particular chip type are enabled in SIBYTE_HDR_FEATURES.
  62     *           (Use this to bracket #defines for features present in a given
  63     *           revision and later.)
  64     *
  65     *           Note that there is no implied ordering between chip types.
  66     *
  67     *           Note also that 'chip' and 'pass' must textually exactly
  68     *           match the defines below.  So, for example,
  69     *           SIBYTE_HDR_FEATURE(112x, PASS1) is OK, but
  70     *           SIBYTE_HDR_FEATURE(1120, pass1) is not (for two reasons).
  71     *
  72     *    #if SIBYTE_HDR_FEATURE_UP_TO(chip,pass)
  73     *
  74     *           Same as SIBYTE_HDR_FEATURE, but true for the named revision
  75     *           and earlier revisions of the named chip type.
  76     *
  77     *    #if SIBYTE_HDR_FEATURE_EXACT(chip,pass)
  78     *
  79     *           Same as SIBYTE_HDR_FEATURE, but only true for the named
  80     *           revision of the named chip type.  (Note that this CANNOT
  81     *           be used to verify that you're compiling only for that
  82     *           particular chip/revision.  It will be true any time this
  83     *           chip/revision is included in SIBYTE_HDR_FEATURES.)
  84     *
  85     *    #if SIBYTE_HDR_FEATURE_CHIP(chip)
  86     *
  87     *           True if header features for (any revision of) that chip type
  88     *           are enabled in SIBYTE_HDR_FEATURES.  (Use this to bracket
  89     *           #defines for features specific to a given chip type.)
  90     *
  91     *  Mask values currently include room for additional revisions of each
  92     *  chip type, but can be renumbered at will.  Note that they MUST fit
  93     *  into 31 bits and may not include C type constructs, for safe use in
  94     *  CPP conditionals.  Bit positions within chip types DO indicate
  95     *  ordering, so be careful when adding support for new minor revs.
  96     ********************************************************************* */
  97
  98 #define SIBYTE_HDR_FMASK_1250_ALL               0x000000ff
  99 #define SIBYTE_HDR_FMASK_1250_PASS1             0x00000001
 100 #define SIBYTE_HDR_FMASK_1250_PASS2             0x00000002
 101 #define SIBYTE_HDR_FMASK_1250_PASS3             0x00000004
 102
 103 #define SIBYTE_HDR_FMASK_112x_ALL               0x00000f00
 104 #define SIBYTE_HDR_FMASK_112x_PASS1             0x00000100
 105
 106 #define SIBYTE_HDR_FMASK_1480_ALL               0x0000f000
 107 #define SIBYTE_HDR_FMASK_1480_PASS1             0x00001000
 108 #define SIBYTE_HDR_FMASK_1480_PASS2             0x00002000
 109
 110 /* Bit mask for chip/revision.  (use _ALL for all revisions of a chip).  */
 111 #define SIBYTE_HDR_FMASK(chip, pass)                                    \
 112     (SIBYTE_HDR_FMASK_ ## chip ## _ ## pass)
 113 #define SIBYTE_HDR_FMASK_ALLREVS(chip)                                  \
 114     (SIBYTE_HDR_FMASK_ ## chip ## _ALL)
 115
 116 /* Default constant value for all chips, all revisions */
 117 #define SIBYTE_HDR_FMASK_ALL                                            \
 118     (SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL              \
 119      | SIBYTE_HDR_FMASK_1480_ALL)
 120
 121 /* This one is used for the "original" BCM1250/BCM112x chips.  We use this
 122    to weed out constants and macros that do not exist on later chips like
 123    the BCM1480  */
 124 #define SIBYTE_HDR_FMASK_1250_112x_ALL                                  \
 125     (SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL)
 126 #define SIBYTE_HDR_FMASK_1250_112x SIBYTE_HDR_FMASK_1250_112x_ALL
 127
 128 #ifndef SIBYTE_HDR_FEATURES
 129 #define SIBYTE_HDR_FEATURES                     SIBYTE_HDR_FMASK_ALL
 130 #endif
 131
 132
 133 /* Bit mask for revisions of chip exclusively before the named revision.  */
 134 #define SIBYTE_HDR_FMASK_BEFORE(chip, pass)                             \
 135     ((SIBYTE_HDR_FMASK(chip, pass) - 1) & SIBYTE_HDR_FMASK_ALLREVS(chip))
 136
 137 /* Bit mask for revisions of chip exclusively after the named revision.  */
 138 #define SIBYTE_HDR_FMASK_AFTER(chip, pass)                              \
 139     (~(SIBYTE_HDR_FMASK(chip, pass)                                     \
 140      | (SIBYTE_HDR_FMASK(chip, pass) - 1)) & SIBYTE_HDR_FMASK_ALLREVS(chip))
 141
 142
 143 /* True if header features enabled for (any revision of) that chip type.  */
 144 #define SIBYTE_HDR_FEATURE_CHIP(chip)                                   \
 145     (!! (SIBYTE_HDR_FMASK_ALLREVS(chip) & SIBYTE_HDR_FEATURES))
 146
 147 /* True for all versions of the BCM1250 and BCM1125, but not true for
 148    anything else */
 149 #define SIBYTE_HDR_FEATURE_1250_112x \
 150       (SIBYTE_HDR_FEATURE_CHIP(1250) || SIBYTE_HDR_FEATURE_CHIP(112x))
 151 /*    (!!  (SIBYTE_HDR_FEATURES & SIBYHTE_HDR_FMASK_1250_112x)) */
 152
 153 /* True if header features enabled for that rev or later, inclusive.  */
 154 #define SIBYTE_HDR_FEATURE(chip, pass)                                  \
 155     (!! ((SIBYTE_HDR_FMASK(chip, pass)                                  \
 156           | SIBYTE_HDR_FMASK_AFTER(chip, pass)) & SIBYTE_HDR_FEATURES))
 157
 158 /* True if header features enabled for exactly that rev.  */
 159 #define SIBYTE_HDR_FEATURE_EXACT(chip, pass)                            \
 160     (!! (SIBYTE_HDR_FMASK(chip, pass) & SIBYTE_HDR_FEATURES))
 161
 162 /* True if header features enabled for that rev or before, inclusive.  */
 163 #define SIBYTE_HDR_FEATURE_UP_TO(chip, pass)                            \
 164     (!! ((SIBYTE_HDR_FMASK(chip, pass)                                  \
 165          | SIBYTE_HDR_FMASK_BEFORE(chip, pass)) & SIBYTE_HDR_FEATURES))
 166
 167
 168 /*  *********************************************************************
 169     *  Naming schemes for constants in these files:
 170     *
 171     *  M_xxx           MASK constant (identifies bits in a register).
 172     *                  For multi-bit fields, all bits in the field will
 173     *                  be set.
 174     *
 175     *  K_xxx           "Code" constant (value for data in a multi-bit
 176     *                  field).  The value is right justified.
 177     *
 178     *  V_xxx           "Value" constant.  This is the same as the
 179     *                  corresponding "K_xxx" constant, except it is
 180     *                  shifted to the correct position in the register.
 181     *
 182     *  S_xxx           SHIFT constant.  This is the number of bits that
 183     *                  a field value (code) needs to be shifted
 184     *                  (towards the left) to put the value in the right
 185     *                  position for the register.
 186     *
 187     *  A_xxx           ADDRESS constant.  This will be a physical
 188     *                  address.  Use the PHYS_TO_K1 macro to generate
 189     *                  a K1SEG address.
 190     *
 191     *  R_xxx           RELATIVE offset constant.  This is an offset from
 192     *                  an A_xxx constant (usually the first register in
 193     *                  a group).
 194     *
 195     *  G_xxx(X)        GET value.  This macro obtains a multi-bit field
 196     *                  from a register, masks it, and shifts it to
 197     *                  the bottom of the register (retrieving a K_xxx
 198     *                  value, for example).
 199     *
 200     *  V_xxx(X)        VALUE.  This macro computes the value of a
 201     *                  K_xxx constant shifted to the correct position
 202     *                  in the register.
 203     ********************************************************************* */
 204
 205
 206
 207
 208 /*
 209  * Cast to 64-bit number.  Presumably the syntax is different in
 210  * assembly language.
 211  *
 212  * Note: you'll need to define uint32_t and uint64_t in your headers.
 213  */
 214
 215 #if !defined(__ASSEMBLER__)
 216 #define _SB_MAKE64(x) ((uint64_t)(x))
 217 #define _SB_MAKE32(x) ((uint32_t)(x))
 218 #else
 219 #define _SB_MAKE64(x) (x)
 220 #define _SB_MAKE32(x) (x)
 221 #endif
 222
 223
 224 /*
 225  * Make a mask for 1 bit at position 'n'
 226  */
 227
 228 #define _SB_MAKEMASK1(n) (_SB_MAKE64(1) << _SB_MAKE64(n))
 229 #define _SB_MAKEMASK1_32(n) (_SB_MAKE32(1) << _SB_MAKE32(n))
 230
 231 /*
 232  * Make a mask for 'v' bits at position 'n'
 233  */
 234
 235 #define _SB_MAKEMASK(v,n) (_SB_MAKE64((_SB_MAKE64(1)<<(v))-1) << _SB_MAKE64(n))
 236 #define _SB_MAKEMASK_32(v,n) (_SB_MAKE32((_SB_MAKE32(1)<<(v))-1) << _SB_MAKE32(n))
 237
 238 /*
 239  * Make a value at 'v' at bit position 'n'
 240  */
 241
 242 #define _SB_MAKEVALUE(v,n) (_SB_MAKE64(v) << _SB_MAKE64(n))
 243 #define _SB_MAKEVALUE_32(v,n) (_SB_MAKE32(v) << _SB_MAKE32(n))
 244
 245 #define _SB_GETVALUE(v,n,m) ((_SB_MAKE64(v) & _SB_MAKE64(m)) >> _SB_MAKE64(n))
 246 #define _SB_GETVALUE_32(v,n,m) ((_SB_MAKE32(v) & _SB_MAKE32(m)) >> _SB_MAKE32(n))
 247
 248 /*
 249  * Macros to read/write on-chip registers
 250  * XXX should we do the PHYS_TO_K1 here?
 251  */
 252
 253
 254 #if defined(__mips64) && !defined(__ASSEMBLER__)
 255 #define SBWRITECSR(csr,val) *((volatile uint64_t *) PHYS_TO_K1(csr)) = (val)
 256 #define SBREADCSR(csr) (*((volatile uint64_t *) PHYS_TO_K1(csr)))
 257 #endif /* __ASSEMBLER__ */
 258
 259 #endif