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/*  *********************************************************************

    *  SB1250 Board Support Package

    *

    *  Global constants and macros              File: sb1250_defs.h

    *

    *  This file contains macros and definitions used by the other

    *  include files.

    *

    *  SB1250 specification level:  User's manual 1/02/02

    *

    *  Author:  Mitch Lichtenberg

    *

    *********************************************************************

    *

    *  Copyright 2000,2001,2002,2003

    *  Broadcom Corporation. All rights reserved.

    *

    *  This program is free software; you can redistribute it and/or

    *  modify it under the terms of the GNU General Public License as

    *  published by the Free Software Foundation; either version 2 of

    *  the License, or (at your option) any later version.

    *

    *  This program is distributed in the hope that it will be useful,

    *  but WITHOUT ANY WARRANTY; without even the implied warranty of

    *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    *  GNU General Public License for more details.

    *

    *  You should have received a copy of the GNU General Public License

    *  along with this program; if not, write to the Free Software

    *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,

    *  MA 02111-1307 USA

    ********************************************************************* */

#ifndef _SB1250_DEFS_H

#define _SB1250_DEFS_H

/*

 * These headers require ANSI C89 string concatenation, and GCC or other

 * 'long long' (64-bit integer) support.

 */

#if !defined(__STDC__) && !defined(_MSC_VER)

#error SiByte headers require ANSI C89 support

#endif

/*  *********************************************************************

    *  Macros for feature tests, used to enable include file features

    *  for chip features only present in certain chip revisions.

    *

    *  SIBYTE_HDR_FEATURES may be defined to be the mask value chip/revision

    *  which is to be exposed by the headers.  If undefined, it defaults to

    *  "all features."

    *

    *  Use like:

    *

    *    #define SIBYTE_HDR_FEATURES    SIBYTE_HDR_FMASK_112x_PASS1

    *

    *           Generate defines only for that revision of chip.

    *

    *    #if SIBYTE_HDR_FEATURE(chip,pass)

    *

    *           True if header features for that revision or later of

    *           that particular chip type are enabled in SIBYTE_HDR_FEATURES.

    *           (Use this to bracket #defines for features present in a given

    *           revision and later.)

    *

    *           Note that there is no implied ordering between chip types.

    *

    *           Note also that 'chip' and 'pass' must textually exactly

    *           match the defines below.  So, for example,

    *           SIBYTE_HDR_FEATURE(112x, PASS1) is OK, but

    *           SIBYTE_HDR_FEATURE(1120, pass1) is not (for two reasons).

    *

    *    #if SIBYTE_HDR_FEATURE_UP_TO(chip,pass)

    *

    *           Same as SIBYTE_HDR_FEATURE, but true for the named revision

    *           and earlier revisions of the named chip type.

    *

    *    #if SIBYTE_HDR_FEATURE_EXACT(chip,pass)

    *

    *           Same as SIBYTE_HDR_FEATURE, but only true for the named

    *           revision of the named chip type.  (Note that this CANNOT

    *           be used to verify that you're compiling only for that

    *           particular chip/revision.  It will be true any time this

    *           chip/revision is included in SIBYTE_HDR_FEATURES.)

    *

    *    #if SIBYTE_HDR_FEATURE_CHIP(chip)

    *

    *           True if header features for (any revision of) that chip type

    *           are enabled in SIBYTE_HDR_FEATURES.  (Use this to bracket

    *           #defines for features specific to a given chip type.)

    *

    *  Mask values currently include room for additional revisions of each

    *  chip type, but can be renumbered at will.  Note that they MUST fit

    *  into 31 bits and may not include C type constructs, for safe use in

    *  CPP conditionals.  Bit positions within chip types DO indicate

    *  ordering, so be careful when adding support for new minor revs.

    ********************************************************************* */

#define SIBYTE_HDR_FMASK_1250_ALL               0x00000ff

#define SIBYTE_HDR_FMASK_1250_PASS1             0x0000001

#define SIBYTE_HDR_FMASK_1250_PASS2             0x0000002

#define SIBYTE_HDR_FMASK_1250_PASS3             0x0000004

#define SIBYTE_HDR_FMASK_112x_ALL               0x0000f00

#define SIBYTE_HDR_FMASK_112x_PASS1             0x0000100

/* Bit mask for chip/revision.  (use _ALL for all revisions of a chip).  */

#define SIBYTE_HDR_FMASK(chip, pass)                                    \

    (SIBYTE_HDR_FMASK_ ## chip ## _ ## pass)

#define SIBYTE_HDR_FMASK_ALLREVS(chip)                                  \

    (SIBYTE_HDR_FMASK_ ## chip ## _ALL)

#define SIBYTE_HDR_FMASK_ALL                                            \

    (SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL)

#ifndef SIBYTE_HDR_FEATURES

#define SIBYTE_HDR_FEATURES                     SIBYTE_HDR_FMASK_ALL

#endif

/* Bit mask for revisions of chip exclusively before the named revision.  */

#define SIBYTE_HDR_FMASK_BEFORE(chip, pass)                             \

    ((SIBYTE_HDR_FMASK(chip, pass) - 1) & SIBYTE_HDR_FMASK_ALLREVS(chip))

/* Bit mask for revisions of chip exclusively after the named revision.  */

#define SIBYTE_HDR_FMASK_AFTER(chip, pass)                              \

    (~(SIBYTE_HDR_FMASK(chip, pass)                                     \

     | (SIBYTE_HDR_FMASK(chip, pass) - 1)) & SIBYTE_HDR_FMASK_ALLREVS(chip))

/* True if header features enabled for (any revision of) that chip type.  */

#define SIBYTE_HDR_FEATURE_CHIP(chip)                                   \

    (!! (SIBYTE_HDR_FMASK_ALLREVS(chip) & SIBYTE_HDR_FEATURES))

/* True if header features enabled for that rev or later, inclusive.  */

#define SIBYTE_HDR_FEATURE(chip, pass)                                  \

    (!! ((SIBYTE_HDR_FMASK(chip, pass)                                  \

          | SIBYTE_HDR_FMASK_AFTER(chip, pass)) & SIBYTE_HDR_FEATURES))

/* True if header features enabled for exactly that rev.  */

#define SIBYTE_HDR_FEATURE_EXACT(chip, pass)                            \

    (!! (SIBYTE_HDR_FMASK(chip, pass) & SIBYTE_HDR_FEATURES))

/* True if header features enabled for that rev or before, inclusive.  */

#define SIBYTE_HDR_FEATURE_UP_TO(chip, pass)                            \

    (!! ((SIBYTE_HDR_FMASK(chip, pass)                                  \

         | SIBYTE_HDR_FMASK_BEFORE(chip, pass)) & SIBYTE_HDR_FEATURES))

/*  *********************************************************************

    *  Naming schemes for constants in these files:

    *

    *  M_xxx           MASK constant (identifies bits in a register).

    *                  For multi-bit fields, all bits in the field will

    *                  be set.

    *

    *  K_xxx           "Code" constant (value for data in a multi-bit

    *                  field).  The value is right justified.

    *

    *  V_xxx           "Value" constant.  This is the same as the

    *                  corresponding "K_xxx" constant, except it is

    *                  shifted to the correct position in the register.

    *

    *  S_xxx           SHIFT constant.  This is the number of bits that

    *                  a field value (code) needs to be shifted

    *                  (towards the left) to put the value in the right

    *                  position for the register.

    *

    *  A_xxx           ADDRESS constant.  This will be a physical

    *                  address.  Use the PHYS_TO_K1 macro to generate

    *                  a K1SEG address.

    *

    *  R_xxx           RELATIVE offset constant.  This is an offset from

    *                  an A_xxx constant (usually the first register in

    *                  a group).

    *

    *  G_xxx(X)        GET value.  This macro obtains a multi-bit field

    *                  from a register, masks it, and shifts it to

    *                  the bottom of the register (retrieving a K_xxx

    *                  value, for example).

    *

    *  V_xxx(X)        VALUE.  This macro computes the value of a

    *                  K_xxx constant shifted to the correct position

    *                  in the register.

    ********************************************************************* */

/*

 * Cast to 64-bit number.  Presumably the syntax is different in

 * assembly language.

 *

 * Note: you'll need to define uint32_t and uint64_t in your headers.

 */

#if !defined(__ASSEMBLER__)

#define _SB_MAKE64(x) ((uint64_t)(x))

#define _SB_MAKE32(x) ((uint32_t)(x))

#else

#define _SB_MAKE64(x) (x)

#define _SB_MAKE32(x) (x)

#endif

/*

 * Make a mask for 1 bit at position 'n'

 */

#define _SB_MAKEMASK1(n) (_SB_MAKE64(1) << _SB_MAKE64(n))

#define _SB_MAKEMASK1_32(n) (_SB_MAKE32(1) << _SB_MAKE32(n))

/*

 * Make a mask for 'v' bits at position 'n'

 */

#define _SB_MAKEMASK(v,n) (_SB_MAKE64((_SB_MAKE64(1)<<(v))-1) << _SB_MAKE64(n))

#define _SB_MAKEMASK_32(v,n) (_SB_MAKE32((_SB_MAKE32(1)<<(v))-1) << _SB_MAKE32(n))

/*

 * Make a value at 'v' at bit position 'n'

 */

#define _SB_MAKEVALUE(v,n) (_SB_MAKE64(v) << _SB_MAKE64(n))

#define _SB_MAKEVALUE_32(v,n) (_SB_MAKE32(v) << _SB_MAKE32(n))

#define _SB_GETVALUE(v,n,m) ((_SB_MAKE64(v) & _SB_MAKE64(m)) >> _SB_MAKE64(n))

#define _SB_GETVALUE_32(v,n,m) ((_SB_MAKE32(v) & _SB_MAKE32(m)) >> _SB_MAKE32(n))

/*

 * Macros to read/write on-chip registers

 * XXX should we do the PHYS_TO_K1 here?

 */

#if defined(__mips64) && !defined(__ASSEMBLER__)

#define SBWRITECSR(csr,val) *((volatile uint64_t *) PHYS_TO_K1(csr)) = (val)

#define SBREADCSR(csr) (*((volatile uint64_t *) PHYS_TO_K1(csr)))

#endif /* __ASSEMBLER__ */

#endif