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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* *********************************************************************
* 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
*
*********************************************************************
*
* Copyright 2000,2001,2002,2003
* Broadcom Corporation. All rights reserved.
*
********************************************************************* */
#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 0x000000ff
#define SIBYTE_HDR_FMASK_1250_PASS1 0x00000001
#define SIBYTE_HDR_FMASK_1250_PASS2 0x00000002
#define SIBYTE_HDR_FMASK_1250_PASS3 0x00000004
#define SIBYTE_HDR_FMASK_112x_ALL 0x00000f00
#define SIBYTE_HDR_FMASK_112x_PASS1 0x00000100
#define SIBYTE_HDR_FMASK_1480_ALL 0x0000f000
#define SIBYTE_HDR_FMASK_1480_PASS1 0x00001000
#define SIBYTE_HDR_FMASK_1480_PASS2 0x00002000
/* 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)
/* Default constant value for all chips, all revisions */
#define SIBYTE_HDR_FMASK_ALL \
(SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL \
| SIBYTE_HDR_FMASK_1480_ALL)
/* This one is used for the "original" BCM1250/BCM112x chips. We use this
to weed out constants and macros that do not exist on later chips like
the BCM1480 */
#define SIBYTE_HDR_FMASK_1250_112x_ALL \
(SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL)
#define SIBYTE_HDR_FMASK_1250_112x SIBYTE_HDR_FMASK_1250_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 for all versions of the BCM1250 and BCM1125, but not true for
anything else */
#define SIBYTE_HDR_FEATURE_1250_112x \
(SIBYTE_HDR_FEATURE_CHIP(1250) || SIBYTE_HDR_FEATURE_CHIP(112x))
/* (!! (SIBYTE_HDR_FEATURES & SIBYHTE_HDR_FMASK_1250_112x)) */
/* 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(__ASSEMBLY__)
#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(__ASSEMBLY__)
#define SBWRITECSR(csr, val) *((volatile uint64_t *) PHYS_TO_K1(csr)) = (val)
#define SBREADCSR(csr) (*((volatile uint64_t *) PHYS_TO_K1(csr)))
#endif /* __ASSEMBLY__ */
#endif
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