42a3b4f25a
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
242 lines
9 KiB
C
242 lines
9 KiB
C
/* *********************************************************************
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* SB1250 Board Support Package
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*
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* Global constants and macros File: sb1250_defs.h
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*
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* This file contains macros and definitions used by the other
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* include files.
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*
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* SB1250 specification level: User's manual 1/02/02
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*
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* Author: Mitch Lichtenberg
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*
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*********************************************************************
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*
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* Copyright 2000,2001,2002,2003
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* Broadcom Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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********************************************************************* */
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#ifndef _SB1250_DEFS_H
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#define _SB1250_DEFS_H
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/*
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* These headers require ANSI C89 string concatenation, and GCC or other
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* 'long long' (64-bit integer) support.
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*/
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#if !defined(__STDC__) && !defined(_MSC_VER)
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#error SiByte headers require ANSI C89 support
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#endif
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/* *********************************************************************
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* Macros for feature tests, used to enable include file features
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* for chip features only present in certain chip revisions.
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*
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* SIBYTE_HDR_FEATURES may be defined to be the mask value chip/revision
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* which is to be exposed by the headers. If undefined, it defaults to
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* "all features."
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*
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* Use like:
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*
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* #define SIBYTE_HDR_FEATURES SIBYTE_HDR_FMASK_112x_PASS1
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*
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* Generate defines only for that revision of chip.
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*
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* #if SIBYTE_HDR_FEATURE(chip,pass)
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*
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* True if header features for that revision or later of
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* that particular chip type are enabled in SIBYTE_HDR_FEATURES.
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* (Use this to bracket #defines for features present in a given
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* revision and later.)
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*
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* Note that there is no implied ordering between chip types.
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*
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* Note also that 'chip' and 'pass' must textually exactly
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* match the defines below. So, for example,
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* SIBYTE_HDR_FEATURE(112x, PASS1) is OK, but
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* SIBYTE_HDR_FEATURE(1120, pass1) is not (for two reasons).
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*
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* #if SIBYTE_HDR_FEATURE_UP_TO(chip,pass)
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*
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* Same as SIBYTE_HDR_FEATURE, but true for the named revision
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* and earlier revisions of the named chip type.
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*
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* #if SIBYTE_HDR_FEATURE_EXACT(chip,pass)
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*
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* Same as SIBYTE_HDR_FEATURE, but only true for the named
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* revision of the named chip type. (Note that this CANNOT
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* be used to verify that you're compiling only for that
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* particular chip/revision. It will be true any time this
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* chip/revision is included in SIBYTE_HDR_FEATURES.)
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*
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* #if SIBYTE_HDR_FEATURE_CHIP(chip)
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*
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* True if header features for (any revision of) that chip type
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* are enabled in SIBYTE_HDR_FEATURES. (Use this to bracket
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* #defines for features specific to a given chip type.)
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*
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* Mask values currently include room for additional revisions of each
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* chip type, but can be renumbered at will. Note that they MUST fit
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* into 31 bits and may not include C type constructs, for safe use in
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* CPP conditionals. Bit positions within chip types DO indicate
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* ordering, so be careful when adding support for new minor revs.
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********************************************************************* */
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#define SIBYTE_HDR_FMASK_1250_ALL 0x00000ff
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#define SIBYTE_HDR_FMASK_1250_PASS1 0x0000001
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#define SIBYTE_HDR_FMASK_1250_PASS2 0x0000002
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#define SIBYTE_HDR_FMASK_1250_PASS3 0x0000004
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#define SIBYTE_HDR_FMASK_112x_ALL 0x0000f00
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#define SIBYTE_HDR_FMASK_112x_PASS1 0x0000100
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/* Bit mask for chip/revision. (use _ALL for all revisions of a chip). */
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#define SIBYTE_HDR_FMASK(chip, pass) \
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(SIBYTE_HDR_FMASK_ ## chip ## _ ## pass)
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#define SIBYTE_HDR_FMASK_ALLREVS(chip) \
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(SIBYTE_HDR_FMASK_ ## chip ## _ALL)
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#define SIBYTE_HDR_FMASK_ALL \
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(SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL)
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#ifndef SIBYTE_HDR_FEATURES
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#define SIBYTE_HDR_FEATURES SIBYTE_HDR_FMASK_ALL
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#endif
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/* Bit mask for revisions of chip exclusively before the named revision. */
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#define SIBYTE_HDR_FMASK_BEFORE(chip, pass) \
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((SIBYTE_HDR_FMASK(chip, pass) - 1) & SIBYTE_HDR_FMASK_ALLREVS(chip))
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/* Bit mask for revisions of chip exclusively after the named revision. */
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#define SIBYTE_HDR_FMASK_AFTER(chip, pass) \
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(~(SIBYTE_HDR_FMASK(chip, pass) \
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| (SIBYTE_HDR_FMASK(chip, pass) - 1)) & SIBYTE_HDR_FMASK_ALLREVS(chip))
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/* True if header features enabled for (any revision of) that chip type. */
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#define SIBYTE_HDR_FEATURE_CHIP(chip) \
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(!! (SIBYTE_HDR_FMASK_ALLREVS(chip) & SIBYTE_HDR_FEATURES))
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/* True if header features enabled for that rev or later, inclusive. */
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#define SIBYTE_HDR_FEATURE(chip, pass) \
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(!! ((SIBYTE_HDR_FMASK(chip, pass) \
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| SIBYTE_HDR_FMASK_AFTER(chip, pass)) & SIBYTE_HDR_FEATURES))
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/* True if header features enabled for exactly that rev. */
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#define SIBYTE_HDR_FEATURE_EXACT(chip, pass) \
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(!! (SIBYTE_HDR_FMASK(chip, pass) & SIBYTE_HDR_FEATURES))
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/* True if header features enabled for that rev or before, inclusive. */
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#define SIBYTE_HDR_FEATURE_UP_TO(chip, pass) \
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(!! ((SIBYTE_HDR_FMASK(chip, pass) \
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| SIBYTE_HDR_FMASK_BEFORE(chip, pass)) & SIBYTE_HDR_FEATURES))
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/* *********************************************************************
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* Naming schemes for constants in these files:
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*
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* M_xxx MASK constant (identifies bits in a register).
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* For multi-bit fields, all bits in the field will
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* be set.
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*
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* K_xxx "Code" constant (value for data in a multi-bit
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* field). The value is right justified.
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*
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* V_xxx "Value" constant. This is the same as the
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* corresponding "K_xxx" constant, except it is
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* shifted to the correct position in the register.
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*
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* S_xxx SHIFT constant. This is the number of bits that
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* a field value (code) needs to be shifted
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* (towards the left) to put the value in the right
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* position for the register.
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*
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* A_xxx ADDRESS constant. This will be a physical
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* address. Use the PHYS_TO_K1 macro to generate
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* a K1SEG address.
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*
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* R_xxx RELATIVE offset constant. This is an offset from
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* an A_xxx constant (usually the first register in
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* a group).
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*
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* G_xxx(X) GET value. This macro obtains a multi-bit field
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* from a register, masks it, and shifts it to
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* the bottom of the register (retrieving a K_xxx
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* value, for example).
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*
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* V_xxx(X) VALUE. This macro computes the value of a
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* K_xxx constant shifted to the correct position
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* in the register.
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********************************************************************* */
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/*
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* Cast to 64-bit number. Presumably the syntax is different in
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* assembly language.
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*
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* Note: you'll need to define uint32_t and uint64_t in your headers.
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*/
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#if !defined(__ASSEMBLER__)
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#define _SB_MAKE64(x) ((uint64_t)(x))
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#define _SB_MAKE32(x) ((uint32_t)(x))
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#else
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#define _SB_MAKE64(x) (x)
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#define _SB_MAKE32(x) (x)
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#endif
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/*
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* Make a mask for 1 bit at position 'n'
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*/
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#define _SB_MAKEMASK1(n) (_SB_MAKE64(1) << _SB_MAKE64(n))
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#define _SB_MAKEMASK1_32(n) (_SB_MAKE32(1) << _SB_MAKE32(n))
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/*
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* Make a mask for 'v' bits at position 'n'
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*/
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#define _SB_MAKEMASK(v,n) (_SB_MAKE64((_SB_MAKE64(1)<<(v))-1) << _SB_MAKE64(n))
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#define _SB_MAKEMASK_32(v,n) (_SB_MAKE32((_SB_MAKE32(1)<<(v))-1) << _SB_MAKE32(n))
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/*
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* Make a value at 'v' at bit position 'n'
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*/
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#define _SB_MAKEVALUE(v,n) (_SB_MAKE64(v) << _SB_MAKE64(n))
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#define _SB_MAKEVALUE_32(v,n) (_SB_MAKE32(v) << _SB_MAKE32(n))
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#define _SB_GETVALUE(v,n,m) ((_SB_MAKE64(v) & _SB_MAKE64(m)) >> _SB_MAKE64(n))
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#define _SB_GETVALUE_32(v,n,m) ((_SB_MAKE32(v) & _SB_MAKE32(m)) >> _SB_MAKE32(n))
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/*
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* Macros to read/write on-chip registers
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* XXX should we do the PHYS_TO_K1 here?
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*/
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#if defined(__mips64) && !defined(__ASSEMBLER__)
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#define SBWRITECSR(csr,val) *((volatile uint64_t *) PHYS_TO_K1(csr)) = (val)
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#define SBREADCSR(csr) (*((volatile uint64_t *) PHYS_TO_K1(csr)))
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#endif /* __ASSEMBLER__ */
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#endif
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