sb1250_defs.h
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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 (mpl@broadcom.com)
- *
- *********************************************************************
- *
- * Copyright 2000,2001
- * 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
- ********************************************************************* */
- /* *********************************************************************
- * 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.
- ********************************************************************* */
- #ifndef _SB1250_DEFS_H
- #define _SB1250_DEFS_H
- /*
- * 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(__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