2025-06-27 00:32:57 +08:00
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/*
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* File : mips_addrspace.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2008 - 2012, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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2025-07-05 19:47:28 +08:00
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* 2016<EFBFBD><EFBFBD>9<EFBFBD><EFBFBD>12<EFBFBD><EFBFBD> Urey the first version
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2025-06-27 00:32:57 +08:00
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*/
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#ifndef _MIPS_ADDRSPACE_H_
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#define _MIPS_ADDRSPACE_H_
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/*
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* Configure language
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*/
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#ifdef __ASSEMBLY__
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#define _ATYPE_
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#define _ATYPE32_
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#define _ATYPE64_
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#define _CONST64_(x) x
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#else
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#define _ATYPE_ __PTRDIFF_TYPE__
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#define _ATYPE32_ int
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#define _ATYPE64_ __s64
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#ifdef CONFIG_64BIT
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#define _CONST64_(x) x ## L
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#else
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#define _CONST64_(x) x ## LL
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#endif
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#endif
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/*
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* 32-bit MIPS address spaces
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*/
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#ifdef __ASSEMBLY__
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#define _ACAST32_
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#define _ACAST64_
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#else
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#define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */
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#define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */
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#endif
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/*
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* Returns the kernel segment base of a given address
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*/
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#define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000)
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/*
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* Returns the physical address of a CKSEGx / XKPHYS address
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*/
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#define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff)
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#define XPHYSADDR(a) ((_ACAST64_(a)) & \
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_CONST64_(0x000000ffffffffff))
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#ifdef CONFIG_64BIT
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/*
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* Memory segments (64bit kernel mode addresses)
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* The compatibility segments use the full 64-bit sign extended value. Note
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* the R8000 doesn't have them so don't reference these in generic MIPS code.
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*/
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#define XKUSEG _CONST64_(0x0000000000000000)
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#define XKSSEG _CONST64_(0x4000000000000000)
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#define XKPHYS _CONST64_(0x8000000000000000)
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#define XKSEG _CONST64_(0xc000000000000000)
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#define CKSEG0 _CONST64_(0xffffffff80000000)
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#define CKSEG1 _CONST64_(0xffffffffa0000000)
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#define CKSSEG _CONST64_(0xffffffffc0000000)
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#define CKSEG3 _CONST64_(0xffffffffe0000000)
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#define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0)
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#define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1)
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#define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2)
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#define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3)
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#else
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#define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0BASE)
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#define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1BASE)
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#define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2BASE)
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#define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3BASE)
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/*
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* Map an address to a certain kernel segment
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*/
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#define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0BASE)
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#define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1BASE)
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#define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2BASE)
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#define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3BASE)
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/*
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* Memory segments (32bit kernel mode addresses)
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* These are the traditional names used in the 32-bit universe.
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*/
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//#define KUSEGBASE 0x00000000
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//#define KSEG0BASE 0x80000000
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//#define KSEG1BASE 0xa0000000
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//#define KSEG2BASE 0xc0000000
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//#define KSEG3BASE 0xe0000000
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#define CKUSEG 0x00000000
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#define CKSEG0 0x80000000
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#define CKSEG1 0xa0000000
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#define CKSEG2 0xc0000000
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#define CKSEG3 0xe0000000
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#endif
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/*
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* Cache modes for XKPHYS address conversion macros
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*/
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#define K_CALG_COH_EXCL1_NOL2 0
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#define K_CALG_COH_SHRL1_NOL2 1
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#define K_CALG_UNCACHED 2
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#define K_CALG_NONCOHERENT 3
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#define K_CALG_COH_EXCL 4
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#define K_CALG_COH_SHAREABLE 5
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#define K_CALG_NOTUSED 6
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#define K_CALG_UNCACHED_ACCEL 7
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/*
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* 64-bit address conversions
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*/
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#define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED, (p))
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#define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE, (p))
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#define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK)
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#define PHYS_TO_XKPHYS(cm, a) (_CONST64_(0x8000000000000000) | \
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(_CONST64_(cm) << 59) | (a))
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/*
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* Returns the uncached address of a sdram address
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*/
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#ifndef __ASSEMBLY__
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#if defined(CONFIG_SOC_AU1X00) || defined(CONFIG_TB0229)
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/* We use a 36 bit physical address map here and
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cannot access physical memory directly from core */
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#define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000)
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#else /* !CONFIG_SOC_AU1X00 */
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#define UNCACHED_SDRAM(a) CKSEG1ADDR(a)
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#endif /* CONFIG_SOC_AU1X00 */
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#endif /* __ASSEMBLY__ */
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/*
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* The ultimate limited of the 64-bit MIPS architecture: 2 bits for selecting
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* the region, 3 bits for the CCA mode. This leaves 59 bits of which the
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* R8000 implements most with its 48-bit physical address space.
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*/
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#define TO_PHYS_MASK _CONST64_(0x07ffffffffffffff) /* 2^^59 - 1 */
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#ifndef CONFIG_CPU_R8000
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/*
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* The R8000 doesn't have the 32-bit compat spaces so we don't define them
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* in order to catch bugs in the source code.
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*/
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#define COMPAT_K1BASE32 _CONST64_(0xffffffffa0000000)
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#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
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#endif
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#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK)
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#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE)
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#ifndef __ASSEMBLY__
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/*
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* Change virtual addresses to physical addresses and vv.
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* These are trivial on the 1:1 Linux/MIPS mapping
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*/
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static inline phys_addr_t virt_to_phys(volatile void * address)
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{
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#ifndef CONFIG_64BIT
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return CPHYSADDR(address);
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#else
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return XPHYSADDR(address);
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#endif
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}
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static inline void * phys_to_virt(unsigned long address)
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{
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#ifndef CONFIG_64BIT
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return (void *)KSEG0ADDR(address);
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#else
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return (void *)CKSEG0ADDR(address);
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#endif
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}
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#endif
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#endif /* _MIPS_ADDRSPACE_H_ */
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