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      1 /* SPDX-License-Identifier: GPL-2.0+ */
      2 /*
      3  * Copyright (c) 2011 The Chromium OS Authors.
      4  */
      5 
      6 #ifndef __SANDBOX_ASM_IO_H
      7 #define __SANDBOX_ASM_IO_H
      8 
      9 void *phys_to_virt(phys_addr_t paddr);
     10 #define phys_to_virt phys_to_virt
     11 
     12 phys_addr_t virt_to_phys(void *vaddr);
     13 #define virt_to_phys virt_to_phys
     14 
     15 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
     16 #define map_physmem map_physmem
     17 
     18 /*
     19  * Take down a mapping set up by map_physmem().
     20  */
     21 void unmap_physmem(const void *vaddr, unsigned long flags);
     22 #define unmap_physmem unmap_physmem
     23 
     24 #include <asm-generic/io.h>
     25 
     26 /* For sandbox, we want addresses to point into our RAM buffer */
     27 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
     28 {
     29 	return map_physmem(paddr, len, MAP_WRBACK);
     30 }
     31 
     32 /* Remove a previous mapping */
     33 static inline void unmap_sysmem(const void *vaddr)
     34 {
     35 	unmap_physmem(vaddr, MAP_WRBACK);
     36 }
     37 
     38 /* Map from a pointer to our RAM buffer */
     39 phys_addr_t map_to_sysmem(const void *ptr);
     40 
     41 /* Define nops for sandbox I/O access */
     42 #define readb(addr) ((void)addr, 0)
     43 #define readw(addr) ((void)addr, 0)
     44 #define readl(addr) ((void)addr, 0)
     45 #ifdef CONFIG_SANDBOX64
     46 #define readq(addr) ((void)addr, 0)
     47 #endif
     48 #define writeb(v, addr) ((void)addr)
     49 #define writew(v, addr) ((void)addr)
     50 #define writel(v, addr) ((void)addr)
     51 #ifdef CONFIG_SANDBOX64
     52 #define writeq(v, addr) ((void)addr)
     53 #endif
     54 
     55 /*
     56  * Clear and set bits in one shot. These macros can be used to clear and
     57  * set multiple bits in a register using a single call. These macros can
     58  * also be used to set a multiple-bit bit pattern using a mask, by
     59  * specifying the mask in the 'clear' parameter and the new bit pattern
     60  * in the 'set' parameter.
     61  */
     62 
     63 #define out_arch(type,endian,a,v)	write##type(cpu_to_##endian(v),a)
     64 #define in_arch(type,endian,a)		endian##_to_cpu(read##type(a))
     65 
     66 #define out_le64(a,v)	out_arch(q,le64,a,v)
     67 #define out_le32(a,v)	out_arch(l,le32,a,v)
     68 #define out_le16(a,v)	out_arch(w,le16,a,v)
     69 
     70 #define in_le64(a)	in_arch(q,le64,a)
     71 #define in_le32(a)	in_arch(l,le32,a)
     72 #define in_le16(a)	in_arch(w,le16,a)
     73 
     74 #define out_be32(a,v)	out_arch(l,be32,a,v)
     75 #define out_be16(a,v)	out_arch(w,be16,a,v)
     76 
     77 #define in_be32(a)	in_arch(l,be32,a)
     78 #define in_be16(a)	in_arch(w,be16,a)
     79 
     80 #define out_8(a,v)	writeb(v,a)
     81 #define in_8(a)		readb(a)
     82 
     83 #define clrbits(type, addr, clear) \
     84 	out_##type((addr), in_##type(addr) & ~(clear))
     85 
     86 #define setbits(type, addr, set) \
     87 	out_##type((addr), in_##type(addr) | (set))
     88 
     89 #define clrsetbits(type, addr, clear, set) \
     90 	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
     91 
     92 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
     93 #define setbits_be32(addr, set) setbits(be32, addr, set)
     94 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
     95 
     96 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
     97 #define setbits_le32(addr, set) setbits(le32, addr, set)
     98 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
     99 
    100 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
    101 #define setbits_be16(addr, set) setbits(be16, addr, set)
    102 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
    103 
    104 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
    105 #define setbits_le16(addr, set) setbits(le16, addr, set)
    106 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
    107 
    108 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
    109 #define setbits_8(addr, set) setbits(8, addr, set)
    110 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
    111 
    112 /* I/O access functions */
    113 int inl(unsigned int addr);
    114 int inw(unsigned int addr);
    115 int inb(unsigned int addr);
    116 
    117 void outl(unsigned int value, unsigned int addr);
    118 void outw(unsigned int value, unsigned int addr);
    119 void outb(unsigned int value, unsigned int addr);
    120 
    121 #define out_arch(type,endian,a,v)	write##type(cpu_to_##endian(v),a)
    122 #define in_arch(type,endian,a)		endian##_to_cpu(read##type(a))
    123 
    124 #define out_le32(a,v)	out_arch(l,le32,a,v)
    125 #define out_le16(a,v)	out_arch(w,le16,a,v)
    126 
    127 #define in_le32(a)	in_arch(l,le32,a)
    128 #define in_le16(a)	in_arch(w,le16,a)
    129 
    130 #define out_be32(a,v)	out_arch(l,be32,a,v)
    131 #define out_be16(a,v)	out_arch(w,be16,a,v)
    132 
    133 #define in_be32(a)	in_arch(l,be32,a)
    134 #define in_be16(a)	in_arch(w,be16,a)
    135 
    136 #define out_8(a,v)	writeb(v,a)
    137 #define in_8(a)		readb(a)
    138 
    139 #define clrbits(type, addr, clear) \
    140 	out_##type((addr), in_##type(addr) & ~(clear))
    141 
    142 #define setbits(type, addr, set) \
    143 	out_##type((addr), in_##type(addr) | (set))
    144 
    145 #define clrsetbits(type, addr, clear, set) \
    146 	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
    147 
    148 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
    149 #define setbits_be32(addr, set) setbits(be32, addr, set)
    150 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
    151 
    152 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
    153 #define setbits_le32(addr, set) setbits(le32, addr, set)
    154 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
    155 
    156 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
    157 #define setbits_be16(addr, set) setbits(be16, addr, set)
    158 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
    159 
    160 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
    161 #define setbits_le16(addr, set) setbits(le16, addr, set)
    162 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
    163 
    164 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
    165 #define setbits_8(addr, set) setbits(8, addr, set)
    166 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
    167 
    168 static inline void _insw(volatile u16 *port, void *buf, int ns)
    169 {
    170 }
    171 
    172 static inline void _outsw(volatile u16 *port, const void *buf, int ns)
    173 {
    174 }
    175 
    176 #define insw(port, buf, ns)		_insw((u16 *)port, buf, ns)
    177 #define outsw(port, buf, ns)		_outsw((u16 *)port, buf, ns)
    178 
    179 #include <iotrace.h>
    180 #include <asm/types.h>
    181 
    182 #endif
    183