7 #include "arch/common/fw_cfg.h"
9 extern char _start, _end;
10 extern unsigned long virt_offset;
12 #define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virt_offset))
13 #define virt_to_phys(virt) ((unsigned long) (virt) + virt_offset)
17 extern unsigned long isa_io_base;
20 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
22 static inline uint8_t in_8(volatile uint8_t *addr)
26 __asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
30 static inline void out_8(volatile uint8_t *addr, uint8_t val)
32 __asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
35 static inline uint16_t in_le16(volatile uint16_t *addr)
39 __asm__ __volatile__("lhbrx %0,0,%1; eieio":"=r"(ret):
40 "r"(addr), "m"(*addr));
44 static inline uint16_t in_be16(volatile uint16_t *addr)
48 __asm__ __volatile__("lhz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
52 static inline void out_le16(volatile uint16_t *addr, uint16_t val)
54 __asm__ __volatile__("sthbrx %1,0,%2; eieio":"=m"(*addr):"r"(val),
58 static inline void out_be16(volatile uint16_t *addr, uint16_t val)
60 __asm__ __volatile__("sth%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
63 static inline uint32_t in_le32(volatile uint32_t *addr)
67 __asm__ __volatile__("lwbrx %0,0,%1; eieio":"=r"(ret):
68 "r"(addr), "m"(*addr));
72 static inline uint32_t in_be32(volatile uint32_t *addr)
76 __asm__ __volatile__("lwz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
80 static inline void out_le32(volatile uint32_t *addr, uint32_t val)
82 __asm__ __volatile__("stwbrx %1,0,%2; eieio":"=m"(*addr):"r"(val),
86 static inline void out_be32(volatile unsigned *addr, uint32_t val)
88 __asm__ __volatile__("stw%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
91 static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns)
93 uint16_t *b = (uint16_t *) buf;
101 static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
104 uint16_t *b = (uint16_t *) buf;
107 out_le16(port, *b++);
112 static inline void _insw(volatile uint16_t * port, void *buf, int ns)
114 uint16_t *b = (uint16_t *) buf;
117 *b++ = in_be16(port);
122 static inline void _outsw(volatile uint16_t * port, const void *buf,
125 uint16_t *b = (uint16_t *) buf;
128 out_be16(port, *b++);
135 * The insw/outsw/insl/outsl functions don't do byte-swapping.
136 * They are only used in practice for transferring buffers which
137 * are arrays of bytes, and byte-swapping is not appropriate in
138 * that case. - paulus
141 static inline void insw(uint16_t port, void *buf, int ns)
143 _insw((uint16_t *)(port + isa_io_base), buf, ns);
146 static inline void outsw(uint16_t port, void *buf, int ns)
148 _outsw((uint16_t *)(port + isa_io_base), buf, ns);
152 static inline uint8_t inb(uint16_t port)
154 return in_8((uint8_t *)(port + isa_io_base));
157 static inline void outb(uint8_t val, uint16_t port)
159 out_8((uint8_t *)(port + isa_io_base), val);
162 static inline uint16_t inw(uint16_t port)
164 return in_le16((uint16_t *)(port + isa_io_base));
167 static inline void outw(uint16_t val, uint16_t port)
169 out_le16((uint16_t *)(port + isa_io_base), val);
172 static inline uint32_t inl(uint16_t port)
174 return in_le32((uint32_t *)(port + isa_io_base));
177 static inline void outl(uint32_t val, uint16_t port)
179 out_le32((uint32_t *)(port + isa_io_base), val);
182 #else /* BOOTSTRAP */
184 #define inb(reg) ((u8)0xff)
185 #define inw(reg) ((u16)0xffff)
186 #define inl(reg) ((u32)0xffffffff)
187 #define outb(reg, val) do{} while(0)
188 #define outw(reg, val) do{} while(0)
189 #define outl(reg, val) do{} while(0)
191 extern u8 inb(u32 reg);
192 extern u16 inw(u32 reg);
193 extern u32 inl(u32 reg);
194 extern void insw(u32 reg, void *addr, unsigned long count);
195 extern void outb(u32 reg, u8 val);
196 extern void outw(u32 reg, u16 val);
197 extern void outl(u32 reg, u32 val);
198 extern void outsw(u32 reg, const void *addr, unsigned long count);
202 #if defined(CONFIG_QEMU)
203 #define FW_CFG_ARCH_WIDTH (FW_CFG_ARCH_LOCAL + 0x00)
204 #define FW_CFG_ARCH_HEIGHT (FW_CFG_ARCH_LOCAL + 0x01)
205 #define FW_CFG_ARCH_DEPTH (FW_CFG_ARCH_LOCAL + 0x02)
208 #endif /* _ASM_IO_H */