1 #ifndef _ASM_IO_H
2 #define _ASM_IO_H
3
4 #include "asm/types.h"
5 #include "asi.h"
6
7 #define NO_QEMU_PROTOS
8 #include "arch/common/fw_cfg.h"
9
10 extern unsigned long va_shift; // Set in entry.S
11 // Defined in ldscript
12 extern char _start, _data, _stack, _estack, _fcstack, _efcstack, _end, _iomem;
13
14 // XXX check use and merge
15 #define phys_to_virt(phys) ((void *) ((unsigned long) (phys)))
16 #define virt_to_phys(virt) ((unsigned long) (virt))
17
18 #ifndef BOOTSTRAP
19
20 extern unsigned long isa_io_base;
21
22 /*
23 * The insw/outsw/insl/outsl macros don't do byte-swapping.
24 * They are only used in practice for transferring buffers which
25 * are arrays of bytes, and byte-swapping is not appropriate in
26 * that case. - paulus
27 */
28 #define insw(port, buf, ns) _insw_ns((uint16_t *)((port)+isa_io_base), (buf), (ns))
29 #define outsw(port, buf, ns) _outsw_ns((uint16_t *)((port)+isa_io_base), (buf), (ns))
30
31 #define inb(port) in_8((uint8_t *)((port)+isa_io_base))
32 #define outb(val, port) out_8((uint8_t *)((port)+isa_io_base), (val))
33 #define inw(port) in_le16((uint16_t *)((port)+isa_io_base))
34 #define outw(val, port) out_le16((uint16_t *)((port)+isa_io_base), (val))
35 #define inl(port) in_le32((uint32_t *)((port)+isa_io_base))
36 #define outl(val, port) out_le32((uint32_t *)((port)+isa_io_base), (val))
37
38 /*
39 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
40 */
in_8(volatile unsigned char * addr)41 static inline int in_8(volatile unsigned char *addr)
42 {
43 int ret;
44
45 __asm__ __volatile__("lduba [%1] %2, %0\n\t"
46 : "=r"(ret)
47 : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
48 : "memory");
49
50 return ret;
51 }
52
out_8(volatile unsigned char * addr,int val)53 static inline void out_8(volatile unsigned char *addr, int val)
54 {
55 __asm__ __volatile__("stba %0, [%1] %2\n\t"
56 :
57 : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
58 : "memory");
59 }
60
in_be16(volatile unsigned short * addr)61 static inline int in_be16(volatile unsigned short *addr)
62 {
63 int ret;
64
65 __asm__ __volatile__("lduha [%1] %2, %0\n\t"
66 : "=r"(ret)
67 : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
68 : "memory");
69
70 return ret;
71 }
72
in_le16(volatile unsigned short * addr)73 static inline int in_le16(volatile unsigned short *addr)
74 {
75 int ret;
76
77 __asm__ __volatile__("lduha [%1] %2, %0\n\t"
78 : "=r"(ret)
79 : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
80 : "memory");
81
82 return ret;
83 }
84
out_be16(volatile unsigned short * addr,int val)85 static inline void out_be16(volatile unsigned short *addr, int val)
86 {
87
88 __asm__ __volatile__("stha %0, [%1] %2\n\t"
89 :
90 : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
91 : "memory");
92 }
93
out_le16(volatile unsigned short * addr,int val)94 static inline void out_le16(volatile unsigned short *addr, int val)
95 {
96 __asm__ __volatile__("stha %0, [%1] %2\n\t"
97 :
98 : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
99 : "memory");
100 }
101
in_be32(volatile unsigned * addr)102 static inline unsigned in_be32(volatile unsigned *addr)
103 {
104 unsigned ret;
105
106 __asm__ __volatile__("lduwa [%1] %2, %0\n\t"
107 : "=r"(ret)
108 : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
109 : "memory");
110
111 return ret;
112 }
113
in_le32(volatile unsigned * addr)114 static inline unsigned in_le32(volatile unsigned *addr)
115 {
116 unsigned ret;
117
118 __asm__ __volatile__("lduwa [%1] %2, %0\n\t"
119 : "=r"(ret)
120 : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
121 : "memory");
122 return ret;
123 }
124
out_be32(volatile unsigned * addr,int val)125 static inline void out_be32(volatile unsigned *addr, int val)
126 {
127 __asm__ __volatile__("stwa %0, [%1] %2\n\t"
128 :
129 : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
130 : "memory");
131 }
132
out_le32(volatile unsigned * addr,int val)133 static inline void out_le32(volatile unsigned *addr, int val)
134 {
135 __asm__ __volatile__("stwa %0, [%1] %2\n\t"
136 :
137 : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
138 : "memory");
139 }
140
_insw_ns(volatile uint16_t * port,void * buf,int ns)141 static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns)
142 {
143 uint16_t *b = (uint16_t *) buf;
144
145 while (ns > 0) {
146 *b++ = in_be16(port);
147 ns--;
148 }
149 }
150
_outsw_ns(volatile uint16_t * port,const void * buf,int ns)151 static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
152 int ns)
153 {
154 uint16_t *b = (uint16_t *) buf;
155
156 while (ns > 0) {
157 out_be16(port, *b++);
158 ns--;
159 }
160 }
161
_insw(volatile uint16_t * port,void * buf,int ns)162 static inline void _insw(volatile uint16_t * port, void *buf, int ns)
163 {
164 uint16_t *b = (uint16_t *) buf;
165
166 while (ns > 0) {
167 *b++ = in_le16(port);
168 ns--;
169 }
170 }
171
_outsw(volatile uint16_t * port,const void * buf,int ns)172 static inline void _outsw(volatile uint16_t * port, const void *buf,
173 int ns)
174 {
175 uint16_t *b = (uint16_t *) buf;
176
177 while (ns > 0) {
178 out_le16(port, *b++);
179 ns--;
180 }
181 }
182 #else /* BOOTSTRAP */
183 #ifdef FCOMPILER
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)
190 #else
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);
199 #endif
200 #endif
201
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)
206 #endif
207
208 #endif /* _ASM_IO_H */
209