4 #include <linux/types.h>
5 #include <asm/pgtable.h>
7 #define virt_to_phys(a) ((unsigned long)__pa(a))
8 #define phys_to_virt(a) __va(a)
9 #define virt_to_bus virt_to_phys
10 #define bus_to_virt phys_to_virt
12 static inline unsigned long isa_bus_to_virt(unsigned long addr) {
17 static inline unsigned long isa_virt_to_bus(void *addr) {
25 * readX()/writeX() do byteswapping and take an ioremapped address
26 * __raw_readX()/__raw_writeX() don't byteswap and take an ioremapped address.
27 * gsc_*() don't byteswap and operate on physical addresses;
28 * eg dev->hpa or 0xfee00000.
31 static inline unsigned char gsc_readb(unsigned long addr)
40 : "=&r" (flags), "=r" (ret) : "r" (addr) );
45 static inline unsigned short gsc_readw(unsigned long addr)
54 : "=&r" (flags), "=r" (ret) : "r" (addr) );
59 static inline unsigned int gsc_readl(unsigned long addr)
65 : "=r" (ret) : "r" (addr) );
70 static inline unsigned long long gsc_readq(unsigned long addr)
72 unsigned long long ret;
77 : "=r" (ret) : "r" (addr) );
79 /* two reads may have side effects.. */
80 ret = ((u64) gsc_readl(addr)) << 32;
81 ret |= gsc_readl(addr+4);
86 static inline void gsc_writeb(unsigned char val, unsigned long addr)
93 : "=&r" (flags) : "r" (val), "r" (addr) );
96 static inline void gsc_writew(unsigned short val, unsigned long addr)
103 : "=&r" (flags) : "r" (val), "r" (addr) );
106 static inline void gsc_writel(unsigned int val, unsigned long addr)
108 __asm__ __volatile__(
110 : : "r" (val), "r" (addr) );
113 static inline void gsc_writeq(unsigned long long val, unsigned long addr)
116 __asm__ __volatile__(
118 : : "r" (val), "r" (addr) );
120 /* two writes may have side effects.. */
121 gsc_writel(val >> 32, addr);
122 gsc_writel(val, addr+4);
127 * The standard PCI ioremap interfaces
130 extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
132 /* Most machines react poorly to I/O-space being cacheable... Instead let's
133 * define ioremap() in terms of ioremap_nocache().
135 static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
137 return __ioremap(offset, size, _PAGE_NO_CACHE);
139 #define ioremap_nocache(off, sz) ioremap((off), (sz))
141 extern void iounmap(const volatile void __iomem *addr);
143 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
145 return (*(volatile unsigned char __force *) (addr));
147 static inline unsigned short __raw_readw(const volatile void __iomem *addr)
149 return *(volatile unsigned short __force *) addr;
151 static inline unsigned int __raw_readl(const volatile void __iomem *addr)
153 return *(volatile unsigned int __force *) addr;
155 static inline unsigned long long __raw_readq(const volatile void __iomem *addr)
157 return *(volatile unsigned long long __force *) addr;
160 static inline void __raw_writeb(unsigned char b, volatile void __iomem *addr)
162 *(volatile unsigned char __force *) addr = b;
164 static inline void __raw_writew(unsigned short b, volatile void __iomem *addr)
166 *(volatile unsigned short __force *) addr = b;
168 static inline void __raw_writel(unsigned int b, volatile void __iomem *addr)
170 *(volatile unsigned int __force *) addr = b;
172 static inline void __raw_writeq(unsigned long long b, volatile void __iomem *addr)
174 *(volatile unsigned long long __force *) addr = b;
177 /* readb can never be const, so use __fswab instead of le*_to_cpu */
178 #define readb(addr) __raw_readb(addr)
179 #define readw(addr) le16_to_cpu(__raw_readw(addr))
180 #define readl(addr) le32_to_cpu(__raw_readl(addr))
181 #define readq(addr) le64_to_cpu(__raw_readq(addr))
182 #define writeb(b, addr) __raw_writeb(b, addr)
183 #define writew(b, addr) __raw_writew(cpu_to_le16(b), addr)
184 #define writel(b, addr) __raw_writel(cpu_to_le32(b), addr)
185 #define writeq(b, addr) __raw_writeq(cpu_to_le64(b), addr)
187 #define readb_relaxed(addr) readb(addr)
188 #define readw_relaxed(addr) readw(addr)
189 #define readl_relaxed(addr) readl(addr)
190 #define readq_relaxed(addr) readq(addr)
192 #define mmiowb() do { } while (0)
194 void memset_io(volatile void __iomem *addr, unsigned char val, int count);
195 void memcpy_fromio(void *dst, const volatile void __iomem *src, int count);
196 void memcpy_toio(volatile void __iomem *dst, const void *src, int count);
207 extern unsigned char eisa_in8(unsigned short port);
208 extern unsigned short eisa_in16(unsigned short port);
209 extern unsigned int eisa_in32(unsigned short port);
210 extern void eisa_out8(unsigned char data, unsigned short port);
211 extern void eisa_out16(unsigned short data, unsigned short port);
212 extern void eisa_out32(unsigned int data, unsigned short port);
214 #if defined(CONFIG_PCI)
215 extern unsigned char inb(int addr);
216 extern unsigned short inw(int addr);
217 extern unsigned int inl(int addr);
219 extern void outb(unsigned char b, int addr);
220 extern void outw(unsigned short b, int addr);
221 extern void outl(unsigned int b, int addr);
222 #elif defined(CONFIG_EISA)
224 #define inw eisa_in16
225 #define inl eisa_in32
226 #define outb eisa_out8
227 #define outw eisa_out16
228 #define outl eisa_out32
230 static inline char inb(unsigned long addr)
236 static inline short inw(unsigned long addr)
242 static inline int inl(unsigned long addr)
248 #define outb(x, y) BUG()
249 #define outw(x, y) BUG()
250 #define outl(x, y) BUG()
254 * String versions of in/out ops:
256 extern void insb (unsigned long port, void *dst, unsigned long count);
257 extern void insw (unsigned long port, void *dst, unsigned long count);
258 extern void insl (unsigned long port, void *dst, unsigned long count);
259 extern void outsb (unsigned long port, const void *src, unsigned long count);
260 extern void outsw (unsigned long port, const void *src, unsigned long count);
261 extern void outsl (unsigned long port, const void *src, unsigned long count);
264 /* IO Port space is : BBiiii where BB is HBA number. */
265 #define IO_SPACE_LIMIT 0x00ffffff
267 /* PA machines have an MM I/O space from 0xf0000000-0xffffffff in 32
268 * bit mode and from 0xfffffffff0000000-0xfffffffffffffff in 64 bit
269 * mode (essentially just sign extending. This macro takes in a 32
270 * bit I/O address (still with the leading f) and outputs the correct
271 * value for either 32 or 64 bit mode */
272 #define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))
274 #include <asm-generic/iomap.h>
277 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
280 #define xlate_dev_mem_ptr(p) __va(p)
283 * Convert a virtual cached pointer to an uncached pointer
285 #define xlate_dev_kmem_ptr(p) p