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-rw-r--r--include/asm-arm/arch-shark/io.h199
1 files changed, 199 insertions, 0 deletions
diff --git a/include/asm-arm/arch-shark/io.h b/include/asm-arm/arch-shark/io.h
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index 000000000000..1e7f26bc2e1d
--- /dev/null
+++ b/include/asm-arm/arch-shark/io.h
@@ -0,0 +1,199 @@
+/*
+ * linux/include/asm-arm/arch-shark/io.h
+ *
+ * by Alexander Schulz
+ *
+ * derived from:
+ * linux/include/asm-arm/arch-ebsa110/io.h
+ * Copyright (C) 1997,1998 Russell King
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * We use two different types of addressing - PC style addresses, and ARM
+ * addresses. PC style accesses the PC hardware with the normal PC IO
+ * addresses, eg 0x3f8 for serial#1. ARM addresses are 0x80000000+
+ * and are translated to the start of IO.
+ */
+#define __PORT_PCIO(x) (!((x) & 0x80000000))
+
+/*
+ * Dynamic IO functions - let the compiler
+ * optimize the expressions
+ */
+#define DECLARE_DYN_OUT(fnsuffix,instr) \
+static inline void __out##fnsuffix (unsigned int value, unsigned int port) \
+{ \
+ unsigned long temp; \
+ __asm__ __volatile__( \
+ "tst %2, #0x80000000\n\t" \
+ "mov %0, %4\n\t" \
+ "addeq %0, %0, %3\n\t" \
+ "str" instr " %1, [%0, %2] @ out" #fnsuffix \
+ : "=&r" (temp) \
+ : "r" (value), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE) \
+ : "cc"); \
+}
+
+#define DECLARE_DYN_IN(sz,fnsuffix,instr) \
+static inline unsigned sz __in##fnsuffix (unsigned int port) \
+{ \
+ unsigned long temp, value; \
+ __asm__ __volatile__( \
+ "tst %2, #0x80000000\n\t" \
+ "mov %0, %4\n\t" \
+ "addeq %0, %0, %3\n\t" \
+ "ldr" instr " %1, [%0, %2] @ in" #fnsuffix \
+ : "=&r" (temp), "=r" (value) \
+ : "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE) \
+ : "cc"); \
+ return (unsigned sz)value; \
+}
+
+static inline unsigned int __ioaddr (unsigned int port) \
+{ \
+ if (__PORT_PCIO(port)) \
+ return (unsigned int)(PCIO_BASE + (port)); \
+ else \
+ return (unsigned int)(IO_BASE + (port)); \
+}
+
+#define DECLARE_IO(sz,fnsuffix,instr) \
+ DECLARE_DYN_OUT(fnsuffix,instr) \
+ DECLARE_DYN_IN(sz,fnsuffix,instr)
+
+DECLARE_IO(char,b,"b")
+DECLARE_IO(short,w,"h")
+DECLARE_IO(long,l,"")
+
+#undef DECLARE_IO
+#undef DECLARE_DYN_OUT
+#undef DECLARE_DYN_IN
+
+/*
+ * Constant address IO functions
+ *
+ * These have to be macros for the 'J' constraint to work -
+ * +/-4096 immediate operand.
+ */
+#define __outbc(value,port) \
+({ \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "strb %0, [%1, %2] @ outbc" \
+ : : "r" (value), "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "strb %0, [%1, %2] @ outbc" \
+ : : "r" (value), "r" (IO_BASE), "r" (port)); \
+})
+
+#define __inbc(port) \
+({ \
+ unsigned char result; \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "ldrb %0, [%1, %2] @ inbc" \
+ : "=r" (result) : "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "ldrb %0, [%1, %2] @ inbc" \
+ : "=r" (result) : "r" (IO_BASE), "r" (port)); \
+ result; \
+})
+
+#define __outwc(value,port) \
+({ \
+ unsigned long v = value; \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "strh %0, [%1, %2] @ outwc" \
+ : : "r" (v|v<<16), "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "strh %0, [%1, %2] @ outwc" \
+ : : "r" (v|v<<16), "r" (IO_BASE), "r" (port)); \
+})
+
+#define __inwc(port) \
+({ \
+ unsigned short result; \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "ldrh %0, [%1, %2] @ inwc" \
+ : "=r" (result) : "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "ldrh %0, [%1, %2] @ inwc" \
+ : "=r" (result) : "r" (IO_BASE), "r" (port)); \
+ result & 0xffff; \
+})
+
+#define __outlc(value,port) \
+({ \
+ unsigned long v = value; \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "str %0, [%1, %2] @ outlc" \
+ : : "r" (v), "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "str %0, [%1, %2] @ outlc" \
+ : : "r" (v), "r" (IO_BASE), "r" (port)); \
+})
+
+#define __inlc(port) \
+({ \
+ unsigned long result; \
+ if (__PORT_PCIO((port))) \
+ __asm__ __volatile__( \
+ "ldr %0, [%1, %2] @ inlc" \
+ : "=r" (result) : "r" (PCIO_BASE), "Jr" (port)); \
+ else \
+ __asm__ __volatile__( \
+ "ldr %0, [%1, %2] @ inlc" \
+ : "=r" (result) : "r" (IO_BASE), "r" (port)); \
+ result; \
+})
+
+#define __ioaddrc(port) \
+({ \
+ unsigned long addr; \
+ if (__PORT_PCIO((port))) \
+ addr = PCIO_BASE + (port); \
+ else \
+ addr = IO_BASE + (port); \
+ addr; \
+})
+
+#define __mem_pci(addr) (addr)
+
+#define inb(p) (__builtin_constant_p((p)) ? __inbc(p) : __inb(p))
+#define inw(p) (__builtin_constant_p((p)) ? __inwc(p) : __inw(p))
+#define inl(p) (__builtin_constant_p((p)) ? __inlc(p) : __inl(p))
+#define outb(v,p) (__builtin_constant_p((p)) ? __outbc(v,p) : __outb(v,p))
+#define outw(v,p) (__builtin_constant_p((p)) ? __outwc(v,p) : __outw(v,p))
+#define outl(v,p) (__builtin_constant_p((p)) ? __outlc(v,p) : __outl(v,p))
+
+/*
+ * Translated address IO functions
+ *
+ * IO address has already been translated to a virtual address
+ */
+#define outb_t(v,p) \
+ (*(volatile unsigned char *)(p) = (v))
+
+#define inb_t(p) \
+ (*(volatile unsigned char *)(p))
+
+#define outl_t(v,p) \
+ (*(volatile unsigned long *)(p) = (v))
+
+#define inl_t(p) \
+ (*(volatile unsigned long *)(p))
+
+#endif