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Diffstat (limited to 'include/asm-arm/arch-l7200/io.h')
-rw-r--r--include/asm-arm/arch-l7200/io.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/include/asm-arm/arch-l7200/io.h b/include/asm-arm/arch-l7200/io.h
new file mode 100644
index 00000000000..fc012a39e2c
--- /dev/null
+++ b/include/asm-arm/arch-l7200/io.h
@@ -0,0 +1,76 @@
+/*
+ * linux/include/asm-arm/arch-l7200/io.h
+ *
+ * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
+ *
+ * Changelog:
+ * 03-21-2000 SJH Created from linux/include/asm-arm/arch-nexuspci/io.h
+ * 08-31-2000 SJH Added in IO functions necessary for new drivers
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <asm/arch/hardware.h>
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * There are not real ISA nor PCI buses, so we fake it.
+ */
+#define __io_pci(a) ((void __iomem *)(PCIO_BASE + (a)))
+#define __mem_pci(a) (a)
+#define __mem_isa(a) (a)
+
+#define __ioaddr(p) __io_pci(p)
+
+/*
+ * Generic virtual read/write
+ */
+#define __arch_getb(a) (*(volatile unsigned char *)(a))
+#define __arch_getl(a) (*(volatile unsigned int *)(a))
+
+static inline unsigned int __arch_getw(unsigned long a)
+{
+ unsigned int value;
+ __asm__ __volatile__("ldr%?h %0, [%1, #0] @ getw"
+ : "=&r" (value)
+ : "r" (a));
+ return value;
+}
+
+#define __arch_putb(v,a) (*(volatile unsigned char *)(a) = (v))
+#define __arch_putl(v,a) (*(volatile unsigned int *)(a) = (v))
+
+static inline void __arch_putw(unsigned int value, unsigned long a)
+{
+ __asm__ __volatile__("str%?h %0, [%1, #0] @ putw"
+ : : "r" (value), "r" (a));
+}
+
+/*
+ * 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 outw_t(v,p) (*(volatile unsigned int *)(p) = (v))
+#define inw_t(p) (*(volatile unsigned int *)(p))
+#define outl_t(v,p) (*(volatile unsigned long *)(p) = (v))
+#define inl_t(p) (*(volatile unsigned long *)(p))
+
+/*
+ * FIXME - These are to allow for linking. On all the other
+ * ARM platforms, the entire IO space is contiguous.
+ * The 7200 has three separate IO spaces. The below
+ * macros will eventually become more involved. Use
+ * with caution and don't be surprised by kernel oopses!!!
+ */
+#define inb(p) inb_t(p)
+#define inw(p) inw_t(p)
+#define inl(p) inl_t(p)
+#define outb(v,p) outb_t(v,p)
+#define outw(v,p) outw_t(v,p)
+#define outl(v,p) outl_t(v,p)
+
+#endif