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-rw-r--r--arch/sh/boards/mach-se/770x/io.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-se/770x/io.c b/arch/sh/boards/mach-se/770x/io.c
new file mode 100644
index 000000000000..b1ec085b8673
--- /dev/null
+++ b/arch/sh/boards/mach-se/770x/io.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2000 Kazumoto Kojima
+ *
+ * I/O routine for Hitachi SolutionEngine.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/se.h>
+
+/* MS7750 requires special versions of in*, out* routines, since
+ PC-like io ports are located at upper half byte of 16-bit word which
+ can be accessed only with 16-bit wide. */
+
+static inline volatile __u16 *
+port2adr(unsigned int port)
+{
+ if (port & 0xff000000)
+ return ( volatile __u16 *) port;
+ if (port >= 0x2000)
+ return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
+ else if (port >= 0x1000)
+ return (volatile __u16 *) (PA_83902 + (port << 1));
+ else
+ return (volatile __u16 *) (PA_SUPERIO + (port << 1));
+}
+
+static inline int
+shifted_port(unsigned long port)
+{
+ /* For IDE registers, value is not shifted */
+ if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
+ return 0;
+ else
+ return 1;
+}
+
+unsigned char se_inb(unsigned long port)
+{
+ if (shifted_port(port))
+ return (*port2adr(port) >> 8);
+ else
+ return (*port2adr(port))&0xff;
+}
+
+unsigned char se_inb_p(unsigned long port)
+{
+ unsigned long v;
+
+ if (shifted_port(port))
+ v = (*port2adr(port) >> 8);
+ else
+ v = (*port2adr(port))&0xff;
+ ctrl_delay();
+ return v;
+}
+
+unsigned short se_inw(unsigned long port)
+{
+ if (port >= 0x2000)
+ return *port2adr(port);
+ else
+ maybebadio(port);
+ return 0;
+}
+
+unsigned int se_inl(unsigned long port)
+{
+ maybebadio(port);
+ return 0;
+}
+
+void se_outb(unsigned char value, unsigned long port)
+{
+ if (shifted_port(port))
+ *(port2adr(port)) = value << 8;
+ else
+ *(port2adr(port)) = value;
+}
+
+void se_outb_p(unsigned char value, unsigned long port)
+{
+ if (shifted_port(port))
+ *(port2adr(port)) = value << 8;
+ else
+ *(port2adr(port)) = value;
+ ctrl_delay();
+}
+
+void se_outw(unsigned short value, unsigned long port)
+{
+ if (port >= 0x2000)
+ *port2adr(port) = value;
+ else
+ maybebadio(port);
+}
+
+void se_outl(unsigned int value, unsigned long port)
+{
+ maybebadio(port);
+}
+
+void se_insb(unsigned long port, void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ __u8 *ap = addr;
+
+ if (shifted_port(port)) {
+ while (count--)
+ *ap++ = *p >> 8;
+ } else {
+ while (count--)
+ *ap++ = *p;
+ }
+}
+
+void se_insw(unsigned long port, void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ __u16 *ap = addr;
+ while (count--)
+ *ap++ = *p;
+}
+
+void se_insl(unsigned long port, void *addr, unsigned long count)
+{
+ maybebadio(port);
+}
+
+void se_outsb(unsigned long port, const void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ const __u8 *ap = addr;
+
+ if (shifted_port(port)) {
+ while (count--)
+ *p = *ap++ << 8;
+ } else {
+ while (count--)
+ *p = *ap++;
+ }
+}
+
+void se_outsw(unsigned long port, const void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ const __u16 *ap = addr;
+
+ while (count--)
+ *p = *ap++;
+}
+
+void se_outsl(unsigned long port, const void *addr, unsigned long count)
+{
+ maybebadio(port);
+}