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-rw-r--r--arch/sh/boards/mach-se/7206/io.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-se/7206/io.c b/arch/sh/boards/mach-se/7206/io.c
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+/* $Id: io.c,v 1.5 2004/02/22 23:08:43 kkojima Exp $
+ *
+ * linux/arch/sh/boards/se/7206/io.c
+ *
+ * Copyright (C) 2006 Yoshinori Sato
+ *
+ * I/O routine for Hitachi 7206 SolutionEngine.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <mach-se/mach/se7206.h>
+
+
+static inline void delay(void)
+{
+ ctrl_inw(0x20000000); /* P2 ROM Area */
+}
+
+/* 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 >= 0x2000 && port < 0x2020)
+ return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
+ else if (port >= 0x300 && port < 0x310)
+ return (volatile __u16 *) (PA_SMSC + (port - 0x300));
+
+ return (volatile __u16 *)port;
+}
+
+unsigned char se7206_inb(unsigned long port)
+{
+ return (*port2adr(port)) & 0xff;
+}
+
+unsigned char se7206_inb_p(unsigned long port)
+{
+ unsigned long v;
+
+ v = (*port2adr(port)) & 0xff;
+ delay();
+ return v;
+}
+
+unsigned short se7206_inw(unsigned long port)
+{
+ return *port2adr(port);;
+}
+
+void se7206_outb(unsigned char value, unsigned long port)
+{
+ *(port2adr(port)) = value;
+}
+
+void se7206_outb_p(unsigned char value, unsigned long port)
+{
+ *(port2adr(port)) = value;
+ delay();
+}
+
+void se7206_outw(unsigned short value, unsigned long port)
+{
+ *port2adr(port) = value;
+}
+
+void se7206_insb(unsigned long port, void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ __u8 *ap = addr;
+
+ while (count--)
+ *ap++ = *p;
+}
+
+void se7206_insw(unsigned long port, void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ __u16 *ap = addr;
+ while (count--)
+ *ap++ = *p;
+}
+
+void se7206_outsb(unsigned long port, const void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ const __u8 *ap = addr;
+
+ while (count--)
+ *p = *ap++;
+}
+
+void se7206_outsw(unsigned long port, const void *addr, unsigned long count)
+{
+ volatile __u16 *p = port2adr(port);
+ const __u16 *ap = addr;
+ while (count--)
+ *p = *ap++;
+}