aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/boards/mach-se/770x/io.c
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2008-07-29 21:01:19 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-07-29 21:01:19 +0900
commitda2014a2b080e7f3024a4eb6917d47069ad9620b (patch)
treecfde12c6d4b5baa222966b14a676f107992cf786 /arch/sh/boards/mach-se/770x/io.c
parent71b8064e7df5698520d73b4c1566a3dbc98eb9ef (diff)
sh: Shuffle the board directories in to mach groups.
This flattens out the board directories in to individual mach groups, we will use this for getting rid of unneeded directories, simplifying the build system, and becoming more coherent with the refactored arch/sh/include topology. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/mach-se/770x/io.c')
-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 00000000000..b1ec085b867
--- /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);
+}