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-rw-r--r--arch/sh/boards/mach-snapgear/io.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-snapgear/io.c b/arch/sh/boards/mach-snapgear/io.c
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+++ b/arch/sh/boards/mach-snapgear/io.c
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+/*
+ * Copyright (C) 2002 David McCullough <davidm@snapgear.com>
+ * Copyright (C) 2001 Ian da Silva, Jeremy Siegel
+ * Based largely on io_se.c.
+ *
+ * I/O routine for Hitachi 7751 SolutionEngine.
+ *
+ * Initial version only to support LAN access; some
+ * placeholder code from io_se.c left in with the
+ * expectation of later SuperIO and PCMCIA access.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <asm/addrspace.h>
+
+#ifdef CONFIG_SH_SECUREEDGE5410
+unsigned short secureedge5410_ioport;
+#endif
+
+static inline volatile __u16 *port2adr(unsigned int port)
+{
+ maybebadio((unsigned long)port);
+ return (volatile __u16*)port;
+}
+
+/*
+ * General outline: remap really low stuff [eventually] to SuperIO,
+ * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
+ * is mapped through the PCI IO window. Stuff with high bits (PXSEG)
+ * should be way beyond the window, and is used w/o translation for
+ * compatibility.
+ */
+unsigned char snapgear_inb(unsigned long port)
+{
+ if (PXSEG(port))
+ return *(volatile unsigned char *)port;
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned char *)pci_ioaddr(port);
+ else
+ return (*port2adr(port)) & 0xff;
+}
+
+unsigned char snapgear_inb_p(unsigned long port)
+{
+ unsigned char v;
+
+ if (PXSEG(port))
+ v = *(volatile unsigned char *)port;
+ else if (is_pci_ioaddr(port))
+ v = *(volatile unsigned char *)pci_ioaddr(port);
+ else
+ v = (*port2adr(port))&0xff;
+ ctrl_delay();
+ return v;
+}
+
+unsigned short snapgear_inw(unsigned long port)
+{
+ if (PXSEG(port))
+ return *(volatile unsigned short *)port;
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned short *)pci_ioaddr(port);
+ else if (port >= 0x2000)
+ return *port2adr(port);
+ else
+ maybebadio(port);
+ return 0;
+}
+
+unsigned int snapgear_inl(unsigned long port)
+{
+ if (PXSEG(port))
+ return *(volatile unsigned long *)port;
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned int *)pci_ioaddr(port);
+ else if (port >= 0x2000)
+ return *port2adr(port);
+ else
+ maybebadio(port);
+ return 0;
+}
+
+void snapgear_outb(unsigned char value, unsigned long port)
+{
+
+ if (PXSEG(port))
+ *(volatile unsigned char *)port = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned char*)pci_ioaddr(port)) = value;
+ else
+ *(port2adr(port)) = value;
+}
+
+void snapgear_outb_p(unsigned char value, unsigned long port)
+{
+ if (PXSEG(port))
+ *(volatile unsigned char *)port = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned char*)pci_ioaddr(port)) = value;
+ else
+ *(port2adr(port)) = value;
+ ctrl_delay();
+}
+
+void snapgear_outw(unsigned short value, unsigned long port)
+{
+ if (PXSEG(port))
+ *(volatile unsigned short *)port = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned short *)pci_ioaddr(port)) = value;
+ else if (port >= 0x2000)
+ *port2adr(port) = value;
+ else
+ maybebadio(port);
+}
+
+void snapgear_outl(unsigned int value, unsigned long port)
+{
+ if (PXSEG(port))
+ *(volatile unsigned long *)port = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned long*)pci_ioaddr(port)) = value;
+ else
+ maybebadio(port);
+}
+
+void snapgear_insl(unsigned long port, void *addr, unsigned long count)
+{
+ maybebadio(port);
+}
+
+void snapgear_outsl(unsigned long port, const void *addr, unsigned long count)
+{
+ maybebadio(port);
+}