Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 226 insertions, 0 deletions

diff --git a/arch/sh/boards/snapgear/io.c b/arch/sh/boards/snapgear/io.c
new file mode 100644
index 000000000000..e2eb78fc381d
--- /dev/null
+++ b/arch/sh/boards/snapgear/io.c
@@ -0,0 +1,226 @@
+/* 
+ * linux/arch/sh/kernel/io_7751se.c
+ *
+ * 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>
+
+#include <asm/pci.h>
+#include "../../drivers/pci/pci-sh7751.h"
+
+#ifdef CONFIG_SH_SECUREEDGE5410
+unsigned short secureedge5410_ioport;
+#endif
+
+/*
+ * The SnapGear uses the built-in PCI controller (PCIC)
+ * of the 7751 processor
+ */ 
+
+#define PCIIOBR         (volatile long *)PCI_REG(SH7751_PCIIOBR)
+#define PCIMBR          (volatile long *)PCI_REG(SH7751_PCIMBR)
+#define PCI_IO_AREA     SH7751_PCI_IO_BASE
+#define PCI_MEM_AREA    SH7751_PCI_CONFIG_BASE
+
+
+#define PCI_IOMAP(adr)  (PCI_IO_AREA + (adr & ~SH7751_PCIIOBR_MASK))
+
+
+#define maybebadio(name,port) \
+  printk("bad PC-like io %s for port 0x%lx at 0x%08x\n", \
+         #name, (port), (__u32) __builtin_return_address(0))
+
+
+static inline void delay(void)
+{
+        ctrl_inw(0xa0000000);
+}
+
+
+static inline volatile __u16 *port2adr(unsigned int port)
+{
+#if 0
+        if (port >= 0x2000)
+                return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
+#endif
+        maybebadio(name,(unsigned long)port);
+        return (volatile __u16*)port;
+}
+
+
+/* In case someone configures the kernel w/o PCI support: in that */
+/* scenario, don't ever bother to check for PCI-window addresses */
+
+/* NOTE: WINDOW CHECK MAY BE A BIT OFF, HIGH PCIBIOS_MIN_IO WRAPS? */
+#if defined(CONFIG_PCI)
+#define CHECK_SH7751_PCIIO(port) \
+  ((port >= PCIBIOS_MIN_IO) && (port < (PCIBIOS_MIN_IO + SH7751_PCI_IO_SIZE)))
+#else
+#define CHECK_SH7751_PCIIO(port) (0)
+#endif
+
+/*
+ * 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 (CHECK_SH7751_PCIIO(port))
+                return *(volatile unsigned char *)PCI_IOMAP(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 (CHECK_SH7751_PCIIO(port))
+                v = *(volatile unsigned char *)PCI_IOMAP(port);
+        else
+                v = (*port2adr(port))&0xff; 
+        delay();
+        return v;
+}
+
+
+unsigned short snapgear_inw(unsigned long port)
+{
+        if (PXSEG(port))
+                return *(volatile unsigned short *)port;
+        else if (CHECK_SH7751_PCIIO(port))
+                return *(volatile unsigned short *)PCI_IOMAP(port);
+        else if (port >= 0x2000)
+                return *port2adr(port);
+        else
+                maybebadio(inw, port);
+        return 0;
+}
+
+
+unsigned int snapgear_inl(unsigned long port)
+{
+        if (PXSEG(port))
+                return *(volatile unsigned long *)port;
+        else if (CHECK_SH7751_PCIIO(port))
+                return *(volatile unsigned int *)PCI_IOMAP(port);
+        else if (port >= 0x2000)
+                return *port2adr(port);
+        else
+                maybebadio(inl, port);
+        return 0;
+}
+
+
+void snapgear_outb(unsigned char value, unsigned long port)
+{
+
+        if (PXSEG(port))
+                *(volatile unsigned char *)port = value;
+        else if (CHECK_SH7751_PCIIO(port))
+                *((unsigned char*)PCI_IOMAP(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 (CHECK_SH7751_PCIIO(port))
+                *((unsigned char*)PCI_IOMAP(port)) = value;
+        else
+                *(port2adr(port)) = value;
+        delay();
+}
+
+
+void snapgear_outw(unsigned short value, unsigned long port)
+{
+        if (PXSEG(port))
+                *(volatile unsigned short *)port = value;
+        else if (CHECK_SH7751_PCIIO(port))
+                *((unsigned short *)PCI_IOMAP(port)) = value;
+        else if (port >= 0x2000)
+                *port2adr(port) = value;
+        else
+                maybebadio(outw, port);
+}
+
+
+void snapgear_outl(unsigned int value, unsigned long port)
+{
+        if (PXSEG(port))
+                *(volatile unsigned long *)port = value;
+        else if (CHECK_SH7751_PCIIO(port))
+                *((unsigned long*)PCI_IOMAP(port)) = value;
+        else
+                maybebadio(outl, port);
+}
+
+void snapgear_insl(unsigned long port, void *addr, unsigned long count)
+{
+        maybebadio(insl, port);
+}
+
+void snapgear_outsl(unsigned long port, const void *addr, unsigned long count)
+{
+        maybebadio(outsw, port);
+}
+
+/* Map ISA bus address to the real address. Only for PCMCIA.  */
+
+
+/* ISA page descriptor.  */
+static __u32 sh_isa_memmap[256];
+
+
+#if 0
+static int sh_isa_mmap(__u32 start, __u32 length, __u32 offset)
+{
+        int idx;
+
+        if (start >= 0x100000 || (start & 0xfff) || (length != 0x1000))
+                return -1;
+
+        idx = start >> 12;
+        sh_isa_memmap[idx] = 0xb8000000 + (offset &~ 0xfff);
+#if 0
+        printk("sh_isa_mmap: start %x len %x offset %x (idx %x paddr %x)\n",
+               start, length, offset, idx, sh_isa_memmap[idx]);
+#endif
+        return 0;
+}
+#endif
+
+unsigned long snapgear_isa_port2addr(unsigned long offset)
+{
+        int idx;
+
+        idx = (offset >> 12) & 0xff;
+        offset &= 0xfff;
+        return sh_isa_memmap[idx] + offset;
+}