1 files changed, 216 insertions, 0 deletions

diff --git a/arch/sh/cchips/hd6446x/hd64465/io.c b/arch/sh/cchips/hd6446x/hd64465/io.c
new file mode 100644
index 000000000000..99ac709c550e
--- /dev/null
+++ b/arch/sh/cchips/hd6446x/hd64465/io.c
@@ -0,0 +1,216 @@
+/*
+ * $Id: io.c,v 1.4 2003/08/03 03:05:10 lethal Exp $
+ * by Greg Banks <gbanks@pocketpenguins.com>
+ * (c) 2000 PocketPenguins Inc
+ *
+ * Derived from io_hd64461.c, which bore the message:
+ * Copyright (C) 2000 YAEGASHI Takeshi
+ *
+ * Typical I/O routines for HD64465 system.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include <asm/hd64465/hd64465.h>
+
+
+#define HD64465_DEBUG 0
+
+#if HD64465_DEBUG
+#define DPRINTK(args...)        printk(args)
+#define DIPRINTK(n, args...)    if (hd64465_io_debug>(n)) printk(args)
+#else
+#define DPRINTK(args...)
+#define DIPRINTK(n, args...)
+#endif
+
+
+
+/* This is a hack suitable only for debugging IO port problems */
+int hd64465_io_debug;
+EXPORT_SYMBOL(hd64465_io_debug);
+
+/* Low iomap maps port 0-1K to addresses in 8byte chunks */
+#define HD64465_IOMAP_LO_THRESH 0x400
+#define HD64465_IOMAP_LO_SHIFT  3
+#define HD64465_IOMAP_LO_MASK   ((1<<HD64465_IOMAP_LO_SHIFT)-1)
+#define HD64465_IOMAP_LO_NMAP   (HD64465_IOMAP_LO_THRESH>>HD64465_IOMAP_LO_SHIFT)
+static unsigned long    hd64465_iomap_lo[HD64465_IOMAP_LO_NMAP];
+static unsigned char    hd64465_iomap_lo_shift[HD64465_IOMAP_LO_NMAP];
+
+/* High iomap maps port 1K-64K to addresses in 1K chunks */
+#define HD64465_IOMAP_HI_THRESH 0x10000
+#define HD64465_IOMAP_HI_SHIFT  10
+#define HD64465_IOMAP_HI_MASK   ((1<<HD64465_IOMAP_HI_SHIFT)-1)
+#define HD64465_IOMAP_HI_NMAP   (HD64465_IOMAP_HI_THRESH>>HD64465_IOMAP_HI_SHIFT)
+static unsigned long    hd64465_iomap_hi[HD64465_IOMAP_HI_NMAP];
+static unsigned char    hd64465_iomap_hi_shift[HD64465_IOMAP_HI_NMAP];
+
+#ifndef MAX
+#define MAX(a,b)    ((a)>(b)?(a):(b))
+#endif
+
+#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
+
+void hd64465_port_map(unsigned short baseport, unsigned int nports,
+                      unsigned long addr, unsigned char shift)
+{
+        unsigned int port, endport = baseport + nports;
+
+        DPRINTK("hd64465_port_map(base=0x%04hx, n=0x%04hx, addr=0x%08lx,endport=0x%04x)\n",
+            baseport, nports, addr,endport);
+            
+        for (port = baseport ;
+             port < endport && port < HD64465_IOMAP_LO_THRESH ;
+             port += (1<<HD64465_IOMAP_LO_SHIFT)) {
+            DPRINTK("    maplo[0x%x] = 0x%08lx\n", port, addr);
+            hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = addr;
+            hd64465_iomap_lo_shift[port>>HD64465_IOMAP_LO_SHIFT] = shift;
+            addr += (1<<(HD64465_IOMAP_LO_SHIFT));
+        }
+
+        for (port = MAX(baseport, HD64465_IOMAP_LO_THRESH) ;
+             port < endport && port < HD64465_IOMAP_HI_THRESH ;
+             port += (1<<HD64465_IOMAP_HI_SHIFT)) {
+            DPRINTK("    maphi[0x%x] = 0x%08lx\n", port, addr);
+            hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = addr;
+            hd64465_iomap_hi_shift[port>>HD64465_IOMAP_HI_SHIFT] = shift;
+            addr += (1<<(HD64465_IOMAP_HI_SHIFT));
+        }
+}
+EXPORT_SYMBOL(hd64465_port_map);
+
+void hd64465_port_unmap(unsigned short baseport, unsigned int nports)
+{
+        unsigned int port, endport = baseport + nports;
+        
+        DPRINTK("hd64465_port_unmap(base=0x%04hx, n=0x%04hx)\n",
+            baseport, nports);
+
+        for (port = baseport ;
+             port < endport && port < HD64465_IOMAP_LO_THRESH ;
+             port += (1<<HD64465_IOMAP_LO_SHIFT)) {
+            hd64465_iomap_lo[port>>HD64465_IOMAP_LO_SHIFT] = 0;
+        }
+
+        for (port = MAX(baseport, HD64465_IOMAP_LO_THRESH) ;
+             port < endport && port < HD64465_IOMAP_HI_THRESH ;
+             port += (1<<HD64465_IOMAP_HI_SHIFT)) {
+            hd64465_iomap_hi[port>>HD64465_IOMAP_HI_SHIFT] = 0;
+        }
+}
+EXPORT_SYMBOL(hd64465_port_unmap);
+
+unsigned long hd64465_isa_port2addr(unsigned long port)
+{
+        unsigned long addr = 0;
+        unsigned char shift;
+
+        /* handle remapping of low IO ports */
+        if (port < HD64465_IOMAP_LO_THRESH) {
+            addr = hd64465_iomap_lo[port >> HD64465_IOMAP_LO_SHIFT];
+            shift = hd64465_iomap_lo_shift[port >> HD64465_IOMAP_LO_SHIFT];
+            if (addr != 0)
+                addr += (port & HD64465_IOMAP_LO_MASK) << shift;
+            else
+                printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port);
+        } else if (port < HD64465_IOMAP_HI_THRESH) {
+            addr = hd64465_iomap_hi[port >> HD64465_IOMAP_HI_SHIFT];
+            shift = hd64465_iomap_hi_shift[port >> HD64465_IOMAP_HI_SHIFT];
+            if (addr != 0)
+                addr += (port & HD64465_IOMAP_HI_MASK) << shift;
+            else
+                printk(KERN_NOTICE "io_hd64465: access to un-mapped port %lx\n", port);
+        }
+                
+        /* HD64465 internal devices (0xb0000000) */
+        else if (port < 0x20000)
+            addr = CONFIG_HD64465_IOBASE + port - 0x10000;
+
+        /* Whole physical address space (0xa0000000) */
+        else
+            addr = P2SEGADDR(port);
+
+        DIPRINTK(2, "PORT2ADDR(0x%08lx) = 0x%08lx\n", port, addr);
+
+        return addr;
+}
+
+static inline void delay(void)
+{
+        ctrl_inw(0xa0000000);
+}
+
+unsigned char hd64465_inb(unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+        unsigned long b = (addr == 0 ? 0 : *(volatile unsigned char*)addr);
+
+        DIPRINTK(0, "inb(%08lx) = %02x\n", addr, (unsigned)b);
+        return b;
+}
+
+unsigned char hd64465_inb_p(unsigned long port)
+{
+        unsigned long v;
+        unsigned long addr = PORT2ADDR(port);
+
+        v = (addr == 0 ? 0 : *(volatile unsigned char*)addr);
+        delay();
+        DIPRINTK(0, "inb_p(%08lx) = %02x\n", addr, (unsigned)v);
+        return v;
+}
+
+unsigned short hd64465_inw(unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+        unsigned long b = (addr == 0 ? 0 : *(volatile unsigned short*)addr);
+        DIPRINTK(0, "inw(%08lx) = %04lx\n", addr, b);
+        return b;
+}
+
+unsigned int hd64465_inl(unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+        unsigned int b = (addr == 0 ? 0 : *(volatile unsigned long*)addr);
+        DIPRINTK(0, "inl(%08lx) = %08x\n", addr, b);
+        return b;
+}
+
+void hd64465_outb(unsigned char b, unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+
+        DIPRINTK(0, "outb(%02x, %08lx)\n", (unsigned)b, addr);
+        if (addr != 0)
+            *(volatile unsigned char*)addr = b;
+}
+
+void hd64465_outb_p(unsigned char b, unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+
+        DIPRINTK(0, "outb_p(%02x, %08lx)\n", (unsigned)b, addr);
+        if (addr != 0)
+            *(volatile unsigned char*)addr = b;
+        delay();
+}
+
+void hd64465_outw(unsigned short b, unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+        DIPRINTK(0, "outw(%04x, %08lx)\n", (unsigned)b, addr);
+        if (addr != 0)
+            *(volatile unsigned short*)addr = b;
+}
+
+void hd64465_outl(unsigned int b, unsigned long port)
+{
+        unsigned long addr = PORT2ADDR(port);
+        DIPRINTK(0, "outl(%08x, %08lx)\n", b, addr);
+        if (addr != 0)
+            *(volatile unsigned long*)addr = b;
+}
+