patch-2.3.99-pre9 linux/arch/sh/kernel/io_se.c

• Lines: 222
• Date: Sun May 21 20:55:06 2000
• Orig file: v2.3.99-pre8/linux/arch/sh/kernel/io_se.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre8/linux/arch/sh/kernel/io_se.c linux/arch/sh/kernel/io_se.c
@@ -0,0 +1,221 @@
+/* $Id: io_se.c,v 1.4 2000/05/07 23:31:58 gniibe Exp $
+ *
+ * linux/arch/sh/kernel/io_se.c
+ *
+ * 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/hitachi_se.h>
+
+/* SH pcmcia io window base, start and end.  */
+int sh_pcic_io_wbase = 0xb8400000;
+int sh_pcic_io_start;
+int sh_pcic_io_stop;
+int sh_pcic_io_type;
+int sh_pcic_io_dummy;
+
+static inline void delay(void)
+{
+	ctrl_inw(0xa0000000);
+}
+
+/* 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)
+		return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
+	else if (port >= 0x1000)
+		return (volatile __u16 *) (PA_83902 + (port << 1));
+	else if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
+		return (volatile __u16 *) (sh_pcic_io_wbase + (port &~ 1));
+	else
+		return (volatile __u16 *) (PA_SUPERIO + (port << 1));
+}
+
+static inline int
+shifted_port(unsigned int port)
+{
+	/* For IDE registers, value is not shifted */
+	if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
+		return 0;
+	else
+		return 1;
+}
+
+#define maybebadio(name,port) \
+  printk("bad PC-like io %s for port 0x%x at 0x%08x\n", \
+	 #name, (port), (__u32) __builtin_return_address(0))
+
+unsigned long inb(unsigned int port)
+{
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
+		return *(__u8 *) (sh_pcic_io_wbase + 0x40000 + port); 
+	else if (shifted_port(port))
+		return (*port2adr(port) >> 8); 
+	else
+		return (*port2adr(port))&0xff; 
+}
+
+unsigned long inb_p(unsigned int port)
+{
+	unsigned long v;
+
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
+		v = *(__u8 *) (sh_pcic_io_wbase + 0x40000 + port); 
+	else if (shifted_port(port))
+		v = (*port2adr(port) >> 8); 
+	else
+		v = (*port2adr(port))&0xff; 
+	delay();
+	return v;
+}
+
+unsigned long inw(unsigned int port)
+{
+	if (port >= 0x2000 ||
+	    (sh_pcic_io_start <= port && port <= sh_pcic_io_stop))
+		return *port2adr(port);
+	else
+		maybebadio(inw, port);
+	return 0;
+}
+
+unsigned long inl(unsigned int port)
+{
+	maybebadio(inl, port);
+	return 0;
+}
+
+void outb(unsigned long value, unsigned int port)
+{
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
+		*(__u8 *)(sh_pcic_io_wbase + port) = value; 
+	else if (shifted_port(port))
+		*(port2adr(port)) = value << 8;
+	else
+		*(port2adr(port)) = value;
+}
+
+void outb_p(unsigned long value, unsigned int port)
+{
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
+		*(__u8 *)(sh_pcic_io_wbase + port) = value; 
+	else if (shifted_port(port))
+		*(port2adr(port)) = value << 8;
+	else
+		*(port2adr(port)) = value;
+	delay();
+}
+
+void outw(unsigned long value, unsigned int port)
+{
+	if (port >= 0x2000 ||
+	    (sh_pcic_io_start <= port && port <= sh_pcic_io_stop))
+		*port2adr(port) = value;
+	else
+		maybebadio(outw, port);
+}
+
+void outl(unsigned long value, unsigned int port)
+{
+	maybebadio(outl, port);
+}
+
+void insb(unsigned int port, void *addr, unsigned long count)
+{
+	volatile __u16 *p = port2adr(port);
+
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop) {
+		volatile __u8 *bp = (__u8 *) (sh_pcic_io_wbase + 0x40000 + port); 
+		while (count--)
+			*((__u8 *) addr)++ = *bp;
+	} else if (shifted_port(port)) {
+		while (count--)
+			*((__u8 *) addr)++ = *p >> 8;
+	} else {
+		while (count--)
+			*((__u8 *) addr)++ = *p;
+	}
+}
+
+void insw(unsigned int port, void *addr, unsigned long count)
+{
+	volatile __u16 *p = port2adr(port);
+	while (count--)
+		*((__u16 *) addr)++ = *p;
+}
+
+void insl(unsigned int port, void *addr, unsigned long count)
+{
+	maybebadio(insl, port);
+}
+
+void outsb(unsigned int port, const void *addr, unsigned long count)
+{
+	volatile __u16 *p = port2adr(port);
+
+	if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop) {
+		volatile __u8 *bp = (__u8 *) (sh_pcic_io_wbase + port); 
+		while (count--)
+			*bp = *((__u8 *) addr)++;
+	} else if (shifted_port(port)) {
+		while (count--)
+			*p = *((__u8 *) addr)++ << 8;
+	} else {
+		while (count--)
+			*p = *((__u8 *) addr)++;
+	}
+}
+
+void outsw(unsigned int port, const void *addr, unsigned long count)
+{
+	volatile __u16 *p = port2adr(port);
+	while (count--)
+		*p = *((__u16 *) addr)++;
+}
+
+void outsl(unsigned int 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];
+
+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;
+}
+
+unsigned long
+sh_isa_slot(unsigned long offset)
+{
+	int idx;
+
+	idx = (offset >> 12) & 0xff;
+	offset &= 0xfff;
+	return sh_isa_memmap[idx] + offset;
+}