This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / m32r / kernel / io_usrv.c

diff --git a/arch/m32r/kernel/io_usrv.c b/arch/m32r/kernel/io_usrv.c
new file mode 100644 (file)
index 0000000..cc77ced
--- /dev/null
+++ b/arch/m32r/kernel/io_usrv.c
@@ -0,0 +1,247 @@
+/*
+ *  linux/arch/m32r/kernel/io_usrv.c
+ *
+ *  Typical I/O routines for uServer board.
+ *
+ *  Copyright (c) 2001 - 2003  Hiroyuki Kondo, Hirokazu Takata,
+ *                             Hitoshi Yamamoto, Takeo Takahashi
+ *
+ *  This file is subject to the terms and conditions of the GNU General
+ *  Public License.  See the file "COPYING" in the main directory of this
+ *  archive for more details.
+ *
+ */
+
+#include <linux/config.h>
+#include <asm/m32r.h>
+#include <asm/page.h>
+#include <asm/io.h>
+
+#include <linux/types.h>
+#include "../drivers/m32r_cfc.h"
+
+extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
+extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
+#define CFC_IOSTART    CFC_IOPORT_BASE
+#define CFC_IOEND      (CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1)
+
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
+#define UART0_REGSTART         0x04c20000
+#define UART1_REGSTART         0x04c20100
+#define UART_IOMAP_SIZE                8
+#define UART0_IOSTART          0x3f8
+#define UART0_IOEND            (UART0_IOSTART + UART_IOMAP_SIZE - 1)
+#define UART1_IOSTART          0x2f8
+#define UART1_IOEND            (UART1_IOSTART + UART_IOMAP_SIZE - 1)
+#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
+
+#define PORT2ADDR(port)        _port2addr(port)
+
+static __inline__ void *_port2addr(unsigned long port)
+{
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
+       if (port >= UART0_IOSTART && port <= UART0_IOEND)
+               port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART;
+       else if (port >= UART1_IOSTART && port <= UART1_IOEND)
+               port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART;
+#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
+       return (void *)(port + NONCACHE_OFFSET);
+}
+
+static __inline__ void delay(void)
+{
+       __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
+}
+
+unsigned char _inb(unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND) {
+               unsigned char b;
+               pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
+               return b;
+       } else
+               return *(volatile unsigned char *)PORT2ADDR(port);
+}
+
+unsigned short _inw(unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND) {
+               unsigned short w;
+               pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
+               return w;
+       } else
+               return *(volatile unsigned short *)PORT2ADDR(port);
+}
+
+unsigned long _inl(unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND) {
+               unsigned long l;
+               pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
+               return l;
+       } else
+               return *(volatile unsigned long *)PORT2ADDR(port);
+}
+
+unsigned char _inb_p(unsigned long port)
+{
+       unsigned char b;
+
+       if (port >= CFC_IOSTART && port <= CFC_IOEND) {
+               pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
+               return b;
+       } else {
+               b = *(volatile unsigned char *)PORT2ADDR(port);
+               delay();
+               return b;
+       }
+}
+
+unsigned short _inw_p(unsigned long port)
+{
+       unsigned short w;
+
+       if (port >= CFC_IOSTART && port <= CFC_IOEND) {
+               pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
+               return w;
+       } else {
+               w = *(volatile unsigned short *)PORT2ADDR(port);
+               delay();
+               return w;
+       }
+}
+
+unsigned long _inl_p(unsigned long port)
+{
+       unsigned long v;
+
+       v = *(volatile unsigned long *)PORT2ADDR(port);
+       delay();
+
+       return v;
+}
+
+void _outb(unsigned char b, unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
+       else
+               *(volatile unsigned char *)PORT2ADDR(port) = b;
+}
+
+void _outw(unsigned short w, unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
+       else
+               *(volatile unsigned short *)PORT2ADDR(port) = w;
+}
+
+void _outl(unsigned long l, unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
+       else
+               *(volatile unsigned long *)PORT2ADDR(port) = l;
+}
+
+void _outb_p(unsigned char b, unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
+       else
+               *(volatile unsigned char *)PORT2ADDR(port) = b;
+       delay();
+}
+
+void _outw_p(unsigned short w, unsigned long port)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
+       else
+               *(volatile unsigned short *)PORT2ADDR(port) = w;
+       delay();
+}
+
+void _outl_p(unsigned long l, unsigned long port)
+{
+       *(volatile unsigned long *)PORT2ADDR(port) = l;
+       delay();
+}
+
+void _insb(unsigned int port, void * addr, unsigned long count)
+{
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1);
+       else {
+               unsigned char *buf = addr;
+               unsigned char *portp = PORT2ADDR(port);
+               while(count--) *buf++ = *(volatile unsigned char *)portp;
+       }
+}
+
+void _insw(unsigned int port, void * addr, unsigned long count)
+{
+       unsigned short *buf = addr;
+       unsigned short *portp;
+
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_ioread_word(0, port, addr, sizeof(unsigned short), count,
+                       1);
+       else {
+               portp = PORT2ADDR(port);
+               while (count--) *buf++ = *(volatile unsigned short *)portp;
+       }
+}
+
+void _insl(unsigned int port, void * addr, unsigned long count)
+{
+       unsigned long *buf = addr;
+       unsigned long *portp;
+
+       portp = PORT2ADDR(port);
+       while (count--)
+               *buf++ = *(volatile unsigned long *)portp;
+}
+
+void _outsb(unsigned int port, const void * addr, unsigned long count)
+{
+       const unsigned char *buf = addr;
+       unsigned char *portp;
+
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
+                       count, 1);
+       else {
+               portp = PORT2ADDR(port);
+               while (count--)
+                       *(volatile unsigned char *)portp = *buf++;
+       }
+}
+
+void _outsw(unsigned int port, const void * addr, unsigned long count)
+{
+       const unsigned short *buf = addr;
+       unsigned short *portp;
+
+       if (port >= CFC_IOSTART && port <= CFC_IOEND)
+               pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short),
+                       count, 1);
+       else {
+               portp = PORT2ADDR(port);
+               while (count--)
+                       *(volatile unsigned short *)portp = *buf++;
+       }
+}
+
+void _outsl(unsigned int port, const void * addr, unsigned long count)
+{
+       const unsigned long *buf = addr;
+       unsigned char *portp;
+
+       portp = PORT2ADDR(port);
+       while (count--)
+               *(volatile unsigned long *)portp = *buf++;
+}